Merge pull request #1 from chrislusf/master

update

20 files changed, 18575 insertions, 1683 deletions

diff --git a/weed/pb/Makefile b/weed/pb/Makefile
index c50410574..d2618937b 100644
--- a/weed/pb/Makefile
+++ b/weed/pb/Makefile
@@ -3,8 +3,10 @@ all: gen
 .PHONY : gen
 
 gen:
-	protoc master.proto --go_out=plugins=grpc:./master_pb
-	protoc volume_server.proto --go_out=plugins=grpc:./volume_server_pb
-	protoc filer.proto --go_out=plugins=grpc:./filer_pb
+	protoc master.proto --go_out=plugins=grpc:./master_pb --go_opt=paths=source_relative
+	protoc volume_server.proto --go_out=plugins=grpc:./volume_server_pb --go_opt=paths=source_relative
+	protoc filer.proto --go_out=plugins=grpc:./filer_pb --go_opt=paths=source_relative
+	protoc iam.proto --go_out=plugins=grpc:./iam_pb --go_opt=paths=source_relative
+	protoc messaging.proto --go_out=plugins=grpc:./messaging_pb --go_opt=paths=source_relative
 	# protoc filer.proto --java_out=../../other/java/client/src/main/java
 	cp filer.proto ../../other/java/client/src/main/proto
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index 6cd4df6b4..37121f29c 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -2,6 +2,7 @@ syntax = "proto3";
 
 package filer_pb;
 
+option go_package = "github.com/chrislusf/seaweedfs/weed/pb/filer_pb";
 option java_package = "seaweedfs.client";
 option java_outer_classname = "FilerProto";
 
@@ -12,7 +13,7 @@ service SeaweedFiler {
     rpc LookupDirectoryEntry (LookupDirectoryEntryRequest) returns (LookupDirectoryEntryResponse) {
     }
 
-    rpc ListEntries (ListEntriesRequest) returns (ListEntriesResponse) {
+    rpc ListEntries (ListEntriesRequest) returns (stream ListEntriesResponse) {
     }
 
     rpc CreateEntry (CreateEntryRequest) returns (CreateEntryResponse) {
@@ -21,9 +22,15 @@ service SeaweedFiler {
     rpc UpdateEntry (UpdateEntryRequest) returns (UpdateEntryResponse) {
     }
 
+    rpc AppendToEntry (AppendToEntryRequest) returns (AppendToEntryResponse) {
+    }
+
     rpc DeleteEntry (DeleteEntryRequest) returns (DeleteEntryResponse) {
     }
 
+    rpc AtomicRenameEntry (AtomicRenameEntryRequest) returns (AtomicRenameEntryResponse) {
+    }
+
     rpc AssignVolume (AssignVolumeRequest) returns (AssignVolumeResponse) {
     }
 
@@ -36,6 +43,21 @@ service SeaweedFiler {
     rpc Statistics (StatisticsRequest) returns (StatisticsResponse) {
     }
 
+    rpc GetFilerConfiguration (GetFilerConfigurationRequest) returns (GetFilerConfigurationResponse) {
+    }
+
+    rpc SubscribeMetadata (SubscribeMetadataRequest) returns (stream SubscribeMetadataResponse) {
+    }
+
+    rpc SubscribeLocalMetadata (SubscribeMetadataRequest) returns (stream SubscribeMetadataResponse) {
+    }
+
+    rpc KeepConnected (stream KeepConnectedRequest) returns (stream KeepConnectedResponse) {
+    }
+
+    rpc LocateBroker (LocateBrokerRequest) returns (LocateBrokerResponse) {
+    }
+
 }
 
 //////////////////////////////////////////////////
@@ -58,7 +80,7 @@ message ListEntriesRequest {
 }
 
 message ListEntriesResponse {
-    repeated Entry entries = 1;
+    Entry entry = 1;
 }
 
 message Entry {
@@ -69,19 +91,36 @@ message Entry {
     map<string, bytes> extended = 5;
 }
 
+message FullEntry {
+    string dir = 1;
+    Entry entry = 2;
+}
+
 message EventNotification {
     Entry old_entry = 1;
     Entry new_entry = 2;
     bool delete_chunks = 3;
+    string new_parent_path = 4;
+    bool is_from_other_cluster = 5;
 }
 
 message FileChunk {
-    string file_id = 1;
+    string file_id = 1; // to be deprecated
     int64 offset = 2;
     uint64 size = 3;
     int64 mtime = 4;
     string e_tag = 5;
-    string source_file_id = 6;
+    string source_file_id = 6; // to be deprecated
+    FileId fid = 7;
+    FileId source_fid = 8;
+    bytes cipher_key = 9;
+    bool is_compressed = 10;
+}
+
+message FileId {
+    uint32 volume_id = 1;
+    uint64 file_key = 2;
+    fixed32 cookie = 3;
 }
 
 message FuseAttributes {
@@ -98,32 +137,58 @@ message FuseAttributes {
     string user_name = 11; // for hdfs
     repeated string group_name = 12; // for hdfs
     string symlink_target = 13;
+    bytes md5 = 14;
 }
 
 message CreateEntryRequest {
     string directory = 1;
     Entry entry = 2;
+    bool o_excl = 3;
+    bool is_from_other_cluster = 4;
 }
 
 message CreateEntryResponse {
+    string error = 1;
 }
 
 message UpdateEntryRequest {
     string directory = 1;
     Entry entry = 2;
+    bool is_from_other_cluster = 3;
 }
 message UpdateEntryResponse {
 }
 
+message AppendToEntryRequest {
+    string directory = 1;
+    string entry_name = 2;
+    repeated FileChunk chunks = 3;
+}
+message AppendToEntryResponse {
+}
+
 message DeleteEntryRequest {
     string directory = 1;
     string name = 2;
     // bool is_directory = 3;
     bool is_delete_data = 4;
     bool is_recursive = 5;
+    bool ignore_recursive_error = 6;
+    bool is_from_other_cluster = 7;
 }
 
 message DeleteEntryResponse {
+    string error = 1;
+}
+
+message AtomicRenameEntryRequest {
+    string old_directory = 1;
+    string old_name = 2;
+    string new_directory = 3;
+    string new_name = 4;
+}
+
+message AtomicRenameEntryResponse {
 }
 
 message AssignVolumeRequest {
@@ -132,6 +197,7 @@ message AssignVolumeRequest {
     string replication = 3;
     int32 ttl_sec = 4;
     string data_center = 5;
+    string parent_path = 6;
 }
 
 message AssignVolumeResponse {
@@ -139,6 +205,10 @@ message AssignVolumeResponse {
     string url = 2;
     string public_url = 3;
     int32 count = 4;
+    string auth = 5;
+    string collection = 6;
+    string replication = 7;
+    string error = 8;
 }
 
 message LookupVolumeRequest {
@@ -177,3 +247,53 @@ message StatisticsResponse {
     uint64 used_size = 5;
     uint64 file_count = 6;
 }
+
+message GetFilerConfigurationRequest {
+}
+message GetFilerConfigurationResponse {
+    repeated string masters = 1;
+    string replication = 2;
+    string collection = 3;
+    uint32 max_mb = 4;
+    string dir_buckets = 5;
+    bool cipher = 7;
+}
+
+message SubscribeMetadataRequest {
+    string client_name = 1;
+    string path_prefix = 2;
+    int64 since_ns = 3;
+}
+message SubscribeMetadataResponse {
+    string directory = 1;
+    EventNotification event_notification = 2;
+    int64 ts_ns = 3;
+}
+
+message LogEntry {
+    int64 ts_ns = 1;
+    int32 partition_key_hash = 2;
+    bytes data = 3;
+}
+
+message KeepConnectedRequest {
+    string name = 1;
+    uint32 grpc_port = 2;
+    repeated string resources = 3;
+}
+message KeepConnectedResponse {
+}
+
+message LocateBrokerRequest {
+    string resource = 1;
+}
+message LocateBrokerResponse {
+    bool found = 1;
+    // if found, send the exact address
+    // if not found, send the full list of existing brokers
+    message Resource {
+        string grpc_addresses = 1;
+        int32 resource_count = 2;
+    }
+    repeated Resource resources = 2;
+}
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index 6b4a27c0a..456a31a1d 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -1,876 +1,3686 @@
-// Code generated by protoc-gen-go.
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.24.0
+// 	protoc        v3.12.3
 // source: filer.proto
-// DO NOT EDIT!
-
-/*
-Package filer_pb is a generated protocol buffer package.
-
-It is generated from these files:
-	filer.proto
-
-It has these top-level messages:
-	LookupDirectoryEntryRequest
-	LookupDirectoryEntryResponse
-	ListEntriesRequest
-	ListEntriesResponse
-	Entry
-	EventNotification
-	FileChunk
-	FuseAttributes
-	CreateEntryRequest
-	CreateEntryResponse
-	UpdateEntryRequest
-	UpdateEntryResponse
-	DeleteEntryRequest
-	DeleteEntryResponse
-	AssignVolumeRequest
-	AssignVolumeResponse
-	LookupVolumeRequest
-	Locations
-	Location
-	LookupVolumeResponse
-	DeleteCollectionRequest
-	DeleteCollectionResponse
-	StatisticsRequest
-	StatisticsResponse
-*/
-package filer_pb
 
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
+package filer_pb
 
 import (
-	context "golang.org/x/net/context"
+	context "context"
+	proto "github.com/golang/protobuf/proto"
 	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
 
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
 
 type LookupDirectoryEntryRequest struct {
-	Directory string `protobuf:"bytes,1,opt,name=directory" json:"directory,omitempty"`
-	Name      string `protobuf:"bytes,2,opt,name=name" json:"name,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directory string `protobuf:"bytes,1,opt,name=directory,proto3" json:"directory,omitempty"`
+	Name      string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *LookupDirectoryEntryRequest) Reset() {
+	*x = LookupDirectoryEntryRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupDirectoryEntryRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupDirectoryEntryRequest) ProtoMessage() {}
+
+func (x *LookupDirectoryEntryRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *LookupDirectoryEntryRequest) Reset()                    { *m = LookupDirectoryEntryRequest{} }
-func (m *LookupDirectoryEntryRequest) String() string            { return proto.CompactTextString(m) }
-func (*LookupDirectoryEntryRequest) ProtoMessage()               {}
-func (*LookupDirectoryEntryRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+// Deprecated: Use LookupDirectoryEntryRequest.ProtoReflect.Descriptor instead.
+func (*LookupDirectoryEntryRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{0}
+}
 
-func (m *LookupDirectoryEntryRequest) GetDirectory() string {
-	if m != nil {
-		return m.Directory
+func (x *LookupDirectoryEntryRequest) GetDirectory() string {
+	if x != nil {
+		return x.Directory
 	}
 	return ""
 }
 
-func (m *LookupDirectoryEntryRequest) GetName() string {
-	if m != nil {
-		return m.Name
+func (x *LookupDirectoryEntryRequest) GetName() string {
+	if x != nil {
+		return x.Name
 	}
 	return ""
 }
 
 type LookupDirectoryEntryResponse struct {
-	Entry *Entry `protobuf:"bytes,1,opt,name=entry" json:"entry,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Entry *Entry `protobuf:"bytes,1,opt,name=entry,proto3" json:"entry,omitempty"`
+}
+
+func (x *LookupDirectoryEntryResponse) Reset() {
+	*x = LookupDirectoryEntryResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupDirectoryEntryResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *LookupDirectoryEntryResponse) Reset()                    { *m = LookupDirectoryEntryResponse{} }
-func (m *LookupDirectoryEntryResponse) String() string            { return proto.CompactTextString(m) }
-func (*LookupDirectoryEntryResponse) ProtoMessage()               {}
-func (*LookupDirectoryEntryResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+func (*LookupDirectoryEntryResponse) ProtoMessage() {}
 
-func (m *LookupDirectoryEntryResponse) GetEntry() *Entry {
-	if m != nil {
-		return m.Entry
+func (x *LookupDirectoryEntryResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupDirectoryEntryResponse.ProtoReflect.Descriptor instead.
+func (*LookupDirectoryEntryResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *LookupDirectoryEntryResponse) GetEntry() *Entry {
+	if x != nil {
+		return x.Entry
 	}
 	return nil
 }
 
 type ListEntriesRequest struct {
-	Directory          string `protobuf:"bytes,1,opt,name=directory" json:"directory,omitempty"`
-	Prefix             string `protobuf:"bytes,2,opt,name=prefix" json:"prefix,omitempty"`
-	StartFromFileName  string `protobuf:"bytes,3,opt,name=startFromFileName" json:"startFromFileName,omitempty"`
-	InclusiveStartFrom bool   `protobuf:"varint,4,opt,name=inclusiveStartFrom" json:"inclusiveStartFrom,omitempty"`
-	Limit              uint32 `protobuf:"varint,5,opt,name=limit" json:"limit,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directory          string `protobuf:"bytes,1,opt,name=directory,proto3" json:"directory,omitempty"`
+	Prefix             string `protobuf:"bytes,2,opt,name=prefix,proto3" json:"prefix,omitempty"`
+	StartFromFileName  string `protobuf:"bytes,3,opt,name=startFromFileName,proto3" json:"startFromFileName,omitempty"`
+	InclusiveStartFrom bool   `protobuf:"varint,4,opt,name=inclusiveStartFrom,proto3" json:"inclusiveStartFrom,omitempty"`
+	Limit              uint32 `protobuf:"varint,5,opt,name=limit,proto3" json:"limit,omitempty"`
 }
 
-func (m *ListEntriesRequest) Reset()                    { *m = ListEntriesRequest{} }
-func (m *ListEntriesRequest) String() string            { return proto.CompactTextString(m) }
-func (*ListEntriesRequest) ProtoMessage()               {}
-func (*ListEntriesRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+func (x *ListEntriesRequest) Reset() {
+	*x = ListEntriesRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
 
-func (m *ListEntriesRequest) GetDirectory() string {
-	if m != nil {
-		return m.Directory
+func (x *ListEntriesRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListEntriesRequest) ProtoMessage() {}
+
+func (x *ListEntriesRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListEntriesRequest.ProtoReflect.Descriptor instead.
+func (*ListEntriesRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *ListEntriesRequest) GetDirectory() string {
+	if x != nil {
+		return x.Directory
 	}
 	return ""
 }
 
-func (m *ListEntriesRequest) GetPrefix() string {
-	if m != nil {
-		return m.Prefix
+func (x *ListEntriesRequest) GetPrefix() string {
+	if x != nil {
+		return x.Prefix
 	}
 	return ""
 }
 
-func (m *ListEntriesRequest) GetStartFromFileName() string {
-	if m != nil {
-		return m.StartFromFileName
+func (x *ListEntriesRequest) GetStartFromFileName() string {
+	if x != nil {
+		return x.StartFromFileName
 	}
 	return ""
 }
 
-func (m *ListEntriesRequest) GetInclusiveStartFrom() bool {
-	if m != nil {
-		return m.InclusiveStartFrom
+func (x *ListEntriesRequest) GetInclusiveStartFrom() bool {
+	if x != nil {
+		return x.InclusiveStartFrom
 	}
 	return false
 }
 
-func (m *ListEntriesRequest) GetLimit() uint32 {
-	if m != nil {
-		return m.Limit
+func (x *ListEntriesRequest) GetLimit() uint32 {
+	if x != nil {
+		return x.Limit
 	}
 	return 0
 }
 
 type ListEntriesResponse struct {
-	Entries []*Entry `protobuf:"bytes,1,rep,name=entries" json:"entries,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Entry *Entry `protobuf:"bytes,1,opt,name=entry,proto3" json:"entry,omitempty"`
 }
 
-func (m *ListEntriesResponse) Reset()                    { *m = ListEntriesResponse{} }
-func (m *ListEntriesResponse) String() string            { return proto.CompactTextString(m) }
-func (*ListEntriesResponse) ProtoMessage()               {}
-func (*ListEntriesResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+func (x *ListEntriesResponse) Reset() {
+	*x = ListEntriesResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListEntriesResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
 
-func (m *ListEntriesResponse) GetEntries() []*Entry {
-	if m != nil {
-		return m.Entries
+func (*ListEntriesResponse) ProtoMessage() {}
+
+func (x *ListEntriesResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListEntriesResponse.ProtoReflect.Descriptor instead.
+func (*ListEntriesResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *ListEntriesResponse) GetEntry() *Entry {
+	if x != nil {
+		return x.Entry
 	}
 	return nil
 }
 
 type Entry struct {
-	Name        string            `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
-	IsDirectory bool              `protobuf:"varint,2,opt,name=is_directory,json=isDirectory" json:"is_directory,omitempty"`
-	Chunks      []*FileChunk      `protobuf:"bytes,3,rep,name=chunks" json:"chunks,omitempty"`
-	Attributes  *FuseAttributes   `protobuf:"bytes,4,opt,name=attributes" json:"attributes,omitempty"`
-	Extended    map[string][]byte `protobuf:"bytes,5,rep,name=extended" json:"extended,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name        string            `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	IsDirectory bool              `protobuf:"varint,2,opt,name=is_directory,json=isDirectory,proto3" json:"is_directory,omitempty"`
+	Chunks      []*FileChunk      `protobuf:"bytes,3,rep,name=chunks,proto3" json:"chunks,omitempty"`
+	Attributes  *FuseAttributes   `protobuf:"bytes,4,opt,name=attributes,proto3" json:"attributes,omitempty"`
+	Extended    map[string][]byte `protobuf:"bytes,5,rep,name=extended,proto3" json:"extended,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+}
+
+func (x *Entry) Reset() {
+	*x = Entry{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Entry) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *Entry) Reset()                    { *m = Entry{} }
-func (m *Entry) String() string            { return proto.CompactTextString(m) }
-func (*Entry) ProtoMessage()               {}
-func (*Entry) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+func (*Entry) ProtoMessage() {}
 
-func (m *Entry) GetName() string {
-	if m != nil {
-		return m.Name
+func (x *Entry) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Entry.ProtoReflect.Descriptor instead.
+func (*Entry) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *Entry) GetName() string {
+	if x != nil {
+		return x.Name
 	}
 	return ""
 }
 
-func (m *Entry) GetIsDirectory() bool {
-	if m != nil {
-		return m.IsDirectory
+func (x *Entry) GetIsDirectory() bool {
+	if x != nil {
+		return x.IsDirectory
 	}
 	return false
 }
 
-func (m *Entry) GetChunks() []*FileChunk {
-	if m != nil {
-		return m.Chunks
+func (x *Entry) GetChunks() []*FileChunk {
+	if x != nil {
+		return x.Chunks
 	}
 	return nil
 }
 
-func (m *Entry) GetAttributes() *FuseAttributes {
-	if m != nil {
-		return m.Attributes
+func (x *Entry) GetAttributes() *FuseAttributes {
+	if x != nil {
+		return x.Attributes
 	}
 	return nil
 }
 
-func (m *Entry) GetExtended() map[string][]byte {
-	if m != nil {
-		return m.Extended
+func (x *Entry) GetExtended() map[string][]byte {
+	if x != nil {
+		return x.Extended
+	}
+	return nil
+}
+
+type FullEntry struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Dir   string `protobuf:"bytes,1,opt,name=dir,proto3" json:"dir,omitempty"`
+	Entry *Entry `protobuf:"bytes,2,opt,name=entry,proto3" json:"entry,omitempty"`
+}
+
+func (x *FullEntry) Reset() {
+	*x = FullEntry{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FullEntry) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FullEntry) ProtoMessage() {}
+
+func (x *FullEntry) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FullEntry.ProtoReflect.Descriptor instead.
+func (*FullEntry) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *FullEntry) GetDir() string {
+	if x != nil {
+		return x.Dir
+	}
+	return ""
+}
+
+func (x *FullEntry) GetEntry() *Entry {
+	if x != nil {
+		return x.Entry
 	}
 	return nil
 }
 
 type EventNotification struct {
-	OldEntry     *Entry `protobuf:"bytes,1,opt,name=old_entry,json=oldEntry" json:"old_entry,omitempty"`
-	NewEntry     *Entry `protobuf:"bytes,2,opt,name=new_entry,json=newEntry" json:"new_entry,omitempty"`
-	DeleteChunks bool   `protobuf:"varint,3,opt,name=delete_chunks,json=deleteChunks" json:"delete_chunks,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	OldEntry           *Entry `protobuf:"bytes,1,opt,name=old_entry,json=oldEntry,proto3" json:"old_entry,omitempty"`
+	NewEntry           *Entry `protobuf:"bytes,2,opt,name=new_entry,json=newEntry,proto3" json:"new_entry,omitempty"`
+	DeleteChunks       bool   `protobuf:"varint,3,opt,name=delete_chunks,json=deleteChunks,proto3" json:"delete_chunks,omitempty"`
+	NewParentPath      string `protobuf:"bytes,4,opt,name=new_parent_path,json=newParentPath,proto3" json:"new_parent_path,omitempty"`
+	IsFromOtherCluster bool   `protobuf:"varint,5,opt,name=is_from_other_cluster,json=isFromOtherCluster,proto3" json:"is_from_other_cluster,omitempty"`
+}
+
+func (x *EventNotification) Reset() {
+	*x = EventNotification{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *EventNotification) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*EventNotification) ProtoMessage() {}
+
+func (x *EventNotification) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *EventNotification) Reset()                    { *m = EventNotification{} }
-func (m *EventNotification) String() string            { return proto.CompactTextString(m) }
-func (*EventNotification) ProtoMessage()               {}
-func (*EventNotification) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+// Deprecated: Use EventNotification.ProtoReflect.Descriptor instead.
+func (*EventNotification) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{6}
+}
 
-func (m *EventNotification) GetOldEntry() *Entry {
-	if m != nil {
-		return m.OldEntry
+func (x *EventNotification) GetOldEntry() *Entry {
+	if x != nil {
+		return x.OldEntry
 	}
 	return nil
 }
 
-func (m *EventNotification) GetNewEntry() *Entry {
-	if m != nil {
-		return m.NewEntry
+func (x *EventNotification) GetNewEntry() *Entry {
+	if x != nil {
+		return x.NewEntry
 	}
 	return nil
 }
 
-func (m *EventNotification) GetDeleteChunks() bool {
-	if m != nil {
-		return m.DeleteChunks
+func (x *EventNotification) GetDeleteChunks() bool {
+	if x != nil {
+		return x.DeleteChunks
+	}
+	return false
+}
+
+func (x *EventNotification) GetNewParentPath() string {
+	if x != nil {
+		return x.NewParentPath
+	}
+	return ""
+}
+
+func (x *EventNotification) GetIsFromOtherCluster() bool {
+	if x != nil {
+		return x.IsFromOtherCluster
 	}
 	return false
 }
 
 type FileChunk struct {
-	FileId       string `protobuf:"bytes,1,opt,name=file_id,json=fileId" json:"file_id,omitempty"`
-	Offset       int64  `protobuf:"varint,2,opt,name=offset" json:"offset,omitempty"`
-	Size         uint64 `protobuf:"varint,3,opt,name=size" json:"size,omitempty"`
-	Mtime        int64  `protobuf:"varint,4,opt,name=mtime" json:"mtime,omitempty"`
-	ETag         string `protobuf:"bytes,5,opt,name=e_tag,json=eTag" json:"e_tag,omitempty"`
-	SourceFileId string `protobuf:"bytes,6,opt,name=source_file_id,json=sourceFileId" json:"source_file_id,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FileId       string  `protobuf:"bytes,1,opt,name=file_id,json=fileId,proto3" json:"file_id,omitempty"` // to be deprecated
+	Offset       int64   `protobuf:"varint,2,opt,name=offset,proto3" json:"offset,omitempty"`
+	Size         uint64  `protobuf:"varint,3,opt,name=size,proto3" json:"size,omitempty"`
+	Mtime        int64   `protobuf:"varint,4,opt,name=mtime,proto3" json:"mtime,omitempty"`
+	ETag         string  `protobuf:"bytes,5,opt,name=e_tag,json=eTag,proto3" json:"e_tag,omitempty"`
+	SourceFileId string  `protobuf:"bytes,6,opt,name=source_file_id,json=sourceFileId,proto3" json:"source_file_id,omitempty"` // to be deprecated
+	Fid          *FileId `protobuf:"bytes,7,opt,name=fid,proto3" json:"fid,omitempty"`
+	SourceFid    *FileId `protobuf:"bytes,8,opt,name=source_fid,json=sourceFid,proto3" json:"source_fid,omitempty"`
+	CipherKey    []byte  `protobuf:"bytes,9,opt,name=cipher_key,json=cipherKey,proto3" json:"cipher_key,omitempty"`
+	IsCompressed bool    `protobuf:"varint,10,opt,name=is_compressed,json=isCompressed,proto3" json:"is_compressed,omitempty"`
+}
+
+func (x *FileChunk) Reset() {
+	*x = FileChunk{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FileChunk) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *FileChunk) Reset()                    { *m = FileChunk{} }
-func (m *FileChunk) String() string            { return proto.CompactTextString(m) }
-func (*FileChunk) ProtoMessage()               {}
-func (*FileChunk) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+func (*FileChunk) ProtoMessage() {}
 
-func (m *FileChunk) GetFileId() string {
-	if m != nil {
-		return m.FileId
+func (x *FileChunk) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FileChunk.ProtoReflect.Descriptor instead.
+func (*FileChunk) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *FileChunk) GetFileId() string {
+	if x != nil {
+		return x.FileId
 	}
 	return ""
 }
 
-func (m *FileChunk) GetOffset() int64 {
-	if m != nil {
-		return m.Offset
+func (x *FileChunk) GetOffset() int64 {
+	if x != nil {
+		return x.Offset
 	}
 	return 0
 }
 
-func (m *FileChunk) GetSize() uint64 {
-	if m != nil {
-		return m.Size
+func (x *FileChunk) GetSize() uint64 {
+	if x != nil {
+		return x.Size
 	}
 	return 0
 }
 
-func (m *FileChunk) GetMtime() int64 {
-	if m != nil {
-		return m.Mtime
+func (x *FileChunk) GetMtime() int64 {
+	if x != nil {
+		return x.Mtime
 	}
 	return 0
 }
 
-func (m *FileChunk) GetETag() string {
-	if m != nil {
-		return m.ETag
+func (x *FileChunk) GetETag() string {
+	if x != nil {
+		return x.ETag
 	}
 	return ""
 }
 
-func (m *FileChunk) GetSourceFileId() string {
-	if m != nil {
-		return m.SourceFileId
+func (x *FileChunk) GetSourceFileId() string {
+	if x != nil {
+		return x.SourceFileId
 	}
 	return ""
 }
 
+func (x *FileChunk) GetFid() *FileId {
+	if x != nil {
+		return x.Fid
+	}
+	return nil
+}
+
+func (x *FileChunk) GetSourceFid() *FileId {
+	if x != nil {
+		return x.SourceFid
+	}
+	return nil
+}
+
+func (x *FileChunk) GetCipherKey() []byte {
+	if x != nil {
+		return x.CipherKey
+	}
+	return nil
+}
+
+func (x *FileChunk) GetIsCompressed() bool {
+	if x != nil {
+		return x.IsCompressed
+	}
+	return false
+}
+
+type FileId struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	FileKey  uint64 `protobuf:"varint,2,opt,name=file_key,json=fileKey,proto3" json:"file_key,omitempty"`
+	Cookie   uint32 `protobuf:"fixed32,3,opt,name=cookie,proto3" json:"cookie,omitempty"`
+}
+
+func (x *FileId) Reset() {
+	*x = FileId{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FileId) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FileId) ProtoMessage() {}
+
+func (x *FileId) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FileId.ProtoReflect.Descriptor instead.
+func (*FileId) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *FileId) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *FileId) GetFileKey() uint64 {
+	if x != nil {
+		return x.FileKey
+	}
+	return 0
+}
+
+func (x *FileId) GetCookie() uint32 {
+	if x != nil {
+		return x.Cookie
+	}
+	return 0
+}
+
 type FuseAttributes struct {
-	FileSize      uint64   `protobuf:"varint,1,opt,name=file_size,json=fileSize" json:"file_size,omitempty"`
-	Mtime         int64    `protobuf:"varint,2,opt,name=mtime" json:"mtime,omitempty"`
-	FileMode      uint32   `protobuf:"varint,3,opt,name=file_mode,json=fileMode" json:"file_mode,omitempty"`
-	Uid           uint32   `protobuf:"varint,4,opt,name=uid" json:"uid,omitempty"`
-	Gid           uint32   `protobuf:"varint,5,opt,name=gid" json:"gid,omitempty"`
-	Crtime        int64    `protobuf:"varint,6,opt,name=crtime" json:"crtime,omitempty"`
-	Mime          string   `protobuf:"bytes,7,opt,name=mime" json:"mime,omitempty"`
-	Replication   string   `protobuf:"bytes,8,opt,name=replication" json:"replication,omitempty"`
-	Collection    string   `protobuf:"bytes,9,opt,name=collection" json:"collection,omitempty"`
-	TtlSec        int32    `protobuf:"varint,10,opt,name=ttl_sec,json=ttlSec" json:"ttl_sec,omitempty"`
-	UserName      string   `protobuf:"bytes,11,opt,name=user_name,json=userName" json:"user_name,omitempty"`
-	GroupName     []string `protobuf:"bytes,12,rep,name=group_name,json=groupName" json:"group_name,omitempty"`
-	SymlinkTarget string   `protobuf:"bytes,13,opt,name=symlink_target,json=symlinkTarget" json:"symlink_target,omitempty"`
-}
-
-func (m *FuseAttributes) Reset()                    { *m = FuseAttributes{} }
-func (m *FuseAttributes) String() string            { return proto.CompactTextString(m) }
-func (*FuseAttributes) ProtoMessage()               {}
-func (*FuseAttributes) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
-
-func (m *FuseAttributes) GetFileSize() uint64 {
-	if m != nil {
-		return m.FileSize
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FileSize      uint64   `protobuf:"varint,1,opt,name=file_size,json=fileSize,proto3" json:"file_size,omitempty"`
+	Mtime         int64    `protobuf:"varint,2,opt,name=mtime,proto3" json:"mtime,omitempty"` // unix time in seconds
+	FileMode      uint32   `protobuf:"varint,3,opt,name=file_mode,json=fileMode,proto3" json:"file_mode,omitempty"`
+	Uid           uint32   `protobuf:"varint,4,opt,name=uid,proto3" json:"uid,omitempty"`
+	Gid           uint32   `protobuf:"varint,5,opt,name=gid,proto3" json:"gid,omitempty"`
+	Crtime        int64    `protobuf:"varint,6,opt,name=crtime,proto3" json:"crtime,omitempty"` // unix time in seconds
+	Mime          string   `protobuf:"bytes,7,opt,name=mime,proto3" json:"mime,omitempty"`
+	Replication   string   `protobuf:"bytes,8,opt,name=replication,proto3" json:"replication,omitempty"`
+	Collection    string   `protobuf:"bytes,9,opt,name=collection,proto3" json:"collection,omitempty"`
+	TtlSec        int32    `protobuf:"varint,10,opt,name=ttl_sec,json=ttlSec,proto3" json:"ttl_sec,omitempty"`
+	UserName      string   `protobuf:"bytes,11,opt,name=user_name,json=userName,proto3" json:"user_name,omitempty"`    // for hdfs
+	GroupName     []string `protobuf:"bytes,12,rep,name=group_name,json=groupName,proto3" json:"group_name,omitempty"` // for hdfs
+	SymlinkTarget string   `protobuf:"bytes,13,opt,name=symlink_target,json=symlinkTarget,proto3" json:"symlink_target,omitempty"`
+	Md5           []byte   `protobuf:"bytes,14,opt,name=md5,proto3" json:"md5,omitempty"`
+}
+
+func (x *FuseAttributes) Reset() {
+	*x = FuseAttributes{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FuseAttributes) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FuseAttributes) ProtoMessage() {}
+
+func (x *FuseAttributes) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[9]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FuseAttributes.ProtoReflect.Descriptor instead.
+func (*FuseAttributes) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{9}
+}
+
+func (x *FuseAttributes) GetFileSize() uint64 {
+	if x != nil {
+		return x.FileSize
 	}
 	return 0
 }
 
-func (m *FuseAttributes) GetMtime() int64 {
-	if m != nil {
-		return m.Mtime
+func (x *FuseAttributes) GetMtime() int64 {
+	if x != nil {
+		return x.Mtime
 	}
 	return 0
 }
 
-func (m *FuseAttributes) GetFileMode() uint32 {
-	if m != nil {
-		return m.FileMode
+func (x *FuseAttributes) GetFileMode() uint32 {
+	if x != nil {
+		return x.FileMode
 	}
 	return 0
 }
 
-func (m *FuseAttributes) GetUid() uint32 {
-	if m != nil {
-		return m.Uid
+func (x *FuseAttributes) GetUid() uint32 {
+	if x != nil {
+		return x.Uid
 	}
 	return 0
 }
 
-func (m *FuseAttributes) GetGid() uint32 {
-	if m != nil {
-		return m.Gid
+func (x *FuseAttributes) GetGid() uint32 {
+	if x != nil {
+		return x.Gid
 	}
 	return 0
 }
 
-func (m *FuseAttributes) GetCrtime() int64 {
-	if m != nil {
-		return m.Crtime
+func (x *FuseAttributes) GetCrtime() int64 {
+	if x != nil {
+		return x.Crtime
 	}
 	return 0
 }
 
-func (m *FuseAttributes) GetMime() string {
-	if m != nil {
-		return m.Mime
+func (x *FuseAttributes) GetMime() string {
+	if x != nil {
+		return x.Mime
 	}
 	return ""
 }
 
-func (m *FuseAttributes) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *FuseAttributes) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *FuseAttributes) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *FuseAttributes) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *FuseAttributes) GetTtlSec() int32 {
-	if m != nil {
-		return m.TtlSec
+func (x *FuseAttributes) GetTtlSec() int32 {
+	if x != nil {
+		return x.TtlSec
 	}
 	return 0
 }
 
-func (m *FuseAttributes) GetUserName() string {
-	if m != nil {
-		return m.UserName
+func (x *FuseAttributes) GetUserName() string {
+	if x != nil {
+		return x.UserName
 	}
 	return ""
 }
 
-func (m *FuseAttributes) GetGroupName() []string {
-	if m != nil {
-		return m.GroupName
+func (x *FuseAttributes) GetGroupName() []string {
+	if x != nil {
+		return x.GroupName
 	}
 	return nil
 }
 
-func (m *FuseAttributes) GetSymlinkTarget() string {
-	if m != nil {
-		return m.SymlinkTarget
+func (x *FuseAttributes) GetSymlinkTarget() string {
+	if x != nil {
+		return x.SymlinkTarget
 	}
 	return ""
 }
 
+func (x *FuseAttributes) GetMd5() []byte {
+	if x != nil {
+		return x.Md5
+	}
+	return nil
+}
+
 type CreateEntryRequest struct {
-	Directory string `protobuf:"bytes,1,opt,name=directory" json:"directory,omitempty"`
-	Entry     *Entry `protobuf:"bytes,2,opt,name=entry" json:"entry,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directory          string `protobuf:"bytes,1,opt,name=directory,proto3" json:"directory,omitempty"`
+	Entry              *Entry `protobuf:"bytes,2,opt,name=entry,proto3" json:"entry,omitempty"`
+	OExcl              bool   `protobuf:"varint,3,opt,name=o_excl,json=oExcl,proto3" json:"o_excl,omitempty"`
+	IsFromOtherCluster bool   `protobuf:"varint,4,opt,name=is_from_other_cluster,json=isFromOtherCluster,proto3" json:"is_from_other_cluster,omitempty"`
+}
+
+func (x *CreateEntryRequest) Reset() {
+	*x = CreateEntryRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CreateEntryRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CreateEntryRequest) ProtoMessage() {}
+
+func (x *CreateEntryRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *CreateEntryRequest) Reset()                    { *m = CreateEntryRequest{} }
-func (m *CreateEntryRequest) String() string            { return proto.CompactTextString(m) }
-func (*CreateEntryRequest) ProtoMessage()               {}
-func (*CreateEntryRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+// Deprecated: Use CreateEntryRequest.ProtoReflect.Descriptor instead.
+func (*CreateEntryRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{10}
+}
 
-func (m *CreateEntryRequest) GetDirectory() string {
-	if m != nil {
-		return m.Directory
+func (x *CreateEntryRequest) GetDirectory() string {
+	if x != nil {
+		return x.Directory
 	}
 	return ""
 }
 
-func (m *CreateEntryRequest) GetEntry() *Entry {
-	if m != nil {
-		return m.Entry
+func (x *CreateEntryRequest) GetEntry() *Entry {
+	if x != nil {
+		return x.Entry
 	}
 	return nil
 }
 
+func (x *CreateEntryRequest) GetOExcl() bool {
+	if x != nil {
+		return x.OExcl
+	}
+	return false
+}
+
+func (x *CreateEntryRequest) GetIsFromOtherCluster() bool {
+	if x != nil {
+		return x.IsFromOtherCluster
+	}
+	return false
+}
+
 type CreateEntryResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Error string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
 }
 
-func (m *CreateEntryResponse) Reset()                    { *m = CreateEntryResponse{} }
-func (m *CreateEntryResponse) String() string            { return proto.CompactTextString(m) }
-func (*CreateEntryResponse) ProtoMessage()               {}
-func (*CreateEntryResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+func (x *CreateEntryResponse) Reset() {
+	*x = CreateEntryResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CreateEntryResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CreateEntryResponse) ProtoMessage() {}
+
+func (x *CreateEntryResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CreateEntryResponse.ProtoReflect.Descriptor instead.
+func (*CreateEntryResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *CreateEntryResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
 
 type UpdateEntryRequest struct {
-	Directory string `protobuf:"bytes,1,opt,name=directory" json:"directory,omitempty"`
-	Entry     *Entry `protobuf:"bytes,2,opt,name=entry" json:"entry,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directory          string `protobuf:"bytes,1,opt,name=directory,proto3" json:"directory,omitempty"`
+	Entry              *Entry `protobuf:"bytes,2,opt,name=entry,proto3" json:"entry,omitempty"`
+	IsFromOtherCluster bool   `protobuf:"varint,3,opt,name=is_from_other_cluster,json=isFromOtherCluster,proto3" json:"is_from_other_cluster,omitempty"`
+}
+
+func (x *UpdateEntryRequest) Reset() {
+	*x = UpdateEntryRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
 }
 
-func (m *UpdateEntryRequest) Reset()                    { *m = UpdateEntryRequest{} }
-func (m *UpdateEntryRequest) String() string            { return proto.CompactTextString(m) }
-func (*UpdateEntryRequest) ProtoMessage()               {}
-func (*UpdateEntryRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+func (x *UpdateEntryRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UpdateEntryRequest) ProtoMessage() {}
+
+func (x *UpdateEntryRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use UpdateEntryRequest.ProtoReflect.Descriptor instead.
+func (*UpdateEntryRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{12}
+}
 
-func (m *UpdateEntryRequest) GetDirectory() string {
-	if m != nil {
-		return m.Directory
+func (x *UpdateEntryRequest) GetDirectory() string {
+	if x != nil {
+		return x.Directory
 	}
 	return ""
 }
 
-func (m *UpdateEntryRequest) GetEntry() *Entry {
-	if m != nil {
-		return m.Entry
+func (x *UpdateEntryRequest) GetEntry() *Entry {
+	if x != nil {
+		return x.Entry
 	}
 	return nil
 }
 
+func (x *UpdateEntryRequest) GetIsFromOtherCluster() bool {
+	if x != nil {
+		return x.IsFromOtherCluster
+	}
+	return false
+}
+
 type UpdateEntryResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *UpdateEntryResponse) Reset() {
+	*x = UpdateEntryResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *UpdateEntryResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UpdateEntryResponse) ProtoMessage() {}
+
+func (x *UpdateEntryResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use UpdateEntryResponse.ProtoReflect.Descriptor instead.
+func (*UpdateEntryResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{13}
+}
+
+type AppendToEntryRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directory string       `protobuf:"bytes,1,opt,name=directory,proto3" json:"directory,omitempty"`
+	EntryName string       `protobuf:"bytes,2,opt,name=entry_name,json=entryName,proto3" json:"entry_name,omitempty"`
+	Chunks    []*FileChunk `protobuf:"bytes,3,rep,name=chunks,proto3" json:"chunks,omitempty"`
+}
+
+func (x *AppendToEntryRequest) Reset() {
+	*x = AppendToEntryRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AppendToEntryRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AppendToEntryRequest) ProtoMessage() {}
+
+func (x *AppendToEntryRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AppendToEntryRequest.ProtoReflect.Descriptor instead.
+func (*AppendToEntryRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{14}
+}
+
+func (x *AppendToEntryRequest) GetDirectory() string {
+	if x != nil {
+		return x.Directory
+	}
+	return ""
+}
+
+func (x *AppendToEntryRequest) GetEntryName() string {
+	if x != nil {
+		return x.EntryName
+	}
+	return ""
 }
 
-func (m *UpdateEntryResponse) Reset()                    { *m = UpdateEntryResponse{} }
-func (m *UpdateEntryResponse) String() string            { return proto.CompactTextString(m) }
-func (*UpdateEntryResponse) ProtoMessage()               {}
-func (*UpdateEntryResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+func (x *AppendToEntryRequest) GetChunks() []*FileChunk {
+	if x != nil {
+		return x.Chunks
+	}
+	return nil
+}
+
+type AppendToEntryResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *AppendToEntryResponse) Reset() {
+	*x = AppendToEntryResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AppendToEntryResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AppendToEntryResponse) ProtoMessage() {}
+
+func (x *AppendToEntryResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AppendToEntryResponse.ProtoReflect.Descriptor instead.
+func (*AppendToEntryResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{15}
+}
 
 type DeleteEntryRequest struct {
-	Directory string `protobuf:"bytes,1,opt,name=directory" json:"directory,omitempty"`
-	Name      string `protobuf:"bytes,2,opt,name=name" json:"name,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directory string `protobuf:"bytes,1,opt,name=directory,proto3" json:"directory,omitempty"`
+	Name      string `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
 	// bool is_directory = 3;
-	IsDeleteData bool `protobuf:"varint,4,opt,name=is_delete_data,json=isDeleteData" json:"is_delete_data,omitempty"`
-	IsRecursive  bool `protobuf:"varint,5,opt,name=is_recursive,json=isRecursive" json:"is_recursive,omitempty"`
+	IsDeleteData         bool `protobuf:"varint,4,opt,name=is_delete_data,json=isDeleteData,proto3" json:"is_delete_data,omitempty"`
+	IsRecursive          bool `protobuf:"varint,5,opt,name=is_recursive,json=isRecursive,proto3" json:"is_recursive,omitempty"`
+	IgnoreRecursiveError bool `protobuf:"varint,6,opt,name=ignore_recursive_error,json=ignoreRecursiveError,proto3" json:"ignore_recursive_error,omitempty"`
+	IsFromOtherCluster   bool `protobuf:"varint,7,opt,name=is_from_other_cluster,json=isFromOtherCluster,proto3" json:"is_from_other_cluster,omitempty"`
+}
+
+func (x *DeleteEntryRequest) Reset() {
+	*x = DeleteEntryRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[16]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteEntryRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *DeleteEntryRequest) Reset()                    { *m = DeleteEntryRequest{} }
-func (m *DeleteEntryRequest) String() string            { return proto.CompactTextString(m) }
-func (*DeleteEntryRequest) ProtoMessage()               {}
-func (*DeleteEntryRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+func (*DeleteEntryRequest) ProtoMessage() {}
 
-func (m *DeleteEntryRequest) GetDirectory() string {
-	if m != nil {
-		return m.Directory
+func (x *DeleteEntryRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[16]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteEntryRequest.ProtoReflect.Descriptor instead.
+func (*DeleteEntryRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{16}
+}
+
+func (x *DeleteEntryRequest) GetDirectory() string {
+	if x != nil {
+		return x.Directory
 	}
 	return ""
 }
 
-func (m *DeleteEntryRequest) GetName() string {
-	if m != nil {
-		return m.Name
+func (x *DeleteEntryRequest) GetName() string {
+	if x != nil {
+		return x.Name
 	}
 	return ""
 }
 
-func (m *DeleteEntryRequest) GetIsDeleteData() bool {
-	if m != nil {
-		return m.IsDeleteData
+func (x *DeleteEntryRequest) GetIsDeleteData() bool {
+	if x != nil {
+		return x.IsDeleteData
 	}
 	return false
 }
 
-func (m *DeleteEntryRequest) GetIsRecursive() bool {
-	if m != nil {
-		return m.IsRecursive
+func (x *DeleteEntryRequest) GetIsRecursive() bool {
+	if x != nil {
+		return x.IsRecursive
+	}
+	return false
+}
+
+func (x *DeleteEntryRequest) GetIgnoreRecursiveError() bool {
+	if x != nil {
+		return x.IgnoreRecursiveError
+	}
+	return false
+}
+
+func (x *DeleteEntryRequest) GetIsFromOtherCluster() bool {
+	if x != nil {
+		return x.IsFromOtherCluster
 	}
 	return false
 }
 
 type DeleteEntryResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Error string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *DeleteEntryResponse) Reset() {
+	*x = DeleteEntryResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[17]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteEntryResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *DeleteEntryResponse) Reset()                    { *m = DeleteEntryResponse{} }
-func (m *DeleteEntryResponse) String() string            { return proto.CompactTextString(m) }
-func (*DeleteEntryResponse) ProtoMessage()               {}
-func (*DeleteEntryResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+func (*DeleteEntryResponse) ProtoMessage() {}
+
+func (x *DeleteEntryResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[17]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteEntryResponse.ProtoReflect.Descriptor instead.
+func (*DeleteEntryResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{17}
+}
+
+func (x *DeleteEntryResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
+type AtomicRenameEntryRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	OldDirectory string `protobuf:"bytes,1,opt,name=old_directory,json=oldDirectory,proto3" json:"old_directory,omitempty"`
+	OldName      string `protobuf:"bytes,2,opt,name=old_name,json=oldName,proto3" json:"old_name,omitempty"`
+	NewDirectory string `protobuf:"bytes,3,opt,name=new_directory,json=newDirectory,proto3" json:"new_directory,omitempty"`
+	NewName      string `protobuf:"bytes,4,opt,name=new_name,json=newName,proto3" json:"new_name,omitempty"`
+}
+
+func (x *AtomicRenameEntryRequest) Reset() {
+	*x = AtomicRenameEntryRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[18]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AtomicRenameEntryRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AtomicRenameEntryRequest) ProtoMessage() {}
+
+func (x *AtomicRenameEntryRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[18]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AtomicRenameEntryRequest.ProtoReflect.Descriptor instead.
+func (*AtomicRenameEntryRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{18}
+}
+
+func (x *AtomicRenameEntryRequest) GetOldDirectory() string {
+	if x != nil {
+		return x.OldDirectory
+	}
+	return ""
+}
+
+func (x *AtomicRenameEntryRequest) GetOldName() string {
+	if x != nil {
+		return x.OldName
+	}
+	return ""
+}
+
+func (x *AtomicRenameEntryRequest) GetNewDirectory() string {
+	if x != nil {
+		return x.NewDirectory
+	}
+	return ""
+}
+
+func (x *AtomicRenameEntryRequest) GetNewName() string {
+	if x != nil {
+		return x.NewName
+	}
+	return ""
+}
+
+type AtomicRenameEntryResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *AtomicRenameEntryResponse) Reset() {
+	*x = AtomicRenameEntryResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[19]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AtomicRenameEntryResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AtomicRenameEntryResponse) ProtoMessage() {}
+
+func (x *AtomicRenameEntryResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[19]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AtomicRenameEntryResponse.ProtoReflect.Descriptor instead.
+func (*AtomicRenameEntryResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{19}
+}
 
 type AssignVolumeRequest struct {
-	Count       int32  `protobuf:"varint,1,opt,name=count" json:"count,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
-	Replication string `protobuf:"bytes,3,opt,name=replication" json:"replication,omitempty"`
-	TtlSec      int32  `protobuf:"varint,4,opt,name=ttl_sec,json=ttlSec" json:"ttl_sec,omitempty"`
-	DataCenter  string `protobuf:"bytes,5,opt,name=data_center,json=dataCenter" json:"data_center,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Count       int32  `protobuf:"varint,1,opt,name=count,proto3" json:"count,omitempty"`
+	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Replication string `protobuf:"bytes,3,opt,name=replication,proto3" json:"replication,omitempty"`
+	TtlSec      int32  `protobuf:"varint,4,opt,name=ttl_sec,json=ttlSec,proto3" json:"ttl_sec,omitempty"`
+	DataCenter  string `protobuf:"bytes,5,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
+	ParentPath  string `protobuf:"bytes,6,opt,name=parent_path,json=parentPath,proto3" json:"parent_path,omitempty"`
+}
+
+func (x *AssignVolumeRequest) Reset() {
+	*x = AssignVolumeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[20]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AssignVolumeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *AssignVolumeRequest) Reset()                    { *m = AssignVolumeRequest{} }
-func (m *AssignVolumeRequest) String() string            { return proto.CompactTextString(m) }
-func (*AssignVolumeRequest) ProtoMessage()               {}
-func (*AssignVolumeRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{14} }
+func (*AssignVolumeRequest) ProtoMessage() {}
 
-func (m *AssignVolumeRequest) GetCount() int32 {
-	if m != nil {
-		return m.Count
+func (x *AssignVolumeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[20]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AssignVolumeRequest.ProtoReflect.Descriptor instead.
+func (*AssignVolumeRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{20}
+}
+
+func (x *AssignVolumeRequest) GetCount() int32 {
+	if x != nil {
+		return x.Count
 	}
 	return 0
 }
 
-func (m *AssignVolumeRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *AssignVolumeRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *AssignVolumeRequest) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *AssignVolumeRequest) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *AssignVolumeRequest) GetTtlSec() int32 {
-	if m != nil {
-		return m.TtlSec
+func (x *AssignVolumeRequest) GetTtlSec() int32 {
+	if x != nil {
+		return x.TtlSec
 	}
 	return 0
 }
 
-func (m *AssignVolumeRequest) GetDataCenter() string {
-	if m != nil {
-		return m.DataCenter
+func (x *AssignVolumeRequest) GetDataCenter() string {
+	if x != nil {
+		return x.DataCenter
+	}
+	return ""
+}
+
+func (x *AssignVolumeRequest) GetParentPath() string {
+	if x != nil {
+		return x.ParentPath
 	}
 	return ""
 }
 
 type AssignVolumeResponse struct {
-	FileId    string `protobuf:"bytes,1,opt,name=file_id,json=fileId" json:"file_id,omitempty"`
-	Url       string `protobuf:"bytes,2,opt,name=url" json:"url,omitempty"`
-	PublicUrl string `protobuf:"bytes,3,opt,name=public_url,json=publicUrl" json:"public_url,omitempty"`
-	Count     int32  `protobuf:"varint,4,opt,name=count" json:"count,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FileId      string `protobuf:"bytes,1,opt,name=file_id,json=fileId,proto3" json:"file_id,omitempty"`
+	Url         string `protobuf:"bytes,2,opt,name=url,proto3" json:"url,omitempty"`
+	PublicUrl   string `protobuf:"bytes,3,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
+	Count       int32  `protobuf:"varint,4,opt,name=count,proto3" json:"count,omitempty"`
+	Auth        string `protobuf:"bytes,5,opt,name=auth,proto3" json:"auth,omitempty"`
+	Collection  string `protobuf:"bytes,6,opt,name=collection,proto3" json:"collection,omitempty"`
+	Replication string `protobuf:"bytes,7,opt,name=replication,proto3" json:"replication,omitempty"`
+	Error       string `protobuf:"bytes,8,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *AssignVolumeResponse) Reset() {
+	*x = AssignVolumeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[21]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
 }
 
-func (m *AssignVolumeResponse) Reset()                    { *m = AssignVolumeResponse{} }
-func (m *AssignVolumeResponse) String() string            { return proto.CompactTextString(m) }
-func (*AssignVolumeResponse) ProtoMessage()               {}
-func (*AssignVolumeResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{15} }
+func (x *AssignVolumeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AssignVolumeResponse) ProtoMessage() {}
+
+func (x *AssignVolumeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[21]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AssignVolumeResponse.ProtoReflect.Descriptor instead.
+func (*AssignVolumeResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{21}
+}
 
-func (m *AssignVolumeResponse) GetFileId() string {
-	if m != nil {
-		return m.FileId
+func (x *AssignVolumeResponse) GetFileId() string {
+	if x != nil {
+		return x.FileId
 	}
 	return ""
 }
 
-func (m *AssignVolumeResponse) GetUrl() string {
-	if m != nil {
-		return m.Url
+func (x *AssignVolumeResponse) GetUrl() string {
+	if x != nil {
+		return x.Url
 	}
 	return ""
 }
 
-func (m *AssignVolumeResponse) GetPublicUrl() string {
-	if m != nil {
-		return m.PublicUrl
+func (x *AssignVolumeResponse) GetPublicUrl() string {
+	if x != nil {
+		return x.PublicUrl
 	}
 	return ""
 }
 
-func (m *AssignVolumeResponse) GetCount() int32 {
-	if m != nil {
-		return m.Count
+func (x *AssignVolumeResponse) GetCount() int32 {
+	if x != nil {
+		return x.Count
 	}
 	return 0
 }
 
+func (x *AssignVolumeResponse) GetAuth() string {
+	if x != nil {
+		return x.Auth
+	}
+	return ""
+}
+
+func (x *AssignVolumeResponse) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *AssignVolumeResponse) GetReplication() string {
+	if x != nil {
+		return x.Replication
+	}
+	return ""
+}
+
+func (x *AssignVolumeResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
 type LookupVolumeRequest struct {
-	VolumeIds []string `protobuf:"bytes,1,rep,name=volume_ids,json=volumeIds" json:"volume_ids,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeIds []string `protobuf:"bytes,1,rep,name=volume_ids,json=volumeIds,proto3" json:"volume_ids,omitempty"`
+}
+
+func (x *LookupVolumeRequest) Reset() {
+	*x = LookupVolumeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[22]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupVolumeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *LookupVolumeRequest) Reset()                    { *m = LookupVolumeRequest{} }
-func (m *LookupVolumeRequest) String() string            { return proto.CompactTextString(m) }
-func (*LookupVolumeRequest) ProtoMessage()               {}
-func (*LookupVolumeRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{16} }
+func (*LookupVolumeRequest) ProtoMessage() {}
 
-func (m *LookupVolumeRequest) GetVolumeIds() []string {
-	if m != nil {
-		return m.VolumeIds
+func (x *LookupVolumeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[22]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupVolumeRequest.ProtoReflect.Descriptor instead.
+func (*LookupVolumeRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{22}
+}
+
+func (x *LookupVolumeRequest) GetVolumeIds() []string {
+	if x != nil {
+		return x.VolumeIds
 	}
 	return nil
 }
 
 type Locations struct {
-	Locations []*Location `protobuf:"bytes,1,rep,name=locations" json:"locations,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Locations []*Location `protobuf:"bytes,1,rep,name=locations,proto3" json:"locations,omitempty"`
 }
 
-func (m *Locations) Reset()                    { *m = Locations{} }
-func (m *Locations) String() string            { return proto.CompactTextString(m) }
-func (*Locations) ProtoMessage()               {}
-func (*Locations) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{17} }
+func (x *Locations) Reset() {
+	*x = Locations{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[23]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Locations) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Locations) ProtoMessage() {}
+
+func (x *Locations) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[23]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
 
-func (m *Locations) GetLocations() []*Location {
-	if m != nil {
-		return m.Locations
+// Deprecated: Use Locations.ProtoReflect.Descriptor instead.
+func (*Locations) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{23}
+}
+
+func (x *Locations) GetLocations() []*Location {
+	if x != nil {
+		return x.Locations
 	}
 	return nil
 }
 
 type Location struct {
-	Url       string `protobuf:"bytes,1,opt,name=url" json:"url,omitempty"`
-	PublicUrl string `protobuf:"bytes,2,opt,name=public_url,json=publicUrl" json:"public_url,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Url       string `protobuf:"bytes,1,opt,name=url,proto3" json:"url,omitempty"`
+	PublicUrl string `protobuf:"bytes,2,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
+}
+
+func (x *Location) Reset() {
+	*x = Location{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[24]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Location) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Location) ProtoMessage() {}
+
+func (x *Location) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[24]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *Location) Reset()                    { *m = Location{} }
-func (m *Location) String() string            { return proto.CompactTextString(m) }
-func (*Location) ProtoMessage()               {}
-func (*Location) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{18} }
+// Deprecated: Use Location.ProtoReflect.Descriptor instead.
+func (*Location) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{24}
+}
 
-func (m *Location) GetUrl() string {
-	if m != nil {
-		return m.Url
+func (x *Location) GetUrl() string {
+	if x != nil {
+		return x.Url
 	}
 	return ""
 }
 
-func (m *Location) GetPublicUrl() string {
-	if m != nil {
-		return m.PublicUrl
+func (x *Location) GetPublicUrl() string {
+	if x != nil {
+		return x.PublicUrl
 	}
 	return ""
 }
 
 type LookupVolumeResponse struct {
-	LocationsMap map[string]*Locations `protobuf:"bytes,1,rep,name=locations_map,json=locationsMap" json:"locations_map,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"bytes,2,opt,name=value"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	LocationsMap map[string]*Locations `protobuf:"bytes,1,rep,name=locations_map,json=locationsMap,proto3" json:"locations_map,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
-func (m *LookupVolumeResponse) Reset()                    { *m = LookupVolumeResponse{} }
-func (m *LookupVolumeResponse) String() string            { return proto.CompactTextString(m) }
-func (*LookupVolumeResponse) ProtoMessage()               {}
-func (*LookupVolumeResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19} }
+func (x *LookupVolumeResponse) Reset() {
+	*x = LookupVolumeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[25]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupVolumeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupVolumeResponse) ProtoMessage() {}
 
-func (m *LookupVolumeResponse) GetLocationsMap() map[string]*Locations {
-	if m != nil {
-		return m.LocationsMap
+func (x *LookupVolumeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[25]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupVolumeResponse.ProtoReflect.Descriptor instead.
+func (*LookupVolumeResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{25}
+}
+
+func (x *LookupVolumeResponse) GetLocationsMap() map[string]*Locations {
+	if x != nil {
+		return x.LocationsMap
 	}
 	return nil
 }
 
 type DeleteCollectionRequest struct {
-	Collection string `protobuf:"bytes,1,opt,name=collection" json:"collection,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Collection string `protobuf:"bytes,1,opt,name=collection,proto3" json:"collection,omitempty"`
+}
+
+func (x *DeleteCollectionRequest) Reset() {
+	*x = DeleteCollectionRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[26]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteCollectionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *DeleteCollectionRequest) Reset()                    { *m = DeleteCollectionRequest{} }
-func (m *DeleteCollectionRequest) String() string            { return proto.CompactTextString(m) }
-func (*DeleteCollectionRequest) ProtoMessage()               {}
-func (*DeleteCollectionRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{20} }
+func (*DeleteCollectionRequest) ProtoMessage() {}
 
-func (m *DeleteCollectionRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *DeleteCollectionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[26]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteCollectionRequest.ProtoReflect.Descriptor instead.
+func (*DeleteCollectionRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{26}
+}
+
+func (x *DeleteCollectionRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
 type DeleteCollectionResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *DeleteCollectionResponse) Reset() {
+	*x = DeleteCollectionResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[27]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteCollectionResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *DeleteCollectionResponse) Reset()                    { *m = DeleteCollectionResponse{} }
-func (m *DeleteCollectionResponse) String() string            { return proto.CompactTextString(m) }
-func (*DeleteCollectionResponse) ProtoMessage()               {}
-func (*DeleteCollectionResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{21} }
+func (*DeleteCollectionResponse) ProtoMessage() {}
+
+func (x *DeleteCollectionResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[27]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteCollectionResponse.ProtoReflect.Descriptor instead.
+func (*DeleteCollectionResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{27}
+}
 
 type StatisticsRequest struct {
-	Replication string `protobuf:"bytes,1,opt,name=replication" json:"replication,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
-	Ttl         string `protobuf:"bytes,3,opt,name=ttl" json:"ttl,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
+	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
+}
+
+func (x *StatisticsRequest) Reset() {
+	*x = StatisticsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[28]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatisticsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *StatisticsRequest) Reset()                    { *m = StatisticsRequest{} }
-func (m *StatisticsRequest) String() string            { return proto.CompactTextString(m) }
-func (*StatisticsRequest) ProtoMessage()               {}
-func (*StatisticsRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{22} }
+func (*StatisticsRequest) ProtoMessage() {}
 
-func (m *StatisticsRequest) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *StatisticsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[28]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StatisticsRequest.ProtoReflect.Descriptor instead.
+func (*StatisticsRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{28}
+}
+
+func (x *StatisticsRequest) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *StatisticsRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *StatisticsRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *StatisticsRequest) GetTtl() string {
-	if m != nil {
-		return m.Ttl
+func (x *StatisticsRequest) GetTtl() string {
+	if x != nil {
+		return x.Ttl
 	}
 	return ""
 }
 
 type StatisticsResponse struct {
-	Replication string `protobuf:"bytes,1,opt,name=replication" json:"replication,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
-	Ttl         string `protobuf:"bytes,3,opt,name=ttl" json:"ttl,omitempty"`
-	TotalSize   uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize" json:"total_size,omitempty"`
-	UsedSize    uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize" json:"used_size,omitempty"`
-	FileCount   uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount" json:"file_count,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
+	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	TotalSize   uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize,proto3" json:"total_size,omitempty"`
+	UsedSize    uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize,proto3" json:"used_size,omitempty"`
+	FileCount   uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
+}
+
+func (x *StatisticsResponse) Reset() {
+	*x = StatisticsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[29]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatisticsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StatisticsResponse) ProtoMessage() {}
+
+func (x *StatisticsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[29]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *StatisticsResponse) Reset()                    { *m = StatisticsResponse{} }
-func (m *StatisticsResponse) String() string            { return proto.CompactTextString(m) }
-func (*StatisticsResponse) ProtoMessage()               {}
-func (*StatisticsResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{23} }
+// Deprecated: Use StatisticsResponse.ProtoReflect.Descriptor instead.
+func (*StatisticsResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{29}
+}
 
-func (m *StatisticsResponse) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *StatisticsResponse) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *StatisticsResponse) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *StatisticsResponse) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *StatisticsResponse) GetTtl() string {
-	if m != nil {
-		return m.Ttl
+func (x *StatisticsResponse) GetTtl() string {
+	if x != nil {
+		return x.Ttl
 	}
 	return ""
 }
 
-func (m *StatisticsResponse) GetTotalSize() uint64 {
-	if m != nil {
-		return m.TotalSize
+func (x *StatisticsResponse) GetTotalSize() uint64 {
+	if x != nil {
+		return x.TotalSize
 	}
 	return 0
 }
 
-func (m *StatisticsResponse) GetUsedSize() uint64 {
-	if m != nil {
-		return m.UsedSize
+func (x *StatisticsResponse) GetUsedSize() uint64 {
+	if x != nil {
+		return x.UsedSize
 	}
 	return 0
 }
 
-func (m *StatisticsResponse) GetFileCount() uint64 {
-	if m != nil {
-		return m.FileCount
+func (x *StatisticsResponse) GetFileCount() uint64 {
+	if x != nil {
+		return x.FileCount
 	}
 	return 0
 }
 
-func init() {
-	proto.RegisterType((*LookupDirectoryEntryRequest)(nil), "filer_pb.LookupDirectoryEntryRequest")
-	proto.RegisterType((*LookupDirectoryEntryResponse)(nil), "filer_pb.LookupDirectoryEntryResponse")
-	proto.RegisterType((*ListEntriesRequest)(nil), "filer_pb.ListEntriesRequest")
-	proto.RegisterType((*ListEntriesResponse)(nil), "filer_pb.ListEntriesResponse")
-	proto.RegisterType((*Entry)(nil), "filer_pb.Entry")
-	proto.RegisterType((*EventNotification)(nil), "filer_pb.EventNotification")
-	proto.RegisterType((*FileChunk)(nil), "filer_pb.FileChunk")
-	proto.RegisterType((*FuseAttributes)(nil), "filer_pb.FuseAttributes")
-	proto.RegisterType((*CreateEntryRequest)(nil), "filer_pb.CreateEntryRequest")
-	proto.RegisterType((*CreateEntryResponse)(nil), "filer_pb.CreateEntryResponse")
-	proto.RegisterType((*UpdateEntryRequest)(nil), "filer_pb.UpdateEntryRequest")
-	proto.RegisterType((*UpdateEntryResponse)(nil), "filer_pb.UpdateEntryResponse")
-	proto.RegisterType((*DeleteEntryRequest)(nil), "filer_pb.DeleteEntryRequest")
-	proto.RegisterType((*DeleteEntryResponse)(nil), "filer_pb.DeleteEntryResponse")
-	proto.RegisterType((*AssignVolumeRequest)(nil), "filer_pb.AssignVolumeRequest")
-	proto.RegisterType((*AssignVolumeResponse)(nil), "filer_pb.AssignVolumeResponse")
-	proto.RegisterType((*LookupVolumeRequest)(nil), "filer_pb.LookupVolumeRequest")
-	proto.RegisterType((*Locations)(nil), "filer_pb.Locations")
-	proto.RegisterType((*Location)(nil), "filer_pb.Location")
-	proto.RegisterType((*LookupVolumeResponse)(nil), "filer_pb.LookupVolumeResponse")
-	proto.RegisterType((*DeleteCollectionRequest)(nil), "filer_pb.DeleteCollectionRequest")
-	proto.RegisterType((*DeleteCollectionResponse)(nil), "filer_pb.DeleteCollectionResponse")
-	proto.RegisterType((*StatisticsRequest)(nil), "filer_pb.StatisticsRequest")
-	proto.RegisterType((*StatisticsResponse)(nil), "filer_pb.StatisticsResponse")
+type GetFilerConfigurationRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *GetFilerConfigurationRequest) Reset() {
+	*x = GetFilerConfigurationRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[30]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetFilerConfigurationRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetFilerConfigurationRequest) ProtoMessage() {}
+
+func (x *GetFilerConfigurationRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[30]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetFilerConfigurationRequest.ProtoReflect.Descriptor instead.
+func (*GetFilerConfigurationRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{30}
+}
+
+type GetFilerConfigurationResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Masters     []string `protobuf:"bytes,1,rep,name=masters,proto3" json:"masters,omitempty"`
+	Replication string   `protobuf:"bytes,2,opt,name=replication,proto3" json:"replication,omitempty"`
+	Collection  string   `protobuf:"bytes,3,opt,name=collection,proto3" json:"collection,omitempty"`
+	MaxMb       uint32   `protobuf:"varint,4,opt,name=max_mb,json=maxMb,proto3" json:"max_mb,omitempty"`
+	DirBuckets  string   `protobuf:"bytes,5,opt,name=dir_buckets,json=dirBuckets,proto3" json:"dir_buckets,omitempty"`
+	Cipher      bool     `protobuf:"varint,7,opt,name=cipher,proto3" json:"cipher,omitempty"`
+}
+
+func (x *GetFilerConfigurationResponse) Reset() {
+	*x = GetFilerConfigurationResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[31]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetFilerConfigurationResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetFilerConfigurationResponse) ProtoMessage() {}
+
+func (x *GetFilerConfigurationResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[31]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetFilerConfigurationResponse.ProtoReflect.Descriptor instead.
+func (*GetFilerConfigurationResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{31}
+}
+
+func (x *GetFilerConfigurationResponse) GetMasters() []string {
+	if x != nil {
+		return x.Masters
+	}
+	return nil
+}
+
+func (x *GetFilerConfigurationResponse) GetReplication() string {
+	if x != nil {
+		return x.Replication
+	}
+	return ""
+}
+
+func (x *GetFilerConfigurationResponse) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *GetFilerConfigurationResponse) GetMaxMb() uint32 {
+	if x != nil {
+		return x.MaxMb
+	}
+	return 0
+}
+
+func (x *GetFilerConfigurationResponse) GetDirBuckets() string {
+	if x != nil {
+		return x.DirBuckets
+	}
+	return ""
+}
+
+func (x *GetFilerConfigurationResponse) GetCipher() bool {
+	if x != nil {
+		return x.Cipher
+	}
+	return false
+}
+
+type SubscribeMetadataRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ClientName string `protobuf:"bytes,1,opt,name=client_name,json=clientName,proto3" json:"client_name,omitempty"`
+	PathPrefix string `protobuf:"bytes,2,opt,name=path_prefix,json=pathPrefix,proto3" json:"path_prefix,omitempty"`
+	SinceNs    int64  `protobuf:"varint,3,opt,name=since_ns,json=sinceNs,proto3" json:"since_ns,omitempty"`
+}
+
+func (x *SubscribeMetadataRequest) Reset() {
+	*x = SubscribeMetadataRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[32]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscribeMetadataRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscribeMetadataRequest) ProtoMessage() {}
+
+func (x *SubscribeMetadataRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[32]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SubscribeMetadataRequest.ProtoReflect.Descriptor instead.
+func (*SubscribeMetadataRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{32}
+}
+
+func (x *SubscribeMetadataRequest) GetClientName() string {
+	if x != nil {
+		return x.ClientName
+	}
+	return ""
+}
+
+func (x *SubscribeMetadataRequest) GetPathPrefix() string {
+	if x != nil {
+		return x.PathPrefix
+	}
+	return ""
+}
+
+func (x *SubscribeMetadataRequest) GetSinceNs() int64 {
+	if x != nil {
+		return x.SinceNs
+	}
+	return 0
+}
+
+type SubscribeMetadataResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Directory         string             `protobuf:"bytes,1,opt,name=directory,proto3" json:"directory,omitempty"`
+	EventNotification *EventNotification `protobuf:"bytes,2,opt,name=event_notification,json=eventNotification,proto3" json:"event_notification,omitempty"`
+	TsNs              int64              `protobuf:"varint,3,opt,name=ts_ns,json=tsNs,proto3" json:"ts_ns,omitempty"`
+}
+
+func (x *SubscribeMetadataResponse) Reset() {
+	*x = SubscribeMetadataResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[33]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscribeMetadataResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscribeMetadataResponse) ProtoMessage() {}
+
+func (x *SubscribeMetadataResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[33]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SubscribeMetadataResponse.ProtoReflect.Descriptor instead.
+func (*SubscribeMetadataResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{33}
+}
+
+func (x *SubscribeMetadataResponse) GetDirectory() string {
+	if x != nil {
+		return x.Directory
+	}
+	return ""
+}
+
+func (x *SubscribeMetadataResponse) GetEventNotification() *EventNotification {
+	if x != nil {
+		return x.EventNotification
+	}
+	return nil
+}
+
+func (x *SubscribeMetadataResponse) GetTsNs() int64 {
+	if x != nil {
+		return x.TsNs
+	}
+	return 0
+}
+
+type LogEntry struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	TsNs             int64  `protobuf:"varint,1,opt,name=ts_ns,json=tsNs,proto3" json:"ts_ns,omitempty"`
+	PartitionKeyHash int32  `protobuf:"varint,2,opt,name=partition_key_hash,json=partitionKeyHash,proto3" json:"partition_key_hash,omitempty"`
+	Data             []byte `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *LogEntry) Reset() {
+	*x = LogEntry{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[34]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LogEntry) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LogEntry) ProtoMessage() {}
+
+func (x *LogEntry) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[34]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LogEntry.ProtoReflect.Descriptor instead.
+func (*LogEntry) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{34}
+}
+
+func (x *LogEntry) GetTsNs() int64 {
+	if x != nil {
+		return x.TsNs
+	}
+	return 0
+}
+
+func (x *LogEntry) GetPartitionKeyHash() int32 {
+	if x != nil {
+		return x.PartitionKeyHash
+	}
+	return 0
+}
+
+func (x *LogEntry) GetData() []byte {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+type KeepConnectedRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name      string   `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	GrpcPort  uint32   `protobuf:"varint,2,opt,name=grpc_port,json=grpcPort,proto3" json:"grpc_port,omitempty"`
+	Resources []string `protobuf:"bytes,3,rep,name=resources,proto3" json:"resources,omitempty"`
+}
+
+func (x *KeepConnectedRequest) Reset() {
+	*x = KeepConnectedRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[35]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KeepConnectedRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KeepConnectedRequest) ProtoMessage() {}
+
+func (x *KeepConnectedRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[35]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use KeepConnectedRequest.ProtoReflect.Descriptor instead.
+func (*KeepConnectedRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{35}
+}
+
+func (x *KeepConnectedRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *KeepConnectedRequest) GetGrpcPort() uint32 {
+	if x != nil {
+		return x.GrpcPort
+	}
+	return 0
+}
+
+func (x *KeepConnectedRequest) GetResources() []string {
+	if x != nil {
+		return x.Resources
+	}
+	return nil
+}
+
+type KeepConnectedResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *KeepConnectedResponse) Reset() {
+	*x = KeepConnectedResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[36]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KeepConnectedResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KeepConnectedResponse) ProtoMessage() {}
+
+func (x *KeepConnectedResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[36]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use KeepConnectedResponse.ProtoReflect.Descriptor instead.
+func (*KeepConnectedResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{36}
+}
+
+type LocateBrokerRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Resource string `protobuf:"bytes,1,opt,name=resource,proto3" json:"resource,omitempty"`
+}
+
+func (x *LocateBrokerRequest) Reset() {
+	*x = LocateBrokerRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[37]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LocateBrokerRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LocateBrokerRequest) ProtoMessage() {}
+
+func (x *LocateBrokerRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[37]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LocateBrokerRequest.ProtoReflect.Descriptor instead.
+func (*LocateBrokerRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{37}
+}
+
+func (x *LocateBrokerRequest) GetResource() string {
+	if x != nil {
+		return x.Resource
+	}
+	return ""
+}
+
+type LocateBrokerResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Found     bool                             `protobuf:"varint,1,opt,name=found,proto3" json:"found,omitempty"`
+	Resources []*LocateBrokerResponse_Resource `protobuf:"bytes,2,rep,name=resources,proto3" json:"resources,omitempty"`
+}
+
+func (x *LocateBrokerResponse) Reset() {
+	*x = LocateBrokerResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[38]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LocateBrokerResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LocateBrokerResponse) ProtoMessage() {}
+
+func (x *LocateBrokerResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[38]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LocateBrokerResponse.ProtoReflect.Descriptor instead.
+func (*LocateBrokerResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{38}
+}
+
+func (x *LocateBrokerResponse) GetFound() bool {
+	if x != nil {
+		return x.Found
+	}
+	return false
+}
+
+func (x *LocateBrokerResponse) GetResources() []*LocateBrokerResponse_Resource {
+	if x != nil {
+		return x.Resources
+	}
+	return nil
+}
+
+// if found, send the exact address
+// if not found, send the full list of existing brokers
+type LocateBrokerResponse_Resource struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	GrpcAddresses string `protobuf:"bytes,1,opt,name=grpc_addresses,json=grpcAddresses,proto3" json:"grpc_addresses,omitempty"`
+	ResourceCount int32  `protobuf:"varint,2,opt,name=resource_count,json=resourceCount,proto3" json:"resource_count,omitempty"`
+}
+
+func (x *LocateBrokerResponse_Resource) Reset() {
+	*x = LocateBrokerResponse_Resource{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[41]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LocateBrokerResponse_Resource) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LocateBrokerResponse_Resource) ProtoMessage() {}
+
+func (x *LocateBrokerResponse_Resource) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[41]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LocateBrokerResponse_Resource.ProtoReflect.Descriptor instead.
+func (*LocateBrokerResponse_Resource) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{38, 0}
+}
+
+func (x *LocateBrokerResponse_Resource) GetGrpcAddresses() string {
+	if x != nil {
+		return x.GrpcAddresses
+	}
+	return ""
+}
+
+func (x *LocateBrokerResponse_Resource) GetResourceCount() int32 {
+	if x != nil {
+		return x.ResourceCount
+	}
+	return 0
+}
+
+var File_filer_proto protoreflect.FileDescriptor
+
+var file_filer_proto_rawDesc = []byte{
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+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_filer_proto_rawDescOnce sync.Once
+	file_filer_proto_rawDescData = file_filer_proto_rawDesc
+)
+
+func file_filer_proto_rawDescGZIP() []byte {
+	file_filer_proto_rawDescOnce.Do(func() {
+		file_filer_proto_rawDescData = protoimpl.X.CompressGZIP(file_filer_proto_rawDescData)
+	})
+	return file_filer_proto_rawDescData
+}
+
+var file_filer_proto_msgTypes = make([]protoimpl.MessageInfo, 42)
+var file_filer_proto_goTypes = []interface{}{
+	(*LookupDirectoryEntryRequest)(nil),   // 0: filer_pb.LookupDirectoryEntryRequest
+	(*LookupDirectoryEntryResponse)(nil),  // 1: filer_pb.LookupDirectoryEntryResponse
+	(*ListEntriesRequest)(nil),            // 2: filer_pb.ListEntriesRequest
+	(*ListEntriesResponse)(nil),           // 3: filer_pb.ListEntriesResponse
+	(*Entry)(nil),                         // 4: filer_pb.Entry
+	(*FullEntry)(nil),                     // 5: filer_pb.FullEntry
+	(*EventNotification)(nil),             // 6: filer_pb.EventNotification
+	(*FileChunk)(nil),                     // 7: filer_pb.FileChunk
+	(*FileId)(nil),                        // 8: filer_pb.FileId
+	(*FuseAttributes)(nil),                // 9: filer_pb.FuseAttributes
+	(*CreateEntryRequest)(nil),            // 10: filer_pb.CreateEntryRequest
+	(*CreateEntryResponse)(nil),           // 11: filer_pb.CreateEntryResponse
+	(*UpdateEntryRequest)(nil),            // 12: filer_pb.UpdateEntryRequest
+	(*UpdateEntryResponse)(nil),           // 13: filer_pb.UpdateEntryResponse
+	(*AppendToEntryRequest)(nil),          // 14: filer_pb.AppendToEntryRequest
+	(*AppendToEntryResponse)(nil),         // 15: filer_pb.AppendToEntryResponse
+	(*DeleteEntryRequest)(nil),            // 16: filer_pb.DeleteEntryRequest
+	(*DeleteEntryResponse)(nil),           // 17: filer_pb.DeleteEntryResponse
+	(*AtomicRenameEntryRequest)(nil),      // 18: filer_pb.AtomicRenameEntryRequest
+	(*AtomicRenameEntryResponse)(nil),     // 19: filer_pb.AtomicRenameEntryResponse
+	(*AssignVolumeRequest)(nil),           // 20: filer_pb.AssignVolumeRequest
+	(*AssignVolumeResponse)(nil),          // 21: filer_pb.AssignVolumeResponse
+	(*LookupVolumeRequest)(nil),           // 22: filer_pb.LookupVolumeRequest
+	(*Locations)(nil),                     // 23: filer_pb.Locations
+	(*Location)(nil),                      // 24: filer_pb.Location
+	(*LookupVolumeResponse)(nil),          // 25: filer_pb.LookupVolumeResponse
+	(*DeleteCollectionRequest)(nil),       // 26: filer_pb.DeleteCollectionRequest
+	(*DeleteCollectionResponse)(nil),      // 27: filer_pb.DeleteCollectionResponse
+	(*StatisticsRequest)(nil),             // 28: filer_pb.StatisticsRequest
+	(*StatisticsResponse)(nil),            // 29: filer_pb.StatisticsResponse
+	(*GetFilerConfigurationRequest)(nil),  // 30: filer_pb.GetFilerConfigurationRequest
+	(*GetFilerConfigurationResponse)(nil), // 31: filer_pb.GetFilerConfigurationResponse
+	(*SubscribeMetadataRequest)(nil),      // 32: filer_pb.SubscribeMetadataRequest
+	(*SubscribeMetadataResponse)(nil),     // 33: filer_pb.SubscribeMetadataResponse
+	(*LogEntry)(nil),                      // 34: filer_pb.LogEntry
+	(*KeepConnectedRequest)(nil),          // 35: filer_pb.KeepConnectedRequest
+	(*KeepConnectedResponse)(nil),         // 36: filer_pb.KeepConnectedResponse
+	(*LocateBrokerRequest)(nil),           // 37: filer_pb.LocateBrokerRequest
+	(*LocateBrokerResponse)(nil),          // 38: filer_pb.LocateBrokerResponse
+	nil,                                   // 39: filer_pb.Entry.ExtendedEntry
+	nil,                                   // 40: filer_pb.LookupVolumeResponse.LocationsMapEntry
+	(*LocateBrokerResponse_Resource)(nil), // 41: filer_pb.LocateBrokerResponse.Resource
+}
+var file_filer_proto_depIdxs = []int32{
+	4,  // 0: filer_pb.LookupDirectoryEntryResponse.entry:type_name -> filer_pb.Entry
+	4,  // 1: filer_pb.ListEntriesResponse.entry:type_name -> filer_pb.Entry
+	7,  // 2: filer_pb.Entry.chunks:type_name -> filer_pb.FileChunk
+	9,  // 3: filer_pb.Entry.attributes:type_name -> filer_pb.FuseAttributes
+	39, // 4: filer_pb.Entry.extended:type_name -> filer_pb.Entry.ExtendedEntry
+	4,  // 5: filer_pb.FullEntry.entry:type_name -> filer_pb.Entry
+	4,  // 6: filer_pb.EventNotification.old_entry:type_name -> filer_pb.Entry
+	4,  // 7: filer_pb.EventNotification.new_entry:type_name -> filer_pb.Entry
+	8,  // 8: filer_pb.FileChunk.fid:type_name -> filer_pb.FileId
+	8,  // 9: filer_pb.FileChunk.source_fid:type_name -> filer_pb.FileId
+	4,  // 10: filer_pb.CreateEntryRequest.entry:type_name -> filer_pb.Entry
+	4,  // 11: filer_pb.UpdateEntryRequest.entry:type_name -> filer_pb.Entry
+	7,  // 12: filer_pb.AppendToEntryRequest.chunks:type_name -> filer_pb.FileChunk
+	24, // 13: filer_pb.Locations.locations:type_name -> filer_pb.Location
+	40, // 14: filer_pb.LookupVolumeResponse.locations_map:type_name -> filer_pb.LookupVolumeResponse.LocationsMapEntry
+	6,  // 15: filer_pb.SubscribeMetadataResponse.event_notification:type_name -> filer_pb.EventNotification
+	41, // 16: filer_pb.LocateBrokerResponse.resources:type_name -> filer_pb.LocateBrokerResponse.Resource
+	23, // 17: filer_pb.LookupVolumeResponse.LocationsMapEntry.value:type_name -> filer_pb.Locations
+	0,  // 18: filer_pb.SeaweedFiler.LookupDirectoryEntry:input_type -> filer_pb.LookupDirectoryEntryRequest
+	2,  // 19: filer_pb.SeaweedFiler.ListEntries:input_type -> filer_pb.ListEntriesRequest
+	10, // 20: filer_pb.SeaweedFiler.CreateEntry:input_type -> filer_pb.CreateEntryRequest
+	12, // 21: filer_pb.SeaweedFiler.UpdateEntry:input_type -> filer_pb.UpdateEntryRequest
+	14, // 22: filer_pb.SeaweedFiler.AppendToEntry:input_type -> filer_pb.AppendToEntryRequest
+	16, // 23: filer_pb.SeaweedFiler.DeleteEntry:input_type -> filer_pb.DeleteEntryRequest
+	18, // 24: filer_pb.SeaweedFiler.AtomicRenameEntry:input_type -> filer_pb.AtomicRenameEntryRequest
+	20, // 25: filer_pb.SeaweedFiler.AssignVolume:input_type -> filer_pb.AssignVolumeRequest
+	22, // 26: filer_pb.SeaweedFiler.LookupVolume:input_type -> filer_pb.LookupVolumeRequest
+	26, // 27: filer_pb.SeaweedFiler.DeleteCollection:input_type -> filer_pb.DeleteCollectionRequest
+	28, // 28: filer_pb.SeaweedFiler.Statistics:input_type -> filer_pb.StatisticsRequest
+	30, // 29: filer_pb.SeaweedFiler.GetFilerConfiguration:input_type -> filer_pb.GetFilerConfigurationRequest
+	32, // 30: filer_pb.SeaweedFiler.SubscribeMetadata:input_type -> filer_pb.SubscribeMetadataRequest
+	32, // 31: filer_pb.SeaweedFiler.SubscribeLocalMetadata:input_type -> filer_pb.SubscribeMetadataRequest
+	35, // 32: filer_pb.SeaweedFiler.KeepConnected:input_type -> filer_pb.KeepConnectedRequest
+	37, // 33: filer_pb.SeaweedFiler.LocateBroker:input_type -> filer_pb.LocateBrokerRequest
+	1,  // 34: filer_pb.SeaweedFiler.LookupDirectoryEntry:output_type -> filer_pb.LookupDirectoryEntryResponse
+	3,  // 35: filer_pb.SeaweedFiler.ListEntries:output_type -> filer_pb.ListEntriesResponse
+	11, // 36: filer_pb.SeaweedFiler.CreateEntry:output_type -> filer_pb.CreateEntryResponse
+	13, // 37: filer_pb.SeaweedFiler.UpdateEntry:output_type -> filer_pb.UpdateEntryResponse
+	15, // 38: filer_pb.SeaweedFiler.AppendToEntry:output_type -> filer_pb.AppendToEntryResponse
+	17, // 39: filer_pb.SeaweedFiler.DeleteEntry:output_type -> filer_pb.DeleteEntryResponse
+	19, // 40: filer_pb.SeaweedFiler.AtomicRenameEntry:output_type -> filer_pb.AtomicRenameEntryResponse
+	21, // 41: filer_pb.SeaweedFiler.AssignVolume:output_type -> filer_pb.AssignVolumeResponse
+	25, // 42: filer_pb.SeaweedFiler.LookupVolume:output_type -> filer_pb.LookupVolumeResponse
+	27, // 43: filer_pb.SeaweedFiler.DeleteCollection:output_type -> filer_pb.DeleteCollectionResponse
+	29, // 44: filer_pb.SeaweedFiler.Statistics:output_type -> filer_pb.StatisticsResponse
+	31, // 45: filer_pb.SeaweedFiler.GetFilerConfiguration:output_type -> filer_pb.GetFilerConfigurationResponse
+	33, // 46: filer_pb.SeaweedFiler.SubscribeMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	33, // 47: filer_pb.SeaweedFiler.SubscribeLocalMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	36, // 48: filer_pb.SeaweedFiler.KeepConnected:output_type -> filer_pb.KeepConnectedResponse
+	38, // 49: filer_pb.SeaweedFiler.LocateBroker:output_type -> filer_pb.LocateBrokerResponse
+	34, // [34:50] is the sub-list for method output_type
+	18, // [18:34] is the sub-list for method input_type
+	18, // [18:18] is the sub-list for extension type_name
+	18, // [18:18] is the sub-list for extension extendee
+	0,  // [0:18] is the sub-list for field type_name
+}
+
+func init() { file_filer_proto_init() }
+func file_filer_proto_init() {
+	if File_filer_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_filer_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupDirectoryEntryRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupDirectoryEntryResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListEntriesRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListEntriesResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Entry); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FullEntry); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*EventNotification); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FileChunk); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FileId); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FuseAttributes); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CreateEntryRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CreateEntryResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UpdateEntryRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UpdateEntryResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AppendToEntryRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AppendToEntryResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteEntryRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteEntryResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AtomicRenameEntryRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AtomicRenameEntryResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AssignVolumeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AssignVolumeResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupVolumeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Locations); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Location); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupVolumeResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteCollectionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteCollectionResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StatisticsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StatisticsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[30].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetFilerConfigurationRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[31].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetFilerConfigurationResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[32].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscribeMetadataRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[33].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscribeMetadataResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[34].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LogEntry); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*KeepConnectedRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*KeepConnectedResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LocateBrokerRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LocateBrokerResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LocateBrokerResponse_Resource); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_filer_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   42,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_filer_proto_goTypes,
+		DependencyIndexes: file_filer_proto_depIdxs,
+		MessageInfos:      file_filer_proto_msgTypes,
+	}.Build()
+	File_filer_proto = out.File
+	file_filer_proto_rawDesc = nil
+	file_filer_proto_goTypes = nil
+	file_filer_proto_depIdxs = nil
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ context.Context
-var _ grpc.ClientConn
+var _ grpc.ClientConnInterface
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion4
-
-// Client API for SeaweedFiler service
+const _ = grpc.SupportPackageIsVersion6
 
+// SeaweedFilerClient is the client API for SeaweedFiler service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type SeaweedFilerClient interface {
 	LookupDirectoryEntry(ctx context.Context, in *LookupDirectoryEntryRequest, opts ...grpc.CallOption) (*LookupDirectoryEntryResponse, error)
-	ListEntries(ctx context.Context, in *ListEntriesRequest, opts ...grpc.CallOption) (*ListEntriesResponse, error)
+	ListEntries(ctx context.Context, in *ListEntriesRequest, opts ...grpc.CallOption) (SeaweedFiler_ListEntriesClient, error)
 	CreateEntry(ctx context.Context, in *CreateEntryRequest, opts ...grpc.CallOption) (*CreateEntryResponse, error)
 	UpdateEntry(ctx context.Context, in *UpdateEntryRequest, opts ...grpc.CallOption) (*UpdateEntryResponse, error)
+	AppendToEntry(ctx context.Context, in *AppendToEntryRequest, opts ...grpc.CallOption) (*AppendToEntryResponse, error)
 	DeleteEntry(ctx context.Context, in *DeleteEntryRequest, opts ...grpc.CallOption) (*DeleteEntryResponse, error)
+	AtomicRenameEntry(ctx context.Context, in *AtomicRenameEntryRequest, opts ...grpc.CallOption) (*AtomicRenameEntryResponse, error)
 	AssignVolume(ctx context.Context, in *AssignVolumeRequest, opts ...grpc.CallOption) (*AssignVolumeResponse, error)
 	LookupVolume(ctx context.Context, in *LookupVolumeRequest, opts ...grpc.CallOption) (*LookupVolumeResponse, error)
 	DeleteCollection(ctx context.Context, in *DeleteCollectionRequest, opts ...grpc.CallOption) (*DeleteCollectionResponse, error)
 	Statistics(ctx context.Context, in *StatisticsRequest, opts ...grpc.CallOption) (*StatisticsResponse, error)
+	GetFilerConfiguration(ctx context.Context, in *GetFilerConfigurationRequest, opts ...grpc.CallOption) (*GetFilerConfigurationResponse, error)
+	SubscribeMetadata(ctx context.Context, in *SubscribeMetadataRequest, opts ...grpc.CallOption) (SeaweedFiler_SubscribeMetadataClient, error)
+	SubscribeLocalMetadata(ctx context.Context, in *SubscribeMetadataRequest, opts ...grpc.CallOption) (SeaweedFiler_SubscribeLocalMetadataClient, error)
+	KeepConnected(ctx context.Context, opts ...grpc.CallOption) (SeaweedFiler_KeepConnectedClient, error)
+	LocateBroker(ctx context.Context, in *LocateBrokerRequest, opts ...grpc.CallOption) (*LocateBrokerResponse, error)
 }
 
 type seaweedFilerClient struct {
-	cc *grpc.ClientConn
+	cc grpc.ClientConnInterface
 }
 
-func NewSeaweedFilerClient(cc *grpc.ClientConn) SeaweedFilerClient {
+func NewSeaweedFilerClient(cc grpc.ClientConnInterface) SeaweedFilerClient {
 	return &seaweedFilerClient{cc}
 }
 
 func (c *seaweedFilerClient) LookupDirectoryEntry(ctx context.Context, in *LookupDirectoryEntryRequest, opts ...grpc.CallOption) (*LookupDirectoryEntryResponse, error) {
 	out := new(LookupDirectoryEntryResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/LookupDirectoryEntry", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/LookupDirectoryEntry", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *seaweedFilerClient) ListEntries(ctx context.Context, in *ListEntriesRequest, opts ...grpc.CallOption) (*ListEntriesResponse, error) {
-	out := new(ListEntriesResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/ListEntries", in, out, c.cc, opts...)
+func (c *seaweedFilerClient) ListEntries(ctx context.Context, in *ListEntriesRequest, opts ...grpc.CallOption) (SeaweedFiler_ListEntriesClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_SeaweedFiler_serviceDesc.Streams[0], "/filer_pb.SeaweedFiler/ListEntries", opts...)
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	x := &seaweedFilerListEntriesClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type SeaweedFiler_ListEntriesClient interface {
+	Recv() (*ListEntriesResponse, error)
+	grpc.ClientStream
+}
+
+type seaweedFilerListEntriesClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedFilerListEntriesClient) Recv() (*ListEntriesResponse, error) {
+	m := new(ListEntriesResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
 }
 
 func (c *seaweedFilerClient) CreateEntry(ctx context.Context, in *CreateEntryRequest, opts ...grpc.CallOption) (*CreateEntryResponse, error) {
 	out := new(CreateEntryResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/CreateEntry", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/CreateEntry", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -879,7 +3689,16 @@ func (c *seaweedFilerClient) CreateEntry(ctx context.Context, in *CreateEntryReq
 
 func (c *seaweedFilerClient) UpdateEntry(ctx context.Context, in *UpdateEntryRequest, opts ...grpc.CallOption) (*UpdateEntryResponse, error) {
 	out := new(UpdateEntryResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/UpdateEntry", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/UpdateEntry", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedFilerClient) AppendToEntry(ctx context.Context, in *AppendToEntryRequest, opts ...grpc.CallOption) (*AppendToEntryResponse, error) {
+	out := new(AppendToEntryResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/AppendToEntry", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -888,7 +3707,16 @@ func (c *seaweedFilerClient) UpdateEntry(ctx context.Context, in *UpdateEntryReq
 
 func (c *seaweedFilerClient) DeleteEntry(ctx context.Context, in *DeleteEntryRequest, opts ...grpc.CallOption) (*DeleteEntryResponse, error) {
 	out := new(DeleteEntryResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/DeleteEntry", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/DeleteEntry", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedFilerClient) AtomicRenameEntry(ctx context.Context, in *AtomicRenameEntryRequest, opts ...grpc.CallOption) (*AtomicRenameEntryResponse, error) {
+	out := new(AtomicRenameEntryResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/AtomicRenameEntry", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -897,7 +3725,7 @@ func (c *seaweedFilerClient) DeleteEntry(ctx context.Context, in *DeleteEntryReq
 
 func (c *seaweedFilerClient) AssignVolume(ctx context.Context, in *AssignVolumeRequest, opts ...grpc.CallOption) (*AssignVolumeResponse, error) {
 	out := new(AssignVolumeResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/AssignVolume", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/AssignVolume", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -906,7 +3734,7 @@ func (c *seaweedFilerClient) AssignVolume(ctx context.Context, in *AssignVolumeR
 
 func (c *seaweedFilerClient) LookupVolume(ctx context.Context, in *LookupVolumeRequest, opts ...grpc.CallOption) (*LookupVolumeResponse, error) {
 	out := new(LookupVolumeResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/LookupVolume", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/LookupVolume", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -915,7 +3743,7 @@ func (c *seaweedFilerClient) LookupVolume(ctx context.Context, in *LookupVolumeR
 
 func (c *seaweedFilerClient) DeleteCollection(ctx context.Context, in *DeleteCollectionRequest, opts ...grpc.CallOption) (*DeleteCollectionResponse, error) {
 	out := new(DeleteCollectionResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/DeleteCollection", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/DeleteCollection", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -924,25 +3752,197 @@ func (c *seaweedFilerClient) DeleteCollection(ctx context.Context, in *DeleteCol
 
 func (c *seaweedFilerClient) Statistics(ctx context.Context, in *StatisticsRequest, opts ...grpc.CallOption) (*StatisticsResponse, error) {
 	out := new(StatisticsResponse)
-	err := grpc.Invoke(ctx, "/filer_pb.SeaweedFiler/Statistics", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/Statistics", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-// Server API for SeaweedFiler service
+func (c *seaweedFilerClient) GetFilerConfiguration(ctx context.Context, in *GetFilerConfigurationRequest, opts ...grpc.CallOption) (*GetFilerConfigurationResponse, error) {
+	out := new(GetFilerConfigurationResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/GetFilerConfiguration", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
 
+func (c *seaweedFilerClient) SubscribeMetadata(ctx context.Context, in *SubscribeMetadataRequest, opts ...grpc.CallOption) (SeaweedFiler_SubscribeMetadataClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_SeaweedFiler_serviceDesc.Streams[1], "/filer_pb.SeaweedFiler/SubscribeMetadata", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedFilerSubscribeMetadataClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type SeaweedFiler_SubscribeMetadataClient interface {
+	Recv() (*SubscribeMetadataResponse, error)
+	grpc.ClientStream
+}
+
+type seaweedFilerSubscribeMetadataClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedFilerSubscribeMetadataClient) Recv() (*SubscribeMetadataResponse, error) {
+	m := new(SubscribeMetadataResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *seaweedFilerClient) SubscribeLocalMetadata(ctx context.Context, in *SubscribeMetadataRequest, opts ...grpc.CallOption) (SeaweedFiler_SubscribeLocalMetadataClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_SeaweedFiler_serviceDesc.Streams[2], "/filer_pb.SeaweedFiler/SubscribeLocalMetadata", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedFilerSubscribeLocalMetadataClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type SeaweedFiler_SubscribeLocalMetadataClient interface {
+	Recv() (*SubscribeMetadataResponse, error)
+	grpc.ClientStream
+}
+
+type seaweedFilerSubscribeLocalMetadataClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedFilerSubscribeLocalMetadataClient) Recv() (*SubscribeMetadataResponse, error) {
+	m := new(SubscribeMetadataResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *seaweedFilerClient) KeepConnected(ctx context.Context, opts ...grpc.CallOption) (SeaweedFiler_KeepConnectedClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_SeaweedFiler_serviceDesc.Streams[3], "/filer_pb.SeaweedFiler/KeepConnected", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedFilerKeepConnectedClient{stream}
+	return x, nil
+}
+
+type SeaweedFiler_KeepConnectedClient interface {
+	Send(*KeepConnectedRequest) error
+	Recv() (*KeepConnectedResponse, error)
+	grpc.ClientStream
+}
+
+type seaweedFilerKeepConnectedClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedFilerKeepConnectedClient) Send(m *KeepConnectedRequest) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *seaweedFilerKeepConnectedClient) Recv() (*KeepConnectedResponse, error) {
+	m := new(KeepConnectedResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *seaweedFilerClient) LocateBroker(ctx context.Context, in *LocateBrokerRequest, opts ...grpc.CallOption) (*LocateBrokerResponse, error) {
+	out := new(LocateBrokerResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/LocateBroker", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// SeaweedFilerServer is the server API for SeaweedFiler service.
 type SeaweedFilerServer interface {
 	LookupDirectoryEntry(context.Context, *LookupDirectoryEntryRequest) (*LookupDirectoryEntryResponse, error)
-	ListEntries(context.Context, *ListEntriesRequest) (*ListEntriesResponse, error)
+	ListEntries(*ListEntriesRequest, SeaweedFiler_ListEntriesServer) error
 	CreateEntry(context.Context, *CreateEntryRequest) (*CreateEntryResponse, error)
 	UpdateEntry(context.Context, *UpdateEntryRequest) (*UpdateEntryResponse, error)
+	AppendToEntry(context.Context, *AppendToEntryRequest) (*AppendToEntryResponse, error)
 	DeleteEntry(context.Context, *DeleteEntryRequest) (*DeleteEntryResponse, error)
+	AtomicRenameEntry(context.Context, *AtomicRenameEntryRequest) (*AtomicRenameEntryResponse, error)
 	AssignVolume(context.Context, *AssignVolumeRequest) (*AssignVolumeResponse, error)
 	LookupVolume(context.Context, *LookupVolumeRequest) (*LookupVolumeResponse, error)
 	DeleteCollection(context.Context, *DeleteCollectionRequest) (*DeleteCollectionResponse, error)
 	Statistics(context.Context, *StatisticsRequest) (*StatisticsResponse, error)
+	GetFilerConfiguration(context.Context, *GetFilerConfigurationRequest) (*GetFilerConfigurationResponse, error)
+	SubscribeMetadata(*SubscribeMetadataRequest, SeaweedFiler_SubscribeMetadataServer) error
+	SubscribeLocalMetadata(*SubscribeMetadataRequest, SeaweedFiler_SubscribeLocalMetadataServer) error
+	KeepConnected(SeaweedFiler_KeepConnectedServer) error
+	LocateBroker(context.Context, *LocateBrokerRequest) (*LocateBrokerResponse, error)
+}
+
+// UnimplementedSeaweedFilerServer can be embedded to have forward compatible implementations.
+type UnimplementedSeaweedFilerServer struct {
+}
+
+func (*UnimplementedSeaweedFilerServer) LookupDirectoryEntry(context.Context, *LookupDirectoryEntryRequest) (*LookupDirectoryEntryResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method LookupDirectoryEntry not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) ListEntries(*ListEntriesRequest, SeaweedFiler_ListEntriesServer) error {
+	return status.Errorf(codes.Unimplemented, "method ListEntries not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) CreateEntry(context.Context, *CreateEntryRequest) (*CreateEntryResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method CreateEntry not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) UpdateEntry(context.Context, *UpdateEntryRequest) (*UpdateEntryResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method UpdateEntry not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) AppendToEntry(context.Context, *AppendToEntryRequest) (*AppendToEntryResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method AppendToEntry not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) DeleteEntry(context.Context, *DeleteEntryRequest) (*DeleteEntryResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DeleteEntry not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) AtomicRenameEntry(context.Context, *AtomicRenameEntryRequest) (*AtomicRenameEntryResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method AtomicRenameEntry not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) AssignVolume(context.Context, *AssignVolumeRequest) (*AssignVolumeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method AssignVolume not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) LookupVolume(context.Context, *LookupVolumeRequest) (*LookupVolumeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method LookupVolume not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) DeleteCollection(context.Context, *DeleteCollectionRequest) (*DeleteCollectionResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DeleteCollection not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) Statistics(context.Context, *StatisticsRequest) (*StatisticsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Statistics not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) GetFilerConfiguration(context.Context, *GetFilerConfigurationRequest) (*GetFilerConfigurationResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetFilerConfiguration not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) SubscribeMetadata(*SubscribeMetadataRequest, SeaweedFiler_SubscribeMetadataServer) error {
+	return status.Errorf(codes.Unimplemented, "method SubscribeMetadata not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) SubscribeLocalMetadata(*SubscribeMetadataRequest, SeaweedFiler_SubscribeLocalMetadataServer) error {
+	return status.Errorf(codes.Unimplemented, "method SubscribeLocalMetadata not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) KeepConnected(SeaweedFiler_KeepConnectedServer) error {
+	return status.Errorf(codes.Unimplemented, "method KeepConnected not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) LocateBroker(context.Context, *LocateBrokerRequest) (*LocateBrokerResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method LocateBroker not implemented")
 }
 
 func RegisterSeaweedFilerServer(s *grpc.Server, srv SeaweedFilerServer) {
@@ -967,22 +3967,25 @@ func _SeaweedFiler_LookupDirectoryEntry_Handler(srv interface{}, ctx context.Con
 	return interceptor(ctx, in, info, handler)
 }
 
-func _SeaweedFiler_ListEntries_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListEntriesRequest)
-	if err := dec(in); err != nil {
-		return nil, err
+func _SeaweedFiler_ListEntries_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(ListEntriesRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
 	}
-	if interceptor == nil {
-		return srv.(SeaweedFilerServer).ListEntries(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/filer_pb.SeaweedFiler/ListEntries",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(SeaweedFilerServer).ListEntries(ctx, req.(*ListEntriesRequest))
-	}
-	return interceptor(ctx, in, info, handler)
+	return srv.(SeaweedFilerServer).ListEntries(m, &seaweedFilerListEntriesServer{stream})
+}
+
+type SeaweedFiler_ListEntriesServer interface {
+	Send(*ListEntriesResponse) error
+	grpc.ServerStream
+}
+
+type seaweedFilerListEntriesServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedFilerListEntriesServer) Send(m *ListEntriesResponse) error {
+	return x.ServerStream.SendMsg(m)
 }
 
 func _SeaweedFiler_CreateEntry_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
@@ -1021,6 +4024,24 @@ func _SeaweedFiler_UpdateEntry_Handler(srv interface{}, ctx context.Context, dec
 	return interceptor(ctx, in, info, handler)
 }
 
+func _SeaweedFiler_AppendToEntry_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(AppendToEntryRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).AppendToEntry(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/AppendToEntry",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).AppendToEntry(ctx, req.(*AppendToEntryRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _SeaweedFiler_DeleteEntry_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(DeleteEntryRequest)
 	if err := dec(in); err != nil {
@@ -1039,6 +4060,24 @@ func _SeaweedFiler_DeleteEntry_Handler(srv interface{}, ctx context.Context, dec
 	return interceptor(ctx, in, info, handler)
 }
 
+func _SeaweedFiler_AtomicRenameEntry_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(AtomicRenameEntryRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).AtomicRenameEntry(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/AtomicRenameEntry",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).AtomicRenameEntry(ctx, req.(*AtomicRenameEntryRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _SeaweedFiler_AssignVolume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(AssignVolumeRequest)
 	if err := dec(in); err != nil {
@@ -1111,6 +4150,110 @@ func _SeaweedFiler_Statistics_Handler(srv interface{}, ctx context.Context, dec
 	return interceptor(ctx, in, info, handler)
 }
 
+func _SeaweedFiler_GetFilerConfiguration_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetFilerConfigurationRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).GetFilerConfiguration(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/GetFilerConfiguration",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).GetFilerConfiguration(ctx, req.(*GetFilerConfigurationRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedFiler_SubscribeMetadata_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(SubscribeMetadataRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(SeaweedFilerServer).SubscribeMetadata(m, &seaweedFilerSubscribeMetadataServer{stream})
+}
+
+type SeaweedFiler_SubscribeMetadataServer interface {
+	Send(*SubscribeMetadataResponse) error
+	grpc.ServerStream
+}
+
+type seaweedFilerSubscribeMetadataServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedFilerSubscribeMetadataServer) Send(m *SubscribeMetadataResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _SeaweedFiler_SubscribeLocalMetadata_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(SubscribeMetadataRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(SeaweedFilerServer).SubscribeLocalMetadata(m, &seaweedFilerSubscribeLocalMetadataServer{stream})
+}
+
+type SeaweedFiler_SubscribeLocalMetadataServer interface {
+	Send(*SubscribeMetadataResponse) error
+	grpc.ServerStream
+}
+
+type seaweedFilerSubscribeLocalMetadataServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedFilerSubscribeLocalMetadataServer) Send(m *SubscribeMetadataResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _SeaweedFiler_KeepConnected_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(SeaweedFilerServer).KeepConnected(&seaweedFilerKeepConnectedServer{stream})
+}
+
+type SeaweedFiler_KeepConnectedServer interface {
+	Send(*KeepConnectedResponse) error
+	Recv() (*KeepConnectedRequest, error)
+	grpc.ServerStream
+}
+
+type seaweedFilerKeepConnectedServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedFilerKeepConnectedServer) Send(m *KeepConnectedResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *seaweedFilerKeepConnectedServer) Recv() (*KeepConnectedRequest, error) {
+	m := new(KeepConnectedRequest)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func _SeaweedFiler_LocateBroker_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(LocateBrokerRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).LocateBroker(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/LocateBroker",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).LocateBroker(ctx, req.(*LocateBrokerRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "filer_pb.SeaweedFiler",
 	HandlerType: (*SeaweedFilerServer)(nil),
@@ -1120,10 +4263,6 @@ var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 			Handler:    _SeaweedFiler_LookupDirectoryEntry_Handler,
 		},
 		{
-			MethodName: "ListEntries",
-			Handler:    _SeaweedFiler_ListEntries_Handler,
-		},
-		{
 			MethodName: "CreateEntry",
 			Handler:    _SeaweedFiler_CreateEntry_Handler,
 		},
@@ -1132,10 +4271,18 @@ var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 			Handler:    _SeaweedFiler_UpdateEntry_Handler,
 		},
 		{
+			MethodName: "AppendToEntry",
+			Handler:    _SeaweedFiler_AppendToEntry_Handler,
+		},
+		{
 			MethodName: "DeleteEntry",
 			Handler:    _SeaweedFiler_DeleteEntry_Handler,
 		},
 		{
+			MethodName: "AtomicRenameEntry",
+			Handler:    _SeaweedFiler_AtomicRenameEntry_Handler,
+		},
+		{
 			MethodName: "AssignVolume",
 			Handler:    _SeaweedFiler_AssignVolume_Handler,
 		},
@@ -1151,94 +4298,37 @@ var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 			MethodName: "Statistics",
 			Handler:    _SeaweedFiler_Statistics_Handler,
 		},
+		{
+			MethodName: "GetFilerConfiguration",
+			Handler:    _SeaweedFiler_GetFilerConfiguration_Handler,
+		},
+		{
+			MethodName: "LocateBroker",
+			Handler:    _SeaweedFiler_LocateBroker_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "ListEntries",
+			Handler:       _SeaweedFiler_ListEntries_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "SubscribeMetadata",
+			Handler:       _SeaweedFiler_SubscribeMetadata_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "SubscribeLocalMetadata",
+			Handler:       _SeaweedFiler_SubscribeLocalMetadata_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "KeepConnected",
+			Handler:       _SeaweedFiler_KeepConnected_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
 	},
-	Streams:  []grpc.StreamDesc{},
 	Metadata: "filer.proto",
 }
-
-func init() { proto.RegisterFile("filer.proto", fileDescriptor0) }
-
-var fileDescriptor0 = []byte{
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-}
diff --git a/weed/pb/filer_pb/filer_client.go b/weed/pb/filer_pb/filer_client.go
new file mode 100644
index 000000000..535a3c247
--- /dev/null
+++ b/weed/pb/filer_pb/filer_client.go
@@ -0,0 +1,237 @@
+package filer_pb
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"os"
+	"time"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+var (
+	OS_UID = uint32(os.Getuid())
+	OS_GID = uint32(os.Getgid())
+)
+
+type FilerClient interface {
+	WithFilerClient(fn func(SeaweedFilerClient) error) error
+	AdjustedUrl(hostAndPort string) string
+}
+
+func GetEntry(filerClient FilerClient, fullFilePath util.FullPath) (entry *Entry, err error) {
+
+	dir, name := fullFilePath.DirAndName()
+
+	err = filerClient.WithFilerClient(func(client SeaweedFilerClient) error {
+
+		request := &LookupDirectoryEntryRequest{
+			Directory: dir,
+			Name:      name,
+		}
+
+		// glog.V(3).Infof("read %s request: %v", fullFilePath, request)
+		resp, err := LookupEntry(client, request)
+		if err != nil {
+			if err == ErrNotFound {
+				return nil
+			}
+			glog.V(3).Infof("read %s %v: %v", fullFilePath, resp, err)
+			return err
+		}
+
+		if resp.Entry == nil {
+			// glog.V(3).Infof("read %s entry: %v", fullFilePath, entry)
+			return nil
+		}
+
+		entry = resp.Entry
+		return nil
+	})
+
+	return
+}
+
+type EachEntryFunciton func(entry *Entry, isLast bool) error
+
+func ReadDirAllEntries(filerClient FilerClient, fullDirPath util.FullPath, prefix string, fn EachEntryFunciton) (err error) {
+
+	return doList(filerClient, fullDirPath, prefix, fn, "", false, math.MaxUint32)
+
+}
+
+func List(filerClient FilerClient, parentDirectoryPath, prefix string, fn EachEntryFunciton, startFrom string, inclusive bool, limit uint32) (err error) {
+
+	return doList(filerClient, util.FullPath(parentDirectoryPath), prefix, fn, startFrom, inclusive, limit)
+
+}
+
+func doList(filerClient FilerClient, fullDirPath util.FullPath, prefix string, fn EachEntryFunciton, startFrom string, inclusive bool, limit uint32) (err error) {
+
+	err = filerClient.WithFilerClient(func(client SeaweedFilerClient) error {
+
+		request := &ListEntriesRequest{
+			Directory:          string(fullDirPath),
+			Prefix:             prefix,
+			StartFromFileName:  startFrom,
+			Limit:              limit,
+			InclusiveStartFrom: inclusive,
+		}
+
+		glog.V(3).Infof("read directory: %v", request)
+		ctx, cancel := context.WithCancel(context.Background())
+		stream, err := client.ListEntries(ctx, request)
+		if err != nil {
+			return fmt.Errorf("list %s: %v", fullDirPath, err)
+		}
+		defer cancel()
+
+		var prevEntry *Entry
+		for {
+			resp, recvErr := stream.Recv()
+			if recvErr != nil {
+				if recvErr == io.EOF {
+					if prevEntry != nil {
+						if err := fn(prevEntry, true); err != nil {
+							return err
+						}
+					}
+					break
+				} else {
+					return recvErr
+				}
+			}
+			if prevEntry != nil {
+				if err := fn(prevEntry, false); err != nil {
+					return err
+				}
+			}
+			prevEntry = resp.Entry
+		}
+
+		return nil
+
+	})
+
+	return
+}
+
+func Exists(filerClient FilerClient, parentDirectoryPath string, entryName string, isDirectory bool) (exists bool, err error) {
+
+	err = filerClient.WithFilerClient(func(client SeaweedFilerClient) error {
+
+		request := &LookupDirectoryEntryRequest{
+			Directory: parentDirectoryPath,
+			Name:      entryName,
+		}
+
+		glog.V(4).Infof("exists entry %v/%v: %v", parentDirectoryPath, entryName, request)
+		resp, err := LookupEntry(client, request)
+		if err != nil {
+			if err == ErrNotFound {
+				exists = false
+				return nil
+			}
+			glog.V(0).Infof("exists entry %v: %v", request, err)
+			return fmt.Errorf("exists entry %s/%s: %v", parentDirectoryPath, entryName, err)
+		}
+
+		exists = resp.Entry.IsDirectory == isDirectory
+
+		return nil
+	})
+
+	return
+}
+
+func Mkdir(filerClient FilerClient, parentDirectoryPath string, dirName string, fn func(entry *Entry)) error {
+	return filerClient.WithFilerClient(func(client SeaweedFilerClient) error {
+
+		entry := &Entry{
+			Name:        dirName,
+			IsDirectory: true,
+			Attributes: &FuseAttributes{
+				Mtime:    time.Now().Unix(),
+				Crtime:   time.Now().Unix(),
+				FileMode: uint32(0777 | os.ModeDir),
+				Uid:      OS_UID,
+				Gid:      OS_GID,
+			},
+		}
+
+		if fn != nil {
+			fn(entry)
+		}
+
+		request := &CreateEntryRequest{
+			Directory: parentDirectoryPath,
+			Entry:     entry,
+		}
+
+		glog.V(1).Infof("mkdir: %v", request)
+		if err := CreateEntry(client, request); err != nil {
+			glog.V(0).Infof("mkdir %v: %v", request, err)
+			return fmt.Errorf("mkdir %s/%s: %v", parentDirectoryPath, dirName, err)
+		}
+
+		return nil
+	})
+}
+
+func MkFile(filerClient FilerClient, parentDirectoryPath string, fileName string, chunks []*FileChunk) error {
+	return filerClient.WithFilerClient(func(client SeaweedFilerClient) error {
+
+		entry := &Entry{
+			Name:        fileName,
+			IsDirectory: false,
+			Attributes: &FuseAttributes{
+				Mtime:    time.Now().Unix(),
+				Crtime:   time.Now().Unix(),
+				FileMode: uint32(0770),
+				Uid:      OS_UID,
+				Gid:      OS_GID,
+			},
+			Chunks: chunks,
+		}
+
+		request := &CreateEntryRequest{
+			Directory: parentDirectoryPath,
+			Entry:     entry,
+		}
+
+		glog.V(1).Infof("create file: %s/%s", parentDirectoryPath, fileName)
+		if err := CreateEntry(client, request); err != nil {
+			glog.V(0).Infof("create file %v:%v", request, err)
+			return fmt.Errorf("create file %s/%s: %v", parentDirectoryPath, fileName, err)
+		}
+
+		return nil
+	})
+}
+
+func Remove(filerClient FilerClient, parentDirectoryPath, name string, isDeleteData, isRecursive, ignoreRecursiveErr, isFromOtherCluster bool) error {
+	return filerClient.WithFilerClient(func(client SeaweedFilerClient) error {
+
+		if resp, err := client.DeleteEntry(context.Background(), &DeleteEntryRequest{
+			Directory:            parentDirectoryPath,
+			Name:                 name,
+			IsDeleteData:         isDeleteData,
+			IsRecursive:          isRecursive,
+			IgnoreRecursiveError: ignoreRecursiveErr,
+			IsFromOtherCluster:   isFromOtherCluster,
+		}); err != nil {
+			return err
+		} else {
+			if resp.Error != "" {
+				return errors.New(resp.Error)
+			}
+		}
+
+		return nil
+
+	})
+}
diff --git a/weed/pb/filer_pb/filer_client_bfs.go b/weed/pb/filer_pb/filer_client_bfs.go
new file mode 100644
index 000000000..4e5b65f12
--- /dev/null
+++ b/weed/pb/filer_pb/filer_client_bfs.go
@@ -0,0 +1,63 @@
+package filer_pb
+
+import (
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+func TraverseBfs(filerClient FilerClient, parentPath util.FullPath, fn func(parentPath util.FullPath, entry *Entry)) (err error) {
+
+	K := 5
+
+	var jobQueueWg sync.WaitGroup
+	queue := util.NewQueue()
+	jobQueueWg.Add(1)
+	queue.Enqueue(parentPath)
+	var isTerminating bool
+
+	for i := 0; i < K; i++ {
+		go func() {
+			for {
+				if isTerminating {
+					break
+				}
+				t := queue.Dequeue()
+				if t == nil {
+					time.Sleep(329 * time.Millisecond)
+					continue
+				}
+				dir := t.(util.FullPath)
+				processErr := processOneDirectory(filerClient, dir, queue, &jobQueueWg, fn)
+				if processErr != nil {
+					err = processErr
+				}
+				jobQueueWg.Done()
+			}
+		}()
+	}
+	jobQueueWg.Wait()
+	isTerminating = true
+	return
+}
+
+func processOneDirectory(filerClient FilerClient, parentPath util.FullPath, queue *util.Queue, jobQueueWg *sync.WaitGroup, fn func(parentPath util.FullPath, entry *Entry)) (err error) {
+
+	return ReadDirAllEntries(filerClient, parentPath, "", func(entry *Entry, isLast bool) error {
+
+		fn(parentPath, entry)
+
+		if entry.IsDirectory {
+			subDir := fmt.Sprintf("%s/%s", parentPath, entry.Name)
+			if parentPath == "/" {
+				subDir = "/" + entry.Name
+			}
+			jobQueueWg.Add(1)
+			queue.Enqueue(util.FullPath(subDir))
+		}
+		return nil
+	})
+
+}
diff --git a/weed/pb/filer_pb/filer_pb_helper.go b/weed/pb/filer_pb/filer_pb_helper.go
new file mode 100644
index 000000000..96ab2154f
--- /dev/null
+++ b/weed/pb/filer_pb/filer_pb_helper.go
@@ -0,0 +1,105 @@
+package filer_pb
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/storage/needle"
+)
+
+func toFileIdObject(fileIdStr string) (*FileId, error) {
+	t, err := needle.ParseFileIdFromString(fileIdStr)
+	if err != nil {
+		return nil, err
+	}
+	return &FileId{
+		VolumeId: uint32(t.VolumeId),
+		Cookie:   uint32(t.Cookie),
+		FileKey:  uint64(t.Key),
+	}, nil
+
+}
+
+func (fid *FileId) toFileIdString() string {
+	return needle.NewFileId(needle.VolumeId(fid.VolumeId), fid.FileKey, fid.Cookie).String()
+}
+
+func (c *FileChunk) GetFileIdString() string {
+	if c.FileId != "" {
+		return c.FileId
+	}
+	if c.Fid != nil {
+		c.FileId = c.Fid.toFileIdString()
+		return c.FileId
+	}
+	return ""
+}
+
+func BeforeEntrySerialization(chunks []*FileChunk) {
+
+	for _, chunk := range chunks {
+
+		if chunk.FileId != "" {
+			if fid, err := toFileIdObject(chunk.FileId); err == nil {
+				chunk.Fid = fid
+				chunk.FileId = ""
+			}
+		}
+
+		if chunk.SourceFileId != "" {
+			if fid, err := toFileIdObject(chunk.SourceFileId); err == nil {
+				chunk.SourceFid = fid
+				chunk.SourceFileId = ""
+			}
+		}
+
+	}
+}
+
+func AfterEntryDeserialization(chunks []*FileChunk) {
+
+	for _, chunk := range chunks {
+
+		if chunk.Fid != nil && chunk.FileId == "" {
+			chunk.FileId = chunk.Fid.toFileIdString()
+		}
+
+		if chunk.SourceFid != nil && chunk.SourceFileId == "" {
+			chunk.SourceFileId = chunk.SourceFid.toFileIdString()
+		}
+
+	}
+}
+
+func CreateEntry(client SeaweedFilerClient, request *CreateEntryRequest) error {
+	resp, err := client.CreateEntry(context.Background(), request)
+	if err != nil {
+		glog.V(1).Infof("create entry %s/%s %v: %v", request.Directory, request.Entry.Name, request.OExcl, err)
+		return fmt.Errorf("CreateEntry: %v", err)
+	}
+	if resp.Error != "" {
+		glog.V(1).Infof("create entry %s/%s %v: %v", request.Directory, request.Entry.Name, request.OExcl, err)
+		return fmt.Errorf("CreateEntry : %v", resp.Error)
+	}
+	return nil
+}
+
+func LookupEntry(client SeaweedFilerClient, request *LookupDirectoryEntryRequest) (*LookupDirectoryEntryResponse, error) {
+	resp, err := client.LookupDirectoryEntry(context.Background(), request)
+	if err != nil {
+		if err == ErrNotFound || strings.Contains(err.Error(), ErrNotFound.Error()) {
+			return nil, ErrNotFound
+		}
+		glog.V(3).Infof("read %s/%v: %v", request.Directory, request.Name, err)
+		return nil, fmt.Errorf("LookupEntry1: %v", err)
+	}
+	if resp.Entry == nil {
+		return nil, ErrNotFound
+	}
+	return resp, nil
+}
+
+var ErrNotFound = errors.New("filer: no entry is found in filer store")
diff --git a/weed/pb/filer_pb/filer_pb_helper_test.go b/weed/pb/filer_pb/filer_pb_helper_test.go
new file mode 100644
index 000000000..d4468c011
--- /dev/null
+++ b/weed/pb/filer_pb/filer_pb_helper_test.go
@@ -0,0 +1,17 @@
+package filer_pb
+
+import (
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+)
+
+func TestFileIdSize(t *testing.T) {
+	fileIdStr := "11745,0293434534cbb9892b"
+
+	fid, _ := toFileIdObject(fileIdStr)
+	bytes, _ := proto.Marshal(fid)
+
+	println(len(fileIdStr))
+	println(len(bytes))
+}
diff --git a/weed/pb/grpc_client_server.go b/weed/pb/grpc_client_server.go
new file mode 100644
index 000000000..ce706e282
--- /dev/null
+++ b/weed/pb/grpc_client_server.go
@@ -0,0 +1,197 @@
+package pb
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/keepalive"
+
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
+)
+
+const (
+	Max_Message_Size = 1 << 30 // 1 GB
+)
+
+var (
+	// cache grpc connections
+	grpcClients     = make(map[string]*grpc.ClientConn)
+	grpcClientsLock sync.Mutex
+)
+
+func init() {
+	http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = 1024
+}
+
+func NewGrpcServer(opts ...grpc.ServerOption) *grpc.Server {
+	var options []grpc.ServerOption
+	options = append(options,
+		grpc.KeepaliveParams(keepalive.ServerParameters{
+			Time:    10 * time.Second, // wait time before ping if no activity
+			Timeout: 20 * time.Second, // ping timeout
+		}),
+		grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
+			MinTime:             60 * time.Second, // min time a client should wait before sending a ping
+			PermitWithoutStream: false,
+		}),
+		grpc.MaxRecvMsgSize(Max_Message_Size),
+		grpc.MaxSendMsgSize(Max_Message_Size),
+	)
+	for _, opt := range opts {
+		if opt != nil {
+			options = append(options, opt)
+		}
+	}
+	return grpc.NewServer(options...)
+}
+
+func GrpcDial(ctx context.Context, address string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
+	// opts = append(opts, grpc.WithBlock())
+	// opts = append(opts, grpc.WithTimeout(time.Duration(5*time.Second)))
+	var options []grpc.DialOption
+	options = append(options,
+		// grpc.WithInsecure(),
+		grpc.WithDefaultCallOptions(
+			grpc.MaxCallSendMsgSize(Max_Message_Size),
+			grpc.MaxCallRecvMsgSize(Max_Message_Size),
+		),
+		grpc.WithKeepaliveParams(keepalive.ClientParameters{
+			Time:                30 * time.Second, // client ping server if no activity for this long
+			Timeout:             20 * time.Second,
+			PermitWithoutStream: false,
+		}))
+	for _, opt := range opts {
+		if opt != nil {
+			options = append(options, opt)
+		}
+	}
+	return grpc.DialContext(ctx, address, options...)
+}
+
+func getOrCreateConnection(address string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
+
+	grpcClientsLock.Lock()
+	defer grpcClientsLock.Unlock()
+
+	existingConnection, found := grpcClients[address]
+	if found {
+		return existingConnection, nil
+	}
+
+	grpcConnection, err := GrpcDial(context.Background(), address, opts...)
+	if err != nil {
+		return nil, fmt.Errorf("fail to dial %s: %v", address, err)
+	}
+
+	grpcClients[address] = grpcConnection
+
+	return grpcConnection, nil
+}
+
+func WithCachedGrpcClient(fn func(*grpc.ClientConn) error, address string, opts ...grpc.DialOption) error {
+
+	grpcConnection, err := getOrCreateConnection(address, opts...)
+	if err != nil {
+		return fmt.Errorf("getOrCreateConnection %s: %v", address, err)
+	}
+	return fn(grpcConnection)
+}
+
+func ParseServerToGrpcAddress(server string) (serverGrpcAddress string, err error) {
+	colonIndex := strings.LastIndex(server, ":")
+	if colonIndex < 0 {
+		return "", fmt.Errorf("server should have hostname:port format: %v", server)
+	}
+
+	port, parseErr := strconv.ParseUint(server[colonIndex+1:], 10, 64)
+	if parseErr != nil {
+		return "", fmt.Errorf("server port parse error: %v", parseErr)
+	}
+
+	grpcPort := int(port) + 10000
+
+	return fmt.Sprintf("%s:%d", server[:colonIndex], grpcPort), nil
+}
+
+func ServerToGrpcAddress(server string) (serverGrpcAddress string) {
+	hostnameAndPort := strings.Split(server, ":")
+	if len(hostnameAndPort) != 2 {
+		return fmt.Sprintf("unexpected server address: %s", server)
+	}
+
+	port, parseErr := strconv.ParseUint(hostnameAndPort[1], 10, 64)
+	if parseErr != nil {
+		return fmt.Sprintf("failed to parse port for %s:%s", hostnameAndPort[0], hostnameAndPort[1])
+	}
+
+	grpcPort := int(port) + 10000
+
+	return fmt.Sprintf("%s:%d", hostnameAndPort[0], grpcPort)
+}
+
+func WithMasterClient(master string, grpcDialOption grpc.DialOption, fn func(client master_pb.SeaweedClient) error) error {
+
+	masterGrpcAddress, parseErr := ParseServerToGrpcAddress(master)
+	if parseErr != nil {
+		return fmt.Errorf("failed to parse master grpc %v: %v", master, parseErr)
+	}
+
+	return WithCachedGrpcClient(func(grpcConnection *grpc.ClientConn) error {
+		client := master_pb.NewSeaweedClient(grpcConnection)
+		return fn(client)
+	}, masterGrpcAddress, grpcDialOption)
+
+}
+
+func WithBrokerGrpcClient(brokerGrpcAddress string, grpcDialOption grpc.DialOption, fn func(client messaging_pb.SeaweedMessagingClient) error) error {
+
+	return WithCachedGrpcClient(func(grpcConnection *grpc.ClientConn) error {
+		client := messaging_pb.NewSeaweedMessagingClient(grpcConnection)
+		return fn(client)
+	}, brokerGrpcAddress, grpcDialOption)
+
+}
+
+func WithFilerClient(filer string, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) error {
+
+	filerGrpcAddress, parseErr := ParseServerToGrpcAddress(filer)
+	if parseErr != nil {
+		return fmt.Errorf("failed to parse filer grpc %v: %v", filer, parseErr)
+	}
+
+	return WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, fn)
+
+}
+
+func WithGrpcFilerClient(filerGrpcAddress string, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) error {
+
+	return WithCachedGrpcClient(func(grpcConnection *grpc.ClientConn) error {
+		client := filer_pb.NewSeaweedFilerClient(grpcConnection)
+		return fn(client)
+	}, filerGrpcAddress, grpcDialOption)
+
+}
+
+func ParseFilerGrpcAddress(filer string) (filerGrpcAddress string, err error) {
+	hostnameAndPort := strings.Split(filer, ":")
+	if len(hostnameAndPort) != 2 {
+		return "", fmt.Errorf("filer should have hostname:port format: %v", hostnameAndPort)
+	}
+
+	filerPort, parseErr := strconv.ParseUint(hostnameAndPort[1], 10, 64)
+	if parseErr != nil {
+		return "", fmt.Errorf("filer port parse error: %v", parseErr)
+	}
+
+	filerGrpcPort := int(filerPort) + 10000
+
+	return fmt.Sprintf("%s:%d", hostnameAndPort[0], filerGrpcPort), nil
+}
diff --git a/weed/pb/iam.proto b/weed/pb/iam.proto
new file mode 100644
index 000000000..558bd2b70
--- /dev/null
+++ b/weed/pb/iam.proto
@@ -0,0 +1,51 @@
+syntax = "proto3";
+
+package iam_pb;
+
+option go_package = "github.com/chrislusf/seaweedfs/weed/pb/iam_pb";
+option java_package = "seaweedfs.client";
+option java_outer_classname = "IamProto";
+
+//////////////////////////////////////////////////
+
+service SeaweedIdentityAccessManagement {
+
+}
+
+//////////////////////////////////////////////////
+
+message S3ApiConfiguration {
+    repeated Identity identities = 1;
+}
+
+message Identity {
+    string name = 1;
+    repeated Credential credentials = 2;
+    repeated string actions = 3;
+}
+
+message Credential {
+    string access_key = 1;
+    string secret_key = 2;
+    // uint64 expiration = 3;
+    // bool is_disabled = 4;
+}
+
+/*
+message Policy {
+    repeated Statement statements = 1;
+}
+
+message Statement {
+    repeated Action action = 1;
+    repeated Resource resource = 2;
+}
+
+message Action {
+    string action = 1;
+}
+message Resource {
+    string bucket = 1;
+    // string path = 2;
+}
+*/
\ No newline at end of file
diff --git a/weed/pb/iam_pb/iam.pb.go b/weed/pb/iam_pb/iam.pb.go
new file mode 100644
index 000000000..93bc854cc
--- /dev/null
+++ b/weed/pb/iam_pb/iam.pb.go
@@ -0,0 +1,356 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.24.0
+// 	protoc        v3.12.3
+// source: iam.proto
+
+package iam_pb
+
+import (
+	context "context"
+	proto "github.com/golang/protobuf/proto"
+	grpc "google.golang.org/grpc"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
+type S3ApiConfiguration struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Identities []*Identity `protobuf:"bytes,1,rep,name=identities,proto3" json:"identities,omitempty"`
+}
+
+func (x *S3ApiConfiguration) Reset() {
+	*x = S3ApiConfiguration{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_iam_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *S3ApiConfiguration) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*S3ApiConfiguration) ProtoMessage() {}
+
+func (x *S3ApiConfiguration) ProtoReflect() protoreflect.Message {
+	mi := &file_iam_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use S3ApiConfiguration.ProtoReflect.Descriptor instead.
+func (*S3ApiConfiguration) Descriptor() ([]byte, []int) {
+	return file_iam_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *S3ApiConfiguration) GetIdentities() []*Identity {
+	if x != nil {
+		return x.Identities
+	}
+	return nil
+}
+
+type Identity struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name        string        `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	Credentials []*Credential `protobuf:"bytes,2,rep,name=credentials,proto3" json:"credentials,omitempty"`
+	Actions     []string      `protobuf:"bytes,3,rep,name=actions,proto3" json:"actions,omitempty"`
+}
+
+func (x *Identity) Reset() {
+	*x = Identity{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_iam_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Identity) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Identity) ProtoMessage() {}
+
+func (x *Identity) ProtoReflect() protoreflect.Message {
+	mi := &file_iam_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Identity.ProtoReflect.Descriptor instead.
+func (*Identity) Descriptor() ([]byte, []int) {
+	return file_iam_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Identity) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *Identity) GetCredentials() []*Credential {
+	if x != nil {
+		return x.Credentials
+	}
+	return nil
+}
+
+func (x *Identity) GetActions() []string {
+	if x != nil {
+		return x.Actions
+	}
+	return nil
+}
+
+type Credential struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	AccessKey string `protobuf:"bytes,1,opt,name=access_key,json=accessKey,proto3" json:"access_key,omitempty"`
+	SecretKey string `protobuf:"bytes,2,opt,name=secret_key,json=secretKey,proto3" json:"secret_key,omitempty"`
+}
+
+func (x *Credential) Reset() {
+	*x = Credential{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_iam_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Credential) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Credential) ProtoMessage() {}
+
+func (x *Credential) ProtoReflect() protoreflect.Message {
+	mi := &file_iam_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Credential.ProtoReflect.Descriptor instead.
+func (*Credential) Descriptor() ([]byte, []int) {
+	return file_iam_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *Credential) GetAccessKey() string {
+	if x != nil {
+		return x.AccessKey
+	}
+	return ""
+}
+
+func (x *Credential) GetSecretKey() string {
+	if x != nil {
+		return x.SecretKey
+	}
+	return ""
+}
+
+var File_iam_proto protoreflect.FileDescriptor
+
+var file_iam_proto_rawDesc = []byte{
+	0x0a, 0x09, 0x69, 0x61, 0x6d, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x06, 0x69, 0x61, 0x6d,
+	0x5f, 0x70, 0x62, 0x22, 0x46, 0x0a, 0x12, 0x53, 0x33, 0x41, 0x70, 0x69, 0x43, 0x6f, 0x6e, 0x66,
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+	0x32, 0x12, 0x2e, 0x69, 0x61, 0x6d, 0x5f, 0x70, 0x62, 0x2e, 0x43, 0x72, 0x65, 0x64, 0x65, 0x6e,
+	0x74, 0x69, 0x61, 0x6c, 0x52, 0x0b, 0x63, 0x72, 0x65, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x61, 0x6c,
+	0x73, 0x12, 0x18, 0x0a, 0x07, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x18, 0x03, 0x20, 0x03,
+	0x28, 0x09, 0x52, 0x07, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x22, 0x4a, 0x0a, 0x0a, 0x43,
+	0x72, 0x65, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x61, 0x6c, 0x12, 0x1d, 0x0a, 0x0a, 0x61, 0x63, 0x63,
+	0x65, 0x73, 0x73, 0x5f, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x61,
+	0x63, 0x63, 0x65, 0x73, 0x73, 0x4b, 0x65, 0x79, 0x12, 0x1d, 0x0a, 0x0a, 0x73, 0x65, 0x63, 0x72,
+	0x65, 0x74, 0x5f, 0x6b, 0x65, 0x79, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x73, 0x65,
+	0x63, 0x72, 0x65, 0x74, 0x4b, 0x65, 0x79, 0x32, 0x21, 0x0a, 0x1f, 0x53, 0x65, 0x61, 0x77, 0x65,
+	0x65, 0x64, 0x49, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x74, 0x79, 0x41, 0x63, 0x63, 0x65, 0x73, 0x73,
+	0x4d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x42, 0x4b, 0x0a, 0x10, 0x73, 0x65,
+	0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2e, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x42, 0x08,
+	0x49, 0x61, 0x6d, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x5a, 0x2d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62,
+	0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73,
+	0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62,
+	0x2f, 0x69, 0x61, 0x6d, 0x5f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_iam_proto_rawDescOnce sync.Once
+	file_iam_proto_rawDescData = file_iam_proto_rawDesc
+)
+
+func file_iam_proto_rawDescGZIP() []byte {
+	file_iam_proto_rawDescOnce.Do(func() {
+		file_iam_proto_rawDescData = protoimpl.X.CompressGZIP(file_iam_proto_rawDescData)
+	})
+	return file_iam_proto_rawDescData
+}
+
+var file_iam_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_iam_proto_goTypes = []interface{}{
+	(*S3ApiConfiguration)(nil), // 0: iam_pb.S3ApiConfiguration
+	(*Identity)(nil),           // 1: iam_pb.Identity
+	(*Credential)(nil),         // 2: iam_pb.Credential
+}
+var file_iam_proto_depIdxs = []int32{
+	1, // 0: iam_pb.S3ApiConfiguration.identities:type_name -> iam_pb.Identity
+	2, // 1: iam_pb.Identity.credentials:type_name -> iam_pb.Credential
+	2, // [2:2] is the sub-list for method output_type
+	2, // [2:2] is the sub-list for method input_type
+	2, // [2:2] is the sub-list for extension type_name
+	2, // [2:2] is the sub-list for extension extendee
+	0, // [0:2] is the sub-list for field type_name
+}
+
+func init() { file_iam_proto_init() }
+func file_iam_proto_init() {
+	if File_iam_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_iam_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*S3ApiConfiguration); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_iam_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Identity); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_iam_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Credential); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_iam_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   3,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_iam_proto_goTypes,
+		DependencyIndexes: file_iam_proto_depIdxs,
+		MessageInfos:      file_iam_proto_msgTypes,
+	}.Build()
+	File_iam_proto = out.File
+	file_iam_proto_rawDesc = nil
+	file_iam_proto_goTypes = nil
+	file_iam_proto_depIdxs = nil
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConnInterface
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion6
+
+// SeaweedIdentityAccessManagementClient is the client API for SeaweedIdentityAccessManagement service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type SeaweedIdentityAccessManagementClient interface {
+}
+
+type seaweedIdentityAccessManagementClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewSeaweedIdentityAccessManagementClient(cc grpc.ClientConnInterface) SeaweedIdentityAccessManagementClient {
+	return &seaweedIdentityAccessManagementClient{cc}
+}
+
+// SeaweedIdentityAccessManagementServer is the server API for SeaweedIdentityAccessManagement service.
+type SeaweedIdentityAccessManagementServer interface {
+}
+
+// UnimplementedSeaweedIdentityAccessManagementServer can be embedded to have forward compatible implementations.
+type UnimplementedSeaweedIdentityAccessManagementServer struct {
+}
+
+func RegisterSeaweedIdentityAccessManagementServer(s *grpc.Server, srv SeaweedIdentityAccessManagementServer) {
+	s.RegisterService(&_SeaweedIdentityAccessManagement_serviceDesc, srv)
+}
+
+var _SeaweedIdentityAccessManagement_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "iam_pb.SeaweedIdentityAccessManagement",
+	HandlerType: (*SeaweedIdentityAccessManagementServer)(nil),
+	Methods:     []grpc.MethodDesc{},
+	Streams:     []grpc.StreamDesc{},
+	Metadata:    "iam.proto",
+}
diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index 544160c06..4a612b8bc 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -2,12 +2,14 @@ syntax = "proto3";
 
 package master_pb;
 
+option go_package = "github.com/chrislusf/seaweedfs/weed/pb/master_pb";
+
 //////////////////////////////////////////////////
 
 service Seaweed {
     rpc SendHeartbeat (stream Heartbeat) returns (stream HeartbeatResponse) {
     }
-    rpc KeepConnected (stream ClientListenRequest) returns (stream VolumeLocation) {
+    rpc KeepConnected (stream KeepConnectedRequest) returns (stream VolumeLocation) {
     }
     rpc LookupVolume (LookupVolumeRequest) returns (LookupVolumeResponse) {
     }
@@ -15,6 +17,23 @@ service Seaweed {
     }
     rpc Statistics (StatisticsRequest) returns (StatisticsResponse) {
     }
+    rpc CollectionList (CollectionListRequest) returns (CollectionListResponse) {
+    }
+    rpc CollectionDelete (CollectionDeleteRequest) returns (CollectionDeleteResponse) {
+    }
+    rpc VolumeList (VolumeListRequest) returns (VolumeListResponse) {
+    }
+    rpc LookupEcVolume (LookupEcVolumeRequest) returns (LookupEcVolumeResponse) {
+    }
+    rpc GetMasterConfiguration (GetMasterConfigurationRequest) returns (GetMasterConfigurationResponse) {
+    }
+    rpc ListMasterClients (ListMasterClientsRequest) returns (ListMasterClientsResponse) {
+    }
+    rpc LeaseAdminToken (LeaseAdminTokenRequest) returns (LeaseAdminTokenResponse) {
+    }
+    rpc ReleaseAdminToken (ReleaseAdminTokenRequest) returns (ReleaseAdminTokenResponse) {
+    }
+
 }
 
 //////////////////////////////////////////////////
@@ -29,15 +48,26 @@ message Heartbeat {
     string rack = 7;
     uint32 admin_port = 8;
     repeated VolumeInformationMessage volumes = 9;
-    // delta volume ids
-    repeated uint32 new_vids = 10;
-    repeated uint32 deleted_vids = 11;
+    // delta volumes
+    repeated VolumeShortInformationMessage new_volumes = 10;
+    repeated VolumeShortInformationMessage deleted_volumes = 11;
+    bool has_no_volumes = 12;
+
+    // erasure coding
+    repeated VolumeEcShardInformationMessage ec_shards = 16;
+    // delta erasure coding shards
+    repeated VolumeEcShardInformationMessage new_ec_shards = 17;
+    repeated VolumeEcShardInformationMessage deleted_ec_shards = 18;
+    bool has_no_ec_shards = 19;
+
 }
 
 message HeartbeatResponse {
-    uint64 volumeSizeLimit = 1;
-    string secretKey = 2;
-    string leader = 3;
+    uint64 volume_size_limit = 1;
+    string leader = 2;
+    string metrics_address = 3;
+    uint32 metrics_interval_seconds = 4;
+    repeated StorageBackend storage_backends = 5;
 }
 
 message VolumeInformationMessage {
@@ -51,6 +81,30 @@ message VolumeInformationMessage {
     uint32 replica_placement = 8;
     uint32 version = 9;
     uint32 ttl = 10;
+    uint32 compact_revision = 11;
+    int64 modified_at_second = 12;
+    string remote_storage_name = 13;
+    string remote_storage_key = 14;
+}
+
+message VolumeShortInformationMessage {
+    uint32 id = 1;
+    string collection = 3;
+    uint32 replica_placement = 8;
+    uint32 version = 9;
+    uint32 ttl = 10;
+}
+
+message VolumeEcShardInformationMessage {
+    uint32 id = 1;
+    string collection = 2;
+    uint32 ec_index_bits = 3;
+}
+
+message StorageBackend {
+    string type = 1;
+    string id = 2;
+    map<string, string> properties = 3;
 }
 
 message Empty {
@@ -65,8 +119,9 @@ message SuperBlockExtra {
     ErasureCoding erasure_coding = 1;
 }
 
-message ClientListenRequest {
+message KeepConnectedRequest {
     string name = 1;
+    uint32 grpc_port = 2;
 }
 
 message VolumeLocation {
@@ -74,6 +129,7 @@ message VolumeLocation {
     string public_url = 2;
     repeated uint32 new_vids = 3;
     repeated uint32 deleted_vids = 4;
+    string leader = 5; // optional when leader is not itself
 }
 
 message LookupVolumeRequest {
@@ -102,6 +158,8 @@ message AssignRequest {
     string data_center = 5;
     string rack = 6;
     string data_node = 7;
+    uint32 memory_map_max_size_mb = 8;
+    uint32 Writable_volume_count = 9;
 }
 message AssignResponse {
     string fid = 1;
@@ -109,6 +167,7 @@ message AssignResponse {
     string public_url = 3;
     uint64 count = 4;
     string error = 5;
+    string auth = 6;
 }
 
 message StatisticsRequest {
@@ -124,3 +183,119 @@ message StatisticsResponse {
     uint64 used_size = 5;
     uint64 file_count = 6;
 }
+
+//
+// collection related
+//
+
+message StorageType {
+    string replication = 1;
+    string ttl = 2;
+}
+message Collection {
+    string name = 1;
+}
+message CollectionListRequest {
+    bool include_normal_volumes = 1;
+    bool include_ec_volumes = 2;
+}
+message CollectionListResponse {
+    repeated Collection collections = 1;
+}
+
+message CollectionDeleteRequest {
+    string name = 1;
+}
+message CollectionDeleteResponse {
+}
+
+//
+// volume related
+//
+message DataNodeInfo {
+    string id = 1;
+    uint64 volume_count = 2;
+    uint64 max_volume_count = 3;
+    uint64 free_volume_count = 4;
+    uint64 active_volume_count = 5;
+    repeated VolumeInformationMessage volume_infos = 6;
+    repeated VolumeEcShardInformationMessage ec_shard_infos = 7;
+    uint64 remote_volume_count = 8;
+}
+message RackInfo {
+    string id = 1;
+    uint64 volume_count = 2;
+    uint64 max_volume_count = 3;
+    uint64 free_volume_count = 4;
+    uint64 active_volume_count = 5;
+    repeated DataNodeInfo data_node_infos = 6;
+    uint64 remote_volume_count = 7;
+}
+message DataCenterInfo {
+    string id = 1;
+    uint64 volume_count = 2;
+    uint64 max_volume_count = 3;
+    uint64 free_volume_count = 4;
+    uint64 active_volume_count = 5;
+    repeated RackInfo rack_infos = 6;
+    uint64 remote_volume_count = 7;
+}
+message TopologyInfo {
+    string id = 1;
+    uint64 volume_count = 2;
+    uint64 max_volume_count = 3;
+    uint64 free_volume_count = 4;
+    uint64 active_volume_count = 5;
+    repeated DataCenterInfo data_center_infos = 6;
+    uint64 remote_volume_count = 7;
+}
+message VolumeListRequest {
+}
+message VolumeListResponse {
+    TopologyInfo topology_info = 1;
+    uint64 volume_size_limit_mb = 2;
+}
+
+message LookupEcVolumeRequest {
+    uint32 volume_id = 1;
+}
+message LookupEcVolumeResponse {
+    uint32 volume_id = 1;
+    message EcShardIdLocation {
+        uint32 shard_id = 1;
+        repeated Location locations = 2;
+    }
+    repeated EcShardIdLocation shard_id_locations = 2;
+}
+
+message GetMasterConfigurationRequest {
+}
+message GetMasterConfigurationResponse {
+    string metrics_address = 1;
+    uint32 metrics_interval_seconds = 2;
+}
+
+message ListMasterClientsRequest {
+    string client_type = 1;
+}
+message ListMasterClientsResponse {
+    repeated string grpc_addresses = 1;
+}
+
+message LeaseAdminTokenRequest {
+    int64 previous_token = 1;
+    int64 previous_lock_time = 2;
+    string lock_name = 3;
+}
+message LeaseAdminTokenResponse {
+    int64 token = 1;
+    int64 lock_ts_ns = 2;
+}
+
+message ReleaseAdminTokenRequest {
+    int64 previous_token = 1;
+    int64 previous_lock_time = 2;
+    string lock_name = 3;
+}
+message ReleaseAdminTokenResponse {
+}
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 894f08471..0d9782439 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -1,727 +1,3993 @@
-// Code generated by protoc-gen-go.
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.24.0
+// 	protoc        v3.12.3
 // source: master.proto
-// DO NOT EDIT!
-
-/*
-Package master_pb is a generated protocol buffer package.
-
-It is generated from these files:
-	master.proto
-
-It has these top-level messages:
-	Heartbeat
-	HeartbeatResponse
-	VolumeInformationMessage
-	Empty
-	SuperBlockExtra
-	ClientListenRequest
-	VolumeLocation
-	LookupVolumeRequest
-	LookupVolumeResponse
-	Location
-	AssignRequest
-	AssignResponse
-	StatisticsRequest
-	StatisticsResponse
-*/
-package master_pb
 
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
+package master_pb
 
 import (
-	context "golang.org/x/net/context"
+	context "context"
+	proto "github.com/golang/protobuf/proto"
 	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
 
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
 
 type Heartbeat struct {
-	Ip             string                      `protobuf:"bytes,1,opt,name=ip" json:"ip,omitempty"`
-	Port           uint32                      `protobuf:"varint,2,opt,name=port" json:"port,omitempty"`
-	PublicUrl      string                      `protobuf:"bytes,3,opt,name=public_url,json=publicUrl" json:"public_url,omitempty"`
-	MaxVolumeCount uint32                      `protobuf:"varint,4,opt,name=max_volume_count,json=maxVolumeCount" json:"max_volume_count,omitempty"`
-	MaxFileKey     uint64                      `protobuf:"varint,5,opt,name=max_file_key,json=maxFileKey" json:"max_file_key,omitempty"`
-	DataCenter     string                      `protobuf:"bytes,6,opt,name=data_center,json=dataCenter" json:"data_center,omitempty"`
-	Rack           string                      `protobuf:"bytes,7,opt,name=rack" json:"rack,omitempty"`
-	AdminPort      uint32                      `protobuf:"varint,8,opt,name=admin_port,json=adminPort" json:"admin_port,omitempty"`
-	Volumes        []*VolumeInformationMessage `protobuf:"bytes,9,rep,name=volumes" json:"volumes,omitempty"`
-	// delta volume ids
-	NewVids     []uint32 `protobuf:"varint,10,rep,packed,name=new_vids,json=newVids" json:"new_vids,omitempty"`
-	DeletedVids []uint32 `protobuf:"varint,11,rep,packed,name=deleted_vids,json=deletedVids" json:"deleted_vids,omitempty"`
-}
-
-func (m *Heartbeat) Reset()                    { *m = Heartbeat{} }
-func (m *Heartbeat) String() string            { return proto.CompactTextString(m) }
-func (*Heartbeat) ProtoMessage()               {}
-func (*Heartbeat) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
-
-func (m *Heartbeat) GetIp() string {
-	if m != nil {
-		return m.Ip
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Ip             string                      `protobuf:"bytes,1,opt,name=ip,proto3" json:"ip,omitempty"`
+	Port           uint32                      `protobuf:"varint,2,opt,name=port,proto3" json:"port,omitempty"`
+	PublicUrl      string                      `protobuf:"bytes,3,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
+	MaxVolumeCount uint32                      `protobuf:"varint,4,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
+	MaxFileKey     uint64                      `protobuf:"varint,5,opt,name=max_file_key,json=maxFileKey,proto3" json:"max_file_key,omitempty"`
+	DataCenter     string                      `protobuf:"bytes,6,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
+	Rack           string                      `protobuf:"bytes,7,opt,name=rack,proto3" json:"rack,omitempty"`
+	AdminPort      uint32                      `protobuf:"varint,8,opt,name=admin_port,json=adminPort,proto3" json:"admin_port,omitempty"`
+	Volumes        []*VolumeInformationMessage `protobuf:"bytes,9,rep,name=volumes,proto3" json:"volumes,omitempty"`
+	// delta volumes
+	NewVolumes     []*VolumeShortInformationMessage `protobuf:"bytes,10,rep,name=new_volumes,json=newVolumes,proto3" json:"new_volumes,omitempty"`
+	DeletedVolumes []*VolumeShortInformationMessage `protobuf:"bytes,11,rep,name=deleted_volumes,json=deletedVolumes,proto3" json:"deleted_volumes,omitempty"`
+	HasNoVolumes   bool                             `protobuf:"varint,12,opt,name=has_no_volumes,json=hasNoVolumes,proto3" json:"has_no_volumes,omitempty"`
+	// erasure coding
+	EcShards []*VolumeEcShardInformationMessage `protobuf:"bytes,16,rep,name=ec_shards,json=ecShards,proto3" json:"ec_shards,omitempty"`
+	// delta erasure coding shards
+	NewEcShards     []*VolumeEcShardInformationMessage `protobuf:"bytes,17,rep,name=new_ec_shards,json=newEcShards,proto3" json:"new_ec_shards,omitempty"`
+	DeletedEcShards []*VolumeEcShardInformationMessage `protobuf:"bytes,18,rep,name=deleted_ec_shards,json=deletedEcShards,proto3" json:"deleted_ec_shards,omitempty"`
+	HasNoEcShards   bool                               `protobuf:"varint,19,opt,name=has_no_ec_shards,json=hasNoEcShards,proto3" json:"has_no_ec_shards,omitempty"`
+}
+
+func (x *Heartbeat) Reset() {
+	*x = Heartbeat{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Heartbeat) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Heartbeat) ProtoMessage() {}
+
+func (x *Heartbeat) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Heartbeat.ProtoReflect.Descriptor instead.
+func (*Heartbeat) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Heartbeat) GetIp() string {
+	if x != nil {
+		return x.Ip
 	}
 	return ""
 }
 
-func (m *Heartbeat) GetPort() uint32 {
-	if m != nil {
-		return m.Port
+func (x *Heartbeat) GetPort() uint32 {
+	if x != nil {
+		return x.Port
 	}
 	return 0
 }
 
-func (m *Heartbeat) GetPublicUrl() string {
-	if m != nil {
-		return m.PublicUrl
+func (x *Heartbeat) GetPublicUrl() string {
+	if x != nil {
+		return x.PublicUrl
 	}
 	return ""
 }
 
-func (m *Heartbeat) GetMaxVolumeCount() uint32 {
-	if m != nil {
-		return m.MaxVolumeCount
+func (x *Heartbeat) GetMaxVolumeCount() uint32 {
+	if x != nil {
+		return x.MaxVolumeCount
 	}
 	return 0
 }
 
-func (m *Heartbeat) GetMaxFileKey() uint64 {
-	if m != nil {
-		return m.MaxFileKey
+func (x *Heartbeat) GetMaxFileKey() uint64 {
+	if x != nil {
+		return x.MaxFileKey
 	}
 	return 0
 }
 
-func (m *Heartbeat) GetDataCenter() string {
-	if m != nil {
-		return m.DataCenter
+func (x *Heartbeat) GetDataCenter() string {
+	if x != nil {
+		return x.DataCenter
 	}
 	return ""
 }
 
-func (m *Heartbeat) GetRack() string {
-	if m != nil {
-		return m.Rack
+func (x *Heartbeat) GetRack() string {
+	if x != nil {
+		return x.Rack
 	}
 	return ""
 }
 
-func (m *Heartbeat) GetAdminPort() uint32 {
-	if m != nil {
-		return m.AdminPort
+func (x *Heartbeat) GetAdminPort() uint32 {
+	if x != nil {
+		return x.AdminPort
 	}
 	return 0
 }
 
-func (m *Heartbeat) GetVolumes() []*VolumeInformationMessage {
-	if m != nil {
-		return m.Volumes
+func (x *Heartbeat) GetVolumes() []*VolumeInformationMessage {
+	if x != nil {
+		return x.Volumes
+	}
+	return nil
+}
+
+func (x *Heartbeat) GetNewVolumes() []*VolumeShortInformationMessage {
+	if x != nil {
+		return x.NewVolumes
+	}
+	return nil
+}
+
+func (x *Heartbeat) GetDeletedVolumes() []*VolumeShortInformationMessage {
+	if x != nil {
+		return x.DeletedVolumes
+	}
+	return nil
+}
+
+func (x *Heartbeat) GetHasNoVolumes() bool {
+	if x != nil {
+		return x.HasNoVolumes
+	}
+	return false
+}
+
+func (x *Heartbeat) GetEcShards() []*VolumeEcShardInformationMessage {
+	if x != nil {
+		return x.EcShards
 	}
 	return nil
 }
 
-func (m *Heartbeat) GetNewVids() []uint32 {
-	if m != nil {
-		return m.NewVids
+func (x *Heartbeat) GetNewEcShards() []*VolumeEcShardInformationMessage {
+	if x != nil {
+		return x.NewEcShards
 	}
 	return nil
 }
 
-func (m *Heartbeat) GetDeletedVids() []uint32 {
-	if m != nil {
-		return m.DeletedVids
+func (x *Heartbeat) GetDeletedEcShards() []*VolumeEcShardInformationMessage {
+	if x != nil {
+		return x.DeletedEcShards
 	}
 	return nil
 }
 
+func (x *Heartbeat) GetHasNoEcShards() bool {
+	if x != nil {
+		return x.HasNoEcShards
+	}
+	return false
+}
+
 type HeartbeatResponse struct {
-	VolumeSizeLimit uint64 `protobuf:"varint,1,opt,name=volumeSizeLimit" json:"volumeSizeLimit,omitempty"`
-	SecretKey       string `protobuf:"bytes,2,opt,name=secretKey" json:"secretKey,omitempty"`
-	Leader          string `protobuf:"bytes,3,opt,name=leader" json:"leader,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeSizeLimit        uint64            `protobuf:"varint,1,opt,name=volume_size_limit,json=volumeSizeLimit,proto3" json:"volume_size_limit,omitempty"`
+	Leader                 string            `protobuf:"bytes,2,opt,name=leader,proto3" json:"leader,omitempty"`
+	MetricsAddress         string            `protobuf:"bytes,3,opt,name=metrics_address,json=metricsAddress,proto3" json:"metrics_address,omitempty"`
+	MetricsIntervalSeconds uint32            `protobuf:"varint,4,opt,name=metrics_interval_seconds,json=metricsIntervalSeconds,proto3" json:"metrics_interval_seconds,omitempty"`
+	StorageBackends        []*StorageBackend `protobuf:"bytes,5,rep,name=storage_backends,json=storageBackends,proto3" json:"storage_backends,omitempty"`
+}
+
+func (x *HeartbeatResponse) Reset() {
+	*x = HeartbeatResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *HeartbeatResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *HeartbeatResponse) Reset()                    { *m = HeartbeatResponse{} }
-func (m *HeartbeatResponse) String() string            { return proto.CompactTextString(m) }
-func (*HeartbeatResponse) ProtoMessage()               {}
-func (*HeartbeatResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+func (*HeartbeatResponse) ProtoMessage() {}
 
-func (m *HeartbeatResponse) GetVolumeSizeLimit() uint64 {
-	if m != nil {
-		return m.VolumeSizeLimit
+func (x *HeartbeatResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use HeartbeatResponse.ProtoReflect.Descriptor instead.
+func (*HeartbeatResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *HeartbeatResponse) GetVolumeSizeLimit() uint64 {
+	if x != nil {
+		return x.VolumeSizeLimit
 	}
 	return 0
 }
 
-func (m *HeartbeatResponse) GetSecretKey() string {
-	if m != nil {
-		return m.SecretKey
+func (x *HeartbeatResponse) GetLeader() string {
+	if x != nil {
+		return x.Leader
 	}
 	return ""
 }
 
-func (m *HeartbeatResponse) GetLeader() string {
-	if m != nil {
-		return m.Leader
+func (x *HeartbeatResponse) GetMetricsAddress() string {
+	if x != nil {
+		return x.MetricsAddress
 	}
 	return ""
 }
 
+func (x *HeartbeatResponse) GetMetricsIntervalSeconds() uint32 {
+	if x != nil {
+		return x.MetricsIntervalSeconds
+	}
+	return 0
+}
+
+func (x *HeartbeatResponse) GetStorageBackends() []*StorageBackend {
+	if x != nil {
+		return x.StorageBackends
+	}
+	return nil
+}
+
 type VolumeInformationMessage struct {
-	Id               uint32 `protobuf:"varint,1,opt,name=id" json:"id,omitempty"`
-	Size             uint64 `protobuf:"varint,2,opt,name=size" json:"size,omitempty"`
-	Collection       string `protobuf:"bytes,3,opt,name=collection" json:"collection,omitempty"`
-	FileCount        uint64 `protobuf:"varint,4,opt,name=file_count,json=fileCount" json:"file_count,omitempty"`
-	DeleteCount      uint64 `protobuf:"varint,5,opt,name=delete_count,json=deleteCount" json:"delete_count,omitempty"`
-	DeletedByteCount uint64 `protobuf:"varint,6,opt,name=deleted_byte_count,json=deletedByteCount" json:"deleted_byte_count,omitempty"`
-	ReadOnly         bool   `protobuf:"varint,7,opt,name=read_only,json=readOnly" json:"read_only,omitempty"`
-	ReplicaPlacement uint32 `protobuf:"varint,8,opt,name=replica_placement,json=replicaPlacement" json:"replica_placement,omitempty"`
-	Version          uint32 `protobuf:"varint,9,opt,name=version" json:"version,omitempty"`
-	Ttl              uint32 `protobuf:"varint,10,opt,name=ttl" json:"ttl,omitempty"`
-}
-
-func (m *VolumeInformationMessage) Reset()                    { *m = VolumeInformationMessage{} }
-func (m *VolumeInformationMessage) String() string            { return proto.CompactTextString(m) }
-func (*VolumeInformationMessage) ProtoMessage()               {}
-func (*VolumeInformationMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
-
-func (m *VolumeInformationMessage) GetId() uint32 {
-	if m != nil {
-		return m.Id
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id                uint32 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Size              uint64 `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
+	Collection        string `protobuf:"bytes,3,opt,name=collection,proto3" json:"collection,omitempty"`
+	FileCount         uint64 `protobuf:"varint,4,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
+	DeleteCount       uint64 `protobuf:"varint,5,opt,name=delete_count,json=deleteCount,proto3" json:"delete_count,omitempty"`
+	DeletedByteCount  uint64 `protobuf:"varint,6,opt,name=deleted_byte_count,json=deletedByteCount,proto3" json:"deleted_byte_count,omitempty"`
+	ReadOnly          bool   `protobuf:"varint,7,opt,name=read_only,json=readOnly,proto3" json:"read_only,omitempty"`
+	ReplicaPlacement  uint32 `protobuf:"varint,8,opt,name=replica_placement,json=replicaPlacement,proto3" json:"replica_placement,omitempty"`
+	Version           uint32 `protobuf:"varint,9,opt,name=version,proto3" json:"version,omitempty"`
+	Ttl               uint32 `protobuf:"varint,10,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	CompactRevision   uint32 `protobuf:"varint,11,opt,name=compact_revision,json=compactRevision,proto3" json:"compact_revision,omitempty"`
+	ModifiedAtSecond  int64  `protobuf:"varint,12,opt,name=modified_at_second,json=modifiedAtSecond,proto3" json:"modified_at_second,omitempty"`
+	RemoteStorageName string `protobuf:"bytes,13,opt,name=remote_storage_name,json=remoteStorageName,proto3" json:"remote_storage_name,omitempty"`
+	RemoteStorageKey  string `protobuf:"bytes,14,opt,name=remote_storage_key,json=remoteStorageKey,proto3" json:"remote_storage_key,omitempty"`
+}
+
+func (x *VolumeInformationMessage) Reset() {
+	*x = VolumeInformationMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeInformationMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeInformationMessage) ProtoMessage() {}
+
+func (x *VolumeInformationMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeInformationMessage.ProtoReflect.Descriptor instead.
+func (*VolumeInformationMessage) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *VolumeInformationMessage) GetId() uint32 {
+	if x != nil {
+		return x.Id
 	}
 	return 0
 }
 
-func (m *VolumeInformationMessage) GetSize() uint64 {
-	if m != nil {
-		return m.Size
+func (x *VolumeInformationMessage) GetSize() uint64 {
+	if x != nil {
+		return x.Size
 	}
 	return 0
 }
 
-func (m *VolumeInformationMessage) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *VolumeInformationMessage) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *VolumeInformationMessage) GetFileCount() uint64 {
-	if m != nil {
-		return m.FileCount
+func (x *VolumeInformationMessage) GetFileCount() uint64 {
+	if x != nil {
+		return x.FileCount
 	}
 	return 0
 }
 
-func (m *VolumeInformationMessage) GetDeleteCount() uint64 {
-	if m != nil {
-		return m.DeleteCount
+func (x *VolumeInformationMessage) GetDeleteCount() uint64 {
+	if x != nil {
+		return x.DeleteCount
 	}
 	return 0
 }
 
-func (m *VolumeInformationMessage) GetDeletedByteCount() uint64 {
-	if m != nil {
-		return m.DeletedByteCount
+func (x *VolumeInformationMessage) GetDeletedByteCount() uint64 {
+	if x != nil {
+		return x.DeletedByteCount
 	}
 	return 0
 }
 
-func (m *VolumeInformationMessage) GetReadOnly() bool {
-	if m != nil {
-		return m.ReadOnly
+func (x *VolumeInformationMessage) GetReadOnly() bool {
+	if x != nil {
+		return x.ReadOnly
 	}
 	return false
 }
 
-func (m *VolumeInformationMessage) GetReplicaPlacement() uint32 {
-	if m != nil {
-		return m.ReplicaPlacement
+func (x *VolumeInformationMessage) GetReplicaPlacement() uint32 {
+	if x != nil {
+		return x.ReplicaPlacement
 	}
 	return 0
 }
 
-func (m *VolumeInformationMessage) GetVersion() uint32 {
-	if m != nil {
-		return m.Version
+func (x *VolumeInformationMessage) GetVersion() uint32 {
+	if x != nil {
+		return x.Version
 	}
 	return 0
 }
 
-func (m *VolumeInformationMessage) GetTtl() uint32 {
-	if m != nil {
-		return m.Ttl
+func (x *VolumeInformationMessage) GetTtl() uint32 {
+	if x != nil {
+		return x.Ttl
 	}
 	return 0
 }
 
-type Empty struct {
+func (x *VolumeInformationMessage) GetCompactRevision() uint32 {
+	if x != nil {
+		return x.CompactRevision
+	}
+	return 0
 }
 
-func (m *Empty) Reset()                    { *m = Empty{} }
-func (m *Empty) String() string            { return proto.CompactTextString(m) }
-func (*Empty) ProtoMessage()               {}
-func (*Empty) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+func (x *VolumeInformationMessage) GetModifiedAtSecond() int64 {
+	if x != nil {
+		return x.ModifiedAtSecond
+	}
+	return 0
+}
 
-type SuperBlockExtra struct {
-	ErasureCoding *SuperBlockExtra_ErasureCoding `protobuf:"bytes,1,opt,name=erasure_coding,json=erasureCoding" json:"erasure_coding,omitempty"`
+func (x *VolumeInformationMessage) GetRemoteStorageName() string {
+	if x != nil {
+		return x.RemoteStorageName
+	}
+	return ""
+}
+
+func (x *VolumeInformationMessage) GetRemoteStorageKey() string {
+	if x != nil {
+		return x.RemoteStorageKey
+	}
+	return ""
 }
 
-func (m *SuperBlockExtra) Reset()                    { *m = SuperBlockExtra{} }
-func (m *SuperBlockExtra) String() string            { return proto.CompactTextString(m) }
-func (*SuperBlockExtra) ProtoMessage()               {}
-func (*SuperBlockExtra) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+type VolumeShortInformationMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id               uint32 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Collection       string `protobuf:"bytes,3,opt,name=collection,proto3" json:"collection,omitempty"`
+	ReplicaPlacement uint32 `protobuf:"varint,8,opt,name=replica_placement,json=replicaPlacement,proto3" json:"replica_placement,omitempty"`
+	Version          uint32 `protobuf:"varint,9,opt,name=version,proto3" json:"version,omitempty"`
+	Ttl              uint32 `protobuf:"varint,10,opt,name=ttl,proto3" json:"ttl,omitempty"`
+}
 
-func (m *SuperBlockExtra) GetErasureCoding() *SuperBlockExtra_ErasureCoding {
-	if m != nil {
-		return m.ErasureCoding
+func (x *VolumeShortInformationMessage) Reset() {
+	*x = VolumeShortInformationMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
 	}
-	return nil
 }
 
-type SuperBlockExtra_ErasureCoding struct {
-	Data      uint32   `protobuf:"varint,1,opt,name=data" json:"data,omitempty"`
-	Parity    uint32   `protobuf:"varint,2,opt,name=parity" json:"parity,omitempty"`
-	VolumeIds []uint32 `protobuf:"varint,3,rep,packed,name=volume_ids,json=volumeIds" json:"volume_ids,omitempty"`
+func (x *VolumeShortInformationMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *SuperBlockExtra_ErasureCoding) Reset()         { *m = SuperBlockExtra_ErasureCoding{} }
-func (m *SuperBlockExtra_ErasureCoding) String() string { return proto.CompactTextString(m) }
-func (*SuperBlockExtra_ErasureCoding) ProtoMessage()    {}
-func (*SuperBlockExtra_ErasureCoding) Descriptor() ([]byte, []int) {
-	return fileDescriptor0, []int{4, 0}
+func (*VolumeShortInformationMessage) ProtoMessage() {}
+
+func (x *VolumeShortInformationMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *SuperBlockExtra_ErasureCoding) GetData() uint32 {
-	if m != nil {
-		return m.Data
+// Deprecated: Use VolumeShortInformationMessage.ProtoReflect.Descriptor instead.
+func (*VolumeShortInformationMessage) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *VolumeShortInformationMessage) GetId() uint32 {
+	if x != nil {
+		return x.Id
 	}
 	return 0
 }
 
-func (m *SuperBlockExtra_ErasureCoding) GetParity() uint32 {
-	if m != nil {
-		return m.Parity
+func (x *VolumeShortInformationMessage) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeShortInformationMessage) GetReplicaPlacement() uint32 {
+	if x != nil {
+		return x.ReplicaPlacement
 	}
 	return 0
 }
 
-func (m *SuperBlockExtra_ErasureCoding) GetVolumeIds() []uint32 {
-	if m != nil {
-		return m.VolumeIds
+func (x *VolumeShortInformationMessage) GetVersion() uint32 {
+	if x != nil {
+		return x.Version
+	}
+	return 0
+}
+
+func (x *VolumeShortInformationMessage) GetTtl() uint32 {
+	if x != nil {
+		return x.Ttl
+	}
+	return 0
+}
+
+type VolumeEcShardInformationMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id          uint32 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	EcIndexBits uint32 `protobuf:"varint,3,opt,name=ec_index_bits,json=ecIndexBits,proto3" json:"ec_index_bits,omitempty"`
+}
+
+func (x *VolumeEcShardInformationMessage) Reset() {
+	*x = VolumeEcShardInformationMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
 	}
-	return nil
 }
 
-type ClientListenRequest struct {
-	Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
+func (x *VolumeEcShardInformationMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *ClientListenRequest) Reset()                    { *m = ClientListenRequest{} }
-func (m *ClientListenRequest) String() string            { return proto.CompactTextString(m) }
-func (*ClientListenRequest) ProtoMessage()               {}
-func (*ClientListenRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+func (*VolumeEcShardInformationMessage) ProtoMessage() {}
 
-func (m *ClientListenRequest) GetName() string {
-	if m != nil {
-		return m.Name
+func (x *VolumeEcShardInformationMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardInformationMessage.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardInformationMessage) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *VolumeEcShardInformationMessage) GetId() uint32 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+func (x *VolumeEcShardInformationMessage) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-type VolumeLocation struct {
-	Url         string   `protobuf:"bytes,1,opt,name=url" json:"url,omitempty"`
-	PublicUrl   string   `protobuf:"bytes,2,opt,name=public_url,json=publicUrl" json:"public_url,omitempty"`
-	NewVids     []uint32 `protobuf:"varint,3,rep,packed,name=new_vids,json=newVids" json:"new_vids,omitempty"`
-	DeletedVids []uint32 `protobuf:"varint,4,rep,packed,name=deleted_vids,json=deletedVids" json:"deleted_vids,omitempty"`
+func (x *VolumeEcShardInformationMessage) GetEcIndexBits() uint32 {
+	if x != nil {
+		return x.EcIndexBits
+	}
+	return 0
 }
 
-func (m *VolumeLocation) Reset()                    { *m = VolumeLocation{} }
-func (m *VolumeLocation) String() string            { return proto.CompactTextString(m) }
-func (*VolumeLocation) ProtoMessage()               {}
-func (*VolumeLocation) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+type StorageBackend struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
 
-func (m *VolumeLocation) GetUrl() string {
-	if m != nil {
-		return m.Url
+	Type       string            `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
+	Id         string            `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
+	Properties map[string]string `protobuf:"bytes,3,rep,name=properties,proto3" json:"properties,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+}
+
+func (x *StorageBackend) Reset() {
+	*x = StorageBackend{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StorageBackend) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StorageBackend) ProtoMessage() {}
+
+func (x *StorageBackend) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StorageBackend.ProtoReflect.Descriptor instead.
+func (*StorageBackend) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *StorageBackend) GetType() string {
+	if x != nil {
+		return x.Type
 	}
 	return ""
 }
 
-func (m *VolumeLocation) GetPublicUrl() string {
-	if m != nil {
-		return m.PublicUrl
+func (x *StorageBackend) GetId() string {
+	if x != nil {
+		return x.Id
 	}
 	return ""
 }
 
-func (m *VolumeLocation) GetNewVids() []uint32 {
-	if m != nil {
-		return m.NewVids
+func (x *StorageBackend) GetProperties() map[string]string {
+	if x != nil {
+		return x.Properties
 	}
 	return nil
 }
 
-func (m *VolumeLocation) GetDeletedVids() []uint32 {
-	if m != nil {
-		return m.DeletedVids
+type Empty struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *Empty) Reset() {
+	*x = Empty{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
 	}
-	return nil
 }
 
-type LookupVolumeRequest struct {
-	VolumeIds  []string `protobuf:"bytes,1,rep,name=volume_ids,json=volumeIds" json:"volume_ids,omitempty"`
-	Collection string   `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
+func (x *Empty) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Empty) ProtoMessage() {}
+
+func (x *Empty) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Empty.ProtoReflect.Descriptor instead.
+func (*Empty) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{6}
+}
+
+type SuperBlockExtra struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ErasureCoding *SuperBlockExtra_ErasureCoding `protobuf:"bytes,1,opt,name=erasure_coding,json=erasureCoding,proto3" json:"erasure_coding,omitempty"`
+}
+
+func (x *SuperBlockExtra) Reset() {
+	*x = SuperBlockExtra{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SuperBlockExtra) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SuperBlockExtra) ProtoMessage() {}
+
+func (x *SuperBlockExtra) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *LookupVolumeRequest) Reset()                    { *m = LookupVolumeRequest{} }
-func (m *LookupVolumeRequest) String() string            { return proto.CompactTextString(m) }
-func (*LookupVolumeRequest) ProtoMessage()               {}
-func (*LookupVolumeRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+// Deprecated: Use SuperBlockExtra.ProtoReflect.Descriptor instead.
+func (*SuperBlockExtra) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{7}
+}
 
-func (m *LookupVolumeRequest) GetVolumeIds() []string {
-	if m != nil {
-		return m.VolumeIds
+func (x *SuperBlockExtra) GetErasureCoding() *SuperBlockExtra_ErasureCoding {
+	if x != nil {
+		return x.ErasureCoding
 	}
 	return nil
 }
 
-func (m *LookupVolumeRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+type KeepConnectedRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name     string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	GrpcPort uint32 `protobuf:"varint,2,opt,name=grpc_port,json=grpcPort,proto3" json:"grpc_port,omitempty"`
+}
+
+func (x *KeepConnectedRequest) Reset() {
+	*x = KeepConnectedRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KeepConnectedRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KeepConnectedRequest) ProtoMessage() {}
+
+func (x *KeepConnectedRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use KeepConnectedRequest.ProtoReflect.Descriptor instead.
+func (*KeepConnectedRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *KeepConnectedRequest) GetName() string {
+	if x != nil {
+		return x.Name
 	}
 	return ""
 }
 
-type LookupVolumeResponse struct {
-	VolumeIdLocations []*LookupVolumeResponse_VolumeIdLocation `protobuf:"bytes,1,rep,name=volume_id_locations,json=volumeIdLocations" json:"volume_id_locations,omitempty"`
+func (x *KeepConnectedRequest) GetGrpcPort() uint32 {
+	if x != nil {
+		return x.GrpcPort
+	}
+	return 0
 }
 
-func (m *LookupVolumeResponse) Reset()                    { *m = LookupVolumeResponse{} }
-func (m *LookupVolumeResponse) String() string            { return proto.CompactTextString(m) }
-func (*LookupVolumeResponse) ProtoMessage()               {}
-func (*LookupVolumeResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+type VolumeLocation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Url         string   `protobuf:"bytes,1,opt,name=url,proto3" json:"url,omitempty"`
+	PublicUrl   string   `protobuf:"bytes,2,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
+	NewVids     []uint32 `protobuf:"varint,3,rep,packed,name=new_vids,json=newVids,proto3" json:"new_vids,omitempty"`
+	DeletedVids []uint32 `protobuf:"varint,4,rep,packed,name=deleted_vids,json=deletedVids,proto3" json:"deleted_vids,omitempty"`
+	Leader      string   `protobuf:"bytes,5,opt,name=leader,proto3" json:"leader,omitempty"` // optional when leader is not itself
+}
 
-func (m *LookupVolumeResponse) GetVolumeIdLocations() []*LookupVolumeResponse_VolumeIdLocation {
-	if m != nil {
-		return m.VolumeIdLocations
+func (x *VolumeLocation) Reset() {
+	*x = VolumeLocation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
 	}
-	return nil
 }
 
-type LookupVolumeResponse_VolumeIdLocation struct {
-	VolumeId  string      `protobuf:"bytes,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
-	Locations []*Location `protobuf:"bytes,2,rep,name=locations" json:"locations,omitempty"`
-	Error     string      `protobuf:"bytes,3,opt,name=error" json:"error,omitempty"`
+func (x *VolumeLocation) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *LookupVolumeResponse_VolumeIdLocation) Reset()         { *m = LookupVolumeResponse_VolumeIdLocation{} }
-func (m *LookupVolumeResponse_VolumeIdLocation) String() string { return proto.CompactTextString(m) }
-func (*LookupVolumeResponse_VolumeIdLocation) ProtoMessage()    {}
-func (*LookupVolumeResponse_VolumeIdLocation) Descriptor() ([]byte, []int) {
-	return fileDescriptor0, []int{8, 0}
+func (*VolumeLocation) ProtoMessage() {}
+
+func (x *VolumeLocation) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[9]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeLocation.ProtoReflect.Descriptor instead.
+func (*VolumeLocation) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{9}
+}
+
+func (x *VolumeLocation) GetUrl() string {
+	if x != nil {
+		return x.Url
+	}
+	return ""
 }
 
-func (m *LookupVolumeResponse_VolumeIdLocation) GetVolumeId() string {
-	if m != nil {
-		return m.VolumeId
+func (x *VolumeLocation) GetPublicUrl() string {
+	if x != nil {
+		return x.PublicUrl
 	}
 	return ""
 }
 
-func (m *LookupVolumeResponse_VolumeIdLocation) GetLocations() []*Location {
-	if m != nil {
-		return m.Locations
+func (x *VolumeLocation) GetNewVids() []uint32 {
+	if x != nil {
+		return x.NewVids
+	}
+	return nil
+}
+
+func (x *VolumeLocation) GetDeletedVids() []uint32 {
+	if x != nil {
+		return x.DeletedVids
+	}
+	return nil
+}
+
+func (x *VolumeLocation) GetLeader() string {
+	if x != nil {
+		return x.Leader
+	}
+	return ""
+}
+
+type LookupVolumeRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeIds  []string `protobuf:"bytes,1,rep,name=volume_ids,json=volumeIds,proto3" json:"volume_ids,omitempty"`
+	Collection string   `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"` // optional, a bit faster if provided.
+}
+
+func (x *LookupVolumeRequest) Reset() {
+	*x = LookupVolumeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupVolumeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupVolumeRequest) ProtoMessage() {}
+
+func (x *LookupVolumeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupVolumeRequest.ProtoReflect.Descriptor instead.
+func (*LookupVolumeRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{10}
+}
+
+func (x *LookupVolumeRequest) GetVolumeIds() []string {
+	if x != nil {
+		return x.VolumeIds
 	}
 	return nil
 }
 
-func (m *LookupVolumeResponse_VolumeIdLocation) GetError() string {
-	if m != nil {
-		return m.Error
+func (x *LookupVolumeRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
+type LookupVolumeResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeIdLocations []*LookupVolumeResponse_VolumeIdLocation `protobuf:"bytes,1,rep,name=volume_id_locations,json=volumeIdLocations,proto3" json:"volume_id_locations,omitempty"`
+}
+
+func (x *LookupVolumeResponse) Reset() {
+	*x = LookupVolumeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupVolumeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupVolumeResponse) ProtoMessage() {}
+
+func (x *LookupVolumeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupVolumeResponse.ProtoReflect.Descriptor instead.
+func (*LookupVolumeResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *LookupVolumeResponse) GetVolumeIdLocations() []*LookupVolumeResponse_VolumeIdLocation {
+	if x != nil {
+		return x.VolumeIdLocations
+	}
+	return nil
+}
+
 type Location struct {
-	Url       string `protobuf:"bytes,1,opt,name=url" json:"url,omitempty"`
-	PublicUrl string `protobuf:"bytes,2,opt,name=public_url,json=publicUrl" json:"public_url,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Url       string `protobuf:"bytes,1,opt,name=url,proto3" json:"url,omitempty"`
+	PublicUrl string `protobuf:"bytes,2,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
+}
+
+func (x *Location) Reset() {
+	*x = Location{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Location) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *Location) Reset()                    { *m = Location{} }
-func (m *Location) String() string            { return proto.CompactTextString(m) }
-func (*Location) ProtoMessage()               {}
-func (*Location) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+func (*Location) ProtoMessage() {}
 
-func (m *Location) GetUrl() string {
-	if m != nil {
-		return m.Url
+func (x *Location) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Location.ProtoReflect.Descriptor instead.
+func (*Location) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{12}
+}
+
+func (x *Location) GetUrl() string {
+	if x != nil {
+		return x.Url
 	}
 	return ""
 }
 
-func (m *Location) GetPublicUrl() string {
-	if m != nil {
-		return m.PublicUrl
+func (x *Location) GetPublicUrl() string {
+	if x != nil {
+		return x.PublicUrl
 	}
 	return ""
 }
 
 type AssignRequest struct {
-	Count       uint64 `protobuf:"varint,1,opt,name=count" json:"count,omitempty"`
-	Replication string `protobuf:"bytes,2,opt,name=replication" json:"replication,omitempty"`
-	Collection  string `protobuf:"bytes,3,opt,name=collection" json:"collection,omitempty"`
-	Ttl         string `protobuf:"bytes,4,opt,name=ttl" json:"ttl,omitempty"`
-	DataCenter  string `protobuf:"bytes,5,opt,name=data_center,json=dataCenter" json:"data_center,omitempty"`
-	Rack        string `protobuf:"bytes,6,opt,name=rack" json:"rack,omitempty"`
-	DataNode    string `protobuf:"bytes,7,opt,name=data_node,json=dataNode" json:"data_node,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Count               uint64 `protobuf:"varint,1,opt,name=count,proto3" json:"count,omitempty"`
+	Replication         string `protobuf:"bytes,2,opt,name=replication,proto3" json:"replication,omitempty"`
+	Collection          string `protobuf:"bytes,3,opt,name=collection,proto3" json:"collection,omitempty"`
+	Ttl                 string `protobuf:"bytes,4,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	DataCenter          string `protobuf:"bytes,5,opt,name=data_center,json=dataCenter,proto3" json:"data_center,omitempty"`
+	Rack                string `protobuf:"bytes,6,opt,name=rack,proto3" json:"rack,omitempty"`
+	DataNode            string `protobuf:"bytes,7,opt,name=data_node,json=dataNode,proto3" json:"data_node,omitempty"`
+	MemoryMapMaxSizeMb  uint32 `protobuf:"varint,8,opt,name=memory_map_max_size_mb,json=memoryMapMaxSizeMb,proto3" json:"memory_map_max_size_mb,omitempty"`
+	WritableVolumeCount uint32 `protobuf:"varint,9,opt,name=Writable_volume_count,json=WritableVolumeCount,proto3" json:"Writable_volume_count,omitempty"`
 }
 
-func (m *AssignRequest) Reset()                    { *m = AssignRequest{} }
-func (m *AssignRequest) String() string            { return proto.CompactTextString(m) }
-func (*AssignRequest) ProtoMessage()               {}
-func (*AssignRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+func (x *AssignRequest) Reset() {
+	*x = AssignRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
 
-func (m *AssignRequest) GetCount() uint64 {
-	if m != nil {
-		return m.Count
+func (x *AssignRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AssignRequest) ProtoMessage() {}
+
+func (x *AssignRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AssignRequest.ProtoReflect.Descriptor instead.
+func (*AssignRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{13}
+}
+
+func (x *AssignRequest) GetCount() uint64 {
+	if x != nil {
+		return x.Count
 	}
 	return 0
 }
 
-func (m *AssignRequest) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *AssignRequest) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *AssignRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *AssignRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *AssignRequest) GetTtl() string {
-	if m != nil {
-		return m.Ttl
+func (x *AssignRequest) GetTtl() string {
+	if x != nil {
+		return x.Ttl
 	}
 	return ""
 }
 
-func (m *AssignRequest) GetDataCenter() string {
-	if m != nil {
-		return m.DataCenter
+func (x *AssignRequest) GetDataCenter() string {
+	if x != nil {
+		return x.DataCenter
 	}
 	return ""
 }
 
-func (m *AssignRequest) GetRack() string {
-	if m != nil {
-		return m.Rack
+func (x *AssignRequest) GetRack() string {
+	if x != nil {
+		return x.Rack
 	}
 	return ""
 }
 
-func (m *AssignRequest) GetDataNode() string {
-	if m != nil {
-		return m.DataNode
+func (x *AssignRequest) GetDataNode() string {
+	if x != nil {
+		return x.DataNode
 	}
 	return ""
 }
 
+func (x *AssignRequest) GetMemoryMapMaxSizeMb() uint32 {
+	if x != nil {
+		return x.MemoryMapMaxSizeMb
+	}
+	return 0
+}
+
+func (x *AssignRequest) GetWritableVolumeCount() uint32 {
+	if x != nil {
+		return x.WritableVolumeCount
+	}
+	return 0
+}
+
 type AssignResponse struct {
-	Fid       string `protobuf:"bytes,1,opt,name=fid" json:"fid,omitempty"`
-	Url       string `protobuf:"bytes,2,opt,name=url" json:"url,omitempty"`
-	PublicUrl string `protobuf:"bytes,3,opt,name=public_url,json=publicUrl" json:"public_url,omitempty"`
-	Count     uint64 `protobuf:"varint,4,opt,name=count" json:"count,omitempty"`
-	Error     string `protobuf:"bytes,5,opt,name=error" json:"error,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Fid       string `protobuf:"bytes,1,opt,name=fid,proto3" json:"fid,omitempty"`
+	Url       string `protobuf:"bytes,2,opt,name=url,proto3" json:"url,omitempty"`
+	PublicUrl string `protobuf:"bytes,3,opt,name=public_url,json=publicUrl,proto3" json:"public_url,omitempty"`
+	Count     uint64 `protobuf:"varint,4,opt,name=count,proto3" json:"count,omitempty"`
+	Error     string `protobuf:"bytes,5,opt,name=error,proto3" json:"error,omitempty"`
+	Auth      string `protobuf:"bytes,6,opt,name=auth,proto3" json:"auth,omitempty"`
 }
 
-func (m *AssignResponse) Reset()                    { *m = AssignResponse{} }
-func (m *AssignResponse) String() string            { return proto.CompactTextString(m) }
-func (*AssignResponse) ProtoMessage()               {}
-func (*AssignResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+func (x *AssignResponse) Reset() {
+	*x = AssignResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AssignResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AssignResponse) ProtoMessage() {}
+
+func (x *AssignResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use AssignResponse.ProtoReflect.Descriptor instead.
+func (*AssignResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{14}
+}
 
-func (m *AssignResponse) GetFid() string {
-	if m != nil {
-		return m.Fid
+func (x *AssignResponse) GetFid() string {
+	if x != nil {
+		return x.Fid
 	}
 	return ""
 }
 
-func (m *AssignResponse) GetUrl() string {
-	if m != nil {
-		return m.Url
+func (x *AssignResponse) GetUrl() string {
+	if x != nil {
+		return x.Url
 	}
 	return ""
 }
 
-func (m *AssignResponse) GetPublicUrl() string {
-	if m != nil {
-		return m.PublicUrl
+func (x *AssignResponse) GetPublicUrl() string {
+	if x != nil {
+		return x.PublicUrl
 	}
 	return ""
 }
 
-func (m *AssignResponse) GetCount() uint64 {
-	if m != nil {
-		return m.Count
+func (x *AssignResponse) GetCount() uint64 {
+	if x != nil {
+		return x.Count
 	}
 	return 0
 }
 
-func (m *AssignResponse) GetError() string {
-	if m != nil {
-		return m.Error
+func (x *AssignResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
+func (x *AssignResponse) GetAuth() string {
+	if x != nil {
+		return x.Auth
 	}
 	return ""
 }
 
 type StatisticsRequest struct {
-	Replication string `protobuf:"bytes,1,opt,name=replication" json:"replication,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
-	Ttl         string `protobuf:"bytes,3,opt,name=ttl" json:"ttl,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
+	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
 }
 
-func (m *StatisticsRequest) Reset()                    { *m = StatisticsRequest{} }
-func (m *StatisticsRequest) String() string            { return proto.CompactTextString(m) }
-func (*StatisticsRequest) ProtoMessage()               {}
-func (*StatisticsRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+func (x *StatisticsRequest) Reset() {
+	*x = StatisticsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatisticsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
 
-func (m *StatisticsRequest) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (*StatisticsRequest) ProtoMessage() {}
+
+func (x *StatisticsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StatisticsRequest.ProtoReflect.Descriptor instead.
+func (*StatisticsRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{15}
+}
+
+func (x *StatisticsRequest) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *StatisticsRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *StatisticsRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *StatisticsRequest) GetTtl() string {
-	if m != nil {
-		return m.Ttl
+func (x *StatisticsRequest) GetTtl() string {
+	if x != nil {
+		return x.Ttl
 	}
 	return ""
 }
 
 type StatisticsResponse struct {
-	Replication string `protobuf:"bytes,1,opt,name=replication" json:"replication,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
-	Ttl         string `protobuf:"bytes,3,opt,name=ttl" json:"ttl,omitempty"`
-	TotalSize   uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize" json:"total_size,omitempty"`
-	UsedSize    uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize" json:"used_size,omitempty"`
-	FileCount   uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount" json:"file_count,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
+	Collection  string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Ttl         string `protobuf:"bytes,3,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	TotalSize   uint64 `protobuf:"varint,4,opt,name=total_size,json=totalSize,proto3" json:"total_size,omitempty"`
+	UsedSize    uint64 `protobuf:"varint,5,opt,name=used_size,json=usedSize,proto3" json:"used_size,omitempty"`
+	FileCount   uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
+}
+
+func (x *StatisticsResponse) Reset() {
+	*x = StatisticsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[16]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StatisticsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *StatisticsResponse) Reset()                    { *m = StatisticsResponse{} }
-func (m *StatisticsResponse) String() string            { return proto.CompactTextString(m) }
-func (*StatisticsResponse) ProtoMessage()               {}
-func (*StatisticsResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+func (*StatisticsResponse) ProtoMessage() {}
 
-func (m *StatisticsResponse) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *StatisticsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[16]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StatisticsResponse.ProtoReflect.Descriptor instead.
+func (*StatisticsResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{16}
+}
+
+func (x *StatisticsResponse) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *StatisticsResponse) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *StatisticsResponse) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *StatisticsResponse) GetTtl() string {
-	if m != nil {
-		return m.Ttl
+func (x *StatisticsResponse) GetTtl() string {
+	if x != nil {
+		return x.Ttl
 	}
 	return ""
 }
 
-func (m *StatisticsResponse) GetTotalSize() uint64 {
-	if m != nil {
-		return m.TotalSize
+func (x *StatisticsResponse) GetTotalSize() uint64 {
+	if x != nil {
+		return x.TotalSize
 	}
 	return 0
 }
 
-func (m *StatisticsResponse) GetUsedSize() uint64 {
-	if m != nil {
-		return m.UsedSize
+func (x *StatisticsResponse) GetUsedSize() uint64 {
+	if x != nil {
+		return x.UsedSize
 	}
 	return 0
 }
 
-func (m *StatisticsResponse) GetFileCount() uint64 {
-	if m != nil {
-		return m.FileCount
+func (x *StatisticsResponse) GetFileCount() uint64 {
+	if x != nil {
+		return x.FileCount
 	}
 	return 0
 }
 
-func init() {
-	proto.RegisterType((*Heartbeat)(nil), "master_pb.Heartbeat")
-	proto.RegisterType((*HeartbeatResponse)(nil), "master_pb.HeartbeatResponse")
-	proto.RegisterType((*VolumeInformationMessage)(nil), "master_pb.VolumeInformationMessage")
-	proto.RegisterType((*Empty)(nil), "master_pb.Empty")
-	proto.RegisterType((*SuperBlockExtra)(nil), "master_pb.SuperBlockExtra")
-	proto.RegisterType((*SuperBlockExtra_ErasureCoding)(nil), "master_pb.SuperBlockExtra.ErasureCoding")
-	proto.RegisterType((*ClientListenRequest)(nil), "master_pb.ClientListenRequest")
-	proto.RegisterType((*VolumeLocation)(nil), "master_pb.VolumeLocation")
-	proto.RegisterType((*LookupVolumeRequest)(nil), "master_pb.LookupVolumeRequest")
-	proto.RegisterType((*LookupVolumeResponse)(nil), "master_pb.LookupVolumeResponse")
-	proto.RegisterType((*LookupVolumeResponse_VolumeIdLocation)(nil), "master_pb.LookupVolumeResponse.VolumeIdLocation")
-	proto.RegisterType((*Location)(nil), "master_pb.Location")
-	proto.RegisterType((*AssignRequest)(nil), "master_pb.AssignRequest")
-	proto.RegisterType((*AssignResponse)(nil), "master_pb.AssignResponse")
-	proto.RegisterType((*StatisticsRequest)(nil), "master_pb.StatisticsRequest")
-	proto.RegisterType((*StatisticsResponse)(nil), "master_pb.StatisticsResponse")
+type StorageType struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Replication string `protobuf:"bytes,1,opt,name=replication,proto3" json:"replication,omitempty"`
+	Ttl         string `protobuf:"bytes,2,opt,name=ttl,proto3" json:"ttl,omitempty"`
+}
+
+func (x *StorageType) Reset() {
+	*x = StorageType{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[17]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *StorageType) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*StorageType) ProtoMessage() {}
+
+func (x *StorageType) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[17]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use StorageType.ProtoReflect.Descriptor instead.
+func (*StorageType) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{17}
+}
+
+func (x *StorageType) GetReplication() string {
+	if x != nil {
+		return x.Replication
+	}
+	return ""
+}
+
+func (x *StorageType) GetTtl() string {
+	if x != nil {
+		return x.Ttl
+	}
+	return ""
+}
+
+type Collection struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *Collection) Reset() {
+	*x = Collection{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[18]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Collection) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Collection) ProtoMessage() {}
+
+func (x *Collection) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[18]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Collection.ProtoReflect.Descriptor instead.
+func (*Collection) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{18}
+}
+
+func (x *Collection) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+type CollectionListRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	IncludeNormalVolumes bool `protobuf:"varint,1,opt,name=include_normal_volumes,json=includeNormalVolumes,proto3" json:"include_normal_volumes,omitempty"`
+	IncludeEcVolumes     bool `protobuf:"varint,2,opt,name=include_ec_volumes,json=includeEcVolumes,proto3" json:"include_ec_volumes,omitempty"`
+}
+
+func (x *CollectionListRequest) Reset() {
+	*x = CollectionListRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[19]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CollectionListRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CollectionListRequest) ProtoMessage() {}
+
+func (x *CollectionListRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[19]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CollectionListRequest.ProtoReflect.Descriptor instead.
+func (*CollectionListRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{19}
+}
+
+func (x *CollectionListRequest) GetIncludeNormalVolumes() bool {
+	if x != nil {
+		return x.IncludeNormalVolumes
+	}
+	return false
+}
+
+func (x *CollectionListRequest) GetIncludeEcVolumes() bool {
+	if x != nil {
+		return x.IncludeEcVolumes
+	}
+	return false
+}
+
+type CollectionListResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Collections []*Collection `protobuf:"bytes,1,rep,name=collections,proto3" json:"collections,omitempty"`
+}
+
+func (x *CollectionListResponse) Reset() {
+	*x = CollectionListResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[20]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CollectionListResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CollectionListResponse) ProtoMessage() {}
+
+func (x *CollectionListResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[20]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CollectionListResponse.ProtoReflect.Descriptor instead.
+func (*CollectionListResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{20}
+}
+
+func (x *CollectionListResponse) GetCollections() []*Collection {
+	if x != nil {
+		return x.Collections
+	}
+	return nil
+}
+
+type CollectionDeleteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *CollectionDeleteRequest) Reset() {
+	*x = CollectionDeleteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[21]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CollectionDeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CollectionDeleteRequest) ProtoMessage() {}
+
+func (x *CollectionDeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[21]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CollectionDeleteRequest.ProtoReflect.Descriptor instead.
+func (*CollectionDeleteRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{21}
+}
+
+func (x *CollectionDeleteRequest) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+type CollectionDeleteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *CollectionDeleteResponse) Reset() {
+	*x = CollectionDeleteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[22]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CollectionDeleteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CollectionDeleteResponse) ProtoMessage() {}
+
+func (x *CollectionDeleteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[22]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CollectionDeleteResponse.ProtoReflect.Descriptor instead.
+func (*CollectionDeleteResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{22}
+}
+
+//
+// volume related
+//
+type DataNodeInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id                string                             `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	VolumeCount       uint64                             `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
+	MaxVolumeCount    uint64                             `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
+	FreeVolumeCount   uint64                             `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
+	ActiveVolumeCount uint64                             `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
+	VolumeInfos       []*VolumeInformationMessage        `protobuf:"bytes,6,rep,name=volume_infos,json=volumeInfos,proto3" json:"volume_infos,omitempty"`
+	EcShardInfos      []*VolumeEcShardInformationMessage `protobuf:"bytes,7,rep,name=ec_shard_infos,json=ecShardInfos,proto3" json:"ec_shard_infos,omitempty"`
+	RemoteVolumeCount uint64                             `protobuf:"varint,8,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+}
+
+func (x *DataNodeInfo) Reset() {
+	*x = DataNodeInfo{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[23]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DataNodeInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DataNodeInfo) ProtoMessage() {}
+
+func (x *DataNodeInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[23]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DataNodeInfo.ProtoReflect.Descriptor instead.
+func (*DataNodeInfo) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{23}
+}
+
+func (x *DataNodeInfo) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *DataNodeInfo) GetVolumeCount() uint64 {
+	if x != nil {
+		return x.VolumeCount
+	}
+	return 0
+}
+
+func (x *DataNodeInfo) GetMaxVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxVolumeCount
+	}
+	return 0
+}
+
+func (x *DataNodeInfo) GetFreeVolumeCount() uint64 {
+	if x != nil {
+		return x.FreeVolumeCount
+	}
+	return 0
+}
+
+func (x *DataNodeInfo) GetActiveVolumeCount() uint64 {
+	if x != nil {
+		return x.ActiveVolumeCount
+	}
+	return 0
+}
+
+func (x *DataNodeInfo) GetVolumeInfos() []*VolumeInformationMessage {
+	if x != nil {
+		return x.VolumeInfos
+	}
+	return nil
+}
+
+func (x *DataNodeInfo) GetEcShardInfos() []*VolumeEcShardInformationMessage {
+	if x != nil {
+		return x.EcShardInfos
+	}
+	return nil
+}
+
+func (x *DataNodeInfo) GetRemoteVolumeCount() uint64 {
+	if x != nil {
+		return x.RemoteVolumeCount
+	}
+	return 0
+}
+
+type RackInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id                string          `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	VolumeCount       uint64          `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
+	MaxVolumeCount    uint64          `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
+	FreeVolumeCount   uint64          `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
+	ActiveVolumeCount uint64          `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
+	DataNodeInfos     []*DataNodeInfo `protobuf:"bytes,6,rep,name=data_node_infos,json=dataNodeInfos,proto3" json:"data_node_infos,omitempty"`
+	RemoteVolumeCount uint64          `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+}
+
+func (x *RackInfo) Reset() {
+	*x = RackInfo{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[24]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RackInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RackInfo) ProtoMessage() {}
+
+func (x *RackInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[24]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RackInfo.ProtoReflect.Descriptor instead.
+func (*RackInfo) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{24}
+}
+
+func (x *RackInfo) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *RackInfo) GetVolumeCount() uint64 {
+	if x != nil {
+		return x.VolumeCount
+	}
+	return 0
+}
+
+func (x *RackInfo) GetMaxVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxVolumeCount
+	}
+	return 0
+}
+
+func (x *RackInfo) GetFreeVolumeCount() uint64 {
+	if x != nil {
+		return x.FreeVolumeCount
+	}
+	return 0
+}
+
+func (x *RackInfo) GetActiveVolumeCount() uint64 {
+	if x != nil {
+		return x.ActiveVolumeCount
+	}
+	return 0
+}
+
+func (x *RackInfo) GetDataNodeInfos() []*DataNodeInfo {
+	if x != nil {
+		return x.DataNodeInfos
+	}
+	return nil
+}
+
+func (x *RackInfo) GetRemoteVolumeCount() uint64 {
+	if x != nil {
+		return x.RemoteVolumeCount
+	}
+	return 0
+}
+
+type DataCenterInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id                string      `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	VolumeCount       uint64      `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
+	MaxVolumeCount    uint64      `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
+	FreeVolumeCount   uint64      `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
+	ActiveVolumeCount uint64      `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
+	RackInfos         []*RackInfo `protobuf:"bytes,6,rep,name=rack_infos,json=rackInfos,proto3" json:"rack_infos,omitempty"`
+	RemoteVolumeCount uint64      `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+}
+
+func (x *DataCenterInfo) Reset() {
+	*x = DataCenterInfo{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[25]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DataCenterInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DataCenterInfo) ProtoMessage() {}
+
+func (x *DataCenterInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[25]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DataCenterInfo.ProtoReflect.Descriptor instead.
+func (*DataCenterInfo) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{25}
+}
+
+func (x *DataCenterInfo) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *DataCenterInfo) GetVolumeCount() uint64 {
+	if x != nil {
+		return x.VolumeCount
+	}
+	return 0
+}
+
+func (x *DataCenterInfo) GetMaxVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxVolumeCount
+	}
+	return 0
+}
+
+func (x *DataCenterInfo) GetFreeVolumeCount() uint64 {
+	if x != nil {
+		return x.FreeVolumeCount
+	}
+	return 0
+}
+
+func (x *DataCenterInfo) GetActiveVolumeCount() uint64 {
+	if x != nil {
+		return x.ActiveVolumeCount
+	}
+	return 0
+}
+
+func (x *DataCenterInfo) GetRackInfos() []*RackInfo {
+	if x != nil {
+		return x.RackInfos
+	}
+	return nil
+}
+
+func (x *DataCenterInfo) GetRemoteVolumeCount() uint64 {
+	if x != nil {
+		return x.RemoteVolumeCount
+	}
+	return 0
+}
+
+type TopologyInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id                string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	VolumeCount       uint64            `protobuf:"varint,2,opt,name=volume_count,json=volumeCount,proto3" json:"volume_count,omitempty"`
+	MaxVolumeCount    uint64            `protobuf:"varint,3,opt,name=max_volume_count,json=maxVolumeCount,proto3" json:"max_volume_count,omitempty"`
+	FreeVolumeCount   uint64            `protobuf:"varint,4,opt,name=free_volume_count,json=freeVolumeCount,proto3" json:"free_volume_count,omitempty"`
+	ActiveVolumeCount uint64            `protobuf:"varint,5,opt,name=active_volume_count,json=activeVolumeCount,proto3" json:"active_volume_count,omitempty"`
+	DataCenterInfos   []*DataCenterInfo `protobuf:"bytes,6,rep,name=data_center_infos,json=dataCenterInfos,proto3" json:"data_center_infos,omitempty"`
+	RemoteVolumeCount uint64            `protobuf:"varint,7,opt,name=remote_volume_count,json=remoteVolumeCount,proto3" json:"remote_volume_count,omitempty"`
+}
+
+func (x *TopologyInfo) Reset() {
+	*x = TopologyInfo{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[26]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TopologyInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TopologyInfo) ProtoMessage() {}
+
+func (x *TopologyInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[26]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TopologyInfo.ProtoReflect.Descriptor instead.
+func (*TopologyInfo) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{26}
+}
+
+func (x *TopologyInfo) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *TopologyInfo) GetVolumeCount() uint64 {
+	if x != nil {
+		return x.VolumeCount
+	}
+	return 0
+}
+
+func (x *TopologyInfo) GetMaxVolumeCount() uint64 {
+	if x != nil {
+		return x.MaxVolumeCount
+	}
+	return 0
+}
+
+func (x *TopologyInfo) GetFreeVolumeCount() uint64 {
+	if x != nil {
+		return x.FreeVolumeCount
+	}
+	return 0
+}
+
+func (x *TopologyInfo) GetActiveVolumeCount() uint64 {
+	if x != nil {
+		return x.ActiveVolumeCount
+	}
+	return 0
+}
+
+func (x *TopologyInfo) GetDataCenterInfos() []*DataCenterInfo {
+	if x != nil {
+		return x.DataCenterInfos
+	}
+	return nil
+}
+
+func (x *TopologyInfo) GetRemoteVolumeCount() uint64 {
+	if x != nil {
+		return x.RemoteVolumeCount
+	}
+	return 0
+}
+
+type VolumeListRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeListRequest) Reset() {
+	*x = VolumeListRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[27]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeListRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeListRequest) ProtoMessage() {}
+
+func (x *VolumeListRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[27]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeListRequest.ProtoReflect.Descriptor instead.
+func (*VolumeListRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{27}
+}
+
+type VolumeListResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	TopologyInfo      *TopologyInfo `protobuf:"bytes,1,opt,name=topology_info,json=topologyInfo,proto3" json:"topology_info,omitempty"`
+	VolumeSizeLimitMb uint64        `protobuf:"varint,2,opt,name=volume_size_limit_mb,json=volumeSizeLimitMb,proto3" json:"volume_size_limit_mb,omitempty"`
+}
+
+func (x *VolumeListResponse) Reset() {
+	*x = VolumeListResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[28]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeListResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeListResponse) ProtoMessage() {}
+
+func (x *VolumeListResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[28]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeListResponse.ProtoReflect.Descriptor instead.
+func (*VolumeListResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{28}
+}
+
+func (x *VolumeListResponse) GetTopologyInfo() *TopologyInfo {
+	if x != nil {
+		return x.TopologyInfo
+	}
+	return nil
+}
+
+func (x *VolumeListResponse) GetVolumeSizeLimitMb() uint64 {
+	if x != nil {
+		return x.VolumeSizeLimitMb
+	}
+	return 0
+}
+
+type LookupEcVolumeRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *LookupEcVolumeRequest) Reset() {
+	*x = LookupEcVolumeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[29]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupEcVolumeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupEcVolumeRequest) ProtoMessage() {}
+
+func (x *LookupEcVolumeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[29]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupEcVolumeRequest.ProtoReflect.Descriptor instead.
+func (*LookupEcVolumeRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{29}
+}
+
+func (x *LookupEcVolumeRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+type LookupEcVolumeResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId         uint32                                      `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	ShardIdLocations []*LookupEcVolumeResponse_EcShardIdLocation `protobuf:"bytes,2,rep,name=shard_id_locations,json=shardIdLocations,proto3" json:"shard_id_locations,omitempty"`
+}
+
+func (x *LookupEcVolumeResponse) Reset() {
+	*x = LookupEcVolumeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[30]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupEcVolumeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupEcVolumeResponse) ProtoMessage() {}
+
+func (x *LookupEcVolumeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[30]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupEcVolumeResponse.ProtoReflect.Descriptor instead.
+func (*LookupEcVolumeResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{30}
+}
+
+func (x *LookupEcVolumeResponse) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *LookupEcVolumeResponse) GetShardIdLocations() []*LookupEcVolumeResponse_EcShardIdLocation {
+	if x != nil {
+		return x.ShardIdLocations
+	}
+	return nil
+}
+
+type GetMasterConfigurationRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *GetMasterConfigurationRequest) Reset() {
+	*x = GetMasterConfigurationRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[31]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetMasterConfigurationRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetMasterConfigurationRequest) ProtoMessage() {}
+
+func (x *GetMasterConfigurationRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[31]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetMasterConfigurationRequest.ProtoReflect.Descriptor instead.
+func (*GetMasterConfigurationRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{31}
+}
+
+type GetMasterConfigurationResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	MetricsAddress         string `protobuf:"bytes,1,opt,name=metrics_address,json=metricsAddress,proto3" json:"metrics_address,omitempty"`
+	MetricsIntervalSeconds uint32 `protobuf:"varint,2,opt,name=metrics_interval_seconds,json=metricsIntervalSeconds,proto3" json:"metrics_interval_seconds,omitempty"`
+}
+
+func (x *GetMasterConfigurationResponse) Reset() {
+	*x = GetMasterConfigurationResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[32]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetMasterConfigurationResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetMasterConfigurationResponse) ProtoMessage() {}
+
+func (x *GetMasterConfigurationResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[32]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetMasterConfigurationResponse.ProtoReflect.Descriptor instead.
+func (*GetMasterConfigurationResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{32}
+}
+
+func (x *GetMasterConfigurationResponse) GetMetricsAddress() string {
+	if x != nil {
+		return x.MetricsAddress
+	}
+	return ""
+}
+
+func (x *GetMasterConfigurationResponse) GetMetricsIntervalSeconds() uint32 {
+	if x != nil {
+		return x.MetricsIntervalSeconds
+	}
+	return 0
+}
+
+type ListMasterClientsRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ClientType string `protobuf:"bytes,1,opt,name=client_type,json=clientType,proto3" json:"client_type,omitempty"`
+}
+
+func (x *ListMasterClientsRequest) Reset() {
+	*x = ListMasterClientsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[33]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListMasterClientsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListMasterClientsRequest) ProtoMessage() {}
+
+func (x *ListMasterClientsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[33]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListMasterClientsRequest.ProtoReflect.Descriptor instead.
+func (*ListMasterClientsRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{33}
+}
+
+func (x *ListMasterClientsRequest) GetClientType() string {
+	if x != nil {
+		return x.ClientType
+	}
+	return ""
+}
+
+type ListMasterClientsResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	GrpcAddresses []string `protobuf:"bytes,1,rep,name=grpc_addresses,json=grpcAddresses,proto3" json:"grpc_addresses,omitempty"`
+}
+
+func (x *ListMasterClientsResponse) Reset() {
+	*x = ListMasterClientsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[34]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListMasterClientsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListMasterClientsResponse) ProtoMessage() {}
+
+func (x *ListMasterClientsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[34]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListMasterClientsResponse.ProtoReflect.Descriptor instead.
+func (*ListMasterClientsResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{34}
+}
+
+func (x *ListMasterClientsResponse) GetGrpcAddresses() []string {
+	if x != nil {
+		return x.GrpcAddresses
+	}
+	return nil
+}
+
+type LeaseAdminTokenRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PreviousToken    int64  `protobuf:"varint,1,opt,name=previous_token,json=previousToken,proto3" json:"previous_token,omitempty"`
+	PreviousLockTime int64  `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime,proto3" json:"previous_lock_time,omitempty"`
+	LockName         string `protobuf:"bytes,3,opt,name=lock_name,json=lockName,proto3" json:"lock_name,omitempty"`
+}
+
+func (x *LeaseAdminTokenRequest) Reset() {
+	*x = LeaseAdminTokenRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[35]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LeaseAdminTokenRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LeaseAdminTokenRequest) ProtoMessage() {}
+
+func (x *LeaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[35]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LeaseAdminTokenRequest.ProtoReflect.Descriptor instead.
+func (*LeaseAdminTokenRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{35}
+}
+
+func (x *LeaseAdminTokenRequest) GetPreviousToken() int64 {
+	if x != nil {
+		return x.PreviousToken
+	}
+	return 0
+}
+
+func (x *LeaseAdminTokenRequest) GetPreviousLockTime() int64 {
+	if x != nil {
+		return x.PreviousLockTime
+	}
+	return 0
+}
+
+func (x *LeaseAdminTokenRequest) GetLockName() string {
+	if x != nil {
+		return x.LockName
+	}
+	return ""
+}
+
+type LeaseAdminTokenResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Token    int64 `protobuf:"varint,1,opt,name=token,proto3" json:"token,omitempty"`
+	LockTsNs int64 `protobuf:"varint,2,opt,name=lock_ts_ns,json=lockTsNs,proto3" json:"lock_ts_ns,omitempty"`
+}
+
+func (x *LeaseAdminTokenResponse) Reset() {
+	*x = LeaseAdminTokenResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[36]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LeaseAdminTokenResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LeaseAdminTokenResponse) ProtoMessage() {}
+
+func (x *LeaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[36]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LeaseAdminTokenResponse.ProtoReflect.Descriptor instead.
+func (*LeaseAdminTokenResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{36}
+}
+
+func (x *LeaseAdminTokenResponse) GetToken() int64 {
+	if x != nil {
+		return x.Token
+	}
+	return 0
+}
+
+func (x *LeaseAdminTokenResponse) GetLockTsNs() int64 {
+	if x != nil {
+		return x.LockTsNs
+	}
+	return 0
+}
+
+type ReleaseAdminTokenRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PreviousToken    int64  `protobuf:"varint,1,opt,name=previous_token,json=previousToken,proto3" json:"previous_token,omitempty"`
+	PreviousLockTime int64  `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime,proto3" json:"previous_lock_time,omitempty"`
+	LockName         string `protobuf:"bytes,3,opt,name=lock_name,json=lockName,proto3" json:"lock_name,omitempty"`
+}
+
+func (x *ReleaseAdminTokenRequest) Reset() {
+	*x = ReleaseAdminTokenRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[37]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ReleaseAdminTokenRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ReleaseAdminTokenRequest) ProtoMessage() {}
+
+func (x *ReleaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[37]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ReleaseAdminTokenRequest.ProtoReflect.Descriptor instead.
+func (*ReleaseAdminTokenRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{37}
+}
+
+func (x *ReleaseAdminTokenRequest) GetPreviousToken() int64 {
+	if x != nil {
+		return x.PreviousToken
+	}
+	return 0
+}
+
+func (x *ReleaseAdminTokenRequest) GetPreviousLockTime() int64 {
+	if x != nil {
+		return x.PreviousLockTime
+	}
+	return 0
+}
+
+func (x *ReleaseAdminTokenRequest) GetLockName() string {
+	if x != nil {
+		return x.LockName
+	}
+	return ""
+}
+
+type ReleaseAdminTokenResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *ReleaseAdminTokenResponse) Reset() {
+	*x = ReleaseAdminTokenResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[38]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ReleaseAdminTokenResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ReleaseAdminTokenResponse) ProtoMessage() {}
+
+func (x *ReleaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[38]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ReleaseAdminTokenResponse.ProtoReflect.Descriptor instead.
+func (*ReleaseAdminTokenResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{38}
+}
+
+type SuperBlockExtra_ErasureCoding struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data      uint32   `protobuf:"varint,1,opt,name=data,proto3" json:"data,omitempty"`
+	Parity    uint32   `protobuf:"varint,2,opt,name=parity,proto3" json:"parity,omitempty"`
+	VolumeIds []uint32 `protobuf:"varint,3,rep,packed,name=volume_ids,json=volumeIds,proto3" json:"volume_ids,omitempty"`
+}
+
+func (x *SuperBlockExtra_ErasureCoding) Reset() {
+	*x = SuperBlockExtra_ErasureCoding{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[40]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SuperBlockExtra_ErasureCoding) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SuperBlockExtra_ErasureCoding) ProtoMessage() {}
+
+func (x *SuperBlockExtra_ErasureCoding) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[40]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SuperBlockExtra_ErasureCoding.ProtoReflect.Descriptor instead.
+func (*SuperBlockExtra_ErasureCoding) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{7, 0}
+}
+
+func (x *SuperBlockExtra_ErasureCoding) GetData() uint32 {
+	if x != nil {
+		return x.Data
+	}
+	return 0
+}
+
+func (x *SuperBlockExtra_ErasureCoding) GetParity() uint32 {
+	if x != nil {
+		return x.Parity
+	}
+	return 0
+}
+
+func (x *SuperBlockExtra_ErasureCoding) GetVolumeIds() []uint32 {
+	if x != nil {
+		return x.VolumeIds
+	}
+	return nil
+}
+
+type LookupVolumeResponse_VolumeIdLocation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId  string      `protobuf:"bytes,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Locations []*Location `protobuf:"bytes,2,rep,name=locations,proto3" json:"locations,omitempty"`
+	Error     string      `protobuf:"bytes,3,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *LookupVolumeResponse_VolumeIdLocation) Reset() {
+	*x = LookupVolumeResponse_VolumeIdLocation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[41]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupVolumeResponse_VolumeIdLocation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupVolumeResponse_VolumeIdLocation) ProtoMessage() {}
+
+func (x *LookupVolumeResponse_VolumeIdLocation) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[41]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupVolumeResponse_VolumeIdLocation.ProtoReflect.Descriptor instead.
+func (*LookupVolumeResponse_VolumeIdLocation) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{11, 0}
+}
+
+func (x *LookupVolumeResponse_VolumeIdLocation) GetVolumeId() string {
+	if x != nil {
+		return x.VolumeId
+	}
+	return ""
+}
+
+func (x *LookupVolumeResponse_VolumeIdLocation) GetLocations() []*Location {
+	if x != nil {
+		return x.Locations
+	}
+	return nil
+}
+
+func (x *LookupVolumeResponse_VolumeIdLocation) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
+type LookupEcVolumeResponse_EcShardIdLocation struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ShardId   uint32      `protobuf:"varint,1,opt,name=shard_id,json=shardId,proto3" json:"shard_id,omitempty"`
+	Locations []*Location `protobuf:"bytes,2,rep,name=locations,proto3" json:"locations,omitempty"`
+}
+
+func (x *LookupEcVolumeResponse_EcShardIdLocation) Reset() {
+	*x = LookupEcVolumeResponse_EcShardIdLocation{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[42]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *LookupEcVolumeResponse_EcShardIdLocation) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*LookupEcVolumeResponse_EcShardIdLocation) ProtoMessage() {}
+
+func (x *LookupEcVolumeResponse_EcShardIdLocation) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[42]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use LookupEcVolumeResponse_EcShardIdLocation.ProtoReflect.Descriptor instead.
+func (*LookupEcVolumeResponse_EcShardIdLocation) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{30, 0}
+}
+
+func (x *LookupEcVolumeResponse_EcShardIdLocation) GetShardId() uint32 {
+	if x != nil {
+		return x.ShardId
+	}
+	return 0
+}
+
+func (x *LookupEcVolumeResponse_EcShardIdLocation) GetLocations() []*Location {
+	if x != nil {
+		return x.Locations
+	}
+	return nil
+}
+
+var File_master_proto protoreflect.FileDescriptor
+
+var file_master_proto_rawDesc = []byte{
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+}
+
+var (
+	file_master_proto_rawDescOnce sync.Once
+	file_master_proto_rawDescData = file_master_proto_rawDesc
+)
+
+func file_master_proto_rawDescGZIP() []byte {
+	file_master_proto_rawDescOnce.Do(func() {
+		file_master_proto_rawDescData = protoimpl.X.CompressGZIP(file_master_proto_rawDescData)
+	})
+	return file_master_proto_rawDescData
+}
+
+var file_master_proto_msgTypes = make([]protoimpl.MessageInfo, 43)
+var file_master_proto_goTypes = []interface{}{
+	(*Heartbeat)(nil),                                // 0: master_pb.Heartbeat
+	(*HeartbeatResponse)(nil),                        // 1: master_pb.HeartbeatResponse
+	(*VolumeInformationMessage)(nil),                 // 2: master_pb.VolumeInformationMessage
+	(*VolumeShortInformationMessage)(nil),            // 3: master_pb.VolumeShortInformationMessage
+	(*VolumeEcShardInformationMessage)(nil),          // 4: master_pb.VolumeEcShardInformationMessage
+	(*StorageBackend)(nil),                           // 5: master_pb.StorageBackend
+	(*Empty)(nil),                                    // 6: master_pb.Empty
+	(*SuperBlockExtra)(nil),                          // 7: master_pb.SuperBlockExtra
+	(*KeepConnectedRequest)(nil),                     // 8: master_pb.KeepConnectedRequest
+	(*VolumeLocation)(nil),                           // 9: master_pb.VolumeLocation
+	(*LookupVolumeRequest)(nil),                      // 10: master_pb.LookupVolumeRequest
+	(*LookupVolumeResponse)(nil),                     // 11: master_pb.LookupVolumeResponse
+	(*Location)(nil),                                 // 12: master_pb.Location
+	(*AssignRequest)(nil),                            // 13: master_pb.AssignRequest
+	(*AssignResponse)(nil),                           // 14: master_pb.AssignResponse
+	(*StatisticsRequest)(nil),                        // 15: master_pb.StatisticsRequest
+	(*StatisticsResponse)(nil),                       // 16: master_pb.StatisticsResponse
+	(*StorageType)(nil),                              // 17: master_pb.StorageType
+	(*Collection)(nil),                               // 18: master_pb.Collection
+	(*CollectionListRequest)(nil),                    // 19: master_pb.CollectionListRequest
+	(*CollectionListResponse)(nil),                   // 20: master_pb.CollectionListResponse
+	(*CollectionDeleteRequest)(nil),                  // 21: master_pb.CollectionDeleteRequest
+	(*CollectionDeleteResponse)(nil),                 // 22: master_pb.CollectionDeleteResponse
+	(*DataNodeInfo)(nil),                             // 23: master_pb.DataNodeInfo
+	(*RackInfo)(nil),                                 // 24: master_pb.RackInfo
+	(*DataCenterInfo)(nil),                           // 25: master_pb.DataCenterInfo
+	(*TopologyInfo)(nil),                             // 26: master_pb.TopologyInfo
+	(*VolumeListRequest)(nil),                        // 27: master_pb.VolumeListRequest
+	(*VolumeListResponse)(nil),                       // 28: master_pb.VolumeListResponse
+	(*LookupEcVolumeRequest)(nil),                    // 29: master_pb.LookupEcVolumeRequest
+	(*LookupEcVolumeResponse)(nil),                   // 30: master_pb.LookupEcVolumeResponse
+	(*GetMasterConfigurationRequest)(nil),            // 31: master_pb.GetMasterConfigurationRequest
+	(*GetMasterConfigurationResponse)(nil),           // 32: master_pb.GetMasterConfigurationResponse
+	(*ListMasterClientsRequest)(nil),                 // 33: master_pb.ListMasterClientsRequest
+	(*ListMasterClientsResponse)(nil),                // 34: master_pb.ListMasterClientsResponse
+	(*LeaseAdminTokenRequest)(nil),                   // 35: master_pb.LeaseAdminTokenRequest
+	(*LeaseAdminTokenResponse)(nil),                  // 36: master_pb.LeaseAdminTokenResponse
+	(*ReleaseAdminTokenRequest)(nil),                 // 37: master_pb.ReleaseAdminTokenRequest
+	(*ReleaseAdminTokenResponse)(nil),                // 38: master_pb.ReleaseAdminTokenResponse
+	nil,                                              // 39: master_pb.StorageBackend.PropertiesEntry
+	(*SuperBlockExtra_ErasureCoding)(nil),            // 40: master_pb.SuperBlockExtra.ErasureCoding
+	(*LookupVolumeResponse_VolumeIdLocation)(nil),    // 41: master_pb.LookupVolumeResponse.VolumeIdLocation
+	(*LookupEcVolumeResponse_EcShardIdLocation)(nil), // 42: master_pb.LookupEcVolumeResponse.EcShardIdLocation
+}
+var file_master_proto_depIdxs = []int32{
+	2,  // 0: master_pb.Heartbeat.volumes:type_name -> master_pb.VolumeInformationMessage
+	3,  // 1: master_pb.Heartbeat.new_volumes:type_name -> master_pb.VolumeShortInformationMessage
+	3,  // 2: master_pb.Heartbeat.deleted_volumes:type_name -> master_pb.VolumeShortInformationMessage
+	4,  // 3: master_pb.Heartbeat.ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
+	4,  // 4: master_pb.Heartbeat.new_ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
+	4,  // 5: master_pb.Heartbeat.deleted_ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
+	5,  // 6: master_pb.HeartbeatResponse.storage_backends:type_name -> master_pb.StorageBackend
+	39, // 7: master_pb.StorageBackend.properties:type_name -> master_pb.StorageBackend.PropertiesEntry
+	40, // 8: master_pb.SuperBlockExtra.erasure_coding:type_name -> master_pb.SuperBlockExtra.ErasureCoding
+	41, // 9: master_pb.LookupVolumeResponse.volume_id_locations:type_name -> master_pb.LookupVolumeResponse.VolumeIdLocation
+	18, // 10: master_pb.CollectionListResponse.collections:type_name -> master_pb.Collection
+	2,  // 11: master_pb.DataNodeInfo.volume_infos:type_name -> master_pb.VolumeInformationMessage
+	4,  // 12: master_pb.DataNodeInfo.ec_shard_infos:type_name -> master_pb.VolumeEcShardInformationMessage
+	23, // 13: master_pb.RackInfo.data_node_infos:type_name -> master_pb.DataNodeInfo
+	24, // 14: master_pb.DataCenterInfo.rack_infos:type_name -> master_pb.RackInfo
+	25, // 15: master_pb.TopologyInfo.data_center_infos:type_name -> master_pb.DataCenterInfo
+	26, // 16: master_pb.VolumeListResponse.topology_info:type_name -> master_pb.TopologyInfo
+	42, // 17: master_pb.LookupEcVolumeResponse.shard_id_locations:type_name -> master_pb.LookupEcVolumeResponse.EcShardIdLocation
+	12, // 18: master_pb.LookupVolumeResponse.VolumeIdLocation.locations:type_name -> master_pb.Location
+	12, // 19: master_pb.LookupEcVolumeResponse.EcShardIdLocation.locations:type_name -> master_pb.Location
+	0,  // 20: master_pb.Seaweed.SendHeartbeat:input_type -> master_pb.Heartbeat
+	8,  // 21: master_pb.Seaweed.KeepConnected:input_type -> master_pb.KeepConnectedRequest
+	10, // 22: master_pb.Seaweed.LookupVolume:input_type -> master_pb.LookupVolumeRequest
+	13, // 23: master_pb.Seaweed.Assign:input_type -> master_pb.AssignRequest
+	15, // 24: master_pb.Seaweed.Statistics:input_type -> master_pb.StatisticsRequest
+	19, // 25: master_pb.Seaweed.CollectionList:input_type -> master_pb.CollectionListRequest
+	21, // 26: master_pb.Seaweed.CollectionDelete:input_type -> master_pb.CollectionDeleteRequest
+	27, // 27: master_pb.Seaweed.VolumeList:input_type -> master_pb.VolumeListRequest
+	29, // 28: master_pb.Seaweed.LookupEcVolume:input_type -> master_pb.LookupEcVolumeRequest
+	31, // 29: master_pb.Seaweed.GetMasterConfiguration:input_type -> master_pb.GetMasterConfigurationRequest
+	33, // 30: master_pb.Seaweed.ListMasterClients:input_type -> master_pb.ListMasterClientsRequest
+	35, // 31: master_pb.Seaweed.LeaseAdminToken:input_type -> master_pb.LeaseAdminTokenRequest
+	37, // 32: master_pb.Seaweed.ReleaseAdminToken:input_type -> master_pb.ReleaseAdminTokenRequest
+	1,  // 33: master_pb.Seaweed.SendHeartbeat:output_type -> master_pb.HeartbeatResponse
+	9,  // 34: master_pb.Seaweed.KeepConnected:output_type -> master_pb.VolumeLocation
+	11, // 35: master_pb.Seaweed.LookupVolume:output_type -> master_pb.LookupVolumeResponse
+	14, // 36: master_pb.Seaweed.Assign:output_type -> master_pb.AssignResponse
+	16, // 37: master_pb.Seaweed.Statistics:output_type -> master_pb.StatisticsResponse
+	20, // 38: master_pb.Seaweed.CollectionList:output_type -> master_pb.CollectionListResponse
+	22, // 39: master_pb.Seaweed.CollectionDelete:output_type -> master_pb.CollectionDeleteResponse
+	28, // 40: master_pb.Seaweed.VolumeList:output_type -> master_pb.VolumeListResponse
+	30, // 41: master_pb.Seaweed.LookupEcVolume:output_type -> master_pb.LookupEcVolumeResponse
+	32, // 42: master_pb.Seaweed.GetMasterConfiguration:output_type -> master_pb.GetMasterConfigurationResponse
+	34, // 43: master_pb.Seaweed.ListMasterClients:output_type -> master_pb.ListMasterClientsResponse
+	36, // 44: master_pb.Seaweed.LeaseAdminToken:output_type -> master_pb.LeaseAdminTokenResponse
+	38, // 45: master_pb.Seaweed.ReleaseAdminToken:output_type -> master_pb.ReleaseAdminTokenResponse
+	33, // [33:46] is the sub-list for method output_type
+	20, // [20:33] is the sub-list for method input_type
+	20, // [20:20] is the sub-list for extension type_name
+	20, // [20:20] is the sub-list for extension extendee
+	0,  // [0:20] is the sub-list for field type_name
+}
+
+func init() { file_master_proto_init() }
+func file_master_proto_init() {
+	if File_master_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_master_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Heartbeat); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*HeartbeatResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeInformationMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeShortInformationMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardInformationMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StorageBackend); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Empty); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SuperBlockExtra); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*KeepConnectedRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeLocation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupVolumeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupVolumeResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Location); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AssignRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AssignResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StatisticsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StatisticsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*StorageType); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Collection); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CollectionListRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CollectionListResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CollectionDeleteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CollectionDeleteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DataNodeInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RackInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DataCenterInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TopologyInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeListRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeListResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupEcVolumeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[30].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupEcVolumeResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[31].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetMasterConfigurationRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[32].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetMasterConfigurationResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[33].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListMasterClientsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[34].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListMasterClientsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LeaseAdminTokenRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LeaseAdminTokenResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ReleaseAdminTokenRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ReleaseAdminTokenResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SuperBlockExtra_ErasureCoding); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupVolumeResponse_VolumeIdLocation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*LookupEcVolumeResponse_EcShardIdLocation); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_master_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   43,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_master_proto_goTypes,
+		DependencyIndexes: file_master_proto_depIdxs,
+		MessageInfos:      file_master_proto_msgTypes,
+	}.Build()
+	File_master_proto = out.File
+	file_master_proto_rawDesc = nil
+	file_master_proto_goTypes = nil
+	file_master_proto_depIdxs = nil
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ context.Context
-var _ grpc.ClientConn
+var _ grpc.ClientConnInterface
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion4
-
-// Client API for Seaweed service
+const _ = grpc.SupportPackageIsVersion6
 
+// SeaweedClient is the client API for Seaweed service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type SeaweedClient interface {
 	SendHeartbeat(ctx context.Context, opts ...grpc.CallOption) (Seaweed_SendHeartbeatClient, error)
 	KeepConnected(ctx context.Context, opts ...grpc.CallOption) (Seaweed_KeepConnectedClient, error)
 	LookupVolume(ctx context.Context, in *LookupVolumeRequest, opts ...grpc.CallOption) (*LookupVolumeResponse, error)
 	Assign(ctx context.Context, in *AssignRequest, opts ...grpc.CallOption) (*AssignResponse, error)
 	Statistics(ctx context.Context, in *StatisticsRequest, opts ...grpc.CallOption) (*StatisticsResponse, error)
+	CollectionList(ctx context.Context, in *CollectionListRequest, opts ...grpc.CallOption) (*CollectionListResponse, error)
+	CollectionDelete(ctx context.Context, in *CollectionDeleteRequest, opts ...grpc.CallOption) (*CollectionDeleteResponse, error)
+	VolumeList(ctx context.Context, in *VolumeListRequest, opts ...grpc.CallOption) (*VolumeListResponse, error)
+	LookupEcVolume(ctx context.Context, in *LookupEcVolumeRequest, opts ...grpc.CallOption) (*LookupEcVolumeResponse, error)
+	GetMasterConfiguration(ctx context.Context, in *GetMasterConfigurationRequest, opts ...grpc.CallOption) (*GetMasterConfigurationResponse, error)
+	ListMasterClients(ctx context.Context, in *ListMasterClientsRequest, opts ...grpc.CallOption) (*ListMasterClientsResponse, error)
+	LeaseAdminToken(ctx context.Context, in *LeaseAdminTokenRequest, opts ...grpc.CallOption) (*LeaseAdminTokenResponse, error)
+	ReleaseAdminToken(ctx context.Context, in *ReleaseAdminTokenRequest, opts ...grpc.CallOption) (*ReleaseAdminTokenResponse, error)
 }
 
 type seaweedClient struct {
-	cc *grpc.ClientConn
+	cc grpc.ClientConnInterface
 }
 
-func NewSeaweedClient(cc *grpc.ClientConn) SeaweedClient {
+func NewSeaweedClient(cc grpc.ClientConnInterface) SeaweedClient {
 	return &seaweedClient{cc}
 }
 
 func (c *seaweedClient) SendHeartbeat(ctx context.Context, opts ...grpc.CallOption) (Seaweed_SendHeartbeatClient, error) {
-	stream, err := grpc.NewClientStream(ctx, &_Seaweed_serviceDesc.Streams[0], c.cc, "/master_pb.Seaweed/SendHeartbeat", opts...)
+	stream, err := c.cc.NewStream(ctx, &_Seaweed_serviceDesc.Streams[0], "/master_pb.Seaweed/SendHeartbeat", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -752,7 +4018,7 @@ func (x *seaweedSendHeartbeatClient) Recv() (*HeartbeatResponse, error) {
 }
 
 func (c *seaweedClient) KeepConnected(ctx context.Context, opts ...grpc.CallOption) (Seaweed_KeepConnectedClient, error) {
-	stream, err := grpc.NewClientStream(ctx, &_Seaweed_serviceDesc.Streams[1], c.cc, "/master_pb.Seaweed/KeepConnected", opts...)
+	stream, err := c.cc.NewStream(ctx, &_Seaweed_serviceDesc.Streams[1], "/master_pb.Seaweed/KeepConnected", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -761,7 +4027,7 @@ func (c *seaweedClient) KeepConnected(ctx context.Context, opts ...grpc.CallOpti
 }
 
 type Seaweed_KeepConnectedClient interface {
-	Send(*ClientListenRequest) error
+	Send(*KeepConnectedRequest) error
 	Recv() (*VolumeLocation, error)
 	grpc.ClientStream
 }
@@ -770,7 +4036,7 @@ type seaweedKeepConnectedClient struct {
 	grpc.ClientStream
 }
 
-func (x *seaweedKeepConnectedClient) Send(m *ClientListenRequest) error {
+func (x *seaweedKeepConnectedClient) Send(m *KeepConnectedRequest) error {
 	return x.ClientStream.SendMsg(m)
 }
 
@@ -784,7 +4050,7 @@ func (x *seaweedKeepConnectedClient) Recv() (*VolumeLocation, error) {
 
 func (c *seaweedClient) LookupVolume(ctx context.Context, in *LookupVolumeRequest, opts ...grpc.CallOption) (*LookupVolumeResponse, error) {
 	out := new(LookupVolumeResponse)
-	err := grpc.Invoke(ctx, "/master_pb.Seaweed/LookupVolume", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/LookupVolume", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -793,7 +4059,7 @@ func (c *seaweedClient) LookupVolume(ctx context.Context, in *LookupVolumeReques
 
 func (c *seaweedClient) Assign(ctx context.Context, in *AssignRequest, opts ...grpc.CallOption) (*AssignResponse, error) {
 	out := new(AssignResponse)
-	err := grpc.Invoke(ctx, "/master_pb.Seaweed/Assign", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/Assign", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -802,21 +4068,144 @@ func (c *seaweedClient) Assign(ctx context.Context, in *AssignRequest, opts ...g
 
 func (c *seaweedClient) Statistics(ctx context.Context, in *StatisticsRequest, opts ...grpc.CallOption) (*StatisticsResponse, error) {
 	out := new(StatisticsResponse)
-	err := grpc.Invoke(ctx, "/master_pb.Seaweed/Statistics", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/Statistics", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) CollectionList(ctx context.Context, in *CollectionListRequest, opts ...grpc.CallOption) (*CollectionListResponse, error) {
+	out := new(CollectionListResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/CollectionList", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) CollectionDelete(ctx context.Context, in *CollectionDeleteRequest, opts ...grpc.CallOption) (*CollectionDeleteResponse, error) {
+	out := new(CollectionDeleteResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/CollectionDelete", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) VolumeList(ctx context.Context, in *VolumeListRequest, opts ...grpc.CallOption) (*VolumeListResponse, error) {
+	out := new(VolumeListResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/VolumeList", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) LookupEcVolume(ctx context.Context, in *LookupEcVolumeRequest, opts ...grpc.CallOption) (*LookupEcVolumeResponse, error) {
+	out := new(LookupEcVolumeResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/LookupEcVolume", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) GetMasterConfiguration(ctx context.Context, in *GetMasterConfigurationRequest, opts ...grpc.CallOption) (*GetMasterConfigurationResponse, error) {
+	out := new(GetMasterConfigurationResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/GetMasterConfiguration", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) ListMasterClients(ctx context.Context, in *ListMasterClientsRequest, opts ...grpc.CallOption) (*ListMasterClientsResponse, error) {
+	out := new(ListMasterClientsResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/ListMasterClients", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-// Server API for Seaweed service
+func (c *seaweedClient) LeaseAdminToken(ctx context.Context, in *LeaseAdminTokenRequest, opts ...grpc.CallOption) (*LeaseAdminTokenResponse, error) {
+	out := new(LeaseAdminTokenResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/LeaseAdminToken", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
 
+func (c *seaweedClient) ReleaseAdminToken(ctx context.Context, in *ReleaseAdminTokenRequest, opts ...grpc.CallOption) (*ReleaseAdminTokenResponse, error) {
+	out := new(ReleaseAdminTokenResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/ReleaseAdminToken", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// SeaweedServer is the server API for Seaweed service.
 type SeaweedServer interface {
 	SendHeartbeat(Seaweed_SendHeartbeatServer) error
 	KeepConnected(Seaweed_KeepConnectedServer) error
 	LookupVolume(context.Context, *LookupVolumeRequest) (*LookupVolumeResponse, error)
 	Assign(context.Context, *AssignRequest) (*AssignResponse, error)
 	Statistics(context.Context, *StatisticsRequest) (*StatisticsResponse, error)
+	CollectionList(context.Context, *CollectionListRequest) (*CollectionListResponse, error)
+	CollectionDelete(context.Context, *CollectionDeleteRequest) (*CollectionDeleteResponse, error)
+	VolumeList(context.Context, *VolumeListRequest) (*VolumeListResponse, error)
+	LookupEcVolume(context.Context, *LookupEcVolumeRequest) (*LookupEcVolumeResponse, error)
+	GetMasterConfiguration(context.Context, *GetMasterConfigurationRequest) (*GetMasterConfigurationResponse, error)
+	ListMasterClients(context.Context, *ListMasterClientsRequest) (*ListMasterClientsResponse, error)
+	LeaseAdminToken(context.Context, *LeaseAdminTokenRequest) (*LeaseAdminTokenResponse, error)
+	ReleaseAdminToken(context.Context, *ReleaseAdminTokenRequest) (*ReleaseAdminTokenResponse, error)
+}
+
+// UnimplementedSeaweedServer can be embedded to have forward compatible implementations.
+type UnimplementedSeaweedServer struct {
+}
+
+func (*UnimplementedSeaweedServer) SendHeartbeat(Seaweed_SendHeartbeatServer) error {
+	return status.Errorf(codes.Unimplemented, "method SendHeartbeat not implemented")
+}
+func (*UnimplementedSeaweedServer) KeepConnected(Seaweed_KeepConnectedServer) error {
+	return status.Errorf(codes.Unimplemented, "method KeepConnected not implemented")
+}
+func (*UnimplementedSeaweedServer) LookupVolume(context.Context, *LookupVolumeRequest) (*LookupVolumeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method LookupVolume not implemented")
+}
+func (*UnimplementedSeaweedServer) Assign(context.Context, *AssignRequest) (*AssignResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Assign not implemented")
+}
+func (*UnimplementedSeaweedServer) Statistics(context.Context, *StatisticsRequest) (*StatisticsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Statistics not implemented")
+}
+func (*UnimplementedSeaweedServer) CollectionList(context.Context, *CollectionListRequest) (*CollectionListResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method CollectionList not implemented")
+}
+func (*UnimplementedSeaweedServer) CollectionDelete(context.Context, *CollectionDeleteRequest) (*CollectionDeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method CollectionDelete not implemented")
+}
+func (*UnimplementedSeaweedServer) VolumeList(context.Context, *VolumeListRequest) (*VolumeListResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeList not implemented")
+}
+func (*UnimplementedSeaweedServer) LookupEcVolume(context.Context, *LookupEcVolumeRequest) (*LookupEcVolumeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method LookupEcVolume not implemented")
+}
+func (*UnimplementedSeaweedServer) GetMasterConfiguration(context.Context, *GetMasterConfigurationRequest) (*GetMasterConfigurationResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetMasterConfiguration not implemented")
+}
+func (*UnimplementedSeaweedServer) ListMasterClients(context.Context, *ListMasterClientsRequest) (*ListMasterClientsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ListMasterClients not implemented")
+}
+func (*UnimplementedSeaweedServer) LeaseAdminToken(context.Context, *LeaseAdminTokenRequest) (*LeaseAdminTokenResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method LeaseAdminToken not implemented")
+}
+func (*UnimplementedSeaweedServer) ReleaseAdminToken(context.Context, *ReleaseAdminTokenRequest) (*ReleaseAdminTokenResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ReleaseAdminToken not implemented")
 }
 
 func RegisterSeaweedServer(s *grpc.Server, srv SeaweedServer) {
@@ -855,7 +4244,7 @@ func _Seaweed_KeepConnected_Handler(srv interface{}, stream grpc.ServerStream) e
 
 type Seaweed_KeepConnectedServer interface {
 	Send(*VolumeLocation) error
-	Recv() (*ClientListenRequest, error)
+	Recv() (*KeepConnectedRequest, error)
 	grpc.ServerStream
 }
 
@@ -867,8 +4256,8 @@ func (x *seaweedKeepConnectedServer) Send(m *VolumeLocation) error {
 	return x.ServerStream.SendMsg(m)
 }
 
-func (x *seaweedKeepConnectedServer) Recv() (*ClientListenRequest, error) {
-	m := new(ClientListenRequest)
+func (x *seaweedKeepConnectedServer) Recv() (*KeepConnectedRequest, error) {
+	m := new(KeepConnectedRequest)
 	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
@@ -929,6 +4318,150 @@ func _Seaweed_Statistics_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Seaweed_CollectionList_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CollectionListRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).CollectionList(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/CollectionList",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).CollectionList(ctx, req.(*CollectionListRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_CollectionDelete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CollectionDeleteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).CollectionDelete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/CollectionDelete",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).CollectionDelete(ctx, req.(*CollectionDeleteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_VolumeList_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeListRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).VolumeList(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/VolumeList",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).VolumeList(ctx, req.(*VolumeListRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_LookupEcVolume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(LookupEcVolumeRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).LookupEcVolume(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/LookupEcVolume",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).LookupEcVolume(ctx, req.(*LookupEcVolumeRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_GetMasterConfiguration_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetMasterConfigurationRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).GetMasterConfiguration(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/GetMasterConfiguration",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).GetMasterConfiguration(ctx, req.(*GetMasterConfigurationRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_ListMasterClients_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListMasterClientsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).ListMasterClients(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/ListMasterClients",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).ListMasterClients(ctx, req.(*ListMasterClientsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_LeaseAdminToken_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(LeaseAdminTokenRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).LeaseAdminToken(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/LeaseAdminToken",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).LeaseAdminToken(ctx, req.(*LeaseAdminTokenRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_ReleaseAdminToken_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ReleaseAdminTokenRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).ReleaseAdminToken(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/ReleaseAdminToken",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).ReleaseAdminToken(ctx, req.(*ReleaseAdminTokenRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Seaweed_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "master_pb.Seaweed",
 	HandlerType: (*SeaweedServer)(nil),
@@ -945,6 +4478,38 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
 			MethodName: "Statistics",
 			Handler:    _Seaweed_Statistics_Handler,
 		},
+		{
+			MethodName: "CollectionList",
+			Handler:    _Seaweed_CollectionList_Handler,
+		},
+		{
+			MethodName: "CollectionDelete",
+			Handler:    _Seaweed_CollectionDelete_Handler,
+		},
+		{
+			MethodName: "VolumeList",
+			Handler:    _Seaweed_VolumeList_Handler,
+		},
+		{
+			MethodName: "LookupEcVolume",
+			Handler:    _Seaweed_LookupEcVolume_Handler,
+		},
+		{
+			MethodName: "GetMasterConfiguration",
+			Handler:    _Seaweed_GetMasterConfiguration_Handler,
+		},
+		{
+			MethodName: "ListMasterClients",
+			Handler:    _Seaweed_ListMasterClients_Handler,
+		},
+		{
+			MethodName: "LeaseAdminToken",
+			Handler:    _Seaweed_LeaseAdminToken_Handler,
+		},
+		{
+			MethodName: "ReleaseAdminToken",
+			Handler:    _Seaweed_ReleaseAdminToken_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -962,75 +4527,3 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
 	},
 	Metadata: "master.proto",
 }
-
-func init() { proto.RegisterFile("master.proto", fileDescriptor0) }
-
-var fileDescriptor0 = []byte{
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-}
diff --git a/weed/pb/messaging.proto b/weed/pb/messaging.proto
new file mode 100644
index 000000000..04446ad16
--- /dev/null
+++ b/weed/pb/messaging.proto
@@ -0,0 +1,135 @@
+syntax = "proto3";
+
+package messaging_pb;
+
+option go_package = "github.com/chrislusf/seaweedfs/weed/pb/messaging_pb";
+option java_package = "seaweedfs.client";
+option java_outer_classname = "MessagingProto";
+
+//////////////////////////////////////////////////
+
+service SeaweedMessaging {
+
+    rpc Subscribe (stream SubscriberMessage) returns (stream BrokerMessage) {
+    }
+
+    rpc Publish (stream PublishRequest) returns (stream PublishResponse) {
+    }
+
+    rpc DeleteTopic (DeleteTopicRequest) returns (DeleteTopicResponse) {
+    }
+
+    rpc ConfigureTopic (ConfigureTopicRequest) returns (ConfigureTopicResponse) {
+    }
+
+    rpc GetTopicConfiguration (GetTopicConfigurationRequest) returns (GetTopicConfigurationResponse) {
+    }
+
+    rpc FindBroker (FindBrokerRequest) returns (FindBrokerResponse) {
+    }
+
+}
+
+//////////////////////////////////////////////////
+
+message SubscriberMessage {
+    message InitMessage {
+        string namespace = 1;
+        string topic = 2;
+        int32 partition = 3;
+        enum StartPosition {
+            LATEST = 0; // Start at the newest message
+            EARLIEST = 1; // Start at the oldest message
+            TIMESTAMP = 2; // Start after a specified timestamp, exclusive
+        }
+        StartPosition startPosition = 4; // Where to begin consuming from
+        int64 timestampNs = 5; // timestamp in nano seconds
+        string subscriber_id = 6; // uniquely identify a subscriber to track consumption
+    }
+    InitMessage init = 1;
+    message AckMessage {
+        int64 message_id = 1;
+    }
+    AckMessage ack = 2;
+    bool is_close = 3;
+}
+
+message Message {
+    int64 event_time_ns = 1 [jstype = JS_STRING];
+    bytes key = 2; // Message key
+    bytes value = 3; // Message payload
+    map<string, bytes> headers = 4; // Message headers
+    bool is_close = 5;
+}
+
+message BrokerMessage {
+    Message data = 1;
+}
+
+message PublishRequest {
+    message InitMessage {
+        string namespace = 1; // only needed on the initial request
+        string topic = 2; // only needed on the initial request
+        int32 partition = 3;
+    }
+    InitMessage init = 1;
+    Message data = 2;
+}
+
+message PublishResponse {
+    message ConfigMessage {
+        int32 partition_count = 1;
+    }
+    ConfigMessage config = 1;
+    message RedirectMessage {
+        string new_broker = 1;
+    }
+    RedirectMessage redirect = 2;
+    bool is_closed = 3;
+}
+
+message DeleteTopicRequest {
+    string namespace = 1;
+    string topic = 2;
+}
+message DeleteTopicResponse {
+}
+
+message ConfigureTopicRequest {
+    string namespace = 1;
+    string topic = 2;
+    TopicConfiguration configuration = 3;
+}
+message ConfigureTopicResponse {
+}
+
+message GetTopicConfigurationRequest {
+    string namespace = 1;
+    string topic = 2;
+}
+message GetTopicConfigurationResponse {
+    TopicConfiguration configuration = 1;
+}
+
+message FindBrokerRequest {
+    string namespace = 1;
+    string topic = 2;
+    int32 parition = 3;
+}
+
+message FindBrokerResponse {
+    string broker = 1;
+}
+
+message TopicConfiguration {
+    int32 partition_count = 1;
+    string collection = 2;
+    string replication = 3;
+    bool is_transient = 4;
+    enum Partitioning {
+        NonNullKeyHash = 0; // If not null, hash by key value. If null, round robin
+        KeyHash = 1; // hash by key value
+        RoundRobin = 2; // round robin pick one partition
+    }
+    Partitioning partitoning = 5;
+}
diff --git a/weed/pb/messaging_pb/messaging.pb.go b/weed/pb/messaging_pb/messaging.pb.go
new file mode 100644
index 000000000..90b4b724a
--- /dev/null
+++ b/weed/pb/messaging_pb/messaging.pb.go
@@ -0,0 +1,2053 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.24.0
+// 	protoc        v3.12.3
+// source: messaging.proto
+
+package messaging_pb
+
+import (
+	context "context"
+	proto "github.com/golang/protobuf/proto"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
+type SubscriberMessage_InitMessage_StartPosition int32
+
+const (
+	SubscriberMessage_InitMessage_LATEST    SubscriberMessage_InitMessage_StartPosition = 0 // Start at the newest message
+	SubscriberMessage_InitMessage_EARLIEST  SubscriberMessage_InitMessage_StartPosition = 1 // Start at the oldest message
+	SubscriberMessage_InitMessage_TIMESTAMP SubscriberMessage_InitMessage_StartPosition = 2 // Start after a specified timestamp, exclusive
+)
+
+// Enum value maps for SubscriberMessage_InitMessage_StartPosition.
+var (
+	SubscriberMessage_InitMessage_StartPosition_name = map[int32]string{
+		0: "LATEST",
+		1: "EARLIEST",
+		2: "TIMESTAMP",
+	}
+	SubscriberMessage_InitMessage_StartPosition_value = map[string]int32{
+		"LATEST":    0,
+		"EARLIEST":  1,
+		"TIMESTAMP": 2,
+	}
+)
+
+func (x SubscriberMessage_InitMessage_StartPosition) Enum() *SubscriberMessage_InitMessage_StartPosition {
+	p := new(SubscriberMessage_InitMessage_StartPosition)
+	*p = x
+	return p
+}
+
+func (x SubscriberMessage_InitMessage_StartPosition) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (SubscriberMessage_InitMessage_StartPosition) Descriptor() protoreflect.EnumDescriptor {
+	return file_messaging_proto_enumTypes[0].Descriptor()
+}
+
+func (SubscriberMessage_InitMessage_StartPosition) Type() protoreflect.EnumType {
+	return &file_messaging_proto_enumTypes[0]
+}
+
+func (x SubscriberMessage_InitMessage_StartPosition) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use SubscriberMessage_InitMessage_StartPosition.Descriptor instead.
+func (SubscriberMessage_InitMessage_StartPosition) EnumDescriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{0, 0, 0}
+}
+
+type TopicConfiguration_Partitioning int32
+
+const (
+	TopicConfiguration_NonNullKeyHash TopicConfiguration_Partitioning = 0 // If not null, hash by key value. If null, round robin
+	TopicConfiguration_KeyHash        TopicConfiguration_Partitioning = 1 // hash by key value
+	TopicConfiguration_RoundRobin     TopicConfiguration_Partitioning = 2 // round robin pick one partition
+)
+
+// Enum value maps for TopicConfiguration_Partitioning.
+var (
+	TopicConfiguration_Partitioning_name = map[int32]string{
+		0: "NonNullKeyHash",
+		1: "KeyHash",
+		2: "RoundRobin",
+	}
+	TopicConfiguration_Partitioning_value = map[string]int32{
+		"NonNullKeyHash": 0,
+		"KeyHash":        1,
+		"RoundRobin":     2,
+	}
+)
+
+func (x TopicConfiguration_Partitioning) Enum() *TopicConfiguration_Partitioning {
+	p := new(TopicConfiguration_Partitioning)
+	*p = x
+	return p
+}
+
+func (x TopicConfiguration_Partitioning) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (TopicConfiguration_Partitioning) Descriptor() protoreflect.EnumDescriptor {
+	return file_messaging_proto_enumTypes[1].Descriptor()
+}
+
+func (TopicConfiguration_Partitioning) Type() protoreflect.EnumType {
+	return &file_messaging_proto_enumTypes[1]
+}
+
+func (x TopicConfiguration_Partitioning) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use TopicConfiguration_Partitioning.Descriptor instead.
+func (TopicConfiguration_Partitioning) EnumDescriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{13, 0}
+}
+
+type SubscriberMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Init    *SubscriberMessage_InitMessage `protobuf:"bytes,1,opt,name=init,proto3" json:"init,omitempty"`
+	Ack     *SubscriberMessage_AckMessage  `protobuf:"bytes,2,opt,name=ack,proto3" json:"ack,omitempty"`
+	IsClose bool                           `protobuf:"varint,3,opt,name=is_close,json=isClose,proto3" json:"is_close,omitempty"`
+}
+
+func (x *SubscriberMessage) Reset() {
+	*x = SubscriberMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscriberMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscriberMessage) ProtoMessage() {}
+
+func (x *SubscriberMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SubscriberMessage.ProtoReflect.Descriptor instead.
+func (*SubscriberMessage) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *SubscriberMessage) GetInit() *SubscriberMessage_InitMessage {
+	if x != nil {
+		return x.Init
+	}
+	return nil
+}
+
+func (x *SubscriberMessage) GetAck() *SubscriberMessage_AckMessage {
+	if x != nil {
+		return x.Ack
+	}
+	return nil
+}
+
+func (x *SubscriberMessage) GetIsClose() bool {
+	if x != nil {
+		return x.IsClose
+	}
+	return false
+}
+
+type Message struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	EventTimeNs int64             `protobuf:"varint,1,opt,name=event_time_ns,json=eventTimeNs,proto3" json:"event_time_ns,omitempty"`
+	Key         []byte            `protobuf:"bytes,2,opt,name=key,proto3" json:"key,omitempty"`                                                                                                 // Message key
+	Value       []byte            `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"`                                                                                             // Message payload
+	Headers     map[string][]byte `protobuf:"bytes,4,rep,name=headers,proto3" json:"headers,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` // Message headers
+	IsClose     bool              `protobuf:"varint,5,opt,name=is_close,json=isClose,proto3" json:"is_close,omitempty"`
+}
+
+func (x *Message) Reset() {
+	*x = Message{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Message) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Message) ProtoMessage() {}
+
+func (x *Message) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Message.ProtoReflect.Descriptor instead.
+func (*Message) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *Message) GetEventTimeNs() int64 {
+	if x != nil {
+		return x.EventTimeNs
+	}
+	return 0
+}
+
+func (x *Message) GetKey() []byte {
+	if x != nil {
+		return x.Key
+	}
+	return nil
+}
+
+func (x *Message) GetValue() []byte {
+	if x != nil {
+		return x.Value
+	}
+	return nil
+}
+
+func (x *Message) GetHeaders() map[string][]byte {
+	if x != nil {
+		return x.Headers
+	}
+	return nil
+}
+
+func (x *Message) GetIsClose() bool {
+	if x != nil {
+		return x.IsClose
+	}
+	return false
+}
+
+type BrokerMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data *Message `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *BrokerMessage) Reset() {
+	*x = BrokerMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *BrokerMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*BrokerMessage) ProtoMessage() {}
+
+func (x *BrokerMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BrokerMessage.ProtoReflect.Descriptor instead.
+func (*BrokerMessage) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *BrokerMessage) GetData() *Message {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+type PublishRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Init *PublishRequest_InitMessage `protobuf:"bytes,1,opt,name=init,proto3" json:"init,omitempty"`
+	Data *Message                    `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
+}
+
+func (x *PublishRequest) Reset() {
+	*x = PublishRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PublishRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PublishRequest) ProtoMessage() {}
+
+func (x *PublishRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PublishRequest.ProtoReflect.Descriptor instead.
+func (*PublishRequest) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *PublishRequest) GetInit() *PublishRequest_InitMessage {
+	if x != nil {
+		return x.Init
+	}
+	return nil
+}
+
+func (x *PublishRequest) GetData() *Message {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+type PublishResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Config   *PublishResponse_ConfigMessage   `protobuf:"bytes,1,opt,name=config,proto3" json:"config,omitempty"`
+	Redirect *PublishResponse_RedirectMessage `protobuf:"bytes,2,opt,name=redirect,proto3" json:"redirect,omitempty"`
+	IsClosed bool                             `protobuf:"varint,3,opt,name=is_closed,json=isClosed,proto3" json:"is_closed,omitempty"`
+}
+
+func (x *PublishResponse) Reset() {
+	*x = PublishResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PublishResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PublishResponse) ProtoMessage() {}
+
+func (x *PublishResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PublishResponse.ProtoReflect.Descriptor instead.
+func (*PublishResponse) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *PublishResponse) GetConfig() *PublishResponse_ConfigMessage {
+	if x != nil {
+		return x.Config
+	}
+	return nil
+}
+
+func (x *PublishResponse) GetRedirect() *PublishResponse_RedirectMessage {
+	if x != nil {
+		return x.Redirect
+	}
+	return nil
+}
+
+func (x *PublishResponse) GetIsClosed() bool {
+	if x != nil {
+		return x.IsClosed
+	}
+	return false
+}
+
+type DeleteTopicRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Namespace string `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Topic     string `protobuf:"bytes,2,opt,name=topic,proto3" json:"topic,omitempty"`
+}
+
+func (x *DeleteTopicRequest) Reset() {
+	*x = DeleteTopicRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteTopicRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteTopicRequest) ProtoMessage() {}
+
+func (x *DeleteTopicRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteTopicRequest.ProtoReflect.Descriptor instead.
+func (*DeleteTopicRequest) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *DeleteTopicRequest) GetNamespace() string {
+	if x != nil {
+		return x.Namespace
+	}
+	return ""
+}
+
+func (x *DeleteTopicRequest) GetTopic() string {
+	if x != nil {
+		return x.Topic
+	}
+	return ""
+}
+
+type DeleteTopicResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *DeleteTopicResponse) Reset() {
+	*x = DeleteTopicResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteTopicResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteTopicResponse) ProtoMessage() {}
+
+func (x *DeleteTopicResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteTopicResponse.ProtoReflect.Descriptor instead.
+func (*DeleteTopicResponse) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{6}
+}
+
+type ConfigureTopicRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Namespace     string              `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Topic         string              `protobuf:"bytes,2,opt,name=topic,proto3" json:"topic,omitempty"`
+	Configuration *TopicConfiguration `protobuf:"bytes,3,opt,name=configuration,proto3" json:"configuration,omitempty"`
+}
+
+func (x *ConfigureTopicRequest) Reset() {
+	*x = ConfigureTopicRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ConfigureTopicRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ConfigureTopicRequest) ProtoMessage() {}
+
+func (x *ConfigureTopicRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ConfigureTopicRequest.ProtoReflect.Descriptor instead.
+func (*ConfigureTopicRequest) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *ConfigureTopicRequest) GetNamespace() string {
+	if x != nil {
+		return x.Namespace
+	}
+	return ""
+}
+
+func (x *ConfigureTopicRequest) GetTopic() string {
+	if x != nil {
+		return x.Topic
+	}
+	return ""
+}
+
+func (x *ConfigureTopicRequest) GetConfiguration() *TopicConfiguration {
+	if x != nil {
+		return x.Configuration
+	}
+	return nil
+}
+
+type ConfigureTopicResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *ConfigureTopicResponse) Reset() {
+	*x = ConfigureTopicResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ConfigureTopicResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ConfigureTopicResponse) ProtoMessage() {}
+
+func (x *ConfigureTopicResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ConfigureTopicResponse.ProtoReflect.Descriptor instead.
+func (*ConfigureTopicResponse) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{8}
+}
+
+type GetTopicConfigurationRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Namespace string `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Topic     string `protobuf:"bytes,2,opt,name=topic,proto3" json:"topic,omitempty"`
+}
+
+func (x *GetTopicConfigurationRequest) Reset() {
+	*x = GetTopicConfigurationRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetTopicConfigurationRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetTopicConfigurationRequest) ProtoMessage() {}
+
+func (x *GetTopicConfigurationRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[9]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetTopicConfigurationRequest.ProtoReflect.Descriptor instead.
+func (*GetTopicConfigurationRequest) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{9}
+}
+
+func (x *GetTopicConfigurationRequest) GetNamespace() string {
+	if x != nil {
+		return x.Namespace
+	}
+	return ""
+}
+
+func (x *GetTopicConfigurationRequest) GetTopic() string {
+	if x != nil {
+		return x.Topic
+	}
+	return ""
+}
+
+type GetTopicConfigurationResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Configuration *TopicConfiguration `protobuf:"bytes,1,opt,name=configuration,proto3" json:"configuration,omitempty"`
+}
+
+func (x *GetTopicConfigurationResponse) Reset() {
+	*x = GetTopicConfigurationResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetTopicConfigurationResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetTopicConfigurationResponse) ProtoMessage() {}
+
+func (x *GetTopicConfigurationResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetTopicConfigurationResponse.ProtoReflect.Descriptor instead.
+func (*GetTopicConfigurationResponse) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{10}
+}
+
+func (x *GetTopicConfigurationResponse) GetConfiguration() *TopicConfiguration {
+	if x != nil {
+		return x.Configuration
+	}
+	return nil
+}
+
+type FindBrokerRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Namespace string `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Topic     string `protobuf:"bytes,2,opt,name=topic,proto3" json:"topic,omitempty"`
+	Parition  int32  `protobuf:"varint,3,opt,name=parition,proto3" json:"parition,omitempty"`
+}
+
+func (x *FindBrokerRequest) Reset() {
+	*x = FindBrokerRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FindBrokerRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FindBrokerRequest) ProtoMessage() {}
+
+func (x *FindBrokerRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FindBrokerRequest.ProtoReflect.Descriptor instead.
+func (*FindBrokerRequest) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *FindBrokerRequest) GetNamespace() string {
+	if x != nil {
+		return x.Namespace
+	}
+	return ""
+}
+
+func (x *FindBrokerRequest) GetTopic() string {
+	if x != nil {
+		return x.Topic
+	}
+	return ""
+}
+
+func (x *FindBrokerRequest) GetParition() int32 {
+	if x != nil {
+		return x.Parition
+	}
+	return 0
+}
+
+type FindBrokerResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Broker string `protobuf:"bytes,1,opt,name=broker,proto3" json:"broker,omitempty"`
+}
+
+func (x *FindBrokerResponse) Reset() {
+	*x = FindBrokerResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *FindBrokerResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*FindBrokerResponse) ProtoMessage() {}
+
+func (x *FindBrokerResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use FindBrokerResponse.ProtoReflect.Descriptor instead.
+func (*FindBrokerResponse) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{12}
+}
+
+func (x *FindBrokerResponse) GetBroker() string {
+	if x != nil {
+		return x.Broker
+	}
+	return ""
+}
+
+type TopicConfiguration struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PartitionCount int32                           `protobuf:"varint,1,opt,name=partition_count,json=partitionCount,proto3" json:"partition_count,omitempty"`
+	Collection     string                          `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Replication    string                          `protobuf:"bytes,3,opt,name=replication,proto3" json:"replication,omitempty"`
+	IsTransient    bool                            `protobuf:"varint,4,opt,name=is_transient,json=isTransient,proto3" json:"is_transient,omitempty"`
+	Partitoning    TopicConfiguration_Partitioning `protobuf:"varint,5,opt,name=partitoning,proto3,enum=messaging_pb.TopicConfiguration_Partitioning" json:"partitoning,omitempty"`
+}
+
+func (x *TopicConfiguration) Reset() {
+	*x = TopicConfiguration{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TopicConfiguration) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TopicConfiguration) ProtoMessage() {}
+
+func (x *TopicConfiguration) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TopicConfiguration.ProtoReflect.Descriptor instead.
+func (*TopicConfiguration) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{13}
+}
+
+func (x *TopicConfiguration) GetPartitionCount() int32 {
+	if x != nil {
+		return x.PartitionCount
+	}
+	return 0
+}
+
+func (x *TopicConfiguration) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *TopicConfiguration) GetReplication() string {
+	if x != nil {
+		return x.Replication
+	}
+	return ""
+}
+
+func (x *TopicConfiguration) GetIsTransient() bool {
+	if x != nil {
+		return x.IsTransient
+	}
+	return false
+}
+
+func (x *TopicConfiguration) GetPartitoning() TopicConfiguration_Partitioning {
+	if x != nil {
+		return x.Partitoning
+	}
+	return TopicConfiguration_NonNullKeyHash
+}
+
+type SubscriberMessage_InitMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Namespace     string                                      `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Topic         string                                      `protobuf:"bytes,2,opt,name=topic,proto3" json:"topic,omitempty"`
+	Partition     int32                                       `protobuf:"varint,3,opt,name=partition,proto3" json:"partition,omitempty"`
+	StartPosition SubscriberMessage_InitMessage_StartPosition `protobuf:"varint,4,opt,name=startPosition,proto3,enum=messaging_pb.SubscriberMessage_InitMessage_StartPosition" json:"startPosition,omitempty"` // Where to begin consuming from
+	TimestampNs   int64                                       `protobuf:"varint,5,opt,name=timestampNs,proto3" json:"timestampNs,omitempty"`                                                                   // timestamp in nano seconds
+	SubscriberId  string                                      `protobuf:"bytes,6,opt,name=subscriber_id,json=subscriberId,proto3" json:"subscriber_id,omitempty"`                                              // uniquely identify a subscriber to track consumption
+}
+
+func (x *SubscriberMessage_InitMessage) Reset() {
+	*x = SubscriberMessage_InitMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscriberMessage_InitMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscriberMessage_InitMessage) ProtoMessage() {}
+
+func (x *SubscriberMessage_InitMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SubscriberMessage_InitMessage.ProtoReflect.Descriptor instead.
+func (*SubscriberMessage_InitMessage) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{0, 0}
+}
+
+func (x *SubscriberMessage_InitMessage) GetNamespace() string {
+	if x != nil {
+		return x.Namespace
+	}
+	return ""
+}
+
+func (x *SubscriberMessage_InitMessage) GetTopic() string {
+	if x != nil {
+		return x.Topic
+	}
+	return ""
+}
+
+func (x *SubscriberMessage_InitMessage) GetPartition() int32 {
+	if x != nil {
+		return x.Partition
+	}
+	return 0
+}
+
+func (x *SubscriberMessage_InitMessage) GetStartPosition() SubscriberMessage_InitMessage_StartPosition {
+	if x != nil {
+		return x.StartPosition
+	}
+	return SubscriberMessage_InitMessage_LATEST
+}
+
+func (x *SubscriberMessage_InitMessage) GetTimestampNs() int64 {
+	if x != nil {
+		return x.TimestampNs
+	}
+	return 0
+}
+
+func (x *SubscriberMessage_InitMessage) GetSubscriberId() string {
+	if x != nil {
+		return x.SubscriberId
+	}
+	return ""
+}
+
+type SubscriberMessage_AckMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	MessageId int64 `protobuf:"varint,1,opt,name=message_id,json=messageId,proto3" json:"message_id,omitempty"`
+}
+
+func (x *SubscriberMessage_AckMessage) Reset() {
+	*x = SubscriberMessage_AckMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubscriberMessage_AckMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubscriberMessage_AckMessage) ProtoMessage() {}
+
+func (x *SubscriberMessage_AckMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SubscriberMessage_AckMessage.ProtoReflect.Descriptor instead.
+func (*SubscriberMessage_AckMessage) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{0, 1}
+}
+
+func (x *SubscriberMessage_AckMessage) GetMessageId() int64 {
+	if x != nil {
+		return x.MessageId
+	}
+	return 0
+}
+
+type PublishRequest_InitMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Namespace string `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"` // only needed on the initial request
+	Topic     string `protobuf:"bytes,2,opt,name=topic,proto3" json:"topic,omitempty"`         // only needed on the initial request
+	Partition int32  `protobuf:"varint,3,opt,name=partition,proto3" json:"partition,omitempty"`
+}
+
+func (x *PublishRequest_InitMessage) Reset() {
+	*x = PublishRequest_InitMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[17]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PublishRequest_InitMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PublishRequest_InitMessage) ProtoMessage() {}
+
+func (x *PublishRequest_InitMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[17]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PublishRequest_InitMessage.ProtoReflect.Descriptor instead.
+func (*PublishRequest_InitMessage) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{3, 0}
+}
+
+func (x *PublishRequest_InitMessage) GetNamespace() string {
+	if x != nil {
+		return x.Namespace
+	}
+	return ""
+}
+
+func (x *PublishRequest_InitMessage) GetTopic() string {
+	if x != nil {
+		return x.Topic
+	}
+	return ""
+}
+
+func (x *PublishRequest_InitMessage) GetPartition() int32 {
+	if x != nil {
+		return x.Partition
+	}
+	return 0
+}
+
+type PublishResponse_ConfigMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PartitionCount int32 `protobuf:"varint,1,opt,name=partition_count,json=partitionCount,proto3" json:"partition_count,omitempty"`
+}
+
+func (x *PublishResponse_ConfigMessage) Reset() {
+	*x = PublishResponse_ConfigMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[18]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PublishResponse_ConfigMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PublishResponse_ConfigMessage) ProtoMessage() {}
+
+func (x *PublishResponse_ConfigMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[18]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PublishResponse_ConfigMessage.ProtoReflect.Descriptor instead.
+func (*PublishResponse_ConfigMessage) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{4, 0}
+}
+
+func (x *PublishResponse_ConfigMessage) GetPartitionCount() int32 {
+	if x != nil {
+		return x.PartitionCount
+	}
+	return 0
+}
+
+type PublishResponse_RedirectMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	NewBroker string `protobuf:"bytes,1,opt,name=new_broker,json=newBroker,proto3" json:"new_broker,omitempty"`
+}
+
+func (x *PublishResponse_RedirectMessage) Reset() {
+	*x = PublishResponse_RedirectMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_messaging_proto_msgTypes[19]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PublishResponse_RedirectMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PublishResponse_RedirectMessage) ProtoMessage() {}
+
+func (x *PublishResponse_RedirectMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_messaging_proto_msgTypes[19]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PublishResponse_RedirectMessage.ProtoReflect.Descriptor instead.
+func (*PublishResponse_RedirectMessage) Descriptor() ([]byte, []int) {
+	return file_messaging_proto_rawDescGZIP(), []int{4, 1}
+}
+
+func (x *PublishResponse_RedirectMessage) GetNewBroker() string {
+	if x != nil {
+		return x.NewBroker
+	}
+	return ""
+}
+
+var File_messaging_proto protoreflect.FileDescriptor
+
+var file_messaging_proto_rawDesc = []byte{
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+}
+
+var (
+	file_messaging_proto_rawDescOnce sync.Once
+	file_messaging_proto_rawDescData = file_messaging_proto_rawDesc
+)
+
+func file_messaging_proto_rawDescGZIP() []byte {
+	file_messaging_proto_rawDescOnce.Do(func() {
+		file_messaging_proto_rawDescData = protoimpl.X.CompressGZIP(file_messaging_proto_rawDescData)
+	})
+	return file_messaging_proto_rawDescData
+}
+
+var file_messaging_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_messaging_proto_msgTypes = make([]protoimpl.MessageInfo, 20)
+var file_messaging_proto_goTypes = []interface{}{
+	(SubscriberMessage_InitMessage_StartPosition)(0), // 0: messaging_pb.SubscriberMessage.InitMessage.StartPosition
+	(TopicConfiguration_Partitioning)(0),             // 1: messaging_pb.TopicConfiguration.Partitioning
+	(*SubscriberMessage)(nil),                        // 2: messaging_pb.SubscriberMessage
+	(*Message)(nil),                                  // 3: messaging_pb.Message
+	(*BrokerMessage)(nil),                            // 4: messaging_pb.BrokerMessage
+	(*PublishRequest)(nil),                           // 5: messaging_pb.PublishRequest
+	(*PublishResponse)(nil),                          // 6: messaging_pb.PublishResponse
+	(*DeleteTopicRequest)(nil),                       // 7: messaging_pb.DeleteTopicRequest
+	(*DeleteTopicResponse)(nil),                      // 8: messaging_pb.DeleteTopicResponse
+	(*ConfigureTopicRequest)(nil),                    // 9: messaging_pb.ConfigureTopicRequest
+	(*ConfigureTopicResponse)(nil),                   // 10: messaging_pb.ConfigureTopicResponse
+	(*GetTopicConfigurationRequest)(nil),             // 11: messaging_pb.GetTopicConfigurationRequest
+	(*GetTopicConfigurationResponse)(nil),            // 12: messaging_pb.GetTopicConfigurationResponse
+	(*FindBrokerRequest)(nil),                        // 13: messaging_pb.FindBrokerRequest
+	(*FindBrokerResponse)(nil),                       // 14: messaging_pb.FindBrokerResponse
+	(*TopicConfiguration)(nil),                       // 15: messaging_pb.TopicConfiguration
+	(*SubscriberMessage_InitMessage)(nil),            // 16: messaging_pb.SubscriberMessage.InitMessage
+	(*SubscriberMessage_AckMessage)(nil),             // 17: messaging_pb.SubscriberMessage.AckMessage
+	nil,                                              // 18: messaging_pb.Message.HeadersEntry
+	(*PublishRequest_InitMessage)(nil),               // 19: messaging_pb.PublishRequest.InitMessage
+	(*PublishResponse_ConfigMessage)(nil),            // 20: messaging_pb.PublishResponse.ConfigMessage
+	(*PublishResponse_RedirectMessage)(nil),          // 21: messaging_pb.PublishResponse.RedirectMessage
+}
+var file_messaging_proto_depIdxs = []int32{
+	16, // 0: messaging_pb.SubscriberMessage.init:type_name -> messaging_pb.SubscriberMessage.InitMessage
+	17, // 1: messaging_pb.SubscriberMessage.ack:type_name -> messaging_pb.SubscriberMessage.AckMessage
+	18, // 2: messaging_pb.Message.headers:type_name -> messaging_pb.Message.HeadersEntry
+	3,  // 3: messaging_pb.BrokerMessage.data:type_name -> messaging_pb.Message
+	19, // 4: messaging_pb.PublishRequest.init:type_name -> messaging_pb.PublishRequest.InitMessage
+	3,  // 5: messaging_pb.PublishRequest.data:type_name -> messaging_pb.Message
+	20, // 6: messaging_pb.PublishResponse.config:type_name -> messaging_pb.PublishResponse.ConfigMessage
+	21, // 7: messaging_pb.PublishResponse.redirect:type_name -> messaging_pb.PublishResponse.RedirectMessage
+	15, // 8: messaging_pb.ConfigureTopicRequest.configuration:type_name -> messaging_pb.TopicConfiguration
+	15, // 9: messaging_pb.GetTopicConfigurationResponse.configuration:type_name -> messaging_pb.TopicConfiguration
+	1,  // 10: messaging_pb.TopicConfiguration.partitoning:type_name -> messaging_pb.TopicConfiguration.Partitioning
+	0,  // 11: messaging_pb.SubscriberMessage.InitMessage.startPosition:type_name -> messaging_pb.SubscriberMessage.InitMessage.StartPosition
+	2,  // 12: messaging_pb.SeaweedMessaging.Subscribe:input_type -> messaging_pb.SubscriberMessage
+	5,  // 13: messaging_pb.SeaweedMessaging.Publish:input_type -> messaging_pb.PublishRequest
+	7,  // 14: messaging_pb.SeaweedMessaging.DeleteTopic:input_type -> messaging_pb.DeleteTopicRequest
+	9,  // 15: messaging_pb.SeaweedMessaging.ConfigureTopic:input_type -> messaging_pb.ConfigureTopicRequest
+	11, // 16: messaging_pb.SeaweedMessaging.GetTopicConfiguration:input_type -> messaging_pb.GetTopicConfigurationRequest
+	13, // 17: messaging_pb.SeaweedMessaging.FindBroker:input_type -> messaging_pb.FindBrokerRequest
+	4,  // 18: messaging_pb.SeaweedMessaging.Subscribe:output_type -> messaging_pb.BrokerMessage
+	6,  // 19: messaging_pb.SeaweedMessaging.Publish:output_type -> messaging_pb.PublishResponse
+	8,  // 20: messaging_pb.SeaweedMessaging.DeleteTopic:output_type -> messaging_pb.DeleteTopicResponse
+	10, // 21: messaging_pb.SeaweedMessaging.ConfigureTopic:output_type -> messaging_pb.ConfigureTopicResponse
+	12, // 22: messaging_pb.SeaweedMessaging.GetTopicConfiguration:output_type -> messaging_pb.GetTopicConfigurationResponse
+	14, // 23: messaging_pb.SeaweedMessaging.FindBroker:output_type -> messaging_pb.FindBrokerResponse
+	18, // [18:24] is the sub-list for method output_type
+	12, // [12:18] is the sub-list for method input_type
+	12, // [12:12] is the sub-list for extension type_name
+	12, // [12:12] is the sub-list for extension extendee
+	0,  // [0:12] is the sub-list for field type_name
+}
+
+func init() { file_messaging_proto_init() }
+func file_messaging_proto_init() {
+	if File_messaging_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_messaging_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscriberMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Message); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*BrokerMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PublishRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PublishResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteTopicRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteTopicResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ConfigureTopicRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ConfigureTopicResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetTopicConfigurationRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetTopicConfigurationResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FindBrokerRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*FindBrokerResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TopicConfiguration); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscriberMessage_InitMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubscriberMessage_AckMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PublishRequest_InitMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PublishResponse_ConfigMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_messaging_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PublishResponse_RedirectMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_messaging_proto_rawDesc,
+			NumEnums:      2,
+			NumMessages:   20,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_messaging_proto_goTypes,
+		DependencyIndexes: file_messaging_proto_depIdxs,
+		EnumInfos:         file_messaging_proto_enumTypes,
+		MessageInfos:      file_messaging_proto_msgTypes,
+	}.Build()
+	File_messaging_proto = out.File
+	file_messaging_proto_rawDesc = nil
+	file_messaging_proto_goTypes = nil
+	file_messaging_proto_depIdxs = nil
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConnInterface
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion6
+
+// SeaweedMessagingClient is the client API for SeaweedMessaging service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type SeaweedMessagingClient interface {
+	Subscribe(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_SubscribeClient, error)
+	Publish(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_PublishClient, error)
+	DeleteTopic(ctx context.Context, in *DeleteTopicRequest, opts ...grpc.CallOption) (*DeleteTopicResponse, error)
+	ConfigureTopic(ctx context.Context, in *ConfigureTopicRequest, opts ...grpc.CallOption) (*ConfigureTopicResponse, error)
+	GetTopicConfiguration(ctx context.Context, in *GetTopicConfigurationRequest, opts ...grpc.CallOption) (*GetTopicConfigurationResponse, error)
+	FindBroker(ctx context.Context, in *FindBrokerRequest, opts ...grpc.CallOption) (*FindBrokerResponse, error)
+}
+
+type seaweedMessagingClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewSeaweedMessagingClient(cc grpc.ClientConnInterface) SeaweedMessagingClient {
+	return &seaweedMessagingClient{cc}
+}
+
+func (c *seaweedMessagingClient) Subscribe(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_SubscribeClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_SeaweedMessaging_serviceDesc.Streams[0], "/messaging_pb.SeaweedMessaging/Subscribe", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedMessagingSubscribeClient{stream}
+	return x, nil
+}
+
+type SeaweedMessaging_SubscribeClient interface {
+	Send(*SubscriberMessage) error
+	Recv() (*BrokerMessage, error)
+	grpc.ClientStream
+}
+
+type seaweedMessagingSubscribeClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedMessagingSubscribeClient) Send(m *SubscriberMessage) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *seaweedMessagingSubscribeClient) Recv() (*BrokerMessage, error) {
+	m := new(BrokerMessage)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *seaweedMessagingClient) Publish(ctx context.Context, opts ...grpc.CallOption) (SeaweedMessaging_PublishClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_SeaweedMessaging_serviceDesc.Streams[1], "/messaging_pb.SeaweedMessaging/Publish", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &seaweedMessagingPublishClient{stream}
+	return x, nil
+}
+
+type SeaweedMessaging_PublishClient interface {
+	Send(*PublishRequest) error
+	Recv() (*PublishResponse, error)
+	grpc.ClientStream
+}
+
+type seaweedMessagingPublishClient struct {
+	grpc.ClientStream
+}
+
+func (x *seaweedMessagingPublishClient) Send(m *PublishRequest) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *seaweedMessagingPublishClient) Recv() (*PublishResponse, error) {
+	m := new(PublishResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *seaweedMessagingClient) DeleteTopic(ctx context.Context, in *DeleteTopicRequest, opts ...grpc.CallOption) (*DeleteTopicResponse, error) {
+	out := new(DeleteTopicResponse)
+	err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/DeleteTopic", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedMessagingClient) ConfigureTopic(ctx context.Context, in *ConfigureTopicRequest, opts ...grpc.CallOption) (*ConfigureTopicResponse, error) {
+	out := new(ConfigureTopicResponse)
+	err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/ConfigureTopic", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedMessagingClient) GetTopicConfiguration(ctx context.Context, in *GetTopicConfigurationRequest, opts ...grpc.CallOption) (*GetTopicConfigurationResponse, error) {
+	out := new(GetTopicConfigurationResponse)
+	err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/GetTopicConfiguration", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedMessagingClient) FindBroker(ctx context.Context, in *FindBrokerRequest, opts ...grpc.CallOption) (*FindBrokerResponse, error) {
+	out := new(FindBrokerResponse)
+	err := c.cc.Invoke(ctx, "/messaging_pb.SeaweedMessaging/FindBroker", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// SeaweedMessagingServer is the server API for SeaweedMessaging service.
+type SeaweedMessagingServer interface {
+	Subscribe(SeaweedMessaging_SubscribeServer) error
+	Publish(SeaweedMessaging_PublishServer) error
+	DeleteTopic(context.Context, *DeleteTopicRequest) (*DeleteTopicResponse, error)
+	ConfigureTopic(context.Context, *ConfigureTopicRequest) (*ConfigureTopicResponse, error)
+	GetTopicConfiguration(context.Context, *GetTopicConfigurationRequest) (*GetTopicConfigurationResponse, error)
+	FindBroker(context.Context, *FindBrokerRequest) (*FindBrokerResponse, error)
+}
+
+// UnimplementedSeaweedMessagingServer can be embedded to have forward compatible implementations.
+type UnimplementedSeaweedMessagingServer struct {
+}
+
+func (*UnimplementedSeaweedMessagingServer) Subscribe(SeaweedMessaging_SubscribeServer) error {
+	return status.Errorf(codes.Unimplemented, "method Subscribe not implemented")
+}
+func (*UnimplementedSeaweedMessagingServer) Publish(SeaweedMessaging_PublishServer) error {
+	return status.Errorf(codes.Unimplemented, "method Publish not implemented")
+}
+func (*UnimplementedSeaweedMessagingServer) DeleteTopic(context.Context, *DeleteTopicRequest) (*DeleteTopicResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DeleteTopic not implemented")
+}
+func (*UnimplementedSeaweedMessagingServer) ConfigureTopic(context.Context, *ConfigureTopicRequest) (*ConfigureTopicResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ConfigureTopic not implemented")
+}
+func (*UnimplementedSeaweedMessagingServer) GetTopicConfiguration(context.Context, *GetTopicConfigurationRequest) (*GetTopicConfigurationResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetTopicConfiguration not implemented")
+}
+func (*UnimplementedSeaweedMessagingServer) FindBroker(context.Context, *FindBrokerRequest) (*FindBrokerResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method FindBroker not implemented")
+}
+
+func RegisterSeaweedMessagingServer(s *grpc.Server, srv SeaweedMessagingServer) {
+	s.RegisterService(&_SeaweedMessaging_serviceDesc, srv)
+}
+
+func _SeaweedMessaging_Subscribe_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(SeaweedMessagingServer).Subscribe(&seaweedMessagingSubscribeServer{stream})
+}
+
+type SeaweedMessaging_SubscribeServer interface {
+	Send(*BrokerMessage) error
+	Recv() (*SubscriberMessage, error)
+	grpc.ServerStream
+}
+
+type seaweedMessagingSubscribeServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedMessagingSubscribeServer) Send(m *BrokerMessage) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *seaweedMessagingSubscribeServer) Recv() (*SubscriberMessage, error) {
+	m := new(SubscriberMessage)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func _SeaweedMessaging_Publish_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(SeaweedMessagingServer).Publish(&seaweedMessagingPublishServer{stream})
+}
+
+type SeaweedMessaging_PublishServer interface {
+	Send(*PublishResponse) error
+	Recv() (*PublishRequest, error)
+	grpc.ServerStream
+}
+
+type seaweedMessagingPublishServer struct {
+	grpc.ServerStream
+}
+
+func (x *seaweedMessagingPublishServer) Send(m *PublishResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *seaweedMessagingPublishServer) Recv() (*PublishRequest, error) {
+	m := new(PublishRequest)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func _SeaweedMessaging_DeleteTopic_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteTopicRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedMessagingServer).DeleteTopic(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/messaging_pb.SeaweedMessaging/DeleteTopic",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedMessagingServer).DeleteTopic(ctx, req.(*DeleteTopicRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedMessaging_ConfigureTopic_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ConfigureTopicRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedMessagingServer).ConfigureTopic(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/messaging_pb.SeaweedMessaging/ConfigureTopic",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedMessagingServer).ConfigureTopic(ctx, req.(*ConfigureTopicRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedMessaging_GetTopicConfiguration_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetTopicConfigurationRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedMessagingServer).GetTopicConfiguration(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/messaging_pb.SeaweedMessaging/GetTopicConfiguration",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedMessagingServer).GetTopicConfiguration(ctx, req.(*GetTopicConfigurationRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedMessaging_FindBroker_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(FindBrokerRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedMessagingServer).FindBroker(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/messaging_pb.SeaweedMessaging/FindBroker",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedMessagingServer).FindBroker(ctx, req.(*FindBrokerRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _SeaweedMessaging_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "messaging_pb.SeaweedMessaging",
+	HandlerType: (*SeaweedMessagingServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "DeleteTopic",
+			Handler:    _SeaweedMessaging_DeleteTopic_Handler,
+		},
+		{
+			MethodName: "ConfigureTopic",
+			Handler:    _SeaweedMessaging_ConfigureTopic_Handler,
+		},
+		{
+			MethodName: "GetTopicConfiguration",
+			Handler:    _SeaweedMessaging_GetTopicConfiguration_Handler,
+		},
+		{
+			MethodName: "FindBroker",
+			Handler:    _SeaweedMessaging_FindBroker_Handler,
+		},
+	},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "Subscribe",
+			Handler:       _SeaweedMessaging_Subscribe_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+		{
+			StreamName:    "Publish",
+			Handler:       _SeaweedMessaging_Publish_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
+	Metadata: "messaging.proto",
+}
diff --git a/weed/pb/proto_read_write_test.go b/weed/pb/proto_read_write_test.go
new file mode 100644
index 000000000..7f6444ab5
--- /dev/null
+++ b/weed/pb/proto_read_write_test.go
@@ -0,0 +1,43 @@
+package pb
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/golang/protobuf/jsonpb"
+)
+
+func TestJsonpMarshalUnmarshal(t *testing.T) {
+
+	tv := &volume_server_pb.RemoteFile{
+		BackendType: "aws",
+		BackendId:   "",
+		FileSize:    12,
+	}
+
+	m := jsonpb.Marshaler{
+		EmitDefaults: true,
+		Indent:       "  ",
+	}
+
+	if text, err := m.MarshalToString(tv); err != nil {
+		fmt.Printf("marshal eror: %v\n", err)
+	} else {
+		fmt.Printf("marshalled: %s\n", text)
+	}
+
+	rawJson := `{
+		"backendType":"aws",
+		"backendId":"temp",
+		"FileSize":12
+	}`
+
+	tv1 := &volume_server_pb.RemoteFile{}
+	if err := jsonpb.UnmarshalString(rawJson, tv1); err != nil {
+		fmt.Printf("unmarshal error: %v\n", err)
+	}
+
+	fmt.Printf("unmarshalled: %+v\n", tv1)
+
+}
diff --git a/weed/pb/shared_values.go b/weed/pb/shared_values.go
new file mode 100644
index 000000000..1af19e51a
--- /dev/null
+++ b/weed/pb/shared_values.go
@@ -0,0 +1,5 @@
+package pb
+
+const (
+	AdminShellClient = "adminShell"
+)
diff --git a/weed/pb/volume_info.go b/weed/pb/volume_info.go
new file mode 100644
index 000000000..c4f733f5c
--- /dev/null
+++ b/weed/pb/volume_info.go
@@ -0,0 +1,76 @@
+package pb
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+
+	_ "github.com/chrislusf/seaweedfs/weed/storage/backend/s3_backend"
+	"github.com/chrislusf/seaweedfs/weed/util"
+
+	"github.com/golang/protobuf/jsonpb"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
+)
+
+// MaybeLoadVolumeInfo load the file data as *volume_server_pb.VolumeInfo, the returned volumeInfo will not be nil
+func MaybeLoadVolumeInfo(fileName string) (*volume_server_pb.VolumeInfo, bool, error) {
+
+	volumeInfo := &volume_server_pb.VolumeInfo{}
+
+	glog.V(1).Infof("maybeLoadVolumeInfo checks %s", fileName)
+	if exists, canRead, _, _, _ := util.CheckFile(fileName); !exists || !canRead {
+		if !exists {
+			return volumeInfo, false, nil
+		}
+		if !canRead {
+			glog.Warningf("can not read %s", fileName)
+			return volumeInfo, false, fmt.Errorf("can not read %s", fileName)
+		}
+		return volumeInfo, false, nil
+	}
+
+	glog.V(1).Infof("maybeLoadVolumeInfo reads %s", fileName)
+	tierData, readErr := ioutil.ReadFile(fileName)
+	if readErr != nil {
+		glog.Warningf("fail to read %s : %v", fileName, readErr)
+		return volumeInfo, false, fmt.Errorf("fail to read %s : %v", fileName, readErr)
+	}
+
+	glog.V(1).Infof("maybeLoadVolumeInfo Unmarshal volume info %v", fileName)
+	if err := jsonpb.Unmarshal(bytes.NewReader(tierData), volumeInfo); err != nil {
+		glog.Warningf("unmarshal error: %v", err)
+		return volumeInfo, false, fmt.Errorf("unmarshal error: %v", err)
+	}
+
+	if len(volumeInfo.GetFiles()) == 0 {
+		return volumeInfo, false, nil
+	}
+
+	return volumeInfo, true, nil
+}
+
+func SaveVolumeInfo(fileName string, volumeInfo *volume_server_pb.VolumeInfo) error {
+
+	if exists, _, canWrite, _, _ := util.CheckFile(fileName); exists && !canWrite {
+		return fmt.Errorf("%s not writable", fileName)
+	}
+
+	m := jsonpb.Marshaler{
+		EmitDefaults: true,
+		Indent:       "  ",
+	}
+
+	text, marshalErr := m.MarshalToString(volumeInfo)
+	if marshalErr != nil {
+		return fmt.Errorf("marshal to %s: %v", fileName, marshalErr)
+	}
+
+	writeErr := ioutil.WriteFile(fileName, []byte(text), 0755)
+	if writeErr != nil {
+		return fmt.Errorf("fail to write %s : %v", fileName, writeErr)
+	}
+
+	return nil
+}
diff --git a/weed/pb/volume_server.proto b/weed/pb/volume_server.proto
index 8ab67a1bf..c9727e8d3 100644
--- a/weed/pb/volume_server.proto
+++ b/weed/pb/volume_server.proto
@@ -1,6 +1,7 @@
 syntax = "proto3";
 
 package volume_server_pb;
+option go_package = "github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb";
 
 //////////////////////////////////////////////////
 
@@ -8,6 +9,7 @@ service VolumeServer {
     //Experts only: takes multiple fid parameters. This function does not propagate deletes to replicas.
     rpc BatchDelete (BatchDeleteRequest) returns (BatchDeleteResponse) {
     }
+
     rpc VacuumVolumeCheck (VacuumVolumeCheckRequest) returns (VacuumVolumeCheckResponse) {
     }
     rpc VacuumVolumeCompact (VacuumVolumeCompactRequest) returns (VacuumVolumeCompactResponse) {
@@ -19,14 +21,12 @@ service VolumeServer {
 
     rpc DeleteCollection (DeleteCollectionRequest) returns (DeleteCollectionResponse) {
     }
-    rpc AssignVolume (AssignVolumeRequest) returns (AssignVolumeResponse) {
+    rpc AllocateVolume (AllocateVolumeRequest) returns (AllocateVolumeResponse) {
     }
 
     rpc VolumeSyncStatus (VolumeSyncStatusRequest) returns (VolumeSyncStatusResponse) {
     }
-    rpc VolumeSyncIndex (VolumeSyncIndexRequest) returns (stream VolumeSyncIndexResponse) {
-    }
-    rpc VolumeSyncData (VolumeSyncDataRequest) returns (stream VolumeSyncDataResponse) {
+    rpc VolumeIncrementalCopy (VolumeIncrementalCopyRequest) returns (stream VolumeIncrementalCopyResponse) {
     }
 
     rpc VolumeMount (VolumeMountRequest) returns (VolumeMountResponse) {
@@ -35,8 +35,56 @@ service VolumeServer {
     }
     rpc VolumeDelete (VolumeDeleteRequest) returns (VolumeDeleteResponse) {
     }
+    rpc VolumeMarkReadonly (VolumeMarkReadonlyRequest) returns (VolumeMarkReadonlyResponse) {
+    }
+    rpc VolumeConfigure (VolumeConfigureRequest) returns (VolumeConfigureResponse) {
+    }
+
+    // copy the .idx .dat files, and mount this volume
+    rpc VolumeCopy (VolumeCopyRequest) returns (VolumeCopyResponse) {
+    }
+    rpc ReadVolumeFileStatus (ReadVolumeFileStatusRequest) returns (ReadVolumeFileStatusResponse) {
+    }
+    rpc CopyFile (CopyFileRequest) returns (stream CopyFileResponse) {
+    }
+
+    rpc VolumeTailSender (VolumeTailSenderRequest) returns (stream VolumeTailSenderResponse) {
+    }
+    rpc VolumeTailReceiver (VolumeTailReceiverRequest) returns (VolumeTailReceiverResponse) {
+    }
 
-    // rpc VolumeUiPage (VolumeUiPageRequest) returns (VolumeUiPageResponse) {}
+    // erasure coding
+    rpc VolumeEcShardsGenerate (VolumeEcShardsGenerateRequest) returns (VolumeEcShardsGenerateResponse) {
+    }
+    rpc VolumeEcShardsRebuild (VolumeEcShardsRebuildRequest) returns (VolumeEcShardsRebuildResponse) {
+    }
+    rpc VolumeEcShardsCopy (VolumeEcShardsCopyRequest) returns (VolumeEcShardsCopyResponse) {
+    }
+    rpc VolumeEcShardsDelete (VolumeEcShardsDeleteRequest) returns (VolumeEcShardsDeleteResponse) {
+    }
+    rpc VolumeEcShardsMount (VolumeEcShardsMountRequest) returns (VolumeEcShardsMountResponse) {
+    }
+    rpc VolumeEcShardsUnmount (VolumeEcShardsUnmountRequest) returns (VolumeEcShardsUnmountResponse) {
+    }
+    rpc VolumeEcShardRead (VolumeEcShardReadRequest) returns (stream VolumeEcShardReadResponse) {
+    }
+    rpc VolumeEcBlobDelete (VolumeEcBlobDeleteRequest) returns (VolumeEcBlobDeleteResponse) {
+    }
+    rpc VolumeEcShardsToVolume (VolumeEcShardsToVolumeRequest) returns (VolumeEcShardsToVolumeResponse) {
+    }
+
+    // tiered storage
+    rpc VolumeTierMoveDatToRemote (VolumeTierMoveDatToRemoteRequest) returns (stream VolumeTierMoveDatToRemoteResponse) {
+    }
+    rpc VolumeTierMoveDatFromRemote (VolumeTierMoveDatFromRemoteRequest) returns (stream VolumeTierMoveDatFromRemoteResponse) {
+    }
+
+    rpc VolumeServerStatus (VolumeServerStatusRequest) returns (VolumeServerStatusResponse) {
+    }
+
+    // <experimental> query
+    rpc Query (QueryRequest) returns (stream QueriedStripe) {
+    }
 
 }
 
@@ -44,6 +92,7 @@ service VolumeServer {
 
 message BatchDeleteRequest {
     repeated string file_ids = 1;
+    bool skip_cookie_check = 2;
 }
 
 message BatchDeleteResponse {
@@ -54,33 +103,35 @@ message DeleteResult {
     int32 status = 2;
     string error = 3;
     uint32 size = 4;
+    uint32 version = 5;
 }
 
 message Empty {
 }
 
 message VacuumVolumeCheckRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
 }
 message VacuumVolumeCheckResponse {
     double garbage_ratio = 1;
 }
 
 message VacuumVolumeCompactRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
     int64 preallocate = 2;
 }
 message VacuumVolumeCompactResponse {
 }
 
 message VacuumVolumeCommitRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
 }
 message VacuumVolumeCommitResponse {
+    bool is_read_only = 1;
 }
 
 message VacuumVolumeCleanupRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
 }
 message VacuumVolumeCleanupResponse {
 }
@@ -91,21 +142,22 @@ message DeleteCollectionRequest {
 message DeleteCollectionResponse {
 }
 
-message AssignVolumeRequest {
-    uint32 volumd_id = 1;
+message AllocateVolumeRequest {
+    uint32 volume_id = 1;
     string collection = 2;
     int64 preallocate = 3;
     string replication = 4;
     string ttl = 5;
+    uint32 memory_map_max_size_mb = 6;
 }
-message AssignVolumeResponse {
+message AllocateVolumeResponse {
 }
 
 message VolumeSyncStatusRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
 }
 message VolumeSyncStatusResponse {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
     string collection = 2;
     string replication = 4;
     string ttl = 5;
@@ -114,45 +166,180 @@ message VolumeSyncStatusResponse {
     uint64 idx_file_size = 8;
 }
 
-message VolumeSyncIndexRequest {
-    uint32 volumd_id = 1;
+message VolumeIncrementalCopyRequest {
+    uint32 volume_id = 1;
+    uint64 since_ns = 2;
 }
-message VolumeSyncIndexResponse {
-    bytes index_file_content = 1;
-}
-
-message VolumeSyncDataRequest {
-    uint32 volumd_id = 1;
-    uint32 revision = 2;
-    uint32 offset = 3;
-    uint32 size = 4;
-    string needle_id = 5;
-}
-message VolumeSyncDataResponse {
+message VolumeIncrementalCopyResponse {
     bytes file_content = 1;
 }
 
 message VolumeMountRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
 }
 message VolumeMountResponse {
 }
 
 message VolumeUnmountRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
 }
 message VolumeUnmountResponse {
 }
 
 message VolumeDeleteRequest {
-    uint32 volumd_id = 1;
+    uint32 volume_id = 1;
 }
 message VolumeDeleteResponse {
 }
 
-message VolumeUiPageRequest {
+message VolumeMarkReadonlyRequest {
+    uint32 volume_id = 1;
+}
+message VolumeMarkReadonlyResponse {
+}
+
+message VolumeConfigureRequest {
+    uint32 volume_id = 1;
+    string replication = 2;
+}
+message VolumeConfigureResponse {
+    string error = 1;
+}
+
+message VolumeCopyRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+    string replication = 3;
+    string ttl = 4;
+    string source_data_node = 5;
+}
+message VolumeCopyResponse {
+    uint64 last_append_at_ns = 1;
+}
+
+message CopyFileRequest {
+    uint32 volume_id = 1;
+    string ext = 2;
+    uint32 compaction_revision = 3;
+    uint64 stop_offset = 4;
+    string collection = 5;
+    bool is_ec_volume = 6;
+    bool ignore_source_file_not_found = 7;
+}
+message CopyFileResponse {
+    bytes file_content = 1;
+}
+
+message VolumeTailSenderRequest {
+    uint32 volume_id = 1;
+    uint64 since_ns = 2;
+    uint32 idle_timeout_seconds = 3;
+}
+message VolumeTailSenderResponse {
+    bytes needle_header = 1;
+    bytes needle_body = 2;
+    bool is_last_chunk = 3;
+}
+
+message VolumeTailReceiverRequest {
+    uint32 volume_id = 1;
+    uint64 since_ns = 2;
+    uint32 idle_timeout_seconds = 3;
+    string source_volume_server = 4;
+}
+message VolumeTailReceiverResponse {
+}
+
+message VolumeEcShardsGenerateRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+}
+message VolumeEcShardsGenerateResponse {
+}
+
+message VolumeEcShardsRebuildRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+}
+message VolumeEcShardsRebuildResponse {
+    repeated uint32 rebuilt_shard_ids = 1;
+}
+
+message VolumeEcShardsCopyRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+    repeated uint32 shard_ids = 3;
+    bool copy_ecx_file = 4;
+    string source_data_node = 5;
+    bool copy_ecj_file = 6;
+    bool copy_vif_file = 7;
+}
+message VolumeEcShardsCopyResponse {
+}
+
+message VolumeEcShardsDeleteRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+    repeated uint32 shard_ids = 3;
+}
+message VolumeEcShardsDeleteResponse {
+}
+
+message VolumeEcShardsMountRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+    repeated uint32 shard_ids = 3;
+}
+message VolumeEcShardsMountResponse {
+}
+
+message VolumeEcShardsUnmountRequest {
+    uint32 volume_id = 1;
+    repeated uint32 shard_ids = 3;
+}
+message VolumeEcShardsUnmountResponse {
+}
+
+message VolumeEcShardReadRequest {
+    uint32 volume_id = 1;
+    uint32 shard_id = 2;
+    int64 offset = 3;
+    int64 size = 4;
+    uint64 file_key = 5;
+}
+message VolumeEcShardReadResponse {
+    bytes data = 1;
+    bool is_deleted = 2;
+}
+
+message VolumeEcBlobDeleteRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+    uint64 file_key = 3;
+    uint32 version = 4;
+}
+message VolumeEcBlobDeleteResponse {
+}
+
+message VolumeEcShardsToVolumeRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
 }
-message VolumeUiPageResponse {
+message VolumeEcShardsToVolumeResponse {
+}
+
+message ReadVolumeFileStatusRequest {
+    uint32 volume_id = 1;
+}
+message ReadVolumeFileStatusResponse {
+    uint32 volume_id = 1;
+    uint64 idx_file_timestamp_seconds = 2;
+    uint64 idx_file_size = 3;
+    uint64 dat_file_timestamp_seconds = 4;
+    uint64 dat_file_size = 5;
+    uint64 file_count = 6;
+    uint32 compaction_revision = 7;
+    string collection = 8;
 }
 
 message DiskStatus {
@@ -160,6 +347,8 @@ message DiskStatus {
     uint64 all = 2;
     uint64 used = 3;
     uint64 free = 4;
+    float percent_free = 5;
+    float percent_used = 6;
 }
 
 message MemStatus {
@@ -171,3 +360,106 @@ message MemStatus {
     uint64 heap = 6;
     uint64 stack = 7;
 }
+
+// tired storage on volume servers
+message RemoteFile {
+    string backend_type = 1;
+    string backend_id = 2;
+    string key = 3;
+    uint64 offset = 4;
+    uint64 file_size = 5;
+    uint64 modified_time = 6;
+    string extension = 7;
+}
+message VolumeInfo {
+    repeated RemoteFile files = 1;
+    uint32 version = 2;
+    string replication = 3;
+}
+
+message VolumeTierMoveDatToRemoteRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+    string destination_backend_name = 3;
+    bool keep_local_dat_file = 4;
+}
+message VolumeTierMoveDatToRemoteResponse {
+    int64 processed = 1;
+    float processedPercentage = 2;
+}
+
+message VolumeTierMoveDatFromRemoteRequest {
+    uint32 volume_id = 1;
+    string collection = 2;
+    bool keep_remote_dat_file = 3;
+}
+message VolumeTierMoveDatFromRemoteResponse {
+    int64 processed = 1;
+    float processedPercentage = 2;
+}
+
+message VolumeServerStatusRequest {
+
+}
+message VolumeServerStatusResponse {
+    repeated DiskStatus disk_statuses = 1;
+    MemStatus memory_status = 2;
+}
+
+// select on volume servers
+message QueryRequest {
+    repeated string selections = 1;
+    repeated string from_file_ids = 2;
+    message Filter {
+        string field = 1;
+        string operand = 2;
+        string value = 3;
+    }
+    Filter filter = 3;
+
+    message InputSerialization {
+        // NONE | GZIP | BZIP2
+        string compression_type = 1;
+        message CSVInput {
+            string file_header_info = 1; // Valid values: NONE | USE | IGNORE
+            string record_delimiter = 2; // Default: \n
+            string field_delimiter = 3; // Default: ,
+            string quote_charactoer = 4; // Default: "
+            string quote_escape_character = 5; // Default: "
+            string comments = 6; // Default: #
+            // If true, records might contain record delimiters within quote characters
+            bool allow_quoted_record_delimiter = 7; // default False.
+        }
+        message JSONInput {
+            string type = 1; // Valid values: DOCUMENT | LINES
+        }
+        message ParquetInput {
+        }
+
+        CSVInput csv_input = 2;
+        JSONInput json_input = 3;
+        ParquetInput parquet_input = 4;
+    }
+    InputSerialization input_serialization = 4;
+
+    message OutputSerialization {
+        message CSVOutput {
+            string quote_fields = 1; // Valid values: ALWAYS | ASNEEDED
+            string record_delimiter = 2; // Default: \n
+            string field_delimiter = 3; // Default: ,
+            string quote_charactoer = 4; // Default: "
+            string quote_escape_character = 5; // Default: "
+        }
+        message JSONOutput {
+            string record_delimiter = 1;
+        }
+
+        CSVOutput csv_output = 2;
+        JSONOutput json_output = 3;
+    }
+
+    OutputSerialization output_serialization = 5;
+}
+message QueriedStripe {
+    bytes records = 1;
+}
diff --git a/weed/pb/volume_server_pb/volume_server.pb.go b/weed/pb/volume_server_pb/volume_server.pb.go
index fa700e2e5..85d248258 100644
--- a/weed/pb/volume_server_pb/volume_server.pb.go
+++ b/weed/pb/volume_server_pb/volume_server.pb.go
@@ -1,782 +1,6384 @@
-// Code generated by protoc-gen-go.
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.24.0
+// 	protoc        v3.12.3
 // source: volume_server.proto
-// DO NOT EDIT!
-
-/*
-Package volume_server_pb is a generated protocol buffer package.
-
-It is generated from these files:
-	volume_server.proto
-
-It has these top-level messages:
-	BatchDeleteRequest
-	BatchDeleteResponse
-	DeleteResult
-	Empty
-	VacuumVolumeCheckRequest
-	VacuumVolumeCheckResponse
-	VacuumVolumeCompactRequest
-	VacuumVolumeCompactResponse
-	VacuumVolumeCommitRequest
-	VacuumVolumeCommitResponse
-	VacuumVolumeCleanupRequest
-	VacuumVolumeCleanupResponse
-	DeleteCollectionRequest
-	DeleteCollectionResponse
-	AssignVolumeRequest
-	AssignVolumeResponse
-	VolumeSyncStatusRequest
-	VolumeSyncStatusResponse
-	VolumeSyncIndexRequest
-	VolumeSyncIndexResponse
-	VolumeSyncDataRequest
-	VolumeSyncDataResponse
-	VolumeMountRequest
-	VolumeMountResponse
-	VolumeUnmountRequest
-	VolumeUnmountResponse
-	VolumeDeleteRequest
-	VolumeDeleteResponse
-	VolumeUiPageRequest
-	VolumeUiPageResponse
-	DiskStatus
-	MemStatus
-*/
-package volume_server_pb
 
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
+package volume_server_pb
 
 import (
-	context "golang.org/x/net/context"
+	context "context"
+	proto "github.com/golang/protobuf/proto"
 	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
 
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
 
 type BatchDeleteRequest struct {
-	FileIds []string `protobuf:"bytes,1,rep,name=file_ids,json=fileIds" json:"file_ids,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FileIds         []string `protobuf:"bytes,1,rep,name=file_ids,json=fileIds,proto3" json:"file_ids,omitempty"`
+	SkipCookieCheck bool     `protobuf:"varint,2,opt,name=skip_cookie_check,json=skipCookieCheck,proto3" json:"skip_cookie_check,omitempty"`
 }
 
-func (m *BatchDeleteRequest) Reset()                    { *m = BatchDeleteRequest{} }
-func (m *BatchDeleteRequest) String() string            { return proto.CompactTextString(m) }
-func (*BatchDeleteRequest) ProtoMessage()               {}
-func (*BatchDeleteRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
+func (x *BatchDeleteRequest) Reset() {
+	*x = BatchDeleteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
 
-func (m *BatchDeleteRequest) GetFileIds() []string {
-	if m != nil {
-		return m.FileIds
+func (x *BatchDeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*BatchDeleteRequest) ProtoMessage() {}
+
+func (x *BatchDeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BatchDeleteRequest.ProtoReflect.Descriptor instead.
+func (*BatchDeleteRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *BatchDeleteRequest) GetFileIds() []string {
+	if x != nil {
+		return x.FileIds
 	}
 	return nil
 }
 
+func (x *BatchDeleteRequest) GetSkipCookieCheck() bool {
+	if x != nil {
+		return x.SkipCookieCheck
+	}
+	return false
+}
+
 type BatchDeleteResponse struct {
-	Results []*DeleteResult `protobuf:"bytes,1,rep,name=results" json:"results,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Results []*DeleteResult `protobuf:"bytes,1,rep,name=results,proto3" json:"results,omitempty"`
+}
+
+func (x *BatchDeleteResponse) Reset() {
+	*x = BatchDeleteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *BatchDeleteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *BatchDeleteResponse) Reset()                    { *m = BatchDeleteResponse{} }
-func (m *BatchDeleteResponse) String() string            { return proto.CompactTextString(m) }
-func (*BatchDeleteResponse) ProtoMessage()               {}
-func (*BatchDeleteResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
+func (*BatchDeleteResponse) ProtoMessage() {}
 
-func (m *BatchDeleteResponse) GetResults() []*DeleteResult {
-	if m != nil {
-		return m.Results
+func (x *BatchDeleteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use BatchDeleteResponse.ProtoReflect.Descriptor instead.
+func (*BatchDeleteResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *BatchDeleteResponse) GetResults() []*DeleteResult {
+	if x != nil {
+		return x.Results
 	}
 	return nil
 }
 
 type DeleteResult struct {
-	FileId string `protobuf:"bytes,1,opt,name=file_id,json=fileId" json:"file_id,omitempty"`
-	Status int32  `protobuf:"varint,2,opt,name=status" json:"status,omitempty"`
-	Error  string `protobuf:"bytes,3,opt,name=error" json:"error,omitempty"`
-	Size   uint32 `protobuf:"varint,4,opt,name=size" json:"size,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FileId  string `protobuf:"bytes,1,opt,name=file_id,json=fileId,proto3" json:"file_id,omitempty"`
+	Status  int32  `protobuf:"varint,2,opt,name=status,proto3" json:"status,omitempty"`
+	Error   string `protobuf:"bytes,3,opt,name=error,proto3" json:"error,omitempty"`
+	Size    uint32 `protobuf:"varint,4,opt,name=size,proto3" json:"size,omitempty"`
+	Version uint32 `protobuf:"varint,5,opt,name=version,proto3" json:"version,omitempty"`
 }
 
-func (m *DeleteResult) Reset()                    { *m = DeleteResult{} }
-func (m *DeleteResult) String() string            { return proto.CompactTextString(m) }
-func (*DeleteResult) ProtoMessage()               {}
-func (*DeleteResult) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
+func (x *DeleteResult) Reset() {
+	*x = DeleteResult{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
 
-func (m *DeleteResult) GetFileId() string {
-	if m != nil {
-		return m.FileId
+func (x *DeleteResult) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteResult) ProtoMessage() {}
+
+func (x *DeleteResult) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteResult.ProtoReflect.Descriptor instead.
+func (*DeleteResult) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *DeleteResult) GetFileId() string {
+	if x != nil {
+		return x.FileId
 	}
 	return ""
 }
 
-func (m *DeleteResult) GetStatus() int32 {
-	if m != nil {
-		return m.Status
+func (x *DeleteResult) GetStatus() int32 {
+	if x != nil {
+		return x.Status
 	}
 	return 0
 }
 
-func (m *DeleteResult) GetError() string {
-	if m != nil {
-		return m.Error
+func (x *DeleteResult) GetError() string {
+	if x != nil {
+		return x.Error
 	}
 	return ""
 }
 
-func (m *DeleteResult) GetSize() uint32 {
-	if m != nil {
-		return m.Size
+func (x *DeleteResult) GetSize() uint32 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
+func (x *DeleteResult) GetVersion() uint32 {
+	if x != nil {
+		return x.Version
 	}
 	return 0
 }
 
 type Empty struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *Empty) Reset() {
+	*x = Empty{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Empty) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *Empty) Reset()                    { *m = Empty{} }
-func (m *Empty) String() string            { return proto.CompactTextString(m) }
-func (*Empty) ProtoMessage()               {}
-func (*Empty) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
+func (*Empty) ProtoMessage() {}
+
+func (x *Empty) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Empty.ProtoReflect.Descriptor instead.
+func (*Empty) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{3}
+}
 
 type VacuumVolumeCheckRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VacuumVolumeCheckRequest) Reset() {
+	*x = VacuumVolumeCheckRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCheckRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VacuumVolumeCheckRequest) ProtoMessage() {}
+
+func (x *VacuumVolumeCheckRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VacuumVolumeCheckRequest) Reset()                    { *m = VacuumVolumeCheckRequest{} }
-func (m *VacuumVolumeCheckRequest) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCheckRequest) ProtoMessage()               {}
-func (*VacuumVolumeCheckRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
+// Deprecated: Use VacuumVolumeCheckRequest.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCheckRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{4}
+}
 
-func (m *VacuumVolumeCheckRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VacuumVolumeCheckRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
 type VacuumVolumeCheckResponse struct {
-	GarbageRatio float64 `protobuf:"fixed64,1,opt,name=garbage_ratio,json=garbageRatio" json:"garbage_ratio,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	GarbageRatio float64 `protobuf:"fixed64,1,opt,name=garbage_ratio,json=garbageRatio,proto3" json:"garbage_ratio,omitempty"`
+}
+
+func (x *VacuumVolumeCheckResponse) Reset() {
+	*x = VacuumVolumeCheckResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCheckResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VacuumVolumeCheckResponse) ProtoMessage() {}
+
+func (x *VacuumVolumeCheckResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VacuumVolumeCheckResponse) Reset()                    { *m = VacuumVolumeCheckResponse{} }
-func (m *VacuumVolumeCheckResponse) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCheckResponse) ProtoMessage()               {}
-func (*VacuumVolumeCheckResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
+// Deprecated: Use VacuumVolumeCheckResponse.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCheckResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{5}
+}
 
-func (m *VacuumVolumeCheckResponse) GetGarbageRatio() float64 {
-	if m != nil {
-		return m.GarbageRatio
+func (x *VacuumVolumeCheckResponse) GetGarbageRatio() float64 {
+	if x != nil {
+		return x.GarbageRatio
 	}
 	return 0
 }
 
 type VacuumVolumeCompactRequest struct {
-	VolumdId    uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
-	Preallocate int64  `protobuf:"varint,2,opt,name=preallocate" json:"preallocate,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId    uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Preallocate int64  `protobuf:"varint,2,opt,name=preallocate,proto3" json:"preallocate,omitempty"`
+}
+
+func (x *VacuumVolumeCompactRequest) Reset() {
+	*x = VacuumVolumeCompactRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCompactRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VacuumVolumeCompactRequest) ProtoMessage() {}
+
+func (x *VacuumVolumeCompactRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VacuumVolumeCompactRequest) Reset()                    { *m = VacuumVolumeCompactRequest{} }
-func (m *VacuumVolumeCompactRequest) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCompactRequest) ProtoMessage()               {}
-func (*VacuumVolumeCompactRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
+// Deprecated: Use VacuumVolumeCompactRequest.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCompactRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{6}
+}
 
-func (m *VacuumVolumeCompactRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VacuumVolumeCompactRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-func (m *VacuumVolumeCompactRequest) GetPreallocate() int64 {
-	if m != nil {
-		return m.Preallocate
+func (x *VacuumVolumeCompactRequest) GetPreallocate() int64 {
+	if x != nil {
+		return x.Preallocate
 	}
 	return 0
 }
 
 type VacuumVolumeCompactResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VacuumVolumeCompactResponse) Reset() {
+	*x = VacuumVolumeCompactResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCompactResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VacuumVolumeCompactResponse) ProtoMessage() {}
+
+func (x *VacuumVolumeCompactResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VacuumVolumeCompactResponse) Reset()                    { *m = VacuumVolumeCompactResponse{} }
-func (m *VacuumVolumeCompactResponse) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCompactResponse) ProtoMessage()               {}
-func (*VacuumVolumeCompactResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
+// Deprecated: Use VacuumVolumeCompactResponse.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCompactResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{7}
+}
 
 type VacuumVolumeCommitRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VacuumVolumeCommitRequest) Reset() {
+	*x = VacuumVolumeCommitRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCommitRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VacuumVolumeCommitRequest) ProtoMessage() {}
+
+func (x *VacuumVolumeCommitRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VacuumVolumeCommitRequest) Reset()                    { *m = VacuumVolumeCommitRequest{} }
-func (m *VacuumVolumeCommitRequest) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCommitRequest) ProtoMessage()               {}
-func (*VacuumVolumeCommitRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} }
+// Deprecated: Use VacuumVolumeCommitRequest.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCommitRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{8}
+}
 
-func (m *VacuumVolumeCommitRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VacuumVolumeCommitRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
 type VacuumVolumeCommitResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	IsReadOnly bool `protobuf:"varint,1,opt,name=is_read_only,json=isReadOnly,proto3" json:"is_read_only,omitempty"`
+}
+
+func (x *VacuumVolumeCommitResponse) Reset() {
+	*x = VacuumVolumeCommitResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCommitResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VacuumVolumeCommitResponse) ProtoMessage() {}
+
+func (x *VacuumVolumeCommitResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[9]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VacuumVolumeCommitResponse.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCommitResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{9}
 }
 
-func (m *VacuumVolumeCommitResponse) Reset()                    { *m = VacuumVolumeCommitResponse{} }
-func (m *VacuumVolumeCommitResponse) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCommitResponse) ProtoMessage()               {}
-func (*VacuumVolumeCommitResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{9} }
+func (x *VacuumVolumeCommitResponse) GetIsReadOnly() bool {
+	if x != nil {
+		return x.IsReadOnly
+	}
+	return false
+}
 
 type VacuumVolumeCleanupRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VacuumVolumeCleanupRequest) Reset() {
+	*x = VacuumVolumeCleanupRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCleanupRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *VacuumVolumeCleanupRequest) Reset()                    { *m = VacuumVolumeCleanupRequest{} }
-func (m *VacuumVolumeCleanupRequest) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCleanupRequest) ProtoMessage()               {}
-func (*VacuumVolumeCleanupRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{10} }
+func (*VacuumVolumeCleanupRequest) ProtoMessage() {}
 
-func (m *VacuumVolumeCleanupRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VacuumVolumeCleanupRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VacuumVolumeCleanupRequest.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCleanupRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{10}
+}
+
+func (x *VacuumVolumeCleanupRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
 type VacuumVolumeCleanupResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VacuumVolumeCleanupResponse) Reset() {
+	*x = VacuumVolumeCleanupResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VacuumVolumeCleanupResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VacuumVolumeCleanupResponse) ProtoMessage() {}
+
+func (x *VacuumVolumeCleanupResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VacuumVolumeCleanupResponse) Reset()                    { *m = VacuumVolumeCleanupResponse{} }
-func (m *VacuumVolumeCleanupResponse) String() string            { return proto.CompactTextString(m) }
-func (*VacuumVolumeCleanupResponse) ProtoMessage()               {}
-func (*VacuumVolumeCleanupResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{11} }
+// Deprecated: Use VacuumVolumeCleanupResponse.ProtoReflect.Descriptor instead.
+func (*VacuumVolumeCleanupResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{11}
+}
 
 type DeleteCollectionRequest struct {
-	Collection string `protobuf:"bytes,1,opt,name=collection" json:"collection,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Collection string `protobuf:"bytes,1,opt,name=collection,proto3" json:"collection,omitempty"`
+}
+
+func (x *DeleteCollectionRequest) Reset() {
+	*x = DeleteCollectionRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteCollectionRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteCollectionRequest) ProtoMessage() {}
+
+func (x *DeleteCollectionRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *DeleteCollectionRequest) Reset()                    { *m = DeleteCollectionRequest{} }
-func (m *DeleteCollectionRequest) String() string            { return proto.CompactTextString(m) }
-func (*DeleteCollectionRequest) ProtoMessage()               {}
-func (*DeleteCollectionRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{12} }
+// Deprecated: Use DeleteCollectionRequest.ProtoReflect.Descriptor instead.
+func (*DeleteCollectionRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{12}
+}
 
-func (m *DeleteCollectionRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *DeleteCollectionRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
 type DeleteCollectionResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *DeleteCollectionResponse) Reset() {
+	*x = DeleteCollectionResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteCollectionResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteCollectionResponse) ProtoMessage() {}
+
+func (x *DeleteCollectionResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteCollectionResponse.ProtoReflect.Descriptor instead.
+func (*DeleteCollectionResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{13}
+}
+
+type AllocateVolumeRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId           uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection         string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Preallocate        int64  `protobuf:"varint,3,opt,name=preallocate,proto3" json:"preallocate,omitempty"`
+	Replication        string `protobuf:"bytes,4,opt,name=replication,proto3" json:"replication,omitempty"`
+	Ttl                string `protobuf:"bytes,5,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	MemoryMapMaxSizeMb uint32 `protobuf:"varint,6,opt,name=memory_map_max_size_mb,json=memoryMapMaxSizeMb,proto3" json:"memory_map_max_size_mb,omitempty"`
+}
+
+func (x *AllocateVolumeRequest) Reset() {
+	*x = AllocateVolumeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AllocateVolumeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *DeleteCollectionResponse) Reset()                    { *m = DeleteCollectionResponse{} }
-func (m *DeleteCollectionResponse) String() string            { return proto.CompactTextString(m) }
-func (*DeleteCollectionResponse) ProtoMessage()               {}
-func (*DeleteCollectionResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{13} }
+func (*AllocateVolumeRequest) ProtoMessage() {}
 
-type AssignVolumeRequest struct {
-	VolumdId    uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
-	Collection  string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
-	Preallocate int64  `protobuf:"varint,3,opt,name=preallocate" json:"preallocate,omitempty"`
-	Replication string `protobuf:"bytes,4,opt,name=replication" json:"replication,omitempty"`
-	Ttl         string `protobuf:"bytes,5,opt,name=ttl" json:"ttl,omitempty"`
+func (x *AllocateVolumeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *AssignVolumeRequest) Reset()                    { *m = AssignVolumeRequest{} }
-func (m *AssignVolumeRequest) String() string            { return proto.CompactTextString(m) }
-func (*AssignVolumeRequest) ProtoMessage()               {}
-func (*AssignVolumeRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{14} }
+// Deprecated: Use AllocateVolumeRequest.ProtoReflect.Descriptor instead.
+func (*AllocateVolumeRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{14}
+}
 
-func (m *AssignVolumeRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *AllocateVolumeRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-func (m *AssignVolumeRequest) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *AllocateVolumeRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *AssignVolumeRequest) GetPreallocate() int64 {
-	if m != nil {
-		return m.Preallocate
+func (x *AllocateVolumeRequest) GetPreallocate() int64 {
+	if x != nil {
+		return x.Preallocate
 	}
 	return 0
 }
 
-func (m *AssignVolumeRequest) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *AllocateVolumeRequest) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *AssignVolumeRequest) GetTtl() string {
-	if m != nil {
-		return m.Ttl
+func (x *AllocateVolumeRequest) GetTtl() string {
+	if x != nil {
+		return x.Ttl
 	}
 	return ""
 }
 
-type AssignVolumeResponse struct {
+func (x *AllocateVolumeRequest) GetMemoryMapMaxSizeMb() uint32 {
+	if x != nil {
+		return x.MemoryMapMaxSizeMb
+	}
+	return 0
+}
+
+type AllocateVolumeResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *AllocateVolumeResponse) Reset() {
+	*x = AllocateVolumeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[15]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *AllocateVolumeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*AllocateVolumeResponse) ProtoMessage() {}
+
+func (x *AllocateVolumeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[15]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *AssignVolumeResponse) Reset()                    { *m = AssignVolumeResponse{} }
-func (m *AssignVolumeResponse) String() string            { return proto.CompactTextString(m) }
-func (*AssignVolumeResponse) ProtoMessage()               {}
-func (*AssignVolumeResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{15} }
+// Deprecated: Use AllocateVolumeResponse.ProtoReflect.Descriptor instead.
+func (*AllocateVolumeResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{15}
+}
 
 type VolumeSyncStatusRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VolumeSyncStatusRequest) Reset() {
+	*x = VolumeSyncStatusRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[16]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeSyncStatusRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeSyncStatusRequest) ProtoMessage() {}
+
+func (x *VolumeSyncStatusRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[16]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VolumeSyncStatusRequest) Reset()                    { *m = VolumeSyncStatusRequest{} }
-func (m *VolumeSyncStatusRequest) String() string            { return proto.CompactTextString(m) }
-func (*VolumeSyncStatusRequest) ProtoMessage()               {}
-func (*VolumeSyncStatusRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{16} }
+// Deprecated: Use VolumeSyncStatusRequest.ProtoReflect.Descriptor instead.
+func (*VolumeSyncStatusRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{16}
+}
 
-func (m *VolumeSyncStatusRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VolumeSyncStatusRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
 type VolumeSyncStatusResponse struct {
-	VolumdId        uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
-	Collection      string `protobuf:"bytes,2,opt,name=collection" json:"collection,omitempty"`
-	Replication     string `protobuf:"bytes,4,opt,name=replication" json:"replication,omitempty"`
-	Ttl             string `protobuf:"bytes,5,opt,name=ttl" json:"ttl,omitempty"`
-	TailOffset      uint64 `protobuf:"varint,6,opt,name=tail_offset,json=tailOffset" json:"tail_offset,omitempty"`
-	CompactRevision uint32 `protobuf:"varint,7,opt,name=compact_revision,json=compactRevision" json:"compact_revision,omitempty"`
-	IdxFileSize     uint64 `protobuf:"varint,8,opt,name=idx_file_size,json=idxFileSize" json:"idx_file_size,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId        uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection      string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Replication     string `protobuf:"bytes,4,opt,name=replication,proto3" json:"replication,omitempty"`
+	Ttl             string `protobuf:"bytes,5,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	TailOffset      uint64 `protobuf:"varint,6,opt,name=tail_offset,json=tailOffset,proto3" json:"tail_offset,omitempty"`
+	CompactRevision uint32 `protobuf:"varint,7,opt,name=compact_revision,json=compactRevision,proto3" json:"compact_revision,omitempty"`
+	IdxFileSize     uint64 `protobuf:"varint,8,opt,name=idx_file_size,json=idxFileSize,proto3" json:"idx_file_size,omitempty"`
+}
+
+func (x *VolumeSyncStatusResponse) Reset() {
+	*x = VolumeSyncStatusResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[17]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeSyncStatusResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeSyncStatusResponse) ProtoMessage() {}
+
+func (x *VolumeSyncStatusResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[17]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VolumeSyncStatusResponse) Reset()                    { *m = VolumeSyncStatusResponse{} }
-func (m *VolumeSyncStatusResponse) String() string            { return proto.CompactTextString(m) }
-func (*VolumeSyncStatusResponse) ProtoMessage()               {}
-func (*VolumeSyncStatusResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{17} }
+// Deprecated: Use VolumeSyncStatusResponse.ProtoReflect.Descriptor instead.
+func (*VolumeSyncStatusResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{17}
+}
 
-func (m *VolumeSyncStatusResponse) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VolumeSyncStatusResponse) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-func (m *VolumeSyncStatusResponse) GetCollection() string {
-	if m != nil {
-		return m.Collection
+func (x *VolumeSyncStatusResponse) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-func (m *VolumeSyncStatusResponse) GetReplication() string {
-	if m != nil {
-		return m.Replication
+func (x *VolumeSyncStatusResponse) GetReplication() string {
+	if x != nil {
+		return x.Replication
 	}
 	return ""
 }
 
-func (m *VolumeSyncStatusResponse) GetTtl() string {
-	if m != nil {
-		return m.Ttl
+func (x *VolumeSyncStatusResponse) GetTtl() string {
+	if x != nil {
+		return x.Ttl
 	}
 	return ""
 }
 
-func (m *VolumeSyncStatusResponse) GetTailOffset() uint64 {
-	if m != nil {
-		return m.TailOffset
+func (x *VolumeSyncStatusResponse) GetTailOffset() uint64 {
+	if x != nil {
+		return x.TailOffset
 	}
 	return 0
 }
 
-func (m *VolumeSyncStatusResponse) GetCompactRevision() uint32 {
-	if m != nil {
-		return m.CompactRevision
+func (x *VolumeSyncStatusResponse) GetCompactRevision() uint32 {
+	if x != nil {
+		return x.CompactRevision
 	}
 	return 0
 }
 
-func (m *VolumeSyncStatusResponse) GetIdxFileSize() uint64 {
-	if m != nil {
-		return m.IdxFileSize
+func (x *VolumeSyncStatusResponse) GetIdxFileSize() uint64 {
+	if x != nil {
+		return x.IdxFileSize
 	}
 	return 0
 }
 
-type VolumeSyncIndexRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+type VolumeIncrementalCopyRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	SinceNs  uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs,proto3" json:"since_ns,omitempty"`
+}
+
+func (x *VolumeIncrementalCopyRequest) Reset() {
+	*x = VolumeIncrementalCopyRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[18]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeIncrementalCopyRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeIncrementalCopyRequest) ProtoMessage() {}
+
+func (x *VolumeIncrementalCopyRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[18]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeIncrementalCopyRequest.ProtoReflect.Descriptor instead.
+func (*VolumeIncrementalCopyRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{18}
 }
 
-func (m *VolumeSyncIndexRequest) Reset()                    { *m = VolumeSyncIndexRequest{} }
-func (m *VolumeSyncIndexRequest) String() string            { return proto.CompactTextString(m) }
-func (*VolumeSyncIndexRequest) ProtoMessage()               {}
-func (*VolumeSyncIndexRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{18} }
+func (x *VolumeIncrementalCopyRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
 
-func (m *VolumeSyncIndexRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VolumeIncrementalCopyRequest) GetSinceNs() uint64 {
+	if x != nil {
+		return x.SinceNs
 	}
 	return 0
 }
 
-type VolumeSyncIndexResponse struct {
-	IndexFileContent []byte `protobuf:"bytes,1,opt,name=index_file_content,json=indexFileContent,proto3" json:"index_file_content,omitempty"`
+type VolumeIncrementalCopyResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FileContent []byte `protobuf:"bytes,1,opt,name=file_content,json=fileContent,proto3" json:"file_content,omitempty"`
+}
+
+func (x *VolumeIncrementalCopyResponse) Reset() {
+	*x = VolumeIncrementalCopyResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[19]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeIncrementalCopyResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeIncrementalCopyResponse) ProtoMessage() {}
+
+func (x *VolumeIncrementalCopyResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[19]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VolumeSyncIndexResponse) Reset()                    { *m = VolumeSyncIndexResponse{} }
-func (m *VolumeSyncIndexResponse) String() string            { return proto.CompactTextString(m) }
-func (*VolumeSyncIndexResponse) ProtoMessage()               {}
-func (*VolumeSyncIndexResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19} }
+// Deprecated: Use VolumeIncrementalCopyResponse.ProtoReflect.Descriptor instead.
+func (*VolumeIncrementalCopyResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{19}
+}
 
-func (m *VolumeSyncIndexResponse) GetIndexFileContent() []byte {
-	if m != nil {
-		return m.IndexFileContent
+func (x *VolumeIncrementalCopyResponse) GetFileContent() []byte {
+	if x != nil {
+		return x.FileContent
 	}
 	return nil
 }
 
-type VolumeSyncDataRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
-	Revision uint32 `protobuf:"varint,2,opt,name=revision" json:"revision,omitempty"`
-	Offset   uint32 `protobuf:"varint,3,opt,name=offset" json:"offset,omitempty"`
-	Size     uint32 `protobuf:"varint,4,opt,name=size" json:"size,omitempty"`
-	NeedleId string `protobuf:"bytes,5,opt,name=needle_id,json=needleId" json:"needle_id,omitempty"`
+type VolumeMountRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VolumeMountRequest) Reset() {
+	*x = VolumeMountRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[20]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMountRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMountRequest) ProtoMessage() {}
+
+func (x *VolumeMountRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[20]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VolumeSyncDataRequest) Reset()                    { *m = VolumeSyncDataRequest{} }
-func (m *VolumeSyncDataRequest) String() string            { return proto.CompactTextString(m) }
-func (*VolumeSyncDataRequest) ProtoMessage()               {}
-func (*VolumeSyncDataRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{20} }
+// Deprecated: Use VolumeMountRequest.ProtoReflect.Descriptor instead.
+func (*VolumeMountRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{20}
+}
 
-func (m *VolumeSyncDataRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VolumeMountRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-func (m *VolumeSyncDataRequest) GetRevision() uint32 {
-	if m != nil {
-		return m.Revision
+type VolumeMountResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeMountResponse) Reset() {
+	*x = VolumeMountResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[21]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMountResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMountResponse) ProtoMessage() {}
+
+func (x *VolumeMountResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[21]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeMountResponse.ProtoReflect.Descriptor instead.
+func (*VolumeMountResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{21}
+}
+
+type VolumeUnmountRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VolumeUnmountRequest) Reset() {
+	*x = VolumeUnmountRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[22]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeUnmountRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeUnmountRequest) ProtoMessage() {}
+
+func (x *VolumeUnmountRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[22]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeUnmountRequest.ProtoReflect.Descriptor instead.
+func (*VolumeUnmountRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{22}
+}
+
+func (x *VolumeUnmountRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+type VolumeUnmountResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeUnmountResponse) Reset() {
+	*x = VolumeUnmountResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[23]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeUnmountResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeUnmountResponse) ProtoMessage() {}
+
+func (x *VolumeUnmountResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[23]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeUnmountResponse.ProtoReflect.Descriptor instead.
+func (*VolumeUnmountResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{23}
+}
+
+type VolumeDeleteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VolumeDeleteRequest) Reset() {
+	*x = VolumeDeleteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[24]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeDeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeDeleteRequest) ProtoMessage() {}
+
+func (x *VolumeDeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[24]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeDeleteRequest.ProtoReflect.Descriptor instead.
+func (*VolumeDeleteRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{24}
+}
+
+func (x *VolumeDeleteRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+type VolumeDeleteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeDeleteResponse) Reset() {
+	*x = VolumeDeleteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[25]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeDeleteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeDeleteResponse) ProtoMessage() {}
+
+func (x *VolumeDeleteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[25]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeDeleteResponse.ProtoReflect.Descriptor instead.
+func (*VolumeDeleteResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{25}
+}
+
+type VolumeMarkReadonlyRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VolumeMarkReadonlyRequest) Reset() {
+	*x = VolumeMarkReadonlyRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[26]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMarkReadonlyRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMarkReadonlyRequest) ProtoMessage() {}
+
+func (x *VolumeMarkReadonlyRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[26]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeMarkReadonlyRequest.ProtoReflect.Descriptor instead.
+func (*VolumeMarkReadonlyRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{26}
+}
+
+func (x *VolumeMarkReadonlyRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+type VolumeMarkReadonlyResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeMarkReadonlyResponse) Reset() {
+	*x = VolumeMarkReadonlyResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[27]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMarkReadonlyResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMarkReadonlyResponse) ProtoMessage() {}
+
+func (x *VolumeMarkReadonlyResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[27]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeMarkReadonlyResponse.ProtoReflect.Descriptor instead.
+func (*VolumeMarkReadonlyResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{27}
+}
+
+type VolumeConfigureRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId    uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Replication string `protobuf:"bytes,2,opt,name=replication,proto3" json:"replication,omitempty"`
+}
+
+func (x *VolumeConfigureRequest) Reset() {
+	*x = VolumeConfigureRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[28]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeConfigureRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeConfigureRequest) ProtoMessage() {}
+
+func (x *VolumeConfigureRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[28]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeConfigureRequest.ProtoReflect.Descriptor instead.
+func (*VolumeConfigureRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{28}
+}
+
+func (x *VolumeConfigureRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeConfigureRequest) GetReplication() string {
+	if x != nil {
+		return x.Replication
+	}
+	return ""
+}
+
+type VolumeConfigureResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Error string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *VolumeConfigureResponse) Reset() {
+	*x = VolumeConfigureResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[29]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeConfigureResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeConfigureResponse) ProtoMessage() {}
+
+func (x *VolumeConfigureResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[29]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeConfigureResponse.ProtoReflect.Descriptor instead.
+func (*VolumeConfigureResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{29}
+}
+
+func (x *VolumeConfigureResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
+type VolumeCopyRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId       uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection     string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	Replication    string `protobuf:"bytes,3,opt,name=replication,proto3" json:"replication,omitempty"`
+	Ttl            string `protobuf:"bytes,4,opt,name=ttl,proto3" json:"ttl,omitempty"`
+	SourceDataNode string `protobuf:"bytes,5,opt,name=source_data_node,json=sourceDataNode,proto3" json:"source_data_node,omitempty"`
+}
+
+func (x *VolumeCopyRequest) Reset() {
+	*x = VolumeCopyRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[30]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeCopyRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeCopyRequest) ProtoMessage() {}
+
+func (x *VolumeCopyRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[30]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeCopyRequest.ProtoReflect.Descriptor instead.
+func (*VolumeCopyRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{30}
+}
+
+func (x *VolumeCopyRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeCopyRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeCopyRequest) GetReplication() string {
+	if x != nil {
+		return x.Replication
+	}
+	return ""
+}
+
+func (x *VolumeCopyRequest) GetTtl() string {
+	if x != nil {
+		return x.Ttl
+	}
+	return ""
+}
+
+func (x *VolumeCopyRequest) GetSourceDataNode() string {
+	if x != nil {
+		return x.SourceDataNode
+	}
+	return ""
+}
+
+type VolumeCopyResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	LastAppendAtNs uint64 `protobuf:"varint,1,opt,name=last_append_at_ns,json=lastAppendAtNs,proto3" json:"last_append_at_ns,omitempty"`
+}
+
+func (x *VolumeCopyResponse) Reset() {
+	*x = VolumeCopyResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[31]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeCopyResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeCopyResponse) ProtoMessage() {}
+
+func (x *VolumeCopyResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[31]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeCopyResponse.ProtoReflect.Descriptor instead.
+func (*VolumeCopyResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{31}
+}
+
+func (x *VolumeCopyResponse) GetLastAppendAtNs() uint64 {
+	if x != nil {
+		return x.LastAppendAtNs
+	}
+	return 0
+}
+
+type CopyFileRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId                 uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Ext                      string `protobuf:"bytes,2,opt,name=ext,proto3" json:"ext,omitempty"`
+	CompactionRevision       uint32 `protobuf:"varint,3,opt,name=compaction_revision,json=compactionRevision,proto3" json:"compaction_revision,omitempty"`
+	StopOffset               uint64 `protobuf:"varint,4,opt,name=stop_offset,json=stopOffset,proto3" json:"stop_offset,omitempty"`
+	Collection               string `protobuf:"bytes,5,opt,name=collection,proto3" json:"collection,omitempty"`
+	IsEcVolume               bool   `protobuf:"varint,6,opt,name=is_ec_volume,json=isEcVolume,proto3" json:"is_ec_volume,omitempty"`
+	IgnoreSourceFileNotFound bool   `protobuf:"varint,7,opt,name=ignore_source_file_not_found,json=ignoreSourceFileNotFound,proto3" json:"ignore_source_file_not_found,omitempty"`
+}
+
+func (x *CopyFileRequest) Reset() {
+	*x = CopyFileRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[32]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CopyFileRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CopyFileRequest) ProtoMessage() {}
+
+func (x *CopyFileRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[32]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CopyFileRequest.ProtoReflect.Descriptor instead.
+func (*CopyFileRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{32}
+}
+
+func (x *CopyFileRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-func (m *VolumeSyncDataRequest) GetOffset() uint32 {
-	if m != nil {
-		return m.Offset
+func (x *CopyFileRequest) GetExt() string {
+	if x != nil {
+		return x.Ext
+	}
+	return ""
+}
+
+func (x *CopyFileRequest) GetCompactionRevision() uint32 {
+	if x != nil {
+		return x.CompactionRevision
 	}
 	return 0
 }
 
-func (m *VolumeSyncDataRequest) GetSize() uint32 {
-	if m != nil {
-		return m.Size
+func (x *CopyFileRequest) GetStopOffset() uint64 {
+	if x != nil {
+		return x.StopOffset
 	}
 	return 0
 }
 
-func (m *VolumeSyncDataRequest) GetNeedleId() string {
-	if m != nil {
-		return m.NeedleId
+func (x *CopyFileRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
 	}
 	return ""
 }
 
-type VolumeSyncDataResponse struct {
+func (x *CopyFileRequest) GetIsEcVolume() bool {
+	if x != nil {
+		return x.IsEcVolume
+	}
+	return false
+}
+
+func (x *CopyFileRequest) GetIgnoreSourceFileNotFound() bool {
+	if x != nil {
+		return x.IgnoreSourceFileNotFound
+	}
+	return false
+}
+
+type CopyFileResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
 	FileContent []byte `protobuf:"bytes,1,opt,name=file_content,json=fileContent,proto3" json:"file_content,omitempty"`
 }
 
-func (m *VolumeSyncDataResponse) Reset()                    { *m = VolumeSyncDataResponse{} }
-func (m *VolumeSyncDataResponse) String() string            { return proto.CompactTextString(m) }
-func (*VolumeSyncDataResponse) ProtoMessage()               {}
-func (*VolumeSyncDataResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{21} }
+func (x *CopyFileResponse) Reset() {
+	*x = CopyFileResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[33]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *CopyFileResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CopyFileResponse) ProtoMessage() {}
+
+func (x *CopyFileResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[33]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CopyFileResponse.ProtoReflect.Descriptor instead.
+func (*CopyFileResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{33}
+}
 
-func (m *VolumeSyncDataResponse) GetFileContent() []byte {
-	if m != nil {
-		return m.FileContent
+func (x *CopyFileResponse) GetFileContent() []byte {
+	if x != nil {
+		return x.FileContent
 	}
 	return nil
 }
 
-type VolumeMountRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+type VolumeTailSenderRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId           uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	SinceNs            uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs,proto3" json:"since_ns,omitempty"`
+	IdleTimeoutSeconds uint32 `protobuf:"varint,3,opt,name=idle_timeout_seconds,json=idleTimeoutSeconds,proto3" json:"idle_timeout_seconds,omitempty"`
+}
+
+func (x *VolumeTailSenderRequest) Reset() {
+	*x = VolumeTailSenderRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[34]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTailSenderRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTailSenderRequest) ProtoMessage() {}
+
+func (x *VolumeTailSenderRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[34]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeTailSenderRequest.ProtoReflect.Descriptor instead.
+func (*VolumeTailSenderRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{34}
 }
 
-func (m *VolumeMountRequest) Reset()                    { *m = VolumeMountRequest{} }
-func (m *VolumeMountRequest) String() string            { return proto.CompactTextString(m) }
-func (*VolumeMountRequest) ProtoMessage()               {}
-func (*VolumeMountRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{22} }
+func (x *VolumeTailSenderRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
 
-func (m *VolumeMountRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VolumeTailSenderRequest) GetSinceNs() uint64 {
+	if x != nil {
+		return x.SinceNs
 	}
 	return 0
 }
 
-type VolumeMountResponse struct {
+func (x *VolumeTailSenderRequest) GetIdleTimeoutSeconds() uint32 {
+	if x != nil {
+		return x.IdleTimeoutSeconds
+	}
+	return 0
 }
 
-func (m *VolumeMountResponse) Reset()                    { *m = VolumeMountResponse{} }
-func (m *VolumeMountResponse) String() string            { return proto.CompactTextString(m) }
-func (*VolumeMountResponse) ProtoMessage()               {}
-func (*VolumeMountResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{23} }
+type VolumeTailSenderResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
 
-type VolumeUnmountRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+	NeedleHeader []byte `protobuf:"bytes,1,opt,name=needle_header,json=needleHeader,proto3" json:"needle_header,omitempty"`
+	NeedleBody   []byte `protobuf:"bytes,2,opt,name=needle_body,json=needleBody,proto3" json:"needle_body,omitempty"`
+	IsLastChunk  bool   `protobuf:"varint,3,opt,name=is_last_chunk,json=isLastChunk,proto3" json:"is_last_chunk,omitempty"`
+}
+
+func (x *VolumeTailSenderResponse) Reset() {
+	*x = VolumeTailSenderResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[35]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTailSenderResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTailSenderResponse) ProtoMessage() {}
+
+func (x *VolumeTailSenderResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[35]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *VolumeUnmountRequest) Reset()                    { *m = VolumeUnmountRequest{} }
-func (m *VolumeUnmountRequest) String() string            { return proto.CompactTextString(m) }
-func (*VolumeUnmountRequest) ProtoMessage()               {}
-func (*VolumeUnmountRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{24} }
+// Deprecated: Use VolumeTailSenderResponse.ProtoReflect.Descriptor instead.
+func (*VolumeTailSenderResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{35}
+}
 
-func (m *VolumeUnmountRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+func (x *VolumeTailSenderResponse) GetNeedleHeader() []byte {
+	if x != nil {
+		return x.NeedleHeader
+	}
+	return nil
+}
+
+func (x *VolumeTailSenderResponse) GetNeedleBody() []byte {
+	if x != nil {
+		return x.NeedleBody
+	}
+	return nil
+}
+
+func (x *VolumeTailSenderResponse) GetIsLastChunk() bool {
+	if x != nil {
+		return x.IsLastChunk
+	}
+	return false
+}
+
+type VolumeTailReceiverRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId           uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	SinceNs            uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs,proto3" json:"since_ns,omitempty"`
+	IdleTimeoutSeconds uint32 `protobuf:"varint,3,opt,name=idle_timeout_seconds,json=idleTimeoutSeconds,proto3" json:"idle_timeout_seconds,omitempty"`
+	SourceVolumeServer string `protobuf:"bytes,4,opt,name=source_volume_server,json=sourceVolumeServer,proto3" json:"source_volume_server,omitempty"`
+}
+
+func (x *VolumeTailReceiverRequest) Reset() {
+	*x = VolumeTailReceiverRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[36]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTailReceiverRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTailReceiverRequest) ProtoMessage() {}
+
+func (x *VolumeTailReceiverRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[36]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeTailReceiverRequest.ProtoReflect.Descriptor instead.
+func (*VolumeTailReceiverRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{36}
+}
+
+func (x *VolumeTailReceiverRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-type VolumeUnmountResponse struct {
+func (x *VolumeTailReceiverRequest) GetSinceNs() uint64 {
+	if x != nil {
+		return x.SinceNs
+	}
+	return 0
 }
 
-func (m *VolumeUnmountResponse) Reset()                    { *m = VolumeUnmountResponse{} }
-func (m *VolumeUnmountResponse) String() string            { return proto.CompactTextString(m) }
-func (*VolumeUnmountResponse) ProtoMessage()               {}
-func (*VolumeUnmountResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{25} }
+func (x *VolumeTailReceiverRequest) GetIdleTimeoutSeconds() uint32 {
+	if x != nil {
+		return x.IdleTimeoutSeconds
+	}
+	return 0
+}
 
-type VolumeDeleteRequest struct {
-	VolumdId uint32 `protobuf:"varint,1,opt,name=volumd_id,json=volumdId" json:"volumd_id,omitempty"`
+func (x *VolumeTailReceiverRequest) GetSourceVolumeServer() string {
+	if x != nil {
+		return x.SourceVolumeServer
+	}
+	return ""
+}
+
+type VolumeTailReceiverResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeTailReceiverResponse) Reset() {
+	*x = VolumeTailReceiverResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[37]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTailReceiverResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTailReceiverResponse) ProtoMessage() {}
+
+func (x *VolumeTailReceiverResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[37]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeTailReceiverResponse.ProtoReflect.Descriptor instead.
+func (*VolumeTailReceiverResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{37}
 }
 
-func (m *VolumeDeleteRequest) Reset()                    { *m = VolumeDeleteRequest{} }
-func (m *VolumeDeleteRequest) String() string            { return proto.CompactTextString(m) }
-func (*VolumeDeleteRequest) ProtoMessage()               {}
-func (*VolumeDeleteRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{26} }
+type VolumeEcShardsGenerateRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
 
-func (m *VolumeDeleteRequest) GetVolumdId() uint32 {
-	if m != nil {
-		return m.VolumdId
+	VolumeId   uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+}
+
+func (x *VolumeEcShardsGenerateRequest) Reset() {
+	*x = VolumeEcShardsGenerateRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[38]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsGenerateRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsGenerateRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardsGenerateRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[38]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsGenerateRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsGenerateRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{38}
+}
+
+func (x *VolumeEcShardsGenerateRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-type VolumeDeleteResponse struct {
+func (x *VolumeEcShardsGenerateRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
 }
 
-func (m *VolumeDeleteResponse) Reset()                    { *m = VolumeDeleteResponse{} }
-func (m *VolumeDeleteResponse) String() string            { return proto.CompactTextString(m) }
-func (*VolumeDeleteResponse) ProtoMessage()               {}
-func (*VolumeDeleteResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{27} }
+type VolumeEcShardsGenerateResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeEcShardsGenerateResponse) Reset() {
+	*x = VolumeEcShardsGenerateResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[39]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsGenerateResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsGenerateResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardsGenerateResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[39]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsGenerateResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsGenerateResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{39}
+}
+
+type VolumeEcShardsRebuildRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId   uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+}
+
+func (x *VolumeEcShardsRebuildRequest) Reset() {
+	*x = VolumeEcShardsRebuildRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[40]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsRebuildRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsRebuildRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardsRebuildRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[40]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsRebuildRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsRebuildRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{40}
+}
+
+func (x *VolumeEcShardsRebuildRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardsRebuildRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+type VolumeEcShardsRebuildResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	RebuiltShardIds []uint32 `protobuf:"varint,1,rep,packed,name=rebuilt_shard_ids,json=rebuiltShardIds,proto3" json:"rebuilt_shard_ids,omitempty"`
+}
+
+func (x *VolumeEcShardsRebuildResponse) Reset() {
+	*x = VolumeEcShardsRebuildResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[41]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsRebuildResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsRebuildResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardsRebuildResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[41]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsRebuildResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsRebuildResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{41}
+}
 
-type VolumeUiPageRequest struct {
+func (x *VolumeEcShardsRebuildResponse) GetRebuiltShardIds() []uint32 {
+	if x != nil {
+		return x.RebuiltShardIds
+	}
+	return nil
+}
+
+type VolumeEcShardsCopyRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId       uint32   `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection     string   `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	ShardIds       []uint32 `protobuf:"varint,3,rep,packed,name=shard_ids,json=shardIds,proto3" json:"shard_ids,omitempty"`
+	CopyEcxFile    bool     `protobuf:"varint,4,opt,name=copy_ecx_file,json=copyEcxFile,proto3" json:"copy_ecx_file,omitempty"`
+	SourceDataNode string   `protobuf:"bytes,5,opt,name=source_data_node,json=sourceDataNode,proto3" json:"source_data_node,omitempty"`
+	CopyEcjFile    bool     `protobuf:"varint,6,opt,name=copy_ecj_file,json=copyEcjFile,proto3" json:"copy_ecj_file,omitempty"`
+	CopyVifFile    bool     `protobuf:"varint,7,opt,name=copy_vif_file,json=copyVifFile,proto3" json:"copy_vif_file,omitempty"`
+}
+
+func (x *VolumeEcShardsCopyRequest) Reset() {
+	*x = VolumeEcShardsCopyRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[42]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsCopyRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-func (m *VolumeUiPageRequest) Reset()                    { *m = VolumeUiPageRequest{} }
-func (m *VolumeUiPageRequest) String() string            { return proto.CompactTextString(m) }
-func (*VolumeUiPageRequest) ProtoMessage()               {}
-func (*VolumeUiPageRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{28} }
+func (*VolumeEcShardsCopyRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardsCopyRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[42]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
 
-type VolumeUiPageResponse struct {
+// Deprecated: Use VolumeEcShardsCopyRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsCopyRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{42}
 }
 
-func (m *VolumeUiPageResponse) Reset()                    { *m = VolumeUiPageResponse{} }
-func (m *VolumeUiPageResponse) String() string            { return proto.CompactTextString(m) }
-func (*VolumeUiPageResponse) ProtoMessage()               {}
-func (*VolumeUiPageResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{29} }
+func (x *VolumeEcShardsCopyRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardsCopyRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeEcShardsCopyRequest) GetShardIds() []uint32 {
+	if x != nil {
+		return x.ShardIds
+	}
+	return nil
+}
+
+func (x *VolumeEcShardsCopyRequest) GetCopyEcxFile() bool {
+	if x != nil {
+		return x.CopyEcxFile
+	}
+	return false
+}
+
+func (x *VolumeEcShardsCopyRequest) GetSourceDataNode() string {
+	if x != nil {
+		return x.SourceDataNode
+	}
+	return ""
+}
+
+func (x *VolumeEcShardsCopyRequest) GetCopyEcjFile() bool {
+	if x != nil {
+		return x.CopyEcjFile
+	}
+	return false
+}
+
+func (x *VolumeEcShardsCopyRequest) GetCopyVifFile() bool {
+	if x != nil {
+		return x.CopyVifFile
+	}
+	return false
+}
+
+type VolumeEcShardsCopyResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeEcShardsCopyResponse) Reset() {
+	*x = VolumeEcShardsCopyResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[43]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsCopyResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsCopyResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardsCopyResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[43]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsCopyResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsCopyResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{43}
+}
+
+type VolumeEcShardsDeleteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId   uint32   `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection string   `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	ShardIds   []uint32 `protobuf:"varint,3,rep,packed,name=shard_ids,json=shardIds,proto3" json:"shard_ids,omitempty"`
+}
+
+func (x *VolumeEcShardsDeleteRequest) Reset() {
+	*x = VolumeEcShardsDeleteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[44]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsDeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsDeleteRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardsDeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[44]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsDeleteRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsDeleteRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{44}
+}
+
+func (x *VolumeEcShardsDeleteRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardsDeleteRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeEcShardsDeleteRequest) GetShardIds() []uint32 {
+	if x != nil {
+		return x.ShardIds
+	}
+	return nil
+}
+
+type VolumeEcShardsDeleteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeEcShardsDeleteResponse) Reset() {
+	*x = VolumeEcShardsDeleteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[45]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsDeleteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsDeleteResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardsDeleteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[45]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsDeleteResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsDeleteResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{45}
+}
+
+type VolumeEcShardsMountRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId   uint32   `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection string   `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	ShardIds   []uint32 `protobuf:"varint,3,rep,packed,name=shard_ids,json=shardIds,proto3" json:"shard_ids,omitempty"`
+}
+
+func (x *VolumeEcShardsMountRequest) Reset() {
+	*x = VolumeEcShardsMountRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[46]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsMountRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsMountRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardsMountRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[46]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsMountRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsMountRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{46}
+}
+
+func (x *VolumeEcShardsMountRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardsMountRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeEcShardsMountRequest) GetShardIds() []uint32 {
+	if x != nil {
+		return x.ShardIds
+	}
+	return nil
+}
+
+type VolumeEcShardsMountResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeEcShardsMountResponse) Reset() {
+	*x = VolumeEcShardsMountResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[47]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsMountResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsMountResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardsMountResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[47]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsMountResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsMountResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{47}
+}
+
+type VolumeEcShardsUnmountRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32   `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	ShardIds []uint32 `protobuf:"varint,3,rep,packed,name=shard_ids,json=shardIds,proto3" json:"shard_ids,omitempty"`
+}
+
+func (x *VolumeEcShardsUnmountRequest) Reset() {
+	*x = VolumeEcShardsUnmountRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[48]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsUnmountRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsUnmountRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardsUnmountRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[48]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsUnmountRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsUnmountRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{48}
+}
+
+func (x *VolumeEcShardsUnmountRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardsUnmountRequest) GetShardIds() []uint32 {
+	if x != nil {
+		return x.ShardIds
+	}
+	return nil
+}
+
+type VolumeEcShardsUnmountResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeEcShardsUnmountResponse) Reset() {
+	*x = VolumeEcShardsUnmountResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[49]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsUnmountResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsUnmountResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardsUnmountResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[49]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsUnmountResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsUnmountResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{49}
+}
+
+type VolumeEcShardReadRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	ShardId  uint32 `protobuf:"varint,2,opt,name=shard_id,json=shardId,proto3" json:"shard_id,omitempty"`
+	Offset   int64  `protobuf:"varint,3,opt,name=offset,proto3" json:"offset,omitempty"`
+	Size     int64  `protobuf:"varint,4,opt,name=size,proto3" json:"size,omitempty"`
+	FileKey  uint64 `protobuf:"varint,5,opt,name=file_key,json=fileKey,proto3" json:"file_key,omitempty"`
+}
+
+func (x *VolumeEcShardReadRequest) Reset() {
+	*x = VolumeEcShardReadRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[50]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardReadRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardReadRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardReadRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[50]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardReadRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardReadRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{50}
+}
+
+func (x *VolumeEcShardReadRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardReadRequest) GetShardId() uint32 {
+	if x != nil {
+		return x.ShardId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardReadRequest) GetOffset() int64 {
+	if x != nil {
+		return x.Offset
+	}
+	return 0
+}
+
+func (x *VolumeEcShardReadRequest) GetSize() int64 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
+func (x *VolumeEcShardReadRequest) GetFileKey() uint64 {
+	if x != nil {
+		return x.FileKey
+	}
+	return 0
+}
+
+type VolumeEcShardReadResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Data      []byte `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+	IsDeleted bool   `protobuf:"varint,2,opt,name=is_deleted,json=isDeleted,proto3" json:"is_deleted,omitempty"`
+}
+
+func (x *VolumeEcShardReadResponse) Reset() {
+	*x = VolumeEcShardReadResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[51]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardReadResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardReadResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardReadResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[51]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardReadResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardReadResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{51}
+}
+
+func (x *VolumeEcShardReadResponse) GetData() []byte {
+	if x != nil {
+		return x.Data
+	}
+	return nil
+}
+
+func (x *VolumeEcShardReadResponse) GetIsDeleted() bool {
+	if x != nil {
+		return x.IsDeleted
+	}
+	return false
+}
+
+type VolumeEcBlobDeleteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId   uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	FileKey    uint64 `protobuf:"varint,3,opt,name=file_key,json=fileKey,proto3" json:"file_key,omitempty"`
+	Version    uint32 `protobuf:"varint,4,opt,name=version,proto3" json:"version,omitempty"`
+}
+
+func (x *VolumeEcBlobDeleteRequest) Reset() {
+	*x = VolumeEcBlobDeleteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[52]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcBlobDeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcBlobDeleteRequest) ProtoMessage() {}
+
+func (x *VolumeEcBlobDeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[52]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcBlobDeleteRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcBlobDeleteRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{52}
+}
+
+func (x *VolumeEcBlobDeleteRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcBlobDeleteRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeEcBlobDeleteRequest) GetFileKey() uint64 {
+	if x != nil {
+		return x.FileKey
+	}
+	return 0
+}
+
+func (x *VolumeEcBlobDeleteRequest) GetVersion() uint32 {
+	if x != nil {
+		return x.Version
+	}
+	return 0
+}
+
+type VolumeEcBlobDeleteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeEcBlobDeleteResponse) Reset() {
+	*x = VolumeEcBlobDeleteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[53]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcBlobDeleteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcBlobDeleteResponse) ProtoMessage() {}
+
+func (x *VolumeEcBlobDeleteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[53]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcBlobDeleteResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcBlobDeleteResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{53}
+}
+
+type VolumeEcShardsToVolumeRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId   uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+}
+
+func (x *VolumeEcShardsToVolumeRequest) Reset() {
+	*x = VolumeEcShardsToVolumeRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[54]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsToVolumeRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsToVolumeRequest) ProtoMessage() {}
+
+func (x *VolumeEcShardsToVolumeRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[54]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsToVolumeRequest.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsToVolumeRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{54}
+}
+
+func (x *VolumeEcShardsToVolumeRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeEcShardsToVolumeRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+type VolumeEcShardsToVolumeResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeEcShardsToVolumeResponse) Reset() {
+	*x = VolumeEcShardsToVolumeResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[55]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeEcShardsToVolumeResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeEcShardsToVolumeResponse) ProtoMessage() {}
+
+func (x *VolumeEcShardsToVolumeResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[55]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeEcShardsToVolumeResponse.ProtoReflect.Descriptor instead.
+func (*VolumeEcShardsToVolumeResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{55}
+}
+
+type ReadVolumeFileStatusRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *ReadVolumeFileStatusRequest) Reset() {
+	*x = ReadVolumeFileStatusRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[56]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ReadVolumeFileStatusRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ReadVolumeFileStatusRequest) ProtoMessage() {}
+
+func (x *ReadVolumeFileStatusRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[56]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ReadVolumeFileStatusRequest.ProtoReflect.Descriptor instead.
+func (*ReadVolumeFileStatusRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{56}
+}
+
+func (x *ReadVolumeFileStatusRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+type ReadVolumeFileStatusResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId                uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	IdxFileTimestampSeconds uint64 `protobuf:"varint,2,opt,name=idx_file_timestamp_seconds,json=idxFileTimestampSeconds,proto3" json:"idx_file_timestamp_seconds,omitempty"`
+	IdxFileSize             uint64 `protobuf:"varint,3,opt,name=idx_file_size,json=idxFileSize,proto3" json:"idx_file_size,omitempty"`
+	DatFileTimestampSeconds uint64 `protobuf:"varint,4,opt,name=dat_file_timestamp_seconds,json=datFileTimestampSeconds,proto3" json:"dat_file_timestamp_seconds,omitempty"`
+	DatFileSize             uint64 `protobuf:"varint,5,opt,name=dat_file_size,json=datFileSize,proto3" json:"dat_file_size,omitempty"`
+	FileCount               uint64 `protobuf:"varint,6,opt,name=file_count,json=fileCount,proto3" json:"file_count,omitempty"`
+	CompactionRevision      uint32 `protobuf:"varint,7,opt,name=compaction_revision,json=compactionRevision,proto3" json:"compaction_revision,omitempty"`
+	Collection              string `protobuf:"bytes,8,opt,name=collection,proto3" json:"collection,omitempty"`
+}
+
+func (x *ReadVolumeFileStatusResponse) Reset() {
+	*x = ReadVolumeFileStatusResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[57]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ReadVolumeFileStatusResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ReadVolumeFileStatusResponse) ProtoMessage() {}
+
+func (x *ReadVolumeFileStatusResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[57]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ReadVolumeFileStatusResponse.ProtoReflect.Descriptor instead.
+func (*ReadVolumeFileStatusResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{57}
+}
+
+func (x *ReadVolumeFileStatusResponse) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *ReadVolumeFileStatusResponse) GetIdxFileTimestampSeconds() uint64 {
+	if x != nil {
+		return x.IdxFileTimestampSeconds
+	}
+	return 0
+}
+
+func (x *ReadVolumeFileStatusResponse) GetIdxFileSize() uint64 {
+	if x != nil {
+		return x.IdxFileSize
+	}
+	return 0
+}
+
+func (x *ReadVolumeFileStatusResponse) GetDatFileTimestampSeconds() uint64 {
+	if x != nil {
+		return x.DatFileTimestampSeconds
+	}
+	return 0
+}
+
+func (x *ReadVolumeFileStatusResponse) GetDatFileSize() uint64 {
+	if x != nil {
+		return x.DatFileSize
+	}
+	return 0
+}
+
+func (x *ReadVolumeFileStatusResponse) GetFileCount() uint64 {
+	if x != nil {
+		return x.FileCount
+	}
+	return 0
+}
+
+func (x *ReadVolumeFileStatusResponse) GetCompactionRevision() uint32 {
+	if x != nil {
+		return x.CompactionRevision
+	}
+	return 0
+}
+
+func (x *ReadVolumeFileStatusResponse) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
 
 type DiskStatus struct {
-	Dir  string `protobuf:"bytes,1,opt,name=dir" json:"dir,omitempty"`
-	All  uint64 `protobuf:"varint,2,opt,name=all" json:"all,omitempty"`
-	Used uint64 `protobuf:"varint,3,opt,name=used" json:"used,omitempty"`
-	Free uint64 `protobuf:"varint,4,opt,name=free" json:"free,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Dir         string  `protobuf:"bytes,1,opt,name=dir,proto3" json:"dir,omitempty"`
+	All         uint64  `protobuf:"varint,2,opt,name=all,proto3" json:"all,omitempty"`
+	Used        uint64  `protobuf:"varint,3,opt,name=used,proto3" json:"used,omitempty"`
+	Free        uint64  `protobuf:"varint,4,opt,name=free,proto3" json:"free,omitempty"`
+	PercentFree float32 `protobuf:"fixed32,5,opt,name=percent_free,json=percentFree,proto3" json:"percent_free,omitempty"`
+	PercentUsed float32 `protobuf:"fixed32,6,opt,name=percent_used,json=percentUsed,proto3" json:"percent_used,omitempty"`
+}
+
+func (x *DiskStatus) Reset() {
+	*x = DiskStatus{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[58]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DiskStatus) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DiskStatus) ProtoMessage() {}
+
+func (x *DiskStatus) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[58]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
 }
 
-func (m *DiskStatus) Reset()                    { *m = DiskStatus{} }
-func (m *DiskStatus) String() string            { return proto.CompactTextString(m) }
-func (*DiskStatus) ProtoMessage()               {}
-func (*DiskStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{30} }
+// Deprecated: Use DiskStatus.ProtoReflect.Descriptor instead.
+func (*DiskStatus) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{58}
+}
 
-func (m *DiskStatus) GetDir() string {
-	if m != nil {
-		return m.Dir
+func (x *DiskStatus) GetDir() string {
+	if x != nil {
+		return x.Dir
 	}
 	return ""
 }
 
-func (m *DiskStatus) GetAll() uint64 {
-	if m != nil {
-		return m.All
+func (x *DiskStatus) GetAll() uint64 {
+	if x != nil {
+		return x.All
 	}
 	return 0
 }
 
-func (m *DiskStatus) GetUsed() uint64 {
-	if m != nil {
-		return m.Used
+func (x *DiskStatus) GetUsed() uint64 {
+	if x != nil {
+		return x.Used
 	}
 	return 0
 }
 
-func (m *DiskStatus) GetFree() uint64 {
-	if m != nil {
-		return m.Free
+func (x *DiskStatus) GetFree() uint64 {
+	if x != nil {
+		return x.Free
+	}
+	return 0
+}
+
+func (x *DiskStatus) GetPercentFree() float32 {
+	if x != nil {
+		return x.PercentFree
+	}
+	return 0
+}
+
+func (x *DiskStatus) GetPercentUsed() float32 {
+	if x != nil {
+		return x.PercentUsed
 	}
 	return 0
 }
 
 type MemStatus struct {
-	Goroutines int32  `protobuf:"varint,1,opt,name=goroutines" json:"goroutines,omitempty"`
-	All        uint64 `protobuf:"varint,2,opt,name=all" json:"all,omitempty"`
-	Used       uint64 `protobuf:"varint,3,opt,name=used" json:"used,omitempty"`
-	Free       uint64 `protobuf:"varint,4,opt,name=free" json:"free,omitempty"`
-	Self       uint64 `protobuf:"varint,5,opt,name=self" json:"self,omitempty"`
-	Heap       uint64 `protobuf:"varint,6,opt,name=heap" json:"heap,omitempty"`
-	Stack      uint64 `protobuf:"varint,7,opt,name=stack" json:"stack,omitempty"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Goroutines int32  `protobuf:"varint,1,opt,name=goroutines,proto3" json:"goroutines,omitempty"`
+	All        uint64 `protobuf:"varint,2,opt,name=all,proto3" json:"all,omitempty"`
+	Used       uint64 `protobuf:"varint,3,opt,name=used,proto3" json:"used,omitempty"`
+	Free       uint64 `protobuf:"varint,4,opt,name=free,proto3" json:"free,omitempty"`
+	Self       uint64 `protobuf:"varint,5,opt,name=self,proto3" json:"self,omitempty"`
+	Heap       uint64 `protobuf:"varint,6,opt,name=heap,proto3" json:"heap,omitempty"`
+	Stack      uint64 `protobuf:"varint,7,opt,name=stack,proto3" json:"stack,omitempty"`
+}
+
+func (x *MemStatus) Reset() {
+	*x = MemStatus{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[59]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MemStatus) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MemStatus) ProtoMessage() {}
+
+func (x *MemStatus) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[59]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MemStatus.ProtoReflect.Descriptor instead.
+func (*MemStatus) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{59}
+}
+
+func (x *MemStatus) GetGoroutines() int32 {
+	if x != nil {
+		return x.Goroutines
+	}
+	return 0
+}
+
+func (x *MemStatus) GetAll() uint64 {
+	if x != nil {
+		return x.All
+	}
+	return 0
+}
+
+func (x *MemStatus) GetUsed() uint64 {
+	if x != nil {
+		return x.Used
+	}
+	return 0
+}
+
+func (x *MemStatus) GetFree() uint64 {
+	if x != nil {
+		return x.Free
+	}
+	return 0
 }
 
-func (m *MemStatus) Reset()                    { *m = MemStatus{} }
-func (m *MemStatus) String() string            { return proto.CompactTextString(m) }
-func (*MemStatus) ProtoMessage()               {}
-func (*MemStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{31} }
+func (x *MemStatus) GetSelf() uint64 {
+	if x != nil {
+		return x.Self
+	}
+	return 0
+}
 
-func (m *MemStatus) GetGoroutines() int32 {
-	if m != nil {
-		return m.Goroutines
+func (x *MemStatus) GetHeap() uint64 {
+	if x != nil {
+		return x.Heap
 	}
 	return 0
 }
 
-func (m *MemStatus) GetAll() uint64 {
-	if m != nil {
-		return m.All
+func (x *MemStatus) GetStack() uint64 {
+	if x != nil {
+		return x.Stack
 	}
 	return 0
 }
 
-func (m *MemStatus) GetUsed() uint64 {
-	if m != nil {
-		return m.Used
+// tired storage on volume servers
+type RemoteFile struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	BackendType  string `protobuf:"bytes,1,opt,name=backend_type,json=backendType,proto3" json:"backend_type,omitempty"`
+	BackendId    string `protobuf:"bytes,2,opt,name=backend_id,json=backendId,proto3" json:"backend_id,omitempty"`
+	Key          string `protobuf:"bytes,3,opt,name=key,proto3" json:"key,omitempty"`
+	Offset       uint64 `protobuf:"varint,4,opt,name=offset,proto3" json:"offset,omitempty"`
+	FileSize     uint64 `protobuf:"varint,5,opt,name=file_size,json=fileSize,proto3" json:"file_size,omitempty"`
+	ModifiedTime uint64 `protobuf:"varint,6,opt,name=modified_time,json=modifiedTime,proto3" json:"modified_time,omitempty"`
+	Extension    string `protobuf:"bytes,7,opt,name=extension,proto3" json:"extension,omitempty"`
+}
+
+func (x *RemoteFile) Reset() {
+	*x = RemoteFile{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[60]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RemoteFile) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RemoteFile) ProtoMessage() {}
+
+func (x *RemoteFile) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[60]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RemoteFile.ProtoReflect.Descriptor instead.
+func (*RemoteFile) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{60}
+}
+
+func (x *RemoteFile) GetBackendType() string {
+	if x != nil {
+		return x.BackendType
+	}
+	return ""
+}
+
+func (x *RemoteFile) GetBackendId() string {
+	if x != nil {
+		return x.BackendId
+	}
+	return ""
+}
+
+func (x *RemoteFile) GetKey() string {
+	if x != nil {
+		return x.Key
+	}
+	return ""
+}
+
+func (x *RemoteFile) GetOffset() uint64 {
+	if x != nil {
+		return x.Offset
 	}
 	return 0
 }
 
-func (m *MemStatus) GetFree() uint64 {
-	if m != nil {
-		return m.Free
+func (x *RemoteFile) GetFileSize() uint64 {
+	if x != nil {
+		return x.FileSize
 	}
 	return 0
 }
 
-func (m *MemStatus) GetSelf() uint64 {
-	if m != nil {
-		return m.Self
+func (x *RemoteFile) GetModifiedTime() uint64 {
+	if x != nil {
+		return x.ModifiedTime
 	}
 	return 0
 }
 
-func (m *MemStatus) GetHeap() uint64 {
-	if m != nil {
-		return m.Heap
+func (x *RemoteFile) GetExtension() string {
+	if x != nil {
+		return x.Extension
+	}
+	return ""
+}
+
+type VolumeInfo struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Files       []*RemoteFile `protobuf:"bytes,1,rep,name=files,proto3" json:"files,omitempty"`
+	Version     uint32        `protobuf:"varint,2,opt,name=version,proto3" json:"version,omitempty"`
+	Replication string        `protobuf:"bytes,3,opt,name=replication,proto3" json:"replication,omitempty"`
+}
+
+func (x *VolumeInfo) Reset() {
+	*x = VolumeInfo{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[61]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeInfo) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeInfo) ProtoMessage() {}
+
+func (x *VolumeInfo) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[61]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeInfo.ProtoReflect.Descriptor instead.
+func (*VolumeInfo) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{61}
+}
+
+func (x *VolumeInfo) GetFiles() []*RemoteFile {
+	if x != nil {
+		return x.Files
+	}
+	return nil
+}
+
+func (x *VolumeInfo) GetVersion() uint32 {
+	if x != nil {
+		return x.Version
 	}
 	return 0
 }
 
-func (m *MemStatus) GetStack() uint64 {
-	if m != nil {
-		return m.Stack
+func (x *VolumeInfo) GetReplication() string {
+	if x != nil {
+		return x.Replication
+	}
+	return ""
+}
+
+type VolumeTierMoveDatToRemoteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId               uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection             string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	DestinationBackendName string `protobuf:"bytes,3,opt,name=destination_backend_name,json=destinationBackendName,proto3" json:"destination_backend_name,omitempty"`
+	KeepLocalDatFile       bool   `protobuf:"varint,4,opt,name=keep_local_dat_file,json=keepLocalDatFile,proto3" json:"keep_local_dat_file,omitempty"`
+}
+
+func (x *VolumeTierMoveDatToRemoteRequest) Reset() {
+	*x = VolumeTierMoveDatToRemoteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[62]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTierMoveDatToRemoteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTierMoveDatToRemoteRequest) ProtoMessage() {}
+
+func (x *VolumeTierMoveDatToRemoteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[62]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeTierMoveDatToRemoteRequest.ProtoReflect.Descriptor instead.
+func (*VolumeTierMoveDatToRemoteRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{62}
+}
+
+func (x *VolumeTierMoveDatToRemoteRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+func (x *VolumeTierMoveDatToRemoteRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeTierMoveDatToRemoteRequest) GetDestinationBackendName() string {
+	if x != nil {
+		return x.DestinationBackendName
+	}
+	return ""
+}
+
+func (x *VolumeTierMoveDatToRemoteRequest) GetKeepLocalDatFile() bool {
+	if x != nil {
+		return x.KeepLocalDatFile
+	}
+	return false
+}
+
+type VolumeTierMoveDatToRemoteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Processed           int64   `protobuf:"varint,1,opt,name=processed,proto3" json:"processed,omitempty"`
+	ProcessedPercentage float32 `protobuf:"fixed32,2,opt,name=processedPercentage,proto3" json:"processedPercentage,omitempty"`
+}
+
+func (x *VolumeTierMoveDatToRemoteResponse) Reset() {
+	*x = VolumeTierMoveDatToRemoteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[63]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTierMoveDatToRemoteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTierMoveDatToRemoteResponse) ProtoMessage() {}
+
+func (x *VolumeTierMoveDatToRemoteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[63]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeTierMoveDatToRemoteResponse.ProtoReflect.Descriptor instead.
+func (*VolumeTierMoveDatToRemoteResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{63}
+}
+
+func (x *VolumeTierMoveDatToRemoteResponse) GetProcessed() int64 {
+	if x != nil {
+		return x.Processed
+	}
+	return 0
+}
+
+func (x *VolumeTierMoveDatToRemoteResponse) GetProcessedPercentage() float32 {
+	if x != nil {
+		return x.ProcessedPercentage
+	}
+	return 0
+}
+
+type VolumeTierMoveDatFromRemoteRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId          uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+	Collection        string `protobuf:"bytes,2,opt,name=collection,proto3" json:"collection,omitempty"`
+	KeepRemoteDatFile bool   `protobuf:"varint,3,opt,name=keep_remote_dat_file,json=keepRemoteDatFile,proto3" json:"keep_remote_dat_file,omitempty"`
+}
+
+func (x *VolumeTierMoveDatFromRemoteRequest) Reset() {
+	*x = VolumeTierMoveDatFromRemoteRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[64]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTierMoveDatFromRemoteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTierMoveDatFromRemoteRequest) ProtoMessage() {}
+
+func (x *VolumeTierMoveDatFromRemoteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[64]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeTierMoveDatFromRemoteRequest.ProtoReflect.Descriptor instead.
+func (*VolumeTierMoveDatFromRemoteRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{64}
+}
+
+func (x *VolumeTierMoveDatFromRemoteRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
 	}
 	return 0
 }
 
-func init() {
-	proto.RegisterType((*BatchDeleteRequest)(nil), "volume_server_pb.BatchDeleteRequest")
-	proto.RegisterType((*BatchDeleteResponse)(nil), "volume_server_pb.BatchDeleteResponse")
-	proto.RegisterType((*DeleteResult)(nil), "volume_server_pb.DeleteResult")
-	proto.RegisterType((*Empty)(nil), "volume_server_pb.Empty")
-	proto.RegisterType((*VacuumVolumeCheckRequest)(nil), "volume_server_pb.VacuumVolumeCheckRequest")
-	proto.RegisterType((*VacuumVolumeCheckResponse)(nil), "volume_server_pb.VacuumVolumeCheckResponse")
-	proto.RegisterType((*VacuumVolumeCompactRequest)(nil), "volume_server_pb.VacuumVolumeCompactRequest")
-	proto.RegisterType((*VacuumVolumeCompactResponse)(nil), "volume_server_pb.VacuumVolumeCompactResponse")
-	proto.RegisterType((*VacuumVolumeCommitRequest)(nil), "volume_server_pb.VacuumVolumeCommitRequest")
-	proto.RegisterType((*VacuumVolumeCommitResponse)(nil), "volume_server_pb.VacuumVolumeCommitResponse")
-	proto.RegisterType((*VacuumVolumeCleanupRequest)(nil), "volume_server_pb.VacuumVolumeCleanupRequest")
-	proto.RegisterType((*VacuumVolumeCleanupResponse)(nil), "volume_server_pb.VacuumVolumeCleanupResponse")
-	proto.RegisterType((*DeleteCollectionRequest)(nil), "volume_server_pb.DeleteCollectionRequest")
-	proto.RegisterType((*DeleteCollectionResponse)(nil), "volume_server_pb.DeleteCollectionResponse")
-	proto.RegisterType((*AssignVolumeRequest)(nil), "volume_server_pb.AssignVolumeRequest")
-	proto.RegisterType((*AssignVolumeResponse)(nil), "volume_server_pb.AssignVolumeResponse")
-	proto.RegisterType((*VolumeSyncStatusRequest)(nil), "volume_server_pb.VolumeSyncStatusRequest")
-	proto.RegisterType((*VolumeSyncStatusResponse)(nil), "volume_server_pb.VolumeSyncStatusResponse")
-	proto.RegisterType((*VolumeSyncIndexRequest)(nil), "volume_server_pb.VolumeSyncIndexRequest")
-	proto.RegisterType((*VolumeSyncIndexResponse)(nil), "volume_server_pb.VolumeSyncIndexResponse")
-	proto.RegisterType((*VolumeSyncDataRequest)(nil), "volume_server_pb.VolumeSyncDataRequest")
-	proto.RegisterType((*VolumeSyncDataResponse)(nil), "volume_server_pb.VolumeSyncDataResponse")
-	proto.RegisterType((*VolumeMountRequest)(nil), "volume_server_pb.VolumeMountRequest")
-	proto.RegisterType((*VolumeMountResponse)(nil), "volume_server_pb.VolumeMountResponse")
-	proto.RegisterType((*VolumeUnmountRequest)(nil), "volume_server_pb.VolumeUnmountRequest")
-	proto.RegisterType((*VolumeUnmountResponse)(nil), "volume_server_pb.VolumeUnmountResponse")
-	proto.RegisterType((*VolumeDeleteRequest)(nil), "volume_server_pb.VolumeDeleteRequest")
-	proto.RegisterType((*VolumeDeleteResponse)(nil), "volume_server_pb.VolumeDeleteResponse")
-	proto.RegisterType((*VolumeUiPageRequest)(nil), "volume_server_pb.VolumeUiPageRequest")
-	proto.RegisterType((*VolumeUiPageResponse)(nil), "volume_server_pb.VolumeUiPageResponse")
-	proto.RegisterType((*DiskStatus)(nil), "volume_server_pb.DiskStatus")
-	proto.RegisterType((*MemStatus)(nil), "volume_server_pb.MemStatus")
+func (x *VolumeTierMoveDatFromRemoteRequest) GetCollection() string {
+	if x != nil {
+		return x.Collection
+	}
+	return ""
+}
+
+func (x *VolumeTierMoveDatFromRemoteRequest) GetKeepRemoteDatFile() bool {
+	if x != nil {
+		return x.KeepRemoteDatFile
+	}
+	return false
+}
+
+type VolumeTierMoveDatFromRemoteResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Processed           int64   `protobuf:"varint,1,opt,name=processed,proto3" json:"processed,omitempty"`
+	ProcessedPercentage float32 `protobuf:"fixed32,2,opt,name=processedPercentage,proto3" json:"processedPercentage,omitempty"`
+}
+
+func (x *VolumeTierMoveDatFromRemoteResponse) Reset() {
+	*x = VolumeTierMoveDatFromRemoteResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[65]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeTierMoveDatFromRemoteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeTierMoveDatFromRemoteResponse) ProtoMessage() {}
+
+func (x *VolumeTierMoveDatFromRemoteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[65]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeTierMoveDatFromRemoteResponse.ProtoReflect.Descriptor instead.
+func (*VolumeTierMoveDatFromRemoteResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{65}
+}
+
+func (x *VolumeTierMoveDatFromRemoteResponse) GetProcessed() int64 {
+	if x != nil {
+		return x.Processed
+	}
+	return 0
+}
+
+func (x *VolumeTierMoveDatFromRemoteResponse) GetProcessedPercentage() float32 {
+	if x != nil {
+		return x.ProcessedPercentage
+	}
+	return 0
+}
+
+type VolumeServerStatusRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeServerStatusRequest) Reset() {
+	*x = VolumeServerStatusRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[66]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeServerStatusRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeServerStatusRequest) ProtoMessage() {}
+
+func (x *VolumeServerStatusRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[66]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeServerStatusRequest.ProtoReflect.Descriptor instead.
+func (*VolumeServerStatusRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{66}
+}
+
+type VolumeServerStatusResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	DiskStatuses []*DiskStatus `protobuf:"bytes,1,rep,name=disk_statuses,json=diskStatuses,proto3" json:"disk_statuses,omitempty"`
+	MemoryStatus *MemStatus    `protobuf:"bytes,2,opt,name=memory_status,json=memoryStatus,proto3" json:"memory_status,omitempty"`
+}
+
+func (x *VolumeServerStatusResponse) Reset() {
+	*x = VolumeServerStatusResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[67]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeServerStatusResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeServerStatusResponse) ProtoMessage() {}
+
+func (x *VolumeServerStatusResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[67]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeServerStatusResponse.ProtoReflect.Descriptor instead.
+func (*VolumeServerStatusResponse) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{67}
+}
+
+func (x *VolumeServerStatusResponse) GetDiskStatuses() []*DiskStatus {
+	if x != nil {
+		return x.DiskStatuses
+	}
+	return nil
+}
+
+func (x *VolumeServerStatusResponse) GetMemoryStatus() *MemStatus {
+	if x != nil {
+		return x.MemoryStatus
+	}
+	return nil
+}
+
+// select on volume servers
+type QueryRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Selections          []string                          `protobuf:"bytes,1,rep,name=selections,proto3" json:"selections,omitempty"`
+	FromFileIds         []string                          `protobuf:"bytes,2,rep,name=from_file_ids,json=fromFileIds,proto3" json:"from_file_ids,omitempty"`
+	Filter              *QueryRequest_Filter              `protobuf:"bytes,3,opt,name=filter,proto3" json:"filter,omitempty"`
+	InputSerialization  *QueryRequest_InputSerialization  `protobuf:"bytes,4,opt,name=input_serialization,json=inputSerialization,proto3" json:"input_serialization,omitempty"`
+	OutputSerialization *QueryRequest_OutputSerialization `protobuf:"bytes,5,opt,name=output_serialization,json=outputSerialization,proto3" json:"output_serialization,omitempty"`
+}
+
+func (x *QueryRequest) Reset() {
+	*x = QueryRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[68]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest) ProtoMessage() {}
+
+func (x *QueryRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[68]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest.ProtoReflect.Descriptor instead.
+func (*QueryRequest) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68}
+}
+
+func (x *QueryRequest) GetSelections() []string {
+	if x != nil {
+		return x.Selections
+	}
+	return nil
+}
+
+func (x *QueryRequest) GetFromFileIds() []string {
+	if x != nil {
+		return x.FromFileIds
+	}
+	return nil
+}
+
+func (x *QueryRequest) GetFilter() *QueryRequest_Filter {
+	if x != nil {
+		return x.Filter
+	}
+	return nil
+}
+
+func (x *QueryRequest) GetInputSerialization() *QueryRequest_InputSerialization {
+	if x != nil {
+		return x.InputSerialization
+	}
+	return nil
+}
+
+func (x *QueryRequest) GetOutputSerialization() *QueryRequest_OutputSerialization {
+	if x != nil {
+		return x.OutputSerialization
+	}
+	return nil
+}
+
+type QueriedStripe struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Records []byte `protobuf:"bytes,1,opt,name=records,proto3" json:"records,omitempty"`
+}
+
+func (x *QueriedStripe) Reset() {
+	*x = QueriedStripe{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[69]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueriedStripe) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueriedStripe) ProtoMessage() {}
+
+func (x *QueriedStripe) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[69]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueriedStripe.ProtoReflect.Descriptor instead.
+func (*QueriedStripe) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{69}
+}
+
+func (x *QueriedStripe) GetRecords() []byte {
+	if x != nil {
+		return x.Records
+	}
+	return nil
+}
+
+type QueryRequest_Filter struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Field   string `protobuf:"bytes,1,opt,name=field,proto3" json:"field,omitempty"`
+	Operand string `protobuf:"bytes,2,opt,name=operand,proto3" json:"operand,omitempty"`
+	Value   string `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *QueryRequest_Filter) Reset() {
+	*x = QueryRequest_Filter{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[70]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_Filter) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_Filter) ProtoMessage() {}
+
+func (x *QueryRequest_Filter) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[70]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_Filter.ProtoReflect.Descriptor instead.
+func (*QueryRequest_Filter) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 0}
+}
+
+func (x *QueryRequest_Filter) GetField() string {
+	if x != nil {
+		return x.Field
+	}
+	return ""
+}
+
+func (x *QueryRequest_Filter) GetOperand() string {
+	if x != nil {
+		return x.Operand
+	}
+	return ""
+}
+
+func (x *QueryRequest_Filter) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
+type QueryRequest_InputSerialization struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// NONE | GZIP | BZIP2
+	CompressionType string                                        `protobuf:"bytes,1,opt,name=compression_type,json=compressionType,proto3" json:"compression_type,omitempty"`
+	CsvInput        *QueryRequest_InputSerialization_CSVInput     `protobuf:"bytes,2,opt,name=csv_input,json=csvInput,proto3" json:"csv_input,omitempty"`
+	JsonInput       *QueryRequest_InputSerialization_JSONInput    `protobuf:"bytes,3,opt,name=json_input,json=jsonInput,proto3" json:"json_input,omitempty"`
+	ParquetInput    *QueryRequest_InputSerialization_ParquetInput `protobuf:"bytes,4,opt,name=parquet_input,json=parquetInput,proto3" json:"parquet_input,omitempty"`
+}
+
+func (x *QueryRequest_InputSerialization) Reset() {
+	*x = QueryRequest_InputSerialization{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[71]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_InputSerialization) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_InputSerialization) ProtoMessage() {}
+
+func (x *QueryRequest_InputSerialization) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[71]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_InputSerialization.ProtoReflect.Descriptor instead.
+func (*QueryRequest_InputSerialization) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 1}
+}
+
+func (x *QueryRequest_InputSerialization) GetCompressionType() string {
+	if x != nil {
+		return x.CompressionType
+	}
+	return ""
+}
+
+func (x *QueryRequest_InputSerialization) GetCsvInput() *QueryRequest_InputSerialization_CSVInput {
+	if x != nil {
+		return x.CsvInput
+	}
+	return nil
+}
+
+func (x *QueryRequest_InputSerialization) GetJsonInput() *QueryRequest_InputSerialization_JSONInput {
+	if x != nil {
+		return x.JsonInput
+	}
+	return nil
+}
+
+func (x *QueryRequest_InputSerialization) GetParquetInput() *QueryRequest_InputSerialization_ParquetInput {
+	if x != nil {
+		return x.ParquetInput
+	}
+	return nil
+}
+
+type QueryRequest_OutputSerialization struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	CsvOutput  *QueryRequest_OutputSerialization_CSVOutput  `protobuf:"bytes,2,opt,name=csv_output,json=csvOutput,proto3" json:"csv_output,omitempty"`
+	JsonOutput *QueryRequest_OutputSerialization_JSONOutput `protobuf:"bytes,3,opt,name=json_output,json=jsonOutput,proto3" json:"json_output,omitempty"`
+}
+
+func (x *QueryRequest_OutputSerialization) Reset() {
+	*x = QueryRequest_OutputSerialization{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[72]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_OutputSerialization) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_OutputSerialization) ProtoMessage() {}
+
+func (x *QueryRequest_OutputSerialization) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[72]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_OutputSerialization.ProtoReflect.Descriptor instead.
+func (*QueryRequest_OutputSerialization) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 2}
+}
+
+func (x *QueryRequest_OutputSerialization) GetCsvOutput() *QueryRequest_OutputSerialization_CSVOutput {
+	if x != nil {
+		return x.CsvOutput
+	}
+	return nil
+}
+
+func (x *QueryRequest_OutputSerialization) GetJsonOutput() *QueryRequest_OutputSerialization_JSONOutput {
+	if x != nil {
+		return x.JsonOutput
+	}
+	return nil
+}
+
+type QueryRequest_InputSerialization_CSVInput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	FileHeaderInfo       string `protobuf:"bytes,1,opt,name=file_header_info,json=fileHeaderInfo,proto3" json:"file_header_info,omitempty"`                   // Valid values: NONE | USE | IGNORE
+	RecordDelimiter      string `protobuf:"bytes,2,opt,name=record_delimiter,json=recordDelimiter,proto3" json:"record_delimiter,omitempty"`                  // Default: \n
+	FieldDelimiter       string `protobuf:"bytes,3,opt,name=field_delimiter,json=fieldDelimiter,proto3" json:"field_delimiter,omitempty"`                     // Default: ,
+	QuoteCharactoer      string `protobuf:"bytes,4,opt,name=quote_charactoer,json=quoteCharactoer,proto3" json:"quote_charactoer,omitempty"`                  // Default: "
+	QuoteEscapeCharacter string `protobuf:"bytes,5,opt,name=quote_escape_character,json=quoteEscapeCharacter,proto3" json:"quote_escape_character,omitempty"` // Default: "
+	Comments             string `protobuf:"bytes,6,opt,name=comments,proto3" json:"comments,omitempty"`                                                       // Default: #
+	// If true, records might contain record delimiters within quote characters
+	AllowQuotedRecordDelimiter bool `protobuf:"varint,7,opt,name=allow_quoted_record_delimiter,json=allowQuotedRecordDelimiter,proto3" json:"allow_quoted_record_delimiter,omitempty"` // default False.
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) Reset() {
+	*x = QueryRequest_InputSerialization_CSVInput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[73]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_InputSerialization_CSVInput) ProtoMessage() {}
+
+func (x *QueryRequest_InputSerialization_CSVInput) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[73]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_InputSerialization_CSVInput.ProtoReflect.Descriptor instead.
+func (*QueryRequest_InputSerialization_CSVInput) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 1, 0}
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) GetFileHeaderInfo() string {
+	if x != nil {
+		return x.FileHeaderInfo
+	}
+	return ""
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) GetRecordDelimiter() string {
+	if x != nil {
+		return x.RecordDelimiter
+	}
+	return ""
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) GetFieldDelimiter() string {
+	if x != nil {
+		return x.FieldDelimiter
+	}
+	return ""
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) GetQuoteCharactoer() string {
+	if x != nil {
+		return x.QuoteCharactoer
+	}
+	return ""
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) GetQuoteEscapeCharacter() string {
+	if x != nil {
+		return x.QuoteEscapeCharacter
+	}
+	return ""
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) GetComments() string {
+	if x != nil {
+		return x.Comments
+	}
+	return ""
+}
+
+func (x *QueryRequest_InputSerialization_CSVInput) GetAllowQuotedRecordDelimiter() bool {
+	if x != nil {
+		return x.AllowQuotedRecordDelimiter
+	}
+	return false
+}
+
+type QueryRequest_InputSerialization_JSONInput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Type string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"` // Valid values: DOCUMENT | LINES
+}
+
+func (x *QueryRequest_InputSerialization_JSONInput) Reset() {
+	*x = QueryRequest_InputSerialization_JSONInput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[74]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_InputSerialization_JSONInput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_InputSerialization_JSONInput) ProtoMessage() {}
+
+func (x *QueryRequest_InputSerialization_JSONInput) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[74]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_InputSerialization_JSONInput.ProtoReflect.Descriptor instead.
+func (*QueryRequest_InputSerialization_JSONInput) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 1, 1}
+}
+
+func (x *QueryRequest_InputSerialization_JSONInput) GetType() string {
+	if x != nil {
+		return x.Type
+	}
+	return ""
+}
+
+type QueryRequest_InputSerialization_ParquetInput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *QueryRequest_InputSerialization_ParquetInput) Reset() {
+	*x = QueryRequest_InputSerialization_ParquetInput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[75]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_InputSerialization_ParquetInput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_InputSerialization_ParquetInput) ProtoMessage() {}
+
+func (x *QueryRequest_InputSerialization_ParquetInput) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[75]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_InputSerialization_ParquetInput.ProtoReflect.Descriptor instead.
+func (*QueryRequest_InputSerialization_ParquetInput) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 1, 2}
+}
+
+type QueryRequest_OutputSerialization_CSVOutput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	QuoteFields          string `protobuf:"bytes,1,opt,name=quote_fields,json=quoteFields,proto3" json:"quote_fields,omitempty"`                              // Valid values: ALWAYS | ASNEEDED
+	RecordDelimiter      string `protobuf:"bytes,2,opt,name=record_delimiter,json=recordDelimiter,proto3" json:"record_delimiter,omitempty"`                  // Default: \n
+	FieldDelimiter       string `protobuf:"bytes,3,opt,name=field_delimiter,json=fieldDelimiter,proto3" json:"field_delimiter,omitempty"`                     // Default: ,
+	QuoteCharactoer      string `protobuf:"bytes,4,opt,name=quote_charactoer,json=quoteCharactoer,proto3" json:"quote_charactoer,omitempty"`                  // Default: "
+	QuoteEscapeCharacter string `protobuf:"bytes,5,opt,name=quote_escape_character,json=quoteEscapeCharacter,proto3" json:"quote_escape_character,omitempty"` // Default: "
+}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) Reset() {
+	*x = QueryRequest_OutputSerialization_CSVOutput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[76]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_OutputSerialization_CSVOutput) ProtoMessage() {}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[76]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_OutputSerialization_CSVOutput.ProtoReflect.Descriptor instead.
+func (*QueryRequest_OutputSerialization_CSVOutput) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 2, 0}
+}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) GetQuoteFields() string {
+	if x != nil {
+		return x.QuoteFields
+	}
+	return ""
+}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) GetRecordDelimiter() string {
+	if x != nil {
+		return x.RecordDelimiter
+	}
+	return ""
+}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) GetFieldDelimiter() string {
+	if x != nil {
+		return x.FieldDelimiter
+	}
+	return ""
+}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) GetQuoteCharactoer() string {
+	if x != nil {
+		return x.QuoteCharactoer
+	}
+	return ""
+}
+
+func (x *QueryRequest_OutputSerialization_CSVOutput) GetQuoteEscapeCharacter() string {
+	if x != nil {
+		return x.QuoteEscapeCharacter
+	}
+	return ""
+}
+
+type QueryRequest_OutputSerialization_JSONOutput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	RecordDelimiter string `protobuf:"bytes,1,opt,name=record_delimiter,json=recordDelimiter,proto3" json:"record_delimiter,omitempty"`
+}
+
+func (x *QueryRequest_OutputSerialization_JSONOutput) Reset() {
+	*x = QueryRequest_OutputSerialization_JSONOutput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_volume_server_proto_msgTypes[77]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *QueryRequest_OutputSerialization_JSONOutput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*QueryRequest_OutputSerialization_JSONOutput) ProtoMessage() {}
+
+func (x *QueryRequest_OutputSerialization_JSONOutput) ProtoReflect() protoreflect.Message {
+	mi := &file_volume_server_proto_msgTypes[77]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use QueryRequest_OutputSerialization_JSONOutput.ProtoReflect.Descriptor instead.
+func (*QueryRequest_OutputSerialization_JSONOutput) Descriptor() ([]byte, []int) {
+	return file_volume_server_proto_rawDescGZIP(), []int{68, 2, 1}
+}
+
+func (x *QueryRequest_OutputSerialization_JSONOutput) GetRecordDelimiter() string {
+	if x != nil {
+		return x.RecordDelimiter
+	}
+	return ""
+}
+
+var File_volume_server_proto protoreflect.FileDescriptor
+
+var file_volume_server_proto_rawDesc = []byte{
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+}
+
+var (
+	file_volume_server_proto_rawDescOnce sync.Once
+	file_volume_server_proto_rawDescData = file_volume_server_proto_rawDesc
+)
+
+func file_volume_server_proto_rawDescGZIP() []byte {
+	file_volume_server_proto_rawDescOnce.Do(func() {
+		file_volume_server_proto_rawDescData = protoimpl.X.CompressGZIP(file_volume_server_proto_rawDescData)
+	})
+	return file_volume_server_proto_rawDescData
+}
+
+var file_volume_server_proto_msgTypes = make([]protoimpl.MessageInfo, 78)
+var file_volume_server_proto_goTypes = []interface{}{
+	(*BatchDeleteRequest)(nil),                           // 0: volume_server_pb.BatchDeleteRequest
+	(*BatchDeleteResponse)(nil),                          // 1: volume_server_pb.BatchDeleteResponse
+	(*DeleteResult)(nil),                                 // 2: volume_server_pb.DeleteResult
+	(*Empty)(nil),                                        // 3: volume_server_pb.Empty
+	(*VacuumVolumeCheckRequest)(nil),                     // 4: volume_server_pb.VacuumVolumeCheckRequest
+	(*VacuumVolumeCheckResponse)(nil),                    // 5: volume_server_pb.VacuumVolumeCheckResponse
+	(*VacuumVolumeCompactRequest)(nil),                   // 6: volume_server_pb.VacuumVolumeCompactRequest
+	(*VacuumVolumeCompactResponse)(nil),                  // 7: volume_server_pb.VacuumVolumeCompactResponse
+	(*VacuumVolumeCommitRequest)(nil),                    // 8: volume_server_pb.VacuumVolumeCommitRequest
+	(*VacuumVolumeCommitResponse)(nil),                   // 9: volume_server_pb.VacuumVolumeCommitResponse
+	(*VacuumVolumeCleanupRequest)(nil),                   // 10: volume_server_pb.VacuumVolumeCleanupRequest
+	(*VacuumVolumeCleanupResponse)(nil),                  // 11: volume_server_pb.VacuumVolumeCleanupResponse
+	(*DeleteCollectionRequest)(nil),                      // 12: volume_server_pb.DeleteCollectionRequest
+	(*DeleteCollectionResponse)(nil),                     // 13: volume_server_pb.DeleteCollectionResponse
+	(*AllocateVolumeRequest)(nil),                        // 14: volume_server_pb.AllocateVolumeRequest
+	(*AllocateVolumeResponse)(nil),                       // 15: volume_server_pb.AllocateVolumeResponse
+	(*VolumeSyncStatusRequest)(nil),                      // 16: volume_server_pb.VolumeSyncStatusRequest
+	(*VolumeSyncStatusResponse)(nil),                     // 17: volume_server_pb.VolumeSyncStatusResponse
+	(*VolumeIncrementalCopyRequest)(nil),                 // 18: volume_server_pb.VolumeIncrementalCopyRequest
+	(*VolumeIncrementalCopyResponse)(nil),                // 19: volume_server_pb.VolumeIncrementalCopyResponse
+	(*VolumeMountRequest)(nil),                           // 20: volume_server_pb.VolumeMountRequest
+	(*VolumeMountResponse)(nil),                          // 21: volume_server_pb.VolumeMountResponse
+	(*VolumeUnmountRequest)(nil),                         // 22: volume_server_pb.VolumeUnmountRequest
+	(*VolumeUnmountResponse)(nil),                        // 23: volume_server_pb.VolumeUnmountResponse
+	(*VolumeDeleteRequest)(nil),                          // 24: volume_server_pb.VolumeDeleteRequest
+	(*VolumeDeleteResponse)(nil),                         // 25: volume_server_pb.VolumeDeleteResponse
+	(*VolumeMarkReadonlyRequest)(nil),                    // 26: volume_server_pb.VolumeMarkReadonlyRequest
+	(*VolumeMarkReadonlyResponse)(nil),                   // 27: volume_server_pb.VolumeMarkReadonlyResponse
+	(*VolumeConfigureRequest)(nil),                       // 28: volume_server_pb.VolumeConfigureRequest
+	(*VolumeConfigureResponse)(nil),                      // 29: volume_server_pb.VolumeConfigureResponse
+	(*VolumeCopyRequest)(nil),                            // 30: volume_server_pb.VolumeCopyRequest
+	(*VolumeCopyResponse)(nil),                           // 31: volume_server_pb.VolumeCopyResponse
+	(*CopyFileRequest)(nil),                              // 32: volume_server_pb.CopyFileRequest
+	(*CopyFileResponse)(nil),                             // 33: volume_server_pb.CopyFileResponse
+	(*VolumeTailSenderRequest)(nil),                      // 34: volume_server_pb.VolumeTailSenderRequest
+	(*VolumeTailSenderResponse)(nil),                     // 35: volume_server_pb.VolumeTailSenderResponse
+	(*VolumeTailReceiverRequest)(nil),                    // 36: volume_server_pb.VolumeTailReceiverRequest
+	(*VolumeTailReceiverResponse)(nil),                   // 37: volume_server_pb.VolumeTailReceiverResponse
+	(*VolumeEcShardsGenerateRequest)(nil),                // 38: volume_server_pb.VolumeEcShardsGenerateRequest
+	(*VolumeEcShardsGenerateResponse)(nil),               // 39: volume_server_pb.VolumeEcShardsGenerateResponse
+	(*VolumeEcShardsRebuildRequest)(nil),                 // 40: volume_server_pb.VolumeEcShardsRebuildRequest
+	(*VolumeEcShardsRebuildResponse)(nil),                // 41: volume_server_pb.VolumeEcShardsRebuildResponse
+	(*VolumeEcShardsCopyRequest)(nil),                    // 42: volume_server_pb.VolumeEcShardsCopyRequest
+	(*VolumeEcShardsCopyResponse)(nil),                   // 43: volume_server_pb.VolumeEcShardsCopyResponse
+	(*VolumeEcShardsDeleteRequest)(nil),                  // 44: volume_server_pb.VolumeEcShardsDeleteRequest
+	(*VolumeEcShardsDeleteResponse)(nil),                 // 45: volume_server_pb.VolumeEcShardsDeleteResponse
+	(*VolumeEcShardsMountRequest)(nil),                   // 46: volume_server_pb.VolumeEcShardsMountRequest
+	(*VolumeEcShardsMountResponse)(nil),                  // 47: volume_server_pb.VolumeEcShardsMountResponse
+	(*VolumeEcShardsUnmountRequest)(nil),                 // 48: volume_server_pb.VolumeEcShardsUnmountRequest
+	(*VolumeEcShardsUnmountResponse)(nil),                // 49: volume_server_pb.VolumeEcShardsUnmountResponse
+	(*VolumeEcShardReadRequest)(nil),                     // 50: volume_server_pb.VolumeEcShardReadRequest
+	(*VolumeEcShardReadResponse)(nil),                    // 51: volume_server_pb.VolumeEcShardReadResponse
+	(*VolumeEcBlobDeleteRequest)(nil),                    // 52: volume_server_pb.VolumeEcBlobDeleteRequest
+	(*VolumeEcBlobDeleteResponse)(nil),                   // 53: volume_server_pb.VolumeEcBlobDeleteResponse
+	(*VolumeEcShardsToVolumeRequest)(nil),                // 54: volume_server_pb.VolumeEcShardsToVolumeRequest
+	(*VolumeEcShardsToVolumeResponse)(nil),               // 55: volume_server_pb.VolumeEcShardsToVolumeResponse
+	(*ReadVolumeFileStatusRequest)(nil),                  // 56: volume_server_pb.ReadVolumeFileStatusRequest
+	(*ReadVolumeFileStatusResponse)(nil),                 // 57: volume_server_pb.ReadVolumeFileStatusResponse
+	(*DiskStatus)(nil),                                   // 58: volume_server_pb.DiskStatus
+	(*MemStatus)(nil),                                    // 59: volume_server_pb.MemStatus
+	(*RemoteFile)(nil),                                   // 60: volume_server_pb.RemoteFile
+	(*VolumeInfo)(nil),                                   // 61: volume_server_pb.VolumeInfo
+	(*VolumeTierMoveDatToRemoteRequest)(nil),             // 62: volume_server_pb.VolumeTierMoveDatToRemoteRequest
+	(*VolumeTierMoveDatToRemoteResponse)(nil),            // 63: volume_server_pb.VolumeTierMoveDatToRemoteResponse
+	(*VolumeTierMoveDatFromRemoteRequest)(nil),           // 64: volume_server_pb.VolumeTierMoveDatFromRemoteRequest
+	(*VolumeTierMoveDatFromRemoteResponse)(nil),          // 65: volume_server_pb.VolumeTierMoveDatFromRemoteResponse
+	(*VolumeServerStatusRequest)(nil),                    // 66: volume_server_pb.VolumeServerStatusRequest
+	(*VolumeServerStatusResponse)(nil),                   // 67: volume_server_pb.VolumeServerStatusResponse
+	(*QueryRequest)(nil),                                 // 68: volume_server_pb.QueryRequest
+	(*QueriedStripe)(nil),                                // 69: volume_server_pb.QueriedStripe
+	(*QueryRequest_Filter)(nil),                          // 70: volume_server_pb.QueryRequest.Filter
+	(*QueryRequest_InputSerialization)(nil),              // 71: volume_server_pb.QueryRequest.InputSerialization
+	(*QueryRequest_OutputSerialization)(nil),             // 72: volume_server_pb.QueryRequest.OutputSerialization
+	(*QueryRequest_InputSerialization_CSVInput)(nil),     // 73: volume_server_pb.QueryRequest.InputSerialization.CSVInput
+	(*QueryRequest_InputSerialization_JSONInput)(nil),    // 74: volume_server_pb.QueryRequest.InputSerialization.JSONInput
+	(*QueryRequest_InputSerialization_ParquetInput)(nil), // 75: volume_server_pb.QueryRequest.InputSerialization.ParquetInput
+	(*QueryRequest_OutputSerialization_CSVOutput)(nil),   // 76: volume_server_pb.QueryRequest.OutputSerialization.CSVOutput
+	(*QueryRequest_OutputSerialization_JSONOutput)(nil),  // 77: volume_server_pb.QueryRequest.OutputSerialization.JSONOutput
+}
+var file_volume_server_proto_depIdxs = []int32{
+	2,  // 0: volume_server_pb.BatchDeleteResponse.results:type_name -> volume_server_pb.DeleteResult
+	60, // 1: volume_server_pb.VolumeInfo.files:type_name -> volume_server_pb.RemoteFile
+	58, // 2: volume_server_pb.VolumeServerStatusResponse.disk_statuses:type_name -> volume_server_pb.DiskStatus
+	59, // 3: volume_server_pb.VolumeServerStatusResponse.memory_status:type_name -> volume_server_pb.MemStatus
+	70, // 4: volume_server_pb.QueryRequest.filter:type_name -> volume_server_pb.QueryRequest.Filter
+	71, // 5: volume_server_pb.QueryRequest.input_serialization:type_name -> volume_server_pb.QueryRequest.InputSerialization
+	72, // 6: volume_server_pb.QueryRequest.output_serialization:type_name -> volume_server_pb.QueryRequest.OutputSerialization
+	73, // 7: volume_server_pb.QueryRequest.InputSerialization.csv_input:type_name -> volume_server_pb.QueryRequest.InputSerialization.CSVInput
+	74, // 8: volume_server_pb.QueryRequest.InputSerialization.json_input:type_name -> volume_server_pb.QueryRequest.InputSerialization.JSONInput
+	75, // 9: volume_server_pb.QueryRequest.InputSerialization.parquet_input:type_name -> volume_server_pb.QueryRequest.InputSerialization.ParquetInput
+	76, // 10: volume_server_pb.QueryRequest.OutputSerialization.csv_output:type_name -> volume_server_pb.QueryRequest.OutputSerialization.CSVOutput
+	77, // 11: volume_server_pb.QueryRequest.OutputSerialization.json_output:type_name -> volume_server_pb.QueryRequest.OutputSerialization.JSONOutput
+	0,  // 12: volume_server_pb.VolumeServer.BatchDelete:input_type -> volume_server_pb.BatchDeleteRequest
+	4,  // 13: volume_server_pb.VolumeServer.VacuumVolumeCheck:input_type -> volume_server_pb.VacuumVolumeCheckRequest
+	6,  // 14: volume_server_pb.VolumeServer.VacuumVolumeCompact:input_type -> volume_server_pb.VacuumVolumeCompactRequest
+	8,  // 15: volume_server_pb.VolumeServer.VacuumVolumeCommit:input_type -> volume_server_pb.VacuumVolumeCommitRequest
+	10, // 16: volume_server_pb.VolumeServer.VacuumVolumeCleanup:input_type -> volume_server_pb.VacuumVolumeCleanupRequest
+	12, // 17: volume_server_pb.VolumeServer.DeleteCollection:input_type -> volume_server_pb.DeleteCollectionRequest
+	14, // 18: volume_server_pb.VolumeServer.AllocateVolume:input_type -> volume_server_pb.AllocateVolumeRequest
+	16, // 19: volume_server_pb.VolumeServer.VolumeSyncStatus:input_type -> volume_server_pb.VolumeSyncStatusRequest
+	18, // 20: volume_server_pb.VolumeServer.VolumeIncrementalCopy:input_type -> volume_server_pb.VolumeIncrementalCopyRequest
+	20, // 21: volume_server_pb.VolumeServer.VolumeMount:input_type -> volume_server_pb.VolumeMountRequest
+	22, // 22: volume_server_pb.VolumeServer.VolumeUnmount:input_type -> volume_server_pb.VolumeUnmountRequest
+	24, // 23: volume_server_pb.VolumeServer.VolumeDelete:input_type -> volume_server_pb.VolumeDeleteRequest
+	26, // 24: volume_server_pb.VolumeServer.VolumeMarkReadonly:input_type -> volume_server_pb.VolumeMarkReadonlyRequest
+	28, // 25: volume_server_pb.VolumeServer.VolumeConfigure:input_type -> volume_server_pb.VolumeConfigureRequest
+	30, // 26: volume_server_pb.VolumeServer.VolumeCopy:input_type -> volume_server_pb.VolumeCopyRequest
+	56, // 27: volume_server_pb.VolumeServer.ReadVolumeFileStatus:input_type -> volume_server_pb.ReadVolumeFileStatusRequest
+	32, // 28: volume_server_pb.VolumeServer.CopyFile:input_type -> volume_server_pb.CopyFileRequest
+	34, // 29: volume_server_pb.VolumeServer.VolumeTailSender:input_type -> volume_server_pb.VolumeTailSenderRequest
+	36, // 30: volume_server_pb.VolumeServer.VolumeTailReceiver:input_type -> volume_server_pb.VolumeTailReceiverRequest
+	38, // 31: volume_server_pb.VolumeServer.VolumeEcShardsGenerate:input_type -> volume_server_pb.VolumeEcShardsGenerateRequest
+	40, // 32: volume_server_pb.VolumeServer.VolumeEcShardsRebuild:input_type -> volume_server_pb.VolumeEcShardsRebuildRequest
+	42, // 33: volume_server_pb.VolumeServer.VolumeEcShardsCopy:input_type -> volume_server_pb.VolumeEcShardsCopyRequest
+	44, // 34: volume_server_pb.VolumeServer.VolumeEcShardsDelete:input_type -> volume_server_pb.VolumeEcShardsDeleteRequest
+	46, // 35: volume_server_pb.VolumeServer.VolumeEcShardsMount:input_type -> volume_server_pb.VolumeEcShardsMountRequest
+	48, // 36: volume_server_pb.VolumeServer.VolumeEcShardsUnmount:input_type -> volume_server_pb.VolumeEcShardsUnmountRequest
+	50, // 37: volume_server_pb.VolumeServer.VolumeEcShardRead:input_type -> volume_server_pb.VolumeEcShardReadRequest
+	52, // 38: volume_server_pb.VolumeServer.VolumeEcBlobDelete:input_type -> volume_server_pb.VolumeEcBlobDeleteRequest
+	54, // 39: volume_server_pb.VolumeServer.VolumeEcShardsToVolume:input_type -> volume_server_pb.VolumeEcShardsToVolumeRequest
+	62, // 40: volume_server_pb.VolumeServer.VolumeTierMoveDatToRemote:input_type -> volume_server_pb.VolumeTierMoveDatToRemoteRequest
+	64, // 41: volume_server_pb.VolumeServer.VolumeTierMoveDatFromRemote:input_type -> volume_server_pb.VolumeTierMoveDatFromRemoteRequest
+	66, // 42: volume_server_pb.VolumeServer.VolumeServerStatus:input_type -> volume_server_pb.VolumeServerStatusRequest
+	68, // 43: volume_server_pb.VolumeServer.Query:input_type -> volume_server_pb.QueryRequest
+	1,  // 44: volume_server_pb.VolumeServer.BatchDelete:output_type -> volume_server_pb.BatchDeleteResponse
+	5,  // 45: volume_server_pb.VolumeServer.VacuumVolumeCheck:output_type -> volume_server_pb.VacuumVolumeCheckResponse
+	7,  // 46: volume_server_pb.VolumeServer.VacuumVolumeCompact:output_type -> volume_server_pb.VacuumVolumeCompactResponse
+	9,  // 47: volume_server_pb.VolumeServer.VacuumVolumeCommit:output_type -> volume_server_pb.VacuumVolumeCommitResponse
+	11, // 48: volume_server_pb.VolumeServer.VacuumVolumeCleanup:output_type -> volume_server_pb.VacuumVolumeCleanupResponse
+	13, // 49: volume_server_pb.VolumeServer.DeleteCollection:output_type -> volume_server_pb.DeleteCollectionResponse
+	15, // 50: volume_server_pb.VolumeServer.AllocateVolume:output_type -> volume_server_pb.AllocateVolumeResponse
+	17, // 51: volume_server_pb.VolumeServer.VolumeSyncStatus:output_type -> volume_server_pb.VolumeSyncStatusResponse
+	19, // 52: volume_server_pb.VolumeServer.VolumeIncrementalCopy:output_type -> volume_server_pb.VolumeIncrementalCopyResponse
+	21, // 53: volume_server_pb.VolumeServer.VolumeMount:output_type -> volume_server_pb.VolumeMountResponse
+	23, // 54: volume_server_pb.VolumeServer.VolumeUnmount:output_type -> volume_server_pb.VolumeUnmountResponse
+	25, // 55: volume_server_pb.VolumeServer.VolumeDelete:output_type -> volume_server_pb.VolumeDeleteResponse
+	27, // 56: volume_server_pb.VolumeServer.VolumeMarkReadonly:output_type -> volume_server_pb.VolumeMarkReadonlyResponse
+	29, // 57: volume_server_pb.VolumeServer.VolumeConfigure:output_type -> volume_server_pb.VolumeConfigureResponse
+	31, // 58: volume_server_pb.VolumeServer.VolumeCopy:output_type -> volume_server_pb.VolumeCopyResponse
+	57, // 59: volume_server_pb.VolumeServer.ReadVolumeFileStatus:output_type -> volume_server_pb.ReadVolumeFileStatusResponse
+	33, // 60: volume_server_pb.VolumeServer.CopyFile:output_type -> volume_server_pb.CopyFileResponse
+	35, // 61: volume_server_pb.VolumeServer.VolumeTailSender:output_type -> volume_server_pb.VolumeTailSenderResponse
+	37, // 62: volume_server_pb.VolumeServer.VolumeTailReceiver:output_type -> volume_server_pb.VolumeTailReceiverResponse
+	39, // 63: volume_server_pb.VolumeServer.VolumeEcShardsGenerate:output_type -> volume_server_pb.VolumeEcShardsGenerateResponse
+	41, // 64: volume_server_pb.VolumeServer.VolumeEcShardsRebuild:output_type -> volume_server_pb.VolumeEcShardsRebuildResponse
+	43, // 65: volume_server_pb.VolumeServer.VolumeEcShardsCopy:output_type -> volume_server_pb.VolumeEcShardsCopyResponse
+	45, // 66: volume_server_pb.VolumeServer.VolumeEcShardsDelete:output_type -> volume_server_pb.VolumeEcShardsDeleteResponse
+	47, // 67: volume_server_pb.VolumeServer.VolumeEcShardsMount:output_type -> volume_server_pb.VolumeEcShardsMountResponse
+	49, // 68: volume_server_pb.VolumeServer.VolumeEcShardsUnmount:output_type -> volume_server_pb.VolumeEcShardsUnmountResponse
+	51, // 69: volume_server_pb.VolumeServer.VolumeEcShardRead:output_type -> volume_server_pb.VolumeEcShardReadResponse
+	53, // 70: volume_server_pb.VolumeServer.VolumeEcBlobDelete:output_type -> volume_server_pb.VolumeEcBlobDeleteResponse
+	55, // 71: volume_server_pb.VolumeServer.VolumeEcShardsToVolume:output_type -> volume_server_pb.VolumeEcShardsToVolumeResponse
+	63, // 72: volume_server_pb.VolumeServer.VolumeTierMoveDatToRemote:output_type -> volume_server_pb.VolumeTierMoveDatToRemoteResponse
+	65, // 73: volume_server_pb.VolumeServer.VolumeTierMoveDatFromRemote:output_type -> volume_server_pb.VolumeTierMoveDatFromRemoteResponse
+	67, // 74: volume_server_pb.VolumeServer.VolumeServerStatus:output_type -> volume_server_pb.VolumeServerStatusResponse
+	69, // 75: volume_server_pb.VolumeServer.Query:output_type -> volume_server_pb.QueriedStripe
+	44, // [44:76] is the sub-list for method output_type
+	12, // [12:44] is the sub-list for method input_type
+	12, // [12:12] is the sub-list for extension type_name
+	12, // [12:12] is the sub-list for extension extendee
+	0,  // [0:12] is the sub-list for field type_name
+}
+
+func init() { file_volume_server_proto_init() }
+func file_volume_server_proto_init() {
+	if File_volume_server_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_volume_server_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*BatchDeleteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*BatchDeleteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteResult); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Empty); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCheckRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCheckResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCompactRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCompactResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCommitRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCommitResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCleanupRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VacuumVolumeCleanupResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteCollectionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DeleteCollectionResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AllocateVolumeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*AllocateVolumeResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeSyncStatusRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeSyncStatusResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeIncrementalCopyRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeIncrementalCopyResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeMountRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeMountResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeUnmountRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeUnmountResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeDeleteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeDeleteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeMarkReadonlyRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeMarkReadonlyResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeConfigureRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeConfigureResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[30].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeCopyRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[31].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeCopyResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[32].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CopyFileRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[33].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*CopyFileResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[34].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTailSenderRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTailSenderResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTailReceiverRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTailReceiverResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsGenerateRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[39].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsGenerateResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsRebuildRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsRebuildResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsCopyRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsCopyResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[44].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsDeleteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[45].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsDeleteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[46].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsMountRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[47].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsMountResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[48].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsUnmountRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[49].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsUnmountResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[50].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardReadRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[51].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardReadResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[52].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcBlobDeleteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[53].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcBlobDeleteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[54].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsToVolumeRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[55].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeEcShardsToVolumeResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[56].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ReadVolumeFileStatusRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[57].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ReadVolumeFileStatusResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[58].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*DiskStatus); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[59].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*MemStatus); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[60].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RemoteFile); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[61].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeInfo); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[62].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTierMoveDatToRemoteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[63].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTierMoveDatToRemoteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[64].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTierMoveDatFromRemoteRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[65].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeTierMoveDatFromRemoteResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[66].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeServerStatusRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[67].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*VolumeServerStatusResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[68].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[69].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueriedStripe); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[70].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_Filter); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[71].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_InputSerialization); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[72].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_OutputSerialization); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[73].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_InputSerialization_CSVInput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[74].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_InputSerialization_JSONInput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[75].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_InputSerialization_ParquetInput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[76].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_OutputSerialization_CSVOutput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_volume_server_proto_msgTypes[77].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*QueryRequest_OutputSerialization_JSONOutput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_volume_server_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   78,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_volume_server_proto_goTypes,
+		DependencyIndexes: file_volume_server_proto_depIdxs,
+		MessageInfos:      file_volume_server_proto_msgTypes,
+	}.Build()
+	File_volume_server_proto = out.File
+	file_volume_server_proto_rawDesc = nil
+	file_volume_server_proto_goTypes = nil
+	file_volume_server_proto_depIdxs = nil
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ context.Context
-var _ grpc.ClientConn
+var _ grpc.ClientConnInterface
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion4
-
-// Client API for VolumeServer service
+const _ = grpc.SupportPackageIsVersion6
 
+// VolumeServerClient is the client API for VolumeServer service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type VolumeServerClient interface {
-	// Experts only: takes multiple fid parameters. This function does not propagate deletes to replicas.
+	//Experts only: takes multiple fid parameters. This function does not propagate deletes to replicas.
 	BatchDelete(ctx context.Context, in *BatchDeleteRequest, opts ...grpc.CallOption) (*BatchDeleteResponse, error)
 	VacuumVolumeCheck(ctx context.Context, in *VacuumVolumeCheckRequest, opts ...grpc.CallOption) (*VacuumVolumeCheckResponse, error)
 	VacuumVolumeCompact(ctx context.Context, in *VacuumVolumeCompactRequest, opts ...grpc.CallOption) (*VacuumVolumeCompactResponse, error)
 	VacuumVolumeCommit(ctx context.Context, in *VacuumVolumeCommitRequest, opts ...grpc.CallOption) (*VacuumVolumeCommitResponse, error)
 	VacuumVolumeCleanup(ctx context.Context, in *VacuumVolumeCleanupRequest, opts ...grpc.CallOption) (*VacuumVolumeCleanupResponse, error)
 	DeleteCollection(ctx context.Context, in *DeleteCollectionRequest, opts ...grpc.CallOption) (*DeleteCollectionResponse, error)
-	AssignVolume(ctx context.Context, in *AssignVolumeRequest, opts ...grpc.CallOption) (*AssignVolumeResponse, error)
+	AllocateVolume(ctx context.Context, in *AllocateVolumeRequest, opts ...grpc.CallOption) (*AllocateVolumeResponse, error)
 	VolumeSyncStatus(ctx context.Context, in *VolumeSyncStatusRequest, opts ...grpc.CallOption) (*VolumeSyncStatusResponse, error)
-	VolumeSyncIndex(ctx context.Context, in *VolumeSyncIndexRequest, opts ...grpc.CallOption) (VolumeServer_VolumeSyncIndexClient, error)
-	VolumeSyncData(ctx context.Context, in *VolumeSyncDataRequest, opts ...grpc.CallOption) (VolumeServer_VolumeSyncDataClient, error)
+	VolumeIncrementalCopy(ctx context.Context, in *VolumeIncrementalCopyRequest, opts ...grpc.CallOption) (VolumeServer_VolumeIncrementalCopyClient, error)
 	VolumeMount(ctx context.Context, in *VolumeMountRequest, opts ...grpc.CallOption) (*VolumeMountResponse, error)
 	VolumeUnmount(ctx context.Context, in *VolumeUnmountRequest, opts ...grpc.CallOption) (*VolumeUnmountResponse, error)
 	VolumeDelete(ctx context.Context, in *VolumeDeleteRequest, opts ...grpc.CallOption) (*VolumeDeleteResponse, error)
+	VolumeMarkReadonly(ctx context.Context, in *VolumeMarkReadonlyRequest, opts ...grpc.CallOption) (*VolumeMarkReadonlyResponse, error)
+	VolumeConfigure(ctx context.Context, in *VolumeConfigureRequest, opts ...grpc.CallOption) (*VolumeConfigureResponse, error)
+	// copy the .idx .dat files, and mount this volume
+	VolumeCopy(ctx context.Context, in *VolumeCopyRequest, opts ...grpc.CallOption) (*VolumeCopyResponse, error)
+	ReadVolumeFileStatus(ctx context.Context, in *ReadVolumeFileStatusRequest, opts ...grpc.CallOption) (*ReadVolumeFileStatusResponse, error)
+	CopyFile(ctx context.Context, in *CopyFileRequest, opts ...grpc.CallOption) (VolumeServer_CopyFileClient, error)
+	VolumeTailSender(ctx context.Context, in *VolumeTailSenderRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTailSenderClient, error)
+	VolumeTailReceiver(ctx context.Context, in *VolumeTailReceiverRequest, opts ...grpc.CallOption) (*VolumeTailReceiverResponse, error)
+	// erasure coding
+	VolumeEcShardsGenerate(ctx context.Context, in *VolumeEcShardsGenerateRequest, opts ...grpc.CallOption) (*VolumeEcShardsGenerateResponse, error)
+	VolumeEcShardsRebuild(ctx context.Context, in *VolumeEcShardsRebuildRequest, opts ...grpc.CallOption) (*VolumeEcShardsRebuildResponse, error)
+	VolumeEcShardsCopy(ctx context.Context, in *VolumeEcShardsCopyRequest, opts ...grpc.CallOption) (*VolumeEcShardsCopyResponse, error)
+	VolumeEcShardsDelete(ctx context.Context, in *VolumeEcShardsDeleteRequest, opts ...grpc.CallOption) (*VolumeEcShardsDeleteResponse, error)
+	VolumeEcShardsMount(ctx context.Context, in *VolumeEcShardsMountRequest, opts ...grpc.CallOption) (*VolumeEcShardsMountResponse, error)
+	VolumeEcShardsUnmount(ctx context.Context, in *VolumeEcShardsUnmountRequest, opts ...grpc.CallOption) (*VolumeEcShardsUnmountResponse, error)
+	VolumeEcShardRead(ctx context.Context, in *VolumeEcShardReadRequest, opts ...grpc.CallOption) (VolumeServer_VolumeEcShardReadClient, error)
+	VolumeEcBlobDelete(ctx context.Context, in *VolumeEcBlobDeleteRequest, opts ...grpc.CallOption) (*VolumeEcBlobDeleteResponse, error)
+	VolumeEcShardsToVolume(ctx context.Context, in *VolumeEcShardsToVolumeRequest, opts ...grpc.CallOption) (*VolumeEcShardsToVolumeResponse, error)
+	// tiered storage
+	VolumeTierMoveDatToRemote(ctx context.Context, in *VolumeTierMoveDatToRemoteRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTierMoveDatToRemoteClient, error)
+	VolumeTierMoveDatFromRemote(ctx context.Context, in *VolumeTierMoveDatFromRemoteRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTierMoveDatFromRemoteClient, error)
+	VolumeServerStatus(ctx context.Context, in *VolumeServerStatusRequest, opts ...grpc.CallOption) (*VolumeServerStatusResponse, error)
+	// <experimental> query
+	Query(ctx context.Context, in *QueryRequest, opts ...grpc.CallOption) (VolumeServer_QueryClient, error)
 }
 
 type volumeServerClient struct {
-	cc *grpc.ClientConn
+	cc grpc.ClientConnInterface
 }
 
-func NewVolumeServerClient(cc *grpc.ClientConn) VolumeServerClient {
+func NewVolumeServerClient(cc grpc.ClientConnInterface) VolumeServerClient {
 	return &volumeServerClient{cc}
 }
 
 func (c *volumeServerClient) BatchDelete(ctx context.Context, in *BatchDeleteRequest, opts ...grpc.CallOption) (*BatchDeleteResponse, error) {
 	out := new(BatchDeleteResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/BatchDelete", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/BatchDelete", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -785,7 +6387,7 @@ func (c *volumeServerClient) BatchDelete(ctx context.Context, in *BatchDeleteReq
 
 func (c *volumeServerClient) VacuumVolumeCheck(ctx context.Context, in *VacuumVolumeCheckRequest, opts ...grpc.CallOption) (*VacuumVolumeCheckResponse, error) {
 	out := new(VacuumVolumeCheckResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCheck", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCheck", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -794,7 +6396,7 @@ func (c *volumeServerClient) VacuumVolumeCheck(ctx context.Context, in *VacuumVo
 
 func (c *volumeServerClient) VacuumVolumeCompact(ctx context.Context, in *VacuumVolumeCompactRequest, opts ...grpc.CallOption) (*VacuumVolumeCompactResponse, error) {
 	out := new(VacuumVolumeCompactResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCompact", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCompact", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -803,7 +6405,7 @@ func (c *volumeServerClient) VacuumVolumeCompact(ctx context.Context, in *Vacuum
 
 func (c *volumeServerClient) VacuumVolumeCommit(ctx context.Context, in *VacuumVolumeCommitRequest, opts ...grpc.CallOption) (*VacuumVolumeCommitResponse, error) {
 	out := new(VacuumVolumeCommitResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCommit", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCommit", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -812,7 +6414,7 @@ func (c *volumeServerClient) VacuumVolumeCommit(ctx context.Context, in *VacuumV
 
 func (c *volumeServerClient) VacuumVolumeCleanup(ctx context.Context, in *VacuumVolumeCleanupRequest, opts ...grpc.CallOption) (*VacuumVolumeCleanupResponse, error) {
 	out := new(VacuumVolumeCleanupResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCleanup", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VacuumVolumeCleanup", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -821,16 +6423,16 @@ func (c *volumeServerClient) VacuumVolumeCleanup(ctx context.Context, in *Vacuum
 
 func (c *volumeServerClient) DeleteCollection(ctx context.Context, in *DeleteCollectionRequest, opts ...grpc.CallOption) (*DeleteCollectionResponse, error) {
 	out := new(DeleteCollectionResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/DeleteCollection", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/DeleteCollection", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *volumeServerClient) AssignVolume(ctx context.Context, in *AssignVolumeRequest, opts ...grpc.CallOption) (*AssignVolumeResponse, error) {
-	out := new(AssignVolumeResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/AssignVolume", in, out, c.cc, opts...)
+func (c *volumeServerClient) AllocateVolume(ctx context.Context, in *AllocateVolumeRequest, opts ...grpc.CallOption) (*AllocateVolumeResponse, error) {
+	out := new(AllocateVolumeResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/AllocateVolume", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -839,19 +6441,19 @@ func (c *volumeServerClient) AssignVolume(ctx context.Context, in *AssignVolumeR
 
 func (c *volumeServerClient) VolumeSyncStatus(ctx context.Context, in *VolumeSyncStatusRequest, opts ...grpc.CallOption) (*VolumeSyncStatusResponse, error) {
 	out := new(VolumeSyncStatusResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeSyncStatus", in, out, c.cc, opts...)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeSyncStatus", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *volumeServerClient) VolumeSyncIndex(ctx context.Context, in *VolumeSyncIndexRequest, opts ...grpc.CallOption) (VolumeServer_VolumeSyncIndexClient, error) {
-	stream, err := grpc.NewClientStream(ctx, &_VolumeServer_serviceDesc.Streams[0], c.cc, "/volume_server_pb.VolumeServer/VolumeSyncIndex", opts...)
+func (c *volumeServerClient) VolumeIncrementalCopy(ctx context.Context, in *VolumeIncrementalCopyRequest, opts ...grpc.CallOption) (VolumeServer_VolumeIncrementalCopyClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_VolumeServer_serviceDesc.Streams[0], "/volume_server_pb.VolumeServer/VolumeIncrementalCopy", opts...)
 	if err != nil {
 		return nil, err
 	}
-	x := &volumeServerVolumeSyncIndexClient{stream}
+	x := &volumeServerVolumeIncrementalCopyClient{stream}
 	if err := x.ClientStream.SendMsg(in); err != nil {
 		return nil, err
 	}
@@ -861,29 +6463,92 @@ func (c *volumeServerClient) VolumeSyncIndex(ctx context.Context, in *VolumeSync
 	return x, nil
 }
 
-type VolumeServer_VolumeSyncIndexClient interface {
-	Recv() (*VolumeSyncIndexResponse, error)
+type VolumeServer_VolumeIncrementalCopyClient interface {
+	Recv() (*VolumeIncrementalCopyResponse, error)
 	grpc.ClientStream
 }
 
-type volumeServerVolumeSyncIndexClient struct {
+type volumeServerVolumeIncrementalCopyClient struct {
 	grpc.ClientStream
 }
 
-func (x *volumeServerVolumeSyncIndexClient) Recv() (*VolumeSyncIndexResponse, error) {
-	m := new(VolumeSyncIndexResponse)
+func (x *volumeServerVolumeIncrementalCopyClient) Recv() (*VolumeIncrementalCopyResponse, error) {
+	m := new(VolumeIncrementalCopyResponse)
 	if err := x.ClientStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
 	return m, nil
 }
 
-func (c *volumeServerClient) VolumeSyncData(ctx context.Context, in *VolumeSyncDataRequest, opts ...grpc.CallOption) (VolumeServer_VolumeSyncDataClient, error) {
-	stream, err := grpc.NewClientStream(ctx, &_VolumeServer_serviceDesc.Streams[1], c.cc, "/volume_server_pb.VolumeServer/VolumeSyncData", opts...)
+func (c *volumeServerClient) VolumeMount(ctx context.Context, in *VolumeMountRequest, opts ...grpc.CallOption) (*VolumeMountResponse, error) {
+	out := new(VolumeMountResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeMount", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeUnmount(ctx context.Context, in *VolumeUnmountRequest, opts ...grpc.CallOption) (*VolumeUnmountResponse, error) {
+	out := new(VolumeUnmountResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeUnmount", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeDelete(ctx context.Context, in *VolumeDeleteRequest, opts ...grpc.CallOption) (*VolumeDeleteResponse, error) {
+	out := new(VolumeDeleteResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeDelete", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeMarkReadonly(ctx context.Context, in *VolumeMarkReadonlyRequest, opts ...grpc.CallOption) (*VolumeMarkReadonlyResponse, error) {
+	out := new(VolumeMarkReadonlyResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeMarkReadonly", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeConfigure(ctx context.Context, in *VolumeConfigureRequest, opts ...grpc.CallOption) (*VolumeConfigureResponse, error) {
+	out := new(VolumeConfigureResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeConfigure", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
-	x := &volumeServerVolumeSyncDataClient{stream}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeCopy(ctx context.Context, in *VolumeCopyRequest, opts ...grpc.CallOption) (*VolumeCopyResponse, error) {
+	out := new(VolumeCopyResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeCopy", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) ReadVolumeFileStatus(ctx context.Context, in *ReadVolumeFileStatusRequest, opts ...grpc.CallOption) (*ReadVolumeFileStatusResponse, error) {
+	out := new(ReadVolumeFileStatusResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/ReadVolumeFileStatus", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) CopyFile(ctx context.Context, in *CopyFileRequest, opts ...grpc.CallOption) (VolumeServer_CopyFileClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_VolumeServer_serviceDesc.Streams[1], "/volume_server_pb.VolumeServer/CopyFile", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &volumeServerCopyFileClient{stream}
 	if err := x.ClientStream.SendMsg(in); err != nil {
 		return nil, err
 	}
@@ -893,67 +6558,413 @@ func (c *volumeServerClient) VolumeSyncData(ctx context.Context, in *VolumeSyncD
 	return x, nil
 }
 
-type VolumeServer_VolumeSyncDataClient interface {
-	Recv() (*VolumeSyncDataResponse, error)
+type VolumeServer_CopyFileClient interface {
+	Recv() (*CopyFileResponse, error)
 	grpc.ClientStream
 }
 
-type volumeServerVolumeSyncDataClient struct {
+type volumeServerCopyFileClient struct {
 	grpc.ClientStream
 }
 
-func (x *volumeServerVolumeSyncDataClient) Recv() (*VolumeSyncDataResponse, error) {
-	m := new(VolumeSyncDataResponse)
+func (x *volumeServerCopyFileClient) Recv() (*CopyFileResponse, error) {
+	m := new(CopyFileResponse)
 	if err := x.ClientStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
 	return m, nil
 }
 
-func (c *volumeServerClient) VolumeMount(ctx context.Context, in *VolumeMountRequest, opts ...grpc.CallOption) (*VolumeMountResponse, error) {
-	out := new(VolumeMountResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeMount", in, out, c.cc, opts...)
+func (c *volumeServerClient) VolumeTailSender(ctx context.Context, in *VolumeTailSenderRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTailSenderClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_VolumeServer_serviceDesc.Streams[2], "/volume_server_pb.VolumeServer/VolumeTailSender", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &volumeServerVolumeTailSenderClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type VolumeServer_VolumeTailSenderClient interface {
+	Recv() (*VolumeTailSenderResponse, error)
+	grpc.ClientStream
+}
+
+type volumeServerVolumeTailSenderClient struct {
+	grpc.ClientStream
+}
+
+func (x *volumeServerVolumeTailSenderClient) Recv() (*VolumeTailSenderResponse, error) {
+	m := new(VolumeTailSenderResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *volumeServerClient) VolumeTailReceiver(ctx context.Context, in *VolumeTailReceiverRequest, opts ...grpc.CallOption) (*VolumeTailReceiverResponse, error) {
+	out := new(VolumeTailReceiverResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeTailReceiver", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *volumeServerClient) VolumeUnmount(ctx context.Context, in *VolumeUnmountRequest, opts ...grpc.CallOption) (*VolumeUnmountResponse, error) {
-	out := new(VolumeUnmountResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeUnmount", in, out, c.cc, opts...)
+func (c *volumeServerClient) VolumeEcShardsGenerate(ctx context.Context, in *VolumeEcShardsGenerateRequest, opts ...grpc.CallOption) (*VolumeEcShardsGenerateResponse, error) {
+	out := new(VolumeEcShardsGenerateResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsGenerate", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-func (c *volumeServerClient) VolumeDelete(ctx context.Context, in *VolumeDeleteRequest, opts ...grpc.CallOption) (*VolumeDeleteResponse, error) {
-	out := new(VolumeDeleteResponse)
-	err := grpc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeDelete", in, out, c.cc, opts...)
+func (c *volumeServerClient) VolumeEcShardsRebuild(ctx context.Context, in *VolumeEcShardsRebuildRequest, opts ...grpc.CallOption) (*VolumeEcShardsRebuildResponse, error) {
+	out := new(VolumeEcShardsRebuildResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsRebuild", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return out, nil
 }
 
-// Server API for VolumeServer service
+func (c *volumeServerClient) VolumeEcShardsCopy(ctx context.Context, in *VolumeEcShardsCopyRequest, opts ...grpc.CallOption) (*VolumeEcShardsCopyResponse, error) {
+	out := new(VolumeEcShardsCopyResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsCopy", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeEcShardsDelete(ctx context.Context, in *VolumeEcShardsDeleteRequest, opts ...grpc.CallOption) (*VolumeEcShardsDeleteResponse, error) {
+	out := new(VolumeEcShardsDeleteResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsDelete", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeEcShardsMount(ctx context.Context, in *VolumeEcShardsMountRequest, opts ...grpc.CallOption) (*VolumeEcShardsMountResponse, error) {
+	out := new(VolumeEcShardsMountResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsMount", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeEcShardsUnmount(ctx context.Context, in *VolumeEcShardsUnmountRequest, opts ...grpc.CallOption) (*VolumeEcShardsUnmountResponse, error) {
+	out := new(VolumeEcShardsUnmountResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsUnmount", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeEcShardRead(ctx context.Context, in *VolumeEcShardReadRequest, opts ...grpc.CallOption) (VolumeServer_VolumeEcShardReadClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_VolumeServer_serviceDesc.Streams[3], "/volume_server_pb.VolumeServer/VolumeEcShardRead", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &volumeServerVolumeEcShardReadClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type VolumeServer_VolumeEcShardReadClient interface {
+	Recv() (*VolumeEcShardReadResponse, error)
+	grpc.ClientStream
+}
+
+type volumeServerVolumeEcShardReadClient struct {
+	grpc.ClientStream
+}
+
+func (x *volumeServerVolumeEcShardReadClient) Recv() (*VolumeEcShardReadResponse, error) {
+	m := new(VolumeEcShardReadResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *volumeServerClient) VolumeEcBlobDelete(ctx context.Context, in *VolumeEcBlobDeleteRequest, opts ...grpc.CallOption) (*VolumeEcBlobDeleteResponse, error) {
+	out := new(VolumeEcBlobDeleteResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcBlobDelete", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeEcShardsToVolume(ctx context.Context, in *VolumeEcShardsToVolumeRequest, opts ...grpc.CallOption) (*VolumeEcShardsToVolumeResponse, error) {
+	out := new(VolumeEcShardsToVolumeResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeEcShardsToVolume", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumeServerClient) VolumeTierMoveDatToRemote(ctx context.Context, in *VolumeTierMoveDatToRemoteRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTierMoveDatToRemoteClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_VolumeServer_serviceDesc.Streams[4], "/volume_server_pb.VolumeServer/VolumeTierMoveDatToRemote", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &volumeServerVolumeTierMoveDatToRemoteClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type VolumeServer_VolumeTierMoveDatToRemoteClient interface {
+	Recv() (*VolumeTierMoveDatToRemoteResponse, error)
+	grpc.ClientStream
+}
+
+type volumeServerVolumeTierMoveDatToRemoteClient struct {
+	grpc.ClientStream
+}
+
+func (x *volumeServerVolumeTierMoveDatToRemoteClient) Recv() (*VolumeTierMoveDatToRemoteResponse, error) {
+	m := new(VolumeTierMoveDatToRemoteResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *volumeServerClient) VolumeTierMoveDatFromRemote(ctx context.Context, in *VolumeTierMoveDatFromRemoteRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTierMoveDatFromRemoteClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_VolumeServer_serviceDesc.Streams[5], "/volume_server_pb.VolumeServer/VolumeTierMoveDatFromRemote", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &volumeServerVolumeTierMoveDatFromRemoteClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type VolumeServer_VolumeTierMoveDatFromRemoteClient interface {
+	Recv() (*VolumeTierMoveDatFromRemoteResponse, error)
+	grpc.ClientStream
+}
+
+type volumeServerVolumeTierMoveDatFromRemoteClient struct {
+	grpc.ClientStream
+}
+
+func (x *volumeServerVolumeTierMoveDatFromRemoteClient) Recv() (*VolumeTierMoveDatFromRemoteResponse, error) {
+	m := new(VolumeTierMoveDatFromRemoteResponse)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+func (c *volumeServerClient) VolumeServerStatus(ctx context.Context, in *VolumeServerStatusRequest, opts ...grpc.CallOption) (*VolumeServerStatusResponse, error) {
+	out := new(VolumeServerStatusResponse)
+	err := c.cc.Invoke(ctx, "/volume_server_pb.VolumeServer/VolumeServerStatus", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
 
+func (c *volumeServerClient) Query(ctx context.Context, in *QueryRequest, opts ...grpc.CallOption) (VolumeServer_QueryClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_VolumeServer_serviceDesc.Streams[6], "/volume_server_pb.VolumeServer/Query", opts...)
+	if err != nil {
+		return nil, err
+	}
+	x := &volumeServerQueryClient{stream}
+	if err := x.ClientStream.SendMsg(in); err != nil {
+		return nil, err
+	}
+	if err := x.ClientStream.CloseSend(); err != nil {
+		return nil, err
+	}
+	return x, nil
+}
+
+type VolumeServer_QueryClient interface {
+	Recv() (*QueriedStripe, error)
+	grpc.ClientStream
+}
+
+type volumeServerQueryClient struct {
+	grpc.ClientStream
+}
+
+func (x *volumeServerQueryClient) Recv() (*QueriedStripe, error) {
+	m := new(QueriedStripe)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// VolumeServerServer is the server API for VolumeServer service.
 type VolumeServerServer interface {
-	// Experts only: takes multiple fid parameters. This function does not propagate deletes to replicas.
+	//Experts only: takes multiple fid parameters. This function does not propagate deletes to replicas.
 	BatchDelete(context.Context, *BatchDeleteRequest) (*BatchDeleteResponse, error)
 	VacuumVolumeCheck(context.Context, *VacuumVolumeCheckRequest) (*VacuumVolumeCheckResponse, error)
 	VacuumVolumeCompact(context.Context, *VacuumVolumeCompactRequest) (*VacuumVolumeCompactResponse, error)
 	VacuumVolumeCommit(context.Context, *VacuumVolumeCommitRequest) (*VacuumVolumeCommitResponse, error)
 	VacuumVolumeCleanup(context.Context, *VacuumVolumeCleanupRequest) (*VacuumVolumeCleanupResponse, error)
 	DeleteCollection(context.Context, *DeleteCollectionRequest) (*DeleteCollectionResponse, error)
-	AssignVolume(context.Context, *AssignVolumeRequest) (*AssignVolumeResponse, error)
+	AllocateVolume(context.Context, *AllocateVolumeRequest) (*AllocateVolumeResponse, error)
 	VolumeSyncStatus(context.Context, *VolumeSyncStatusRequest) (*VolumeSyncStatusResponse, error)
-	VolumeSyncIndex(*VolumeSyncIndexRequest, VolumeServer_VolumeSyncIndexServer) error
-	VolumeSyncData(*VolumeSyncDataRequest, VolumeServer_VolumeSyncDataServer) error
+	VolumeIncrementalCopy(*VolumeIncrementalCopyRequest, VolumeServer_VolumeIncrementalCopyServer) error
 	VolumeMount(context.Context, *VolumeMountRequest) (*VolumeMountResponse, error)
 	VolumeUnmount(context.Context, *VolumeUnmountRequest) (*VolumeUnmountResponse, error)
 	VolumeDelete(context.Context, *VolumeDeleteRequest) (*VolumeDeleteResponse, error)
+	VolumeMarkReadonly(context.Context, *VolumeMarkReadonlyRequest) (*VolumeMarkReadonlyResponse, error)
+	VolumeConfigure(context.Context, *VolumeConfigureRequest) (*VolumeConfigureResponse, error)
+	// copy the .idx .dat files, and mount this volume
+	VolumeCopy(context.Context, *VolumeCopyRequest) (*VolumeCopyResponse, error)
+	ReadVolumeFileStatus(context.Context, *ReadVolumeFileStatusRequest) (*ReadVolumeFileStatusResponse, error)
+	CopyFile(*CopyFileRequest, VolumeServer_CopyFileServer) error
+	VolumeTailSender(*VolumeTailSenderRequest, VolumeServer_VolumeTailSenderServer) error
+	VolumeTailReceiver(context.Context, *VolumeTailReceiverRequest) (*VolumeTailReceiverResponse, error)
+	// erasure coding
+	VolumeEcShardsGenerate(context.Context, *VolumeEcShardsGenerateRequest) (*VolumeEcShardsGenerateResponse, error)
+	VolumeEcShardsRebuild(context.Context, *VolumeEcShardsRebuildRequest) (*VolumeEcShardsRebuildResponse, error)
+	VolumeEcShardsCopy(context.Context, *VolumeEcShardsCopyRequest) (*VolumeEcShardsCopyResponse, error)
+	VolumeEcShardsDelete(context.Context, *VolumeEcShardsDeleteRequest) (*VolumeEcShardsDeleteResponse, error)
+	VolumeEcShardsMount(context.Context, *VolumeEcShardsMountRequest) (*VolumeEcShardsMountResponse, error)
+	VolumeEcShardsUnmount(context.Context, *VolumeEcShardsUnmountRequest) (*VolumeEcShardsUnmountResponse, error)
+	VolumeEcShardRead(*VolumeEcShardReadRequest, VolumeServer_VolumeEcShardReadServer) error
+	VolumeEcBlobDelete(context.Context, *VolumeEcBlobDeleteRequest) (*VolumeEcBlobDeleteResponse, error)
+	VolumeEcShardsToVolume(context.Context, *VolumeEcShardsToVolumeRequest) (*VolumeEcShardsToVolumeResponse, error)
+	// tiered storage
+	VolumeTierMoveDatToRemote(*VolumeTierMoveDatToRemoteRequest, VolumeServer_VolumeTierMoveDatToRemoteServer) error
+	VolumeTierMoveDatFromRemote(*VolumeTierMoveDatFromRemoteRequest, VolumeServer_VolumeTierMoveDatFromRemoteServer) error
+	VolumeServerStatus(context.Context, *VolumeServerStatusRequest) (*VolumeServerStatusResponse, error)
+	// <experimental> query
+	Query(*QueryRequest, VolumeServer_QueryServer) error
+}
+
+// UnimplementedVolumeServerServer can be embedded to have forward compatible implementations.
+type UnimplementedVolumeServerServer struct {
+}
+
+func (*UnimplementedVolumeServerServer) BatchDelete(context.Context, *BatchDeleteRequest) (*BatchDeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method BatchDelete not implemented")
+}
+func (*UnimplementedVolumeServerServer) VacuumVolumeCheck(context.Context, *VacuumVolumeCheckRequest) (*VacuumVolumeCheckResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VacuumVolumeCheck not implemented")
+}
+func (*UnimplementedVolumeServerServer) VacuumVolumeCompact(context.Context, *VacuumVolumeCompactRequest) (*VacuumVolumeCompactResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VacuumVolumeCompact not implemented")
+}
+func (*UnimplementedVolumeServerServer) VacuumVolumeCommit(context.Context, *VacuumVolumeCommitRequest) (*VacuumVolumeCommitResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VacuumVolumeCommit not implemented")
+}
+func (*UnimplementedVolumeServerServer) VacuumVolumeCleanup(context.Context, *VacuumVolumeCleanupRequest) (*VacuumVolumeCleanupResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VacuumVolumeCleanup not implemented")
+}
+func (*UnimplementedVolumeServerServer) DeleteCollection(context.Context, *DeleteCollectionRequest) (*DeleteCollectionResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DeleteCollection not implemented")
+}
+func (*UnimplementedVolumeServerServer) AllocateVolume(context.Context, *AllocateVolumeRequest) (*AllocateVolumeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method AllocateVolume not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeSyncStatus(context.Context, *VolumeSyncStatusRequest) (*VolumeSyncStatusResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeSyncStatus not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeIncrementalCopy(*VolumeIncrementalCopyRequest, VolumeServer_VolumeIncrementalCopyServer) error {
+	return status.Errorf(codes.Unimplemented, "method VolumeIncrementalCopy not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeMount(context.Context, *VolumeMountRequest) (*VolumeMountResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeMount not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeUnmount(context.Context, *VolumeUnmountRequest) (*VolumeUnmountResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeUnmount not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeDelete(context.Context, *VolumeDeleteRequest) (*VolumeDeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeDelete not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeMarkReadonly(context.Context, *VolumeMarkReadonlyRequest) (*VolumeMarkReadonlyResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeMarkReadonly not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeConfigure(context.Context, *VolumeConfigureRequest) (*VolumeConfigureResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeConfigure not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeCopy(context.Context, *VolumeCopyRequest) (*VolumeCopyResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeCopy not implemented")
+}
+func (*UnimplementedVolumeServerServer) ReadVolumeFileStatus(context.Context, *ReadVolumeFileStatusRequest) (*ReadVolumeFileStatusResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ReadVolumeFileStatus not implemented")
+}
+func (*UnimplementedVolumeServerServer) CopyFile(*CopyFileRequest, VolumeServer_CopyFileServer) error {
+	return status.Errorf(codes.Unimplemented, "method CopyFile not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeTailSender(*VolumeTailSenderRequest, VolumeServer_VolumeTailSenderServer) error {
+	return status.Errorf(codes.Unimplemented, "method VolumeTailSender not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeTailReceiver(context.Context, *VolumeTailReceiverRequest) (*VolumeTailReceiverResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeTailReceiver not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardsGenerate(context.Context, *VolumeEcShardsGenerateRequest) (*VolumeEcShardsGenerateResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcShardsGenerate not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardsRebuild(context.Context, *VolumeEcShardsRebuildRequest) (*VolumeEcShardsRebuildResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcShardsRebuild not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardsCopy(context.Context, *VolumeEcShardsCopyRequest) (*VolumeEcShardsCopyResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcShardsCopy not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardsDelete(context.Context, *VolumeEcShardsDeleteRequest) (*VolumeEcShardsDeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcShardsDelete not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardsMount(context.Context, *VolumeEcShardsMountRequest) (*VolumeEcShardsMountResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcShardsMount not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardsUnmount(context.Context, *VolumeEcShardsUnmountRequest) (*VolumeEcShardsUnmountResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcShardsUnmount not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardRead(*VolumeEcShardReadRequest, VolumeServer_VolumeEcShardReadServer) error {
+	return status.Errorf(codes.Unimplemented, "method VolumeEcShardRead not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcBlobDelete(context.Context, *VolumeEcBlobDeleteRequest) (*VolumeEcBlobDeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcBlobDelete not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeEcShardsToVolume(context.Context, *VolumeEcShardsToVolumeRequest) (*VolumeEcShardsToVolumeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeEcShardsToVolume not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeTierMoveDatToRemote(*VolumeTierMoveDatToRemoteRequest, VolumeServer_VolumeTierMoveDatToRemoteServer) error {
+	return status.Errorf(codes.Unimplemented, "method VolumeTierMoveDatToRemote not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeTierMoveDatFromRemote(*VolumeTierMoveDatFromRemoteRequest, VolumeServer_VolumeTierMoveDatFromRemoteServer) error {
+	return status.Errorf(codes.Unimplemented, "method VolumeTierMoveDatFromRemote not implemented")
+}
+func (*UnimplementedVolumeServerServer) VolumeServerStatus(context.Context, *VolumeServerStatusRequest) (*VolumeServerStatusResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeServerStatus not implemented")
+}
+func (*UnimplementedVolumeServerServer) Query(*QueryRequest, VolumeServer_QueryServer) error {
+	return status.Errorf(codes.Unimplemented, "method Query not implemented")
 }
 
 func RegisterVolumeServerServer(s *grpc.Server, srv VolumeServerServer) {
@@ -1068,20 +7079,20 @@ func _VolumeServer_DeleteCollection_Handler(srv interface{}, ctx context.Context
 	return interceptor(ctx, in, info, handler)
 }
 
-func _VolumeServer_AssignVolume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(AssignVolumeRequest)
+func _VolumeServer_AllocateVolume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(AllocateVolumeRequest)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
 	if interceptor == nil {
-		return srv.(VolumeServerServer).AssignVolume(ctx, in)
+		return srv.(VolumeServerServer).AllocateVolume(ctx, in)
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/volume_server_pb.VolumeServer/AssignVolume",
+		FullMethod: "/volume_server_pb.VolumeServer/AllocateVolume",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(VolumeServerServer).AssignVolume(ctx, req.(*AssignVolumeRequest))
+		return srv.(VolumeServerServer).AllocateVolume(ctx, req.(*AllocateVolumeRequest))
 	}
 	return interceptor(ctx, in, info, handler)
 }
@@ -1104,45 +7115,24 @@ func _VolumeServer_VolumeSyncStatus_Handler(srv interface{}, ctx context.Context
 	return interceptor(ctx, in, info, handler)
 }
 
-func _VolumeServer_VolumeSyncIndex_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(VolumeSyncIndexRequest)
-	if err := stream.RecvMsg(m); err != nil {
-		return err
-	}
-	return srv.(VolumeServerServer).VolumeSyncIndex(m, &volumeServerVolumeSyncIndexServer{stream})
-}
-
-type VolumeServer_VolumeSyncIndexServer interface {
-	Send(*VolumeSyncIndexResponse) error
-	grpc.ServerStream
-}
-
-type volumeServerVolumeSyncIndexServer struct {
-	grpc.ServerStream
-}
-
-func (x *volumeServerVolumeSyncIndexServer) Send(m *VolumeSyncIndexResponse) error {
-	return x.ServerStream.SendMsg(m)
-}
-
-func _VolumeServer_VolumeSyncData_Handler(srv interface{}, stream grpc.ServerStream) error {
-	m := new(VolumeSyncDataRequest)
+func _VolumeServer_VolumeIncrementalCopy_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(VolumeIncrementalCopyRequest)
 	if err := stream.RecvMsg(m); err != nil {
 		return err
 	}
-	return srv.(VolumeServerServer).VolumeSyncData(m, &volumeServerVolumeSyncDataServer{stream})
+	return srv.(VolumeServerServer).VolumeIncrementalCopy(m, &volumeServerVolumeIncrementalCopyServer{stream})
 }
 
-type VolumeServer_VolumeSyncDataServer interface {
-	Send(*VolumeSyncDataResponse) error
+type VolumeServer_VolumeIncrementalCopyServer interface {
+	Send(*VolumeIncrementalCopyResponse) error
 	grpc.ServerStream
 }
 
-type volumeServerVolumeSyncDataServer struct {
+type volumeServerVolumeIncrementalCopyServer struct {
 	grpc.ServerStream
 }
 
-func (x *volumeServerVolumeSyncDataServer) Send(m *VolumeSyncDataResponse) error {
+func (x *volumeServerVolumeIncrementalCopyServer) Send(m *VolumeIncrementalCopyResponse) error {
 	return x.ServerStream.SendMsg(m)
 }
 
@@ -1200,6 +7190,384 @@ func _VolumeServer_VolumeDelete_Handler(srv interface{}, ctx context.Context, de
 	return interceptor(ctx, in, info, handler)
 }
 
+func _VolumeServer_VolumeMarkReadonly_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeMarkReadonlyRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeMarkReadonly(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeMarkReadonly",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeMarkReadonly(ctx, req.(*VolumeMarkReadonlyRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeConfigure_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeConfigureRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeConfigure(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeConfigure",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeConfigure(ctx, req.(*VolumeConfigureRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeCopy_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeCopyRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeCopy(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeCopy",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeCopy(ctx, req.(*VolumeCopyRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_ReadVolumeFileStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ReadVolumeFileStatusRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).ReadVolumeFileStatus(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/ReadVolumeFileStatus",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).ReadVolumeFileStatus(ctx, req.(*ReadVolumeFileStatusRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_CopyFile_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(CopyFileRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(VolumeServerServer).CopyFile(m, &volumeServerCopyFileServer{stream})
+}
+
+type VolumeServer_CopyFileServer interface {
+	Send(*CopyFileResponse) error
+	grpc.ServerStream
+}
+
+type volumeServerCopyFileServer struct {
+	grpc.ServerStream
+}
+
+func (x *volumeServerCopyFileServer) Send(m *CopyFileResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _VolumeServer_VolumeTailSender_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(VolumeTailSenderRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(VolumeServerServer).VolumeTailSender(m, &volumeServerVolumeTailSenderServer{stream})
+}
+
+type VolumeServer_VolumeTailSenderServer interface {
+	Send(*VolumeTailSenderResponse) error
+	grpc.ServerStream
+}
+
+type volumeServerVolumeTailSenderServer struct {
+	grpc.ServerStream
+}
+
+func (x *volumeServerVolumeTailSenderServer) Send(m *VolumeTailSenderResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _VolumeServer_VolumeTailReceiver_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeTailReceiverRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeTailReceiver(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeTailReceiver",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeTailReceiver(ctx, req.(*VolumeTailReceiverRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardsGenerate_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcShardsGenerateRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcShardsGenerate(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsGenerate",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcShardsGenerate(ctx, req.(*VolumeEcShardsGenerateRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardsRebuild_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcShardsRebuildRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcShardsRebuild(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsRebuild",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcShardsRebuild(ctx, req.(*VolumeEcShardsRebuildRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardsCopy_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcShardsCopyRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcShardsCopy(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsCopy",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcShardsCopy(ctx, req.(*VolumeEcShardsCopyRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardsDelete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcShardsDeleteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcShardsDelete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsDelete",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcShardsDelete(ctx, req.(*VolumeEcShardsDeleteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardsMount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcShardsMountRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcShardsMount(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsMount",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcShardsMount(ctx, req.(*VolumeEcShardsMountRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardsUnmount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcShardsUnmountRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcShardsUnmount(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsUnmount",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcShardsUnmount(ctx, req.(*VolumeEcShardsUnmountRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardRead_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(VolumeEcShardReadRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(VolumeServerServer).VolumeEcShardRead(m, &volumeServerVolumeEcShardReadServer{stream})
+}
+
+type VolumeServer_VolumeEcShardReadServer interface {
+	Send(*VolumeEcShardReadResponse) error
+	grpc.ServerStream
+}
+
+type volumeServerVolumeEcShardReadServer struct {
+	grpc.ServerStream
+}
+
+func (x *volumeServerVolumeEcShardReadServer) Send(m *VolumeEcShardReadResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _VolumeServer_VolumeEcBlobDelete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcBlobDeleteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcBlobDelete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcBlobDelete",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcBlobDelete(ctx, req.(*VolumeEcBlobDeleteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeEcShardsToVolume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeEcShardsToVolumeRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeEcShardsToVolume(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeEcShardsToVolume",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeEcShardsToVolume(ctx, req.(*VolumeEcShardsToVolumeRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_VolumeTierMoveDatToRemote_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(VolumeTierMoveDatToRemoteRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(VolumeServerServer).VolumeTierMoveDatToRemote(m, &volumeServerVolumeTierMoveDatToRemoteServer{stream})
+}
+
+type VolumeServer_VolumeTierMoveDatToRemoteServer interface {
+	Send(*VolumeTierMoveDatToRemoteResponse) error
+	grpc.ServerStream
+}
+
+type volumeServerVolumeTierMoveDatToRemoteServer struct {
+	grpc.ServerStream
+}
+
+func (x *volumeServerVolumeTierMoveDatToRemoteServer) Send(m *VolumeTierMoveDatToRemoteResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _VolumeServer_VolumeTierMoveDatFromRemote_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(VolumeTierMoveDatFromRemoteRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(VolumeServerServer).VolumeTierMoveDatFromRemote(m, &volumeServerVolumeTierMoveDatFromRemoteServer{stream})
+}
+
+type VolumeServer_VolumeTierMoveDatFromRemoteServer interface {
+	Send(*VolumeTierMoveDatFromRemoteResponse) error
+	grpc.ServerStream
+}
+
+type volumeServerVolumeTierMoveDatFromRemoteServer struct {
+	grpc.ServerStream
+}
+
+func (x *volumeServerVolumeTierMoveDatFromRemoteServer) Send(m *VolumeTierMoveDatFromRemoteResponse) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func _VolumeServer_VolumeServerStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeServerStatusRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumeServerServer).VolumeServerStatus(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/volume_server_pb.VolumeServer/VolumeServerStatus",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumeServerServer).VolumeServerStatus(ctx, req.(*VolumeServerStatusRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _VolumeServer_Query_Handler(srv interface{}, stream grpc.ServerStream) error {
+	m := new(QueryRequest)
+	if err := stream.RecvMsg(m); err != nil {
+		return err
+	}
+	return srv.(VolumeServerServer).Query(m, &volumeServerQueryServer{stream})
+}
+
+type VolumeServer_QueryServer interface {
+	Send(*QueriedStripe) error
+	grpc.ServerStream
+}
+
+type volumeServerQueryServer struct {
+	grpc.ServerStream
+}
+
+func (x *volumeServerQueryServer) Send(m *QueriedStripe) error {
+	return x.ServerStream.SendMsg(m)
+}
+
 var _VolumeServer_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "volume_server_pb.VolumeServer",
 	HandlerType: (*VolumeServerServer)(nil),
@@ -1229,8 +7597,8 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
 			Handler:    _VolumeServer_DeleteCollection_Handler,
 		},
 		{
-			MethodName: "AssignVolume",
-			Handler:    _VolumeServer_AssignVolume_Handler,
+			MethodName: "AllocateVolume",
+			Handler:    _VolumeServer_AllocateVolume_Handler,
 		},
 		{
 			MethodName: "VolumeSyncStatus",
@@ -1248,90 +7616,99 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
 			MethodName: "VolumeDelete",
 			Handler:    _VolumeServer_VolumeDelete_Handler,
 		},
+		{
+			MethodName: "VolumeMarkReadonly",
+			Handler:    _VolumeServer_VolumeMarkReadonly_Handler,
+		},
+		{
+			MethodName: "VolumeConfigure",
+			Handler:    _VolumeServer_VolumeConfigure_Handler,
+		},
+		{
+			MethodName: "VolumeCopy",
+			Handler:    _VolumeServer_VolumeCopy_Handler,
+		},
+		{
+			MethodName: "ReadVolumeFileStatus",
+			Handler:    _VolumeServer_ReadVolumeFileStatus_Handler,
+		},
+		{
+			MethodName: "VolumeTailReceiver",
+			Handler:    _VolumeServer_VolumeTailReceiver_Handler,
+		},
+		{
+			MethodName: "VolumeEcShardsGenerate",
+			Handler:    _VolumeServer_VolumeEcShardsGenerate_Handler,
+		},
+		{
+			MethodName: "VolumeEcShardsRebuild",
+			Handler:    _VolumeServer_VolumeEcShardsRebuild_Handler,
+		},
+		{
+			MethodName: "VolumeEcShardsCopy",
+			Handler:    _VolumeServer_VolumeEcShardsCopy_Handler,
+		},
+		{
+			MethodName: "VolumeEcShardsDelete",
+			Handler:    _VolumeServer_VolumeEcShardsDelete_Handler,
+		},
+		{
+			MethodName: "VolumeEcShardsMount",
+			Handler:    _VolumeServer_VolumeEcShardsMount_Handler,
+		},
+		{
+			MethodName: "VolumeEcShardsUnmount",
+			Handler:    _VolumeServer_VolumeEcShardsUnmount_Handler,
+		},
+		{
+			MethodName: "VolumeEcBlobDelete",
+			Handler:    _VolumeServer_VolumeEcBlobDelete_Handler,
+		},
+		{
+			MethodName: "VolumeEcShardsToVolume",
+			Handler:    _VolumeServer_VolumeEcShardsToVolume_Handler,
+		},
+		{
+			MethodName: "VolumeServerStatus",
+			Handler:    _VolumeServer_VolumeServerStatus_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
-			StreamName:    "VolumeSyncIndex",
-			Handler:       _VolumeServer_VolumeSyncIndex_Handler,
+			StreamName:    "VolumeIncrementalCopy",
+			Handler:       _VolumeServer_VolumeIncrementalCopy_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "CopyFile",
+			Handler:       _VolumeServer_CopyFile_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "VolumeTailSender",
+			Handler:       _VolumeServer_VolumeTailSender_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "VolumeEcShardRead",
+			Handler:       _VolumeServer_VolumeEcShardRead_Handler,
 			ServerStreams: true,
 		},
 		{
-			StreamName:    "VolumeSyncData",
-			Handler:       _VolumeServer_VolumeSyncData_Handler,
+			StreamName:    "VolumeTierMoveDatToRemote",
+			Handler:       _VolumeServer_VolumeTierMoveDatToRemote_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "VolumeTierMoveDatFromRemote",
+			Handler:       _VolumeServer_VolumeTierMoveDatFromRemote_Handler,
+			ServerStreams: true,
+		},
+		{
+			StreamName:    "Query",
+			Handler:       _VolumeServer_Query_Handler,
 			ServerStreams: true,
 		},
 	},
 	Metadata: "volume_server.proto",
 }
-
-func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
-
-var fileDescriptor0 = []byte{
-	// 1044 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xa4, 0x57, 0xdd, 0x72, 0xdb, 0x44,
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-	0x58, 0xef, 0xd0, 0x36, 0xb4, 0x48, 0x14, 0x85, 0x91, 0xd9, 0x90, 0xea, 0x6a, 0x83, 0x10, 0x34,
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diff --git a/weed/pb/volume_server_pb/volume_server_helper.go b/weed/pb/volume_server_pb/volume_server_helper.go
new file mode 100644
index 000000000..356be27ff
--- /dev/null
+++ b/weed/pb/volume_server_pb/volume_server_helper.go
@@ -0,0 +1,5 @@
+package volume_server_pb
+
+func (m *RemoteFile) BackendName() string {
+	return m.BackendType + "." + m.BackendId
+}