shell: show which server holds the lock

fix https://github.com/chrislusf/seaweedfs/issues/1983

5 files changed, 128 insertions, 109 deletions

diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index 6a1758ccc..cdb49d1e3 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -288,6 +288,7 @@ message LeaseAdminTokenRequest {
     int64 previous_token = 1;
     int64 previous_lock_time = 2;
     string lock_name = 3;
+    string client_name = 4;
 }
 message LeaseAdminTokenResponse {
     int64 token = 1;
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 7e1f282dd..29d8499f8 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -2468,6 +2468,7 @@ type LeaseAdminTokenRequest struct {
 	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"`
+	ClientName       string `protobuf:"bytes,4,opt,name=client_name,json=clientName,proto3" json:"client_name,omitempty"`
 }
 
 func (x *LeaseAdminTokenRequest) Reset() {
@@ -2523,6 +2524,13 @@ func (x *LeaseAdminTokenRequest) GetLockName() string {
 	return ""
 }
 
+func (x *LeaseAdminTokenRequest) GetClientName() string {
+	if x != nil {
+		return x.ClientName
+	}
+	return ""
+}
+
 type LeaseAdminTokenResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -3268,7 +3276,7 @@ var file_master_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/weed/server/master_grpc_server_admin.go b/weed/server/master_grpc_server_admin.go
index 7e7dcb36b..93c9e4e4e 100644
--- a/weed/server/master_grpc_server_admin.go
+++ b/weed/server/master_grpc_server_admin.go
@@ -3,6 +3,7 @@ package weed_server
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"math/rand"
 	"sync"
 	"time"
@@ -60,6 +61,7 @@ const (
 type AdminLock struct {
 	accessSecret   int64
 	accessLockTime time.Time
+	lastClient     string
 }
 
 type AdminLocks struct {
@@ -73,14 +75,15 @@ func NewAdminLocks() *AdminLocks {
 	}
 }
 
-func (locks *AdminLocks) isLocked(lockName string) bool {
+func (locks *AdminLocks) isLocked(lockName string) (clientName string, isLocked bool) {
 	locks.RLock()
 	defer locks.RUnlock()
 	adminLock, found := locks.locks[lockName]
 	if !found {
-		return false
+		return "", false
 	}
-	return adminLock.accessLockTime.Add(LockDuration).After(time.Now())
+	glog.V(4).Infof("isLocked %v", adminLock.lastClient)
+	return adminLock.lastClient, adminLock.accessLockTime.Add(LockDuration).After(time.Now())
 }
 
 func (locks *AdminLocks) isValidToken(lockName string, ts time.Time, token int64) bool {
@@ -93,12 +96,13 @@ func (locks *AdminLocks) isValidToken(lockName string, ts time.Time, token int64
 	return adminLock.accessLockTime.Equal(ts) && adminLock.accessSecret == token
 }
 
-func (locks *AdminLocks) generateToken(lockName string) (ts time.Time, token int64) {
+func (locks *AdminLocks) generateToken(lockName string, clientName string) (ts time.Time, token int64) {
 	locks.Lock()
 	defer locks.Unlock()
 	lock := &AdminLock{
 		accessSecret:   rand.Int63(),
 		accessLockTime: time.Now(),
+		lastClient:     clientName,
 	}
 	locks.locks[lockName] = lock
 	return lock.accessLockTime, lock.accessSecret
@@ -113,18 +117,19 @@ func (locks *AdminLocks) deleteLock(lockName string) {
 func (ms *MasterServer) LeaseAdminToken(ctx context.Context, req *master_pb.LeaseAdminTokenRequest) (*master_pb.LeaseAdminTokenResponse, error) {
 	resp := &master_pb.LeaseAdminTokenResponse{}
 
-	if ms.adminLocks.isLocked(req.LockName) {
+	if lastClient, isLocked := ms.adminLocks.isLocked(req.LockName); isLocked {
+		glog.V(4).Infof("LeaseAdminToken %v", lastClient)
 		if req.PreviousToken != 0 && ms.adminLocks.isValidToken(req.LockName, time.Unix(0, req.PreviousLockTime), req.PreviousToken) {
 			// for renew
-			ts, token := ms.adminLocks.generateToken(req.LockName)
+			ts, token := ms.adminLocks.generateToken(req.LockName, req.ClientName)
 			resp.Token, resp.LockTsNs = token, ts.UnixNano()
 			return resp, nil
 		}
 		// refuse since still locked
-		return resp, fmt.Errorf("already locked")
+		return resp, fmt.Errorf("already locked by " + lastClient)
 	}
 	// for fresh lease request
-	ts, token := ms.adminLocks.generateToken(req.LockName)
+	ts, token := ms.adminLocks.generateToken(req.LockName, req.ClientName)
 	resp.Token, resp.LockTsNs = token, ts.UnixNano()
 	return resp, nil
 }
diff --git a/weed/shell/command_fs_lock_unlock.go b/weed/shell/command_fs_lock_unlock.go
index 8a6e8f71b..33458bb6f 100644
--- a/weed/shell/command_fs_lock_unlock.go
+++ b/weed/shell/command_fs_lock_unlock.go
@@ -1,6 +1,7 @@
 package shell
 
 import (
+	"github.com/chrislusf/seaweedfs/weed/util"
 	"io"
 )
 
@@ -26,7 +27,7 @@ func (c *commandLock) Help() string {
 
 func (c *commandLock) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
 
-	commandEnv.locker.RequestLock()
+	commandEnv.locker.RequestLock(util.DetectedHostAddress())
 
 	return nil
 }
diff --git a/weed/wdclient/exclusive_locks/exclusive_locker.go b/weed/wdclient/exclusive_locks/exclusive_locker.go
index d477a6b2d..5b5fa2704 100644
--- a/weed/wdclient/exclusive_locks/exclusive_locker.go
+++ b/weed/wdclient/exclusive_locks/exclusive_locker.go
@@ -41,7 +41,7 @@ func (l *ExclusiveLocker) GetToken() (token int64, lockTsNs int64) {
 	return atomic.LoadInt64(&l.token), atomic.LoadInt64(&l.lockTsNs)
 }
 
-func (l *ExclusiveLocker) RequestLock() {
+func (l *ExclusiveLocker) RequestLock(clientName string) {
 	if l.isLocking {
 		return
 	}
@@ -56,6 +56,7 @@ func (l *ExclusiveLocker) RequestLock() {
 				PreviousToken:    atomic.LoadInt64(&l.token),
 				PreviousLockTime: atomic.LoadInt64(&l.lockTsNs),
 				LockName:         AdminLockName,
+				ClientName:       clientName,
 			})
 			if err == nil {
 				atomic.StoreInt64(&l.token, resp.Token)
@@ -63,7 +64,7 @@ func (l *ExclusiveLocker) RequestLock() {
 			}
 			return err
 		}); err != nil {
-			// println("leasing problem", err.Error())
+			println("lock:", err.Error())
 			time.Sleep(InitLockInteval)
 		} else {
 			break
@@ -83,6 +84,7 @@ func (l *ExclusiveLocker) RequestLock() {
 					PreviousToken:    atomic.LoadInt64(&l.token),
 					PreviousLockTime: atomic.LoadInt64(&l.lockTsNs),
 					LockName:         AdminLockName,
+					ClientName:       clientName,
 				})
 				if err == nil {
 					atomic.StoreInt64(&l.token, resp.Token)