4 files changed, 19 insertions, 2 deletions
diff --git a/weed/filer/entry.go b/weed/filer/entry.go
index 23eb2091b..ddb339bfb 100644
--- a/weed/filer/entry.go
+++ b/weed/filer/entry.go
@@ -25,6 +25,7 @@ type Attr struct {
 	Md5           []byte
 	FileSize      uint64
 	Rdev          uint32
+	Inode         uint64
 }
 
 func (attr Attr) IsDirectory() bool {
diff --git a/weed/filer/entry_codec.go b/weed/filer/entry_codec.go
index ddbb5b08c..683e83cde 100644
--- a/weed/filer/entry_codec.go
+++ b/weed/filer/entry_codec.go
@@ -49,6 +49,7 @@ func EntryAttributeToPb(entry *Entry) *filer_pb.FuseAttributes {
 		Md5:           entry.Attr.Md5,
 		FileSize:      entry.Attr.FileSize,
 		Rdev:          entry.Attr.Rdev,
+		Inode:         entry.Attr.Inode,
 	}
 }
 
@@ -76,6 +77,7 @@ func PbToEntryAttribute(attr *filer_pb.FuseAttributes) Attr {
 	t.Md5 = attr.Md5
 	t.FileSize = attr.FileSize
 	t.Rdev = attr.Rdev
+	t.Inode = attr.Inode
 
 	return t
 }
diff --git a/weed/filer/filer_delete_entry.go b/weed/filer/filer_delete_entry.go
index bda69b15f..425da7cea 100644
--- a/weed/filer/filer_delete_entry.go
+++ b/weed/filer/filer_delete_entry.go
@@ -9,8 +9,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
-type HardLinkId []byte
-
 const (
 	MsgFailDelNonEmptyFolder = "fail to delete non-empty folder"
 )
diff --git a/weed/filer/filer_hardlink.go b/weed/filer/filer_hardlink.go
new file mode 100644
index 000000000..7a91602fd
--- /dev/null
+++ b/weed/filer/filer_hardlink.go
@@ -0,0 +1,16 @@
+package filer
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+const (
+	HARD_LINK_MARKER = '\x01'
+)
+
+type HardLinkId []byte // 16 bytes + 1 marker byte
+
+func NewHardLinkId() HardLinkId {
+	bytes := append(util.RandomBytes(16), HARD_LINK_MARKER)
+	return bytes
+}