1 files changed, 0 insertions, 81 deletions
diff --git a/go/storage/volume_super_block.go b/go/storage/volume_super_block.go
deleted file mode 100644
index e37360075..000000000
--- a/go/storage/volume_super_block.go
+++ /dev/null
@@ -1,81 +0,0 @@
-package storage
-
-import (
-	"fmt"
-	"os"
-
-	"github.com/chrislusf/seaweedfs/go/glog"
-	"github.com/chrislusf/seaweedfs/go/util"
-)
-
-const (
-	SuperBlockSize = 8
-)
-
-/*
-* Super block currently has 8 bytes allocated for each volume.
-* Byte 0: version, 1 or 2
-* Byte 1: Replica Placement strategy, 000, 001, 002, 010, etc
-* Byte 2 and byte 3: Time to live. See TTL for definition
-* Byte 4 and byte 5: The number of times the volume has been compacted.
-* Rest bytes: Reserved
- */
-type SuperBlock struct {
-	version          Version
-	ReplicaPlacement *ReplicaPlacement
-	Ttl              *TTL
-	CompactRevision  uint16
-}
-
-func (s *SuperBlock) Version() Version {
-	return s.version
-}
-func (s *SuperBlock) Bytes() []byte {
-	header := make([]byte, SuperBlockSize)
-	header[0] = byte(s.version)
-	header[1] = s.ReplicaPlacement.Byte()
-	s.Ttl.ToBytes(header[2:4])
-	util.Uint16toBytes(header[4:6], s.CompactRevision)
-	return header
-}
-
-func (v *Volume) maybeWriteSuperBlock() error {
-	stat, e := v.dataFile.Stat()
-	if e != nil {
-		glog.V(0).Infof("failed to stat datafile %s: %v", v.dataFile, e)
-		return e
-	}
-	if stat.Size() == 0 {
-		v.SuperBlock.version = CurrentVersion
-		_, e = v.dataFile.Write(v.SuperBlock.Bytes())
-		if e != nil && os.IsPermission(e) {
-			//read-only, but zero length - recreate it!
-			if v.dataFile, e = os.Create(v.dataFile.Name()); e == nil {
-				if _, e = v.dataFile.Write(v.SuperBlock.Bytes()); e == nil {
-					v.readOnly = false
-				}
-			}
-		}
-	}
-	return e
-}
-func (v *Volume) readSuperBlock() (err error) {
-	if _, err = v.dataFile.Seek(0, 0); err != nil {
-		return fmt.Errorf("cannot seek to the beginning of %s: %v", v.dataFile.Name(), err)
-	}
-	header := make([]byte, SuperBlockSize)
-	if _, e := v.dataFile.Read(header); e != nil {
-		return fmt.Errorf("cannot read volume %d super block: %v", v.Id, e)
-	}
-	v.SuperBlock, err = ParseSuperBlock(header)
-	return err
-}
-func ParseSuperBlock(header []byte) (superBlock SuperBlock, err error) {
-	superBlock.version = Version(header[0])
-	if superBlock.ReplicaPlacement, err = NewReplicaPlacementFromByte(header[1]); err != nil {
-		err = fmt.Errorf("cannot read replica type: %s", err.Error())
-	}
-	superBlock.Ttl = LoadTTLFromBytes(header[2:4])
-	superBlock.CompactRevision = util.BytesToUint16(header[4:6])
-	return
-}