diff --git a/weed/server/volume_server_handlers_write.go b/weed/server/volume_server_handlers_write.go
index 55ef2a613..02eb6dff9 100644
--- a/weed/server/volume_server_handlers_write.go
+++ b/weed/server/volume_server_handlers_write.go
@@ -9,8 +9,8 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/operation"
 	"github.com/chrislusf/seaweedfs/weed/storage"
 	"github.com/chrislusf/seaweedfs/weed/topology"
-	"time"
 	"strconv"
+	"time"
 )
 
 func (vs *VolumeServer) PostHandler(w http.ResponseWriter, r *http.Request) {
@@ -55,7 +55,7 @@ func (vs *VolumeServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 	volumeId, _ := storage.NewVolumeId(vid)
 	n.ParsePath(fid)
 
-	glog.V(2).Infoln("deleting", n)
+	glog.V(2).Infof("volume %d deleting %s", vid, n)
 
 	cookie := n.Cookie
 
diff --git a/weed/storage/file_id.go b/weed/storage/file_id.go
index 0871bfb25..37dcb7c70 100644
--- a/weed/storage/file_id.go
+++ b/weed/storage/file_id.go
@@ -20,11 +20,15 @@ func NewFileId(VolumeId VolumeId, key uint64, cookie uint32) *FileId {
 }
 
 func (n *FileId) String() string {
+	return n.VolumeId.String() + "," + formatNeedleIdCookie(n.Key, n.Cookie)
+}
+
+func formatNeedleIdCookie(key NeedleId, cookie Cookie) string {
 	bytes := make([]byte, NeedleIdSize+CookieSize)
-	NeedleIdToBytes(bytes[0:NeedleIdSize], n.Key)
-	CookieToBytes(bytes[NeedleIdSize:NeedleIdSize+CookieSize], n.Cookie)
+	NeedleIdToBytes(bytes[0:NeedleIdSize], key)
+	CookieToBytes(bytes[NeedleIdSize:NeedleIdSize+CookieSize], cookie)
 	nonzero_index := 0
 	for ; bytes[nonzero_index] == 0; nonzero_index++ {
 	}
-	return n.VolumeId.String() + "," + hex.EncodeToString(bytes[nonzero_index:])
+	return hex.EncodeToString(bytes[nonzero_index:])
 }
diff --git a/weed/storage/needle.go b/weed/storage/needle.go
index 46ba933ca..31bada091 100644
--- a/weed/storage/needle.go
+++ b/weed/storage/needle.go
@@ -29,12 +29,12 @@ type Needle struct {
 
 	DataSize     uint32 `comment:"Data size"` //version2
 	Data         []byte `comment:"The actual file data"`
-	Flags        byte   `comment:"boolean flags"`          //version2
-	NameSize     uint8                                     //version2
+	Flags        byte   `comment:"boolean flags"` //version2
+	NameSize     uint8  //version2
 	Name         []byte `comment:"maximum 256 characters"` //version2
-	MimeSize     uint8                                     //version2
+	MimeSize     uint8  //version2
 	Mime         []byte `comment:"maximum 256 characters"` //version2
-	PairsSize    uint16                                    //version2
+	PairsSize    uint16 //version2
 	Pairs        []byte `comment:"additional name value pairs, json format, maximum 64kB"`
 	LastModified uint64 //only store LastModifiedBytesLength bytes, which is 5 bytes to disk
 	Ttl          *TTL
@@ -44,7 +44,7 @@ type Needle struct {
 }
 
 func (n *Needle) String() (str string) {
-	str = fmt.Sprintf("Cookie:%d, Id:%d, Size:%d, DataSize:%d, Name: %s, Mime: %s", n.Cookie, n.Id, n.Size, n.DataSize, n.Name, n.Mime)
+	str = fmt.Sprintf("%s Size:%d, DataSize:%d, Name:%s, Mime:%s", formatNeedleIdCookie(n.Id, n.Cookie), n.Size, n.DataSize, n.Name, n.Mime)
 	return
 }
 
@@ -134,7 +134,7 @@ func NewNeedle(r *http.Request, fixJpgOrientation bool) (n *Needle, e error) {
 	dotSep := strings.LastIndex(r.URL.Path, ".")
 	fid := r.URL.Path[commaSep+1:]
 	if dotSep > 0 {
-		fid = r.URL.Path[commaSep+1: dotSep]
+		fid = r.URL.Path[commaSep+1 : dotSep]
 	}
 
 	e = n.ParsePath(fid)