reporting volume size as early as possible

weed-fs/src/cmd/weed/master.go

@@ -114,6 +114,9 @@ func dirJoinHandler(w http.ResponseWriter, r *http.Request) {
 	json.Unmarshal([]byte(r.FormValue("volumes")), volumes)
 	debug(s, "volumes", r.FormValue("volumes"))
 	topo.RegisterVolumes(*volumes, ip, port, publicUrl, maxVolumeCount)
+    m := make(map[string]interface{})
+    m["VolumeSizeLimit"] = uint64(*volumeSizeLimitMB)*1024*1024
+    writeJson(w, r, m)
 }
 
 func dirStatusHandler(w http.ResponseWriter, r *http.Request) {

weed-fs/src/cmd/weed/volume.go

@@ -317,8 +317,9 @@ func runVolume(cmd *Command, args []string) bool {
 
 	go func() {
 		connected := true
+		store.SetMaster(*masterNode)
 		for {
-			err := store.Join(*masterNode)
+			err := store.Join()
 			if err == nil {
 				if !connected {
 					connected = true

weed-fs/src/pkg/storage/needle_map.go

@@ -15,7 +15,8 @@ type NeedleMap struct {
 
 	deletionCounter     int
 	fileCounter         int
-	deletionByteCounter uint32
+	deletionByteCounter uint64
+	fileByteCounter     uint64
 }
 
 func NewNeedleMap(file *os.File) *NeedleMap {
@@ -44,19 +45,20 @@ func LoadNeedleMap(file *os.File) *NeedleMap {
 			key := util.BytesToUint64(bytes[i : i+8])
 			offset := util.BytesToUint32(bytes[i+8 : i+12])
 			size := util.BytesToUint32(bytes[i+12 : i+16])
+			nm.fileCounter++
+			nm.fileByteCounter = nm.fileByteCounter + uint64(size)
 			if offset > 0 {
 				oldSize := nm.m.Set(Key(key), offset, size)
 				//log.Println("reading key", key, "offset", offset, "size", size, "oldSize", oldSize)
-				nm.fileCounter++
 				if oldSize > 0 {
 					nm.deletionCounter++
-					nm.deletionByteCounter = nm.deletionByteCounter + oldSize
+					nm.deletionByteCounter = nm.deletionByteCounter + uint64(oldSize)
 				}
 			} else {
 				nm.m.Delete(Key(key))
 				//log.Println("removing key", key)
 				nm.deletionCounter++
-				nm.deletionByteCounter = nm.deletionByteCounter + size
+				nm.deletionByteCounter = nm.deletionByteCounter + uint64(size)
 			}
 		}
 
@@ -71,9 +73,10 @@ func (nm *NeedleMap) Put(key uint64, offset uint32, size uint32) (int, error) {
 	util.Uint32toBytes(nm.bytes[8:12], offset)
 	util.Uint32toBytes(nm.bytes[12:16], size)
 	nm.fileCounter++
+	nm.fileByteCounter = nm.fileByteCounter + uint64(size)
 	if oldSize > 0 {
 		nm.deletionCounter++
-		nm.deletionByteCounter = nm.deletionByteCounter + oldSize
+		nm.deletionByteCounter = nm.deletionByteCounter + uint64(oldSize)
 	}
 	return nm.indexFile.Write(nm.bytes)
 }
@@ -82,7 +85,7 @@ func (nm *NeedleMap) Get(key uint64) (element *NeedleValue, ok bool) {
 	return
 }
 func (nm *NeedleMap) Delete(key uint64) {
-	nm.deletionByteCounter = nm.deletionByteCounter + nm.m.Delete(Key(key))
+	nm.deletionByteCounter = nm.deletionByteCounter + uint64(nm.m.Delete(Key(key)))
 	util.Uint64toBytes(nm.bytes[0:8], key)
 	util.Uint32toBytes(nm.bytes[8:12], 0)
 	util.Uint32toBytes(nm.bytes[12:16], 0)
@@ -92,3 +95,6 @@ func (nm *NeedleMap) Delete(key uint64) {
 func (nm *NeedleMap) Close() {
 	nm.indexFile.Close()
 }
+func (nm *NeedleMap) ContentSize() uint64 {
+	return nm.fileByteCounter
+}

weed-fs/src/pkg/storage/store.go

@@ -18,6 +18,10 @@ type Store struct {
 	Ip             string
 	PublicUrl      string
 	MaxVolumeCount int
+
+	//read from the master
+	masterNode      string
+	volumeSizeLimit uint64
 }
 
 func NewStore(port int, ip, publicUrl, dirname string, maxVolumeCount int) (s *Store) {
@@ -87,7 +91,7 @@ func (s *Store) CompactVolume(volumeIdString string) error {
 	}
 	return s.volumes[vid].compact()
 }
-func (s *Store) CommitCompactVolume(volumeIdString string) (error) {
+func (s *Store) CommitCompactVolume(volumeIdString string) error {
 	vid, err := NewVolumeId(volumeIdString)
 	if err != nil {
 		return errors.New("Volume Id " + volumeIdString + " is not a valid unsigned integer!")
@@ -115,16 +119,24 @@ func (s *Store) Status() []*VolumeInfo {
 	var stats []*VolumeInfo
 	for k, v := range s.volumes {
 		s := new(VolumeInfo)
-		s.Id, s.Size, s.RepType, s.FileCount, s.DeleteCount, s.DeletedByteCount = VolumeId(k), v.Size(), v.replicaType, v.nm.fileCounter, v.nm.deletionCounter, v.nm.deletionByteCounter
+		s.Id, s.Size, s.RepType, s.FileCount, s.DeleteCount, s.DeletedByteCount = VolumeId(k), v.ContentSize(), v.replicaType, v.nm.fileCounter, v.nm.deletionCounter, v.nm.deletionByteCounter
 		stats = append(stats, s)
 	}
 	return stats
 }
-func (s *Store) Join(mserver string) error {
+
+type JoinResult struct {
+	VolumeSizeLimit uint64
+}
+
+func (s *Store) SetMaster(mserver string) {
+    s.masterNode = mserver
+}
+func (s *Store) Join() error {
 	stats := new([]*VolumeInfo)
 	for k, v := range s.volumes {
 		s := new(VolumeInfo)
-		s.Id, s.Size, s.RepType, s.FileCount, s.DeleteCount, s.DeletedByteCount = VolumeId(k), v.Size(), v.replicaType, v.nm.fileCounter, v.nm.deletionCounter, v.nm.deletionByteCounter
+		s.Id, s.Size, s.RepType, s.FileCount, s.DeleteCount, s.DeletedByteCount = VolumeId(k), uint64(v.Size()), v.replicaType, v.nm.fileCounter, v.nm.deletionCounter, v.nm.deletionByteCounter
 		*stats = append(*stats, s)
 	}
 	bytes, _ := json.Marshal(stats)
@@ -134,8 +146,16 @@ func (s *Store) Join(mserver string) error {
 	values.Add("publicUrl", s.PublicUrl)
 	values.Add("volumes", string(bytes))
 	values.Add("maxVolumeCount", strconv.Itoa(s.MaxVolumeCount))
-	_, err := util.Post("http://"+mserver+"/dir/join", values)
+	jsonBlob, err := util.Post("http://"+s.masterNode+"/dir/join", values)
+	if err != nil {
 		return err
+	}
+	var ret JoinResult
+	if err := json.Unmarshal(jsonBlob, &ret); err != nil {
+		return err
+	}
+	s.volumeSizeLimit = ret.VolumeSizeLimit
+	return nil
 }
 func (s *Store) Close() {
 	for _, v := range s.volumes {
@@ -144,9 +164,13 @@ func (s *Store) Close() {
 }
 func (s *Store) Write(i VolumeId, n *Needle) uint32 {
 	if v := s.volumes[i]; v != nil {
-		return v.write(n)
+		size := v.write(n)
+		if s.volumeSizeLimit < v.ContentSize()+uint64(size) {
+			s.Join()
+		}
+		return size
 	}
-  log.Println("volume",i, "not found!")
+	log.Println("volume", i, "not found!")
 	return 0
 }
 func (s *Store) Delete(i VolumeId, n *Needle) uint32 {

weed-fs/src/pkg/storage/volume.go

@@ -132,7 +132,7 @@ func (v *Volume) read(n *Needle) (int, error) {
 }
 
 func (v *Volume) garbageLevel() float64 {
-    return float64(v.nm.deletionByteCounter)/float64(v.Size())
+    return float64(v.nm.deletionByteCounter)/float64(v.ContentSize())
 }
 
 func (v *Volume) compact() error {
@@ -212,3 +212,6 @@ func (v *Volume) copyDataAndGenerateIndexFile(srcName, dstName, idxName string)
 
 	return nil
 }
+func (v *Volume) ContentSize() uint64{
+    return v.nm.fileByteCounter
+}

weed-fs/src/pkg/storage/volume_info.go

@@ -1,13 +1,12 @@
 package storage
 
-import (
-)
+import ()
 
 type VolumeInfo struct {
 	Id               VolumeId
-	Size    int64
+	Size             uint64
 	RepType          ReplicationType
 	FileCount        int
 	DeleteCount      int
-    DeletedByteCount uint32
+	DeletedByteCount uint64
 }