fix naming convention

notify volume server of duplicate directoris
improve searching efficiency

weed/pb/master.proto

@@ -70,7 +70,7 @@ message Heartbeat {
 
   map<string, uint32> max_volume_counts = 4;
   uint32 grpc_port = 20;
-  repeated string LocationUUIDs = 21;
+  repeated string location_uuids = 21;
 }
 
 message HeartbeatResponse {
@@ -79,7 +79,7 @@ message HeartbeatResponse {
   string metrics_address = 3;
   uint32 metrics_interval_seconds = 4;
   repeated StorageBackend storage_backends = 5;
-  bool has_duplicated_directory = 6;
+  repeated string duplicated_uuids = 6;
 }
 
 message VolumeInformationMessage {

weed/server/master_grpc_server.go

@@ -22,35 +22,39 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/topology"
 )
 
-func (ms *MasterServer) RegisterUUIDs(heartbeat *master_pb.Heartbeat) error {
-	ms.Topo.UUIDAccessLock.Lock()
-	defer ms.Topo.UUIDAccessLock.Unlock()
+func (ms *MasterServer) RegisterUuids(heartbeat *master_pb.Heartbeat) (duplicated_uuids []string, err error) {
+	ms.Topo.UuidAccessLock.Lock()
+	defer ms.Topo.UuidAccessLock.Unlock()
 	key := fmt.Sprintf("%s:%d", heartbeat.Ip, heartbeat.Port)
-	if ms.Topo.UUIDMap == nil {
-		ms.Topo.UUIDMap = make(map[string][]string)
+	if ms.Topo.UuidMap == nil {
+		ms.Topo.UuidMap = make(map[string][]string)
 	}
-	// find whether new UUID exists
-	for k, v := range ms.Topo.UUIDMap {
-		for _, id := range heartbeat.LocationUUIDs {
+	// find whether new uuid exists
+	for k, v := range ms.Topo.UuidMap {
 		sort.Strings(v)
+		for _, id := range heartbeat.LocationUuids {
 			index := sort.SearchStrings(v, id)
 			if index < len(v) && v[index] == id {
-				glog.Error("directory of ", id, " on ", k, " has been loaded")
-				return errors.New("volume: Duplicated volume directories were loaded")
+				duplicated_uuids = append(duplicated_uuids, id)
+				glog.Errorf("directory of %s on %s has been loaded", id, k)
 			}
 		}
 	}
-	ms.Topo.UUIDMap[key] = heartbeat.LocationUUIDs
-	glog.V(0).Infof("found new UUID:%v %v , %v", key, heartbeat.LocationUUIDs, ms.Topo.UUIDMap)
-	return nil
+	if len(duplicated_uuids) > 0 {
+		return duplicated_uuids, errors.New("volume: Duplicated volume directories were loaded")
+	}
+
+	ms.Topo.UuidMap[key] = heartbeat.LocationUuids
+	glog.V(0).Infof("found new uuid:%v %v , %v", key, heartbeat.LocationUuids, ms.Topo.UuidMap)
+	return nil, nil
 }
 
-func (ms *MasterServer) UnRegisterUUIDs(ip string, port int) {
-	ms.Topo.UUIDAccessLock.Lock()
-	defer ms.Topo.UUIDAccessLock.Unlock()
+func (ms *MasterServer) UnRegisterUuids(ip string, port int) {
+	ms.Topo.UuidAccessLock.Lock()
+	defer ms.Topo.UuidAccessLock.Unlock()
 	key := fmt.Sprintf("%s:%d", ip, port)
-	delete(ms.Topo.UUIDMap, key)
-	glog.V(0).Infof("remove volume server %v, online volume server: %v", key, ms.Topo.UUIDMap)
+	delete(ms.Topo.UuidMap, key)
+	glog.V(0).Infof("remove volume server %v, online volume server: %v", key, ms.Topo.UuidMap)
 }
 
 func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServer) error {
@@ -67,7 +71,7 @@ func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServ
 			//  the unregister and register can race with each other
 			ms.Topo.UnRegisterDataNode(dn)
 			glog.V(0).Infof("unregister disconnected volume server %s:%d", dn.Ip, dn.Port)
-			ms.UnRegisterUUIDs(dn.Ip, dn.Port)
+			ms.UnRegisterUuids(dn.Ip, dn.Port)
 
 			message := &master_pb.VolumeLocation{
 				Url:       dn.Url(),
@@ -105,11 +109,11 @@ func (ms *MasterServer) SendHeartbeat(stream master_pb.Seaweed_SendHeartbeatServ
 			dc := ms.Topo.GetOrCreateDataCenter(dcName)
 			rack := dc.GetOrCreateRack(rackName)
 			dn = rack.GetOrCreateDataNode(heartbeat.Ip, int(heartbeat.Port), int(heartbeat.GrpcPort), heartbeat.PublicUrl, heartbeat.MaxVolumeCounts)
-			glog.V(0).Infof("added volume server %d: %v:%d %v", dn.Counter, heartbeat.GetIp(), heartbeat.GetPort(), heartbeat.LocationUUIDs)
-			err := ms.RegisterUUIDs(heartbeat)
+			glog.V(0).Infof("added volume server %d: %v:%d %v", dn.Counter, heartbeat.GetIp(), heartbeat.GetPort(), heartbeat.LocationUuids)
+			uuidlist, err := ms.RegisterUuids(heartbeat)
 			if err != nil {
 				if stream_err := stream.Send(&master_pb.HeartbeatResponse{
-					HasDuplicatedDirectory: true,
+					DuplicatedUuids:    uuidlist,
 				}); stream_err != nil {
 					glog.Warningf("SendHeartbeat.Send DuplicatedDirectory response to %s:%d %v", dn.Ip, dn.Port, stream_err)
 					return stream_err

weed/server/volume_grpc_client_to_master.go

@@ -118,8 +118,16 @@ func (vs *VolumeServer) doHeartbeat(masterAddress pb.ServerAddress, grpcDialOpti
 				doneChan <- err
 				return
 			}
-			if in.HasDuplicatedDirectory {
-				glog.Error("Shut Down Volume Server due to duplicated volume directory")
+			if len(in.DuplicatedUuids) > 0 {
+				var duplictedDir []string
+				for _, loc := range vs.store.Locations {
+					for _, uuid := range in.DuplicatedUuids {
+						if uuid == loc.DirectoryUuid {
+							duplictedDir = append(duplictedDir, loc.Directory)
+						}
+					}
+				}
+				glog.Errorf("Shut down Volume Server due to duplicated volume directories: %v", duplictedDir)
 				os.Exit(1)
 			}
 			if in.GetVolumeSizeLimit() != 0 && vs.store.GetVolumeSizeLimit() != in.GetVolumeSizeLimit() {

weed/storage/disk_location.go

@@ -19,7 +19,7 @@ import (
 
 type DiskLocation struct {
 	Directory              string
-	DirectoryUUID          string
+	DirectoryUuid          string
 	IdxDirectory           string
 	DiskType               types.DiskType
 	MaxVolumeCount         int
@@ -35,27 +35,27 @@ type DiskLocation struct {
 	isDiskSpaceLow bool
 }
 
-func GenerateDirUUID(dir string) (dirUUIDString string, err error) {
-	glog.V(1).Infof("Getting UUID of volume directory:%s", dir)
-	dirUUIDString = ""
+func GenerateDirUuid(dir string) (dirUuidString string, err error) {
+	glog.V(1).Infof("Getting uuid of volume directory:%s", dir)
+	dirUuidString = ""
 	fileName := dir + "/vol_dir.uuid"
 	if !util.FileExists(fileName) {
-		dirUUID, _ := uuid.NewRandom()
-		dirUUIDString = dirUUID.String()
-		writeErr := util.WriteFile(fileName, []byte(dirUUIDString), 0644)
+		dirUuid, _ := uuid.NewRandom()
+		dirUuidString = dirUuid.String()
+		writeErr := util.WriteFile(fileName, []byte(dirUuidString), 0644)
 		if writeErr != nil {
-			glog.Warningf("failed to write UUID to %s : %v", fileName, writeErr)
-			return "", fmt.Errorf("failed to write UUID to %s : %v", fileName, writeErr)
+			glog.Warningf("failed to write uuid to %s : %v", fileName, writeErr)
+			return "", fmt.Errorf("failed to write uuid to %s : %v", fileName, writeErr)
 		}
 	} else {
 		uuidData, readErr := os.ReadFile(fileName)
 		if readErr != nil {
-			glog.Warningf("failed to read UUID from %s : %v", fileName, readErr)
-			return "", fmt.Errorf("failed to read UUID from %s : %v", fileName, readErr)
+			glog.Warningf("failed to read uuid from %s : %v", fileName, readErr)
+			return "", fmt.Errorf("failed to read uuid from %s : %v", fileName, readErr)
 		}
-		dirUUIDString = string(uuidData)
+		dirUuidString = string(uuidData)
 	}
-	return dirUUIDString, nil
+	return dirUuidString, nil
 }
 
 func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpace util.MinFreeSpace, idxDir string, diskType types.DiskType) *DiskLocation {
@@ -65,10 +65,10 @@ func NewDiskLocation(dir string, maxVolumeCount int, minFreeSpace util.MinFreeSp
 	} else {
 		idxDir = util.ResolvePath(idxDir)
 	}
-	dirUUID, _ := GenerateDirUUID(dir)
+	dirUuid, _ := GenerateDirUuid(dir)
 	location := &DiskLocation{
 		Directory:              dir,
-		DirectoryUUID:          dirUUID,
+		DirectoryUuid:          dirUuid,
 		IdxDirectory:           idxDir,
 		DiskType:               diskType,
 		MaxVolumeCount:         maxVolumeCount,

weed/storage/store.go

@@ -301,9 +301,9 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 		}
 	}
 
-	var UUIDList []string
+	var uuidList []string
 	for _, loc := range s.Locations {
-		UUIDList = append(UUIDList, loc.DirectoryUUID)
+		uuidList = append(uuidList, loc.DirectoryUuid)
 	}
 
 	for col, size := range collectionVolumeSize {
@@ -327,7 +327,7 @@ func (s *Store) CollectHeartbeat() *master_pb.Heartbeat {
 		Rack:            s.rack,
 		Volumes:         volumeMessages,
 		HasNoVolumes:    len(volumeMessages) == 0,
-		LocationUUIDs:   UUIDList,
+		LocationUuids:   uuidList,
 	}
 
 }

weed/topology/topology.go

@@ -45,8 +45,8 @@ type Topology struct {
 
 	RaftServer     raft.Server
 	HashicorpRaft  *hashicorpRaft.Raft
-	UUIDAccessLock sync.RWMutex
-	UUIDMap        map[string][]string
+	UuidAccessLock sync.RWMutex
+	UuidMap        map[string][]string
 }
 
 func NewTopology(id string, seq sequence.Sequencer, volumeSizeLimit uint64, pulse int, replicationAsMin bool) *Topology {