filer: add filer group

weed/cluster/cluster.go

@@ -15,6 +15,15 @@ const (
 	BrokerType       = "broker"
 )
 
+type FilerGroup string
+type Filers struct {
+	filers  map[pb.ServerAddress]*ClusterNode
+	leaders *Leaders
+}
+type Leaders struct {
+	leaders [3]pb.ServerAddress
+}
+
 type ClusterNode struct {
 	Address   pb.ServerAddress
 	Version   string
@@ -22,42 +31,50 @@ type ClusterNode struct {
 	createdTs time.Time
 }
 
-type Leaders struct {
-	leaders [3]pb.ServerAddress
-}
-
 type Cluster struct {
-	filers       map[pb.ServerAddress]*ClusterNode
+	filerGroup2filers map[FilerGroup]*Filers
-	filersLock   sync.RWMutex
+	filersLock        sync.RWMutex
-	filerLeaders *Leaders
+	brokers           map[pb.ServerAddress]*ClusterNode
-	brokers      map[pb.ServerAddress]*ClusterNode
+	brokersLock       sync.RWMutex
-	brokersLock  sync.RWMutex
 }
 
 func NewCluster() *Cluster {
 	return &Cluster{
-		filers:       make(map[pb.ServerAddress]*ClusterNode),
+		filerGroup2filers: make(map[FilerGroup]*Filers),
-		filerLeaders: &Leaders{},
+		brokers:           make(map[pb.ServerAddress]*ClusterNode),
-		brokers:      make(map[pb.ServerAddress]*ClusterNode),
 	}
 }
 
-func (cluster *Cluster) AddClusterNode(nodeType string, address pb.ServerAddress, version string) []*master_pb.KeepConnectedResponse {
+func (cluster *Cluster) getFilers(filerGroup FilerGroup, createIfNotFound bool) *Filers {
+	cluster.filersLock.Lock()
+	defer cluster.filersLock.Unlock()
+	filers, found := cluster.filerGroup2filers[filerGroup]
+	if !found && createIfNotFound {
+		filers = &Filers{
+			filers:  make(map[pb.ServerAddress]*ClusterNode),
+			leaders: &Leaders{},
+		}
+		cluster.filerGroup2filers[filerGroup] = filers
+	}
+	return filers
+}
+
+func (cluster *Cluster) AddClusterNode(ns, nodeType string, address pb.ServerAddress, version string) []*master_pb.KeepConnectedResponse {
+	filerGroup := FilerGroup(ns)
 	switch nodeType {
 	case FilerType:
-		cluster.filersLock.Lock()
+		filers := cluster.getFilers(filerGroup, true)
-		defer cluster.filersLock.Unlock()
+		if existingNode, found := filers.filers[address]; found {
-		if existingNode, found := cluster.filers[address]; found {
 			existingNode.counter++
 			return nil
 		}
-		cluster.filers[address] = &ClusterNode{
+		filers.filers[address] = &ClusterNode{
 			Address:   address,
 			Version:   version,
 			counter:   1,
 			createdTs: time.Now(),
 		}
-		return cluster.ensureFilerLeaders(true, nodeType, address)
+		return cluster.ensureFilerLeaders(filers, true, filerGroup, nodeType, address)
 	case BrokerType:
 		cluster.brokersLock.Lock()
 		defer cluster.brokersLock.Unlock()
@@ -94,18 +111,21 @@ func (cluster *Cluster) AddClusterNode(nodeType string, address pb.ServerAddress
 	return nil
 }
 
-func (cluster *Cluster) RemoveClusterNode(nodeType string, address pb.ServerAddress) []*master_pb.KeepConnectedResponse {
+func (cluster *Cluster) RemoveClusterNode(ns string, nodeType string, address pb.ServerAddress) []*master_pb.KeepConnectedResponse {
+	filerGroup := FilerGroup(ns)
 	switch nodeType {
 	case FilerType:
-		cluster.filersLock.Lock()
+		filers := cluster.getFilers(filerGroup, false)
-		defer cluster.filersLock.Unlock()
+		if filers == nil {
-		if existingNode, found := cluster.filers[address]; !found {
+			return nil
+		}
+		if existingNode, found := filers.filers[address]; !found {
 			return nil
 		} else {
 			existingNode.counter--
 			if existingNode.counter <= 0 {
-				delete(cluster.filers, address)
+				delete(filers.filers, address)
-				return cluster.ensureFilerLeaders(false, nodeType, address)
+				return cluster.ensureFilerLeaders(filers, false, filerGroup, nodeType, address)
 			}
 		}
 	case BrokerType:
@@ -142,12 +162,16 @@ func (cluster *Cluster) RemoveClusterNode(nodeType string, address pb.ServerAddr
 	return nil
 }
 
-func (cluster *Cluster) ListClusterNode(nodeType string) (nodes []*ClusterNode) {
+func (cluster *Cluster) ListClusterNode(filerGroup FilerGroup, nodeType string) (nodes []*ClusterNode) {
 	switch nodeType {
 	case FilerType:
+		filers := cluster.getFilers(filerGroup, false)
+		if filers == nil {
+			return
+		}
 		cluster.filersLock.RLock()
 		defer cluster.filersLock.RUnlock()
-		for _, node := range cluster.filers {
+		for _, node := range filers.filers {
 			nodes = append(nodes, node)
 		}
 	case BrokerType:
@@ -161,41 +185,48 @@ func (cluster *Cluster) ListClusterNode(nodeType string) (nodes []*ClusterNode)
 	return
 }
 
-func (cluster *Cluster) IsOneLeader(address pb.ServerAddress) bool {
+func (cluster *Cluster) IsOneLeader(filerGroup FilerGroup, address pb.ServerAddress) bool {
-	return cluster.filerLeaders.isOneLeader(address)
+	filers := cluster.getFilers(filerGroup, false)
+	if filers == nil {
+		return false
+	}
+	return filers.leaders.isOneLeader(address)
 }
 
-func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address pb.ServerAddress) (result []*master_pb.KeepConnectedResponse) {
+func (cluster *Cluster) ensureFilerLeaders(filers *Filers, isAdd bool, filerGroup FilerGroup, nodeType string, address pb.ServerAddress) (result []*master_pb.KeepConnectedResponse) {
 	if isAdd {
-		if cluster.filerLeaders.addLeaderIfVacant(address) {
+		if filers.leaders.addLeaderIfVacant(address) {
 			// has added the address as one leader
 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
+					FilerGroup: string(filerGroup),
-					Address:  string(address),
+					NodeType:   nodeType,
-					IsLeader: true,
+					Address:    string(address),
-					IsAdd:    true,
+					IsLeader:   true,
+					IsAdd:      true,
 				},
 			})
 		} else {
 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
+					FilerGroup: string(filerGroup),
-					Address:  string(address),
+					NodeType:   nodeType,
-					IsLeader: false,
+					Address:    string(address),
-					IsAdd:    true,
+					IsLeader:   false,
+					IsAdd:      true,
 				},
 			})
 		}
 	} else {
-		if cluster.filerLeaders.removeLeaderIfExists(address) {
+		if filers.leaders.removeLeaderIfExists(address) {
 
 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
+					FilerGroup: string(filerGroup),
-					Address:  string(address),
+					NodeType:   nodeType,
-					IsLeader: true,
+					Address:    string(address),
-					IsAdd:    false,
+					IsLeader:   true,
+					IsAdd:      false,
 				},
 			})
 
@@ -203,8 +234,8 @@ func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address
 			var shortestDuration int64 = math.MaxInt64
 			now := time.Now()
 			var candidateAddress pb.ServerAddress
-			for _, node := range cluster.filers {
+			for _, node := range filers.filers {
-				if cluster.filerLeaders.isOneLeader(node.Address) {
+				if filers.leaders.isOneLeader(node.Address) {
 					continue
 				}
 				duration := now.Sub(node.createdTs).Nanoseconds()
@@ -214,7 +245,7 @@ func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address
 				}
 			}
 			if candidateAddress != "" {
-				cluster.filerLeaders.addLeaderIfVacant(candidateAddress)
+				filers.leaders.addLeaderIfVacant(candidateAddress)
 				// added a new leader
 				result = append(result, &master_pb.KeepConnectedResponse{
 					ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
@@ -228,10 +259,11 @@ func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address
 		} else {
 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
+					FilerGroup: string(filerGroup),
-					Address:  string(address),
+					NodeType:   nodeType,
-					IsLeader: false,
+					Address:    string(address),
-					IsAdd:    false,
+					IsLeader:   false,
+					IsAdd:      false,
 				},
 			})
 		}

weed/command/benchmark.go

@@ -129,7 +129,7 @@ func runBenchmark(cmd *Command, args []string) bool {
 		defer pprof.StopCPUProfile()
 	}
 
-	b.masterClient = wdclient.NewMasterClient(b.grpcDialOption, "client", "", "", pb.ServerAddresses(*b.masters).ToAddressMap())
+	b.masterClient = wdclient.NewMasterClient(b.grpcDialOption, "", "client", "", "", pb.ServerAddresses(*b.masters).ToAddressMap())
 	go b.masterClient.KeepConnectedToMaster()
 	b.masterClient.WaitUntilConnected()
 

weed/command/filer.go

@@ -37,6 +37,7 @@ type FilerOptions struct {
 	port                    *int
 	portGrpc                *int
 	publicPort              *int
+	filerGroup              *string
 	collection              *string
 	defaultReplicaPlacement *string
 	disableDirListing       *bool
@@ -59,6 +60,7 @@ type FilerOptions struct {
 func init() {
 	cmdFiler.Run = runFiler // break init cycle
 	f.mastersString = cmdFiler.Flag.String("master", "localhost:9333", "comma-separated master servers")
+	f.filerGroup = cmdFiler.Flag.String("filerGroup", "", "share metadata with other filers in the same filerGroup")
 	f.collection = cmdFiler.Flag.String("collection", "", "all data will be stored in this default collection")
 	f.ip = cmdFiler.Flag.String("ip", util.DetectedHostAddress(), "filer server http listen ip address")
 	f.bindIp = cmdFiler.Flag.String("ip.bind", "", "ip address to bind to. If empty, default to same as -ip option.")
@@ -201,6 +203,7 @@ func (fo *FilerOptions) startFiler() {
 
 	fs, nfs_err := weed_server.NewFilerServer(defaultMux, publicVolumeMux, &weed_server.FilerOption{
 		Masters:               fo.masters,
+		FilerGroup:            *fo.filerGroup,
 		Collection:            *fo.collection,
 		DefaultReplication:    *fo.defaultReplicaPlacement,
 		DisableDirListing:     *fo.disableDirListing,

weed/command/server.go

@@ -101,6 +101,7 @@ func init() {
 	masterOptions.heartbeatInterval = cmdServer.Flag.Duration("master.heartbeatInterval", 300*time.Millisecond, "heartbeat interval of master servers, and will be randomly multiplied by [1, 1.25)")
 	masterOptions.electionTimeout = cmdServer.Flag.Duration("master.electionTimeout", 10*time.Second, "election timeout of master servers")
 
+	filerOptions.filerGroup = cmdServer.Flag.String("filer.filerGroup", "", "share metadata with other filers in the same filerGroup")
 	filerOptions.collection = cmdServer.Flag.String("filer.collection", "", "all data will be stored in this collection")
 	filerOptions.port = cmdServer.Flag.Int("filer.port", 8888, "filer server http listen port")
 	filerOptions.portGrpc = cmdServer.Flag.Int("filer.port.grpc", 0, "filer server grpc listen port")

weed/command/shell.go

@@ -18,6 +18,7 @@ var (
 func init() {
 	cmdShell.Run = runShell // break init cycle
 	shellOptions.Masters = cmdShell.Flag.String("master", "", "comma-separated master servers, e.g. localhost:9333")
+	shellOptions.FilerGroup = cmdShell.Flag.String("filerGroup", "", "filerGroup for the filers")
 	shellInitialFiler = cmdShell.Flag.String("filer", "", "filer host and port, e.g. localhost:8888")
 	shellCluster = cmdShell.Flag.String("cluster", "", "cluster defined in shell.toml")
 }

weed/filer/filer.go

@@ -49,10 +49,10 @@ type Filer struct {
 	UniqueFileId        uint32
 }
 
-func NewFiler(masters map[string]pb.ServerAddress, grpcDialOption grpc.DialOption,
+func NewFiler(masters map[string]pb.ServerAddress, grpcDialOption grpc.DialOption, filerHost pb.ServerAddress,
-	filerHost pb.ServerAddress, collection string, replication string, dataCenter string, notifyFn func()) *Filer {
+	filerGroup string, collection string, replication string, dataCenter string, notifyFn func()) *Filer {
 	f := &Filer{
-		MasterClient:        wdclient.NewMasterClient(grpcDialOption, cluster.FilerType, filerHost, dataCenter, masters),
+		MasterClient:        wdclient.NewMasterClient(grpcDialOption, filerGroup, cluster.FilerType, filerHost, dataCenter, masters),
 		fileIdDeletionQueue: util.NewUnboundedQueue(),
 		GrpcDialOption:      grpcDialOption,
 		FilerConf:           NewFilerConf(),
@@ -84,6 +84,7 @@ func (f *Filer) ListExistingPeerUpdates() (existingNodes []*master_pb.ClusterNod
 	if grpcErr := pb.WithMasterClient(false, f.MasterClient.GetMaster(), f.GrpcDialOption, func(client master_pb.SeaweedClient) error {
 		resp, err := client.ListClusterNodes(context.Background(), &master_pb.ListClusterNodesRequest{
 			ClientType: cluster.FilerType,
+			FilerGroup: f.MasterClient.FilerGroup,
 		})
 
 		glog.V(0).Infof("the cluster has %d filers\n", len(resp.ClusterNodes))

weed/filer/leveldb/leveldb_store_test.go

@@ -12,7 +12,7 @@ import (
 )
 
 func TestCreateAndFind(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDBStore{}
 	store.initialize(dir)
@@ -65,7 +65,7 @@ func TestCreateAndFind(t *testing.T) {
 }
 
 func TestEmptyRoot(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDBStore{}
 	store.initialize(dir)
@@ -87,7 +87,7 @@ func TestEmptyRoot(t *testing.T) {
 }
 
 func BenchmarkInsertEntry(b *testing.B) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := b.TempDir()
 	store := &LevelDBStore{}
 	store.initialize(dir)

weed/filer/leveldb2/leveldb2_store_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestCreateAndFind(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB2Store{}
 	store.initialize(dir, 2)
@@ -62,7 +62,7 @@ func TestCreateAndFind(t *testing.T) {
 }
 
 func TestEmptyRoot(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB2Store{}
 	store.initialize(dir, 2)

weed/filer/leveldb3/leveldb3_store_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestCreateAndFind(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB3Store{}
 	store.initialize(dir)
@@ -62,7 +62,7 @@ func TestCreateAndFind(t *testing.T) {
 }
 
 func TestEmptyRoot(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB3Store{}
 	store.initialize(dir)

weed/iamapi/iamapi_server.go

@@ -49,7 +49,7 @@ var s3ApiConfigure IamS3ApiConfig
 func NewIamApiServer(router *mux.Router, option *IamServerOption) (iamApiServer *IamApiServer, err error) {
 	s3ApiConfigure = IamS3ApiConfigure{
 		option:       option,
-		masterClient: wdclient.NewMasterClient(option.GrpcDialOption, "iam", "", "", option.Masters),
+		masterClient: wdclient.NewMasterClient(option.GrpcDialOption, "", "iam", "", "", option.Masters),
 	}
 	s3Option := s3api.S3ApiServerOption{Filer: option.Filer}
 	iamApiServer = &IamApiServer{

weed/pb/filer_pb/filer.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
+// 	protoc-gen-go v1.26.0
-// 	protoc        v3.19.4
+// 	protoc        v3.17.3
 // source: filer.proto
 
 package filer_pb

weed/pb/filer_pb/filer_grpc.pb.go

@@ -11,6 +11,7 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
 // SeaweedFilerClient is the client API for SeaweedFiler service.

weed/pb/iam_pb/iam.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
+// 	protoc-gen-go v1.26.0
-// 	protoc        v3.19.4
+// 	protoc        v3.17.3
 // source: iam.proto
 
 package iam_pb

weed/pb/iam_pb/iam_grpc.pb.go

@@ -8,6 +8,7 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
 // SeaweedIdentityAccessManagementClient is the client API for SeaweedIdentityAccessManagement service.

weed/pb/master.proto

@@ -137,6 +137,7 @@ message KeepConnectedRequest {
   string client_type = 1;
   string client_address = 3;
   string version = 4;
+  string filer_group = 5;
 }
 
 message VolumeLocation {
@@ -156,6 +157,7 @@ message ClusterNodeUpdate {
   string address = 2;
   bool is_leader = 3;
   bool is_add = 4;
+  string filer_group = 5;
 }
 
 message KeepConnectedResponse {
@@ -310,6 +312,7 @@ message GetMasterConfigurationResponse {
 
 message ListClusterNodesRequest {
   string client_type = 1;
+  string filer_group = 2;
 }
 message ListClusterNodesResponse {
   message ClusterNode {

weed/pb/master_pb/master_grpc.pb.go

@@ -11,6 +11,7 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
 // SeaweedClient is the client API for Seaweed service.

weed/pb/messaging_pb/messaging.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
+// 	protoc-gen-go v1.26.0
-// 	protoc        v3.19.4
+// 	protoc        v3.17.3
 // source: messaging.proto
 
 package messaging_pb

weed/pb/messaging_pb/messaging_grpc.pb.go

@@ -11,6 +11,7 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
 // SeaweedMessagingClient is the client API for SeaweedMessaging service.

weed/pb/mount_pb/mount.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
+// 	protoc-gen-go v1.26.0
-// 	protoc        v3.19.4
+// 	protoc        v3.17.3
 // source: mount.proto
 
 package mount_pb

weed/pb/mount_pb/mount_grpc.pb.go

@@ -11,6 +11,7 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
 // SeaweedMountClient is the client API for SeaweedMount service.

weed/pb/remote_pb/remote.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
+// 	protoc-gen-go v1.26.0
-// 	protoc        v3.19.4
+// 	protoc        v3.17.3
 // source: remote.proto
 
 package remote_pb

weed/pb/volume_server_pb/volume_server.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.0
+// 	protoc-gen-go v1.26.0
-// 	protoc        v3.19.4
+// 	protoc        v3.17.3
 // source: volume_server.proto
 
 package volume_server_pb

weed/pb/volume_server_pb/volume_server_grpc.pb.go

@@ -11,6 +11,7 @@ import (
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
 const _ = grpc.SupportPackageIsVersion7
 
 // VolumeServerClient is the client API for VolumeServer service.

weed/server/filer_server.go

@@ -50,6 +50,7 @@ import (
 
 type FilerOption struct {
 	Masters               map[string]pb.ServerAddress
+	FilerGroup            string
 	Collection            string
 	DefaultReplication    string
 	DisableDirListing     bool
@@ -118,7 +119,7 @@ func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, option *FilerOption)
 		glog.Fatal("master list is required!")
 	}
 
-	fs.filer = filer.NewFiler(option.Masters, fs.grpcDialOption, option.Host, option.Collection, option.DefaultReplication, option.DataCenter, func() {
+	fs.filer = filer.NewFiler(option.Masters, fs.grpcDialOption, option.Host, option.FilerGroup, option.Collection, option.DefaultReplication, option.DataCenter, func() {
 		fs.listenersCond.Broadcast()
 	})
 	fs.filer.Cipher = option.Cipher

weed/server/master_grpc_server.go

@@ -201,13 +201,13 @@ func (ms *MasterServer) KeepConnected(stream master_pb.Seaweed_KeepConnectedServ
 	// buffer by 1 so we don't end up getting stuck writing to stopChan forever
 	stopChan := make(chan bool, 1)
 
-	clientName, messageChan := ms.addClient(req.ClientType, peerAddress)
+	clientName, messageChan := ms.addClient(req.FilerGroup, req.ClientType, peerAddress)
-	for _, update := range ms.Cluster.AddClusterNode(req.ClientType, peerAddress, req.Version) {
+	for _, update := range ms.Cluster.AddClusterNode(req.FilerGroup, req.ClientType, peerAddress, req.Version) {
 		ms.broadcastToClients(update)
 	}
 
 	defer func() {
-		for _, update := range ms.Cluster.RemoveClusterNode(req.ClientType, peerAddress) {
+		for _, update := range ms.Cluster.RemoveClusterNode(req.FilerGroup, req.ClientType, peerAddress) {
 			ms.broadcastToClients(update)
 		}
 		ms.deleteClient(clientName)
@@ -276,8 +276,8 @@ func (ms *MasterServer) informNewLeader(stream master_pb.Seaweed_KeepConnectedSe
 	return nil
 }
 
-func (ms *MasterServer) addClient(clientType string, clientAddress pb.ServerAddress) (clientName string, messageChan chan *master_pb.KeepConnectedResponse) {
+func (ms *MasterServer) addClient(filerGroup, clientType string, clientAddress pb.ServerAddress) (clientName string, messageChan chan *master_pb.KeepConnectedResponse) {
-	clientName = clientType + "@" + string(clientAddress)
+	clientName = filerGroup + "." + clientType + "@" + string(clientAddress)
 	glog.V(0).Infof("+ client %v", clientName)
 
 	// we buffer this because otherwise we end up in a potential deadlock where

weed/server/master_grpc_server_cluster.go

@@ -10,26 +10,26 @@ import (
 
 func (ms *MasterServer) ListClusterNodes(ctx context.Context, req *master_pb.ListClusterNodesRequest) (*master_pb.ListClusterNodesResponse, error) {
 	resp := &master_pb.ListClusterNodesResponse{}
-
+	filerGroup := cluster.FilerGroup(req.FilerGroup)
-	clusterNodes := ms.Cluster.ListClusterNode(req.ClientType)
+	clusterNodes := ms.Cluster.ListClusterNode(filerGroup, req.ClientType)
 
 	for _, node := range clusterNodes {
 		resp.ClusterNodes = append(resp.ClusterNodes, &master_pb.ListClusterNodesResponse_ClusterNode{
 			Address:  string(node.Address),
 			Version:  node.Version,
-			IsLeader: ms.Cluster.IsOneLeader(node.Address),
+			IsLeader: ms.Cluster.IsOneLeader(filerGroup, node.Address),
 		})
 	}
 	return resp, nil
 }
 
-func (ms *MasterServer) GetOneFiler() pb.ServerAddress {
+func (ms *MasterServer) GetOneFiler(filerGroup cluster.FilerGroup) pb.ServerAddress {
 
-	clusterNodes := ms.Cluster.ListClusterNode(cluster.FilerType)
+	clusterNodes := ms.Cluster.ListClusterNode(filerGroup, cluster.FilerType)
 
 	var filers []pb.ServerAddress
 	for _, node := range clusterNodes {
-		if ms.Cluster.IsOneLeader(node.Address) {
+		if ms.Cluster.IsOneLeader(filerGroup, node.Address) {
 			filers = append(filers, node.Address)
 		}
 	}

weed/server/master_server.go

@@ -113,7 +113,7 @@ func NewMasterServer(r *mux.Router, option *MasterOption, peers map[string]pb.Se
 		vgCh:            make(chan *topology.VolumeGrowRequest, 1<<6),
 		clientChans:     make(map[string]chan *master_pb.KeepConnectedResponse),
 		grpcDialOption:  grpcDialOption,
-		MasterClient:    wdclient.NewMasterClient(grpcDialOption, cluster.MasterType, option.Master, "", peers),
+		MasterClient:    wdclient.NewMasterClient(grpcDialOption, "", cluster.MasterType, option.Master, "", peers),
 		adminLocks:      NewAdminLocks(),
 		Cluster:         cluster.NewCluster(),
 	}
@@ -285,7 +285,7 @@ func (ms *MasterServer) startAdminScripts() {
 		for {
 			time.Sleep(time.Duration(sleepMinutes) * time.Minute)
 			if ms.Topo.IsLeader() {
-				shellOptions.FilerAddress = ms.GetOneFiler()
+				shellOptions.FilerAddress = ms.GetOneFiler(cluster.FilerGroup(*shellOptions.FilerGroup))
 				if shellOptions.FilerAddress == "" {
 					continue
 				}

weed/shell/command_cluster_check.go

@@ -59,6 +59,7 @@ func (c *commandClusterCheck) Do(args []string, commandEnv *CommandEnv, writer i
 	err = commandEnv.MasterClient.WithClient(false, func(client master_pb.SeaweedClient) error {
 		resp, err := client.ListClusterNodes(context.Background(), &master_pb.ListClusterNodesRequest{
 			ClientType: cluster.FilerType,
+			FilerGroup: *commandEnv.option.FilerGroup,
 		})
 
 		for _, node := range resp.ClusterNodes {

weed/shell/command_cluster_ps.go

@@ -39,6 +39,7 @@ func (c *commandClusterPs) Do(args []string, commandEnv *CommandEnv, writer io.W
 	err = commandEnv.MasterClient.WithClient(false, func(client master_pb.SeaweedClient) error {
 		resp, err := client.ListClusterNodes(context.Background(), &master_pb.ListClusterNodesRequest{
 			ClientType: cluster.FilerType,
+			FilerGroup: *commandEnv.option.FilerGroup,
 		})
 
 		fmt.Fprintf(writer, "the cluster has %d filers\n", len(resp.ClusterNodes))

weed/shell/commands.go

@@ -22,6 +22,7 @@ type ShellOptions struct {
 	// shell transient context
 	FilerHost    string
 	FilerPort    int64
+	FilerGroup   *string
 	FilerAddress pb.ServerAddress
 	Directory    string
 }
@@ -46,7 +47,7 @@ var (
 func NewCommandEnv(options *ShellOptions) *CommandEnv {
 	ce := &CommandEnv{
 		env:          make(map[string]string),
-		MasterClient: wdclient.NewMasterClient(options.GrpcDialOption, pb.AdminShellClient, "", "", pb.ServerAddresses(*options.Masters).ToAddressMap()),
+		MasterClient: wdclient.NewMasterClient(options.GrpcDialOption, *options.FilerGroup, pb.AdminShellClient, "", "", pb.ServerAddresses(*options.Masters).ToAddressMap()),
 		option:       options,
 	}
 	ce.locker = exclusive_locks.NewExclusiveLocker(ce.MasterClient, "admin")

weed/shell/shell_liner.go

@@ -54,6 +54,7 @@ func RunShell(options ShellOptions) {
 		commandEnv.MasterClient.WithClient(false, func(client master_pb.SeaweedClient) error {
 			resp, err := client.ListClusterNodes(context.Background(), &master_pb.ListClusterNodesRequest{
 				ClientType: cluster.FilerType,
+				FilerGroup: *options.FilerGroup,
 			})
 			if err != nil {
 				return err

weed/wdclient/masterclient.go

@@ -15,6 +15,7 @@ import (
 )
 
 type MasterClient struct {
+	FilerGroup     string
 	clientType     string
 	clientHost     pb.ServerAddress
 	currentMaster  pb.ServerAddress
@@ -26,8 +27,9 @@ type MasterClient struct {
 	OnPeerUpdate func(update *master_pb.ClusterNodeUpdate)
 }
 
-func NewMasterClient(grpcDialOption grpc.DialOption, clientType string, clientHost pb.ServerAddress, clientDataCenter string, masters map[string]pb.ServerAddress) *MasterClient {
+func NewMasterClient(grpcDialOption grpc.DialOption, filerGroup string, clientType string, clientHost pb.ServerAddress, clientDataCenter string, masters map[string]pb.ServerAddress) *MasterClient {
 	return &MasterClient{
+		FilerGroup:     filerGroup,
 		clientType:     clientType,
 		clientHost:     clientHost,
 		masters:        masters,
@@ -53,7 +55,7 @@ func (mc *MasterClient) WaitUntilConnected() {
 }
 
 func (mc *MasterClient) KeepConnectedToMaster() {
-	glog.V(1).Infof("%s masterClient bootstraps with masters %v", mc.clientType, mc.masters)
+	glog.V(1).Infof("%s.%s masterClient bootstraps with masters %v", mc.FilerGroup, mc.clientType, mc.masters)
 	for {
 		mc.tryAllMasters()
 		time.Sleep(time.Second)
@@ -101,7 +103,7 @@ func (mc *MasterClient) tryAllMasters() {
 }
 
 func (mc *MasterClient) tryConnectToMaster(master pb.ServerAddress) (nextHintedLeader pb.ServerAddress) {
-	glog.V(1).Infof("%s masterClient Connecting to master %v", mc.clientType, master)
+	glog.V(1).Infof("%s.%s masterClient Connecting to master %v", mc.FilerGroup, mc.clientType, master)
 	stats.MasterClientConnectCounter.WithLabelValues("total").Inc()
 	gprcErr := pb.WithMasterClient(true, master, mc.grpcDialOption, func(client master_pb.SeaweedClient) error {
 		ctx, cancel := context.WithCancel(context.Background())
@@ -109,28 +111,29 @@ func (mc *MasterClient) tryConnectToMaster(master pb.ServerAddress) (nextHintedL
 
 		stream, err := client.KeepConnected(ctx)
 		if err != nil {
-			glog.V(1).Infof("%s masterClient failed to keep connected to %s: %v", mc.clientType, master, err)
+			glog.V(1).Infof("%s.%s masterClient failed to keep connected to %s: %v", mc.FilerGroup, mc.clientType, master, err)
 			stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToKeepConnected).Inc()
 			return err
 		}
 
 		if err = stream.Send(&master_pb.KeepConnectedRequest{
+			FilerGroup:    mc.FilerGroup,
 			ClientType:    mc.clientType,
 			ClientAddress: string(mc.clientHost),
 			Version:       util.Version(),
 		}); err != nil {
-			glog.V(0).Infof("%s masterClient failed to send to %s: %v", mc.clientType, master, err)
+			glog.V(0).Infof("%s.%s masterClient failed to send to %s: %v", mc.FilerGroup, mc.clientType, master, err)
 			stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToSend).Inc()
 			return err
 		}
 
-		glog.V(1).Infof("%s masterClient Connected to %v", mc.clientType, master)
+		glog.V(1).Infof("%s.%s masterClient Connected to %v", mc.FilerGroup, mc.clientType, master)
 		mc.currentMaster = master
 
 		for {
 			resp, err := stream.Recv()
 			if err != nil {
-				glog.V(0).Infof("%s masterClient failed to receive from %s: %v", mc.clientType, master, err)
+				glog.V(0).Infof("%s.%s masterClient failed to receive from %s: %v", mc.FilerGroup, mc.clientType, master, err)
 				stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToReceive).Inc()
 				return err
 			}
@@ -152,19 +155,19 @@ func (mc *MasterClient) tryConnectToMaster(master pb.ServerAddress) (nextHintedL
 					GrpcPort:   int(resp.VolumeLocation.GrpcPort),
 				}
 				for _, newVid := range resp.VolumeLocation.NewVids {
-					glog.V(1).Infof("%s: %s masterClient adds volume %d", mc.clientType, loc.Url, newVid)
+					glog.V(1).Infof("%s.%s: %s masterClient adds volume %d", mc.FilerGroup, mc.clientType, loc.Url, newVid)
 					mc.addLocation(newVid, loc)
 				}
 				for _, deletedVid := range resp.VolumeLocation.DeletedVids {
-					glog.V(1).Infof("%s: %s masterClient removes volume %d", mc.clientType, loc.Url, deletedVid)
+					glog.V(1).Infof("%s.%s: %s masterClient removes volume %d", mc.FilerGroup, mc.clientType, loc.Url, deletedVid)
 					mc.deleteLocation(deletedVid, loc)
 				}
 				for _, newEcVid := range resp.VolumeLocation.NewEcVids {
-					glog.V(1).Infof("%s: %s masterClient adds ec volume %d", mc.clientType, loc.Url, newEcVid)
+					glog.V(1).Infof("%s.%s: %s masterClient adds ec volume %d", mc.FilerGroup, mc.clientType, loc.Url, newEcVid)
 					mc.addEcLocation(newEcVid, loc)
 				}
 				for _, deletedEcVid := range resp.VolumeLocation.DeletedEcVids {
-					glog.V(1).Infof("%s: %s masterClient removes ec volume %d", mc.clientType, loc.Url, deletedEcVid)
+					glog.V(1).Infof("%s.%s: %s masterClient removes ec volume %d", mc.FilerGroup, mc.clientType, loc.Url, deletedEcVid)
 					mc.deleteEcLocation(deletedEcVid, loc)
 				}
 			}
@@ -172,13 +175,15 @@ func (mc *MasterClient) tryConnectToMaster(master pb.ServerAddress) (nextHintedL
 			if resp.ClusterNodeUpdate != nil {
 				update := resp.ClusterNodeUpdate
 				if mc.OnPeerUpdate != nil {
-					if update.IsAdd {
+					if update.FilerGroup == mc.FilerGroup {
-						glog.V(0).Infof("+ %s %s leader:%v\n", update.NodeType, update.Address, update.IsLeader)
+						if update.IsAdd {
-					} else {
+							glog.V(0).Infof("+ %s.%s %s leader:%v\n", update.FilerGroup, update.NodeType, update.Address, update.IsLeader)
-						glog.V(0).Infof("- %s %s leader:%v\n", update.NodeType, update.Address, update.IsLeader)
+						} else {
+							glog.V(0).Infof("- %s.%s %s leader:%v\n", update.FilerGroup, update.NodeType, update.Address, update.IsLeader)
+						}
+						stats.MasterClientConnectCounter.WithLabelValues(stats.OnPeerUpdate).Inc()
+						mc.OnPeerUpdate(update)
 					}
-					stats.MasterClientConnectCounter.WithLabelValues(stats.OnPeerUpdate).Inc()
-					mc.OnPeerUpdate(update)
 				}
 			}
 
@@ -187,7 +192,7 @@ func (mc *MasterClient) tryConnectToMaster(master pb.ServerAddress) (nextHintedL
 	})
 	if gprcErr != nil {
 		stats.MasterClientConnectCounter.WithLabelValues(stats.Failed).Inc()
-		glog.V(1).Infof("%s masterClient failed to connect with master %v: %v", mc.clientType, master, gprcErr)
+		glog.V(1).Infof("%s.%s masterClient failed to connect with master %v: %v", mc.FilerGroup, mc.clientType, master, gprcErr)
 	}
 	return
 }