diff --git a/weed/pb/master.proto b/weed/pb/master.proto
index 4db956de5..e0a1ea253 100644
--- a/weed/pb/master.proto
+++ b/weed/pb/master.proto
@@ -27,6 +27,10 @@ service Seaweed {
   }
   rpc VacuumVolume (VacuumVolumeRequest) returns (VacuumVolumeResponse) {
   }
+  rpc VolumeMarkReadonly (VolumeMarkReadonlyRequest) returns (VolumeMarkReadonlyResponse) {
+  }
+  rpc VolumeMarkWritable (VolumeMarkWritableRequest) returns (VolumeMarkWritableResponse) {
+  }
   rpc GetMasterConfiguration (GetMasterConfigurationRequest) returns (GetMasterConfigurationResponse) {
   }
   rpc ListClusterNodes (ListClusterNodesRequest) returns (ListClusterNodesResponse) {
@@ -303,6 +307,18 @@ message VacuumVolumeRequest {
 message VacuumVolumeResponse {
 }
 
+message VolumeMarkReadonlyRequest {
+  uint32 volume_id = 1;
+}
+message VolumeMarkReadonlyResponse {
+}
+
+message VolumeMarkWritableRequest {
+  uint32 volume_id = 1;
+}
+message VolumeMarkWritableResponse {
+}
+
 message GetMasterConfigurationRequest {
 }
 message GetMasterConfigurationResponse {
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 86ba470e0..72de358b2 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
-// 	protoc        v3.21.4
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.17.3
 // source: master.proto
 
 package master_pb
@@ -1611,7 +1611,9 @@ func (x *StatisticsResponse) GetFileCount() uint64 {
 	return 0
 }
 
+//
 // collection related
+//
 type Collection struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1846,7 +1848,9 @@ func (*CollectionDeleteResponse) Descriptor() ([]byte, []int) {
 	return file_master_proto_rawDescGZIP(), []int{23}
 }
 
+//
 // volume related
+//
 type DiskInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -2498,6 +2502,176 @@ func (*VacuumVolumeResponse) Descriptor() ([]byte, []int) {
 	return file_master_proto_rawDescGZIP(), []int{34}
 }
 
+type VolumeMarkReadonlyRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VolumeMarkReadonlyRequest) Reset() {
+	*x = VolumeMarkReadonlyRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[35]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMarkReadonlyRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMarkReadonlyRequest) ProtoMessage() {}
+
+func (x *VolumeMarkReadonlyRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[35]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeMarkReadonlyRequest.ProtoReflect.Descriptor instead.
+func (*VolumeMarkReadonlyRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{35}
+}
+
+func (x *VolumeMarkReadonlyRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+type VolumeMarkReadonlyResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeMarkReadonlyResponse) Reset() {
+	*x = VolumeMarkReadonlyResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[36]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMarkReadonlyResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMarkReadonlyResponse) ProtoMessage() {}
+
+func (x *VolumeMarkReadonlyResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[36]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeMarkReadonlyResponse.ProtoReflect.Descriptor instead.
+func (*VolumeMarkReadonlyResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{36}
+}
+
+type VolumeMarkWritableRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId,proto3" json:"volume_id,omitempty"`
+}
+
+func (x *VolumeMarkWritableRequest) Reset() {
+	*x = VolumeMarkWritableRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[37]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMarkWritableRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMarkWritableRequest) ProtoMessage() {}
+
+func (x *VolumeMarkWritableRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[37]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeMarkWritableRequest.ProtoReflect.Descriptor instead.
+func (*VolumeMarkWritableRequest) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{37}
+}
+
+func (x *VolumeMarkWritableRequest) GetVolumeId() uint32 {
+	if x != nil {
+		return x.VolumeId
+	}
+	return 0
+}
+
+type VolumeMarkWritableResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+}
+
+func (x *VolumeMarkWritableResponse) Reset() {
+	*x = VolumeMarkWritableResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_master_proto_msgTypes[38]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *VolumeMarkWritableResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeMarkWritableResponse) ProtoMessage() {}
+
+func (x *VolumeMarkWritableResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_master_proto_msgTypes[38]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use VolumeMarkWritableResponse.ProtoReflect.Descriptor instead.
+func (*VolumeMarkWritableResponse) Descriptor() ([]byte, []int) {
+	return file_master_proto_rawDescGZIP(), []int{38}
+}
+
 type GetMasterConfigurationRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -2507,7 +2681,7 @@ type GetMasterConfigurationRequest struct {
 func (x *GetMasterConfigurationRequest) Reset() {
 	*x = GetMasterConfigurationRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[35]
+		mi := &file_master_proto_msgTypes[39]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2520,7 +2694,7 @@ func (x *GetMasterConfigurationRequest) String() string {
 func (*GetMasterConfigurationRequest) ProtoMessage() {}
 
 func (x *GetMasterConfigurationRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[35]
+	mi := &file_master_proto_msgTypes[39]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2533,7 +2707,7 @@ func (x *GetMasterConfigurationRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetMasterConfigurationRequest.ProtoReflect.Descriptor instead.
 func (*GetMasterConfigurationRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{35}
+	return file_master_proto_rawDescGZIP(), []int{39}
 }
 
 type GetMasterConfigurationResponse struct {
@@ -2553,7 +2727,7 @@ type GetMasterConfigurationResponse struct {
 func (x *GetMasterConfigurationResponse) Reset() {
 	*x = GetMasterConfigurationResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[36]
+		mi := &file_master_proto_msgTypes[40]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2566,7 +2740,7 @@ func (x *GetMasterConfigurationResponse) String() string {
 func (*GetMasterConfigurationResponse) ProtoMessage() {}
 
 func (x *GetMasterConfigurationResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[36]
+	mi := &file_master_proto_msgTypes[40]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2579,7 +2753,7 @@ func (x *GetMasterConfigurationResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetMasterConfigurationResponse.ProtoReflect.Descriptor instead.
 func (*GetMasterConfigurationResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{36}
+	return file_master_proto_rawDescGZIP(), []int{40}
 }
 
 func (x *GetMasterConfigurationResponse) GetMetricsAddress() string {
@@ -2645,7 +2819,7 @@ type ListClusterNodesRequest struct {
 func (x *ListClusterNodesRequest) Reset() {
 	*x = ListClusterNodesRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[37]
+		mi := &file_master_proto_msgTypes[41]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2658,7 +2832,7 @@ func (x *ListClusterNodesRequest) String() string {
 func (*ListClusterNodesRequest) ProtoMessage() {}
 
 func (x *ListClusterNodesRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[37]
+	mi := &file_master_proto_msgTypes[41]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2671,7 +2845,7 @@ func (x *ListClusterNodesRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListClusterNodesRequest.ProtoReflect.Descriptor instead.
 func (*ListClusterNodesRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{37}
+	return file_master_proto_rawDescGZIP(), []int{41}
 }
 
 func (x *ListClusterNodesRequest) GetClientType() string {
@@ -2713,7 +2887,7 @@ type ListClusterNodesResponse struct {
 func (x *ListClusterNodesResponse) Reset() {
 	*x = ListClusterNodesResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[38]
+		mi := &file_master_proto_msgTypes[42]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2726,7 +2900,7 @@ func (x *ListClusterNodesResponse) String() string {
 func (*ListClusterNodesResponse) ProtoMessage() {}
 
 func (x *ListClusterNodesResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[38]
+	mi := &file_master_proto_msgTypes[42]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2739,7 +2913,7 @@ func (x *ListClusterNodesResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListClusterNodesResponse.ProtoReflect.Descriptor instead.
 func (*ListClusterNodesResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{38}
+	return file_master_proto_rawDescGZIP(), []int{42}
 }
 
 func (x *ListClusterNodesResponse) GetClusterNodes() []*ListClusterNodesResponse_ClusterNode {
@@ -2764,7 +2938,7 @@ type LeaseAdminTokenRequest struct {
 func (x *LeaseAdminTokenRequest) Reset() {
 	*x = LeaseAdminTokenRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[39]
+		mi := &file_master_proto_msgTypes[43]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2777,7 +2951,7 @@ func (x *LeaseAdminTokenRequest) String() string {
 func (*LeaseAdminTokenRequest) ProtoMessage() {}
 
 func (x *LeaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[39]
+	mi := &file_master_proto_msgTypes[43]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2790,7 +2964,7 @@ func (x *LeaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LeaseAdminTokenRequest.ProtoReflect.Descriptor instead.
 func (*LeaseAdminTokenRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{39}
+	return file_master_proto_rawDescGZIP(), []int{43}
 }
 
 func (x *LeaseAdminTokenRequest) GetPreviousToken() int64 {
@@ -2840,7 +3014,7 @@ type LeaseAdminTokenResponse struct {
 func (x *LeaseAdminTokenResponse) Reset() {
 	*x = LeaseAdminTokenResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[40]
+		mi := &file_master_proto_msgTypes[44]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2853,7 +3027,7 @@ func (x *LeaseAdminTokenResponse) String() string {
 func (*LeaseAdminTokenResponse) ProtoMessage() {}
 
 func (x *LeaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[40]
+	mi := &file_master_proto_msgTypes[44]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2866,7 +3040,7 @@ func (x *LeaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LeaseAdminTokenResponse.ProtoReflect.Descriptor instead.
 func (*LeaseAdminTokenResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{40}
+	return file_master_proto_rawDescGZIP(), []int{44}
 }
 
 func (x *LeaseAdminTokenResponse) GetToken() int64 {
@@ -2896,7 +3070,7 @@ type ReleaseAdminTokenRequest struct {
 func (x *ReleaseAdminTokenRequest) Reset() {
 	*x = ReleaseAdminTokenRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[41]
+		mi := &file_master_proto_msgTypes[45]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2909,7 +3083,7 @@ func (x *ReleaseAdminTokenRequest) String() string {
 func (*ReleaseAdminTokenRequest) ProtoMessage() {}
 
 func (x *ReleaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[41]
+	mi := &file_master_proto_msgTypes[45]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2922,7 +3096,7 @@ func (x *ReleaseAdminTokenRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReleaseAdminTokenRequest.ProtoReflect.Descriptor instead.
 func (*ReleaseAdminTokenRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{41}
+	return file_master_proto_rawDescGZIP(), []int{45}
 }
 
 func (x *ReleaseAdminTokenRequest) GetPreviousToken() int64 {
@@ -2955,7 +3129,7 @@ type ReleaseAdminTokenResponse struct {
 func (x *ReleaseAdminTokenResponse) Reset() {
 	*x = ReleaseAdminTokenResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[42]
+		mi := &file_master_proto_msgTypes[46]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2968,7 +3142,7 @@ func (x *ReleaseAdminTokenResponse) String() string {
 func (*ReleaseAdminTokenResponse) ProtoMessage() {}
 
 func (x *ReleaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[42]
+	mi := &file_master_proto_msgTypes[46]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2981,7 +3155,7 @@ func (x *ReleaseAdminTokenResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReleaseAdminTokenResponse.ProtoReflect.Descriptor instead.
 func (*ReleaseAdminTokenResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{42}
+	return file_master_proto_rawDescGZIP(), []int{46}
 }
 
 type PingRequest struct {
@@ -2996,7 +3170,7 @@ type PingRequest struct {
 func (x *PingRequest) Reset() {
 	*x = PingRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[43]
+		mi := &file_master_proto_msgTypes[47]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3009,7 +3183,7 @@ func (x *PingRequest) String() string {
 func (*PingRequest) ProtoMessage() {}
 
 func (x *PingRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[43]
+	mi := &file_master_proto_msgTypes[47]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3022,7 +3196,7 @@ func (x *PingRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PingRequest.ProtoReflect.Descriptor instead.
 func (*PingRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{43}
+	return file_master_proto_rawDescGZIP(), []int{47}
 }
 
 func (x *PingRequest) GetTarget() string {
@@ -3052,7 +3226,7 @@ type PingResponse struct {
 func (x *PingResponse) Reset() {
 	*x = PingResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[44]
+		mi := &file_master_proto_msgTypes[48]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3065,7 +3239,7 @@ func (x *PingResponse) String() string {
 func (*PingResponse) ProtoMessage() {}
 
 func (x *PingResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[44]
+	mi := &file_master_proto_msgTypes[48]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3078,7 +3252,7 @@ func (x *PingResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PingResponse.ProtoReflect.Descriptor instead.
 func (*PingResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{44}
+	return file_master_proto_rawDescGZIP(), []int{48}
 }
 
 func (x *PingResponse) GetStartTimeNs() int64 {
@@ -3115,7 +3289,7 @@ type RaftAddServerRequest struct {
 func (x *RaftAddServerRequest) Reset() {
 	*x = RaftAddServerRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[45]
+		mi := &file_master_proto_msgTypes[49]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3128,7 +3302,7 @@ func (x *RaftAddServerRequest) String() string {
 func (*RaftAddServerRequest) ProtoMessage() {}
 
 func (x *RaftAddServerRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[45]
+	mi := &file_master_proto_msgTypes[49]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3141,7 +3315,7 @@ func (x *RaftAddServerRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RaftAddServerRequest.ProtoReflect.Descriptor instead.
 func (*RaftAddServerRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{45}
+	return file_master_proto_rawDescGZIP(), []int{49}
 }
 
 func (x *RaftAddServerRequest) GetId() string {
@@ -3174,7 +3348,7 @@ type RaftAddServerResponse struct {
 func (x *RaftAddServerResponse) Reset() {
 	*x = RaftAddServerResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[46]
+		mi := &file_master_proto_msgTypes[50]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3187,7 +3361,7 @@ func (x *RaftAddServerResponse) String() string {
 func (*RaftAddServerResponse) ProtoMessage() {}
 
 func (x *RaftAddServerResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[46]
+	mi := &file_master_proto_msgTypes[50]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3200,7 +3374,7 @@ func (x *RaftAddServerResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RaftAddServerResponse.ProtoReflect.Descriptor instead.
 func (*RaftAddServerResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{46}
+	return file_master_proto_rawDescGZIP(), []int{50}
 }
 
 type RaftRemoveServerRequest struct {
@@ -3215,7 +3389,7 @@ type RaftRemoveServerRequest struct {
 func (x *RaftRemoveServerRequest) Reset() {
 	*x = RaftRemoveServerRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[47]
+		mi := &file_master_proto_msgTypes[51]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3228,7 +3402,7 @@ func (x *RaftRemoveServerRequest) String() string {
 func (*RaftRemoveServerRequest) ProtoMessage() {}
 
 func (x *RaftRemoveServerRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[47]
+	mi := &file_master_proto_msgTypes[51]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3241,7 +3415,7 @@ func (x *RaftRemoveServerRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RaftRemoveServerRequest.ProtoReflect.Descriptor instead.
 func (*RaftRemoveServerRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{47}
+	return file_master_proto_rawDescGZIP(), []int{51}
 }
 
 func (x *RaftRemoveServerRequest) GetId() string {
@@ -3267,7 +3441,7 @@ type RaftRemoveServerResponse struct {
 func (x *RaftRemoveServerResponse) Reset() {
 	*x = RaftRemoveServerResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[48]
+		mi := &file_master_proto_msgTypes[52]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3280,7 +3454,7 @@ func (x *RaftRemoveServerResponse) String() string {
 func (*RaftRemoveServerResponse) ProtoMessage() {}
 
 func (x *RaftRemoveServerResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[48]
+	mi := &file_master_proto_msgTypes[52]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3293,7 +3467,7 @@ func (x *RaftRemoveServerResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RaftRemoveServerResponse.ProtoReflect.Descriptor instead.
 func (*RaftRemoveServerResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{48}
+	return file_master_proto_rawDescGZIP(), []int{52}
 }
 
 type RaftListClusterServersRequest struct {
@@ -3305,7 +3479,7 @@ type RaftListClusterServersRequest struct {
 func (x *RaftListClusterServersRequest) Reset() {
 	*x = RaftListClusterServersRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[49]
+		mi := &file_master_proto_msgTypes[53]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3318,7 +3492,7 @@ func (x *RaftListClusterServersRequest) String() string {
 func (*RaftListClusterServersRequest) ProtoMessage() {}
 
 func (x *RaftListClusterServersRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[49]
+	mi := &file_master_proto_msgTypes[53]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3331,7 +3505,7 @@ func (x *RaftListClusterServersRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RaftListClusterServersRequest.ProtoReflect.Descriptor instead.
 func (*RaftListClusterServersRequest) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{49}
+	return file_master_proto_rawDescGZIP(), []int{53}
 }
 
 type RaftListClusterServersResponse struct {
@@ -3345,7 +3519,7 @@ type RaftListClusterServersResponse struct {
 func (x *RaftListClusterServersResponse) Reset() {
 	*x = RaftListClusterServersResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[50]
+		mi := &file_master_proto_msgTypes[54]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3358,7 +3532,7 @@ func (x *RaftListClusterServersResponse) String() string {
 func (*RaftListClusterServersResponse) ProtoMessage() {}
 
 func (x *RaftListClusterServersResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[50]
+	mi := &file_master_proto_msgTypes[54]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3371,7 +3545,7 @@ func (x *RaftListClusterServersResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RaftListClusterServersResponse.ProtoReflect.Descriptor instead.
 func (*RaftListClusterServersResponse) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{50}
+	return file_master_proto_rawDescGZIP(), []int{54}
 }
 
 func (x *RaftListClusterServersResponse) GetClusterServers() []*RaftListClusterServersResponse_ClusterServers {
@@ -3394,7 +3568,7 @@ type SuperBlockExtra_ErasureCoding struct {
 func (x *SuperBlockExtra_ErasureCoding) Reset() {
 	*x = SuperBlockExtra_ErasureCoding{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[53]
+		mi := &file_master_proto_msgTypes[57]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3407,7 +3581,7 @@ func (x *SuperBlockExtra_ErasureCoding) String() string {
 func (*SuperBlockExtra_ErasureCoding) ProtoMessage() {}
 
 func (x *SuperBlockExtra_ErasureCoding) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[53]
+	mi := &file_master_proto_msgTypes[57]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3458,7 +3632,7 @@ type LookupVolumeResponse_VolumeIdLocation struct {
 func (x *LookupVolumeResponse_VolumeIdLocation) Reset() {
 	*x = LookupVolumeResponse_VolumeIdLocation{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[54]
+		mi := &file_master_proto_msgTypes[58]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3471,7 +3645,7 @@ func (x *LookupVolumeResponse_VolumeIdLocation) String() string {
 func (*LookupVolumeResponse_VolumeIdLocation) ProtoMessage() {}
 
 func (x *LookupVolumeResponse_VolumeIdLocation) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[54]
+	mi := &file_master_proto_msgTypes[58]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3527,7 +3701,7 @@ type LookupEcVolumeResponse_EcShardIdLocation struct {
 func (x *LookupEcVolumeResponse_EcShardIdLocation) Reset() {
 	*x = LookupEcVolumeResponse_EcShardIdLocation{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[59]
+		mi := &file_master_proto_msgTypes[63]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3540,7 +3714,7 @@ func (x *LookupEcVolumeResponse_EcShardIdLocation) String() string {
 func (*LookupEcVolumeResponse_EcShardIdLocation) ProtoMessage() {}
 
 func (x *LookupEcVolumeResponse_EcShardIdLocation) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[59]
+	mi := &file_master_proto_msgTypes[63]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3586,7 +3760,7 @@ type ListClusterNodesResponse_ClusterNode struct {
 func (x *ListClusterNodesResponse_ClusterNode) Reset() {
 	*x = ListClusterNodesResponse_ClusterNode{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[60]
+		mi := &file_master_proto_msgTypes[64]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3599,7 +3773,7 @@ func (x *ListClusterNodesResponse_ClusterNode) String() string {
 func (*ListClusterNodesResponse_ClusterNode) ProtoMessage() {}
 
 func (x *ListClusterNodesResponse_ClusterNode) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[60]
+	mi := &file_master_proto_msgTypes[64]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3612,7 +3786,7 @@ func (x *ListClusterNodesResponse_ClusterNode) ProtoReflect() protoreflect.Messa
 
 // Deprecated: Use ListClusterNodesResponse_ClusterNode.ProtoReflect.Descriptor instead.
 func (*ListClusterNodesResponse_ClusterNode) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{38, 0}
+	return file_master_proto_rawDescGZIP(), []int{42, 0}
 }
 
 func (x *ListClusterNodesResponse_ClusterNode) GetAddress() string {
@@ -3670,7 +3844,7 @@ type RaftListClusterServersResponse_ClusterServers struct {
 func (x *RaftListClusterServersResponse_ClusterServers) Reset() {
 	*x = RaftListClusterServersResponse_ClusterServers{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_master_proto_msgTypes[61]
+		mi := &file_master_proto_msgTypes[65]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -3683,7 +3857,7 @@ func (x *RaftListClusterServersResponse_ClusterServers) String() string {
 func (*RaftListClusterServersResponse_ClusterServers) ProtoMessage() {}
 
 func (x *RaftListClusterServersResponse_ClusterServers) ProtoReflect() protoreflect.Message {
-	mi := &file_master_proto_msgTypes[61]
+	mi := &file_master_proto_msgTypes[65]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3696,7 +3870,7 @@ func (x *RaftListClusterServersResponse_ClusterServers) ProtoReflect() protorefl
 
 // Deprecated: Use RaftListClusterServersResponse_ClusterServers.ProtoReflect.Descriptor instead.
 func (*RaftListClusterServersResponse_ClusterServers) Descriptor() ([]byte, []int) {
-	return file_master_proto_rawDescGZIP(), []int{50, 0}
+	return file_master_proto_rawDescGZIP(), []int{54, 0}
 }
 
 func (x *RaftListClusterServersResponse_ClusterServers) GetId() string {
@@ -4162,6 +4336,17 @@ var file_master_proto_rawDesc = []byte{
 	0x63, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x63, 0x6f, 0x6c,
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@@ -4285,7 +4470,7 @@ var file_master_proto_rawDesc = []byte{
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@@ -4337,57 +4522,70 @@ var file_master_proto_rawDesc = []byte{
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 }
 
 var (
@@ -4402,7 +4600,7 @@ func file_master_proto_rawDescGZIP() []byte {
 	return file_master_proto_rawDescData
 }
 
-var file_master_proto_msgTypes = make([]protoimpl.MessageInfo, 62)
+var file_master_proto_msgTypes = make([]protoimpl.MessageInfo, 66)
 var file_master_proto_goTypes = []interface{}{
 	(*Heartbeat)(nil),                             // 0: master_pb.Heartbeat
 	(*HeartbeatResponse)(nil),                     // 1: master_pb.HeartbeatResponse
@@ -4439,33 +4637,37 @@ var file_master_proto_goTypes = []interface{}{
 	(*LookupEcVolumeResponse)(nil),                // 32: master_pb.LookupEcVolumeResponse
 	(*VacuumVolumeRequest)(nil),                   // 33: master_pb.VacuumVolumeRequest
 	(*VacuumVolumeResponse)(nil),                  // 34: master_pb.VacuumVolumeResponse
-	(*GetMasterConfigurationRequest)(nil),         // 35: master_pb.GetMasterConfigurationRequest
-	(*GetMasterConfigurationResponse)(nil),        // 36: master_pb.GetMasterConfigurationResponse
-	(*ListClusterNodesRequest)(nil),               // 37: master_pb.ListClusterNodesRequest
-	(*ListClusterNodesResponse)(nil),              // 38: master_pb.ListClusterNodesResponse
-	(*LeaseAdminTokenRequest)(nil),                // 39: master_pb.LeaseAdminTokenRequest
-	(*LeaseAdminTokenResponse)(nil),               // 40: master_pb.LeaseAdminTokenResponse
-	(*ReleaseAdminTokenRequest)(nil),              // 41: master_pb.ReleaseAdminTokenRequest
-	(*ReleaseAdminTokenResponse)(nil),             // 42: master_pb.ReleaseAdminTokenResponse
-	(*PingRequest)(nil),                           // 43: master_pb.PingRequest
-	(*PingResponse)(nil),                          // 44: master_pb.PingResponse
-	(*RaftAddServerRequest)(nil),                  // 45: master_pb.RaftAddServerRequest
-	(*RaftAddServerResponse)(nil),                 // 46: master_pb.RaftAddServerResponse
-	(*RaftRemoveServerRequest)(nil),               // 47: master_pb.RaftRemoveServerRequest
-	(*RaftRemoveServerResponse)(nil),              // 48: master_pb.RaftRemoveServerResponse
-	(*RaftListClusterServersRequest)(nil),         // 49: master_pb.RaftListClusterServersRequest
-	(*RaftListClusterServersResponse)(nil),        // 50: master_pb.RaftListClusterServersResponse
-	nil,                                           // 51: master_pb.Heartbeat.MaxVolumeCountsEntry
-	nil,                                           // 52: master_pb.StorageBackend.PropertiesEntry
-	(*SuperBlockExtra_ErasureCoding)(nil),         // 53: master_pb.SuperBlockExtra.ErasureCoding
-	(*LookupVolumeResponse_VolumeIdLocation)(nil), // 54: master_pb.LookupVolumeResponse.VolumeIdLocation
-	nil, // 55: master_pb.DataNodeInfo.DiskInfosEntry
-	nil, // 56: master_pb.RackInfo.DiskInfosEntry
-	nil, // 57: master_pb.DataCenterInfo.DiskInfosEntry
-	nil, // 58: master_pb.TopologyInfo.DiskInfosEntry
-	(*LookupEcVolumeResponse_EcShardIdLocation)(nil),      // 59: master_pb.LookupEcVolumeResponse.EcShardIdLocation
-	(*ListClusterNodesResponse_ClusterNode)(nil),          // 60: master_pb.ListClusterNodesResponse.ClusterNode
-	(*RaftListClusterServersResponse_ClusterServers)(nil), // 61: master_pb.RaftListClusterServersResponse.ClusterServers
+	(*VolumeMarkReadonlyRequest)(nil),             // 35: master_pb.VolumeMarkReadonlyRequest
+	(*VolumeMarkReadonlyResponse)(nil),            // 36: master_pb.VolumeMarkReadonlyResponse
+	(*VolumeMarkWritableRequest)(nil),             // 37: master_pb.VolumeMarkWritableRequest
+	(*VolumeMarkWritableResponse)(nil),            // 38: master_pb.VolumeMarkWritableResponse
+	(*GetMasterConfigurationRequest)(nil),         // 39: master_pb.GetMasterConfigurationRequest
+	(*GetMasterConfigurationResponse)(nil),        // 40: master_pb.GetMasterConfigurationResponse
+	(*ListClusterNodesRequest)(nil),               // 41: master_pb.ListClusterNodesRequest
+	(*ListClusterNodesResponse)(nil),              // 42: master_pb.ListClusterNodesResponse
+	(*LeaseAdminTokenRequest)(nil),                // 43: master_pb.LeaseAdminTokenRequest
+	(*LeaseAdminTokenResponse)(nil),               // 44: master_pb.LeaseAdminTokenResponse
+	(*ReleaseAdminTokenRequest)(nil),              // 45: master_pb.ReleaseAdminTokenRequest
+	(*ReleaseAdminTokenResponse)(nil),             // 46: master_pb.ReleaseAdminTokenResponse
+	(*PingRequest)(nil),                           // 47: master_pb.PingRequest
+	(*PingResponse)(nil),                          // 48: master_pb.PingResponse
+	(*RaftAddServerRequest)(nil),                  // 49: master_pb.RaftAddServerRequest
+	(*RaftAddServerResponse)(nil),                 // 50: master_pb.RaftAddServerResponse
+	(*RaftRemoveServerRequest)(nil),               // 51: master_pb.RaftRemoveServerRequest
+	(*RaftRemoveServerResponse)(nil),              // 52: master_pb.RaftRemoveServerResponse
+	(*RaftListClusterServersRequest)(nil),         // 53: master_pb.RaftListClusterServersRequest
+	(*RaftListClusterServersResponse)(nil),        // 54: master_pb.RaftListClusterServersResponse
+	nil,                                           // 55: master_pb.Heartbeat.MaxVolumeCountsEntry
+	nil,                                           // 56: master_pb.StorageBackend.PropertiesEntry
+	(*SuperBlockExtra_ErasureCoding)(nil),         // 57: master_pb.SuperBlockExtra.ErasureCoding
+	(*LookupVolumeResponse_VolumeIdLocation)(nil), // 58: master_pb.LookupVolumeResponse.VolumeIdLocation
+	nil, // 59: master_pb.DataNodeInfo.DiskInfosEntry
+	nil, // 60: master_pb.RackInfo.DiskInfosEntry
+	nil, // 61: master_pb.DataCenterInfo.DiskInfosEntry
+	nil, // 62: master_pb.TopologyInfo.DiskInfosEntry
+	(*LookupEcVolumeResponse_EcShardIdLocation)(nil),      // 63: master_pb.LookupEcVolumeResponse.EcShardIdLocation
+	(*ListClusterNodesResponse_ClusterNode)(nil),          // 64: master_pb.ListClusterNodesResponse.ClusterNode
+	(*RaftListClusterServersResponse_ClusterServers)(nil), // 65: master_pb.RaftListClusterServersResponse.ClusterServers
 }
 var file_master_proto_depIdxs = []int32{
 	2,  // 0: master_pb.Heartbeat.volumes:type_name -> master_pb.VolumeInformationMessage
@@ -4474,30 +4676,30 @@ var file_master_proto_depIdxs = []int32{
 	4,  // 3: master_pb.Heartbeat.ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
 	4,  // 4: master_pb.Heartbeat.new_ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
 	4,  // 5: master_pb.Heartbeat.deleted_ec_shards:type_name -> master_pb.VolumeEcShardInformationMessage
-	51, // 6: master_pb.Heartbeat.max_volume_counts:type_name -> master_pb.Heartbeat.MaxVolumeCountsEntry
+	55, // 6: master_pb.Heartbeat.max_volume_counts:type_name -> master_pb.Heartbeat.MaxVolumeCountsEntry
 	5,  // 7: master_pb.HeartbeatResponse.storage_backends:type_name -> master_pb.StorageBackend
-	52, // 8: master_pb.StorageBackend.properties:type_name -> master_pb.StorageBackend.PropertiesEntry
-	53, // 9: master_pb.SuperBlockExtra.erasure_coding:type_name -> master_pb.SuperBlockExtra.ErasureCoding
+	56, // 8: master_pb.StorageBackend.properties:type_name -> master_pb.StorageBackend.PropertiesEntry
+	57, // 9: master_pb.SuperBlockExtra.erasure_coding:type_name -> master_pb.SuperBlockExtra.ErasureCoding
 	9,  // 10: master_pb.KeepConnectedResponse.volume_location:type_name -> master_pb.VolumeLocation
 	10, // 11: master_pb.KeepConnectedResponse.cluster_node_update:type_name -> master_pb.ClusterNodeUpdate
-	54, // 12: master_pb.LookupVolumeResponse.volume_id_locations:type_name -> master_pb.LookupVolumeResponse.VolumeIdLocation
+	58, // 12: master_pb.LookupVolumeResponse.volume_id_locations:type_name -> master_pb.LookupVolumeResponse.VolumeIdLocation
 	14, // 13: master_pb.AssignResponse.replicas:type_name -> master_pb.Location
 	14, // 14: master_pb.AssignResponse.location:type_name -> master_pb.Location
 	19, // 15: master_pb.CollectionListResponse.collections:type_name -> master_pb.Collection
 	2,  // 16: master_pb.DiskInfo.volume_infos:type_name -> master_pb.VolumeInformationMessage
 	4,  // 17: master_pb.DiskInfo.ec_shard_infos:type_name -> master_pb.VolumeEcShardInformationMessage
-	55, // 18: master_pb.DataNodeInfo.diskInfos:type_name -> master_pb.DataNodeInfo.DiskInfosEntry
+	59, // 18: master_pb.DataNodeInfo.diskInfos:type_name -> master_pb.DataNodeInfo.DiskInfosEntry
 	25, // 19: master_pb.RackInfo.data_node_infos:type_name -> master_pb.DataNodeInfo
-	56, // 20: master_pb.RackInfo.diskInfos:type_name -> master_pb.RackInfo.DiskInfosEntry
+	60, // 20: master_pb.RackInfo.diskInfos:type_name -> master_pb.RackInfo.DiskInfosEntry
 	26, // 21: master_pb.DataCenterInfo.rack_infos:type_name -> master_pb.RackInfo
-	57, // 22: master_pb.DataCenterInfo.diskInfos:type_name -> master_pb.DataCenterInfo.DiskInfosEntry
+	61, // 22: master_pb.DataCenterInfo.diskInfos:type_name -> master_pb.DataCenterInfo.DiskInfosEntry
 	27, // 23: master_pb.TopologyInfo.data_center_infos:type_name -> master_pb.DataCenterInfo
-	58, // 24: master_pb.TopologyInfo.diskInfos:type_name -> master_pb.TopologyInfo.DiskInfosEntry
+	62, // 24: master_pb.TopologyInfo.diskInfos:type_name -> master_pb.TopologyInfo.DiskInfosEntry
 	28, // 25: master_pb.VolumeListResponse.topology_info:type_name -> master_pb.TopologyInfo
-	59, // 26: master_pb.LookupEcVolumeResponse.shard_id_locations:type_name -> master_pb.LookupEcVolumeResponse.EcShardIdLocation
+	63, // 26: master_pb.LookupEcVolumeResponse.shard_id_locations:type_name -> master_pb.LookupEcVolumeResponse.EcShardIdLocation
 	5,  // 27: master_pb.GetMasterConfigurationResponse.storage_backends:type_name -> master_pb.StorageBackend
-	60, // 28: master_pb.ListClusterNodesResponse.cluster_nodes:type_name -> master_pb.ListClusterNodesResponse.ClusterNode
-	61, // 29: master_pb.RaftListClusterServersResponse.cluster_servers:type_name -> master_pb.RaftListClusterServersResponse.ClusterServers
+	64, // 28: master_pb.ListClusterNodesResponse.cluster_nodes:type_name -> master_pb.ListClusterNodesResponse.ClusterNode
+	65, // 29: master_pb.RaftListClusterServersResponse.cluster_servers:type_name -> master_pb.RaftListClusterServersResponse.ClusterServers
 	14, // 30: master_pb.LookupVolumeResponse.VolumeIdLocation.locations:type_name -> master_pb.Location
 	24, // 31: master_pb.DataNodeInfo.DiskInfosEntry.value:type_name -> master_pb.DiskInfo
 	24, // 32: master_pb.RackInfo.DiskInfosEntry.value:type_name -> master_pb.DiskInfo
@@ -4514,34 +4716,38 @@ var file_master_proto_depIdxs = []int32{
 	29, // 43: master_pb.Seaweed.VolumeList:input_type -> master_pb.VolumeListRequest
 	31, // 44: master_pb.Seaweed.LookupEcVolume:input_type -> master_pb.LookupEcVolumeRequest
 	33, // 45: master_pb.Seaweed.VacuumVolume:input_type -> master_pb.VacuumVolumeRequest
-	35, // 46: master_pb.Seaweed.GetMasterConfiguration:input_type -> master_pb.GetMasterConfigurationRequest
-	37, // 47: master_pb.Seaweed.ListClusterNodes:input_type -> master_pb.ListClusterNodesRequest
-	39, // 48: master_pb.Seaweed.LeaseAdminToken:input_type -> master_pb.LeaseAdminTokenRequest
-	41, // 49: master_pb.Seaweed.ReleaseAdminToken:input_type -> master_pb.ReleaseAdminTokenRequest
-	43, // 50: master_pb.Seaweed.Ping:input_type -> master_pb.PingRequest
-	49, // 51: master_pb.Seaweed.RaftListClusterServers:input_type -> master_pb.RaftListClusterServersRequest
-	45, // 52: master_pb.Seaweed.RaftAddServer:input_type -> master_pb.RaftAddServerRequest
-	47, // 53: master_pb.Seaweed.RaftRemoveServer:input_type -> master_pb.RaftRemoveServerRequest
-	1,  // 54: master_pb.Seaweed.SendHeartbeat:output_type -> master_pb.HeartbeatResponse
-	11, // 55: master_pb.Seaweed.KeepConnected:output_type -> master_pb.KeepConnectedResponse
-	13, // 56: master_pb.Seaweed.LookupVolume:output_type -> master_pb.LookupVolumeResponse
-	16, // 57: master_pb.Seaweed.Assign:output_type -> master_pb.AssignResponse
-	18, // 58: master_pb.Seaweed.Statistics:output_type -> master_pb.StatisticsResponse
-	21, // 59: master_pb.Seaweed.CollectionList:output_type -> master_pb.CollectionListResponse
-	23, // 60: master_pb.Seaweed.CollectionDelete:output_type -> master_pb.CollectionDeleteResponse
-	30, // 61: master_pb.Seaweed.VolumeList:output_type -> master_pb.VolumeListResponse
-	32, // 62: master_pb.Seaweed.LookupEcVolume:output_type -> master_pb.LookupEcVolumeResponse
-	34, // 63: master_pb.Seaweed.VacuumVolume:output_type -> master_pb.VacuumVolumeResponse
-	36, // 64: master_pb.Seaweed.GetMasterConfiguration:output_type -> master_pb.GetMasterConfigurationResponse
-	38, // 65: master_pb.Seaweed.ListClusterNodes:output_type -> master_pb.ListClusterNodesResponse
-	40, // 66: master_pb.Seaweed.LeaseAdminToken:output_type -> master_pb.LeaseAdminTokenResponse
-	42, // 67: master_pb.Seaweed.ReleaseAdminToken:output_type -> master_pb.ReleaseAdminTokenResponse
-	44, // 68: master_pb.Seaweed.Ping:output_type -> master_pb.PingResponse
-	50, // 69: master_pb.Seaweed.RaftListClusterServers:output_type -> master_pb.RaftListClusterServersResponse
-	46, // 70: master_pb.Seaweed.RaftAddServer:output_type -> master_pb.RaftAddServerResponse
-	48, // 71: master_pb.Seaweed.RaftRemoveServer:output_type -> master_pb.RaftRemoveServerResponse
-	54, // [54:72] is the sub-list for method output_type
-	36, // [36:54] is the sub-list for method input_type
+	35, // 46: master_pb.Seaweed.VolumeMarkReadonly:input_type -> master_pb.VolumeMarkReadonlyRequest
+	37, // 47: master_pb.Seaweed.VolumeMarkWritable:input_type -> master_pb.VolumeMarkWritableRequest
+	39, // 48: master_pb.Seaweed.GetMasterConfiguration:input_type -> master_pb.GetMasterConfigurationRequest
+	41, // 49: master_pb.Seaweed.ListClusterNodes:input_type -> master_pb.ListClusterNodesRequest
+	43, // 50: master_pb.Seaweed.LeaseAdminToken:input_type -> master_pb.LeaseAdminTokenRequest
+	45, // 51: master_pb.Seaweed.ReleaseAdminToken:input_type -> master_pb.ReleaseAdminTokenRequest
+	47, // 52: master_pb.Seaweed.Ping:input_type -> master_pb.PingRequest
+	53, // 53: master_pb.Seaweed.RaftListClusterServers:input_type -> master_pb.RaftListClusterServersRequest
+	49, // 54: master_pb.Seaweed.RaftAddServer:input_type -> master_pb.RaftAddServerRequest
+	51, // 55: master_pb.Seaweed.RaftRemoveServer:input_type -> master_pb.RaftRemoveServerRequest
+	1,  // 56: master_pb.Seaweed.SendHeartbeat:output_type -> master_pb.HeartbeatResponse
+	11, // 57: master_pb.Seaweed.KeepConnected:output_type -> master_pb.KeepConnectedResponse
+	13, // 58: master_pb.Seaweed.LookupVolume:output_type -> master_pb.LookupVolumeResponse
+	16, // 59: master_pb.Seaweed.Assign:output_type -> master_pb.AssignResponse
+	18, // 60: master_pb.Seaweed.Statistics:output_type -> master_pb.StatisticsResponse
+	21, // 61: master_pb.Seaweed.CollectionList:output_type -> master_pb.CollectionListResponse
+	23, // 62: master_pb.Seaweed.CollectionDelete:output_type -> master_pb.CollectionDeleteResponse
+	30, // 63: master_pb.Seaweed.VolumeList:output_type -> master_pb.VolumeListResponse
+	32, // 64: master_pb.Seaweed.LookupEcVolume:output_type -> master_pb.LookupEcVolumeResponse
+	34, // 65: master_pb.Seaweed.VacuumVolume:output_type -> master_pb.VacuumVolumeResponse
+	36, // 66: master_pb.Seaweed.VolumeMarkReadonly:output_type -> master_pb.VolumeMarkReadonlyResponse
+	38, // 67: master_pb.Seaweed.VolumeMarkWritable:output_type -> master_pb.VolumeMarkWritableResponse
+	40, // 68: master_pb.Seaweed.GetMasterConfiguration:output_type -> master_pb.GetMasterConfigurationResponse
+	42, // 69: master_pb.Seaweed.ListClusterNodes:output_type -> master_pb.ListClusterNodesResponse
+	44, // 70: master_pb.Seaweed.LeaseAdminToken:output_type -> master_pb.LeaseAdminTokenResponse
+	46, // 71: master_pb.Seaweed.ReleaseAdminToken:output_type -> master_pb.ReleaseAdminTokenResponse
+	48, // 72: master_pb.Seaweed.Ping:output_type -> master_pb.PingResponse
+	54, // 73: master_pb.Seaweed.RaftListClusterServers:output_type -> master_pb.RaftListClusterServersResponse
+	50, // 74: master_pb.Seaweed.RaftAddServer:output_type -> master_pb.RaftAddServerResponse
+	52, // 75: master_pb.Seaweed.RaftRemoveServer:output_type -> master_pb.RaftRemoveServerResponse
+	56, // [56:76] is the sub-list for method output_type
+	36, // [36:56] is the sub-list for method input_type
 	36, // [36:36] is the sub-list for extension type_name
 	36, // [36:36] is the sub-list for extension extendee
 	0,  // [0:36] is the sub-list for field type_name
@@ -4974,7 +5180,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[35].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetMasterConfigurationRequest); i {
+			switch v := v.(*VolumeMarkReadonlyRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4986,7 +5192,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[36].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetMasterConfigurationResponse); i {
+			switch v := v.(*VolumeMarkReadonlyResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -4998,7 +5204,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[37].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListClusterNodesRequest); i {
+			switch v := v.(*VolumeMarkWritableRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5010,7 +5216,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[38].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListClusterNodesResponse); i {
+			switch v := v.(*VolumeMarkWritableResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5022,7 +5228,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[39].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*LeaseAdminTokenRequest); i {
+			switch v := v.(*GetMasterConfigurationRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5034,7 +5240,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*LeaseAdminTokenResponse); i {
+			switch v := v.(*GetMasterConfigurationResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5046,7 +5252,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReleaseAdminTokenRequest); i {
+			switch v := v.(*ListClusterNodesRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5058,7 +5264,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReleaseAdminTokenResponse); i {
+			switch v := v.(*ListClusterNodesResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5070,7 +5276,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PingRequest); i {
+			switch v := v.(*LeaseAdminTokenRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5082,7 +5288,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[44].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PingResponse); i {
+			switch v := v.(*LeaseAdminTokenResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5094,7 +5300,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[45].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RaftAddServerRequest); i {
+			switch v := v.(*ReleaseAdminTokenRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5106,7 +5312,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[46].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RaftAddServerResponse); i {
+			switch v := v.(*ReleaseAdminTokenResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5118,7 +5324,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[47].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RaftRemoveServerRequest); i {
+			switch v := v.(*PingRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5130,7 +5336,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[48].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RaftRemoveServerResponse); i {
+			switch v := v.(*PingResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5142,7 +5348,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[49].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RaftListClusterServersRequest); i {
+			switch v := v.(*RaftAddServerRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5154,7 +5360,31 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[50].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RaftListClusterServersResponse); i {
+			switch v := v.(*RaftAddServerResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[51].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RaftRemoveServerRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[52].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RaftRemoveServerResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5166,7 +5396,7 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[53].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SuperBlockExtra_ErasureCoding); i {
+			switch v := v.(*RaftListClusterServersRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -5178,6 +5408,30 @@ func file_master_proto_init() {
 			}
 		}
 		file_master_proto_msgTypes[54].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*RaftListClusterServersResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[57].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SuperBlockExtra_ErasureCoding); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_master_proto_msgTypes[58].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*LookupVolumeResponse_VolumeIdLocation); i {
 			case 0:
 				return &v.state
@@ -5189,7 +5443,7 @@ func file_master_proto_init() {
 				return nil
 			}
 		}
-		file_master_proto_msgTypes[59].Exporter = func(v interface{}, i int) interface{} {
+		file_master_proto_msgTypes[63].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*LookupEcVolumeResponse_EcShardIdLocation); i {
 			case 0:
 				return &v.state
@@ -5201,7 +5455,7 @@ func file_master_proto_init() {
 				return nil
 			}
 		}
-		file_master_proto_msgTypes[60].Exporter = func(v interface{}, i int) interface{} {
+		file_master_proto_msgTypes[64].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListClusterNodesResponse_ClusterNode); i {
 			case 0:
 				return &v.state
@@ -5213,7 +5467,7 @@ func file_master_proto_init() {
 				return nil
 			}
 		}
-		file_master_proto_msgTypes[61].Exporter = func(v interface{}, i int) interface{} {
+		file_master_proto_msgTypes[65].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*RaftListClusterServersResponse_ClusterServers); i {
 			case 0:
 				return &v.state
@@ -5232,7 +5486,7 @@ func file_master_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_master_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   62,
+			NumMessages:   66,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/weed/pb/master_pb/master_grpc.pb.go b/weed/pb/master_pb/master_grpc.pb.go
index fd01a2442..d4a74c715 100644
--- a/weed/pb/master_pb/master_grpc.pb.go
+++ b/weed/pb/master_pb/master_grpc.pb.go
@@ -1,8 +1,4 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.2.0
-// - protoc             v3.21.4
-// source: master.proto
 
 package master_pb
 
@@ -32,6 +28,8 @@ type SeaweedClient interface {
 	VolumeList(ctx context.Context, in *VolumeListRequest, opts ...grpc.CallOption) (*VolumeListResponse, error)
 	LookupEcVolume(ctx context.Context, in *LookupEcVolumeRequest, opts ...grpc.CallOption) (*LookupEcVolumeResponse, error)
 	VacuumVolume(ctx context.Context, in *VacuumVolumeRequest, opts ...grpc.CallOption) (*VacuumVolumeResponse, error)
+	VolumeMarkReadonly(ctx context.Context, in *VolumeMarkReadonlyRequest, opts ...grpc.CallOption) (*VolumeMarkReadonlyResponse, error)
+	VolumeMarkWritable(ctx context.Context, in *VolumeMarkWritableRequest, opts ...grpc.CallOption) (*VolumeMarkWritableResponse, error)
 	GetMasterConfiguration(ctx context.Context, in *GetMasterConfigurationRequest, opts ...grpc.CallOption) (*GetMasterConfigurationResponse, error)
 	ListClusterNodes(ctx context.Context, in *ListClusterNodesRequest, opts ...grpc.CallOption) (*ListClusterNodesResponse, error)
 	LeaseAdminToken(ctx context.Context, in *LeaseAdminTokenRequest, opts ...grpc.CallOption) (*LeaseAdminTokenResponse, error)
@@ -184,6 +182,24 @@ func (c *seaweedClient) VacuumVolume(ctx context.Context, in *VacuumVolumeReques
 	return out, nil
 }
 
+func (c *seaweedClient) VolumeMarkReadonly(ctx context.Context, in *VolumeMarkReadonlyRequest, opts ...grpc.CallOption) (*VolumeMarkReadonlyResponse, error) {
+	out := new(VolumeMarkReadonlyResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/VolumeMarkReadonly", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) VolumeMarkWritable(ctx context.Context, in *VolumeMarkWritableRequest, opts ...grpc.CallOption) (*VolumeMarkWritableResponse, error) {
+	out := new(VolumeMarkWritableResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/VolumeMarkWritable", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *seaweedClient) GetMasterConfiguration(ctx context.Context, in *GetMasterConfigurationRequest, opts ...grpc.CallOption) (*GetMasterConfigurationResponse, error) {
 	out := new(GetMasterConfigurationResponse)
 	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/GetMasterConfiguration", in, out, opts...)
@@ -270,6 +286,8 @@ type SeaweedServer interface {
 	VolumeList(context.Context, *VolumeListRequest) (*VolumeListResponse, error)
 	LookupEcVolume(context.Context, *LookupEcVolumeRequest) (*LookupEcVolumeResponse, error)
 	VacuumVolume(context.Context, *VacuumVolumeRequest) (*VacuumVolumeResponse, error)
+	VolumeMarkReadonly(context.Context, *VolumeMarkReadonlyRequest) (*VolumeMarkReadonlyResponse, error)
+	VolumeMarkWritable(context.Context, *VolumeMarkWritableRequest) (*VolumeMarkWritableResponse, error)
 	GetMasterConfiguration(context.Context, *GetMasterConfigurationRequest) (*GetMasterConfigurationResponse, error)
 	ListClusterNodes(context.Context, *ListClusterNodesRequest) (*ListClusterNodesResponse, error)
 	LeaseAdminToken(context.Context, *LeaseAdminTokenRequest) (*LeaseAdminTokenResponse, error)
@@ -315,6 +333,12 @@ func (UnimplementedSeaweedServer) LookupEcVolume(context.Context, *LookupEcVolum
 func (UnimplementedSeaweedServer) VacuumVolume(context.Context, *VacuumVolumeRequest) (*VacuumVolumeResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method VacuumVolume not implemented")
 }
+func (UnimplementedSeaweedServer) VolumeMarkReadonly(context.Context, *VolumeMarkReadonlyRequest) (*VolumeMarkReadonlyResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeMarkReadonly not implemented")
+}
+func (UnimplementedSeaweedServer) VolumeMarkWritable(context.Context, *VolumeMarkWritableRequest) (*VolumeMarkWritableResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method VolumeMarkWritable not implemented")
+}
 func (UnimplementedSeaweedServer) GetMasterConfiguration(context.Context, *GetMasterConfigurationRequest) (*GetMasterConfigurationResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetMasterConfiguration not implemented")
 }
@@ -548,6 +572,42 @@ func _Seaweed_VacuumVolume_Handler(srv interface{}, ctx context.Context, dec fun
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Seaweed_VolumeMarkReadonly_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeMarkReadonlyRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).VolumeMarkReadonly(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/VolumeMarkReadonly",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).VolumeMarkReadonly(ctx, req.(*VolumeMarkReadonlyRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_VolumeMarkWritable_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumeMarkWritableRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).VolumeMarkWritable(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/VolumeMarkWritable",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).VolumeMarkWritable(ctx, req.(*VolumeMarkWritableRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Seaweed_GetMasterConfiguration_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(GetMasterConfigurationRequest)
 	if err := dec(in); err != nil {
@@ -731,6 +791,14 @@ var Seaweed_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "VacuumVolume",
 			Handler:    _Seaweed_VacuumVolume_Handler,
 		},
+		{
+			MethodName: "VolumeMarkReadonly",
+			Handler:    _Seaweed_VolumeMarkReadonly_Handler,
+		},
+		{
+			MethodName: "VolumeMarkWritable",
+			Handler:    _Seaweed_VolumeMarkWritable_Handler,
+		},
 		{
 			MethodName: "GetMasterConfiguration",
 			Handler:    _Seaweed_GetMasterConfiguration_Handler,
diff --git a/weed/server/volume_grpc_admin.go b/weed/server/volume_grpc_admin.go
index aace63fd8..34babe6b2 100644
--- a/weed/server/volume_grpc_admin.go
+++ b/weed/server/volume_grpc_admin.go
@@ -148,6 +148,19 @@ func (vs *VolumeServer) VolumeMarkReadonly(ctx context.Context, req *volume_serv
 
 	resp := &volume_server_pb.VolumeMarkReadonlyResponse{}
 
+	if grpcErr := pb.WithMasterClient(false, vs.GetMaster(), vs.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
+		_, err := client.VolumeMarkReadonly(context.Background(), &master_pb.VolumeMarkReadonlyRequest{
+			VolumeId: req.VolumeId,
+		})
+		if err != nil {
+			return fmt.Errorf("set volume %d to read only on master: %v", req.VolumeId, err)
+		}
+		return nil
+	}); grpcErr != nil {
+		glog.V(0).Infof("connect to %s: %v", vs.GetMaster(), grpcErr)
+		return resp, fmt.Errorf("grpc VolumeMarkReadonly with master: %v", vs.GetMaster(), grpcErr)
+	}
+
 	err := vs.store.MarkVolumeReadonly(needle.VolumeId(req.VolumeId))
 
 	if err != nil {
@@ -163,6 +176,19 @@ func (vs *VolumeServer) VolumeMarkWritable(ctx context.Context, req *volume_serv
 
 	resp := &volume_server_pb.VolumeMarkWritableResponse{}
 
+	if grpcErr := pb.WithMasterClient(false, vs.GetMaster(), vs.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
+		_, err := client.VolumeMarkWritable(context.Background(), &master_pb.VolumeMarkWritableRequest{
+			VolumeId: req.VolumeId,
+		})
+		if err != nil {
+			return fmt.Errorf("set volume %d to writable on master: %v", req.VolumeId, err)
+		}
+		return nil
+	}); grpcErr != nil {
+		glog.V(0).Infof("connect to %s: %v", vs.GetMaster(), grpcErr)
+		return resp, fmt.Errorf("grpc VolumeMarkWritable with master: %v", vs.GetMaster(), grpcErr)
+	}
+
 	err := vs.store.MarkVolumeWritable(needle.VolumeId(req.VolumeId))
 
 	if err != nil {