filer: cross cluster synchronization

2020-09-09 11:21:23 -07:00
parent 4fc0bd1a81
commit 387ab6796f
32 changed files with 1072 additions and 217 deletions
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -58,6 +58,12 @@ service SeaweedFiler {
    rpc LocateBroker (LocateBrokerRequest) returns (LocateBrokerResponse) {
    }

+    rpc KvGet (KvGetRequest) returns (KvGetResponse) {
+    }
+
+    rpc KvPut (KvPutRequest) returns (KvPutResponse) {
+    }
+
 }

 //////////////////////////////////////////////////
@@ -308,3 +314,19 @@ message LocateBrokerResponse {
    }
    repeated Resource resources = 2;
 }
+
+// Key-Value operations
+message KvGetRequest {
+    bytes key = 1;
+}
+message KvGetResponse {
+    bytes value = 1;
+    string error = 2;
+}
+message KvPutRequest {
+    bytes key = 1;
+    bytes value = 2;
+}
+message KvPutResponse {
+    string error = 1;
+}
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -2608,6 +2608,211 @@ func (x *LocateBrokerResponse) GetResources() []*LocateBrokerResponse_Resource {
 	return nil
 }

+// Key-Value operations
+type KvGetRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+}
+
+func (x *KvGetRequest) Reset() {
+	*x = KvGetRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[40]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KvGetRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KvGetRequest) ProtoMessage() {}
+
+func (x *KvGetRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[40]
+	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 KvGetRequest.ProtoReflect.Descriptor instead.
+func (*KvGetRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{40}
+}
+
+func (x *KvGetRequest) GetKey() []byte {
+	if x != nil {
+		return x.Key
+	}
+	return nil
+}
+
+type KvGetResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Value []byte `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
+	Error string `protobuf:"bytes,2,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *KvGetResponse) Reset() {
+	*x = KvGetResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[41]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KvGetResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KvGetResponse) ProtoMessage() {}
+
+func (x *KvGetResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[41]
+	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 KvGetResponse.ProtoReflect.Descriptor instead.
+func (*KvGetResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{41}
+}
+
+func (x *KvGetResponse) GetValue() []byte {
+	if x != nil {
+		return x.Value
+	}
+	return nil
+}
+
+func (x *KvGetResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
+type KvPutRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Key   []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *KvPutRequest) Reset() {
+	*x = KvPutRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[42]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KvPutRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KvPutRequest) ProtoMessage() {}
+
+func (x *KvPutRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[42]
+	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 KvPutRequest.ProtoReflect.Descriptor instead.
+func (*KvPutRequest) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{42}
+}
+
+func (x *KvPutRequest) GetKey() []byte {
+	if x != nil {
+		return x.Key
+	}
+	return nil
+}
+
+func (x *KvPutRequest) GetValue() []byte {
+	if x != nil {
+		return x.Value
+	}
+	return nil
+}
+
+type KvPutResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Error string `protobuf:"bytes,1,opt,name=error,proto3" json:"error,omitempty"`
+}
+
+func (x *KvPutResponse) Reset() {
+	*x = KvPutResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_filer_proto_msgTypes[43]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *KvPutResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*KvPutResponse) ProtoMessage() {}
+
+func (x *KvPutResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_filer_proto_msgTypes[43]
+	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 KvPutResponse.ProtoReflect.Descriptor instead.
+func (*KvPutResponse) Descriptor() ([]byte, []int) {
+	return file_filer_proto_rawDescGZIP(), []int{43}
+}
+
+func (x *KvPutResponse) GetError() string {
+	if x != nil {
+		return x.Error
+	}
+	return ""
+}
+
 // if found, send the exact address
 // if not found, send the full list of existing brokers
 type LocateBrokerResponse_Resource struct {
@@ -2622,7 +2827,7 @@ type LocateBrokerResponse_Resource struct {
 func (x *LocateBrokerResponse_Resource) Reset() {
 	*x = LocateBrokerResponse_Resource{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_filer_proto_msgTypes[42]
+		mi := &file_filer_proto_msgTypes[46]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2635,7 +2840,7 @@ func (x *LocateBrokerResponse_Resource) String() string {
 func (*LocateBrokerResponse_Resource) ProtoMessage() {}

 func (x *LocateBrokerResponse_Resource) ProtoReflect() protoreflect.Message {
-	mi := &file_filer_proto_msgTypes[42]
+	mi := &file_filer_proto_msgTypes[46]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -3001,102 +3206,121 @@ var file_filer_proto_rawDesc = []byte{
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+	0x74, 0x61, 0x12, 0x22, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x53, 0x75,
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+	0x62, 0x2e, 0x53, 0x75, 0x62, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65, 0x4d, 0x65, 0x74, 0x61, 0x64,
+	0x61, 0x74, 0x61, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x30, 0x01, 0x12,
+	0x56, 0x0a, 0x0d, 0x4b, 0x65, 0x65, 0x70, 0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x65, 0x64,
+	0x12, 0x1e, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4b, 0x65, 0x65, 0x70,
+	0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x65, 0x64, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
+	0x1a, 0x1f, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4b, 0x65, 0x65, 0x70,
+	0x43, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x65, 0x64, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73,
+	0x65, 0x22, 0x00, 0x28, 0x01, 0x30, 0x01, 0x12, 0x4f, 0x0a, 0x0c, 0x4c, 0x6f, 0x63, 0x61, 0x74,
+	0x65, 0x42, 0x72, 0x6f, 0x6b, 0x65, 0x72, 0x12, 0x1d, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f,
+	0x70, 0x62, 0x2e, 0x4c, 0x6f, 0x63, 0x61, 0x74, 0x65, 0x42, 0x72, 0x6f, 0x6b, 0x65, 0x72, 0x52,
+	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1e, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70,
+	0x62, 0x2e, 0x4c, 0x6f, 0x63, 0x61, 0x74, 0x65, 0x42, 0x72, 0x6f, 0x6b, 0x65, 0x72, 0x52, 0x65,
+	0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x3a, 0x0a, 0x05, 0x4b, 0x76, 0x47, 0x65,
+	0x74, 0x12, 0x16, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4b, 0x76, 0x47,
+	0x65, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x17, 0x2e, 0x66, 0x69, 0x6c, 0x65,
+	0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4b, 0x76, 0x47, 0x65, 0x74, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
+	0x73, 0x65, 0x22, 0x00, 0x12, 0x3a, 0x0a, 0x05, 0x4b, 0x76, 0x50, 0x75, 0x74, 0x12, 0x16, 0x2e,
+	0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4b, 0x76, 0x50, 0x75, 0x74, 0x52, 0x65,
+	0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x17, 0x2e, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70, 0x62,
+	0x2e, 0x4b, 0x76, 0x50, 0x75, 0x74, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00,
+	0x42, 0x4f, 0x0a, 0x10, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2e, 0x63, 0x6c,
+	0x69, 0x65, 0x6e, 0x74, 0x42, 0x0a, 0x46, 0x69, 0x6c, 0x65, 0x72, 0x50, 0x72, 0x6f, 0x74, 0x6f,
+	0x5a, 0x2f, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72,
+	0x69, 0x73, 0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73, 0x65, 0x61, 0x77, 0x65, 0x65, 0x64, 0x66, 0x73,
+	0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x66, 0x69, 0x6c, 0x65, 0x72, 0x5f, 0x70,
+	0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
@@ -3111,7 +3335,7 @@ func file_filer_proto_rawDescGZIP() []byte {
 	return file_filer_proto_rawDescData
 }

-var file_filer_proto_msgTypes = make([]protoimpl.MessageInfo, 43)
+var file_filer_proto_msgTypes = make([]protoimpl.MessageInfo, 47)
 var file_filer_proto_goTypes = []interface{}{
 	(*LookupDirectoryEntryRequest)(nil),   // 0: filer_pb.LookupDirectoryEntryRequest
 	(*LookupDirectoryEntryResponse)(nil),  // 1: filer_pb.LookupDirectoryEntryResponse
@@ -3153,16 +3377,20 @@ var file_filer_proto_goTypes = []interface{}{
 	(*KeepConnectedResponse)(nil),         // 37: filer_pb.KeepConnectedResponse
 	(*LocateBrokerRequest)(nil),           // 38: filer_pb.LocateBrokerRequest
 	(*LocateBrokerResponse)(nil),          // 39: filer_pb.LocateBrokerResponse
-	nil,                                   // 40: filer_pb.Entry.ExtendedEntry
-	nil,                                   // 41: filer_pb.LookupVolumeResponse.LocationsMapEntry
-	(*LocateBrokerResponse_Resource)(nil), // 42: filer_pb.LocateBrokerResponse.Resource
+	(*KvGetRequest)(nil),                  // 40: filer_pb.KvGetRequest
+	(*KvGetResponse)(nil),                 // 41: filer_pb.KvGetResponse
+	(*KvPutRequest)(nil),                  // 42: filer_pb.KvPutRequest
+	(*KvPutResponse)(nil),                 // 43: filer_pb.KvPutResponse
+	nil,                                   // 44: filer_pb.Entry.ExtendedEntry
+	nil,                                   // 45: filer_pb.LookupVolumeResponse.LocationsMapEntry
+	(*LocateBrokerResponse_Resource)(nil), // 46: filer_pb.LocateBrokerResponse.Resource
 }
 var file_filer_proto_depIdxs = []int32{
 	4,  // 0: filer_pb.LookupDirectoryEntryResponse.entry:type_name -> filer_pb.Entry
 	4,  // 1: filer_pb.ListEntriesResponse.entry:type_name -> filer_pb.Entry
 	7,  // 2: filer_pb.Entry.chunks:type_name -> filer_pb.FileChunk
 	10, // 3: filer_pb.Entry.attributes:type_name -> filer_pb.FuseAttributes
-	40, // 4: filer_pb.Entry.extended:type_name -> filer_pb.Entry.ExtendedEntry
+	44, // 4: filer_pb.Entry.extended:type_name -> filer_pb.Entry.ExtendedEntry
 	4,  // 5: filer_pb.FullEntry.entry:type_name -> filer_pb.Entry
 	4,  // 6: filer_pb.EventNotification.old_entry:type_name -> filer_pb.Entry
 	4,  // 7: filer_pb.EventNotification.new_entry:type_name -> filer_pb.Entry
@@ -3173,9 +3401,9 @@ var file_filer_proto_depIdxs = []int32{
 	4,  // 12: filer_pb.UpdateEntryRequest.entry:type_name -> filer_pb.Entry
 	7,  // 13: filer_pb.AppendToEntryRequest.chunks:type_name -> filer_pb.FileChunk
 	25, // 14: filer_pb.Locations.locations:type_name -> filer_pb.Location
-	41, // 15: filer_pb.LookupVolumeResponse.locations_map:type_name -> filer_pb.LookupVolumeResponse.LocationsMapEntry
+	45, // 15: filer_pb.LookupVolumeResponse.locations_map:type_name -> filer_pb.LookupVolumeResponse.LocationsMapEntry
 	6,  // 16: filer_pb.SubscribeMetadataResponse.event_notification:type_name -> filer_pb.EventNotification
-	42, // 17: filer_pb.LocateBrokerResponse.resources:type_name -> filer_pb.LocateBrokerResponse.Resource
+	46, // 17: filer_pb.LocateBrokerResponse.resources:type_name -> filer_pb.LocateBrokerResponse.Resource
 	24, // 18: filer_pb.LookupVolumeResponse.LocationsMapEntry.value:type_name -> filer_pb.Locations
 	0,  // 19: filer_pb.SeaweedFiler.LookupDirectoryEntry:input_type -> filer_pb.LookupDirectoryEntryRequest
 	2,  // 20: filer_pb.SeaweedFiler.ListEntries:input_type -> filer_pb.ListEntriesRequest
@@ -3193,24 +3421,28 @@ var file_filer_proto_depIdxs = []int32{
 	33, // 32: filer_pb.SeaweedFiler.SubscribeLocalMetadata:input_type -> filer_pb.SubscribeMetadataRequest
 	36, // 33: filer_pb.SeaweedFiler.KeepConnected:input_type -> filer_pb.KeepConnectedRequest
 	38, // 34: filer_pb.SeaweedFiler.LocateBroker:input_type -> filer_pb.LocateBrokerRequest
-	1,  // 35: filer_pb.SeaweedFiler.LookupDirectoryEntry:output_type -> filer_pb.LookupDirectoryEntryResponse
-	3,  // 36: filer_pb.SeaweedFiler.ListEntries:output_type -> filer_pb.ListEntriesResponse
-	12, // 37: filer_pb.SeaweedFiler.CreateEntry:output_type -> filer_pb.CreateEntryResponse
-	14, // 38: filer_pb.SeaweedFiler.UpdateEntry:output_type -> filer_pb.UpdateEntryResponse
-	16, // 39: filer_pb.SeaweedFiler.AppendToEntry:output_type -> filer_pb.AppendToEntryResponse
-	18, // 40: filer_pb.SeaweedFiler.DeleteEntry:output_type -> filer_pb.DeleteEntryResponse
-	20, // 41: filer_pb.SeaweedFiler.AtomicRenameEntry:output_type -> filer_pb.AtomicRenameEntryResponse
-	22, // 42: filer_pb.SeaweedFiler.AssignVolume:output_type -> filer_pb.AssignVolumeResponse
-	26, // 43: filer_pb.SeaweedFiler.LookupVolume:output_type -> filer_pb.LookupVolumeResponse
-	28, // 44: filer_pb.SeaweedFiler.DeleteCollection:output_type -> filer_pb.DeleteCollectionResponse
-	30, // 45: filer_pb.SeaweedFiler.Statistics:output_type -> filer_pb.StatisticsResponse
-	32, // 46: filer_pb.SeaweedFiler.GetFilerConfiguration:output_type -> filer_pb.GetFilerConfigurationResponse
-	34, // 47: filer_pb.SeaweedFiler.SubscribeMetadata:output_type -> filer_pb.SubscribeMetadataResponse
-	34, // 48: filer_pb.SeaweedFiler.SubscribeLocalMetadata:output_type -> filer_pb.SubscribeMetadataResponse
-	37, // 49: filer_pb.SeaweedFiler.KeepConnected:output_type -> filer_pb.KeepConnectedResponse
-	39, // 50: filer_pb.SeaweedFiler.LocateBroker:output_type -> filer_pb.LocateBrokerResponse
-	35, // [35:51] is the sub-list for method output_type
-	19, // [19:35] is the sub-list for method input_type
+	40, // 35: filer_pb.SeaweedFiler.KvGet:input_type -> filer_pb.KvGetRequest
+	42, // 36: filer_pb.SeaweedFiler.KvPut:input_type -> filer_pb.KvPutRequest
+	1,  // 37: filer_pb.SeaweedFiler.LookupDirectoryEntry:output_type -> filer_pb.LookupDirectoryEntryResponse
+	3,  // 38: filer_pb.SeaweedFiler.ListEntries:output_type -> filer_pb.ListEntriesResponse
+	12, // 39: filer_pb.SeaweedFiler.CreateEntry:output_type -> filer_pb.CreateEntryResponse
+	14, // 40: filer_pb.SeaweedFiler.UpdateEntry:output_type -> filer_pb.UpdateEntryResponse
+	16, // 41: filer_pb.SeaweedFiler.AppendToEntry:output_type -> filer_pb.AppendToEntryResponse
+	18, // 42: filer_pb.SeaweedFiler.DeleteEntry:output_type -> filer_pb.DeleteEntryResponse
+	20, // 43: filer_pb.SeaweedFiler.AtomicRenameEntry:output_type -> filer_pb.AtomicRenameEntryResponse
+	22, // 44: filer_pb.SeaweedFiler.AssignVolume:output_type -> filer_pb.AssignVolumeResponse
+	26, // 45: filer_pb.SeaweedFiler.LookupVolume:output_type -> filer_pb.LookupVolumeResponse
+	28, // 46: filer_pb.SeaweedFiler.DeleteCollection:output_type -> filer_pb.DeleteCollectionResponse
+	30, // 47: filer_pb.SeaweedFiler.Statistics:output_type -> filer_pb.StatisticsResponse
+	32, // 48: filer_pb.SeaweedFiler.GetFilerConfiguration:output_type -> filer_pb.GetFilerConfigurationResponse
+	34, // 49: filer_pb.SeaweedFiler.SubscribeMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	34, // 50: filer_pb.SeaweedFiler.SubscribeLocalMetadata:output_type -> filer_pb.SubscribeMetadataResponse
+	37, // 51: filer_pb.SeaweedFiler.KeepConnected:output_type -> filer_pb.KeepConnectedResponse
+	39, // 52: filer_pb.SeaweedFiler.LocateBroker:output_type -> filer_pb.LocateBrokerResponse
+	41, // 53: filer_pb.SeaweedFiler.KvGet:output_type -> filer_pb.KvGetResponse
+	43, // 54: filer_pb.SeaweedFiler.KvPut:output_type -> filer_pb.KvPutResponse
+	37, // [37:55] is the sub-list for method output_type
+	19, // [19:37] is the sub-list for method input_type
 	19, // [19:19] is the sub-list for extension type_name
 	19, // [19:19] is the sub-list for extension extendee
 	0,  // [0:19] is the sub-list for field type_name
@@ -3702,7 +3934,55 @@ func file_filer_proto_init() {
 				return nil
 			}
 		}
+		file_filer_proto_msgTypes[40].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*KvGetRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[41].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*KvGetResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 		file_filer_proto_msgTypes[42].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*KvPutRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[43].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*KvPutResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_filer_proto_msgTypes[46].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*LocateBrokerResponse_Resource); i {
 			case 0:
 				return &v.state
@@ -3721,7 +4001,7 @@ func file_filer_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_filer_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   43,
+			NumMessages:   47,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
@@ -3763,6 +4043,8 @@ type SeaweedFilerClient interface {
 	SubscribeLocalMetadata(ctx context.Context, in *SubscribeMetadataRequest, opts ...grpc.CallOption) (SeaweedFiler_SubscribeLocalMetadataClient, error)
 	KeepConnected(ctx context.Context, opts ...grpc.CallOption) (SeaweedFiler_KeepConnectedClient, error)
 	LocateBroker(ctx context.Context, in *LocateBrokerRequest, opts ...grpc.CallOption) (*LocateBrokerResponse, error)
+	KvGet(ctx context.Context, in *KvGetRequest, opts ...grpc.CallOption) (*KvGetResponse, error)
+	KvPut(ctx context.Context, in *KvPutRequest, opts ...grpc.CallOption) (*KvPutResponse, error)
 }

 type seaweedFilerClient struct {
@@ -4008,6 +4290,24 @@ func (c *seaweedFilerClient) LocateBroker(ctx context.Context, in *LocateBrokerR
 	return out, nil
 }

+func (c *seaweedFilerClient) KvGet(ctx context.Context, in *KvGetRequest, opts ...grpc.CallOption) (*KvGetResponse, error) {
+	out := new(KvGetResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/KvGet", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedFilerClient) KvPut(ctx context.Context, in *KvPutRequest, opts ...grpc.CallOption) (*KvPutResponse, error) {
+	out := new(KvPutResponse)
+	err := c.cc.Invoke(ctx, "/filer_pb.SeaweedFiler/KvPut", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // SeaweedFilerServer is the server API for SeaweedFiler service.
 type SeaweedFilerServer interface {
 	LookupDirectoryEntry(context.Context, *LookupDirectoryEntryRequest) (*LookupDirectoryEntryResponse, error)
@@ -4026,6 +4326,8 @@ type SeaweedFilerServer interface {
 	SubscribeLocalMetadata(*SubscribeMetadataRequest, SeaweedFiler_SubscribeLocalMetadataServer) error
 	KeepConnected(SeaweedFiler_KeepConnectedServer) error
 	LocateBroker(context.Context, *LocateBrokerRequest) (*LocateBrokerResponse, error)
+	KvGet(context.Context, *KvGetRequest) (*KvGetResponse, error)
+	KvPut(context.Context, *KvPutRequest) (*KvPutResponse, error)
 }

 // UnimplementedSeaweedFilerServer can be embedded to have forward compatible implementations.
@@ -4080,6 +4382,12 @@ func (*UnimplementedSeaweedFilerServer) KeepConnected(SeaweedFiler_KeepConnected
 func (*UnimplementedSeaweedFilerServer) LocateBroker(context.Context, *LocateBrokerRequest) (*LocateBrokerResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method LocateBroker not implemented")
 }
+func (*UnimplementedSeaweedFilerServer) KvGet(context.Context, *KvGetRequest) (*KvGetResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method KvGet not implemented")
+}
+func (*UnimplementedSeaweedFilerServer) KvPut(context.Context, *KvPutRequest) (*KvPutResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method KvPut not implemented")
+}

 func RegisterSeaweedFilerServer(s *grpc.Server, srv SeaweedFilerServer) {
 	s.RegisterService(&_SeaweedFiler_serviceDesc, srv)
@@ -4390,6 +4698,42 @@ func _SeaweedFiler_LocateBroker_Handler(srv interface{}, ctx context.Context, de
 	return interceptor(ctx, in, info, handler)
 }

+func _SeaweedFiler_KvGet_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(KvGetRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).KvGet(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/KvGet",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).KvGet(ctx, req.(*KvGetRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _SeaweedFiler_KvPut_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(KvPutRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedFilerServer).KvPut(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/filer_pb.SeaweedFiler/KvPut",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedFilerServer).KvPut(ctx, req.(*KvPutRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "filer_pb.SeaweedFiler",
 	HandlerType: (*SeaweedFilerServer)(nil),
@@ -4442,6 +4786,14 @@ var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 			MethodName: "LocateBroker",
 			Handler:    _SeaweedFiler_LocateBroker_Handler,
 		},
+		{
+			MethodName: "KvGet",
+			Handler:    _SeaweedFiler_KvGet_Handler,
+		},
+		{
+			MethodName: "KvPut",
+			Handler:    _SeaweedFiler_KvPut_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
--- a/weed/pb/filer_pb/filer_client.go
+++ b/weed/pb/filer_pb/filer_client.go
@@ -214,7 +214,7 @@ func MkFile(filerClient FilerClient, parentDirectoryPath string, fileName string
 	})
 }

-func Remove(filerClient FilerClient, parentDirectoryPath, name string, isDeleteData, isRecursive, ignoreRecursiveErr, isFromOtherCluster bool, signature int32) error {
+func Remove(filerClient FilerClient, parentDirectoryPath, name string, isDeleteData, isRecursive, ignoreRecursiveErr, isFromOtherCluster bool, signatures []int32) error {
 	return filerClient.WithFilerClient(func(client SeaweedFilerClient) error {

 		deleteEntryRequest := &DeleteEntryRequest{
@@ -224,9 +224,7 @@ func Remove(filerClient FilerClient, parentDirectoryPath, name string, isDeleteD
 			IsRecursive:          isRecursive,
 			IgnoreRecursiveError: ignoreRecursiveErr,
 			IsFromOtherCluster:   isFromOtherCluster,
-		}
-		if signature != 0 {
-			deleteEntryRequest.Signatures = []int32{signature}
+			Signatures:           signatures,
 		}
 		if resp, err := client.DeleteEntry(context.Background(), deleteEntryRequest); err != nil {
 			if strings.Contains(err.Error(), ErrNotFound.Error()) {
--- a/weed/pb/filer_pb/filer_pb_helper.go
+++ b/weed/pb/filer_pb/filer_pb_helper.go
@@ -59,6 +59,15 @@ func BeforeEntrySerialization(chunks []*FileChunk) {
 	}
 }

+func EnsureFid(chunk *FileChunk) {
+	if chunk.Fid != nil {
+		return
+	}
+	if fid, err := ToFileIdObject(chunk.FileId); err == nil {
+		chunk.Fid = fid
+	}
+}
+
 func AfterEntryDeserialization(chunks []*FileChunk) {

 	for _, chunk := range chunks {