diff --git a/pkgs/ioswitch/dag/var.go b/pkgs/ioswitch/dag/var.go
index af74643..b8928cd 100644
--- a/pkgs/ioswitch/dag/var.go
+++ b/pkgs/ioswitch/dag/var.go
@@ -64,17 +64,34 @@ func (v *Var) To() *EndPointSlots {
 	return &v.to
 }
 
-func (v *Var) Connect(to Node, slotIdx int) {
+func (v *Var) ValueTo(to Node, slotIdx int) {
 	v.To().Add(EndPoint{Node: to, SlotIndex: slotIdx})
 	to.InputValues().Set(slotIdx, v)
 }
 
-func (v *Var) Disconnect(node Node, slotIdx int) {
+func (v *Var) ValueNotTo(node Node, slotIdx int) {
 	v.to.Remove(EndPoint{Node: node, SlotIndex: slotIdx})
 	node.InputValues().Set(slotIdx, nil)
 }
 
-func (v *Var) DisconnectAll() {
+func (v *Var) StreamTo(to Node, slotIdx int) {
+	v.To().Add(EndPoint{Node: to, SlotIndex: slotIdx})
+	to.InputStreams().Set(slotIdx, v)
+}
+
+func (v *Var) StreamNotTo(node Node, slotIdx int) {
+	v.to.Remove(EndPoint{Node: node, SlotIndex: slotIdx})
+	node.InputStreams().Set(slotIdx, nil)
+}
+
+func (v *Var) NoInputAllValue() {
+	for _, ed := range v.to {
+		ed.Node.InputValues().Set(ed.SlotIndex, nil)
+	}
+	v.to = nil
+}
+
+func (v *Var) NoInputAllStream() {
 	for _, ed := range v.to {
 		ed.Node.InputStreams().Set(ed.SlotIndex, nil)
 	}
diff --git a/pkgs/ioswitch/plan/generate.go b/pkgs/ioswitch/plan/generate.go
index db32a84..6d155d9 100644
--- a/pkgs/ioswitch/plan/generate.go
+++ b/pkgs/ioswitch/plan/generate.go
@@ -54,7 +54,7 @@ func generateSend(graph *ops.GraphNodeBuilder) {
 				// 将源节点的输出送到Hold指令，将Hold指令的输出送到Get指令
 				getNode.Get(holdType.HoldStream(out)).
 					// 将Get指令的输出送到目的地
-					Connect(to.Node, to.SlotIndex)
+					StreamTo(to.Node, to.SlotIndex)
 
 			case dag.EnvWorker:
 				// 如果是要送到Agent，则可以直接发送
@@ -62,7 +62,7 @@ func generateSend(graph *ops.GraphNodeBuilder) {
 				*n.Env() = *node.Env()
 
 				out.To().RemoveAt(0)
-				n.Send(out).Connect(to.Node, to.SlotIndex)
+				n.Send(out).StreamTo(to.Node, to.SlotIndex)
 			}
 		}
 
@@ -96,7 +96,7 @@ func generateSend(graph *ops.GraphNodeBuilder) {
 				// 将源节点的输出送到Hold指令，将Hold指令的输出送到Get指令
 				getNode.Get(holdNode.HoldVar(out)).
 					// 将Get指令的输出送到目的地
-					Connect(to.Node, to.SlotIndex)
+					ValueTo(to.Node, to.SlotIndex)
 
 			case dag.EnvWorker:
 				// 如果是要送到Agent，则可以直接发送
@@ -105,7 +105,7 @@ func generateSend(graph *ops.GraphNodeBuilder) {
 
 				out.To().RemoveAt(0)
 
-				t.Send(out).Connect(to.Node, to.SlotIndex)
+				t.Send(out).ValueTo(to.Node, to.SlotIndex)
 			}
 		}
 
diff --git a/pkgs/ioswitch/plan/ops/driver.go b/pkgs/ioswitch/plan/ops/driver.go
index 192e665..392b88a 100644
--- a/pkgs/ioswitch/plan/ops/driver.go
+++ b/pkgs/ioswitch/plan/ops/driver.go
@@ -54,7 +54,7 @@ func (b *GraphNodeBuilder) NewToDriver(handle *exec.DriverReadStream) *ToDriverN
 
 func (t *ToDriverNode) SetInput(v *dag.Var) {
 	t.InputStreams().EnsureSize(1)
-	v.Connect(t, 0)
+	v.StreamTo(t, 0)
 }
 
 func (t *ToDriverNode) Input() dag.Slot {
diff --git a/pkgs/ioswitch/plan/ops/drop.go b/pkgs/ioswitch/plan/ops/drop.go
index dcfdc78..f03283a 100644
--- a/pkgs/ioswitch/plan/ops/drop.go
+++ b/pkgs/ioswitch/plan/ops/drop.go
@@ -51,7 +51,7 @@ func (b *GraphNodeBuilder) NewDropStream() *DropNode {
 
 func (t *DropNode) SetInput(v *dag.Var) {
 	t.InputStreams().EnsureSize(1)
-	v.Connect(t, 0)
+	v.StreamTo(t, 0)
 }
 
 func (t *DropNode) GenerateOp() (exec.Op, error) {
diff --git a/pkgs/ioswitch/plan/ops/send.go b/pkgs/ioswitch/plan/ops/send.go
index 482630d..625f701 100644
--- a/pkgs/ioswitch/plan/ops/send.go
+++ b/pkgs/ioswitch/plan/ops/send.go
@@ -155,7 +155,7 @@ func (b *GraphNodeBuilder) NewSendStream(to exec.WorkerInfo) *SendStreamNode {
 
 func (t *SendStreamNode) Send(v *dag.Var) *dag.Var {
 	t.InputStreams().EnsureSize(1)
-	v.Connect(t, 0)
+	v.StreamTo(t, 0)
 	output := t.Graph().NewVar()
 	t.OutputStreams().Setup(t, output, 0)
 	return output
@@ -188,7 +188,7 @@ func (b *GraphNodeBuilder) NewSendValue(to exec.WorkerInfo) *SendValueNode {
 
 func (t *SendValueNode) Send(v *dag.Var) *dag.Var {
 	t.InputValues().EnsureSize(1)
-	v.Connect(t, 0)
+	v.ValueTo(t, 0)
 	output := t.Graph().NewVar()
 	t.OutputValues().Setup(t, output, 0)
 	return output
@@ -222,7 +222,7 @@ func (b *GraphNodeBuilder) NewGetStream(from exec.WorkerInfo) *GetStreamNode {
 
 func (t *GetStreamNode) Get(v *dag.Var) *dag.Var {
 	t.InputStreams().EnsureSize(1)
-	v.Connect(t, 0)
+	v.StreamTo(t, 0)
 	output := t.Graph().NewVar()
 	t.OutputStreams().Setup(t, output, 0)
 	return output
@@ -261,7 +261,7 @@ func (b *GraphNodeBuilder) NewGetValue(from exec.WorkerInfo) *GetValueNode {
 
 func (t *GetValueNode) Get(v *dag.Var) *dag.Var {
 	t.InputValues().EnsureSize(1)
-	v.Connect(t, 0)
+	v.ValueTo(t, 0)
 	output := t.Graph().NewVar()
 	t.OutputValues().Setup(t, output, 1)
 	return output
diff --git a/pkgs/ioswitch/plan/ops/store.go b/pkgs/ioswitch/plan/ops/store.go
index f51bbe4..f2a7f74 100644
--- a/pkgs/ioswitch/plan/ops/store.go
+++ b/pkgs/ioswitch/plan/ops/store.go
@@ -40,7 +40,7 @@ func (b *GraphNodeBuilder) NewStore() *StoreNode {
 func (t *StoreNode) Store(key string, v *dag.Var) {
 	t.Key = key
 	t.InputValues().EnsureSize(1)
-	v.Connect(t, 0)
+	v.ValueTo(t, 0)
 }
 
 func (t *StoreNode) GenerateOp() (exec.Op, error) {
diff --git a/pkgs/ioswitch/plan/ops/sync.go b/pkgs/ioswitch/plan/ops/sync.go
index d9ac791..b4437f1 100644
--- a/pkgs/ioswitch/plan/ops/sync.go
+++ b/pkgs/ioswitch/plan/ops/sync.go
@@ -170,18 +170,18 @@ func (b *GraphNodeBuilder) NewHoldUntil() *HoldUntilNode {
 
 func (t *HoldUntilNode) SetSignal(s *dag.Var) {
 	t.InputValues().EnsureSize(1)
-	s.Connect(t, 0)
+	s.ValueTo(t, 0)
 }
 
 func (t *HoldUntilNode) HoldStream(str *dag.Var) *dag.Var {
-	str.Connect(t, t.InputStreams().EnlargeOne())
+	str.StreamTo(t, t.InputStreams().EnlargeOne())
 	output := t.Graph().NewVar()
 	t.OutputStreams().SetupNew(t, output)
 	return output
 }
 
 func (t *HoldUntilNode) HoldVar(v *dag.Var) *dag.Var {
-	v.Connect(t, t.InputValues().EnlargeOne())
+	v.ValueTo(t, t.InputValues().EnlargeOne())
 	output := t.Graph().NewVar()
 	t.OutputValues().SetupNew(t, output)
 	return output
diff --git a/sdks/storage/shard_storage.go b/sdks/storage/shard_storage.go
index c5e6670..1c5dab0 100644
--- a/sdks/storage/shard_storage.go
+++ b/sdks/storage/shard_storage.go
@@ -20,8 +20,6 @@ var _ = serder.UseTypeUnionInternallyTagged(types.Ref(types.NewTypeUnion[ShardSt
 
 type ShardStorage struct {
 	StorageID StorageID `json:"storageID" gorm:"column:StorageID; primaryKey; type:bigint"`
-	// Shard存储空间在存储服务的目录
-	Root string `json:"root" gorm:"column:Root; type:varchar(1024); not null"`
 	// ShardStore配置数据
 	Config ShardStoreConfig `json:"config" gorm:"column:Config; type:json; not null; serializer:union"`
 }
@@ -32,6 +30,7 @@ func (ShardStorage) TableName() string {
 
 type LocalShardStorage struct {
 	serder.Metadata `union:"Local"`
+	Type            string `json:"type"`
 	Root            string `json:"root"`
 	MaxSize         int64  `json:"maxSize"`
 }
diff --git a/sdks/storage/storage.go b/sdks/storage/storage.go
index da0180e..0477b4f 100644
--- a/sdks/storage/storage.go
+++ b/sdks/storage/storage.go
@@ -20,6 +20,7 @@ var _ = serder.UseTypeUnionInternallyTagged(types.Ref(types.NewTypeUnion[Storage
 
 type LocalStorageAddress struct {
 	serder.Metadata `union:"Local"`
+	Type            string `json:"type"`
 }
 
 func (a *LocalStorageAddress) GetType() string {
diff --git a/sdks/storage/storage_feature.go b/sdks/storage/storage_feature.go
index b5787df..a401500 100644
--- a/sdks/storage/storage_feature.go
+++ b/sdks/storage/storage_feature.go
@@ -20,6 +20,7 @@ var _ = serder.UseTypeUnionInternallyTagged(types.Ref(types.NewTypeUnion[Storage
 // 存储服务支持被非MasterHub直接上传文件
 type BypassUploadFeature struct {
 	serder.Metadata `union:"BypassUpload"`
+	Type            string `json:"type"`
 	// 存放上传文件的临时目录
 	TempRoot string `json:"tempRoot"`
 }
@@ -35,6 +36,7 @@ func (f *BypassUploadFeature) String() string {
 // 存储服务支持分段上传
 type MultipartUploadFeature struct {
 	serder.Metadata `union:"MultipartUpload"`
+	Type            string `json:"type"`
 }
 
 func (f *MultipartUploadFeature) GetType() string {