diff --git a/common/pkgs/downloader/iterator.go b/common/pkgs/downloader/iterator.go
index c4f59e3..43b9e21 100644
--- a/common/pkgs/downloader/iterator.go
+++ b/common/pkgs/downloader/iterator.go
@@ -387,7 +387,7 @@ func (iter *DownloadObjectIterator) downloadFromStorage(stg *stgmod.StorageDetai
 	var strHandle *exec.DriverReadStream
 	ft := ioswitch2.NewFromTo()
 
-	toExec, handle := ioswitch2.NewToDriver(-1)
+	toExec, handle := ioswitch2.NewToDriver(ioswitch2.RawStream())
 	toExec.Range = exec.Range{
 		Offset: req.Raw.Offset,
 	}
@@ -396,7 +396,7 @@ func (iter *DownloadObjectIterator) downloadFromStorage(stg *stgmod.StorageDetai
 		toExec.Range.Length = &len
 	}
 
-	ft.AddFrom(ioswitch2.NewFromShardstore(req.Detail.Object.FileHash, *stg.MasterHub, stg.Storage, -1)).AddTo(toExec)
+	ft.AddFrom(ioswitch2.NewFromShardstore(req.Detail.Object.FileHash, *stg.MasterHub, stg.Storage, ioswitch2.RawStream())).AddTo(toExec)
 	strHandle = handle
 
 	plans := exec.NewPlanBuilder()
diff --git a/common/pkgs/downloader/strip_iterator.go b/common/pkgs/downloader/strip_iterator.go
index da06dcc..a08c1d2 100644
--- a/common/pkgs/downloader/strip_iterator.go
+++ b/common/pkgs/downloader/strip_iterator.go
@@ -201,10 +201,10 @@ func (s *StripIterator) readStrip(stripIndex int64, buf []byte) (int, error) {
 		ft := ioswitch2.NewFromTo()
 		for _, b := range s.blocks {
 			stg := b.Storage
-			ft.AddFrom(ioswitch2.NewFromShardstore(b.Block.FileHash, *stg.MasterHub, stg.Storage, b.Block.Index))
+			ft.AddFrom(ioswitch2.NewFromShardstore(b.Block.FileHash, *stg.MasterHub, stg.Storage, ioswitch2.ECSrteam(b.Block.Index)))
 		}
 
-		toExec, hd := ioswitch2.NewToDriverWithRange(-1, exec.Range{
+		toExec, hd := ioswitch2.NewToDriverWithRange(ioswitch2.RawStream(), exec.Range{
 			Offset: stripIndex * s.red.StripSize(),
 		})
 		ft.AddTo(toExec)
diff --git a/common/pkgs/ioswitch2/fromto.go b/common/pkgs/ioswitch2/fromto.go
index 4993640..679164c 100644
--- a/common/pkgs/ioswitch2/fromto.go
+++ b/common/pkgs/ioswitch2/fromto.go
@@ -6,7 +6,7 @@ import (
 )
 
 type From interface {
-	GetDataIndex() int
+	GetStreamType() StreamType
 }
 
 type To interface {
@@ -14,7 +14,53 @@ type To interface {
 	// 如果DataIndex == -1，则表示在整个文件的范围。
 	// 如果DataIndex >= 0，则表示在文件的某个分片的范围。
 	GetRange() exec.Range
-	GetDataIndex() int
+	GetStreamType() StreamType
+}
+
+const (
+	// 未处理的完整文件流
+	StreamTypeRaw = iota
+	// EC编码的某一块的流
+	StreamTypeEC
+	// 分段编码的某一段的流
+	StreamTypeSegment
+)
+
+type StreamType struct {
+	Type  int
+	Index int
+}
+
+func RawStream() StreamType {
+	return StreamType{
+		Type: StreamTypeRaw,
+	}
+}
+
+func ECSrteam(index int) StreamType {
+	return StreamType{
+		Type:  StreamTypeEC,
+		Index: index,
+	}
+}
+
+func SegmentStream(index int) StreamType {
+	return StreamType{
+		Type:  StreamTypeSegment,
+		Index: index,
+	}
+}
+
+func (s StreamType) IsRaw() bool {
+	return s.Type == StreamTypeRaw
+}
+
+func (s StreamType) IsEC() bool {
+	return s.Type == StreamTypeEC
+}
+
+func (s StreamType) IsSegment() bool {
+	return s.Type == StreamTypeSegment
 }
 
 type FromTos []FromTo
@@ -39,69 +85,69 @@ func (ft *FromTo) AddTo(to To) *FromTo {
 }
 
 type FromDriver struct {
-	Handle    *exec.DriverWriteStream
-	DataIndex int
+	Handle     *exec.DriverWriteStream
+	StreamType StreamType
 }
 
-func NewFromDriver(dataIndex int) (*FromDriver, *exec.DriverWriteStream) {
+func NewFromDriver(strType StreamType) (*FromDriver, *exec.DriverWriteStream) {
 	handle := &exec.DriverWriteStream{
 		RangeHint: &exec.Range{},
 	}
 	return &FromDriver{
-		Handle:    handle,
-		DataIndex: dataIndex,
+		Handle:     handle,
+		StreamType: strType,
 	}, handle
 }
 
-func (f *FromDriver) GetDataIndex() int {
-	return f.DataIndex
+func (f *FromDriver) GetStreamType() StreamType {
+	return f.StreamType
 }
 
 type FromShardstore struct {
-	FileHash  cdssdk.FileHash
-	Hub       cdssdk.Hub
-	Storage   cdssdk.Storage
-	DataIndex int
+	FileHash   cdssdk.FileHash
+	Hub        cdssdk.Hub
+	Storage    cdssdk.Storage
+	StreamType StreamType
 }
 
-func NewFromShardstore(fileHash cdssdk.FileHash, hub cdssdk.Hub, storage cdssdk.Storage, dataIndex int) *FromShardstore {
+func NewFromShardstore(fileHash cdssdk.FileHash, hub cdssdk.Hub, storage cdssdk.Storage, strType StreamType) *FromShardstore {
 	return &FromShardstore{
-		FileHash:  fileHash,
-		Hub:       hub,
-		Storage:   storage,
-		DataIndex: dataIndex,
+		FileHash:   fileHash,
+		Hub:        hub,
+		Storage:    storage,
+		StreamType: strType,
 	}
 }
 
-func (f *FromShardstore) GetDataIndex() int {
-	return f.DataIndex
+func (f *FromShardstore) GetStreamType() StreamType {
+	return f.StreamType
 }
 
 type ToDriver struct {
-	Handle    *exec.DriverReadStream
-	DataIndex int
-	Range     exec.Range
+	Handle     *exec.DriverReadStream
+	StreamType StreamType
+	Range      exec.Range
 }
 
-func NewToDriver(dataIndex int) (*ToDriver, *exec.DriverReadStream) {
+func NewToDriver(strType StreamType) (*ToDriver, *exec.DriverReadStream) {
 	str := exec.DriverReadStream{}
 	return &ToDriver{
-		Handle:    &str,
-		DataIndex: dataIndex,
+		Handle:     &str,
+		StreamType: strType,
 	}, &str
 }
 
-func NewToDriverWithRange(dataIndex int, rng exec.Range) (*ToDriver, *exec.DriverReadStream) {
+func NewToDriverWithRange(strType StreamType, rng exec.Range) (*ToDriver, *exec.DriverReadStream) {
 	str := exec.DriverReadStream{}
 	return &ToDriver{
-		Handle:    &str,
-		DataIndex: dataIndex,
-		Range:     rng,
+		Handle:     &str,
+		StreamType: strType,
+		Range:      rng,
 	}, &str
 }
 
-func (t *ToDriver) GetDataIndex() int {
-	return t.DataIndex
+func (t *ToDriver) GetStreamType() StreamType {
+	return t.StreamType
 }
 
 func (t *ToDriver) GetRange() exec.Range {
@@ -111,32 +157,32 @@ func (t *ToDriver) GetRange() exec.Range {
 type ToShardStore struct {
 	Hub              cdssdk.Hub
 	Storage          cdssdk.Storage
-	DataIndex        int
+	StreamType       StreamType
 	Range            exec.Range
 	FileHashStoreKey string
 }
 
-func NewToShardStore(hub cdssdk.Hub, stg cdssdk.Storage, dataIndex int, fileHashStoreKey string) *ToShardStore {
+func NewToShardStore(hub cdssdk.Hub, stg cdssdk.Storage, strType StreamType, fileHashStoreKey string) *ToShardStore {
 	return &ToShardStore{
 		Hub:              hub,
 		Storage:          stg,
-		DataIndex:        dataIndex,
+		StreamType:       strType,
 		FileHashStoreKey: fileHashStoreKey,
 	}
 }
 
-func NewToShardStoreWithRange(hub cdssdk.Hub, stg cdssdk.Storage, dataIndex int, fileHashStoreKey string, rng exec.Range) *ToShardStore {
+func NewToShardStoreWithRange(hub cdssdk.Hub, stg cdssdk.Storage, streamType StreamType, fileHashStoreKey string, rng exec.Range) *ToShardStore {
 	return &ToShardStore{
 		Hub:              hub,
 		Storage:          stg,
-		DataIndex:        dataIndex,
+		StreamType:       streamType,
 		FileHashStoreKey: fileHashStoreKey,
 		Range:            rng,
 	}
 }
 
-func (t *ToShardStore) GetDataIndex() int {
-	return t.DataIndex
+func (t *ToShardStore) GetStreamType() StreamType {
+	return t.StreamType
 }
 
 func (t *ToShardStore) GetRange() exec.Range {
@@ -161,8 +207,10 @@ func NewLoadToShared(hub cdssdk.Hub, storage cdssdk.Storage, userID cdssdk.UserI
 	}
 }
 
-func (t *LoadToShared) GetDataIndex() int {
-	return -1
+func (t *LoadToShared) GetStreamType() StreamType {
+	return StreamType{
+		Type: StreamTypeRaw,
+	}
 }
 
 func (t *LoadToShared) GetRange() exec.Range {
diff --git a/common/pkgs/ioswitch2/ops2/segment.go b/common/pkgs/ioswitch2/ops2/segment.go
new file mode 100644
index 0000000..b1b3347
--- /dev/null
+++ b/common/pkgs/ioswitch2/ops2/segment.go
@@ -0,0 +1 @@
+package ops2
diff --git a/common/pkgs/ioswitch2/parser/parser.go b/common/pkgs/ioswitch2/parser/parser.go
index 0d312fb..f4d4dfd 100644
--- a/common/pkgs/ioswitch2/parser/parser.go
+++ b/common/pkgs/ioswitch2/parser/parser.go
@@ -15,9 +15,9 @@ import (
 	"gitlink.org.cn/cloudream/storage/common/pkgs/storage/types"
 )
 
-type IndexedStream struct {
-	Stream    *dag.Var
-	DataIndex int
+type TypedStream struct {
+	Stream     *dag.Var
+	StreamType ioswitch2.StreamType
 }
 
 type ParseContext struct {
@@ -25,10 +25,10 @@ type ParseContext struct {
 	DAG *ops2.GraphNodeBuilder
 	// 为了产生所有To所需的数据范围，而需要From打开的范围。
 	// 这个范围是基于整个文件的，且上下界都取整到条带大小的整数倍，因此上界是有可能超过文件大小的。
-	ToNodes        map[ioswitch2.To]ops2.ToNode
-	IndexedStreams []IndexedStream
-	StreamRange    exec.Range
-	EC             cdssdk.ECRedundancy
+	ToNodes      map[ioswitch2.To]ops2.ToNode
+	TypedStreams []TypedStream
+	StreamRange  exec.Range
+	EC           cdssdk.ECRedundancy
 }
 
 func Parse(ft ioswitch2.FromTo, blder *exec.PlanBuilder, ec cdssdk.ECRedundancy) error {
@@ -86,10 +86,10 @@ func Parse(ft ioswitch2.FromTo, blder *exec.PlanBuilder, ec cdssdk.ECRedundancy)
 
 	return plan.Generate(ctx.DAG.Graph, blder)
 }
-func findOutputStream(ctx *ParseContext, streamIndex int) *dag.Var {
+func findOutputStream(ctx *ParseContext, streamType ioswitch2.StreamType) *dag.Var {
 	var ret *dag.Var
-	for _, s := range ctx.IndexedStreams {
-		if s.DataIndex == streamIndex {
+	for _, s := range ctx.TypedStreams {
+		if s.StreamType == streamType {
 			ret = s.Stream
 			break
 		}
@@ -106,7 +106,7 @@ func calcStreamRange(ctx *ParseContext) {
 	}
 
 	for _, to := range ctx.Ft.Toes {
-		if to.GetDataIndex() == -1 {
+		if to.GetStreamType().IsRaw() {
 			toRng := to.GetRange()
 			rng.ExtendStart(math2.Floor(toRng.Offset, stripSize))
 			if toRng.Length != nil {
@@ -139,19 +139,19 @@ func extend(ctx *ParseContext) error {
 			return err
 		}
 
-		ctx.IndexedStreams = append(ctx.IndexedStreams, IndexedStream{
-			Stream:    frNode.Output().Var,
-			DataIndex: fr.GetDataIndex(),
+		ctx.TypedStreams = append(ctx.TypedStreams, TypedStream{
+			Stream:     frNode.Output().Var,
+			StreamType: fr.GetStreamType(),
 		})
 
 		// 对于完整文件的From，生成Split指令
-		if fr.GetDataIndex() == -1 {
+		if fr.GetStreamType().IsRaw() {
 			splitNode := ctx.DAG.NewChunkedSplit(ctx.EC.ChunkSize)
 			splitNode.Split(frNode.Output().Var, ctx.EC.K)
 			for i := 0; i < ctx.EC.K; i++ {
-				ctx.IndexedStreams = append(ctx.IndexedStreams, IndexedStream{
-					Stream:    splitNode.SubStream(i),
-					DataIndex: i,
+				ctx.TypedStreams = append(ctx.TypedStreams, TypedStream{
+					Stream:     splitNode.SubStream(i),
+					StreamType: ioswitch2.ECSrteam(i),
 				})
 			}
 		}
@@ -159,9 +159,9 @@ func extend(ctx *ParseContext) error {
 
 	// 如果有K个不同的文件块流，则生成Multiply指令，同时针对其生成的流，生成Join指令
 	ecInputStrs := make(map[int]*dag.Var)
-	for _, s := range ctx.IndexedStreams {
-		if s.DataIndex >= 0 && ecInputStrs[s.DataIndex] == nil {
-			ecInputStrs[s.DataIndex] = s.Stream
+	for _, s := range ctx.TypedStreams {
+		if s.StreamType.IsEC() && ecInputStrs[s.StreamType.Index] == nil {
+			ecInputStrs[s.StreamType.Index] = s.Stream
 			if len(ecInputStrs) == ctx.EC.K {
 				break
 			}
@@ -175,20 +175,20 @@ func extend(ctx *ParseContext) error {
 			mulNode.AddInput(s, i)
 		}
 		for i := 0; i < ctx.EC.N; i++ {
-			ctx.IndexedStreams = append(ctx.IndexedStreams, IndexedStream{
-				Stream:    mulNode.NewOutput(i),
-				DataIndex: i,
+			ctx.TypedStreams = append(ctx.TypedStreams, TypedStream{
+				Stream:     mulNode.NewOutput(i),
+				StreamType: ioswitch2.ECSrteam(i),
 			})
 		}
 
 		joinNode := ctx.DAG.NewChunkedJoin(ctx.EC.ChunkSize)
 		for i := 0; i < ctx.EC.K; i++ {
 			// 不可能找不到流
-			joinNode.AddInput(findOutputStream(ctx, i))
+			joinNode.AddInput(findOutputStream(ctx, ioswitch2.ECSrteam(i)))
 		}
-		ctx.IndexedStreams = append(ctx.IndexedStreams, IndexedStream{
-			Stream:    joinNode.Joined(),
-			DataIndex: -1,
+		ctx.TypedStreams = append(ctx.TypedStreams, TypedStream{
+			Stream:     joinNode.Joined(),
+			StreamType: ioswitch2.RawStream(),
 		})
 	}
 
@@ -200,9 +200,9 @@ func extend(ctx *ParseContext) error {
 		}
 		ctx.ToNodes[to] = toNode
 
-		str := findOutputStream(ctx, to.GetDataIndex())
+		str := findOutputStream(ctx, to.GetStreamType())
 		if str == nil {
-			return fmt.Errorf("no output stream found for data index %d", to.GetDataIndex())
+			return fmt.Errorf("no output stream found for data index %d", to.GetStreamType())
 		}
 
 		toNode.SetInput(str)
@@ -229,7 +229,7 @@ func buildFromNode(ctx *ParseContext, f ioswitch2.From) (ops2.FromNode, error) {
 	case *ioswitch2.FromShardstore:
 		t := ctx.DAG.NewShardRead(f.Storage.StorageID, types.NewOpen(f.FileHash))
 
-		if f.DataIndex == -1 {
+		if f.StreamType.IsRaw() {
 			t.Open.WithNullableLength(repRange.Offset, repRange.Length)
 		} else {
 			t.Open.WithNullableLength(blkRange.Offset, blkRange.Length)
@@ -255,7 +255,7 @@ func buildFromNode(ctx *ParseContext, f ioswitch2.From) (ops2.FromNode, error) {
 		n.Env().ToEnvDriver()
 		n.Env().Pinned = true
 
-		if f.DataIndex == -1 {
+		if f.StreamType.IsRaw() {
 			f.Handle.RangeHint.Offset = repRange.Offset
 			f.Handle.RangeHint.Length = repRange.Length
 		} else {
@@ -539,10 +539,10 @@ func generateRange(ctx *ParseContext) {
 		to := ctx.Ft.Toes[i]
 		toNode := ctx.ToNodes[to]
 
-		toDataIdx := to.GetDataIndex()
+		toStrType := to.GetStreamType()
 		toRng := to.GetRange()
 
-		if toDataIdx == -1 {
+		if toStrType.IsRaw() {
 			n := ctx.DAG.NewRange()
 			toInput := toNode.Input()
 			*n.Env() = *toInput.Var.From().Node.Env()
diff --git a/common/pkgs/uploader/create_load.go b/common/pkgs/uploader/create_load.go
index 1605a2e..8babde9 100644
--- a/common/pkgs/uploader/create_load.go
+++ b/common/pkgs/uploader/create_load.go
@@ -40,10 +40,10 @@ func (u *CreateLoadUploader) Upload(path string, size int64, stream io.Reader) e
 	uploadTime := time.Now()
 
 	ft := ioswitch2.NewFromTo()
-	fromExec, hd := ioswitch2.NewFromDriver(-1)
+	fromExec, hd := ioswitch2.NewFromDriver(ioswitch2.RawStream())
 	ft.AddFrom(fromExec)
 	for _, stg := range u.targetStgs {
-		ft.AddTo(ioswitch2.NewToShardStore(*stg.MasterHub, stg.Storage, -1, "fileHash"))
+		ft.AddTo(ioswitch2.NewToShardStore(*stg.MasterHub, stg.Storage, ioswitch2.RawStream(), "fileHash"))
 		ft.AddTo(ioswitch2.NewLoadToShared(*stg.MasterHub, stg.Storage, u.userID, u.pkg.PackageID, path))
 	}
 
diff --git a/common/pkgs/uploader/update.go b/common/pkgs/uploader/update.go
index aed711b..3b2ac0b 100644
--- a/common/pkgs/uploader/update.go
+++ b/common/pkgs/uploader/update.go
@@ -43,8 +43,8 @@ func (w *UpdateUploader) Upload(path string, size int64, stream io.Reader) error
 	uploadTime := time.Now()
 
 	ft := ioswitch2.NewFromTo()
-	fromExec, hd := ioswitch2.NewFromDriver(-1)
-	ft.AddFrom(fromExec).AddTo(ioswitch2.NewToShardStore(*w.targetStg.MasterHub, w.targetStg.Storage, -1, "fileHash"))
+	fromExec, hd := ioswitch2.NewFromDriver(ioswitch2.RawStream())
+	ft.AddFrom(fromExec).AddTo(ioswitch2.NewToShardStore(*w.targetStg.MasterHub, w.targetStg.Storage, ioswitch2.RawStream(), "fileHash"))
 
 	plans := exec.NewPlanBuilder()
 	err := parser.Parse(ft, plans, cdssdk.DefaultECRedundancy)
diff --git a/scanner/internal/event/check_package_redundancy.go b/scanner/internal/event/check_package_redundancy.go
index 337cf9c..006fc42 100644
--- a/scanner/internal/event/check_package_redundancy.go
+++ b/scanner/internal/event/check_package_redundancy.go
@@ -447,9 +447,9 @@ func (t *CheckPackageRedundancy) noneToRep(ctx ExecuteContext, obj stgmod.Object
 	uploadStgs = lo.UniqBy(uploadStgs, func(item *StorageLoadInfo) cdssdk.StorageID { return item.Storage.Storage.StorageID })
 
 	ft := ioswitch2.NewFromTo()
-	ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *getStgs.Storages[0].MasterHub, getStgs.Storages[0].Storage, -1))
+	ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *getStgs.Storages[0].MasterHub, getStgs.Storages[0].Storage, ioswitch2.RawStream()))
 	for i, stg := range uploadStgs {
-		ft.AddTo(ioswitch2.NewToShardStore(*stg.Storage.MasterHub, stg.Storage.Storage, -1, fmt.Sprintf("%d", i)))
+		ft.AddTo(ioswitch2.NewToShardStore(*stg.Storage.MasterHub, stg.Storage.Storage, ioswitch2.RawStream(), fmt.Sprintf("%d", i)))
 	}
 
 	plans := exec.NewPlanBuilder()
@@ -506,9 +506,9 @@ func (t *CheckPackageRedundancy) noneToEC(ctx ExecuteContext, obj stgmod.ObjectD
 	}
 
 	ft := ioswitch2.NewFromTo()
-	ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *getStgs.Storages[0].MasterHub, getStgs.Storages[0].Storage, -1))
+	ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *getStgs.Storages[0].MasterHub, getStgs.Storages[0].Storage, ioswitch2.RawStream()))
 	for i := 0; i < red.N; i++ {
-		ft.AddTo(ioswitch2.NewToShardStore(*uploadStgs[i].Storage.MasterHub, uploadStgs[i].Storage.Storage, i, fmt.Sprintf("%d", i)))
+		ft.AddTo(ioswitch2.NewToShardStore(*uploadStgs[i].Storage.MasterHub, uploadStgs[i].Storage.Storage, ioswitch2.ECSrteam(i), fmt.Sprintf("%d", i)))
 	}
 	plans := exec.NewPlanBuilder()
 	err = parser.Parse(ft, plans, *red)
@@ -623,9 +623,9 @@ func (t *CheckPackageRedundancy) repToRep(ctx ExecuteContext, obj stgmod.ObjectD
 	uploadStgs = lo.UniqBy(uploadStgs, func(item *StorageLoadInfo) cdssdk.StorageID { return item.Storage.Storage.StorageID })
 
 	ft := ioswitch2.NewFromTo()
-	ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *getStgs.Storages[0].MasterHub, getStgs.Storages[0].Storage, -1))
+	ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *getStgs.Storages[0].MasterHub, getStgs.Storages[0].Storage, ioswitch2.RawStream()))
 	for i, stg := range uploadStgs {
-		ft.AddTo(ioswitch2.NewToShardStore(*stg.Storage.MasterHub, stg.Storage.Storage, -1, fmt.Sprintf("%d", i)))
+		ft.AddTo(ioswitch2.NewToShardStore(*stg.Storage.MasterHub, stg.Storage.Storage, ioswitch2.RawStream(), fmt.Sprintf("%d", i)))
 	}
 
 	plans := exec.NewPlanBuilder()
@@ -696,11 +696,11 @@ func (t *CheckPackageRedundancy) ecToRep(ctx ExecuteContext, obj stgmod.ObjectDe
 		ft := ioswitch2.NewFromTo()
 
 		for _, block := range chosenBlocks {
-			ft.AddFrom(ioswitch2.NewFromShardstore(block.FileHash, *uploadStgs[i].Storage.MasterHub, uploadStgs[i].Storage.Storage, block.Index))
+			ft.AddFrom(ioswitch2.NewFromShardstore(block.FileHash, *uploadStgs[i].Storage.MasterHub, uploadStgs[i].Storage.Storage, ioswitch2.ECSrteam(block.Index)))
 		}
 
 		len := obj.Object.Size
-		ft.AddTo(ioswitch2.NewToShardStoreWithRange(*uploadStgs[i].Storage.MasterHub, uploadStgs[i].Storage.Storage, -1, fmt.Sprintf("%d", i), exec.Range{
+		ft.AddTo(ioswitch2.NewToShardStoreWithRange(*uploadStgs[i].Storage.MasterHub, uploadStgs[i].Storage.Storage, ioswitch2.RawStream(), fmt.Sprintf("%d", i), exec.Range{
 			Offset: 0,
 			Length: &len,
 		}))
@@ -788,11 +788,11 @@ func (t *CheckPackageRedundancy) ecToEC(ctx ExecuteContext, obj stgmod.ObjectDet
 		ft := ioswitch2.NewFromTo()
 		for _, block := range chosenBlocks {
 			stg := stg.Storage
-			ft.AddFrom(ioswitch2.NewFromShardstore(block.FileHash, *stg.MasterHub, stg.Storage, block.Index))
+			ft.AddFrom(ioswitch2.NewFromShardstore(block.FileHash, *stg.MasterHub, stg.Storage, ioswitch2.ECSrteam(block.Index)))
 		}
 
 		// 输出只需要自己要保存的那一块
-		ft.AddTo(ioswitch2.NewToShardStore(*stg.Storage.MasterHub, stg.Storage.Storage, i, fmt.Sprintf("%d", i)))
+		ft.AddTo(ioswitch2.NewToShardStore(*stg.Storage.MasterHub, stg.Storage.Storage, ioswitch2.ECSrteam(i), fmt.Sprintf("%d", i)))
 
 		err := parser.Parse(ft, planBlder, *srcRed)
 		if err != nil {
diff --git a/scanner/internal/event/clean_pinned.go b/scanner/internal/event/clean_pinned.go
index 91ed3b0..6214560 100644
--- a/scanner/internal/event/clean_pinned.go
+++ b/scanner/internal/event/clean_pinned.go
@@ -741,9 +741,9 @@ func (t *CleanPinned) makePlansForRepObject(allStgInfos map[cdssdk.StorageID]*st
 				ft := ioswitch2.NewFromTo()
 
 				fromStg := allStgInfos[obj.Blocks[0].StorageID]
-				ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *fromStg.MasterHub, fromStg.Storage, -1))
+				ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *fromStg.MasterHub, fromStg.Storage, ioswitch2.RawStream()))
 				toStg := allStgInfos[solu.blockList[i].StorageID]
-				ft.AddTo(ioswitch2.NewToShardStore(*toStg.MasterHub, toStg.Storage, -1, fmt.Sprintf("%d.0", obj.Object.ObjectID)))
+				ft.AddTo(ioswitch2.NewToShardStore(*toStg.MasterHub, toStg.Storage, ioswitch2.RawStream(), fmt.Sprintf("%d.0", obj.Object.ObjectID)))
 
 				err := parser.Parse(ft, planBld, cdssdk.DefaultECRedundancy)
 				if err != nil {
@@ -798,10 +798,10 @@ func (t *CleanPinned) makePlansForECObject(allStgInfos map[cdssdk.StorageID]*stg
 
 	for id, idxs := range reconstrct {
 		ft := ioswitch2.NewFromTo()
-		ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *allStgInfos[id].MasterHub, allStgInfos[id].Storage, -1))
+		ft.AddFrom(ioswitch2.NewFromShardstore(obj.Object.FileHash, *allStgInfos[id].MasterHub, allStgInfos[id].Storage, ioswitch2.RawStream()))
 
 		for _, i := range *idxs {
-			ft.AddTo(ioswitch2.NewToShardStore(*allStgInfos[id].MasterHub, allStgInfos[id].Storage, i, fmt.Sprintf("%d.%d", obj.Object.ObjectID, i)))
+			ft.AddTo(ioswitch2.NewToShardStore(*allStgInfos[id].MasterHub, allStgInfos[id].Storage, ioswitch2.ECSrteam(i), fmt.Sprintf("%d.%d", obj.Object.ObjectID, i)))
 		}
 
 		err := parser.Parse(ft, planBld, *ecRed)