diff --git a/common/models/models.go b/common/models/models.go
index f3f56bb..2538a5d 100644
--- a/common/models/models.go
+++ b/common/models/models.go
@@ -3,6 +3,7 @@ package stgmod
 import (
 	"github.com/samber/lo"
 	cdssdk "gitlink.org.cn/cloudream/common/sdks/storage"
+	"gitlink.org.cn/cloudream/common/utils/sort2"
 )
 
 type ObjectBlock struct {
@@ -48,7 +49,7 @@ func (o *ObjectDetail) GroupBlocks() []GrouppedObjectBlock {
 		grps[block.Index] = grp
 	}
 
-	return lo.Values(grps)
+	return sort2.Sort(lo.Values(grps), func(l, r GrouppedObjectBlock) int { return l.Index - r.Index })
 }
 
 type LocalMachineInfo struct {
diff --git a/common/pkgs/ioswitch2/agent_worker.go b/common/pkgs/ioswitch2/agent_worker.go
index 61793ae..cdca6d9 100644
--- a/common/pkgs/ioswitch2/agent_worker.go
+++ b/common/pkgs/ioswitch2/agent_worker.go
@@ -5,11 +5,17 @@ import (
 	"io"
 
 	"gitlink.org.cn/cloudream/common/pkgs/ioswitch/exec"
+	"gitlink.org.cn/cloudream/common/pkgs/types"
 	cdssdk "gitlink.org.cn/cloudream/common/sdks/storage"
+	"gitlink.org.cn/cloudream/common/utils/serder"
 	stgglb "gitlink.org.cn/cloudream/storage/common/globals"
 	agtrpc "gitlink.org.cn/cloudream/storage/common/pkgs/grpc/agent"
 )
 
+var _ = serder.UseTypeUnionExternallyTagged(types.Ref(types.NewTypeUnion[exec.WorkerInfo](
+	(*AgentWorker)(nil),
+)))
+
 type AgentWorker struct {
 	Node cdssdk.Node
 }
diff --git a/common/pkgs/ioswitch2/ops2/chunked.go b/common/pkgs/ioswitch2/ops2/chunked.go
index f9d7b0a..3533a55 100644
--- a/common/pkgs/ioswitch2/ops2/chunked.go
+++ b/common/pkgs/ioswitch2/ops2/chunked.go
@@ -89,7 +89,9 @@ type ChunkedSplitType struct {
 func (t *ChunkedSplitType) InitNode(node *dag.Node) {
 	dag.NodeDeclareInputStream(node, 1)
 	for i := 0; i < t.OutputCount; i++ {
-		dag.NodeNewOutputStream(node, &ioswitch2.VarProps{})
+		dag.NodeNewOutputStream(node, &ioswitch2.VarProps{
+			StreamIndex: i,
+		})
 	}
 }
 
diff --git a/common/pkgs/ioswitch2/ops2/clone.go b/common/pkgs/ioswitch2/ops2/clone.go
index d53e29b..d577b53 100644
--- a/common/pkgs/ioswitch2/ops2/clone.go
+++ b/common/pkgs/ioswitch2/ops2/clone.go
@@ -104,7 +104,7 @@ func (t *CloneVarType) GenerateOp(op *dag.Node) (exec.Op, error) {
 }
 
 func (t *CloneVarType) NewOutput(node *dag.Node) *dag.ValueVar {
-	return dag.NodeNewOutputValue(node, nil)
+	return dag.NodeNewOutputValue(node, node.InputValues[0].Type, nil)
 }
 
 func (t *CloneVarType) String(node *dag.Node) string {
diff --git a/common/pkgs/ioswitch2/ops2/ec.go b/common/pkgs/ioswitch2/ops2/ec.go
index 76e6c22..192d79d 100644
--- a/common/pkgs/ioswitch2/ops2/ec.go
+++ b/common/pkgs/ioswitch2/ops2/ec.go
@@ -195,26 +195,19 @@ func (o *ECMultiply) Execute(ctx context.Context, e *exec.Executor) error {
 }
 
 type MultiplyType struct {
-	EC cdssdk.ECRedundancy
+	EC            cdssdk.ECRedundancy
+	InputIndexes  []int
+	OutputIndexes []int
 }
 
 func (t *MultiplyType) InitNode(node *dag.Node) {}
 
 func (t *MultiplyType) GenerateOp(op *dag.Node) (exec.Op, error) {
-	var inputIdxs []int
-	var outputIdxs []int
-	for _, in := range op.InputStreams {
-		inputIdxs = append(inputIdxs, ioswitch2.SProps(in).StreamIndex)
-	}
-	for _, out := range op.OutputStreams {
-		outputIdxs = append(outputIdxs, ioswitch2.SProps(out).StreamIndex)
-	}
-
 	rs, err := ec.NewRs(t.EC.K, t.EC.N)
 	if err != nil {
 		return nil, err
 	}
-	coef, err := rs.GenerateMatrix(inputIdxs, outputIdxs)
+	coef, err := rs.GenerateMatrix(t.InputIndexes, t.OutputIndexes)
 	if err != nil {
 		return nil, err
 	}
@@ -227,12 +220,14 @@ func (t *MultiplyType) GenerateOp(op *dag.Node) (exec.Op, error) {
 	}, nil
 }
 
-func (t *MultiplyType) AddInput(node *dag.Node, str *dag.StreamVar) {
+func (t *MultiplyType) AddInput(node *dag.Node, str *dag.StreamVar, dataIndex int) {
+	t.InputIndexes = append(t.InputIndexes, dataIndex)
 	node.InputStreams = append(node.InputStreams, str)
 	str.To(node, len(node.InputStreams)-1)
 }
 
 func (t *MultiplyType) NewOutput(node *dag.Node, dataIndex int) *dag.StreamVar {
+	t.OutputIndexes = append(t.OutputIndexes, dataIndex)
 	return dag.NodeNewOutputStream(node, &ioswitch2.VarProps{StreamIndex: dataIndex})
 }
 
diff --git a/common/pkgs/ioswitch2/ops2/ipfs.go b/common/pkgs/ioswitch2/ops2/ipfs.go
index fa02b6d..303157a 100644
--- a/common/pkgs/ioswitch2/ops2/ipfs.go
+++ b/common/pkgs/ioswitch2/ops2/ipfs.go
@@ -114,7 +114,7 @@ type IPFSWriteType struct {
 
 func (t *IPFSWriteType) InitNode(node *dag.Node) {
 	dag.NodeDeclareInputStream(node, 1)
-	dag.NodeNewOutputValue(node, &ioswitch2.VarProps{})
+	dag.NodeNewOutputValue(node, dag.StringValueVar, &ioswitch2.VarProps{})
 }
 
 func (t *IPFSWriteType) GenerateOp(op *dag.Node) (exec.Op, error) {
diff --git a/common/pkgs/ioswitch2/parser/parser.go b/common/pkgs/ioswitch2/parser/parser.go
index bd6aed1..3eff6b5 100644
--- a/common/pkgs/ioswitch2/parser/parser.go
+++ b/common/pkgs/ioswitch2/parser/parser.go
@@ -35,7 +35,7 @@ type ParseContext struct {
 }
 
 func (p *DefaultParser) Parse(ft ioswitch2.FromTo, blder *exec.PlanBuilder) error {
-	ctx := ParseContext{Ft: ft}
+	ctx := ParseContext{Ft: ft, DAG: dag.NewGraph()}
 
 	// 分成两个阶段：
 	// 1. 基于From和To生成更多指令，初步匹配to的需求
@@ -136,17 +136,15 @@ func (p *DefaultParser) calcStreamRange(ctx *ParseContext) {
 
 func (p *DefaultParser) extend(ctx *ParseContext, ft ioswitch2.FromTo) error {
 	for _, fr := range ft.Froms {
-		_, err := p.buildFromNode(ctx, &ft, fr)
+		frNode, err := p.buildFromNode(ctx, &ft, fr)
 		if err != nil {
 			return err
 		}
 
 		// 对于完整文件的From，生成Split指令
 		if fr.GetDataIndex() == -1 {
-			n, _ := dag.NewNode(ctx.DAG, &ops2.ChunkedSplitType{ChunkSize: p.EC.ChunkSize, OutputCount: p.EC.K}, &ioswitch2.NodeProps{})
-			for i := 0; i < p.EC.K; i++ {
-				ioswitch2.SProps(n.OutputStreams[i]).StreamIndex = i
-			}
+			node, _ := dag.NewNode(ctx.DAG, &ops2.ChunkedSplitType{ChunkSize: p.EC.ChunkSize, OutputCount: p.EC.K}, &ioswitch2.NodeProps{})
+			frNode.OutputStreams[0].To(node, 0)
 		}
 	}
 
@@ -170,7 +168,7 @@ loop:
 		}, &ioswitch2.NodeProps{})
 
 		for _, s := range ecInputStrs {
-			mulType.AddInput(mulNode, s)
+			mulType.AddInput(mulNode, s, ioswitch2.SProps(s).StreamIndex)
 		}
 		for i := 0; i < p.EC.N; i++ {
 			mulType.NewOutput(mulNode, i)
@@ -247,6 +245,7 @@ func (p *DefaultParser) buildFromNode(ctx *ParseContext, ft *ioswitch2.FromTo, f
 
 		if f.Node != nil {
 			n.Env.ToEnvWorker(&ioswitch2.AgentWorker{Node: *f.Node})
+			n.Env.Pinned = true
 		}
 
 		return n, nil
@@ -254,6 +253,7 @@ func (p *DefaultParser) buildFromNode(ctx *ParseContext, ft *ioswitch2.FromTo, f
 	case *ioswitch2.FromDriver:
 		n, _ := dag.NewNode(ctx.DAG, &ops.FromDriverType{Handle: f.Handle}, &ioswitch2.NodeProps{From: f})
 		n.Env.ToEnvDriver()
+		n.Env.Pinned = true
 		ioswitch2.SProps(n.OutputStreams[0]).StreamIndex = f.DataIndex
 
 		if f.DataIndex == -1 {
@@ -280,12 +280,15 @@ func (p *DefaultParser) buildToNode(ctx *ParseContext, ft *ioswitch2.FromTo, t i
 		}, &ioswitch2.NodeProps{
 			To: t,
 		})
+		n.Env.ToEnvWorker(&ioswitch2.AgentWorker{Node: t.Node})
+		n.Env.Pinned = true
 
 		return n, nil
 
 	case *ioswitch2.ToDriver:
 		n, _ := dag.NewNode(ctx.DAG, &ops.ToDriverType{Handle: t.Handle, Range: t.Range}, &ioswitch2.NodeProps{To: t})
 		n.Env.ToEnvDriver()
+		n.Env.Pinned = true
 
 		return n, nil
 
@@ -324,9 +327,11 @@ func (p *DefaultParser) removeUnusedMultiplyOutput(ctx *ParseContext) bool {
 			}
 
 			node.OutputStreams[i2] = nil
+			typ.OutputIndexes[i2] = -2
 			changed = true
 		}
 		node.OutputStreams = lo2.RemoveAllDefault(node.OutputStreams)
+		typ.OutputIndexes = lo2.RemoveAll(typ.OutputIndexes, -2)
 
 		// 如果所有输出流都被删除，则删除该指令
 		if len(node.OutputStreams) == 0 {
@@ -422,6 +427,10 @@ func (p *DefaultParser) omitSplitJoin(ctx *ParseContext) bool {
 func (p *DefaultParser) pin(ctx *ParseContext) bool {
 	changed := false
 	ctx.DAG.Walk(func(node *dag.Node) bool {
+		if node.Env.Pinned {
+			return true
+		}
+
 		var toEnv *dag.NodeEnv
 		for _, out := range node.OutputStreams {
 			for _, to := range out.Toes {
@@ -496,12 +505,11 @@ func (p *DefaultParser) storeIPFSWriteResult(ctx *ParseContext) {
 			return true
 		}
 
-		n := ctx.DAG.NewNode(&ops.StoreType{
+		n, t := dag.NewNode(ctx.DAG, &ops.StoreType{
 			StoreKey: typ.FileHashStoreKey,
 		}, &ioswitch2.NodeProps{})
 		n.Env.ToEnvDriver()
-
-		node.OutputValues[0].To(n, 0)
+		t.Store(n, node.OutputValues[0])
 		return true
 	})
 }
@@ -564,7 +572,9 @@ func (p *DefaultParser) generateClone(ctx *ParseContext) {
 			n, t := dag.NewNode(ctx.DAG, &ops2.CloneStreamType{}, &ioswitch2.NodeProps{})
 			n.Env = node.Env
 			for _, to := range out.Toes {
-				t.NewOutput(node).To(to.Node, to.SlotIndex)
+				str := t.NewOutput(n)
+				str.Props = &ioswitch2.VarProps{StreamIndex: ioswitch2.SProps(out).StreamIndex}
+				str.To(to.Node, to.SlotIndex)
 			}
 			out.Toes = nil
 			out.To(n, 0)
@@ -578,7 +588,7 @@ func (p *DefaultParser) generateClone(ctx *ParseContext) {
 			n, t := dag.NewNode(ctx.DAG, &ops2.CloneVarType{}, &ioswitch2.NodeProps{})
 			n.Env = node.Env
 			for _, to := range out.Toes {
-				t.NewOutput(node).To(to.Node, to.SlotIndex)
+				t.NewOutput(n).To(to.Node, to.SlotIndex)
 			}
 			out.Toes = nil
 			out.To(n, 0)
diff --git a/common/pkgs/ioswitchlrc/ops2/clone.go b/common/pkgs/ioswitchlrc/ops2/clone.go
index d53e29b..d577b53 100644
--- a/common/pkgs/ioswitchlrc/ops2/clone.go
+++ b/common/pkgs/ioswitchlrc/ops2/clone.go
@@ -104,7 +104,7 @@ func (t *CloneVarType) GenerateOp(op *dag.Node) (exec.Op, error) {
 }
 
 func (t *CloneVarType) NewOutput(node *dag.Node) *dag.ValueVar {
-	return dag.NodeNewOutputValue(node, nil)
+	return dag.NodeNewOutputValue(node, node.InputValues[0].Type, nil)
 }
 
 func (t *CloneVarType) String(node *dag.Node) string {
diff --git a/common/pkgs/ioswitchlrc/ops2/ipfs.go b/common/pkgs/ioswitchlrc/ops2/ipfs.go
index fa02b6d..303157a 100644
--- a/common/pkgs/ioswitchlrc/ops2/ipfs.go
+++ b/common/pkgs/ioswitchlrc/ops2/ipfs.go
@@ -114,7 +114,7 @@ type IPFSWriteType struct {
 
 func (t *IPFSWriteType) InitNode(node *dag.Node) {
 	dag.NodeDeclareInputStream(node, 1)
-	dag.NodeNewOutputValue(node, &ioswitch2.VarProps{})
+	dag.NodeNewOutputValue(node, dag.StringValueVar, &ioswitch2.VarProps{})
 }
 
 func (t *IPFSWriteType) GenerateOp(op *dag.Node) (exec.Op, error) {
diff --git a/common/pkgs/ioswitchlrc/parser/passes.go b/common/pkgs/ioswitchlrc/parser/passes.go
index ed4b1c9..984cae2 100644
--- a/common/pkgs/ioswitchlrc/parser/passes.go
+++ b/common/pkgs/ioswitchlrc/parser/passes.go
@@ -89,6 +89,7 @@ func buildFromNode(ctx *GenerateContext, f ioswitchlrc.From) (*dag.Node, error)
 
 		if f.Node != nil {
 			n.Env.ToEnvWorker(&ioswitchlrc.AgentWorker{Node: *f.Node})
+			n.Env.Pinned = true
 		}
 
 		return n, nil
@@ -96,6 +97,7 @@ func buildFromNode(ctx *GenerateContext, f ioswitchlrc.From) (*dag.Node, error)
 	case *ioswitchlrc.FromDriver:
 		n, _ := dag.NewNode(ctx.DAG, &ops.FromDriverType{Handle: f.Handle}, &ioswitchlrc.NodeProps{From: f})
 		n.Env.ToEnvDriver()
+		n.Env.Pinned = true
 		ioswitchlrc.SProps(n.OutputStreams[0]).StreamIndex = f.DataIndex
 
 		if f.DataIndex == -1 {
@@ -122,12 +124,15 @@ func buildToNode(ctx *GenerateContext, t ioswitchlrc.To) (*dag.Node, error) {
 		}, &ioswitchlrc.NodeProps{
 			To: t,
 		})
+		n.Env.ToEnvWorker(&ioswitchlrc.AgentWorker{Node: t.Node})
+		n.Env.Pinned = true
 
 		return n, nil
 
 	case *ioswitchlrc.ToDriver:
 		n, _ := dag.NewNode(ctx.DAG, &ops.ToDriverType{Handle: t.Handle, Range: t.Range}, &ioswitchlrc.NodeProps{To: t})
 		n.Env.ToEnvDriver()
+		n.Env.Pinned = true
 
 		return n, nil
 
@@ -142,6 +147,10 @@ func buildToNode(ctx *GenerateContext, t ioswitchlrc.To) (*dag.Node, error) {
 func pin(ctx *GenerateContext) bool {
 	changed := false
 	ctx.DAG.Walk(func(node *dag.Node) bool {
+		if node.Env.Pinned {
+			return true
+		}
+
 		var toEnv *dag.NodeEnv
 		for _, out := range node.OutputStreams {
 			for _, to := range out.Toes {