diff --git a/client/internal/mount/vfs/cache/cache.go b/client/internal/mount/vfs/cache/cache.go
index 1a3f67c..473b1c4 100644
--- a/client/internal/mount/vfs/cache/cache.go
+++ b/client/internal/mount/vfs/cache/cache.go
@@ -705,7 +705,9 @@ func (c *Cache) visitNode(path []string, node *trie.Node[*CacheFile], ch *CacheF
 		}
 
 		// 上传文件需要完全加载级别的缓存等级
-		ch.LevelUp(LevelComplete)
+		if !ch.LevelUp(LevelComplete) {
+			return
+		}
 
 		fullName := packageFullName{ch.pathComps[0], ch.pathComps[1]}
 		pkg, ok := uploadingPkgs[fullName]
@@ -717,20 +719,20 @@ func (c *Cache) visitNode(path []string, node *trie.Node[*CacheFile], ch *CacheF
 			uploadingPkgs[fullName] = pkg
 		}
 
-		obj := &uploadingObject{
+		up := &uploadingObject{
 			pathComps: lo2.ArrayClone(ch.pathComps),
 			cache:     ch,
 		}
-		pkg.upObjs = append(pkg.upObjs, obj)
-		ch.state.uploading = obj
+		pkg.upObjs = append(pkg.upObjs, up)
+		ch.state.uploading = up
 
 		if info.DataRevision > 0 {
-			obj.reader = ch.OpenReadWhenScanning()
+			up.reader = ch.OpenReadWhenScanning()
 		}
 
 		if info.MetaRevision > 0 {
-			obj.modTime = info.ModTime
-			obj.metaRevision = info.MetaRevision
+			up.modTime = info.ModTime
+			up.metaRevision = info.MetaRevision
 		}
 		return
 	}
diff --git a/client/internal/mount/vfs/cache/file.go b/client/internal/mount/vfs/cache/file.go
index 564e348..bbcf6f0 100644
--- a/client/internal/mount/vfs/cache/file.go
+++ b/client/internal/mount/vfs/cache/file.go
@@ -340,7 +340,6 @@ func loadReadOnlyCacheFile(cache *Cache, pathComps []string) (*CacheFile, error)
 
 	metaData, err := os.ReadFile(metaPath)
 	if err != nil {
-		// 如果有数据文件，而没有元数据文件，则创建一个元数据文件
 		if !os.IsNotExist(err) {
 			return nil, err
 		}
@@ -357,6 +356,8 @@ func loadReadOnlyCacheFile(cache *Cache, pathComps []string) (*CacheFile, error)
 		info.MetaRevision = 1 // 未同步的文件视为已修改
 		info.DataRevision = 1
 
+		// 实际的元数据文件在LevelUp时才创建
+
 	} else {
 		err = serder.JSONToObject(metaData, info)
 		if err != nil {
@@ -518,7 +519,7 @@ func (f *CacheFile) LevelUp(level CacheLevel) bool {
 
 	case LevelReadOnly:
 		metaPath := f.cache.GetCacheMetaPath(f.pathComps...)
-		metaFile, err := os.OpenFile(metaPath, os.O_RDWR, 0644)
+		metaFile, err := os.OpenFile(metaPath, os.O_RDWR|os.O_CREATE, 0644)
 		if err != nil {
 			logger.Warnf("open meta file %v: %v", metaPath, err)
 			return false
diff --git a/hub/internal/rpc/ioswitch.go b/hub/internal/rpc/ioswitch.go
index a97e7be..dd5375d 100644
--- a/hub/internal/rpc/ioswitch.go
+++ b/hub/internal/rpc/ioswitch.go
@@ -41,10 +41,10 @@ func (s *Service) SendIOStream(ctx context.Context, req *hubrpc.SendIOStream) (*
 		Debugf("stream input")
 
 	// 同一批Plan中每个节点的Plan的启动时间有先后，但最多不应该超过30秒
-	ctx, cancel := context.WithTimeout(ctx, time.Second*30)
+	ctx2, cancel := context.WithTimeout(ctx, time.Second*30)
 	defer cancel()
 
-	sw := s.swWorker.FindByIDContexted(ctx, exec.PlanID(req.PlanID))
+	sw := s.swWorker.FindByIDContexted(ctx2, exec.PlanID(req.PlanID))
 	if sw == nil {
 		return nil, rpc.Failed(errorcode.DataNotFound, "plan not found")
 	}
@@ -72,10 +72,10 @@ func (s *Service) GetIOStream(ctx context.Context, req *hubrpc.GetIOStream) (*hu
 		Debugf("stream output")
 
 	// 同上
-	ctx, cancel := context.WithTimeout(ctx, time.Second*30)
+	ctx2, cancel := context.WithTimeout(ctx, time.Second*30)
 	defer cancel()
 
-	sw := s.swWorker.FindByIDContexted(ctx, exec.PlanID(req.PlanID))
+	sw := s.swWorker.FindByIDContexted(ctx2, exec.PlanID(req.PlanID))
 	if sw == nil {
 		return nil, rpc.Failed(errorcode.DataNotFound, "plan not found")
 	}
@@ -93,10 +93,10 @@ func (s *Service) GetIOStream(ctx context.Context, req *hubrpc.GetIOStream) (*hu
 }
 
 func (s *Service) SendIOVar(ctx context.Context, req *hubrpc.SendIOVar) (*hubrpc.SendIOVarResp, *rpc.CodeError) {
-	ctx, cancel := context.WithTimeout(ctx, time.Second*30)
+	ctx2, cancel := context.WithTimeout(ctx, time.Second*30)
 	defer cancel()
 
-	sw := s.swWorker.FindByIDContexted(ctx, exec.PlanID(req.PlanID))
+	sw := s.swWorker.FindByIDContexted(ctx2, exec.PlanID(req.PlanID))
 	if sw == nil {
 		return nil, rpc.Failed(errorcode.DataNotFound, "plan not found")
 	}