diff --git a/weed/filesys/dirty_pages_mem_chunk.go b/weed/filesys/dirty_pages_mem_chunk.go
index 98b3929ac..7e8dc0b05 100644
--- a/weed/filesys/dirty_pages_mem_chunk.go
+++ b/weed/filesys/dirty_pages_mem_chunk.go
@@ -11,7 +11,7 @@ import (
 )
 
 type MemoryChunkPages struct {
-	f              *File
+	fh             *FileHandle
 	writeWaitGroup sync.WaitGroup
 	chunkAddLock   sync.Mutex
 	lastErr        error
@@ -21,14 +21,14 @@ type MemoryChunkPages struct {
 	hasWrites      bool
 }
 
-func newMemoryChunkPages(file *File, chunkSize int64) *MemoryChunkPages {
+func newMemoryChunkPages(fh *FileHandle, chunkSize int64) *MemoryChunkPages {
 
 	dirtyPages := &MemoryChunkPages{
-		f: file,
+		fh: fh,
 	}
 
 	dirtyPages.uploadPipeline = page_writer.NewUploadPipeline(
-		file.wfs.concurrentWriters, chunkSize, dirtyPages.saveChunkedFileIntevalToStorage)
+		fh.f.wfs.concurrentWriters, chunkSize, dirtyPages.saveChunkedFileIntevalToStorage)
 
 	return dirtyPages
 }
@@ -36,7 +36,7 @@ func newMemoryChunkPages(file *File, chunkSize int64) *MemoryChunkPages {
 func (pages *MemoryChunkPages) AddPage(offset int64, data []byte) {
 	pages.hasWrites = true
 
-	glog.V(4).Infof("%v memory AddPage [%d, %d)", pages.f.fullpath(), offset, offset+int64(len(data)))
+	glog.V(4).Infof("%v memory AddPage [%d, %d)", pages.fh.f.fullpath(), offset, offset+int64(len(data)))
 	pages.uploadPipeline.SaveDataAt(data, offset)
 
 	return
@@ -79,23 +79,24 @@ func (pages *MemoryChunkPages) saveChunkedFileIntevalToStorage(reader io.Reader,
 		defer pages.writeWaitGroup.Done()
 		defer cleanupFn()
 
-		chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath())(reader, pages.f.Name, offset)
+		chunk, collection, replication, err := pages.fh.f.wfs.saveDataAsChunk(pages.fh.f.fullpath())(reader, pages.fh.f.Name, offset)
 		if err != nil {
-			glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.f.fullpath(), offset, offset+size, err)
+			glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.fh.f.fullpath(), offset, offset+size, err)
 			pages.lastErr = err
 			return
 		}
 		chunk.Mtime = mtime
 		pages.collection, pages.replication = collection, replication
 		pages.chunkAddLock.Lock()
-		pages.f.addChunks([]*filer_pb.FileChunk{chunk})
-		glog.V(3).Infof("%s saveToStorage %s [%d,%d)", pages.f.fullpath(), chunk.FileId, offset, offset+size)
+		pages.fh.f.addChunks([]*filer_pb.FileChunk{chunk})
+		pages.fh.entryViewCache = nil
+		glog.V(3).Infof("%s saveToStorage %s [%d,%d)", pages.fh.f.fullpath(), chunk.FileId, offset, offset+size)
 		pages.chunkAddLock.Unlock()
 
 	}
 
-	if pages.f.wfs.concurrentWriters != nil {
-		pages.f.wfs.concurrentWriters.Execute(writer)
+	if pages.fh.f.wfs.concurrentWriters != nil {
+		pages.fh.f.wfs.concurrentWriters.Execute(writer)
 	} else {
 		go writer()
 	}
diff --git a/weed/filesys/filehandle.go b/weed/filesys/filehandle.go
index ef8f62938..8545be9b6 100644
--- a/weed/filesys/filehandle.go
+++ b/weed/filesys/filehandle.go
@@ -36,12 +36,12 @@ type FileHandle struct {
 
 func newFileHandle(file *File, uid, gid uint32) *FileHandle {
 	fh := &FileHandle{
-		f: file,
-		// dirtyPages: newContinuousDirtyPages(file, writeOnly),
-		dirtyPages: newPageWriter(file, file.wfs.option.ChunkSizeLimit),
-		Uid:        uid,
-		Gid:        gid,
+		f:   file,
+		Uid: uid,
+		Gid: gid,
 	}
+	// dirtyPages: newContinuousDirtyPages(file, writeOnly),
+	fh.dirtyPages = newPageWriter(fh, file.wfs.option.ChunkSizeLimit)
 	entry := fh.f.getEntry()
 	if entry != nil {
 		entry.Attributes.FileSize = filer.FileSize(entry)
@@ -149,6 +149,7 @@ func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, error) {
 	reader := fh.reader
 	if reader == nil {
 		chunkViews := filer.ViewFromVisibleIntervals(fh.entryViewCache, 0, math.MaxInt64)
+		glog.V(4).Infof("file handle read %s [%d,%d) from %+v", fileFullPath, offset, offset+int64(len(buff)), chunkViews)
 		reader = filer.NewChunkReaderAtFromClient(fh.f.wfs.LookupFn(), chunkViews, fh.f.wfs.chunkCache, fileSize)
 	}
 	fh.reader = reader
diff --git a/weed/filesys/page_writer.go b/weed/filesys/page_writer.go
index d618a1dda..90ef7d7c4 100644
--- a/weed/filesys/page_writer.go
+++ b/weed/filesys/page_writer.go
@@ -6,7 +6,7 @@ import (
 )
 
 type PageWriter struct {
-	f             *File
+	fh            *FileHandle
 	collection    string
 	replication   string
 	chunkSize     int64
@@ -20,19 +20,19 @@ var (
 	_ = page_writer.DirtyPages(&PageWriter{})
 )
 
-func newPageWriter(file *File, chunkSize int64) *PageWriter {
+func newPageWriter(fh *FileHandle, chunkSize int64) *PageWriter {
 	pw := &PageWriter{
-		f:             file,
+		fh:            fh,
 		chunkSize:     chunkSize,
 		writerPattern: NewWriterPattern(chunkSize),
-		randomWriter:  newMemoryChunkPages(file, chunkSize),
+		randomWriter:  newMemoryChunkPages(fh, chunkSize),
 	}
 	return pw
 }
 
 func (pw *PageWriter) AddPage(offset int64, data []byte) {
 
-	glog.V(4).Infof("%v AddPage [%d, %d) streaming:%v", pw.f.fullpath(), offset, offset+int64(len(data)), pw.writerPattern.IsStreamingMode())
+	glog.V(4).Infof("%v AddPage [%d, %d) streaming:%v", pw.fh.f.fullpath(), offset, offset+int64(len(data)), pw.writerPattern.IsStreamingMode())
 
 	chunkIndex := offset / pw.chunkSize
 	for i := chunkIndex; len(data) > 0; i++ {
@@ -64,7 +64,7 @@ func (pw *PageWriter) FlushData() error {
 }
 
 func (pw *PageWriter) ReadDirtyDataAt(data []byte, offset int64) (maxStop int64) {
-	glog.V(4).Infof("ReadDirtyDataAt %v [%d, %d)", pw.f.fullpath(), offset, offset+int64(len(data)))
+	glog.V(4).Infof("ReadDirtyDataAt %v [%d, %d)", pw.fh.f.fullpath(), offset, offset+int64(len(data)))
 
 	chunkIndex := offset / pw.chunkSize
 	for i := chunkIndex; len(data) > 0; i++ {