diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 5a878e675..86f43348f 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -13,6 +13,12 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"path"
 	"net/http"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"strconv"
+	"io"
+	"time"
+	"google.golang.org/grpc"
+	"context"
 )
 
 var (
@@ -144,10 +150,10 @@ func doEachCopy(fileOrDir string, host string, path string) bool {
 		return uploadFileAsOne(host, path, assignResult, f, fi)
 	}
 
-	return uploadFileInChunks(host, path, assignResult, f, chunkCount)
+	return uploadFileInChunks(host, path, assignResult, f, fi, chunkCount, chunkSize)
 }
 
-func uploadFileAsOne(filerUrl string, urlPath string, assignResult *operation.AssignResult, f *os.File, fi os.FileInfo) bool {
+func uploadFileAsOne(filerUrl string, urlFolder string, assignResult *operation.AssignResult, f *os.File, fi os.FileInfo) bool {
 	// upload the file content
 
 	mimeType := detectMimeType(f)
@@ -164,19 +170,82 @@ func uploadFileAsOne(filerUrl string, urlPath string, assignResult *operation.As
 		fmt.Printf("upload %v to %s result: %v\n", f.Name(), targetUrl, uploadResult.Error)
 		return false
 	}
+	fmt.Printf("uploaded %s to %s\n", f.Name(), targetUrl)
 
-	if err = filer_operation.RegisterFile(filerUrl, filepath.Join(urlPath, f.Name()), assignResult.Fid, fi.Size(),
+	if err = filer_operation.RegisterFile(filerUrl, filepath.Join(urlFolder, f.Name()), assignResult.Fid, fi.Size(),
 		os.Getuid(), os.Getgid(), copy.secret); err != nil {
 		fmt.Printf("Failed to register file %s on %s: %v\n", f.Name(), filerUrl, err)
 		return false
 	}
 
-	fmt.Printf("Copied %s => http://%s%s\n", f.Name(), filerUrl, urlPath)
+	fmt.Printf("copied %s => http://%s%s%s\n", f.Name(), filerUrl, urlFolder, f.Name())
 	return true
 }
 
-func uploadFileInChunks(filerUrl string, path string, assignResult *operation.AssignResult, f *os.File, chunkCount int) bool {
-	return false
+func uploadFileInChunks(filerUrl string, urlFolder string, assignResult *operation.AssignResult, f *os.File, fi os.FileInfo, chunkCount int, chunkSize int64) bool {
+
+	var chunks []*filer_pb.FileChunk
+
+	for i := int64(0); i < int64(chunkCount); i++ {
+		fileId := assignResult.Fid
+		if i > 0 {
+			fileId += "_" + strconv.FormatInt(i, 10)
+		}
+
+		targetUrl := "http://" + assignResult.Url + "/" + fileId
+
+		uploadResult, err := operation.Upload(targetUrl,
+			f.Name()+"-"+strconv.FormatInt(i+1, 10),
+			io.LimitReader(f, chunkSize),
+			false, "application/octet-stream", nil, "")
+		if err != nil {
+			fmt.Printf("upload data %v to %s: %v\n", f.Name(), targetUrl, err)
+			return false
+		}
+		if uploadResult.Error != "" {
+			fmt.Printf("upload %v to %s result: %v\n", f.Name(), targetUrl, uploadResult.Error)
+			return false
+		}
+		chunks = append(chunks, &filer_pb.FileChunk{
+			FileId: fileId,
+			Offset: i * chunkSize,
+			Size:   uint64(uploadResult.Size),
+			Mtime:  time.Now().UnixNano(),
+		})
+		fmt.Printf("uploaded %s split %d => %s\n", f.Name(), i, targetUrl)
+	}
+
+	if err := withFilerClient(filerUrl, func(client filer_pb.SeaweedFilerClient) error {
+		request := &filer_pb.CreateEntryRequest{
+			Directory: urlFolder,
+			Entry: &filer_pb.Entry{
+				Name: f.Name(),
+				Attributes: &filer_pb.FuseAttributes{
+					Crtime:   time.Now().Unix(),
+					Mtime:    time.Now().Unix(),
+					Gid:      uint32(os.Getgid()),
+					Uid:      uint32(os.Getuid()),
+					FileSize: uint64(fi.Size()),
+					FileMode: uint32(fi.Mode()),
+				},
+				Chunks: chunks,
+			},
+		}
+
+		fmt.Printf("%s%s set chunks: %v", urlFolder, f.Name(), len(chunks))
+		for i, chunk := range chunks {
+			fmt.Printf("%s%s chunks %d: %v [%d,%d)\n", urlFolder, f.Name(), i, chunk.FileId, chunk.Offset, chunk.Offset+int64(chunk.Size))
+		}
+		if _, err := client.CreateEntry(context.Background(), request); err != nil {
+			return fmt.Errorf("update fh: %v", err)
+		}
+		return nil
+	}); err != nil {
+		fmt.Printf("upload data %v to http://%s%s%s: %v\n", f.Name(), filerUrl, urlFolder, f.Name(), err)
+		return false
+	}
+
+	return true
 }
 
 func isGzipped(filename string) bool {
@@ -195,3 +264,16 @@ func detectMimeType(f *os.File) string {
 	mimeType := http.DetectContentType(head[:n])
 	return mimeType
 }
+
+func withFilerClient(filerAddress string, fn func(filer_pb.SeaweedFilerClient) error) error {
+
+	grpcConnection, err := grpc.Dial(filerAddress, grpc.WithInsecure())
+	if err != nil {
+		return fmt.Errorf("fail to dial %s: %v", filerAddress, err)
+	}
+	defer grpcConnection.Close()
+
+	client := filer_pb.NewSeaweedFilerClient(grpcConnection)
+
+	return fn(client)
+}