diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 7bfd484f0..e20087ce4 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -585,59 +585,57 @@ func detectMimeType(f *os.File) string {
 
 func (worker *FileCopyWorker) saveDataAsChunk(reader io.Reader, name string, offset int64) (chunk *filer_pb.FileChunk, err error) {
 
-	var fileId, host string
-	var auth security.EncodedJwt
+	var finalFileId string
+	uploadResult, flushErr, _ := operation.UploadWithRetry(
+		worker,
+		&filer_pb.AssignVolumeRequest{
+			Count:       1,
+			Replication: *worker.options.replication,
+			Collection:  *worker.options.collection,
+			TtlSec:      worker.options.ttlSec,
+			DiskType:    *worker.options.diskType,
+			Path:        name,
+		},
+		&operation.UploadOption{
+			Filename:          name,
+			Cipher:            worker.options.cipher,
+			IsInputCompressed: false,
+			MimeType:          "",
+			PairMap:           nil,
+		},
+		func(host, fileId string) string {
+			finalFileId = fileId
+			return fmt.Sprintf("http://%s/%s", host, fileId)
+		},
+		reader,
+	)
 
-	if flushErr := pb.WithGrpcFilerClient(false, worker.filerAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-
-		ctx := context.Background()
-
-		assignErr := util.Retry("assignVolume", func() error {
-			request := &filer_pb.AssignVolumeRequest{
-				Count:       1,
-				Replication: *worker.options.replication,
-				Collection:  *worker.options.collection,
-				TtlSec:      worker.options.ttlSec,
-				DiskType:    *worker.options.diskType,
-				Path:        name,
-			}
-
-			resp, err := client.AssignVolume(ctx, request)
-			if err != nil {
-				return fmt.Errorf("assign volume failure %v: %v", request, err)
-			}
-			if resp.Error != "" {
-				return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
-			}
-
-			fileId, host, auth = resp.FileId, resp.Location.Url, security.EncodedJwt(resp.Auth)
-
-			return nil
-		})
-		if assignErr != nil {
-			return assignErr
-		}
-
-		return nil
-	}); flushErr != nil {
-		return nil, fmt.Errorf("filerGrpcAddress assign volume: %v", flushErr)
-	}
-
-	uploadOption := &operation.UploadOption{
-		UploadUrl:         fmt.Sprintf("http://%s/%s", host, fileId),
-		Filename:          name,
-		Cipher:            worker.options.cipher,
-		IsInputCompressed: false,
-		MimeType:          "",
-		PairMap:           nil,
-		Jwt:               auth,
-	}
-	uploadResult, flushErr, _ := operation.Upload(reader, uploadOption)
 	if flushErr != nil {
 		return nil, fmt.Errorf("upload data: %v", flushErr)
 	}
 	if uploadResult.Error != "" {
 		return nil, fmt.Errorf("upload result: %v", uploadResult.Error)
 	}
-	return uploadResult.ToPbFileChunk(fileId, offset), nil
+	return uploadResult.ToPbFileChunk(finalFileId, offset), nil
+}
+
+var _ = filer_pb.FilerClient(&FileCopyWorker{})
+
+func (worker *FileCopyWorker) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) (err error) {
+
+	filerGrpcAddress := worker.filerAddress.ToGrpcAddress()
+	err = pb.WithGrpcClient(streamingMode, func(grpcConnection *grpc.ClientConn) error {
+		client := filer_pb.NewSeaweedFilerClient(grpcConnection)
+		return fn(client)
+	}, filerGrpcAddress, worker.options.grpcDialOption)
+
+	return
+}
+
+func (worker *FileCopyWorker) AdjustedUrl(location *filer_pb.Location) string {
+	return location.Url
+}
+
+func (worker *FileCopyWorker) GetDataCenter() string {
+	return ""
 }
diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index cafba5ce9..76f55523a 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -2,6 +2,7 @@ package operation
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"github.com/seaweedfs/seaweedfs/weed/glog"
@@ -28,6 +29,7 @@ type UploadOption struct {
 	MimeType          string
 	PairMap           map[string]string
 	Jwt               security.EncodedJwt
+	RetryForever      bool
 }
 
 type UploadResult struct {
@@ -76,6 +78,53 @@ func init() {
 	}}
 }
 
+// UploadWithRetry will retry both assigning volume request and uploading content
+// The option parameter does not need to specify UploadUrl and Jwt, which will come from assigning volume.
+func UploadWithRetry(filerClient filer_pb.FilerClient, assignRequest *filer_pb.AssignVolumeRequest, uploadOption *UploadOption, genFileUrlFn func(host, fileId string) string, reader io.Reader) (uploadResult *UploadResult, err error, data []byte) {
+	doUploadFunc := func() error {
+
+		var fileId, host string
+		var auth security.EncodedJwt
+
+		// grpc assign volume
+		if grpcAssignErr := filerClient.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
+			resp, assignErr := client.AssignVolume(context.Background(), assignRequest)
+			if assignErr != nil {
+				glog.V(0).Infof("assign volume failure %v: %v", assignRequest, assignErr)
+				return assignErr
+			}
+			if resp.Error != "" {
+				return fmt.Errorf("assign volume failure %v: %v", assignRequest, resp.Error)
+			}
+
+			fileId, auth = resp.FileId, security.EncodedJwt(resp.Auth)
+			loc := resp.Location
+			host = filerClient.AdjustedUrl(loc)
+
+			return nil
+		}); grpcAssignErr != nil {
+			return fmt.Errorf("filerGrpcAddress assign volume: %v", grpcAssignErr)
+		}
+
+		uploadOption.UploadUrl = genFileUrlFn(host, fileId)
+		uploadOption.Jwt = auth
+
+		var uploadErr error
+		uploadResult, uploadErr, data = doUpload(reader, uploadOption)
+		return uploadErr
+	}
+	if uploadOption.RetryForever {
+		util.RetryForever("uploadWithRetryForever", doUploadFunc, func(err error) (shouldContinue bool) {
+			glog.V(0).Infof("upload content: %v", err)
+			return true
+		})
+	} else {
+		err = util.Retry("uploadWithRetry", doUploadFunc)
+	}
+
+	return
+}
+
 var fileNameEscaper = strings.NewReplacer(`\`, `\\`, `"`, `\"`, "\n", "")
 
 // Upload sends a POST request to a volume server to upload the content with adjustable compression level