diff --git a/other/java/client/src/main/proto/filer.proto b/other/java/client/src/main/proto/filer.proto
index 5983c84d8..8df46e917 100644
--- a/other/java/client/src/main/proto/filer.proto
+++ b/other/java/client/src/main/proto/filer.proto
@@ -100,6 +100,7 @@ message FileChunk {
     FileId fid = 7;
     FileId source_fid = 8;
     bytes cipher_key = 9;
+    bool is_gzipped = 10;
 }
 
 message FileId {
diff --git a/unmaintained/repeated_vacuum/repeated_vacuum.go b/unmaintained/repeated_vacuum/repeated_vacuum.go
index ebe5d8225..c2f626f72 100644
--- a/unmaintained/repeated_vacuum/repeated_vacuum.go
+++ b/unmaintained/repeated_vacuum/repeated_vacuum.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"bytes"
 	"flag"
 	"fmt"
 	"log"
@@ -31,11 +30,10 @@ func main() {
 
 		data := make([]byte, 1024)
 		rand.Read(data)
-		reader := bytes.NewReader(data)
 
 		targetUrl := fmt.Sprintf("http://%s/%s", assignResult.Url, assignResult.Fid)
 
-		_, err = operation.Upload(targetUrl, fmt.Sprintf("test%d", i), false, reader, false, "bench/test", nil, assignResult.Auth)
+		_, err = operation.UploadData(targetUrl, fmt.Sprintf("test%d", i), false, data, false, "bench/test", nil, assignResult.Auth)
 		if err != nil {
 			log.Fatalf("upload: %v", err)
 		}
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 50a120875..1162bb204 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -38,7 +38,6 @@ type CopyOptions struct {
 	masterClient      *wdclient.MasterClient
 	concurrenctFiles  *int
 	concurrenctChunks *int
-	compressionLevel  *int
 	grpcDialOption    grpc.DialOption
 	masters           []string
 	cipher            bool
@@ -54,7 +53,6 @@ func init() {
 	copy.maxMB = cmdCopy.Flag.Int("maxMB", 32, "split files larger than the limit")
 	copy.concurrenctFiles = cmdCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
 	copy.concurrenctChunks = cmdCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
-	copy.compressionLevel = cmdCopy.Flag.Int("compressionLevel", 9, "local file compression level 1 ~ 9")
 }
 
 var cmdCopy = &Command{
@@ -270,6 +268,10 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 	// upload the file content
 	fileName := filepath.Base(f.Name())
 	mimeType := detectMimeType(f)
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return err
+	}
 
 	var chunks []*filer_pb.FileChunk
 	var assignResult *filer_pb.AssignVolumeResponse
@@ -303,7 +305,7 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 
 		targetUrl := "http://" + assignResult.Url + "/" + assignResult.FileId
 
-		uploadResult, err := operation.UploadWithLocalCompressionLevel(targetUrl, fileName, worker.options.cipher, f, false, mimeType, nil, security.EncodedJwt(assignResult.Auth), *worker.options.compressionLevel)
+		uploadResult, err := operation.UploadData(targetUrl, fileName, worker.options.cipher, data, false, mimeType, nil, security.EncodedJwt(assignResult.Auth))
 		if err != nil {
 			return fmt.Errorf("upload data %v to %s: %v\n", fileName, targetUrl, err)
 		}
@@ -317,8 +319,9 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 			Offset:    0,
 			Size:      uint64(uploadResult.Size),
 			Mtime:     time.Now().UnixNano(),
-			ETag:      uploadResult.ETag,
+			ETag:      uploadResult.Md5,
 			CipherKey: uploadResult.CipherKey,
+			IsGzipped: uploadResult.Gzip > 0,
 		})
 
 		fmt.Printf("copied %s => http://%s%s%s\n", fileName, worker.filerHost, task.destinationUrlPath, fileName)
@@ -429,6 +432,7 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 				Mtime:     time.Now().UnixNano(),
 				ETag:      uploadResult.ETag,
 				CipherKey: uploadResult.CipherKey,
+				IsGzipped: uploadResult.Gzip > 0,
 			}
 			fmt.Printf("uploaded %s-%d to %s [%d,%d)\n", fileName, i+1, targetUrl, i*chunkSize, i*chunkSize+int64(uploadResult.Size))
 		}(i)
diff --git a/weed/filer2/filechunks.go b/weed/filer2/filechunks.go
index 98a965337..711488df1 100644
--- a/weed/filer2/filechunks.go
+++ b/weed/filer2/filechunks.go
@@ -72,6 +72,7 @@ type ChunkView struct {
 	LogicOffset int64
 	IsFullChunk bool
 	CipherKey   []byte
+	isGzipped   bool
 }
 
 func ViewFromChunks(chunks []*filer_pb.FileChunk, offset int64, size int) (views []*ChunkView) {
@@ -87,6 +88,7 @@ func ViewFromVisibleIntervals(visibles []VisibleInterval, offset int64, size int
 	stop := offset + int64(size)
 
 	for _, chunk := range visibles {
+
 		if chunk.start <= offset && offset < chunk.stop && offset < stop {
 			isFullChunk := chunk.isFullChunk && chunk.start == offset && chunk.stop <= stop
 			views = append(views, &ChunkView{
@@ -96,6 +98,7 @@ func ViewFromVisibleIntervals(visibles []VisibleInterval, offset int64, size int
 				LogicOffset: offset,
 				IsFullChunk: isFullChunk,
 				CipherKey:   chunk.cipherKey,
+				isGzipped:   chunk.isGzipped,
 			})
 			offset = min(chunk.stop, stop)
 		}
@@ -122,7 +125,7 @@ var bufPool = sync.Pool{
 
 func MergeIntoVisibles(visibles, newVisibles []VisibleInterval, chunk *filer_pb.FileChunk) []VisibleInterval {
 
-	newV := newVisibleInterval(chunk.Offset, chunk.Offset+int64(chunk.Size), chunk.GetFileIdString(), chunk.Mtime, true, chunk.CipherKey)
+	newV := newVisibleInterval(chunk.Offset, chunk.Offset+int64(chunk.Size), chunk.GetFileIdString(), chunk.Mtime, true, chunk.CipherKey, chunk.IsGzipped)
 
 	length := len(visibles)
 	if length == 0 {
@@ -136,11 +139,11 @@ func MergeIntoVisibles(visibles, newVisibles []VisibleInterval, chunk *filer_pb.
 	logPrintf("  before", visibles)
 	for _, v := range visibles {
 		if v.start < chunk.Offset && chunk.Offset < v.stop {
-			newVisibles = append(newVisibles, newVisibleInterval(v.start, chunk.Offset, v.fileId, v.modifiedTime, false, v.cipherKey))
+			newVisibles = append(newVisibles, newVisibleInterval(v.start, chunk.Offset, v.fileId, v.modifiedTime, false, v.cipherKey, v.isGzipped))
 		}
 		chunkStop := chunk.Offset + int64(chunk.Size)
 		if v.start < chunkStop && chunkStop < v.stop {
-			newVisibles = append(newVisibles, newVisibleInterval(chunkStop, v.stop, v.fileId, v.modifiedTime, false, v.cipherKey))
+			newVisibles = append(newVisibles, newVisibleInterval(chunkStop, v.stop, v.fileId, v.modifiedTime, false, v.cipherKey, v.isGzipped))
 		}
 		if chunkStop <= v.start || v.stop <= chunk.Offset {
 			newVisibles = append(newVisibles, v)
@@ -171,6 +174,7 @@ func NonOverlappingVisibleIntervals(chunks []*filer_pb.FileChunk) (visibles []Vi
 
 	var newVisibles []VisibleInterval
 	for _, chunk := range chunks {
+
 		newVisibles = MergeIntoVisibles(visibles, newVisibles, chunk)
 		t := visibles[:0]
 		visibles = newVisibles
@@ -193,9 +197,10 @@ type VisibleInterval struct {
 	fileId       string
 	isFullChunk  bool
 	cipherKey    []byte
+	isGzipped    bool
 }
 
-func newVisibleInterval(start, stop int64, fileId string, modifiedTime int64, isFullChunk bool, cipherKey []byte) VisibleInterval {
+func newVisibleInterval(start, stop int64, fileId string, modifiedTime int64, isFullChunk bool, cipherKey []byte, isGzipped bool) VisibleInterval {
 	return VisibleInterval{
 		start:        start,
 		stop:         stop,
@@ -203,6 +208,7 @@ func newVisibleInterval(start, stop int64, fileId string, modifiedTime int64, is
 		modifiedTime: modifiedTime,
 		isFullChunk:  isFullChunk,
 		cipherKey:    cipherKey,
+		isGzipped:    isGzipped,
 	}
 }
 
diff --git a/weed/filer2/filer_client_util.go b/weed/filer2/filer_client_util.go
index 98bb57779..1c1fa6a5b 100644
--- a/weed/filer2/filer_client_util.go
+++ b/weed/filer2/filer_client_util.go
@@ -70,7 +70,7 @@ func ReadIntoBuffer(filerClient FilerClient, fullFilePath FullPath, buff []byte,
 
 			volumeServerAddress := filerClient.AdjustedUrl(locations.Locations[0].Url)
 			var n int64
-			n, err = util.ReadUrl(fmt.Sprintf("http://%s/%s", volumeServerAddress, chunkView.FileId), chunkView.CipherKey, chunkView.IsFullChunk, chunkView.Offset, int(chunkView.Size), buff[chunkView.LogicOffset-baseOffset:chunkView.LogicOffset-baseOffset+int64(chunkView.Size)])
+			n, err = util.ReadUrl(fmt.Sprintf("http://%s/%s", volumeServerAddress, chunkView.FileId), chunkView.CipherKey, chunkView.isGzipped, chunkView.IsFullChunk, chunkView.Offset, int(chunkView.Size), buff[chunkView.LogicOffset-baseOffset:chunkView.LogicOffset-baseOffset+int64(chunkView.Size)])
 
 			if err != nil {
 
diff --git a/weed/filer2/stream.go b/weed/filer2/stream.go
index 0a1f943ea..381d99144 100644
--- a/weed/filer2/stream.go
+++ b/weed/filer2/stream.go
@@ -26,8 +26,9 @@ func StreamContent(masterClient *wdclient.MasterClient, w io.Writer, chunks []*f
 	}
 
 	for _, chunkView := range chunkViews {
+
 		urlString := fileId2Url[chunkView.FileId]
-		err := util.ReadUrlAsStream(urlString, chunkView.CipherKey, chunkView.IsFullChunk, chunkView.Offset, int(chunkView.Size), func(data []byte) {
+		err := util.ReadUrlAsStream(urlString, chunkView.CipherKey, chunkView.isGzipped, chunkView.IsFullChunk, chunkView.Offset, int(chunkView.Size), func(data []byte) {
 			w.Write(data)
 		})
 		if err != nil {
diff --git a/weed/filesys/dir.go b/weed/filesys/dir.go
index 1b11ddb9e..483229b3f 100644
--- a/weed/filesys/dir.go
+++ b/weed/filesys/dir.go
@@ -35,8 +35,6 @@ var _ = fs.NodeForgetter(&Dir{})
 
 func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
 
-	glog.V(3).Infof("dir Attr %s, existing attr: %+v", dir.Path, attr)
-
 	// https://github.com/bazil/fuse/issues/196
 	attr.Valid = time.Second
 
diff --git a/weed/filesys/dirty_page.go b/weed/filesys/dirty_page.go
index ff3b8f885..7e33c97a7 100644
--- a/weed/filesys/dirty_page.go
+++ b/weed/filesys/dirty_page.go
@@ -191,6 +191,7 @@ func (pages *ContinuousDirtyPages) saveToStorage(reader io.Reader, offset int64,
 		Mtime:     time.Now().UnixNano(),
 		ETag:      uploadResult.ETag,
 		CipherKey: uploadResult.CipherKey,
+		IsGzipped: uploadResult.Gzip > 0,
 	}, nil
 
 }
diff --git a/weed/operation/submit.go b/weed/operation/submit.go
index 8c7ed5d7b..5e4dc4374 100644
--- a/weed/operation/submit.go
+++ b/weed/operation/submit.go
@@ -1,8 +1,6 @@
 package operation
 
 import (
-	"bytes"
-	"google.golang.org/grpc"
 	"io"
 	"mime"
 	"net/url"
@@ -11,6 +9,8 @@ import (
 	"strconv"
 	"strings"
 
+	"google.golang.org/grpc"
+
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/security"
 )
@@ -52,7 +52,7 @@ func SubmitFiles(master string, grpcDialOption grpc.DialOption, files []FilePart
 	}
 	ret, err := Assign(master, grpcDialOption, ar)
 	if err != nil {
-		for index, _ := range files {
+		for index := range files {
 			results[index].Error = err.Error()
 		}
 		return results, err
@@ -214,12 +214,11 @@ func upload_chunked_file_manifest(fileUrl string, manifest *ChunkManifest, jwt s
 	if e != nil {
 		return e
 	}
-	bufReader := bytes.NewReader(buf)
 	glog.V(4).Info("Uploading chunks manifest ", manifest.Name, " to ", fileUrl, "...")
 	u, _ := url.Parse(fileUrl)
 	q := u.Query()
 	q.Set("cm", "true")
 	u.RawQuery = q.Encode()
-	_, e = Upload(u.String(), manifest.Name, false, bufReader, false, "application/json", nil, jwt)
+	_, e = UploadData(u.String(), manifest.Name, false, buf, false, "application/json", nil, jwt)
 	return e
 }
diff --git a/weed/operation/upload_content.go b/weed/operation/upload_content.go
index e27ff4da7..a83317975 100644
--- a/weed/operation/upload_content.go
+++ b/weed/operation/upload_content.go
@@ -3,7 +3,7 @@ package operation
 import (
 	"bytes"
 	"compress/flate"
-	"compress/gzip"
+	"crypto/md5"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -28,6 +28,8 @@ type UploadResult struct {
 	ETag      string `json:"eTag,omitempty"`
 	CipherKey []byte `json:"cipherKey,omitempty"`
 	Mime      string `json:"mime,omitempty"`
+	Gzip      uint32 `json:"gzip,omitempty"`
+	Md5       string `json:"md5,omitempty"`
 }
 
 var (
@@ -43,22 +45,28 @@ func init() {
 var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"")
 
 // Upload sends a POST request to a volume server to upload the content with adjustable compression level
-func UploadWithLocalCompressionLevel(uploadUrl string, filename string, cipher bool, reader io.Reader, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt, compressionLevel int) (*UploadResult, error) {
-	if compressionLevel < 1 {
-		compressionLevel = 1
+func UploadData(uploadUrl string, filename string, cipher bool, data []byte, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error) {
+	hash := md5.New()
+	hash.Write(data)
+	uploadResult, err = doUploadData(uploadUrl, filename, cipher, data, isInputGzipped, mtype, pairMap, jwt)
+	if uploadResult != nil {
+		uploadResult.Md5 = fmt.Sprintf("%x", hash.Sum(nil))
 	}
-	if compressionLevel > 9 {
-		compressionLevel = 9
-	}
-	return doUpload(uploadUrl, filename, cipher, reader, isInputGzipped, mtype, pairMap, compressionLevel, jwt)
+	return
 }
 
 // Upload sends a POST request to a volume server to upload the content with fast compression
-func Upload(uploadUrl string, filename string, cipher bool, reader io.Reader, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (*UploadResult, error) {
-	return doUpload(uploadUrl, filename, cipher, reader, isInputGzipped, mtype, pairMap, flate.BestSpeed, jwt)
+func Upload(uploadUrl string, filename string, cipher bool, reader io.Reader, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error) {
+	hash := md5.New()
+	reader = io.TeeReader(reader, hash)
+	uploadResult, err = doUpload(uploadUrl, filename, cipher, reader, isInputGzipped, mtype, pairMap, flate.BestSpeed, jwt)
+	if uploadResult != nil {
+		uploadResult.Md5 = fmt.Sprintf("%x", hash.Sum(nil))
+	}
+	return
 }
 
-func doUpload(uploadUrl string, filename string, cipher bool, reader io.Reader, isInputGzipped bool, mtype string, pairMap map[string]string, compression int, jwt security.EncodedJwt) (*UploadResult, error) {
+func doUploadData(uploadUrl string, filename string, cipher bool, data []byte, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error) {
 	contentIsGzipped := isInputGzipped
 	shouldGzipNow := false
 	if !isInputGzipped {
@@ -67,33 +75,131 @@ func doUpload(uploadUrl string, filename string, cipher bool, reader io.Reader,
 			contentIsGzipped = true
 		}
 	}
-	// encrypt data
-	var cipherKey util.CipherKey
+
 	var clearDataLen int
-	var err error
-	if cipher {
-		cipherKey, reader, clearDataLen, _, err = util.EncryptReader(reader)
-		if err != nil {
-			return nil, err
+
+	// gzip if possible
+	// this could be double copying
+	clearDataLen = len(data)
+	if shouldGzipNow {
+		data, err = util.GzipData(data)
+	} else if isInputGzipped {
+		// just to get the clear data length
+		clearData, err := util.UnGzipData(data)
+		if err == nil {
+			clearDataLen = len(clearData)
 		}
 	}
 
-	// upload data
-	uploadResult, err := upload_content(uploadUrl, func(w io.Writer) (err error) {
-		if shouldGzipNow {
-			gzWriter, _ := gzip.NewWriterLevel(w, compression)
-			_, err = io.Copy(gzWriter, reader)
-			gzWriter.Close()
-		} else {
-			_, err = io.Copy(w, reader)
-		}
-		return
-	}, filename, contentIsGzipped, mtype, pairMap, jwt)
+	if cipher {
+		// encrypt(gzip(data))
 
-	// remember cipher key
-	if uploadResult != nil && cipherKey != nil {
-		uploadResult.CipherKey = cipherKey
-		uploadResult.Size = uint32(clearDataLen)
+		// encrypt
+		cipherKey := util.GenCipherKey()
+		encryptedData, encryptionErr := util.Encrypt(data, cipherKey)
+		if encryptionErr != nil {
+			err = fmt.Errorf("encrypt input: %v", encryptionErr)
+			return
+		}
+
+		// upload data
+		uploadResult, err = upload_content(uploadUrl, func(w io.Writer) (err error) {
+			_, err = w.Write(encryptedData)
+			return
+		}, "", false, "", nil, jwt)
+		if uploadResult != nil {
+			uploadResult.Name = filename
+			uploadResult.Mime = mtype
+			uploadResult.CipherKey = cipherKey
+		}
+	} else {
+		// upload data
+		uploadResult, err = upload_content(uploadUrl, func(w io.Writer) (err error) {
+			_, err = w.Write(data)
+			return
+		}, filename, contentIsGzipped, mtype, pairMap, jwt)
+	}
+
+	uploadResult.Size = uint32(clearDataLen)
+	if contentIsGzipped {
+		uploadResult.Gzip = 1
+	}
+
+	return uploadResult, err
+}
+
+func doUpload(uploadUrl string, filename string, cipher bool, reader io.Reader, isInputGzipped bool, mtype string, pairMap map[string]string, compression int, jwt security.EncodedJwt) (uploadResult *UploadResult, err error) {
+	contentIsGzipped := isInputGzipped
+	shouldGzipNow := false
+	if !isInputGzipped {
+		if shouldBeZipped, iAmSure := util.IsGzippableFileType(filepath.Base(filename), mtype); mtype == "" || iAmSure && shouldBeZipped {
+			shouldGzipNow = true
+			contentIsGzipped = true
+		}
+	}
+
+	var clearDataLen int
+
+	// gzip if possible
+	// this could be double copying
+	data, readErr := ioutil.ReadAll(reader)
+	if readErr != nil {
+		err = fmt.Errorf("read input: %v", readErr)
+		return
+	}
+	clearDataLen = len(data)
+	if shouldGzipNow {
+		data, err = util.GzipData(data)
+	} else if isInputGzipped {
+		// just to get the clear data length
+		clearData, err := util.UnGzipData(data)
+		if err == nil {
+			clearDataLen = len(clearData)
+		}
+	}
+
+	println("data size", clearDataLen)
+
+	if cipher {
+		// encrypt(gzip(data))
+
+		// encrypt
+		cipherKey := util.GenCipherKey()
+		encryptedData, encryptionErr := util.Encrypt(data, cipherKey)
+		if encryptionErr != nil {
+			err = fmt.Errorf("encrypt input: %v", encryptionErr)
+			return
+		}
+		println("encrypted data size", len(encryptedData))
+
+		// upload data
+		uploadResult, err = upload_content(uploadUrl, func(w io.Writer) (err error) {
+			n, err := w.Write(encryptedData)
+			println("writtern data size", n)
+			return
+		}, "", false, "", nil, jwt)
+		if uploadResult != nil {
+			uploadResult.Name = filename
+			uploadResult.Mime = mtype
+			uploadResult.CipherKey = cipherKey
+			uploadResult.Size = uint32(clearDataLen)
+		}
+	} else {
+		// upload data
+		uploadResult, err = upload_content(uploadUrl, func(w io.Writer) (err error) {
+			n, err := w.Write(data)
+			println("written data size", n)
+			return
+		}, filename, contentIsGzipped, mtype, pairMap, jwt)
+	}
+
+	if uploadResult == nil {
+		return
+	}
+
+	uploadResult.Size = uint32(clearDataLen)
+	if contentIsGzipped {
+		uploadResult.Gzip = 1
 	}
 
 	return uploadResult, err
diff --git a/weed/pb/filer.proto b/weed/pb/filer.proto
index 5983c84d8..8df46e917 100644
--- a/weed/pb/filer.proto
+++ b/weed/pb/filer.proto
@@ -100,6 +100,7 @@ message FileChunk {
     FileId fid = 7;
     FileId source_fid = 8;
     bytes cipher_key = 9;
+    bool is_gzipped = 10;
 }
 
 message FileId {
diff --git a/weed/pb/filer_pb/filer.pb.go b/weed/pb/filer_pb/filer.pb.go
index 92a12321c..9cf659ece 100644
--- a/weed/pb/filer_pb/filer.pb.go
+++ b/weed/pb/filer_pb/filer.pb.go
@@ -288,6 +288,7 @@ type FileChunk struct {
 	Fid          *FileId `protobuf:"bytes,7,opt,name=fid" json:"fid,omitempty"`
 	SourceFid    *FileId `protobuf:"bytes,8,opt,name=source_fid,json=sourceFid" json:"source_fid,omitempty"`
 	CipherKey    []byte  `protobuf:"bytes,9,opt,name=cipher_key,json=cipherKey,proto3" json:"cipher_key,omitempty"`
+	IsGzipped    bool    `protobuf:"varint,10,opt,name=is_gzipped,json=isGzipped" json:"is_gzipped,omitempty"`
 }
 
 func (m *FileChunk) Reset()                    { *m = FileChunk{} }
@@ -358,6 +359,13 @@ func (m *FileChunk) GetCipherKey() []byte {
 	return nil
 }
 
+func (m *FileChunk) GetIsGzipped() bool {
+	if m != nil {
+		return m.IsGzipped
+	}
+	return false
+}
+
 type FileId struct {
 	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
 	FileKey  uint64 `protobuf:"varint,2,opt,name=file_key,json=fileKey" json:"file_key,omitempty"`
@@ -1610,114 +1618,115 @@ var _SeaweedFiler_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("filer.proto", fileDescriptor0) }
 
 var fileDescriptor0 = []byte{
-	// 1742 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xb4, 0x58, 0x4f, 0x6f, 0xdc, 0xc6,
-	0x15, 0x37, 0xf7, 0x3f, 0xdf, 0xee, 0x3a, 0xd2, 0xac, 0x9c, 0xac, 0xd7, 0x92, 0xab, 0xd0, 0x75,
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 }
diff --git a/weed/pb/master_pb/master.pb.go b/weed/pb/master_pb/master.pb.go
index 95c9533a1..c33e2b768 100644
--- a/weed/pb/master_pb/master.pb.go
+++ b/weed/pb/master_pb/master.pb.go
@@ -428,12 +428,10 @@ type VolumeEcShardInformationMessage struct {
 	EcIndexBits uint32 `protobuf:"varint,3,opt,name=ec_index_bits,json=ecIndexBits" json:"ec_index_bits,omitempty"`
 }
 
-func (m *VolumeEcShardInformationMessage) Reset()         { *m = VolumeEcShardInformationMessage{} }
-func (m *VolumeEcShardInformationMessage) String() string { return proto.CompactTextString(m) }
-func (*VolumeEcShardInformationMessage) ProtoMessage()    {}
-func (*VolumeEcShardInformationMessage) Descriptor() ([]byte, []int) {
-	return fileDescriptor0, []int{4}
-}
+func (m *VolumeEcShardInformationMessage) Reset()                    { *m = VolumeEcShardInformationMessage{} }
+func (m *VolumeEcShardInformationMessage) String() string            { return proto.CompactTextString(m) }
+func (*VolumeEcShardInformationMessage) ProtoMessage()               {}
+func (*VolumeEcShardInformationMessage) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
 
 func (m *VolumeEcShardInformationMessage) GetId() uint32 {
 	if m != nil {
@@ -1424,12 +1422,10 @@ type GetMasterConfigurationResponse struct {
 	MetricsIntervalSeconds uint32 `protobuf:"varint,2,opt,name=metrics_interval_seconds,json=metricsIntervalSeconds" json:"metrics_interval_seconds,omitempty"`
 }
 
-func (m *GetMasterConfigurationResponse) Reset()         { *m = GetMasterConfigurationResponse{} }
-func (m *GetMasterConfigurationResponse) String() string { return proto.CompactTextString(m) }
-func (*GetMasterConfigurationResponse) ProtoMessage()    {}
-func (*GetMasterConfigurationResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor0, []int{32}
-}
+func (m *GetMasterConfigurationResponse) Reset()                    { *m = GetMasterConfigurationResponse{} }
+func (m *GetMasterConfigurationResponse) String() string            { return proto.CompactTextString(m) }
+func (*GetMasterConfigurationResponse) ProtoMessage()               {}
+func (*GetMasterConfigurationResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{32} }
 
 func (m *GetMasterConfigurationResponse) GetMetricsAddress() string {
 	if m != nil {
diff --git a/weed/pb/volume_server_pb/volume_server.pb.go b/weed/pb/volume_server_pb/volume_server.pb.go
index 588b18f2e..56baa0cf7 100644
--- a/weed/pb/volume_server_pb/volume_server.pb.go
+++ b/weed/pb/volume_server_pb/volume_server.pb.go
@@ -1035,12 +1035,10 @@ func (m *VolumeEcShardsGenerateRequest) GetCollection() string {
 type VolumeEcShardsGenerateResponse struct {
 }
 
-func (m *VolumeEcShardsGenerateResponse) Reset()         { *m = VolumeEcShardsGenerateResponse{} }
-func (m *VolumeEcShardsGenerateResponse) String() string { return proto.CompactTextString(m) }
-func (*VolumeEcShardsGenerateResponse) ProtoMessage()    {}
-func (*VolumeEcShardsGenerateResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor0, []int{41}
-}
+func (m *VolumeEcShardsGenerateResponse) Reset()                    { *m = VolumeEcShardsGenerateResponse{} }
+func (m *VolumeEcShardsGenerateResponse) String() string            { return proto.CompactTextString(m) }
+func (*VolumeEcShardsGenerateResponse) ProtoMessage()               {}
+func (*VolumeEcShardsGenerateResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{41} }
 
 type VolumeEcShardsRebuildRequest struct {
 	VolumeId   uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
@@ -1413,12 +1411,10 @@ func (m *VolumeEcShardsToVolumeRequest) GetCollection() string {
 type VolumeEcShardsToVolumeResponse struct {
 }
 
-func (m *VolumeEcShardsToVolumeResponse) Reset()         { *m = VolumeEcShardsToVolumeResponse{} }
-func (m *VolumeEcShardsToVolumeResponse) String() string { return proto.CompactTextString(m) }
-func (*VolumeEcShardsToVolumeResponse) ProtoMessage()    {}
-func (*VolumeEcShardsToVolumeResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor0, []int{57}
-}
+func (m *VolumeEcShardsToVolumeResponse) Reset()                    { *m = VolumeEcShardsToVolumeResponse{} }
+func (m *VolumeEcShardsToVolumeResponse) String() string            { return proto.CompactTextString(m) }
+func (*VolumeEcShardsToVolumeResponse) ProtoMessage()               {}
+func (*VolumeEcShardsToVolumeResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{57} }
 
 type ReadVolumeFileStatusRequest struct {
 	VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
@@ -2085,10 +2081,8 @@ type QueryRequest_InputSerialization_JSONInput struct {
 func (m *QueryRequest_InputSerialization_JSONInput) Reset() {
 	*m = QueryRequest_InputSerialization_JSONInput{}
 }
-func (m *QueryRequest_InputSerialization_JSONInput) String() string {
-	return proto.CompactTextString(m)
-}
-func (*QueryRequest_InputSerialization_JSONInput) ProtoMessage() {}
+func (m *QueryRequest_InputSerialization_JSONInput) String() string { return proto.CompactTextString(m) }
+func (*QueryRequest_InputSerialization_JSONInput) ProtoMessage()    {}
 func (*QueryRequest_InputSerialization_JSONInput) Descriptor() ([]byte, []int) {
 	return fileDescriptor0, []int{70, 1, 1}
 }
diff --git a/weed/replication/sink/azuresink/azure_sink.go b/weed/replication/sink/azuresink/azure_sink.go
index 66e7b9c3e..89e04922f 100644
--- a/weed/replication/sink/azuresink/azure_sink.go
+++ b/weed/replication/sink/azuresink/azure_sink.go
@@ -115,7 +115,7 @@ func (g *AzureSink) CreateEntry(key string, entry *filer_pb.Entry) error {
 		}
 
 		var writeErr error
-		readErr := util.ReadUrlAsStream(fileUrl, nil, chunk.IsFullChunk, chunk.Offset, int(chunk.Size), func(data []byte) {
+		readErr := util.ReadUrlAsStream(fileUrl, nil, false, chunk.IsFullChunk, chunk.Offset, int(chunk.Size), func(data []byte) {
 			_, writeErr = appendBlobURL.AppendBlock(context.Background(), bytes.NewReader(data), azblob.AppendBlobAccessConditions{}, nil)
 		})
 
diff --git a/weed/replication/sink/b2sink/b2_sink.go b/weed/replication/sink/b2sink/b2_sink.go
index 0f8313638..df0653f73 100644
--- a/weed/replication/sink/b2sink/b2_sink.go
+++ b/weed/replication/sink/b2sink/b2_sink.go
@@ -103,7 +103,7 @@ func (g *B2Sink) CreateEntry(key string, entry *filer_pb.Entry) error {
 		}
 
 		var writeErr error
-		readErr := util.ReadUrlAsStream(fileUrl, nil, chunk.IsFullChunk, chunk.Offset, int(chunk.Size), func(data []byte) {
+		readErr := util.ReadUrlAsStream(fileUrl, nil, false, chunk.IsFullChunk, chunk.Offset, int(chunk.Size), func(data []byte) {
 			_, err := writer.Write(data)
 			if err != nil {
 				writeErr = err
diff --git a/weed/replication/sink/filersink/fetch_write.go b/weed/replication/sink/filersink/fetch_write.go
index 512fbd46b..07218b9b3 100644
--- a/weed/replication/sink/filersink/fetch_write.go
+++ b/weed/replication/sink/filersink/fetch_write.go
@@ -51,6 +51,7 @@ func (fs *FilerSink) replicateOneChunk(sourceChunk *filer_pb.FileChunk, dir stri
 		ETag:         sourceChunk.ETag,
 		SourceFileId: sourceChunk.GetFileIdString(),
 		CipherKey:    sourceChunk.CipherKey,
+		IsGzipped:    sourceChunk.IsGzipped,
 	}, nil
 }
 
diff --git a/weed/replication/sink/gcssink/gcs_sink.go b/weed/replication/sink/gcssink/gcs_sink.go
index dd8567e0e..694399274 100644
--- a/weed/replication/sink/gcssink/gcs_sink.go
+++ b/weed/replication/sink/gcssink/gcs_sink.go
@@ -101,7 +101,7 @@ func (g *GcsSink) CreateEntry(key string, entry *filer_pb.Entry) error {
 			return err
 		}
 
-		err = util.ReadUrlAsStream(fileUrl, nil, chunk.IsFullChunk, chunk.Offset, int(chunk.Size), func(data []byte) {
+		err = util.ReadUrlAsStream(fileUrl, nil, false, chunk.IsFullChunk, chunk.Offset, int(chunk.Size), func(data []byte) {
 			wc.Write(data)
 		})
 
diff --git a/weed/replication/sink/s3sink/s3_write.go b/weed/replication/sink/s3sink/s3_write.go
index dcc041642..854688b1e 100644
--- a/weed/replication/sink/s3sink/s3_write.go
+++ b/weed/replication/sink/s3sink/s3_write.go
@@ -162,6 +162,6 @@ func (s3sink *S3Sink) buildReadSeeker(chunk *filer2.ChunkView) (io.ReadSeeker, e
 		return nil, err
 	}
 	buf := make([]byte, chunk.Size)
-	util.ReadUrl(fileUrl, nil, false, chunk.Offset, int(chunk.Size), buf)
+	util.ReadUrl(fileUrl, nil, false,false, chunk.Offset, int(chunk.Size), buf)
 	return bytes.NewReader(buf), nil
 }
diff --git a/weed/server/common.go b/weed/server/common.go
index 5904e2c47..e06142d7f 100644
--- a/weed/server/common.go
+++ b/weed/server/common.go
@@ -1,7 +1,6 @@
 package weed_server
 
 import (
-	"bytes"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -136,7 +135,7 @@ func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterUrl st
 	}
 
 	debug("upload file to store", url)
-	uploadResult, err := operation.Upload(url, pu.FileName, false, bytes.NewReader(pu.Data), pu.IsGzipped, pu.MimeType, pu.PairMap, assignResult.Auth)
+	uploadResult, err := operation.UploadData(url, pu.FileName, false, pu.Data, pu.IsGzipped, pu.MimeType, pu.PairMap, assignResult.Auth)
 	if err != nil {
 		writeJsonError(w, r, http.StatusInternalServerError, err)
 		return
diff --git a/weed/server/filer_server_handlers_write_autochunk.go b/weed/server/filer_server_handlers_write_autochunk.go
index 641a367b1..bce3c78bc 100644
--- a/weed/server/filer_server_handlers_write_autochunk.go
+++ b/weed/server/filer_server_handlers_write_autochunk.go
@@ -2,6 +2,7 @@ package weed_server
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"net/http"
 	"path"
@@ -87,6 +88,9 @@ func (fs *FilerServer) doAutoChunk(ctx context.Context, w http.ResponseWriter, r
 	if fileName != "" {
 		fileName = path.Base(fileName)
 	}
+	contentType := part1.Header.Get("Content-Type")
+
+	fmt.Printf("autochunk part header: %+v\n", part1.Header)
 
 	var fileChunks []*filer_pb.FileChunk
 
@@ -102,7 +106,7 @@ func (fs *FilerServer) doAutoChunk(ctx context.Context, w http.ResponseWriter, r
 		}
 
 		// upload the chunk to the volume server
-		uploadResult, uploadErr := fs.doUpload(urlLocation, w, r, limitedReader, "", "", nil, auth)
+		uploadResult, uploadErr := fs.doUpload(urlLocation, w, r, limitedReader, fileName, contentType, nil, auth)
 		if uploadErr != nil {
 			return nil, uploadErr
 		}
@@ -121,6 +125,7 @@ func (fs *FilerServer) doAutoChunk(ctx context.Context, w http.ResponseWriter, r
 				Mtime:     time.Now().UnixNano(),
 				ETag:      uploadResult.ETag,
 				CipherKey: uploadResult.CipherKey,
+				IsGzipped: uploadResult.Gzip > 0,
 			},
 		)
 
@@ -154,6 +159,7 @@ func (fs *FilerServer) doAutoChunk(ctx context.Context, w http.ResponseWriter, r
 			Replication: replication,
 			Collection:  collection,
 			TtlSec:      int32(util.ParseInt(r.URL.Query().Get("ttl"), 0)),
+			Mime:        contentType,
 		},
 		Chunks: fileChunks,
 	}
diff --git a/weed/server/filer_server_handlers_write_cipher.go b/weed/server/filer_server_handlers_write_cipher.go
index bd2b52fb3..3aebc4b61 100644
--- a/weed/server/filer_server_handlers_write_cipher.go
+++ b/weed/server/filer_server_handlers_write_cipher.go
@@ -1,7 +1,6 @@
 package weed_server
 
 import (
-	"bytes"
 	"context"
 	"fmt"
 	"net/http"
@@ -28,7 +27,7 @@ func (fs *FilerServer) encrypt(ctx context.Context, w http.ResponseWriter, r *ht
 
 	glog.V(4).Infof("write %s to %v", r.URL.Path, urlLocation)
 
-	// Note: gzip(cipher(data)), cipher data first, then gzip
+	// Note: encrypt(gzip(data)), encrypt data first, then gzip
 
 	sizeLimit := int64(fs.option.MaxMB) * 1024 * 1024
 
@@ -41,7 +40,7 @@ func (fs *FilerServer) encrypt(ctx context.Context, w http.ResponseWriter, r *ht
 		pu.MimeType = http.DetectContentType(uncompressedData)
 	}
 
-	uploadResult, uploadError := operation.Upload(urlLocation, pu.FileName, true, bytes.NewReader(uncompressedData), false, pu.MimeType, pu.PairMap, auth)
+	uploadResult, uploadError := operation.UploadData(urlLocation, pu.FileName, true, uncompressedData, false, pu.MimeType, pu.PairMap, auth)
 	if uploadError != nil {
 		return nil, fmt.Errorf("upload to volume server: %v", uploadError)
 	}
@@ -53,11 +52,14 @@ func (fs *FilerServer) encrypt(ctx context.Context, w http.ResponseWriter, r *ht
 			Offset:    0,
 			Size:      uint64(uploadResult.Size),
 			Mtime:     time.Now().UnixNano(),
-			ETag:      uploadResult.ETag,
+			ETag:      uploadResult.Md5,
 			CipherKey: uploadResult.CipherKey,
+			IsGzipped: uploadResult.Gzip > 0,
 		},
 	}
 
+	fmt.Printf("uploaded: %+v\n", uploadResult)
+
 	path := r.URL.Path
 	if strings.HasSuffix(path, "/") {
 		if pu.FileName != "" {
diff --git a/weed/server/webdav_server.go b/weed/server/webdav_server.go
index 9451fdf99..1fb0912c5 100644
--- a/weed/server/webdav_server.go
+++ b/weed/server/webdav_server.go
@@ -1,7 +1,6 @@
 package weed_server
 
 import (
-	"bytes"
 	"context"
 	"fmt"
 	"io"
@@ -418,8 +417,7 @@ func (f *WebDavFile) Write(buf []byte) (int, error) {
 	}
 
 	fileUrl := fmt.Sprintf("http://%s/%s", host, fileId)
-	bufReader := bytes.NewReader(buf)
-	uploadResult, err := operation.Upload(fileUrl, f.name, f.fs.option.Cipher, bufReader, false, "", nil, auth)
+	uploadResult, err := operation.UploadData(fileUrl, f.name, f.fs.option.Cipher, buf, false, "", nil, auth)
 	if err != nil {
 		glog.V(0).Infof("upload data %v to %s: %v", f.name, fileUrl, err)
 		return 0, fmt.Errorf("upload data: %v", err)
@@ -436,6 +434,7 @@ func (f *WebDavFile) Write(buf []byte) (int, error) {
 		Mtime:     time.Now().UnixNano(),
 		ETag:      uploadResult.ETag,
 		CipherKey: uploadResult.CipherKey,
+		IsGzipped: uploadResult.Gzip > 0,
 	}
 
 	f.entry.Chunks = append(f.entry.Chunks, chunk)
diff --git a/weed/topology/store_replicate.go b/weed/topology/store_replicate.go
index 332ec4d65..4acc71be5 100644
--- a/weed/topology/store_replicate.go
+++ b/weed/topology/store_replicate.go
@@ -1,7 +1,6 @@
 package topology
 
 import (
-	"bytes"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -73,7 +72,7 @@ func ReplicatedWrite(masterNode string, s *storage.Store,
 			}
 
 			// volume server do not know about encryption
-			_, err := operation.Upload(u.String(), string(n.Name), false, bytes.NewReader(n.Data), n.IsGzipped(), string(n.Mime), pairMap, jwt)
+			_, err := operation.UploadData(u.String(), string(n.Name), false, n.Data, n.IsGzipped(), string(n.Mime), pairMap, jwt)
 			return err
 		}); err != nil {
 			size = 0
diff --git a/weed/util/http_util.go b/weed/util/http_util.go
index 833db910c..750516b92 100644
--- a/weed/util/http_util.go
+++ b/weed/util/http_util.go
@@ -189,11 +189,11 @@ func NormalizeUrl(url string) string {
 	return "http://" + url
 }
 
-func ReadUrl(fileUrl string, cipherKey []byte, isFullChunk bool, offset int64, size int, buf []byte) (int64, error) {
+func ReadUrl(fileUrl string, cipherKey []byte, isGzipped bool, isFullChunk bool, offset int64, size int, buf []byte) (int64, error) {
 
 	if cipherKey != nil {
 		var n int
-		err := readEncryptedUrl(fileUrl, cipherKey, offset, size, func(data []byte) {
+		err := readEncryptedUrl(fileUrl, cipherKey, isGzipped, offset, size, func(data []byte) {
 			n = copy(buf, data)
 		})
 		return int64(n), err
@@ -258,10 +258,10 @@ func ReadUrl(fileUrl string, cipherKey []byte, isFullChunk bool, offset int64, s
 	return n, err
 }
 
-func ReadUrlAsStream(fileUrl string, cipherKey []byte, isFullChunk bool, offset int64, size int, fn func(data []byte)) error {
+func ReadUrlAsStream(fileUrl string, cipherKey []byte, isContentGzipped bool, isFullChunk bool, offset int64, size int, fn func(data []byte)) error {
 
 	if cipherKey != nil {
-		return readEncryptedUrl(fileUrl, cipherKey, offset, size, fn)
+		return readEncryptedUrl(fileUrl, cipherKey, isContentGzipped, offset, size, fn)
 	}
 
 	req, err := http.NewRequest("GET", fileUrl, nil)
@@ -300,7 +300,7 @@ func ReadUrlAsStream(fileUrl string, cipherKey []byte, isFullChunk bool, offset
 
 }
 
-func readEncryptedUrl(fileUrl string, cipherKey []byte, offset int64, size int, fn func(data []byte)) error {
+func readEncryptedUrl(fileUrl string, cipherKey []byte, isContentGzipped bool, offset int64, size int, fn func(data []byte)) error {
 	encryptedData, err := Get(fileUrl)
 	if err != nil {
 		return fmt.Errorf("fetch %s: %v", fileUrl, err)
@@ -309,6 +309,12 @@ func readEncryptedUrl(fileUrl string, cipherKey []byte, offset int64, size int,
 	if err != nil {
 		return fmt.Errorf("decrypt %s: %v", fileUrl, err)
 	}
+	if isContentGzipped {
+		decryptedData, err = UnGzipData(decryptedData)
+		if err != nil {
+			return fmt.Errorf("unzip decrypt %s: %v", fileUrl, err)
+		}
+	}
 	if len(decryptedData) < int(offset)+size {
 		return fmt.Errorf("read decrypted %s size %d [%d, %d)", fileUrl, len(decryptedData), offset, int(offset)+size)
 	}