adjust name

remove detecting ipv6
Got this error on my local: transport: Error while dialing dial tcp [fe80::1]:19333: connect: no route to host related to https://github.com/chrislusf/seaweedfs/pull/2310
2026-10-01 20:26:27 +00:00 · 2021-09-07 02:34:49 -07:00 · 2021-09-07 02:31:34 -07:00 · 2021-09-07 02:30:25 -07:00 · 2021-09-07 02:12:07 -07:00 · 2021-09-07 01:44:52 -07:00
382 changed files with 17669 additions and 7448 deletions
@@ -0,0 +1,62 @@
+name: "go: build dev binaries"
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+
+
+  build-latest-docker-image:
+    runs-on: [ubuntu-latest]
+
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Docker meta
+        id: docker_meta
+        uses: docker/metadata-action@v3
+        with:
+          images: |
+            chrislusf/seaweedfs
+            ghcr.io/chrislusf/seaweedfs
+          tags: |
+            type=raw,value=latest
+          labels: |
+            org.opencontainers.image.title=seaweedfs
+            org.opencontainers.image.vendor=Chris Lu
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          buildkitd-flags: "--debug"
+      -
+        name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      -
+        name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ secrets.GHCR_USERNAME }}
+          password: ${{ secrets.GHCR_TOKEN }}
+      -
+        name: Build
+        uses: docker/build-push-action@v2
+        with:
+          context: ./docker
+          push: ${{ github.event_name != 'pull_request' }}
+          file: ./docker/Dockerfile
+          platforms: linux/amd64, linux/arm, linux/arm64
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
@@ -0,0 +1,63 @@
+# This is a basic workflow to help you get started with Actions
+
+name: "go: build versioned binaries"
+
+on:
+  push:
+    tags:
+      - '*'
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+
+  build-release-binaries:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        goos: [linux, windows, darwin, freebsd]
+        goarch: [amd64, arm, arm64]
+        exclude:
+          - goarch: arm
+            goos: darwin
+          - goarch: 386
+            goos: darwin
+          - goarch: arm
+            goos: windows
+          - goarch: arm64
+            goos: windows
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+      - name: Go Release Binaries Normal Volume Size
+        uses: wangyoucao577/go-release-action@v1.20
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          goos: ${{ matrix.goos }}
+          goarch: ${{ matrix.goarch }}
+          overwrite: true
+          pre_command: export CGO_ENABLED=0
+          # build_flags: -tags 5BytesOffset # optional, default is
+          ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
+          # Where to run `go build .`
+          project_path: weed
+          binary_name: weed
+          asset_name: "${{ matrix.goos }}_${{ matrix.goarch }}"
+      - name: Go Release Large Disk Binaries
+        uses: wangyoucao577/go-release-action@v1.20
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          goos: ${{ matrix.goos }}
+          goarch: ${{ matrix.goarch }}
+          overwrite: true
+          pre_command: export CGO_ENABLED=0
+          build_flags: -tags 5BytesOffset # optional, default is
+          ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
+          # Where to run `go build .`
+          project_path: weed
+          binary_name: weed
+          asset_name: "${{ matrix.goos }}_${{ matrix.goarch }}_large_disk"
@@ -1,22 +0,0 @@
-name: Cleanup
-
-on:
-  push:
-    branches: [ master ]
-
-jobs:
-
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-
-    steps:
-
-      - name: Delete old release assets
-        uses: mknejp/delete-release-assets@v1
-        with:
-          token: ${{ github.token }}
-          tag: dev
-          fail-if-no-assets: false
-          assets: |
-            weed-*
@@ -0,0 +1,63 @@
+name: "docker: build dev containers"
+
+on:
+  push:
+    branches: [ master ]
+  workflow_dispatch: []
+
+jobs:
+
+  build-dev-containers:
+    runs-on: [ubuntu-latest]
+
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Docker meta
+        id: docker_meta
+        uses: docker/metadata-action@v3
+        with:
+          images: |
+            chrislusf/seaweedfs
+            ghcr.io/chrislusf/seaweedfs
+          tags: |
+            type=raw,value=dev
+          labels: |
+            org.opencontainers.image.title=seaweedfs
+            org.opencontainers.image.description=SeaweedFS is a distributed storage system for blobs, objects, files, and data lake, to store and serve billions of files fast!
+            org.opencontainers.image.vendor=Chris Lu
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          buildkitd-flags: "--debug"
+      -
+        name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      -
+        name: Login to GHCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ secrets.GHCR_USERNAME }}
+          password: ${{ secrets.GHCR_TOKEN }}
+      -
+        name: Build
+        uses: docker/build-push-action@v2
+        with:
+          context: ./docker
+          push: ${{ github.event_name != 'pull_request' }}
+          file: ./docker/Dockerfile.go_build
+          platforms: linux/amd64, linux/arm, linux/arm64, linux/386
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
@@ -1,66 +1,15 @@
-name: Build Latest Containers
+name: "docker: build latest container"
+
 on:
  push:
-    branches:
-      - master
+    branches: [ master ]
  workflow_dispatch: []

 jobs:
-  build-latest:
-    runs-on: [ubuntu-latest]
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v2
-      -
-        name: Docker meta
-        id: docker_meta
-        uses: crazy-max/ghaction-docker-meta@v2
-        with:
-          images: |
-            chrislusf/seaweedfs
-            ghcr.io/chrislusf/seaweedfs
-          tags: |
-            type=raw,value=latest
-          labels: |
-            org.opencontainers.image.title=seaweedfs
-            org.opencontainers.image.vendor=Chris Lu
-      -
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-        with:
-          buildkitd-flags: "--debug"
-      -
-        name: Login to Docker Hub
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@v1
-        with:
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-      -
-        name: Login to GHCR
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@v1
-        with:
-          registry: ghcr.io
-          username: ${{ secrets.GHCR_USERNAME }}
-          password: ${{ secrets.GHCR_TOKEN }}
-      -
-        name: Build
-        uses: docker/build-push-action@v2
-        with:
-          context: ./docker
-          push: ${{ github.event_name != 'pull_request' }}
-          file: ./docker/Dockerfile
-          platforms: linux/amd64
-          tags: ${{ steps.docker_meta.outputs.tags }}
-          labels: ${{ steps.docker_meta.outputs.labels }}

-  build-dev:
+  build-latest-container:
    runs-on: [ubuntu-latest]
+
    steps:
      -
        name: Checkout
@@ -68,7 +17,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: crazy-max/ghaction-docker-meta@v2
+        uses: docker/metadata-action@v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -109,6 +58,6 @@ jobs:
          context: ./docker
          push: ${{ github.event_name != 'pull_request' }}
          file: ./docker/Dockerfile.go_build
-          platforms: linux/amd64
+          platforms: linux/amd64, linux/arm, linux/arm64, linux/386
          tags: ${{ steps.docker_meta.outputs.tags }}
          labels: ${{ steps.docker_meta.outputs.labels }}
@@ -1,4 +1,5 @@
-name: Build Release Containers
+name: "docker: build release containers"
+
 on:
  push:
    tags:
@@ -6,8 +7,9 @@ on:
  workflow_dispatch: []

 jobs:
-  build-default:
+  build-default-release-container:
    runs-on: [ubuntu-latest]
+
    steps:
      -
        name: Checkout
@@ -15,7 +17,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: crazy-max/ghaction-docker-meta@v2
+        uses: docker/metadata-action@v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -58,11 +60,12 @@ jobs:
          context: ./docker
          push: ${{ github.event_name != 'pull_request' }}
          file: ./docker/Dockerfile.go_build
-          platforms: linux/amd64
+          platforms: linux/amd64, linux/arm, linux/arm64, linux/386
          tags: ${{ steps.docker_meta.outputs.tags }}
          labels: ${{ steps.docker_meta.outputs.labels }}
-  build-large:
+  build-large-release-container:
    runs-on: [ubuntu-latest]
+
    steps:
      -
        name: Checkout
@@ -70,7 +73,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: crazy-max/ghaction-docker-meta@v2
+        uses: docker/metadata-action@v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -113,6 +116,6 @@ jobs:
          context: ./docker
          push: ${{ github.event_name != 'pull_request' }}
          file: ./docker/Dockerfile.go_build_large
-          platforms: linux/amd64
+          platforms: linux/amd64, linux/arm, linux/arm64, linux/386
          tags: ${{ steps.docker_meta.outputs.tags }}
          labels: ${{ steps.docker_meta.outputs.labels }}
@@ -1,4 +1,4 @@
-name: Go
+name: "go: build binary"

 on:
  push:
@@ -6,6 +6,10 @@ on:
  pull_request:
    branches: [ master ]

+concurrency:
+  group: ${{ github.head_ref }}/go
+  cancel-in-progress: true
+
 jobs:

  build:
@@ -1,66 +0,0 @@
-name: Release
-
-on:
-  push:
-    branches: [ master ]
-
-jobs:
-
-  build:
-    name: Build
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        goos: [linux, windows, darwin, freebsd ]
-        goarch: [amd64, arm]
-        exclude:
-          - goarch: arm
-            goos: darwin
-          - goarch: arm
-            goos: windows
-
-    steps:
-
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
-
-      - name: Wait for the deletion
-        uses: jakejarvis/wait-action@master
-        with:
-          time: '30s'
-
-      - name: Set BUILD_TIME env
-        run: echo BUILD_TIME=$(date -u +%Y-%m-%d-%H-%M) >> ${GITHUB_ENV}
-
-      - name: Go Release Binaries
-        uses: wangyoucao577/go-release-action@v1.17
-        with:
-          goversion: 1.16
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          goos: ${{ matrix.goos }}
-          goarch: ${{ matrix.goarch }}
-          release_tag: dev
-          overwrite: true
-          pre_command: export CGO_ENABLED=0
-          build_flags: -tags 5BytesOffset # optional, default is
-          ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
-          # Where to run `go build .`
-          project_path: weed
-          binary_name: weed-large-disk
-          asset_name: "weed-large-disk-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"
-
-      - name: Go Release Binaries
-        uses: wangyoucao577/go-release-action@v1.17
-        with:
-          goversion: 1.16
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          goos: ${{ matrix.goos }}
-          goarch: ${{ matrix.goarch }}
-          release_tag: dev
-          overwrite: true
-          pre_command: export CGO_ENABLED=0
-          ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
-          # Where to run `go build .`
-          project_path: weed
-          binary_name: weed
-          asset_name: "weed-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"
@@ -1,46 +0,0 @@
-sudo: false
-language: go
-go:
-  - 1.16.x
-
-before_install:
-  - export PATH=/home/travis/gopath/bin:$PATH
-
-install:
-  - export CGO_ENABLED="0"
-  - go env
-
-script:
-  - env GO111MODULE=on go test ./weed/...
-
-before_deploy:
-  - make release
-deploy:
-  provider: releases
-  skip_cleanup: true
-  api_key:
-    secure: ERL986+ncQ8lwAJUYDrQ8s2/FxF/cyNIwJIFCqspnWxQgGNNyokET9HapmlPSxjpFRF0q6L2WCg9OY3mSVRq4oI6hg1igOQ12KlLyN71XSJ3c8w0Ay5ho48TQ9l3f3Iu97mntBCe9l0R9pnT8wj1VI8YJxloXwUMG2yeTjA9aBI=
-  file:
-    - build/linux_arm.tar.gz
-    - build/linux_arm64.tar.gz
-    - build/linux_386.tar.gz
-    - build/linux_amd64.tar.gz
-    - build/linux_amd64_large_disk.tar.gz
-    - build/darwin_amd64.tar.gz
-    - build/darwin_amd64_large_disk.tar.gz
-    - build/windows_386.zip
-    - build/windows_amd64.zip
-    - build/windows_amd64_large_disk.zip
-    - build/freebsd_arm.tar.gz
-    - build/freebsd_amd64.tar.gz
-    - build/freebsd_386.tar.gz
-    - build/netbsd_arm.tar.gz
-    - build/netbsd_amd64.tar.gz
-    - build/netbsd_386.tar.gz
-    - build/openbsd_arm.tar.gz
-    - build/openbsd_amd64.tar.gz
-    - build/openbsd_386.tar.gz
-  on:
-    tags: true
-    repo: chrislusf/seaweedfs
-    go: 1.16.x
@@ -1,144 +0,0 @@
-BINARY = weed/weed
-package = github.com/chrislusf/seaweedfs/weed
-
-GO_FLAGS = #-v
-SOURCE_DIR = ./weed/
-
-appname := weed
-
-sources := $(wildcard *.go)
-
-COMMIT ?= $(shell git rev-parse --short HEAD)
-LDFLAGS ?= -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${COMMIT}
-
-build = CGO_ENABLED=0 GOOS=$(1) GOARCH=$(2) go build -ldflags "-extldflags -static $(LDFLAGS)" -o build/$(appname)$(3) $(SOURCE_DIR)
-tar = cd build && tar -cvzf $(1)_$(2).tar.gz $(appname)$(3) && rm $(appname)$(3)
-zip = cd build && zip $(1)_$(2).zip $(appname)$(3) && rm $(appname)$(3)
-
-build_large = CGO_ENABLED=0 GOOS=$(1) GOARCH=$(2) go build -tags 5BytesOffset -ldflags "-extldflags -static $(LDFLAGS)" -o build/$(appname)$(3) $(SOURCE_DIR)
-tar_large = cd build && tar -cvzf $(1)_$(2)_large_disk.tar.gz $(appname)$(3) && rm $(appname)$(3)
-zip_large = cd build && zip $(1)_$(2)_large_disk.zip $(appname)$(3) && rm $(appname)$(3)
-
-all: build
-
-.PHONY : clean deps build linux release windows_build darwin_build linux_build bsd_build clean
-
-clean:
-	go clean -i $(GO_FLAGS) $(SOURCE_DIR)
-	rm -f $(BINARY)
-	rm -rf build/
-
-deps:
-	go get $(GO_FLAGS) -d $(SOURCE_DIR)
-	rm -rf /home/travis/gopath/src/github.com/coreos/etcd/vendor/golang.org/x/net/trace
-	rm -rf /home/travis/gopath/src/go.etcd.io/etcd/vendor/golang.org/x/net/trace
-
-build: deps
-	go build $(GO_FLAGS) -ldflags "$(LDFLAGS)" -o $(BINARY) $(SOURCE_DIR)
-
-install: deps
-	go install $(GO_FLAGS) -ldflags "$(LDFLAGS)" $(SOURCE_DIR)
-
-linux: deps
-	mkdir -p linux
-	GOOS=linux GOARCH=amd64 go build $(GO_FLAGS) -ldflags "$(LDFLAGS)" -o linux/$(BINARY) $(SOURCE_DIR)
-
-release: deps windows_build darwin_build linux_build bsd_build 5_byte_linux_build 5_byte_arm64_build 5_byte_darwin_build 5_byte_windows_build
-
-##### LINUX BUILDS #####
-5_byte_linux_build:
-	$(call build_large,linux,amd64,)
-	$(call tar_large,linux,amd64)
-
-5_byte_darwin_build:
-	$(call build_large,darwin,amd64,)
-	$(call tar_large,darwin,amd64)
-
-5_byte_windows_build:
-	$(call build_large,windows,amd64,.exe)
-	$(call zip_large,windows,amd64,.exe)
-
-5_byte_arm_build: $(sources)
-	$(call build_large,linux,arm,)
-	$(call tar_large,linux,arm)
-
-5_byte_arm64_build: $(sources)
-	$(call build_large,linux,arm64,)
-	$(call tar_large,linux,arm64)
-
-linux_build: build/linux_arm.tar.gz build/linux_arm64.tar.gz build/linux_386.tar.gz build/linux_amd64.tar.gz
-
-build/linux_386.tar.gz: $(sources)
-	$(call build,linux,386,)
-	$(call tar,linux,386)
-
-build/linux_amd64.tar.gz: $(sources)
-	$(call build,linux,amd64,)
-	$(call tar,linux,amd64)
-
-build/linux_arm.tar.gz: $(sources)
-	$(call build,linux,arm,)
-	$(call tar,linux,arm)
-
-build/linux_arm64.tar.gz: $(sources)
-	$(call build,linux,arm64,)
-	$(call tar,linux,arm64)
-
-##### DARWIN (MAC) BUILDS #####
-darwin_build: build/darwin_amd64.tar.gz
-
-build/darwin_amd64.tar.gz: $(sources)
-	$(call build,darwin,amd64,)
-	$(call tar,darwin,amd64)
-
-##### WINDOWS BUILDS #####
-windows_build: build/windows_386.zip build/windows_amd64.zip
-
-build/windows_386.zip: $(sources)
-	$(call build,windows,386,.exe)
-	$(call zip,windows,386,.exe)
-
-build/windows_amd64.zip: $(sources)
-	$(call build,windows,amd64,.exe)
-	$(call zip,windows,amd64,.exe)
-
-##### BSD BUILDS #####
-bsd_build: build/freebsd_arm.tar.gz build/freebsd_386.tar.gz build/freebsd_amd64.tar.gz \
- build/netbsd_arm.tar.gz build/netbsd_386.tar.gz build/netbsd_amd64.tar.gz \
- build/openbsd_arm.tar.gz build/openbsd_386.tar.gz build/openbsd_amd64.tar.gz
-
-build/freebsd_386.tar.gz: $(sources)
-	$(call build,freebsd,386,)
-	$(call tar,freebsd,386)
-
-build/freebsd_amd64.tar.gz: $(sources)
-	$(call build,freebsd,amd64,)
-	$(call tar,freebsd,amd64)
-
-build/freebsd_arm.tar.gz: $(sources)
-	$(call build,freebsd,arm,)
-	$(call tar,freebsd,arm)
-
-build/netbsd_386.tar.gz: $(sources)
-	$(call build,netbsd,386,)
-	$(call tar,netbsd,386)
-
-build/netbsd_amd64.tar.gz: $(sources)
-	$(call build,netbsd,amd64,)
-	$(call tar,netbsd,amd64)
-
-build/netbsd_arm.tar.gz: $(sources)
-	$(call build,netbsd,arm,)
-	$(call tar,netbsd,arm)
-
-build/openbsd_386.tar.gz: $(sources)
-	$(call build,openbsd,386,)
-	$(call tar,openbsd,386)
-
-build/openbsd_amd64.tar.gz: $(sources)
-	$(call build,openbsd,amd64,)
-	$(call tar,openbsd,amd64)
-
-build/openbsd_arm.tar.gz: $(sources)
-	$(call build,openbsd,arm,)
-	$(call tar,openbsd,arm)
@@ -3,10 +3,10 @@

 [![Slack](https://img.shields.io/badge/slack-purple)](https://join.slack.com/t/seaweedfs/shared_invite/enQtMzI4MTMwMjU2MzA3LTEyYzZmZWYzOGQ3MDJlZWMzYmI0OTE4OTJiZjJjODBmMzUxNmYwODg0YjY3MTNlMjBmZDQ1NzQ5NDJhZWI2ZmY)
 [![Twitter](https://img.shields.io/twitter/follow/seaweedfs.svg?style=social&label=Follow)](https://twitter.com/intent/follow?screen_name=seaweedfs)
-[![Build Status](https://travis-ci.org/chrislusf/seaweedfs.svg?branch=master)](https://travis-ci.org/chrislusf/seaweedfs)
+[![Build Status](https://img.shields.io/github/workflow/status/chrislusf/seaweedfs/Go)](https://github.com/chrislusf/seaweedfs/actions/workflows/go.yml)
 [![GoDoc](https://godoc.org/github.com/chrislusf/seaweedfs/weed?status.svg)](https://godoc.org/github.com/chrislusf/seaweedfs/weed)
 [![Wiki](https://img.shields.io/badge/docs-wiki-blue.svg)](https://github.com/chrislusf/seaweedfs/wiki)
-[![Docker Pulls](https://img.shields.io/docker/pulls/chrislusf/seaweedfs.svg?maxAge=4800)](https://hub.docker.com/r/chrislusf/seaweedfs/)
+[![Docker Pulls](https://img.shields.io/docker/pulls/chrislusf/seaweedfs?maxAge=4800)](https://hub.docker.com/r/chrislusf/seaweedfs/)
 [![SeaweedFS on Maven Central](https://img.shields.io/maven-central/v/com.github.chrislusf/seaweedfs-client)](https://search.maven.org/search?q=g:com.github.chrislusf)


@@ -44,7 +44,8 @@ Your support will be really appreciated by me and other supporters!
 - [SeaweedFS Mailing List](https://groups.google.com/d/forum/seaweedfs)
 - [Wiki Documentation](https://github.com/chrislusf/seaweedfs/wiki)
 - [SeaweedFS White Paper](https://github.com/chrislusf/seaweedfs/wiki/SeaweedFS_Architecture.pdf)
- [SeaweedFS Introduction Slides](https://www.slideshare.net/chrislusf/seaweedfs-introduction)
+- [SeaweedFS Introduction Slides 2021.5](https://docs.google.com/presentation/d/1DcxKWlINc-HNCjhYeERkpGXXm6nTCES8mi2W5G0Z4Ts/edit?usp=sharing)
+- [SeaweedFS Introduction Slides 2019.3](https://www.slideshare.net/chrislusf/seaweedfs-introduction)

 Table of Contents
 =================
@@ -68,16 +69,16 @@ Table of Contents
 * [License](#license)


+## Quick Start for S3 API on Docker ##
+
+`docker run -p 8333:8333 chrislusf/seaweedfs server -s3`
+
 ## Quick Start with single binary ##
 * Download the latest binary from https://github.com/chrislusf/seaweedfs/releases and unzip a single binary file `weed` or `weed.exe`
 * Run `weed server -dir=/some/data/dir -s3` to start one master, one volume server, one filer, and one S3 gateway.

 Also, to increase capacity, just add more volume servers by running `weed volume -dir="/some/data/dir2" -mserver="<master_host>:9333" -port=8081` locally, or on a different machine, or on thousands of machines. That is it!

-## Quick Start for S3 API on Docker ##
-
-`docker run -p 8333:8333 chrislusf/seaweedfs server -s3`
-
 ## Introduction ##

 SeaweedFS is a simple and highly scalable distributed file system. There are two objectives:
@@ -92,13 +93,6 @@ and these volume servers manage files and their metadata.
 This relieves concurrency pressure from the central master and spreads file metadata into volume servers, 
 allowing faster file access (O(1), usually just one disk read operation).

-SeaweedFS can transparently integrate with the cloud. 
-With hot data on local cluster, and warm data on the cloud with O(1) access time, 
-SeaweedFS can achieve both fast local access time and elastic cloud storage capacity. 
-What's more, the cloud storage access API cost is minimized. 
-Faster and Cheaper than direct cloud storage!
-Signup for future managed SeaweedFS cluster offering at "seaweedfilesystem at gmail dot com".
-
 There is only 40 bytes of disk storage overhead for each file's metadata. 
 It is so simple with O(1) disk reads that you are welcome to challenge the performance with your actual use cases.

@@ -108,12 +102,18 @@ Also, SeaweedFS implements erasure coding with ideas from

 On top of the object store, optional [Filer] can support directories and POSIX attributes. 
 Filer is a separate linearly-scalable stateless server with customizable metadata stores, 
-e.g., MySql, Postgres, Redis, Cassandra, HBase, Mongodb, Elastic Search, LevelDB, RocksDB, MemSql, TiDB, Etcd, CockroachDB, etc.
+e.g., MySql, Postgres, Redis, Cassandra, HBase, Mongodb, Elastic Search, LevelDB, RocksDB, Sqlite, MemSql, TiDB, Etcd, CockroachDB, etc.

 For any distributed key value stores, the large values can be offloaded to SeaweedFS. 
 With the fast access speed and linearly scalable capacity, 
 SeaweedFS can work as a distributed [Key-Large-Value store][KeyLargeValueStore].

+SeaweedFS can transparently integrate with the cloud. 
+With hot data on local cluster, and warm data on the cloud with O(1) access time, 
+SeaweedFS can achieve both fast local access time and elastic cloud storage capacity.
+What's more, the cloud storage access API cost is minimized. 
+Faster and Cheaper than direct cloud storage!
+
 [Back to TOC](#table-of-contents)

 ## Additional Features ##
@@ -146,6 +146,7 @@ SeaweedFS can work as a distributed [Key-Large-Value store][KeyLargeValueStore].
 * [WebDAV] accesses as a mapped drive on Mac and Windows, or from mobile devices.
 * [AES256-GCM Encrypted Storage][FilerDataEncryption] safely stores the encrypted data.
 * [Super Large Files][SuperLargeFiles] stores large or super large files in tens of TB.
+* [Cloud Drive][CloudDrive] mounts cloud storage to local cluster, cached for fast read and write with asynchronous write back.

 ## Kubernetes ##
 * [Kubernetes CSI Driver][SeaweedFsCsiDriver] A Container Storage Interface (CSI) Driver. [![Docker Pulls](https://img.shields.io/docker/pulls/chrislusf/seaweedfs-csi-driver.svg?maxAge=4800)](https://hub.docker.com/r/chrislusf/seaweedfs-csi-driver/)
@@ -168,6 +169,8 @@ SeaweedFS can work as a distributed [Key-Large-Value store][KeyLargeValueStore].
 [ActiveActiveAsyncReplication]: https://github.com/chrislusf/seaweedfs/wiki/Filer-Active-Active-cross-cluster-continuous-synchronization
 [FilerStoreReplication]: https://github.com/chrislusf/seaweedfs/wiki/Filer-Store-Replication
 [KeyLargeValueStore]: https://github.com/chrislusf/seaweedfs/wiki/Filer-as-a-Key-Large-Value-Store
+[CloudDrive]: https://github.com/chrislusf/seaweedfs/wiki/Cloud-Drive-Architecture
+

 [Back to TOC](#table-of-contents)

@@ -321,7 +324,7 @@ When requesting a file key, an optional "dataCenter" parameter can limit the ass

 [Back to TOC](#table-of-contents)

-## Architecture ##
+## Object Store Architecture ##

 Usually distributed file systems split each file into chunks, a central master keeps a mapping of filenames, chunk indices to chunk handles, and also which chunks each chunk server has.

@@ -399,7 +402,7 @@ The architectures are mostly the same. SeaweedFS aims to store and read files fa

 * SeaweedFS optimizes for small files, ensuring O(1) disk seek operation, and can also handle large files.
 * SeaweedFS statically assigns a volume id for a file. Locating file content becomes just a lookup of the volume id, which can be easily cached.
-* SeaweedFS Filer metadata store can be any well-known and proven data stores, e.g., Redis, Cassandra, HBase, Mongodb, Elastic Search, MySql, Postgres, MemSql, TiDB, CockroachDB, Etcd etc, and is easy to customized.
+* SeaweedFS Filer metadata store can be any well-known and proven data stores, e.g., Redis, Cassandra, HBase, Mongodb, Elastic Search, MySql, Postgres, Sqlite, MemSql, TiDB, CockroachDB, Etcd etc, and is easy to customized.
 * SeaweedFS Volume server also communicates directly with clients via HTTP, supporting range queries, direct uploads, etc.

 | System         | File Metadata                   | File Content Read| POSIX  | REST API | Optimized for large number of small files |
@@ -441,7 +444,7 @@ Ceph uses CRUSH hashing to automatically manage the data placement, which is eff

 SeaweedFS is optimized for small files. Small files are stored as one continuous block of content, with at most 8 unused bytes between files. Small file access is O(1) disk read.

-SeaweedFS Filer uses off-the-shelf stores, such as MySql, Postgres, Mongodb, Redis, Elastic Search, Cassandra, HBase, MemSql, TiDB, CockroachCB, Etcd, to manage file directories. These stores are proven, scalable, and easier to manage.
+SeaweedFS Filer uses off-the-shelf stores, such as MySql, Postgres, Sqlite, Mongodb, Redis, Elastic Search, Cassandra, HBase, MemSql, TiDB, CockroachCB, Etcd, to manage file directories. These stores are proven, scalable, and easier to manage.

 | SeaweedFS         | comparable to Ceph | advantage |
 | -------------  | ------------- | ---------------- |
@@ -587,6 +590,7 @@ The text of this page is available for modification and reuse under the terms of

 [Back to TOC](#table-of-contents)

-## Stargazers over time ##
+## Stargazers over time
+
+[![Stargazers over time](https://starchart.cc/chrislusf/seaweedfs.svg)](https://starchart.cc/chrislusf/seaweedfs)

-[![Stargazers over time](https://starcharts.herokuapp.com/chrislusf/seaweedfs.svg)](https://starcharts.herokuapp.com/chrislusf/seaweedfs)
@@ -8,7 +8,9 @@ RUN \
         elif [ $(uname -m) == "x86_64" ] && [ $(getconf LONG_BIT) == "32" ]; then echo "386"; \
         elif [ $(uname -m) == "aarch64" ]; then echo "arm64"; \
         elif [ $(uname -m) == "armv7l" ]; then echo "arm"; \
-         elif [ $(uname -m) == "armv6l" ]; then echo "arm"; fi;) && \
+         elif [ $(uname -m) == "armv6l" ]; then echo "arm"; \
+         elif [ $(uname -m) == "s390x" ]; then echo "s390x"; \
+         elif [ $(uname -m) == "ppc64le" ]; then echo "ppc64le"; fi;) && \
    echo "Building for $ARCH" 1>&2 && \
    SUPERCRONIC_SHA1SUM=$(echo $ARCH | sed 's/386/e0126b0102b9f388ecd55714358e3ad60d0cebdb/g' | sed 's/amd64/5ddf8ea26b56d4a7ff6faecdd8966610d5cb9d85/g' | sed 's/arm64/e2714c43e7781bf1579c85aa61259245f56dbba1/g' | sed 's/arm/47481c3341bc3a1ae91a728e0cc63c8e6d3791ad/g') && \
    SUPERCRONIC_URL=https://github.com/aptible/supercronic/releases/download/v0.1.9/supercronic-linux-$ARCH && \
@@ -16,7 +18,7 @@ RUN \
    # Install SeaweedFS and Supercronic ( for cron job mode )
    apk add --no-cache --virtual build-dependencies --update wget curl ca-certificates && \
    apk add fuse && \
-    wget -P /tmp https://github.com/$(curl -s -L https://github.com/chrislusf/seaweedfs/releases/${RELEASE} | egrep -o "chrislusf/seaweedfs/releases/download/.*/linux_$ARCH.tar.gz") && \
+    wget -P /tmp https://github.com/$(curl -s -L https://github.com/chrislusf/seaweedfs/releases/${RELEASE} | egrep -o "chrislusf/seaweedfs/releases/download/.*/linux_$ARCH.tar.gz" | head -n 1) && \
    tar -C /usr/bin/ -xzvf /tmp/linux_$ARCH.tar.gz && \
    curl -fsSLO "$SUPERCRONIC_URL" && \
    echo "${SUPERCRONIC_SHA1SUM}  ${SUPERCRONIC}" | sha1sum -c - && \
@@ -0,0 +1,43 @@
+FROM gcc:11 as builder
+RUN mkdir -p /go/src/github.com/chrislusf/
+RUN git clone https://github.com/chrislusf/seaweedfs /go/src/github.com/chrislusf/seaweedfs
+ARG BRANCH=${BRANCH:-master}
+RUN cd /go/src/github.com/chrislusf/seaweedfs && git checkout $BRANCH
+RUN cd /go/src/github.com/chrislusf/seaweedfs/weed \
+  && apt-get update \
+  && apt-get install -y golang-src \
+  && export LDFLAGS="-X github.com/chrislusf/seaweedfs/weed/util.COMMIT=$(git rev-parse --short HEAD)" \
+  && CGO_ENABLED=0 go install -ldflags "-extldflags -static ${LDFLAGS}" -compiler=gccgo -tags gccgo,noasm
+
+FROM alpine AS final
+LABEL author="Chris Lu"
+COPY --from=builder /go/bin/weed /usr/bin/
+RUN mkdir -p /etc/seaweedfs
+COPY --from=builder /go/src/github.com/chrislusf/seaweedfs/docker/filer.toml /etc/seaweedfs/filer.toml
+COPY --from=builder /go/src/github.com/chrislusf/seaweedfs/docker/entrypoint.sh /entrypoint.sh
+RUN apk add fuse # for weed mount
+
+# volume server gprc port
+EXPOSE 18080
+# volume server http port
+EXPOSE 8080
+# filer server gprc port
+EXPOSE 18888
+# filer server http port
+EXPOSE 8888
+# master server shared gprc port
+EXPOSE 19333
+# master server shared http port
+EXPOSE 9333
+# s3 server http port
+EXPOSE 8333
+# webdav server http port
+EXPOSE 7333
+
+RUN mkdir -p /data/filerldb2
+
+VOLUME /data
+
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]
@@ -1,4 +1,4 @@
-FROM amd64/golang:1.16-alpine as builder
+FROM amd64/golang:1.17-alpine as builder
 RUN apk add git g++ fuse
 RUN mkdir -p /go/src/github.com/chrislusf/
 RUN git clone https://github.com/chrislusf/seaweedfs /go/src/github.com/chrislusf/seaweedfs
@@ -1,4 +1,4 @@
-FROM amd64/golang:1.16-alpine as builder
+FROM amd64/golang:1.17-alpine as builder
 RUN apk add git g++ fuse
 RUN mkdir -p /go/src/github.com/chrislusf/
 RUN git clone https://github.com/chrislusf/seaweedfs /go/src/github.com/chrislusf/seaweedfs
@@ -25,6 +25,9 @@ dev_tls: build certstrap
 dev_mount: build
 	docker-compose -f compose/local-mount-compose.yml -p seaweedfs up

+run_image: build
+	docker run --rm -ti --device /dev/fuse --cap-add SYS_ADMIN --entrypoint /bin/sh chrislusf/seaweedfs:local
+
 profile_mount: build
 	docker-compose -f compose/local-mount-profile-compose.yml -p seaweedfs up

@@ -38,7 +38,7 @@ services:
      S3TEST_CONF: "s3tests.conf"
      NOSETESTS_OPTIONS: "--verbose --logging-level=ERROR --with-xunit --failure-detail s3tests_boto3.functional.test_s3"
      NOSETESTS_ATTR: "!tagging,!fails_on_aws,!encryption,!bucket-policy,!versioning,!fails_on_rgw,!bucket-policy,!fails_with_subdomain,!policy_status,!object-lock,!lifecycle,!cors,!user-policy"
-      NOSETESTS_EXCLUDE: "(bucket_list_delimiter_basic|bucket_listv2_delimiter_basic|bucket_listv2_encoding_basic|bucket_list_encoding_basic|bucket_list_delimiter_prefix|bucket_listv2_delimiter_prefix_ends_with_delimiter|bucket_list_delimiter_prefix_ends_with_delimiter|bucket_list_delimiter_alt|bucket_listv2_delimiter_alt|bucket_list_delimiter_prefix_underscore|bucket_list_delimiter_percentage|bucket_listv2_delimiter_percentage|bucket_list_delimiter_whitespace|bucket_listv2_delimiter_whitespace|bucket_list_delimiter_dot|bucket_listv2_delimiter_dot|bucket_list_delimiter_unreadable|bucket_listv2_delimiter_unreadable|bucket_listv2_fetchowner_defaultempty|bucket_listv2_fetchowner_empty|bucket_list_prefix_delimiter_alt|bucket_listv2_prefix_delimiter_alt|bucket_list_prefix_delimiter_prefix_not_exist|bucket_listv2_prefix_delimiter_prefix_not_exist|bucket_list_prefix_delimiter_delimiter_not_exist|bucket_listv2_prefix_delimiter_delimiter_not_exist|bucket_list_prefix_delimiter_prefix_delimiter_not_exist|bucket_listv2_prefix_delimiter_prefix_delimiter_not_exist|bucket_list_maxkeys_none|bucket_listv2_maxkeys_none|bucket_list_maxkeys_invalid|bucket_listv2_continuationtoken_empty|bucket_list_return_data|bucket_list_objects_anonymous|bucket_listv2_objects_anonymous|bucket_notexist|bucketv2_notexist|bucket_delete_nonempty|bucket_concurrent_set_canned_acl|object_write_to_nonexist_bucket|object_requestid_matches_header_on_error|object_write_cache_control|object_write_expires|object_set_get_metadata_none_to_good|object_set_get_metadata_none_to_empty|object_set_get_metadata_overwrite_to_empty|post_object_anonymous_request|post_object_authenticated_request|post_object_authenticated_no_content_type|post_object_authenticated_request_bad_access_key|post_object_set_success_code|post_object_set_invalid_success_code|post_object_upload_larger_than_chunk|post_object_set_key_from_filename|post_object_ignored_header|post_object_case_insensitive_condition_fields|post_object_escaped_field_values|post_object_success_redirect_action|post_object_invalid_signature|post_object_invalid_access_key|post_object_missing_policy_condition|post_object_user_specified_header|post_object_request_missing_policy_specified_field|post_object_expired_policy|post_object_invalid_request_field_value|get_object_ifmatch_failed|get_object_ifunmodifiedsince_good|put_object_ifmatch_failed|object_raw_get_bucket_gone|object_delete_key_bucket_gone|object_raw_get_bucket_acl|object_raw_get_object_acl|object_raw_response_headers|object_raw_authenticated_bucket_gone|object_raw_get_x_amz_expires_out_max_range|object_raw_get_x_amz_expires_out_positive_range|object_anon_put_write_access|object_raw_put_authenticated_expired|bucket_create_exists|bucket_create_naming_bad_short_one|bucket_create_naming_bad_short_two|bucket_get_location|bucket_acl_default|bucket_acl_canned|bucket_acl_canned_publicreadwrite|bucket_acl_canned_authenticatedread|object_acl_default|object_acl_canned_during_create|object_acl_canned|object_acl_canned_publicreadwrite|object_acl_canned_authenticatedread|object_acl_canned_bucketownerread|object_acl_canned_bucketownerfullcontrol|object_acl_full_control_verify_attributes|bucket_acl_canned_private_to_private|bucket_acl_grant_nonexist_user|bucket_acl_no_grants|bucket_acl_grant_email_not_exist|bucket_acl_revoke_all|bucket_recreate_not_overriding|object_copy_verify_contenttype|object_copy_to_itself_with_metadata|object_copy_not_owned_bucket|object_copy_not_owned_object_bucket|object_copy_retaining_metadata|object_copy_replacing_metadata|multipart_upload_empty|multipart_copy_invalid_range|multipart_copy_special_names|multipart_upload_resend_part|multipart_upload_size_too_small|abort_multipart_upload_not_found|multipart_upload_missing_part|multipart_upload_incorrect_etag|100_continue|ranged_request_invalid_range|ranged_request_empty_object|access_bucket)"
+      NOSETESTS_EXCLUDE: "(bucket_list_delimiter_basic|bucket_listv2_delimiter_basic|bucket_listv2_encoding_basic|bucket_list_encoding_basic|bucket_list_delimiter_prefix|bucket_listv2_delimiter_prefix_ends_with_delimiter|bucket_list_delimiter_prefix_ends_with_delimiter|bucket_list_delimiter_alt|bucket_listv2_delimiter_alt|bucket_list_delimiter_prefix_underscore|bucket_list_delimiter_percentage|bucket_listv2_delimiter_percentage|bucket_list_delimiter_whitespace|bucket_listv2_delimiter_whitespace|bucket_list_delimiter_dot|bucket_listv2_delimiter_dot|bucket_list_delimiter_unreadable|bucket_listv2_delimiter_unreadable|bucket_listv2_fetchowner_defaultempty|bucket_listv2_fetchowner_empty|bucket_list_prefix_delimiter_alt|bucket_listv2_prefix_delimiter_alt|bucket_list_prefix_delimiter_prefix_not_exist|bucket_listv2_prefix_delimiter_prefix_not_exist|bucket_list_prefix_delimiter_delimiter_not_exist|bucket_listv2_prefix_delimiter_delimiter_not_exist|bucket_list_prefix_delimiter_prefix_delimiter_not_exist|bucket_listv2_prefix_delimiter_prefix_delimiter_not_exist|bucket_list_maxkeys_none|bucket_listv2_maxkeys_none|bucket_list_maxkeys_invalid|bucket_listv2_continuationtoken_empty|bucket_list_return_data|bucket_list_objects_anonymous|bucket_listv2_objects_anonymous|bucket_notexist|bucketv2_notexist|bucket_delete_nonempty|bucket_concurrent_set_canned_acl|object_write_to_nonexist_bucket|object_requestid_matches_header_on_error|object_set_get_metadata_none_to_good|object_set_get_metadata_none_to_empty|object_set_get_metadata_overwrite_to_empty|post_object_anonymous_request|post_object_authenticated_request|post_object_authenticated_no_content_type|post_object_authenticated_request_bad_access_key|post_object_set_success_code|post_object_set_invalid_success_code|post_object_upload_larger_than_chunk|post_object_set_key_from_filename|post_object_ignored_header|post_object_case_insensitive_condition_fields|post_object_escaped_field_values|post_object_success_redirect_action|post_object_invalid_signature|post_object_invalid_access_key|post_object_missing_policy_condition|post_object_user_specified_header|post_object_request_missing_policy_specified_field|post_object_expired_policy|post_object_invalid_request_field_value|get_object_ifunmodifiedsince_good|put_object_ifmatch_failed|object_raw_get_bucket_gone|object_delete_key_bucket_gone|object_raw_get_bucket_acl|object_raw_get_object_acl|object_raw_response_headers|object_raw_authenticated_bucket_gone|object_raw_get_x_amz_expires_out_max_range|object_raw_get_x_amz_expires_out_positive_range|object_anon_put_write_access|object_raw_put_authenticated_expired|bucket_create_exists|bucket_create_naming_bad_short_one|bucket_create_naming_bad_short_two|bucket_get_location|bucket_acl_default|bucket_acl_canned|bucket_acl_canned_publicreadwrite|bucket_acl_canned_authenticatedread|object_acl_default|object_acl_canned_during_create|object_acl_canned|object_acl_canned_publicreadwrite|object_acl_canned_authenticatedread|object_acl_canned_bucketownerread|object_acl_canned_bucketownerfullcontrol|object_acl_full_control_verify_attributes|bucket_acl_canned_private_to_private|bucket_acl_grant_nonexist_user|bucket_acl_no_grants|bucket_acl_grant_email_not_exist|bucket_acl_revoke_all|bucket_recreate_not_overriding|object_copy_verify_contenttype|object_copy_to_itself_with_metadata|object_copy_not_owned_bucket|object_copy_not_owned_object_bucket|object_copy_retaining_metadata|object_copy_replacing_metadata|multipart_upload_empty|multipart_copy_invalid_range|multipart_copy_special_names|multipart_upload_resend_part|multipart_upload_size_too_small|abort_multipart_upload_not_found|multipart_upload_missing_part|multipart_upload_incorrect_etag|100_continue|ranged_request_invalid_range|ranged_request_empty_object|access_bucket)"
    depends_on:
      - master
      - volume
@@ -1,26 +1,34 @@
 module github.com/chrislusf/seaweedfs

-go 1.16
+go 1.17

 require (
-	cloud.google.com/go v0.58.0 // indirect
+	cloud.google.com/go v0.94.1 // indirect
 	cloud.google.com/go/pubsub v1.3.1
-	cloud.google.com/go/storage v1.9.0
-	github.com/Azure/azure-amqp-common-go/v2 v2.1.0 // indirect
-	github.com/Azure/azure-pipeline-go v0.2.2 // indirect
-	github.com/Azure/azure-storage-blob-go v0.9.0
+	cloud.google.com/go/storage v1.16.1
+	github.com/Azure/azure-pipeline-go v0.2.3
+	github.com/Azure/azure-storage-blob-go v0.14.0
+	github.com/BurntSushi/toml v0.3.1 // indirect
+	github.com/DataDog/zstd v1.3.6-0.20190409195224-796139022798 // indirect
 	github.com/OneOfOne/xxhash v1.2.2
 	github.com/Shopify/sarama v1.23.1
-	github.com/aws/aws-sdk-go v1.34.30
+	github.com/aws/aws-sdk-go v1.35.3
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72
 	github.com/bwmarrin/snowflake v0.3.0
 	github.com/cespare/xxhash v1.1.0
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/chrislusf/raft v1.0.7
+	github.com/colinmarc/hdfs/v2 v2.2.0
 	github.com/coreos/go-semver v0.3.0 // indirect
-	github.com/dgrijalva/jwt-go v3.2.0+incompatible
+	github.com/coreos/go-systemd/v22 v22.3.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/disintegration/imaging v1.6.2
 	github.com/dustin/go-humanize v1.0.0
 	github.com/eapache/go-resiliency v1.2.0 // indirect
+	github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21 // indirect
+	github.com/eapache/queue v1.1.0 // indirect
 	github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a
 	github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c // indirect
 	github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect
@@ -28,79 +36,167 @@ require (
 	github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 // indirect
 	github.com/fclairamb/ftpserverlib v0.8.0
 	github.com/frankban/quicktest v1.7.2 // indirect
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/go-errors/errors v1.1.1 // indirect
 	github.com/go-redis/redis/v8 v8.4.4
 	github.com/go-sql-driver/mysql v1.5.0
-	github.com/gocql/gocql v0.0.0-20190829130954-e163eff7a8c6
-	github.com/gogo/protobuf v1.2.2-0.20190730201129-28a6bbf47e48 // indirect
-	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e
-	github.com/golang/protobuf v1.4.2
+	github.com/go-stack/stack v1.8.0 // indirect
+	github.com/go-zookeeper/zk v1.0.2 // indirect
+	github.com/gocql/gocql v0.0.0-20210707082121-9a3953d1826d
+	github.com/golang-jwt/jwt v3.2.1+incompatible
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da
+	github.com/golang/protobuf v1.5.2
+	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/btree v1.0.0
-	github.com/google/uuid v1.1.1
+	github.com/google/go-cmp v0.5.6 // indirect
+	github.com/google/uuid v1.3.0
+	github.com/google/wire v0.4.0 // indirect
+	github.com/googleapis/gax-go v2.0.2+incompatible // indirect
+	github.com/googleapis/gax-go/v2 v2.1.0 // indirect
 	github.com/gorilla/mux v1.7.4
 	github.com/gorilla/websocket v1.4.1 // indirect
-	github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4 // indirect
-	github.com/grpc-ecosystem/grpc-gateway v1.11.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware v1.1.0
+	github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/hashicorp/go-multierror v1.0.0 // indirect
+	github.com/hashicorp/go-uuid v1.0.2 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/jcmturner/gofork v1.0.0 // indirect
+	github.com/jcmturner/gokrb5/v8 v8.4.1
 	github.com/jinzhu/copier v0.2.8
-	github.com/json-iterator/go v1.1.10
-	github.com/karlseguin/ccache v2.0.3+incompatible // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+	github.com/json-iterator/go v1.1.11
 	github.com/karlseguin/ccache/v2 v2.0.7
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
 	github.com/klauspost/compress v1.10.9 // indirect
 	github.com/klauspost/cpuid v1.2.1 // indirect
-	github.com/klauspost/crc32 v1.2.0
 	github.com/klauspost/reedsolomon v1.9.2
+	github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect
 	github.com/kurin/blazer v0.5.3
 	github.com/lib/pq v1.10.0
-	github.com/lunixbochs/vtclean v1.0.0 // indirect
 	github.com/magiconair/properties v1.8.1 // indirect
-	github.com/mattn/go-colorable v0.1.2 // indirect
-	github.com/mattn/go-runewidth v0.0.4 // indirect
+	github.com/mailru/easyjson v0.7.1 // indirect
+	github.com/mattn/go-ieproxy v0.0.1 // indirect
+	github.com/mattn/go-isatty v0.0.12 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/mitchellh/mapstructure v1.1.2 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/nats-io/jwt v1.0.1 // indirect
+	github.com/nats-io/nats.go v1.10.0 // indirect
+	github.com/nats-io/nkeys v0.2.0 // indirect
+	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/olivere/elastic/v7 v7.0.19
+	github.com/pelletier/go-toml v1.7.0 // indirect
 	github.com/peterh/liner v1.1.0
 	github.com/pierrec/lz4 v2.2.7+incompatible // indirect
-	github.com/prometheus/client_golang v1.3.0
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/posener/complete v1.2.3
+	github.com/pquerna/cachecontrol v0.1.0
+	github.com/prometheus/client_golang v1.11.0
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.26.0 // indirect
+	github.com/prometheus/procfs v0.6.0 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20190826022208-cac0b30c2563 // indirect
-	github.com/seaweedfs/fuse v1.1.6
+	github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0 // indirect
+	github.com/seaweedfs/fuse v1.2.0
 	github.com/seaweedfs/goexif v1.0.2
-	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
+	github.com/sirupsen/logrus v1.6.0 // indirect
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/spf13/afero v1.6.0 // indirect
+	github.com/spf13/cast v1.3.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/viper v1.4.0
 	github.com/streadway/amqp v0.0.0-20200108173154-1c71cc93ed71
-	github.com/stretchr/testify v1.6.1
-	github.com/syndtr/goleveldb v1.0.0
+	github.com/stretchr/testify v1.7.0
+	github.com/syndtr/goleveldb v1.0.1-0.20190318030020-c3a204f8e965
 	github.com/tecbot/gorocksdb v0.0.0-20191217155057-f0fad39f321c
-	github.com/tidwall/gjson v1.3.2
-	github.com/tidwall/match v1.0.1
+	github.com/tidwall/gjson v1.8.1
+	github.com/tidwall/match v1.0.3
+	github.com/tidwall/pretty v1.1.0 // indirect
+	github.com/tikv/client-go/v2 v2.0.0-alpha.0.20210824090536-16d902a3c7e5
 	github.com/tsuna/gohbase v0.0.0-20201125011725-348991136365
+	github.com/tylertreat/BoomFilters v0.0.0-20210315201527-1a82519a3e43
 	github.com/valyala/bytebufferpool v1.0.0
 	github.com/viant/assertly v0.5.4 // indirect
 	github.com/viant/ptrie v0.3.0
 	github.com/viant/toolbox v0.33.2 // indirect
-	github.com/willf/bitset v1.1.10 // indirect
-	github.com/willf/bloom v2.0.3+incompatible
-	github.com/wsxiaoys/terminal v0.0.0-20160513160801-0940f3fc43a0 // indirect
-	go.etcd.io/etcd v3.3.15+incompatible
-	go.mongodb.org/mongo-driver v1.3.2
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.0.2 // indirect
+	github.com/xdg-go/stringprep v1.0.2 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
+	go.etcd.io/etcd v3.3.25+incompatible
+	go.mongodb.org/mongo-driver v1.7.0
+	go.opencensus.io v0.23.0 // indirect
+	go.opentelemetry.io/otel v0.15.0 // indirect
 	gocloud.dev v0.20.0
 	gocloud.dev/pubsub/natspubsub v0.20.0
 	gocloud.dev/pubsub/rabbitpubsub v0.20.0
-	golang.org/x/image v0.0.0-20200119044424-58c23975cae1 // indirect
-	golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb
-	golang.org/x/sync v0.0.0-20200930132711-30421366ff76 // indirect
-	golang.org/x/sys v0.0.0-20201022201747-fb209a7c41cd
-	golang.org/x/tools v0.0.0-20200608174601-1b747fd94509
-	google.golang.org/api v0.26.0
-	google.golang.org/grpc v1.29.1
-	google.golang.org/protobuf v1.24.0
-	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
+	golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0 // indirect
+	golang.org/x/image v0.0.0-20200119044424-58c23975cae1
+	golang.org/x/net v0.0.0-20210813160813-60bc85c4be6d
+	golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f // indirect
+	golang.org/x/sys v0.0.0-20210823070655-63515b42dcdf
+	golang.org/x/text v0.3.6 // indirect
+	golang.org/x/tools v0.1.5
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	google.golang.org/api v0.56.0
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83 // indirect
+	google.golang.org/grpc v1.40.0
+	google.golang.org/protobuf v1.27.1
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/jcmturner/aescts.v1 v1.0.1 // indirect
+	gopkg.in/jcmturner/dnsutils.v1 v1.0.1 // indirect
 	gopkg.in/jcmturner/goidentity.v3 v3.0.0 // indirect
 	gopkg.in/jcmturner/gokrb5.v7 v7.3.0 // indirect
-	gopkg.in/karlseguin/expect.v1 v1.0.1 // indirect
+	gopkg.in/jcmturner/rpc.v1 v1.1.0 // indirect
+	modernc.org/b v1.0.0 // indirect
+	modernc.org/cc/v3 v3.33.5 // indirect
+	modernc.org/ccgo/v3 v3.9.4 // indirect
+	modernc.org/libc v1.9.5 // indirect
+	modernc.org/mathutil v1.2.2 // indirect
+	modernc.org/memory v1.0.4 // indirect
+	modernc.org/opt v0.1.1 // indirect
+	modernc.org/sqlite v1.10.7
+	modernc.org/strutil v1.1.0 // indirect
+	modernc.org/token v1.0.0 // indirect
+)
+
+require (
+	github.com/coreos/etcd v3.3.10+incompatible // indirect
+	github.com/cznic/mathutil v0.0.0-20181122101859-297441e03548 // indirect
+	github.com/d4l3k/messagediff v1.2.1 // indirect
+	github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/jcmturner/aescts/v2 v2.0.0 // indirect
+	github.com/jcmturner/dnsutils/v2 v2.0.0 // indirect
+	github.com/jcmturner/goidentity/v6 v6.0.1 // indirect
+	github.com/jcmturner/rpc/v2 v2.0.2 // indirect
+	github.com/mattn/go-runewidth v0.0.7 // indirect
+	github.com/opentracing/opentracing-go v1.2.0 // indirect
+	github.com/pingcap/errors v0.11.5-0.20201126102027-b0a155152ca3 // indirect
+	github.com/pingcap/failpoint v0.0.0-20210316064728-7acb0f0a3dfd // indirect
+	github.com/pingcap/kvproto v0.0.0-20210806074406-317f69fb54b4 // indirect
+	github.com/pingcap/log v0.0.0-20210317133921-96f4fcab92a4 // indirect
+	github.com/pingcap/parser v0.0.0-20210525032559-c37778aff307 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/tikv/pd v1.1.0-beta.0.20210323121136-78679e5e209d // indirect
+	github.com/twmb/murmur3 v1.1.3 // indirect
+	go.etcd.io/etcd/api/v3 v3.5.0 // indirect
+	go.etcd.io/etcd/client/pkg/v3 v3.5.0 // indirect
+	go.etcd.io/etcd/client/v3 v3.5.0 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.7.0 // indirect
+	go.uber.org/zap v1.17.0 // indirect
+	golang.org/x/lint v0.0.0-20210508222113-6edffad5e616 // indirect
+	golang.org/x/mod v0.4.2 // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )

 // replace github.com/seaweedfs/fuse => /Users/chris/go/src/github.com/seaweedfs/fuse
 // replace github.com/chrislusf/raft => /Users/chris/go/src/github.com/chrislusf/raft
-
-replace go.etcd.io/etcd => go.etcd.io/etcd v0.5.0-alpha.5.0.20200425165423-262c93980547
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "2.48"
-version: 2.48
+appVersion: "2.67"
+version: "2.67"
@@ -110,7 +110,7 @@ spec:
                -dataCenter={{ .Values.volume.dataCenter }} \
                {{- end }}
                -ip.bind={{ .Values.volume.ipBind }} \
-                -read.redirect={{ .Values.volume.readRedirect }} \
+                -readMode={{ .Values.volume.readMode }} \
                {{- if .Values.volume.whiteList }}
                -whiteList={{ .Values.volume.whiteList }} \
                {{- end }}
@@ -4,7 +4,6 @@ global:
  registry: ""
  repository: ""
  imageName: chrislusf/seaweedfs
-  # imageTag: "2.48" - started using {.Chart.appVersion}
  imagePullPolicy: IfNotPresent
  imagePullSecrets: imagepullsecret
  restartPolicy: Always
@@ -175,8 +174,8 @@ volume:
  # Volume server's data center name
  dataCenter: null

-  # Redirect moved or non-local volumes. (default true)
-  readRedirect: true
+  # Redirect moved or non-local volumes. (default proxy)
+  readMode: proxy

  # Comma separated Ip addresses having write permission. No limit if empty.
  whiteList: null
@@ -5,7 +5,7 @@

    <groupId>com.github.chrislusf</groupId>
    <artifactId>seaweedfs-client</artifactId>
-    <version>1.6.4</version>
+    <version>1.6.7</version>

    <parent>
        <groupId>org.sonatype.oss</groupId>
@@ -5,7 +5,7 @@

    <groupId>com.github.chrislusf</groupId>
    <artifactId>seaweedfs-client</artifactId>
-    <version>1.6.4</version>
+    <version>1.6.7</version>

    <parent>
        <groupId>org.sonatype.oss</groupId>
@@ -5,7 +5,7 @@

    <groupId>com.github.chrislusf</groupId>
    <artifactId>seaweedfs-client</artifactId>
-    <version>1.6.4</version>
+    <version>1.6.7</version>

    <parent>
        <groupId>org.sonatype.oss</groupId>
@@ -10,7 +10,7 @@ import java.util.List;

 public class ByteBufferPool {

-    private static final int MIN_BUFFER_SIZE = 8 * 1024 * 1024;
+    private static final int MIN_BUFFER_SIZE = 1 * 1024 * 1024;
    private static final Logger LOG = LoggerFactory.getLogger(ByteBufferPool.class);

    private static final List<ByteBuffer> bufferList = new ArrayList<>();
@@ -4,7 +4,6 @@ import com.google.common.base.Strings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

-import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Iterator;
@@ -59,24 +58,39 @@ public class FilerClient extends FilerGrpcClient {

    public static FilerProto.Entry afterEntryDeserialization(FilerProto.Entry entry) {
        if (entry.getChunksList().size() <= 0) {
-            return entry;
-        }
-        String fileId = entry.getChunks(0).getFileId();
-        if (fileId != null && fileId.length() != 0) {
-            return entry;
-        }
-        FilerProto.Entry.Builder entryBuilder = entry.toBuilder();
-        entryBuilder.clearChunks();
-        for (FilerProto.FileChunk chunk : entry.getChunksList()) {
-            FilerProto.FileChunk.Builder chunkBuilder = chunk.toBuilder();
-            chunkBuilder.setFileId(toFileId(chunk.getFid()));
-            String sourceFileId = toFileId(chunk.getSourceFid());
-            if (sourceFileId != null) {
-                chunkBuilder.setSourceFileId(sourceFileId);
+            if (entry.getContent().isEmpty()) {
+                return entry;
+            } else {
+                if (entry.getAttributes().getFileSize() <= 0) {
+                    FilerProto.Entry.Builder entryBuilder = entry.toBuilder();
+                    FilerProto.FuseAttributes.Builder attrBuilder = entry.getAttributes().toBuilder();
+                    attrBuilder.setFileSize(entry.getContent().size());
+                    entryBuilder.setAttributes(attrBuilder);
+                    return entryBuilder.build();
+                }
            }
-            entryBuilder.addChunks(chunkBuilder);
+            return entry;
+        } else {
+            FilerProto.Entry.Builder entryBuilder = entry.toBuilder();
+            entryBuilder.clearChunks();
+            long fileSize = 0;
+            for (FilerProto.FileChunk chunk : entry.getChunksList()) {
+                fileSize = Math.max(fileSize, chunk.getOffset()+chunk.getSize());
+                FilerProto.FileChunk.Builder chunkBuilder = chunk.toBuilder();
+                chunkBuilder.setFileId(toFileId(chunk.getFid()));
+                String sourceFileId = toFileId(chunk.getSourceFid());
+                if (sourceFileId != null) {
+                    chunkBuilder.setSourceFileId(sourceFileId);
+                }
+                entryBuilder.addChunks(chunkBuilder);
+            }
+            if (entry.getAttributes().getFileSize() <= 0) {
+                FilerProto.FuseAttributes.Builder attrBuilder = entry.getAttributes().toBuilder();
+                attrBuilder.setFileSize(fileSize);
+                entryBuilder.setAttributes(attrBuilder);
+            }
+            return entryBuilder.build();
        }
-        return entryBuilder.build();
    }

    public boolean mkdirs(String path, int mode) {
@@ -93,9 +107,9 @@ public class FilerClient extends FilerGrpcClient {
        if ("/".equals(path)) {
            return true;
        }
-        File pathFile = new File(path);
-        String parent = pathFile.getParent().replace('\\','/');
-        String name = pathFile.getName();
+        String[] dirAndName = SeaweedUtil.toDirAndName(path);
+        String parent = dirAndName[0];
+        String name = dirAndName[1];

        mkdirs(parent, mode, uid, gid, userName, groupNames);

@@ -114,35 +128,32 @@ public class FilerClient extends FilerGrpcClient {

    public boolean mv(String oldPath, String newPath) {

-        File oldPathFile = new File(oldPath);
-        String oldParent = oldPathFile.getParent().replace('\\','/');
-        String oldName = oldPathFile.getName();
+        String[] oldDirAndName = SeaweedUtil.toDirAndName(oldPath);
+        String oldParent = oldDirAndName[0];
+        String oldName = oldDirAndName[1];

-        File newPathFile = new File(newPath);
-        String newParent = newPathFile.getParent().replace('\\','/');
-        String newName = newPathFile.getName();
+        String[] newDirAndName = SeaweedUtil.toDirAndName(newPath);
+        String newParent = newDirAndName[0];
+        String newName = newDirAndName[1];

        return atomicRenameEntry(oldParent, oldName, newParent, newName);

    }

    public boolean exists(String path){
-        File pathFile = new File(path);
-        String parent = pathFile.getParent();
-        String entryName = pathFile.getName();
-        if(parent == null) {
-            parent = path;
-            entryName  ="";
-        }
-        return lookupEntry(parent, entryName) != null;

+        String[] dirAndName = SeaweedUtil.toDirAndName(path);
+        String parent = dirAndName[0];
+        String entryName = dirAndName[1];
+
+        return lookupEntry(parent, entryName) != null;
    }

    public boolean rm(String path, boolean isRecursive, boolean ignoreRecusiveError) {

-        File pathFile = new File(path);
-        String parent = pathFile.getParent().replace('\\','/');
-        String name = pathFile.getName();
+        String[] dirAndName = SeaweedUtil.toDirAndName(path);
+        String parent = dirAndName[0];
+        String name = dirAndName[1];

        return deleteEntry(
                parent,
@@ -153,17 +164,19 @@ public class FilerClient extends FilerGrpcClient {
    }

    public boolean touch(String path, int mode) {
+
        String currentUser = System.getProperty("user.name");

        long now = System.currentTimeMillis() / 1000L;
        return touch(path, now, mode, 0, 0, currentUser, new String[]{});
+
    }

    public boolean touch(String path, long modifiedTimeSecond, int mode, int uid, int gid, String userName, String[] groupNames) {

-        File pathFile = new File(path);
-        String parent = pathFile.getParent().replace('\\','/');
-        String name = pathFile.getName();
+        String[] dirAndName = SeaweedUtil.toDirAndName(path);
+        String parent = dirAndName[0];
+        String name = dirAndName[1];

        FilerProto.Entry entry = lookupEntry(parent, name);
        if (entry == null) {
@@ -0,0 +1,23 @@
+package seaweedfs.client;
+
+import java.io.IOException;
+
+public class RemoteUtil {
+    public static boolean isInRemoteOnly(FilerProto.Entry entry) {
+        if (entry.getChunksList() == null || entry.getChunksList().isEmpty()) {
+            return entry.getRemoteEntry() != null && entry.getRemoteEntry().getRemoteSize() > 0;
+        }
+        return false;
+    }
+
+    public static FilerProto.Entry downloadRemoteEntry(FilerClient filerClient, String fullpath, FilerProto.Entry entry) throws IOException {
+        String dir = SeaweedOutputStream.getParentDirectory(fullpath);
+        String name = SeaweedOutputStream.getFileName(fullpath);
+
+        final FilerProto.DownloadToLocalResponse downloadToLocalResponse = filerClient.getBlockingStub()
+                .downloadToLocal(FilerProto.DownloadToLocalRequest.newBuilder()
+                .setDirectory(dir).setName(name).build());
+
+        return downloadToLocalResponse.getEntry();
+    }
+}
@@ -19,9 +19,9 @@ public class SeaweedInputStream extends InputStream {

    private final FilerClient filerClient;
    private final String path;
-    private final FilerProto.Entry entry;
    private final List<SeaweedRead.VisibleInterval> visibleIntervalList;
    private final long contentLength;
+    private FilerProto.Entry entry;

    private long position = 0;  // cursor of the file

@@ -35,10 +35,14 @@ public class SeaweedInputStream extends InputStream {
        this.entry = filerClient.lookupEntry(
                SeaweedOutputStream.getParentDirectory(fullpath),
                SeaweedOutputStream.getFileName(fullpath));
-        if(entry == null){
+        if (entry == null) {
            throw new FileNotFoundException();
        }

+        if (RemoteUtil.isInRemoteOnly(entry)) {
+            entry = RemoteUtil.downloadRemoteEntry(filerClient, fullpath, entry);
+        }
+
        this.contentLength = SeaweedRead.fileSize(entry);

        this.visibleIntervalList = SeaweedRead.nonOverlappingVisibleIntervals(filerClient, entry.getChunksList());
@@ -54,6 +58,11 @@ public class SeaweedInputStream extends InputStream {
        this.filerClient = filerClient;
        this.path = path;
        this.entry = entry;
+
+        if (RemoteUtil.isInRemoteOnly(entry)) {
+            this.entry = RemoteUtil.downloadRemoteEntry(filerClient, path, entry);
+        }
+
        this.contentLength = SeaweedRead.fileSize(entry);

        this.visibleIntervalList = SeaweedRead.nonOverlappingVisibleIntervals(filerClient, entry.getChunksList());
@@ -111,8 +120,8 @@ public class SeaweedInputStream extends InputStream {
        long bytesRead = 0;
        int len = buf.remaining();
        int start = (int) this.position;
-        if (start+len <= entry.getContent().size()) {
-            entry.getContent().substring(start, start+len).copyTo(buf);
+        if (start + len <= entry.getContent().size()) {
+            entry.getContent().substring(start, start + len).copyTo(buf);
        } else {
            bytesRead = SeaweedRead.read(this.filerClient, this.visibleIntervalList, this.position, buf, SeaweedRead.fileSize(entry));
        }
@@ -32,14 +32,14 @@ public class SeaweedOutputStream extends OutputStream {
    private long lastTotalAppendOffset = 0;
    private ByteBuffer buffer;
    private long outputIndex;
-    private String replication = "000";
+    private String replication = "";

    public SeaweedOutputStream(FilerClient filerClient, final String fullpath) {
-        this(filerClient, fullpath, "000");
+        this(filerClient, fullpath, "");
    }

    public SeaweedOutputStream(FilerClient filerClient, final String fullpath, final String replication) {
-        this(filerClient, fullpath, null, 0, 8 * 1024 * 1024, "000");
+        this(filerClient, fullpath, null, 0, 8 * 1024 * 1024, replication);
    }

    public SeaweedOutputStream(FilerClient filerClient, final String path, FilerProto.Entry.Builder entry,
@@ -64,10 +64,11 @@ public class SeaweedRead {
                startOffset += gap;
            }

-            FilerProto.Locations locations = knownLocations.get(parseVolumeId(chunkView.fileId));
+            String volumeId = parseVolumeId(chunkView.fileId);
+            FilerProto.Locations locations = knownLocations.get(volumeId);
            if (locations == null || locations.getLocationsCount() == 0) {
                LOG.error("failed to locate {}", chunkView.fileId);
-                // log here!
+                volumeIdCache.clearLocations(volumeId);
                return 0;
            }

@@ -27,4 +27,20 @@ public class SeaweedUtil {
    public static CloseableHttpClient getClosableHttpClient() {
        return httpClient;
    }
+
+    public static String[] toDirAndName(String fullpath) {
+        if (fullpath == null) {
+            return new String[]{"/", ""};
+        }
+        if (fullpath.endsWith("/")) {
+            fullpath = fullpath.substring(0, fullpath.length() - 1);
+        }
+        if (fullpath.length() == 0) {
+            return new String[]{"/", ""};
+        }
+        int sep = fullpath.lastIndexOf("/");
+        String parent = sep == 0 ? "/" : fullpath.substring(0, sep);
+        String name = fullpath.substring(sep + 1);
+        return new String[]{parent, name};
+    }
 }
@@ -1,5 +1,6 @@
 package seaweedfs.client;

+import com.google.common.base.Strings;
 import com.google.protobuf.ByteString;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpPost;
@@ -45,11 +46,16 @@ public class SeaweedWrite {
        FilerProto.AssignVolumeResponse response = filerClient.getBlockingStub().assignVolume(
                FilerProto.AssignVolumeRequest.newBuilder()
                        .setCollection(filerClient.getCollection())
-                        .setReplication(replication == null ? filerClient.getReplication() : replication)
+                        .setReplication(Strings.isNullOrEmpty(replication) ? filerClient.getReplication() : replication)
                        .setDataCenter("")
                        .setTtlSec(0)
                        .setPath(path)
                        .build());
+
+        if (!Strings.isNullOrEmpty(response.getError())) {
+            throw new IOException(response.getError());
+        }
+
        String fileId = response.getFileId();
        String auth = response.getAuth();

@@ -26,6 +26,13 @@ public class VolumeIdCache {
        return this.cache.getIfPresent(volumeId);
    }

+    public void clearLocations(String volumeId) {
+        if (this.cache == null) {
+            return;
+        }
+        this.cache.invalidate(volumeId);
+    }
+
    public void setLocations(String volumeId, FilerProto.Locations locations) {
        if (this.cache == null) {
            return;
@@ -67,6 +67,8 @@ service SeaweedFiler {
    rpc KvPut (KvPutRequest) returns (KvPutResponse) {
    }

+    rpc DownloadToLocal (DownloadToLocalRequest) returns (DownloadToLocalResponse) {
+    }
 }

 //////////////////////////////////////////////////
@@ -92,6 +94,13 @@ message ListEntriesResponse {
    Entry entry = 1;
 }

+message RemoteEntry {
+    string storage_name = 1;
+    int64 last_local_sync_ts_ns = 2;
+    string remote_e_tag = 3;
+    int64 remote_mtime = 4;
+    int64 remote_size = 5;
+}
 message Entry {
    string name = 1;
    bool is_directory = 2;
@@ -101,6 +110,8 @@ message Entry {
    bytes hard_link_id = 7;
    int32 hard_link_counter = 8; // only exists in hard link meta data
    bytes content = 9; // if not empty, the file content
+
+    RemoteEntry remote_entry = 10;
 }

 message FullEntry {
@@ -208,6 +219,7 @@ message AtomicRenameEntryRequest {
    string old_name = 2;
    string new_directory = 3;
    string new_name = 4;
+    repeated int32 signatures = 5;
 }

 message AtomicRenameEntryResponse {
@@ -292,6 +304,8 @@ message GetFilerConfigurationResponse {
    int32 signature = 8;
    string metrics_address = 9;
    int32 metrics_interval_sec = 10;
+    string version = 11;
+    string cluster_id = 12;
 }

 message SubscribeMetadataRequest {
@@ -299,6 +313,7 @@ message SubscribeMetadataRequest {
    string path_prefix = 2;
    int64 since_ns = 3;
    int32 signature = 4;
+    repeated string path_prefixes = 6;
 }
 message SubscribeMetadataResponse {
    string directory = 1;
@@ -323,6 +338,7 @@ message KeepConnectedResponse {
 message LocateBrokerRequest {
    string resource = 1;
 }
+
 message LocateBrokerResponse {
    bool found = 1;
    // if found, send the exact address
@@ -334,7 +350,9 @@ message LocateBrokerResponse {
    repeated Resource resources = 2;
 }

+/////////////////////////
 // Key-Value operations
+/////////////////////////
 message KvGetRequest {
    bytes key = 1;
 }
@@ -350,7 +368,9 @@ message KvPutResponse {
    string error = 1;
 }

+/////////////////////////
 // path-based configurations
+/////////////////////////
 message FilerConf {
    int32 version = 1;
    message PathConf {
@@ -361,6 +381,18 @@ message FilerConf {
        string disk_type = 5;
        bool fsync = 6;
        uint32 volume_growth_count = 7;
+        bool read_only = 8;
    }
    repeated PathConf locations = 2;
 }
+
+/////////////////////////
+// Remote Storage related
+/////////////////////////
+message DownloadToLocalRequest {
+    string directory = 1;
+    string name = 2;
+}
+message DownloadToLocalResponse {
+    Entry entry = 1;
+}
@@ -11,13 +11,13 @@
        <dependency>
            <groupId>com.github.chrislusf</groupId>
            <artifactId>seaweedfs-client</artifactId>
-            <version>1.6.4</version>
+            <version>1.6.7</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.github.chrislusf</groupId>
            <artifactId>seaweedfs-hadoop2-client</artifactId>
-            <version>1.6.4</version>
+            <version>1.6.7</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
@@ -301,7 +301,7 @@
    </snapshotRepository>
  </distributionManagement>
  <properties>
-    <seaweedfs.client.version>1.6.4</seaweedfs.client.version>
+    <seaweedfs.client.version>1.6.7</seaweedfs.client.version>
    <hadoop.version>2.9.2</hadoop.version>
  </properties>
 </project>
@@ -5,7 +5,7 @@
    <modelVersion>4.0.0</modelVersion>

    <properties>
-        <seaweedfs.client.version>1.6.4</seaweedfs.client.version>
+        <seaweedfs.client.version>1.6.7</seaweedfs.client.version>
        <hadoop.version>2.9.2</hadoop.version>
    </properties>

@@ -309,7 +309,7 @@
    </snapshotRepository>
  </distributionManagement>
  <properties>
-    <seaweedfs.client.version>1.6.4</seaweedfs.client.version>
+    <seaweedfs.client.version>1.6.7</seaweedfs.client.version>
    <hadoop.version>3.1.1</hadoop.version>
  </properties>
 </project>
@@ -5,7 +5,7 @@
    <modelVersion>4.0.0</modelVersion>

    <properties>
-        <seaweedfs.client.version>1.6.4</seaweedfs.client.version>
+        <seaweedfs.client.version>1.6.7</seaweedfs.client.version>
        <hadoop.version>3.1.1</hadoop.version>
    </properties>

@@ -1,4 +1,4 @@
-package load_test_leveldb
+package main

 import (
 	"crypto/md5"
@@ -0,0 +1,80 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"google.golang.org/grpc"
+	"strconv"
+	"time"
+)
+
+var (
+	dir       = flag.String("dir", "/tmp", "directory to create files")
+	n         = flag.Int("n", 100, "the number of metadata")
+	tailFiler = flag.String("filer", "localhost:8888", "the filer address")
+	isWrite   = flag.Bool("write", false, "only write")
+)
+
+func main() {
+
+	flag.Parse()
+
+	if *isWrite {
+		startGenerateMetadata()
+		return
+	}
+
+	expected := 0
+	startSubscribeMetadata(func(event *filer_pb.SubscribeMetadataResponse) error {
+		if event.Directory != *dir {
+			return nil
+		}
+		name := event.EventNotification.NewEntry.Name
+		glog.V(0).Infof("=> %s ts:%+v", name, time.Unix(0, event.TsNs))
+		id := name[4:]
+		if x, err := strconv.Atoi(id); err == nil {
+			if x != expected {
+				return fmt.Errorf("Expected file%d Actual %s\n", expected, name)
+			}
+			expected++
+		} else {
+			return err
+		}
+		time.Sleep(10 * time.Millisecond)
+		return nil
+	})
+
+}
+
+func startGenerateMetadata() {
+	pb.WithFilerClient(*tailFiler, grpc.WithInsecure(), func(client filer_pb.SeaweedFilerClient) error {
+
+		for i := 0; i < *n; i++ {
+			name := fmt.Sprintf("file%d", i)
+			if err := filer_pb.CreateEntry(client, &filer_pb.CreateEntryRequest{
+				Directory: *dir,
+				Entry: &filer_pb.Entry{
+					Name: name,
+				},
+			}); err != nil {
+				fmt.Printf("create entry %s: %v\n", name, err)
+				return err
+			}
+		}
+
+		return nil
+
+	})
+}
+
+func startSubscribeMetadata(eachEntryFunc func(event *filer_pb.SubscribeMetadataResponse) error) {
+
+	tailErr := pb.FollowMetadata(*tailFiler, grpc.WithInsecure(), "tail", *dir, nil, 0, 0, eachEntryFunc, false)
+
+	if tailErr != nil {
+		fmt.Printf("tail %s: %v\n", *tailFiler, tailErr)
+	}
+}
@@ -65,7 +65,16 @@ func genFile(grpcDialOption grpc.DialOption, i int) (*operation.AssignResult, st

 	targetUrl := fmt.Sprintf("http://%s/%s", assignResult.Url, assignResult.Fid)

-	_, err = operation.UploadData(targetUrl, fmt.Sprintf("test%d", i), false, data, false, "bench/test", nil, assignResult.Auth)
+	uploadOption := &operation.UploadOption{
+		UploadUrl:         targetUrl,
+		Filename:          fmt.Sprintf("test%d", i),
+		Cipher:            false,
+		IsInputCompressed: true,
+		MimeType:          "bench/test",
+		PairMap:           nil,
+		Jwt:               assignResult.Auth,
+	}
+	_, err = operation.UploadData(data, uploadOption)
 	if err != nil {
 		log.Fatalf("upload: %v", err)
 	}
@@ -60,7 +60,7 @@ func walkMetaFile(dst *os.File) error {

 		fmt.Fprintf(os.Stdout, "file %s %v\n", util.FullPath(fullEntry.Dir).Child(fullEntry.Entry.Name), fullEntry.Entry.Attributes.String())
 		for i, chunk := range fullEntry.Entry.Chunks {
-			fmt.Fprintf(os.Stdout, "  chunk %d %v\n", i+1, chunk.String())
+			fmt.Fprintf(os.Stdout, "  chunk: %d %v %d,%x%08x\n", i+1, chunk, chunk.Fid.VolumeId, chunk.Fid.FileKey, chunk.Fid.Cookie)
 		}

 	}
@@ -16,7 +16,7 @@ debug_shell:

 debug_mount:
 	go build -gcflags="all=-N -l"
-	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 mount -dir=~/tmp/mm -cacheCapacityMB=0 -filer.path=/buckets
+	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 mount -dir=~/tmp/mm -cacheCapacityMB=0 -filer.path=/

 debug_server:
 	go build -gcflags="all=-N -l"
@@ -37,3 +37,16 @@ debug_s3:
 debug_filer_copy:
 	go build -gcflags="all=-N -l"
 	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 filer.backup -filer=localhost:8888 -filerProxy -timeAgo=10h
+
+debug_filer_remote_sync_dir:
+	go build -gcflags="all=-N -l"
+	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 filer.remote.sync -filer="localhost:8888" -dir=/buckets/b2 -timeAgo=1h
+
+debug_filer_remote_sync_buckets:
+	go build -gcflags="all=-N -l"
+	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 filer.remote.sync -filer="localhost:8888" -createBucketAt=cloud1 -timeAgo=1h
+
+debug_master_follower:
+	go build -gcflags="all=-N -l"
+	dlv --listen=:2345 --headless=true --api-version=2 --accept-multiclient exec weed -- -v=4 master.follower
+
@@ -0,0 +1,109 @@
+package command
+
+import (
+	"fmt"
+	flag "github.com/chrislusf/seaweedfs/weed/util/fla9"
+	"github.com/posener/complete"
+	completeinstall "github.com/posener/complete/cmd/install"
+	"runtime"
+)
+
+func AutocompleteMain(commands []*Command) bool {
+	subCommands := make(map[string]complete.Command)
+	helpSubCommands := make(map[string]complete.Command)
+	for _, cmd := range commands {
+		flags := make(map[string]complete.Predictor)
+		cmd.Flag.VisitAll(func(flag *flag.Flag) {
+			flags["-"+flag.Name] = complete.PredictAnything
+		})
+
+		subCommands[cmd.Name()] = complete.Command{
+			Flags: flags,
+		}
+		helpSubCommands[cmd.Name()] = complete.Command{}
+	}
+	subCommands["help"] = complete.Command{Sub: helpSubCommands}
+
+	globalFlags := make(map[string]complete.Predictor)
+	flag.VisitAll(func(flag *flag.Flag) {
+		globalFlags["-"+flag.Name] = complete.PredictAnything
+	})
+
+	weedCmd := complete.Command{
+		Sub:         subCommands,
+		Flags:       globalFlags,
+		GlobalFlags: complete.Flags{"-h": complete.PredictNothing},
+	}
+	cmp := complete.New("weed", weedCmd)
+
+	return cmp.Complete()
+}
+
+func installAutoCompletion() bool {
+	if runtime.GOOS == "windows" {
+		fmt.Println("windows is not supported")
+		return false
+	}
+
+	err := completeinstall.Install("weed")
+	if err != nil {
+		fmt.Printf("install failed! %s\n", err)
+		return false
+	}
+	fmt.Printf("autocompletion is enabled. Please restart your shell.\n")
+	return true
+}
+
+func uninstallAutoCompletion() bool {
+	if runtime.GOOS == "windows" {
+		fmt.Println("windows is not supported")
+		return false
+	}
+
+	err := completeinstall.Uninstall("weed")
+	if err != nil {
+		fmt.Printf("uninstall failed! %s\n", err)
+		return false
+	}
+	fmt.Printf("autocompletion is disable. Please restart your shell.\n")
+	return true
+}
+
+var cmdAutocomplete = &Command{
+	Run:       runAutocomplete,
+	UsageLine: "autocomplete",
+	Short:     "install autocomplete",
+	Long: `weed autocomplete is installed in the shell.
+
+    Supported shells are bash, zsh, and fish.
+    Windows is not supported.
+
+`,
+}
+
+func runAutocomplete(cmd *Command, args []string) bool {
+	if len(args) != 0 {
+		cmd.Usage()
+	}
+
+	return installAutoCompletion()
+}
+
+var cmdUnautocomplete = &Command{
+	Run:       runUnautocomplete,
+	UsageLine: "autocomplete.uninstall",
+	Short:     "uninstall autocomplete",
+	Long: `weed autocomplete is uninstalled in the shell.
+
+    Windows is not supported.
+
+`,
+}
+
+func runUnautocomplete(cmd *Command, args []string) bool {
+	if len(args) != 0 {
+		cmd.Usage()
+	}
+
+	return uninstallAutoCompletion()
+}
@@ -72,7 +72,7 @@ func runBackup(cmd *Command, args []string) bool {
 	vid := needle.VolumeId(*s.volumeId)

 	// find volume location, replication, ttl info
-	lookup, err := operation.Lookup(func() string { return *s.master }, vid.String())
+	lookup, err := operation.LookupVolumeId(func() string { return *s.master }, grpcDialOption, vid.String())
 	if err != nil {
 		fmt.Printf("Error looking up volume %d: %v\n", vid, err)
 		return true
@@ -212,7 +212,7 @@ func writeFiles(idChan chan int, fileIdLineChan chan string, s *stat) {
 				}
 				var jwtAuthorization security.EncodedJwt
 				if isSecure {
-					jwtAuthorization = operation.LookupJwt(b.masterClient.GetMaster(), df.fp.Fid)
+					jwtAuthorization = operation.LookupJwt(b.masterClient.GetMaster(), b.grpcDialOption, df.fp.Fid)
 				}
 				if e := util.Delete(fmt.Sprintf("http://%s/%s", df.fp.Server, df.fp.Fid), string(jwtAuthorization)); e == nil {
 					s.completed++
@@ -8,22 +8,26 @@ import (
 )

 var Commands = []*Command{
-	cmdBenchmark,
+	cmdAutocomplete,
+	cmdUnautocomplete,
 	cmdBackup,
+	cmdBenchmark,
 	cmdCompact,
-	cmdCopy,
 	cmdDownload,
 	cmdExport,
 	cmdFiler,
 	cmdFilerBackup,
 	cmdFilerCat,
+	cmdFilerCopy,
 	cmdFilerMetaBackup,
 	cmdFilerMetaTail,
+	cmdFilerRemoteSynchronize,
 	cmdFilerReplicate,
 	cmdFilerSynchronize,
 	cmdFix,
-	cmdGateway,
+	cmdFuse,
 	cmdMaster,
+	cmdMasterFollower,
 	cmdMount,
 	cmdS3,
 	cmdIam,
@@ -2,6 +2,8 @@ package command

 import (
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/security"
+	"google.golang.org/grpc"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -43,20 +45,23 @@ var cmdDownload = &Command{
 }

 func runDownload(cmd *Command, args []string) bool {
+	util.LoadConfiguration("security", false)
+	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
+
 	for _, fid := range args {
-		if e := downloadToFile(func() string { return *d.server }, fid, util.ResolvePath(*d.dir)); e != nil {
+		if e := downloadToFile(func() string { return *d.server }, grpcDialOption, fid, util.ResolvePath(*d.dir)); e != nil {
 			fmt.Println("Download Error: ", fid, e)
 		}
 	}
 	return true
 }

-func downloadToFile(masterFn operation.GetMasterFn, fileId, saveDir string) error {
-	fileUrl, lookupError := operation.LookupFileId(masterFn, fileId)
+func downloadToFile(masterFn operation.GetMasterFn, grpcDialOption grpc.DialOption, fileId, saveDir string) error {
+	fileUrl, jwt, lookupError := operation.LookupFileId(masterFn, grpcDialOption, fileId)
 	if lookupError != nil {
 		return lookupError
 	}
-	filename, _, rc, err := util.DownloadFile(fileUrl)
+	filename, _, rc, err := util.DownloadFile(fileUrl, jwt)
 	if err != nil {
 		return err
 	}
@@ -83,7 +88,7 @@ func downloadToFile(masterFn operation.GetMasterFn, fileId, saveDir string) erro
 		fids := strings.Split(string(content), "\n")
 		for _, partId := range fids {
 			var n int
-			_, part, err := fetchContent(masterFn, partId)
+			_, part, err := fetchContent(masterFn, grpcDialOption, partId)
 			if err == nil {
 				n, err = f.Write(part)
 			}
@@ -103,13 +108,13 @@ func downloadToFile(masterFn operation.GetMasterFn, fileId, saveDir string) erro
 	return nil
 }

-func fetchContent(masterFn operation.GetMasterFn, fileId string) (filename string, content []byte, e error) {
-	fileUrl, lookupError := operation.LookupFileId(masterFn, fileId)
+func fetchContent(masterFn operation.GetMasterFn, grpcDialOption grpc.DialOption, fileId string) (filename string, content []byte, e error) {
+	fileUrl, jwt, lookupError := operation.LookupFileId(masterFn, grpcDialOption, fileId)
 	if lookupError != nil {
 		return "", nil, lookupError
 	}
 	var rc *http.Response
-	if filename, _, rc, e = util.DownloadFile(fileUrl); e != nil {
+	if filename, _, rc, e = util.DownloadFile(fileUrl, jwt); e != nil {
 		return "", nil, e
 	}
 	defer util.CloseResponse(rc)
@@ -50,6 +50,8 @@ type FilerOptions struct {
 	saveToFilerLimit        *int
 	defaultLevelDbDirectory *string
 	concurrentUploadLimitMB *int
+	debug                   *bool
+	debugPort               *int
 }

 func init() {
@@ -73,6 +75,8 @@ func init() {
 	f.saveToFilerLimit = cmdFiler.Flag.Int("saveToFilerLimit", 0, "files smaller than this limit will be saved in filer store")
 	f.defaultLevelDbDirectory = cmdFiler.Flag.String("defaultStoreDir", ".", "if filer.toml is empty, use an embedded filer store in the directory")
 	f.concurrentUploadLimitMB = cmdFiler.Flag.Int("concurrentUploadLimitMB", 128, "limit total concurrent upload size")
+	f.debug = cmdFiler.Flag.Bool("debug", false, "serves runtime profiling data, e.g., http://localhost:<debug.port>/debug/pprof/goroutine?debug=2")
+	f.debugPort = cmdFiler.Flag.Int("debug.port", 6060, "http port for debugging")

 	// start s3 on filer
 	filerStartS3 = cmdFiler.Flag.Bool("s3", false, "whether to start S3 gateway")
@@ -122,6 +126,9 @@ var cmdFiler = &Command{
 }

 func runFiler(cmd *Command, args []string) bool {
+	if *f.debug {
+		go http.ListenAndServe(fmt.Sprintf(":%d", *f.debugPort), nil)
+	}

 	util.LoadConfiguration("security", false)

@@ -1,16 +1,13 @@
 package command

 import (
-	"context"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb"
-	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/replication/source"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"google.golang.org/grpc"
-	"io"
 	"time"
 )

@@ -52,11 +49,11 @@ var cmdFilerBackup = &Command{

 func runFilerBackup(cmd *Command, args []string) bool {

-	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
-
 	util.LoadConfiguration("security", false)
 	util.LoadConfiguration("replication", true)

+	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
+
 	for {
 		err := doFilerBackup(grpcDialOption, &filerBackupOptions)
 		if err != nil {
@@ -110,48 +107,12 @@ func doFilerBackup(grpcDialOption grpc.DialOption, backupOption *FilerBackupOpti

 	processEventFn := genProcessFunction(sourcePath, targetPath, dataSink, debug)

-	return pb.WithFilerClient(sourceFiler, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-
-		ctx, cancel := context.WithCancel(context.Background())
-		defer cancel()
-
-		stream, err := client.SubscribeMetadata(ctx, &filer_pb.SubscribeMetadataRequest{
-			ClientName: "backup_" + dataSink.GetName(),
-			PathPrefix: sourcePath,
-			SinceNs:    startFrom.UnixNano(),
-		})
-		if err != nil {
-			return fmt.Errorf("listen: %v", err)
-		}
-
-		var counter int64
-		var lastWriteTime time.Time
-		for {
-			resp, listenErr := stream.Recv()
-
-			if listenErr == io.EOF {
-				return nil
-			}
-			if listenErr != nil {
-				return listenErr
-			}
-
-			if err := processEventFn(resp); err != nil {
-				return fmt.Errorf("processEventFn: %v", err)
-			}
-
-			counter++
-			if lastWriteTime.Add(3 * time.Second).Before(time.Now()) {
-				glog.V(0).Infof("backup %s progressed to %v %0.2f/sec", sourceFiler, time.Unix(0, resp.TsNs), float64(counter)/float64(3))
-				counter = 0
-				lastWriteTime = time.Now()
-				if err := setOffset(grpcDialOption, sourceFiler, BackupKeyPrefix, int32(sinkId), resp.TsNs); err != nil {
-					return fmt.Errorf("setOffset: %v", err)
-				}
-			}
-
-		}
-
+	processEventFnWithOffset := pb.AddOffsetFunc(processEventFn, 3*time.Second, func(counter int64, lastTsNs int64) error {
+		glog.V(0).Infof("backup %s progressed to %v %0.2f/sec", sourceFiler, time.Unix(0, lastTsNs), float64(counter)/float64(3))
+		return setOffset(grpcDialOption, sourceFiler, BackupKeyPrefix, int32(sinkId), lastTsNs)
 	})

+	return pb.FollowMetadata(sourceFiler, grpcDialOption, "backup_"+dataSink.GetName(),
+		sourcePath, nil, startFrom.UnixNano(), 0, processEventFnWithOffset, false)
+
 }
@@ -108,6 +108,11 @@ func runFilerCat(cmd *Command, args []string) bool {
 			return err
 		}

+		if len(respLookupEntry.Entry.Content) > 0 {
+			_, err = writer.Write(respLookupEntry.Entry.Content)
+			return err
+		}
+
 		filerCat.filerClient = client

 		return filer.StreamContent(&filerCat, writer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64)
@@ -52,21 +52,21 @@ type CopyOptions struct {
 }

 func init() {
-	cmdCopy.Run = runCopy // break init cycle
-	cmdCopy.IsDebug = cmdCopy.Flag.Bool("debug", false, "verbose debug information")
-	copy.include = cmdCopy.Flag.String("include", "", "pattens of files to copy, e.g., *.pdf, *.html, ab?d.txt, works together with -dir")
-	copy.replication = cmdCopy.Flag.String("replication", "", "replication type")
-	copy.collection = cmdCopy.Flag.String("collection", "", "optional collection name")
-	copy.ttl = cmdCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
-	copy.diskType = cmdCopy.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
-	copy.maxMB = cmdCopy.Flag.Int("maxMB", 4, "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.checkSize = cmdCopy.Flag.Bool("check.size", false, "copy when the target file size is different from the source file")
-	copy.verbose = cmdCopy.Flag.Bool("verbose", false, "print out details during copying")
+	cmdFilerCopy.Run = runCopy // break init cycle
+	cmdFilerCopy.IsDebug = cmdFilerCopy.Flag.Bool("debug", false, "verbose debug information")
+	copy.include = cmdFilerCopy.Flag.String("include", "", "pattens of files to copy, e.g., *.pdf, *.html, ab?d.txt, works together with -dir")
+	copy.replication = cmdFilerCopy.Flag.String("replication", "", "replication type")
+	copy.collection = cmdFilerCopy.Flag.String("collection", "", "optional collection name")
+	copy.ttl = cmdFilerCopy.Flag.String("ttl", "", "time to live, e.g.: 1m, 1h, 1d, 1M, 1y")
+	copy.diskType = cmdFilerCopy.Flag.String("disk", "", "[hdd|ssd|<tag>] hard drive or solid state drive or any tag")
+	copy.maxMB = cmdFilerCopy.Flag.Int("maxMB", 4, "split files larger than the limit")
+	copy.concurrenctFiles = cmdFilerCopy.Flag.Int("c", 8, "concurrent file copy goroutines")
+	copy.concurrenctChunks = cmdFilerCopy.Flag.Int("concurrentChunks", 8, "concurrent chunk copy goroutines for each file")
+	copy.checkSize = cmdFilerCopy.Flag.Bool("check.size", false, "copy when the target file size is different from the source file")
+	copy.verbose = cmdFilerCopy.Flag.Bool("verbose", false, "print out details during copying")
 }

-var cmdCopy = &Command{
+var cmdFilerCopy = &Command{
 	UsageLine: "filer.copy file_or_dir1 [file_or_dir2 file_or_dir3] http://localhost:8888/path/to/a/folder/",
 	Short:     "copy one or a list of files to a filer folder",
 	Long: `copy one or a list of files, or batch copy one whole folder recursively, to a filer folder
@@ -154,7 +154,7 @@ func runCopy(cmd *Command, args []string) bool {
 	}
 	copy.ttlSec = int32(ttl.Minutes()) * 60

-	if *cmdCopy.IsDebug {
+	if *cmdFilerCopy.IsDebug {
 		grace.SetupProfiling("filer.copy.cpu.pprof", "filer.copy.mem.pprof")
 	}

@@ -213,11 +213,15 @@ func genFileCopyTask(fileOrDir string, destPath string, fileCopyTaskChan chan Fi

 	mode := fi.Mode()
 	uid, gid := util.GetFileUidGid(fi)
+	fileSize := fi.Size()
+	if mode.IsDir() {
+		fileSize = 0
+	}

 	fileCopyTaskChan <- FileCopyTask{
 		sourceLocation:     fileOrDir,
 		destinationUrlPath: destPath,
-		fileSize:           fi.Size(),
+		fileSize:           fileSize,
 		fileMode:           fi.Mode(),
 		uid:                uid,
 		gid:                gid,
@@ -377,6 +381,9 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 				if assignResult.Error != "" {
 					return fmt.Errorf("assign volume failure %v: %v", request, assignResult.Error)
 				}
+				if assignResult.Url == "" {
+					return fmt.Errorf("assign volume failure %v: %v", request, assignResult)
+				}
 				return nil
 			})
 		})
@@ -385,8 +392,16 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 		}

 		targetUrl := "http://" + assignResult.Url + "/" + assignResult.FileId
-
-		uploadResult, err := operation.UploadData(targetUrl, fileName, worker.options.cipher, data, false, mimeType, nil, security.EncodedJwt(assignResult.Auth))
+		uploadOption := &operation.UploadOption{
+			UploadUrl:         targetUrl,
+			Filename:          fileName,
+			Cipher:            worker.options.cipher,
+			IsInputCompressed: false,
+			MimeType:          mimeType,
+			PairMap:           nil,
+			Jwt:               security.EncodedJwt(assignResult.Auth),
+		}
+		uploadResult, err := operation.UploadData(data, uploadOption)
 		if err != nil {
 			return fmt.Errorf("upload data %v to %s: %v\n", fileName, targetUrl, err)
 		}
@@ -491,7 +506,16 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 				replication = assignResult.Replication
 			}

-			uploadResult, err, _ := operation.Upload(targetUrl, fileName+"-"+strconv.FormatInt(i+1, 10), worker.options.cipher, io.NewSectionReader(f, i*chunkSize, chunkSize), false, "", nil, security.EncodedJwt(assignResult.Auth))
+			uploadOption := &operation.UploadOption{
+				UploadUrl:         targetUrl,
+				Filename:          fileName+"-"+strconv.FormatInt(i+1, 10),
+				Cipher:            worker.options.cipher,
+				IsInputCompressed: false,
+				MimeType:          "",
+				PairMap:           nil,
+				Jwt:               security.EncodedJwt(assignResult.Auth),
+			}
+			uploadResult, err, _ := operation.Upload(io.NewSectionReader(f, i*chunkSize, chunkSize), uploadOption)
 			if err != nil {
 				uploadError = fmt.Errorf("upload data %v to %s: %v\n", fileName, targetUrl, err)
 				return
@@ -524,6 +548,11 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 		return uploadError
 	}

+	manifestedChunks, manifestErr := filer.MaybeManifestize(worker.saveDataAsChunk, chunks)
+	if manifestErr != nil {
+		return fmt.Errorf("create manifest: %v", manifestErr)
+	}
+
 	if err := pb.WithGrpcFilerClient(worker.filerGrpcAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
 		request := &filer_pb.CreateEntryRequest{
 			Directory: task.destinationUrlPath,
@@ -541,7 +570,7 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 					Collection:  collection,
 					TtlSec:      worker.options.ttlSec,
 				},
-				Chunks: chunks,
+				Chunks: manifestedChunks,
 			},
 		}

@@ -576,3 +605,63 @@ func detectMimeType(f *os.File) string {
 	}
 	return mimeType
 }
+
+func (worker *FileCopyWorker) saveDataAsChunk(reader io.Reader, name string, offset int64) (chunk *filer_pb.FileChunk, collection, replication string, err error) {
+
+	var fileId, host string
+	var auth security.EncodedJwt
+
+	if flushErr := pb.WithGrpcFilerClient(worker.filerGrpcAddress, 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.Url, security.EncodedJwt(resp.Auth)
+			collection, replication = resp.Collection, resp.Replication
+
+			return nil
+		})
+		if assignErr != nil {
+			return assignErr
+		}
+
+		return nil
+	}); flushErr != nil {
+		return nil, collection, replication, 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, collection, replication, fmt.Errorf("upload data: %v", flushErr)
+	}
+	if uploadResult.Error != "" {
+		return nil, collection, replication, fmt.Errorf("upload result: %v", uploadResult.Error)
+	}
+	return uploadResult.ToPbFileChunk(fileId, offset), collection, replication, nil
+}
@@ -7,7 +7,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/spf13/viper"
 	"google.golang.org/grpc"
-	"io"
 	"reflect"
 	"time"

@@ -53,6 +52,7 @@ The backup writes to another filer store specified in a backup_filer.toml.

 func runFilerMetaBackup(cmd *Command, args []string) bool {

+	util.LoadConfiguration("security", false)
 	metaBackup.grpcDialOption = security.LoadClientTLS(util.GetViper(), "grpc.client")

 	// load backup_filer.toml
@@ -189,48 +189,15 @@ func (metaBackup *FilerMetaBackupOptions) streamMetadataBackup() error {
 		return nil
 	}

-	tailErr := pb.WithFilerClient(*metaBackup.filerAddress, metaBackup.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-
-		ctx, cancel := context.WithCancel(context.Background())
-		defer cancel()
-
-		stream, err := client.SubscribeMetadata(ctx, &filer_pb.SubscribeMetadataRequest{
-			ClientName: "meta_backup",
-			PathPrefix: *metaBackup.filerDirectory,
-			SinceNs:    startTime.UnixNano(),
-		})
-		if err != nil {
-			return fmt.Errorf("listen: %v", err)
-		}
-
-		var counter int64
-		var lastWriteTime time.Time
-		for {
-			resp, listenErr := stream.Recv()
-			if listenErr == io.EOF {
-				return nil
-			}
-			if listenErr != nil {
-				return listenErr
-			}
-			if err = eachEntryFunc(resp); err != nil {
-				return err
-			}
-
-			counter++
-			if lastWriteTime.Add(3 * time.Second).Before(time.Now()) {
-				glog.V(0).Infof("meta backup %s progressed to %v %0.2f/sec", *metaBackup.filerAddress, time.Unix(0, resp.TsNs), float64(counter)/float64(3))
-				counter = 0
-				lastWriteTime = time.Now()
-				if err2 := metaBackup.setOffset(lastWriteTime); err2 != nil {
-					return err2
-				}
-			}
-
-		}
-
+	processEventFnWithOffset := pb.AddOffsetFunc(eachEntryFunc, 3*time.Second, func(counter int64, lastTsNs int64) error {
+		lastTime := time.Unix(0, lastTsNs)
+		glog.V(0).Infof("meta backup %s progressed to %v %0.2f/sec", *metaBackup.filerAddress, lastTime, float64(counter)/float64(3))
+		return metaBackup.setOffset(lastTime)
 	})
-	return tailErr
+
+	return pb.FollowMetadata(*metaBackup.filerAddress, metaBackup.grpcDialOption, "meta_backup",
+		*metaBackup.filerDirectory, nil, startTime.UnixNano(), 0, processEventFnWithOffset, false)
+
 }

 func (metaBackup *FilerMetaBackupOptions) getOffset() (lastWriteTime time.Time, err error) {
@@ -3,16 +3,15 @@ package command
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb"
 	"github.com/golang/protobuf/jsonpb"
 	jsoniter "github.com/json-iterator/go"
 	"github.com/olivere/elastic/v7"
-	"io"
 	"os"
 	"path/filepath"
 	"strings"
 	"time"

-	"github.com/chrislusf/seaweedfs/weed/pb"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/chrislusf/seaweedfs/weed/util"
@@ -45,6 +44,7 @@ var (

 func runFilerMetaTail(cmd *Command, args []string) bool {

+	util.LoadConfiguration("security", false)
 	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")

 	var filterFunc func(dir, fname string) bool
@@ -103,37 +103,18 @@ func runFilerMetaTail(cmd *Command, args []string) bool {
 		}
 	}

-	tailErr := pb.WithFilerClient(*tailFiler, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-
-		ctx, cancel := context.WithCancel(context.Background())
-		defer cancel()
-
-		stream, err := client.SubscribeMetadata(ctx, &filer_pb.SubscribeMetadataRequest{
-			ClientName: "tail",
-			PathPrefix: *tailTarget,
-			SinceNs:    time.Now().Add(-*tailStart).UnixNano(),
-		})
-		if err != nil {
-			return fmt.Errorf("listen: %v", err)
-		}
-
-		for {
-			resp, listenErr := stream.Recv()
-			if listenErr == io.EOF {
+	tailErr := pb.FollowMetadata(*tailFiler, grpcDialOption, "tail",
+		*tailTarget, nil, time.Now().Add(-*tailStart).UnixNano(), 0,
+		func(resp *filer_pb.SubscribeMetadataResponse) error {
+			if !shouldPrint(resp) {
 				return nil
 			}
-			if listenErr != nil {
-				return listenErr
-			}
-			if !shouldPrint(resp) {
-				continue
-			}
-			if err = eachEntryFunc(resp); err != nil {
+			if err := eachEntryFunc(resp); err != nil {
 				return err
 			}
-		}
+			return nil
+		}, false)

-	})
 	if tailErr != nil {
 		fmt.Printf("tail %s: %v\n", *tailFiler, tailErr)
 	}
@@ -0,0 +1,145 @@
+package command
+
+import (
+	"context"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
+	"github.com/chrislusf/seaweedfs/weed/replication/source"
+	"github.com/chrislusf/seaweedfs/weed/security"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"google.golang.org/grpc"
+	"os"
+	"time"
+)
+
+type RemoteSyncOptions struct {
+	filerAddress             *string
+	grpcDialOption           grpc.DialOption
+	readChunkFromFiler       *bool
+	debug                    *bool
+	timeAgo                  *time.Duration
+	dir                      *string
+	createBucketAt           *string
+	createBucketRandomSuffix *bool
+
+	mappings    *remote_pb.RemoteStorageMapping
+	remoteConfs map[string]*remote_pb.RemoteConf
+	bucketsDir  string
+}
+
+var _ = filer_pb.FilerClient(&RemoteSyncOptions{})
+
+func (option *RemoteSyncOptions) WithFilerClient(fn func(filer_pb.SeaweedFilerClient) error) error {
+	return pb.WithFilerClient(*option.filerAddress, option.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+		return fn(client)
+	})
+}
+func (option *RemoteSyncOptions) AdjustedUrl(location *filer_pb.Location) string {
+	return location.Url
+}
+
+var (
+	remoteSyncOptions RemoteSyncOptions
+)
+
+func init() {
+	cmdFilerRemoteSynchronize.Run = runFilerRemoteSynchronize // break init cycle
+	remoteSyncOptions.filerAddress = cmdFilerRemoteSynchronize.Flag.String("filer", "localhost:8888", "filer of the SeaweedFS cluster")
+	remoteSyncOptions.dir = cmdFilerRemoteSynchronize.Flag.String("dir", "", "a mounted directory on filer")
+	remoteSyncOptions.createBucketAt = cmdFilerRemoteSynchronize.Flag.String("createBucketAt", "", "one remote storage name to create new buckets in")
+	remoteSyncOptions.createBucketRandomSuffix = cmdFilerRemoteSynchronize.Flag.Bool("createBucketWithRandomSuffix", true, "add randomized suffix to bucket name to avoid conflicts")
+	remoteSyncOptions.readChunkFromFiler = cmdFilerRemoteSynchronize.Flag.Bool("filerProxy", false, "read file chunks from filer instead of volume servers")
+	remoteSyncOptions.debug = cmdFilerRemoteSynchronize.Flag.Bool("debug", false, "debug mode to print out filer updated remote files")
+	remoteSyncOptions.timeAgo = cmdFilerRemoteSynchronize.Flag.Duration("timeAgo", 0, "start time before now. \"300ms\", \"1.5h\" or \"2h45m\". Valid time units are \"ns\", \"us\" (or \"µs\"), \"ms\", \"s\", \"m\", \"h\"")
+}
+
+var cmdFilerRemoteSynchronize = &Command{
+	UsageLine: "filer.remote.sync",
+	Short:     "resumable continuously write back updates to remote storage",
+	Long: `resumable continuously write back updates to remote storage
+
+	filer.remote.sync listens on filer update events. 
+	If any mounted remote file is updated, it will fetch the updated content,
+	and write to the remote storage.
+
+	There are two modes:
+
+	1)By default, watch /buckets folder and write back all changes.
+
+		# if there is only one remote storage configured
+		weed filer.remote.sync
+		# if there are multiple remote storages configured
+		# specify a remote storage to create new buckets.
+		weed filer.remote.sync -createBucketAt=cloud1
+
+	2)Write back one mounted folder to remote storage
+
+		weed filer.remote.sync -dir=/mount/s3_on_cloud
+
+
+`,
+}
+
+func runFilerRemoteSynchronize(cmd *Command, args []string) bool {
+
+	util.LoadConfiguration("security", false)
+	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
+	remoteSyncOptions.grpcDialOption = grpcDialOption
+
+	dir := *remoteSyncOptions.dir
+	filerAddress := *remoteSyncOptions.filerAddress
+
+	filerSource := &source.FilerSource{}
+	filerSource.DoInitialize(
+		filerAddress,
+		pb.ServerToGrpcAddress(filerAddress),
+		"/", // does not matter
+		*remoteSyncOptions.readChunkFromFiler,
+	)
+
+	remoteSyncOptions.bucketsDir = "/buckets"
+	// check buckets again
+	remoteSyncOptions.WithFilerClient(func(filerClient filer_pb.SeaweedFilerClient) error {
+		resp, err := filerClient.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
+		if err != nil {
+			return err
+		}
+		remoteSyncOptions.bucketsDir = resp.DirBuckets
+		return nil
+	})
+
+	if dir != "" && dir != remoteSyncOptions.bucketsDir {
+		fmt.Printf("synchronize %s to remote storage...\n", dir)
+		util.RetryForever("filer.remote.sync "+dir, func() error {
+			return followUpdatesAndUploadToRemote(&remoteSyncOptions, filerSource, dir)
+		}, func(err error) bool {
+			if err != nil {
+				glog.Errorf("synchronize %s: %v", dir, err)
+			}
+			return true
+		})
+		return true
+	}
+
+	// read filer remote storage mount mappings
+	if detectErr := remoteSyncOptions.collectRemoteStorageConf(); detectErr != nil {
+		fmt.Fprintf(os.Stderr, "read mount info: %v\n", detectErr)
+		return true
+	}
+
+	// synchronize /buckets folder
+	fmt.Printf("synchronize buckets in %s ...\n", remoteSyncOptions.bucketsDir)
+	util.RetryForever("filer.remote.sync buckets", func() error {
+		return remoteSyncOptions.followBucketUpdatesAndUploadToRemote(filerSource)
+	}, func(err error) bool {
+		if err != nil {
+			glog.Errorf("synchronize %s: %v", remoteSyncOptions.bucketsDir, err)
+		}
+		return true
+	})
+	return true
+
+}
@@ -0,0 +1,387 @@
+package command
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
+	"github.com/chrislusf/seaweedfs/weed/remote_storage"
+	"github.com/chrislusf/seaweedfs/weed/replication/source"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/golang/protobuf/proto"
+	"math"
+	"math/rand"
+	"strings"
+	"time"
+)
+
+func (option *RemoteSyncOptions) followBucketUpdatesAndUploadToRemote(filerSource *source.FilerSource) error {
+
+	// read filer remote storage mount mappings
+	if detectErr := option.collectRemoteStorageConf(); detectErr != nil {
+		return fmt.Errorf("read mount info: %v", detectErr)
+	}
+
+	eachEntryFunc, err := option.makeBucketedEventProcessor(filerSource)
+	if err != nil {
+		return err
+	}
+
+	processEventFnWithOffset := pb.AddOffsetFunc(eachEntryFunc, 3*time.Second, func(counter int64, lastTsNs int64) error {
+		lastTime := time.Unix(0, lastTsNs)
+		glog.V(0).Infof("remote sync %s progressed to %v %0.2f/sec", *option.filerAddress, lastTime, float64(counter)/float64(3))
+		return remote_storage.SetSyncOffset(option.grpcDialOption, *option.filerAddress, option.bucketsDir, lastTsNs)
+	})
+
+	lastOffsetTs := collectLastSyncOffset(option, option.bucketsDir)
+
+	return pb.FollowMetadata(*option.filerAddress, option.grpcDialOption, "filer.remote.sync",
+		option.bucketsDir, []string{filer.DirectoryEtcRemote}, lastOffsetTs.UnixNano(), 0, processEventFnWithOffset, false)
+}
+
+func (option *RemoteSyncOptions) makeBucketedEventProcessor(filerSource *source.FilerSource) (pb.ProcessMetadataFunc, error) {
+
+	handleCreateBucket := func(entry *filer_pb.Entry) error {
+		if !entry.IsDirectory {
+			return nil
+		}
+		if entry.RemoteEntry != nil {
+			// this directory is imported from "remote.mount.buckets" or "remote.mount"
+			return nil
+		}
+		if option.mappings.PrimaryBucketStorageName != "" && *option.createBucketAt == "" {
+			*option.createBucketAt = option.mappings.PrimaryBucketStorageName
+			glog.V(0).Infof("%s is set as the primary remote storage", *option.createBucketAt)
+		}
+		if len(option.mappings.Mappings) == 1 && *option.createBucketAt == "" {
+			for k := range option.mappings.Mappings {
+				*option.createBucketAt = k
+				glog.V(0).Infof("%s is set as the only remote storage", *option.createBucketAt)
+			}
+		}
+		if *option.createBucketAt == "" {
+			return nil
+		}
+		remoteConf, found := option.remoteConfs[*option.createBucketAt]
+		if !found {
+			return fmt.Errorf("un-configured remote storage %s", *option.createBucketAt)
+		}
+
+		client, err := remote_storage.GetRemoteStorage(remoteConf)
+		if err != nil {
+			return err
+		}
+
+		bucketName := strings.ToLower(entry.Name)
+		if *option.createBucketRandomSuffix {
+			// https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html
+			if len(bucketName)+5 > 63 {
+				bucketName = bucketName[:58]
+			}
+			bucketName = fmt.Sprintf("%s-%4d", bucketName, rand.Uint32()%10000)
+		}
+
+		glog.V(0).Infof("create bucket %s", bucketName)
+		if err := client.CreateBucket(bucketName); err != nil {
+			return fmt.Errorf("create bucket %s in %s: %v", bucketName, remoteConf.Name, err)
+		}
+
+		bucketPath := util.FullPath(option.bucketsDir).Child(entry.Name)
+		remoteLocation := &remote_pb.RemoteStorageLocation{
+			Name:   *option.createBucketAt,
+			Bucket: bucketName,
+			Path:   "/",
+		}
+
+		// need to add new mapping here before getting upates from metadata tailing
+		option.mappings.Mappings[string(bucketPath)] = remoteLocation
+
+		return filer.InsertMountMapping(option, string(bucketPath), remoteLocation)
+
+	}
+	handleDeleteBucket := func(entry *filer_pb.Entry) error {
+		if !entry.IsDirectory {
+			return nil
+		}
+
+		client, remoteStorageMountLocation, err := option.findRemoteStorageClient(entry.Name)
+		if err != nil {
+			return fmt.Errorf("findRemoteStorageClient %s: %v", entry.Name, err)
+		}
+
+		glog.V(0).Infof("delete remote bucket %s", remoteStorageMountLocation.Bucket)
+		if err := client.DeleteBucket(remoteStorageMountLocation.Bucket); err != nil {
+			return fmt.Errorf("delete remote bucket %s: %v", remoteStorageMountLocation.Bucket, err)
+		}
+
+		bucketPath := util.FullPath(option.bucketsDir).Child(entry.Name)
+
+		return filer.DeleteMountMapping(option, string(bucketPath))
+	}
+
+	handleEtcRemoteChanges := func(resp *filer_pb.SubscribeMetadataResponse) error {
+		message := resp.EventNotification
+		if message.NewEntry != nil {
+			// update
+			if message.NewEntry.Name == filer.REMOTE_STORAGE_MOUNT_FILE {
+				newMappings, readErr := filer.UnmarshalRemoteStorageMappings(message.NewEntry.Content)
+				if readErr != nil {
+					return fmt.Errorf("unmarshal mappings: %v", readErr)
+				}
+				option.mappings = newMappings
+			}
+			if strings.HasSuffix(message.NewEntry.Name, filer.REMOTE_STORAGE_CONF_SUFFIX) {
+				conf := &remote_pb.RemoteConf{}
+				if err := proto.Unmarshal(message.NewEntry.Content, conf); err != nil {
+					return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, message.NewEntry.Name, err)
+				}
+				option.remoteConfs[conf.Name] = conf
+			}
+		} else if message.OldEntry != nil {
+			// deletion
+			if strings.HasSuffix(message.OldEntry.Name, filer.REMOTE_STORAGE_CONF_SUFFIX) {
+				conf := &remote_pb.RemoteConf{}
+				if err := proto.Unmarshal(message.OldEntry.Content, conf); err != nil {
+					return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, message.OldEntry.Name, err)
+				}
+				delete(option.remoteConfs, conf.Name)
+			}
+		}
+
+		return nil
+	}
+
+	eachEntryFunc := func(resp *filer_pb.SubscribeMetadataResponse) error {
+		message := resp.EventNotification
+		if strings.HasPrefix(resp.Directory, filer.DirectoryEtcRemote) {
+			return handleEtcRemoteChanges(resp)
+		}
+
+		if message.OldEntry == nil && message.NewEntry == nil {
+			return nil
+		}
+		if message.OldEntry == nil && message.NewEntry != nil {
+			if message.NewParentPath == option.bucketsDir {
+				return handleCreateBucket(message.NewEntry)
+			}
+			if !filer.HasData(message.NewEntry) {
+				return nil
+			}
+			bucket, remoteStorageMountLocation, remoteStorage, ok := option.detectBucketInfo(message.NewParentPath)
+			if !ok {
+				return nil
+			}
+			client, err := remote_storage.GetRemoteStorage(remoteStorage)
+			if err != nil {
+				return err
+			}
+			glog.V(2).Infof("create: %+v", resp)
+			if !shouldSendToRemote(message.NewEntry) {
+				glog.V(2).Infof("skipping creating: %+v", resp)
+				return nil
+			}
+			dest := toRemoteStorageLocation(bucket, util.NewFullPath(message.NewParentPath, message.NewEntry.Name), remoteStorageMountLocation)
+			if message.NewEntry.IsDirectory {
+				glog.V(0).Infof("mkdir  %s", remote_storage.FormatLocation(dest))
+				return client.WriteDirectory(dest, message.NewEntry)
+			}
+			glog.V(0).Infof("create %s", remote_storage.FormatLocation(dest))
+			reader := filer.NewFileReader(filerSource, message.NewEntry)
+			remoteEntry, writeErr := client.WriteFile(dest, message.NewEntry, reader)
+			if writeErr != nil {
+				return writeErr
+			}
+			return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
+		}
+		if message.OldEntry != nil && message.NewEntry == nil {
+			if resp.Directory == option.bucketsDir {
+				return handleDeleteBucket(message.OldEntry)
+			}
+			bucket, remoteStorageMountLocation, remoteStorage, ok := option.detectBucketInfo(resp.Directory)
+			if !ok {
+				return nil
+			}
+			client, err := remote_storage.GetRemoteStorage(remoteStorage)
+			if err != nil {
+				return err
+			}
+			glog.V(2).Infof("delete: %+v", resp)
+			dest := toRemoteStorageLocation(bucket, util.NewFullPath(resp.Directory, message.OldEntry.Name), remoteStorageMountLocation)
+			if message.OldEntry.IsDirectory {
+				glog.V(0).Infof("rmdir  %s", remote_storage.FormatLocation(dest))
+				return client.RemoveDirectory(dest)
+			}
+			glog.V(0).Infof("delete %s", remote_storage.FormatLocation(dest))
+			return client.DeleteFile(dest)
+		}
+		if message.OldEntry != nil && message.NewEntry != nil {
+			if resp.Directory == option.bucketsDir {
+				if message.NewParentPath == option.bucketsDir {
+					if message.OldEntry.Name == message.NewEntry.Name {
+						return nil
+					}
+					if err := handleCreateBucket(message.NewEntry); err != nil {
+						return err
+					}
+					if err := handleDeleteBucket(message.OldEntry); err != nil {
+						return err
+					}
+				}
+			}
+			oldBucket, oldRemoteStorageMountLocation, oldRemoteStorage, oldOk := option.detectBucketInfo(resp.Directory)
+			newBucket, newRemoteStorageMountLocation, newRemoteStorage, newOk := option.detectBucketInfo(message.NewParentPath)
+			if oldOk && newOk {
+				if !shouldSendToRemote(message.NewEntry) {
+					glog.V(2).Infof("skipping updating: %+v", resp)
+					return nil
+				}
+				client, err := remote_storage.GetRemoteStorage(oldRemoteStorage)
+				if err != nil {
+					return err
+				}
+				if resp.Directory == message.NewParentPath && message.OldEntry.Name == message.NewEntry.Name {
+					// update the same entry
+					if message.NewEntry.IsDirectory {
+						// update directory property
+						return nil
+					}
+					if filer.IsSameData(message.OldEntry, message.NewEntry) {
+						glog.V(2).Infof("update meta: %+v", resp)
+						oldDest := toRemoteStorageLocation(oldBucket, util.NewFullPath(resp.Directory, message.OldEntry.Name), oldRemoteStorageMountLocation)
+						return client.UpdateFileMetadata(oldDest, message.OldEntry, message.NewEntry)
+					} else {
+						newDest := toRemoteStorageLocation(newBucket, util.NewFullPath(message.NewParentPath, message.NewEntry.Name), newRemoteStorageMountLocation)
+						reader := filer.NewFileReader(filerSource, message.NewEntry)
+						glog.V(0).Infof("create %s", remote_storage.FormatLocation(newDest))
+						remoteEntry, writeErr := client.WriteFile(newDest, message.NewEntry, reader)
+						if writeErr != nil {
+							return writeErr
+						}
+						return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
+					}
+				}
+			}
+
+			// the following is entry rename
+			if oldOk {
+				client, err := remote_storage.GetRemoteStorage(oldRemoteStorage)
+				if err != nil {
+					return err
+				}
+				oldDest := toRemoteStorageLocation(oldBucket, util.NewFullPath(resp.Directory, message.OldEntry.Name), oldRemoteStorageMountLocation)
+				if message.OldEntry.IsDirectory {
+					return client.RemoveDirectory(oldDest)
+				}
+				glog.V(0).Infof("delete %s", remote_storage.FormatLocation(oldDest))
+				if err := client.DeleteFile(oldDest); err != nil {
+					return err
+				}
+			}
+			if newOk {
+				if !shouldSendToRemote(message.NewEntry) {
+					glog.V(2).Infof("skipping updating: %+v", resp)
+					return nil
+				}
+				client, err := remote_storage.GetRemoteStorage(newRemoteStorage)
+				if err != nil {
+					return err
+				}
+				newDest := toRemoteStorageLocation(newBucket, util.NewFullPath(message.NewParentPath, message.NewEntry.Name), newRemoteStorageMountLocation)
+				if message.NewEntry.IsDirectory {
+					return client.WriteDirectory(newDest, message.NewEntry)
+				}
+				reader := filer.NewFileReader(filerSource, message.NewEntry)
+				glog.V(0).Infof("create %s", remote_storage.FormatLocation(newDest))
+				remoteEntry, writeErr := client.WriteFile(newDest, message.NewEntry, reader)
+				if writeErr != nil {
+					return writeErr
+				}
+				return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
+			}
+		}
+
+		return nil
+	}
+	return eachEntryFunc, nil
+}
+
+func (option *RemoteSyncOptions) findRemoteStorageClient(bucketName string) (client remote_storage.RemoteStorageClient, remoteStorageMountLocation *remote_pb.RemoteStorageLocation, err error) {
+	bucket := util.FullPath(option.bucketsDir).Child(bucketName)
+
+	var isMounted bool
+	remoteStorageMountLocation, isMounted = option.mappings.Mappings[string(bucket)]
+	if !isMounted {
+		return nil, remoteStorageMountLocation, fmt.Errorf("%s is not mounted", bucket)
+	}
+	remoteConf, hasClient := option.remoteConfs[remoteStorageMountLocation.Name]
+	if !hasClient {
+		return nil, remoteStorageMountLocation, fmt.Errorf("%s mounted to un-configured %+v", bucket, remoteStorageMountLocation)
+	}
+
+	client, err = remote_storage.GetRemoteStorage(remoteConf)
+	if err != nil {
+		return nil, remoteStorageMountLocation, err
+	}
+	return client, remoteStorageMountLocation, nil
+}
+
+func (option *RemoteSyncOptions) detectBucketInfo(actualDir string) (bucket util.FullPath, remoteStorageMountLocation *remote_pb.RemoteStorageLocation, remoteConf *remote_pb.RemoteConf, ok bool) {
+	bucket, ok = extractBucketPath(option.bucketsDir, actualDir)
+	if !ok {
+		return "", nil, nil, false
+	}
+	var isMounted bool
+	remoteStorageMountLocation, isMounted = option.mappings.Mappings[string(bucket)]
+	if !isMounted {
+		glog.Warningf("%s is not mounted", bucket)
+		return "", nil, nil, false
+	}
+	var hasClient bool
+	remoteConf, hasClient = option.remoteConfs[remoteStorageMountLocation.Name]
+	if !hasClient {
+		glog.Warningf("%s mounted to un-configured %+v", bucket, remoteStorageMountLocation)
+		return "", nil, nil, false
+	}
+	return bucket, remoteStorageMountLocation, remoteConf, true
+}
+
+func extractBucketPath(bucketsDir, dir string) (util.FullPath, bool) {
+	if !strings.HasPrefix(dir, bucketsDir+"/") {
+		return "", false
+	}
+	parts := strings.SplitN(dir[len(bucketsDir)+1:], "/", 2)
+	return util.FullPath(bucketsDir).Child(parts[0]), true
+}
+
+func (option *RemoteSyncOptions) collectRemoteStorageConf() (err error) {
+
+	if mappings, err := filer.ReadMountMappings(option.grpcDialOption, *option.filerAddress); err != nil {
+		return err
+	} else {
+		option.mappings = mappings
+	}
+
+	option.remoteConfs = make(map[string]*remote_pb.RemoteConf)
+	var lastConfName string
+	err = filer_pb.List(option, filer.DirectoryEtcRemote, "", func(entry *filer_pb.Entry, isLast bool) error {
+		if !strings.HasSuffix(entry.Name, filer.REMOTE_STORAGE_CONF_SUFFIX) {
+			return nil
+		}
+		conf := &remote_pb.RemoteConf{}
+		if err := proto.Unmarshal(entry.Content, conf); err != nil {
+			return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, entry.Name, err)
+		}
+		option.remoteConfs[conf.Name] = conf
+		lastConfName = conf.Name
+		return nil
+	}, "", false, math.MaxUint32)
+
+	if option.mappings.PrimaryBucketStorageName == "" && len(option.remoteConfs) == 1 {
+		glog.V(0).Infof("%s is set to the default remote storage", lastConfName)
+		option.mappings.PrimaryBucketStorageName = lastConfName
+	}
+
+	return
+}
@@ -0,0 +1,221 @@
+package command
+
+import (
+	"context"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
+	"github.com/chrislusf/seaweedfs/weed/remote_storage"
+	"github.com/chrislusf/seaweedfs/weed/replication/source"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/golang/protobuf/proto"
+	"os"
+	"strings"
+	"time"
+)
+
+func followUpdatesAndUploadToRemote(option *RemoteSyncOptions, filerSource *source.FilerSource, mountedDir string) error {
+
+	// read filer remote storage mount mappings
+	_, _, remoteStorageMountLocation, remoteStorage, detectErr := filer.DetectMountInfo(option.grpcDialOption, *option.filerAddress, mountedDir)
+	if detectErr != nil {
+		return fmt.Errorf("read mount info: %v", detectErr)
+	}
+
+	eachEntryFunc, err := makeEventProcessor(remoteStorage, mountedDir, remoteStorageMountLocation, filerSource)
+	if err != nil {
+		return err
+	}
+
+	processEventFnWithOffset := pb.AddOffsetFunc(eachEntryFunc, 3*time.Second, func(counter int64, lastTsNs int64) error {
+		lastTime := time.Unix(0, lastTsNs)
+		glog.V(0).Infof("remote sync %s progressed to %v %0.2f/sec", *option.filerAddress, lastTime, float64(counter)/float64(3))
+		return remote_storage.SetSyncOffset(option.grpcDialOption, *option.filerAddress, mountedDir, lastTsNs)
+	})
+
+	lastOffsetTs := collectLastSyncOffset(option, mountedDir)
+
+	return pb.FollowMetadata(*option.filerAddress, option.grpcDialOption, "filer.remote.sync",
+		mountedDir, []string{filer.DirectoryEtcRemote}, lastOffsetTs.UnixNano(), 0, processEventFnWithOffset, false)
+}
+
+func makeEventProcessor(remoteStorage *remote_pb.RemoteConf, mountedDir string, remoteStorageMountLocation *remote_pb.RemoteStorageLocation, filerSource *source.FilerSource) (pb.ProcessMetadataFunc, error) {
+	client, err := remote_storage.GetRemoteStorage(remoteStorage)
+	if err != nil {
+		return nil, err
+	}
+
+	handleEtcRemoteChanges := func(resp *filer_pb.SubscribeMetadataResponse) error {
+		message := resp.EventNotification
+		if message.NewEntry == nil {
+			return nil
+		}
+		if message.NewEntry.Name == filer.REMOTE_STORAGE_MOUNT_FILE {
+			mappings, readErr := filer.UnmarshalRemoteStorageMappings(message.NewEntry.Content)
+			if readErr != nil {
+				return fmt.Errorf("unmarshal mappings: %v", readErr)
+			}
+			if remoteLoc, found := mappings.Mappings[mountedDir]; found {
+				if remoteStorageMountLocation.Bucket != remoteLoc.Bucket || remoteStorageMountLocation.Path != remoteLoc.Path {
+					glog.Fatalf("Unexpected mount changes %+v => %+v", remoteStorageMountLocation, remoteLoc)
+				}
+			} else {
+				glog.V(0).Infof("unmounted %s exiting ...", mountedDir)
+				os.Exit(0)
+			}
+		}
+		if message.NewEntry.Name == remoteStorage.Name+filer.REMOTE_STORAGE_CONF_SUFFIX {
+			conf := &remote_pb.RemoteConf{}
+			if err := proto.Unmarshal(message.NewEntry.Content, conf); err != nil {
+				return fmt.Errorf("unmarshal %s/%s: %v", filer.DirectoryEtcRemote, message.NewEntry.Name, err)
+			}
+			remoteStorage = conf
+			if newClient, err := remote_storage.GetRemoteStorage(remoteStorage); err == nil {
+				client = newClient
+			} else {
+				return err
+			}
+		}
+
+		return nil
+	}
+
+	eachEntryFunc := func(resp *filer_pb.SubscribeMetadataResponse) error {
+		message := resp.EventNotification
+		if strings.HasPrefix(resp.Directory, filer.DirectoryEtcRemote) {
+			return handleEtcRemoteChanges(resp)
+		}
+
+		if message.OldEntry == nil && message.NewEntry == nil {
+			return nil
+		}
+		if message.OldEntry == nil && message.NewEntry != nil {
+			if !filer.HasData(message.NewEntry) {
+				return nil
+			}
+			glog.V(2).Infof("create: %+v", resp)
+			if !shouldSendToRemote(message.NewEntry) {
+				glog.V(2).Infof("skipping creating: %+v", resp)
+				return nil
+			}
+			dest := toRemoteStorageLocation(util.FullPath(mountedDir), util.NewFullPath(message.NewParentPath, message.NewEntry.Name), remoteStorageMountLocation)
+			if message.NewEntry.IsDirectory {
+				glog.V(0).Infof("mkdir  %s", remote_storage.FormatLocation(dest))
+				return client.WriteDirectory(dest, message.NewEntry)
+			}
+			glog.V(0).Infof("create %s", remote_storage.FormatLocation(dest))
+			reader := filer.NewFileReader(filerSource, message.NewEntry)
+			remoteEntry, writeErr := client.WriteFile(dest, message.NewEntry, reader)
+			if writeErr != nil {
+				return writeErr
+			}
+			return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
+		}
+		if message.OldEntry != nil && message.NewEntry == nil {
+			glog.V(2).Infof("delete: %+v", resp)
+			dest := toRemoteStorageLocation(util.FullPath(mountedDir), util.NewFullPath(resp.Directory, message.OldEntry.Name), remoteStorageMountLocation)
+			if message.OldEntry.IsDirectory {
+				glog.V(0).Infof("rmdir  %s", remote_storage.FormatLocation(dest))
+				return client.RemoveDirectory(dest)
+			}
+			glog.V(0).Infof("delete %s", remote_storage.FormatLocation(dest))
+			return client.DeleteFile(dest)
+		}
+		if message.OldEntry != nil && message.NewEntry != nil {
+			oldDest := toRemoteStorageLocation(util.FullPath(mountedDir), util.NewFullPath(resp.Directory, message.OldEntry.Name), remoteStorageMountLocation)
+			dest := toRemoteStorageLocation(util.FullPath(mountedDir), util.NewFullPath(message.NewParentPath, message.NewEntry.Name), remoteStorageMountLocation)
+			if !shouldSendToRemote(message.NewEntry) {
+				glog.V(2).Infof("skipping updating: %+v", resp)
+				return nil
+			}
+			if message.NewEntry.IsDirectory {
+				return client.WriteDirectory(dest, message.NewEntry)
+			}
+			if resp.Directory == message.NewParentPath && message.OldEntry.Name == message.NewEntry.Name {
+				if filer.IsSameData(message.OldEntry, message.NewEntry) {
+					glog.V(2).Infof("update meta: %+v", resp)
+					return client.UpdateFileMetadata(dest, message.OldEntry, message.NewEntry)
+				}
+			}
+			glog.V(2).Infof("update: %+v", resp)
+			glog.V(0).Infof("delete %s", remote_storage.FormatLocation(oldDest))
+			if err := client.DeleteFile(oldDest); err != nil {
+				return err
+			}
+			reader := filer.NewFileReader(filerSource, message.NewEntry)
+			glog.V(0).Infof("create %s", remote_storage.FormatLocation(dest))
+			remoteEntry, writeErr := client.WriteFile(dest, message.NewEntry, reader)
+			if writeErr != nil {
+				return writeErr
+			}
+			return updateLocalEntry(&remoteSyncOptions, message.NewParentPath, message.NewEntry, remoteEntry)
+		}
+
+		return nil
+	}
+	return eachEntryFunc, nil
+}
+
+func collectLastSyncOffset(option *RemoteSyncOptions, mountedDir string) time.Time {
+	// 1. specified by timeAgo
+	// 2. last offset timestamp for this directory
+	// 3. directory creation time
+	var lastOffsetTs time.Time
+	if *option.timeAgo == 0 {
+		mountedDirEntry, err := filer_pb.GetEntry(option, util.FullPath(mountedDir))
+		if err != nil {
+			glog.V(0).Infof("get mounted directory %s: %v", mountedDir, err)
+			return time.Now()
+		}
+
+		lastOffsetTsNs, err := remote_storage.GetSyncOffset(option.grpcDialOption, *option.filerAddress, mountedDir)
+		if mountedDirEntry != nil {
+			if err == nil && mountedDirEntry.Attributes.Crtime < lastOffsetTsNs/1000000 {
+				lastOffsetTs = time.Unix(0, lastOffsetTsNs)
+				glog.V(0).Infof("resume from %v", lastOffsetTs)
+			} else {
+				lastOffsetTs = time.Unix(mountedDirEntry.Attributes.Crtime, 0)
+			}
+		} else {
+			lastOffsetTs = time.Now()
+		}
+	} else {
+		lastOffsetTs = time.Now().Add(-*option.timeAgo)
+	}
+	return lastOffsetTs
+}
+
+func toRemoteStorageLocation(mountDir, sourcePath util.FullPath, remoteMountLocation *remote_pb.RemoteStorageLocation) *remote_pb.RemoteStorageLocation {
+	source := string(sourcePath[len(mountDir):])
+	dest := util.FullPath(remoteMountLocation.Path).Child(source)
+	return &remote_pb.RemoteStorageLocation{
+		Name:   remoteMountLocation.Name,
+		Bucket: remoteMountLocation.Bucket,
+		Path:   string(dest),
+	}
+}
+
+func shouldSendToRemote(entry *filer_pb.Entry) bool {
+	if entry.RemoteEntry == nil {
+		return true
+	}
+	if entry.RemoteEntry.RemoteMtime < entry.Attributes.Mtime {
+		return true
+	}
+	return false
+}
+
+func updateLocalEntry(filerClient filer_pb.FilerClient, dir string, entry *filer_pb.Entry, remoteEntry *filer_pb.RemoteEntry) error {
+	remoteEntry.LastLocalSyncTsNs = time.Now().UnixNano()
+	entry.RemoteEntry = remoteEntry
+	return filerClient.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+		_, err := client.UpdateEntry(context.Background(), &filer_pb.UpdateEntryRequest{
+			Directory: dir,
+			Entry:     entry,
+		})
+		return err
+	})
+}
@@ -7,12 +7,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/replication"
 	"github.com/chrislusf/seaweedfs/weed/replication/sink"
-	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/azuresink"
-	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/b2sink"
-	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/filersink"
-	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/gcssink"
-	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/localsink"
-	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/s3sink"
 	"github.com/chrislusf/seaweedfs/weed/replication/sub"
 	"github.com/chrislusf/seaweedfs/weed/util"
 )
@@ -15,7 +15,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/chrislusf/seaweedfs/weed/util/grace"
 	"google.golang.org/grpc"
-	"io"
 	"strings"
 	"time"
 )
@@ -71,8 +70,8 @@ func init() {

 var cmdFilerSynchronize = &Command{
 	UsageLine: "filer.sync -a=<oneFilerHost>:<oneFilerPort> -b=<otherFilerHost>:<otherFilerPort>",
-	Short:     "resumeable continuous synchronization between two active-active or active-passive SeaweedFS clusters",
-	Long: `resumeable continuous synchronization for file changes between two active-active or active-passive filers
+	Short:     "resumable continuous synchronization between two active-active or active-passive SeaweedFS clusters",
+	Long: `resumable continuous synchronization for file changes between two active-active or active-passive filers

 	filer.sync listens on filer notifications. If any file is updated, it will fetch the updated content,
 	and write to the other destination. Different from filer.replicate:
@@ -89,6 +88,7 @@ var cmdFilerSynchronize = &Command{

 func runFilerSynchronize(cmd *Command, args []string) bool {

+	util.LoadConfiguration("security", false)
 	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")

 	grace.SetupProfiling(*syncCpuProfile, *syncMemProfile)
@@ -165,50 +165,14 @@ func doSubscribeFilerMetaChanges(grpcDialOption grpc.DialOption, sourceFiler, so
 		return persistEventFn(resp)
 	}

-	return pb.WithFilerClient(sourceFiler, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-
-		ctx, cancel := context.WithCancel(context.Background())
-		defer cancel()
-
-		stream, err := client.SubscribeMetadata(ctx, &filer_pb.SubscribeMetadataRequest{
-			ClientName: "syncTo_" + targetFiler,
-			PathPrefix: sourcePath,
-			SinceNs:    sourceFilerOffsetTsNs,
-			Signature:  targetFilerSignature,
-		})
-		if err != nil {
-			return fmt.Errorf("listen: %v", err)
-		}
-
-		var counter int64
-		var lastWriteTime time.Time
-		for {
-			resp, listenErr := stream.Recv()
-			if listenErr == io.EOF {
-				return nil
-			}
-			if listenErr != nil {
-				return listenErr
-			}
-
-			if err := processEventFn(resp); err != nil {
-				return err
-			}
-
-			counter++
-			if lastWriteTime.Add(3 * time.Second).Before(time.Now()) {
-				glog.V(0).Infof("sync %s => %s progressed to %v %0.2f/sec", sourceFiler, targetFiler, time.Unix(0, resp.TsNs), float64(counter)/float64(3))
-				counter = 0
-				lastWriteTime = time.Now()
-				if err := setOffset(grpcDialOption, targetFiler, SyncKeyPrefix, sourceFilerSignature, resp.TsNs); err != nil {
-					return err
-				}
-			}
-
-		}
-
+	processEventFnWithOffset := pb.AddOffsetFunc(processEventFn, 3*time.Second, func(counter int64, lastTsNs int64) error {
+		glog.V(0).Infof("sync %s to %s progressed to %v %0.2f/sec", sourceFiler, targetFiler, time.Unix(0, lastTsNs), float64(counter)/float64(3))
+		return setOffset(grpcDialOption, targetFiler, SyncKeyPrefix, sourceFilerSignature, lastTsNs)
 	})

+	return pb.FollowMetadata(sourceFiler, grpcDialOption, "syncTo_"+targetFiler,
+		sourcePath, nil, sourceFilerOffsetTsNs, targetFilerSignature, processEventFnWithOffset, false)
+
 }

 const (
@@ -359,16 +323,19 @@ func genProcessFunction(sourcePath string, targetPath string, dataSink sink.Repl
 	return processEventFn
 }

-func buildKey(dataSink sink.ReplicationSink, message *filer_pb.EventNotification, targetPath string, sourceKey util.FullPath, sourcePath string) string {
+func buildKey(dataSink sink.ReplicationSink, message *filer_pb.EventNotification, targetPath string, sourceKey util.FullPath, sourcePath string) (key string) {
 	if !dataSink.IsIncremental() {
-		return util.Join(targetPath, string(sourceKey)[len(sourcePath):])
+		key = util.Join(targetPath, string(sourceKey)[len(sourcePath):])
+	} else {
+		var mTime int64
+		if message.NewEntry != nil {
+			mTime = message.NewEntry.Attributes.Mtime
+		} else if message.OldEntry != nil {
+			mTime = message.OldEntry.Attributes.Mtime
+		}
+		dateKey := time.Unix(mTime, 0).Format("2006-01-02")
+		key = util.Join(targetPath, dateKey, string(sourceKey)[len(sourcePath):])
 	}
-	var mTime int64
-	if message.NewEntry != nil {
-		mTime = message.NewEntry.Attributes.Mtime
-	} else if message.OldEntry != nil {
-		mTime = message.OldEntry.Attributes.Mtime
-	}
-	dateKey := time.Unix(mTime, 0).Format("2006-01-02")
-	return util.Join(targetPath, dateKey, string(sourceKey)[len(sourcePath):])
+
+	return escapeKey(key)
 }
@@ -0,0 +1,8 @@
+//go:build !windows
+// +build !windows
+
+package command
+
+func escapeKey(key string) string {
+	return key
+}
@@ -0,0 +1,12 @@
+package command
+
+import (
+	"strings"
+)
+
+func escapeKey(key string) string {
+	if strings.Contains(key, ":") {
+		return strings.ReplaceAll(key, ":", "")
+	}
+	return key
+}
@@ -0,0 +1,260 @@
+package command
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func init() {
+	cmdFuse.Run = runFuse // break init cycle
+}
+
+type parameter struct {
+	name  string
+	value string
+}
+
+func runFuse(cmd *Command, args []string) bool {
+	rawArgs := strings.Join(args, " ")
+	rawArgsLen := len(rawArgs)
+	option := strings.Builder{}
+	options := []parameter{}
+	masterProcess := true
+	fusermountPath := ""
+
+	// first parameter
+	i := 0
+	for i = 0; i < rawArgsLen && rawArgs[i] != ' '; i++ {
+		option.WriteByte(rawArgs[i])
+	}
+	options = append(options, parameter{"arg0", option.String()})
+	option.Reset()
+
+	for i++; i < rawArgsLen; i++ {
+
+		// space separator check for filled option
+		if rawArgs[i] == ' ' {
+			if option.Len() > 0 {
+				options = append(options, parameter{option.String(), "true"})
+				option.Reset()
+			}
+
+			// dash separator read option until next space
+		} else if rawArgs[i] == '-' {
+			for i++; i < rawArgsLen && rawArgs[i] != ' '; i++ {
+				option.WriteByte(rawArgs[i])
+			}
+			options = append(options, parameter{option.String(), "true"})
+			option.Reset()
+
+			// equal separator start option with pending value
+		} else if rawArgs[i] == '=' {
+			name := option.String()
+			option.Reset()
+
+			for i++; i < rawArgsLen && rawArgs[i] != ',' && rawArgs[i] != ' '; i++ {
+				// double quote separator read option until next double quote
+				if rawArgs[i] == '"' {
+					for i++; i < rawArgsLen && rawArgs[i] != '"'; i++ {
+						option.WriteByte(rawArgs[i])
+					}
+
+					// single quote separator read option until next single quote
+				} else if rawArgs[i] == '\'' {
+					for i++; i < rawArgsLen && rawArgs[i] != '\''; i++ {
+						option.WriteByte(rawArgs[i])
+					}
+
+					// add chars before comma
+				} else if rawArgs[i] != ' ' {
+					option.WriteByte(rawArgs[i])
+				}
+			}
+
+			options = append(options, parameter{name, option.String()})
+			option.Reset()
+
+			// comma separator just read current option
+		} else if rawArgs[i] == ',' {
+			options = append(options, parameter{option.String(), "true"})
+			option.Reset()
+
+			// what is not a separator fill option buffer
+		} else {
+			option.WriteByte(rawArgs[i])
+		}
+	}
+
+	// get residual option data
+	if option.Len() > 0 {
+		// add value to pending option
+		options = append(options, parameter{option.String(), "true"})
+		option.Reset()
+	}
+
+	// scan each parameter
+	for i := 0; i < len(options); i++ {
+		parameter := options[i]
+
+		switch parameter.name {
+		case "child":
+			masterProcess = false
+		case "arg0":
+			mountOptions.dir = &parameter.value
+		case "filer":
+			mountOptions.filer = &parameter.value
+		case "filer.path":
+			mountOptions.filerMountRootPath = &parameter.value
+		case "dirAutoCreate":
+			if parsed, err := strconv.ParseBool(parameter.value); err == nil {
+				mountOptions.dirAutoCreate = &parsed
+			} else {
+				panic(fmt.Errorf("dirAutoCreate: %s", err))
+			}
+		case "collection":
+			mountOptions.collection = &parameter.value
+		case "replication":
+			mountOptions.replication = &parameter.value
+		case "disk":
+			mountOptions.diskType = &parameter.value
+		case "ttl":
+			if parsed, err := strconv.ParseInt(parameter.value, 0, 32); err == nil {
+				intValue := int(parsed)
+				mountOptions.ttlSec = &intValue
+			} else {
+				panic(fmt.Errorf("ttl: %s", err))
+			}
+		case "chunkSizeLimitMB":
+			if parsed, err := strconv.ParseInt(parameter.value, 0, 32); err == nil {
+				intValue := int(parsed)
+				mountOptions.chunkSizeLimitMB = &intValue
+			} else {
+				panic(fmt.Errorf("chunkSizeLimitMB: %s", err))
+			}
+		case "concurrentWriters":
+			i++
+			if parsed, err := strconv.ParseInt(parameter.value, 0, 32); err == nil {
+				intValue := int(parsed)
+				mountOptions.concurrentWriters = &intValue
+			} else {
+				panic(fmt.Errorf("concurrentWriters: %s", err))
+			}
+		case "cacheDir":
+			mountOptions.cacheDir = &parameter.value
+		case "cacheCapacityMB":
+			if parsed, err := strconv.ParseInt(parameter.value, 0, 64); err == nil {
+				mountOptions.cacheSizeMB = &parsed
+			} else {
+				panic(fmt.Errorf("cacheCapacityMB: %s", err))
+			}
+		case "dataCenter":
+			mountOptions.dataCenter = &parameter.value
+		case "allowOthers":
+			if parsed, err := strconv.ParseBool(parameter.value); err == nil {
+				mountOptions.allowOthers = &parsed
+			} else {
+				panic(fmt.Errorf("allowOthers: %s", err))
+			}
+		case "umask":
+			mountOptions.umaskString = &parameter.value
+		case "nonempty":
+			if parsed, err := strconv.ParseBool(parameter.value); err == nil {
+				mountOptions.nonempty = &parsed
+			} else {
+				panic(fmt.Errorf("nonempty: %s", err))
+			}
+		case "volumeServerAccess":
+			mountOptions.volumeServerAccess = &parameter.value
+		case "map.uid":
+			mountOptions.uidMap = &parameter.value
+		case "map.gid":
+			mountOptions.gidMap = &parameter.value
+		case "readOnly":
+			if parsed, err := strconv.ParseBool(parameter.value); err == nil {
+				mountOptions.readOnly = &parsed
+			} else {
+				panic(fmt.Errorf("readOnly: %s", err))
+			}
+		case "cpuprofile":
+			mountCpuProfile = &parameter.value
+		case "memprofile":
+			mountMemProfile = &parameter.value
+		case "readRetryTime":
+			if parsed, err := time.ParseDuration(parameter.value); err == nil {
+				mountReadRetryTime = &parsed
+			} else {
+				panic(fmt.Errorf("readRetryTime: %s", err))
+			}
+		case "fusermount.path":
+			fusermountPath = parameter.value
+		}
+	}
+
+	// the master start the child, release it then finish himself
+	if masterProcess {
+		arg0, err := os.Executable()
+		if err != nil {
+			panic(err)
+		}
+
+		argv := append(os.Args, "-o", "child")
+
+		attr := os.ProcAttr{}
+		attr.Env = os.Environ()
+
+		child, err := os.StartProcess(arg0, argv, &attr)
+
+		if err != nil {
+			panic(fmt.Errorf("master process can not start child process: %s", err))
+		}
+
+		err = child.Release()
+
+		if err != nil {
+			panic(fmt.Errorf("master process can not release child process: %s", err))
+		}
+
+		return true
+	}
+
+	if fusermountPath != "" {
+		if err := os.Setenv("PATH", fusermountPath); err != nil {
+			panic(fmt.Errorf("setenv: %s", err))
+		}
+	} else if os.Getenv("PATH") == "" {
+		if err := os.Setenv("PATH", "/bin:/sbin:/usr/bin:/usr/sbin"); err != nil {
+			panic(fmt.Errorf("setenv: %s", err))
+		}
+	}
+
+	// just call "weed mount" command
+	return runMount(cmdMount, []string{})
+}
+
+var cmdFuse = &Command{
+	UsageLine: "fuse /mnt/mount/point -o \"filer=localhost:8888,filer.path=/\"",
+	Short:     "Allow use weed with linux's mount command",
+	Long: `Allow use weed with linux's mount command
+
+  You can use -t weed on mount command:
+  mv weed /sbin/mount.weed
+  mount -t weed fuse /mnt -o "filer=localhost:8888,filer.path=/"
+
+  Or you can use -t fuse on mount command:
+  mv weed /sbin/weed
+  mount -t fuse.weed fuse /mnt -o "filer=localhost:8888,filer.path=/"
+  mount -t fuse "weed#fuse" /mnt -o "filer=localhost:8888,filer.path=/"
+
+  To use without mess with your /sbin:
+  mount -t fuse./home/user/bin/weed fuse /mnt -o "filer=localhost:8888,filer.path=/"
+  mount -t fuse "/home/user/bin/weed#fuse" /mnt -o "filer=localhost:8888,filer.path=/"
+
+  To pass more than one parameter use quotes, example:
+  mount -t weed fuse /mnt -o "filer='192.168.0.1:8888,192.168.0.2:8888',filer.path=/"
+
+  To check valid options look "weed mount --help"
+  `,
+}
@@ -1,93 +0,0 @@
-package command
-
-import (
-	"net/http"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/chrislusf/seaweedfs/weed/server"
-	"github.com/chrislusf/seaweedfs/weed/util"
-)
-
-var (
-	gatewayOptions GatewayOptions
-)
-
-type GatewayOptions struct {
-	masters *string
-	filers  *string
-	bindIp  *string
-	port    *int
-	maxMB   *int
-}
-
-func init() {
-	cmdGateway.Run = runGateway // break init cycle
-	gatewayOptions.masters = cmdGateway.Flag.String("master", "localhost:9333", "comma-separated master servers")
-	gatewayOptions.filers = cmdGateway.Flag.String("filer", "localhost:8888", "comma-separated filer servers")
-	gatewayOptions.bindIp = cmdGateway.Flag.String("ip.bind", "localhost", "ip address to bind to")
-	gatewayOptions.port = cmdGateway.Flag.Int("port", 5647, "gateway http listen port")
-	gatewayOptions.maxMB = cmdGateway.Flag.Int("maxMB", 4, "split files larger than the limit")
-}
-
-var cmdGateway = &Command{
-	UsageLine: "gateway -port=8888 -master=<ip:port>[,<ip:port>]* -filer=<ip:port>[,<ip:port>]*",
-	Short:     "start a gateway server that points to a list of master servers or a list of filers",
-	Long: `start a gateway server which accepts REST operation to write any blobs, files, or topic messages.
-
-	POST /blobs/
-		upload the blob and return a chunk id
-	DELETE /blobs/<chunk_id>
-		delete a chunk id
-
-	/*
-	POST /files/path/to/a/file
-		save /path/to/a/file on filer 
-	DELETE /files/path/to/a/file
-		delete /path/to/a/file on filer 
-
-	POST /topics/topicName
-		save on filer to /topics/topicName/<ds>/ts.json
-	*/
-`,
-}
-
-func runGateway(cmd *Command, args []string) bool {
-
-	util.LoadConfiguration("security", false)
-
-	gatewayOptions.startGateway()
-
-	return true
-}
-
-func (gw *GatewayOptions) startGateway() {
-
-	defaultMux := http.NewServeMux()
-
-	_, gws_err := weed_server.NewGatewayServer(defaultMux, &weed_server.GatewayOption{
-		Masters: strings.Split(*gw.masters, ","),
-		Filers:  strings.Split(*gw.filers, ","),
-		MaxMB:   *gw.maxMB,
-	})
-	if gws_err != nil {
-		glog.Fatalf("Gateway startup error: %v", gws_err)
-	}
-
-	glog.V(0).Infof("Start Seaweed Gateway %s at %s:%d", util.Version(), *gw.bindIp, *gw.port)
-	gatewayListener, e := util.NewListener(
-		*gw.bindIp+":"+strconv.Itoa(*gw.port),
-		time.Duration(10)*time.Second,
-	)
-	if e != nil {
-		glog.Fatalf("Filer listener error: %v", e)
-	}
-
-	httpS := &http.Server{Handler: defaultMux}
-	if err := httpS.Serve(gatewayListener); err != nil {
-		glog.Fatalf("Gateway Fail to serve: %v", e)
-	}
-
-}
@@ -49,6 +49,7 @@ func (iamopt *IamOptions) startIamServer() bool {
 		return false
 	}

+	util.LoadConfiguration("security", false)
 	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
 	for {
 		err = pb.WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
@@ -0,0 +1,34 @@
+package command
+
+import (
+	_ "net/http/pprof"
+
+	_ "github.com/chrislusf/seaweedfs/weed/remote_storage/azure"
+	_ "github.com/chrislusf/seaweedfs/weed/remote_storage/gcs"
+	_ "github.com/chrislusf/seaweedfs/weed/remote_storage/hdfs"
+	_ "github.com/chrislusf/seaweedfs/weed/remote_storage/s3"
+
+	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/azuresink"
+	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/b2sink"
+	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/filersink"
+	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/gcssink"
+	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/localsink"
+	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/s3sink"
+
+	_ "github.com/chrislusf/seaweedfs/weed/filer/cassandra"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/elastic/v7"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/etcd"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/hbase"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/leveldb"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/leveldb2"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/leveldb3"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/mongodb"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/mysql"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/mysql2"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/postgres"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/postgres2"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/redis"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/redis2"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/sqlite"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/tikv"
+)
@@ -54,7 +54,7 @@ func init() {
 	m.volumeSizeLimitMB = cmdMaster.Flag.Uint("volumeSizeLimitMB", 30*1000, "Master stops directing writes to oversized volumes.")
 	m.volumePreallocate = cmdMaster.Flag.Bool("volumePreallocate", false, "Preallocate disk space for volumes.")
 	// m.pulseSeconds = cmdMaster.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats")
-	m.defaultReplication = cmdMaster.Flag.String("defaultReplication", "000", "Default replication type if not specified.")
+	m.defaultReplication = cmdMaster.Flag.String("defaultReplication", "", "Default replication type if not specified.")
 	m.garbageThreshold = cmdMaster.Flag.Float64("garbageThreshold", 0.3, "threshold to vacuum and reclaim spaces")
 	m.whiteList = cmdMaster.Flag.String("whiteList", "", "comma separated Ip addresses having write permission. No limit if empty.")
 	m.disableHttp = cmdMaster.Flag.Bool("disableHttp", false, "disable http requests, only gRPC operations are allowed.")
@@ -198,7 +198,7 @@ func (m *MasterOptions) toMasterOption(whiteList []string) *weed_server.MasterOp
 		Host:              *m.ip,
 		Port:              *m.port,
 		MetaFolder:        *m.metaFolder,
-		VolumeSizeLimitMB: *m.volumeSizeLimitMB,
+		VolumeSizeLimitMB: uint32(*m.volumeSizeLimitMB),
 		VolumePreallocate: *m.volumePreallocate,
 		// PulseSeconds:            *m.pulseSeconds,
 		DefaultReplicaPlacement: *m.defaultReplication,
--- a/Show More
+++ b/Show More