2.49

java 1.6.6
some code to stress test the meta data events
2026-10-05 05:56:25 +00:00 · 2021-05-23 00:51:47 -07:00 · 2021-05-23 00:51:02 -07:00 · 2021-05-22 18:03:13 -07:00 · 2021-05-22 17:46:53 -07:00 · 2021-05-22 03:17:02 -07:00
159 changed files with 2956 additions and 1042 deletions
@@ -0,0 +1,114 @@
+name: Build Latest Containers
+on:
+  push:
+    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:
+    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=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
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
@@ -0,0 +1,118 @@
+name: Build Release Containers
+on:
+  push:
+    tags:
+      - '*'
+  workflow_dispatch: []
+
+jobs:
+  build-default:
+    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=ref,event=tag
+          flavor: |
+            latest=false
+          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
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
+  build-large:
+    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=ref,event=tag,suffix=_large_disk
+          flavor: |
+            latest=false
+          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_large
+          platforms: linux/amd64
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
@@ -33,8 +33,9 @@ jobs:
        run: echo BUILD_TIME=$(date -u +%Y-%m-%d-%H-%M) >> ${GITHUB_ENV}

      - name: Go Release Binaries
-        uses: wangyoucao577/go-release-action@v1.14
+        uses: wangyoucao577/go-release-action@v1.17
        with:
+          goversion: 1.16
          github_token: ${{ secrets.GITHUB_TOKEN }}
          goos: ${{ matrix.goos }}
          goarch: ${{ matrix.goarch }}
@@ -49,8 +50,9 @@ jobs:
          asset_name: "weed-large-disk-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"

      - name: Go Release Binaries
-        uses: wangyoucao577/go-release-action@v1.14
+        uses: wangyoucao577/go-release-action@v1.17
        with:
+          goversion: 1.16
          github_token: ${{ secrets.GITHUB_TOKEN }}
          goos: ${{ matrix.goos }}
          goarch: ${{ matrix.goarch }}
@@ -60,5 +62,5 @@ jobs:
          ldflags: -extldflags -static -X github.com/chrislusf/seaweedfs/weed/util.COMMIT=${{github.sha}}
          # Where to run `go build .`
          project_path: weed
-          binary_name: weed-
+          binary_name: weed
          asset_name: "weed-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"
@@ -1,7 +1,6 @@
 sudo: false
 language: go
 go:
-  - 1.15.x
  - 1.16.x

 before_install:
@@ -6,7 +6,7 @@
 [![Build Status](https://travis-ci.org/chrislusf/seaweedfs.svg?branch=master)](https://travis-ci.org/chrislusf/seaweedfs)
 [![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
 =================
@@ -68,12 +69,16 @@ Table of Contents
 * [License](#license)


-## Quick Start ##
+## 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:
@@ -433,7 +438,7 @@ SeaweedFS has a centralized master group to look up free volumes, while Ceph use

 Same as SeaweedFS, Ceph is also based on the object store RADOS. Ceph is rather complicated with mixed reviews.

-Ceph uses CRUSH hashing to automatically manage the data placement, which is efficient to locate the data. But the data has to be placed according to the CRUSH algorithm. Any wrong configuration would cause data loss. SeaweedFS places data by assigning them to any writable volumes. If writes to one volume failed, just pick another volume to write. Adding more volumes are also as simple as it can be.
+Ceph uses CRUSH hashing to automatically manage the data placement, which is efficient to locate the data. But the data has to be placed according to the CRUSH algorithm. Any wrong configuration would cause data loss. Topology changes, such as adding new servers to increase capacity, will cause data migration with high IO cost to fit the CRUSH algorithm. SeaweedFS places data by assigning them to any writable volumes. If writes to one volume failed, just pick another volume to write. Adding more volumes are also as simple as it can be.

 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.

@@ -1,6 +1,7 @@
 FROM alpine

-ARG RELEASE=latest # 'latest' or 'dev'
+# 'latest' or 'dev'
+ARG RELEASE=latest

 RUN \
    ARCH=$(if [ $(uname -m) == "x86_64" ] && [ $(getconf LONG_BIT) == "64" ]; then echo "amd64"; \
@@ -1,5 +1,5 @@
-FROM frolvlad/alpine-glibc as builder
-RUN apk add git go g++ fuse
+FROM amd64/golang:1.16-alpine as builder
+RUN apk add git g++ fuse
 RUN mkdir -p /go/src/github.com/chrislusf/
 RUN git clone https://github.com/chrislusf/seaweedfs /go/src/github.com/chrislusf/seaweedfs
 ARG BRANCH=${BRANCH:-master}
@@ -10,7 +10,7 @@ RUN cd /go/src/github.com/chrislusf/seaweedfs/weed \

 FROM alpine AS final
 LABEL author="Chris Lu"
-COPY --from=builder /root/go/bin/weed /usr/bin/
+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
@@ -1,5 +1,5 @@
-FROM frolvlad/alpine-glibc as builder
-RUN apk add git go g++ fuse
+FROM amd64/golang:1.16-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
 ARG BRANCH=${BRANCH:-master}
@@ -10,7 +10,7 @@ RUN cd /go/src/github.com/chrislusf/seaweedfs/weed \

 FROM alpine AS final
 LABEL author="Chris Lu"
-COPY --from=builder /root/go/bin/weed /usr/bin/
+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
@@ -5,7 +5,9 @@ all: gen
 gen: dev

 binary:
-	cd ../weed; CGO_ENABLED=0 GOOS=linux go build -ldflags "-extldflags -static"; mv weed ../docker/
+	export SWCOMMIT=$(shell git rev-parse --short HEAD)
+	export SWLDFLAGS="-X github.com/chrislusf/seaweedfs/weed/util.COMMIT=$(SWCOMMIT)"
+	cd ../weed; CGO_ENABLED=0 GOOS=linux go build -ldflags "-extldflags -static $(SWLDFLAGS)"; mv weed ../docker/

 build: binary
 	docker build --no-cache -t chrislusf/seaweedfs:local -f Dockerfile.local .
@@ -26,9 +26,10 @@ services:
  filer:
    image: chrislusf/seaweedfs:local
    ports:
+      - 8111:8111
      - 8888:8888
      - 18888:18888
-    command: '-v=1 filer -master="master:9333"'
+    command: '-v=1 filer -master="master:9333" -iam'
    depends_on:
      - master
      - volume
@@ -38,7 +38,7 @@ services:
  mount_2:
    image: chrislusf/seaweedfs:local
    privileged: true
-    entrypoint: '/bin/sh -c "mkdir -p t2 && mkdir -p cache/t2 && weed -v=4  mount -filer=filer:8888 -cacheDir=./cache/t2 -dir=./t2 -filer.path=/c1 -volumeServerAcess=publicUrl"'
+    entrypoint: '/bin/sh -c "mkdir -p t2 && mkdir -p cache/t2 && weed -v=4  mount -filer=filer:8888 -cacheDir=./cache/t2 -dir=./t2 -filer.path=/c1"'
    depends_on:
      - master
      - volume
@@ -40,7 +40,7 @@ services:
      - fuse
    volumes:
      - /Volumes/mobile_disk/99:/data
-    entrypoint: '/bin/sh -c "mkdir -p t1 && weed mount -filer=filer:8888 -dir=./t1 -cacheCapacityMB=0 -memprofile=/data/mount.mem.pprof"'
+    entrypoint: '/bin/sh -c "mkdir -p t1 && weed -v=4 mount -filer=filer:8888 -dir=./t1 -cacheCapacityMB=0 -memprofile=/data/mount.mem.pprof"'
    depends_on:
      - master
      - volume
@@ -1,6 +1,6 @@
 module github.com/chrislusf/seaweedfs

-go 1.12
+go 1.16

 require (
 	cloud.google.com/go v0.58.0 // indirect
@@ -15,7 +15,7 @@ require (
 	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/chrislusf/raft v1.0.6
+	github.com/chrislusf/raft v1.0.7
 	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/disintegration/imaging v1.6.2
@@ -39,9 +39,10 @@ require (
 	github.com/google/uuid v1.1.1
 	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
+	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/jcmturner/gofork v1.0.0 // indirect
+	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/karlseguin/ccache/v2 v2.0.7
@@ -59,9 +60,8 @@ require (
 	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/rakyll/statik v0.1.7
 	github.com/rcrowley/go-metrics v0.0.0-20190826022208-cac0b30c2563 // indirect
-	github.com/seaweedfs/fuse v1.1.3
+	github.com/seaweedfs/fuse v1.1.6
 	github.com/seaweedfs/goexif v1.0.2
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
@@ -75,7 +75,6 @@ require (
 	github.com/tidwall/match v1.0.1
 	github.com/tsuna/gohbase v0.0.0-20201125011725-348991136365
 	github.com/valyala/bytebufferpool v1.0.0
-	github.com/valyala/fasthttp v1.20.0
 	github.com/viant/assertly v0.5.4 // indirect
 	github.com/viant/ptrie v0.3.0
 	github.com/viant/toolbox v0.33.2 // indirect
@@ -89,7 +88,7 @@ require (
 	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 v0.0.0-20210220032951-036812b2e83c
+	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
@@ -159,6 +159,8 @@ github.com/chrislusf/raft v1.0.5 h1:g8GxKCSStfm0/bGBDpNEbmEXL6MJkpXX+NI0ksbX5D4=
 github.com/chrislusf/raft v1.0.5/go.mod h1:Ep5DP+mJSosjfKiix1uU7Lc2Df/SX4oGJEpZlXH5l68=
 github.com/chrislusf/raft v1.0.6 h1:wunb85WWhMKhNRn7EmdIw35D4Lmew0ZJv8oYDizR/+Y=
 github.com/chrislusf/raft v1.0.6/go.mod h1:Ep5DP+mJSosjfKiix1uU7Lc2Df/SX4oGJEpZlXH5l68=
+github.com/chrislusf/raft v1.0.7 h1:reybAIwnQOTSgTj1YgflbJFWLSN0KVQSxe8gDZYa04o=
+github.com/chrislusf/raft v1.0.7/go.mod h1:Ep5DP+mJSosjfKiix1uU7Lc2Df/SX4oGJEpZlXH5l68=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
@@ -439,6 +441,8 @@ github.com/jcmturner/gofork v0.0.0-20190328161633-dc7c13fece03 h1:FUwcHNlEqkqLjL
 github.com/jcmturner/gofork v0.0.0-20190328161633-dc7c13fece03/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
 github.com/jcmturner/gofork v1.0.0 h1:J7uCkflzTEhUZ64xqKnkDxq3kzc96ajM1Gli5ktUem8=
 github.com/jcmturner/gofork v1.0.0/go.mod h1:MK8+TM0La+2rjBD4jE12Kj1pCCxK7d2LK/UM3ncEo0o=
+github.com/jinzhu/copier v0.2.8 h1:N8MbL5niMwE3P4dOwurJixz5rMkKfujmMRFmAanSzWE=
+github.com/jinzhu/copier v0.2.8/go.mod h1:24xnZezI2Yqac9J61UC6/dG/k76ttpq0DdJI3QmUvro=
 github.com/jmespath/go-jmespath v0.0.0-20160202185014-0b12d6b521d8/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af h1:pmfjZENx5imkbgOkpRUYLnmbU7UEFbjtDA2hxJ1ichM=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
@@ -691,6 +695,12 @@ github.com/seaweedfs/fuse v1.1.1 h1:WD51YFJcBViOx8I89jeqPD+vAKl4EowzBy9GUw0plb0=
 github.com/seaweedfs/fuse v1.1.1/go.mod h1:+PP6WlkrRUG6KPE+Th2EX5To/PjHaFsvqg/UgQ39aj8=
 github.com/seaweedfs/fuse v1.1.3 h1:0DddotXwSRGbYG2kynoJyr8GHCy30Z2SpdhP3vdyijY=
 github.com/seaweedfs/fuse v1.1.3/go.mod h1:+PP6WlkrRUG6KPE+Th2EX5To/PjHaFsvqg/UgQ39aj8=
+github.com/seaweedfs/fuse v1.1.4 h1:YYqkK86agMhXRSwR+wFbRI8ikMgk3kL6PNTna1MAHyQ=
+github.com/seaweedfs/fuse v1.1.4/go.mod h1:+PP6WlkrRUG6KPE+Th2EX5To/PjHaFsvqg/UgQ39aj8=
+github.com/seaweedfs/fuse v1.1.5 h1:wyuRh/mDvrvt8ZLDS7YdPSe6nczniSx4sQFs/Jonveo=
+github.com/seaweedfs/fuse v1.1.5/go.mod h1:+PP6WlkrRUG6KPE+Th2EX5To/PjHaFsvqg/UgQ39aj8=
+github.com/seaweedfs/fuse v1.1.6 h1:kvCqaIsCEaYOBw5r8kJPUs9GcbwlIKcScnkPLT7HLuQ=
+github.com/seaweedfs/fuse v1.1.6/go.mod h1:+PP6WlkrRUG6KPE+Th2EX5To/PjHaFsvqg/UgQ39aj8=
 github.com/seaweedfs/goexif v1.0.2 h1:p+rTXYdQ2mgxd+1JaTrQ9N8DvYuw9UH9xgYmJ+Bb29E=
 github.com/seaweedfs/goexif v1.0.2/go.mod h1:MrKs5LK0HXdffrdCZrW3OIMegL2xXpC6ThLyXMyjdrk=
 github.com/secsy/goftp v0.0.0-20190720192957-f31499d7c79a h1:C6IhVTxNkhlb0tlCB6JfHOUv1f0xHPK7V8X4HlJZEJw=
@@ -965,8 +975,6 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200930132711-30421366ff76 h1:JnxiSYT3Nm0BT2a8CyvYyM6cnrWpidecD1UuSYbhKm0=
 golang.org/x/sync v0.0.0-20200930132711-30421366ff76/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "2.39"
-version: 2.39
+appVersion: "2.49"
+version: 2.49
@@ -23,6 +23,6 @@ spec:
    targetPort: {{ .Values.volume.metricsPort }}
    protocol: TCP
 {{- end }}
-selector:
+  selector:
    app: {{ template "seaweedfs.name" . }}
    component: volume
@@ -4,7 +4,7 @@ global:
  registry: ""
  repository: ""
  imageName: chrislusf/seaweedfs
-  # imageTag: "2.39" - started using {.Chart.appVersion}
+  # imageTag: "2.49" - started using {.Chart.appVersion}
  imagePullPolicy: IfNotPresent
  imagePullSecrets: imagepullsecret
  restartPolicy: Always
@@ -5,7 +5,7 @@

    <groupId>com.github.chrislusf</groupId>
    <artifactId>seaweedfs-client</artifactId>
-    <version>1.6.4</version>
+    <version>1.6.6</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>1.6.6</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>1.6.6</version>

    <parent>
        <groupId>org.sonatype.oss</groupId>
@@ -126,6 +126,18 @@ public class FilerClient extends FilerGrpcClient {

    }

+    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;
+
+    }
+
    public boolean rm(String path, boolean isRecursive, boolean ignoreRecusiveError) {

        File pathFile = new File(path);
@@ -142,10 +154,12 @@ public class FilerClient extends FilerGrpcClient {

    public boolean touch(String path, int mode) {
        String currentUser = System.getProperty("user.name");
-        return touch(path, mode, 0, 0, currentUser, new String[]{});
+
+        long now = System.currentTimeMillis() / 1000L;
+        return touch(path, now, mode, 0, 0, currentUser, new String[]{});
    }

-    public boolean touch(String path, int mode, int uid, int gid, String userName, String[] groupNames) {
+    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('\\','/');
@@ -155,17 +169,25 @@ public class FilerClient extends FilerGrpcClient {
        if (entry == null) {
            return createEntry(
                    parent,
-                    newFileEntry(name, mode, uid, gid, userName, groupNames).build()
+                    newFileEntry(name, modifiedTimeSecond, mode, uid, gid, userName, groupNames).build()
            );
        }
-        long now = System.currentTimeMillis() / 1000L;
-        FilerProto.FuseAttributes.Builder attr = entry.getAttributes().toBuilder()
-                .setMtime(now)
-                .setUid(uid)
-                .setGid(gid)
-                .setUserName(userName)
-                .clearGroupName()
-                .addAllGroupName(Arrays.asList(groupNames));
+        FilerProto.FuseAttributes.Builder attr = entry.getAttributes().toBuilder();
+        if (modifiedTimeSecond>0) {
+            attr.setMtime(modifiedTimeSecond);
+        }
+        if (uid>0) {
+            attr.setUid(uid);
+        }
+        if (gid>0) {
+            attr.setGid(gid);
+        }
+        if (userName!=null) {
+            attr.setUserName(userName);
+        }
+        if (groupNames!=null) {
+            attr.clearGroupName().addAllGroupName(Arrays.asList(groupNames));
+        }
        return updateEntry(parent, entry.toBuilder().setAttributes(attr).build());
    }

@@ -188,17 +210,15 @@ public class FilerClient extends FilerGrpcClient {
                        .addAllGroupName(Arrays.asList(groupNames)));
    }

-    public FilerProto.Entry.Builder newFileEntry(String name, int mode,
+    public FilerProto.Entry.Builder newFileEntry(String name, long modifiedTimeSecond, int mode,
                                                 int uid, int gid, String userName, String[] groupNames) {

-        long now = System.currentTimeMillis() / 1000L;
-
        return FilerProto.Entry.newBuilder()
                .setName(name)
                .setIsDirectory(false)
                .setAttributes(FilerProto.FuseAttributes.newBuilder()
-                        .setMtime(now)
-                        .setCrtime(now)
+                        .setMtime(modifiedTimeSecond)
+                        .setCrtime(modifiedTimeSecond)
                        .setUid(uid)
                        .setGid(gid)
                        .setFileMode(mode)
@@ -6,6 +6,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 import java.io.EOFException;
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.ByteBuffer;
@@ -34,6 +35,10 @@ public class SeaweedInputStream extends InputStream {
        this.entry = filerClient.lookupEntry(
                SeaweedOutputStream.getParentDirectory(fullpath),
                SeaweedOutputStream.getFileName(fullpath));
+        if(entry == null){
+            throw new FileNotFoundException();
+        }
+
        this.contentLength = SeaweedRead.fileSize(entry);

        this.visibleIntervalList = SeaweedRead.nonOverlappingVisibleIntervals(filerClient, entry.getChunksList());
@@ -39,7 +39,7 @@ public class SeaweedOutputStream extends OutputStream {
    }

    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,
@@ -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();

@@ -16,8 +16,17 @@ public class SeaweedFilerTest {
        filerClient.mkdirs("/new_folder", 0755);
        filerClient.touch("/new_folder/new_empty_file", 0755);
        filerClient.touch("/new_folder/new_empty_file2", 0755);
+        if(!filerClient.exists("/new_folder/new_empty_file")){
+            System.out.println("/new_folder/new_empty_file should exists");
+        }
+
        filerClient.rm("/new_folder/new_empty_file", false, true);
        filerClient.rm("/new_folder", true, true);
-
+        if(filerClient.exists("/new_folder/new_empty_file")){
+            System.out.println("/new_folder/new_empty_file should not exists");
+        }
+        if(!filerClient.exists("/")){
+            System.out.println("/ should exists");
+        }
    }
 }
@@ -11,13 +11,13 @@
        <dependency>
            <groupId>com.github.chrislusf</groupId>
            <artifactId>seaweedfs-client</artifactId>
-            <version>1.6.4</version>
+            <version>1.6.6</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.github.chrislusf</groupId>
            <artifactId>seaweedfs-hadoop2-client</artifactId>
-            <version>1.6.4</version>
+            <version>1.6.6</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
@@ -0,0 +1,22 @@
+package com.seaweedfs.examples;
+
+import com.google.common.io.Files;
+import seaweedfs.client.FilerClient;
+import seaweedfs.client.SeaweedOutputStream;
+
+import java.io.File;
+import java.io.IOException;
+
+public class ExampleWriteFile2 {
+
+    public static void main(String[] args) throws IOException {
+
+        FilerClient filerClient = new FilerClient("localhost", 18888);
+
+        SeaweedOutputStream seaweedOutputStream = new SeaweedOutputStream(filerClient, "/test/1");
+        Files.copy(new File("/etc/resolv.conf"), seaweedOutputStream);
+        seaweedOutputStream.close();
+
+    }
+
+}
@@ -301,7 +301,7 @@
    </snapshotRepository>
  </distributionManagement>
  <properties>
-    <seaweedfs.client.version>1.6.4</seaweedfs.client.version>
+    <seaweedfs.client.version>1.6.6</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>1.6.6</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>1.6.6</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>1.6.6</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 +1,108 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"google.golang.org/grpc"
+	"io"
+	"strconv"
+)
+
+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
+		fmt.Printf("=> %s\n", name)
+		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
+		}
+		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) {
+
+	lastTsNs := int64(0)
+
+	tailErr := pb.WithFilerClient(*tailFiler, grpc.WithInsecure(), 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: *dir,
+			SinceNs:    lastTsNs,
+		})
+		if err != nil {
+			return fmt.Errorf("listen: %v", err)
+		}
+
+		for {
+			resp, listenErr := stream.Recv()
+			if listenErr == io.EOF {
+				return nil
+			}
+			if listenErr != nil {
+				return listenErr
+			}
+			if err = eachEntryFunc(resp); err != nil {
+				return err
+			}
+			lastTsNs = resp.TsNs
+		}
+
+	})
+	if tailErr != nil {
+		fmt.Printf("tail %s: %v\n", *tailFiler, tailErr)
+	}
+}
@@ -52,7 +52,7 @@ func main() {
 }

 func genFile(grpcDialOption grpc.DialOption, i int) (*operation.AssignResult, string) {
-	assignResult, err := operation.Assign(*master, grpcDialOption, &operation.VolumeAssignRequest{
+	assignResult, err := operation.Assign(func() string { return *master }, grpcDialOption, &operation.VolumeAssignRequest{
 		Count:       1,
 		Replication: *replication,
 	})
@@ -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 -- 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=/buckets

 debug_server:
 	go build -gcflags="all=-N -l"
@@ -215,7 +215,7 @@ func runExport(cmd *Command, args []string) bool {

 	err = storage.ScanVolumeFile(util.ResolvePath(*export.dir), *export.collection, vid, storage.NeedleMapInMemory, volumeFileScanner)
 	if err != nil && err != io.EOF {
-		glog.Fatalf("Export Volume File [ERROR] %s\n", err)
+		glog.Errorf("Export Volume File [ERROR] %s\n", err)
 	}
 	return true
 }
@@ -110,7 +110,7 @@ func runFilerCat(cmd *Command, args []string) bool {

 		filerCat.filerClient = client

-		return filer.StreamContent(&filerCat, writer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64, false)
+		return filer.StreamContent(&filerCat, writer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64)

 	})

@@ -3,6 +3,7 @@ package command
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filer"
 	"io"
 	"io/ioutil"
 	"net/http"
@@ -46,6 +47,8 @@ type CopyOptions struct {
 	masters           []string
 	cipher            bool
 	ttlSec            int32
+	checkSize         *bool
+	verbose           *bool
 }

 func init() {
@@ -59,6 +62,8 @@ func init() {
 	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")
 }

 var cmdCopy = &Command{
@@ -207,16 +212,6 @@ func genFileCopyTask(fileOrDir string, destPath string, fileCopyTaskChan chan Fi
 	}

 	mode := fi.Mode()
-	if mode.IsDir() {
-		files, _ := ioutil.ReadDir(fileOrDir)
-		for _, subFileOrDir := range files {
-			if err = genFileCopyTask(fileOrDir+"/"+subFileOrDir.Name(), destPath+fi.Name()+"/", fileCopyTaskChan); err != nil {
-				return err
-			}
-		}
-		return nil
-	}
-
 	uid, gid := util.GetFileUidGid(fi)

 	fileCopyTaskChan <- FileCopyTask{
@@ -228,6 +223,16 @@ func genFileCopyTask(fileOrDir string, destPath string, fileCopyTaskChan chan Fi
 		gid:                gid,
 	}

+	if mode.IsDir() {
+		files, _ := ioutil.ReadDir(fileOrDir)
+		for _, subFileOrDir := range files {
+			cleanedDestDirectory := filepath.Clean(destPath + fi.Name())
+			if err = genFileCopyTask(fileOrDir+"/"+subFileOrDir.Name(), cleanedDestDirectory+"/", fileCopyTaskChan); err != nil {
+				return err
+			}
+		}
+	}
+
 	return nil
 }

@@ -275,6 +280,15 @@ func (worker *FileCopyWorker) doEachCopy(task FileCopyTask) error {
 		}
 	}

+	if shouldCopy, err := worker.checkExistingFileFirst(task, f); err != nil {
+		return fmt.Errorf("check existing file: %v", err)
+	} else if !shouldCopy {
+		if *worker.options.verbose {
+			fmt.Printf("skipping copied file: %v\n", f.Name())
+		}
+		return nil
+	}
+
 	// find the chunk count
 	chunkSize := int64(*worker.options.maxMB * 1024 * 1024)
 	chunkCount := 1
@@ -289,42 +303,82 @@ func (worker *FileCopyWorker) doEachCopy(task FileCopyTask) error {
 	return worker.uploadFileInChunks(task, f, chunkCount, chunkSize)
 }

+func (worker *FileCopyWorker) checkExistingFileFirst(task FileCopyTask, f *os.File) (shouldCopy bool, err error) {
+
+	shouldCopy = true
+
+	if !*worker.options.checkSize {
+		return
+	}
+
+	fileStat, err := f.Stat()
+	if err != nil {
+		shouldCopy = false
+		return
+	}
+
+	err = pb.WithGrpcFilerClient(worker.filerGrpcAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+
+		request := &filer_pb.LookupDirectoryEntryRequest{
+			Directory: task.destinationUrlPath,
+			Name:      filepath.Base(f.Name()),
+		}
+
+		resp, lookupErr := client.LookupDirectoryEntry(context.Background(), request)
+		if lookupErr != nil {
+			// mostly not found error
+			return nil
+		}
+
+		if fileStat.Size() == int64(filer.FileSize(resp.Entry)) {
+			shouldCopy = false
+		}
+
+		return nil
+	})
+	return
+}
+
 func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) error {

 	// upload the file content
 	fileName := filepath.Base(f.Name())
-	mimeType := detectMimeType(f)
-	data, err := ioutil.ReadAll(f)
-	if err != nil {
-		return err
-	}
+	var mimeType string

 	var chunks []*filer_pb.FileChunk
 	var assignResult *filer_pb.AssignVolumeResponse
 	var assignError error

-	if task.fileSize > 0 {
+	if task.fileMode&os.ModeDir == 0 && task.fileSize > 0 {
+
+		mimeType = detectMimeType(f)
+		data, err := ioutil.ReadAll(f)
+		if err != nil {
+			return err
+		}

 		// assign a volume
-		err := pb.WithGrpcFilerClient(worker.filerGrpcAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+		err = util.Retry("assignVolume", func() error {
+			return pb.WithGrpcFilerClient(worker.filerGrpcAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {

-			request := &filer_pb.AssignVolumeRequest{
-				Count:       1,
-				Replication: *worker.options.replication,
-				Collection:  *worker.options.collection,
-				TtlSec:      worker.options.ttlSec,
-				DiskType:    *worker.options.diskType,
-				Path:        task.destinationUrlPath,
-			}
+				request := &filer_pb.AssignVolumeRequest{
+					Count:       1,
+					Replication: *worker.options.replication,
+					Collection:  *worker.options.collection,
+					TtlSec:      worker.options.ttlSec,
+					DiskType:    *worker.options.diskType,
+					Path:        task.destinationUrlPath,
+				}

-			assignResult, assignError = client.AssignVolume(context.Background(), request)
-			if assignError != nil {
-				return fmt.Errorf("assign volume failure %v: %v", request, assignError)
-			}
-			if assignResult.Error != "" {
-				return fmt.Errorf("assign volume failure %v: %v", request, assignResult.Error)
-			}
-			return nil
+				assignResult, assignError = client.AssignVolume(context.Background(), request)
+				if assignError != nil {
+					return fmt.Errorf("assign volume failure %v: %v", request, assignError)
+				}
+				if assignResult.Error != "" {
+					return fmt.Errorf("assign volume failure %v: %v", request, assignResult.Error)
+				}
+				return nil
+			})
 		})
 		if err != nil {
 			return fmt.Errorf("Failed to assign from %v: %v\n", worker.options.masters, err)
@@ -339,11 +393,13 @@ func (worker *FileCopyWorker) uploadFileAsOne(task FileCopyTask, f *os.File) err
 		if uploadResult.Error != "" {
 			return fmt.Errorf("upload %v to %s result: %v\n", fileName, targetUrl, uploadResult.Error)
 		}
-		fmt.Printf("uploaded %s to %s\n", fileName, targetUrl)
+		if *worker.options.verbose {
+			fmt.Printf("uploaded %s to %s\n", fileName, targetUrl)
+		}

 		chunks = append(chunks, uploadResult.ToPbFileChunk(assignResult.FileId, 0))

-		fmt.Printf("copied %s => http://%s%s%s\n", fileName, worker.filerHost, task.destinationUrlPath, fileName)
+		fmt.Printf("copied %s => http://%s%s%s\n", f.Name(), worker.filerHost, task.destinationUrlPath, fileName)
 	}

 	if err := pb.WithGrpcFilerClient(worker.filerGrpcAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
@@ -402,31 +458,30 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 			// assign a volume
 			var assignResult *filer_pb.AssignVolumeResponse
 			var assignError error
-			err := pb.WithGrpcFilerClient(worker.filerGrpcAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-				request := &filer_pb.AssignVolumeRequest{
-					Count:       1,
-					Replication: *worker.options.replication,
-					Collection:  *worker.options.collection,
-					TtlSec:      worker.options.ttlSec,
-					DiskType:    *worker.options.diskType,
-					Path:        task.destinationUrlPath + fileName,
-				}
+			err := util.Retry("assignVolume", func() error {
+				return pb.WithGrpcFilerClient(worker.filerGrpcAddress, worker.options.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+					request := &filer_pb.AssignVolumeRequest{
+						Count:       1,
+						Replication: *worker.options.replication,
+						Collection:  *worker.options.collection,
+						TtlSec:      worker.options.ttlSec,
+						DiskType:    *worker.options.diskType,
+						Path:        task.destinationUrlPath + fileName,
+					}

-				assignResult, assignError = client.AssignVolume(context.Background(), request)
-				if assignError != nil {
-					return fmt.Errorf("assign volume failure %v: %v", request, assignError)
-				}
-				if assignResult.Error != "" {
-					return fmt.Errorf("assign volume failure %v: %v", request, assignResult.Error)
-				}
-				return nil
+					assignResult, assignError = client.AssignVolume(context.Background(), request)
+					if assignError != nil {
+						return fmt.Errorf("assign volume failure %v: %v", request, assignError)
+					}
+					if assignResult.Error != "" {
+						return fmt.Errorf("assign volume failure %v: %v", request, assignResult.Error)
+					}
+					return nil
+				})
 			})
 			if err != nil {
 				fmt.Printf("Failed to assign from %v: %v\n", worker.options.masters, err)
 			}
-			if err != nil {
-				fmt.Printf("Failed to assign from %v: %v\n", worker.options.masters, err)
-			}

 			targetUrl := "http://" + assignResult.Url + "/" + assignResult.FileId
 			if collection == "" {
@@ -498,7 +553,7 @@ func (worker *FileCopyWorker) uploadFileInChunks(task FileCopyTask, f *os.File,
 		return fmt.Errorf("upload data %v to http://%s%s%s: %v\n", fileName, worker.filerHost, task.destinationUrlPath, fileName, err)
 	}

-	fmt.Printf("copied %s => http://%s%s%s\n", fileName, worker.filerHost, task.destinationUrlPath, fileName)
+	fmt.Printf("copied %s => http://%s%s%s\n", f.Name(), worker.filerHost, task.destinationUrlPath, fileName)

 	return nil
 }
@@ -37,7 +37,7 @@ var (

 func init() {
 	cmdMount.Run = runMount // break init cycle
-	mountOptions.filer = cmdMount.Flag.String("filer", "localhost:8888", "weed filer location")
+	mountOptions.filer = cmdMount.Flag.String("filer", "localhost:8888", "comma-separated weed filer location")
 	mountOptions.filerMountRootPath = cmdMount.Flag.String("filer.path", "/", "mount this remote path from filer server")
 	mountOptions.dir = cmdMount.Flag.String("dir", ".", "mount weed filer to this directory")
 	mountOptions.dirAutoCreate = cmdMount.Flag.Bool("dirAutoCreate", false, "auto create the directory to mount to")
@@ -51,9 +51,9 @@ func runMount(cmd *Command, args []string) bool {

 func RunMount(option *MountOptions, umask os.FileMode) bool {

-	filer := *option.filer
+	filers := strings.Split(*option.filer, ",")
 	// parse filer grpc address
-	filerGrpcAddress, err := pb.ParseServerToGrpcAddress(filer)
+	filerGrpcAddresses, err := pb.ParseServersToGrpcAddresses(filers)
 	if err != nil {
 		glog.V(0).Infof("ParseFilerGrpcAddress: %v", err)
 		return true
@@ -64,22 +64,22 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 	grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
 	var cipher bool
 	for i := 0; i < 10; i++ {
-		err = pb.WithGrpcFilerClient(filerGrpcAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+		err = pb.WithOneOfGrpcFilerClients(filerGrpcAddresses, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
 			resp, err := client.GetFilerConfiguration(context.Background(), &filer_pb.GetFilerConfigurationRequest{})
 			if err != nil {
-				return fmt.Errorf("get filer grpc address %s configuration: %v", filerGrpcAddress, err)
+				return fmt.Errorf("get filer grpc address %v configuration: %v", filerGrpcAddresses, err)
 			}
 			cipher = resp.Cipher
 			return nil
 		})
 		if err != nil {
-			glog.V(0).Infof("failed to talk to filer %s: %v", filerGrpcAddress, err)
+			glog.V(0).Infof("failed to talk to filer %v: %v", filerGrpcAddresses, err)
 			glog.V(0).Infof("wait for %d seconds ...", i+1)
 			time.Sleep(time.Duration(i+1) * time.Second)
 		}
 	}
 	if err != nil {
-		glog.Errorf("failed to talk to filer %s: %v", filerGrpcAddress, err)
+		glog.Errorf("failed to talk to filer %v: %v", filerGrpcAddresses, err)
 		return true
 	}

@@ -145,7 +145,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {

 	options := []fuse.MountOption{
 		fuse.VolumeName(mountName),
-		fuse.FSName(filer + ":" + filerMountRootPath),
+		fuse.FSName(*option.filer + ":" + filerMountRootPath),
 		fuse.Subtype("seaweedfs"),
 		// fuse.NoAppleDouble(), // include .DS_Store, otherwise can not delete non-empty folders
 		fuse.NoAppleXattr(),
@@ -167,6 +167,9 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 	if *option.nonempty {
 		options = append(options, fuse.AllowNonEmptyMount())
 	}
+	if *option.readOnly {
+		options = append(options, fuse.ReadOnly())
+	}

 	// find mount point
 	mountRoot := filerMountRootPath
@@ -178,8 +181,8 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {

 	seaweedFileSystem := filesys.NewSeaweedFileSystem(&filesys.Option{
 		MountDirectory:     dir,
-		FilerAddress:       filer,
-		FilerGrpcAddress:   filerGrpcAddress,
+		FilerAddresses:     filers,
+		FilerGrpcAddresses: filerGrpcAddresses,
 		GrpcDialOption:     grpcDialOption,
 		FilerMountRootPath: mountRoot,
 		Collection:         *option.collection,
@@ -191,7 +194,6 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		CacheDir:           *option.cacheDir,
 		CacheSizeMB:        *option.cacheSizeMB,
 		DataCenter:         *option.dataCenter,
-		EntryCacheTtl:      3 * time.Second,
 		MountUid:           uid,
 		MountGid:           gid,
 		MountMode:          mountMode,
@@ -201,7 +203,6 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		VolumeServerAccess: *mountOptions.volumeServerAccess,
 		Cipher:             cipher,
 		UidGidMapper:       uidGidMapper,
-		ReadOnly:           *option.readOnly,
 	})

 	// mount
@@ -217,7 +218,7 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 		c.Close()
 	})

-	glog.V(0).Infof("mounted %s%s to %s", filer, mountRoot, dir)
+	glog.V(0).Infof("mounted %s%s to %v", *option.filer, mountRoot, dir)
 	server := fs.New(c, nil)
 	seaweedFileSystem.Server = server
 	err = server.Serve(seaweedFileSystem)
@@ -281,7 +281,7 @@ index.max_result_window = 10000
 #     Make sure they are not the same if using the same store type!
 # 4. Set enabled to true
 #
-# The following is just using cassandra as an example
+# The following is just using redis as an example
 ##########################
 [redis2.tmp]
 enabled = false
@@ -58,7 +58,8 @@ var (
 	serverDisableHttp         = cmdServer.Flag.Bool("disableHttp", false, "disable http requests, only gRPC operations are allowed.")
 	volumeDataFolders         = cmdServer.Flag.String("dir", os.TempDir(), "directories to store data files. dir[,dir]...")
 	volumeMaxDataVolumeCounts = cmdServer.Flag.String("volume.max", "8", "maximum numbers of volumes, count[,count]... If set to zero, the limit will be auto configured.")
-	volumeMinFreeSpacePercent = cmdServer.Flag.String("volume.minFreeSpacePercent", "1", "minimum free disk space (default to 1%). Low disk space will mark all volumes as ReadOnly.")
+	volumeMinFreeSpacePercent = cmdServer.Flag.String("volume.minFreeSpacePercent", "1", "minimum free disk space (default to 1%). Low disk space will mark all volumes as ReadOnly (deprecated, use minFreeSpace instead).")
+	volumeMinFreeSpace        = cmdServer.Flag.String("volume.minFreeSpace", "", "min free disk space (value<=100 as percentage like 1, other as human readable bytes, like 10GiB). Low disk space will mark all volumes as ReadOnly.")
 	serverMetricsHttpPort     = cmdServer.Flag.Int("metricsPort", 0, "Prometheus metrics listen port")

 	// pulseSeconds              = cmdServer.Flag.Int("pulseSeconds", 5, "number of seconds between heartbeats")
@@ -244,8 +245,8 @@ func runServer(cmd *Command, args []string) bool {

 	// start volume server
 	if *isStartingVolumeServer {
-		go serverOptions.v.startVolumeServer(*volumeDataFolders, *volumeMaxDataVolumeCounts, *serverWhiteListOption, *volumeMinFreeSpacePercent)
-
+		minFreeSpaces := util.MustParseMinFreeSpace(*minFreeSpace, *minFreeSpacePercent)
+		go serverOptions.v.startVolumeServer(*volumeDataFolders, *volumeMaxDataVolumeCounts, *serverWhiteListOption, minFreeSpaces)
 	}

 	if *isStartingMasterServer {
@@ -253,6 +254,4 @@ func runServer(cmd *Command, args []string) bool {
 	}

 	select {}
-
-	return true
 }
@@ -57,7 +57,6 @@ type VolumeServerOptions struct {
 	compactionMBPerSecond   *int
 	fileSizeLimitMB         *int
 	concurrentUploadLimitMB *int
-	minFreeSpacePercents    []float32
 	pprof                   *bool
 	preStopSeconds          *int
 	metricsHttpPort         *int
@@ -105,7 +104,8 @@ var (
 	volumeFolders         = cmdVolume.Flag.String("dir", os.TempDir(), "directories to store data files. dir[,dir]...")
 	maxVolumeCounts       = cmdVolume.Flag.String("max", "8", "maximum numbers of volumes, count[,count]... If set to zero, the limit will be auto configured.")
 	volumeWhiteListOption = cmdVolume.Flag.String("whiteList", "", "comma separated Ip addresses having write permission. No limit if empty.")
-	minFreeSpacePercent   = cmdVolume.Flag.String("minFreeSpacePercent", "1", "minimum free disk space (default to 1%). Low disk space will mark all volumes as ReadOnly.")
+	minFreeSpacePercent   = cmdVolume.Flag.String("minFreeSpacePercent", "1", "minimum free disk space (default to 1%). Low disk space will mark all volumes as ReadOnly (deprecated, use minFreeSpace instead).")
+	minFreeSpace          = cmdVolume.Flag.String("minFreeSpace", "", "min free disk space (value<=100 as percentage like 1, other as human readable bytes, like 10GiB). Low disk space will mark all volumes as ReadOnly.")
 )

 func runVolume(cmd *Command, args []string) bool {
@@ -120,12 +120,13 @@ func runVolume(cmd *Command, args []string) bool {

 	go stats_collect.StartMetricsServer(*v.metricsHttpPort)

-	v.startVolumeServer(*volumeFolders, *maxVolumeCounts, *volumeWhiteListOption, *minFreeSpacePercent)
+	minFreeSpaces := util.MustParseMinFreeSpace(*minFreeSpace, *minFreeSpacePercent)
+	v.startVolumeServer(*volumeFolders, *maxVolumeCounts, *volumeWhiteListOption, minFreeSpaces)

 	return true
 }

-func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, volumeWhiteListOption, minFreeSpacePercent string) {
+func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, volumeWhiteListOption string, minFreeSpaces []util.MinFreeSpace) {

 	// Set multiple folders and each folder's max volume count limit'
 	v.folders = strings.Split(volumeFolders, ",")
@@ -153,22 +154,13 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v
 		glog.Fatalf("%d directories by -dir, but only %d max is set by -max", len(v.folders), len(v.folderMaxLimits))
 	}

-	// set minFreeSpacePercent
-	minFreeSpacePercentStrings := strings.Split(minFreeSpacePercent, ",")
-	for _, freeString := range minFreeSpacePercentStrings {
-		if value, e := strconv.ParseFloat(freeString, 32); e == nil {
-			v.minFreeSpacePercents = append(v.minFreeSpacePercents, float32(value))
-		} else {
-			glog.Fatalf("The value specified in -minFreeSpacePercent not a valid value %s", freeString)
-		}
-	}
-	if len(v.minFreeSpacePercents) == 1 && len(v.folders) > 1 {
+	if len(minFreeSpaces) == 1 && len(v.folders) > 1 {
 		for i := 0; i < len(v.folders)-1; i++ {
-			v.minFreeSpacePercents = append(v.minFreeSpacePercents, v.minFreeSpacePercents[0])
+			minFreeSpaces = append(minFreeSpaces, minFreeSpaces[0])
 		}
 	}
-	if len(v.folders) != len(v.minFreeSpacePercents) {
-		glog.Fatalf("%d directories by -dir, but only %d minFreeSpacePercent is set by -minFreeSpacePercent", len(v.folders), len(v.minFreeSpacePercents))
+	if len(v.folders) != len(minFreeSpaces) {
+		glog.Fatalf("%d directories by -dir, but only %d minFreeSpacePercent is set by -minFreeSpacePercent", len(v.folders), len(minFreeSpaces))
 	}

 	// set disk types
@@ -231,7 +223,7 @@ func (v VolumeServerOptions) startVolumeServer(volumeFolders, maxVolumeCounts, v

 	volumeServer := weed_server.NewVolumeServer(volumeMux, publicVolumeMux,
 		*v.ip, *v.port, *v.publicUrl,
-		v.folders, v.folderMaxLimits, v.minFreeSpacePercents, diskTypes,
+		v.folders, v.folderMaxLimits, minFreeSpaces, diskTypes,
 		*v.idxFolder,
 		volumeNeedleMapKind,
 		strings.Split(masters, ","), 5, *v.dataCenter, *v.rack,
@@ -276,7 +276,9 @@ func (store *AbstractSqlStore) DeleteFolderChildren(ctx context.Context, fullpat
 		}
 	}

-	res, err := db.ExecContext(ctx, store.GetSqlDeleteFolderChildren(bucket), util.HashStringToLong(string(shortPath)), fullpath)
+	glog.V(4).Infof("delete %s SQL %s %d", string(shortPath), store.GetSqlDeleteFolderChildren(bucket), util.HashStringToLong(string(shortPath)))
+
+	res, err := db.ExecContext(ctx, store.GetSqlDeleteFolderChildren(bucket), util.HashStringToLong(string(shortPath)), string(shortPath))
 	if err != nil {
 		return fmt.Errorf("deleteFolderChildren %s: %s", fullpath, err)
 	}
@@ -2,7 +2,6 @@ package filer

 import (
 	"bytes"
-	"encoding/hex"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 	"math"
@@ -43,12 +42,11 @@ func ETagEntry(entry *Entry) (etag string) {

 func ETagChunks(chunks []*filer_pb.FileChunk) (etag string) {
 	if len(chunks) == 1 {
-		return chunks[0].ETag
+		return fmt.Sprintf("%x", util.Base64Md5ToBytes(chunks[0].ETag))
 	}
 	md5_digests := [][]byte{}
 	for _, c := range chunks {
-		md5_decoded, _ := hex.DecodeString(c.ETag)
-		md5_digests = append(md5_digests, md5_decoded)
+		md5_digests = append(md5_digests, util.Base64Md5ToBytes(c.ETag))
 	}
 	return fmt.Sprintf("%x-%d", util.Md5(bytes.Join(md5_digests, nil)), len(chunks))
 }
@@ -29,7 +29,7 @@ func (f *Filer) LoadBuckets() {

 	limit := int64(math.MaxInt32)

-	entries, _, err := f.ListDirectoryEntries(context.Background(), util.FullPath(f.DirBucketsPath), "", false, limit, "", "")
+	entries, _, err := f.ListDirectoryEntries(context.Background(), util.FullPath(f.DirBucketsPath), "", false, limit, "", "", "")

 	if err != nil {
 		glog.V(1).Infof("no buckets found: %v", err)
@@ -18,6 +18,7 @@ const (
 	FilerConfName         = "filer.conf"
 	IamConfigDirecotry    = "/etc/iam"
 	IamIdentityFile       = "identity.json"
+	IamPoliciesFile       = "policies.json"
 )

 type FilerConf struct {
@@ -73,7 +73,7 @@ func (f *Filer) doBatchDeleteFolderMetaAndData(ctx context.Context, entry *Entry
 	includeLastFile := false
 	if !isDeletingBucket {
 		for {
-			entries, _, err := f.ListDirectoryEntries(ctx, entry.FullPath, lastFileName, includeLastFile, PaginationSize, "", "")
+			entries, _, err := f.ListDirectoryEntries(ctx, entry.FullPath, lastFileName, includeLastFile, PaginationSize, "", "", "")
 			if err != nil {
 				glog.Errorf("list folder %s: %v", entry.FullPath, err)
 				return nil, nil, fmt.Errorf("list folder %s: %v", entry.FullPath, err)
@@ -116,13 +116,13 @@ func (f *Filer) ReadPersistedLogBuffer(startTime time.Time, eachLogEntryFn func(
 	sizeBuf := make([]byte, 4)
 	startTsNs := startTime.UnixNano()

-	dayEntries, _, listDayErr := f.ListDirectoryEntries(context.Background(), SystemLogDir, startDate, true, 366, "", "")
+	dayEntries, _, listDayErr := f.ListDirectoryEntries(context.Background(), SystemLogDir, startDate, true, 366, "", "", "")
 	if listDayErr != nil {
 		return lastTsNs, fmt.Errorf("fail to list log by day: %v", listDayErr)
 	}
 	for _, dayEntry := range dayEntries {
 		// println("checking day", dayEntry.FullPath)
-		hourMinuteEntries, _, listHourMinuteErr := f.ListDirectoryEntries(context.Background(), util.NewFullPath(SystemLogDir, dayEntry.Name()), "", false, 24*60, "", "")
+		hourMinuteEntries, _, listHourMinuteErr := f.ListDirectoryEntries(context.Background(), util.NewFullPath(SystemLogDir, dayEntry.Name()), "", false, 24*60, "", "", "")
 		if listHourMinuteErr != nil {
 			return lastTsNs, fmt.Errorf("fail to list log %s by day: %v", dayEntry.Name(), listHourMinuteErr)
 		}
@@ -52,7 +52,7 @@ func (f *Filer) maybeReloadFilerConfiguration(event *filer_pb.SubscribeMetadataR

 func (f *Filer) readEntry(chunks []*filer_pb.FileChunk) ([]byte, error) {
 	var buf bytes.Buffer
-	err := StreamContent(f.MasterClient, &buf, chunks, 0, math.MaxInt64, false)
+	err := StreamContent(f.MasterClient, &buf, chunks, 0, math.MaxInt64)
 	if err != nil {
 		return nil, err
 	}
@@ -20,9 +20,9 @@ func splitPattern(pattern string) (prefix string, restPattern string) {
 }

 // For now, prefix and namePattern are mutually exclusive
-func (f *Filer) ListDirectoryEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int64, prefix string, namePattern string) (entries []*Entry, hasMore bool, err error) {
+func (f *Filer) ListDirectoryEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int64, prefix string, namePattern string, namePatternExclude string) (entries []*Entry, hasMore bool, err error) {

-	_, err = f.StreamListDirectoryEntries(ctx, p, startFileName, inclusive, limit+1, prefix, namePattern, func(entry *Entry) bool {
+	_, err = f.StreamListDirectoryEntries(ctx, p, startFileName, inclusive, limit+1, prefix, namePattern, namePatternExclude, func(entry *Entry) bool {
 		entries = append(entries, entry)
 		return true
 	})
@@ -36,7 +36,7 @@ func (f *Filer) ListDirectoryEntries(ctx context.Context, p util.FullPath, start
 }

 // For now, prefix and namePattern are mutually exclusive
-func (f *Filer) StreamListDirectoryEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int64, prefix string, namePattern string, eachEntryFunc ListEachEntryFunc) (lastFileName string, err error) {
+func (f *Filer) StreamListDirectoryEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int64, prefix string, namePattern string, namePatternExclude string, eachEntryFunc ListEachEntryFunc) (lastFileName string, err error) {
 	if strings.HasSuffix(string(p), "/") && len(p) > 1 {
 		p = p[0 : len(p)-1]
 	}
@@ -47,30 +47,38 @@ func (f *Filer) StreamListDirectoryEntries(ctx context.Context, p util.FullPath,
 	}
 	var missedCount int64

-	missedCount, lastFileName, err = f.doListPatternMatchedEntries(ctx, p, startFileName, inclusive, limit, prefix, restNamePattern, eachEntryFunc)
+	missedCount, lastFileName, err = f.doListPatternMatchedEntries(ctx, p, startFileName, inclusive, limit, prefix, restNamePattern, namePatternExclude, eachEntryFunc)

 	for missedCount > 0 && err == nil {
-		missedCount, lastFileName, err = f.doListPatternMatchedEntries(ctx, p, lastFileName, false, missedCount, prefix, restNamePattern, eachEntryFunc)
+		missedCount, lastFileName, err = f.doListPatternMatchedEntries(ctx, p, lastFileName, false, missedCount, prefix, restNamePattern, namePatternExclude, eachEntryFunc)
 	}

 	return
 }

-func (f *Filer) doListPatternMatchedEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int64, prefix, restNamePattern string, eachEntryFunc ListEachEntryFunc) (missedCount int64, lastFileName string, err error) {
+func (f *Filer) doListPatternMatchedEntries(ctx context.Context, p util.FullPath, startFileName string, inclusive bool, limit int64, prefix, restNamePattern string, namePatternExclude string, eachEntryFunc ListEachEntryFunc) (missedCount int64, lastFileName string, err error) {

-	if len(restNamePattern) == 0 {
+	if len(restNamePattern) == 0 && len(namePatternExclude) == 0 {
 		lastFileName, err = f.doListValidEntries(ctx, p, startFileName, inclusive, limit, prefix, eachEntryFunc)
 		return 0, lastFileName, err
 	}

 	lastFileName, err = f.doListValidEntries(ctx, p, startFileName, inclusive, limit, prefix, func(entry *Entry) bool {
-		nameToTest := strings.ToLower(entry.Name())
-		if matched, matchErr := filepath.Match(restNamePattern, nameToTest[len(prefix):]); matchErr == nil && matched {
-			if !eachEntryFunc(entry) {
-				return false
+		nameToTest := entry.Name()
+		if len(namePatternExclude) > 0 {
+			if matched, matchErr := filepath.Match(namePatternExclude, nameToTest); matchErr == nil && matched {
+				missedCount++
+				return true
 			}
-		} else {
-			missedCount++
+		}
+		if len(restNamePattern) > 0 {
+			if matched, matchErr := filepath.Match(restNamePattern, nameToTest[len(prefix):]); matchErr == nil && !matched {
+				missedCount++
+				return true
+			}
+		}
+		if !eachEntryFunc(entry) {
+			return false
 		}
 		return true
 	})
@@ -149,8 +149,8 @@ func (fsw *FilerStoreWrapper) FindEntry(ctx context.Context, fp util.FullPath) (
 		stats.FilerStoreHistogram.WithLabelValues(actualStore.GetName(), "find").Observe(time.Since(start).Seconds())
 	}()

-	glog.V(4).Infof("FindEntry %s", fp)
 	entry, err = actualStore.FindEntry(ctx, fp)
+	// glog.V(4).Infof("FindEntry %s: %v", fp, err)
 	if err != nil {
 		return nil, err
 	}
@@ -51,14 +51,14 @@ func TestCreateAndFind(t *testing.T) {
 	}

 	// checking one upper directory
-	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "")
+	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
 	}

 	// checking one upper directory
-	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
@@ -77,7 +77,7 @@ func TestEmptyRoot(t *testing.T) {
 	ctx := context.Background()

 	// checking one upper directory
-	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if err != nil {
 		t.Errorf("list entries: %v", err)
 		return
@@ -49,14 +49,14 @@ func TestCreateAndFind(t *testing.T) {
 	}

 	// checking one upper directory
-	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "")
+	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
 	}

 	// checking one upper directory
-	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
@@ -75,7 +75,7 @@ func TestEmptyRoot(t *testing.T) {
 	ctx := context.Background()

 	// checking one upper directory
-	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if err != nil {
 		t.Errorf("list entries: %v", err)
 		return
@@ -49,14 +49,14 @@ func TestCreateAndFind(t *testing.T) {
 	}

 	// checking one upper directory
-	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "")
+	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
 	}

 	// checking one upper directory
-	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
@@ -75,7 +75,7 @@ func TestEmptyRoot(t *testing.T) {
 	ctx := context.Background()

 	// checking one upper directory
-	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if err != nil {
 		t.Errorf("list entries: %v", err)
 		return
@@ -71,6 +71,7 @@ func (ma *MetaAggregator) subscribeToOneFiler(f *Filer, self string, peer string

 	// when filer store is not shared by multiple filers
 	if peerSignature != f.Signature {
+		lastTsNs = 0
 		if prevTsNs, err := ma.readOffset(f, peer, peerSignature); err == nil {
 			lastTsNs = prevTsNs
 		}
@@ -27,7 +27,7 @@ func ReadEntry(masterClient *wdclient.MasterClient, filerClient filer_pb.Seaweed
 		return err
 	}

-	return StreamContent(masterClient, byteBuffer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64, false)
+	return StreamContent(masterClient, byteBuffer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64)

 }

@@ -106,7 +106,7 @@ func (c *ChunkReadAt) ReadAt(p []byte, offset int64) (n int, err error) {
 	c.readerLock.Lock()
 	defer c.readerLock.Unlock()

-	glog.V(4).Infof("ReadAt [%d,%d) of total file size %d bytes %d chunk views", offset, offset+int64(len(p)), c.fileSize, len(c.chunkViews))
+	// glog.V(4).Infof("ReadAt [%d,%d) of total file size %d bytes %d chunk views", offset, offset+int64(len(p)), c.fileSize, len(c.chunkViews))
 	return c.doReadAt(p, offset)
 }

@@ -137,20 +137,22 @@ func (c *ChunkReadAt) doReadAt(p []byte, offset int64) (n int, err error) {
 		if chunkStart >= chunkStop {
 			continue
 		}
-		glog.V(4).Infof("read [%d,%d), %d/%d chunk %s [%d,%d)", chunkStart, chunkStop, i, len(c.chunkViews), chunk.FileId, chunk.LogicOffset-chunk.Offset, chunk.LogicOffset-chunk.Offset+int64(chunk.Size))
+		// glog.V(4).Infof("read [%d,%d), %d/%d chunk %s [%d,%d)", chunkStart, chunkStop, i, len(c.chunkViews), chunk.FileId, chunk.LogicOffset-chunk.Offset, chunk.LogicOffset-chunk.Offset+int64(chunk.Size))
 		var buffer []byte
-		buffer, err = c.readFromWholeChunkData(chunk, nextChunk)
+		bufferOffset := chunkStart - chunk.LogicOffset + chunk.Offset
+		bufferLength := chunkStop - chunkStart
+		buffer, err = c.readChunkSlice(chunk, nextChunk, uint64(bufferOffset), uint64(bufferLength))
 		if err != nil {
 			glog.Errorf("fetching chunk %+v: %v\n", chunk, err)
 			return
 		}
-		bufferOffset := chunkStart - chunk.LogicOffset + chunk.Offset
-		copied := copy(p[startOffset-offset:chunkStop-chunkStart+startOffset-offset], buffer[bufferOffset:bufferOffset+chunkStop-chunkStart])
+
+		copied := copy(p[startOffset-offset:chunkStop-chunkStart+startOffset-offset], buffer)
 		n += copied
 		startOffset, remaining = startOffset+int64(copied), remaining-int64(copied)
 	}

-	glog.V(4).Infof("doReadAt [%d,%d), n:%v, err:%v", offset, offset+int64(len(p)), n, err)
+	// glog.V(4).Infof("doReadAt [%d,%d), n:%v, err:%v", offset, offset+int64(len(p)), n, err)

 	if err == nil && remaining > 0 && c.fileSize > startOffset {
 		delta := int(min(remaining, c.fileSize-startOffset))
@@ -167,6 +169,20 @@ func (c *ChunkReadAt) doReadAt(p []byte, offset int64) (n int, err error) {

 }

+func (c *ChunkReadAt) readChunkSlice(chunkView *ChunkView, nextChunkViews *ChunkView, offset, length uint64) ([]byte, error) {
+
+	chunkSlice := c.chunkCache.GetChunkSlice(chunkView.FileId, offset, length)
+	if len(chunkSlice) > 0 {
+		return chunkSlice, nil
+	}
+	chunkData, err := c.readFromWholeChunkData(chunkView, nextChunkViews)
+	if err != nil {
+		return nil, err
+	}
+	wanted := min(int64(length), int64(len(chunkData))-int64(offset))
+	return chunkData[offset : int64(offset)+wanted], nil
+}
+
 func (c *ChunkReadAt) readFromWholeChunkData(chunkView *ChunkView, nextChunkViews ...*ChunkView) (chunkData []byte, err error) {

 	if c.lastChunkFileId == chunkView.FileId {
@@ -20,6 +20,11 @@ func (m *mockChunkCache) GetChunk(fileId string, minSize uint64) (data []byte) {
 	}
 	return data
 }
+
+func (m *mockChunkCache) GetChunkSlice(fileId string, offset, length uint64) []byte {
+	return nil
+}
+
 func (m *mockChunkCache) SetChunk(fileId string, data []byte) {
 }

@@ -53,14 +53,14 @@ func TestCreateAndFind(t *testing.T) {
 	}

 	// checking one upper directory
-	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "")
+	entries, _, _ := testFiler.ListDirectoryEntries(ctx, util.FullPath("/home/chris/this/is/one"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
 	}

 	// checking one upper directory
-	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, _ = testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if len(entries) != 1 {
 		t.Errorf("list entries count: %v", len(entries))
 		return
@@ -79,7 +79,7 @@ func TestEmptyRoot(t *testing.T) {
 	ctx := context.Background()

 	// checking one upper directory
-	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "")
+	entries, _, err := testFiler.ListDirectoryEntries(ctx, util.FullPath("/"), "", false, 100, "", "", "")
 	if err != nil {
 		t.Errorf("list entries: %v", err)
 		return
@@ -3,7 +3,6 @@ package filer
 import (
 	"bytes"
 	"fmt"
-	"golang.org/x/sync/errgroup"
 	"io"
 	"math"
 	"strings"
@@ -14,7 +13,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 )

-func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int64, isCheck bool) error {
+func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int64) error {

 	glog.V(9).Infof("start to stream content for chunks: %+v\n", chunks)
 	chunkViews := ViewFromChunks(masterClient.GetLookupFileIdFunction(), chunks, offset, size)
@@ -34,17 +33,6 @@ func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, c
 		fileId2Url[chunkView.FileId] = urlStrings
 	}

-	if isCheck {
-		// Pre-check all chunkViews urls
-		gErr := new(errgroup.Group)
-		CheckAllChunkViews(chunkViews, &fileId2Url, gErr)
-		if err := gErr.Wait(); err != nil {
-			glog.Errorf("check all chunks: %v", err)
-			return fmt.Errorf("check all chunks: %v", err)
-		}
-		return nil
-	}
-
 	for _, chunkView := range chunkViews {

 		urlStrings := fileId2Url[chunkView.FileId]
@@ -53,7 +41,6 @@ func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, c
 			glog.Errorf("read chunk: %v", err)
 			return fmt.Errorf("read chunk: %v", err)
 		}
-
 		_, err = w.Write(data)
 		if err != nil {
 			glog.Errorf("write chunk: %v", err)
@@ -65,17 +52,6 @@ func StreamContent(masterClient wdclient.HasLookupFileIdFunction, w io.Writer, c

 }

-func CheckAllChunkViews(chunkViews []*ChunkView, fileId2Url *map[string][]string, gErr *errgroup.Group) {
-	for _, chunkView := range chunkViews {
-		urlStrings := (*fileId2Url)[chunkView.FileId]
-		glog.V(9).Infof("Check chunk: %+v\n url: %v", chunkView, urlStrings)
-		gErr.Go(func() error {
-			_, err := retriedFetchChunkData(urlStrings, chunkView.CipherKey, chunkView.IsGzipped, chunkView.IsFullChunk(), chunkView.Offset, int(chunkView.Size))
-			return err
-		})
-	}
-}
-
 // ----------------  ReadAllReader ----------------------------------

 func ReadAll(masterClient *wdclient.MasterClient, chunks []*filer_pb.FileChunk) ([]byte, error) {
@@ -24,9 +24,12 @@ type Dir struct {
 	wfs    *WFS
 	entry  *filer_pb.Entry
 	parent *Dir
+	id     uint64
 }

 var _ = fs.Node(&Dir{})
+
+var _ = fs.NodeIdentifier(&Dir{})
 var _ = fs.NodeCreater(&Dir{})
 var _ = fs.NodeMknoder(&Dir{})
 var _ = fs.NodeMkdirer(&Dir{})
@@ -42,6 +45,13 @@ var _ = fs.NodeRemovexattrer(&Dir{})
 var _ = fs.NodeListxattrer(&Dir{})
 var _ = fs.NodeForgetter(&Dir{})

+func (dir *Dir) Id() uint64 {
+	if dir.parent == nil {
+		return 1
+	}
+	return dir.id
+}
+
 func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {

 	// https://github.com/bazil/fuse/issues/196
@@ -53,17 +63,18 @@ func (dir *Dir) Attr(ctx context.Context, attr *fuse.Attr) error {
 		return nil
 	}

-	if err := dir.maybeLoadEntry(); err != nil {
+	entry, err := dir.maybeLoadEntry()
+	if err != nil {
 		glog.V(3).Infof("dir Attr %s,err: %+v", dir.FullPath(), err)
 		return err
 	}

-	// attr.Inode = util.FullPath(dir.FullPath()).AsInode()
-	attr.Mode = os.FileMode(dir.entry.Attributes.FileMode) | os.ModeDir
-	attr.Mtime = time.Unix(dir.entry.Attributes.Mtime, 0)
-	attr.Crtime = time.Unix(dir.entry.Attributes.Crtime, 0)
-	attr.Gid = dir.entry.Attributes.Gid
-	attr.Uid = dir.entry.Attributes.Uid
+	attr.Inode = dir.Id()
+	attr.Mode = os.FileMode(entry.Attributes.FileMode) | os.ModeDir
+	attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
+	attr.Crtime = time.Unix(entry.Attributes.Crtime, 0)
+	attr.Gid = entry.Attributes.Gid
+	attr.Uid = entry.Attributes.Uid

 	glog.V(4).Infof("dir Attr %s, attr: %+v", dir.FullPath(), attr)

@@ -74,16 +85,18 @@ func (dir *Dir) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *f

 	glog.V(4).Infof("dir Getxattr %s", dir.FullPath())

-	if err := dir.maybeLoadEntry(); err != nil {
+	entry, err := dir.maybeLoadEntry()
+	if err != nil {
 		return err
 	}

-	return getxattr(dir.entry, req, resp)
+	return getxattr(entry, req, resp)
 }

 func (dir *Dir) setRootDirAttributes(attr *fuse.Attr) {
 	// attr.Inode = 1 // filer2.FullPath(dir.Path).AsInode()
 	attr.Valid = time.Second
+	attr.Inode = dir.Id()
 	attr.Uid = dir.wfs.option.MountUid
 	attr.Gid = dir.wfs.option.MountGid
 	attr.Mode = dir.wfs.option.MountMode
@@ -102,73 +115,88 @@ func (dir *Dir) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
 	return nil
 }

-func (dir *Dir) newFile(name string, entry *filer_pb.Entry) fs.Node {
-	f := dir.wfs.fsNodeCache.EnsureFsNode(util.NewFullPath(dir.FullPath(), name), func() fs.Node {
-		return &File{
-			Name:           name,
-			dir:            dir,
-			wfs:            dir.wfs,
-			entry:          entry,
-			entryViewCache: nil,
-		}
-	})
-	f.(*File).dir = dir // in case dir node was created later
-	return f
+func (dir *Dir) newFile(name string) fs.Node {
+
+	fileFullPath := util.NewFullPath(dir.FullPath(), name)
+	fileId := fileFullPath.AsInode()
+	dir.wfs.handlesLock.Lock()
+	existingHandle, found := dir.wfs.handles[fileId]
+	dir.wfs.handlesLock.Unlock()
+
+	if found {
+		glog.V(4).Infof("newFile found opened file handle: %+v", fileFullPath)
+		return existingHandle.f
+	}
+	return &File{
+		Name: name,
+		dir:  dir,
+		wfs:  dir.wfs,
+		id:   fileId,
+	}
 }

-func (dir *Dir) newDirectory(fullpath util.FullPath, entry *filer_pb.Entry) fs.Node {
+func (dir *Dir) newDirectory(fullpath util.FullPath) fs.Node {
+
+	return &Dir{name: fullpath.Name(), wfs: dir.wfs, parent: dir, id: fullpath.AsInode()}

-	d := dir.wfs.fsNodeCache.EnsureFsNode(fullpath, func() fs.Node {
-		return &Dir{name: entry.Name, wfs: dir.wfs, entry: entry, parent: dir}
-	})
-	d.(*Dir).parent = dir // in case dir node was created later
-	return d
 }

 func (dir *Dir) Create(ctx context.Context, req *fuse.CreateRequest,
 	resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {

-	if dir.wfs.option.ReadOnly {
-		return nil, nil, fuse.EPERM
-	}
+	exclusive := req.Flags&fuse.OpenExclusive != 0
+	isDirectory := req.Mode&os.ModeDir > 0

-	request, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, req.Flags&fuse.OpenExclusive != 0)
-
-	if err != nil {
-		return nil, nil, err
+	if exclusive || isDirectory {
+		_, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, exclusive)
+		if err != nil {
+			return nil, nil, err
+		}
 	}
 	var node fs.Node
-	if request.Entry.IsDirectory {
-		node = dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name), request.Entry)
+	if isDirectory {
+		node = dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name))
 		return node, nil, nil
 	}

-	node = dir.newFile(req.Name, request.Entry)
+	node = dir.newFile(req.Name)
 	file := node.(*File)
-	fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid)
+	file.entry = &filer_pb.Entry{
+		Name:        req.Name,
+		IsDirectory: req.Mode&os.ModeDir > 0,
+		Attributes: &filer_pb.FuseAttributes{
+			Mtime:       time.Now().Unix(),
+			Crtime:      time.Now().Unix(),
+			FileMode:    uint32(req.Mode &^ dir.wfs.option.Umask),
+			Uid:         req.Uid,
+			Gid:         req.Gid,
+			Collection:  dir.wfs.option.Collection,
+			Replication: dir.wfs.option.Replication,
+			TtlSec:      dir.wfs.option.TtlSec,
+		},
+	}
+	file.dirtyMetadata = true
+	fh := dir.wfs.AcquireHandle(file, req.Uid, req.Gid, req.Flags&fuse.OpenWriteOnly > 0)
 	return file, fh, nil

 }

 func (dir *Dir) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {

-	if dir.wfs.option.ReadOnly {
-		return nil, fuse.EPERM
-	}
-
-	request, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, false)
+	_, err := dir.doCreateEntry(req.Name, req.Mode, req.Uid, req.Gid, false)

 	if err != nil {
 		return nil, err
 	}
 	var node fs.Node
-	node = dir.newFile(req.Name, request.Entry)
+	node = dir.newFile(req.Name)
 	return node, nil
 }

-func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, exlusive bool) (*filer_pb.CreateEntryRequest, error) {
+func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, exclusive bool) (*filer_pb.CreateEntryRequest, error) {
+	dirFullPath := dir.FullPath()
 	request := &filer_pb.CreateEntryRequest{
-		Directory: dir.FullPath(),
+		Directory: dirFullPath,
 		Entry: &filer_pb.Entry{
 			Name:        name,
 			IsDirectory: mode&os.ModeDir > 0,
@@ -183,10 +211,10 @@ func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, ex
 				TtlSec:      dir.wfs.option.TtlSec,
 			},
 		},
-		OExcl:      exlusive,
+		OExcl:      exclusive,
 		Signatures: []int32{dir.wfs.signature},
 	}
-	glog.V(1).Infof("create %s/%s", dir.FullPath(), name)
+	glog.V(1).Infof("create %s/%s", dirFullPath, name)

 	err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {

@@ -197,11 +225,14 @@ func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, ex
 			if strings.Contains(err.Error(), "EEXIST") {
 				return fuse.EEXIST
 			}
-			glog.V(0).Infof("create %s/%s: %v", dir.FullPath(), name, err)
+			glog.V(0).Infof("create %s/%s: %v", dirFullPath, name, err)
 			return fuse.EIO
 		}

-		dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
+		if err := dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
+			glog.Errorf("local InsertEntry dir %s/%s: %v", dirFullPath, name, err)
+			return fuse.EIO
+		}

 		return nil
 	})
@@ -210,10 +241,6 @@ func (dir *Dir) doCreateEntry(name string, mode os.FileMode, uid, gid uint32, ex

 func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {

-	if dir.wfs.option.ReadOnly {
-		return nil, fuse.EPERM
-	}
-
 	glog.V(4).Infof("mkdir %s: %s", dir.FullPath(), req.Name)

 	newEntry := &filer_pb.Entry{
@@ -228,35 +255,40 @@ func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, err
 		},
 	}

+	dirFullPath := dir.FullPath()
+
 	err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {

 		dir.wfs.mapPbIdFromLocalToFiler(newEntry)
 		defer dir.wfs.mapPbIdFromFilerToLocal(newEntry)

 		request := &filer_pb.CreateEntryRequest{
-			Directory:  dir.FullPath(),
+			Directory:  dirFullPath,
 			Entry:      newEntry,
 			Signatures: []int32{dir.wfs.signature},
 		}

 		glog.V(1).Infof("mkdir: %v", request)
 		if err := filer_pb.CreateEntry(client, request); err != nil {
-			glog.V(0).Infof("mkdir %s/%s: %v", dir.FullPath(), req.Name, err)
+			glog.V(0).Infof("mkdir %s/%s: %v", dirFullPath, req.Name, err)
 			return err
 		}

-		dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
+		if err := dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
+			glog.Errorf("local mkdir dir %s/%s: %v", dirFullPath, req.Name, err)
+			return fuse.EIO
+		}

 		return nil
 	})

 	if err == nil {
-		node := dir.newDirectory(util.NewFullPath(dir.FullPath(), req.Name), newEntry)
+		node := dir.newDirectory(util.NewFullPath(dirFullPath, req.Name))

 		return node, nil
 	}

-	glog.V(0).Infof("mkdir %s/%s: %v", dir.FullPath(), req.Name, err)
+	glog.V(0).Infof("mkdir %s/%s: %v", dirFullPath, req.Name, err)

 	return nil, fuse.EIO
 }
@@ -264,7 +296,7 @@ func (dir *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, err
 func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (node fs.Node, err error) {

 	dirPath := util.FullPath(dir.FullPath())
-	glog.V(4).Infof("dir Lookup %s: %s by %s", dirPath, req.Name, req.Header.String())
+	// glog.V(4).Infof("dir Lookup %s: %s by %s", dirPath, req.Name, req.Header.String())

 	fullFilePath := dirPath.Child(req.Name)
 	visitErr := meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath)
@@ -272,40 +304,41 @@ func (dir *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.
 		glog.Errorf("dir Lookup %s: %v", dirPath, visitErr)
 		return nil, fuse.EIO
 	}
-	cachedEntry, cacheErr := dir.wfs.metaCache.FindEntry(context.Background(), fullFilePath)
+	localEntry, cacheErr := dir.wfs.metaCache.FindEntry(context.Background(), fullFilePath)
 	if cacheErr == filer_pb.ErrNotFound {
 		return nil, fuse.ENOENT
 	}
-	entry := cachedEntry.ToProtoEntry()

-	if entry == nil {
+	if localEntry == nil {
 		// glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath)
-		entry, err = filer_pb.GetEntry(dir.wfs, fullFilePath)
+		entry, err := filer_pb.GetEntry(dir.wfs, fullFilePath)
 		if err != nil {
 			glog.V(1).Infof("dir GetEntry %s: %v", fullFilePath, err)
 			return nil, fuse.ENOENT
 		}
+		localEntry = filer.FromPbEntry(string(dirPath), entry)
 	} else {
 		glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath)
 	}

-	if entry != nil {
-		if entry.IsDirectory {
-			node = dir.newDirectory(fullFilePath, entry)
+	if localEntry != nil {
+		if localEntry.IsDirectory() {
+			node = dir.newDirectory(fullFilePath)
 		} else {
-			node = dir.newFile(req.Name, entry)
+			node = dir.newFile(req.Name)
 		}

 		// resp.EntryValid = time.Second
-		// resp.Attr.Inode = fullFilePath.AsInode()
+		resp.Attr.Inode = fullFilePath.AsInode()
 		resp.Attr.Valid = time.Second
-		resp.Attr.Mtime = time.Unix(entry.Attributes.Mtime, 0)
-		resp.Attr.Crtime = time.Unix(entry.Attributes.Crtime, 0)
-		resp.Attr.Mode = os.FileMode(entry.Attributes.FileMode)
-		resp.Attr.Gid = entry.Attributes.Gid
-		resp.Attr.Uid = entry.Attributes.Uid
-		if entry.HardLinkCounter > 0 {
-			resp.Attr.Nlink = uint32(entry.HardLinkCounter)
+		resp.Attr.Size = localEntry.FileSize
+		resp.Attr.Mtime = localEntry.Attr.Mtime
+		resp.Attr.Crtime = localEntry.Attr.Crtime
+		resp.Attr.Mode = localEntry.Attr.Mode
+		resp.Attr.Gid = localEntry.Attr.Gid
+		resp.Attr.Uid = localEntry.Attr.Uid
+		if localEntry.HardLinkCounter > 0 {
+			resp.Attr.Nlink = uint32(localEntry.HardLinkCounter)
 		}

 		return node, nil
@@ -320,15 +353,14 @@ func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
 	dirPath := util.FullPath(dir.FullPath())
 	glog.V(4).Infof("dir ReadDirAll %s", dirPath)

-	processEachEntryFn := func(entry *filer_pb.Entry, isLast bool) error {
-		if entry.IsDirectory {
-			dirent := fuse.Dirent{Name: entry.Name, Type: fuse.DT_Dir}
+	processEachEntryFn := func(entry *filer.Entry, isLast bool) {
+		if entry.IsDirectory() {
+			dirent := fuse.Dirent{Name: entry.Name(), Type: fuse.DT_Dir, Inode: dirPath.Child(entry.Name()).AsInode()}
 			ret = append(ret, dirent)
 		} else {
-			dirent := fuse.Dirent{Name: entry.Name, Type: findFileType(uint16(entry.Attributes.FileMode))}
+			dirent := fuse.Dirent{Name: entry.Name(), Type: findFileType(uint16(entry.Attr.Mode)), Inode: dirPath.Child(entry.Name()).AsInode()}
 			ret = append(ret, dirent)
 		}
-		return nil
 	}

 	if err = meta_cache.EnsureVisited(dir.wfs.metaCache, dir.wfs, dirPath); err != nil {
@@ -336,7 +368,7 @@ func (dir *Dir) ReadDirAll(ctx context.Context) (ret []fuse.Dirent, err error) {
 		return nil, fuse.EIO
 	}
 	listErr := dir.wfs.metaCache.ListDirectoryEntries(context.Background(), dirPath, "", false, int64(math.MaxInt32), func(entry *filer.Entry) bool {
-		processEachEntryFn(entry.ToProtoEntry(), false)
+		processEachEntryFn(entry, false)
 		return true
 	})
 	if listErr != nil {
@@ -368,10 +400,6 @@ func findFileType(mode uint16) fuse.DirentType {

 func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {

-	if dir.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	if !req.Dir {
 		return dir.removeOneFile(req)
 	}
@@ -382,40 +410,32 @@ func (dir *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {

 func (dir *Dir) removeOneFile(req *fuse.RemoveRequest) error {

-	filePath := util.NewFullPath(dir.FullPath(), req.Name)
+	dirFullPath := dir.FullPath()
+	filePath := util.NewFullPath(dirFullPath, req.Name)
 	entry, err := filer_pb.GetEntry(dir.wfs, filePath)
 	if err != nil {
 		return err
 	}
-	if entry == nil {
-		return nil
-	}

 	// first, ensure the filer store can correctly delete
 	glog.V(3).Infof("remove file: %v", req)
-	isDeleteData := entry.HardLinkCounter <= 1
-	err = filer_pb.Remove(dir.wfs, dir.FullPath(), req.Name, isDeleteData, false, false, false, []int32{dir.wfs.signature})
+	isDeleteData := entry != nil && entry.HardLinkCounter <= 1
+	err = filer_pb.Remove(dir.wfs, dirFullPath, req.Name, isDeleteData, false, false, false, []int32{dir.wfs.signature})
 	if err != nil {
-		glog.V(3).Infof("not found remove file %s/%s: %v", dir.FullPath(), req.Name, err)
+		glog.V(3).Infof("not found remove file %s: %v", filePath, err)
 		return fuse.ENOENT
 	}

 	// then, delete meta cache and fsNode cache
-	dir.wfs.metaCache.DeleteEntry(context.Background(), filePath)
-
-	// clear entry inside the file
-	fsNode := dir.wfs.fsNodeCache.GetFsNode(filePath)
-	dir.wfs.fsNodeCache.DeleteFsNode(filePath)
-	if fsNode != nil {
-		if file, ok := fsNode.(*File); ok {
-			file.clearEntry()
-		}
+	if err = dir.wfs.metaCache.DeleteEntry(context.Background(), filePath); err != nil {
+		glog.V(3).Infof("local DeleteEntry %s: %v", filePath, err)
+		return fuse.ESTALE
 	}

 	// remove current file handle if any
 	dir.wfs.handlesLock.Lock()
 	defer dir.wfs.handlesLock.Unlock()
-	inodeId := util.NewFullPath(dir.FullPath(), req.Name).AsInode()
+	inodeId := filePath.AsInode()
 	delete(dir.wfs.handles, inodeId)

 	return nil
@@ -424,20 +444,20 @@ func (dir *Dir) removeOneFile(req *fuse.RemoveRequest) error {

 func (dir *Dir) removeFolder(req *fuse.RemoveRequest) error {

+	dirFullPath := dir.FullPath()
 	glog.V(3).Infof("remove directory entry: %v", req)
 	ignoreRecursiveErr := true // ignore recursion error since the OS should manage it
-	err := filer_pb.Remove(dir.wfs, dir.FullPath(), req.Name, true, false, ignoreRecursiveErr, false, []int32{dir.wfs.signature})
+	err := filer_pb.Remove(dir.wfs, dirFullPath, req.Name, true, true, ignoreRecursiveErr, false, []int32{dir.wfs.signature})
 	if err != nil {
-		glog.V(0).Infof("remove %s/%s: %v", dir.FullPath(), req.Name, err)
+		glog.V(0).Infof("remove %s/%s: %v", dirFullPath, req.Name, err)
 		if strings.Contains(err.Error(), "non-empty") {
 			return fuse.EEXIST
 		}
 		return fuse.ENOENT
 	}

-	t := util.NewFullPath(dir.FullPath(), req.Name)
+	t := util.NewFullPath(dirFullPath, req.Name)
 	dir.wfs.metaCache.DeleteEntry(context.Background(), t)
-	dir.wfs.fsNodeCache.DeleteFsNode(t)

 	return nil

@@ -445,73 +465,64 @@ func (dir *Dir) removeFolder(req *fuse.RemoveRequest) error {

 func (dir *Dir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {

-	if dir.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	glog.V(4).Infof("%v dir setattr %+v", dir.FullPath(), req)

-	if err := dir.maybeLoadEntry(); err != nil {
+	entry, err := dir.maybeLoadEntry()
+	if err != nil {
 		return err
 	}

 	if req.Valid.Mode() {
-		dir.entry.Attributes.FileMode = uint32(req.Mode)
+		entry.Attributes.FileMode = uint32(req.Mode)
 	}

 	if req.Valid.Uid() {
-		dir.entry.Attributes.Uid = req.Uid
+		entry.Attributes.Uid = req.Uid
 	}

 	if req.Valid.Gid() {
-		dir.entry.Attributes.Gid = req.Gid
+		entry.Attributes.Gid = req.Gid
 	}

 	if req.Valid.Mtime() {
-		dir.entry.Attributes.Mtime = req.Mtime.Unix()
+		entry.Attributes.Mtime = req.Mtime.Unix()
 	}

-	return dir.saveEntry()
+	return dir.saveEntry(entry)

 }

 func (dir *Dir) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {

-	if dir.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	glog.V(4).Infof("dir Setxattr %s: %s", dir.FullPath(), req.Name)

-	if err := dir.maybeLoadEntry(); err != nil {
+	entry, err := dir.maybeLoadEntry()
+	if err != nil {
 		return err
 	}

-	if err := setxattr(dir.entry, req); err != nil {
+	if err := setxattr(entry, req); err != nil {
 		return err
 	}

-	return dir.saveEntry()
+	return dir.saveEntry(entry)

 }

 func (dir *Dir) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {

-	if dir.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	glog.V(4).Infof("dir Removexattr %s: %s", dir.FullPath(), req.Name)

-	if err := dir.maybeLoadEntry(); err != nil {
+	entry, err := dir.maybeLoadEntry()
+	if err != nil {
 		return err
 	}

-	if err := removexattr(dir.entry, req); err != nil {
+	if err := removexattr(entry, req); err != nil {
 		return err
 	}

-	return dir.saveEntry()
+	return dir.saveEntry(entry)

 }

@@ -519,11 +530,12 @@ func (dir *Dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp

 	glog.V(4).Infof("dir Listxattr %s", dir.FullPath())

-	if err := dir.maybeLoadEntry(); err != nil {
+	entry, err := dir.maybeLoadEntry()
+	if err != nil {
 		return err
 	}

-	if err := listxattr(dir.entry, req, resp); err != nil {
+	if err := listxattr(entry, req, resp); err != nil {
 		return err
 	}

@@ -533,34 +545,25 @@ func (dir *Dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp

 func (dir *Dir) Forget() {
 	glog.V(4).Infof("Forget dir %s", dir.FullPath())
-
-	dir.wfs.fsNodeCache.DeleteFsNode(util.FullPath(dir.FullPath()))
 }

-func (dir *Dir) maybeLoadEntry() error {
-	if dir.entry == nil {
-		parentDirPath, name := util.FullPath(dir.FullPath()).DirAndName()
-		entry, err := dir.wfs.maybeLoadEntry(parentDirPath, name)
-		if err != nil {
-			return err
-		}
-		dir.entry = entry
-	}
-	return nil
+func (dir *Dir) maybeLoadEntry() (*filer_pb.Entry, error) {
+	parentDirPath, name := util.FullPath(dir.FullPath()).DirAndName()
+	return dir.wfs.maybeLoadEntry(parentDirPath, name)
 }

-func (dir *Dir) saveEntry() error {
+func (dir *Dir) saveEntry(entry *filer_pb.Entry) error {

 	parentDir, name := util.FullPath(dir.FullPath()).DirAndName()

 	return dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {

-		dir.wfs.mapPbIdFromLocalToFiler(dir.entry)
-		defer dir.wfs.mapPbIdFromFilerToLocal(dir.entry)
+		dir.wfs.mapPbIdFromLocalToFiler(entry)
+		defer dir.wfs.mapPbIdFromFilerToLocal(entry)

 		request := &filer_pb.UpdateEntryRequest{
 			Directory:  parentDir,
-			Entry:      dir.entry,
+			Entry:      entry,
 			Signatures: []int32{dir.wfs.signature},
 		}

@@ -571,7 +574,10 @@ func (dir *Dir) saveEntry() error {
 			return fuse.EIO
 		}

-		dir.wfs.metaCache.UpdateEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
+		if err := dir.wfs.metaCache.UpdateEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
+			glog.Errorf("UpdateEntry dir %s/%s: %v", parentDir, name, err)
+			return fuse.ESTALE
+		}

 		return nil
 	})
@@ -24,10 +24,6 @@ const (

 func (dir *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (fs.Node, error) {

-	if dir.wfs.option.ReadOnly {
-		return nil, fuse.EPERM
-	}
-
 	oldFile, ok := old.(*File)
 	if !ok {
 		glog.Errorf("old node is not a file: %+v", old)
@@ -35,11 +31,11 @@ func (dir *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (f

 	glog.V(4).Infof("Link: %v/%v -> %v/%v", oldFile.dir.FullPath(), oldFile.Name, dir.FullPath(), req.NewName)

-	if _, err := oldFile.maybeLoadEntry(ctx); err != nil {
+	oldEntry, err := oldFile.maybeLoadEntry(ctx)
+	if err != nil {
 		return nil, err
 	}

-	oldEntry := oldFile.getEntry()
 	if oldEntry == nil {
 		return nil, fuse.EIO
 	}
@@ -72,7 +68,7 @@ func (dir *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (f
 	}

 	// apply changes to the filer, and also apply to local metaCache
-	err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+	err = dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {

 		dir.wfs.mapPbIdFromLocalToFiler(request.Entry)
 		defer dir.wfs.mapPbIdFromFilerToLocal(request.Entry)
@@ -97,11 +93,8 @@ func (dir *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (f
 	}

 	// create new file node
-	newNode := dir.newFile(req.NewName, request.Entry)
+	newNode := dir.newFile(req.NewName)
 	newFile := newNode.(*File)
-	if _, err := newFile.maybeLoadEntry(ctx); err != nil {
-		return nil, err
-	}

 	return newFile, err

@@ -109,10 +102,6 @@ func (dir *Dir) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (f

 func (dir *Dir) Symlink(ctx context.Context, req *fuse.SymlinkRequest) (fs.Node, error) {

-	if dir.wfs.option.ReadOnly {
-		return nil, fuse.EPERM
-	}
-
 	glog.V(4).Infof("Symlink: %v/%v to %v", dir.FullPath(), req.NewName, req.Target)

 	request := &filer_pb.CreateEntryRequest{
@@ -147,7 +136,7 @@ func (dir *Dir) Symlink(ctx context.Context, req *fuse.SymlinkRequest) (fs.Node,
 		return nil
 	})

-	symlink := dir.newFile(req.NewName, request.Entry)
+	symlink := dir.newFile(req.NewName)

 	return symlink, err

@@ -13,10 +13,6 @@ import (

 func (dir *Dir) Rename(ctx context.Context, req *fuse.RenameRequest, newDirectory fs.Node) error {

-	if dir.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	newDir := newDirectory.(*Dir)

 	newPath := util.NewFullPath(newDir.FullPath(), req.NewName)
@@ -68,19 +64,35 @@ func (dir *Dir) Rename(ctx context.Context, req *fuse.RenameRequest, newDirector
 		return fuse.EIO
 	}

-	// fmt.Printf("rename path: %v => %v\n", oldPath, newPath)
-	dir.wfs.fsNodeCache.Move(oldPath, newPath)
+	oldFsNode := NodeWithId(oldPath.AsInode())
+	newFsNode := NodeWithId(newPath.AsInode())
+	dir.wfs.Server.InvalidateInternalNode(oldFsNode, newFsNode, func(internalNode fs.Node) {
+		if file, ok := internalNode.(*File); ok {
+			glog.V(4).Infof("internal file node %s", file.Name)
+			file.Name = req.NewName
+			file.id = uint64(newFsNode)
+			file.dir = newDir
+		}
+		if dir, ok := internalNode.(*Dir); ok {
+			glog.V(4).Infof("internal dir node %s", dir.name)
+			dir.name = req.NewName
+			dir.id = uint64(newFsNode)
+			dir.parent = newDir
+		}
+	})

 	// change file handle
 	dir.wfs.handlesLock.Lock()
 	defer dir.wfs.handlesLock.Unlock()
 	inodeId := oldPath.AsInode()
 	existingHandle, found := dir.wfs.handles[inodeId]
+	glog.V(4).Infof("has open filehandle %s: %v", oldPath, found)
 	if !found || existingHandle == nil {
-		return err
+		return nil
 	}
+	glog.V(4).Infof("opened filehandle %s => %s", oldPath, newPath)
 	delete(dir.wfs.handles, inodeId)
 	dir.wfs.handles[newPath.AsInode()] = existingHandle

-	return err
+	return nil
 }
@@ -1,7 +1,6 @@
 package filesys

 import (
-	"bytes"
 	"io"

 	"github.com/chrislusf/seaweedfs/weed/util"
@@ -214,7 +213,7 @@ func (l *IntervalLinkedList) ToReader() io.Reader {
 	readers = append(readers, util.NewBytesReader(t.Data))
 	for t.Next != nil {
 		t = t.Next
-		readers = append(readers, bytes.NewReader(t.Data))
+		readers = append(readers, util.NewBytesReader(t.Data))
 	}
 	if len(readers) == 1 {
 		return readers[0]
@@ -0,0 +1,10 @@
+package filesys
+
+type DirtyPages interface {
+	AddPage(offset int64, data []byte)
+	FlushData() error
+	ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64)
+	GetStorageOptions() (collection, replication string)
+	SetWriteOnly(writeOnly bool)
+	GetWriteOnly() (writeOnly bool)
+}
@@ -2,6 +2,7 @@ package filesys

 import (
 	"bytes"
+	"fmt"
 	"io"
 	"sync"
 	"time"
@@ -13,6 +14,7 @@ import (
 type ContinuousDirtyPages struct {
 	intervals      *ContinuousIntervals
 	f              *File
+	writeOnly      bool
 	writeWaitGroup sync.WaitGroup
 	chunkAddLock   sync.Mutex
 	lastErr        error
@@ -20,10 +22,11 @@ type ContinuousDirtyPages struct {
 	replication    string
 }

-func newDirtyPages(file *File) *ContinuousDirtyPages {
+func newContinuousDirtyPages(file *File, writeOnly bool) *ContinuousDirtyPages {
 	dirtyPages := &ContinuousDirtyPages{
 		intervals: &ContinuousIntervals{},
 		f:         file,
+		writeOnly: writeOnly,
 	}
 	return dirtyPages
 }
@@ -57,6 +60,16 @@ func (pages *ContinuousDirtyPages) flushAndSave(offset int64, data []byte) {
 	return
 }

+func (pages *ContinuousDirtyPages) FlushData() error {
+
+	pages.saveExistingPagesToStorage()
+	pages.writeWaitGroup.Wait()
+	if pages.lastErr != nil {
+		return fmt.Errorf("flush data: %v", pages.lastErr)
+	}
+	return nil
+}
+
 func (pages *ContinuousDirtyPages) saveExistingPagesToStorage() {
 	for pages.saveExistingLargestPageToStorage() {
 	}
@@ -94,7 +107,7 @@ func (pages *ContinuousDirtyPages) saveToStorage(reader io.Reader, offset int64,
 		defer pages.writeWaitGroup.Done()

 		reader = io.LimitReader(reader, size)
-		chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath())(reader, pages.f.Name, offset)
+		chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath(), pages.writeOnly)(reader, pages.f.Name, offset)
 		if err != nil {
 			glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.f.fullpath(), offset, offset+size, err)
 			pages.lastErr = err
@@ -131,3 +144,17 @@ func min(x, y int64) int64 {
 func (pages *ContinuousDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
 	return pages.intervals.ReadDataAt(data, startOffset)
 }
+
+func (pages *ContinuousDirtyPages) GetStorageOptions() (collection, replication string) {
+	return pages.collection, pages.replication
+}
+
+func (pages *ContinuousDirtyPages) SetWriteOnly(writeOnly bool) {
+	if pages.writeOnly {
+		pages.writeOnly = writeOnly
+	}
+}
+
+func (pages *ContinuousDirtyPages) GetWriteOnly() (writeOnly bool) {
+	return pages.writeOnly
+}
@@ -0,0 +1,157 @@
+package filesys
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"io"
+	"os"
+	"sync"
+	"time"
+)
+
+type TempFileDirtyPages struct {
+	f                *File
+	tf               *os.File
+	writtenIntervals *WrittenContinuousIntervals
+	writeOnly        bool
+	writeWaitGroup   sync.WaitGroup
+	pageAddLock      sync.Mutex
+	chunkAddLock     sync.Mutex
+	lastErr          error
+	collection       string
+	replication      string
+}
+
+func newTempFileDirtyPages(file *File, writeOnly bool) *TempFileDirtyPages {
+
+	tempFile := &TempFileDirtyPages{
+		f:                file,
+		writeOnly:        writeOnly,
+		writtenIntervals: &WrittenContinuousIntervals{},
+	}
+
+	return tempFile
+}
+
+func (pages *TempFileDirtyPages) AddPage(offset int64, data []byte) {
+
+	pages.pageAddLock.Lock()
+	defer pages.pageAddLock.Unlock()
+
+	if pages.tf == nil {
+		tf, err := os.CreateTemp(pages.f.wfs.option.getTempFilePageDir(), "")
+		if err != nil {
+			glog.Errorf("create temp file: %v", err)
+			pages.lastErr = err
+			return
+		}
+		pages.tf = tf
+		pages.writtenIntervals.tempFile = tf
+		pages.writtenIntervals.lastOffset = 0
+	}
+
+	writtenOffset := pages.writtenIntervals.lastOffset
+	dataSize := int64(len(data))
+
+	// glog.V(4).Infof("%s AddPage %v at %d [%d,%d)", pages.f.fullpath(), pages.tf.Name(), writtenOffset, offset, offset+dataSize)
+
+	if _, err := pages.tf.WriteAt(data, writtenOffset); err != nil {
+		pages.lastErr = err
+	} else {
+		pages.writtenIntervals.AddInterval(writtenOffset, len(data), offset)
+		pages.writtenIntervals.lastOffset += dataSize
+	}
+
+	// pages.writtenIntervals.debug()
+
+	return
+}
+
+func (pages *TempFileDirtyPages) FlushData() error {
+
+	pages.saveExistingPagesToStorage()
+	pages.writeWaitGroup.Wait()
+	if pages.lastErr != nil {
+		return fmt.Errorf("flush data: %v", pages.lastErr)
+	}
+	pages.pageAddLock.Lock()
+	defer pages.pageAddLock.Unlock()
+	if pages.tf != nil {
+
+		pages.writtenIntervals.tempFile = nil
+		pages.writtenIntervals.lists = nil
+
+		pages.tf.Close()
+		os.Remove(pages.tf.Name())
+		pages.tf = nil
+	}
+	return nil
+}
+
+func (pages *TempFileDirtyPages) saveExistingPagesToStorage() {
+
+	pageSize := pages.f.wfs.option.ChunkSizeLimit
+
+	// glog.V(4).Infof("%v saveExistingPagesToStorage %d lists", pages.f.Name, len(pages.writtenIntervals.lists))
+
+	for _, list := range pages.writtenIntervals.lists {
+		listStopOffset := list.Offset() + list.Size()
+		for uploadedOffset:=int64(0); uploadedOffset < listStopOffset; uploadedOffset += pageSize {
+			start, stop := max(list.Offset(), uploadedOffset), min(listStopOffset, uploadedOffset+pageSize)
+			if start >= stop {
+				continue
+			}
+			// glog.V(4).Infof("uploading %v [%d,%d) %d/%d", pages.f.Name, start, stop, i, len(pages.writtenIntervals.lists))
+			pages.saveToStorage(list.ToReader(start, stop), start, stop-start)
+		}
+	}
+
+}
+
+func (pages *TempFileDirtyPages) saveToStorage(reader io.Reader, offset int64, size int64) {
+
+	mtime := time.Now().UnixNano()
+	pages.writeWaitGroup.Add(1)
+	writer := func() {
+		defer pages.writeWaitGroup.Done()
+
+		reader = io.LimitReader(reader, size)
+		chunk, collection, replication, err := pages.f.wfs.saveDataAsChunk(pages.f.fullpath(), pages.writeOnly)(reader, pages.f.Name, offset)
+		if err != nil {
+			glog.V(0).Infof("%s saveToStorage [%d,%d): %v", pages.f.fullpath(), offset, offset+size, err)
+			pages.lastErr = err
+			return
+		}
+		chunk.Mtime = mtime
+		pages.collection, pages.replication = collection, replication
+		pages.chunkAddLock.Lock()
+		defer pages.chunkAddLock.Unlock()
+		pages.f.addChunks([]*filer_pb.FileChunk{chunk})
+		glog.V(3).Infof("%s saveToStorage %s [%d,%d)", pages.f.fullpath(), chunk.FileId, offset, offset+size)
+	}
+
+	if pages.f.wfs.concurrentWriters != nil {
+		pages.f.wfs.concurrentWriters.Execute(writer)
+	} else {
+		go writer()
+	}
+}
+
+func (pages *TempFileDirtyPages) ReadDirtyDataAt(data []byte, startOffset int64) (maxStop int64) {
+	return pages.writtenIntervals.ReadDataAt(data, startOffset)
+}
+
+func (pages *TempFileDirtyPages) GetStorageOptions() (collection, replication string) {
+	return pages.collection, pages.replication
+}
+
+func (pages *TempFileDirtyPages) SetWriteOnly(writeOnly bool) {
+	if pages.writeOnly {
+		pages.writeOnly = writeOnly
+	}
+}
+
+func (pages *TempFileDirtyPages) GetWriteOnly() (writeOnly bool) {
+	return pages.writeOnly
+}
@@ -0,0 +1,289 @@
+package filesys
+
+import (
+	"io"
+	"log"
+	"os"
+)
+
+type WrittenIntervalNode struct {
+	DataOffset int64
+	TempOffset int64
+	Size       int64
+	Next       *WrittenIntervalNode
+}
+
+type WrittenIntervalLinkedList struct {
+	tempFile *os.File
+	Head     *WrittenIntervalNode
+	Tail     *WrittenIntervalNode
+}
+
+type WrittenContinuousIntervals struct {
+	tempFile   *os.File
+	lastOffset int64
+	lists      []*WrittenIntervalLinkedList
+}
+
+func (list *WrittenIntervalLinkedList) Offset() int64 {
+	return list.Head.DataOffset
+}
+func (list *WrittenIntervalLinkedList) Size() int64 {
+	return list.Tail.DataOffset + list.Tail.Size - list.Head.DataOffset
+}
+func (list *WrittenIntervalLinkedList) addNodeToTail(node *WrittenIntervalNode) {
+	// glog.V(4).Infof("add to tail [%d,%d) + [%d,%d) => [%d,%d)", list.Head.Offset, list.Tail.Offset+list.Tail.Size, node.Offset, node.Offset+node.Size, list.Head.Offset, node.Offset+node.Size)
+	if list.Tail.TempOffset+list.Tail.Size == node.TempOffset {
+		// already connected
+		list.Tail.Size += node.Size
+	} else {
+		list.Tail.Next = node
+		list.Tail = node
+	}
+}
+func (list *WrittenIntervalLinkedList) addNodeToHead(node *WrittenIntervalNode) {
+	// glog.V(4).Infof("add to head [%d,%d) + [%d,%d) => [%d,%d)", node.Offset, node.Offset+node.Size, list.Head.Offset, list.Tail.Offset+list.Tail.Size, node.Offset, list.Tail.Offset+list.Tail.Size)
+	node.Next = list.Head
+	list.Head = node
+}
+
+func (list *WrittenIntervalLinkedList) ReadData(buf []byte, start, stop int64) {
+	t := list.Head
+	for {
+
+		nodeStart, nodeStop := max(start, t.DataOffset), min(stop, t.DataOffset+t.Size)
+		if nodeStart < nodeStop {
+			// glog.V(4).Infof("copying start=%d stop=%d t=[%d,%d) => bufSize=%d nodeStart=%d, nodeStop=%d", start, stop, t.DataOffset, t.DataOffset+t.Size, len(buf), nodeStart, nodeStop)
+			list.tempFile.ReadAt(buf[nodeStart-start:nodeStop-start], t.TempOffset + nodeStart - t.DataOffset)
+		}
+
+		if t.Next == nil {
+			break
+		}
+		t = t.Next
+	}
+}
+
+func (c *WrittenContinuousIntervals) TotalSize() (total int64) {
+	for _, list := range c.lists {
+		total += list.Size()
+	}
+	return
+}
+
+func (list *WrittenIntervalLinkedList) subList(start, stop int64) *WrittenIntervalLinkedList {
+	var nodes []*WrittenIntervalNode
+	for t := list.Head; t != nil; t = t.Next {
+		nodeStart, nodeStop := max(start, t.DataOffset), min(stop, t.DataOffset+t.Size)
+		if nodeStart >= nodeStop {
+			// skip non overlapping WrittenIntervalNode
+			continue
+		}
+		nodes = append(nodes, &WrittenIntervalNode{
+			TempOffset: t.TempOffset + nodeStart - t.DataOffset,
+			DataOffset: nodeStart,
+			Size:       nodeStop - nodeStart,
+			Next:       nil,
+		})
+	}
+	for i := 1; i < len(nodes); i++ {
+		nodes[i-1].Next = nodes[i]
+	}
+	return &WrittenIntervalLinkedList{
+		tempFile: list.tempFile,
+		Head:     nodes[0],
+		Tail:     nodes[len(nodes)-1],
+	}
+}
+
+func (c *WrittenContinuousIntervals) debug() {
+	log.Printf("++")
+	for _, l := range c.lists {
+		log.Printf("++++")
+		for t := l.Head; ; t = t.Next {
+			log.Printf("[%d,%d) => [%d,%d) %d", t.DataOffset, t.DataOffset+t.Size, t.TempOffset, t.TempOffset+t.Size, t.Size)
+			if t.Next == nil {
+				break
+			}
+		}
+		log.Printf("----")
+	}
+	log.Printf("--")
+}
+
+func (c *WrittenContinuousIntervals) AddInterval(tempOffset int64, dataSize int, dataOffset int64) {
+
+	interval := &WrittenIntervalNode{DataOffset: dataOffset, TempOffset: tempOffset, Size: int64(dataSize)}
+
+	// append to the tail and return
+	if len(c.lists) == 1 {
+		lastSpan := c.lists[0]
+		if lastSpan.Tail.DataOffset+lastSpan.Tail.Size == dataOffset {
+			lastSpan.addNodeToTail(interval)
+			return
+		}
+	}
+
+	var newLists []*WrittenIntervalLinkedList
+	for _, list := range c.lists {
+		// if list is to the left of new interval, add to the new list
+		if list.Tail.DataOffset+list.Tail.Size <= interval.DataOffset {
+			newLists = append(newLists, list)
+		}
+		// if list is to the right of new interval, add to the new list
+		if interval.DataOffset+interval.Size <= list.Head.DataOffset {
+			newLists = append(newLists, list)
+		}
+		// if new interval overwrite the right part of the list
+		if list.Head.DataOffset < interval.DataOffset && interval.DataOffset < list.Tail.DataOffset+list.Tail.Size {
+			// create a new list of the left part of existing list
+			newLists = append(newLists, list.subList(list.Offset(), interval.DataOffset))
+		}
+		// if new interval overwrite the left part of the list
+		if list.Head.DataOffset < interval.DataOffset+interval.Size && interval.DataOffset+interval.Size < list.Tail.DataOffset+list.Tail.Size {
+			// create a new list of the right part of existing list
+			newLists = append(newLists, list.subList(interval.DataOffset+interval.Size, list.Tail.DataOffset+list.Tail.Size))
+		}
+		// skip anything that is fully overwritten by the new interval
+	}
+
+	c.lists = newLists
+	// add the new interval to the lists, connecting neighbor lists
+	var prevList, nextList *WrittenIntervalLinkedList
+
+	for _, list := range c.lists {
+		if list.Head.DataOffset == interval.DataOffset+interval.Size {
+			nextList = list
+			break
+		}
+	}
+
+	for _, list := range c.lists {
+		if list.Head.DataOffset+list.Size() == dataOffset {
+			list.addNodeToTail(interval)
+			prevList = list
+			break
+		}
+	}
+
+	if prevList != nil && nextList != nil {
+		// glog.V(4).Infof("connecting [%d,%d) + [%d,%d) => [%d,%d)", prevList.Head.Offset, prevList.Tail.Offset+prevList.Tail.Size, nextList.Head.Offset, nextList.Tail.Offset+nextList.Tail.Size, prevList.Head.Offset, nextList.Tail.Offset+nextList.Tail.Size)
+		prevList.Tail.Next = nextList.Head
+		prevList.Tail = nextList.Tail
+		c.removeList(nextList)
+	} else if nextList != nil {
+		// add to head was not done when checking
+		nextList.addNodeToHead(interval)
+	}
+	if prevList == nil && nextList == nil {
+		c.lists = append(c.lists, &WrittenIntervalLinkedList{
+			tempFile: c.tempFile,
+			Head:     interval,
+			Tail:     interval,
+		})
+	}
+
+	return
+}
+
+func (c *WrittenContinuousIntervals) RemoveLargestIntervalLinkedList() *WrittenIntervalLinkedList {
+	var maxSize int64
+	maxIndex := -1
+	for k, list := range c.lists {
+		if maxSize <= list.Size() {
+			maxSize = list.Size()
+			maxIndex = k
+		}
+	}
+	if maxSize <= 0 {
+		return nil
+	}
+
+	t := c.lists[maxIndex]
+	t.tempFile = c.tempFile
+	c.lists = append(c.lists[0:maxIndex], c.lists[maxIndex+1:]...)
+	return t
+
+}
+
+func (c *WrittenContinuousIntervals) removeList(target *WrittenIntervalLinkedList) {
+	index := -1
+	for k, list := range c.lists {
+		if list.Offset() == target.Offset() {
+			index = k
+		}
+	}
+	if index < 0 {
+		return
+	}
+
+	c.lists = append(c.lists[0:index], c.lists[index+1:]...)
+
+}
+
+func (c *WrittenContinuousIntervals) ReadDataAt(data []byte, startOffset int64) (maxStop int64) {
+	for _, list := range c.lists {
+		start := max(startOffset, list.Offset())
+		stop := min(startOffset+int64(len(data)), list.Offset()+list.Size())
+		if start < stop {
+			list.ReadData(data[start-startOffset:], start, stop)
+			maxStop = max(maxStop, stop)
+		}
+	}
+	return
+}
+
+func (l *WrittenIntervalLinkedList) ToReader(start int64, stop int64) io.Reader {
+	// TODO: optimize this to avoid another loop
+	var readers []io.Reader
+	for t := l.Head; ; t = t.Next {
+		startOffset, stopOffset := max(t.DataOffset, start), min(t.DataOffset+t.Size, stop)
+		if startOffset < stopOffset {
+			// glog.V(4).Infof("ToReader read [%d,%d) from [%d,%d) %d", t.DataOffset, t.DataOffset+t.Size, t.TempOffset, t.TempOffset+t.Size, t.Size)
+			readers = append(readers, newFileSectionReader(l.tempFile, startOffset-t.DataOffset+t.TempOffset, startOffset, stopOffset-startOffset))
+		}
+		if t.Next == nil {
+			break
+		}
+	}
+	if len(readers) == 1 {
+		return readers[0]
+	}
+	return io.MultiReader(readers...)
+}
+
+type FileSectionReader struct {
+	file            *os.File
+	tempStartOffset int64
+	Offset          int64
+	dataStart       int64
+	dataStop        int64
+}
+
+var _ = io.Reader(&FileSectionReader{})
+
+func newFileSectionReader(tempfile *os.File, offset int64, dataOffset int64, size int64) *FileSectionReader {
+	return &FileSectionReader{
+		file:            tempfile,
+		tempStartOffset: offset,
+		Offset:          offset,
+		dataStart:       dataOffset,
+		dataStop:        dataOffset + size,
+	}
+}
+
+func (f *FileSectionReader) Read(p []byte) (n int, err error) {
+	remaining := (f.dataStop - f.dataStart) - (f.Offset - f.tempStartOffset)
+	if remaining <= 0 {
+		return 0, io.EOF
+	}
+	dataLen := min(remaining, int64(len(p)))
+	// glog.V(4).Infof("reading [%d,%d) from %v [%d,%d)/[%d,%d) %d", f.Offset-f.tempStartOffset+f.dataStart, f.Offset-f.tempStartOffset+f.dataStart+dataLen, f.file.Name(), f.Offset, f.Offset+dataLen, f.tempStartOffset, f.tempStartOffset+f.dataStop-f.dataStart, f.dataStop-f.dataStart)
+	n, err = f.file.ReadAt(p[:dataLen], f.Offset)
+	if n > 0 {
+		f.Offset += int64(n)
+	} else {
+		err = io.EOF
+	}
+	return
+}
@@ -2,10 +2,8 @@ package filesys

 import (
 	"context"
-	"io"
 	"os"
 	"sort"
-	"sync"
 	"time"

 	"github.com/seaweedfs/fuse"
@@ -20,6 +18,7 @@ import (
 const blockSize = 512

 var _ = fs.Node(&File{})
+var _ = fs.NodeIdentifier(&File{})
 var _ = fs.NodeOpener(&File{})
 var _ = fs.NodeFsyncer(&File{})
 var _ = fs.NodeSetattrer(&File{})
@@ -30,37 +29,37 @@ var _ = fs.NodeListxattrer(&File{})
 var _ = fs.NodeForgetter(&File{})

 type File struct {
-	Name           string
-	dir            *Dir
-	wfs            *WFS
-	entry          *filer_pb.Entry
-	entryLock      sync.RWMutex
-	entryViewCache []filer.VisibleInterval
-	isOpen         int
-	reader         io.ReaderAt
-	dirtyMetadata  bool
+	Name          string
+	dir           *Dir
+	wfs           *WFS
+	entry         *filer_pb.Entry
+	isOpen        int
+	dirtyMetadata bool
+	id            uint64
 }

 func (file *File) fullpath() util.FullPath {
 	return util.NewFullPath(file.dir.FullPath(), file.Name)
 }

+func (file *File) Id() uint64 {
+	return file.id
+}
+
 func (file *File) Attr(ctx context.Context, attr *fuse.Attr) (err error) {

 	glog.V(4).Infof("file Attr %s, open:%v existing:%v", file.fullpath(), file.isOpen, attr)

-	entry := file.getEntry()
-	if file.isOpen <= 0 || entry == nil {
-		if entry, err = file.maybeLoadEntry(ctx); err != nil {
-			return err
-		}
+	entry, err := file.maybeLoadEntry(ctx)
+	if err != nil {
+		return err
 	}

 	if entry == nil {
 		return fuse.ENOENT
 	}

-	// attr.Inode = file.fullpath().AsInode()
+	attr.Inode = file.Id()
 	attr.Valid = time.Second
 	attr.Mode = os.FileMode(entry.Attributes.FileMode)
 	attr.Size = filer.FileSize(entry)
@@ -84,7 +83,7 @@ func (file *File) Attr(ctx context.Context, attr *fuse.Attr) (err error) {

 func (file *File) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {

-	glog.V(4).Infof("file Getxattr %s", file.fullpath())
+	// glog.V(4).Infof("file Getxattr %s", file.fullpath())

 	entry, err := file.maybeLoadEntry(ctx)
 	if err != nil {
@@ -98,7 +97,7 @@ func (file *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.Op

 	glog.V(4).Infof("file %v open %+v", file.fullpath(), req)

-	handle := file.wfs.AcquireHandle(file, req.Uid, req.Gid)
+	handle := file.wfs.AcquireHandle(file, req.Uid, req.Gid, req.Flags&fuse.OpenWriteOnly > 0)

 	resp.Handle = fuse.HandleID(handle.handle)

@@ -110,10 +109,6 @@ func (file *File) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.Op

 func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {

-	if file.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	glog.V(4).Infof("%v file setattr %+v", file.fullpath(), req)

 	entry, err := file.maybeLoadEntry(ctx)
@@ -122,7 +117,7 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
 	}
 	if file.isOpen > 0 {
 		file.wfs.handlesLock.Lock()
-		fileHandle := file.wfs.handles[file.fullpath().AsInode()]
+		fileHandle := file.wfs.handles[file.Id()]
 		file.wfs.handlesLock.Unlock()

 		if fileHandle != nil {
@@ -154,8 +149,6 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f
 				}
 			}
 			entry.Chunks = chunks
-			file.entryViewCache, _ = filer.NonOverlappingVisibleIntervals(file.wfs.LookupFn(), chunks)
-			file.setReader(nil)
 		}
 		entry.Attributes.FileSize = req.Size
 		file.dirtyMetadata = true
@@ -204,10 +197,6 @@ func (file *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *f

 func (file *File) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {

-	if file.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	glog.V(4).Infof("file Setxattr %s: %s", file.fullpath(), req.Name)

 	entry, err := file.maybeLoadEntry(ctx)
@@ -225,10 +214,6 @@ func (file *File) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error

 func (file *File) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {

-	if file.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	glog.V(4).Infof("file Removexattr %s: %s", file.fullpath(), req.Name)

 	entry, err := file.maybeLoadEntry(ctx)
@@ -272,16 +257,20 @@ func (file *File) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
 func (file *File) Forget() {
 	t := util.NewFullPath(file.dir.FullPath(), file.Name)
 	glog.V(4).Infof("Forget file %s", t)
-	file.wfs.fsNodeCache.DeleteFsNode(t)
-	file.wfs.ReleaseHandle(t, 0)
-	file.setReader(nil)
+	file.wfs.ReleaseHandle(t, fuse.HandleID(t.AsInode()))
 }

 func (file *File) maybeLoadEntry(ctx context.Context) (entry *filer_pb.Entry, err error) {
-	entry = file.getEntry()
-	if file.isOpen > 0 {
-		return entry, nil
+
+	file.wfs.handlesLock.Lock()
+	handle, found := file.wfs.handles[file.Id()]
+	file.wfs.handlesLock.Unlock()
+	entry = file.entry
+	if found {
+		// glog.V(4).Infof("maybeLoadEntry found opened file %s/%s", file.dir.FullPath(), file.Name)
+		entry = handle.f.entry
 	}
+
 	if entry != nil {
 		if len(entry.HardLinkId) == 0 {
 			// only always reload hard link
@@ -294,7 +283,7 @@ func (file *File) maybeLoadEntry(ctx context.Context) (entry *filer_pb.Entry, er
 		return entry, err
 	}
 	if entry != nil {
-		file.setEntry(entry)
+		// file.entry = entry
 	} else {
 		glog.Warningf("maybeLoadEntry not found entry %s/%s: %v", file.dir.FullPath(), file.Name, err)
 	}
@@ -336,71 +325,36 @@ func (file *File) addChunks(chunks []*filer_pb.FileChunk) {
 		return lessThan(chunks[i], chunks[j])
 	})

-	// add to entry view cache
-	for _, chunk := range chunks {
-		file.entryViewCache = filer.MergeIntoVisibles(file.entryViewCache, chunk)
-	}
-
-	file.setReader(nil)
-
 	glog.V(4).Infof("%s existing %d chunks adds %d more", file.fullpath(), len(entry.Chunks), len(chunks))

 	entry.Chunks = append(entry.Chunks, newChunks...)
 }

-func (file *File) setReader(reader io.ReaderAt) {
-	r := file.reader
-	if r != nil {
-		if closer, ok := r.(io.Closer); ok {
-			closer.Close()
-		}
-	}
-	file.reader = reader
-}
-
-func (file *File) setEntry(entry *filer_pb.Entry) {
-	file.entryLock.Lock()
-	defer file.entryLock.Unlock()
-	file.entry = entry
-	file.entryViewCache, _ = filer.NonOverlappingVisibleIntervals(file.wfs.LookupFn(), entry.Chunks)
-	file.setReader(nil)
-}
-
-func (file *File) clearEntry() {
-	file.entryLock.Lock()
-	defer file.entryLock.Unlock()
-	file.entry = nil
-	file.entryViewCache = nil
-	file.setReader(nil)
-}
-
 func (file *File) saveEntry(entry *filer_pb.Entry) error {
 	return file.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {

 		file.wfs.mapPbIdFromLocalToFiler(entry)
 		defer file.wfs.mapPbIdFromFilerToLocal(entry)

-		request := &filer_pb.UpdateEntryRequest{
+		request := &filer_pb.CreateEntryRequest{
 			Directory:  file.dir.FullPath(),
 			Entry:      entry,
 			Signatures: []int32{file.wfs.signature},
 		}

 		glog.V(4).Infof("save file entry: %v", request)
-		_, err := client.UpdateEntry(context.Background(), request)
+		_, err := client.CreateEntry(context.Background(), request)
 		if err != nil {
 			glog.Errorf("UpdateEntry file %s/%s: %v", file.dir.FullPath(), file.Name, err)
 			return fuse.EIO
 		}

-		file.wfs.metaCache.UpdateEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
+		file.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))

 		return nil
 	})
 }

 func (file *File) getEntry() *filer_pb.Entry {
-	file.entryLock.RLock()
-	defer file.entryLock.RUnlock()
 	return file.entry
 }
@@ -20,9 +20,11 @@ import (

 type FileHandle struct {
 	// cache file has been written to
-	dirtyPages  *ContinuousDirtyPages
-	contentType string
-	handle      uint64
+	dirtyPages     DirtyPages
+	entryViewCache []filer.VisibleInterval
+	reader         io.ReaderAt
+	contentType    string
+	handle         uint64
 	sync.Mutex

 	f         *File
@@ -30,13 +32,14 @@ type FileHandle struct {
 	NodeId    fuse.NodeID    // file or directory the request is about
 	Uid       uint32         // user ID of process making request
 	Gid       uint32         // group ID of process making request
-
+	writeOnly bool
 }

-func newFileHandle(file *File, uid, gid uint32) *FileHandle {
+func newFileHandle(file *File, uid, gid uint32, writeOnly bool) *FileHandle {
 	fh := &FileHandle{
 		f:          file,
-		dirtyPages: newDirtyPages(file),
+		// dirtyPages: newContinuousDirtyPages(file, writeOnly),
+		dirtyPages: newTempFileDirtyPages(file, writeOnly),
 		Uid:        uid,
 		Gid:        gid,
 	}
@@ -125,20 +128,20 @@ func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, error) {
 	}

 	var chunkResolveErr error
-	if fh.f.entryViewCache == nil {
-		fh.f.entryViewCache, chunkResolveErr = filer.NonOverlappingVisibleIntervals(fh.f.wfs.LookupFn(), entry.Chunks)
+	if fh.entryViewCache == nil {
+		fh.entryViewCache, chunkResolveErr = filer.NonOverlappingVisibleIntervals(fh.f.wfs.LookupFn(), entry.Chunks)
 		if chunkResolveErr != nil {
 			return 0, fmt.Errorf("fail to resolve chunk manifest: %v", chunkResolveErr)
 		}
-		fh.f.setReader(nil)
+		fh.reader = nil
 	}

-	reader := fh.f.reader
+	reader := fh.reader
 	if reader == nil {
-		chunkViews := filer.ViewFromVisibleIntervals(fh.f.entryViewCache, 0, math.MaxInt64)
+		chunkViews := filer.ViewFromVisibleIntervals(fh.entryViewCache, 0, math.MaxInt64)
 		reader = filer.NewChunkReaderAtFromClient(fh.f.wfs.LookupFn(), chunkViews, fh.f.wfs.chunkCache, fileSize)
 	}
-	fh.f.setReader(reader)
+	fh.reader = reader

 	totalRead, err := reader.ReadAt(buff, offset)

@@ -146,7 +149,7 @@ func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, error) {
 		glog.Errorf("file handle read %s: %v", fileFullPath, err)
 	}

-	glog.V(4).Infof("file handle read %s [%d,%d] %d : %v", fileFullPath, offset, offset+int64(totalRead), totalRead, err)
+	// glog.V(4).Infof("file handle read %s [%d,%d] %d : %v", fileFullPath, offset, offset+int64(totalRead), totalRead, err)

 	return int64(totalRead), err
 }
@@ -154,10 +157,6 @@ func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, error) {
 // Write to the file handle
 func (fh *FileHandle) Write(ctx context.Context, req *fuse.WriteRequest, resp *fuse.WriteResponse) error {

-	if fh.f.wfs.option.ReadOnly {
-		return fuse.EPERM
-	}
-
 	fh.Lock()
 	defer fh.Unlock()

@@ -176,7 +175,7 @@ func (fh *FileHandle) Write(ctx context.Context, req *fuse.WriteRequest, resp *f

 	entry.Content = nil
 	entry.Attributes.FileSize = uint64(max(req.Offset+int64(len(data)), int64(entry.Attributes.FileSize)))
-	glog.V(4).Infof("%v write [%d,%d) %d", fh.f.fullpath(), req.Offset, req.Offset+int64(len(req.Data)), len(req.Data))
+	// glog.V(4).Infof("%v write [%d,%d) %d", fh.f.fullpath(), req.Offset, req.Offset+int64(len(req.Data)), len(req.Data))

 	fh.dirtyPages.AddPage(req.Offset, data)

@@ -195,27 +194,27 @@ func (fh *FileHandle) Write(ctx context.Context, req *fuse.WriteRequest, resp *f

 func (fh *FileHandle) Release(ctx context.Context, req *fuse.ReleaseRequest) error {

-	glog.V(4).Infof("Release %v fh %d", fh.f.fullpath(), fh.handle)
+	glog.V(4).Infof("Release %v fh %d open=%d", fh.f.fullpath(), fh.handle, fh.f.isOpen)

 	fh.Lock()
 	defer fh.Unlock()

-	fh.f.entryViewCache = nil
+	fh.f.isOpen--

 	if fh.f.isOpen <= 0 {
+		fh.f.entry = nil
+		fh.entryViewCache = nil
+		fh.reader = nil
+
+		fh.f.wfs.ReleaseHandle(fh.f.fullpath(), fuse.HandleID(fh.handle))
+	}
+
+	if fh.f.isOpen < 0 {
 		glog.V(0).Infof("Release reset %s open count %d => %d", fh.f.Name, fh.f.isOpen, 0)
 		fh.f.isOpen = 0
 		return nil
 	}

-	if fh.f.isOpen == 1 {
-
-		fh.f.isOpen--
-
-		fh.f.wfs.ReleaseHandle(fh.f.fullpath(), fuse.HandleID(fh.handle))
-		fh.f.setReader(nil)
-	}
-
 	return nil
 }

@@ -240,12 +239,8 @@ func (fh *FileHandle) doFlush(ctx context.Context, header fuse.Header) error {
 	// send the data to the OS
 	glog.V(4).Infof("doFlush %s fh %d", fh.f.fullpath(), fh.handle)

-	fh.dirtyPages.saveExistingPagesToStorage()
-
-	fh.dirtyPages.writeWaitGroup.Wait()
-
-	if fh.dirtyPages.lastErr != nil {
-		glog.Errorf("%v doFlush last err: %v", fh.f.fullpath(), fh.dirtyPages.lastErr)
+	if err := fh.dirtyPages.FlushData(); err != nil {
+		glog.Errorf("%v doFlush: %v", fh.f.fullpath(), err)
 		return fuse.EIO
 	}

@@ -273,8 +268,7 @@ func (fh *FileHandle) doFlush(ctx context.Context, header fuse.Header) error {
 			}
 			entry.Attributes.Mtime = time.Now().Unix()
 			entry.Attributes.FileMode = uint32(os.FileMode(entry.Attributes.FileMode) &^ fh.f.wfs.option.Umask)
-			entry.Attributes.Collection = fh.dirtyPages.collection
-			entry.Attributes.Replication = fh.dirtyPages.replication
+			entry.Attributes.Collection, entry.Attributes.Replication = fh.dirtyPages.GetStorageOptions()
 		}

 		request := &filer_pb.CreateEntryRequest{
@@ -291,7 +285,7 @@ func (fh *FileHandle) doFlush(ctx context.Context, header fuse.Header) error {
 		manifestChunks, nonManifestChunks := filer.SeparateManifestChunks(entry.Chunks)

 		chunks, _ := filer.CompactFileChunks(fh.f.wfs.LookupFn(), nonManifestChunks)
-		chunks, manifestErr := filer.MaybeManifestize(fh.f.wfs.saveDataAsChunk(fh.f.fullpath()), chunks)
+		chunks, manifestErr := filer.MaybeManifestize(fh.f.wfs.saveDataAsChunk(fh.f.fullpath(), fh.dirtyPages.GetWriteOnly()), chunks)
 		if manifestErr != nil {
 			// not good, but should be ok
 			glog.V(0).Infof("MaybeManifestize: %v", manifestErr)
@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"os"
-	"strings"
 	"sync"

 	"github.com/chrislusf/seaweedfs/weed/filer"
@@ -31,9 +30,6 @@ func NewMetaCache(dbFolder string, baseDir util.FullPath, uidGidMapper *UidGidMa
 		visitedBoundary: bounded_tree.NewBoundedTree(baseDir),
 		uidGidMapper:    uidGidMapper,
 		invalidateFunc: func(fullpath util.FullPath) {
-			if baseDir != "/" && strings.HasPrefix(string(fullpath), string(baseDir)) {
-				fullpath = fullpath[len(baseDir):]
-			}
 			invalidateFunc(fullpath)
 		},
 	}
@@ -78,7 +74,7 @@ func (mc *MetaCache) AtomicUpdateEntryFromFiler(ctx context.Context, oldPath uti
 				// skip the unnecessary deletion
 				// leave the update to the following InsertEntry operation
 			} else {
-				glog.V(3).Infof("DeleteEntry %s/%s", oldPath, oldPath.Name())
+				glog.V(3).Infof("DeleteEntry %s", oldPath)
 				if err := mc.localStore.DeleteEntry(ctx, oldPath); err != nil {
 					return err
 				}
@@ -17,9 +17,9 @@ func EnsureVisited(mc *MetaCache, client filer_pb.FilerClient, dirPath util.Full
 		glog.V(4).Infof("ReadDirAllEntries %s ...", path)

 		util.Retry("ReadDirAllEntries", func() error {
-			err = filer_pb.ReadDirAllEntries(client, dirPath, "", func(pbEntry *filer_pb.Entry, isLast bool) error {
-				entry := filer.FromPbEntry(string(dirPath), pbEntry)
-				if IsHiddenSystemEntry(string(dirPath), entry.Name()) {
+			err = filer_pb.ReadDirAllEntries(client, path, "", func(pbEntry *filer_pb.Entry, isLast bool) error {
+				entry := filer.FromPbEntry(string(path), pbEntry)
+				if IsHiddenSystemEntry(string(path), entry.Name()) {
 					return nil
 				}
 				if err := mc.doInsertEntry(context.Background(), entry); err != nil {
@@ -35,7 +35,7 @@ func EnsureVisited(mc *MetaCache, client filer_pb.FilerClient, dirPath util.Full
 		})

 		if err != nil {
-			err = fmt.Errorf("list %s: %v", dirPath, err)
+			err = fmt.Errorf("list %s: %v", path, err)
 		}

 		return
@@ -7,8 +7,10 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 	"math"
+	"math/rand"
 	"os"
 	"path"
+	"path/filepath"
 	"sync"
 	"time"

@@ -28,8 +30,9 @@ import (

 type Option struct {
 	MountDirectory     string
-	FilerAddress       string
-	FilerGrpcAddress   string
+	FilerAddresses     []string
+	filerIndex         int
+	FilerGrpcAddresses []string
 	GrpcDialOption     grpc.DialOption
 	FilerMountRootPath string
 	Collection         string
@@ -41,9 +44,7 @@ type Option struct {
 	CacheDir           string
 	CacheSizeMB        int64
 	DataCenter         string
-	EntryCacheTtl      time.Duration
 	Umask              os.FileMode
-	ReadOnly           bool

 	MountUid   uint32
 	MountGid   uint32
@@ -54,6 +55,9 @@ type Option struct {
 	VolumeServerAccess string // how to access volume servers
 	Cipher             bool   // whether encrypt data on volume server
 	UidGidMapper       *meta_cache.UidGidMapper
+
+	uniqueCacheDir         string
+	uniqueCacheTempPageDir string
 }

 var _ = fs.FS(&WFS{})
@@ -97,32 +101,26 @@ func NewSeaweedFileSystem(option *Option) *WFS {
 		},
 		signature: util.RandomInt32(),
 	}
-	cacheUniqueId := util.Md5String([]byte(option.MountDirectory + option.FilerGrpcAddress + option.FilerMountRootPath + util.Version()))[0:8]
-	cacheDir := path.Join(option.CacheDir, cacheUniqueId)
+	wfs.option.filerIndex = rand.Intn(len(option.FilerAddresses))
+	wfs.option.setupUniqueCacheDirectory()
 	if option.CacheSizeMB > 0 {
-		os.MkdirAll(cacheDir, os.FileMode(0777)&^option.Umask)
-		wfs.chunkCache = chunk_cache.NewTieredChunkCache(256, cacheDir, option.CacheSizeMB, 1024*1024)
+		wfs.chunkCache = chunk_cache.NewTieredChunkCache(256, option.getUniqueCacheDir(), option.CacheSizeMB, 1024*1024)
 	}

-	wfs.metaCache = meta_cache.NewMetaCache(path.Join(cacheDir, "meta"), util.FullPath(option.FilerMountRootPath), option.UidGidMapper, func(filePath util.FullPath) {
-		fsNode := wfs.fsNodeCache.GetFsNode(filePath)
-		if fsNode != nil {
-			if file, ok := fsNode.(*File); ok {
-				if err := wfs.Server.InvalidateNodeData(file); err != nil {
-					glog.V(4).Infof("InvalidateNodeData %s : %v", filePath, err)
-				}
-				file.clearEntry()
-			}
+	wfs.metaCache = meta_cache.NewMetaCache(path.Join(option.getUniqueCacheDir(), "meta"), util.FullPath(option.FilerMountRootPath), option.UidGidMapper, func(filePath util.FullPath) {
+
+		fsNode := NodeWithId(filePath.AsInode())
+		if err := wfs.Server.InvalidateNodeData(fsNode); err != nil {
+			glog.V(4).Infof("InvalidateNodeData %s : %v", filePath, err)
 		}
+
 		dir, name := filePath.DirAndName()
-		parent := wfs.root
-		if dir != "/" {
-			parent = wfs.fsNodeCache.GetFsNode(util.FullPath(dir))
+		parent := NodeWithId(util.FullPath(dir).AsInode())
+		if dir == option.FilerMountRootPath {
+			parent = NodeWithId(1)
 		}
-		if parent != nil {
-			if err := wfs.Server.InvalidateEntry(parent, name); err != nil {
-				glog.V(4).Infof("InvalidateEntry %s : %v", filePath, err)
-			}
+		if err := wfs.Server.InvalidateEntry(parent, name); err != nil {
+			glog.V(4).Infof("InvalidateEntry %s : %v", filePath, err)
 		}
 	})
 	startTime := time.Now()
@@ -131,8 +129,7 @@ func NewSeaweedFileSystem(option *Option) *WFS {
 		wfs.metaCache.Shutdown()
 	})

-	entry, _ := filer_pb.GetEntry(wfs, util.FullPath(wfs.option.FilerMountRootPath))
-	wfs.root = &Dir{name: wfs.option.FilerMountRootPath, wfs: wfs, entry: entry}
+	wfs.root = &Dir{name: wfs.option.FilerMountRootPath, wfs: wfs, id: 1}
 	wfs.fsNodeCache = newFsCache(wfs.root)

 	if wfs.option.ConcurrentWriters > 0 {
@@ -146,30 +143,34 @@ func (wfs *WFS) Root() (fs.Node, error) {
 	return wfs.root, nil
 }

-func (wfs *WFS) AcquireHandle(file *File, uid, gid uint32) (fileHandle *FileHandle) {
+func (wfs *WFS) AcquireHandle(file *File, uid, gid uint32, writeOnly bool) (fileHandle *FileHandle) {

 	fullpath := file.fullpath()
 	glog.V(4).Infof("AcquireHandle %s uid=%d gid=%d", fullpath, uid, gid)

-	wfs.handlesLock.Lock()
-	defer wfs.handlesLock.Unlock()
+	inodeId := file.Id()

-	inodeId := file.fullpath().AsInode()
-	if file.isOpen > 0 {
-		existingHandle, found := wfs.handles[inodeId]
-		if found && existingHandle != nil {
-			file.isOpen++
-			return existingHandle
-		}
+	wfs.handlesLock.Lock()
+	existingHandle, found := wfs.handles[inodeId]
+	wfs.handlesLock.Unlock()
+	if found && existingHandle != nil {
+		existingHandle.f.isOpen++
+		existingHandle.dirtyPages.SetWriteOnly(writeOnly)
+		glog.V(4).Infof("Acquired Handle %s open %d", fullpath, existingHandle.f.isOpen)
+		return existingHandle
 	}

-	fileHandle = newFileHandle(file, uid, gid)
-	file.maybeLoadEntry(context.Background())
+	entry, _ := file.maybeLoadEntry(context.Background())
+	file.entry = entry
+	fileHandle = newFileHandle(file, uid, gid, writeOnly)
 	file.isOpen++

+	wfs.handlesLock.Lock()
 	wfs.handles[inodeId] = fileHandle
+	wfs.handlesLock.Unlock()
 	fileHandle.handle = inodeId

+	glog.V(4).Infof("Acquired new Handle %s open %d", fullpath, file.isOpen)
 	return
 }

@@ -177,9 +178,9 @@ func (wfs *WFS) ReleaseHandle(fullpath util.FullPath, handleId fuse.HandleID) {
 	wfs.handlesLock.Lock()
 	defer wfs.handlesLock.Unlock()

-	glog.V(4).Infof("%s ReleaseHandle id %d current handles length %d", fullpath, handleId, len(wfs.handles))
+	glog.V(4).Infof("ReleaseHandle %s id %d current handles length %d", fullpath, handleId, len(wfs.handles))

-	delete(wfs.handles, fullpath.AsInode())
+	delete(wfs.handles, uint64(handleId))

 	return
 }
@@ -263,9 +264,34 @@ func (wfs *WFS) mapPbIdFromLocalToFiler(entry *filer_pb.Entry) {
 func (wfs *WFS) LookupFn() wdclient.LookupFileIdFunctionType {
 	if wfs.option.VolumeServerAccess == "filerProxy" {
 		return func(fileId string) (targetUrls []string, err error) {
-			return []string{"http://" + wfs.option.FilerAddress + "/?proxyChunkId=" + fileId}, nil
+			return []string{"http://" + wfs.getCurrentFiler() + "/?proxyChunkId=" + fileId}, nil
 		}
 	}
 	return filer.LookupFn(wfs)
+}
+func (wfs *WFS) getCurrentFiler() string {
+	return wfs.option.FilerAddresses[wfs.option.filerIndex]
+}

+func (option *Option) setupUniqueCacheDirectory() {
+	cacheUniqueId := util.Md5String([]byte(option.MountDirectory + option.FilerGrpcAddresses[0] + option.FilerMountRootPath + util.Version()))[0:8]
+	option.uniqueCacheDir = path.Join(option.CacheDir, cacheUniqueId)
+	option.uniqueCacheTempPageDir = filepath.Join(option.uniqueCacheDir, "sw")
+	os.MkdirAll(option.uniqueCacheTempPageDir, os.FileMode(0777)&^option.Umask)
+}
+
+func (option *Option) getTempFilePageDir() string {
+	return option.uniqueCacheTempPageDir
+}
+func (option *Option) getUniqueCacheDir() string {
+	return option.uniqueCacheDir
+}
+
+type NodeWithId uint64
+
+func (n NodeWithId) Id() uint64 {
+	return uint64(n)
+}
+func (n NodeWithId) Attr(ctx context.Context, attr *fuse.Attr) error {
+	return nil
 }
@@ -1,6 +1,7 @@
 package filesys

 import (
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"google.golang.org/grpc"

@@ -10,20 +11,36 @@ import (

 var _ = filer_pb.FilerClient(&WFS{})

-func (wfs *WFS) WithFilerClient(fn func(filer_pb.SeaweedFilerClient) error) error {
+func (wfs *WFS) WithFilerClient(fn func(filer_pb.SeaweedFilerClient) error) (err error) {

-	err := util.Retry("filer grpc "+wfs.option.FilerGrpcAddress, func() error {
-		return pb.WithCachedGrpcClient(func(grpcConnection *grpc.ClientConn) error {
-			client := filer_pb.NewSeaweedFilerClient(grpcConnection)
-			return fn(client)
-		}, wfs.option.FilerGrpcAddress, wfs.option.GrpcDialOption)
+	return util.Retry("filer grpc", func() error {
+
+		i := wfs.option.filerIndex
+		n := len(wfs.option.FilerGrpcAddresses)
+		for x := 0; x < n; x++ {
+
+			filerGrpcAddress := wfs.option.FilerGrpcAddresses[i]
+			err = pb.WithCachedGrpcClient(func(grpcConnection *grpc.ClientConn) error {
+				client := filer_pb.NewSeaweedFilerClient(grpcConnection)
+				return fn(client)
+			}, filerGrpcAddress, wfs.option.GrpcDialOption)
+
+			if err != nil {
+				glog.V(0).Infof("WithFilerClient %d %v: %v", x, filerGrpcAddress, err)
+			} else {
+				wfs.option.filerIndex = i
+				return nil
+			}
+
+			i++
+			if i >= n {
+				i = 0
+			}
+
+		}
+		return err
 	})

-	if err == nil {
-		return nil
-	}
-	return err
-
 }

 func (wfs *WFS) AdjustedUrl(location *filer_pb.Location) string {
@@ -13,49 +13,50 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"
 )

-func (wfs *WFS) saveDataAsChunk(fullPath util.FullPath) filer.SaveDataAsChunkFunctionType {
+func (wfs *WFS) saveDataAsChunk(fullPath util.FullPath, writeOnly bool) filer.SaveDataAsChunkFunctionType {

 	return func(reader io.Reader, filename string, offset int64) (chunk *filer_pb.FileChunk, collection, replication string, err error) {
 		var fileId, host string
 		var auth security.EncodedJwt

 		if err := wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+			return util.Retry("assignVolume", func() error {
+				request := &filer_pb.AssignVolumeRequest{
+					Count:       1,
+					Replication: wfs.option.Replication,
+					Collection:  wfs.option.Collection,
+					TtlSec:      wfs.option.TtlSec,
+					DiskType:    string(wfs.option.DiskType),
+					DataCenter:  wfs.option.DataCenter,
+					Path:        string(fullPath),
+				}

-			request := &filer_pb.AssignVolumeRequest{
-				Count:       1,
-				Replication: wfs.option.Replication,
-				Collection:  wfs.option.Collection,
-				TtlSec:      wfs.option.TtlSec,
-				DiskType:    string(wfs.option.DiskType),
-				DataCenter:  wfs.option.DataCenter,
-				Path:        string(fullPath),
-			}
+				resp, err := client.AssignVolume(context.Background(), request)
+				if err != nil {
+					glog.V(0).Infof("assign volume failure %v: %v", request, err)
+					return err
+				}
+				if resp.Error != "" {
+					return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
+				}

-			resp, err := client.AssignVolume(context.Background(), request)
-			if err != nil {
-				glog.V(0).Infof("assign volume failure %v: %v", request, err)
-				return err
-			}
-			if resp.Error != "" {
-				return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
-			}
+				fileId, auth = resp.FileId, security.EncodedJwt(resp.Auth)
+				loc := &filer_pb.Location{
+					Url:       resp.Url,
+					PublicUrl: resp.PublicUrl,
+				}
+				host = wfs.AdjustedUrl(loc)
+				collection, replication = resp.Collection, resp.Replication

-			fileId, auth = resp.FileId, security.EncodedJwt(resp.Auth)
-			loc := &filer_pb.Location{
-				Url:       resp.Url,
-				PublicUrl: resp.PublicUrl,
-			}
-			host = wfs.AdjustedUrl(loc)
-			collection, replication = resp.Collection, resp.Replication
-
-			return nil
+				return nil
+			})
 		}); err != nil {
 			return nil, "", "", fmt.Errorf("filerGrpcAddress assign volume: %v", err)
 		}

 		fileUrl := fmt.Sprintf("http://%s/%s", host, fileId)
 		if wfs.option.VolumeServerAccess == "filerProxy" {
-			fileUrl = fmt.Sprintf("http://%s/?proxyChunkId=%s", wfs.option.FilerAddress, fileId)
+			fileUrl = fmt.Sprintf("http://%s/?proxyChunkId=%s", wfs.getCurrentFiler(), fileId)
 		}
 		uploadResult, err, data := operation.Upload(fileUrl, filename, wfs.option.Cipher, reader, false, "", nil, auth)
 		if err != nil {
@@ -67,7 +68,9 @@ func (wfs *WFS) saveDataAsChunk(fullPath util.FullPath) filer.SaveDataAsChunkFun
 			return nil, "", "", fmt.Errorf("upload result: %v", uploadResult.Error)
 		}

-		wfs.chunkCache.SetChunk(fileId, data)
+		if !writeOnly {
+			wfs.chunkCache.SetChunk(fileId, data)
+		}

 		chunk = uploadResult.ToPbFileChunk(fileId, offset)
 		return chunk, collection, replication, nil
@@ -398,7 +398,7 @@ type flushSyncWriter interface {
 func init() {
 	flag.BoolVar(&logging.toStderr, "logtostderr", false, "log to standard error instead of files")
 	flag.BoolVar(&logging.alsoToStderr, "alsologtostderr", true, "log to standard error as well as files")
-	flag.Var(&logging.verbosity, "v", "log level for V logs")
+	flag.Var(&logging.verbosity, "v", "log levels [0|1|2|3|4], default to 0")
 	flag.Var(&logging.stderrThreshold, "stderrthreshold", "logs at or above this threshold go to stderr")
 	flag.Var(&logging.vmodule, "vmodule", "comma-separated list of pattern=N settings for file-filtered logging")
 	flag.Var(&logging.traceLocation, "log_backtrace_at", "when logging hits line file:N, emit a stack trace")
@@ -50,20 +50,25 @@ func writeErrorResponse(w http.ResponseWriter, errorCode s3err.ErrorCode, reqURL
 	writeResponse(w, apiError.HTTPStatusCode, encodedErrorResponse, mimeXML)
 }

-func writeIamErrorResponse(w http.ResponseWriter, err error, object string, value string) {
+func writeIamErrorResponse(w http.ResponseWriter, err error, object string, value string, msg error) {
 	errCode := err.Error()
 	errorResp := ErrorResponse{}
 	errorResp.Error.Type = "Sender"
 	errorResp.Error.Code = &errCode
+	if msg != nil {
+		errMsg := msg.Error()
+		errorResp.Error.Message = &errMsg
+	}
 	glog.Errorf("Response %+v", err)
 	switch errCode {
 	case iam.ErrCodeNoSuchEntityException:
 		msg := fmt.Sprintf("The %s with name %s cannot be found.", object, value)
 		errorResp.Error.Message = &msg
 		writeResponse(w, http.StatusNotFound, encodeResponse(errorResp), mimeXML)
+	case iam.ErrCodeServiceFailureException:
+		writeResponse(w, http.StatusInternalServerError, encodeResponse(errorResp), mimeXML)
 	default:
 		writeResponse(w, http.StatusInternalServerError, encodeResponse(errorResp), mimeXML)
-
 	}
 }

@@ -11,6 +11,7 @@ import (
 	"math/rand"
 	"net/http"
 	"net/url"
+	"reflect"
 	"strings"
 	"sync"
 	"time"
@@ -19,27 +20,77 @@ import (
 )

 const (
-	charsetUpper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
-	charset      = charsetUpper + "abcdefghijklmnopqrstuvwxyz/"
+	charsetUpper           = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	charset                = charsetUpper + "abcdefghijklmnopqrstuvwxyz/"
+	policyDocumentVersion  = "2012-10-17"
+	StatementActionAdmin   = "*"
+	StatementActionWrite   = "Put*"
+	StatementActionRead    = "Get*"
+	StatementActionList    = "List*"
+	StatementActionTagging = "Tagging*"
 )

 var (
 	seededRand *rand.Rand = rand.New(
 		rand.NewSource(time.Now().UnixNano()))
 	policyDocuments = map[string]*PolicyDocument{}
+	policyLock      = sync.RWMutex{}
 )

+func MapToStatementAction(action string) string {
+	switch action {
+	case StatementActionAdmin:
+		return s3_constants.ACTION_ADMIN
+	case StatementActionWrite:
+		return s3_constants.ACTION_WRITE
+	case StatementActionRead:
+		return s3_constants.ACTION_READ
+	case StatementActionList:
+		return s3_constants.ACTION_LIST
+	case StatementActionTagging:
+		return s3_constants.ACTION_TAGGING
+	default:
+		return ""
+	}
+}
+
+func MapToIdentitiesAction(action string) string {
+	switch action {
+	case s3_constants.ACTION_ADMIN:
+		return StatementActionAdmin
+	case s3_constants.ACTION_WRITE:
+		return StatementActionWrite
+	case s3_constants.ACTION_READ:
+		return StatementActionRead
+	case s3_constants.ACTION_LIST:
+		return StatementActionList
+	case s3_constants.ACTION_TAGGING:
+		return StatementActionTagging
+	default:
+		return ""
+	}
+}
+
 type Statement struct {
 	Effect   string   `json:"Effect"`
 	Action   []string `json:"Action"`
 	Resource []string `json:"Resource"`
 }

+type Policies struct {
+	Policies map[string]PolicyDocument `json:"policies"`
+}
+
 type PolicyDocument struct {
 	Version   string       `json:"Version"`
 	Statement []*Statement `json:"Statement"`
 }

+func (p PolicyDocument) String() string {
+	b, _ := json.Marshal(p)
+	return string(b)
+}
+
 func Hash(s *string) string {
 	h := sha1.New()
 	h.Write([]byte(*s))
@@ -63,7 +114,11 @@ func (iama *IamApiServer) ListUsers(s3cfg *iam_pb.S3ApiConfiguration, values url

 func (iama *IamApiServer) ListAccessKeys(s3cfg *iam_pb.S3ApiConfiguration, values url.Values) (resp ListAccessKeysResponse) {
 	status := iam.StatusTypeActive
+	userName := values.Get("UserName")
 	for _, ident := range s3cfg.Identities {
+		if userName != "" && userName != ident.Name {
+			continue
+		}
 		for _, cred := range ident.Credentials {
 			resp.ListAccessKeysResult.AccessKeyMetadata = append(resp.ListAccessKeysResult.AccessKeyMetadata,
 				&iam.AccessKeyMetadata{UserName: &ident.Name, AccessKeyId: &cred.AccessKey, Status: &status},
@@ -83,7 +138,7 @@ func (iama *IamApiServer) CreateUser(s3cfg *iam_pb.S3ApiConfiguration, values ur
 func (iama *IamApiServer) DeleteUser(s3cfg *iam_pb.S3ApiConfiguration, userName string) (resp DeleteUserResponse, err error) {
 	for i, ident := range s3cfg.Identities {
 		if userName == ident.Name {
-			ident.Credentials = append(ident.Credentials[:i], ident.Credentials[i+1:]...)
+			s3cfg.Identities = append(s3cfg.Identities[:i], s3cfg.Identities[i+1:]...)
 			return resp, nil
 		}
 	}
@@ -119,7 +174,16 @@ func (iama *IamApiServer) CreatePolicy(s3cfg *iam_pb.S3ApiConfiguration, values
 	resp.CreatePolicyResult.Policy.PolicyName = &policyName
 	resp.CreatePolicyResult.Policy.Arn = &arn
 	resp.CreatePolicyResult.Policy.PolicyId = &policyId
-	policyDocuments[policyName] = &policyDocument
+	policies := Policies{}
+	policyLock.Lock()
+	defer policyLock.Unlock()
+	if err = iama.s3ApiConfig.GetPolicies(&policies); err != nil {
+		return resp, err
+	}
+	policies.Policies[policyName] = policyDocument
+	if err = iama.s3ApiConfig.PutPolicies(&policies); err != nil {
+		return resp, err
+	}
 	return resp, nil
 }

@@ -144,19 +208,69 @@ func (iama *IamApiServer) PutUserPolicy(s3cfg *iam_pb.S3ApiConfiguration, values
 	return resp, nil
 }

-func MapAction(action string) string {
-	switch action {
-	case "*":
-		return s3_constants.ACTION_ADMIN
-	case "Put*":
-		return s3_constants.ACTION_WRITE
-	case "Get*":
-		return s3_constants.ACTION_READ
-	case "List*":
-		return s3_constants.ACTION_LIST
-	default:
-		return s3_constants.ACTION_TAGGING
+func (iama *IamApiServer) GetUserPolicy(s3cfg *iam_pb.S3ApiConfiguration, values url.Values) (resp GetUserPolicyResponse, err error) {
+	userName := values.Get("UserName")
+	policyName := values.Get("PolicyName")
+	for _, ident := range s3cfg.Identities {
+		if userName != ident.Name {
+			continue
+		}
+
+		resp.GetUserPolicyResult.UserName = userName
+		resp.GetUserPolicyResult.PolicyName = policyName
+		if len(ident.Actions) == 0 {
+			return resp, fmt.Errorf(iam.ErrCodeNoSuchEntityException)
+		}
+
+		policyDocument := PolicyDocument{Version: policyDocumentVersion}
+		statements := make(map[string][]string)
+		for _, action := range ident.Actions {
+			// parse "Read:EXAMPLE-BUCKET"
+			act := strings.Split(action, ":")
+
+			resource := "*"
+			if len(act) == 2 {
+				resource = fmt.Sprintf("arn:aws:s3:::%s/*", act[1])
+			}
+			statements[resource] = append(statements[resource],
+				fmt.Sprintf("s3:%s", MapToIdentitiesAction(act[0])),
+			)
+		}
+		for resource, actions := range statements {
+			isEqAction := false
+			for i, statement := range policyDocument.Statement {
+				if reflect.DeepEqual(statement.Action, actions) {
+					policyDocument.Statement[i].Resource = append(
+						policyDocument.Statement[i].Resource, resource)
+					isEqAction = true
+					break
+				}
+			}
+			if isEqAction {
+				continue
+			}
+			policyDocumentStatement := Statement{
+				Effect: "Allow",
+				Action: actions,
+			}
+			policyDocumentStatement.Resource = append(policyDocumentStatement.Resource, resource)
+			policyDocument.Statement = append(policyDocument.Statement, &policyDocumentStatement)
+		}
+		resp.GetUserPolicyResult.PolicyDocument = policyDocument.String()
+		return resp, nil
 	}
+	return resp, fmt.Errorf(iam.ErrCodeNoSuchEntityException)
+}
+
+func (iama *IamApiServer) DeleteUserPolicy(s3cfg *iam_pb.S3ApiConfiguration, values url.Values) (resp PutUserPolicyResponse, err error) {
+	userName := values.Get("UserName")
+	for i, ident := range s3cfg.Identities {
+		if ident.Name == userName {
+			s3cfg.Identities = append(s3cfg.Identities[:i], s3cfg.Identities[i+1:]...)
+			return resp, nil
+		}
+	}
+	return resp, fmt.Errorf(iam.ErrCodeNoSuchEntityException)
 }

 func GetActions(policy *PolicyDocument) (actions []string) {
@@ -178,8 +292,9 @@ func GetActions(policy *PolicyDocument) (actions []string) {
 					glog.Infof("not match action: %s", act)
 					continue
 				}
+				statementAction := MapToStatementAction(act[1])
 				if res[5] == "*" {
-					actions = append(actions, MapAction(act[1]))
+					actions = append(actions, statementAction)
 					continue
 				}
 				// Parse my-bucket/shared/*
@@ -188,7 +303,7 @@ func GetActions(policy *PolicyDocument) (actions []string) {
 					glog.Infof("not match bucket: %s", path)
 					continue
 				}
-				actions = append(actions, fmt.Sprintf("%s:%s", MapAction(act[1]), path[0]))
+				actions = append(actions, fmt.Sprintf("%s:%s", statementAction, path[0]))
 			}
 		}
 	}
@@ -277,14 +392,15 @@ func (iama *IamApiServer) DoActions(w http.ResponseWriter, r *http.Request) {
 		userName := values.Get("UserName")
 		response, err = iama.GetUser(s3cfg, userName)
 		if err != nil {
-			writeIamErrorResponse(w, err, "user", userName)
+			writeIamErrorResponse(w, err, "user", userName, nil)
 			return
 		}
+		changed = false
 	case "DeleteUser":
 		userName := values.Get("UserName")
 		response, err = iama.DeleteUser(s3cfg, userName)
 		if err != nil {
-			writeIamErrorResponse(w, err, "user", userName)
+			writeIamErrorResponse(w, err, "user", userName, nil)
 			return
 		}
 	case "CreateAccessKey":
@@ -305,8 +421,23 @@ func (iama *IamApiServer) DoActions(w http.ResponseWriter, r *http.Request) {
 			writeErrorResponse(w, s3err.ErrInvalidRequest, r.URL)
 			return
 		}
+	case "GetUserPolicy":
+		response, err = iama.GetUserPolicy(s3cfg, values)
+		if err != nil {
+			writeIamErrorResponse(w, err, "user", values.Get("UserName"), nil)
+			return
+		}
+		changed = false
+	case "DeleteUserPolicy":
+		if response, err = iama.DeleteUserPolicy(s3cfg, values); err != nil {
+			writeIamErrorResponse(w, err, "user", values.Get("UserName"), nil)
+		}
 	default:
-		writeErrorResponse(w, s3err.ErrNotImplemented, r.URL)
+		errNotImplemented := s3err.GetAPIError(s3err.ErrNotImplemented)
+		errorResponse := ErrorResponse{}
+		errorResponse.Error.Code = &errNotImplemented.Code
+		errorResponse.Error.Message = &errNotImplemented.Description
+		writeResponse(w, errNotImplemented.HTTPStatusCode, encodeResponse(errorResponse), mimeXML)
 		return
 	}
 	if changed {
@@ -314,7 +445,7 @@ func (iama *IamApiServer) DoActions(w http.ResponseWriter, r *http.Request) {
 		err := iama.s3ApiConfig.PutS3ApiConfiguration(s3cfg)
 		s3cfgLock.Unlock()
 		if err != nil {
-			writeErrorResponse(w, s3err.ErrInternalError, r.URL)
+			writeIamErrorResponse(w, fmt.Errorf(iam.ErrCodeServiceFailureException), "", "", err)
 			return
 		}
 	}
@@ -79,6 +79,16 @@ type PutUserPolicyResponse struct {
 	XMLName xml.Name `xml:"https://iam.amazonaws.com/doc/2010-05-08/ PutUserPolicyResponse"`
 }

+type GetUserPolicyResponse struct {
+	CommonResponse
+	XMLName             xml.Name `xml:"https://iam.amazonaws.com/doc/2010-05-08/ GetUserPolicyResponse"`
+	GetUserPolicyResult struct {
+		UserName       string `xml:"UserName"`
+		PolicyName     string `xml:"PolicyName"`
+		PolicyDocument string `xml:"PolicyDocument"`
+	} `xml:"GetUserPolicyResult"`
+}
+
 type ErrorResponse struct {
 	CommonResponse
 	XMLName xml.Name `xml:"https://iam.amazonaws.com/doc/2010-05-08/ ErrorResponse"`
@@ -4,11 +4,14 @@ package iamapi

 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer"
 	"github.com/chrislusf/seaweedfs/weed/pb"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/pb/iam_pb"
+	"github.com/chrislusf/seaweedfs/weed/s3api"
+	. "github.com/chrislusf/seaweedfs/weed/s3api/s3_constants"
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 	"github.com/gorilla/mux"
 	"google.golang.org/grpc"
@@ -19,6 +22,8 @@ import (
 type IamS3ApiConfig interface {
 	GetS3ApiConfiguration(s3cfg *iam_pb.S3ApiConfiguration) (err error)
 	PutS3ApiConfiguration(s3cfg *iam_pb.S3ApiConfiguration) (err error)
+	GetPolicies(policies *Policies) (err error)
+	PutPolicies(policies *Policies) (err error)
 }

 type IamS3ApiConfigure struct {
@@ -36,7 +41,7 @@ type IamServerOption struct {

 type IamApiServer struct {
 	s3ApiConfig IamS3ApiConfig
-	filerclient *filer_pb.SeaweedFilerClient
+	iam         *s3api.IdentityAccessManagement
 }

 var s3ApiConfigure IamS3ApiConfig
@@ -46,9 +51,10 @@ func NewIamApiServer(router *mux.Router, option *IamServerOption) (iamApiServer
 		option:       option,
 		masterClient: wdclient.NewMasterClient(option.GrpcDialOption, pb.AdminShellClient, "", 0, "", strings.Split(option.Masters, ",")),
 	}
-
+	s3Option := s3api.S3ApiServerOption{Filer: option.Filer}
 	iamApiServer = &IamApiServer{
 		s3ApiConfig: s3ApiConfigure,
+		iam:         s3api.NewIdentityAccessManagement(&s3Option),
 	}

 	iamApiServer.registerRouter(router)
@@ -62,7 +68,8 @@ func (iama *IamApiServer) registerRouter(router *mux.Router) {
 	// ListBuckets

 	// apiRouter.Methods("GET").Path("/").HandlerFunc(track(s3a.iam.Auth(s3a.ListBucketsHandler, ACTION_ADMIN), "LIST"))
-	apiRouter.Path("/").Methods("POST").HandlerFunc(iama.DoActions)
+	apiRouter.Methods("POST").Path("/").HandlerFunc(iama.iam.Auth(iama.DoActions, ACTION_ADMIN))
+	//
 	// NotFound
 	apiRouter.NotFoundHandler = http.HandlerFunc(notFoundHandler)
 }
@@ -102,3 +109,41 @@ func (iam IamS3ApiConfigure) PutS3ApiConfiguration(s3cfg *iam_pb.S3ApiConfigurat
 		},
 	)
 }
+
+func (iam IamS3ApiConfigure) GetPolicies(policies *Policies) (err error) {
+	var buf bytes.Buffer
+	err = pb.WithGrpcFilerClient(iam.option.FilerGrpcAddress, iam.option.GrpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
+		if err = filer.ReadEntry(iam.masterClient, client, filer.IamConfigDirecotry, filer.IamPoliciesFile, &buf); err != nil {
+			return err
+		}
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+	if buf.Len() == 0 {
+		policies.Policies = make(map[string]PolicyDocument)
+		return nil
+	}
+	if err := json.Unmarshal(buf.Bytes(), policies); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (iam IamS3ApiConfigure) PutPolicies(policies *Policies) (err error) {
+	var b []byte
+	if b, err = json.Marshal(policies); err != nil {
+		return err
+	}
+	return pb.WithGrpcFilerClient(
+		iam.option.FilerGrpcAddress,
+		iam.option.GrpcDialOption,
+		func(client filer_pb.SeaweedFilerClient) error {
+			if err := filer.SaveInsideFiler(client, filer.IamConfigDirecotry, filer.IamPoliciesFile, b); err != nil {
+				return err
+			}
+			return nil
+		},
+	)
+}
@@ -7,29 +7,43 @@ import (
 	"github.com/aws/aws-sdk-go/service/iam"
 	"github.com/chrislusf/seaweedfs/weed/pb/iam_pb"
 	"github.com/gorilla/mux"
+	"github.com/jinzhu/copier"
 	"github.com/stretchr/testify/assert"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 )

-var S3config iam_pb.S3ApiConfiguration
 var GetS3ApiConfiguration func(s3cfg *iam_pb.S3ApiConfiguration) (err error)
 var PutS3ApiConfiguration func(s3cfg *iam_pb.S3ApiConfiguration) (err error)
+var GetPolicies func(policies *Policies) (err error)
+var PutPolicies func(policies *Policies) (err error)
+
+var s3config = iam_pb.S3ApiConfiguration{}
+var policiesFile = Policies{Policies: make(map[string]PolicyDocument)}
+var ias = IamApiServer{s3ApiConfig: iamS3ApiConfigureMock{}}

 type iamS3ApiConfigureMock struct{}

 func (iam iamS3ApiConfigureMock) GetS3ApiConfiguration(s3cfg *iam_pb.S3ApiConfiguration) (err error) {
-	s3cfg = &S3config
+	_ = copier.Copy(&s3cfg.Identities, &s3config.Identities)
 	return nil
 }

 func (iam iamS3ApiConfigureMock) PutS3ApiConfiguration(s3cfg *iam_pb.S3ApiConfiguration) (err error) {
-	S3config = *s3cfg
+	_ = copier.Copy(&s3config.Identities, &s3cfg.Identities)
 	return nil
 }

-var a = IamApiServer{}
+func (iam iamS3ApiConfigureMock) GetPolicies(policies *Policies) (err error) {
+	_ = copier.Copy(&policies, &policiesFile)
+	return nil
+}
+
+func (iam iamS3ApiConfigureMock) PutPolicies(policies *Policies) (err error) {
+	_ = copier.Copy(&policiesFile, &policies)
+	return nil
+}

 func TestCreateUser(t *testing.T) {
 	userName := aws.String("Test")
@@ -64,17 +78,6 @@ func TestListAccessKeys(t *testing.T) {
 	assert.Equal(t, http.StatusOK, response.Code)
 }

-func TestDeleteUser(t *testing.T) {
-	userName := aws.String("Test")
-	params := &iam.DeleteUserInput{UserName: userName}
-	req, _ := iam.New(session.New()).DeleteUserRequest(params)
-	_ = req.Build()
-	out := DeleteUserResponse{}
-	response, err := executeRequest(req.HTTPRequest, out)
-	assert.Equal(t, nil, err)
-	assert.Equal(t, http.StatusNotFound, response.Code)
-}
-
 func TestGetUser(t *testing.T) {
 	userName := aws.String("Test")
 	params := &iam.GetUserInput{UserName: userName}
@@ -83,7 +86,7 @@ func TestGetUser(t *testing.T) {
 	out := GetUserResponse{}
 	response, err := executeRequest(req.HTTPRequest, out)
 	assert.Equal(t, nil, err)
-	assert.Equal(t, http.StatusNotFound, response.Code)
+	assert.Equal(t, http.StatusOK, response.Code)
 }

 // Todo flat statement
@@ -147,11 +150,32 @@ func TestPutUserPolicy(t *testing.T) {
 	assert.Equal(t, http.StatusOK, response.Code)
 }

+func TestGetUserPolicy(t *testing.T) {
+	userName := aws.String("Test")
+	params := &iam.GetUserPolicyInput{UserName: userName, PolicyName: aws.String("S3-read-only-example-bucket")}
+	req, _ := iam.New(session.New()).GetUserPolicyRequest(params)
+	_ = req.Build()
+	out := GetUserPolicyResponse{}
+	response, err := executeRequest(req.HTTPRequest, out)
+	assert.Equal(t, nil, err)
+	assert.Equal(t, http.StatusOK, response.Code)
+}
+
+func TestDeleteUser(t *testing.T) {
+	userName := aws.String("Test")
+	params := &iam.DeleteUserInput{UserName: userName}
+	req, _ := iam.New(session.New()).DeleteUserRequest(params)
+	_ = req.Build()
+	out := DeleteUserResponse{}
+	response, err := executeRequest(req.HTTPRequest, out)
+	assert.Equal(t, nil, err)
+	assert.Equal(t, http.StatusOK, response.Code)
+}
+
 func executeRequest(req *http.Request, v interface{}) (*httptest.ResponseRecorder, error) {
 	rr := httptest.NewRecorder()
 	apiRouter := mux.NewRouter().SkipClean(true)
-	a.s3ApiConfig = iamS3ApiConfigureMock{}
-	apiRouter.Path("/").Methods("POST").HandlerFunc(a.DoActions)
+	apiRouter.Path("/").Methods("POST").HandlerFunc(ias.DoActions)
 	apiRouter.ServeHTTP(rr, req)
 	return rr, xml.Unmarshal(rr.Body.Bytes(), &v)
 }
@@ -3,6 +3,7 @@ package broker
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/security"
 	"io"

 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -10,7 +11,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/pb"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
-	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/chrislusf/seaweedfs/weed/util"
 )

@@ -53,26 +53,33 @@ func (broker *MessageBroker) assignAndUpload(topicConfig *messaging_pb.TopicConf
 	// assign a volume location
 	if err := broker.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {

-		request := &filer_pb.AssignVolumeRequest{
-			Count:       1,
-			Replication: topicConfig.Replication,
-			Collection:  topicConfig.Collection,
-		}
+		assignErr := util.Retry("assignVolume", func() error {
+			request := &filer_pb.AssignVolumeRequest{
+				Count:       1,
+				Replication: topicConfig.Replication,
+				Collection:  topicConfig.Collection,
+			}

-		resp, err := client.AssignVolume(context.Background(), request)
-		if err != nil {
-			glog.V(0).Infof("assign volume failure %v: %v", request, err)
-			return err
-		}
-		if resp.Error != "" {
-			return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
-		}
+			resp, err := client.AssignVolume(context.Background(), request)
+			if err != nil {
+				glog.V(0).Infof("assign volume failure %v: %v", request, err)
+				return err
+			}
+			if resp.Error != "" {
+				return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
+			}

-		assignResult.Auth = security.EncodedJwt(resp.Auth)
-		assignResult.Fid = resp.FileId
-		assignResult.Url = resp.Url
-		assignResult.PublicUrl = resp.PublicUrl
-		assignResult.Count = uint64(resp.Count)
+			assignResult.Auth = security.EncodedJwt(resp.Auth)
+			assignResult.Fid = resp.FileId
+			assignResult.Url = resp.Url
+			assignResult.PublicUrl = resp.PublicUrl
+			assignResult.Count = uint64(resp.Count)
+
+			return nil
+		})
+		if assignErr != nil {
+			return assignErr
+		}

 		return nil
 	}); err != nil {
@@ -86,6 +86,7 @@ func Assign(masterFn GetMasterFn, grpcDialOption grpc.DialOption, primaryRequest
 			continue
 		}

+		break
 	}

 	return ret, lastError
@@ -11,7 +11,6 @@ import (
 	"net/http"
 	"net/textproto"
 	"path/filepath"
-	"runtime/debug"
 	"strings"
 	"time"

@@ -40,7 +39,7 @@ func (uploadResult *UploadResult) ToPbFileChunk(fileId string, offset int64) *fi
 		Offset:       offset,
 		Size:         uint64(uploadResult.Size),
 		Mtime:        time.Now().UnixNano(),
-		ETag:         uploadResult.ETag,
+		ETag:         uploadResult.ContentMd5,
 		CipherKey:    uploadResult.CipherKey,
 		IsCompressed: uploadResult.Gzip > 0,
 		Fid:          fid,
@@ -235,10 +234,12 @@ func upload_content(uploadUrl string, fillBufferFunction func(w io.Writer) error
 	// print("+")
 	resp, post_err := HttpClient.Do(req)
 	if post_err != nil {
-		if !strings.Contains(post_err.Error(), "connection reset by peer") {
-			glog.Errorf("upload %s %d bytes to %v: %v", filename, originalDataSize, uploadUrl, post_err)
-			debug.PrintStack()
+		if strings.Contains(post_err.Error(), "connection reset by peer") ||
+			strings.Contains(post_err.Error(), "use of closed network connection") {
+			resp, post_err = HttpClient.Do(req)
 		}
+	}
+	if post_err != nil {
 		return nil, fmt.Errorf("upload %s %d bytes to %v: %v", filename, originalDataSize, uploadUrl, post_err)
 	}
 	// print("-")
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	"math/rand"
 	"net/http"
 	"strconv"
 	"strings"
@@ -24,10 +25,15 @@ const (

 var (
 	// cache grpc connections
-	grpcClients     = make(map[string]*grpc.ClientConn)
+	grpcClients     = make(map[string]*versionedGrpcClient)
 	grpcClientsLock sync.Mutex
 )

+type versionedGrpcClient struct {
+	*grpc.ClientConn
+	version int
+}
+
 func init() {
 	http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = 1024
 	http.DefaultTransport.(*http.Transport).MaxIdleConns = 1024
@@ -79,7 +85,7 @@ func GrpcDial(ctx context.Context, address string, opts ...grpc.DialOption) (*gr
 	return grpc.DialContext(ctx, address, options...)
 }

-func getOrCreateConnection(address string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
+func getOrCreateConnection(address string, opts ...grpc.DialOption) (*versionedGrpcClient, error) {

 	grpcClientsLock.Lock()
 	defer grpcClientsLock.Unlock()
@@ -94,23 +100,49 @@ func getOrCreateConnection(address string, opts ...grpc.DialOption) (*grpc.Clien
 		return nil, fmt.Errorf("fail to dial %s: %v", address, err)
 	}

-	grpcClients[address] = grpcConnection
+	vgc := &versionedGrpcClient{
+		grpcConnection,
+		rand.Int(),
+	}
+	grpcClients[address] = vgc

-	return grpcConnection, nil
+	return vgc, nil
 }

 func WithCachedGrpcClient(fn func(*grpc.ClientConn) error, address string, opts ...grpc.DialOption) error {

-	grpcConnection, err := getOrCreateConnection(address, opts...)
+	vgc, err := getOrCreateConnection(address, opts...)
 	if err != nil {
 		return fmt.Errorf("getOrCreateConnection %s: %v", address, err)
 	}
-	return fn(grpcConnection)
+	executionErr := fn(vgc.ClientConn)
+	if executionErr != nil && strings.Contains(executionErr.Error(), "transport") {
+		grpcClientsLock.Lock()
+		if t, ok := grpcClients[address]; ok {
+			if t.version == vgc.version {
+				vgc.Close()
+				delete(grpcClients, address)
+			}
+		}
+		grpcClientsLock.Unlock()
+	}
+
+	return executionErr
 }

 func ParseServerToGrpcAddress(server string) (serverGrpcAddress string, err error) {
 	return ParseServerAddress(server, 10000)
 }
+func ParseServersToGrpcAddresses(servers []string) (serverGrpcAddresses []string, err error) {
+	for _, server := range servers {
+		if serverGrpcAddress, parseErr := ParseServerToGrpcAddress(server); parseErr == nil {
+			serverGrpcAddresses = append(serverGrpcAddresses, serverGrpcAddress)
+		} else {
+			return nil, parseErr
+		}
+	}
+	return
+}

 func ParseServerAddress(server string, deltaPort int) (newServerAddress string, err error) {

@@ -202,3 +234,18 @@ func WithGrpcFilerClient(filerGrpcAddress string, grpcDialOption grpc.DialOption
 	}, filerGrpcAddress, grpcDialOption)

 }
+
+func WithOneOfGrpcFilerClients(filerGrpcAddresses []string, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) (err error) {
+
+	for _, filerGrpcAddress := range filerGrpcAddresses {
+		err = WithCachedGrpcClient(func(grpcConnection *grpc.ClientConn) error {
+			client := filer_pb.NewSeaweedFilerClient(grpcConnection)
+			return fn(client)
+		}, filerGrpcAddress, grpcDialOption)
+		if err == nil {
+			return nil
+		}
+	}
+
+	return err
+}
@@ -288,6 +288,7 @@ message LeaseAdminTokenRequest {
    int64 previous_token = 1;
    int64 previous_lock_time = 2;
    string lock_name = 3;
+    string client_name = 4;
 }
 message LeaseAdminTokenResponse {
    int64 token = 1;
@@ -2468,6 +2468,7 @@ type LeaseAdminTokenRequest struct {
 	PreviousToken    int64  `protobuf:"varint,1,opt,name=previous_token,json=previousToken,proto3" json:"previous_token,omitempty"`
 	PreviousLockTime int64  `protobuf:"varint,2,opt,name=previous_lock_time,json=previousLockTime,proto3" json:"previous_lock_time,omitempty"`
 	LockName         string `protobuf:"bytes,3,opt,name=lock_name,json=lockName,proto3" json:"lock_name,omitempty"`
+	ClientName       string `protobuf:"bytes,4,opt,name=client_name,json=clientName,proto3" json:"client_name,omitempty"`
 }

 func (x *LeaseAdminTokenRequest) Reset() {
@@ -2523,6 +2524,13 @@ func (x *LeaseAdminTokenRequest) GetLockName() string {
 	return ""
 }

+func (x *LeaseAdminTokenRequest) GetClientName() string {
+	if x != nil {
+		return x.ClientName
+	}
+	return ""
+}
+
 type LeaseAdminTokenResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -3268,7 +3276,7 @@ var file_master_proto_rawDesc = []byte{
 	0x73, 0x74, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x52,
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 	0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x65, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x09, 0x52,
-	0x0d, 0x67, 0x72, 0x70, 0x63, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x65, 0x73, 0x22, 0x8a,
+	0x0d, 0x67, 0x72, 0x70, 0x63, 0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x65, 0x73, 0x22, 0xab,
 	0x01, 0x0a, 0x16, 0x4c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b,
 	0x65, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x25, 0x0a, 0x0e, 0x70, 0x72, 0x65,
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@@ -3277,103 +3285,105 @@ var file_master_proto_rawDesc = []byte{
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+	0x75, 0x75, 0x6d, 0x56, 0x6f, 0x6c, 0x75, 0x6d, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73,
+	0x65, 0x22, 0x00, 0x12, 0x6f, 0x0a, 0x16, 0x47, 0x65, 0x74, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72,
+	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x28, 0x2e,
+	0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x47, 0x65, 0x74, 0x4d, 0x61, 0x73,
+	0x74, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e,
+	0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x29, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72,
+	0x5f, 0x70, 0x62, 0x2e, 0x47, 0x65, 0x74, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6f, 0x6e,
+	0x66, 0x69, 0x67, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
+	0x73, 0x65, 0x22, 0x00, 0x12, 0x60, 0x0a, 0x11, 0x4c, 0x69, 0x73, 0x74, 0x4d, 0x61, 0x73, 0x74,
+	0x65, 0x72, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x12, 0x23, 0x2e, 0x6d, 0x61, 0x73, 0x74,
+	0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72,
+	0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x24,
+	0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x4d,
+	0x61, 0x73, 0x74, 0x65, 0x72, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x52, 0x65, 0x73, 0x70,
+	0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x12, 0x5a, 0x0a, 0x0f, 0x4c, 0x65, 0x61, 0x73, 0x65, 0x41,
+	0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x12, 0x21, 0x2e, 0x6d, 0x61, 0x73, 0x74,
+	0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e,
+	0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x22, 0x2e, 0x6d,
+	0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x4c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64,
+	0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65,
+	0x22, 0x00, 0x12, 0x60, 0x0a, 0x11, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d,
+	0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x12, 0x23, 0x2e, 0x6d, 0x61, 0x73, 0x74, 0x65, 0x72,
+	0x5f, 0x70, 0x62, 0x2e, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x41, 0x64, 0x6d, 0x69, 0x6e,
+	0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x24, 0x2e, 0x6d,
+	0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x2e, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65,
+	0x41, 0x64, 0x6d, 0x69, 0x6e, 0x54, 0x6f, 0x6b, 0x65, 0x6e, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
+	0x73, 0x65, 0x22, 0x00, 0x42, 0x32, 0x5a, 0x30, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
+	0x6f, 0x6d, 0x2f, 0x63, 0x68, 0x72, 0x69, 0x73, 0x6c, 0x75, 0x73, 0x66, 0x2f, 0x73, 0x65, 0x61,
+	0x77, 0x65, 0x65, 0x64, 0x66, 0x73, 0x2f, 0x77, 0x65, 0x65, 0x64, 0x2f, 0x70, 0x62, 0x2f, 0x6d,
+	0x61, 0x73, 0x74, 0x65, 0x72, 0x5f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
@@ -71,29 +71,30 @@ func (fs *FilerSink) fetchAndWrite(sourceChunk *filer_pb.FileChunk, path string)
 	var auth security.EncodedJwt

 	if err := fs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
+		return util.Retry("assignVolume", func() error {
+			request := &filer_pb.AssignVolumeRequest{
+				Count:       1,
+				Replication: fs.replication,
+				Collection:  fs.collection,
+				TtlSec:      fs.ttlSec,
+				DataCenter:  fs.dataCenter,
+				DiskType:    fs.diskType,
+				Path:        path,
+			}

-		request := &filer_pb.AssignVolumeRequest{
-			Count:       1,
-			Replication: fs.replication,
-			Collection:  fs.collection,
-			TtlSec:      fs.ttlSec,
-			DataCenter:  fs.dataCenter,
-			DiskType:    fs.diskType,
-			Path:        path,
-		}
+			resp, err := client.AssignVolume(context.Background(), request)
+			if err != nil {
+				glog.V(0).Infof("assign volume failure %v: %v", request, err)
+				return err
+			}
+			if resp.Error != "" {
+				return fmt.Errorf("assign volume failure %v: %v", request, resp.Error)
+			}

-		resp, err := client.AssignVolume(context.Background(), request)
-		if err != nil {
-			glog.V(0).Infof("assign volume failure %v: %v", request, err)
-			return 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)

-		fileId, host, auth = resp.FileId, resp.Url, security.EncodedJwt(resp.Auth)
-
-		return nil
+			return nil
+		})
 	}); err != nil {
 		return "", fmt.Errorf("filerGrpcAddress assign volume: %v", err)
 	}
@@ -3,14 +3,14 @@ package s3api
 import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer"
-	"github.com/chrislusf/seaweedfs/weed/s3api/s3_constants"
-	"io/ioutil"
-	"net/http"
-
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/iam_pb"
 	xhttp "github.com/chrislusf/seaweedfs/weed/s3api/http"
+	"github.com/chrislusf/seaweedfs/weed/s3api/s3_constants"
 	"github.com/chrislusf/seaweedfs/weed/s3api/s3err"
+	"io/ioutil"
+	"net/http"
+	"strings"
 )

 type Action string
@@ -255,11 +255,21 @@ func (identity *Identity) canDo(action Action, bucket string) bool {
 	limitedByBucket := string(action) + ":" + bucket
 	adminLimitedByBucket := s3_constants.ACTION_ADMIN + ":" + bucket
 	for _, a := range identity.Actions {
-		if string(a) == limitedByBucket {
-			return true
-		}
-		if string(a) == adminLimitedByBucket {
-			return true
+		act := string(a)
+		if strings.HasSuffix(act, "*") {
+			if strings.HasPrefix(limitedByBucket, act[:len(act)-1]) {
+				return true
+			}
+			if strings.HasPrefix(adminLimitedByBucket, act[:len(act)-1]) {
+				return true
+			}
+		} else {
+			if act == limitedByBucket {
+				return true
+			}
+			if act == adminLimitedByBucket {
+				return true
+			}
 		}
 	}
 	return false
@@ -24,6 +24,7 @@ import (
 	"crypto/subtle"
 	"encoding/hex"
 	"github.com/chrislusf/seaweedfs/weed/s3api/s3err"
+	"io/ioutil"
 	"net/http"
 	"net/url"
 	"regexp"
@@ -132,6 +133,17 @@ func (iam *IdentityAccessManagement) doesSignatureMatch(hashedPayload string, r
 	// Query string.
 	queryStr := req.URL.Query().Encode()

+	// Get hashed Payload
+	if signV4Values.Credential.scope.service != "s3" && hashedPayload == emptySHA256 && r.Body != nil {
+		buf, _ := ioutil.ReadAll(r.Body)
+		r.Body = ioutil.NopCloser(bytes.NewBuffer(buf))
+		b, _ := ioutil.ReadAll(bytes.NewBuffer(buf))
+		if len(b) != 0 {
+			bodyHash := sha256.Sum256(b)
+			hashedPayload = hex.EncodeToString(bodyHash[:])
+		}
+	}
+
 	// Get canonical request.
 	canonicalRequest := getCanonicalRequest(extractedSignedHeaders, hashedPayload, queryStr, req.URL.Path, req.Method)

@@ -139,7 +151,10 @@ func (iam *IdentityAccessManagement) doesSignatureMatch(hashedPayload string, r
 	stringToSign := getStringToSign(canonicalRequest, t, signV4Values.Credential.getScope())

 	// Get hmac signing key.
-	signingKey := getSigningKey(cred.SecretKey, signV4Values.Credential.scope.date, signV4Values.Credential.scope.region)
+	signingKey := getSigningKey(cred.SecretKey,
+		signV4Values.Credential.scope.date,
+		signV4Values.Credential.scope.region,
+		signV4Values.Credential.scope.service)

 	// Calculate signature.
 	newSignature := getSignature(signingKey, stringToSign)
@@ -310,7 +325,7 @@ func (iam *IdentityAccessManagement) doesPolicySignatureV4Match(formValues http.
 	}

 	// Get signing key.
-	signingKey := getSigningKey(cred.SecretKey, credHeader.scope.date, credHeader.scope.region)
+	signingKey := getSigningKey(cred.SecretKey, credHeader.scope.date, credHeader.scope.region, credHeader.scope.service)

 	// Get signature.
 	newSignature := getSignature(signingKey, formValues.Get("Policy"))
@@ -427,7 +442,10 @@ func (iam *IdentityAccessManagement) doesPresignedSignatureMatch(hashedPayload s
 	presignedStringToSign := getStringToSign(presignedCanonicalReq, t, pSignValues.Credential.getScope())

 	// Get hmac presigned signing key.
-	presignedSigningKey := getSigningKey(cred.SecretKey, pSignValues.Credential.scope.date, pSignValues.Credential.scope.region)
+	presignedSigningKey := getSigningKey(cred.SecretKey,
+		pSignValues.Credential.scope.date,
+		pSignValues.Credential.scope.region,
+		pSignValues.Credential.scope.service)

 	// Get new signature.
 	newSignature := getSignature(presignedSigningKey, presignedStringToSign)
@@ -655,11 +673,11 @@ func sumHMAC(key []byte, data []byte) []byte {
 }

 // getSigningKey hmac seed to calculate final signature.
-func getSigningKey(secretKey string, t time.Time, region string) []byte {
+func getSigningKey(secretKey string, t time.Time, region string, service string) []byte {
 	date := sumHMAC([]byte("AWS4"+secretKey), []byte(t.Format(yyyymmdd)))
 	regionBytes := sumHMAC(date, []byte(region))
-	service := sumHMAC(regionBytes, []byte("s3"))
-	signingKey := sumHMAC(service, []byte("aws4_request"))
+	serviceBytes := sumHMAC(regionBytes, []byte(service))
+	signingKey := sumHMAC(serviceBytes, []byte("aws4_request"))
 	return signingKey
 }

@@ -370,7 +370,7 @@ func preSignV4(req *http.Request, accessKeyID, secretAccessKey string, expires i
 	queryStr := strings.Replace(query.Encode(), "+", "%20", -1)
 	canonicalRequest := getCanonicalRequest(extractedSignedHeaders, unsignedPayload, queryStr, req.URL.Path, req.Method)
 	stringToSign := getStringToSign(canonicalRequest, date, scope)
-	signingKey := getSigningKey(secretAccessKey, date, region)
+	signingKey := getSigningKey(secretAccessKey, date, region, "s3")
 	signature := getSignature(signingKey, stringToSign)

 	req.URL.RawQuery = query.Encode()
@@ -45,7 +45,7 @@ func getChunkSignature(secretKey string, seedSignature string, region string, da
 		hashedChunk

 	// Get hmac signing key.
-	signingKey := getSigningKey(secretKey, date, region)
+	signingKey := getSigningKey(secretKey, date, region, "s3")

 	// Calculate signature.
 	newSignature := getSignature(signingKey, stringToSign)
@@ -117,7 +117,7 @@ func (iam *IdentityAccessManagement) calculateSeedSignature(r *http.Request) (cr
 	stringToSign := getStringToSign(canonicalRequest, date, signV4Values.Credential.getScope())

 	// Get hmac signing key.
-	signingKey := getSigningKey(cred.SecretKey, signV4Values.Credential.scope.date, region)
+	signingKey := getSigningKey(cred.SecretKey, signV4Values.Credential.scope.date, region, "s3")

 	// Calculate signature.
 	newSignature := getSignature(signingKey, stringToSign)
@@ -62,6 +62,12 @@ func (s3a *S3ApiServer) PutObjectHandler(w http.ResponseWriter, r *http.Request)
 			writeErrorResponse(w, s3ErrCode, r.URL)
 			return
 		}
+	} else {
+		rAuthType := getRequestAuthType(r)
+		if authTypeAnonymous != rAuthType {
+			writeErrorResponse(w, s3err.ErrAuthNotSetup, r.URL)
+			return
+		}
 	}
 	defer dataReader.Close()

@@ -311,7 +317,7 @@ func (s3a *S3ApiServer) proxyToFiler(w http.ResponseWriter, r *http.Request, des
 	}
 	defer util.CloseResponse(resp)

-	if resp.ContentLength == -1 || resp.StatusCode == 404 {
+	if (resp.ContentLength == -1 || resp.StatusCode == 404) && resp.StatusCode != 304 {
 		if r.Method != "DELETE" {
 			writeErrorResponse(w, s3err.ErrNoSuchKey, r.URL)
 			return
@@ -326,11 +332,7 @@ func passThroughResponse(proxyResponse *http.Response, w http.ResponseWriter) {
 	for k, v := range proxyResponse.Header {
 		w.Header()[k] = v
 	}
-	if proxyResponse.Header.Get("Content-Range") != "" && proxyResponse.StatusCode == 200 {
-		w.WriteHeader(http.StatusPartialContent)
-	} else {
-		w.WriteHeader(proxyResponse.StatusCode)
-	}
+	w.WriteHeader(proxyResponse.StatusCode)
 	io.Copy(w, proxyResponse.Body)
 }

@@ -63,6 +63,14 @@ func (s3a *S3ApiServer) ListObjectsV2Handler(w http.ResponseWriter, r *http.Requ
 		writeErrorResponse(w, s3err.ErrInternalError, r.URL)
 		return
 	}
+
+	if len(response.Contents) == 0 {
+		if exists, existErr := s3a.exists(s3a.option.BucketsPath, bucket, true); existErr == nil && !exists {
+			writeErrorResponse(w, s3err.ErrNoSuchBucket, r.URL)
+			return
+		}
+	}
+
 	responseV2 := &ListBucketResultV2{
 		XMLName:               response.XMLName,
 		Name:                  response.Name,
@@ -106,6 +114,13 @@ func (s3a *S3ApiServer) ListObjectsV1Handler(w http.ResponseWriter, r *http.Requ
 		return
 	}

+	if len(response.Contents) == 0 {
+		if exists, existErr := s3a.exists(s3a.option.BucketsPath, bucket, true); existErr == nil && !exists {
+			writeErrorResponse(w, s3err.ErrNoSuchBucket, r.URL)
+			return
+		}
+	}
+
 	writeSuccessResponseXML(w, encodeResponse(response))
 }

@@ -91,6 +91,7 @@ const (
 	ErrRequestNotReadyYet
 	ErrMissingDateHeader
 	ErrInvalidRequest
+	ErrAuthNotSetup
 	ErrNotImplemented

 	ErrExistingObjectIsDirectory
@@ -116,7 +117,7 @@ var errorCodeResponse = map[ErrorCode]APIError{
 	},
 	ErrBucketAlreadyExists: {
 		Code:           "BucketAlreadyExists",
-		Description:    "The requested bucket name is not available. The bucket namespace is shared by all users of the system. Please select a different name and try again.",
+		Description:    "The requested bucket name is not available. The bucket name can not be an existing collection, and the bucket namespace is shared by all users of the system. Please select a different name and try again.",
 		HTTPStatusCode: http.StatusConflict,
 	},
 	ErrBucketAlreadyOwnedByYou: {
@@ -341,6 +342,11 @@ var errorCodeResponse = map[ErrorCode]APIError{
 		Description:    "Invalid Request",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrAuthNotSetup : {
+		Code:           "InvalidRequest",
+		Description:    "Signed request requires setting up SeaweedFS S3 authentication",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrNotImplemented: {
 		Code:           "NotImplemented",
 		Description:    "A header you provided implies functionality that is not implemented",
@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 	"mime/multipart"
 	"net/http"
 	"path/filepath"
@@ -21,19 +22,14 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"

 	"github.com/gorilla/mux"
-	statik "github.com/rakyll/statik/fs"
-
-	_ "github.com/chrislusf/seaweedfs/weed/statik"
 )

 var serverStats *stats.ServerStats
 var startTime = time.Now()
-var statikFS http.FileSystem

 func init() {
 	serverStats = stats.NewServerStats()
 	go serverStats.Start()
-	statikFS, _ = statik.New()
 }

 func writeJson(w http.ResponseWriter, r *http.Request, httpStatus int, obj interface{}) (err error) {
@@ -212,14 +208,16 @@ func statsMemoryHandler(w http.ResponseWriter, r *http.Request) {
 	writeJsonQuiet(w, r, http.StatusOK, m)
 }

+var StaticFS fs.FS
+
 func handleStaticResources(defaultMux *http.ServeMux) {
-	defaultMux.Handle("/favicon.ico", http.FileServer(statikFS))
-	defaultMux.Handle("/seaweedfsstatic/", http.StripPrefix("/seaweedfsstatic", http.FileServer(statikFS)))
+	defaultMux.Handle("/favicon.ico", http.FileServer(http.FS(StaticFS)))
+	defaultMux.Handle("/seaweedfsstatic/", http.StripPrefix("/seaweedfsstatic", http.FileServer(http.FS(StaticFS))))
 }

 func handleStaticResources2(r *mux.Router) {
-	r.Handle("/favicon.ico", http.FileServer(statikFS))
-	r.PathPrefix("/seaweedfsstatic/").Handler(http.StripPrefix("/seaweedfsstatic", http.FileServer(statikFS)))
+	r.Handle("/favicon.ico", http.FileServer(http.FS(StaticFS)))
+	r.PathPrefix("/seaweedfsstatic/").Handler(http.StripPrefix("/seaweedfsstatic", http.FileServer(http.FS(StaticFS))))
 }

 func adjustHeaderContentDisposition(w http.ResponseWriter, r *http.Request, filename string) {
@@ -234,12 +232,12 @@ func adjustHeaderContentDisposition(w http.ResponseWriter, r *http.Request, file
 	}
 }

-func processRangeRequest(r *http.Request, w http.ResponseWriter, totalSize int64, mimeType string, writeFn func(writer io.Writer, offset int64, size int64) error) {
+func processRangeRequest(r *http.Request, w http.ResponseWriter, totalSize int64, mimeType string, writeFn func(writer io.Writer, offset int64, size int64, httpStatusCode int) error) {
 	rangeReq := r.Header.Get("Range")

 	if rangeReq == "" {
 		w.Header().Set("Content-Length", strconv.FormatInt(totalSize, 10))
-		if err := writeFn(w, 0, totalSize); err != nil {
+		if err := writeFn(w, 0, totalSize, 0); err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
@@ -279,7 +277,7 @@ func processRangeRequest(r *http.Request, w http.ResponseWriter, totalSize int64
 		w.Header().Set("Content-Length", strconv.FormatInt(ra.length, 10))
 		w.Header().Set("Content-Range", ra.contentRange(totalSize))

-		err = writeFn(w, ra.start, ra.length)
+		err = writeFn(w, ra.start, ra.length, http.StatusPartialContent)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
@@ -307,7 +305,7 @@ func processRangeRequest(r *http.Request, w http.ResponseWriter, totalSize int64
 				pw.CloseWithError(e)
 				return
 			}
-			if e = writeFn(part, ra.start, ra.length); e != nil {
+			if e = writeFn(part, ra.start, ra.length, 0); e != nil {
 				pw.CloseWithError(e)
 				return
 			}
@@ -63,7 +63,7 @@ func (fs *FilerServer) ListEntries(req *filer_pb.ListEntriesRequest, stream file
 	var listErr error
 	for limit > 0 {
 		var hasEntries bool
-		lastFileName, listErr = fs.filer.StreamListDirectoryEntries(stream.Context(), util.FullPath(req.Directory), lastFileName, includeLastFile, int64(paginationLimit), req.Prefix, "", func(entry *filer.Entry) bool {
+		lastFileName, listErr = fs.filer.StreamListDirectoryEntries(stream.Context(), util.FullPath(req.Directory), lastFileName, includeLastFile, int64(paginationLimit), req.Prefix, "", "", func(entry *filer.Entry) bool {
 			hasEntries = true
 			if err = stream.Send(&filer_pb.ListEntriesResponse{
 				Entry: &filer_pb.Entry{
@@ -74,7 +74,7 @@ func (fs *FilerServer) moveFolderSubEntries(ctx context.Context, oldParent util.
 	includeLastFile := false
 	for {

-		entries, hasMore, err := fs.filer.ListDirectoryEntries(ctx, currentDirPath, lastFileName, includeLastFile, 1024, "", "")
+		entries, hasMore, err := fs.filer.ListDirectoryEntries(ctx, currentDirPath, lastFileName, includeLastFile, 1024, "", "", "")
 		if err != nil {
 			return err
 		}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Chris Lu	42fb03a66e	2.49	2021-05-23 00:51:47 -07:00
Chris Lu	2d85ffe7c5	java 1.6.6	2021-05-23 00:51:02 -07:00
Chris Lu	a852f8a3f5	some code to stress test the meta data events	2021-05-22 18:03:13 -07:00
Chris Lu	3d3fa43542	filer: re-create grpc connections if having transport error fix https://github.com/chrislusf/seaweedfs/issues/2070	2021-05-22 17:46:53 -07:00
Chris Lu	2d0a0733ec	filer: bootstrap from peer filer fix https://github.com/chrislusf/seaweedfs/issues/1861	2021-05-22 03:17:02 -07:00
Chris Lu	2586621362	minor	2021-05-22 01:02:31 -07:00
Chris Lu	e5a2bf1287	s3: deprecating filer.options.buckets_fsync	2021-05-22 00:24:23 -07:00
Chris Lu	431684798b	s3: add errors if requests are signed by no authentication is setup fix https://github.com/chrislusf/seaweedfs/issues/2075	2021-05-21 14:08:47 -07:00
Chris Lu	2f136a04a1	organize a bit better for temp file directory	2021-05-21 13:02:18 -07:00
Chris Lu	e8b7d4ad64	simplify a bit	2021-05-21 02:10:44 -07:00
Chris Lu	0b00edfc3b	waits in case master lost connection	2021-05-21 02:09:22 -07:00
Chris Lu	085a61cb8f	minor	2021-05-21 01:50:20 -07:00
Chris Lu	4d0b894d37	Java Client: throw exception when assign fails	2021-05-21 01:49:25 -07:00
Chris Lu	2d237f7b50	Java client: fix passing replication value	2021-05-21 01:43:25 -07:00
Chris Lu	f37a4cbd0f	randomize initial filer	2021-05-21 01:41:34 -07:00
Chris Lu	5d77840cff	adjust help message	2021-05-21 01:38:57 -07:00
Chris Lu	dc1309f084	FUSE mount: support multiple filers fix https://github.com/chrislusf/seaweedfs/issues/2015 fix https://github.com/chrislusf/seaweedfs/issues/1531	2021-05-21 01:28:00 -07:00
Chris Lu	30c67e3652	minor	2021-05-19 23:59:39 -07:00
Chris Lu	87a32bfef4	avoid possible nil when node is disconnected from its parent fix https://github.com/chrislusf/seaweedfs/issues/2073	2021-05-19 10:02:01 -07:00
Chris Lu	6c1c72b1f4	java client 1.6.5	2021-05-17 23:18:37 -07:00
Chris LuandGitHub	33fe0b96e6	Update README.md	2021-05-17 02:10:20 -07:00
Chris LuandGitHub	aeeeee1e26	Update README.md	2021-05-17 01:22:01 -07:00
Chris Lu	1aa7e99a89	skip file not found error when deleting	2021-05-15 09:37:39 -07:00
Chris Lu	45a762223a	2.48	2021-05-14 10:26:42 -07:00
Chris Lu	789465d99e	set renamed item to new directory related to https://github.com/chrislusf/seaweedfs/issues/2064	2021-05-13 22:52:19 -07:00
Chris Lu	83c037e093	fix logs	2021-05-13 22:41:19 -07:00
Chris Lu	5a29d284fa	ensure proper directory name a fix related to https://github.com/chrislusf/seaweedfs/issues/2064	2021-05-13 10:18:35 -07:00
Chris Lu	e3f47ddb76	debug	2021-05-13 00:32:46 -07:00
Chris Lu	3ff307e842	reduce logs	2021-05-13 00:32:37 -07:00
Chris Lu	a48ebd7c73	mount: read file when file is still being written a possible fix for https://github.com/chrislusf/seaweedfs/issues/2065	2021-05-13 00:32:23 -07:00
Chris Lu	26a55bbb5c	Adjust error message when bucket name conflicts with existing collections fix https://github.com/chrislusf/seaweedfs/issues/2069	2021-05-12 22:30:39 -07:00
Chris Lu	ceb620a30a	directory rename: change directory name after renaming fix https://github.com/chrislusf/seaweedfs/issues/2068	2021-05-12 22:04:47 -07:00
Chris Lu	b430d1b6ee	filer.copy: "check.size" before copying files fix https://github.com/chrislusf/seaweedfs/issues/2067	2021-05-12 21:45:39 -07:00
Chris LuandGitHub	534c4202a5	Update README.md	2021-05-11 23:44:27 -07:00
Chris LuandGitHub	516efdddc7	Merge pull request #2063 from Suika/gh-container-build Gh container build	2021-05-11 22:17:33 -07:00
Chris Lu	0c16e00ef9	raft v1.0.7	2021-05-11 22:07:19 -07:00
Chris Lu	fc5a8af09e	fix possible nil	2021-05-11 22:06:41 -07:00
suika	285a4667c2	Enable login/push, build latest/dev on master branch Login to Docker Hub and Github Container Repo is enabled, need the secrets to be set. Remove ...image.description because it wil be automatically set.	2021-05-12 04:38:36 +02:00
suika	727287a755	Fix build context for latest tag	2021-05-12 04:31:13 +02:00
suika	19895d5f72	Container build actions initial brainless copy of docker hub config to github actions	2021-05-12 04:26:31 +02:00
Chris Lu	0f7b43af99	2.47	2021-05-11 10:12:15 -07:00
Chris Lu	d2d36a3f9d	master: avoid creating too many volumes fix https://github.com/chrislusf/seaweedfs/issues/2062	2021-05-11 10:05:31 -07:00
Chris Lu	4596e64710	2.46	2021-05-10 21:58:37 -07:00
Chris Lu	e55aa41690	Merge branch 'upload_via_temp_file'	2021-05-10 21:48:18 -07:00
Chris Lu	1737af480a	adjust logs	2021-05-10 21:47:51 -07:00
Chris Lu	d06ecc2649	working properly	2021-05-10 21:47:07 -07:00
Chris Lu	fe2edd4b50	2.45	2021-05-10 13:53:03 -07:00
Chris Lu	55d547afec	switch back to in memory uploading for now	2021-05-10 13:50:10 -07:00
Chris Lu	9a6aa00e9d	avoid nil locations fix https://github.com/chrislusf/seaweedfs/issues/2059	2021-05-10 02:39:52 -07:00
Chris Lu	da0a4e775b	Revert "Revert "Merge pull request #2027 from bingoohuang/master"" This reverts commit `d74cdf0115`.	2021-05-10 00:13:55 -07:00
Chris Lu	40945a60cf	use go 1.16.4 to build docker image	2021-05-10 00:13:36 -07:00
Chris Lu	aa6949ef25	2.44	2021-05-09 23:28:48 -07:00
Chris Lu	ba77833343	EOF handling	2021-05-09 23:04:24 -07:00
Chris Lu	f4cf30b497	mount: write to tmp file before uploading	2021-05-09 22:56:10 -07:00
Chris Lu	280e7cf289	mount: in case the set attribute is called before persisting the file	2021-05-09 22:55:30 -07:00
Chris Lu	74052064b6	add one missing optimization	2021-05-09 17:25:42 -07:00
Chris Lu	59ace54925	refactor	2021-05-09 17:22:30 -07:00
Chris Lu	50be19d23e	refactor	2021-05-09 15:33:01 -07:00
Chris Lu	55e060cf61	refactor	2021-05-09 15:28:54 -07:00
Chris Lu	735e65be17	refactor	2021-05-09 15:22:38 -07:00
Chris Lu	93e84a12f2	refactor	2021-05-09 15:15:18 -07:00
Chris Lu	3942e3b2ef	a better fix	2021-05-09 01:42:19 -07:00
Chris Lu	957e1a1bc1	fuse: important: if filer -filer.path is not root, directory listing will fail	2021-05-09 00:32:21 -07:00
Chris Lu	7ca75347ec	minor	2021-05-07 21:56:45 -07:00
Chris Lu	8f8738867f	add retry to assign volume fix https://github.com/chrislusf/seaweedfs/issues/2056	2021-05-07 07:29:26 -07:00
Chris Lu	007401f3a0	remove duplicated code	2021-05-07 07:14:24 -07:00
Chris Lu	930581cedc	fuse: avoid nil when invalidating entry fix https://github.com/chrislusf/seaweedfs/issues/2055	2021-05-07 07:09:04 -07:00
Chris LuandGitHub	84397b814a	Merge pull request #2052 from jbarotin/master Add exists() to java client	2021-05-07 06:09:03 -07:00
Jérôme Barotin	89b2ef8d05	handle "/" in exist	2021-05-07 10:05:48 +02:00
Jérôme Barotin	a46be0ca56	Add exists() to java client	2021-05-07 09:33:03 +02:00
Chris Lu	9b5f54e367	java: filer client add modified time to touch() function	2021-05-06 11:38:23 -07:00
Chris Lu	28d58bac62	another simple example	2021-05-06 11:25:36 -07:00
Chris LuandGitHub	48601bce6c	Merge pull request #2050 from jbarotin/master make SeaweedInputStream throw FileNotFoundException	2021-05-06 10:35:44 -07:00
Jérôme Barotin	9c97b17291	make SeaweedInputStream throw FileNotFoundException	2021-05-06 19:21:23 +02:00
Chris LuandGitHub	aaad4b578b	Merge pull request #2049 from qieqieplus/async-assign ahead of time volume assignment	2021-05-06 10:00:25 -07:00
qieqieplus	c4d32f6937	ahead of time volume assignment	2021-05-06 18:55:44 +08:00
Chris Lu	55a8f57381	go fmt	2021-05-06 03:37:51 -07:00
Chris Lu	5753749c90	remove verbose logs	2021-05-06 03:34:34 -07:00
Chris Lu	38f411219a	mount: skip local chunk cache if opened write only	2021-05-06 03:31:40 -07:00
Chris Lu	c899bdf063	a little optimization	2021-05-06 03:03:00 -07:00
Chris Lu	3eb336e0b0	report error only for the first multipart upload the glog.Errorf would always print for s3 multipart uploads	2021-05-06 01:57:54 -07:00
Chris Lu	76c48ffe27	optional parallel copy ec shards fix https://github.com/chrislusf/seaweedfs/issues/2048	2021-05-06 01:53:35 -07:00
Chris Lu	ac71117ee6	revert PR #1903 avoid http error: superfluous response.WriteHeader	2021-05-05 15:11:39 -07:00
Chris LuandGitHub	24efa31e49	Merge pull request #2045 from qieqieplus/fix-vacuum-commit	2021-05-05 07:41:38 -07:00
qieqieplus	ac26080bd2	fix concurrent vacuum & delete panic	2021-05-05 17:54:50 +08:00
Chris Lu	e24ba2aadc	filer: delete specific tags fix https://github.com/chrislusf/seaweedfs/issues/2041	2021-05-02 21:53:43 -07:00
Chris Lu	e87e6ef33c	s3: return 404 if bucket does not exist fix https://github.com/chrislusf/seaweedfs/issues/2039	2021-05-02 21:30:37 -07:00
Chris Lu	a4bb37a5fe	add debug info	2021-05-01 16:10:26 -07:00
Chris Lu	2e56407c6b	fix visited checking	2021-05-01 16:09:29 -07:00
Chris Lu	c48ef78670	2.43	2021-05-01 00:39:04 -07:00
Chris Lu	53b300edd8	add git version for local builds	2021-05-01 00:20:11 -07:00
Chris Lu	f51bf61a16	remove wrong parameter	2021-04-30 22:51:30 -07:00
Chris Lu	3a86d4dbfd	mount: fix directory invalidation fix https://github.com/chrislusf/seaweedfs/issues/2038	2021-04-30 22:51:06 -07:00
Chris Lu	d74cdf0115	Revert "Merge pull request #2027 from bingoohuang/master" Need to revert because docker image build failed. The docker apk package only has go 1.15.	2021-04-30 03:36:15 -07:00
Chris Lu	84312e6799	2.42	2021-04-30 03:14:07 -07:00
Chris Lu	8db58450a0	Update ISSUE_TEMPLATE.md	2021-04-30 01:08:13 -07:00
Chris LuandGitHub	513fd5e0f6	Update release.yml	2021-04-29 23:05:23 -07:00
Chris LuandGitHub	10cddc44de	Update release.yml	2021-04-29 15:50:41 -07:00
Chris LuandGitHub	4fc074db81	Update README.md	2021-04-29 15:46:45 -07:00
Chris LuandGitHub	fa0d973113	Merge pull request #2037 from utsl42/reader_at make reader_at handle random reads more efficiently for FUSE	2021-04-28 17:31:46 -07:00
Nathan Hawkins	042de9359c	make reader_at handle random reads more efficiently for FUSE	2021-04-28 19:13:37 -04:00
Chris Lu	a26a37dfa3	fix compilation fix related to #2032	2021-04-28 13:36:53 -07:00
Chris LuandGitHub	ef94ff6837	Merge pull request #2035 from kmlebedev/fix_chunks_etag fix aws style Etag for chunks	2021-04-28 10:37:18 -07:00
Chris LuandGitHub	8ae3ea4b1d	Merge pull request #2034 from kmlebedev/iam_listkeys_filter iam ListAccessKeys filtred by username	2021-04-28 10:34:40 -07:00
Chris LuandGitHub	9dca75aea8	Merge pull request #2032 from tobiasmuehl/patch-2 Detect rar archives by mime type	2021-04-28 10:31:19 -07:00
Chris LuandGitHub	5198c7a7d5	Merge pull request #2031 from tobiasmuehl/patch-1 Do not compress brotli archives	2021-04-28 10:31:00 -07:00
Konstantin Lebedev	c2269123d3	fix aws style Etag for chunks	2021-04-28 22:28:05 +05:00
Konstantin Lebedev	39f636c682	iam ListAccessKeys filtred by username	2021-04-28 17:15:22 +05:00
Tobias MühlandGitHub	a8864e2abd	Detect rar archives by mime type RAR archives might not have .rar extension, see [Wikipedia](https://en.wikipedia.org/wiki/RAR_(file_format))	2021-04-28 15:54:19 +07:00
Tobias MühlandGitHub	12a7e87007	Do not compress brotli archives	2021-04-28 15:51:49 +07:00
Chris Lu	ccbe02218a	1.16 only due to https://github.com/chrislusf/seaweedfs/pull/2027	2021-04-27 12:49:26 -07:00
Chris LuandGitHub	4bdb17d086	Merge pull request #2030 from kmlebedev/auth_bucket_wildcards auth use bucket wild cards	2021-04-27 10:37:18 -07:00
Konstantin Lebedev	a48785c7df	auth use bucket wild cards	2021-04-27 21:45:40 +05:00
Chris LuandGitHub	5861ba4608	Merge pull request #2027 from bingoohuang/master promote to go:embed instead of github.com/rakyll/statik	2021-04-27 02:48:47 -07:00
bingoohuang	7a9d27fce8	promote to go:embed instead of github.com/rakyll/statik	2021-04-27 17:22:24 +08:00
Chris LuandGitHub	400c8ef8d8	Merge pull request #2025 from bingoohuang/master improvement for minFreeSpace argument	2021-04-26 21:54:09 -07:00
bingoohuang	cf552417a7	minFreeSpace refactored	2021-04-27 10:37:24 +08:00
bingoohuang	31f1cdeac2	minFreeSpace argument allows size like 10GiB	2021-04-26 18:48:34 +08:00
bingoohuang	d861cbd81b	Merge branch 'master' of https://github.com/bingoohuang/seaweedfs	2021-04-26 17:19:35 +08:00
bingoohuangandGitHub	4ee58922ef	Merge pull request #6 from chrislusf/master	2021-04-26 17:15:17 +08:00
Chris Lu	86185262bb	2.41	2021-04-24 16:54:36 -07:00
Chris Lu	79f2e780c1	ensure name pattern checking is case sensitive	2021-04-24 11:51:23 -07:00
Chris Lu	ddc8643ee0	filer: directory listing adds namePatternExclude fix https://github.com/chrislusf/seaweedfs/issues/2023	2021-04-24 11:49:03 -07:00
Chris Lu	f0ad172e80	shell: show which server holds the lock fix https://github.com/chrislusf/seaweedfs/issues/1983	2021-04-22 23:56:35 -07:00
Chris Lu	89eb9f6e70	clean up .uploads directory in mysql and postgres tables fix https://github.com/chrislusf/seaweedfs/issues/1957 When no uploads are running, you can run this SQL to clean up. delete from <bucket_name> where directory like '/.uploads/%'	2021-04-22 23:23:23 -07:00
Chris Lu	46ef1811a1	correct help message	2021-04-22 22:26:38 -07:00
Chris Lu	11c120c040	master UI adds volume size limit	2021-04-22 14:22:48 -07:00
Chris Lu	6e5df901e4	adjust package names	2021-04-22 14:22:48 -07:00
Chris LuandGitHub	c60f2d333e	Update cleanup.yml	2021-04-22 00:31:33 -07:00
Chris Lu	ca998328c2	do not add new volumes when below minFreeSpacePercent fix https://github.com/chrislusf/seaweedfs/issues/2017	2021-04-21 23:11:11 -07:00
Chris LuandGitHub	7deb4b20cd	Update cleanup.yml	2021-04-21 12:09:24 -07:00
Chris LuandGitHub	f4d77e527d	Update cleanup.yml	2021-04-21 12:02:22 -07:00
Chris Lu	cd7bf1a72a	filer.copy copy empty folders fix https://github.com/chrislusf/seaweedfs/issues/2016	2021-04-21 11:17:43 -07:00
Chris Lu	a8114da02d	avoid thundering herd effect transient errors may cause thundering herd effect to all trying to recover from remove ec shards	2021-04-21 10:17:12 -07:00
Chris Lu	ae74d8f02a	fix error message related to https://github.com/chrislusf/seaweedfs/issues/2012	2021-04-21 01:40:16 -07:00
Chris Lu	bcd400995a	Revert "Update cleanup.yml" This reverts commit `ecb60d5f03`.	2021-04-20 20:11:52 -07:00
Chris LuandGitHub	ecb60d5f03	Update cleanup.yml	2021-04-20 20:08:42 -07:00
Chris Lu	11c405fc85	ensure file handles are released	2021-04-20 19:56:55 -07:00
Chris LuandGitHub	72e9d9673e	Merge pull request #2013 from sryio/master fix path-specific filer store comment error	2021-04-19 20:01:50 -07:00
liuxiaoboandGitHub	c31c5e829c	fix path-specific filer store comment error	2021-04-20 10:08:58 +08:00
Chris Lu	83cf94ad2d	delay new file creation unless file is opened exclusively	2021-04-19 10:58:25 -07:00
Chris Lu	1faafce832	fix docker image release	2021-04-18 21:46:03 -07:00
Chris Lu	e983f91b03	2.40	2021-04-18 13:58:01 -07:00
Chris Lu	4b3cc28cab	fuse 1.1.4	2021-04-18 13:29:37 -07:00
Chris Lu	d1c813c470	let the fuse library manage directory id otherwise, on mac, during large directory deletion, if some ReaDirAll happens, the lib seems confused about the directories, and some child directories are not deleted.	2021-04-18 13:07:28 -07:00
Chris Lu	372872ebbf	set root node inode number	2021-04-18 13:07:28 -07:00
Chris Lu	e332da4837	set inode value	2021-04-18 13:07:28 -07:00
Chris Lu	2acf6be24e	resend the http request if connection is stale	2021-04-18 13:07:28 -07:00
Chris Lu	6cbd786db9	correctly runs git clone	2021-04-18 13:07:28 -07:00
Chris Lu	d41e6826d3	adjust logging	2021-04-18 13:06:38 -07:00
Chris Lu	d9a2a7f1c4	WIP no memory issue if some directory is removed, it may have this error $ rm -Rf ~/tmp/m2/s1 rm: fts_read: Device not configured	2021-04-18 13:06:38 -07:00
Chris Lu	54410ca955	cleaner way to set readonly	2021-04-18 10:02:02 -07:00
Chris LuandGitHub	b0127645a5	Merge pull request #2008 from kmlebedev/fix_volume_etag revert volume etag	2021-04-16 13:08:09 -07:00
Konstantin Lebedev	198688c717	revert volume etag	2021-04-16 23:22:31 +05:00
Chris Lu	c83ab91e2e	remove unused variable	2021-04-16 10:34:02 -07:00
Chris Lu	3074e9b428	ensure consistent inode value	2021-04-15 22:42:24 -07:00
Chris Lu	b971317a16	avoid possible corrupted file names	2021-04-15 11:41:34 -07:00
Chris Lu	283d703d50	adjust text	2021-04-15 11:29:58 -07:00
Chris Lu	609e228578	avoid forward slash in file names	2021-04-15 10:53:04 -07:00
Chris Lu	ba92f2e714	add node.selectedVolumes fix https://github.com/chrislusf/seaweedfs/issues/1990	2021-04-15 03:19:28 -07:00
Chris Lu	16c0304416	ensure to delete on filer also	2021-04-15 02:29:04 -07:00
Chris Lu	217e0f9066	mount: remove folder recursively	2021-04-15 01:51:10 -07:00
Chris Lu	3e669e6d7b	mostly refactoring, add some error handling	2021-04-14 23:33:37 -07:00
Chris Lu	07f712c83f	fix typo	2021-04-14 23:21:38 -07:00
Chris Lu	36c79de3f4	fuse mount: dir ReadDirAll avoid extra conversion to filer_pb.Entry	2021-04-14 23:21:24 -07:00
Chris Lu	e41766feb6	fuse mount: dir lookup avoids extra conversion to filer_pb.Entry object	2021-04-14 22:38:34 -07:00
Chris Lu	1adc8f86ea	lighten up File object file.entry only exists when file.isOpen	2021-04-14 20:49:15 -07:00
Chris Lu	6bc09b18c4	truncate is a bit faster to reuse the storage	2021-04-14 20:26:56 -07:00
Chris Lu	c04b7e106f	mount: remove entry from Dir object	2021-04-14 20:26:13 -07:00
Chris LuandGitHub	ffee470cfc	Update release.yml	2021-04-14 15:47:09 -07:00
Chris Lu	fc0cbf565f	add option to obfuscate the file names	2021-04-14 15:37:24 -07:00
Chris Lu	e75633c64f	volume.check.disk: break loop for read only volumes fix https://github.com/chrislusf/seaweedfs/issues/2002	2021-04-14 12:40:13 -07:00
Chris Lu	9d50867d08	volume.tier.move: avoid data loss when destination volume server already has the volume fix https://github.com/chrislusf/seaweedfs/issues/2001	2021-04-14 10:26:26 -07:00
Chris Lu	ff4c1d5965	adjust logging fix https://github.com/chrislusf/seaweedfs/issues/1999	2021-04-14 10:04:26 -07:00
Chris LuandGitHub	4480d72cab	Merge pull request #1998 from fanqiehc/fix_indent fix volume-service helm template indentation	2021-04-14 04:40:05 -07:00
Chris LuandGitHub	8efd331ce0	Merge pull request #1997 from qieqieplus/fix-volume-assign fix #1996	2021-04-14 04:39:14 -07:00
zhanghc	606c6ae8e8	fix volume-service helm template indentation	2021-04-14 18:58:32 +08:00
qieqieplus	270645f8d7	fix #1996	2021-04-14 18:29:28 +08:00
Chris Lu	90677e1097	ensure to call line.Close() fix https://github.com/chrislusf/seaweedfs/issues/1995 similar to https://github.com/peterh/liner/issues/104	2021-04-14 01:33:21 -07:00
Chris Lu	3f3268cd1b	go fmt	2021-04-14 00:30:16 -07:00
Chris Lu	ca0f07a188	move file reader, entryViewCache to file handle reduce file object size	2021-04-14 00:29:58 -07:00
Chris Lu	5985a7d38d	add log level possible values fix https://github.com/chrislusf/seaweedfs/issues/1989	2021-04-12 21:15:51 -07:00
Chris LuandGitHub	f5de42fae3	Merge pull request #1975 from kmlebedev/iam_handlers IAM handlers	2021-04-12 12:07:45 -07:00
Chris Lu	1e033d45b8	simpler logic related to https://github.com/chrislusf/seaweedfs/pull/1981	2021-04-12 12:04:53 -07:00
Chris LuandGitHub	52200a903b	Merge pull request #1981 from ueni-ltd/if-modified-since Fix If-Modified-Since behavior	2021-04-12 12:02:54 -07:00
Chris Lu	519b0e1e49	filer: upload to a directory without "/" suffix fix https://github.com/chrislusf/seaweedfs/issues/1988	2021-04-12 11:56:56 -07:00
Konstantin Lebedev	8e02e138ea	Merge branch 'upstreamMaster' into iam_handlers	2021-04-12 11:22:51 +05:00
Konstantin Lebedev	5021bea698	GetUserPolicy	2021-04-10 23:57:45 +05:00
Merlin Gaillard	f952f979d1	filer: return 304 when If-Modified-Since == Last-Modified	2021-04-09 15:04:17 +02:00
Merlin Gaillard	4d4acc715e	s3api: handle 304 response code from filer	2021-04-09 12:13:19 +02:00
Konstantin Lebedev	ba175f81b5	add auth aws signV4	2021-04-08 17:40:47 +05:00
Konstantin Lebedev	995ae91007	add DeleteUserPolicy	2021-04-08 11:16:36 +05:00
bingoohuangandGitHub	70da715d8d	Merge pull request #4 from chrislusf/master Syncing to the original repository	2019-12-30 13:05:50 +08:00
bingoohuangandGitHub	93a7df500f	merge (#3 ) merge	2019-07-22 11:05:05 +08:00
bingoohuangandGitHub	6a573d62e0	merge laster (#2 ) merge laster	2019-07-18 16:57:16 +08:00
bingoohuangandGitHub	d19bbee98d	keep update from original (#1 ) keep update from original	2019-07-16 11:13:23 +08:00