3.01

go fmt
fix test
2026-10-03 13:11:48 +00:00 · 2022-05-01 23:33:45 -07:00 · 2022-05-01 23:16:29 -07:00 · 2022-05-01 23:15:58 -07:00 · 2022-05-01 23:14:04 -07:00 · 2022-05-01 21:59:16 -07:00
168 changed files with 5555 additions and 1964 deletions
@@ -3,8 +3,8 @@ updates:
 - package-ecosystem: "github-actions"
  directory: "/"
  schedule:
-      interval: "daily"
+      interval: "weekly"
 - package-ecosystem: gomod
  directory: "/"
  schedule:
-    interval: daily
+    interval: weekly
@@ -4,9 +4,14 @@ on:
  push:
    branches: [ master ]

+permissions:
+  contents: read
+
 jobs:

  cleanup:
+    permissions:
+      contents: write  # for mknejp/delete-release-assets to delete release assets
    runs-on: ubuntu-latest

    steps:
@@ -21,6 +26,8 @@ jobs:
            weed-*

  build_dev_linux_windows:
+    permissions:
+      contents: write  # for wangyoucao577/go-release-action to upload release assets
    needs: cleanup
    runs-on: ubuntu-latest
    strategy:
@@ -68,12 +75,15 @@ jobs:
          asset_name: "weed-${{ env.BUILD_TIME }}-${{ matrix.goos }}-${{ matrix.goarch }}"

  build_dev_darwin:
+    permissions:
+      contents: write  # for wangyoucao577/go-release-action to upload release assets
    needs: build_dev_linux_windows
    runs-on: ubuntu-latest
    strategy:
      matrix:
        goos: [darwin]
-        goarch: [amd64, arm64]
+        # goarch: [amd64, arm64]
+        goarch: [amd64]

    steps:

@@ -11,9 +11,14 @@ on:
  workflow_dispatch:

 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
+permissions:
+  contents: read
+
 jobs:

  build-release-binaries_windows:
+    permissions:
+      contents: write  # for wangyoucao577/go-release-action to upload release assets
    runs-on: ubuntu-latest
    strategy:
      matrix:
@@ -11,9 +11,14 @@ on:
  workflow_dispatch:

 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
+permissions:
+  contents: read
+
 jobs:

  build-release-binaries_linux:
+    permissions:
+      contents: write  # for wangyoucao577/go-release-action to upload release assets
    runs-on: ubuntu-latest
    strategy:
      matrix:
@@ -11,14 +11,20 @@ on:
  workflow_dispatch:

 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
+permissions:
+  contents: read
+
 jobs:

  build-release-binaries_darwin:
+    permissions:
+      contents: write  # for wangyoucao577/go-release-action to upload release assets
    runs-on: ubuntu-latest
    strategy:
      matrix:
        goos: [darwin]
-        goarch: [amd64, arm64]
+        # goarch: [amd64, arm64]
+        goarch: [amd64]

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
@@ -11,9 +11,14 @@ on:
  workflow_dispatch:

 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
+permissions:
+  contents: read
+
 jobs:

  build-release-binaries_freebsd:
+    permissions:
+      contents: write  # for wangyoucao577/go-release-action to upload release assets
    runs-on: ubuntu-latest
    strategy:
      matrix:
@@ -20,7 +20,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: docker/metadata-action@e5622373a38e60fb6d795a4421e56882f2d7a681 # v3
+        uses: docker/metadata-action@f2a13332ac1ce8c0a71aeac48a150dbb1838ab67 # v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -21,7 +21,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: docker/metadata-action@e5622373a38e60fb6d795a4421e56882f2d7a681 # v3
+        uses: docker/metadata-action@f2a13332ac1ce8c0a71aeac48a150dbb1838ab67 # v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -20,7 +20,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: docker/metadata-action@e5622373a38e60fb6d795a4421e56882f2d7a681 # v3
+        uses: docker/metadata-action@f2a13332ac1ce8c0a71aeac48a150dbb1838ab67 # v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -21,7 +21,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: docker/metadata-action@e5622373a38e60fb6d795a4421e56882f2d7a681 # v3
+        uses: docker/metadata-action@f2a13332ac1ce8c0a71aeac48a150dbb1838ab67 # v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -21,7 +21,7 @@ jobs:
      -
        name: Docker meta
        id: docker_meta
-        uses: docker/metadata-action@e5622373a38e60fb6d795a4421e56882f2d7a681 # v3
+        uses: docker/metadata-action@f2a13332ac1ce8c0a71aeac48a150dbb1838ab67 # v3
        with:
          images: |
            chrislusf/seaweedfs
@@ -0,0 +1,14 @@
+name: 'Dependency Review'
+on: [pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout Repository'
+        uses: actions/checkout@dcd71f646680f2efd8db4afa5ad64fdcba30e748
+      - name: 'Dependency Review'
+        uses: actions/dependency-review-action@3f943b86c9a289f4e632c632695e2e0898d9d67d
@@ -32,13 +32,9 @@ jobs:
    - name: Get dependencies
      run: |
        cd weed; go get -v -t -d ./...
-        if [ -f Gopkg.toml ]; then
-            curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
-            dep ensure
-        fi

    - name: Build
-      run: cd weed; go build -v .
+      run: cd weed; go build -tags "elastic gocdk sqlite hdfs" -v .

    - name: Test
-      run: cd weed; go test -v ./...
+      run: cd weed; go test -tags "elastic gocdk sqlite hdfs" -v ./...
@@ -55,6 +55,8 @@ Temporary Items
 # Mongo Explorer plugin:
 # .idea/mongoSettings.xml

+## vscode
+.vscode
 ## File-based project format:
 *.ipr
 *.iws
@@ -75,6 +77,8 @@ com_crashlytics_export_strings.xml
 crashlytics.properties
 crashlytics-build.properties

+workspace/
+
 test_data
 build
 target
@@ -0,0 +1,11 @@
+BINARY = weed
+
+SOURCE_DIR = .
+
+all: install
+
+install:
+	cd weed; go install
+
+full_install:
+	cd weed; go install -tags "elastic gocdk sqlite hdfs"
@@ -42,6 +42,7 @@ Your support will be really appreciated by me and other supporters!
 - [SeaweedFS on Slack](https://join.slack.com/t/seaweedfs/shared_invite/enQtMzI4MTMwMjU2MzA3LTEyYzZmZWYzOGQ3MDJlZWMzYmI0OTE4OTJiZjJjODBmMzUxNmYwODg0YjY3MTNlMjBmZDQ1NzQ5NDJhZWI2ZmY)
 - [SeaweedFS on Twitter](https://twitter.com/SeaweedFS)
 - [SeaweedFS on Telegram](https://t.me/Seaweedfs) 
+- [SeaweedFS on Reddit](https://www.reddit.com/r/SeaweedFS/)
 - [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)
@@ -54,6 +55,7 @@ Table of Contents
 * [Quick Start](#quick-start)
    * [Quick Start for S3 API on Docker](#quick-start-for-s3-api-on-docker)
    * [Quick Start with Single Binary](#quick-start-with-single-binary)
+    * [Quick Start SeaweedFS S3 on AWS](#quick-start-seaweedfs-s3-on-aws)
 * [Introduction](#introduction)
 * [Features](#features)
    * [Additional Features](#additional-features)
@@ -82,6 +84,9 @@ Table of Contents

 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 SeaweedFS S3 on AWS ##
+* Setup fast production-ready [SeaweedFS S3 on AWS with cloudformation](https://aws.amazon.com/marketplace/pp/prodview-nzelz5gprlrjc)
+
 ## Introduction ##

 SeaweedFS is a simple and highly scalable distributed file system. There are two objectives:
@@ -1,4 +1,4 @@
-FROM golang:1.17-alpine as builder
+FROM golang:1.18-alpine as builder
 RUN apk add git g++ fuse
 RUN mkdir -p /go/src/github.com/chrislusf/
 RUN git clone https://github.com/chrislusf/seaweedfs /go/src/github.com/chrislusf/seaweedfs
@@ -1,4 +1,4 @@
-FROM golang:1.17-alpine as builder
+FROM golang:1.18-alpine as builder
 RUN apk add git g++ fuse
 RUN mkdir -p /go/src/github.com/chrislusf/
 RUN git clone https://github.com/chrislusf/seaweedfs /go/src/github.com/chrislusf/seaweedfs
@@ -1,9 +1,9 @@
-FROM golang:1.17-buster as builder
+FROM golang:1.18-buster as builder

 RUN apt-get update
 RUN apt-get install -y build-essential libsnappy-dev zlib1g-dev libbz2-dev libgflags-dev liblz4-dev libzstd-dev

-ENV ROCKSDB_VERSION v6.22.1
+ENV ROCKSDB_VERSION v7.0.4

 # build RocksDB
 RUN cd /tmp && \
@@ -55,6 +55,9 @@ cluster: build
 2clusters: build
 	docker-compose -f compose/local-clusters-compose.yml -p seaweedfs up

+hashicorp_raft: build
+	docker-compose -f compose/local-hashicorp-raft-compose.yml -p seaweedfs up
+
 s3tests: build s3tests_build
 	docker-compose -f compose/local-s3tests-compose.yml -p seaweedfs up

@@ -0,0 +1,89 @@
+version: '2'
+
+services:
+  master0:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 9333:9333
+      - 19333:19333
+    command: "-v=4 master -volumeSizeLimitMB 100 -raftHashicorp -ip=master0 -port=9333 -peers=master1:9334,master2:9335 -mdir=/data"
+    volumes:
+      - ./master/0:/data
+    environment:
+      WEED_MASTER_VOLUME_GROWTH_COPY_1: 1
+      WEED_MASTER_VOLUME_GROWTH_COPY_2: 2
+      WEED_MASTER_VOLUME_GROWTH_COPY_OTHER: 1
+  master1:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 9334:9334
+      - 19334:19334
+    command: "-v=4 master -volumeSizeLimitMB 100 -raftHashicorp -ip=master1 -port=9334 -peers=master0:9333,master2:9335 -mdir=/data"
+    volumes:
+      - ./master/1:/data
+    environment:
+      WEED_MASTER_VOLUME_GROWTH_COPY_1: 1
+      WEED_MASTER_VOLUME_GROWTH_COPY_2: 2
+      WEED_MASTER_VOLUME_GROWTH_COPY_OTHER: 1
+  master2:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 9335:9335
+      - 19335:19335
+    command: "-v=4 master -volumeSizeLimitMB 100 -raftHashicorp -ip=master2 -port=9335 -peers=master0:9333,master1:9334 -mdir=/data"
+    volumes:
+      - ./master/2:/data
+    environment:
+      WEED_MASTER_VOLUME_GROWTH_COPY_1: 1
+      WEED_MASTER_VOLUME_GROWTH_COPY_2: 2
+      WEED_MASTER_VOLUME_GROWTH_COPY_OTHER: 1
+  volume1:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 8080:8080
+      - 18080:18080
+    command: 'volume -dataCenter=dc1 -rack=v1 -mserver="master0:9333,master1:9334,master2:9335" -port=8080 -ip=volume1 -publicUrl=localhost:8080 -preStopSeconds=1'
+    depends_on:
+      - master0
+      - master1
+  volume2:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 8082:8082
+      - 18082:18082
+    command: 'volume -dataCenter=dc2 -rack=v2 -mserver="master0:9333,master1:9334,master2:9335" -port=8082 -ip=volume2 -publicUrl=localhost:8082 -preStopSeconds=1'
+    depends_on:
+      - master0
+      - master1
+  volume3:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 8083:8083
+      - 18083:18083
+    command: 'volume -dataCenter=dc3 -rack=v3 -mserver="master0:9333,master1:9334,master2:9335" -port=8083 -ip=volume3 -publicUrl=localhost:8083 -preStopSeconds=1'
+    depends_on:
+      - master0
+      - master1
+  filer:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 8888:8888
+      - 18888:18888
+      - 8111:8111
+    command: 'filer -defaultReplicaPlacement=100 -iam -master="master0:9333,master1:9334,master2:9335"'
+    depends_on:
+      - master0
+      - master1
+      - volume1
+      - volume2
+  s3:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - 8333:8333
+    command: '-v=9 s3 -ip.bind="s3" -filer="filer:8888"'
+    depends_on:
+      - master0
+      - master1
+      - volume1
+      - volume2
+      - filer
@@ -28,3 +28,4 @@ sleep_minutes = 17          # sleep minutes between each script execution
 	region = "us-east-2"
 	bucket = "volume_bucket"    # an existing bucket
 	endpoint = "http://server2:8333"
+	storage_class = "STANDARD_IA"
@@ -4,13 +4,13 @@ go 1.18

 require (
 	cloud.google.com/go v0.100.2 // indirect
-	cloud.google.com/go/pubsub v1.19.0
-	cloud.google.com/go/storage v1.21.0
+	cloud.google.com/go/pubsub v1.20.0
+	cloud.google.com/go/storage v1.22.0
 	github.com/Azure/azure-pipeline-go v0.2.3
 	github.com/Azure/azure-storage-blob-go v0.14.0
 	github.com/OneOfOne/xxhash v1.2.8
 	github.com/Shopify/sarama v1.32.0
-	github.com/aws/aws-sdk-go v1.43.30
+	github.com/aws/aws-sdk-go v1.43.45
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72
 	github.com/bwmarrin/snowflake v0.3.0
@@ -49,7 +49,7 @@ require (
 	github.com/google/go-cmp v0.5.7 // indirect
 	github.com/google/uuid v1.3.0
 	github.com/google/wire v0.5.0 // indirect
-	github.com/googleapis/gax-go/v2 v2.2.0 // indirect
+	github.com/googleapis/gax-go/v2 v2.3.0 // indirect
 	github.com/gorilla/mux v1.8.0
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0
 	github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed // indirect
@@ -64,14 +64,14 @@ require (
 	github.com/json-iterator/go v1.1.12
 	github.com/karlseguin/ccache/v2 v2.0.8
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
-	github.com/klauspost/compress v1.14.4 // indirect
+	github.com/klauspost/compress v1.15.1 // indirect
 	github.com/klauspost/reedsolomon v1.9.16
 	github.com/kurin/blazer v0.5.3
-	github.com/lib/pq v1.10.4
+	github.com/lib/pq v1.10.5
 	github.com/linxGnu/grocksdb v1.7.0
-	github.com/magiconair/properties v1.8.5 // indirect
+	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/mattn/go-ieproxy v0.0.1 // indirect
+	github.com/mattn/go-ieproxy v0.0.3 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/mitchellh/mapstructure v1.4.3 // indirect
@@ -94,15 +94,15 @@ require (
 	github.com/seaweedfs/goexif v2.0.0+incompatible
 	github.com/sirupsen/logrus v1.8.1 // indirect
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
-	github.com/spf13/afero v1.7.0 // indirect
+	github.com/spf13/afero v1.8.2 // indirect
 	github.com/spf13/cast v1.4.1 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/spf13/viper v1.10.1
+	github.com/spf13/viper v1.11.0
 	github.com/streadway/amqp v1.0.0
 	github.com/stretchr/testify v1.7.1
 	github.com/stvp/tempredis v0.0.0-20181119212430-b82af8480203
 	github.com/syndtr/goleveldb v1.0.1-0.20190318030020-c3a204f8e965
-	github.com/tidwall/gjson v1.14.0
+	github.com/tidwall/gjson v1.14.1
 	github.com/tidwall/match v1.1.1
 	github.com/tidwall/pretty v1.2.0 // indirect
 	github.com/tsuna/gohbase v0.0.0-20201125011725-348991136365
@@ -115,83 +115,102 @@ require (
 	github.com/xdg-go/scram v1.1.0 // indirect
 	github.com/xdg-go/stringprep v1.0.2 // indirect
 	github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
-	go.etcd.io/etcd/client/v3 v3.5.2
-	go.mongodb.org/mongo-driver v1.8.4
+	go.etcd.io/etcd/client/v3 v3.5.4
+	go.mongodb.org/mongo-driver v1.9.0
 	go.opencensus.io v0.23.0 // indirect
-	gocloud.dev v0.24.0
-	gocloud.dev/pubsub/natspubsub v0.24.0
-	gocloud.dev/pubsub/rabbitpubsub v0.24.0
-	golang.org/x/crypto v0.0.0-20220214200702-86341886e292 // indirect
+	gocloud.dev v0.25.0
+	gocloud.dev/pubsub/natspubsub v0.25.0
+	gocloud.dev/pubsub/rabbitpubsub v0.25.0
+	golang.org/x/crypto v0.0.0-20220411220226-7b82a4e95df4 // indirect
+	golang.org/x/exp v0.0.0-20220414153411-bcd21879b8fd
 	golang.org/x/image v0.0.0-20200119044424-58c23975cae1
-	golang.org/x/net v0.0.0-20220325170049-de3da57026de
-	golang.org/x/oauth2 v0.0.0-20220309155454-6242fa91716a // indirect
-	golang.org/x/sys v0.0.0-20220328115105-d36c6a25d886
+	golang.org/x/net v0.0.0-20220412020605-290c469a71a5
+	golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5 // indirect
+	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad
 	golang.org/x/text v0.3.7 // indirect
-	golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	google.golang.org/api v0.74.0
+	golang.org/x/tools v0.1.8-0.20211029000441-d6a9af8af023
+	golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f // indirect
+	google.golang.org/api v0.75.0
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20220324131243-acbaeb5b85eb // indirect
-	google.golang.org/grpc v1.45.0
+	google.golang.org/genproto v0.0.0-20220414192740-2d67ff6cf2b4 // indirect
+	google.golang.org/grpc v1.46.0
 	google.golang.org/protobuf v1.28.0
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	modernc.org/b v1.0.0 // indirect
-	modernc.org/cc/v3 v3.35.24 // indirect
-	modernc.org/ccgo/v3 v3.15.18 // indirect
-	modernc.org/libc v1.14.12 // indirect
+	modernc.org/cc/v3 v3.35.26 // indirect
+	modernc.org/ccgo/v3 v3.16.2 // indirect
+	modernc.org/libc v1.15.0 // indirect
 	modernc.org/mathutil v1.4.1 // indirect
 	modernc.org/memory v1.0.7 // indirect
 	modernc.org/opt v0.1.1 // indirect
-	modernc.org/sqlite v1.15.4
+	modernc.org/sqlite v1.17.0
 	modernc.org/strutil v1.1.1 // indirect
 	modernc.org/token v1.0.0 // indirect
 )

 require (
+	github.com/Jille/raft-grpc-transport v1.2.0
+	github.com/arangodb/go-driver v1.3.1
 	github.com/fluent/fluent-logger-golang v1.9.0
 	github.com/hanwen/go-fuse/v2 v2.1.0
+	github.com/hashicorp/raft v1.3.8
+	github.com/hashicorp/raft-boltdb v0.0.0-20220329195025-15018e9b97e0
 )

 require (
-	cloud.google.com/go/compute v1.5.0 // indirect
-	cloud.google.com/go/iam v0.1.1 // indirect
-	github.com/aws/aws-sdk-go-v2 v1.9.0 // indirect
-	github.com/aws/aws-sdk-go-v2/config v1.7.0 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.4.0 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.5.0 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/ini v1.2.2 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.3.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.4.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.7.0 // indirect
-	github.com/aws/smithy-go v1.8.0 // indirect
+	cloud.google.com/go/compute v1.6.0 // indirect
+	cloud.google.com/go/iam v0.3.0 // indirect
+	github.com/arangodb/go-velocypack v0.0.0-20200318135517-5af53c29c67e // indirect
+	github.com/armon/go-metrics v0.3.10 // indirect
+	github.com/aws/aws-sdk-go-v2 v1.16.2 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.15.3 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.11.2 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.12.3 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.9 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.3 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.10 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.3 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sns v1.17.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sqs v1.18.3 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.11.3 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.16.3 // indirect
+	github.com/aws/smithy-go v1.11.2 // indirect
+	github.com/boltdb/bolt v1.3.1 // indirect
 	github.com/d4l3k/messagediff v1.2.1 // indirect
+	github.com/fatih/color v1.13.0 // indirect
 	github.com/fclairamb/go-log v0.1.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8 // indirect
+	github.com/googleapis/go-type-adapters v1.0.0 // indirect
+	github.com/hashicorp/go-hclog v1.2.0 // indirect
+	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
+	github.com/hashicorp/go-msgpack v1.1.5 // indirect
+	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/jcmturner/aescts/v2 v2.0.0 // indirect
 	github.com/jcmturner/dnsutils/v2 v2.0.0 // indirect
 	github.com/jcmturner/goidentity/v6 v6.0.1 // indirect
 	github.com/jcmturner/rpc/v2 v2.0.3 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.0.6 // indirect
+	github.com/mattn/go-colorable v0.1.12 // indirect
 	github.com/mattn/go-runewidth v0.0.7 // indirect
 	github.com/mattn/go-sqlite3 v2.0.1+incompatible // indirect
-	github.com/nats-io/nats.go v1.12.0 // indirect
+	github.com/nats-io/nats.go v1.13.1-0.20220121202836-972a071d373d // indirect
 	github.com/nats-io/nkeys v0.3.0 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.0-beta.8 // indirect
 	github.com/philhofer/fwd v1.1.1 // indirect
 	github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/subosito/gotenv v1.2.0 // indirect
 	github.com/tinylib/msgp v1.1.6 // indirect
-	go.etcd.io/etcd/api/v3 v3.5.2 // indirect
-	go.etcd.io/etcd/client/pkg/v3 v3.5.2 // indirect
+	go.etcd.io/etcd/api/v3 v3.5.4 // indirect
+	go.etcd.io/etcd/client/pkg/v3 v3.5.4 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
-	go.uber.org/multierr v1.7.0 // indirect
-	go.uber.org/zap v1.19.0 // indirect
-	golang.org/x/mod v0.5.0 // indirect
+	go.uber.org/multierr v1.8.0 // indirect
+	go.uber.org/zap v1.21.0 // indirect
+	golang.org/x/mod v0.6.0-dev.0.20211013180041-c96bc1413d57 // indirect
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
-	gopkg.in/ini.v1 v1.66.2 // indirect
+	gopkg.in/ini.v1 v1.66.4 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 	lukechampine.com/uint128 v1.1.1 // indirect
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "2.97"
-version: "2.97"
+appVersion: "3.01"
+version: "3.01"
@@ -154,13 +154,16 @@ spec:
              {{- end }}
              {{- end }}
              -master={{ range $index := until (.Values.master.replicas | int) }}${SEAWEEDFS_FULLNAME}-master-{{ $index }}.${SEAWEEDFS_FULLNAME}-master:{{ $.Values.master.port }}{{ if lt $index (sub ($.Values.master.replicas | int) 1) }},{{ end }}{{ end }}
-          {{- if or (.Values.global.enableSecurity) (.Values.filer.extraVolumeMounts) }}    
          volumeMounts:
            - name: seaweedfs-filer-log-volume
              mountPath: "/logs/"
            - mountPath: /etc/sw
              name: config-users
              readOnly: true
+            {{- if .Values.filer.enablePVC }}
+            - name: data-filer
+              mountPath: /data
+            {{- end }}
            {{- if .Values.global.enableSecurity }}
            - name: security-config
              readOnly: true
@@ -183,7 +186,6 @@ spec:
              mountPath: /usr/local/share/ca-certificates/client/
            {{- end }}
            {{ tpl .Values.filer.extraVolumeMounts . | nindent 12 | trim }}
-          {{- end }}
          ports:
            - containerPort: {{ .Values.filer.port }}
              name: swfs-filer
@@ -250,16 +252,18 @@ spec:
      nodeSelector:
        {{ tpl .Values.filer.nodeSelector . | indent 8 | trim }}
      {{- end }}
-{{/*  volumeClaimTemplates:*/}}
-{{/*    - metadata:*/}}
-{{/*        name: data-{{ .Release.Namespace }}*/}}
-{{/*      spec:*/}}
-{{/*        accessModes:*/}}
-{{/*          - ReadWriteOnce*/}}
-{{/*        resources:*/}}
-{{/*          requests:*/}}
-{{/*            storage: {{ .Values.filer.storage }}*/}}
-{{/*        {{- if .Values.filer.storageClass }}*/}}
-{{/*        storageClassName: {{ .Values.filer.storageClass }}*/}}
-{{/*      {{- end }}*/}}
+  {{- if .Values.filer.enablePVC }}
+  volumeClaimTemplates:
+  - metadata:
+      name: data-filer
+    spec:
+      accessModes:
+      - ReadWriteOnce
+      resources:
+        requests:
+          storage: {{ .Values.filer.storage }}
+      {{- if .Values.filer.storageClass }}
+      storageClassName: {{ .Values.filer.storageClass }}
+      {{- end }}
+  {{- end }}
 {{- end }}
@@ -41,8 +41,7 @@ master:
  grpcPort: 19333
  ipBind: "0.0.0.0"
  volumePreallocate: false
-  #Master stops directing writes to oversized volumes
-  volumeSizeLimitMB: 30000
+  volumeSizeLimitMB: 1000
  loggingOverrideLevel: null
  #number of seconds between heartbeats, default 5
  pulseSeconds: null
@@ -62,6 +61,8 @@ master:
  extraVolumes: ""
  extraVolumeMounts: ""

+  # enablePVC will create a pvc for filer for data persistence.
+  enablePVC: false
  # storage and storageClass are the settings for configuring stateful
  # storage for the master pods. storage should be set to the disk size of
  # the attached volume. storageClass is the class of storage which defaults
@@ -358,6 +359,7 @@ filer:
    WEED_MYSQL_CONNECTION_MAX_LIFETIME_SECONDS: "600"
    # enable usage of memsql as filer backend
    WEED_MYSQL_INTERPOLATEPARAMS: "true"
+    # if you want to use leveldb2, then should enable "enablePVC". or you may lose your data.
    WEED_LEVELDB2_ENABLED: "false"
    # with http DELETE, by default the filer would check whether a folder is empty.
    # recursive_delete will delete all sub folders and files, similar to "rm -Rf"
@@ -319,6 +319,9 @@ message PingRequest {
    string target_type = 2;
 }
 message PingResponse {
+    int64 start_time_ns = 1;
+    int64 remote_time_ns = 2;
+    int64 stop_time_ns = 3;
 }

 message GetFilerConfigurationRequest {
@@ -36,7 +36,7 @@
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-common</artifactId>
-            <version>3.2.2</version>
+            <version>3.2.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.hadoop</groupId>
@@ -6,7 +6,7 @@

    <properties>
        <seaweedfs.client.version>2.85</seaweedfs.client.version>
-        <hadoop.version>3.1.4</hadoop.version>
+        <hadoop.version>3.2.3</hadoop.version>
    </properties>

    <groupId>com.github.chrislusf</groupId>
@@ -15,6 +15,15 @@ const (
 	BrokerType       = "broker"
 )

+type FilerGroup string
+type Filers struct {
+	filers  map[pb.ServerAddress]*ClusterNode
+	leaders *Leaders
+}
+type Leaders struct {
+	leaders [3]pb.ServerAddress
+}
+
 type ClusterNode struct {
 	Address   pb.ServerAddress
 	Version   string
@@ -22,42 +31,50 @@ type ClusterNode struct {
 	createdTs time.Time
 }

-type Leaders struct {
-	leaders [3]pb.ServerAddress
-}
-
 type Cluster struct {
-	filers       map[pb.ServerAddress]*ClusterNode
-	filersLock   sync.RWMutex
-	filerLeaders *Leaders
-	brokers      map[pb.ServerAddress]*ClusterNode
-	brokersLock  sync.RWMutex
+	filerGroup2filers map[FilerGroup]*Filers
+	filersLock        sync.RWMutex
+	brokers           map[pb.ServerAddress]*ClusterNode
+	brokersLock       sync.RWMutex
 }

 func NewCluster() *Cluster {
 	return &Cluster{
-		filers:       make(map[pb.ServerAddress]*ClusterNode),
-		filerLeaders: &Leaders{},
-		brokers:      make(map[pb.ServerAddress]*ClusterNode),
+		filerGroup2filers: make(map[FilerGroup]*Filers),
+		brokers:           make(map[pb.ServerAddress]*ClusterNode),
 	}
 }

-func (cluster *Cluster) AddClusterNode(nodeType string, address pb.ServerAddress, version string) []*master_pb.KeepConnectedResponse {
+func (cluster *Cluster) getFilers(filerGroup FilerGroup, createIfNotFound bool) *Filers {
+	cluster.filersLock.Lock()
+	defer cluster.filersLock.Unlock()
+	filers, found := cluster.filerGroup2filers[filerGroup]
+	if !found && createIfNotFound {
+		filers = &Filers{
+			filers:  make(map[pb.ServerAddress]*ClusterNode),
+			leaders: &Leaders{},
+		}
+		cluster.filerGroup2filers[filerGroup] = filers
+	}
+	return filers
+}
+
+func (cluster *Cluster) AddClusterNode(ns, nodeType string, address pb.ServerAddress, version string) []*master_pb.KeepConnectedResponse {
+	filerGroup := FilerGroup(ns)
 	switch nodeType {
 	case FilerType:
-		cluster.filersLock.Lock()
-		defer cluster.filersLock.Unlock()
-		if existingNode, found := cluster.filers[address]; found {
+		filers := cluster.getFilers(filerGroup, true)
+		if existingNode, found := filers.filers[address]; found {
 			existingNode.counter++
 			return nil
 		}
-		cluster.filers[address] = &ClusterNode{
+		filers.filers[address] = &ClusterNode{
 			Address:   address,
 			Version:   version,
 			counter:   1,
 			createdTs: time.Now(),
 		}
-		return cluster.ensureFilerLeaders(true, nodeType, address)
+		return cluster.ensureFilerLeaders(filers, true, filerGroup, nodeType, address)
 	case BrokerType:
 		cluster.brokersLock.Lock()
 		defer cluster.brokersLock.Unlock()
@@ -81,22 +98,34 @@ func (cluster *Cluster) AddClusterNode(nodeType string, address pb.ServerAddress
 			},
 		}
 	case MasterType:
+		return []*master_pb.KeepConnectedResponse{
+			{
+				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
+					NodeType: nodeType,
+					Address:  string(address),
+					IsAdd:    true,
+				},
+			},
+		}
 	}
 	return nil
 }

-func (cluster *Cluster) RemoveClusterNode(nodeType string, address pb.ServerAddress) []*master_pb.KeepConnectedResponse {
+func (cluster *Cluster) RemoveClusterNode(ns string, nodeType string, address pb.ServerAddress) []*master_pb.KeepConnectedResponse {
+	filerGroup := FilerGroup(ns)
 	switch nodeType {
 	case FilerType:
-		cluster.filersLock.Lock()
-		defer cluster.filersLock.Unlock()
-		if existingNode, found := cluster.filers[address]; !found {
+		filers := cluster.getFilers(filerGroup, false)
+		if filers == nil {
+			return nil
+		}
+		if existingNode, found := filers.filers[address]; !found {
 			return nil
 		} else {
 			existingNode.counter--
 			if existingNode.counter <= 0 {
-				delete(cluster.filers, address)
-				return cluster.ensureFilerLeaders(false, nodeType, address)
+				delete(filers.filers, address)
+				return cluster.ensureFilerLeaders(filers, false, filerGroup, nodeType, address)
 			}
 		}
 	case BrokerType:
@@ -120,16 +149,29 @@ func (cluster *Cluster) RemoveClusterNode(nodeType string, address pb.ServerAddr
 			}
 		}
 	case MasterType:
+		return []*master_pb.KeepConnectedResponse{
+			{
+				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
+					NodeType: nodeType,
+					Address:  string(address),
+					IsAdd:    false,
+				},
+			},
+		}
 	}
 	return nil
 }

-func (cluster *Cluster) ListClusterNode(nodeType string) (nodes []*ClusterNode) {
+func (cluster *Cluster) ListClusterNode(filerGroup FilerGroup, nodeType string) (nodes []*ClusterNode) {
 	switch nodeType {
 	case FilerType:
+		filers := cluster.getFilers(filerGroup, false)
+		if filers == nil {
+			return
+		}
 		cluster.filersLock.RLock()
 		defer cluster.filersLock.RUnlock()
-		for _, node := range cluster.filers {
+		for _, node := range filers.filers {
 			nodes = append(nodes, node)
 		}
 	case BrokerType:
@@ -143,41 +185,48 @@ func (cluster *Cluster) ListClusterNode(nodeType string) (nodes []*ClusterNode)
 	return
 }

-func (cluster *Cluster) IsOneLeader(address pb.ServerAddress) bool {
-	return cluster.filerLeaders.isOneLeader(address)
+func (cluster *Cluster) IsOneLeader(filerGroup FilerGroup, address pb.ServerAddress) bool {
+	filers := cluster.getFilers(filerGroup, false)
+	if filers == nil {
+		return false
+	}
+	return filers.leaders.isOneLeader(address)
 }

-func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address pb.ServerAddress) (result []*master_pb.KeepConnectedResponse) {
+func (cluster *Cluster) ensureFilerLeaders(filers *Filers, isAdd bool, filerGroup FilerGroup, nodeType string, address pb.ServerAddress) (result []*master_pb.KeepConnectedResponse) {
 	if isAdd {
-		if cluster.filerLeaders.addLeaderIfVacant(address) {
+		if filers.leaders.addLeaderIfVacant(address) {
 			// has added the address as one leader
 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
-					Address:  string(address),
-					IsLeader: true,
-					IsAdd:    true,
+					FilerGroup: string(filerGroup),
+					NodeType:   nodeType,
+					Address:    string(address),
+					IsLeader:   true,
+					IsAdd:      true,
 				},
 			})
 		} else {
 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
-					Address:  string(address),
-					IsLeader: false,
-					IsAdd:    true,
+					FilerGroup: string(filerGroup),
+					NodeType:   nodeType,
+					Address:    string(address),
+					IsLeader:   false,
+					IsAdd:      true,
 				},
 			})
 		}
 	} else {
-		if cluster.filerLeaders.removeLeaderIfExists(address) {
+		if filers.leaders.removeLeaderIfExists(address) {

 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
-					Address:  string(address),
-					IsLeader: true,
-					IsAdd:    false,
+					FilerGroup: string(filerGroup),
+					NodeType:   nodeType,
+					Address:    string(address),
+					IsLeader:   true,
+					IsAdd:      false,
 				},
 			})

@@ -185,8 +234,8 @@ func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address
 			var shortestDuration int64 = math.MaxInt64
 			now := time.Now()
 			var candidateAddress pb.ServerAddress
-			for _, node := range cluster.filers {
-				if cluster.filerLeaders.isOneLeader(node.Address) {
+			for _, node := range filers.filers {
+				if filers.leaders.isOneLeader(node.Address) {
 					continue
 				}
 				duration := now.Sub(node.createdTs).Nanoseconds()
@@ -196,7 +245,7 @@ func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address
 				}
 			}
 			if candidateAddress != "" {
-				cluster.filerLeaders.addLeaderIfVacant(candidateAddress)
+				filers.leaders.addLeaderIfVacant(candidateAddress)
 				// added a new leader
 				result = append(result, &master_pb.KeepConnectedResponse{
 					ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
@@ -210,10 +259,11 @@ func (cluster *Cluster) ensureFilerLeaders(isAdd bool, nodeType string, address
 		} else {
 			result = append(result, &master_pb.KeepConnectedResponse{
 				ClusterNodeUpdate: &master_pb.ClusterNodeUpdate{
-					NodeType: nodeType,
-					Address:  string(address),
-					IsLeader: false,
-					IsAdd:    false,
+					FilerGroup: string(filerGroup),
+					NodeType:   nodeType,
+					Address:    string(address),
+					IsLeader:   false,
+					IsAdd:      false,
 				},
 			})
 		}
@@ -9,39 +9,39 @@ import (
 func TestClusterAddRemoveNodes(t *testing.T) {
 	c := NewCluster()

-	c.AddClusterNode("filer", pb.ServerAddress("111:1"), "23.45")
-	c.AddClusterNode("filer", pb.ServerAddress("111:2"), "23.45")
+	c.AddClusterNode("", "filer", pb.ServerAddress("111:1"), "23.45")
+	c.AddClusterNode("", "filer", pb.ServerAddress("111:2"), "23.45")
 	assert.Equal(t, []pb.ServerAddress{
 		pb.ServerAddress("111:1"),
 		pb.ServerAddress("111:2"),
-	}, c.filerLeaders.GetLeaders())
+	}, c.getFilers("", false).leaders.GetLeaders())

-	c.AddClusterNode("filer", pb.ServerAddress("111:3"), "23.45")
-	c.AddClusterNode("filer", pb.ServerAddress("111:4"), "23.45")
+	c.AddClusterNode("", "filer", pb.ServerAddress("111:3"), "23.45")
+	c.AddClusterNode("", "filer", pb.ServerAddress("111:4"), "23.45")
 	assert.Equal(t, []pb.ServerAddress{
 		pb.ServerAddress("111:1"),
 		pb.ServerAddress("111:2"),
 		pb.ServerAddress("111:3"),
-	}, c.filerLeaders.GetLeaders())
+	}, c.getFilers("", false).leaders.GetLeaders())

-	c.AddClusterNode("filer", pb.ServerAddress("111:5"), "23.45")
-	c.AddClusterNode("filer", pb.ServerAddress("111:6"), "23.45")
-	c.RemoveClusterNode("filer", pb.ServerAddress("111:4"))
+	c.AddClusterNode("", "filer", pb.ServerAddress("111:5"), "23.45")
+	c.AddClusterNode("", "filer", pb.ServerAddress("111:6"), "23.45")
+	c.RemoveClusterNode("", "filer", pb.ServerAddress("111:4"))
 	assert.Equal(t, []pb.ServerAddress{
 		pb.ServerAddress("111:1"),
 		pb.ServerAddress("111:2"),
 		pb.ServerAddress("111:3"),
-	}, c.filerLeaders.GetLeaders())
+	}, c.getFilers("", false).leaders.GetLeaders())

 	// remove oldest
-	c.RemoveClusterNode("filer", pb.ServerAddress("111:1"))
+	c.RemoveClusterNode("", "filer", pb.ServerAddress("111:1"))
 	assert.Equal(t, []pb.ServerAddress{
 		pb.ServerAddress("111:6"),
 		pb.ServerAddress("111:2"),
 		pb.ServerAddress("111:3"),
-	}, c.filerLeaders.GetLeaders())
+	}, c.getFilers("", false).leaders.GetLeaders())

 	// remove oldest
-	c.RemoveClusterNode("filer", pb.ServerAddress("111:1"))
+	c.RemoveClusterNode("", "filer", pb.ServerAddress("111:1"))

 }
@@ -129,7 +129,7 @@ func runBenchmark(cmd *Command, args []string) bool {
 		defer pprof.StopCPUProfile()
 	}

-	b.masterClient = wdclient.NewMasterClient(b.grpcDialOption, "client", "", "", pb.ServerAddresses(*b.masters).ToAddressMap())
+	b.masterClient = wdclient.NewMasterClient(b.grpcDialOption, "", "client", "", "", pb.ServerAddresses(*b.masters).ToAddressMap())
 	go b.masterClient.KeepConnectedToMaster()
 	b.masterClient.WaitUntilConnected()

@@ -5,6 +5,7 @@ import (
 	"net"
 	"net/http"
 	"os"
+	"runtime"
 	"time"

 	"google.golang.org/grpc/reflection"
@@ -36,6 +37,7 @@ type FilerOptions struct {
 	port                    *int
 	portGrpc                *int
 	publicPort              *int
+	filerGroup              *string
 	collection              *string
 	defaultReplicaPlacement *string
 	disableDirListing       *bool
@@ -58,6 +60,7 @@ type FilerOptions struct {
 func init() {
 	cmdFiler.Run = runFiler // break init cycle
 	f.mastersString = cmdFiler.Flag.String("master", "localhost:9333", "comma-separated master servers")
+	f.filerGroup = cmdFiler.Flag.String("filerGroup", "", "share metadata with other filers in the same filerGroup")
 	f.collection = cmdFiler.Flag.String("collection", "", "all data will be stored in this default collection")
 	f.ip = cmdFiler.Flag.String("ip", util.DetectedHostAddress(), "filer server http listen ip address")
 	f.bindIp = cmdFiler.Flag.String("ip.bind", "", "ip address to bind to. If empty, default to same as -ip option.")
@@ -200,6 +203,7 @@ func (fo *FilerOptions) startFiler() {

 	fs, nfs_err := weed_server.NewFilerServer(defaultMux, publicVolumeMux, &weed_server.FilerOption{
 		Masters:               fo.masters,
+		FilerGroup:            *fo.filerGroup,
 		Collection:            *fo.collection,
 		DefaultReplication:    *fo.defaultReplicaPlacement,
 		DisableDirListing:     *fo.disableDirListing,
@@ -248,18 +252,6 @@ func (fo *FilerOptions) startFiler() {
 		glog.Fatalf("Filer listener error: %v", e)
 	}

-	// start on local unix socket
-	if *fo.localSocket == "" {
-		*fo.localSocket = fmt.Sprintf("/tmp/seaweefs-filer-%d.sock", *fo.port)
-		if err := os.Remove(*fo.localSocket); err != nil && !os.IsNotExist(err) {
-			glog.Fatalf("Failed to remove %s, error: %s", *fo.localSocket, err.Error())
-		}
-	}
-	filerSocketListener, err := net.Listen("unix", *fo.localSocket)
-	if err != nil {
-		glog.Fatalf("Failed to listen on %s: %v", *fo.localSocket, err)
-	}
-
 	// starting grpc server
 	grpcPort := *fo.portGrpc
 	grpcL, grpcLocalL, err := util.NewIpAndLocalListeners(*fo.bindIp, grpcPort, 0)
@@ -275,9 +267,22 @@ func (fo *FilerOptions) startFiler() {
 	go grpcS.Serve(grpcL)

 	httpS := &http.Server{Handler: defaultMux}
-	go func() {
-		httpS.Serve(filerSocketListener)
-	}()
+	if runtime.GOOS != "windows" {
+		if *fo.localSocket == "" {
+			*fo.localSocket = fmt.Sprintf("/tmp/seaweefs-filer-%d.sock", *fo.port)
+			if err := os.Remove(*fo.localSocket); err != nil && !os.IsNotExist(err) {
+				glog.Fatalf("Failed to remove %s, error: %s", *fo.localSocket, err.Error())
+			}
+		}
+		go func() {
+			// start on local unix socket
+			filerSocketListener, err := net.Listen("unix", *fo.localSocket)
+			if err != nil {
+				glog.Fatalf("Failed to listen on %s: %v", *fo.localSocket, err)
+			}
+			httpS.Serve(filerSocketListener)
+		}()
+	}
 	if filerLocalListener != nil {
 		go func() {
 			if err := httpS.Serve(filerLocalListener); err != nil {
@@ -71,7 +71,7 @@ var cmdFilerCopy = &Command{
  It can copy one or a list of files or folders.

  If copying a whole folder recursively:
-  All files under the folder and subfolders will be copyed.
+  All files under the folder and sub folders will be copied.
  Optional parameter "-include" allows you to specify the file name patterns.

  If "maxMB" is set to a positive number, files larger than it would be split into chunks.
@@ -1,12 +1,9 @@
 package command

 import (
-	"context"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/pb"
 	"github.com/golang/protobuf/jsonpb"
-	jsoniter "github.com/json-iterator/go"
-	elastic "github.com/olivere/elastic/v7"
 	"os"
 	"path/filepath"
 	"strings"
@@ -124,72 +121,3 @@ func runFilerMetaTail(cmd *Command, args []string) bool {

 	return true
 }
-
-type EsDocument struct {
-	Dir         string `json:"dir,omitempty"`
-	Name        string `json:"name,omitempty"`
-	IsDirectory bool   `json:"isDir,omitempty"`
-	Size        uint64 `json:"size,omitempty"`
-	Uid         uint32 `json:"uid,omitempty"`
-	Gid         uint32 `json:"gid,omitempty"`
-	UserName    string `json:"userName,omitempty"`
-	Collection  string `json:"collection,omitempty"`
-	Crtime      int64  `json:"crtime,omitempty"`
-	Mtime       int64  `json:"mtime,omitempty"`
-	Mime        string `json:"mime,omitempty"`
-}
-
-func toEsEntry(event *filer_pb.EventNotification) (*EsDocument, string) {
-	entry := event.NewEntry
-	dir, name := event.NewParentPath, entry.Name
-	id := util.Md5String([]byte(util.NewFullPath(dir, name)))
-	esEntry := &EsDocument{
-		Dir:         dir,
-		Name:        name,
-		IsDirectory: entry.IsDirectory,
-		Size:        entry.Attributes.FileSize,
-		Uid:         entry.Attributes.Uid,
-		Gid:         entry.Attributes.Gid,
-		UserName:    entry.Attributes.UserName,
-		Collection:  entry.Attributes.Collection,
-		Crtime:      entry.Attributes.Crtime,
-		Mtime:       entry.Attributes.Mtime,
-		Mime:        entry.Attributes.Mime,
-	}
-	return esEntry, id
-}
-
-func sendToElasticSearchFunc(servers string, esIndex string) (func(resp *filer_pb.SubscribeMetadataResponse) error, error) {
-	options := []elastic.ClientOptionFunc{}
-	options = append(options, elastic.SetURL(strings.Split(servers, ",")...))
-	options = append(options, elastic.SetSniff(false))
-	options = append(options, elastic.SetHealthcheck(false))
-	client, err := elastic.NewClient(options...)
-	if err != nil {
-		return nil, err
-	}
-	return func(resp *filer_pb.SubscribeMetadataResponse) error {
-		event := resp.EventNotification
-		if event.OldEntry != nil &&
-			(event.NewEntry == nil || resp.Directory != event.NewParentPath || event.OldEntry.Name != event.NewEntry.Name) {
-			// delete or not update the same file
-			dir, name := resp.Directory, event.OldEntry.Name
-			id := util.Md5String([]byte(util.NewFullPath(dir, name)))
-			println("delete", id)
-			_, err := client.Delete().Index(esIndex).Id(id).Do(context.Background())
-			return err
-		}
-		if event.NewEntry != nil {
-			// add a new file or update the same file
-			esEntry, id := toEsEntry(event)
-			value, err := jsoniter.Marshal(esEntry)
-			if err != nil {
-				return err
-			}
-			println(string(value))
-			_, err = client.Index().Index(esIndex).Id(id).BodyJson(string(value)).Do(context.Background())
-			return err
-		}
-		return nil
-	}, nil
-}
@@ -0,0 +1,82 @@
+//go:build elastic
+// +build elastic
+
+package command
+
+import (
+	"context"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	jsoniter "github.com/json-iterator/go"
+	elastic "github.com/olivere/elastic/v7"
+	"strings"
+)
+
+type EsDocument struct {
+	Dir         string `json:"dir,omitempty"`
+	Name        string `json:"name,omitempty"`
+	IsDirectory bool   `json:"isDir,omitempty"`
+	Size        uint64 `json:"size,omitempty"`
+	Uid         uint32 `json:"uid,omitempty"`
+	Gid         uint32 `json:"gid,omitempty"`
+	UserName    string `json:"userName,omitempty"`
+	Collection  string `json:"collection,omitempty"`
+	Crtime      int64  `json:"crtime,omitempty"`
+	Mtime       int64  `json:"mtime,omitempty"`
+	Mime        string `json:"mime,omitempty"`
+}
+
+func toEsEntry(event *filer_pb.EventNotification) (*EsDocument, string) {
+	entry := event.NewEntry
+	dir, name := event.NewParentPath, entry.Name
+	id := util.Md5String([]byte(util.NewFullPath(dir, name)))
+	esEntry := &EsDocument{
+		Dir:         dir,
+		Name:        name,
+		IsDirectory: entry.IsDirectory,
+		Size:        entry.Attributes.FileSize,
+		Uid:         entry.Attributes.Uid,
+		Gid:         entry.Attributes.Gid,
+		UserName:    entry.Attributes.UserName,
+		Collection:  entry.Attributes.Collection,
+		Crtime:      entry.Attributes.Crtime,
+		Mtime:       entry.Attributes.Mtime,
+		Mime:        entry.Attributes.Mime,
+	}
+	return esEntry, id
+}
+
+func sendToElasticSearchFunc(servers string, esIndex string) (func(resp *filer_pb.SubscribeMetadataResponse) error, error) {
+	options := []elastic.ClientOptionFunc{}
+	options = append(options, elastic.SetURL(strings.Split(servers, ",")...))
+	options = append(options, elastic.SetSniff(false))
+	options = append(options, elastic.SetHealthcheck(false))
+	client, err := elastic.NewClient(options...)
+	if err != nil {
+		return nil, err
+	}
+	return func(resp *filer_pb.SubscribeMetadataResponse) error {
+		event := resp.EventNotification
+		if event.OldEntry != nil &&
+			(event.NewEntry == nil || resp.Directory != event.NewParentPath || event.OldEntry.Name != event.NewEntry.Name) {
+			// delete or not update the same file
+			dir, name := resp.Directory, event.OldEntry.Name
+			id := util.Md5String([]byte(util.NewFullPath(dir, name)))
+			println("delete", id)
+			_, err := client.Delete().Index(esIndex).Id(id).Do(context.Background())
+			return err
+		}
+		if event.NewEntry != nil {
+			// add a new file or update the same file
+			esEntry, id := toEsEntry(event)
+			value, err := jsoniter.Marshal(esEntry)
+			if err != nil {
+				return err
+			}
+			println(string(value))
+			_, err = client.Index().Index(esIndex).Id(id).BodyJson(string(value)).Do(context.Background())
+			return err
+		}
+		return nil
+	}, nil
+}
@@ -0,0 +1,14 @@
+//go:build !elastic
+// +build !elastic
+
+package command
+
+import (
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+)
+
+func sendToElasticSearchFunc(servers string, esIndex string) (func(resp *filer_pb.SubscribeMetadataResponse) error, error) {
+	return func(resp *filer_pb.SubscribeMetadataResponse) error {
+		return nil
+	}, nil
+}
@@ -267,7 +267,10 @@ func genProcessFunction(sourcePath string, targetPath string, dataSink sink.Repl
 				return nil
 			}
 			key := buildKey(dataSink, message, targetPath, sourceOldKey, sourcePath)
-			return dataSink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
+			if !dataSink.IsIncremental() {
+				return dataSink.DeleteEntry(key, message.OldEntry.IsDirectory, message.DeleteChunks, message.Signatures)
+			}
+			return nil
 		}

 		// handle new entries
@@ -15,6 +15,7 @@ import (
 	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/localsink"
 	_ "github.com/chrislusf/seaweedfs/weed/replication/sink/s3sink"

+	_ "github.com/chrislusf/seaweedfs/weed/filer/arangodb"
 	_ "github.com/chrislusf/seaweedfs/weed/filer/cassandra"
 	_ "github.com/chrislusf/seaweedfs/weed/filer/elastic/v7"
 	_ "github.com/chrislusf/seaweedfs/weed/filer/etcd"
@@ -1,9 +1,9 @@
 package command

 import (
+	"golang.org/x/exp/slices"
 	"net/http"
 	"os"
-	"sort"
 	"strings"
 	"time"

@@ -48,6 +48,8 @@ type MasterOptions struct {
 	metricsHttpPort    *int
 	heartbeatInterval  *time.Duration
 	electionTimeout    *time.Duration
+	raftHashicorp      *bool
+	raftBootstrap      *bool
 }

 func init() {
@@ -71,6 +73,8 @@ func init() {
 	m.raftResumeState = cmdMaster.Flag.Bool("resumeState", false, "resume previous state on start master server")
 	m.heartbeatInterval = cmdMaster.Flag.Duration("heartbeatInterval", 300*time.Millisecond, "heartbeat interval of master servers, and will be randomly multiplied by [1, 1.25)")
 	m.electionTimeout = cmdMaster.Flag.Duration("electionTimeout", 10*time.Second, "election timeout of master servers")
+	m.raftHashicorp = cmdMaster.Flag.Bool("raftHashicorp", false, "use hashicorp raft")
+	m.raftBootstrap = cmdMaster.Flag.Bool("raftBootstrap", false, "Whether to bootstrap the Raft cluster")
 }

 var cmdMaster = &Command{
@@ -156,13 +160,25 @@ func startMaster(masterOption MasterOptions, masterWhiteList []string) {
 		RaftResumeState:   *masterOption.raftResumeState,
 		HeartbeatInterval: *masterOption.heartbeatInterval,
 		ElectionTimeout:   *masterOption.electionTimeout,
+		RaftBootstrap:     *m.raftBootstrap,
 	}
-	raftServer, err := weed_server.NewRaftServer(raftServerOption)
-	if raftServer == nil {
-		glog.Fatalf("please verify %s is writable, see https://github.com/chrislusf/seaweedfs/issues/717: %s", *masterOption.metaFolder, err)
+	var raftServer *weed_server.RaftServer
+	var err error
+	if *m.raftHashicorp {
+		if raftServer, err = weed_server.NewHashicorpRaftServer(raftServerOption); err != nil {
+			glog.Fatalf("NewHashicorpRaftServer: %s", err)
+		}
+	} else {
+		raftServer, err = weed_server.NewRaftServer(raftServerOption)
+		if raftServer == nil {
+			glog.Fatalf("please verify %s is writable, see https://github.com/chrislusf/seaweedfs/issues/717: %s", *masterOption.metaFolder, err)
+		}
 	}
 	ms.SetRaftServer(raftServer)
 	r.HandleFunc("/cluster/status", raftServer.StatusHandler).Methods("GET")
+	if *m.raftHashicorp {
+		r.HandleFunc("/raft/stats", raftServer.StatsRaftHandler).Methods("GET")
+	}
 	// starting grpc server
 	grpcPort := *masterOption.portGrpc
 	grpcL, grpcLocalL, err := util.NewIpAndLocalListeners(*masterOption.ipBind, grpcPort, 0)
@@ -171,7 +187,11 @@ func startMaster(masterOption MasterOptions, masterWhiteList []string) {
 	}
 	grpcS := pb.NewGrpcServer(security.LoadServerTLS(util.GetViper(), "grpc.master"))
 	master_pb.RegisterSeaweedServer(grpcS, ms)
-	protobuf.RegisterRaftServer(grpcS, raftServer)
+	if *m.raftHashicorp {
+		raftServer.TransportManager.Register(grpcS)
+	} else {
+		protobuf.RegisterRaftServer(grpcS, raftServer)
+	}
 	reflection.Register(grpcS)
 	glog.V(0).Infof("Start Seaweed Master %s grpc server at %s:%d", util.Version(), *masterOption.ipBind, grpcPort)
 	if grpcLocalL != nil {
@@ -179,14 +199,17 @@ func startMaster(masterOption MasterOptions, masterWhiteList []string) {
 	}
 	go grpcS.Serve(grpcL)

-	go func() {
-		time.Sleep(1500 * time.Millisecond)
-		if ms.Topo.RaftServer.Leader() == "" && ms.Topo.RaftServer.IsLogEmpty() && isTheFirstOne(myMasterAddress, peers) {
-			if ms.MasterClient.FindLeaderFromOtherPeers(myMasterAddress) == "" {
-				raftServer.DoJoinCommand()
+	timeSleep := 1500 * time.Millisecond
+	if !*m.raftHashicorp {
+		go func() {
+			time.Sleep(timeSleep)
+			if ms.Topo.RaftServer.Leader() == "" && ms.Topo.RaftServer.IsLogEmpty() && isTheFirstOne(myMasterAddress, peers) {
+				if ms.MasterClient.FindLeaderFromOtherPeers(myMasterAddress) == "" {
+					raftServer.DoJoinCommand()
+				}
 			}
-		}
-	}()
+		}()
+	}

 	go ms.MasterClient.KeepConnectedToMaster()

@@ -251,8 +274,8 @@ func checkPeers(masterIp string, masterPort int, masterGrpcPort int, peers strin
 }

 func isTheFirstOne(self pb.ServerAddress, peers []pb.ServerAddress) bool {
-	sort.Slice(peers, func(i, j int) bool {
-		return strings.Compare(string(peers[i]), string(peers[j])) < 0
+	slices.SortFunc(peers, func(a, b pb.ServerAddress) bool {
+		return strings.Compare(string(a), string(b)) < 0
 	})
 	if len(peers) <= 0 {
 		return true
@@ -108,9 +108,9 @@ func RunMount(option *MountOptions, umask os.FileMode) bool {
 			mountDirHash = -mountDirHash
 		}
 		*option.localSocket = fmt.Sprintf("/tmp/seaweefs-mount-%d.sock", mountDirHash)
-		if err := os.Remove(*option.localSocket); err != nil && !os.IsNotExist(err) {
-			glog.Fatalf("Failed to remove %s, error: %s", *option.localSocket, err.Error())
-		}
+	}
+	if err := os.Remove(*option.localSocket); err != nil && !os.IsNotExist(err) {
+		glog.Fatalf("Failed to remove %s, error: %s", *option.localSocket, err.Error())
 	}
 	montSocketListener, err := net.Listen("unix", *option.localSocket)
 	if err != nil {
@@ -285,6 +285,16 @@ healthcheck_enabled = false
 index.max_result_window = 10000


+[arangodb] # in development dont use it
+enabled = false
+db_name = "seaweedfs"
+servers=["http://localhost:8529"] # list of servers to connect to
+# only basic auth supported for now
+username=""
+password=""
+# skip tls cert validation
+insecure_skip_verify = true
+

 ##########################
 ##########################
@@ -36,6 +36,7 @@ aws_secret_access_key = ""     # if empty, loads from the shared credentials fil
 region = "us-east-2"
 bucket = "your_bucket_name"    # an existing bucket
 endpoint = ""
+storage_class = "STANDARD_IA"

 # create this number of logical volumes if no more writable volumes
 # count_x means how many copies of data.
@@ -101,6 +101,7 @@ func init() {
 	masterOptions.heartbeatInterval = cmdServer.Flag.Duration("master.heartbeatInterval", 300*time.Millisecond, "heartbeat interval of master servers, and will be randomly multiplied by [1, 1.25)")
 	masterOptions.electionTimeout = cmdServer.Flag.Duration("master.electionTimeout", 10*time.Second, "election timeout of master servers")

+	filerOptions.filerGroup = cmdServer.Flag.String("filer.filerGroup", "", "share metadata with other filers in the same filerGroup")
 	filerOptions.collection = cmdServer.Flag.String("filer.collection", "", "all data will be stored in this collection")
 	filerOptions.port = cmdServer.Flag.Int("filer.port", 8888, "filer server http listen port")
 	filerOptions.portGrpc = cmdServer.Flag.Int("filer.port.grpc", 0, "filer server grpc listen port")
@@ -18,6 +18,7 @@ var (
 func init() {
 	cmdShell.Run = runShell // break init cycle
 	shellOptions.Masters = cmdShell.Flag.String("master", "", "comma-separated master servers, e.g. localhost:9333")
+	shellOptions.FilerGroup = cmdShell.Flag.String("filerGroup", "", "filerGroup for the filers")
 	shellInitialFiler = cmdShell.Flag.String("filer", "", "filer host and port, e.g. localhost:8888")
 	shellCluster = cmdShell.Flag.String("cluster", "", "cluster defined in shell.toml")
 }
@@ -0,0 +1,347 @@
+package arangodb
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/arangodb/go-driver"
+	"github.com/arangodb/go-driver/http"
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+func init() {
+	filer.Stores = append(filer.Stores, &ArangodbStore{})
+}
+
+var (
+	BUCKET_PREFIX      = "/buckets"
+	DEFAULT_COLLECTION = "seaweed_no_bucket"
+	KVMETA_COLLECTION  = "seaweed_kvmeta"
+)
+
+type ArangodbStore struct {
+	connect      driver.Connection
+	client       driver.Client
+	database     driver.Database
+	kvCollection driver.Collection
+
+	buckets map[string]driver.Collection
+	mu      sync.RWMutex
+
+	databaseName string
+}
+
+type Model struct {
+	Key       string `json:"_key"`
+	Directory string `json:"directory,omitempty"`
+	Name      string `json:"name,omitempty"`
+	Ttl       string `json:"ttl,omitempty"`
+
+	//arangodb does not support binary blobs
+	//we encode byte slice into uint64 slice
+	//see helpers.go
+	Meta []uint64 `json:"meta"`
+}
+
+func (store *ArangodbStore) GetName() string {
+	return "arangodb"
+}
+
+func (store *ArangodbStore) Initialize(configuration util.Configuration, prefix string) (err error) {
+	store.buckets = make(map[string]driver.Collection, 3)
+	store.databaseName = configuration.GetString(prefix + "db_name")
+	return store.connection(configuration.GetStringSlice(prefix+"servers"),
+		configuration.GetString(prefix+"username"),
+		configuration.GetString(prefix+"password"),
+		configuration.GetBool(prefix+"insecure_skip_verify"),
+	)
+}
+
+func (store *ArangodbStore) connection(uris []string, user string, pass string, insecure bool) (err error) {
+	ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
+
+	store.connect, err = http.NewConnection(http.ConnectionConfig{
+		Endpoints: uris,
+		TLSConfig: &tls.Config{
+			InsecureSkipVerify: insecure,
+		},
+	})
+	if err != nil {
+		return err
+	}
+	store.client, err = driver.NewClient(driver.ClientConfig{
+		Connection:     store.connect,
+		Authentication: driver.BasicAuthentication(user, pass),
+	})
+	if err != nil {
+		return err
+	}
+	ok, err := store.client.DatabaseExists(ctx, store.databaseName)
+	if err != nil {
+		return err
+	}
+	if ok {
+		store.database, err = store.client.Database(ctx, store.databaseName)
+	} else {
+		store.database, err = store.client.CreateDatabase(ctx, store.databaseName, &driver.CreateDatabaseOptions{})
+	}
+	if err != nil {
+		return err
+	}
+	if store.kvCollection, err = store.ensureCollection(ctx, KVMETA_COLLECTION); err != nil {
+		return err
+	}
+	return err
+}
+
+type key int
+
+const (
+	transactionKey key = 0
+)
+
+func (store *ArangodbStore) BeginTransaction(ctx context.Context) (context.Context, error) {
+	keys := make([]string, 0, len(store.buckets)+1)
+	for k := range store.buckets {
+		keys = append(keys, k)
+	}
+	keys = append(keys, store.kvCollection.Name())
+	txn, err := store.database.BeginTransaction(ctx, driver.TransactionCollections{
+		Exclusive: keys,
+	}, &driver.BeginTransactionOptions{})
+	if err != nil {
+		return nil, err
+	}
+
+	return context.WithValue(ctx, transactionKey, txn), nil
+}
+
+func (store *ArangodbStore) CommitTransaction(ctx context.Context) error {
+	val := ctx.Value(transactionKey)
+	cast, ok := val.(driver.TransactionID)
+	if !ok {
+		return fmt.Errorf("txn cast fail %s:", val)
+	}
+	err := store.database.CommitTransaction(ctx, cast, &driver.CommitTransactionOptions{})
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (store *ArangodbStore) RollbackTransaction(ctx context.Context) error {
+	val := ctx.Value(transactionKey)
+	cast, ok := val.(driver.TransactionID)
+	if !ok {
+		return fmt.Errorf("txn cast fail %s:", val)
+	}
+	err := store.database.AbortTransaction(ctx, cast, &driver.AbortTransactionOptions{})
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (store *ArangodbStore) InsertEntry(ctx context.Context, entry *filer.Entry) (err error) {
+	dir, name := entry.FullPath.DirAndName()
+	meta, err := entry.EncodeAttributesAndChunks()
+	if err != nil {
+		return fmt.Errorf("encode %s: %s", entry.FullPath, err)
+	}
+
+	if len(entry.Chunks) > 50 {
+		meta = util.MaybeGzipData(meta)
+	}
+	model := &Model{
+		Key:       hashString(string(entry.FullPath)),
+		Directory: dir,
+		Name:      name,
+		Meta:      bytesToArray(meta),
+	}
+	if entry.TtlSec > 0 {
+		model.Ttl = time.Now().Add(time.Second * time.Duration(entry.TtlSec)).Format(time.RFC3339)
+	} else {
+		model.Ttl = ""
+	}
+
+	targetCollection, err := store.extractBucketCollection(ctx, entry.FullPath)
+	if err != nil {
+		return err
+	}
+	_, err = targetCollection.CreateDocument(ctx, model)
+	if driver.IsConflict(err) {
+		return store.UpdateEntry(ctx, entry)
+	}
+
+	if err != nil {
+		return fmt.Errorf("InsertEntry %s: %v", entry.FullPath, err)
+	}
+
+	return nil
+
+}
+
+func (store *ArangodbStore) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) {
+	dir, name := entry.FullPath.DirAndName()
+	meta, err := entry.EncodeAttributesAndChunks()
+	if err != nil {
+		return fmt.Errorf("encode %s: %s", entry.FullPath, err)
+	}
+
+	if len(entry.Chunks) > 50 {
+		meta = util.MaybeGzipData(meta)
+	}
+	model := &Model{
+		Key:       hashString(string(entry.FullPath)),
+		Directory: dir,
+		Name:      name,
+		Meta:      bytesToArray(meta),
+	}
+	if entry.TtlSec > 0 {
+		model.Ttl = time.Now().Add(time.Duration(entry.TtlSec) * time.Second).Format(time.RFC3339)
+	} else {
+		model.Ttl = "none"
+	}
+	targetCollection, err := store.extractBucketCollection(ctx, entry.FullPath)
+	if err != nil {
+		return err
+	}
+	_, err = targetCollection.UpdateDocument(ctx, model.Key, model)
+	if err != nil {
+		return fmt.Errorf("UpdateEntry %s: %v", entry.FullPath, err)
+	}
+
+	return nil
+}
+
+func (store *ArangodbStore) FindEntry(ctx context.Context, fullpath util.FullPath) (entry *filer.Entry, err error) {
+	var data Model
+	targetCollection, err := store.extractBucketCollection(ctx, fullpath)
+	if err != nil {
+		return nil, err
+	}
+	_, err = targetCollection.ReadDocument(ctx, hashString(string(fullpath)), &data)
+	if err != nil {
+		if driver.IsNotFound(err) {
+			return nil, filer_pb.ErrNotFound
+		}
+		glog.Errorf("find %s: %v", fullpath, err)
+		return nil, filer_pb.ErrNotFound
+	}
+	if len(data.Meta) == 0 {
+		return nil, filer_pb.ErrNotFound
+	}
+	entry = &filer.Entry{
+		FullPath: fullpath,
+	}
+	err = entry.DecodeAttributesAndChunks(util.MaybeDecompressData(arrayToBytes(data.Meta)))
+	if err != nil {
+		return entry, fmt.Errorf("decode %s : %v", entry.FullPath, err)
+	}
+
+	return entry, nil
+}
+
+func (store *ArangodbStore) DeleteEntry(ctx context.Context, fullpath util.FullPath) (err error) {
+	targetCollection, err := store.extractBucketCollection(ctx, fullpath)
+	if err != nil {
+		return err
+	}
+	_, err = targetCollection.RemoveDocument(ctx, hashString(string(fullpath)))
+	if err != nil && !driver.IsNotFound(err) {
+		glog.Errorf("find %s: %v", fullpath, err)
+		return fmt.Errorf("delete %s : %v", fullpath, err)
+	}
+	return nil
+}
+
+// this runs in log time
+func (store *ArangodbStore) DeleteFolderChildren(ctx context.Context, fullpath util.FullPath) (err error) {
+	var query string
+	targetCollection, err := store.extractBucketCollection(ctx, fullpath)
+	if err != nil {
+		return err
+	}
+	query = query + fmt.Sprintf(`
+	for d in %s
+	filter starts_with(d.directory, "%s/")  || d.directory == "%s"
+	remove d._key in %s`,
+		targetCollection.Name(),
+		strings.Join(strings.Split(string(fullpath), "/"), ","),
+		string(fullpath),
+		targetCollection.Name(),
+	)
+	cur, err := store.database.Query(ctx, query, nil)
+	if err != nil {
+		return fmt.Errorf("delete %s : %v", fullpath, err)
+	}
+	defer cur.Close()
+	return nil
+}
+
+func (store *ArangodbStore) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
+	return store.ListDirectoryPrefixedEntries(ctx, dirPath, startFileName, includeStartFile, limit, "", eachEntryFunc)
+}
+
+func (store *ArangodbStore) ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
+	targetCollection, err := store.extractBucketCollection(ctx, dirPath+"/")
+	if err != nil {
+		return lastFileName, err
+	}
+	query := "for d in " + targetCollection.Name()
+	if includeStartFile {
+		query = query + " filter d.name >= \"" + startFileName + "\" "
+	} else {
+		query = query + " filter d.name > \"" + startFileName + "\" "
+	}
+	if prefix != "" {
+		query = query + fmt.Sprintf(`&& starts_with(d.name, "%s")`, prefix)
+	}
+	query = query + `
+filter d.directory == @dir
+sort d.name asc
+`
+	if limit > 0 {
+		query = query + "limit " + strconv.Itoa(int(limit))
+	}
+	query = query + "\n return d"
+	cur, err := store.database.Query(ctx, query, map[string]interface{}{"dir": dirPath})
+	if err != nil {
+		return lastFileName, fmt.Errorf("failed to list directory entries: find error: %w", err)
+	}
+	defer cur.Close()
+	for cur.HasMore() {
+		var data Model
+		_, err = cur.ReadDocument(ctx, &data)
+		if err != nil {
+			break
+		}
+		entry := &filer.Entry{
+			FullPath: util.NewFullPath(data.Directory, data.Name),
+		}
+		lastFileName = data.Name
+		converted := arrayToBytes(data.Meta)
+		if decodeErr := entry.DecodeAttributesAndChunks(util.MaybeDecompressData(converted)); decodeErr != nil {
+			err = decodeErr
+			glog.V(0).Infof("list %s : %v", entry.FullPath, err)
+			break
+		}
+
+		if !eachEntryFunc(entry) {
+			break
+		}
+
+	}
+	return lastFileName, err
+}
+
+func (store *ArangodbStore) Shutdown() {
+}
@@ -0,0 +1,40 @@
+package arangodb
+
+import (
+	"context"
+	"github.com/arangodb/go-driver"
+	"time"
+
+	"github.com/chrislusf/seaweedfs/weed/filer"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+)
+
+var _ filer.BucketAware = (*ArangodbStore)(nil)
+
+func (store *ArangodbStore) OnBucketCreation(bucket string) {
+	timeout, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	// create the collection && add to cache
+	_, err := store.ensureBucket(timeout, bucket)
+	if err != nil {
+		glog.Errorf("bucket create %s: %v", bucket, err)
+	}
+}
+func (store *ArangodbStore) OnBucketDeletion(bucket string) {
+	timeout, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	collection, err := store.ensureBucket(timeout, bucket)
+	if err != nil {
+		glog.Errorf("bucket delete %s: %v", bucket, err)
+		return
+	}
+	err = collection.Remove(timeout)
+	if err != nil && !driver.IsNotFound(err) {
+		glog.Errorf("bucket delete %s: %v", bucket, err)
+		return
+	}
+}
+func (store *ArangodbStore) CanDropWholeBucket() bool {
+	return true
+}
@@ -0,0 +1,54 @@
+package arangodb
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/arangodb/go-driver"
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+)
+
+func (store *ArangodbStore) KvPut(ctx context.Context, key []byte, value []byte) (err error) {
+	model := &Model{
+		Key:       hashString(".kvstore." + string(key)),
+		Directory: ".kvstore." + string(key),
+		Meta:      bytesToArray(value),
+	}
+
+	exists, err := store.kvCollection.DocumentExists(ctx, model.Key)
+	if err != nil {
+		return fmt.Errorf("kv put: %v", err)
+	}
+	if exists {
+		_, err = store.kvCollection.UpdateDocument(ctx, model.Key, model)
+	} else {
+		_, err = store.kvCollection.CreateDocument(ctx, model)
+	}
+	if err != nil {
+		return fmt.Errorf("kv put: %v", err)
+	}
+
+	return nil
+}
+func (store *ArangodbStore) KvGet(ctx context.Context, key []byte) (value []byte, err error) {
+	var model Model
+	_, err = store.kvCollection.ReadDocument(ctx, hashString(".kvstore."+string(key)), &model)
+	if driver.IsNotFound(err) {
+		return nil, filer.ErrKvNotFound
+	}
+	if err != nil {
+		glog.Errorf("kv get: %s %v", string(key), err)
+		return nil, filer.ErrKvNotFound
+	}
+	return arrayToBytes(model.Meta), nil
+}
+
+func (store *ArangodbStore) KvDelete(ctx context.Context, key []byte) (err error) {
+	_, err = store.kvCollection.RemoveDocument(ctx, hashString(".kvstore."+string(key)))
+	if err != nil {
+		glog.Errorf("kv del: %v", err)
+		return filer.ErrKvNotFound
+	}
+	return nil
+}
@@ -0,0 +1,136 @@
+package arangodb
+
+import (
+	"context"
+	"crypto/md5"
+	"encoding/binary"
+	"encoding/hex"
+	"io"
+	"strings"
+
+	"github.com/arangodb/go-driver"
+	"github.com/chrislusf/seaweedfs/weed/util"
+)
+
+//convert a string into arango-key safe hex bytes hash
+func hashString(dir string) string {
+	h := md5.New()
+	io.WriteString(h, dir)
+	b := h.Sum(nil)
+	return hex.EncodeToString(b)
+}
+
+// convert slice of bytes into slice of uint64
+// the first uint64 indicates the length in bytes
+func bytesToArray(bs []byte) []uint64 {
+	out := make([]uint64, 0, 2+len(bs)/8)
+	out = append(out, uint64(len(bs)))
+	for len(bs)%8 != 0 {
+		bs = append(bs, 0)
+	}
+	for i := 0; i < len(bs); i = i + 8 {
+		out = append(out, binary.BigEndian.Uint64(bs[i:]))
+	}
+	return out
+}
+
+// convert from slice of uint64 back to bytes
+// if input length is 0 or 1, will return nil
+func arrayToBytes(xs []uint64) []byte {
+	if len(xs) < 2 {
+		return nil
+	}
+	first := xs[0]
+	out := make([]byte, len(xs)*8) // i think this can actually be len(xs)*8-8, but i dont think an extra 8 bytes hurts...
+	for i := 1; i < len(xs); i = i + 1 {
+		binary.BigEndian.PutUint64(out[((i-1)*8):], xs[i])
+	}
+	return out[:first]
+}
+
+// gets the collection the bucket points to from filepath
+func (store *ArangodbStore) extractBucketCollection(ctx context.Context, fullpath util.FullPath) (c driver.Collection, err error) {
+	bucket, _ := extractBucket(fullpath)
+	if bucket == "" {
+		bucket = DEFAULT_COLLECTION
+	}
+	c, err = store.ensureBucket(ctx, bucket)
+	if err != nil {
+		return nil, err
+	}
+	return c, err
+}
+
+// called by extractBucketCollection
+func extractBucket(fullpath util.FullPath) (string, string) {
+	if !strings.HasPrefix(string(fullpath), BUCKET_PREFIX+"/") {
+		return "", string(fullpath)
+	}
+	if strings.Count(string(fullpath), "/") < 3 {
+		return "", string(fullpath)
+	}
+	bucketAndObjectKey := string(fullpath)[len(BUCKET_PREFIX+"/"):]
+	t := strings.Index(bucketAndObjectKey, "/")
+	bucket := bucketAndObjectKey
+	shortPath := "/"
+	if t > 0 {
+		bucket = bucketAndObjectKey[:t]
+		shortPath = string(util.FullPath(bucketAndObjectKey[t:]))
+	}
+	return bucket, shortPath
+}
+
+// get bucket collection from cache. if not exist, creates the buckets collection and grab it
+func (store *ArangodbStore) ensureBucket(ctx context.Context, bucket string) (bc driver.Collection, err error) {
+	var ok bool
+	store.mu.RLock()
+	bc, ok = store.buckets[bucket]
+	store.mu.RUnlock()
+	if ok {
+		return bc, nil
+	}
+	store.mu.Lock()
+	defer store.mu.Unlock()
+	store.buckets[bucket], err = store.ensureCollection(ctx, bucket)
+	if err != nil {
+		return nil, err
+	}
+	return store.buckets[bucket], nil
+}
+
+// creates collection if not exist, ensures indices if not exist
+func (store *ArangodbStore) ensureCollection(ctx context.Context, name string) (c driver.Collection, err error) {
+	ok, err := store.database.CollectionExists(ctx, name)
+	if err != nil {
+		return
+	}
+	if ok {
+		c, err = store.database.Collection(ctx, name)
+	} else {
+		c, err = store.database.CreateCollection(ctx, name, &driver.CreateCollectionOptions{})
+	}
+	if err != nil {
+		return
+	}
+	// ensure indices
+	if _, _, err = c.EnsurePersistentIndex(ctx, []string{"directory", "name"},
+		&driver.EnsurePersistentIndexOptions{
+			Name: "directory_name_multi", Unique: true,
+		}); err != nil {
+		return
+	}
+	if _, _, err = c.EnsurePersistentIndex(ctx, []string{"directory"},
+		&driver.EnsurePersistentIndexOptions{Name: "IDX_directory"}); err != nil {
+		return
+	}
+	if _, _, err = c.EnsureTTLIndex(ctx, "ttl", 1,
+		&driver.EnsureTTLIndexOptions{Name: "IDX_TTL"}); err != nil {
+		return
+	}
+	if _, _, err = c.EnsurePersistentIndex(ctx, []string{"name"}, &driver.EnsurePersistentIndexOptions{
+		Name: "IDX_name",
+	}); err != nil {
+		return
+	}
+	return c, nil
+}
@@ -0,0 +1,52 @@
+##arangodb
+
+database: https://github.com/arangodb/arangodb
+go driver: https://github.com/arangodb/go-driver
+
+options:
+
+```
+[arangodb]
+enabled=true
+db_name="seaweedfs"
+servers=["http://localhost:8529"]
+#basic auth
+user="root"
+pass="test"
+
+# tls settings
+insecure_skip_verify=true
+```
+
+i test using this dev database:
+`docker run -p 8529:8529 -e ARANGO_ROOT_PASSWORD=test arangodb/arangodb:3.9.0`
+
+
+## features i don't personally need but are missing
+ [ ] provide tls cert to arango
+ [ ] authentication that is not basic auth
+ [ ] synchronise endpoint interval config
+ [ ] automatic creation of custom index
+ [ ] configure default arangodb collection sharding rules
+ [ ] configure default arangodb collection replication rules
+
+
+## complexity
+
+ok, so if https://www.arangodb.com/docs/stable/indexing-index-basics.html#persistent-index is correct
+
+O(1)
+- InsertEntry
+- UpdateEntry
+- FindEntry
+- DeleteEntry
+- KvPut
+- KvGet
+- KvDelete
+
+O(log(BUCKET_SIZE))
+- DeleteFolderChildren
+
+O(log(DIRECTORY_SIZE))
+- ListDirectoryEntries
+- ListDirectoryPrefixedEntries
@@ -0,0 +1,9 @@
+/*
+
+Package elastic is for elastic filer store.
+
+The referenced "github.com/olivere/elastic/v7" library is too big when compiled.
+So this is only compiled in "make full_install".
+
+*/
+package elastic
@@ -1,3 +1,6 @@
+//go:build elastic
+// +build elastic
+
 package elastic

 import (
@@ -1,3 +1,6 @@
+//go:build elastic
+// +build elastic
+
 package elastic

 import (
@@ -4,8 +4,8 @@ import (
 	"bytes"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
+	"golang.org/x/exp/slices"
 	"math"
-	"sort"
 	"sync"

 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
@@ -23,6 +23,9 @@ func TotalSize(chunks []*filer_pb.FileChunk) (size uint64) {
 }

 func FileSize(entry *filer_pb.Entry) (size uint64) {
+	if entry == nil || entry.Attributes == nil {
+		return 0
+	}
 	fileSize := entry.Attributes.FileSize
 	if entry.RemoteEntry != nil {
 		if entry.RemoteEntry.RemoteMtime > entry.Attributes.Mtime {
@@ -251,19 +254,17 @@ func NonOverlappingVisibleIntervals(lookupFileIdFn wdclient.LookupFileIdFunction
 	if true {
 		return visibles2, err
 	}
-
-	sort.Slice(chunks, func(i, j int) bool {
-		if chunks[i].Mtime == chunks[j].Mtime {
-			filer_pb.EnsureFid(chunks[i])
-			filer_pb.EnsureFid(chunks[j])
-			if chunks[i].Fid == nil || chunks[j].Fid == nil {
+	slices.SortFunc(chunks, func(a, b *filer_pb.FileChunk) bool {
+		if a.Mtime == b.Mtime {
+			filer_pb.EnsureFid(a)
+			filer_pb.EnsureFid(b)
+			if a.Fid == nil || b.Fid == nil {
 				return true
 			}
-			return chunks[i].Fid.FileKey < chunks[j].Fid.FileKey
+			return a.Fid.FileKey < b.Fid.FileKey
 		}
-		return chunks[i].Mtime < chunks[j].Mtime // keep this to make tests run
+		return a.Mtime < b.Mtime
 	})
-
 	for _, chunk := range chunks {

 		// glog.V(0).Infof("merge [%d,%d)", chunk.Offset, chunk.Offset+int64(chunk.Size))
@@ -1,7 +1,7 @@
 package filer

 import (
-	"sort"
+	"golang.org/x/exp/slices"
 	"testing"

 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -34,11 +34,11 @@ func TestCompactFileChunksRealCase(t *testing.T) {
 }

 func printChunks(name string, chunks []*filer_pb.FileChunk) {
-	sort.Slice(chunks, func(i, j int) bool {
-		if chunks[i].Offset == chunks[j].Offset {
-			return chunks[i].Mtime < chunks[j].Mtime
+	slices.SortFunc(chunks, func(a, b *filer_pb.FileChunk) bool {
+		if a.Offset == b.Offset {
+			return a.Mtime < b.Mtime
 		}
-		return chunks[i].Offset < chunks[j].Offset
+		return a.Offset < b.Offset
 	})
 	for _, chunk := range chunks {
 		glog.V(0).Infof("%s chunk %s [%10d,%10d)", name, chunk.GetFileIdString(), chunk.Offset, chunk.Offset+int64(chunk.Size))
@@ -2,7 +2,7 @@ package filer

 import (
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
-	"sort"
+	"golang.org/x/exp/slices"
 )

 func readResolvedChunks(chunks []*filer_pb.FileChunk) (visibles []VisibleInterval) {
@@ -22,17 +22,14 @@ func readResolvedChunks(chunks []*filer_pb.FileChunk) (visibles []VisibleInterva
 			isStart: false,
 		})
 	}
-	sort.Slice(points, func(i, j int) bool {
-		if points[i].x != points[j].x {
-			return points[i].x < points[j].x
+	slices.SortFunc(points, func(a, b *Point) bool {
+		if a.x != b.x {
+			return a.x < b.x
 		}
-		if points[i].ts != points[j].ts {
-			return points[i].ts < points[j].ts
+		if a.ts != b.ts {
+			return a.ts < b.ts
 		}
-		if !points[i].isStart {
-			return true
-		}
-		return false
+		return !a.isStart
 	})

 	var prevX int64
@@ -49,10 +49,10 @@ type Filer struct {
 	UniqueFileId        uint32
 }

-func NewFiler(masters map[string]pb.ServerAddress, grpcDialOption grpc.DialOption,
-	filerHost pb.ServerAddress, collection string, replication string, dataCenter string, notifyFn func()) *Filer {
+func NewFiler(masters map[string]pb.ServerAddress, grpcDialOption grpc.DialOption, filerHost pb.ServerAddress,
+	filerGroup string, collection string, replication string, dataCenter string, notifyFn func()) *Filer {
 	f := &Filer{
-		MasterClient:        wdclient.NewMasterClient(grpcDialOption, cluster.FilerType, filerHost, dataCenter, masters),
+		MasterClient:        wdclient.NewMasterClient(grpcDialOption, filerGroup, cluster.FilerType, filerHost, dataCenter, masters),
 		fileIdDeletionQueue: util.NewUnboundedQueue(),
 		GrpcDialOption:      grpcDialOption,
 		FilerConf:           NewFilerConf(),
@@ -84,6 +84,7 @@ func (f *Filer) ListExistingPeerUpdates() (existingNodes []*master_pb.ClusterNod
 	if grpcErr := pb.WithMasterClient(false, f.MasterClient.GetMaster(), f.GrpcDialOption, func(client master_pb.SeaweedClient) error {
 		resp, err := client.ListClusterNodes(context.Background(), &master_pb.ListClusterNodesRequest{
 			ClientType: cluster.FilerType,
+			FilerGroup: f.MasterClient.FilerGroup,
 		})

 		glog.V(0).Infof("the cluster has %d filers\n", len(resp.ClusterNodes))
@@ -25,9 +25,7 @@ func (f *Filer) DeleteEntryMetaAndData(ctx context.Context, p util.FullPath, isR
 	if findErr != nil {
 		return findErr
 	}
-
 	isDeleteCollection := f.isBucket(entry)
-
 	if entry.IsDirectory() {
 		// delete the folder children, not including the folder itself
 		err = f.doBatchDeleteFolderMetaAndData(ctx, entry, isRecursive, ignoreRecursiveError, shouldDeleteChunks && !isDeleteCollection, isDeleteCollection, isFromOtherCluster, signatures, func(chunks []*filer_pb.FileChunk) error {
@@ -12,7 +12,7 @@ import (
 )

 func TestCreateAndFind(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDBStore{}
 	store.initialize(dir)
@@ -65,7 +65,7 @@ func TestCreateAndFind(t *testing.T) {
 }

 func TestEmptyRoot(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDBStore{}
 	store.initialize(dir)
@@ -87,7 +87,7 @@ func TestEmptyRoot(t *testing.T) {
 }

 func BenchmarkInsertEntry(b *testing.B) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := b.TempDir()
 	store := &LevelDBStore{}
 	store.initialize(dir)
@@ -9,7 +9,7 @@ import (
 )

 func TestCreateAndFind(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB2Store{}
 	store.initialize(dir, 2)
@@ -62,7 +62,7 @@ func TestCreateAndFind(t *testing.T) {
 }

 func TestEmptyRoot(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB2Store{}
 	store.initialize(dir, 2)
@@ -9,7 +9,7 @@ import (
 )

 func TestCreateAndFind(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB3Store{}
 	store.initialize(dir)
@@ -62,7 +62,7 @@ func TestCreateAndFind(t *testing.T) {
 }

 func TestEmptyRoot(t *testing.T) {
-	testFiler := filer.NewFiler(nil, nil, "", "", "", "", nil)
+	testFiler := filer.NewFiler(nil, nil, "", "", "", "", "", nil)
 	dir := t.TempDir()
 	store := &LevelDB3Store{}
 	store.initialize(dir)
@@ -3,7 +3,7 @@ package redis
 import (
 	"context"
 	"fmt"
-	"sort"
+	"golang.org/x/exp/slices"
 	"strings"
 	"time"

@@ -157,8 +157,8 @@ func (store *UniversalRedisStore) ListDirectoryEntries(ctx context.Context, dirP
 	}

 	// sort
-	sort.Slice(members, func(i, j int) bool {
-		return strings.Compare(members[i], members[j]) < 0
+	slices.SortFunc(members, func(a, b string) bool {
+		return strings.Compare(a, b) < 0
 	})

 	// limit
@@ -0,0 +1,9 @@
+/*
+
+Package sqlite is for sqlite filer store.
+
+The referenced "modernc.org/sqlite" library is too big when compiled.
+So this is only compiled in "make full_install".
+
+*/
+package sqlite
@@ -1,5 +1,6 @@
-//go:build linux || darwin || windows
+//go:build (linux || darwin || windows) && sqlite
 // +build linux darwin windows
+// +build sqlite

 // limited GOOS due to modernc.org/libc/unistd

@@ -1,5 +1,5 @@
-//go:build !linux && !darwin && !windows && !s390 && !ppc64le && !mips64
-// +build !linux,!darwin,!windows,!s390,!ppc64le,!mips64
+//go:build !linux && !darwin && !windows && !s390 && !ppc64le && !mips64 && !sqlite
+// +build !linux,!darwin,!windows,!s390,!ppc64le,!mips64,!sqlite

 // limited GOOS due to modernc.org/libc/unistd

@@ -3,6 +3,7 @@ package filer
 import (
 	"bytes"
 	"fmt"
+	"golang.org/x/exp/slices"
 	"io"
 	"math"
 	"sort"
@@ -39,11 +40,11 @@ func isSameChunks(a, b []*filer_pb.FileChunk) bool {
 	if len(a) != len(b) {
 		return false
 	}
-	sort.Slice(a, func(i, j int) bool {
-		return strings.Compare(a[i].ETag, a[j].ETag) < 0
+	slices.SortFunc(a, func(i, j *filer_pb.FileChunk) bool {
+		return strings.Compare(i.ETag, j.ETag) < 0
 	})
-	sort.Slice(b, func(i, j int) bool {
-		return strings.Compare(b[i].ETag, b[j].ETag) < 0
+	slices.SortFunc(b, func(i, j *filer_pb.FileChunk) bool {
+		return strings.Compare(i.ETag, j.ETag) < 0
 	})
 	for i := 0; i < len(a); i++ {
 		if a[i].ETag != b[i].ETag {
@@ -179,8 +180,8 @@ var _ = io.ReaderAt(&ChunkStreamReader{})
 func doNewChunkStreamReader(lookupFileIdFn wdclient.LookupFileIdFunctionType, chunks []*filer_pb.FileChunk) *ChunkStreamReader {

 	chunkViews := ViewFromChunks(lookupFileIdFn, chunks, 0, math.MaxInt64)
-	sort.Slice(chunkViews, func(i, j int) bool {
-		return chunkViews[i].LogicOffset < chunkViews[j].LogicOffset
+	slices.SortFunc(chunkViews, func(a, b *ChunkView) bool {
+		return a.LogicOffset < b.LogicOffset
 	})

 	var totalSize int64
@@ -377,6 +377,35 @@ func (iama *IamApiServer) DeleteAccessKey(s3cfg *iam_pb.S3ApiConfiguration, valu
 	return resp
 }

+// handleImplicitUsername adds username who signs the request to values if 'username' is not specified
+// According to https://awscli.amazonaws.com/v2/documentation/api/latest/reference/iam/create-access-key.html/
+// "If you do not specify a user name, IAM determines the user name implicitly based on the Amazon Web
+// Services access key ID signing the request."
+func handleImplicitUsername(r *http.Request, values url.Values) {
+	if len(r.Header["Authorization"]) == 0 || values.Get("UserName") != "" {
+		return
+	}
+	// get username who signs the request. For a typical Authorization:
+	// "AWS4-HMAC-SHA256 Credential=197FSAQ7HHTA48X64O3A/20220420/test1/iam/aws4_request, SignedHeaders=content-type;
+	// host;x-amz-date, Signature=6757dc6b3d7534d67e17842760310e99ee695408497f6edc4fdb84770c252dc8",
+	// the "test1" will be extracted as the username
+	glog.V(4).Infof("Authorization field: %v", r.Header["Authorization"][0])
+	s := strings.Split(r.Header["Authorization"][0], "Credential=")
+	if len(s) < 2 {
+		return
+	}
+	s = strings.Split(s[1], ",")
+	if len(s) < 2 {
+		return
+	}
+	s = strings.Split(s[0], "/")
+	if len(s) < 5 {
+		return
+	}
+	userName := s[2]
+	values.Set("UserName", userName)
+}
+
 func (iama *IamApiServer) DoActions(w http.ResponseWriter, r *http.Request) {
 	if err := r.ParseForm(); err != nil {
 		s3err.WriteErrorResponse(w, r, s3err.ErrInvalidRequest)
@@ -401,6 +430,7 @@ func (iama *IamApiServer) DoActions(w http.ResponseWriter, r *http.Request) {
 		response = iama.ListUsers(s3cfg, values)
 		changed = false
 	case "ListAccessKeys":
+		handleImplicitUsername(r, values)
 		response = iama.ListAccessKeys(s3cfg, values)
 		changed = false
 	case "CreateUser":
@@ -428,8 +458,10 @@ func (iama *IamApiServer) DoActions(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 	case "CreateAccessKey":
+		handleImplicitUsername(r, values)
 		response = iama.CreateAccessKey(s3cfg, values)
 	case "DeleteAccessKey":
+		handleImplicitUsername(r, values)
 		response = iama.DeleteAccessKey(s3cfg, values)
 	case "CreatePolicy":
 		response, err = iama.CreatePolicy(s3cfg, values)
@@ -455,6 +487,7 @@ func (iama *IamApiServer) DoActions(w http.ResponseWriter, r *http.Request) {
 	case "DeleteUserPolicy":
 		if response, err = iama.DeleteUserPolicy(s3cfg, values); err != nil {
 			writeIamErrorResponse(w, r, err, "user", values.Get("UserName"), nil)
+			return
 		}
 	default:
 		errNotImplemented := s3err.GetAPIError(s3err.ErrNotImplemented)
@@ -49,7 +49,7 @@ var s3ApiConfigure IamS3ApiConfig
 func NewIamApiServer(router *mux.Router, option *IamServerOption) (iamApiServer *IamApiServer, err error) {
 	s3ApiConfigure = IamS3ApiConfigure{
 		option:       option,
-		masterClient: wdclient.NewMasterClient(option.GrpcDialOption, "iam", "", "", option.Masters),
+		masterClient: wdclient.NewMasterClient(option.GrpcDialOption, "", "iam", "", "", option.Masters),
 	}
 	s3Option := s3api.S3ApiServerOption{Filer: option.Filer}
 	iamApiServer = &IamApiServer{
@@ -4,6 +4,7 @@ import (
 	"encoding/xml"
 	"net/http"
 	"net/http/httptest"
+	"net/url"
 	"testing"

 	"github.com/aws/aws-sdk-go/aws"
@@ -192,3 +193,24 @@ func executeRequest(req *http.Request, v interface{}) (*httptest.ResponseRecorde
 	apiRouter.ServeHTTP(rr, req)
 	return rr, xml.Unmarshal(rr.Body.Bytes(), &v)
 }
+
+func TestHandleImplicitUsername(t *testing.T) {
+	var tests = []struct {
+		r        *http.Request
+		values   url.Values
+		userName string
+	}{
+		{&http.Request{}, url.Values{}, ""},
+		{&http.Request{Header: http.Header{"Authorization": []string{"AWS4-HMAC-SHA256 Credential=197FSAQ7HHTA48X64O3A/20220420/test1/iam/aws4_request, SignedHeaders=content-type;host;x-amz-date, Signature=6757dc6b3d7534d67e17842760310e99ee695408497f6edc4fdb84770c252dc8"}}}, url.Values{}, "test1"},
+		{&http.Request{Header: http.Header{"Authorization": []string{"AWS4-HMAC-SHA256 =197FSAQ7HHTA48X64O3A/20220420/test1/iam/aws4_request, SignedHeaders=content-type;host;x-amz-date, Signature=6757dc6b3d7534d67e17842760310e99ee695408497f6edc4fdb84770c252dc8"}}}, url.Values{}, ""},
+		{&http.Request{Header: http.Header{"Authorization": []string{"AWS4-HMAC-SHA256 Credential=197FSAQ7HHTA48X64O3A/20220420/test1/iam/aws4_request SignedHeaders=content-type;host;x-amz-date Signature=6757dc6b3d7534d67e17842760310e99ee695408497f6edc4fdb84770c252dc8"}}}, url.Values{}, ""},
+		{&http.Request{Header: http.Header{"Authorization": []string{"AWS4-HMAC-SHA256 Credential=197FSAQ7HHTA48X64O3A/20220420/test1/iam, SignedHeaders=content-type;host;x-amz-date, Signature=6757dc6b3d7534d67e17842760310e99ee695408497f6edc4fdb84770c252dc8"}}}, url.Values{}, ""},
+	}
+
+	for i, test := range tests {
+		handleImplicitUsername(test.r, test.values)
+		if un := test.values.Get("UserName"); un != test.userName {
+			t.Errorf("No.%d: Got: %v, Expected: %v", i, un, test.userName)
+		}
+	}
+}
@@ -5,8 +5,8 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"golang.org/x/exp/slices"
 	"io"
-	"sort"
 	"sync"
 )

@@ -76,8 +76,8 @@ func (fh *FileHandle) addChunks(chunks []*filer_pb.FileChunk) {
 	}

 	// sort incoming chunks
-	sort.Slice(chunks, func(i, j int) bool {
-		return lessThan(chunks[i], chunks[j])
+	slices.SortFunc(chunks, func(a, b *filer_pb.FileChunk) bool {
+		return lessThan(a, b)
 	})

 	glog.V(4).Infof("%s existing %d chunks adds %d more", fh.FullPath(), len(fh.entry.Chunks), len(chunks))
@@ -49,6 +49,7 @@ func (i *FileHandleToInode) AcquireFileHandle(wfs *WFS, inode uint64, entry *fil
 	} else {
 		fh.counter++
 	}
+	fh.entry = entry
 	return fh
 }

@@ -187,6 +187,9 @@ func (up *UploadPipeline) moveToSealed(memChunk PageChunk, logicChunkIndex Logic

 func (up *UploadPipeline) Shutdown() {
 	up.swapFile.FreeResource()
+
+	up.sealedChunksLock.Lock()
+	defer up.sealedChunksLock.Unlock()
 	for logicChunkIndex, sealedChunk := range up.sealedChunks {
 		sealedChunk.FreeReference(fmt.Sprintf("%s uploadpipeline shutdown chunk %d", up.filepath, logicChunkIndex))
 	}
@@ -131,6 +131,9 @@ func (wfs *WFS) maybeReadEntry(inode uint64) (path util.FullPath, fh *FileHandle
 	}
 	var found bool
 	if fh, found = wfs.fhmap.FindFileHandle(inode); found {
+		if fh.entry.Attributes == nil {
+			fh.entry.Attributes = &filer_pb.FuseAttributes{}
+		}
 		return path, fh, fh.entry, fuse.OK
 	}
 	entry, status = wfs.maybeLoadEntry(path)
@@ -98,15 +98,14 @@ func (wfs *WFS) SetAttr(cancel <-chan struct{}, input *fuse.SetAttrIn, out *fuse
 		}
 	}

-	if mtime, ok := input.GetMTime(); ok {
-		entry.Attributes.Mtime = mtime.Unix()
-	}
-
 	if atime, ok := input.GetATime(); ok {
 		entry.Attributes.Mtime = atime.Unix()
 	}

-	entry.Attributes.Mtime = time.Now().Unix()
+	if mtime, ok := input.GetMTime(); ok {
+		entry.Attributes.Mtime = mtime.Unix()
+	}
+
 	out.AttrValid = 1
 	wfs.setAttrByPbEntry(&out.Attr, input.NodeId, entry)

@@ -10,7 +10,6 @@ func (wfs *WFS) AcquireHandle(inode uint64, uid, gid uint32) (fileHandle *FileHa
 	_, _, entry, status = wfs.maybeReadEntry(inode)
 	if status == fuse.OK {
 		fileHandle = wfs.fhmap.AcquireFileHandle(wfs, inode, entry)
-		fileHandle.entry = entry
 	}
 	return
 }
@@ -0,0 +1,9 @@
+/*
+
+Package gocdk_pub_sub is for Azure Service Bus and RabbitMQ.
+
+The referenced "gocloud.dev/pubsub" library is too big when compiled.
+So this is only compiled in "make full_install".
+
+*/
+package gocdk_pub_sub
@@ -1,3 +1,6 @@
+//go:build gocdk
+// +build gocdk
+
 // Package gocdk_pub_sub supports the Go CDK (Cloud Development Kit) PubSub API,
 // which in turn supports many providers, including Amazon SNS/SQS, Azure Service Bus,
 // Google Cloud PubSub, and RabbitMQ.
@@ -319,6 +319,9 @@ message PingRequest {
    string target_type = 2;
 }
 message PingResponse {
+    int64 start_time_ns = 1;
+    int64 remote_time_ns = 2;
+    int64 stop_time_ns = 3;
 }

 message GetFilerConfigurationRequest {
@@ -2583,6 +2583,10 @@ type PingResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
+
+	StartTimeNs  int64 `protobuf:"varint,1,opt,name=start_time_ns,json=startTimeNs,proto3" json:"start_time_ns,omitempty"`
+	RemoteTimeNs int64 `protobuf:"varint,2,opt,name=remote_time_ns,json=remoteTimeNs,proto3" json:"remote_time_ns,omitempty"`
+	StopTimeNs   int64 `protobuf:"varint,3,opt,name=stop_time_ns,json=stopTimeNs,proto3" json:"stop_time_ns,omitempty"`
 }

 func (x *PingResponse) Reset() {
@@ -2617,6 +2621,27 @@ func (*PingResponse) Descriptor() ([]byte, []int) {
 	return file_filer_proto_rawDescGZIP(), []int{38}
 }

+func (x *PingResponse) GetStartTimeNs() int64 {
+	if x != nil {
+		return x.StartTimeNs
+	}
+	return 0
+}
+
+func (x *PingResponse) GetRemoteTimeNs() int64 {
+	if x != nil {
+		return x.RemoteTimeNs
+	}
+	return 0
+}
+
+func (x *PingResponse) GetStopTimeNs() int64 {
+	if x != nil {
+		return x.StopTimeNs
+	}
+	return 0
+}
+
 type GetFilerConfigurationRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -4100,264 +4125,271 @@ var file_filer_proto_rawDesc = []byte{
 	0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x74, 0x61,
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+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
@@ -37,6 +37,12 @@ service Seaweed {
  }
  rpc Ping (PingRequest) returns (PingResponse) {
  }
+  rpc RaftListClusterServers (RaftListClusterServersRequest) returns (RaftListClusterServersResponse) {
+  }
+  rpc RaftAddServer (RaftAddServerRequest) returns (RaftAddServerResponse) {
+  }
+  rpc RaftRemoveServer (RaftRemoveServerRequest) returns (RaftRemoveServerResponse) {
+  }
 }

 //////////////////////////////////////////////////
@@ -131,6 +137,7 @@ message KeepConnectedRequest {
  string client_type = 1;
  string client_address = 3;
  string version = 4;
+  string filer_group = 5;
 }

 message VolumeLocation {
@@ -141,6 +148,8 @@ message VolumeLocation {
  string leader = 5; // optional when leader is not itself
  string data_center = 6; // optional when DataCenter is in use
  uint32 grpc_port = 7;
+  repeated uint32 new_ec_vids = 8;
+  repeated uint32 deleted_ec_vids = 9;
 }

 message ClusterNodeUpdate {
@@ -148,6 +157,7 @@ message ClusterNodeUpdate {
  string address = 2;
  bool is_leader = 3;
  bool is_add = 4;
+  string filer_group = 5;
 }

 message KeepConnectedResponse {
@@ -282,6 +292,8 @@ message LookupEcVolumeResponse {

 message VacuumVolumeRequest {
  float garbage_threshold = 1;
+  uint32 volume_id = 2;
+  string collection = 3;
 }
 message VacuumVolumeResponse {
 }
@@ -300,6 +312,7 @@ message GetMasterConfigurationResponse {

 message ListClusterNodesRequest {
  string client_type = 1;
+  string filer_group = 2;
 }
 message ListClusterNodesResponse {
  message ClusterNode {
@@ -335,4 +348,33 @@ message PingRequest {
  string target_type = 2;
 }
 message PingResponse {
+  int64 start_time_ns = 1;
+  int64 remote_time_ns = 2;
+  int64 stop_time_ns = 3;
+}
+
+message RaftAddServerRequest {
+  string id = 1;
+  string address = 2;
+  bool voter = 3;
+}
+message RaftAddServerResponse {
+}
+
+message RaftRemoveServerRequest {
+  string id = 1;
+  bool force = 2;
+}
+message RaftRemoveServerResponse {
+}
+
+message RaftListClusterServersRequest {
+}
+message RaftListClusterServersResponse {
+  message ClusterServers {
+    string id = 1;
+    string address = 2;
+    string suffrage = 3; //
+  }
+  repeated ClusterServers cluster_servers = 1;
 }
@@ -33,6 +33,9 @@ type SeaweedClient interface {
 	LeaseAdminToken(ctx context.Context, in *LeaseAdminTokenRequest, opts ...grpc.CallOption) (*LeaseAdminTokenResponse, error)
 	ReleaseAdminToken(ctx context.Context, in *ReleaseAdminTokenRequest, opts ...grpc.CallOption) (*ReleaseAdminTokenResponse, error)
 	Ping(ctx context.Context, in *PingRequest, opts ...grpc.CallOption) (*PingResponse, error)
+	RaftListClusterServers(ctx context.Context, in *RaftListClusterServersRequest, opts ...grpc.CallOption) (*RaftListClusterServersResponse, error)
+	RaftAddServer(ctx context.Context, in *RaftAddServerRequest, opts ...grpc.CallOption) (*RaftAddServerResponse, error)
+	RaftRemoveServer(ctx context.Context, in *RaftRemoveServerRequest, opts ...grpc.CallOption) (*RaftRemoveServerResponse, error)
 }

 type seaweedClient struct {
@@ -222,6 +225,33 @@ func (c *seaweedClient) Ping(ctx context.Context, in *PingRequest, opts ...grpc.
 	return out, nil
 }

+func (c *seaweedClient) RaftListClusterServers(ctx context.Context, in *RaftListClusterServersRequest, opts ...grpc.CallOption) (*RaftListClusterServersResponse, error) {
+	out := new(RaftListClusterServersResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/RaftListClusterServers", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) RaftAddServer(ctx context.Context, in *RaftAddServerRequest, opts ...grpc.CallOption) (*RaftAddServerResponse, error) {
+	out := new(RaftAddServerResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/RaftAddServer", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *seaweedClient) RaftRemoveServer(ctx context.Context, in *RaftRemoveServerRequest, opts ...grpc.CallOption) (*RaftRemoveServerResponse, error) {
+	out := new(RaftRemoveServerResponse)
+	err := c.cc.Invoke(ctx, "/master_pb.Seaweed/RaftRemoveServer", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // SeaweedServer is the server API for Seaweed service.
 // All implementations must embed UnimplementedSeaweedServer
 // for forward compatibility
@@ -241,6 +271,9 @@ type SeaweedServer interface {
 	LeaseAdminToken(context.Context, *LeaseAdminTokenRequest) (*LeaseAdminTokenResponse, error)
 	ReleaseAdminToken(context.Context, *ReleaseAdminTokenRequest) (*ReleaseAdminTokenResponse, error)
 	Ping(context.Context, *PingRequest) (*PingResponse, error)
+	RaftListClusterServers(context.Context, *RaftListClusterServersRequest) (*RaftListClusterServersResponse, error)
+	RaftAddServer(context.Context, *RaftAddServerRequest) (*RaftAddServerResponse, error)
+	RaftRemoveServer(context.Context, *RaftRemoveServerRequest) (*RaftRemoveServerResponse, error)
 	mustEmbedUnimplementedSeaweedServer()
 }

@@ -293,6 +326,15 @@ func (UnimplementedSeaweedServer) ReleaseAdminToken(context.Context, *ReleaseAdm
 func (UnimplementedSeaweedServer) Ping(context.Context, *PingRequest) (*PingResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Ping not implemented")
 }
+func (UnimplementedSeaweedServer) RaftListClusterServers(context.Context, *RaftListClusterServersRequest) (*RaftListClusterServersResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RaftListClusterServers not implemented")
+}
+func (UnimplementedSeaweedServer) RaftAddServer(context.Context, *RaftAddServerRequest) (*RaftAddServerResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RaftAddServer not implemented")
+}
+func (UnimplementedSeaweedServer) RaftRemoveServer(context.Context, *RaftRemoveServerRequest) (*RaftRemoveServerResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RaftRemoveServer not implemented")
+}
 func (UnimplementedSeaweedServer) mustEmbedUnimplementedSeaweedServer() {}

 // UnsafeSeaweedServer may be embedded to opt out of forward compatibility for this service.
@@ -592,6 +634,60 @@ func _Seaweed_Ping_Handler(srv interface{}, ctx context.Context, dec func(interf
 	return interceptor(ctx, in, info, handler)
 }

+func _Seaweed_RaftListClusterServers_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RaftListClusterServersRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).RaftListClusterServers(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/RaftListClusterServers",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).RaftListClusterServers(ctx, req.(*RaftListClusterServersRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_RaftAddServer_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RaftAddServerRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).RaftAddServer(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/RaftAddServer",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).RaftAddServer(ctx, req.(*RaftAddServerRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Seaweed_RaftRemoveServer_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RaftRemoveServerRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(SeaweedServer).RaftRemoveServer(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/master_pb.Seaweed/RaftRemoveServer",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(SeaweedServer).RaftRemoveServer(ctx, req.(*RaftRemoveServerRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // Seaweed_ServiceDesc is the grpc.ServiceDesc for Seaweed service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -651,6 +747,18 @@ var Seaweed_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Ping",
 			Handler:    _Seaweed_Ping_Handler,
 		},
+		{
+			MethodName: "RaftListClusterServers",
+			Handler:    _Seaweed_RaftListClusterServers_Handler,
+		},
+		{
+			MethodName: "RaftAddServer",
+			Handler:    _Seaweed_RaftAddServer_Handler,
+		},
+		{
+			MethodName: "RaftRemoveServer",
+			Handler:    _Seaweed_RaftRemoveServer_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -30,7 +30,7 @@ func TestJsonpMarshalUnmarshal(t *testing.T) {
 	rawJson := `{
 		"backendType":"aws",
 		"backendId":"temp",
-		"FileSize":12
+		"fileSize":12
 	}`

 	tv1 := &volume_server_pb.RemoteFile{}
@@ -583,4 +583,7 @@ message PingRequest {
    string target_type = 2;
 }
 message PingResponse {
+    int64 start_time_ns = 1;
+    int64 remote_time_ns = 2;
+    int64 stop_time_ns = 3;
 }
@@ -4929,6 +4929,10 @@ type PingResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
+
+	StartTimeNs  int64 `protobuf:"varint,1,opt,name=start_time_ns,json=startTimeNs,proto3" json:"start_time_ns,omitempty"`
+	RemoteTimeNs int64 `protobuf:"varint,2,opt,name=remote_time_ns,json=remoteTimeNs,proto3" json:"remote_time_ns,omitempty"`
+	StopTimeNs   int64 `protobuf:"varint,3,opt,name=stop_time_ns,json=stopTimeNs,proto3" json:"stop_time_ns,omitempty"`
 }

 func (x *PingResponse) Reset() {
@@ -4963,6 +4967,27 @@ func (*PingResponse) Descriptor() ([]byte, []int) {
 	return file_volume_server_proto_rawDescGZIP(), []int{87}
 }

+func (x *PingResponse) GetStartTimeNs() int64 {
+	if x != nil {
+		return x.StartTimeNs
+	}
+	return 0
+}
+
+func (x *PingResponse) GetRemoteTimeNs() int64 {
+	if x != nil {
+		return x.RemoteTimeNs
+	}
+	return 0
+}
+
+func (x *PingResponse) GetStopTimeNs() int64 {
+	if x != nil {
+		return x.StopTimeNs
+	}
+	return 0
+}
+
 type FetchAndWriteNeedleRequest_Replica struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -6162,297 +6187,304 @@ var file_volume_server_proto_rawDesc = []byte{
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 }

 var (
@@ -0,0 +1,9 @@
+/*
+
+Package hdfs is for remote hdfs storage.
+
+The referenced "github.com/colinmarc/hdfs/v2" library is too big when compiled.
+So this is only compiled in "make full_install".
+
+*/
+package hdfs
@@ -1,3 +1,6 @@
+//go:build hdfs
+// +build hdfs
+
 package hdfs

 import (
@@ -1,3 +1,6 @@
+//go:build hdfs
+// +build hdfs
+
 package hdfs

 import (
@@ -7,7 +10,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
 	"github.com/chrislusf/seaweedfs/weed/remote_storage"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	"github.com/colinmarc/hdfs/v2"
+	hdfs "github.com/colinmarc/hdfs/v2"
 	"io"
 	"os"
 	"path"
@@ -12,11 +12,11 @@ import (
 	"time"
 )

+const slash = "/"
+
 func ParseLocationName(remote string) (locationName string) {
-	if strings.HasSuffix(string(remote), "/") {
-		remote = remote[:len(remote)-1]
-	}
-	parts := strings.SplitN(string(remote), "/", 2)
+	remote = strings.TrimSuffix(remote, slash)
+	parts := strings.SplitN(remote, slash, 2)
 	if len(parts) >= 1 {
 		return parts[0]
 	}
@@ -25,35 +25,31 @@ func ParseLocationName(remote string) (locationName string) {

 func parseBucketLocation(remote string) (loc *remote_pb.RemoteStorageLocation) {
 	loc = &remote_pb.RemoteStorageLocation{}
-	if strings.HasSuffix(string(remote), "/") {
-		remote = remote[:len(remote)-1]
-	}
-	parts := strings.SplitN(string(remote), "/", 3)
+	remote = strings.TrimSuffix(remote, slash)
+	parts := strings.SplitN(remote, slash, 3)
 	if len(parts) >= 1 {
 		loc.Name = parts[0]
 	}
 	if len(parts) >= 2 {
 		loc.Bucket = parts[1]
 	}
-	loc.Path = string(remote[len(loc.Name)+1+len(loc.Bucket):])
+	loc.Path = remote[len(loc.Name)+1+len(loc.Bucket):]
 	if loc.Path == "" {
-		loc.Path = "/"
+		loc.Path = slash
 	}
 	return
 }

 func parseNoBucketLocation(remote string) (loc *remote_pb.RemoteStorageLocation) {
 	loc = &remote_pb.RemoteStorageLocation{}
-	if strings.HasSuffix(string(remote), "/") {
-		remote = remote[:len(remote)-1]
-	}
-	parts := strings.SplitN(string(remote), "/", 2)
+	remote = strings.TrimSuffix(remote, slash)
+	parts := strings.SplitN(remote, slash, 2)
 	if len(parts) >= 1 {
 		loc.Name = parts[0]
 	}
-	loc.Path = string(remote[len(loc.Name):])
+	loc.Path = remote[len(loc.Name):]
 	if loc.Path == "" {
-		loc.Path = "/"
+		loc.Path = slash
 	}
 	return
 }
@@ -1,3 +1,6 @@
+//go:build gocdk
+// +build gocdk
+
 package sub

 import (
@@ -5,6 +5,8 @@ import (
 	"encoding/xml"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/s3api/s3err"
+	"golang.org/x/exp/slices"
+	"math"
 	"path/filepath"
 	"sort"
 	"strconv"
@@ -13,7 +15,6 @@ import (

 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/service/s3"
-	"github.com/google/uuid"

 	"github.com/chrislusf/seaweedfs/weed/filer"
 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -29,8 +30,7 @@ func (s3a *S3ApiServer) createMultipartUpload(input *s3.CreateMultipartUploadInp

 	glog.V(2).Infof("createMultipartUpload input %v", input)

-	uploadId, _ := uuid.NewRandom()
-	uploadIdString := uploadId.String()
+	uploadIdString := s3a.generateUploadID(*input.Key)

 	if err := s3a.mkdir(s3a.genUploadsFolder(*input.Bucket), uploadIdString, func(entry *filer_pb.Entry) {
 		if entry.Extended == nil {
@@ -69,8 +69,8 @@ func (s3a *S3ApiServer) completeMultipartUpload(input *s3.CompleteMultipartUploa
 	glog.V(2).Infof("completeMultipartUpload input %v", input)

 	completedParts := parts.Parts
-	sort.Slice(completedParts, func(i, j int) bool {
-		return completedParts[i].PartNumber < completedParts[j].PartNumber
+	slices.SortFunc(completedParts, func(a, b CompletedPart) bool {
+		return a.PartNumber < b.PartNumber
 	})

 	uploadDirectory := s3a.genUploadsFolder(*input.Bucket) + "/" + *input.UploadId
@@ -243,13 +243,13 @@ func (s3a *S3ApiServer) listMultipartUploads(input *s3.ListMultipartUploadsInput
 		Prefix:       input.Prefix,
 	}

-	entries, isLast, err := s3a.list(s3a.genUploadsFolder(*input.Bucket), "", *input.UploadIdMarker, false, uint32(*input.MaxUploads))
+	entries, _, err := s3a.list(s3a.genUploadsFolder(*input.Bucket), "", *input.UploadIdMarker, false, math.MaxInt32)
 	if err != nil {
 		glog.Errorf("listMultipartUploads %s error: %v", *input.Bucket, err)
 		return
 	}
-	output.IsTruncated = aws.Bool(!isLast)

+	uploadsCount := int64(0)
 	for _, entry := range entries {
 		if entry.Extended != nil {
 			key := string(entry.Extended["key"])
@@ -263,9 +263,12 @@ func (s3a *S3ApiServer) listMultipartUploads(input *s3.ListMultipartUploadsInput
 				Key:      objectKey(aws.String(key)),
 				UploadId: aws.String(entry.Name),
 			})
-			if !isLast {
-				output.NextUploadIdMarker = aws.String(entry.Name)
-			}
+			uploadsCount += 1
+		}
+		if uploadsCount >= *input.MaxUploads {
+			output.IsTruncated = aws.Bool(true)
+			output.NextUploadIdMarker = aws.String(entry.Name)
+			break
 		}
 	}

@@ -135,6 +135,7 @@ func (s3a *S3ApiServer) PutBucketHandler(w http.ResponseWriter, r *http.Request)
 		s3err.WriteErrorResponse(w, r, s3err.ErrInternalError)
 		return
 	}
+	w.Header().Set("Location", "/"+bucket)
 	writeSuccessResponseEmpty(w, r)
 }

@@ -8,10 +8,10 @@ import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/chrislusf/seaweedfs/weed/util/mem"
+	"golang.org/x/exp/slices"
 	"io"
 	"net/http"
 	"net/url"
-	"sort"
 	"strings"
 	"time"

@@ -290,8 +290,8 @@ func (s3a *S3ApiServer) doDeleteEmptyDirectories(client filer_pb.SeaweedFilerCli
 	for dir, _ := range directoriesWithDeletion {
 		allDirs = append(allDirs, dir)
 	}
-	sort.Slice(allDirs, func(i, j int) bool {
-		return len(allDirs[i]) > len(allDirs[j])
+	slices.SortFunc(allDirs, func(a, b string) bool {
+		return len(a) > len(b)
 	})
 	newDirectoriesWithDeletion = make(map[string]int)
 	for _, dir := range allDirs {
@@ -1,6 +1,7 @@
 package s3api

 import (
+	"crypto/sha1"
 	"encoding/xml"
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/glog"
@@ -70,6 +71,11 @@ func (s3a *S3ApiServer) CompleteMultipartUploadHandler(w http.ResponseWriter, r

 	// Get upload id.
 	uploadID, _, _, _ := getObjectResources(r.URL.Query())
+	err := s3a.checkUploadId(object, uploadID)
+	if err != nil {
+		s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload)
+		return
+	}

 	response, errCode := s3a.completeMultipartUpload(&s3.CompleteMultipartUploadInput{
 		Bucket:   aws.String(bucket),
@@ -94,6 +100,11 @@ func (s3a *S3ApiServer) AbortMultipartUploadHandler(w http.ResponseWriter, r *ht

 	// Get upload id.
 	uploadID, _, _, _ := getObjectResources(r.URL.Query())
+	err := s3a.checkUploadId(object, uploadID)
+	if err != nil {
+		s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload)
+		return
+	}

 	response, errCode := s3a.abortMultipartUpload(&s3.AbortMultipartUploadInput{
 		Bucket:   aws.String(bucket),
@@ -165,6 +176,12 @@ func (s3a *S3ApiServer) ListObjectPartsHandler(w http.ResponseWriter, r *http.Re
 		return
 	}

+	err := s3a.checkUploadId(object, uploadID)
+	if err != nil {
+		s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload)
+		return
+	}
+
 	response, errCode := s3a.listObjectParts(&s3.ListPartsInput{
 		Bucket:           aws.String(bucket),
 		Key:              objectKey(aws.String(object)),
@@ -186,11 +203,11 @@ func (s3a *S3ApiServer) ListObjectPartsHandler(w http.ResponseWriter, r *http.Re

 // PutObjectPartHandler - Put an object part in a multipart upload.
 func (s3a *S3ApiServer) PutObjectPartHandler(w http.ResponseWriter, r *http.Request) {
-	bucket, _ := xhttp.GetBucketAndObject(r)
+	bucket, object := xhttp.GetBucketAndObject(r)

 	uploadID := r.URL.Query().Get("uploadId")
-	exists, err := s3a.exists(s3a.genUploadsFolder(bucket), uploadID, true)
-	if !exists {
+	err := s3a.checkUploadId(object, uploadID)
+	if err != nil {
 		s3err.WriteErrorResponse(w, r, s3err.ErrNoSuchUpload)
 		return
 	}
@@ -250,6 +267,27 @@ func (s3a *S3ApiServer) genUploadsFolder(bucket string) string {
 	return fmt.Sprintf("%s/%s/.uploads", s3a.option.BucketsPath, bucket)
 }

+// Generate uploadID hash string from object
+func (s3a *S3ApiServer) generateUploadID(object string) string {
+	if strings.HasPrefix(object, "/") {
+		object = object[1:]
+	}
+	h := sha1.New()
+	h.Write([]byte(object))
+	return fmt.Sprintf("%x", h.Sum(nil))
+}
+
+//Check object name and uploadID when processing  multipart uploading
+func (s3a *S3ApiServer) checkUploadId(object string, id string) error {
+
+	hash := s3a.generateUploadID(object)
+	if hash != id {
+		glog.Errorf("object %s and uploadID %s are not matched", object, id)
+		return fmt.Errorf("object %s and uploadID %s are not matched", object, id)
+	}
+	return nil
+}
+
 // Parse bucket url queries for ?uploads
 func getBucketMultipartResources(values url.Values) (prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int, encodingType string) {
 	prefix = values.Get("prefix")
@@ -10,6 +10,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
 	"github.com/chrislusf/seaweedfs/weed/util"
+	"time"
 )

 func (fs *FilerServer) Statistics(ctx context.Context, req *filer_pb.StatisticsRequest) (resp *filer_pb.StatisticsResponse, err error) {
@@ -43,28 +44,40 @@ func (fs *FilerServer) Statistics(ctx context.Context, req *filer_pb.StatisticsR
 }

 func (fs *FilerServer) Ping(ctx context.Context, req *filer_pb.PingRequest) (resp *filer_pb.PingResponse, pingErr error) {
-	resp = &filer_pb.PingResponse{}
+	resp = &filer_pb.PingResponse{
+		StartTimeNs: time.Now().UnixNano(),
+	}
 	if req.TargetType == cluster.FilerType {
 		pingErr = pb.WithFilerClient(false, pb.ServerAddress(req.Target), fs.grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
-			_, err := client.Ping(ctx, &filer_pb.PingRequest{})
+			pingResp, err := client.Ping(ctx, &filer_pb.PingRequest{})
+			if pingResp != nil {
+				resp.RemoteTimeNs = pingResp.StartTimeNs
+			}
 			return err
 		})
 	}
 	if req.TargetType == cluster.VolumeServerType {
 		pingErr = pb.WithVolumeServerClient(false, pb.ServerAddress(req.Target), fs.grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
-			_, err := client.Ping(ctx, &volume_server_pb.PingRequest{})
+			pingResp, err := client.Ping(ctx, &volume_server_pb.PingRequest{})
+			if pingResp != nil {
+				resp.RemoteTimeNs = pingResp.StartTimeNs
+			}
 			return err
 		})
 	}
 	if req.TargetType == cluster.MasterType {
 		pingErr = pb.WithMasterClient(false, pb.ServerAddress(req.Target), fs.grpcDialOption, func(client master_pb.SeaweedClient) error {
-			_, err := client.Ping(ctx, &master_pb.PingRequest{})
+			pingResp, err := client.Ping(ctx, &master_pb.PingRequest{})
+			if pingResp != nil {
+				resp.RemoteTimeNs = pingResp.StartTimeNs
+			}
 			return err
 		})
 	}
 	if pingErr != nil {
 		pingErr = fmt.Errorf("ping %s %s: %v", req.TargetType, req.Target, pingErr)
 	}
+	resp.StopTimeNs = time.Now().UnixNano()
 	return
 }

@@ -21,6 +21,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/util"

 	"github.com/chrislusf/seaweedfs/weed/filer"
+	_ "github.com/chrislusf/seaweedfs/weed/filer/arangodb"
 	_ "github.com/chrislusf/seaweedfs/weed/filer/cassandra"
 	_ "github.com/chrislusf/seaweedfs/weed/filer/elastic/v7"
 	_ "github.com/chrislusf/seaweedfs/weed/filer/etcd"
@@ -49,6 +50,7 @@ import (

 type FilerOption struct {
 	Masters               map[string]pb.ServerAddress
+	FilerGroup            string
 	Collection            string
 	DefaultReplication    string
 	DisableDirListing     bool
@@ -117,7 +119,7 @@ func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, option *FilerOption)
 		glog.Fatal("master list is required!")
 	}

-	fs.filer = filer.NewFiler(option.Masters, fs.grpcDialOption, option.Host, option.Collection, option.DefaultReplication, option.DataCenter, func() {
+	fs.filer = filer.NewFiler(option.Masters, fs.grpcDialOption, option.Host, option.FilerGroup, option.Collection, option.DefaultReplication, option.DataCenter, func() {
 		fs.listenersCond.Broadcast()
 	})
 	fs.filer.Cipher = option.Cipher
@@ -205,7 +205,7 @@ func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request)
 			err := filer.ReadAll(data, fs.filer.MasterClient, entry.Chunks)
 			if err != nil {
 				glog.Errorf("failed to read %s: %v", path, err)
-				w.WriteHeader(http.StatusNotModified)
+				w.WriteHeader(http.StatusInternalServerError)
 				return
 			}
 			rs, _, _ := images.Resized(ext, bytes.NewReader(data), width, height, mode)
@@ -46,8 +46,10 @@ func (fs *FilerServer) listDirectoryHandler(w http.ResponseWriter, r *http.Reque
 		path = ""
 	}

+	emptyFolder := true
 	if len(entries) > 0 {
 		lastFileName = entries[len(entries)-1].Name()
+		emptyFolder = false
 	}

 	glog.V(4).Infof("listDirectory %s, last file %s, limit %d: %d items", path, lastFileName, limit, len(entries))
@@ -59,12 +61,14 @@ func (fs *FilerServer) listDirectoryHandler(w http.ResponseWriter, r *http.Reque
 			Limit                 int
 			LastFileName          string
 			ShouldDisplayLoadMore bool
+			EmptyFolder           bool
 		}{
 			path,
 			entries,
 			limit,
 			lastFileName,
 			shouldDisplayLoadMore,
+			emptyFolder,
 		})
 		return
 	}
@@ -76,6 +80,7 @@ func (fs *FilerServer) listDirectoryHandler(w http.ResponseWriter, r *http.Reque
 		Limit                 int
 		LastFileName          string
 		ShouldDisplayLoadMore bool
+		EmptyFolder           bool
 	}{
 		path,
 		ui.ToBreadcrumb(path),
@@ -83,5 +88,6 @@ func (fs *FilerServer) listDirectoryHandler(w http.ResponseWriter, r *http.Reque
 		limit,
 		lastFileName,
 		shouldDisplayLoadMore,
+		emptyFolder,
 	})
 }
@@ -164,6 +164,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 	}

 	var entry *filer.Entry
+	var newChunks []*filer_pb.FileChunk
 	var mergedChunks []*filer_pb.FileChunk

 	isAppend := isAppend(r)
@@ -186,7 +187,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 			}
 			entry.FileSize += uint64(chunkOffset)
 		}
-		mergedChunks = append(entry.Chunks, fileChunks...)
+		newChunks = append(entry.Chunks, fileChunks...)

 		// TODO
 		if len(entry.Content) > 0 {
@@ -196,7 +197,7 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa

 	} else {
 		glog.V(4).Infoln("saving", path)
-		mergedChunks = fileChunks
+		newChunks = fileChunks
 		entry = &filer.Entry{
 			FullPath: util.FullPath(path),
 			Attr: filer.Attr{
@@ -217,6 +218,13 @@ func (fs *FilerServer) saveMetaData(ctx context.Context, r *http.Request, fileNa
 		}
 	}

+	// maybe concatenate small chunks into one whole chunk
+	mergedChunks, replyerr = fs.maybeMergeChunks(so, newChunks)
+	if replyerr != nil {
+		glog.V(0).Infof("merge chunks %s: %v", r.RequestURI, replyerr)
+		mergedChunks = newChunks
+	}
+
 	// maybe compact entry chunks
 	mergedChunks, replyerr = filer.MaybeManifestize(fs.saveAsChunk(so), mergedChunks)
 	if replyerr != nil {
--- a/Show More
+++ b/Show More