Release 0.9.3

- Add patch for libvirt 9.0
- Add support for Proxmox VE 8.0
- Fix compatibility of the QEMU driver with iothread (QEMU rebuilds are coming)
- Fix vitastor-cli rm-data/rm/merge hanging when some OSDs are down.
  Allow deletions in unclean cluster at the cost of some data possibly
  "reappearing" when those OSDs start back. In that case you can just repeat
  the deletion request using rm-data.
- A bunch of bug fixes for snapshots:
  - Fix snapshot reads often not working at all with snapshot chain size > 2
  - Fix optimized snapshot data merge (children to parent)
  - Fix updating of image name index key during optimized merge
  - Fix auto-selection preventing the use of optimized merge with only 1 snapshot
  - Fix incorrect CAS retries during snapshot merge
  - Fix snapshot merge progress reporting
- Fix primary_read bitmap buffers use-after-free which could lead to
  incorrect allocation map reads
- Remove /usr/local/bin path from make-etcd
- Some documentation fixes

.gitea/workflows/buildenv.Dockerfile

@@ -0,0 +1,36 @@
+FROM node:16-bullseye
+
+WORKDIR /root
+
+ADD ./docker/vitastor.gpg /etc/apt/trusted.gpg.d
+
+RUN echo 'deb http://deb.debian.org/debian bullseye-backports main' >> /etc/apt/sources.list; \
+    echo 'deb http://vitastor.io/debian bullseye main' >> /etc/apt/sources.list; \
+    echo >> /etc/apt/preferences; \
+    echo 'Package: *' >> /etc/apt/preferences; \
+    echo 'Pin: release a=bullseye-backports' >> /etc/apt/preferences; \
+    echo 'Pin-Priority: 500' >> /etc/apt/preferences; \
+    echo >> /etc/apt/preferences; \
+    echo 'Package: *' >> /etc/apt/preferences; \
+    echo 'Pin: origin "vitastor.io"' >> /etc/apt/preferences; \
+    echo 'Pin-Priority: 1000' >> /etc/apt/preferences; \
+    grep '^deb ' /etc/apt/sources.list | perl -pe 's/^deb/deb-src/' >> /etc/apt/sources.list; \
+    echo 'APT::Install-Recommends false;' >> /etc/apt/apt.conf; \
+    echo 'APT::Install-Suggests false;' >> /etc/apt/apt.conf
+
+RUN apt-get update
+RUN apt-get -y install etcd qemu-system-x86 qemu-block-extra qemu-utils fio libasan5 \
+    liburing1 liburing-dev libgoogle-perftools-dev devscripts libjerasure-dev cmake libibverbs-dev libisal-dev
+RUN apt-get -y build-dep fio qemu=`dpkg -s qemu-system-x86|grep ^Version:|awk '{print $2}'`
+RUN apt-get -y install jq lp-solve sudo
+RUN apt-get --download-only source fio qemu=`dpkg -s qemu-system-x86|grep ^Version:|awk '{print $2}'`
+
+RUN set -ex; \
+    mkdir qemu-build; \
+    cd qemu-build; \
+    dpkg-source -x /root/qemu*.dsc; \
+    cd qemu*/; \
+    debian/rules configure-qemu || debian/rules b/configure-stamp; \
+    cd b/qemu; \
+    make -j8 config-poison.h || true; \
+    make -j8 qapi/qapi-builtin-types.h

.gitea/workflows/test.Dockerfile

@@ -0,0 +1,19 @@
+FROM git.yourcmc.ru/vitalif/vitastor/buildenv
+
+ADD . /root/vitastor
+
+RUN set -e -x; \
+    mkdir -p /root/fio-build/; \
+    cd /root/fio-build/; \
+    dpkg-source -x /root/fio*.dsc; \
+    cd /root/vitastor; \
+    ln -s /root/fio-build/fio-*/ ./fio; \
+    ln -s /root/qemu-build/qemu-*/ ./qemu; \
+    ls /usr/include/linux/raw.h || cp ./debian/raw.h /usr/include/linux/raw.h; \
+    cd mon; \
+    npm install; \
+    cd ..; \
+    mkdir build; \
+    cd build; \
+    cmake .. -DWITH_ASAN=yes -DWITH_QEMU=yes; \
+    make -j16

.gitea/workflows/test.yml

@@ -0,0 +1,732 @@
+name: Test
+
+on:
+  push:
+    branches:
+    - '*'
+    paths:
+    - '.gitea/**'
+    - 'src/**'
+    - 'mon/**'
+    - 'json11'
+    - 'cpp-btree'
+    - 'tests/**'
+
+env:
+  BUILDENV_IMAGE: git.yourcmc.ru/vitalif/vitastor/buildenv
+  TEST_IMAGE: git.yourcmc.ru/vitalif/vitastor/test
+  OSD_ARGS: '--etcd_quick_timeout 2000'
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+
+  buildenv:
+    runs-on: ubuntu-latest
+    container: git.yourcmc.ru/vitalif/gitea-ci-dind
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Build and push
+      run: |
+        set -ex
+        if ! docker manifest inspect $BUILDENV_IMAGE >/dev/null; then
+          docker build -t $BUILDENV_IMAGE -f .gitea/workflows/buildenv.Dockerfile .
+          docker login git.yourcmc.ru -u vitalif -p "${{secrets.TOKEN}}"
+          docker push $BUILDENV_IMAGE
+        fi
+
+  build:
+    runs-on: ubuntu-latest
+    needs: buildenv
+    container: git.yourcmc.ru/vitalif/gitea-ci-dind
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: true
+
+    - name: Build and push
+      run: |
+        set -ex
+        if ! docker manifest inspect $TEST_IMAGE:$GITHUB_SHA >/dev/null; then
+          docker build -t $TEST_IMAGE:$GITHUB_SHA -f .gitea/workflows/test.Dockerfile .
+          docker login git.yourcmc.ru -u vitalif -p "${{secrets.TOKEN}}"
+          docker push $TEST_IMAGE:$GITHUB_SHA
+        fi
+
+  make_test:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    # leak sanitizer sometimes crashes
+    - run: cd /root/vitastor/build && ASAN_OPTIONS=detect_leaks=0 make -j16 test
+
+  test_add_osd:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: /root/vitastor/tests/test_add_osd.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_cas:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_cas.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_change_pg_count:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_change_pg_count.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_change_pg_count_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: SCHEME=ec /root/vitastor/tests/test_change_pg_count.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_change_pg_size:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_change_pg_size.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_create_nomaxid:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_create_nomaxid.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_etcd_fail:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: /root/vitastor/tests/test_etcd_fail.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_interrupted_rebalance:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: /root/vitastor/tests/test_interrupted_rebalance.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_interrupted_rebalance_imm:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: IMMEDIATE_COMMIT=1 /root/vitastor/tests/test_interrupted_rebalance.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_interrupted_rebalance_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: SCHEME=ec /root/vitastor/tests/test_interrupted_rebalance.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_interrupted_rebalance_ec_imm:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: SCHEME=ec IMMEDIATE_COMMIT=1 /root/vitastor/tests/test_interrupted_rebalance.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_failure_domain:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_failure_domain.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_snapshot:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_snapshot.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_snapshot_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: SCHEME=ec /root/vitastor/tests/test_snapshot.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_minsize_1:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_minsize_1.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_move_reappear:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_move_reappear.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_rm:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_rm.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_snapshot_chain:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_snapshot_chain.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_snapshot_chain_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: SCHEME=ec /root/vitastor/tests/test_snapshot_chain.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_snapshot_down:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_snapshot_down.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_snapshot_down_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: SCHEME=ec /root/vitastor/tests/test_snapshot_down.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_splitbrain:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_splitbrain.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_rebalance_verify:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: /root/vitastor/tests/test_rebalance_verify.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_rebalance_verify_imm:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: IMMEDIATE_COMMIT=1 /root/vitastor/tests/test_rebalance_verify.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_rebalance_verify_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: SCHEME=ec /root/vitastor/tests/test_rebalance_verify.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_rebalance_verify_ec_imm:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: SCHEME=ec IMMEDIATE_COMMIT=1 /root/vitastor/tests/test_rebalance_verify.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_write:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_write.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_write_xor:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: SCHEME=xor /root/vitastor/tests/test_write.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_write_no_same:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_write_no_same.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_heal_pg_size_2:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: PG_SIZE=2 /root/vitastor/tests/test_heal.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_heal_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 10
+      run: SCHEME=ec /root/vitastor/tests/test_heal.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_scrub:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: /root/vitastor/tests/test_scrub.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_scrub_zero_osd_2:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: ZERO_OSD=2 /root/vitastor/tests/test_scrub.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_scrub_xor:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: SCHEME=xor /root/vitastor/tests/test_scrub.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_scrub_pg_size_3:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: PG_SIZE=3 /root/vitastor/tests/test_scrub.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_scrub_pg_size_6_pg_minsize_4_osd_count_6_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: PG_SIZE=6 PG_MINSIZE=4 OSD_COUNT=6 SCHEME=ec /root/vitastor/tests/test_scrub.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+
+  test_scrub_ec:
+    runs-on: ubuntu-latest
+    needs: build
+    container: ${{env.TEST_IMAGE}}:${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: 3
+      run: SCHEME=ec /root/vitastor/tests/test_scrub.sh
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- $i --------"
+          cat $i
+          echo ""
+        done
+

.gitea/workflows/tests-to-yaml.pl

@@ -0,0 +1,69 @@
+#!/usr/bin/perl
+
+use strict;
+
+for my $line (<>)
+{
+    if ($line =~ /\.\/(test_[^\.]+)/s)
+    {
+        chomp $line;
+        my $test_name = $1;
+        my $timeout = 3;
+        if ($test_name eq 'test_etcd_fail' || $test_name eq 'test_heal' || $test_name eq 'test_add_osd' ||
+            $test_name eq 'test_interrupted_rebalance' || $test_name eq 'test_rebalance_verify')
+        {
+            $timeout = 10;
+        }
+        while ($line =~ /([^\s=]+)=(\S+)/gs)
+        {
+            if ($1 eq 'SCHEME' && $2 eq 'ec')
+            {
+                $test_name .= '_ec';
+            }
+            elsif ($1 eq 'SCHEME' && $2 eq 'xor')
+            {
+                $test_name .= '_xor';
+            }
+            elsif ($1 eq 'IMMEDIATE_COMMIT')
+            {
+                $test_name .= '_imm';
+            }
+            else
+            {
+                $test_name .= '_'.lc($1).'_'.$2;
+            }
+        }
+        $line =~ s!\./test_!/root/vitastor/tests/test_!;
+        # Gitea CI doesn't support artifacts yet, lol
+        #- name: Upload results
+        #  uses: actions/upload-artifact\@v3
+        #  if: always()
+        #  with:
+        #    name: ${test_name}_result
+        #    path: |
+        #      /root/vitastor/testdata
+        #      !/root/vitastor/testdata/*.bin
+        #    retention-days: 5
+        print <<"EOF"
+  $test_name:
+    runs-on: ubuntu-latest
+    needs: build
+    container: \${{env.TEST_IMAGE}}:\${{github.sha}}
+    steps:
+    - name: Run test
+      id: test
+      timeout-minutes: $timeout
+      run: $line
+    - name: Print logs
+      if: always() && steps.test.outcome == 'failure'
+      run: |
+        for i in /root/vitastor/testdata/*.log /root/vitastor/testdata/*.txt; do
+          echo "-------- \$i --------"
+          cat \$i
+          echo ""
+        done
+
+EOF
+;
+    }
+}

CMakeLists.txt

@@ -2,6 +2,6 @@ cmake_minimum_required(VERSION 2.8.12)
 
 project(vitastor)
 
-set(VERSION "0.8.8")
+set(VERSION "0.9.3")
 
 add_subdirectory(src)

csi/Makefile

@@ -1,4 +1,4 @@
-VERSION ?= v0.8.8
+VERSION ?= v0.9.3
 
 all: build push
 

csi/deploy/004-csi-nodeplugin.yaml

@@ -49,7 +49,7 @@ spec:
             capabilities:
               add: ["SYS_ADMIN"]
             allowPrivilegeEscalation: true
-          image: vitalif/vitastor-csi:v0.8.8
+          image: vitalif/vitastor-csi:v0.9.3
           args:
             - "--node=$(NODE_ID)"
             - "--endpoint=$(CSI_ENDPOINT)"

csi/deploy/007-csi-provisioner.yaml

@@ -116,7 +116,7 @@ spec:
             privileged: true
             capabilities:
               add: ["SYS_ADMIN"]
-          image: vitalif/vitastor-csi:v0.8.8
+          image: vitalif/vitastor-csi:v0.9.3
           args:
             - "--node=$(NODE_ID)"
             - "--endpoint=$(CSI_ENDPOINT)"

csi/go.mod

@@ -4,25 +4,10 @@ go 1.15
 
 require (
 	github.com/container-storage-interface/spec v1.4.0
-	github.com/coreos/bbolt v0.0.0-00010101000000-000000000000 // indirect
-	github.com/coreos/etcd v3.3.25+incompatible // indirect
-	github.com/coreos/go-semver v0.3.0 // indirect
-	github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf // indirect
-	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
-	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/gorilla/websocket v1.4.2 // indirect
-	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 // indirect
-	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
-	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
-	github.com/jonboulle/clockwork v0.2.2 // indirect
 	github.com/kubernetes-csi/csi-lib-utils v0.9.1
-	github.com/soheilhy/cmux v0.1.5 // indirect
-	github.com/tmc/grpc-websocket-proxy v0.0.0-20201229170055-e5319fda7802 // indirect
-	github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
-	go.etcd.io/bbolt v0.0.0-00010101000000-000000000000 // indirect
-	go.etcd.io/etcd v3.3.25+incompatible
 	golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/grpc v1.33.1
 	k8s.io/klog v1.0.0
 	k8s.io/utils v0.0.0-20210305010621-2afb4311ab10

csi/go.sum

@@ -31,14 +31,11 @@ github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuy
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/blang/semver v3.5.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -46,25 +43,12 @@ github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMn
 github.com/container-storage-interface/spec v1.2.0/go.mod h1:6URME8mwIBbpVyZV93Ce5St17xBiQJQY67NDsuohiy4=
 github.com/container-storage-interface/spec v1.4.0 h1:ozAshSKxpJnYUfmkpZCTYyF/4MYeYlhdXbAvPvfGmkg=
 github.com/container-storage-interface/spec v1.4.0/go.mod h1:6URME8mwIBbpVyZV93Ce5St17xBiQJQY67NDsuohiy4=
-github.com/coreos/bbolt v1.3.5 h1:XFv7xaq7701j8ZSEzR28VohFYSlyakMyqNMU5FQH6Ac=
-github.com/coreos/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
-github.com/coreos/etcd v3.3.25+incompatible h1:0GQEw6h3YnuOVdtwygkIfJ+Omx0tZ8/QkVyXI4LkbeY=
-github.com/coreos/etcd v3.3.25+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
-github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf h1:iW4rZ826su+pqaw19uhpSCzhj44qo35pNgKFGqzDKkU=
-github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
-github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbpBpLoyyu8B6e44T7hJy6potg=
-github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZgvJUkLughtfhJv5dyTYa91l1fOUCrgjqmcifM=
 github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815/go.mod h1:WwZ+bS3ebgob9U8Nd0kOddGdZWjyMGR8Wziv+TBNwSE=
-github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
-github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/emicklei/go-restful v0.0.0-20170410110728-ff4f55a20633/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
@@ -73,7 +57,6 @@ github.com/evanphx/json-patch v4.9.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLi
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
-github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
@@ -88,14 +71,10 @@ github.com/go-openapi/spec v0.0.0-20160808142527-6aced65f8501/go.mod h1:J8+jY1nA
 github.com/go-openapi/swag v0.0.0-20160704191624-1d0bd113de87/go.mod h1:DXUve3Dpr1UfpPtxFw+EFuQ41HhCWZfha5jSVRG7C7I=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
 github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
-github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
-github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
-github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7 h1:5ZkaAPbicIKTF2I64qf5Fh8Aa83Q/dnOafMYV0OMwjA=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
@@ -113,7 +92,6 @@ github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QD
 github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
-github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
@@ -127,38 +105,24 @@ github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OI
 github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/google/pprof v0.0.0-20191218002539-d4f498aebedc/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
-github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/googleapis/gnostic v0.4.1/go.mod h1:LRhVm6pbyptWbWbuZ38d1eyptfvIytN3ir6b65WBswg=
-github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
-github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
-github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 h1:+9834+KizmvFV7pXQGSXQTsaWhq2GjuNUt0aUU0YBYw=
-github.com/grpc-ecosystem/go-grpc-middleware v1.3.0/go.mod h1:z0ButlSOZa5vEBq9m2m2hlwIgKw+rp3sdCBRoJY+30Y=
-github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
-github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=
-github.com/grpc-ecosystem/grpc-gateway v1.16.0 h1:gmcG1KaJ57LophUzW0Hy8NmPhnMZb4M0+kPpLofRdBo=
-github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
-github.com/jonboulle/clockwork v0.2.2 h1:UOGuzwb1PwsrDAObMuhUnj0p5ULPj8V/xJ7Kx9qUBdQ=
-github.com/jonboulle/clockwork v0.2.2/go.mod h1:Pkfl5aHPm1nk2H9h0bjmnJD/BcgbGXUBGnn1kMkgxc8=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
-github.com/json-iterator/go v1.1.10 h1:Kz6Cvnvv2wGdaG/V8yMvfkmNiXq9Ya2KUv4rouJJr68=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
-github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
-github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
@@ -171,14 +135,11 @@ github.com/kubernetes-csi/csi-lib-utils v0.9.1 h1:sGq6ifVujfMSkfTsMZip44Ttv8SDXv
 github.com/kubernetes-csi/csi-lib-utils v0.9.1/go.mod h1:8E2jVUX9j3QgspwHXa6LwyN7IHQDjW9jX3kwoWnSC+M=
 github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
-github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 h1:I0XW9+e1XWDxdcEniV4rQAIOPUGDq67JSCiRCgGCZLI=
 github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
 github.com/moby/term v0.0.0-20200312100748-672ec06f55cd/go.mod h1:DdlQx2hp0Ss5/fLikoLlEeIYiATotOjgB//nb973jeo=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
-github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
-github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/munnerz/goautoneg v0.0.0-20120707110453-a547fc61f48d/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
@@ -188,38 +149,28 @@ github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+W
 github.com/onsi/ginkgo v1.11.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
 github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
-github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
-github.com/prometheus/client_golang v1.7.1 h1:NTGy1Ja9pByO+xAeH/qiWnLrKtr3hJPNjaVUwnjpdpA=
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/prometheus/client_model v0.2.0 h1:uq5h0d+GuxiXLJLNABMgp2qUWDPiLvgCzz2dUR+/W/M=
 github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
-github.com/prometheus/common v0.10.0 h1:RyRA7RzGXQZiW+tGMr7sxa85G1z0yOpM1qq5c8lNawc=
 github.com/prometheus/common v0.10.0/go.mod h1:Tlit/dnDKsSWFlCLTWaA1cyBgKHSMdTB80sz/V91rCo=
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
-github.com/prometheus/procfs v0.1.3 h1:F0+tqvhOksq22sc6iCHF5WGlWjdwj92p0udFh1VFBS8=
 github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4OA4YeYWdaU=
-github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
-github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
-github.com/soheilhy/cmux v0.1.5 h1:jjzc5WVemNEDTLwv9tlmemhC73tI08BNOIGwBOo10Js=
-github.com/soheilhy/cmux v0.1.5/go.mod h1:T7TcVDs9LWfQgPlPsdngu6I6QIoyIFZDDC6sNE1GqG0=
 github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
 github.com/spf13/pflag v0.0.0-20170130214245-9ff6c6923cff/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
@@ -231,24 +182,11 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/tmc/grpc-websocket-proxy v0.0.0-20201229170055-e5319fda7802 h1:uruHq4dN7GR16kFc5fp3d1RIYzJW5onx8Ybykw2YQFA=
-github.com/tmc/grpc-websocket-proxy v0.0.0-20201229170055-e5319fda7802/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
-github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 h1:eY9dn8+vbi4tKz5Qo6v2eYzo7kUS51QINcR5jNpbZS8=
-github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
-github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-go.etcd.io/bbolt v1.3.5 h1:XAzx9gjCb0Rxj7EoqcClPD1d5ZBxZJk0jbuoPHenBt0=
-go.etcd.io/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
-go.etcd.io/etcd v3.3.25+incompatible h1:V1RzkZJj9LqsJRy+TUBgpWSbZXITLB819lstuTFoZOY=
-go.etcd.io/etcd v3.3.25+incompatible/go.mod h1:yaeTdrJi5lOmYerz05bd8+V7KubZs8YSFZfzsF9A6aI=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
-go.uber.org/atomic v1.4.0 h1:cxzIVoETapQEqDhQu3QfnvXAV4AlzcvUCxkVUFw3+EU=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
-go.uber.org/multierr v1.1.0 h1:HoEmRHQPVSqub6w2z2d2EOVs2fjyFRGyofhKuyDq0QI=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
-go.uber.org/zap v1.10.0 h1:ORx85nbTijNz8ljznvCMR1ZBIPKFn3jQrag10X2AsuM=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -256,7 +194,6 @@ golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -276,8 +213,6 @@ golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCc
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
 golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
-golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -291,26 +226,20 @@ golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb h1:eBmm0M9fYhWpKZLjQUUKka/LtIxf46G4fxeEz5KJr9U=
 golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -326,11 +255,9 @@ golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200622214017-ed371f2e16b4 h1:5/PjkGUjvEU5Gl6BxmvKRPpqo2uNMv4rcHBMwzk/st8=
 golang.org/x/sys v0.0.0-20200622214017-ed371f2e16b4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -341,7 +268,6 @@ golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/time v0.0.0-20191024005414-555d28b269f0 h1:/5xXl8Y5W96D+TtHSlonuFqGHIWVuyCkGJLwGh9JJFs=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20181011042414-1f849cf54d09/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -360,14 +286,10 @@ golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgw
 golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
-golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -388,8 +310,6 @@ google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
 google.golang.org/genproto v0.0.0-20191230161307-f3c370f40bfb/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
-google.golang.org/genproto v0.0.0-20200423170343-7949de9c1215/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 h1:+kGHl1aib/qcwaRi1CbqBZ1rk19r85MNUf8HaBghugY=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/grpc v1.25.1 h1:wdKvqQk7IttEw92GoRyKG2IDrUIpgpj6H6m81yfeMW0=
@@ -415,7 +335,6 @@ gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
@@ -444,5 +363,4 @@ k8s.io/utils v0.0.0-20210305010621-2afb4311ab10/go.mod h1:jPW/WVKK9YHAvNhRxK0md/
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 sigs.k8s.io/structured-merge-diff/v4 v4.0.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
-sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
 sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

csi/src/config.go

@@ -5,7 +5,7 @@ package vitastor
 
 const (
     vitastorCSIDriverName    = "csi.vitastor.io"
-    vitastorCSIDriverVersion = "0.8.8"
+    vitastorCSIDriverVersion = "0.9.3"
 )
 
 // Config struct fills the parameters of request or user input

debian/build-pve-qemu.sh

@@ -0,0 +1,58 @@
+exit
+
+git clone https://git.yourcmc.ru/vitalif/pve-qemu .
+
+# bookworm
+
+docker run -it -v `pwd`/pve-qemu:/root/pve-qemu --name pve-qemu-bullseye debian:bullseye bash
+
+perl -i -pe 's/Types: deb$/Types: deb deb-src/' /etc/apt/sources.list.d/debian.sources
+echo 'deb [arch=amd64] http://download.proxmox.com/debian/pve bookworm pve-no-subscription' >> /etc/apt/sources.list
+echo 'deb https://vitastor.io/debian bookworm main' >> /etc/apt/sources.list
+echo 'APT::Install-Recommends false;' >> /etc/apt/apt.conf
+echo 'ru_RU UTF-8' >> /etc/locale.gen
+echo 'en_US UTF-8' >> /etc/locale.gen
+apt-get update
+apt-get install wget ca-certificates
+wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg
+wget https://vitastor.io/debian/pubkey.gpg -O /etc/apt/trusted.gpg.d/vitastor.gpg
+apt-get update
+apt-get install git devscripts equivs wget mc libjemalloc-dev vitastor-client-dev lintian locales
+mk-build-deps --install ./control
+
+# bullseye
+
+docker run -it -v `pwd`/pve-qemu:/root/pve-qemu --name pve-qemu-bullseye debian:bullseye bash
+
+grep '^deb ' /etc/apt/sources.list | perl -pe 's/^deb /deb-src /' >> /etc/apt/sources.list
+echo 'deb [arch=amd64] http://download.proxmox.com/debian/pve bullseye pve-no-subscription' >> /etc/apt/sources.list
+echo 'deb https://vitastor.io/debian bullseye main' >> /etc/apt/sources.list
+echo 'APT::Install-Recommends false;' >> /etc/apt/apt.conf
+echo 'ru_RU UTF-8' >> /etc/locale.gen
+echo 'en_US UTF-8' >> /etc/locale.gen
+apt-get update
+apt-get install wget
+wget https://enterprise.proxmox.com/debian/proxmox-release-bullseye.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bullseye.gpg
+wget https://vitastor.io/debian/pubkey.gpg -O /etc/apt/trusted.gpg.d/vitastor.gpg
+apt-get update
+apt-get install git devscripts equivs wget mc libjemalloc-dev vitastor-client-dev lintian locales
+mk-build-deps --install ./control
+
+# buster
+
+docker run -it -v `pwd`/pve-qemu:/root/pve-qemu --name pve-qemu-buster debian:buster bash
+
+grep '^deb ' /etc/apt/sources.list | perl -pe 's/^deb /deb-src /' >> /etc/apt/sources.list
+echo 'deb [arch=amd64] http://download.proxmox.com/debian/pve buster pve-no-subscription' >> /etc/apt/sources.list
+echo 'deb https://vitastor.io/debian buster main' >> /etc/apt/sources.list
+echo 'deb http://deb.debian.org/debian buster-backports main' >> /etc/apt/sources.list
+echo 'APT::Install-Recommends false;' >> /etc/apt/apt.conf
+echo 'ru_RU UTF-8' >> /etc/locale.gen
+echo 'en_US UTF-8' >> /etc/locale.gen
+apt-get update
+apt-get install wget ca-certificates
+wget http://download.proxmox.com/debian/proxmox-ve-release-6.x.gpg -O /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg
+wget https://vitastor.io/debian/pubkey.gpg -O /etc/apt/trusted.gpg.d/vitastor.gpg
+apt-get update
+apt-get install git devscripts equivs wget mc libjemalloc-dev vitastor-client-dev lintian locales
+mk-build-deps --install ./control

debian/build-vitastor-bookworm.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+cat < vitastor.Dockerfile > ../Dockerfile
+cd ..
+mkdir -p packages
+sudo podman build --build-arg REL=bookworm -v `pwd`/packages:/root/packages -f Dockerfile .
+rm Dockerfile

debian/changelog

@@ -1,10 +1,10 @@
-vitastor (0.8.8-1) unstable; urgency=medium
+vitastor (0.9.3-1) unstable; urgency=medium
 
   * Bugfixes
 
  -- Vitaliy Filippov <vitalif@yourcmc.ru>  Fri, 03 Jun 2022 02:09:44 +0300
 
-vitastor (0.8.8-1) unstable; urgency=medium
+vitastor (0.9.3-1) unstable; urgency=medium
 
   * Implement NFS proxy
   * Add documentation

debian/patched-qemu.Dockerfile

@@ -1,4 +1,4 @@
-# Build patched QEMU for Debian Buster or Bullseye/Sid inside a container
+# Build patched QEMU for Debian inside a container
 # cd ..; podman build --build-arg REL=bullseye -v `pwd`/packages:/root/packages -f debian/patched-qemu.Dockerfile .
 
 ARG REL=
@@ -15,17 +15,19 @@ RUN if [ "$REL" = "buster" -o "$REL" = "bullseye" ]; then \
         echo 'Pin-Priority: 500' >> /etc/apt/preferences; \
     fi; \
     grep '^deb ' /etc/apt/sources.list | perl -pe 's/^deb/deb-src/' >> /etc/apt/sources.list; \
+    perl -i -pe 's/Types: deb$/Types: deb deb-src/' /etc/apt/sources.list.d/debian.sources || true; \
     echo 'APT::Install-Recommends false;' >> /etc/apt/apt.conf; \
     echo 'APT::Install-Suggests false;' >> /etc/apt/apt.conf
 
 RUN apt-get update
-RUN apt-get -y install qemu fio liburing1 liburing-dev libgoogle-perftools-dev devscripts
+RUN apt-get -y install fio liburing-dev libgoogle-perftools-dev devscripts
 RUN apt-get -y build-dep qemu
 # To build a custom version
 #RUN cp /root/packages/qemu-orig/* /root
 RUN apt-get --download-only source qemu
 
-ADD patches/qemu-5.0-vitastor.patch patches/qemu-5.1-vitastor.patch patches/qemu-6.1-vitastor.patch src/qemu_driver.c /root/vitastor/patches/
+ADD patches /root/vitastor/patches
+ADD src/qemu_driver.c /root/vitastor/src/qemu_driver.c
 RUN set -e; \
     apt-get install -y wget; \
     wget -q -O /etc/apt/trusted.gpg.d/vitastor.gpg https://vitastor.io/debian/pubkey.gpg; \
@@ -37,23 +39,14 @@ RUN set -e; \
     rm -rf /root/packages/qemu-$REL/*; \
     cd /root/packages/qemu-$REL; \
     dpkg-source -x /root/qemu*.dsc; \
-    if ls -d /root/packages/qemu-$REL/qemu-5.0*; then \
-        D=$(ls -d /root/packages/qemu-$REL/qemu-5.0*); \
-        cp /root/vitastor/patches/qemu-5.0-vitastor.patch $D/debian/patches; \
-        echo qemu-5.0-vitastor.patch >> $D/debian/patches/series; \
-    elif ls /root/packages/qemu-$REL/qemu-6.1*; then \
-        D=$(ls -d /root/packages/qemu-$REL/qemu-6.1*); \
-        cp /root/vitastor/patches/qemu-6.1-vitastor.patch $D/debian/patches; \
-        echo qemu-6.1-vitastor.patch >> $D/debian/patches/series; \
-    else \
-        cp /root/vitastor/patches/qemu-5.1-vitastor.patch /root/packages/qemu-$REL/qemu-*/debian/patches; \
-        P=`ls -d /root/packages/qemu-$REL/qemu-*/debian/patches`; \
-        echo qemu-5.1-vitastor.patch >> $P/series; \
-    fi; \
+    QEMU_VER=$(ls -d qemu*/ | perl -pe 's!^.*(\d+\.\d+).*!$1!'); \
+    D=$(ls -d qemu*/); \
+    cp /root/vitastor/patches/qemu-$QEMU_VER-vitastor.patch ./qemu-*/debian/patches; \
+    echo qemu-$QEMU_VER-vitastor.patch >> $D/debian/patches/series; \
     cd /root/packages/qemu-$REL/qemu-*/; \
     quilt push -a; \
     quilt add block/vitastor.c; \
-    cp /root/vitastor/patches/qemu_driver.c block/vitastor.c; \
+    cp /root/vitastor/src/qemu_driver.c block/vitastor.c; \
     quilt refresh; \
     V=$(head -n1 debian/changelog | perl -pe 's/^.*\((.*?)(~bpo[\d\+]*)?\).*$/$1/')+vitastor1; \
     DEBEMAIL="Vitaliy Filippov <vitalif@yourcmc.ru>" dch -D $REL -v $V 'Plug Vitastor block driver'; \

debian/vitastor.Dockerfile

@@ -1,4 +1,4 @@
-# Build Vitastor packages for Debian Buster or Bullseye/Sid inside a container
+# Build Vitastor packages for Debian inside a container
 # cd ..; podman build --build-arg REL=bullseye -v `pwd`/packages:/root/packages -f debian/vitastor.Dockerfile .
 
 ARG REL=
@@ -15,11 +15,12 @@ RUN if [ "$REL" = "buster" -o "$REL" = "bullseye" ]; then \
         echo 'Pin-Priority: 500' >> /etc/apt/preferences; \
     fi; \
     grep '^deb ' /etc/apt/sources.list | perl -pe 's/^deb/deb-src/' >> /etc/apt/sources.list; \
+    perl -i -pe 's/Types: deb$/Types: deb deb-src/' /etc/apt/sources.list.d/debian.sources || true; \
     echo 'APT::Install-Recommends false;' >> /etc/apt/apt.conf; \
     echo 'APT::Install-Suggests false;' >> /etc/apt/apt.conf
 
 RUN apt-get update
-RUN apt-get -y install fio liburing1 liburing-dev libgoogle-perftools-dev devscripts
+RUN apt-get -y install fio liburing-dev libgoogle-perftools-dev devscripts
 RUN apt-get -y build-dep fio
 RUN apt-get --download-only source fio
 RUN apt-get update && apt-get -y install libjerasure-dev cmake libibverbs-dev libisal-dev
@@ -34,8 +35,8 @@ RUN set -e -x; \
     mkdir -p /root/packages/vitastor-$REL; \
     rm -rf /root/packages/vitastor-$REL/*; \
     cd /root/packages/vitastor-$REL; \
-    cp -r /root/vitastor vitastor-0.8.8; \
-    cd vitastor-0.8.8; \
+    cp -r /root/vitastor vitastor-0.9.3; \
+    cd vitastor-0.9.3; \
     ln -s /root/fio-build/fio-*/ ./fio; \
     FIO=$(head -n1 fio/debian/changelog | perl -pe 's/^.*\((.*?)\).*$/$1/'); \
     ls /usr/include/linux/raw.h || cp ./debian/raw.h /usr/include/linux/raw.h; \
@@ -48,8 +49,8 @@ RUN set -e -x; \
     rm -rf a b; \
     echo "dep:fio=$FIO" > debian/fio_version; \
     cd /root/packages/vitastor-$REL; \
-    tar --sort=name --mtime='2020-01-01' --owner=0 --group=0 --exclude=debian -cJf vitastor_0.8.8.orig.tar.xz vitastor-0.8.8; \
-    cd vitastor-0.8.8; \
+    tar --sort=name --mtime='2020-01-01' --owner=0 --group=0 --exclude=debian -cJf vitastor_0.9.3.orig.tar.xz vitastor-0.9.3; \
+    cd vitastor-0.9.3; \
     V=$(head -n1 debian/changelog | perl -pe 's/^.*\((.*?)\).*$/$1/'); \
     DEBFULLNAME="Vitaliy Filippov <vitalif@yourcmc.ru>" dch -D $REL -v "$V""$REL" "Rebuild for $REL"; \
     DEB_BUILD_OPTIONS=nocheck dpkg-buildpackage --jobs=auto -sa; \

docs/config.en.md

@@ -21,7 +21,7 @@ Configuration parameters can be set in 3 places:
   mon, fio and QEMU options, OpenStack/Proxmox/etc configuration. The latter
   doesn't allow to set all variables directly, but it allows to override the
   configuration file and set everything you need inside it.
-- OSD superblocks created by [vitastor-disk](../usage/disk.en.md) contain
+- OSD superblocks created by [vitastor-disk](usage/disk.en.md) contain
   primarily disk layout parameters of specific OSDs. In fact, these parameters
   are automatically passed into the command line of vitastor-osd process, so
   they have the same "status" as command-line parameters.

docs/config.ru.md

@@ -23,7 +23,7 @@
   монитора, опциях fio и QEMU, настроек OpenStack, Proxmox и т.п. Последние,
   как правило, не включают полный набор параметров напрямую, но позволяют
   определить путь к файлу конфигурации и задать любые параметры в нём.
-- В суперблоке OSD, записываемом [vitastor-disk](../usage/disk.ru.md) - параметры,
+- В суперблоке OSD, записываемом [vitastor-disk](usage/disk.ru.md) - параметры,
   связанные с дисковым форматом и с этим конкретным OSD. На самом деле,
   при запуске OSD эти параметры автоматически передаются в командную строку
   процесса vitastor-osd, то есть по "статусу" они эквивалентны параметрам

docs/config/common.en.md

@@ -25,11 +25,16 @@ running if required parameters are specified.
 ## etcd_address
 
 - Type: string or array of strings
+- Can be changed online: yes
 
 etcd connection endpoint(s). Multiple endpoints may be delimited by "," or
 specified in a JSON array `["10.0.115.10:2379/v3","10.0.115.11:2379/v3"]`.
 Note that https is not supported for etcd connections yet.
 
+etcd connection endpoints can be changed online by updating global
+configuration in etcd itself - this allows to switch the cluster to new
+etcd addresses without downtime.
+
 ## etcd_prefix
 
 - Type: string
@@ -42,5 +47,6 @@ example, use a single etcd cluster for multiple Vitastor clusters.
 
 - Type: integer
 - Default: 0
+- Can be changed online: yes
 
 Log level. Raise if you want more verbose output.

docs/config/common.ru.md

@@ -24,10 +24,14 @@
 ## etcd_address
 
 - Тип: строка или массив строк
+- Можно менять на лету: да
 
 Адрес(а) подключения к etcd. Несколько адресов могут разделяться запятой
 или указываться в виде JSON-массива `["10.0.115.10:2379/v3","10.0.115.11:2379/v3"]`.
 
+Адреса подключения к etcd можно поменять на лету, обновив конфигурацию в
+самом etcd - это позволяет переключить кластер на новые etcd без остановки.
+
 ## etcd_prefix
 
 - Тип: строка
@@ -41,5 +45,6 @@
 
 - Тип: целое число
 - Значение по умолчанию: 0
+- Можно менять на лету: да
 
 Уровень логгирования. Повысьте, если хотите более подробный вывод.

docs/config/network.en.md

@@ -153,6 +153,7 @@ operations.
 - Type: seconds
 - Default: 5
 - Minimum: 1
+- Can be changed online: yes
 
 Interval before attempting to reconnect to an unavailable OSD.
 
@@ -161,6 +162,7 @@ Interval before attempting to reconnect to an unavailable OSD.
 - Type: seconds
 - Default: 5
 - Minimum: 1
+- Can be changed online: yes
 
 Timeout for OSD connection attempts.
 
@@ -169,6 +171,7 @@ Timeout for OSD connection attempts.
 - Type: seconds
 - Default: 5
 - Minimum: 1
+- Can be changed online: yes
 
 OSD connection inactivity time after which clients and other OSDs send
 keepalive requests to check state of the connection.
@@ -178,6 +181,7 @@ keepalive requests to check state of the connection.
 - Type: seconds
 - Default: 5
 - Minimum: 1
+- Can be changed online: yes
 
 Maximum time to wait for OSD keepalive responses. If an OSD doesn't respond
 within this time, the connection to it is dropped and a reconnection attempt
@@ -188,6 +192,7 @@ is scheduled.
 - Type: milliseconds
 - Default: 500
 - Minimum: 50
+- Can be changed online: yes
 
 OSDs respond to clients with a special error code when they receive I/O
 requests for a PG that's not synchronized and started. This parameter sets
@@ -197,6 +202,7 @@ the time for the clients to wait before re-attempting such I/O requests.
 
 - Type: integer
 - Default: 5
+- Can be changed online: yes
 
 Maximum number of attempts for etcd requests which can't be retried
 indefinitely.
@@ -205,6 +211,7 @@ indefinitely.
 
 - Type: milliseconds
 - Default: 1000
+- Can be changed online: yes
 
 Timeout for etcd requests which should complete quickly, like lease refresh.
 
@@ -212,6 +219,7 @@ Timeout for etcd requests which should complete quickly, like lease refresh.
 
 - Type: milliseconds
 - Default: 5000
+- Can be changed online: yes
 
 Timeout for etcd requests which are allowed to wait for some time.
 
@@ -219,6 +227,7 @@ Timeout for etcd requests which are allowed to wait for some time.
 
 - Type: seconds
 - Default: max(30, etcd_report_interval*2)
+- Can be changed online: yes
 
 Timeout for etcd connection HTTP Keep-Alive. Should be higher than
 etcd_report_interval to guarantee that keepalive actually works.
@@ -227,6 +236,7 @@ etcd_report_interval to guarantee that keepalive actually works.
 
 - Type: seconds
 - Default: 30
+- Can be changed online: yes
 
 etcd websocket ping interval required to keep the connection alive and
 detect disconnections quickly.
@@ -235,6 +245,7 @@ detect disconnections quickly.
 
 - Type: integer
 - Default: 33554432
+- Can be changed online: yes
 
 Without immediate_commit=all this parameter sets the limit of "dirty"
 (not committed by fsync) data allowed by the client before forcing an

docs/config/network.ru.md

@@ -161,6 +161,7 @@ OSD в любом случае согласовывают реальное зн
 - Тип: секунды
 - Значение по умолчанию: 5
 - Минимальное значение: 1
+- Можно менять на лету: да
 
 Время ожидания перед повторной попыткой соединиться с недоступным OSD.
 
@@ -169,6 +170,7 @@ OSD в любом случае согласовывают реальное зн
 - Тип: секунды
 - Значение по умолчанию: 5
 - Минимальное значение: 1
+- Можно менять на лету: да
 
 Максимальное время ожидания попытки соединения с OSD.
 
@@ -177,6 +179,7 @@ OSD в любом случае согласовывают реальное зн
 - Тип: секунды
 - Значение по умолчанию: 5
 - Минимальное значение: 1
+- Можно менять на лету: да
 
 Время неактивности соединения с OSD, после которого клиенты или другие OSD
 посылают запрос проверки состояния соединения.
@@ -186,6 +189,7 @@ OSD в любом случае согласовывают реальное зн
 - Тип: секунды
 - Значение по умолчанию: 5
 - Минимальное значение: 1
+- Можно менять на лету: да
 
 Максимальное время ожидания ответа на запрос проверки состояния соединения.
 Если OSD не отвечает за это время, соединение отключается и производится
@@ -196,6 +200,7 @@ OSD в любом случае согласовывают реальное зн
 - Тип: миллисекунды
 - Значение по умолчанию: 500
 - Минимальное значение: 50
+- Можно менять на лету: да
 
 Когда OSD получают от клиентов запросы ввода-вывода, относящиеся к не
 поднятым на данный момент на них PG, либо к PG в процессе синхронизации,
@@ -207,6 +212,7 @@ OSD в любом случае согласовывают реальное зн
 
 - Тип: целое число
 - Значение по умолчанию: 5
+- Можно менять на лету: да
 
 Максимальное число попыток выполнения запросов к etcd для тех запросов,
 которые нельзя повторять бесконечно.
@@ -215,6 +221,7 @@ OSD в любом случае согласовывают реальное зн
 
 - Тип: миллисекунды
 - Значение по умолчанию: 1000
+- Можно менять на лету: да
 
 Максимальное время выполнения запросов к etcd, которые должны завершаться
 быстро, таких, как обновление резервации (lease).
@@ -223,6 +230,7 @@ OSD в любом случае согласовывают реальное зн
 
 - Тип: миллисекунды
 - Значение по умолчанию: 5000
+- Можно менять на лету: да
 
 Максимальное время выполнения запросов к etcd, для которых не обязательно
 гарантировать быстрое выполнение.
@@ -231,6 +239,7 @@ OSD в любом случае согласовывают реальное зн
 
 - Тип: секунды
 - Значение по умолчанию: max(30, etcd_report_interval*2)
+- Можно менять на лету: да
 
 Таймаут для HTTP Keep-Alive в соединениях к etcd. Должен быть больше, чем
 etcd_report_interval, чтобы keepalive гарантированно работал.
@@ -239,6 +248,7 @@ etcd_report_interval, чтобы keepalive гарантированно рабо
 
 - Тип: секунды
 - Значение по умолчанию: 30
+- Можно менять на лету: да
 
 Интервал проверки живости вебсокет-подключений к etcd.
 
@@ -246,6 +256,7 @@ etcd_report_interval, чтобы keepalive гарантированно рабо
 
 - Тип: целое число
 - Значение по умолчанию: 33554432
+- Можно менять на лету: да
 
 При работе без immediate_commit=all - это лимит объёма "грязных" (не
 зафиксированных fsync-ом) данных, при достижении которого клиент будет

docs/config/osd.en.md

@@ -7,7 +7,8 @@
 # Runtime OSD Parameters
 
 These parameters only apply to OSDs, are not fixed at the moment of OSD drive
-initialization and can be changed with an OSD restart.
+initialization and can be changed - either with an OSD restart or, for some of
+them, even without restarting by updating configuration in etcd.
 
 - [etcd_report_interval](#etcd_report_interval)
 - [run_primary](#run_primary)
@@ -38,6 +39,14 @@ initialization and can be changed with an OSD restart.
 - [throttle_target_parallelism](#throttle_target_parallelism)
 - [throttle_threshold_us](#throttle_threshold_us)
 - [osd_memlock](#osd_memlock)
+- [auto_scrub](#auto_scrub)
+- [no_scrub](#no_scrub)
+- [scrub_interval](#scrub_interval)
+- [scrub_queue_depth](#scrub_queue_depth)
+- [scrub_sleep](#scrub_sleep)
+- [scrub_list_limit](#scrub_list_limit)
+- [scrub_find_best](#scrub_find_best)
+- [scrub_ec_max_bruteforce](#scrub_ec_max_bruteforce)
 
 ## etcd_report_interval
 
@@ -91,6 +100,7 @@ OSD by hand.
 
 - Type: seconds
 - Default: 5
+- Can be changed online: yes
 
 Time interval at which automatic fsyncs/flushes are issued by each OSD when
 the immediate_commit mode if disabled. fsyncs are required because without
@@ -103,6 +113,7 @@ issue fsyncs at all.
 
 - Type: integer
 - Default: 128
+- Can be changed online: yes
 
 Same as autosync_interval, but sets the maximum number of uncommitted write
 operations before issuing an fsync operation internally.
@@ -111,6 +122,7 @@ operations before issuing an fsync operation internally.
 
 - Type: integer
 - Default: 4
+- Can be changed online: yes
 
 Maximum recovery operations per one primary OSD at any given moment of time.
 Currently it's the only parameter available to tune the speed or recovery
@@ -120,6 +132,7 @@ and rebalancing, but it's planned to implement more.
 
 - Type: integer
 - Default: 128
+- Can be changed online: yes
 
 Number of recovery operations before switching to recovery of the next PG.
 The idea is to mix all PGs during recovery for more even space and load
@@ -130,6 +143,7 @@ Degraded PGs are anyway scanned first.
 
 - Type: integer
 - Default: 16
+- Can be changed online: yes
 
 Maximum number of recovery operations before issuing an additional fsync.
 
@@ -145,6 +159,7 @@ the underlying device. This may be useful for recovery purposes.
 
 - Type: boolean
 - Default: false
+- Can be changed online: yes
 
 Disable automatic background recovery of objects. Note that it doesn't
 affect implicit recovery of objects happening during writes - a write is
@@ -154,6 +169,7 @@ always made to a full set of at least pg_minsize OSDs.
 
 - Type: boolean
 - Default: false
+- Can be changed online: yes
 
 Disable background movement of data between different OSDs. Disabling it
 means that PGs in the `has_misplaced` state will be left in it indefinitely.
@@ -162,6 +178,7 @@ means that PGs in the `has_misplaced` state will be left in it indefinitely.
 
 - Type: seconds
 - Default: 3
+- Can be changed online: yes
 
 Time interval at which OSDs print simple human-readable operation
 statistics on stdout.
@@ -170,6 +187,7 @@ statistics on stdout.
 
 - Type: seconds
 - Default: 10
+- Can be changed online: yes
 
 Time interval at which OSDs dump slow or stuck operations on stdout, if
 they're any. Also it's the time after which an operation is considered
@@ -179,6 +197,7 @@ they're any. Also it's the time after which an operation is considered
 
 - Type: seconds
 - Default: 60
+- Can be changed online: yes
 
 Number of seconds after which a deleted inode is removed from OSD statistics.
 
@@ -186,6 +205,7 @@ Number of seconds after which a deleted inode is removed from OSD statistics.
 
 - Type: integer
 - Default: 128
+- Can be changed online: yes
 
 Parallel client write operation limit per one OSD. Operations that exceed
 this limit are pushed to a temporary queue instead of being executed
@@ -195,6 +215,7 @@ immediately.
 
 - Type: integer
 - Default: 1
+- Can be changed online: yes
 
 Flusher is a micro-thread that moves data from the journal to the data
 area of the device. Their number is auto-tuned between minimum and maximum.
@@ -204,6 +225,7 @@ Minimum number is set by this parameter.
 
 - Type: integer
 - Default: 256
+- Can be changed online: yes
 
 Maximum number of journal flushers (see above min_flusher_count).
 
@@ -260,6 +282,7 @@ Most (99%) other SSDs don't need this option.
 
 - Type: boolean
 - Default: false
+- Can be changed online: yes
 
 Enable soft throttling of small journaled writes. Useful for hybrid OSDs
 with fast journal/metadata devices and slow data devices. The idea is that
@@ -277,6 +300,7 @@ fills up.
 
 - Type: integer
 - Default: 100
+- Can be changed online: yes
 
 Target maximum number of throttled operations per second under the condition
 of full journal. Set it to approximate random write iops of your data devices
@@ -286,6 +310,7 @@ of full journal. Set it to approximate random write iops of your data devices
 
 - Type: integer
 - Default: 100
+- Can be changed online: yes
 
 Target maximum bandwidth in MB/s of throttled operations per second under
 the condition of full journal. Set it to approximate linear write
@@ -295,6 +320,7 @@ performance of your data devices (HDDs).
 
 - Type: integer
 - Default: 1
+- Can be changed online: yes
 
 Target maximum parallelism of throttled operations under the condition of
 full journal. Set it to approximate internal parallelism of your data
@@ -304,6 +330,7 @@ devices (1 for HDDs, 4-8 for SSDs).
 
 - Type: microseconds
 - Default: 50
+- Can be changed online: yes
 
 Minimal computed delay to be applied to throttled operations. Usually
 doesn't need to be changed.
@@ -313,4 +340,103 @@ doesn't need to be changed.
 - Type: boolean
 - Default: false
 
-Lock all OSD memory to prevent it from being unloaded into swap with mlockall(). Requires sufficient ulimit -l (max locked memory).
+Lock all OSD memory to prevent it from being unloaded into swap with
+mlockall(). Requires sufficient ulimit -l (max locked memory).
+
+## auto_scrub
+
+- Type: boolean
+- Default: false
+- Can be changed online: yes
+
+Data scrubbing is the process of background verification of copies to find
+and repair corrupted blocks. It's not run automatically by default since
+it's a new feature. Set this parameter to true to enable automatic scrubs.
+
+This parameter makes OSDs automatically schedule data scrubbing of clean PGs
+every `scrub_interval` (see below). You can also start/schedule scrubbing
+manually by setting `next_scrub` JSON key to the desired UNIX time of the
+next scrub in `/pg/history/...` values in etcd.
+
+## no_scrub
+
+- Type: boolean
+- Default: false
+- Can be changed online: yes
+
+Temporarily disable scrubbing and stop running scrubs.
+
+## scrub_interval
+
+- Type: string
+- Default: 30d
+- Can be changed online: yes
+
+Default automatic scrubbing interval for all pools. Numbers without suffix
+are treated as seconds, possible unit suffixes include 's' (seconds),
+'m' (minutes), 'h' (hours), 'd' (days), 'M' (months) and 'y' (years).
+
+## scrub_queue_depth
+
+- Type: integer
+- Default: 1
+- Can be changed online: yes
+
+Number of parallel scrubbing operations per one OSD.
+
+## scrub_sleep
+
+- Type: milliseconds
+- Default: 0
+- Can be changed online: yes
+
+Additional interval between two consecutive scrubbing operations on one OSD.
+Can be used to slow down scrubbing if it affects user load too much.
+
+## scrub_list_limit
+
+- Type: integer
+- Default: 1000
+- Can be changed online: yes
+
+Number of objects to list in one listing operation during scrub.
+
+## scrub_find_best
+
+- Type: boolean
+- Default: true
+- Can be changed online: yes
+
+Find and automatically restore best versions of objects with unmatched
+copies. In replicated setups, the best version is the version with most
+matching replicas. In EC setups, the best version is the subset of data
+and parity chunks without mismatches.
+
+The hypothetical situation where you might want to disable it is when
+you have 3 replicas and you are paranoid that 2 HDDs out of 3 may silently
+corrupt an object in the same way (for example, zero it out) and only
+1 HDD will remain good. In this case disabling scrub_find_best may help
+you to recover the data! See also scrub_ec_max_bruteforce below.
+
+## scrub_ec_max_bruteforce
+
+- Type: integer
+- Default: 100
+- Can be changed online: yes
+
+Vitastor can locate corrupted chunks in EC setups with more than 1 parity
+chunk by brute-forcing all possible error locations. This configuration
+value limits the maximum number of checked combinations. You can try to
+increase it if you have EC N+K setup with N and K large enough for
+combination count `C(N+K-1, K-1) = (N+K-1)! / (K-1)! / N!` to be greater
+than the default 100.
+
+If there are too many possible combinations or if multiple combinations give
+correct results then objects are marked inconsistent and aren't recovered
+automatically.
+
+In replicated setups bruteforcing isn't needed, Vitastor just assumes that
+the variant with most available equal copies is correct. For example, if
+you have 3 replicas and 1 of them differs, this one is considered to be
+corrupted. But if there is no "best" version with more copies than all
+others have then the object is also marked as inconsistent.

docs/config/osd.ru.md

@@ -8,7 +8,8 @@
 
 Данные параметры используются только OSD, но, в отличие от дисковых параметров,
 не фиксируются в момент инициализации дисков OSD и могут быть изменены в любой
-момент с перезапуском OSD.
+момент с помощью перезапуска OSD, а некоторые и без перезапуска, с помощью
+изменения конфигурации в etcd.
 
 - [etcd_report_interval](#etcd_report_interval)
 - [run_primary](#run_primary)
@@ -39,6 +40,14 @@
 - [throttle_target_parallelism](#throttle_target_parallelism)
 - [throttle_threshold_us](#throttle_threshold_us)
 - [osd_memlock](#osd_memlock)
+- [auto_scrub](#auto_scrub)
+- [no_scrub](#no_scrub)
+- [scrub_interval](#scrub_interval)
+- [scrub_queue_depth](#scrub_queue_depth)
+- [scrub_sleep](#scrub_sleep)
+- [scrub_list_limit](#scrub_list_limit)
+- [scrub_find_best](#scrub_find_best)
+- [scrub_ec_max_bruteforce](#scrub_ec_max_bruteforce)
 
 ## etcd_report_interval
 
@@ -93,6 +102,7 @@ RUNNING), подходящий под заданную маску. Также н
 
 - Тип: секунды
 - Значение по умолчанию: 5
+- Можно менять на лету: да
 
 Временной интервал отправки автоматических fsync-ов (операций очистки кэша)
 каждым OSD для случая, когда режим immediate_commit отключён. fsync-и нужны
@@ -105,6 +115,7 @@ OSD, чтобы успевать очищать журнал - без них OSD
 
 - Тип: целое число
 - Значение по умолчанию: 128
+- Можно менять на лету: да
 
 Аналогично autosync_interval, но задаёт не временной интервал, а
 максимальное количество незафиксированных операций записи перед
@@ -114,6 +125,7 @@ OSD, чтобы успевать очищать журнал - без них OSD
 
 - Тип: целое число
 - Значение по умолчанию: 4
+- Можно менять на лету: да
 
 Максимальное число операций восстановления на одном первичном OSD в любой
 момент времени. На данный момент единственный параметр, который можно менять
@@ -124,6 +136,7 @@ OSD, чтобы успевать очищать журнал - без них OSD
 
 - Тип: целое число
 - Значение по умолчанию: 128
+- Можно менять на лету: да
 
 Число операций восстановления перед переключением на восстановление другой PG.
 Идея заключается в том, чтобы восстанавливать все PG одновременно для более
@@ -135,6 +148,7 @@ OSD, чтобы успевать очищать журнал - без них OSD
 
 - Тип: целое число
 - Значение по умолчанию: 16
+- Можно менять на лету: да
 
 Максимальное число операций восстановления перед дополнительным fsync.
 
@@ -150,6 +164,7 @@ OSD, чтобы успевать очищать журнал - без них OSD
 
 - Тип: булево (да/нет)
 - Значение по умолчанию: false
+- Можно менять на лету: да
 
 Отключить автоматическое фоновое восстановление объектов. Обратите внимание,
 что эта опция не отключает восстановление объектов, происходящее при
@@ -160,6 +175,7 @@ OSD.
 
 - Тип: булево (да/нет)
 - Значение по умолчанию: false
+- Можно менять на лету: да
 
 Отключить фоновое перемещение объектов между разными OSD. Отключение
 означает, что PG, находящиеся в состоянии `has_misplaced`, будут оставлены
@@ -169,6 +185,7 @@ OSD.
 
 - Тип: секунды
 - Значение по умолчанию: 3
+- Можно менять на лету: да
 
 Временной интервал, с которым OSD печатают простую человекочитаемую
 статистику выполнения операций в стандартный вывод.
@@ -177,6 +194,7 @@ OSD.
 
 - Тип: секунды
 - Значение по умолчанию: 10
+- Можно менять на лету: да
 
 Временной интервал, с которым OSD выводят в стандартный вывод список
 медленных или зависших операций, если таковые имеются. Также время, при
@@ -186,6 +204,7 @@ OSD.
 
 - Тип: секунды
 - Значение по умолчанию: 60
+- Можно менять на лету: да
 
 Число секунд, через которое удалённые инод удаляется и из статистики OSD.
 
@@ -193,6 +212,7 @@ OSD.
 
 - Тип: целое число
 - Значение по умолчанию: 128
+- Можно менять на лету: да
 
 Максимальное число одновременных клиентских операций записи на один OSD.
 Операции, превышающие этот лимит, не исполняются сразу, а сохраняются во
@@ -202,6 +222,7 @@ OSD.
 
 - Тип: целое число
 - Значение по умолчанию: 1
+- Можно менять на лету: да
 
 Flusher - это микро-поток (корутина), которая копирует данные из журнала в
 основную область устройства данных. Их число настраивается динамически между
@@ -211,6 +232,7 @@ Flusher - это микро-поток (корутина), которая коп
 
 - Тип: целое число
 - Значение по умолчанию: 256
+- Можно менять на лету: да
 
 Максимальное число микро-потоков очистки журнала (см. выше min_flusher_count).
 
@@ -270,6 +292,7 @@ Flusher - это микро-поток (корутина), которая коп
 
 - Тип: булево (да/нет)
 - Значение по умолчанию: false
+- Можно менять на лету: да
 
 Разрешить мягкое ограничение скорости журналируемой записи. Полезно для
 гибридных OSD с быстрыми устройствами метаданных и медленными устройствами
@@ -288,6 +311,7 @@ Flusher - это микро-поток (корутина), которая коп
 
 - Тип: целое число
 - Значение по умолчанию: 100
+- Можно менять на лету: да
 
 Расчётное максимальное число ограничиваемых операций в секунду при условии
 отсутствия свободного места в журнале. Устанавливайте приблизительно равным
@@ -298,6 +322,7 @@ Flusher - это микро-поток (корутина), которая коп
 
 - Тип: целое число
 - Значение по умолчанию: 100
+- Можно менять на лету: да
 
 Расчётный максимальный размер в МБ/с ограничиваемых операций в секунду при
 условии отсутствия свободного места в журнале. Устанавливайте приблизительно
@@ -308,6 +333,7 @@ Flusher - это микро-поток (корутина), которая коп
 
 - Тип: целое число
 - Значение по умолчанию: 1
+- Можно менять на лету: да
 
 Расчётный максимальный параллелизм ограничиваемых операций в секунду при
 условии отсутствия свободного места в журнале. Устанавливайте приблизительно
@@ -318,6 +344,7 @@ Flusher - это микро-поток (корутина), которая коп
 
 - Тип: микросекунды
 - Значение по умолчанию: 50
+- Можно менять на лету: да
 
 Минимальная применимая к ограничиваемым операциям задержка. Обычно не
 требует изменений.
@@ -327,4 +354,113 @@ Flusher - это микро-поток (корутина), которая коп
 - Тип: булево (да/нет)
 - Значение по умолчанию: false
 
-Блокировать всю память OSD с помощью mlockall, чтобы запретить её выгрузку в пространство подкачки. Требует достаточного значения ulimit -l (лимита заблокированной памяти).
+Блокировать всю память OSD с помощью mlockall, чтобы запретить её выгрузку
+в пространство подкачки. Требует достаточного значения ulimit -l (лимита
+заблокированной памяти).
+
+## auto_scrub
+
+- Тип: булево (да/нет)
+- Значение по умолчанию: false
+- Можно менять на лету: да
+
+Скраб - процесс фоновой проверки копий данных, предназначенный, чтобы
+находить и исправлять повреждённые блоки. По умолчанию эти проверки ещё не
+запускаются автоматически, так как являются новой функцией. Чтобы включить
+автоматическое планирование скрабов, установите данный параметр в true.
+
+Включённый параметр заставляет OSD автоматически планировать фоновую
+проверку чистых PG раз в `scrub_interval` (см. ниже). Вы также можете
+запустить или запланировать проверку вручную, установив значение ключа JSON
+`next_scrub` внутри ключей etcd `/pg/history/...` в UNIX-время следующей
+желаемой проверки.
+
+## no_scrub
+
+- Тип: булево (да/нет)
+- Значение по умолчанию: false
+- Можно менять на лету: да
+
+Временно отключить и остановить запущенные скрабы.
+
+## scrub_interval
+
+- Тип: строка
+- Значение по умолчанию: 30d
+- Можно менять на лету: да
+
+Интервал автоматической фоновой проверки по умолчанию для всех пулов.
+Значения без указанной единицы измерения считаются в секундах, допустимые
+символы единиц измерения в конце: 's' (секунды),
+'m' (минуты), 'h' (часы), 'd' (дни), 'M' (месяца) или 'y' (годы).
+
+## scrub_queue_depth
+
+- Тип: целое число
+- Значение по умолчанию: 1
+- Можно менять на лету: да
+
+Число параллельных операций фоновой проверки на один OSD.
+
+## scrub_sleep
+
+- Тип: миллисекунды
+- Значение по умолчанию: 0
+- Можно менять на лету: да
+
+Дополнительный интервал ожидания после фоновой проверки каждого объекта на
+одном OSD. Может использоваться для замедления скраба, если он слишком
+сильно влияет на пользовательскую нагрузку.
+
+## scrub_list_limit
+
+- Тип: целое число
+- Значение по умолчанию: 1000
+- Можно менять на лету: да
+
+Размер загружаемых за одну операцию списков объектов в процессе фоновой
+проверки.
+
+## scrub_find_best
+
+- Тип: булево (да/нет)
+- Значение по умолчанию: true
+- Можно менять на лету: да
+
+Находить и автоматически восстанавливать "лучшие версии" объектов с
+несовпадающими копиями/частями. При использовании репликации "лучшая"
+версия - версия, доступная в большем числе экземпляров, чем другие. При
+использовании кодов коррекции ошибок "лучшая" версия - это подмножество
+частей данных и чётности, полностью соответствующих друг другу.
+
+Гипотетическая ситуация, в которой вы можете захотеть отключить этот
+поиск - это если у вас 3 реплики и вы боитесь, что 2 диска из 3 могут
+незаметно и одинаково повредить данные одного и того же объекта, например,
+занулив его, и только 1 диск останется неповреждённым. В этой ситуации
+отключение этого параметра поможет вам восстановить данные! Смотрите также
+описание следующего параметра - scrub_ec_max_bruteforce.
+
+## scrub_ec_max_bruteforce
+
+- Тип: целое число
+- Значение по умолчанию: 100
+- Можно менять на лету: да
+
+Vitastor старается определить повреждённые части объектов при использовании
+EC (кодов коррекции ошибок) с более, чем 1 диском чётности, путём перебора
+всех возможных комбинаций ошибочных частей. Данное значение конфигурации
+ограничивает число перебираемых комбинаций. Вы можете попробовать поднять
+его, если используете схему кодирования EC N+K с N и K, достаточно большими
+для того, чтобы число сочетаний `C(N+K-1, K-1) = (N+K-1)! / (K-1)! / N!`
+было больше, чем стандартное значение 100.
+
+Если возможных комбинаций слишком много или если корректная комбинаций не
+определяется однозначно, объекты помечаются неконсистентными (inconsistent)
+и не восстанавливаются автоматически.
+
+При использовании репликации перебор не нужен, Vitastor просто предполагает,
+что вариант объекта с наибольшим количеством одинаковых копий корректен.
+Например, если вы используете 3 реплики и 1 из них отличается, эта 1 копия
+считается некорректной. Однако, если "лучшую" версию с числом доступных
+копий большим, чем у всех других версий, найти невозможно, то объект тоже
+маркируется неконсистентным.

docs/config/pool.en.md

@@ -40,6 +40,7 @@ Parameters:
 - [root_node](#root_node)
 - [osd_tags](#osd_tags)
 - [primary_affinity_tags](#primary_affinity_tags)
+- [scrub_interval](#scrub_interval)
 
 Examples:
 
@@ -272,6 +273,13 @@ Specifies OSD tags to prefer putting primary OSDs in this pool to.
 Note that for EC/XOR pools Vitastor always prefers to put primary OSD on one
 of the OSDs containing a data chunk for a PG.
 
+## scrub_interval
+
+- Type: time interval (number + unit s/m/h/d/M/y)
+
+Automatic scrubbing interval for this pool. Overrides
+[global scrub_interval setting](osd.en.md#scrub_interval).
+
 # Examples
 
 ## Replicated pool

docs/config/pool.ru.md

@@ -39,6 +39,7 @@
 - [root_node](#root_node)
 - [osd_tags](#osd_tags)
 - [primary_affinity_tags](#primary_affinity_tags)
+- [scrub_interval](#scrub_interval)
 
 Примеры:
 
@@ -276,6 +277,13 @@ PG в Vitastor эферемерны, то есть вы можете менят
 для PG этого пула. Имейте в виду, что для EC-пулов Vitastor также всегда
 предпочитает помещать первичный OSD на один из OSD с данными, а не с чётностью.
 
+## scrub_interval
+
+- Тип: временной интервал (число + единица измерения s/m/h/d/M/y)
+
+Интервал скраба, то есть, автоматической фоновой проверки данных для данного пула.
+Переопределяет [глобальную настройку scrub_interval](osd.ru.md#scrub_interval).
+
 # Примеры
 
 ## Реплицированный пул

docs/config/src/common.yml

@@ -11,13 +11,21 @@
 - name: etcd_address
   type: string or array of strings
   type_ru: строка или массив строк
+  online: true
   info: |
     etcd connection endpoint(s). Multiple endpoints may be delimited by "," or
     specified in a JSON array `["10.0.115.10:2379/v3","10.0.115.11:2379/v3"]`.
     Note that https is not supported for etcd connections yet.
+
+    etcd connection endpoints can be changed online by updating global
+    configuration in etcd itself - this allows to switch the cluster to new
+    etcd addresses without downtime.
   info_ru: |
     Адрес(а) подключения к etcd. Несколько адресов могут разделяться запятой
     или указываться в виде JSON-массива `["10.0.115.10:2379/v3","10.0.115.11:2379/v3"]`.
+
+    Адреса подключения к etcd можно поменять на лету, обновив конфигурацию в
+    самом etcd - это позволяет переключить кластер на новые etcd без остановки.
 - name: etcd_prefix
   type: string
   default: "/vitastor"
@@ -31,5 +39,6 @@
 - name: log_level
   type: int
   default: 0
+  online: true
   info: Log level. Raise if you want more verbose output.
   info_ru: Уровень логгирования. Повысьте, если хотите более подробный вывод.

docs/config/src/include.js

@@ -0,0 +1,145 @@
+#!/usr/bin/nodejs
+
+const fsp = require('fs').promises;
+
+run(process.argv).catch(console.error);
+
+async function run(argv)
+{
+    if (argv.length < 3)
+    {
+        console.log('Markdown preprocessor\nUSAGE: ./include.js file.md');
+        return;
+    }
+    const index_file = await fsp.realpath(argv[2]);
+    const re = /(\{\{[\s\S]*?\}\}|\[[^\]]+\]\([^\)]+\)|(?:^|\n)#[^\n]+)/;
+    let text = await fsp.readFile(index_file, { encoding: 'utf-8' });
+    text = text.split(re);
+    let included = {};
+    let heading = 0, heading_name = '', m;
+    for (let i = 0; i < text.length; i++)
+    {
+        if (text[i].substr(0, 2) == '{{')
+        {
+            // Inclusion
+            let incfile = text[i].substr(2, text[i].length-4);
+            let section = null;
+            let indent = heading;
+            incfile = incfile.replace(/\s*\|\s*indent\s*=\s*(-?\d+)\s*$/, (m, m1) => { indent = parseInt(m1); return ''; });
+            incfile = incfile.replace(/\s*#\s*([^#]+)$/, (m, m1) => { section = m1; return ''; });
+            let inc_heading = section;
+            incfile = rel2abs(index_file, incfile);
+            let inc = await fsp.readFile(incfile, { encoding: 'utf-8' });
+            inc = inc.trim().replace(/^[\s\S]+?\n#/, '#'); // remove until the first header
+            inc = inc.split(re);
+            const indent_str = new Array(indent+1).join('#');
+            let section_start = -1, section_end = -1;
+            for (let j = 0; j < inc.length; j++)
+            {
+                if ((m = /^(\n?)(#+\s*)([\s\S]+)$/.exec(inc[j])))
+                {
+                    if (!inc_heading)
+                    {
+                        inc_heading = m[3].trim();
+                    }
+                    if (section)
+                    {
+                        if (m[3].trim() == section)
+                            section_start = j;
+                        else if (section_start >= 0)
+                        {
+                            section_end = j;
+                            break;
+                        }
+                    }
+                    inc[j] = m[1] + indent_str + m[2] + m[3];
+                }
+                else if ((m = /^(\[[^\]]+\]\()([^\)]+)(\))$/.exec(inc[j])) && !/^https?:(\/\/)|^#/.exec(m[2]))
+                {
+                    const abs_m2 = rel2abs(incfile, m[2]);
+                    const rel_m = abs2rel(__filename, abs_m2);
+                    if (rel_m.substr(0, 9) == '../../../') // outside docs
+                        inc[j] = m[1] + 'https://git.yourcmc.ru/vitalif/vitastor/src/branch/master/'+rel2abs('docs/config/src/include.js', rel_m) + m[3];
+                    else
+                        inc[j] = m[1] + abs_m2 + m[3];
+                }
+            }
+            if (section)
+            {
+                inc = section_start >= 0 ? inc.slice(section_start, section_end < 0 ? inc.length : section_end) : [];
+            }
+            if (inc.length)
+            {
+                if (!inc_heading)
+                    inc_heading = heading_name||'';
+                included[incfile+(section ? '#'+section : '')] = '#'+inc_heading.toLowerCase().replace(/\P{L}+/ug, '-').replace(/^-|-$/g, '');
+                inc[0] = inc[0].replace(/^\s+/, '');
+                inc[inc.length-1] = inc[inc.length-1].replace(/\s+$/, '');
+            }
+            text.splice(i, 1, ...inc);
+            i = i + inc.length - 1;
+        }
+        else if ((m = /^\n?(#+)\s*([\s\S]+)$/.exec(text[i])))
+        {
+            // Heading
+            heading = m[1].length;
+            heading_name = m[2].trim();
+        }
+    }
+    for (let i = 0; i < text.length; i++)
+    {
+        if ((m = /^(\[[^\]]+\]\()([^\)]+)(\))$/.exec(text[i])) && !/^https?:(\/\/)|^#/.exec(m[2]))
+        {
+            const p = m[2].indexOf('#');
+            if (included[m[2]])
+            {
+                text[i] = m[1]+included[m[2]]+m[3];
+            }
+            else if (p >= 0 && included[m[2].substr(0, p)])
+            {
+                text[i] = m[1]+m[2].substr(p)+m[3];
+            }
+        }
+    }
+    console.log(text.join(''));
+}
+
+function rel2abs(ref, rel)
+{
+    rel = [ ...ref.replace(/^(.*)\/[^\/]+$/, '$1').split(/\/+/), ...rel.split(/\/+/) ];
+    return killdots(rel).join('/');
+}
+
+function abs2rel(ref, abs)
+{
+    ref = ref.split(/\/+/);
+    abs = abs.split(/\/+/);
+    while (ref.length > 1 && ref[0] == abs[0])
+    {
+        ref.shift();
+        abs.shift();
+    }
+    for (let i = 1; i < ref.length; i++)
+    {
+        abs.unshift('..');
+    }
+    return killdots(abs).join('/');
+}
+
+function killdots(rel)
+{
+    for (let i = 0; i < rel.length; i++)
+    {
+        if (rel[i] == '.')
+        {
+            rel.splice(i, 1);
+            i--;
+        }
+        else if (i >= 1 && rel[i] == '..' && rel[i-1] != '..')
+        {
+            rel.splice(i-1, 2);
+            i -= 2;
+        }
+    }
+    return rel;
+}

docs/config/src/included.en.md

@@ -0,0 +1,65 @@
+# Vitastor
+
+{{../../../README.md#The Idea}}
+
+{{../../../README.md#Talks and presentations}}
+
+{{../../intro/features.en.md}}
+
+{{../../intro/quickstart.en.md}}
+
+{{../../intro/architecture.en.md}}
+
+## Installation
+
+{{../../installation/packages.en.md}}
+
+{{../../installation/proxmox.en.md}}
+
+{{../../installation/openstack.en.md}}
+
+{{../../installation/kubernetes.en.md}}
+
+{{../../installation/source.en.md}}
+
+{{../../config.en.md|indent=1}}
+
+{{../../config/common.en.md|indent=2}}
+
+{{../../config/network.en.md|indent=2}}
+
+{{../../config/layout-cluster.en.md|indent=2}}
+
+{{../../config/layout-osd.en.md|indent=2}}
+
+{{../../config/osd.en.md|indent=2}}
+
+{{../../config/monitor.en.md|indent=2}}
+
+{{../../config/pool.en.md|indent=2}}
+
+{{../../config/inode.en.md|indent=2}}
+
+## Usage
+
+{{../../usage/cli.en.md}}
+
+{{../../usage/disk.en.md}}
+
+{{../../usage/fio.en.md}}
+
+{{../../usage/nbd.en.md}}
+
+{{../../usage/qemu.en.md}}
+
+{{../../usage/nfs.en.md}}
+
+## Performance
+
+{{../../performance/understanding.en.md}}
+
+{{../../performance/theoretical.en.md}}
+
+{{../../performance/comparison1.en.md}}
+
+{{../../intro/author.en.md|indent=1}}

docs/config/src/included.ru.md

@@ -0,0 +1,65 @@
+# Vitastor
+
+{{../../../README-ru.md#Идея|indent=0}}
+
+{{../../../README-ru.md#Презентации и записи докладов|indent=0}}
+
+{{../../intro/features.ru.md}}
+
+{{../../intro/quickstart.ru.md}}
+
+{{../../intro/architecture.ru.md}}
+
+## Установка
+
+{{../../installation/packages.ru.md}}
+
+{{../../installation/proxmox.ru.md}}
+
+{{../../installation/openstack.ru.md}}
+
+{{../../installation/kubernetes.ru.md}}
+
+{{../../installation/source.ru.md}}
+
+{{../../config.ru.md|indent=1}}
+
+{{../../config/common.ru.md|indent=2}}
+
+{{../../config/network.ru.md|indent=2}}
+
+{{../../config/layout-cluster.ru.md|indent=2}}
+
+{{../../config/layout-osd.ru.md|indent=2}}
+
+{{../../config/osd.ru.md|indent=2}}
+
+{{../../config/monitor.ru.md|indent=2}}
+
+{{../../config/pool.ru.md|indent=2}}
+
+{{../../config/inode.ru.md|indent=2}}
+
+## Использование
+
+{{../../usage/cli.ru.md}}
+
+{{../../usage/disk.ru.md}}
+
+{{../../usage/fio.ru.md}}
+
+{{../../usage/nbd.ru.md}}
+
+{{../../usage/qemu.ru.md}}
+
+{{../../usage/nfs.ru.md}}
+
+## Производительность
+
+{{../../performance/understanding.ru.md}}
+
+{{../../performance/theoretical.ru.md}}
+
+{{../../performance/comparison1.ru.md}}
+
+{{../../intro/author.ru.md|indent=1}}

docs/config/src/make.js

@@ -14,6 +14,7 @@ const L = {
         toc_config: '[Configuration](../config.en.md)',
         toc_usage: 'Usage',
         toc_performance: 'Performance',
+        online: 'Can be changed online: yes',
     },
     ru: {
         Documentation: 'Документация',
@@ -28,6 +29,7 @@ const L = {
         toc_config: '[Конфигурация](../config.ru.md)',
         toc_usage: 'Использование',
         toc_performance: 'Производительность',
+        online: 'Можно менять на лету: да',
     },
 };
 const types = {
@@ -70,6 +72,8 @@ for (const file of params_files)
                 out += `- ${L[lang]['Default'] || 'Default'}: ${c.default}\n`;
             if (c.min !== undefined)
                 out += `- ${L[lang]['Minimum'] || 'Minimum'}: ${c.min}\n`;
+            if (c.online)
+                out += `- ${L[lang]['online'] || 'Can be changed online: yes'}\n`;
             out += `\n`+(c["info_"+lang] || c["info"]).replace(/\s+$/, '');
         }
         const head = fs.readFileSync(__dirname+'/'+file+'.'+lang+'.md', { encoding: 'utf-8' });

docs/config/src/network.yml

@@ -164,18 +164,21 @@
   type: sec
   min: 1
   default: 5
+  online: true
   info: Interval before attempting to reconnect to an unavailable OSD.
   info_ru: Время ожидания перед повторной попыткой соединиться с недоступным OSD.
 - name: peer_connect_timeout
   type: sec
   min: 1
   default: 5
+  online: true
   info: Timeout for OSD connection attempts.
   info_ru: Максимальное время ожидания попытки соединения с OSD.
 - name: osd_idle_timeout
   type: sec
   min: 1
   default: 5
+  online: true
   info: |
     OSD connection inactivity time after which clients and other OSDs send
     keepalive requests to check state of the connection.
@@ -186,6 +189,7 @@
   type: sec
   min: 1
   default: 5
+  online: true
   info: |
     Maximum time to wait for OSD keepalive responses. If an OSD doesn't respond
     within this time, the connection to it is dropped and a reconnection attempt
@@ -198,6 +202,7 @@
   type: ms
   min: 50
   default: 500
+  online: true
   info: |
     OSDs respond to clients with a special error code when they receive I/O
     requests for a PG that's not synchronized and started. This parameter sets
@@ -211,6 +216,7 @@
 - name: max_etcd_attempts
   type: int
   default: 5
+  online: true
   info: |
     Maximum number of attempts for etcd requests which can't be retried
     indefinitely.
@@ -220,6 +226,7 @@
 - name: etcd_quick_timeout
   type: ms
   default: 1000
+  online: true
   info: |
     Timeout for etcd requests which should complete quickly, like lease refresh.
   info_ru: |
@@ -228,6 +235,7 @@
 - name: etcd_slow_timeout
   type: ms
   default: 5000
+  online: true
   info: Timeout for etcd requests which are allowed to wait for some time.
   info_ru: |
     Максимальное время выполнения запросов к etcd, для которых не обязательно
@@ -235,6 +243,7 @@
 - name: etcd_keepalive_timeout
   type: sec
   default: max(30, etcd_report_interval*2)
+  online: true
   info: |
     Timeout for etcd connection HTTP Keep-Alive. Should be higher than
     etcd_report_interval to guarantee that keepalive actually works.
@@ -244,6 +253,7 @@
 - name: etcd_ws_keepalive_timeout
   type: sec
   default: 30
+  online: true
   info: |
     etcd websocket ping interval required to keep the connection alive and
     detect disconnections quickly.
@@ -252,6 +262,7 @@
 - name: client_dirty_limit
   type: int
   default: 33554432
+  online: true
   info: |
     Without immediate_commit=all this parameter sets the limit of "dirty"
     (not committed by fsync) data allowed by the client before forcing an

docs/config/src/osd.en.md

@@ -1,4 +1,5 @@
 # Runtime OSD Parameters
 
 These parameters only apply to OSDs, are not fixed at the moment of OSD drive
-initialization and can be changed with an OSD restart.
+initialization and can be changed - either with an OSD restart or, for some of
+them, even without restarting by updating configuration in etcd.

docs/config/src/osd.ru.md

@@ -2,4 +2,5 @@
 
 Данные параметры используются только OSD, но, в отличие от дисковых параметров,
 не фиксируются в момент инициализации дисков OSD и могут быть изменены в любой
-момент с перезапуском OSD.
+момент с помощью перезапуска OSD, а некоторые и без перезапуска, с помощью
+изменения конфигурации в etcd.

docs/config/src/osd.yml

@@ -66,6 +66,7 @@
 - name: autosync_interval
   type: sec
   default: 5
+  online: true
   info: |
     Time interval at which automatic fsyncs/flushes are issued by each OSD when
     the immediate_commit mode if disabled. fsyncs are required because without
@@ -83,6 +84,7 @@
 - name: autosync_writes
   type: int
   default: 128
+  online: true
   info: |
     Same as autosync_interval, but sets the maximum number of uncommitted write
     operations before issuing an fsync operation internally.
@@ -93,6 +95,7 @@
 - name: recovery_queue_depth
   type: int
   default: 4
+  online: true
   info: |
     Maximum recovery operations per one primary OSD at any given moment of time.
     Currently it's the only parameter available to tune the speed or recovery
@@ -105,6 +108,7 @@
 - name: recovery_pg_switch
   type: int
   default: 128
+  online: true
   info: |
     Number of recovery operations before switching to recovery of the next PG.
     The idea is to mix all PGs during recovery for more even space and load
@@ -119,6 +123,7 @@
 - name: recovery_sync_batch
   type: int
   default: 16
+  online: true
   info: Maximum number of recovery operations before issuing an additional fsync.
   info_ru: Максимальное число операций восстановления перед дополнительным fsync.
 - name: readonly
@@ -133,6 +138,7 @@
 - name: no_recovery
   type: bool
   default: false
+  online: true
   info: |
     Disable automatic background recovery of objects. Note that it doesn't
     affect implicit recovery of objects happening during writes - a write is
@@ -145,6 +151,7 @@
 - name: no_rebalance
   type: bool
   default: false
+  online: true
   info: |
     Disable background movement of data between different OSDs. Disabling it
     means that PGs in the `has_misplaced` state will be left in it indefinitely.
@@ -155,6 +162,7 @@
 - name: print_stats_interval
   type: sec
   default: 3
+  online: true
   info: |
     Time interval at which OSDs print simple human-readable operation
     statistics on stdout.
@@ -164,6 +172,7 @@
 - name: slow_log_interval
   type: sec
   default: 10
+  online: true
   info: |
     Time interval at which OSDs dump slow or stuck operations on stdout, if
     they're any. Also it's the time after which an operation is considered
@@ -175,6 +184,7 @@
 - name: inode_vanish_time
   type: sec
   default: 60
+  online: true
   info: |
     Number of seconds after which a deleted inode is removed from OSD statistics.
   info_ru: |
@@ -182,6 +192,7 @@
 - name: max_write_iodepth
   type: int
   default: 128
+  online: true
   info: |
     Parallel client write operation limit per one OSD. Operations that exceed
     this limit are pushed to a temporary queue instead of being executed
@@ -193,6 +204,7 @@
 - name: min_flusher_count
   type: int
   default: 1
+  online: true
   info: |
     Flusher is a micro-thread that moves data from the journal to the data
     area of the device. Their number is auto-tuned between minimum and maximum.
@@ -204,6 +216,7 @@
 - name: max_flusher_count
   type: int
   default: 256
+  online: true
   info: |
     Maximum number of journal flushers (see above min_flusher_count).
   info_ru: |
@@ -284,6 +297,7 @@
 - name: throttle_small_writes
   type: bool
   default: false
+  online: true
   info: |
     Enable soft throttling of small journaled writes. Useful for hybrid OSDs
     with fast journal/metadata devices and slow data devices. The idea is that
@@ -312,6 +326,7 @@
 - name: throttle_target_iops
   type: int
   default: 100
+  online: true
   info: |
     Target maximum number of throttled operations per second under the condition
     of full journal. Set it to approximate random write iops of your data devices
@@ -324,6 +339,7 @@
 - name: throttle_target_mbs
   type: int
   default: 100
+  online: true
   info: |
     Target maximum bandwidth in MB/s of throttled operations per second under
     the condition of full journal. Set it to approximate linear write
@@ -336,6 +352,7 @@
 - name: throttle_target_parallelism
   type: int
   default: 1
+  online: true
   info: |
     Target maximum parallelism of throttled operations under the condition of
     full journal. Set it to approximate internal parallelism of your data
@@ -348,6 +365,7 @@
 - name: throttle_threshold_us
   type: us
   default: 50
+  online: true
   info: |
     Minimal computed delay to be applied to throttled operations. Usually
     doesn't need to be changed.
@@ -357,10 +375,151 @@
 - name: osd_memlock
   type: bool
   default: false
-  info: >
+  info: |
     Lock all OSD memory to prevent it from being unloaded into swap with
     mlockall(). Requires sufficient ulimit -l (max locked memory).
-  info_ru: >
+  info_ru: |
     Блокировать всю память OSD с помощью mlockall, чтобы запретить её выгрузку
     в пространство подкачки. Требует достаточного значения ulimit -l (лимита
     заблокированной памяти).
+- name: auto_scrub
+  type: bool
+  default: false
+  online: true
+  info: |
+    Data scrubbing is the process of background verification of copies to find
+    and repair corrupted blocks. It's not run automatically by default since
+    it's a new feature. Set this parameter to true to enable automatic scrubs.
+
+    This parameter makes OSDs automatically schedule data scrubbing of clean PGs
+    every `scrub_interval` (see below). You can also start/schedule scrubbing
+    manually by setting `next_scrub` JSON key to the desired UNIX time of the
+    next scrub in `/pg/history/...` values in etcd.
+  info_ru: |
+    Скраб - процесс фоновой проверки копий данных, предназначенный, чтобы
+    находить и исправлять повреждённые блоки. По умолчанию эти проверки ещё не
+    запускаются автоматически, так как являются новой функцией. Чтобы включить
+    автоматическое планирование скрабов, установите данный параметр в true.
+
+    Включённый параметр заставляет OSD автоматически планировать фоновую
+    проверку чистых PG раз в `scrub_interval` (см. ниже). Вы также можете
+    запустить или запланировать проверку вручную, установив значение ключа JSON
+    `next_scrub` внутри ключей etcd `/pg/history/...` в UNIX-время следующей
+    желаемой проверки.
+- name: no_scrub
+  type: bool
+  default: false
+  online: true
+  info: |
+    Temporarily disable scrubbing and stop running scrubs.
+  info_ru: |
+    Временно отключить и остановить запущенные скрабы.
+- name: scrub_interval
+  type: string
+  default: 30d
+  online: true
+  info: |
+    Default automatic scrubbing interval for all pools. Numbers without suffix
+    are treated as seconds, possible unit suffixes include 's' (seconds),
+    'm' (minutes), 'h' (hours), 'd' (days), 'M' (months) and 'y' (years).
+  info_ru: |
+    Интервал автоматической фоновой проверки по умолчанию для всех пулов.
+    Значения без указанной единицы измерения считаются в секундах, допустимые
+    символы единиц измерения в конце: 's' (секунды),
+    'm' (минуты), 'h' (часы), 'd' (дни), 'M' (месяца) или 'y' (годы).
+- name: scrub_queue_depth
+  type: int
+  default: 1
+  online: true
+  info: |
+    Number of parallel scrubbing operations per one OSD.
+  info_ru: |
+    Число параллельных операций фоновой проверки на один OSD.
+- name: scrub_sleep
+  type: ms
+  default: 0
+  online: true
+  info: |
+    Additional interval between two consecutive scrubbing operations on one OSD.
+    Can be used to slow down scrubbing if it affects user load too much.
+  info_ru: |
+    Дополнительный интервал ожидания после фоновой проверки каждого объекта на
+    одном OSD. Может использоваться для замедления скраба, если он слишком
+    сильно влияет на пользовательскую нагрузку.
+- name: scrub_list_limit
+  type: int
+  default: 1000
+  online: true
+  info: |
+    Number of objects to list in one listing operation during scrub.
+  info_ru: |
+    Размер загружаемых за одну операцию списков объектов в процессе фоновой
+    проверки.
+- name: scrub_find_best
+  type: bool
+  default: true
+  online: true
+  info: |
+    Find and automatically restore best versions of objects with unmatched
+    copies. In replicated setups, the best version is the version with most
+    matching replicas. In EC setups, the best version is the subset of data
+    and parity chunks without mismatches.
+
+    The hypothetical situation where you might want to disable it is when
+    you have 3 replicas and you are paranoid that 2 HDDs out of 3 may silently
+    corrupt an object in the same way (for example, zero it out) and only
+    1 HDD will remain good. In this case disabling scrub_find_best may help
+    you to recover the data! See also scrub_ec_max_bruteforce below.
+  info_ru: |
+    Находить и автоматически восстанавливать "лучшие версии" объектов с
+    несовпадающими копиями/частями. При использовании репликации "лучшая"
+    версия - версия, доступная в большем числе экземпляров, чем другие. При
+    использовании кодов коррекции ошибок "лучшая" версия - это подмножество
+    частей данных и чётности, полностью соответствующих друг другу.
+
+    Гипотетическая ситуация, в которой вы можете захотеть отключить этот
+    поиск - это если у вас 3 реплики и вы боитесь, что 2 диска из 3 могут
+    незаметно и одинаково повредить данные одного и того же объекта, например,
+    занулив его, и только 1 диск останется неповреждённым. В этой ситуации
+    отключение этого параметра поможет вам восстановить данные! Смотрите также
+    описание следующего параметра - scrub_ec_max_bruteforce.
+- name: scrub_ec_max_bruteforce
+  type: int
+  default: 100
+  online: true
+  info: |
+    Vitastor can locate corrupted chunks in EC setups with more than 1 parity
+    chunk by brute-forcing all possible error locations. This configuration
+    value limits the maximum number of checked combinations. You can try to
+    increase it if you have EC N+K setup with N and K large enough for
+    combination count `C(N+K-1, K-1) = (N+K-1)! / (K-1)! / N!` to be greater
+    than the default 100.
+
+    If there are too many possible combinations or if multiple combinations give
+    correct results then objects are marked inconsistent and aren't recovered
+    automatically.
+
+    In replicated setups bruteforcing isn't needed, Vitastor just assumes that
+    the variant with most available equal copies is correct. For example, if
+    you have 3 replicas and 1 of them differs, this one is considered to be
+    corrupted. But if there is no "best" version with more copies than all
+    others have then the object is also marked as inconsistent.
+  info_ru: |
+    Vitastor старается определить повреждённые части объектов при использовании
+    EC (кодов коррекции ошибок) с более, чем 1 диском чётности, путём перебора
+    всех возможных комбинаций ошибочных частей. Данное значение конфигурации
+    ограничивает число перебираемых комбинаций. Вы можете попробовать поднять
+    его, если используете схему кодирования EC N+K с N и K, достаточно большими
+    для того, чтобы число сочетаний `C(N+K-1, K-1) = (N+K-1)! / (K-1)! / N!`
+    было больше, чем стандартное значение 100.
+
+    Если возможных комбинаций слишком много или если корректная комбинаций не
+    определяется однозначно, объекты помечаются неконсистентными (inconsistent)
+    и не восстанавливаются автоматически.
+
+    При использовании репликации перебор не нужен, Vitastor просто предполагает,
+    что вариант объекта с наибольшим количеством одинаковых копий корректен.
+    Например, если вы используете 3 реплики и 1 из них отличается, эта 1 копия
+    считается некорректной. Однако, если "лучшую" версию с числом доступных
+    копий большим, чем у всех других версий, найти невозможно, то объект тоже
+    маркируется неконсистентным.

docs/installation/kubernetes.ru.md

@@ -8,13 +8,13 @@
 
 У Vitastor есть CSI-плагин для Kubernetes, поддерживающий RWO, а также блочные RWX, тома.
 
-Для установки возьмите манифесты из директории [csi/deploy/](../csi/deploy/), поместите
-вашу конфигурацию подключения к Vitastor в [csi/deploy/001-csi-config-map.yaml](../csi/deploy/001-csi-config-map.yaml),
-настройте StorageClass в [csi/deploy/009-storage-class.yaml](../csi/deploy/009-storage-class.yaml)
+Для установки возьмите манифесты из директории [csi/deploy/](../../csi/deploy/), поместите
+вашу конфигурацию подключения к Vitastor в [csi/deploy/001-csi-config-map.yaml](../../csi/deploy/001-csi-config-map.yaml),
+настройте StorageClass в [csi/deploy/009-storage-class.yaml](../../csi/deploy/009-storage-class.yaml)
 и примените все `NNN-*.yaml` к вашей инсталляции Kubernetes.
 
 ```
 for i in ./???-*.yaml; do kubectl apply -f $i; done
 ```
 
-После этого вы сможете создавать PersistentVolume. Пример смотрите в файле [csi/deploy/example-pvc.yaml](../csi/deploy/example-pvc.yaml).
+После этого вы сможете создавать PersistentVolume. Пример смотрите в файле [csi/deploy/example-pvc.yaml](../../csi/deploy/example-pvc.yaml).

docs/installation/openstack.en.md

@@ -36,5 +36,5 @@ vitastor_pool_id = 1
 image_upload_use_cinder_backend = True
 ```
 
-To put Glance images in Vitastor, use [https://docs.openstack.org/cinder/pike/admin/blockstorage-volume-backed-image.html](volume-backed images),
+To put Glance images in Vitastor, use [volume-backed images](https://docs.openstack.org/cinder/pike/admin/blockstorage-volume-backed-image.html),
 although the support has not been verified yet.

docs/installation/openstack.ru.md

@@ -36,5 +36,5 @@ image_upload_use_cinder_backend = True
 ```
 
 Чтобы помещать в Vitastor Glance-образы, нужно использовать
-[https://docs.openstack.org/cinder/pike/admin/blockstorage-volume-backed-image.html](образы на основе томов Cinder),
+[образы на основе томов Cinder](https://docs.openstack.org/cinder/pike/admin/blockstorage-volume-backed-image.html),
 однако, поддержка этой функции ещё не проверялась.

docs/installation/packages.en.md

@@ -11,7 +11,8 @@
 - Trust Vitastor package signing key:
   `wget https://vitastor.io/debian/pubkey.gpg -O /etc/apt/trusted.gpg.d/vitastor.gpg`
 - Add Vitastor package repository to your /etc/apt/sources.list:
-  - Debian 11 (Bullseye/Sid): `deb https://vitastor.io/debian bullseye main`
+  - Debian 12 (Bookworm/Sid): `deb https://vitastor.io/debian bookworm main`
+  - Debian 11 (Bullseye): `deb https://vitastor.io/debian bullseye main`
   - Debian 10 (Buster): `deb https://vitastor.io/debian buster main`
 - For Debian 10 (Buster) also enable backports repository:
   `deb http://deb.debian.org/debian buster-backports main`
@@ -31,8 +32,8 @@
 - Enable elrepo-kernel:
   - CentOS 7: `yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm`
   - CentOS 8: `dnf install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm`
-  - RHEL 9 clones: optional, not required: `dnf install https://www.elrepo.org/elrepo-release-9.el9.elrepo.noarch.rpm`
-- Install packages: `yum/dnf install vitastor lpsolve etcd qemu-kvm` and optionally `kernel-ml` if you use elrepo-kernel
+  - RHEL 9 clones: `dnf install https://www.elrepo.org/elrepo-release-9.el9.elrepo.noarch.rpm`
+- Install packages: `yum/dnf install vitastor lpsolve etcd kernel-ml qemu-kvm`
 
 ## Installation requirements
 
@@ -45,3 +46,10 @@
 - etcd 3.4.15 or newer. Earlier versions won't work because of various bugs,
   for example [#12402](https://github.com/etcd-io/etcd/pull/12402).
 - node.js 10 or newer
+
+## Version archive
+
+All previous Vitastor and other components (QEMU, etcd...) package builds
+can be found here:
+
+https://vitastor.io/archive/

docs/installation/packages.ru.md

@@ -11,7 +11,8 @@
 - Добавьте ключ репозитория Vitastor:
   `wget https://vitastor.io/debian/pubkey.gpg -O /etc/apt/trusted.gpg.d/vitastor.gpg`
 - Добавьте репозиторий Vitastor в /etc/apt/sources.list:
-  - Debian 11 (Bullseye/Sid): `deb https://vitastor.io/debian bullseye main`
+  - Debian 12 (Bookworm/Sid): `deb https://vitastor.io/debian bookworm main`
+  - Debian 11 (Bullseye): `deb https://vitastor.io/debian bullseye main`
   - Debian 10 (Buster): `deb https://vitastor.io/debian buster main`
 - Для Debian 10 (Buster) также включите репозиторий backports:
   `deb http://deb.debian.org/debian buster-backports main`
@@ -22,13 +23,16 @@
 - Добавьте в систему репозиторий Vitastor:
   - CentOS 7: `yum install https://vitastor.io/rpms/centos/7/vitastor-release.rpm`
   - CentOS 8: `dnf install https://vitastor.io/rpms/centos/8/vitastor-release.rpm`
+  - AlmaLinux 9 и другие клоны RHEL 9 (Rocky, Oracle...): `dnf install https://vitastor.io/rpms/centos/9/vitastor-release.rpm`
 - Включите EPEL: `yum/dnf install epel-release`
 - Включите дополнительные репозитории CentOS:
   - CentOS 7: `yum install centos-release-scl`
   - CentOS 8: `dnf install centos-release-advanced-virtualization`
+  - Клоны RHEL 9: не нужно
 - Включите elrepo-kernel:
   - CentOS 7: `yum install https://www.elrepo.org/elrepo-release-7.el7.elrepo.noarch.rpm`
   - CentOS 8: `dnf install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm`
+  - Клоны RHEL 9: `dnf install https://www.elrepo.org/elrepo-release-9.el9.elrepo.noarch.rpm`
 - Установите пакеты: `yum/dnf install vitastor lpsolve etcd kernel-ml qemu-kvm`
 
 ## Установочные требования
@@ -41,3 +45,10 @@
 - etcd 3.4.15 или новее. Более старые версии не будут работать из-за разных багов,
   например, [#12402](https://github.com/etcd-io/etcd/pull/12402).
 - node.js 10 или новее
+
+## Архив предыдущих версий
+
+Все предыдущие сборки пакетов Vitastor и других компонентов, таких, как QEMU
+и etcd, можно скачать по следующей ссылке:
+
+https://vitastor.io/archive/

docs/installation/proxmox.en.md

@@ -6,10 +6,10 @@
 
 # Proxmox VE
 
-To enable Vitastor support in Proxmox Virtual Environment (6.4-7.4 are supported):
+To enable Vitastor support in Proxmox Virtual Environment (6.4-8.0 are supported):
 
 - Add the corresponding Vitastor Debian repository into sources.list on Proxmox hosts:
-  buster for 6.4, bullseye for 7.4, pve7.1 for 7.1, pve7.2 for 7.2, pve7.3 for 7.3
+  bookworm for 8.0, bullseye for 7.4, pve7.3 for 7.3, pve7.2 for 7.2, pve7.1 for 7.1, buster for 6.4
 - Install vitastor-client, pve-qemu-kvm, pve-storage-vitastor (* or see note) packages from Vitastor repository
 - Define storage in `/etc/pve/storage.cfg` (see below)
 - Block network access from VMs to Vitastor network (to OSDs and etcd),
@@ -35,5 +35,5 @@ vitastor: vitastor
     vitastor_nbd 0
 ```
 
-\* Note: you can also manually copy [patches/VitastorPlugin.pm](patches/VitastorPlugin.pm) to Proxmox hosts
+\* Note: you can also manually copy [patches/VitastorPlugin.pm](../../patches/VitastorPlugin.pm) to Proxmox hosts
 as `/usr/share/perl5/PVE/Storage/Custom/VitastorPlugin.pm` instead of installing pve-storage-vitastor.

docs/installation/proxmox.ru.md

@@ -4,12 +4,12 @@
 
 [Read in English](proxmox.en.md)
 
-# Proxmox
+# Proxmox VE
 
-Чтобы подключить Vitastor к Proxmox Virtual Environment (поддерживаются версии 6.4-7.4):
+Чтобы подключить Vitastor к Proxmox Virtual Environment (поддерживаются версии 6.4-8.0):
 
 - Добавьте соответствующий Debian-репозиторий Vitastor в sources.list на хостах Proxmox:
-  buster для 6.4, bullseye для 7.4, pve7.1 для 7.1, pve7.2 для 7.2, pve7.3 для 7.3
+  bookworm для 8.0, bullseye для 7.4, pve7.3 для 7.3, pve7.2 для 7.2, pve7.1 для 7.1, buster для 6.4
 - Установите пакеты vitastor-client, pve-qemu-kvm, pve-storage-vitastor (* или см. сноску) из репозитория Vitastor
 - Определите тип хранилища в `/etc/pve/storage.cfg` (см. ниже)
 - Обязательно заблокируйте доступ от виртуальных машин к сети Vitastor (OSD и etcd), т.к. Vitastor (пока) не поддерживает аутентификацию
@@ -35,5 +35,5 @@ vitastor: vitastor
 ```
 
 \* Примечание: вместо установки пакета pve-storage-vitastor вы можете вручную скопировать файл
-[patches/VitastorPlugin.pm](patches/VitastorPlugin.pm) на хосты Proxmox как
+[patches/VitastorPlugin.pm](../../patches/VitastorPlugin.pm) на хосты Proxmox как
 `/usr/share/perl5/PVE/Storage/Custom/VitastorPlugin.pm`.

docs/intro/architecture.en.md

@@ -44,7 +44,7 @@
   depends linearly on drive capacity and data store block size which is 128 KB by default.
   With 128 KB blocks metadata takes around 512 MB per 1 TB (which is still less than Ceph wants).
   Journal is also kept in memory by default, but in SSD-only clusters it's only 32 MB, and in SSD+HDD
-  clusters, where it's beneficial to increase it, [inmemory_journal](docs/config/osd.en.md#inmemory_journal) can be disabled.
+  clusters, where it's beneficial to increase it, [inmemory_journal](../config/osd.en.md#inmemory_journal) can be disabled.
 - Vitastor storage layer doesn't have internal copy-on-write or redirect-write. I know that maybe
   it's possible to create a good copy-on-write storage, but it's much harder and makes performance
   less deterministic, so CoW isn't used in Vitastor.

docs/intro/architecture.ru.md

@@ -156,7 +156,7 @@
   блока хранилища (block_size, по умолчанию 128 КБ). С 128 КБ блоком потребление памяти
   составляет примерно 512 МБ на 1 ТБ данных. Журналы по умолчанию тоже хранятся в памяти,
   но в SSD-кластерах нужный размер журнала составляет всего 32 МБ, а в гибридных (SSD+HDD)
-  кластерах, в которых есть смысл делать журналы больше, можно отключить [inmemory_journal](../docs/config/osd.ru.md#inmemory_journal).
+  кластерах, в которых есть смысл делать журналы больше, можно отключить [inmemory_journal](../config/osd.ru.md#inmemory_journal).
 - В Vitastor нет внутреннего copy-on-write. Я считаю, что реализация CoW-хранилища гораздо сложнее,
   поэтому сложнее добиться устойчиво хороших результатов. Возможно, в один прекрасный день
   я придумаю красивый алгоритм для CoW-хранилища, но пока нет — внутреннего CoW в Vitastor не будет.

docs/intro/features.en.md

@@ -29,12 +29,13 @@
 - Snapshots and copy-on-write image clones
 - [Write throttling to smooth random write workloads in SSD+HDD configurations](../config/osd.en.md#throttle_small_writes)
 - [RDMA/RoCEv2 support via libibverbs](../config/network.en.md#rdma_device)
+- [Scrubbing without checksums](../config/osd.en.md#auto_scrub) (verification of copies)
 
 ## Plugins and tools
 
 - [Debian and CentOS packages](../installation/packages.en.md)
 - [Image management CLI (vitastor-cli)](../usage/cli.en.md)
-- [Disk management CLI (vitastor-disk)](docs/usage/disk.en.md)
+- [Disk management CLI (vitastor-disk)](../usage/disk.en.md)
 - Generic user-space client library
 - [Native QEMU driver](../usage/qemu.en.md)
 - [Loadable fio engine for benchmarks](../usage/fio.en.md)
@@ -54,7 +55,6 @@ The following features are planned for the future:
 - iSCSI proxy
 - Multi-threaded client
 - Faster failover
-- Scrubbing without checksums (verification of replicas)
 - Checksums
 - Tiered storage (SSD caching)
 - NVDIMM support

docs/intro/features.ru.md

@@ -13,7 +13,7 @@
 ## Серверные функции
 
 - Базовая часть - надёжное кластерное блочное хранилище без единой точки отказа
-- [Производительность](../comparison1.ru.md) ;-D
+- [Производительность](../performance/comparison1.ru.md) ;-D
 - [Несколько схем отказоустойчивости](../config/pool.ru.md#scheme): репликация, XOR n+1 (1 диск чётности), коды коррекции ошибок
   Рида-Соломона на основе библиотек jerasure и ISA-L с любым числом дисков данных и чётности в группе
 - Конфигурация через простые человекочитаемые JSON-структуры в etcd
@@ -31,12 +31,13 @@
 - Снапшоты и copy-on-write клоны
 - [Сглаживание производительности случайной записи в SSD+HDD конфигурациях](../config/osd.ru.md#throttle_small_writes)
 - [Поддержка RDMA/RoCEv2 через libibverbs](../config/network.ru.md#rdma_device)
+- [Фоновая проверка целостности без контрольных сумм](../config/osd.ru.md#auto_scrub) (сверка копий)
 
 ## Драйверы и инструменты
 
 - [Пакеты для Debian и CentOS](../installation/packages.ru.md)
 - [Консольный интерфейс управления образами (vitastor-cli)](../usage/cli.ru.md)
-- [Инструмент управления дисками (vitastor-disk)](docs/usage/disk.ru.md)
+- [Инструмент управления дисками (vitastor-disk)](../usage/disk.ru.md)
 - Общая пользовательская клиентская библиотека для работы с кластером
 - [Драйвер диска для QEMU](../usage/qemu.ru.md)
 - [Драйвер диска для утилиты тестирования производительности fio](../usage/fio.ru.md)
@@ -54,7 +55,6 @@
 - iSCSI-прокси
 - Многопоточный клиент
 - Более быстрое переключение при отказах
-- Фоновая проверка целостности без контрольных сумм (сверка реплик)
 - Контрольные суммы
 - Поддержка SSD-кэширования (tiered storage)
 - Поддержка NVDIMM

docs/usage/cli.en.md

@@ -20,6 +20,8 @@ It supports the following commands:
 - [flatten](#flatten)
 - [rm-data](#rm-data)
 - [merge-data](#merge-data)
+- [describe](#describe)
+- [fix](#fix)
 - [alloc-osd](#alloc-osd)
 - [rm-osd](#rm-osd)
 
@@ -174,6 +176,51 @@ Merge layer data without changing metadata. Merge `<from>`..`<to>` to `<target>`
 `<to>` must be a child of `<from>` and `<target>` may be one of the layers between
 `<from>` and `<to>`, including `<from>` and `<to>`.
 
+## describe
+
+`vitastor-cli describe [--osds <osds>] [--object-state <states>] [--pool <pool>]
+    [--inode <ino>] [--min-inode <ino>] [--max-inode <ino>]
+    [--min-offset <offset>] [--max-offset <offset>]`
+
+Describe unclean object locations in the cluster.
+
+```
+--osds <osds>
+    Only list objects from primary OSD(s) <osds>.
+--object-state <states>
+    Only list objects in given state(s). State(s) may include:
+    degraded, misplaced, incomplete, corrupted, inconsistent.
+--pool <pool name or number>
+    Only list objects in the given pool.
+--inode, --min-inode, --max-inode
+    Restrict listing to specific inode numbers.
+--min-offset, --max-offset
+    Restrict listing to specific offsets inside inodes.
+```
+
+## fix
+
+`vitastor-cli fix [--objects <objects>] [--bad-osds <osds>] [--part <part>] [--check no]`
+
+Fix inconsistent objects in the cluster by deleting some copies.
+
+```
+--objects <objects>
+    Objects to fix, either in plain text or JSON format. If not specified,
+    object list will be read from STDIN in one of the same formats.
+    Plain text format: 0x<inode>:0x<stripe> <any delimiter> 0x<inode>:0x<stripe> ...
+    JSON format: [{"inode":"0x...","stripe":"0x..."},...]
+--bad-osds <osds>
+    Remove inconsistent copies/parts of objects from these OSDs, effectively
+    marking them bad and allowing Vitastor to recover objects from other copies.
+--part <number>
+    Only remove EC part <number> (from 0 to pg_size-1), required for extreme
+    edge cases where one OSD has multiple parts of a EC object.
+--check no
+    Do not recheck that requested objects are actually inconsistent,
+    delete requested copies/parts anyway.
+```
+
 ## alloc-osd
 
 `vitastor-cli alloc-osd`

docs/usage/cli.ru.md

@@ -184,6 +184,59 @@ vitastor-cli snap-create [-p|--pool <id|name>] <image>@<snapshot>
 в целевой образ `<target>`. `<to>` должен быть дочерним образом `<from>`, а `<target>`
 должен быть одним из слоёв между `<from>` и `<to>`, включая сами `<from>` и `<to>`.
 
+## describe
+
+`vitastor-cli describe [--osds <osds>] [--object-state <состояния>] [--pool <пул>]
+    [--inode <номер>] [--min-inode <номер>] [--max-inode <номер>]
+    [--min-offset <смещение>] [--max-offset <смещение>]`
+
+Описать состояние "грязных" объектов в кластере, то есть таких объектов, копии
+или части которых хранятся на наборе OSD, не равном целевому.
+
+```
+--osds <osds>
+    Перечислять только объекты с первичных OSD из списка <osds>.
+--object-state <состояния>
+    Перечислять только объекты в указанных состояниях. Возможные состояния
+    объектов:
+    - degraded - деградированная избыточность
+    - misplaced - перемещённый
+    - incomplete - нечитаемый из-за потери большего числа частей, чем допустимо
+    - corrupted - с одной или более повреждённой частью
+    - inconsistent - неконсистентный, с неоднозначным расхождением копий/частей
+--pool <имя или ID пула>
+    Перечислять только объекты из заданного пула.
+--inode, --min-inode, --max-inode
+    Перечислять только объекты из указанных номеров инодов (образов).
+--min-offset, --max-offset
+    Перечислять только объекты с заданных смещений внутри образов.
+```
+
+## fix
+
+`vitastor-cli fix [--objects <объекты>] [--bad-osds <osds>] [--part <номер>] [--check no]`
+
+Исправить неконсистентные (неоднозначные) объекты путём удаления части копий.
+
+```
+--objects <объекты>
+    Объекты для исправления - в простом текстовом или JSON формате. Если опция
+    не указана, список объектов читается со стандартного ввода в тех же форматах.
+    Простой формат: 0x<инод>:0x<смещение> <любой разделитель> 0x<инод>:0x<смещение> ...
+    Формат JSON: [{"inode":"0x<инод>","stripe":"0x<смещение>"},...]
+--bad-osds <osds>
+    Удалить неконсистентные копии/части объектов с данных OSD, таким образом
+    признавая потерю этих копий и позволяя Vitastor-у восстановить объекты из
+    других копий.
+--part <номер>
+    Удалить только части EC с заданным номером (от 0 до pg_size-1). Нужно только
+    в редких граничных случаях, когда один и тот же OSD содержит несколько частей
+    одного EC-объекта.
+--check no
+    Не перепроверять, что заданные объекты действительно в неконсистентном
+    состоянии и просто удалять заданные части.
+```
+
 ## alloc-osd
 
 `vitastor-cli alloc-osd`

docs/usage/nbd.en.md

@@ -25,6 +25,23 @@ It will output a block device name like /dev/nbd0 which you can then use as a no
 
 You can also use `--pool <POOL> --inode <INODE> --size <SIZE>` instead of `--image <IMAGE>` if you want.
 
+Additional options for map command:
+
+* `--nbd_timeout 30` \
+  Timeout for I/O operations in seconds after exceeding which the kernel stops
+  the device. You can set it to 0 to disable the timeout, but beware that you
+  won't be able to stop the device at all if vitastor-nbd process dies.
+* `--nbd_max_devices 64 --nbd_max_part 3` \
+  Options for the `nbd` kernel module when modprobing it (`nbds_max` and `max_part`).
+  note that maximum allowed (nbds_max)*(1+max_part) is 256.
+* `--logfile /path/to/log/file.txt` \
+  Write log messages to the specified file instead of dropping them (in background mode)
+  or printing them to the standard output (in foreground mode).
+* `--dev_num N` \
+  Use the specified device /dev/nbdN instead of automatic selection.
+* `--foreground 1` \
+  Stay in foreground, do not daemonize.
+
 ## Unmap image
 
 To unmap the device run:
@@ -32,3 +49,27 @@ To unmap the device run:
 ```
 vitastor-nbd unmap /dev/nbd0
 ```
+
+## List mapped images
+
+```
+vitastor-nbd ls [--json]
+```
+
+Example output (normal format):
+
+```
+/dev/nbd0
+image: bench
+pid: 584536
+
+/dev/nbd1
+image: bench1
+pid: 584546
+```
+
+Example output (JSON format):
+
+```
+{"/dev/nbd0": {"image": "bench", "pid": 584536}, "/dev/nbd1": {"image": "bench1", "pid": 584546}}
+```

docs/usage/nbd.ru.md

@@ -30,6 +30,27 @@ vitastor-nbd map --etcd_address 10.115.0.10:2379/v3 --image testimg
 Для обращения по номеру инода, аналогично другим командам, можно использовать опции
 `--pool <POOL> --inode <INODE> --size <SIZE>` вместо `--image testimg`.
 
+Дополнительные опции для команды подключения NBD-устройства:
+
+* `--nbd_timeout 30` \
+  Максимальное время выполнения любой операции чтения/записи в секундах, при
+  превышении которого ядро остановит NBD-устройство. Вы можете установить опцию
+  в 0, чтобы отключить ограничение времени, но имейте в виду, что в этом случае
+  вы вообще не сможете отключить NBD-устройство при нештатном завершении процесса
+  vitastor-nbd.
+* `--nbd_max_devices 64 --nbd_max_part 3` \
+  Опции, передаваемые модулю ядра nbd, если его загружает vitastor-nbd
+  (`nbds_max` и `max_part`). Имейте в виду, что (nbds_max)*(1+max_part)
+  обычно не должно превышать 256.
+* `--logfile /path/to/log/file.txt` \
+  Писать сообщения о процессе работы в заданный файл, вместо пропуска их
+  при фоновом режиме запуска или печати на стандартный вывод при запуске
+  в консоли с `--foreground 1`.
+* `--dev_num N` \
+  Использовать заданное устройство `/dev/nbdN` вместо автоматического подбора.
+* `--foreground 1` \
+  Не уводить процесс в фоновый режим.
+
 ## Отключить устройство
 
 Для отключения устройства выполните:
@@ -37,3 +58,27 @@ vitastor-nbd map --etcd_address 10.115.0.10:2379/v3 --image testimg
 ```
 vitastor-nbd unmap /dev/nbd0
 ```
+
+## Вывести подключённые устройства
+
+```
+vitastor-nbd ls [--json]
+```
+
+Пример вывода в обычном формате:
+
+```
+/dev/nbd0
+image: bench
+pid: 584536
+
+/dev/nbd1
+image: bench1
+pid: 584546
+```
+
+Пример вывода в JSON-формате:
+
+```
+{"/dev/nbd0": {"image": "bench", "pid": 584536}, "/dev/nbd1": {"image": "bench1", "pid": 584546}}
+```

docs/usage/nfs.ru.md

@@ -29,7 +29,7 @@ vitastor-nfs [--etcd_address ADDR] [ДРУГИЕ ОПЦИИ]
 --bind <IP>       принимать соединения по адресу <IP> (по умолчанию 0.0.0.0 - на всех)
 --nfspath <PATH>  установить путь NFS-экспорта в <PATH> (по умолчанию /)
 --port <PORT>     использовать порт <PORT> для NFS-сервисов (по умолчанию 2049)
---pool <POOL>     исползовать пул <POOL> для новых образов (обязательно, если пул в кластере не один)
+--pool <POOL>     использовать пул <POOL> для новых образов (обязательно, если пул в кластере не один)
 --foreground 1    не уходить в фон после запуска
 ```
 

mon/PGUtil.js

@@ -10,25 +10,18 @@ function add_pg_history(new_pg_history, new_pg, prev_pgs, prev_pg_history, old_p
     if (!new_pg_history[new_pg])
     {
         new_pg_history[new_pg] = {
-            osd_set_epochs: {},
+            osd_sets: {},
             all_peers: {},
             epoch: 0,
         };
     }
     const nh = new_pg_history[new_pg], oh = prev_pg_history[old_pg];
-    nh.osd_set_epochs[prev_pgs[old_pg].join(' ')] = { osd_set: prev_pgs[old_pg] };
+    nh.osd_sets[prev_pgs[old_pg].join(' ')] = prev_pgs[old_pg];
     if (oh && oh.osd_sets && oh.osd_sets.length)
     {
         for (const pg of oh.osd_sets)
         {
-            nh.osd_set_epochs[pg.join(' ')] = { osd_set: pg.map(osd_num => Number(osd_num)) };
-        }
-    }
-    if (oh && oh.osd_set_epochs && oh.osd_set_epochs.length)
-    {
-        for (const pg of oh.osd_set_epochs)
-        {
-            nh.osd_set_epochs[pg.osd_set.join(' ')] = { osd_set: pg.osd_set.map(osd_num => Number(osd_num)) };
+            nh.osd_sets[pg.join(' ')] = pg.map(osd_num => Number(osd_num));
         }
     }
     if (oh && oh.all_peers && oh.all_peers.length)
@@ -46,20 +39,20 @@ function add_pg_history(new_pg_history, new_pg, prev_pgs, prev_pg_history, old_p
 
 function finish_pg_history(merged_history)
 {
-    merged_history.osd_set_epochs = Object.values(merged_history.osd_set_epochs);
+    merged_history.osd_sets = Object.values(merged_history.osd_sets);
     merged_history.all_peers = Object.values(merged_history.all_peers);
 }
 
-function scale_pg_count(prev_pgs, prev_pg_history, new_pg_history, new_pg_count)
+function scale_pg_count(prev_pgs, real_prev_pgs, prev_pg_history, new_pg_history, new_pg_count)
 {
-    const old_pg_count = prev_pgs.length;
+    const old_pg_count = real_prev_pgs.length;
     // Add all possibly intersecting PGs to the history of new PGs
     if (!(new_pg_count % old_pg_count))
     {
         // New PG count is a multiple of old PG count
         for (let i = 0; i < new_pg_count; i++)
         {
-            add_pg_history(new_pg_history, i, prev_pgs, prev_pg_history, i % old_pg_count);
+            add_pg_history(new_pg_history, i, real_prev_pgs, prev_pg_history, i % old_pg_count);
             finish_pg_history(new_pg_history[i]);
         }
     }
@@ -71,7 +64,7 @@ function scale_pg_count(prev_pgs, prev_pg_history, new_pg_history, new_pg_count)
         {
             for (let j = 0; j < mul; j++)
             {
-                add_pg_history(new_pg_history, i, prev_pgs, prev_pg_history, i+j*new_pg_count);
+                add_pg_history(new_pg_history, i, real_prev_pgs, prev_pg_history, i+j*new_pg_count);
             }
             finish_pg_history(new_pg_history[i]);
         }
@@ -83,7 +76,7 @@ function scale_pg_count(prev_pgs, prev_pg_history, new_pg_history, new_pg_count)
         let merged_history = {};
         for (let i = 0; i < old_pg_count; i++)
         {
-            add_pg_history(merged_history, 1, prev_pgs, prev_pg_history, i);
+            add_pg_history(merged_history, 1, real_prev_pgs, prev_pg_history, i);
         }
         finish_pg_history(merged_history[1]);
         for (let i = 0; i < new_pg_count; i++)
@@ -97,15 +90,15 @@ function scale_pg_count(prev_pgs, prev_pg_history, new_pg_history, new_pg_count)
         new_pg_history[i] = null;
     }
     // Just for the lp_solve optimizer - pick a "previous" PG for each "new" one
-    if (old_pg_count < new_pg_count)
+    if (prev_pgs.length < new_pg_count)
     {
-        for (let i = old_pg_count; i < new_pg_count; i++)
+        for (let i = prev_pgs.length; i < new_pg_count; i++)
         {
-            prev_pgs[i] = prev_pgs[i % old_pg_count];
+            prev_pgs[i] = prev_pgs[i % prev_pgs.length];
         }
     }
-    else if (old_pg_count > new_pg_count)
+    else if (prev_pgs.length > new_pg_count)
     {
-        prev_pgs.splice(new_pg_count, old_pg_count-new_pg_count);
+        prev_pgs.splice(new_pg_count, prev_pgs.length-new_pg_count);
     }
 }

mon/make-etcd

@@ -63,7 +63,7 @@ Wants=network-online.target local-fs.target time-sync.target
 
 [Service]
 Restart=always
-ExecStart=/usr/local/bin/etcd -name etcd${num} --data-dir /var/lib/etcd${num}.etcd \\
+ExecStart=etcd -name etcd${num} --data-dir /var/lib/etcd${num}.etcd \\
     --advertise-client-urls http://${etcds[num]}:2379 --listen-client-urls http://${etcds[num]}:2379 \\
     --initial-advertise-peer-urls http://${etcds[num]}:2380 --listen-peer-urls http://${etcds[num]}:2380 \\
     --initial-cluster-token vitastor-etcd-1 --initial-cluster ${etcd_cluster} \\

mon/mon.js

@@ -104,12 +104,21 @@ const etcd_tree = {
             autosync_writes: 128,
             client_queue_depth: 128, // unused
             recovery_queue_depth: 4,
+            recovery_pg_switch: 128,
             recovery_sync_batch: 16,
             no_recovery: false,
             no_rebalance: false,
             print_stats_interval: 3,
             slow_log_interval: 10,
             inode_vanish_time: 60,
+            auto_scrub: false,
+            no_scrub: false,
+            scrub_interval: '30d', // 1s/1m/1h/1d
+            scrub_queue_depth: 1,
+            scrub_sleep: 0, // milliseconds
+            scrub_list_limit: 1000, // objects to list on one scrub iteration
+            scrub_find_best: true,
+            scrub_ec_max_bruteforce: 100, // maximum EC error locator brute-force iterators
             // blockstore - fixed in superblock
             block_size,
             disk_alignment,
@@ -172,6 +181,8 @@ const etcd_tree = {
                 osd_tags?: 'nvme' | [ 'nvme', ... ],
                 // prefer to put primary on OSD with these tags
                 primary_affinity_tags?: 'nvme' | [ 'nvme', ... ],
+                // scrub interval
+                scrub_interval?: '30d',
             },
             ...
         }, */
@@ -267,7 +278,7 @@ const etcd_tree = {
                     primary: osd_num_t,
                     state: ("starting"|"peering"|"incomplete"|"active"|"repeering"|"stopping"|"offline"|
                         "degraded"|"has_incomplete"|"has_degraded"|"has_misplaced"|"has_unclean"|
-                        "has_invalid"|"left_on_dead")[],
+                        "has_invalid"|"has_inconsistent"|"has_corrupted"|"left_on_dead"|"scrubbing")[],
                 }
             }, */
         },
@@ -286,14 +297,10 @@ const etcd_tree = {
         history: {
             /* <pool_id>: {
                 <pg_id>: {
-                    osd_set_epochs: {
-                        osd_set: osd_num_t[],
-                        min_epoch: uint64_t,
-                        max_epoch: uint64_t,
-                    }[],
-                    osd_sets: osd_num_t[][], // outdated
+                    osd_sets: osd_num_t[][],
                     all_peers: osd_num_t[],
                     epoch: uint64_t,
+                    next_scrub: uint64_t,
                 },
             }, */
         },
@@ -384,6 +391,7 @@ class Mon
         this.etcd_start_timeout = (config.etcd_start_timeout || 5) * 1000;
         this.state = JSON.parse(JSON.stringify(this.constructor.etcd_tree));
         this.signals_set = false;
+        this.stat_time = Date.now();
         this.ws = null;
         this.ws_alive = false;
         this.ws_keepalive_timer = null;
@@ -853,7 +861,7 @@ class Mon
         }
         for (const node_id in tree)
         {
-            if (node_id === '')
+            if (node_id === '' || tree[node_id].level === 'osd' && (!tree[node_id].size || tree[node_id].size <= 0))
             {
                 continue;
             }
@@ -961,9 +969,9 @@ class Mon
         return alive_set[this.rng() % alive_set.length];
     }
 
-    save_new_pgs_txn(request, pool_id, up_osds, osd_tree, prev_pgs, new_pgs, pg_history)
+    save_new_pgs_txn(save_to, request, pool_id, up_osds, osd_tree, prev_pgs, new_pgs, pg_history)
     {
-        const aff_osds = this.get_affinity_osds(this.state.config.pools[pool_id], up_osds, osd_tree);
+        const aff_osds = this.get_affinity_osds(this.state.config.pools[pool_id] || {}, up_osds, osd_tree);
         const pg_items = {};
         this.reset_rng();
         new_pgs.map((osd_set, i) =>
@@ -973,6 +981,18 @@ class Mon
                 osd_set,
                 primary: this.pick_primary(pool_id, osd_set, up_osds, aff_osds),
             };
+            if (prev_pgs[i] && prev_pgs[i].join(' ') != osd_set.join(' ') &&
+                prev_pgs[i].filter(osd_num => osd_num).length > 0)
+            {
+                pg_history[i] = pg_history[i] || {};
+                pg_history[i].osd_sets = pg_history[i].osd_sets || [];
+                pg_history[i].osd_sets.push(prev_pgs[i]);
+            }
+            if (pg_history[i] && pg_history[i].osd_sets)
+            {
+                pg_history[i].osd_sets = Object.values(pg_history[i].osd_sets
+                    .reduce((a, c) => { a[c.join(' ')] = c; return a; }, {}));
+            }
         });
         for (let i = 0; i < new_pgs.length || i < prev_pgs.length; i++)
         {
@@ -1002,14 +1022,14 @@ class Mon
                 });
             }
         }
-        this.state.config.pgs.items = this.state.config.pgs.items || {};
+        save_to.items = save_to.items || {};
         if (!new_pgs.length)
         {
-            delete this.state.config.pgs.items[pool_id];
+            delete save_to.items[pool_id];
         }
         else
         {
-            this.state.config.pgs.items[pool_id] = pg_items;
+            save_to.items[pool_id] = pg_items;
         }
     }
 
@@ -1153,6 +1173,7 @@ class Mon
         if (this.state.config.pgs.hash != tree_hash)
         {
             // Something has changed
+            const new_config_pgs = JSON.parse(JSON.stringify(this.state.config.pgs));
             const etcd_request = { compare: [], success: [] };
             for (const pool_id in (this.state.config.pgs||{}).items||{})
             {
@@ -1173,7 +1194,7 @@ class Mon
                     etcd_request.success.push({ requestDeleteRange: {
                         key: b64(this.etcd_prefix+'/pool/stats/'+pool_id),
                     } });
-                    this.save_new_pgs_txn(etcd_request, pool_id, up_osds, osd_tree, prev_pgs, [], []);
+                    this.save_new_pgs_txn(new_config_pgs, etcd_request, pool_id, up_osds, osd_tree, prev_pgs, [], []);
                 }
             }
             for (const pool_id in this.state.config.pools)
@@ -1227,7 +1248,7 @@ class Mon
                             return;
                         }
                         const new_pg_history = [];
-                        PGUtil.scale_pg_count(prev_pgs, pg_history, new_pg_history, pool_cfg.pg_count);
+                        PGUtil.scale_pg_count(prev_pgs, real_prev_pgs, pg_history, new_pg_history, pool_cfg.pg_count);
                         pg_history = new_pg_history;
                     }
                     for (const pg of prev_pgs)
@@ -1280,14 +1301,15 @@ class Mon
                     key: b64(this.etcd_prefix+'/pool/stats/'+pool_id),
                     value: b64(JSON.stringify(this.state.pool.stats[pool_id])),
                 } });
-                this.save_new_pgs_txn(etcd_request, pool_id, up_osds, osd_tree, real_prev_pgs, optimize_result.int_pgs, pg_history);
+                this.save_new_pgs_txn(new_config_pgs, etcd_request, pool_id, up_osds, osd_tree, real_prev_pgs, optimize_result.int_pgs, pg_history);
             }
-            this.state.config.pgs.hash = tree_hash;
-            await this.save_pg_config(etcd_request);
+            new_config_pgs.hash = tree_hash;
+            await this.save_pg_config(new_config_pgs, etcd_request);
         }
         else
         {
             // Nothing changed, but we still want to recheck the distribution of primaries
+            let new_config_pgs;
             let changed = false;
             for (const pool_id in this.state.config.pools)
             {
@@ -1307,31 +1329,35 @@ class Mon
                         const new_primary = this.pick_primary(pool_id, pg_cfg.osd_set, up_osds, aff_osds);
                         if (pg_cfg.primary != new_primary)
                         {
+                            if (!new_config_pgs)
+                            {
+                                new_config_pgs = JSON.parse(JSON.stringify(this.state.config.pgs));
+                            }
                             console.log(
                                 `Moving pool ${pool_id} (${pool_cfg.name || 'unnamed'}) PG ${pg_num}`+
                                 ` primary OSD from ${pg_cfg.primary} to ${new_primary}`
                             );
                             changed = true;
-                            pg_cfg.primary = new_primary;
+                            new_config_pgs.items[pool_id][pg_num].primary = new_primary;
                         }
                     }
                 }
             }
             if (changed)
             {
-                await this.save_pg_config();
+                await this.save_pg_config(new_config_pgs);
             }
         }
     }
 
-    async save_pg_config(etcd_request = { compare: [], success: [] })
+    async save_pg_config(new_config_pgs, etcd_request = { compare: [], success: [] })
     {
         etcd_request.compare.push(
             { key: b64(this.etcd_prefix+'/mon/master'), target: 'LEASE', lease: ''+this.etcd_lease_id },
             { key: b64(this.etcd_prefix+'/config/pgs'), target: 'MOD', mod_revision: ''+this.etcd_watch_revision, result: 'LESS' },
         );
         etcd_request.success.push(
-            { requestPut: { key: b64(this.etcd_prefix+'/config/pgs'), value: b64(JSON.stringify(this.state.config.pgs)) } },
+            { requestPut: { key: b64(this.etcd_prefix+'/config/pgs'), value: b64(JSON.stringify(new_config_pgs)) } },
         );
         const res = await this.etcd_call('/kv/txn', etcd_request, this.config.etcd_mon_timeout, 0);
         if (!res.succeeded)
@@ -1385,65 +1411,75 @@ class Mon
         }
     }
 
+    derive_osd_stats(st, prev)
+    {
+        const zero_stats = { op: { bps: 0n, iops: 0n, lat: 0n }, subop: { iops: 0n, lat: 0n }, recovery: { bps: 0n, iops: 0n } };
+        const diff = { op_stats: {}, subop_stats: {}, recovery_stats: {} };
+        if (!st || !st.time || prev && (prev.time || this.stat_time/1000) >= st.time)
+        {
+            return diff;
+        }
+        const timediff = BigInt(st.time*1000 - (prev && prev.time*1000 || this.stat_time));
+        for (const op in st.op_stats||{})
+        {
+            const pr = prev && prev.op_stats && prev.op_stats[op];
+            let c = st.op_stats[op];
+            c = { bytes: BigInt(c.bytes||0), usec: BigInt(c.usec||0), count: BigInt(c.count||0) };
+            const b = c.bytes - BigInt(pr && pr.bytes||0);
+            const us = c.usec - BigInt(pr && pr.usec||0);
+            const n = c.count - BigInt(pr && pr.count||0);
+            if (n > 0)
+                diff.op_stats[op] = { ...c, bps: b*1000n/timediff, iops: n*1000n/timediff, lat: us/n };
+        }
+        for (const op in st.subop_stats||{})
+        {
+            const pr = prev && prev.subop_stats && prev.subop_stats[op];
+            let c = st.subop_stats[op];
+            c = { usec: BigInt(c.usec||0), count: BigInt(c.count||0) };
+            const us = c.usec - BigInt(pr && pr.usec||0);
+            const n = c.count - BigInt(pr && pr.count||0);
+            if (n > 0)
+                diff.subop_stats[op] = { ...c, iops: n*1000n/timediff, lat: us/n };
+        }
+        for (const op in st.recovery_stats||{})
+        {
+            const pr = prev && prev.recovery_stats && prev.recovery_stats[op];
+            let c = st.recovery_stats[op];
+            c = { bytes: BigInt(c.bytes||0), count: BigInt(c.count||0) };
+            const b = c.bytes - BigInt(pr && pr.bytes||0);
+            const n = c.count - BigInt(pr && pr.count||0);
+            if (n > 0)
+                diff.recovery_stats[op] = { ...c, bps: b*1000n/timediff, iops: n*1000n/timediff };
+        }
+        return diff;
+    }
+
     sum_op_stats(timestamp, prev_stats)
     {
-        const op_stats = {}, subop_stats = {}, recovery_stats = {};
+        const sum_diff = { op_stats: {}, subop_stats: {}, recovery_stats: {} };
+        if (!prev_stats || prev_stats.timestamp >= timestamp)
+        {
+            return sum_diff;
+        }
+        const tm = BigInt(timestamp - (prev_stats.timestamp || 0));
+        // Sum derived values instead of deriving summed
         for (const osd in this.state.osd.stats)
         {
-            const st = this.state.osd.stats[osd]||{};
-            for (const op in st.op_stats||{})
+            const derived = this.derive_osd_stats(this.state.osd.stats[osd],
+                this.prev_stats && this.prev_stats.osd_stats && this.prev_stats.osd_stats[osd]);
+            for (const type in derived)
             {
-                op_stats[op] = op_stats[op] || { count: 0n, usec: 0n, bytes: 0n };
-                op_stats[op].count += BigInt(st.op_stats[op].count||0);
-                op_stats[op].usec += BigInt(st.op_stats[op].usec||0);
-                op_stats[op].bytes += BigInt(st.op_stats[op].bytes||0);
-            }
-            for (const op in st.subop_stats||{})
-            {
-                subop_stats[op] = subop_stats[op] || { count: 0n, usec: 0n };
-                subop_stats[op].count += BigInt(st.subop_stats[op].count||0);
-                subop_stats[op].usec += BigInt(st.subop_stats[op].usec||0);
-            }
-            for (const op in st.recovery_stats||{})
-            {
-                recovery_stats[op] = recovery_stats[op] || { count: 0n, bytes: 0n };
-                recovery_stats[op].count += BigInt(st.recovery_stats[op].count||0);
-                recovery_stats[op].bytes += BigInt(st.recovery_stats[op].bytes||0);
+                for (const op in derived[type])
+                {
+                    for (const k in derived[type][op])
+                    {
+                        sum_diff[type][op] = sum_diff[type][op] || {};
+                        sum_diff[type][op][k] = (sum_diff[type][op][k] || 0n) + derived[type][op][k];
+                    }
+                }
             }
         }
-        if (prev_stats && prev_stats.timestamp >= timestamp)
-        {
-            prev_stats = null;
-        }
-        const tm = prev_stats ? BigInt(timestamp - prev_stats.timestamp) : 0;
-        for (const op in op_stats)
-        {
-            if (prev_stats && prev_stats.op_stats && prev_stats.op_stats[op])
-            {
-                op_stats[op].bps = (op_stats[op].bytes - prev_stats.op_stats[op].bytes) * 1000n / tm;
-                op_stats[op].iops = (op_stats[op].count - prev_stats.op_stats[op].count) * 1000n / tm;
-                op_stats[op].lat = (op_stats[op].usec - prev_stats.op_stats[op].usec)
-                    / ((op_stats[op].count - prev_stats.op_stats[op].count) || 1n);
-            }
-        }
-        for (const op in subop_stats)
-        {
-            if (prev_stats && prev_stats.subop_stats && prev_stats.subop_stats[op])
-            {
-                subop_stats[op].iops = (subop_stats[op].count - prev_stats.subop_stats[op].count) * 1000n / tm;
-                subop_stats[op].lat = (subop_stats[op].usec - prev_stats.subop_stats[op].usec)
-                    / ((subop_stats[op].count - prev_stats.subop_stats[op].count) || 1n);
-            }
-        }
-        for (const op in recovery_stats)
-        {
-            if (prev_stats && prev_stats.recovery_stats && prev_stats.recovery_stats[op])
-            {
-                recovery_stats[op].bps = (recovery_stats[op].bytes - prev_stats.recovery_stats[op].bytes) * 1000n / tm;
-                recovery_stats[op].iops = (recovery_stats[op].count - prev_stats.recovery_stats[op].count) * 1000n / tm;
-            }
-        }
-        return { op_stats, subop_stats, recovery_stats };
+        return sum_diff;
     }
 
     sum_object_counts()
@@ -1602,7 +1638,8 @@ class Mon
             this.prev_stats ? this.prev_stats.inode_stats : null,
             timestamp, this.prev_stats ? this.prev_stats.timestamp : null
         );
-        this.prev_stats = { timestamp, ...stats, inode_stats };
+        this.prev_stats = { timestamp, inode_stats, osd_stats: { ...this.state.osd.stats } };
+        this.stat_time = Date.now();
         stats.object_counts = object_counts;
         stats.object_bytes = object_bytes;
         stats = this.serialize_bigints(stats);
@@ -1718,13 +1755,14 @@ class Mon
         else if (key_parts[0] === 'osd' && key_parts[1] === 'stats')
         {
             // Recheck OSD tree on OSD addition/deletion
+            const osd_num = key_parts[2];
             if ((!old) != (!kv.value) || old && kv.value && old.size != kv.value.size)
             {
                 this.schedule_recheck();
             }
             // Recheck PGs <osd_out_time> after last OSD statistics report
             this.schedule_next_recheck_at(
-                !this.state.osd.stats[key[2]] ? 0 : this.state.osd.stats[key[2]].time+this.config.osd_out_time
+                !this.state.osd.stats[osd_num] ? 0 : this.state.osd.stats[osd_num].time+this.config.osd_out_time
             );
         }
     }
@@ -1810,6 +1848,7 @@ function POST(url, body, timeout)
             clearTimeout(timer_id);
             let res_body = '';
             res.setEncoding('utf8');
+            res.on('error', (error) => ok({ error }));
             res.on('data', chunk => { res_body += chunk; });
             res.on('end', () =>
             {
@@ -1829,6 +1868,8 @@ function POST(url, body, timeout)
                 }
             });
         });
+        req.on('error', (error) => ok({ error }));
+        req.on('close', () => ok({ error: new Error('Connection closed prematurely') }));
         req.write(body_text);
         req.end();
     });

patches/VitastorPlugin.pm

@@ -388,8 +388,6 @@ sub unmap_volume
     my ($class, $storeid, $scfg, $volname, $snapname) = @_;
     my $prefix = defined $scfg->{vitastor_prefix} ? $scfg->{vitastor_prefix} : 'pve/';
 
-    return 1 if !$scfg->{vitastor_nbd};
-
     my ($vtype, $name, $vmid) = $class->parse_volname($volname);
     $name .= '@'.$snapname if $snapname;
 
@@ -413,7 +411,7 @@ sub activate_volume
 sub deactivate_volume
 {
     my ($class, $storeid, $scfg, $volname, $snapname, $cache) = @_;
-    $class->unmap_volume($storeid, $scfg, $volname, $snapname);
+    $class->unmap_volume($storeid, $scfg, $volname, $snapname) if $scfg->{vitastor_nbd};
     return 1;
 }
 

patches/cinder-vitastor.py

@@ -50,7 +50,7 @@ from cinder.volume import configuration
 from cinder.volume import driver
 from cinder.volume import volume_utils
 
-VERSION = '0.8.8'
+VERSION = '0.9.3'
 
 LOG = logging.getLogger(__name__)
 

patches/libvirt-9.0-vitastor.diff

@@ -0,0 +1,644 @@
+commit e6f935157944279c2c0634915c3c00feeec748c9
+Author: Vitaliy Filippov <vitalif@yourcmc.ru>
+Date:   Mon Jun 19 00:58:19 2023 +0300
+
+    Add Vitastor support
+
+diff --git a/include/libvirt/libvirt-storage.h b/include/libvirt/libvirt-storage.h
+index aaad4a3..5f5daa8 100644
+--- a/include/libvirt/libvirt-storage.h
++++ b/include/libvirt/libvirt-storage.h
+@@ -326,6 +326,7 @@ typedef enum {
+     VIR_CONNECT_LIST_STORAGE_POOLS_ZFS           = 1 << 17, /* (Since: 1.2.8) */
+     VIR_CONNECT_LIST_STORAGE_POOLS_VSTORAGE      = 1 << 18, /* (Since: 3.1.0) */
+     VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI_DIRECT  = 1 << 19, /* (Since: 5.6.0) */
++    VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR      = 1 << 20, /* (Since: 5.0.0) */
+ } virConnectListAllStoragePoolsFlags;
+ 
+ int                     virConnectListAllStoragePools(virConnectPtr conn,
+diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
+index 45965fa..b7c23d3 100644
+--- a/src/conf/domain_conf.c
++++ b/src/conf/domain_conf.c
+@@ -7103,7 +7103,8 @@ virDomainDiskSourceNetworkParse(xmlNodePtr node,
+     src->configFile = virXPathString("string(./config/@file)", ctxt);
+ 
+     if (src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTP ||
+-        src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTPS)
++        src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTPS ||
++        src->protocol == VIR_STORAGE_NET_PROTOCOL_VITASTOR)
+         src->query = virXMLPropString(node, "query");
+ 
+     if (virDomainStorageNetworkParseHosts(node, ctxt, &src->hosts, &src->nhosts) < 0)
+@@ -30121,6 +30122,7 @@ virDomainStorageSourceTranslateSourcePool(virStorageSource *src,
+ 
+     case VIR_STORAGE_POOL_MPATH:
+     case VIR_STORAGE_POOL_RBD:
++    case VIR_STORAGE_POOL_VITASTOR:
+     case VIR_STORAGE_POOL_SHEEPDOG:
+     case VIR_STORAGE_POOL_GLUSTER:
+     case VIR_STORAGE_POOL_LAST:
+diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c
+index 5a9bf20..05058b8 100644
+--- a/src/conf/domain_validate.c
++++ b/src/conf/domain_validate.c
+@@ -494,6 +494,7 @@ virDomainDiskDefValidateSourceChainOne(const virStorageSource *src)
+         case VIR_STORAGE_NET_PROTOCOL_RBD:
+             break;
+ 
++        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+         case VIR_STORAGE_NET_PROTOCOL_NBD:
+         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
+@@ -541,7 +542,7 @@ virDomainDiskDefValidateSourceChainOne(const virStorageSource *src)
+         }
+     }
+ 
+-    /* internal snapshots and config files are currently supported only with rbd: */
++    /* internal snapshots are currently supported only with rbd: */
+     if (virStorageSourceGetActualType(src) != VIR_STORAGE_TYPE_NETWORK &&
+         src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD) {
+         if (src->snapshot) {
+@@ -550,11 +551,15 @@ virDomainDiskDefValidateSourceChainOne(const virStorageSource *src)
+                              "only with 'rbd' disks"));
+             return -1;
+         }
+-
++    }
++    /* config files are currently supported only with rbd and vitastor: */
++    if (virStorageSourceGetActualType(src) != VIR_STORAGE_TYPE_NETWORK &&
++        src->protocol != VIR_STORAGE_NET_PROTOCOL_RBD &&
++        src->protocol != VIR_STORAGE_NET_PROTOCOL_VITASTOR) {
+         if (src->configFile) {
+             virReportError(VIR_ERR_XML_ERROR, "%s",
+                            _("<config> element is currently supported "
+-                             "only with 'rbd' disks"));
++                             "only with 'rbd' and 'vitastor' disks"));
+             return -1;
+         }
+     }
+diff --git a/src/conf/schemas/domaincommon.rng b/src/conf/schemas/domaincommon.rng
+index 6cb0a20..8bf7de9 100644
+--- a/src/conf/schemas/domaincommon.rng
++++ b/src/conf/schemas/domaincommon.rng
+@@ -1972,6 +1972,35 @@
+     </element>
+   </define>
+ 
++  <define name="diskSourceNetworkProtocolVitastor">
++    <element name="source">
++      <interleave>
++        <attribute name="protocol">
++          <value>vitastor</value>
++        </attribute>
++        <ref name="diskSourceCommon"/>
++        <optional>
++          <attribute name="name"/>
++        </optional>
++        <optional>
++          <attribute name="query"/>
++        </optional>
++        <zeroOrMore>
++          <ref name="diskSourceNetworkHost"/>
++        </zeroOrMore>
++        <optional>
++          <element name="config">
++            <attribute name="file">
++              <ref name="absFilePath"/>
++            </attribute>
++            <empty/>
++          </element>
++        </optional>
++        <empty/>
++      </interleave>
++    </element>
++  </define>
++
+   <define name="diskSourceNetworkProtocolISCSI">
+     <element name="source">
+       <attribute name="protocol">
+@@ -2264,6 +2293,7 @@
+       <ref name="diskSourceNetworkProtocolSimple"/>
+       <ref name="diskSourceNetworkProtocolVxHS"/>
+       <ref name="diskSourceNetworkProtocolNFS"/>
++      <ref name="diskSourceNetworkProtocolVitastor"/>
+     </choice>
+   </define>
+ 
+diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
+index f5a9636..8339bc4 100644
+--- a/src/conf/storage_conf.c
++++ b/src/conf/storage_conf.c
+@@ -56,7 +56,7 @@ VIR_ENUM_IMPL(virStoragePool,
+               "logical", "disk", "iscsi",
+               "iscsi-direct", "scsi", "mpath",
+               "rbd", "sheepdog", "gluster",
+-              "zfs", "vstorage",
++              "zfs", "vstorage", "vitastor",
+ );
+ 
+ VIR_ENUM_IMPL(virStoragePoolFormatFileSystem,
+@@ -242,6 +242,18 @@ static virStoragePoolTypeInfo poolTypeInfo[] = {
+           .formatToString = virStorageFileFormatTypeToString,
+       }
+     },
++    {.poolType = VIR_STORAGE_POOL_VITASTOR,
++     .poolOptions = {
++         .flags = (VIR_STORAGE_POOL_SOURCE_HOST |
++                   VIR_STORAGE_POOL_SOURCE_NETWORK |
++                   VIR_STORAGE_POOL_SOURCE_NAME),
++      },
++      .volOptions = {
++          .defaultFormat = VIR_STORAGE_FILE_RAW,
++          .formatFromString = virStorageVolumeFormatFromString,
++          .formatToString = virStorageFileFormatTypeToString,
++      }
++    },
+     {.poolType = VIR_STORAGE_POOL_SHEEPDOG,
+      .poolOptions = {
+          .flags = (VIR_STORAGE_POOL_SOURCE_HOST |
+@@ -542,6 +554,11 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
+                        _("element 'name' is mandatory for RBD pool"));
+         return -1;
+     }
++    if (pool_type == VIR_STORAGE_POOL_VITASTOR && source->name == NULL) {
++        virReportError(VIR_ERR_XML_ERROR, "%s",
++                       _("element 'name' is mandatory for Vitastor pool"));
++        return -1;
++    }
+ 
+     if (options->formatFromString) {
+         g_autofree char *format = NULL;
+@@ -1132,6 +1149,7 @@ virStoragePoolDefFormatBuf(virBuffer *buf,
+     /* RBD, Sheepdog, Gluster and Iscsi-direct devices are not local block devs nor
+      * files, so they don't have a target */
+     if (def->type != VIR_STORAGE_POOL_RBD &&
++        def->type != VIR_STORAGE_POOL_VITASTOR &&
+         def->type != VIR_STORAGE_POOL_SHEEPDOG &&
+         def->type != VIR_STORAGE_POOL_GLUSTER &&
+         def->type != VIR_STORAGE_POOL_ISCSI_DIRECT) {
+diff --git a/src/conf/storage_conf.h b/src/conf/storage_conf.h
+index fc67957..720c07e 100644
+--- a/src/conf/storage_conf.h
++++ b/src/conf/storage_conf.h
+@@ -103,6 +103,7 @@ typedef enum {
+     VIR_STORAGE_POOL_GLUSTER,  /* Gluster device */
+     VIR_STORAGE_POOL_ZFS,      /* ZFS */
+     VIR_STORAGE_POOL_VSTORAGE, /* Virtuozzo Storage */
++    VIR_STORAGE_POOL_VITASTOR, /* Vitastor */
+ 
+     VIR_STORAGE_POOL_LAST,
+ } virStoragePoolType;
+@@ -454,6 +455,7 @@ VIR_ENUM_DECL(virStoragePartedFs);
+                  VIR_CONNECT_LIST_STORAGE_POOLS_SCSI     | \
+                  VIR_CONNECT_LIST_STORAGE_POOLS_MPATH    | \
+                  VIR_CONNECT_LIST_STORAGE_POOLS_RBD      | \
++                 VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR | \
+                  VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG | \
+                  VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER  | \
+                  VIR_CONNECT_LIST_STORAGE_POOLS_ZFS      | \
+diff --git a/src/conf/storage_source_conf.c b/src/conf/storage_source_conf.c
+index cecd7e8..d7b79a4 100644
+--- a/src/conf/storage_source_conf.c
++++ b/src/conf/storage_source_conf.c
+@@ -87,6 +87,7 @@ VIR_ENUM_IMPL(virStorageNetProtocol,
+               "ssh",
+               "vxhs",
+               "nfs",
++              "vitastor",
+ );
+ 
+ 
+@@ -1286,6 +1287,7 @@ virStorageSourceNetworkDefaultPort(virStorageNetProtocol protocol)
+         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
+             return 24007;
+ 
++        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+         case VIR_STORAGE_NET_PROTOCOL_RBD:
+             /* we don't provide a default for RBD */
+             return 0;
+diff --git a/src/conf/storage_source_conf.h b/src/conf/storage_source_conf.h
+index 14a6825..eb4acac 100644
+--- a/src/conf/storage_source_conf.h
++++ b/src/conf/storage_source_conf.h
+@@ -128,6 +128,7 @@ typedef enum {
+     VIR_STORAGE_NET_PROTOCOL_SSH,
+     VIR_STORAGE_NET_PROTOCOL_VXHS,
+     VIR_STORAGE_NET_PROTOCOL_NFS,
++    VIR_STORAGE_NET_PROTOCOL_VITASTOR,
+ 
+     VIR_STORAGE_NET_PROTOCOL_LAST
+ } virStorageNetProtocol;
+diff --git a/src/conf/virstorageobj.c b/src/conf/virstorageobj.c
+index e6c187e..035b423 100644
+--- a/src/conf/virstorageobj.c
++++ b/src/conf/virstorageobj.c
+@@ -1433,6 +1433,7 @@ virStoragePoolObjSourceFindDuplicateCb(const void *payload,
+             return 1;
+         break;
+ 
++    case VIR_STORAGE_POOL_VITASTOR:
+     case VIR_STORAGE_POOL_ISCSI_DIRECT:
+     case VIR_STORAGE_POOL_RBD:
+     case VIR_STORAGE_POOL_LAST:
+@@ -1918,6 +1919,8 @@ virStoragePoolObjMatch(virStoragePoolObj *obj,
+                (obj->def->type == VIR_STORAGE_POOL_MPATH))   ||
+               (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_RBD) &&
+                (obj->def->type == VIR_STORAGE_POOL_RBD))     ||
++              (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR) &&
++               (obj->def->type == VIR_STORAGE_POOL_VITASTOR)) ||
+               (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG) &&
+                (obj->def->type == VIR_STORAGE_POOL_SHEEPDOG)) ||
+               (MATCH(VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER) &&
+diff --git a/src/libvirt-storage.c b/src/libvirt-storage.c
+index 8490034..ab2cdaa 100644
+--- a/src/libvirt-storage.c
++++ b/src/libvirt-storage.c
+@@ -94,6 +94,7 @@ virStoragePoolGetConnect(virStoragePoolPtr pool)
+  * VIR_CONNECT_LIST_STORAGE_POOLS_SCSI
+  * VIR_CONNECT_LIST_STORAGE_POOLS_MPATH
+  * VIR_CONNECT_LIST_STORAGE_POOLS_RBD
++ * VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR
+  * VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG
+  * VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER
+  * VIR_CONNECT_LIST_STORAGE_POOLS_ZFS
+diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
+index 17ac880..59711b5 100644
+--- a/src/libxl/libxl_conf.c
++++ b/src/libxl/libxl_conf.c
+@@ -970,6 +970,7 @@ libxlMakeNetworkDiskSrcStr(virStorageSource *src,
+     case VIR_STORAGE_NET_PROTOCOL_SSH:
+     case VIR_STORAGE_NET_PROTOCOL_VXHS:
+     case VIR_STORAGE_NET_PROTOCOL_NFS:
++    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+     case VIR_STORAGE_NET_PROTOCOL_LAST:
+     case VIR_STORAGE_NET_PROTOCOL_NONE:
+         virReportError(VIR_ERR_NO_SUPPORT,
+diff --git a/src/libxl/xen_xl.c b/src/libxl/xen_xl.c
+index 6919325..55ffc32 100644
+--- a/src/libxl/xen_xl.c
++++ b/src/libxl/xen_xl.c
+@@ -1445,6 +1445,7 @@ xenFormatXLDiskSrcNet(virStorageSource *src)
+     case VIR_STORAGE_NET_PROTOCOL_SSH:
+     case VIR_STORAGE_NET_PROTOCOL_VXHS:
+     case VIR_STORAGE_NET_PROTOCOL_NFS:
++    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+     case VIR_STORAGE_NET_PROTOCOL_LAST:
+     case VIR_STORAGE_NET_PROTOCOL_NONE:
+         virReportError(VIR_ERR_NO_SUPPORT,
+diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
+index e865aa1..40162af 100644
+--- a/src/qemu/qemu_block.c
++++ b/src/qemu/qemu_block.c
+@@ -604,6 +604,38 @@ qemuBlockStorageSourceGetRBDProps(virStorageSource *src,
+ }
+ 
+ 
++static virJSONValue *
++qemuBlockStorageSourceGetVitastorProps(virStorageSource *src)
++{
++    virJSONValue *ret = NULL;
++    virStorageNetHostDef *host;
++    size_t i;
++    g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
++    g_autofree char *etcd = NULL;
++
++    for (i = 0; i < src->nhosts; i++) {
++        host = src->hosts + i;
++        if ((virStorageNetHostTransport)host->transport != VIR_STORAGE_NET_HOST_TRANS_TCP) {
++            return NULL;
++        }
++        virBufferAsprintf(&buf, i > 0 ? ",%s:%u" : "%s:%u", host->name, host->port);
++    }
++    if (src->nhosts > 0) {
++        etcd = virBufferContentAndReset(&buf);
++    }
++
++    if (virJSONValueObjectAdd(&ret,
++                              "S:etcd-host", etcd,
++                              "S:etcd-prefix", src->query,
++                              "S:config-path", src->configFile,
++                              "s:image", src->path,
++                              NULL) < 0)
++        return NULL;
++
++    return ret;
++}
++
++
+ static virJSONValue *
+ qemuBlockStorageSourceGetSheepdogProps(virStorageSource *src)
+ {
+@@ -917,6 +949,12 @@ qemuBlockStorageSourceGetBackendProps(virStorageSource *src,
+                 return NULL;
+             break;
+ 
++        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
++            driver = "vitastor";
++            if (!(fileprops = qemuBlockStorageSourceGetVitastorProps(src)))
++                return NULL;
++            break;
++
+         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+             driver = "sheepdog";
+             if (!(fileprops = qemuBlockStorageSourceGetSheepdogProps(src)))
+@@ -1860,6 +1898,7 @@ qemuBlockGetBackingStoreString(virStorageSource *src,
+ 
+             case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+             case VIR_STORAGE_NET_PROTOCOL_RBD:
++            case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+             case VIR_STORAGE_NET_PROTOCOL_VXHS:
+             case VIR_STORAGE_NET_PROTOCOL_NFS:
+             case VIR_STORAGE_NET_PROTOCOL_SSH:
+@@ -2242,6 +2281,12 @@ qemuBlockStorageSourceCreateGetStorageProps(virStorageSource *src,
+                 return -1;
+             break;
+ 
++        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
++            driver = "vitastor";
++            if (!(location = qemuBlockStorageSourceGetVitastorProps(src)))
++                return -1;
++            break;
++
+         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+             driver = "sheepdog";
+             if (!(location = qemuBlockStorageSourceGetSheepdogProps(src)))
+diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
+index 2eb5653..60ee82d 100644
+--- a/src/qemu/qemu_domain.c
++++ b/src/qemu/qemu_domain.c
+@@ -4958,7 +4958,8 @@ qemuDomainValidateStorageSource(virStorageSource *src,
+     if (src->query &&
+         (actualType != VIR_STORAGE_TYPE_NETWORK ||
+          (src->protocol != VIR_STORAGE_NET_PROTOCOL_HTTPS &&
+-          src->protocol != VIR_STORAGE_NET_PROTOCOL_HTTP))) {
++          src->protocol != VIR_STORAGE_NET_PROTOCOL_HTTP &&
++          src->protocol != VIR_STORAGE_NET_PROTOCOL_VITASTOR))) {
+         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                        _("query is supported only with HTTP(S) protocols"));
+         return -1;
+@@ -10129,6 +10130,7 @@ qemuDomainPrepareStorageSourceTLS(virStorageSource *src,
+         break;
+ 
+     case VIR_STORAGE_NET_PROTOCOL_RBD:
++    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+     case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+     case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
+     case VIR_STORAGE_NET_PROTOCOL_ISCSI:
+diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c
+index b841680..a6be771 100644
+--- a/src/qemu/qemu_snapshot.c
++++ b/src/qemu/qemu_snapshot.c
+@@ -373,6 +373,7 @@ qemuSnapshotPrepareDiskExternalInactive(virDomainSnapshotDiskDef *snapdisk,
+         case VIR_STORAGE_NET_PROTOCOL_NONE:
+         case VIR_STORAGE_NET_PROTOCOL_NBD:
+         case VIR_STORAGE_NET_PROTOCOL_RBD:
++        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
+         case VIR_STORAGE_NET_PROTOCOL_ISCSI:
+@@ -578,6 +579,7 @@ qemuSnapshotPrepareDiskInternal(virDomainDiskDef *disk,
+         case VIR_STORAGE_NET_PROTOCOL_NONE:
+         case VIR_STORAGE_NET_PROTOCOL_NBD:
+         case VIR_STORAGE_NET_PROTOCOL_RBD:
++        case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
+         case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+         case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
+         case VIR_STORAGE_NET_PROTOCOL_ISCSI:
+diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
+index d90c1c9..e853457 100644
+--- a/src/storage/storage_driver.c
++++ b/src/storage/storage_driver.c
+@@ -1627,6 +1627,7 @@ storageVolLookupByPathCallback(virStoragePoolObj *obj,
+ 
+         case VIR_STORAGE_POOL_GLUSTER:
+         case VIR_STORAGE_POOL_RBD:
++        case VIR_STORAGE_POOL_VITASTOR:
+         case VIR_STORAGE_POOL_SHEEPDOG:
+         case VIR_STORAGE_POOL_ZFS:
+         case VIR_STORAGE_POOL_LAST:
+diff --git a/src/storage_file/storage_source_backingstore.c b/src/storage_file/storage_source_backingstore.c
+index e48ae72..2017ccc 100644
+--- a/src/storage_file/storage_source_backingstore.c
++++ b/src/storage_file/storage_source_backingstore.c
+@@ -284,6 +284,75 @@ virStorageSourceParseRBDColonString(const char *rbdstr,
+ }
+ 
+ 
++static int
++virStorageSourceParseVitastorColonString(const char *colonstr,
++                                         virStorageSource *src)
++{
++    char *p, *e, *next;
++    g_autofree char *options = NULL;
++
++    /* optionally skip the "vitastor:" prefix if provided */
++    if (STRPREFIX(colonstr, "vitastor:"))
++        colonstr += strlen("vitastor:");
++
++    options = g_strdup(colonstr);
++
++    p = options;
++    while (*p) {
++        /* find : delimiter or end of string */
++        for (e = p; *e && *e != ':'; ++e) {
++            if (*e == '\\') {
++                e++;
++                if (*e == '\0')
++                    break;
++            }
++        }
++        if (*e == '\0') {
++            next = e;    /* last kv pair */
++        } else {
++            next = e + 1;
++            *e = '\0';
++        }
++
++        if (STRPREFIX(p, "image=")) {
++            src->path = g_strdup(p + strlen("image="));
++        } else if (STRPREFIX(p, "etcd-prefix=")) {
++            src->query = g_strdup(p + strlen("etcd-prefix="));
++        } else if (STRPREFIX(p, "config-path=")) {
++            src->configFile = g_strdup(p + strlen("config-path="));
++        } else if (STRPREFIX(p, "etcd-host=")) {
++            char *h, *sep;
++
++            h = p + strlen("etcd-host=");
++            while (h < e) {
++                for (sep = h; sep < e; ++sep) {
++                    if (*sep == '\\' && (sep[1] == ',' ||
++                                         sep[1] == ';' ||
++                                         sep[1] == ' ')) {
++                        *sep = '\0';
++                        sep += 2;
++                        break;
++                    }
++                }
++
++                if (virStorageSourceRBDAddHost(src, h) < 0)
++                    return -1;
++
++                h = sep;
++            }
++        }
++
++        p = next;
++    }
++
++    if (!src->path) {
++        return -1;
++    }
++
++    return 0;
++}
++
++
+ static int
+ virStorageSourceParseNBDColonString(const char *nbdstr,
+                                     virStorageSource *src)
+@@ -396,6 +465,11 @@ virStorageSourceParseBackingColon(virStorageSource *src,
+             return -1;
+         break;
+ 
++    case VIR_STORAGE_NET_PROTOCOL_VITASTOR:
++        if (virStorageSourceParseVitastorColonString(path, src) < 0)
++            return -1;
++        break;
++
+     case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
+     case VIR_STORAGE_NET_PROTOCOL_LAST:
+     case VIR_STORAGE_NET_PROTOCOL_NONE:
+@@ -984,6 +1058,54 @@ virStorageSourceParseBackingJSONRBD(virStorageSource *src,
+     return 0;
+ }
+ 
++static int
++virStorageSourceParseBackingJSONVitastor(virStorageSource *src,
++                                         virJSONValue *json,
++                                         const char *jsonstr G_GNUC_UNUSED,
++                                         int opaque G_GNUC_UNUSED)
++{
++    const char *filename;
++    const char *image = virJSONValueObjectGetString(json, "image");
++    const char *conf = virJSONValueObjectGetString(json, "config-path");
++    const char *etcd_prefix = virJSONValueObjectGetString(json, "etcd-prefix");
++    virJSONValue *servers = virJSONValueObjectGetArray(json, "server");
++    size_t nservers;
++    size_t i;
++
++    src->type = VIR_STORAGE_TYPE_NETWORK;
++    src->protocol = VIR_STORAGE_NET_PROTOCOL_VITASTOR;
++
++    /* legacy syntax passed via 'filename' option */
++    if ((filename = virJSONValueObjectGetString(json, "filename")))
++        return virStorageSourceParseVitastorColonString(filename, src);
++
++    if (!image) {
++        virReportError(VIR_ERR_INVALID_ARG, "%s",
++                       _("missing image name in Vitastor backing volume "
++                         "JSON specification"));
++        return -1;
++    }
++
++    src->path = g_strdup(image);
++    src->configFile = g_strdup(conf);
++    src->query = g_strdup(etcd_prefix);
++
++    if (servers) {
++        nservers = virJSONValueArraySize(servers);
++
++        src->hosts = g_new0(virStorageNetHostDef, nservers);
++        src->nhosts = nservers;
++
++        for (i = 0; i < nservers; i++) {
++            if (virStorageSourceParseBackingJSONInetSocketAddress(src->hosts + i,
++                                                                  virJSONValueArrayGet(servers, i)) < 0)
++                return -1;
++        }
++    }
++
++    return 0;
++}
++
+ static int
+ virStorageSourceParseBackingJSONRaw(virStorageSource *src,
+                                     virJSONValue *json,
+@@ -1162,6 +1284,7 @@ static const struct virStorageSourceJSONDriverParser jsonParsers[] = {
+     {"sheepdog", false, virStorageSourceParseBackingJSONSheepdog, 0},
+     {"ssh", false, virStorageSourceParseBackingJSONSSH, 0},
+     {"rbd", false, virStorageSourceParseBackingJSONRBD, 0},
++    {"vitastor", false, virStorageSourceParseBackingJSONVitastor, 0},
+     {"raw", true, virStorageSourceParseBackingJSONRaw, 0},
+     {"nfs", false, virStorageSourceParseBackingJSONNFS, 0},
+     {"vxhs", false, virStorageSourceParseBackingJSONVxHS, 0},
+diff --git a/src/test/test_driver.c b/src/test/test_driver.c
+index bd6f063..cce34e1 100644
+--- a/src/test/test_driver.c
++++ b/src/test/test_driver.c
+@@ -7338,6 +7338,7 @@ testStorageVolumeTypeForPool(int pooltype)
+     case VIR_STORAGE_POOL_ISCSI_DIRECT:
+     case VIR_STORAGE_POOL_GLUSTER:
+     case VIR_STORAGE_POOL_RBD:
++    case VIR_STORAGE_POOL_VITASTOR:
+         return VIR_STORAGE_VOL_NETWORK;
+     case VIR_STORAGE_POOL_LOGICAL:
+     case VIR_STORAGE_POOL_DISK:
+diff --git a/tests/storagepoolcapsschemadata/poolcaps-fs.xml b/tests/storagepoolcapsschemadata/poolcaps-fs.xml
+index eee75af..8bd0a57 100644
+--- a/tests/storagepoolcapsschemadata/poolcaps-fs.xml
++++ b/tests/storagepoolcapsschemadata/poolcaps-fs.xml
+@@ -204,4 +204,11 @@
+       </enum>
+     </volOptions>
+   </pool>
++  <pool type='vitastor' supported='no'>
++    <volOptions>
++      <defaultFormat type='raw'/>
++      <enum name='targetFormatType'>
++      </enum>
++    </volOptions>
++  </pool>
+ </storagepoolCapabilities>
+diff --git a/tests/storagepoolcapsschemadata/poolcaps-full.xml b/tests/storagepoolcapsschemadata/poolcaps-full.xml
+index 805950a..852df0d 100644
+--- a/tests/storagepoolcapsschemadata/poolcaps-full.xml
++++ b/tests/storagepoolcapsschemadata/poolcaps-full.xml
+@@ -204,4 +204,11 @@
+       </enum>
+     </volOptions>
+   </pool>
++  <pool type='vitastor' supported='yes'>
++    <volOptions>
++      <defaultFormat type='raw'/>
++      <enum name='targetFormatType'>
++      </enum>
++    </volOptions>
++  </pool>
+ </storagepoolCapabilities>
+diff --git a/tests/storagepoolxml2argvtest.c b/tests/storagepoolxml2argvtest.c
+index e8e40d6..db55fe5 100644
+--- a/tests/storagepoolxml2argvtest.c
++++ b/tests/storagepoolxml2argvtest.c
+@@ -65,6 +65,7 @@ testCompareXMLToArgvFiles(bool shouldFail,
+     case VIR_STORAGE_POOL_GLUSTER:
+     case VIR_STORAGE_POOL_ZFS:
+     case VIR_STORAGE_POOL_VSTORAGE:
++    case VIR_STORAGE_POOL_VITASTOR:
+     case VIR_STORAGE_POOL_LAST:
+     default:
+         VIR_TEST_DEBUG("pool type '%s' has no xml2argv test", defTypeStr);
+diff --git a/tools/virsh-pool.c b/tools/virsh-pool.c
+index 8a98c6a..4b1bbd4 100644
+--- a/tools/virsh-pool.c
++++ b/tools/virsh-pool.c
+@@ -1221,6 +1221,9 @@ cmdPoolList(vshControl *ctl, const vshCmd *cmd G_GNUC_UNUSED)
+             case VIR_STORAGE_POOL_VSTORAGE:
+                 flags |= VIR_CONNECT_LIST_STORAGE_POOLS_VSTORAGE;
+                 break;
++            case VIR_STORAGE_POOL_VITASTOR:
++                flags |= VIR_CONNECT_LIST_STORAGE_POOLS_VITASTOR;
++                break;
+             case VIR_STORAGE_POOL_LAST:
+                 break;
+             }

patches/pve-qemu-8.0-vitastor.patch

@@ -0,0 +1,190 @@
+diff --git a/block/meson.build b/block/meson.build
+index 382bec0e7d..af6207dbce 100644
+--- a/block/meson.build
++++ b/block/meson.build
+@@ -114,6 +114,7 @@ foreach m : [
+   [libnfs, 'nfs', files('nfs.c')],
+   [libssh, 'ssh', files('ssh.c')],
+   [rbd, 'rbd', files('rbd.c')],
++  [vitastor, 'vitastor', files('vitastor.c')],
+ ]
+   if m[0].found()
+     module_ss = ss.source_set()
+diff --git a/meson.build b/meson.build
+index c44d05a13f..ebedb42843 100644
+--- a/meson.build
++++ b/meson.build
+@@ -1028,6 +1028,26 @@ if not get_option('rbd').auto() or have_block
+   endif
+ endif
+ 
++vitastor = not_found
++if not get_option('vitastor').auto() or have_block
++  libvitastor_client = cc.find_library('vitastor_client', has_headers: ['vitastor_c.h'],
++    required: get_option('vitastor'), kwargs: static_kwargs)
++  if libvitastor_client.found()
++    if cc.links('''
++      #include <vitastor_c.h>
++      int main(void) {
++        vitastor_c_create_qemu(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
++        return 0;
++      }''', dependencies: libvitastor_client)
++      vitastor = declare_dependency(dependencies: libvitastor_client)
++    elif get_option('vitastor').enabled()
++      error('could not link libvitastor_client')
++    else
++      warning('could not link libvitastor_client, disabling')
++    endif
++  endif
++endif
++
+ glusterfs = not_found
+ glusterfs_ftruncate_has_stat = false
+ glusterfs_iocb_has_stat = false
+@@ -1882,6 +1902,7 @@ endif
+ config_host_data.set('CONFIG_OPENGL', opengl.found())
+ config_host_data.set('CONFIG_PROFILER', get_option('profiler'))
+ config_host_data.set('CONFIG_RBD', rbd.found())
++config_host_data.set('CONFIG_VITASTOR', vitastor.found())
+ config_host_data.set('CONFIG_RDMA', rdma.found())
+ config_host_data.set('CONFIG_SDL', sdl.found())
+ config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
+@@ -4020,6 +4041,7 @@ if spice_protocol.found()
+   summary_info += {'  spice server support': spice}
+ endif
+ summary_info += {'rbd support':       rbd}
++summary_info += {'vitastor support':  vitastor}
+ summary_info += {'smartcard support': cacard}
+ summary_info += {'U2F support':       u2f}
+ summary_info += {'libusb':            libusb}
+diff --git a/meson_options.txt b/meson_options.txt
+index fc9447d267..c4ac55c283 100644
+--- a/meson_options.txt
++++ b/meson_options.txt
+@@ -173,6 +173,8 @@ option('lzo', type : 'feature', value : 'auto',
+        description: 'lzo compression support')
+ option('rbd', type : 'feature', value : 'auto',
+        description: 'Ceph block device driver')
++option('vitastor', type : 'feature', value : 'auto',
++       description: 'Vitastor block device driver')
+ option('opengl', type : 'feature', value : 'auto',
+        description: 'OpenGL support')
+ option('rdma', type : 'feature', value : 'auto',
+diff --git a/qapi/block-core.json b/qapi/block-core.json
+index c05ad0c07e..f5eb701604 100644
+--- a/qapi/block-core.json
++++ b/qapi/block-core.json
+@@ -3308,7 +3308,7 @@
+             'raw', 'rbd',
+             { 'name': 'replication', 'if': 'CONFIG_REPLICATION' },
+             'pbs',
+-            'ssh', 'throttle', 'vdi', 'vhdx',
++            'ssh', 'throttle', 'vdi', 'vhdx', 'vitastor',
+             { 'name': 'virtio-blk-vfio-pci', 'if': 'CONFIG_BLKIO' },
+             { 'name': 'virtio-blk-vhost-user', 'if': 'CONFIG_BLKIO' },
+             { 'name': 'virtio-blk-vhost-vdpa', 'if': 'CONFIG_BLKIO' },
+@@ -4338,6 +4338,28 @@
+             '*key-secret': 'str',
+             '*server': ['InetSocketAddressBase'] } }
+ 
++##
++# @BlockdevOptionsVitastor:
++#
++# Driver specific block device options for vitastor
++#
++# @image:       Image name
++# @inode:       Inode number
++# @pool:        Pool ID
++# @size:        Desired image size in bytes
++# @config-path: Path to Vitastor configuration
++# @etcd-host:   etcd connection address(es)
++# @etcd-prefix: etcd key/value prefix
++##
++{ 'struct': 'BlockdevOptionsVitastor',
++  'data': { '*inode': 'uint64',
++            '*pool': 'uint64',
++            '*size': 'uint64',
++            '*image': 'str',
++            '*config-path': 'str',
++            '*etcd-host': 'str',
++            '*etcd-prefix': 'str' } }
++
+ ##
+ # @ReplicationMode:
+ #
+@@ -4787,6 +4809,7 @@
+       'throttle':   'BlockdevOptionsThrottle',
+       'vdi':        'BlockdevOptionsGenericFormat',
+       'vhdx':       'BlockdevOptionsGenericFormat',
++      'vitastor':   'BlockdevOptionsVitastor',
+       'virtio-blk-vfio-pci':
+                     { 'type': 'BlockdevOptionsVirtioBlkVfioPci',
+                       'if': 'CONFIG_BLKIO' },
+@@ -5187,6 +5210,17 @@
+             '*cluster-size' :   'size',
+             '*encrypt' :        'RbdEncryptionCreateOptions' } }
+ 
++##
++# @BlockdevCreateOptionsVitastor:
++#
++# Driver specific image creation options for Vitastor.
++#
++# @size: Size of the virtual disk in bytes
++##
++{ 'struct': 'BlockdevCreateOptionsVitastor',
++  'data': { 'location':         'BlockdevOptionsVitastor',
++            'size':             'size' } }
++
+ ##
+ # @BlockdevVmdkSubformat:
+ #
+@@ -5385,6 +5419,7 @@
+       'ssh':            'BlockdevCreateOptionsSsh',
+       'vdi':            'BlockdevCreateOptionsVdi',
+       'vhdx':           'BlockdevCreateOptionsVhdx',
++      'vitastor':       'BlockdevCreateOptionsVitastor',
+       'vmdk':           'BlockdevCreateOptionsVmdk',
+       'vpc':            'BlockdevCreateOptionsVpc'
+   } }
+diff --git a/scripts/ci/org.centos/stream/8/x86_64/configure b/scripts/ci/org.centos/stream/8/x86_64/configure
+index 6e8983f39c..1b0b9fcf3e 100755
+--- a/scripts/ci/org.centos/stream/8/x86_64/configure
++++ b/scripts/ci/org.centos/stream/8/x86_64/configure
+@@ -32,7 +32,7 @@
+ --with-git=meson \
+ --with-git-submodules=update \
+ --target-list="x86_64-softmmu" \
+---block-drv-rw-whitelist="qcow2,raw,file,host_device,nbd,iscsi,rbd,blkdebug,luks,null-co,nvme,copy-on-read,throttle,gluster" \
++--block-drv-rw-whitelist="qcow2,raw,file,host_device,nbd,iscsi,rbd,vitastor,blkdebug,luks,null-co,nvme,copy-on-read,throttle,gluster" \
+ --audio-drv-list="" \
+ --block-drv-ro-whitelist="vmdk,vhdx,vpc,https,ssh" \
+ --with-coroutine=ucontext \
+@@ -179,6 +179,7 @@
+ --enable-opengl \
+ --enable-pie \
+ --enable-rbd \
++--enable-vitastor \
+ --enable-rdma \
+ --enable-seccomp \
+ --enable-snappy \
+diff --git a/scripts/meson-buildoptions.sh b/scripts/meson-buildoptions.sh
+index 009fab1515..95914e6ebc 100644
+--- a/scripts/meson-buildoptions.sh
++++ b/scripts/meson-buildoptions.sh
+@@ -144,6 +144,7 @@ meson_options_help() {
+   printf "%s\n" '  qed             qed image format support'
+   printf "%s\n" '  qga-vss         build QGA VSS support (broken with MinGW)'
+   printf "%s\n" '  rbd             Ceph block device driver'
++  printf "%s\n" '  vitastor        Vitastor block device driver'
+   printf "%s\n" '  rdma            Enable RDMA-based migration'
+   printf "%s\n" '  replication     replication support'
+   printf "%s\n" '  sdl             SDL user interface'
+@@ -392,6 +393,8 @@ _meson_option_parse() {
+     --disable-qom-cast-debug) printf "%s" -Dqom_cast_debug=false ;;
+     --enable-rbd) printf "%s" -Drbd=enabled ;;
+     --disable-rbd) printf "%s" -Drbd=disabled ;;
++    --enable-vitastor) printf "%s" -Dvitastor=enabled ;;
++    --disable-vitastor) printf "%s" -Dvitastor=disabled ;;
+     --enable-rdma) printf "%s" -Drdma=enabled ;;
+     --disable-rdma) printf "%s" -Drdma=disabled ;;
+     --enable-replication) printf "%s" -Dreplication=enabled ;;

rpm/build-tarball.sh

@@ -24,4 +24,4 @@ rm fio
 mv fio-copy fio
 FIO=`rpm -qi fio | perl -e 'while(<>) { /^Epoch[\s:]+(\S+)/ && print "$1:"; /^Version[\s:]+(\S+)/ && print $1; /^Release[\s:]+(\S+)/ && print "-$1"; }'`
 perl -i -pe 's/(Requires:\s*fio)([^\n]+)?/$1 = '$FIO'/' $VITASTOR/rpm/vitastor-el$EL.spec
-tar --transform 's#^#vitastor-0.8.8/#' --exclude 'rpm/*.rpm' -czf $VITASTOR/../vitastor-0.8.8$(rpm --eval '%dist').tar.gz *
+tar --transform 's#^#vitastor-0.9.3/#' --exclude 'rpm/*.rpm' -czf $VITASTOR/../vitastor-0.9.3$(rpm --eval '%dist').tar.gz *

rpm/vitastor-el7.Dockerfile

@@ -35,7 +35,7 @@ ADD . /root/vitastor
 RUN set -e; \
     cd /root/vitastor/rpm; \
     sh build-tarball.sh; \
-    cp /root/vitastor-0.8.8.el7.tar.gz ~/rpmbuild/SOURCES; \
+    cp /root/vitastor-0.9.3.el7.tar.gz ~/rpmbuild/SOURCES; \
     cp vitastor-el7.spec ~/rpmbuild/SPECS/vitastor.spec; \
     cd ~/rpmbuild/SPECS/; \
     rpmbuild -ba vitastor.spec; \

rpm/vitastor-el7.spec

@@ -1,11 +1,11 @@
 Name:           vitastor
-Version:        0.8.8
+Version:        0.9.3
 Release:        1%{?dist}
 Summary:        Vitastor, a fast software-defined clustered block storage
 
 License:        Vitastor Network Public License 1.1
 URL:            https://vitastor.io/
-Source0:        vitastor-0.8.8.el7.tar.gz
+Source0:        vitastor-0.9.3.el7.tar.gz
 
 BuildRequires:  liburing-devel >= 0.6
 BuildRequires:  gperftools-devel

rpm/vitastor-el8.Dockerfile

@@ -35,7 +35,7 @@ ADD . /root/vitastor
 RUN set -e; \
     cd /root/vitastor/rpm; \
     sh build-tarball.sh; \
-    cp /root/vitastor-0.8.8.el8.tar.gz ~/rpmbuild/SOURCES; \
+    cp /root/vitastor-0.9.3.el8.tar.gz ~/rpmbuild/SOURCES; \
     cp vitastor-el8.spec ~/rpmbuild/SPECS/vitastor.spec; \
     cd ~/rpmbuild/SPECS/; \
     rpmbuild -ba vitastor.spec; \

rpm/vitastor-el8.spec

@@ -1,11 +1,11 @@
 Name:           vitastor
-Version:        0.8.8
+Version:        0.9.3
 Release:        1%{?dist}
 Summary:        Vitastor, a fast software-defined clustered block storage
 
 License:        Vitastor Network Public License 1.1
 URL:            https://vitastor.io/
-Source0:        vitastor-0.8.8.el8.tar.gz
+Source0:        vitastor-0.9.3.el8.tar.gz
 
 BuildRequires:  liburing-devel >= 0.6
 BuildRequires:  gperftools-devel

rpm/vitastor-el9.Dockerfile

@@ -18,7 +18,7 @@ ADD . /root/vitastor
 RUN set -e; \
     cd /root/vitastor/rpm; \
     sh build-tarball.sh; \
-    cp /root/vitastor-0.8.8.el9.tar.gz ~/rpmbuild/SOURCES; \
+    cp /root/vitastor-0.9.3.el9.tar.gz ~/rpmbuild/SOURCES; \
     cp vitastor-el9.spec ~/rpmbuild/SPECS/vitastor.spec; \
     cd ~/rpmbuild/SPECS/; \
     rpmbuild -ba vitastor.spec; \

rpm/vitastor-el9.spec

@@ -1,11 +1,11 @@
 Name:           vitastor
-Version:        0.8.8
+Version:        0.9.3
 Release:        1%{?dist}
 Summary:        Vitastor, a fast software-defined clustered block storage
 
 License:        Vitastor Network Public License 1.1
 URL:            https://vitastor.io/
-Source0:        vitastor-0.8.8.el9.tar.gz
+Source0:        vitastor-0.9.3.el9.tar.gz
 
 BuildRequires:  liburing-devel >= 0.6
 BuildRequires:  gperftools-devel
@@ -73,7 +73,7 @@ Vitastor library headers for development.
 Summary:        Vitastor - fio drivers
 Group:          Development/Libraries
 Requires:       vitastor-client = %{version}-%{release}
-Requires:       fio = 3.27-7.el9
+Requires:       fio = 3.27-8.el9
 
 
 %description -n vitastor-fio

src/CMakeLists.txt

@@ -16,7 +16,7 @@ if("${CMAKE_INSTALL_PREFIX}" MATCHES "^/usr/local/?$")
 	set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
 endif()
 
-add_definitions(-DVERSION="0.8.8")
+add_definitions(-DVERSION="0.9.3")
 add_definitions(-Wall -Wno-sign-compare -Wno-comment -Wno-parentheses -Wno-pointer-arith -fdiagnostics-color=always -I ${CMAKE_SOURCE_DIR}/src)
 if (${WITH_ASAN})
 	add_definitions(-fsanitize=address -fno-omit-frame-pointer)
@@ -111,7 +111,7 @@ target_compile_options(vitastor_common PUBLIC -fPIC)
 add_executable(vitastor-osd
 	osd_main.cpp osd.cpp osd_secondary.cpp osd_peering.cpp osd_flush.cpp osd_peering_pg.cpp
 	osd_primary.cpp osd_primary_chain.cpp osd_primary_sync.cpp osd_primary_write.cpp osd_primary_subops.cpp
-	osd_cluster.cpp osd_rmw.cpp
+	osd_cluster.cpp osd_rmw.cpp osd_scrub.cpp osd_primary_describe.cpp
 )
 target_link_libraries(vitastor-osd
 	vitastor_common
@@ -141,6 +141,8 @@ add_library(vitastor_client SHARED
 	cli_common.cpp
 	cli_alloc_osd.cpp
 	cli_status.cpp
+	cli_describe.cpp
+	cli_fix.cpp
 	cli_df.cpp
 	cli_ls.cpp
 	cli_create.cpp
@@ -299,7 +301,7 @@ add_executable(test_cluster_client
 	EXCLUDE_FROM_ALL
 	test_cluster_client.cpp
 	pg_states.cpp osd_ops.cpp cluster_client.cpp cluster_client_list.cpp msgr_op.cpp mock/messenger.cpp msgr_stop.cpp
-	etcd_state_client.cpp timerfd_manager.cpp ../json11/json11.cpp
+	etcd_state_client.cpp timerfd_manager.cpp str_util.cpp ../json11/json11.cpp
 )
 target_compile_definitions(test_cluster_client PUBLIC -D__MOCK__)
 target_include_directories(test_cluster_client PUBLIC ${CMAKE_SOURCE_DIR}/src/mock)

src/blockstore.h

@@ -73,7 +73,10 @@ Input:
   write request is copied into the metadata area bitwise and stored there.
 
 Output:
-- retval = number of bytes actually read/written or negative error number (-EINVAL or -ENOSPC)
+- retval = number of bytes actually read/written or negative error number
+  -EINVAL = invalid input parameters
+  -ENOENT = requested object/version does not exist for reads
+  -ENOSPC = no space left in the store for writes
 - version = the version actually read or written
 
 ## BS_OP_DELETE
@@ -122,11 +125,14 @@ Output:
 Get a list of all objects in this Blockstore.
 
 Input:
-- oid.stripe = PG alignment
-- len = PG count or 0 to list all objects
-- offset = PG number
-- oid.inode = min inode number or 0 to list all inodes
-- version = max inode number or 0 to list all inodes
+- pg_alignment = PG alignment
+- pg_count = PG count or 0 to list all objects
+- pg_number = PG number
+- list_stable_limit = max number of clean objects in the reply
+  it's guaranteed that dirty objects are returned from the same interval,
+  i.e. from (min_oid .. min(max_oid, max(returned stable OIDs)))
+- min_oid = min inode/stripe or 0 to list all objects
+- max_oid = max inode/stripe or 0 to list all objects
 
 Output:
 - retval = total obj_ver_id count
@@ -143,10 +149,27 @@ struct blockstore_op_t
     uint64_t opcode;
     // finish callback
     std::function<void (blockstore_op_t*)> callback;
-    object_id oid;
-    uint64_t version;
-    uint32_t offset;
-    uint32_t len;
+    union __attribute__((__packed__))
+    {
+        // R/W
+        struct __attribute__((__packed__))
+        {
+            object_id oid;
+            uint64_t version;
+            uint32_t offset;
+            uint32_t len;
+        };
+        // List
+        struct __attribute__((__packed__))
+        {
+            object_id min_oid;
+            object_id max_oid;
+            uint32_t pg_alignment;
+            uint32_t pg_count;
+            uint32_t pg_number;
+            uint32_t list_stable_limit;
+        };
+    };
     void *buf;
     void *bitmap;
     int retval;

src/blockstore_flush.cpp

@@ -536,14 +536,27 @@ resume_1:
                 return false;
             }
             // zero out old metadata entry
+            {
+                clean_disk_entry *old_entry = (clean_disk_entry*)((uint8_t*)meta_old.buf + meta_old.pos*bs->dsk.clean_entry_size);
+                if (old_entry->oid.inode != 0 && old_entry->oid != cur.oid)
+                {
+                    printf("Fatal error (metadata corruption or bug): tried to wipe metadata entry %lu (%lx:%lx v%lu) as old location of %lx:%lx\n",
+                        old_clean_loc >> bs->dsk.block_order, old_entry->oid.inode, old_entry->oid.stripe,
+                        old_entry->version, cur.oid.inode, cur.oid.stripe);
+                    exit(1);
+                }
+            }
             memset((uint8_t*)meta_old.buf + meta_old.pos*bs->dsk.clean_entry_size, 0, bs->dsk.clean_entry_size);
-            await_sqe(15);
-            data->iov = (struct iovec){ meta_old.buf, bs->dsk.meta_block_size };
-            data->callback = simple_callback_w;
-            my_uring_prep_writev(
-                sqe, bs->dsk.meta_fd, &data->iov, 1, bs->dsk.meta_offset + bs->dsk.meta_block_size + meta_old.sector
-            );
-            wait_count++;
+            if (meta_old.sector != meta_new.sector)
+            {
+                await_sqe(15);
+                data->iov = (struct iovec){ meta_old.buf, bs->dsk.meta_block_size };
+                data->callback = simple_callback_w;
+                my_uring_prep_writev(
+                    sqe, bs->dsk.meta_fd, &data->iov, 1, bs->dsk.meta_offset + bs->dsk.meta_block_size + meta_old.sector
+                );
+                wait_count++;
+            }
         }
         if (has_delete)
         {
@@ -662,53 +675,58 @@ resume_1:
                     return false;
                 }
                 flusher->trimming = true;
-                // First update journal "superblock" and only then update <used_start> in memory
-                await_sqe(12);
-                *((journal_entry_start*)flusher->journal_superblock) = {
-                    .crc32 = 0,
-                    .magic = JOURNAL_MAGIC,
-                    .type = JE_START,
-                    .size = sizeof(journal_entry_start),
-                    .reserved = 0,
-                    .journal_start = new_trim_pos,
-                    .version = JOURNAL_VERSION,
-                };
-                ((journal_entry_start*)flusher->journal_superblock)->crc32 = je_crc32((journal_entry*)flusher->journal_superblock);
-                data->iov = (struct iovec){ flusher->journal_superblock, bs->dsk.journal_block_size };
-                data->callback = simple_callback_w;
-                my_uring_prep_writev(sqe, bs->dsk.journal_fd, &data->iov, 1, bs->journal.offset);
-                wait_count++;
-            resume_13:
-                if (wait_count > 0)
+                // Recheck the position with the "lock" taken
+                new_trim_pos = bs->journal.get_trim_pos();
+                if (new_trim_pos != bs->journal.used_start)
                 {
-                    wait_state = 13;
-                    return false;
-                }
-                if (!bs->disable_journal_fsync)
-                {
-                    await_sqe(20);
-                    my_uring_prep_fsync(sqe, bs->dsk.journal_fd, IORING_FSYNC_DATASYNC);
-                    data->iov = { 0 };
+                    // First update journal "superblock" and only then update <used_start> in memory
+                    await_sqe(12);
+                    *((journal_entry_start*)flusher->journal_superblock) = {
+                        .crc32 = 0,
+                        .magic = JOURNAL_MAGIC,
+                        .type = JE_START,
+                        .size = sizeof(journal_entry_start),
+                        .reserved = 0,
+                        .journal_start = new_trim_pos,
+                        .version = JOURNAL_VERSION,
+                    };
+                    ((journal_entry_start*)flusher->journal_superblock)->crc32 = je_crc32((journal_entry*)flusher->journal_superblock);
+                    data->iov = (struct iovec){ flusher->journal_superblock, bs->dsk.journal_block_size };
                     data->callback = simple_callback_w;
-                resume_21:
+                    my_uring_prep_writev(sqe, bs->dsk.journal_fd, &data->iov, 1, bs->journal.offset);
+                    wait_count++;
+                resume_13:
                     if (wait_count > 0)
                     {
-                        wait_state = 21;
+                        wait_state = 13;
                         return false;
                     }
-                }
-                bs->journal.used_start = new_trim_pos;
+                    if (!bs->disable_journal_fsync)
+                    {
+                        await_sqe(20);
+                        my_uring_prep_fsync(sqe, bs->dsk.journal_fd, IORING_FSYNC_DATASYNC);
+                        data->iov = { 0 };
+                        data->callback = simple_callback_w;
+                    resume_21:
+                        if (wait_count > 0)
+                        {
+                            wait_state = 21;
+                            return false;
+                        }
+                    }
+                    bs->journal.used_start = new_trim_pos;
 #ifdef BLOCKSTORE_DEBUG
-                printf("Journal trimmed to %08lx (next_free=%08lx)\n", bs->journal.used_start, bs->journal.next_free);
+                    printf("Journal trimmed to %08lx (next_free=%08lx)\n", bs->journal.used_start, bs->journal.next_free);
 #endif
+                    if (bs->journal.flush_journal && !flusher->flush_queue.size())
+                    {
+                        assert(bs->journal.used_start == bs->journal.next_free);
+                        printf("Journal flushed\n");
+                        exit(0);
+                    }
+                }
                 flusher->trimming = false;
             }
-            if (bs->journal.flush_journal && !flusher->flush_queue.size())
-            {
-                assert(bs->journal.used_start == bs->journal.next_free);
-                printf("Journal flushed\n");
-                exit(0);
-            }
         }
         // All done
         flusher->active_flushers--;

src/blockstore_impl.cpp

@@ -307,6 +307,18 @@ void blockstore_impl_t::check_wait(blockstore_op_t *op)
         }
         PRIV(op)->wait_for = 0;
     }
+    else if (PRIV(op)->wait_for == WAIT_FREE)
+    {
+        if (!data_alloc->get_free_count() && big_to_flush > 0)
+        {
+#ifdef BLOCKSTORE_DEBUG
+            printf("Still waiting for free space on the data device\n");
+#endif
+            return;
+        }
+        flusher->release_trim();
+        PRIV(op)->wait_for = 0;
+    }
     else
     {
         throw std::runtime_error("BUG: op->wait_for value is unexpected");
@@ -450,11 +462,11 @@ void blockstore_impl_t::reshard_clean_db(pool_id_t pool, uint32_t pg_count, uint
 
 void blockstore_impl_t::process_list(blockstore_op_t *op)
 {
-    uint32_t list_pg = op->offset+1;
-    uint32_t pg_count = op->len;
-    uint64_t pg_stripe_size = op->oid.stripe;
-    uint64_t min_inode = op->oid.inode;
-    uint64_t max_inode = op->version;
+    uint32_t list_pg = op->pg_number+1;
+    uint32_t pg_count = op->pg_count;
+    uint64_t pg_stripe_size = op->pg_alignment;
+    uint64_t min_inode = op->min_oid.inode;
+    uint64_t max_inode = op->max_oid.inode;
     // Check PG
     if (pg_count != 0 && (pg_stripe_size < MIN_DATA_BLOCK_SIZE || list_pg > pg_count))
     {
@@ -501,7 +513,13 @@ void blockstore_impl_t::process_list(blockstore_op_t *op)
             stable_alloc += clean_db.size();
         }
     }
-    else
+    if (op->list_stable_limit > 0)
+    {
+        stable_alloc = op->list_stable_limit;
+        if (stable_alloc > 1024*1024)
+            stable_alloc = 1024*1024;
+    }
+    if (stable_alloc < 32768)
     {
         stable_alloc = 32768;
     }
@@ -512,22 +530,22 @@ void blockstore_impl_t::process_list(blockstore_op_t *op)
         FINISH_OP(op);
         return;
     }
+    auto max_oid = op->max_oid;
+    bool limited = false;
+    pool_pg_id_t last_shard_id = 0;
     for (auto shard_it = clean_db_shards.lower_bound(first_shard);
         shard_it != clean_db_shards.end() && shard_it->first <= last_shard;
         shard_it++)
     {
         auto & clean_db = shard_it->second;
         auto clean_it = clean_db.begin(), clean_end = clean_db.end();
-        if ((min_inode != 0 || max_inode != 0) && min_inode <= max_inode)
+        if (op->min_oid.inode != 0 || op->min_oid.stripe != 0)
         {
-            clean_it = clean_db.lower_bound({
-                .inode = min_inode,
-                .stripe = 0,
-            });
-            clean_end = clean_db.upper_bound({
-                .inode = max_inode,
-                .stripe = UINT64_MAX,
-            });
+            clean_it = clean_db.lower_bound(op->min_oid);
+        }
+        if ((max_oid.inode != 0 || max_oid.stripe != 0) && !(max_oid < op->min_oid))
+        {
+            clean_end = clean_db.upper_bound(max_oid);
         }
         for (; clean_it != clean_end; clean_it++)
         {
@@ -546,11 +564,29 @@ void blockstore_impl_t::process_list(blockstore_op_t *op)
                 .oid = clean_it->first,
                 .version = clean_it->second.version,
             };
+            if (op->list_stable_limit > 0 && stable_count >= op->list_stable_limit)
+            {
+                if (!limited)
+                {
+                    limited = true;
+                    max_oid = stable[stable_count-1].oid;
+                }
+                break;
+            }
         }
+        if (op->list_stable_limit > 0)
+        {
+            // To maintain the order, we have to include objects in the same range from other shards
+            if (last_shard_id != 0 && last_shard_id != shard_it->first)
+                std::sort(stable, stable+stable_count);
+            if (stable_count > op->list_stable_limit)
+                stable_count = op->list_stable_limit;
+        }
+        last_shard_id = shard_it->first;
     }
-    if (first_shard != last_shard)
+    if (op->list_stable_limit == 0 && first_shard != last_shard)
     {
-        // If that's not a per-PG listing, sort clean entries
+        // If that's not a per-PG listing, sort clean entries (already sorted if list_stable_limit != 0)
         std::sort(stable, stable+stable_count);
     }
     int clean_stable_count = stable_count;
@@ -559,20 +595,17 @@ void blockstore_impl_t::process_list(blockstore_op_t *op)
     obj_ver_id *unstable = NULL;
     {
         auto dirty_it = dirty_db.begin(), dirty_end = dirty_db.end();
-        if ((min_inode != 0 || max_inode != 0) && min_inode <= max_inode)
+        if (op->min_oid.inode != 0 || op->min_oid.stripe != 0)
         {
             dirty_it = dirty_db.lower_bound({
-                .oid = {
-                    .inode = min_inode,
-                    .stripe = 0,
-                },
+                .oid = op->min_oid,
                 .version = 0,
             });
+        }
+        if ((max_oid.inode != 0 || max_oid.stripe != 0) && !(max_oid < op->min_oid))
+        {
             dirty_end = dirty_db.upper_bound({
-                .oid = {
-                    .inode = max_inode,
-                    .stripe = UINT64_MAX,
-                },
+                .oid = max_oid,
                 .version = UINT64_MAX,
             });
         }
@@ -616,6 +649,11 @@ void blockstore_impl_t::process_list(blockstore_op_t *op)
                             stable[stable_count++] = dirty_it->first;
                         }
                     }
+                    if (op->list_stable_limit > 0 && stable_count >= op->list_stable_limit)
+                    {
+                        // Stop here
+                        break;
+                    }
                 }
                 else
                 {

src/blockstore_impl.h

@@ -160,6 +160,8 @@ struct __attribute__((__packed__)) dirty_entry
 #define WAIT_JOURNAL 3
 // Suspend operation until the next journal sector buffer is free
 #define WAIT_JOURNAL_BUFFER 4
+// Suspend operation until there is some free space on the data device
+#define WAIT_FREE 5
 
 struct fulfill_read_t
 {
@@ -263,6 +265,7 @@ class blockstore_impl_t
 
     struct journal_t journal;
     journal_flusher_t *flusher;
+    int big_to_flush = 0;
     int write_iodepth = 0;
 
     bool live = false, queue_stall = false;

src/blockstore_journal.cpp

@@ -236,14 +236,6 @@ journal_t::~journal_t()
 uint64_t journal_t::get_trim_pos()
 {
     auto journal_used_it = used_sectors.lower_bound(used_start);
-#ifdef BLOCKSTORE_DEBUG
-    printf(
-        "Trimming journal (used_start=%08lx, next_free=%08lx, dirty_start=%08lx, new_start=%08lx, new_refcount=%ld)\n",
-        used_start, next_free, dirty_start,
-        journal_used_it == used_sectors.end() ? 0 : journal_used_it->first,
-        journal_used_it == used_sectors.end() ? 0 : journal_used_it->second
-    );
-#endif
     if (journal_used_it == used_sectors.end())
     {
         // Journal is cleared to its end, restart from the beginning
@@ -256,12 +248,26 @@ uint64_t journal_t::get_trim_pos()
         else
         {
             // next_free does not need updating during trim
+#ifdef BLOCKSTORE_DEBUG
+            printf(
+                "Trimming journal (used_start=%08lx, next_free=%08lx, dirty_start=%08lx, new_start=%08lx, new_refcount=%ld)\n",
+                used_start, next_free, dirty_start,
+                journal_used_it->first, journal_used_it->second
+            );
+#endif
             return journal_used_it->first;
         }
     }
     else if (journal_used_it->first > used_start)
     {
         // Journal is cleared up to <journal_used_it>
+#ifdef BLOCKSTORE_DEBUG
+        printf(
+            "Trimming journal (used_start=%08lx, next_free=%08lx, dirty_start=%08lx, new_start=%08lx, new_refcount=%ld)\n",
+            used_start, next_free, dirty_start,
+            journal_used_it->first, journal_used_it->second
+        );
+#endif
         return journal_used_it->first;
     }
     // Can't trim journal

src/blockstore_read.cpp

@@ -124,10 +124,8 @@ int blockstore_impl_t::dequeue_read(blockstore_op_t *read_op)
     bool dirty_found = (dirty_it != dirty_db.end() && dirty_it->first.oid == read_op->oid);
     if (!clean_found && !dirty_found)
     {
-        // region is not allocated - return zeroes
-        memset(read_op->buf, 0, read_op->len);
         read_op->version = 0;
-        read_op->retval = read_op->len;
+        read_op->retval = -ENOENT;
         FINISH_OP(read_op);
         return 2;
     }
@@ -140,14 +138,16 @@ int blockstore_impl_t::dequeue_read(blockstore_op_t *read_op)
         {
             dirty_entry& dirty = dirty_it->second;
             bool version_ok = !IS_IN_FLIGHT(dirty.state) && read_op->version >= dirty_it->first.version;
-            if (IS_SYNCED(dirty.state))
-            {
-                if (!version_ok && read_op->version != 0)
-                    read_op->version = dirty_it->first.version;
-                version_ok = true;
-            }
             if (version_ok)
             {
+                if (IS_DELETE(dirty.state))
+                {
+                    assert(!result_version);
+                    read_op->version = 0;
+                    read_op->retval = -ENOENT;
+                    FINISH_OP(read_op);
+                    return 2;
+                }
                 if (!result_version)
                 {
                     result_version = dirty_it->first.version;
@@ -234,12 +234,19 @@ int blockstore_impl_t::dequeue_read(blockstore_op_t *read_op)
             }
         }
     }
-    else if (fulfilled < read_op->len)
+    if (!result_version)
     {
-        // fill remaining parts with zeroes
-        assert(fulfill_read(read_op, fulfilled, 0, dsk.data_block_size, (BS_ST_DELETE | BS_ST_STABLE), 0, 0, 0));
+        // May happen if there are entries in dirty_db but all of them are !version_ok
+        read_op->version = 0;
+        read_op->retval = -ENOENT;
+        FINISH_OP(read_op);
+        return 2;
+    }
+    if (fulfilled < read_op->len)
+    {
+        assert(fulfill_read(read_op, fulfilled, 0, dsk.data_block_size, (BS_ST_DELETE | BS_ST_STABLE), 0, 0, 0));
+        assert(fulfilled == read_op->len);
     }
-    assert(fulfilled == read_op->len);
     read_op->version = result_version;
     if (!PRIV(read_op)->pending_ops)
     {

src/blockstore_rollback.cpp

@@ -179,7 +179,7 @@ void blockstore_impl_t::erase_dirty(blockstore_dirty_db_t::iterator dirty_start,
     {
         object_id oid = dirty_it->first.oid;
 #ifdef BLOCKSTORE_DEBUG
-        printf("Unblock writes-after-delete %lx:%lx v%lx\n", oid.inode, oid.stripe, dirty_it->first.version);
+        printf("Unblock writes-after-delete %lx:%lx v%lu\n", oid.inode, oid.stripe, dirty_it->first.version);
 #endif
         dirty_it = dirty_end;
         // Unblock operations blocked by delete flushing
@@ -201,6 +201,11 @@ void blockstore_impl_t::erase_dirty(blockstore_dirty_db_t::iterator dirty_start,
     }
     while (1)
     {
+        if ((IS_BIG_WRITE(dirty_it->second.state) || IS_DELETE(dirty_it->second.state)) &&
+            IS_STABLE(dirty_it->second.state))
+        {
+            big_to_flush--;
+        }
         if (IS_BIG_WRITE(dirty_it->second.state) && dirty_it->second.location != clean_loc &&
             dirty_it->second.location != UINT64_MAX)
         {

src/blockstore_stable.cpp

@@ -103,7 +103,7 @@ blockstore_op_t* blockstore_impl_t::selective_sync(blockstore_op_t *op)
     blockstore_op_t *sync_op = new blockstore_op_t;
     sync_op->opcode = BS_OP_SYNC;
     sync_op->buf = NULL;
-    sync_op->callback = [this](blockstore_op_t *sync_op)
+    sync_op->callback = [](blockstore_op_t *sync_op)
     {
         delete sync_op;
     };
@@ -244,7 +244,7 @@ int blockstore_impl_t::split_stab_op(blockstore_op_t *op, std::function<int(obj_
         // Make a wrapped callback
         int *split_op_counter = (int*)malloc_or_die(sizeof(int));
         *split_op_counter = (sync_op ? 1 : 0) + (split_stab_op ? 1 : 0) + (todo ? 1 : 0);
-        auto cb = [this, op, good_items = good_vers.items,
+        auto cb = [op, good_items = good_vers.items,
             bad_items = bad_vers.items, split_op_counter,
             orig_buf, real_cb = op->callback](blockstore_op_t *split_op)
         {
@@ -446,6 +446,7 @@ void blockstore_impl_t::mark_stable(const obj_ver_id & v, bool forget_dirty)
                     {
                         inode_space_stats[dirty_it->first.oid.inode] += dsk.data_block_size;
                     }
+                    big_to_flush++;
                 }
                 else if (IS_DELETE(dirty_it->second.state))
                 {
@@ -454,8 +455,19 @@ void blockstore_impl_t::mark_stable(const obj_ver_id & v, bool forget_dirty)
                         sp -= dsk.data_block_size;
                     else
                         inode_space_stats.erase(dirty_it->first.oid.inode);
+                    big_to_flush++;
                 }
             }
+            else if (IS_IN_FLIGHT(dirty_it->second.state))
+            {
+                // mark_stable should never be called for in-flight or submitted writes
+                printf(
+                    "BUG: Attempt to mark_stable object %lx:%lx v%lu state of which is %x\n",
+                    dirty_it->first.oid.inode, dirty_it->first.oid.stripe, dirty_it->first.version,
+                    dirty_it->second.state
+                );
+                exit(1);
+            }
             if (forget_dirty && (IS_BIG_WRITE(dirty_it->second.state) ||
                 IS_DELETE(dirty_it->second.state)))
             {

src/blockstore_write.cpp

@@ -6,7 +6,7 @@
 bool blockstore_impl_t::enqueue_write(blockstore_op_t *op)
 {
     // Check or assign version number
-    bool found = false, deleted = false, is_del = (op->opcode == BS_OP_DELETE);
+    bool found = false, deleted = false, unsynced = false, is_del = (op->opcode == BS_OP_DELETE);
     bool wait_big = false, wait_del = false;
     void *bmp = NULL;
     uint64_t version = 1;
@@ -26,6 +26,7 @@ bool blockstore_impl_t::enqueue_write(blockstore_op_t *op)
             found = true;
             version = dirty_it->first.version + 1;
             deleted = IS_DELETE(dirty_it->second.state);
+            unsynced = !IS_SYNCED(dirty_it->second.state);
             wait_del = ((dirty_it->second.state & BS_ST_WORKFLOW_MASK) == BS_ST_WAIT_DEL);
             wait_big = (dirty_it->second.state & BS_ST_TYPE_MASK) == BS_ST_BIG_WRITE
                 ? !IS_SYNCED(dirty_it->second.state)
@@ -81,10 +82,28 @@ bool blockstore_impl_t::enqueue_write(blockstore_op_t *op)
             wait_del = true;
             PRIV(op)->real_version = op->version;
             op->version = version;
-            flusher->unshift_flush((obj_ver_id){
-                .oid = op->oid,
-                .version = version-1,
-            }, true);
+            if (unsynced)
+            {
+                // Issue an additional sync so the delete reaches the journal
+                blockstore_op_t *sync_op = new blockstore_op_t;
+                sync_op->opcode = BS_OP_SYNC;
+                sync_op->callback = [this, op](blockstore_op_t *sync_op)
+                {
+                    flusher->unshift_flush((obj_ver_id){
+                        .oid = op->oid,
+                        .version = op->version-1,
+                    }, true);
+                    delete sync_op;
+                };
+                enqueue_op(sync_op);
+            }
+            else
+            {
+                flusher->unshift_flush((obj_ver_id){
+                    .oid = op->oid,
+                    .version = version-1,
+                }, true);
+            }
         }
         else
         {
@@ -271,6 +290,13 @@ int blockstore_impl_t::dequeue_write(blockstore_op_t *op)
         if (loc == UINT64_MAX)
         {
             // no space
+            if (big_to_flush > 0)
+            {
+                // hope that some space will be available after flush
+                flusher->request_trim();
+                PRIV(op)->wait_for = WAIT_FREE;
+                return 0;
+            }
             cancel_all_writes(op, dirty_it, -ENOSPC);
             return 2;
         }
@@ -383,7 +409,23 @@ int blockstore_impl_t::dequeue_write(blockstore_op_t *op)
         );
 #endif
         // Figure out where data will be
-        journal.next_free = (journal.next_free + op->len) <= journal.len ? journal.next_free : dsk.journal_block_size;
+        auto next_next_free = (journal.next_free + op->len) <= journal.len ? journal.next_free : dsk.journal_block_size;
+        if (op->len > 0)
+        {
+            auto journal_used_it = journal.used_sectors.lower_bound(next_next_free);
+            if (journal_used_it != journal.used_sectors.end() &&
+                journal_used_it->first < next_next_free + op->len)
+            {
+                printf(
+                    "BUG: Attempt to overwrite used offset (%lx, %lu refs) of the journal with the object %lx:%lx v%lu: data at %lx, len %x!"
+                    " Journal used_start=%08lx (%lu refs), next_free=%08lx, dirty_start=%08lx\n",
+                    journal_used_it->first, journal_used_it->second, op->oid.inode, op->oid.stripe, op->version, next_next_free, op->len,
+                    journal.used_start, journal.used_sectors[journal.used_start], journal.next_free, journal.dirty_start
+                );
+                exit(1);
+            }
+        }
+        journal.next_free = next_next_free;
         je->oid = op->oid;
         je->version = op->version;
         je->offset = op->offset;

src/cli.cpp

@@ -73,6 +73,37 @@ static const char* help_text =
     "  <to> must be a child of <from> and <target> may be one of the layers between\n"
     "  <from> and <to>, including <from> and <to>.\n"
     "\n"
+    "vitastor-cli describe [--osds <osds>] [--object-state <states>] [--pool <pool>] [--inode <ino>] [--min-inode <ino>] [--max-inode <ino>] [--min-offset <offset>] [--max-offset <offset>]\n"
+    "  Describe unclean object locations in the cluster.\n"
+    "  --osds <osds>\n"
+    "      Only list objects from primary OSD(s) <osds>.\n"
+    "  --object-state <states>\n"
+    "      Only list objects in given state(s). State(s) may include:\n"
+    "      degraded, misplaced, incomplete, corrupted, inconsistent.\n"
+    "  --pool <pool name or number>\n"
+    "      Only list objects in the given pool.\n"
+    "  --inode, --min-inode, --max-inode\n"
+    "      Restrict listing to specific inode numbers.\n"
+    "  --min-offset, --max-offset\n"
+    "      Restrict listing to specific offsets inside inodes.\n"
+    "\n"
+    "vitastor-cli fix [--objects <objects>] [--bad-osds <osds>] [--part <part>] [--check no]\n"
+    "  Fix inconsistent objects in the cluster by deleting some copies.\n"
+    "  --objects <objects>\n"
+    "      Objects to fix, either in plain text or JSON format. If not specified,\n"
+    "      object list will be read from STDIN in one of the same formats.\n"
+    "      Plain text format: 0x<inode>:0x<stripe> <any delimiter> 0x<inode>:0x<stripe> ...\n"
+    "      JSON format: [{\"inode\":\"0x...\",\"stripe\":\"0x...\"},...]\n"
+    "  --bad-osds <osds>\n"
+    "      Remove inconsistent copies/parts of objects from these OSDs, effectively\n"
+    "      marking them bad and allowing Vitastor to recover objects from other copies.\n"
+    "  --part <number>\n"
+    "      Only remove EC part <number> (from 0 to pg_size-1), required for extreme\n"
+    "      edge cases where one OSD has multiple parts of a EC object.\n"
+    "  --check no\n"
+    "      Do not recheck that requested objects are actually inconsistent,\n"
+    "      delete requested copies/parts anyway.\n"
+    "\n"
     "vitastor-cli alloc-osd\n"
     "  Allocate a new OSD number and reserve it by creating empty /osd/stats/<n> key.\n"
     "\n"
@@ -168,6 +199,7 @@ static json11::Json::object parse_args(int narg, const char *args[])
 static int run(cli_tool_t *p, json11::Json::object cfg)
 {
     cli_result_t result = {};
+    p->is_command_line = true;
     p->parse_config(cfg);
     json11::Json::array cmd = cfg["command"].array_items();
     cfg.erase("command");
@@ -276,6 +308,16 @@ static int run(cli_tool_t *p, json11::Json::object cfg)
         }
         action_cb = p->start_rm(cfg);
     }
+    else if (cmd[0] == "describe")
+    {
+        // Describe unclean objects
+        action_cb = p->start_describe(cfg);
+    }
+    else if (cmd[0] == "fix")
+    {
+        // Fix inconsistent objects (by deleting some copies)
+        action_cb = p->start_fix(cfg);
+    }
     else if (cmd[0] == "alloc-osd")
     {
         // Allocate a new OSD number

src/cli.h

@@ -34,12 +34,12 @@ public:
     bool list_first = false;
     bool json_output = false;
     int log_level = 0;
+    bool is_command_line = false;
     bool color = false;
 
     ring_loop_t *ringloop = NULL;
     epoll_manager_t *epmgr = NULL;
     cluster_client_t *cli = NULL;
-    bool no_recovery = false, no_rebalance = false, readonly = false;
 
     int waiting = 0;
     cli_result_t etcd_err;
@@ -56,6 +56,8 @@ public:
     friend struct snap_remover_t;
 
     std::function<bool(cli_result_t &)> start_status(json11::Json);
+    std::function<bool(cli_result_t &)> start_describe(json11::Json);
+    std::function<bool(cli_result_t &)> start_fix(json11::Json);
     std::function<bool(cli_result_t &)> start_df(json11::Json);
     std::function<bool(cli_result_t &)> start_ls(json11::Json);
     std::function<bool(cli_result_t &)> start_create(json11::Json);

src/cli_describe.cpp

@@ -0,0 +1,256 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 (see README.md for details)
+
+#include "cli_fix.h"
+#include "cluster_client.h"
+#include "pg_states.h"
+#include "str_util.h"
+
+std::vector<uint64_t> parse_uint64_list(json11::Json val)
+{
+    std::vector<uint64_t> ret;
+    if (val.is_number())
+        ret.push_back(val.uint64_value());
+    else if (val.is_string())
+    {
+        const std::string & s = val.string_value();
+        for (int i = 0, p = -1; i <= s.size(); i++)
+        {
+            if (p < 0 && i < s.size() && (isdigit(s[i]) || s[i] == 'x'))
+                p = i;
+            else if (p >= 0 && (i >= s.size() || !isdigit(s[i]) && s[i] != 'x'))
+            {
+                ret.push_back(stoull_full(s.substr(p, i-p), 0));
+                p = -1;
+            }
+        }
+    }
+    else if (val.is_array())
+    {
+        for (auto & pg_num: val.array_items())
+            ret.push_back(pg_num.uint64_value());
+    }
+    return ret;
+}
+
+struct cli_describe_t
+{
+    uint64_t object_state = 0;
+    pool_id_t only_pool = 0;
+    std::vector<uint64_t> only_osds;
+    uint64_t min_inode = 0, max_inode = 0;
+    uint64_t min_offset = 0, max_offset = 0;
+
+    cli_tool_t *parent = NULL;
+    int state = 0;
+    int count = 0;
+
+    json11::Json options;
+    cli_result_t result;
+    json11::Json::array describe_items;
+
+    bool is_done()
+    {
+        return state == 100;
+    }
+
+    void parse_options(json11::Json cfg)
+    {
+        only_pool = cfg["pool"].uint64_value();
+        if (!only_pool && cfg["pool"].is_string())
+        {
+            for (auto & pp: parent->cli->st_cli.pool_config)
+            {
+                if (pp.second.name == cfg["pool"].string_value())
+                {
+                    only_pool = pp.first;
+                    break;
+                }
+            }
+        }
+        min_inode = cfg["inode"].uint64_value();
+        if (min_inode)
+        {
+            if (!INODE_POOL(min_inode))
+                min_inode |= (uint64_t)only_pool << (64-POOL_ID_BITS);
+            max_inode = min_inode;
+            min_offset = max_offset = 0;
+        }
+        else
+        {
+            min_inode = stoull_full(cfg["min_inode"].string_value(), 0); // to support 0x...
+            max_inode = stoull_full(cfg["max_inode"].string_value(), 0);
+            min_offset = stoull_full(cfg["min_offset"].string_value(), 0);
+            max_offset = stoull_full(cfg["max_offset"].string_value(), 0);
+            if (!min_inode && !max_inode && only_pool)
+            {
+                min_inode = (uint64_t)only_pool << (64-POOL_ID_BITS);
+                max_inode = ((uint64_t)only_pool << (64-POOL_ID_BITS)) |
+                    (((uint64_t)1 << (64-POOL_ID_BITS)) - 1);
+            }
+        }
+        only_osds = parse_uint64_list(cfg["osds"]);
+        object_state = stoull_full(cfg["object_state"].string_value(), 0);
+        if (!object_state && cfg["object_state"].is_string())
+        {
+            if (cfg["object_state"].string_value().find("inconsistent") != std::string::npos)
+                object_state |= OBJ_INCONSISTENT;
+            if (cfg["object_state"].string_value().find("corrupted") != std::string::npos)
+                object_state |= OBJ_CORRUPTED;
+            if (cfg["object_state"].string_value().find("incomplete") != std::string::npos)
+                object_state |= OBJ_INCOMPLETE;
+            if (cfg["object_state"].string_value().find("degraded") != std::string::npos)
+                object_state |= OBJ_DEGRADED;
+            if (cfg["object_state"].string_value().find("misplaced") != std::string::npos)
+                object_state |= OBJ_MISPLACED;
+        }
+    }
+
+    void loop()
+    {
+        if (state == 1)
+            goto resume_1;
+        if (state == 100)
+            return;
+        parse_options(options);
+        if (min_inode && !INODE_POOL(min_inode))
+        {
+            result = (cli_result_t){ .err = EINVAL, .text = "Pool is not specified" };
+            state = 100;
+            return;
+        }
+        if (!only_osds.size())
+        {
+            uint64_t min_pool = min_inode >> (64-POOL_ID_BITS);
+            uint64_t max_pool = max_inode >> (64-POOL_ID_BITS);
+            for (auto & pp: parent->cli->st_cli.pool_config)
+            {
+                if (pp.first >= min_pool && (!max_pool || pp.first <= max_pool))
+                {
+                    for (auto & pgp: pp.second.pg_config)
+                        only_osds.push_back(pgp.second.cur_primary);
+                }
+            }
+        }
+        remove_duplicates(only_osds);
+        parent->cli->init_msgr();
+        if (parent->json_output && parent->is_command_line)
+        {
+            printf("[\n");
+        }
+        for (int i = 0; i < only_osds.size(); i++)
+        {
+            osd_op_t *op = new osd_op_t;
+            op->req = (osd_any_op_t){
+                .describe = {
+                    .header = {
+                        .magic = SECONDARY_OSD_OP_MAGIC,
+                        .id = parent->cli->next_op_id(),
+                        .opcode = OSD_OP_DESCRIBE,
+                    },
+                    .object_state = object_state,
+                    .min_inode = min_inode,
+                    .min_offset = min_offset,
+                    .max_inode = max_inode,
+                    .max_offset = max_offset,
+                },
+            };
+            op->callback = [this, osd_num = only_osds[i]](osd_op_t *op)
+            {
+                if (op->reply.hdr.retval < 0)
+                {
+                    fprintf(
+                        stderr, "Failed to describe objects on OSD %lu (retval=%ld)\n",
+                        osd_num, op->reply.hdr.retval
+                    );
+                }
+                else if (op->reply.describe.result_bytes != op->reply.hdr.retval * sizeof(osd_reply_describe_item_t))
+                {
+                    fprintf(
+                        stderr, "Invalid response size from OSD %lu (expected %lu bytes, got %lu bytes)\n",
+                        osd_num, op->reply.hdr.retval * sizeof(osd_reply_describe_item_t), op->reply.describe.result_bytes
+                    );
+                }
+                else
+                {
+                    osd_reply_describe_item_t *items = (osd_reply_describe_item_t *)op->buf;
+                    for (int i = 0; i < op->reply.hdr.retval; i++)
+                    {
+                        if (!parent->json_output || parent->is_command_line)
+                        {
+#define FMT "{\"inode\":\"0x%lx\",\"stripe\":\"0x%lx\",\"part\":%u,\"osd_num\":%lu%s%s%s}"
+                            printf(
+                                (parent->json_output
+                                    ? (count > 0 ? ",\n  " FMT : "  " FMT)
+                                    : "%lx:%lx part %u on OSD %lu%s%s%s\n"),
+#undef FMT
+                                items[i].inode, items[i].stripe,
+                                items[i].role, items[i].osd_num,
+                                (items[i].loc_bad & LOC_CORRUPTED ? (parent->json_output ? ",\"corrupted\":true" : " corrupted") : ""),
+                                (items[i].loc_bad & LOC_INCONSISTENT ? (parent->json_output ? ",\"inconsistent\":true" : " inconsistent") : ""),
+                                (items[i].loc_bad & LOC_OUTDATED ? (parent->json_output ? ",\"outdated\":true" : " outdated") : "")
+                            );
+                        }
+                        else
+                        {
+                            auto json_item = json11::Json::object {
+                                { "inode", (uint64_t)items[i].inode },
+                                { "stripe", (uint64_t)items[i].stripe },
+                                { "part", (uint64_t)items[i].role },
+                                { "osd_num", (uint64_t)items[i].osd_num },
+                            };
+                            if (items[i].loc_bad & LOC_CORRUPTED)
+                                json_item["corrupted"] = true;
+                            if (items[i].loc_bad & LOC_INCONSISTENT)
+                                json_item["inconsistent"] = true;
+                            if (items[i].loc_bad & LOC_OUTDATED)
+                                json_item["outdated"] = true;
+                            describe_items.push_back(json_item);
+                        }
+                        count++;
+                    }
+                }
+                delete op;
+                parent->waiting--;
+                if (!parent->waiting)
+                    loop();
+            };
+            parent->waiting++;
+            parent->cli->execute_raw(only_osds[i], op);
+        }
+    resume_1:
+        state = 1;
+        if (parent->waiting > 0)
+        {
+            return;
+        }
+        if (parent->json_output && parent->is_command_line)
+        {
+            printf(count > 0 ? "\n]\n" : "]\n");
+        }
+        else
+        {
+            result.data = describe_items;
+        }
+        state = 100;
+        describe_items.clear();
+    }
+};
+
+std::function<bool(cli_result_t &)> cli_tool_t::start_describe(json11::Json cfg)
+{
+    auto describer = new cli_describe_t();
+    describer->parent = this;
+    describer->options = cfg;
+    return [describer](cli_result_t & result)
+    {
+        describer->loop();
+        if (describer->is_done())
+        {
+            result = describer->result;
+            delete describer;
+            return true;
+        }
+        return false;
+    };
+}

src/cli_fix.cpp

@@ -0,0 +1,313 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 (see README.md for details)
+
+#include "cli_fix.h"
+#include "cluster_client.h"
+#include "pg_states.h"
+#include "str_util.h"
+
+struct cli_fix_t
+{
+    std::vector<object_id> objects;
+    int part = -1;
+    int processed_count = 0;
+    std::set<osd_num_t> bad_osds;
+    bool no_check = false;
+
+    cli_tool_t *parent = NULL;
+    int state = 0;
+
+    json11::Json options;
+    cli_result_t result;
+    json11::Json::array fix_result;
+
+    bool is_done()
+    {
+        return state == 100;
+    }
+
+    void parse_objects_str(std::string str)
+    {
+        str = trim(str);
+        if (str[0] == '[')
+        {
+            std::string json_err;
+            json11::Json list = json11::Json::parse(str, json_err);
+            if (json_err != "")
+                fprintf(stderr, "Invalid JSON object list input: %s\n", json_err.c_str());
+            else
+                parse_object_list(list);
+        }
+        else
+        {
+            const char *s = str.c_str();
+            char *e = NULL;
+            int len = str.size();
+            object_id oid;
+            for (int p = 0; p < len; p++)
+            {
+                if (isdigit(s[p]))
+                {
+                    int p0 = p;
+                    oid.inode = strtoull(s+p, &e, 0);
+                    p = e-s;
+                    while (p < len && !isdigit(s[p]) && s[p] != ':')
+                        p++;
+                    if (s[p] != ':')
+                    {
+                        fprintf(stderr, "Invalid object ID in input: %s\n", std::string(s+p0, p-p0).c_str());
+                        continue;
+                    }
+                    p++;
+                    while (p < len && !isdigit(s[p]))
+                        p++;
+                    oid.stripe = strtoull(s+p, &e, 0) & ~STRIPE_MASK;
+                    p = e-s;
+                    if (oid.inode)
+                        objects.push_back(oid);
+                    else
+                        fprintf(stderr, "Invalid object ID in input: %s\n", std::string(s+p0, p-p0).c_str());
+                }
+            }
+        }
+    }
+
+    void parse_object_list(json11::Json list)
+    {
+        for (auto & obj: list.array_items())
+        {
+            object_id oid = (object_id){
+                .inode = stoull_full(obj["inode"].string_value(), 0),
+                .stripe = stoull_full(obj["stripe"].string_value(), 0) & ~STRIPE_MASK,
+            };
+            if (oid.inode)
+                objects.push_back(oid);
+            else
+                fprintf(stderr, "Invalid JSON object ID in input: %s, bad or missing \"inode\" field\n", obj.dump().c_str());
+        }
+    }
+
+    void parse_options(json11::Json cfg)
+    {
+        json11::Json object_list;
+        if (cfg["objects"].is_null())
+            parse_objects_str(read_all_fd(0));
+        else if (cfg["objects"].is_string())
+            parse_objects_str(cfg["objects"].string_value());
+        else
+            parse_object_list(cfg["objects"].array_items());
+        for (auto osd_num: parse_uint64_list(cfg["bad_osds"]))
+            bad_osds.insert(osd_num);
+        no_check = json_is_false(cfg["check"]);
+        if (cfg["part"].is_number() || cfg["part"].is_string())
+            part = cfg["part"].uint64_value();
+    }
+
+    void loop()
+    {
+        if (state == 1)
+            goto resume_1;
+        if (state == 100)
+            return;
+        parse_options(options);
+        if (!objects.size())
+        {
+            result = (cli_result_t){ .err = EINVAL, .text = "Object list is not specified" };
+            state = 100;
+            return;
+        }
+        if (!bad_osds.size())
+        {
+            result = (cli_result_t){ .err = EINVAL, .text = "OSDs are not specified" };
+            state = 100;
+            return;
+        }
+        remove_duplicates(objects);
+        parent->cli->init_msgr();
+    resume_1:
+        state = 1;
+        while (processed_count < objects.size())
+        {
+            if (parent->waiting >= parent->iodepth*parent->parallel_osds)
+            {
+                return;
+            }
+            auto & obj = objects[processed_count++];
+            auto pool_cfg_it = parent->cli->st_cli.pool_config.find(INODE_POOL(obj.inode));
+            if (pool_cfg_it == parent->cli->st_cli.pool_config.end())
+            {
+                fprintf(stderr, "Object %lx:%lx is from unknown pool\n", obj.inode, obj.stripe);
+                continue;
+            }
+            auto & pool_cfg = pool_cfg_it->second;
+            pg_num_t pg_num = (obj.stripe/pool_cfg.pg_stripe_size) % pool_cfg.real_pg_count + 1; // like map_to_pg()
+            auto pg_it = pool_cfg.pg_config.find(pg_num);
+            if (pg_it == pool_cfg.pg_config.end() ||
+                !pg_it->second.cur_primary || !(pg_it->second.cur_state & PG_ACTIVE))
+            {
+                fprintf(
+                    stderr, "Object %lx:%lx is from PG %u/%u which is not currently active\n",
+                    obj.inode, obj.stripe, pool_cfg_it->first, pg_num
+                );
+                continue;
+            }
+            osd_num_t primary_osd = pg_it->second.cur_primary;
+            // Describe -> Remove some copies -> Scrub again
+            osd_op_t *op = new osd_op_t;
+            op->req = (osd_any_op_t){
+                .describe = {
+                    .header = {
+                        .magic = SECONDARY_OSD_OP_MAGIC,
+                        .id = parent->cli->next_op_id(),
+                        .opcode = OSD_OP_DESCRIBE,
+                    },
+                    .min_inode = obj.inode,
+                    .min_offset = obj.stripe,
+                    .max_inode = obj.inode,
+                    .max_offset = obj.stripe,
+                },
+            };
+            op->callback = [this, primary_osd, &obj](osd_op_t *op)
+            {
+                if (op->reply.hdr.retval < 0 || op->reply.describe.result_bytes != op->reply.hdr.retval * sizeof(osd_reply_describe_item_t))
+                {
+                    fprintf(stderr, "Failed to describe objects on OSD %lu (retval=%ld)\n", primary_osd, op->reply.hdr.retval);
+                    parent->waiting--;
+                    loop();
+                }
+                else
+                {
+                    osd_reply_describe_item_t *items = (osd_reply_describe_item_t *)op->buf;
+                    int *rm_count = (int*)malloc_or_die(sizeof(int));
+                    *rm_count = 1; // just in case if anything gets called instantly
+                    for (int i = 0; i < op->reply.hdr.retval; i++)
+                    {
+                        if (((items[i].loc_bad & LOC_INCONSISTENT) || no_check) &&
+                            bad_osds.find(items[i].osd_num) != bad_osds.end() &&
+                            (part == -1 || items[i].role == part))
+                        {
+                            // Remove
+                            uint64_t rm_osd_num = items[i].osd_num;
+                            osd_op_t *rm_op = new osd_op_t;
+                            rm_op->req = (osd_any_op_t){
+                                .sec_del = {
+                                    .header = {
+                                        .magic = SECONDARY_OSD_OP_MAGIC,
+                                        .id = parent->cli->next_op_id(),
+                                        .opcode = OSD_OP_SEC_DELETE,
+                                    },
+                                    .oid = {
+                                        .inode = op->req.describe.min_inode,
+                                        .stripe = op->req.describe.min_offset | items[i].role,
+                                    },
+                                    .version = 0,
+                                },
+                            };
+                            rm_op->callback = [this, primary_osd, rm_osd_num, rm_count, &obj](osd_op_t *rm_op)
+                            {
+                                (*rm_count)--;
+                                if (rm_op->reply.hdr.retval < 0)
+                                {
+                                    fprintf(
+                                        stderr, "Failed to remove object %lx:%lx from OSD %lu (retval=%ld)\n",
+                                        rm_op->req.sec_del.oid.inode, rm_op->req.sec_del.oid.stripe,
+                                        rm_osd_num, rm_op->reply.hdr.retval
+                                    );
+                                }
+                                else if (parent->json_output)
+                                {
+                                    fix_result.push_back(json11::Json::object {
+                                        { "inode", (uint64_t)rm_op->req.sec_del.oid.inode },
+                                        { "stripe", (uint64_t)rm_op->req.sec_del.oid.stripe & ~STRIPE_MASK },
+                                        { "part", (uint64_t)rm_op->req.sec_del.oid.stripe & STRIPE_MASK },
+                                        { "osd_num", (uint64_t)rm_osd_num },
+                                    });
+                                }
+                                else
+                                {
+                                    printf(
+                                        "Removed %lx:%lx (part %lu) from OSD %lu\n",
+                                        rm_op->req.sec_del.oid.inode, rm_op->req.sec_del.oid.stripe & ~STRIPE_MASK,
+                                        rm_op->req.sec_del.oid.stripe & STRIPE_MASK, rm_osd_num
+                                    );
+                                }
+                                delete rm_op;
+                                if (!(*rm_count))
+                                {
+                                    // Scrub
+                                    free(rm_count);
+                                    osd_op_t *scrub_op = new osd_op_t;
+                                    scrub_op->req = (osd_any_op_t){
+                                        .rw = {
+                                            .header = {
+                                                .magic = SECONDARY_OSD_OP_MAGIC,
+                                                .id = parent->cli->next_op_id(),
+                                                .opcode = OSD_OP_SCRUB,
+                                            },
+                                            .inode = obj.inode,
+                                            .offset = obj.stripe,
+                                            .len = 0,
+                                        },
+                                    };
+                                    scrub_op->callback = [this, primary_osd, &obj](osd_op_t *scrub_op)
+                                    {
+                                        if (scrub_op->reply.hdr.retval < 0 && scrub_op->reply.hdr.retval != -ENOENT)
+                                        {
+                                            fprintf(
+                                                stderr, "Failed to scrub %lx:%lx on OSD %lu (retval=%ld)\n",
+                                                obj.inode, obj.stripe, primary_osd, scrub_op->reply.hdr.retval
+                                            );
+                                        }
+                                        delete scrub_op;
+                                        parent->waiting--;
+                                        loop();
+                                    };
+                                    parent->cli->execute_raw(primary_osd, scrub_op);
+                                }
+                            };
+                            (*rm_count)++;
+                            parent->cli->execute_raw(rm_osd_num, rm_op);
+                        }
+                    }
+                    (*rm_count)--;
+                    if (!*rm_count)
+                    {
+                        free(rm_count);
+                        parent->waiting--;
+                        loop();
+                    }
+                }
+                delete op;
+            };
+            parent->waiting++;
+            parent->cli->execute_raw(primary_osd, op);
+        }
+        if (parent->waiting > 0)
+        {
+            return;
+        }
+        if (parent->json_output)
+        {
+            result.data = fix_result;
+        }
+        state = 100;
+    }
+};
+
+std::function<bool(cli_result_t &)> cli_tool_t::start_fix(json11::Json cfg)
+{
+    auto fixer = new cli_fix_t();
+    fixer->parent = this;
+    fixer->options = cfg;
+    return [fixer](cli_result_t & result)
+    {
+        fixer->loop();
+        if (fixer->is_done())
+        {
+            result = fixer->result;
+            delete fixer;
+            return true;
+        }
+        return false;
+    };
+}

src/cli_fix.h

@@ -0,0 +1,26 @@
+// Copyright (c) Vitaliy Filippov, 2019+
+// License: VNPL-1.1 (see README.md for details)
+
+#pragma once
+
+#include "cli.h"
+#include <algorithm>
+
+std::vector<uint64_t> parse_uint64_list(json11::Json val);
+
+template<class T> void remove_duplicates(std::vector<T> & ret)
+{
+    if (!ret.size())
+        return;
+    std::sort(ret.begin(), ret.end());
+    int j = 0;
+    for (int i = 1; i < ret.size(); i++)
+    {
+        if (ret[i] != ret[j])
+            ret[++j] = ret[i];
+    }
+    ret.resize(j+1);
+}
+
+// from http_client.cpp...
+bool json_is_false(const json11::Json & val);

src/cli_merge.cpp

@@ -41,7 +41,7 @@ struct snap_merger_t
     int fsync_interval = 128;
 
     // -- STATE --
-    inode_t target;
+    inode_t target, to_num;
     int target_rank;
     bool inside_continue = false;
     int state = 0;
@@ -98,6 +98,7 @@ struct snap_merger_t
             state = 100;
             return;
         }
+        to_num = to_cfg->num;
         // Check that to_cfg is actually a child of from_cfg and target_cfg is somewhere between them
         std::vector<inode_t> chain_list;
         inode_config_t *cur = to_cfg;
@@ -451,7 +452,7 @@ struct snap_merger_t
     {
         cluster_op_t *op = &rwo->op;
         op->opcode = OSD_OP_READ;
-        op->inode = target;
+        op->inode = to_num;
         op->offset = rwo->offset;
         op->len = target_block_size;
         op->iov.push_back(rwo->buf, target_block_size);
@@ -483,7 +484,7 @@ struct snap_merger_t
                 {
                     // write start->end
                     rwo->todo++;
-                    write_subop(rwo, rwo->start*gran, rwo->end*gran, use_cas ? 1+rwo->op.version : 0);
+                    write_subop(rwo, rwo->start*gran, rwo->end*gran, use_cas && to_num == target ? 1+rwo->op.version : 0);
                     rwo->start = rwo->end;
                     if (use_cas)
                     {
@@ -502,7 +503,7 @@ struct snap_merger_t
         {
             // write start->end
             rwo->todo++;
-            write_subop(rwo, rwo->start*gran, rwo->end*gran, use_cas ? 1+rwo->op.version : 0);
+            write_subop(rwo, rwo->start*gran, rwo->end*gran, use_cas && to_num == target ? 1+rwo->op.version : 0);
             rwo->start = rwo->end;
             if (use_cas)
             {
@@ -532,7 +533,7 @@ struct snap_merger_t
                 if (use_cas && subop->retval == -EINTR)
                 {
                     // CAS failure - reread and repeat optimistically
-                    rwo->start = subop->offset - rwo->offset;
+                    rwo->start = rwo->end = 0;
                     rwo_read(rwo);
                     delete subop;
                     return;
@@ -542,7 +543,7 @@ struct snap_merger_t
                 rwo->error_read = false;
             }
             // Increment CAS version
-            rwo->op.version++;
+            rwo->op.version = subop->version;
             if (use_cas)
                 next_write(rwo);
             else

src/cli_rm.cpp

@@ -65,6 +65,9 @@ struct snap_remover_t
     int current_child = 0;
     std::function<bool(cli_result_t &)> cb;
 
+    std::vector<std::string> rebased_images, deleted_images;
+    std::vector<uint64_t> deleted_ids;
+    std::string inverse_child_name, inverse_parent_name;
     cli_result_t result;
 
     bool is_done()
@@ -122,6 +125,7 @@ resume_1:
         {
             if (merge_children[current_child] == inverse_child)
                 continue;
+            rebased_images.push_back(parent->cli->st_cli.inode_config.at(merge_children[current_child]).name);
             start_merge_child(merge_children[current_child], merge_children[current_child]);
             if (state == 100)
                 return;
@@ -134,9 +138,12 @@ resume_2:
             cb = NULL;
             if (result.err)
             {
+                result.data = my_result(result.data);
                 state = 100;
                 return;
             }
+            else if (parent->progress)
+                printf("%s\n", result.text.c_str());
             parent->change_parent(merge_children[current_child], new_parent, &result);
             state = 3;
 resume_3:
@@ -144,6 +151,7 @@ resume_3:
                 return;
             if (result.err)
             {
+                result.data = my_result(result.data);
                 state = 100;
                 return;
             }
@@ -165,9 +173,12 @@ resume_4:
             cb = NULL;
             if (result.err)
             {
+                result.data = my_result(result.data);
                 state = 100;
                 return;
             }
+            else if (parent->progress)
+                printf("%s\n", result.text.c_str());
             // Delete "inverse" child data
             start_delete_source(inverse_child);
             if (state == 100)
@@ -181,9 +192,12 @@ resume_5:
             cb = NULL;
             if (result.err)
             {
+                result.data = my_result(result.data);
                 state = 100;
                 return;
             }
+            else if (parent->progress)
+                printf("%s\n", result.text.c_str());
             // Delete "inverse" child metadata, rename parent over it,
             // and also change parent links of the previous "inverse" child
             rename_inverse_parent();
@@ -199,6 +213,12 @@ resume_6:
         {
             if (chain_list[current_child] == inverse_parent)
                 continue;
+            {
+                auto parent_it = parent->cli->st_cli.inode_config.find(chain_list[current_child]);
+                if (parent_it != parent->cli->st_cli.inode_config.end())
+                    deleted_images.push_back(parent_it->second.name);
+                deleted_ids.push_back(chain_list[current_child]);
+            }
             start_delete_source(chain_list[current_child]);
 resume_7:
             while (!cb(result))
@@ -209,9 +229,12 @@ resume_7:
             cb = NULL;
             if (result.err)
             {
+                result.data = my_result(result.data);
                 state = 100;
                 return;
             }
+            else if (parent->progress)
+                printf("%s\n", result.text.c_str());
             delete_inode_config(chain_list[current_child]);
             if (state == 100)
                 return;
@@ -221,11 +244,26 @@ resume_8:
                 return;
         }
         state = 100;
+        result = (cli_result_t){
+            .text = "",
+            .data = my_result(result.data),
+        };
 resume_100:
         // Done
         return;
     }
 
+    json11::Json my_result(json11::Json src)
+    {
+        auto obj = src.object_items();
+        obj["deleted_ids"] = deleted_ids;
+        obj["deleted_images"] = deleted_images;
+        obj["rebased_images"] = rebased_images;
+        obj["renamed_from"] = inverse_parent_name;
+        obj["renamed_to"] = inverse_child_name;
+        return obj;
+    }
+
     void get_merge_children()
     {
         // Get all children of from..to
@@ -338,7 +376,11 @@ resume_100:
             }
             for (auto inode_result: data["responses"].array_items())
             {
-                auto kv = parent->cli->st_cli.parse_etcd_kv(inode_result["kvs"][0]);
+                if (inode_result["response_range"]["kvs"].array_items().size() == 0)
+                {
+                    continue;
+                }
+                auto kv = parent->cli->st_cli.parse_etcd_kv(inode_result["response_range"]["kvs"][0]);
                 pool_id_t pool_id = 0;
                 inode_t inode = 0;
                 char null_byte = 0;
@@ -377,7 +419,7 @@ resume_100:
             inode_t child = cp.first;
             uint64_t child_used = inode_used[child];
             int rank = cp.second;
-            for (int i = chain_list.size()-rank; i < chain_list.size(); i++)
+            for (int i = chain_list.size()-1-rank; i < chain_list.size(); i++)
             {
                 inode_t parent = chain_list[i];
                 uint64_t parent_used = inode_used[parent];
@@ -413,8 +455,8 @@ resume_100:
         }
         inode_config_t *child_cfg = &child_it->second;
         inode_config_t *target_cfg = &target_it->second;
-        std::string child_name = child_cfg->name;
-        std::string target_name = target_cfg->name;
+        inverse_child_name = child_cfg->name;
+        inverse_parent_name = target_cfg->name;
         std::string child_cfg_key = base64_encode(
             parent->cli->st_cli.etcd_prefix+
             "/config/inode/"+std::to_string(INODE_POOL(inverse_child))+
@@ -425,6 +467,9 @@ resume_100:
             "/config/inode/"+std::to_string(INODE_POOL(inverse_parent))+
             "/"+std::to_string(INODE_NO_POOL(inverse_parent))
         );
+        std::string target_idx_key = base64_encode(
+            parent->cli->st_cli.etcd_prefix+"/index/image/"+inverse_parent_name
+        );
         // Fill new configuration
         inode_config_t new_cfg = *child_cfg;
         new_cfg.num = target_cfg->num;
@@ -449,6 +494,11 @@ resume_100:
                     { "key", child_cfg_key },
                 } },
             },
+            json11::Json::object {
+                { "request_delete_range", json11::Json::object {
+                    { "key", target_idx_key },
+                } },
+            },
             json11::Json::object {
                 { "request_put", json11::Json::object {
                     { "key", target_cfg_key },
@@ -495,12 +545,12 @@ resume_100:
         parent->cli->st_cli.etcd_txn_slow(json11::Json::object {
             { "compare", cmp },
             { "success", txn },
-        }, [this, target_name, child_name](std::string err, json11::Json res)
+        }, [this](std::string err, json11::Json res)
         {
             parent->waiting--;
             if (err != "")
             {
-                result = (cli_result_t){ .err = EIO, .text = "Error renaming "+target_name+" to "+child_name+": "+err };
+                result = (cli_result_t){ .err = EIO, .text = "Error renaming "+inverse_parent_name+" to "+inverse_child_name+": "+err };
                 state = 100;
                 return;
             }
@@ -508,14 +558,14 @@ resume_100:
             {
                 result = (cli_result_t){
                     .err = EAGAIN,
-                    .text = "Parent ("+target_name+"), child ("+child_name+"), or one of its children"
+                    .text = "Parent ("+inverse_parent_name+"), child ("+inverse_child_name+"), or one of its children"
                         " configuration was modified during rename",
                 };
                 state = 100;
                 return;
             }
             if (parent->progress)
-                printf("Layer %s renamed to %s\n", target_name.c_str(), child_name.c_str());
+                printf("Layer %s renamed to %s\n", inverse_parent_name.c_str(), inverse_child_name.c_str());
             parent->ringloop->wakeup();
         });
     }

src/cli_rm_data.cpp

@@ -28,6 +28,7 @@ struct rm_inode_t
     cli_tool_t *parent = NULL;
     inode_list_t *lister = NULL;
     std::vector<rm_pg_t*> lists;
+    std::vector<osd_num_t> inactive_osds;
     uint64_t total_count = 0, total_done = 0, total_prev_pct = 0;
     uint64_t pgs_to_list = 0;
     bool lists_done = false;
@@ -86,6 +87,16 @@ struct rm_inode_t
             state = 100;
             return;
         }
+        inactive_osds = parent->cli->list_inode_get_inactive_osds(lister);
+        if (inactive_osds.size() && !parent->json_output)
+        {
+            fprintf(stderr, "Some data may remain after delete on OSDs which are currently down: ");
+            for (int i = 0; i < inactive_osds.size(); i++)
+            {
+                fprintf(stderr, i > 0 ? ", %lu" : "%lu", inactive_osds[i]);
+            }
+            fprintf(stderr, "\n");
+        }
         pgs_to_list = parent->cli->list_pg_count(lister);
         parent->cli->list_inode_next(lister, parent->parallel_osds);
     }
@@ -167,16 +178,33 @@ struct rm_inode_t
         }
         if (parent->progress && total_count > 0 && total_done*1000/total_count != total_prev_pct)
         {
-            printf("\rRemoved %lu/%lu objects, %lu more PGs to list...", total_done, total_count, pgs_to_list);
+            fprintf(stderr, "\rRemoved %lu/%lu objects, %lu more PGs to list...", total_done, total_count, pgs_to_list);
             total_prev_pct = total_done*1000/total_count;
         }
         if (lists_done && !lists.size())
         {
+            if (parent->progress && total_count > 0)
+            {
+                fprintf(stderr, "\n");
+            }
+            if (parent->progress && (total_done < total_count || inactive_osds.size() > 0))
+            {
+                fprintf(
+                    stderr, "Warning: Pool:%u,ID:%lu inode data may not have been fully removed.\n"
+                    " Use `vitastor-cli rm-data --pool %u --inode %lu` if you encounter it in listings.\n",
+                    pool_id, INODE_NO_POOL(inode), pool_id, INODE_NO_POOL(inode)
+                );
+            }
             result = (cli_result_t){
                 .err = error_count > 0 ? EIO : 0,
                 .text = error_count > 0 ? "Some blocks were not removed" : (
                     "Done, inode "+std::to_string(INODE_NO_POOL(inode))+" from pool "+
                     std::to_string(pool_id)+" removed"),
+                .data = json11::Json::object {
+                    { "removed_objects", total_done },
+                    { "total_objects", total_count },
+                    { "inactive_osds", inactive_osds },
+                },
             };
             state = 100;
         }

src/cli_rm_osd.cpp

@@ -88,7 +88,7 @@ struct rm_osd_t
                 for (auto & hist_item: pg_cfg.target_history)
                 {
                     int hist_size = 0, hist_rm = 0;
-                    for (auto & old_osd: hist_item.osd_set)
+                    for (auto & old_osd: hist_item)
                     {
                         if (old_osd != 0)
                         {
@@ -382,7 +382,7 @@ struct rm_osd_t
                 for (int i = 0; i < pg_cfg.target_history.size(); i++)
                 {
                     int hist_size = 0, hist_rm = 0;
-                    for (auto & old_osd: pg_cfg.target_history[i].osd_set)
+                    for (auto & old_osd: pg_cfg.target_history[i])
                     {
                         if (old_osd != 0)
                         {
@@ -406,27 +406,21 @@ struct rm_osd_t
                 }
                 if (update_pg_history)
                 {
-                    json11::Json::array target_history;
-                    for (auto & pgh: pg_cfg.target_history)
-                    {
-                        target_history.push_back(json11::Json::object {
-                            { "osd_set", pgh.osd_set },
-                            { "min_epoch", pgh.min_epoch },
-                            { "max_epoch", pgh.max_epoch },
-                        });
-                    }
                     std::string history_key = base64_encode(
                         parent->cli->st_cli.etcd_prefix+"/pg/history/"+
                         std::to_string(pool_cfg.id)+"/"+std::to_string(pg_num)
                     );
+                    auto hist = json11::Json::object {
+                        { "epoch", pg_cfg.epoch },
+                        { "all_peers", pg_cfg.all_peers },
+                        { "osd_sets", pg_cfg.target_history },
+                    };
+                    if (pg_cfg.next_scrub)
+                        hist["next_scrub"] = pg_cfg.next_scrub;
                     history_updates.push_back(json11::Json::object {
                         { "request_put", json11::Json::object {
                             { "key", history_key },
-                            { "value", base64_encode(json11::Json(json11::Json::object {
-                                { "epoch", pg_cfg.epoch },
-                                { "all_peers", pg_cfg.all_peers },
-                                { "osd_set_epochs", target_history },
-                            }).dump()) },
+                            { "value", base64_encode(json11::Json(hist).dump()) },
                         } },
                     });
                     history_checks.push_back(json11::Json::object {

src/cli_status.cpp

@@ -12,7 +12,7 @@ static const char *obj_states[] = { "clean", "misplaced", "degraded", "incomplet
 // Print cluster status:
 // etcd, mon, osd states
 // raw/used space, object states, pool states, pg states
-// client io, recovery io, rebalance io
+// client io, recovery io, rebalance io, scrub io
 struct status_printer_t
 {
     cli_tool_t *parent;
@@ -201,6 +201,7 @@ resume_2:
         bool readonly = json_is_true(parent->cli->config["readonly"]);
         bool no_recovery = json_is_true(parent->cli->config["no_recovery"]);
         bool no_rebalance = json_is_true(parent->cli->config["no_rebalance"]);
+        bool no_scrub = json_is_true(parent->cli->config["no_scrub"]);
         if (parent->json_output)
         {
             // JSON output
@@ -219,6 +220,7 @@ resume_2:
                 { "readonly", readonly },
                 { "no_recovery", no_recovery },
                 { "no_rebalance", no_rebalance },
+                { "no_scrub", no_scrub },
                 { "pool_count", pool_count },
                 { "active_pool_count", pools_active },
                 { "pg_states", pgs_by_state },
@@ -250,18 +252,25 @@ resume_2:
         }
         more_states.resize(more_states.size()-2);
         std::string recovery_io;
+        int io_indent = 0;
         {
             uint64_t deg_bps = agg_stats["recovery_stats"]["degraded"]["bps"].uint64_value();
             uint64_t deg_iops = agg_stats["recovery_stats"]["degraded"]["iops"].uint64_value();
             uint64_t misp_bps = agg_stats["recovery_stats"]["misplaced"]["bps"].uint64_value();
             uint64_t misp_iops = agg_stats["recovery_stats"]["misplaced"]["iops"].uint64_value();
+            uint64_t scrub_bps = agg_stats["op_stats"]["scrub"]["bps"].uint64_value();
+            uint64_t scrub_iops = agg_stats["op_stats"]["scrub"]["iops"].uint64_value();
+            if (misp_iops > 0 || misp_bps > 0 || no_rebalance)
+                io_indent = 3;
+            else if (deg_iops > 0 || deg_bps > 0 || no_recovery)
+                io_indent = 2;
             if (deg_iops > 0 || deg_bps > 0)
             {
-                recovery_io += "    recovery:  "+std::string(no_recovery ? "disabled, " : "")+
+                recovery_io += "    recovery: "+str_repeat(" ", io_indent-2)+std::string(no_recovery ? "disabled, " : "")+
                     format_size(deg_bps)+"/s, "+format_size(deg_iops, true)+" op/s\n";
             }
             else if (no_recovery)
-                recovery_io += "    recovery:  disabled\n";
+                recovery_io += "    recovery: disabled\n";
             if (misp_iops > 0 || misp_bps > 0)
             {
                 recovery_io += "    rebalance: "+std::string(no_rebalance ? "disabled, " : "")+
@@ -269,6 +278,13 @@ resume_2:
             }
             else if (no_rebalance)
                 recovery_io += "    rebalance: disabled\n";
+            if (scrub_iops > 0 || scrub_bps > 0)
+            {
+                recovery_io += "    scrub: "+str_repeat(" ", io_indent+1)+std::string(no_scrub ? "disabled, " : "")+
+                    format_size(scrub_bps)+"/s, "+format_size(scrub_iops, true)+" op/s\n";
+            }
+            else if (no_scrub)
+                recovery_io += "    scrub: "+str_repeat(" ", io_indent+1)+"disabled\n";
         }
         printf(
             "  cluster:\n"
@@ -296,7 +312,7 @@ resume_2:
             pools_active, pool_count,
             pgs_by_state_str.c_str(),
             readonly ? " (read-only mode)" : "",
-            recovery_io.size() > 0 ? "   " : "",
+            str_repeat(" ", io_indent).c_str(),
             format_size(agg_stats["op_stats"]["primary_read"]["bps"].uint64_value()).c_str(),
             format_size(agg_stats["op_stats"]["primary_read"]["iops"].uint64_value(), true).c_str(),
             format_size(agg_stats["op_stats"]["primary_write"]["bps"].uint64_value()).c_str(),

src/cluster_client.cpp

@@ -35,6 +35,7 @@ cluster_client_t::cluster_client_t(ring_loop_t *ringloop, timerfd_manager_t *tfd
             // peer_osd just connected
             continue_ops();
             continue_lists();
+            continue_raw_ops(peer_osd);
         }
         else if (dirty_buffers.size())
         {
@@ -104,6 +105,19 @@ cluster_op_t::~cluster_op_t()
     }
 }
 
+void cluster_client_t::continue_raw_ops(osd_num_t peer_osd)
+{
+    auto it = raw_ops.find(peer_osd);
+    while (it != raw_ops.end() && it->first == peer_osd)
+    {
+        auto op = it->second;
+        op->op_type = OSD_OP_OUT;
+        op->peer_fd = msgr.osd_peer_fds.at(peer_osd);
+        msgr.outbox_push(op);
+        raw_ops.erase(it++);
+    }
+}
+
 void cluster_client_t::init_msgr()
 {
     if (msgr_initialized)
@@ -512,6 +526,23 @@ void cluster_client_t::execute(cluster_op_t *op)
     }
 }
 
+void cluster_client_t::execute_raw(osd_num_t osd_num, osd_op_t *op)
+{
+    auto fd_it = msgr.osd_peer_fds.find(osd_num);
+    if (fd_it != msgr.osd_peer_fds.end())
+    {
+        op->op_type = OSD_OP_OUT;
+        op->peer_fd = fd_it->second;
+        msgr.outbox_push(op);
+    }
+    else
+    {
+        if (msgr.wanted_peers.find(osd_num) == msgr.wanted_peers.end())
+            msgr.connect_peer(osd_num, st_cli.peer_states[osd_num]);
+        raw_ops.emplace(osd_num, op);
+    }
+}
+
 void cluster_client_t::copy_write(cluster_op_t *op, std::map<object_id, cluster_buffer_t> & dirty_buffers)
 {
     // Save operation for replay when one of PGs goes out of sync
@@ -743,15 +774,16 @@ resume_3:
         erase_op(op);
         return 1;
     }
-    else if (op->retval != 0 && op->retval != -EPIPE)
+    else if (op->retval != 0 && op->retval != -EPIPE && op->retval != -EIO && op->retval != -ENOSPC)
     {
-        // Fatal error (not -EPIPE)
+        // Fatal error (neither -EPIPE, -EIO nor -ENOSPC)
+        // FIXME: Add a parameter to allow to not wait for EIOs (incomplete or corrupted objects) to heal
         erase_op(op);
         return 1;
     }
     else
     {
-        // -EPIPE - clear the error and retry
+        // Non-fatal error - clear the error and retry
         op->retval = 0;
         if (op->needs_reslice)
         {
@@ -1048,7 +1080,7 @@ resume_1:
                 uw_it->second.state = CACHE_DIRTY;
             }
         }
-        if (op->retval == -EPIPE)
+        if (op->retval == -EPIPE || op->retval == -EIO || op->retval == -ENOSPC)
         {
             // Retry later
             op->parts.clear();
@@ -1119,13 +1151,13 @@ void cluster_client_t::handle_op_part(cluster_op_part_t *part)
     {
         // Operation failed, retry
         part->flags |= PART_ERROR;
-        if (!op->retval || op->retval == -EPIPE)
+        if (!op->retval || op->retval == -EPIPE || part->op.reply.hdr.retval == -EIO)
         {
-            // Don't overwrite other errors with -EPIPE
+            // Error priority: EIO > ENOSPC > EPIPE
             op->retval = part->op.reply.hdr.retval;
         }
         int stop_fd = -1;
-        if (op->retval != -EINTR && op->retval != -EIO)
+        if (op->retval != -EINTR && op->retval != -EIO && op->retval != -ENOSPC)
         {
             stop_fd = part->op.peer_fd;
             fprintf(
@@ -1133,21 +1165,25 @@ void cluster_client_t::handle_op_part(cluster_op_part_t *part)
                 osd_op_names[part->op.req.hdr.opcode], part->osd_num, part->op.reply.hdr.retval, expected
             );
         }
+        else
+        {
+            fprintf(
+                stderr, "%s operation failed on OSD %lu: retval=%ld (expected %d)\n",
+                osd_op_names[part->op.req.hdr.opcode], part->osd_num, part->op.reply.hdr.retval, expected
+            );
+        }
         // All next things like timer, continue_sync/rw and stop_client may affect the operation again
         // So do all these things after modifying operation state, otherwise we may hit reenterability bugs
         // FIXME postpone such things to set_immediate here to avoid bugs
-        if (part->op.reply.hdr.retval == -EPIPE)
+        // Mark op->up_wait = true to retry operation after a short pause (not immediately)
+        op->up_wait = true;
+        if (!retry_timeout_id)
         {
-            // Mark op->up_wait = true before stopping the client
-            op->up_wait = true;
-            if (!retry_timeout_id)
+            retry_timeout_id = tfd->set_timer(up_wait_retry_interval, false, [this](int)
             {
-                retry_timeout_id = tfd->set_timer(up_wait_retry_interval, false, [this](int)
-                {
-                    retry_timeout_id = 0;
-                    continue_ops(true);
-                });
-            }
+                retry_timeout_id = 0;
+                continue_ops(true);
+            });
         }
         if (op->inflight_count == 0)
         {
@@ -1173,6 +1209,10 @@ void cluster_client_t::handle_op_part(cluster_op_part_t *part)
             copy_part_bitmap(op, part);
             op->version = op->parts.size() == 1 ? part->op.reply.rw.version : 0;
         }
+        else if (op->opcode == OSD_OP_WRITE)
+        {
+            op->version = op->parts.size() == 1 ? part->op.reply.rw.version : 0;
+        }
         if (op->inflight_count == 0)
         {
             if (op->opcode == OSD_OP_SYNC)

src/cluster_client.h

@@ -103,6 +103,7 @@ class cluster_client_t
     ring_consumer_t consumer;
     std::vector<std::function<void(void)>> on_ready_hooks;
     std::vector<inode_list_t*> lists;
+    std::multimap<osd_num_t, osd_op_t*> raw_ops;
     int continuing_ops = 0;
     bool msgr_initialized = false;
 
@@ -118,6 +119,7 @@ public:
     cluster_client_t(ring_loop_t *ringloop, timerfd_manager_t *tfd, json11::Json & config);
     ~cluster_client_t();
     void execute(cluster_op_t *op);
+    void execute_raw(osd_num_t osd_num, osd_op_t *op);
     bool is_ready();
     void on_ready(std::function<void(void)> fn);
 
@@ -128,6 +130,7 @@ public:
     inode_list_t *list_inode_start(inode_t inode,
         std::function<void(inode_list_t* lst, std::set<object_id>&& objects, pg_num_t pg_num, osd_num_t primary_osd, int status)> callback);
     int list_pg_count(inode_list_t *lst);
+    const std::vector<osd_num_t> & list_inode_get_inactive_osds(inode_list_t *lst);
     void list_inode_next(inode_list_t *lst, int next_pgs);
     //inline uint32_t get_bs_bitmap_granularity() { return st_cli.global_bitmap_granularity; }
     //inline uint64_t get_bs_block_size() { return st_cli.global_block_size; }
@@ -153,4 +156,5 @@ protected:
     void continue_lists();
     void continue_listing(inode_list_t *lst);
     void send_list(inode_list_osd_t *cur_list);
+    void continue_raw_ops(osd_num_t peer_osd);
 };

src/cluster_client_list.cpp

@@ -36,6 +36,7 @@ struct inode_list_t
     inode_t inode = 0;
     int done_pgs = 0;
     int want = 0;
+    std::vector<osd_num_t> inactive_osds;
     std::vector<inode_list_pg_t*> pgs;
     std::function<void(inode_list_t* lst, std::set<object_id>&& objects, pg_num_t pg_num, osd_num_t primary_osd, int status)> callback;
 };
@@ -60,6 +61,7 @@ inode_list_t* cluster_client_t::list_inode_start(inode_t inode,
     lst->inode = inode;
     lst->callback = callback;
     auto pool_cfg = st_cli.pool_config[pool_id];
+    std::set<osd_num_t> inactive_osd_set;
     for (auto & pg_item: pool_cfg.pg_config)
     {
         auto & pg = pg_item.second;
@@ -96,7 +98,7 @@ inode_list_t* cluster_client_t::list_inode_start(inode_t inode,
             }
             for (auto & hist_item: pg.target_history)
             {
-                for (auto pg_osd: hist_item.osd_set)
+                for (auto pg_osd: hist_item)
                 {
                     if (pg_osd != 0)
                     {
@@ -114,6 +116,10 @@ inode_list_t* cluster_client_t::list_inode_start(inode_t inode,
                         .sent = false,
                     });
                 }
+                else
+                {
+                    inactive_osd_set.insert(peer_osd);
+                }
             }
         }
         else
@@ -135,6 +141,7 @@ inode_list_t* cluster_client_t::list_inode_start(inode_t inode,
     {
         lst->pgs[i]->pos = i;
     }
+    lst->inactive_osds.insert(lst->inactive_osds.end(), inactive_osd_set.begin(), inactive_osd_set.end());
     lists.push_back(lst);
     return lst;
 }
@@ -144,6 +151,11 @@ int cluster_client_t::list_pg_count(inode_list_t *lst)
     return lst->pgs.size();
 }
 
+const std::vector<osd_num_t> & cluster_client_t::list_inode_get_inactive_osds(inode_list_t *lst)
+{
+    return lst->inactive_osds;
+}
+
 void cluster_client_t::list_inode_next(inode_list_t *lst, int next_pgs)
 {
     if (next_pgs >= 0)

src/disk_tool_prepare.cpp

@@ -621,6 +621,11 @@ int disk_tool_t::prepare(std::vector<std::string> devices)
                 }
                 // Treat all disks as SSDs if not in the hybrid mode
                 prepare_one(options, hybrid && dev.is_hdd ? 1 : 0);
+                if (hybrid)
+                {
+                    options.erase("journal_device");
+                    options.erase("meta_device");
+                }
             }
         }
     }

src/disk_tool_utils.cpp

@@ -55,23 +55,6 @@ std::string realpath_str(std::string path, bool nofail)
     return rp;
 }
 
-std::string read_all_fd(int fd)
-{
-    int res_size = 0;
-    std::string res;
-    while (1)
-    {
-        res.resize(res_size+1024);
-        int r = read(fd, (char*)res.data()+res_size, res.size()-res_size);
-        if (r > 0)
-            res_size += r;
-        else if (!r || errno != EAGAIN && errno != EINTR)
-            break;
-    }
-    res.resize(res_size);
-    return res;
-}
-
 std::string read_file(std::string file, bool allow_enoent)
 {
     std::string res;

src/epoll_manager.cpp

@@ -54,6 +54,13 @@ void epoll_manager_t::set_fd_handler(int fd, bool wr, std::function<void(int, in
         ev.events = (wr ? EPOLLOUT : 0) | EPOLLIN | EPOLLRDHUP | EPOLLET;
         if (epoll_ctl(epoll_fd, exists ? EPOLL_CTL_MOD : EPOLL_CTL_ADD, fd, &ev) < 0)
         {
+            if (errno == ENOENT)
+            {
+                // The FD is probably already closed
+                epoll_ctl(epoll_fd, EPOLL_CTL_DEL, fd, NULL);
+                epoll_handlers.erase(fd);
+                return;
+            }
             throw std::runtime_error(std::string("epoll_ctl: ") + strerror(errno));
         }
         epoll_handlers[fd] = handler;

src/etcd_state_client.cpp

@@ -7,8 +7,8 @@
 #ifndef __MOCK__
 #include "addr_util.h"
 #include "http_client.h"
-#include "str_util.h"
 #endif
+#include "str_util.h"
 
 etcd_state_client_t::~etcd_state_client_t()
 {
@@ -777,6 +777,10 @@ void etcd_state_client_t::parse_state(const etcd_kv_t & kv)
                 fprintf(stderr, "Pool %u has invalid bitmap_granularity (must divide block_size), skipping pool\n", pool_id);
                 continue;
             }
+            // Scrub Interval
+            pc.scrub_interval = parse_time(pool_item.second["scrub_interval"].string_value());
+            if (!pc.scrub_interval)
+                pc.scrub_interval = 0;
             // Immediate Commit Mode
             pc.immediate_commit = pool_item.second["immediate_commit"].is_string()
                 ? (pool_item.second["immediate_commit"].string_value() == "all"
@@ -902,32 +906,9 @@ void etcd_state_client_t::parse_state(const etcd_kv_t & kv)
                             history_set.insert(it, pg_osd_num);
                     }
                 }
-                pg_history_set_t epoch_set = { .osd_set = history_set };
-                auto it = std::lower_bound(pg_cfg.target_history.begin(), pg_cfg.target_history.end(), epoch_set);
-                if (it == pg_cfg.target_history.end() || *it != epoch_set)
-                    pg_cfg.target_history.insert(it, epoch_set);
-            }
-            // Newer format with epochs
-            for (auto hist_item: value["osd_set_epochs"].array_items())
-            {
-                pg_history_set_t history_set;
-                history_set.min_epoch = hist_item["min_epoch"].uint64_value();
-                history_set.max_epoch = hist_item["max_epoch"].uint64_value();
-                if (history_set.max_epoch < history_set.min_epoch)
-                {
-                    history_set.max_epoch = 0;
-                    history_set.min_epoch = 0;
-                }
-                for (auto pg_osd: hist_item["osd_set"].array_items())
-                {
-                    history_set.osd_set.push_back(pg_osd.uint64_value());
-                }
-                if (history_set.max_epoch || history_set.osd_set.size())
-                {
-                    auto it = std::lower_bound(pg_cfg.target_history.begin(), pg_cfg.target_history.end(), history_set);
-                    if (it == pg_cfg.target_history.end() || *it != history_set)
-                        pg_cfg.target_history.insert(it, history_set);
-                }
+                auto it = std::lower_bound(pg_cfg.target_history.begin(), pg_cfg.target_history.end(), history_set);
+                if (it == pg_cfg.target_history.end() || *it != history_set)
+                    pg_cfg.target_history.insert(it, history_set);
             }
             // Include these additional OSDs when peering the PG
             for (auto pg_osd: value["all_peers"].array_items())
@@ -942,6 +923,8 @@ void etcd_state_client_t::parse_state(const etcd_kv_t & kv)
             }
             // Read epoch
             pg_cfg.epoch = value["epoch"].uint64_value();
+            // Next scrub timestamp (0 or empty = scrub is not needed)
+            pg_cfg.next_scrub = value["next_scrub"].uint64_value();
             if (on_change_pg_history_hook != NULL)
             {
                 on_change_pg_history_hook(pool_id, pg_num);

src/etcd_state_client.h

@@ -33,12 +33,13 @@ struct pg_config_t
     bool exists;
     osd_num_t primary;
     std::vector<osd_num_t> target_set;
-    std::vector<pg_history_set_t> target_history;
+    std::vector<std::vector<osd_num_t>> target_history;
     std::vector<osd_num_t> all_peers;
     bool pause;
     osd_num_t cur_primary;
     int cur_state;
     uint64_t epoch;
+    uint64_t next_scrub;
 };
 
 struct pool_config_t
@@ -55,6 +56,7 @@ struct pool_config_t
     uint64_t max_osd_combinations;
     uint64_t pg_stripe_size;
     std::map<pg_num_t, pg_config_t> pg_config;
+    uint64_t scrub_interval;
 };
 
 struct inode_config_t

src/messenger.cpp

@@ -251,6 +251,10 @@ void osd_messenger_t::try_connect_peer_addr(osd_num_t peer_osd, const char *peer
         return;
     }
     clients[peer_fd] = new osd_client_t();
+    if (log_level > 0)
+    {
+        fprintf(stderr, "Connecting to OSD %lu at %s:%d (client %d)\n", peer_osd, peer_host, peer_port, peer_fd);
+    }
     clients[peer_fd]->peer_addr = addr;
     clients[peer_fd]->peer_port = peer_port;
     clients[peer_fd]->peer_fd = peer_fd;
@@ -313,7 +317,10 @@ void osd_messenger_t::handle_peer_epoll(int peer_fd, int epoll_events)
     if (epoll_events & EPOLLRDHUP)
     {
         // Stop client
-        fprintf(stderr, "[OSD %lu] client %d disconnected\n", this->osd_num, peer_fd);
+        if (log_level > 0)
+        {
+            fprintf(stderr, "[OSD %lu] client %d disconnected\n", this->osd_num, peer_fd);
+        }
         stop_client(peer_fd, true);
     }
     else if (epoll_events & EPOLLIN)

src/messenger.h

@@ -50,7 +50,7 @@ struct osd_client_t
 
     sockaddr_storage peer_addr;
     int peer_port;
-    int peer_fd;
+    int peer_fd = -1;
     int peer_state;
     int connect_timeout_id = -1;
     int ping_time_remaining = 0;
@@ -87,11 +87,7 @@ struct osd_client_t
     std::vector<iovec> send_list, next_send_list;
     std::vector<msgr_sendp_t> outbox, next_outbox;
 
-    ~osd_client_t()
-    {
-        free(in_buf);
-        in_buf = NULL;
-    }
+    ~osd_client_t();
 };
 
 struct osd_wanted_peer_t
@@ -177,6 +173,8 @@ public:
     bool connect_rdma(int peer_fd, std::string rdma_address, uint64_t client_max_msg);
 #endif
 
+    void measure_exec(osd_op_t *cur_op);
+
 protected:
     void try_connect_peer(uint64_t osd_num);
     void try_connect_peer_addr(osd_num_t peer_osd, const char *peer_host, int peer_port);
@@ -188,7 +186,6 @@ protected:
     void cancel_op(osd_op_t *op);
 
     bool try_send(osd_client_t *cl);
-    void measure_exec(osd_op_t *cur_op);
     void handle_send(int result, osd_client_t *cl);
 
     bool handle_read(int result, osd_client_t *cl);

src/msgr_op.cpp

@@ -9,6 +9,10 @@ osd_op_t::~osd_op_t()
 {
     assert(!bs_op);
     assert(!op_data);
+    if (bitmap_buf)
+    {
+        free(bitmap_buf);
+    }
     if (rmw_buf)
     {
         free(rmw_buf);

src/msgr_op.h

@@ -165,6 +165,7 @@ struct osd_op_t
     void *bitmap = NULL;
     unsigned bitmap_len = 0;
     unsigned bmp_data = 0;
+    void *bitmap_buf = NULL;
     void *rmw_buf = NULL;
     osd_primary_op_data_t* op_data = NULL;
     std::function<void(osd_op_t*)> callback;

src/msgr_receive.cpp

@@ -103,7 +103,10 @@ bool osd_messenger_t::handle_read(int result, osd_client_t *cl)
             cl->recv_list.eat(result);
             if (cl->recv_list.done >= cl->recv_list.count)
             {
-                handle_finished_read(cl);
+                if (!handle_finished_read(cl))
+                {
+                    goto fin;
+                }
             }
         }
         if (result >= cl->read_iov.iov_len)
@@ -248,10 +251,6 @@ void osd_messenger_t::handle_op_hdr(osd_client_t *cl)
         }
         cl->read_remaining = cur_op->req.sec_read_bmp.len;
     }
-    else if (cur_op->req.hdr.opcode == OSD_OP_READ)
-    {
-        cl->read_remaining = 0;
-    }
     else if (cur_op->req.hdr.opcode == OSD_OP_WRITE)
     {
         if (cur_op->req.rw.len > 0)
@@ -271,6 +270,12 @@ void osd_messenger_t::handle_op_hdr(osd_client_t *cl)
         }
         cl->read_remaining = cur_op->req.show_conf.json_len;
     }
+    /*else if (cur_op->req.hdr.opcode == OSD_OP_READ ||
+        cur_op->req.hdr.opcode == OSD_OP_SCRUB ||
+        cur_op->req.hdr.opcode == OSD_OP_DESCRIBE)
+    {
+        cl->read_remaining = 0;
+    }*/
     if (cl->read_remaining > 0)
     {
         // Read data
@@ -364,6 +369,16 @@ bool osd_messenger_t::handle_reply_hdr(osd_client_t *cl)
         op->buf = malloc_or_die(op->reply.hdr.retval);
         cl->recv_list.push_back(op->buf, op->reply.hdr.retval);
     }
+    else if (op->reply.hdr.opcode == OSD_OP_DESCRIBE && op->reply.describe.result_bytes > 0)
+    {
+        delete cl->read_op;
+        cl->read_op = op;
+        cl->read_state = CL_READ_REPLY_DATA;
+        cl->read_remaining = op->reply.describe.result_bytes;
+        free(op->buf);
+        op->buf = malloc_or_die(op->reply.describe.result_bytes);
+        cl->recv_list.push_back(op->buf, op->reply.describe.result_bytes);
+    }
     else
     {
 reuse:

src/msgr_send.cpp

@@ -73,7 +73,8 @@ void osd_messenger_t::outbox_push(osd_op_t *cur_op)
         ? (cur_op->req.hdr.opcode == OSD_OP_READ ||
         cur_op->req.hdr.opcode == OSD_OP_SEC_READ ||
         cur_op->req.hdr.opcode == OSD_OP_SEC_LIST ||
-        cur_op->req.hdr.opcode == OSD_OP_SHOW_CONFIG)
+        cur_op->req.hdr.opcode == OSD_OP_SHOW_CONFIG ||
+        cur_op->req.hdr.opcode == OSD_OP_DESCRIBE)
         : (cur_op->req.hdr.opcode == OSD_OP_WRITE ||
         cur_op->req.hdr.opcode == OSD_OP_SEC_WRITE ||
         cur_op->req.hdr.opcode == OSD_OP_SEC_WRITE_STABLE ||
@@ -83,9 +84,12 @@ void osd_messenger_t::outbox_push(osd_op_t *cur_op)
     {
         for (int i = 0; i < cur_op->iov.count; i++)
         {
-            assert(cur_op->iov.buf[i].iov_base);
-            to_send_list.push_back(cur_op->iov.buf[i]);
-            to_outbox.push_back((msgr_sendp_t){ .op = cur_op, .flags = 0 });
+            if (cur_op->iov.buf[i].iov_len > 0)
+            {
+                assert(cur_op->iov.buf[i].iov_base);
+                to_send_list.push_back(cur_op->iov.buf[i]);
+                to_outbox.push_back((msgr_sendp_t){ .op = cur_op, .flags = 0 });
+            }
         }
     }
     if (cur_op->req.hdr.opcode == OSD_OP_SEC_READ_BMP)
@@ -149,8 +153,10 @@ void osd_messenger_t::measure_exec(osd_op_t *cur_op)
         (cur_op->tv_end.tv_nsec - cur_op->tv_begin.tv_nsec)/1000
     );
     if (cur_op->req.hdr.opcode == OSD_OP_READ ||
-        cur_op->req.hdr.opcode == OSD_OP_WRITE)
+        cur_op->req.hdr.opcode == OSD_OP_WRITE ||
+        cur_op->req.hdr.opcode == OSD_OP_SCRUB)
     {
+        // req.rw.len is internally set to the full object size for scrubs
         stats.op_stat_bytes[cur_op->req.hdr.opcode] += cur_op->req.rw.len;
     }
     else if (cur_op->req.hdr.opcode == OSD_OP_SEC_READ ||