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CI: run ztest on compressed zpool

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When running ztest under the CI a common failure mode is for the
underlying filesystem to run out of available free space.  Since
the storage associated with a GitHub-hosted running is fixed, we
instead create a pool and use a compressed ZFS dataset to store
the ztest vdev files.  This significantly increases the available
capacity since the data written by ztest is highly compressible.
A compression ratio of over 40:1 is conservatively achieved using
the default lz4 compression.  Autotrimming is enabled to ensure
freed blocks are discarded from the backing cipool vdev file.

Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #17501
This commit is contained in:
Brian Behlendorf 2025-07-03 10:27:05 -07:00
parent 6c1130a730
commit f7698f47e8
1 changed files with 12 additions and 12 deletions
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24
.github/workflows/zloop.yml vendored
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@ -12,7 +12,8 @@ jobs:
zloop: zloop:
runs-on: ubuntu-24.04 runs-on: ubuntu-24.04
env: env:
TEST_DIR: /var/tmp/zloop WORK_DIR: /mnt/zloop
CORE_DIR: /mnt/zloop/cores
steps: steps:
- uses: actions/checkout@v4 - uses: actions/checkout@v4
with: with:
@ -40,38 +41,37 @@ jobs:
sudo modprobe zfs sudo modprobe zfs
- name: Tests - name: Tests
run: | run: |
sudo mkdir -p $TEST_DIR sudo truncate -s 256G /mnt/vdev
# run for 10 minutes or at most 6 iterations for a maximum runner sudo zpool create cipool -m $WORK_DIR -O compression=on -o autotrim=on /mnt/vdev
# time of 60 minutes. sudo /usr/share/zfs/zloop.sh -t 600 -I 6 -l -m 1 -c $CORE_DIR -f $WORK_DIR -- -T 120 -P 60
sudo /usr/share/zfs/zloop.sh -t 600 -I 6 -l -m 1 -- -T 120 -P 60
- name: Prepare artifacts - name: Prepare artifacts
if: failure() if: failure()
run: | run: |
sudo chmod +r -R $TEST_DIR/ sudo chmod +r -R $WORK_DIR/
- name: Ztest log - name: Ztest log
if: failure() if: failure()
run: | run: |
grep -B10 -A1000 'ASSERT' $TEST_DIR/*/ztest.out || tail -n 1000 $TEST_DIR/*/ztest.out grep -B10 -A1000 'ASSERT' $CORE_DIR/*/ztest.out || tail -n 1000 $CORE_DIR/*/ztest.out
- name: Gdb log - name: Gdb log
if: failure() if: failure()
run: | run: |
sed -n '/Backtraces (full)/q;p' $TEST_DIR/*/ztest.gdb sed -n '/Backtraces (full)/q;p' $CORE_DIR/*/ztest.gdb
- name: Zdb log - name: Zdb log
if: failure() if: failure()
run: | run: |
cat $TEST_DIR/*/ztest.zdb cat $CORE_DIR/*/ztest.zdb
- uses: actions/upload-artifact@v4 - uses: actions/upload-artifact@v4
if: failure() if: failure()
with: with:
name: Logs name: Logs
path: | path: |
/var/tmp/zloop/*/ /mnt/zloop/*/
!/var/tmp/zloop/*/vdev/ !/mnt/zloop/cores/*/vdev/
if-no-files-found: ignore if-no-files-found: ignore
- uses: actions/upload-artifact@v4 - uses: actions/upload-artifact@v4
if: failure() if: failure()
with: with:
name: Pool files name: Pool files
path: | path: |
/var/tmp/zloop/*/vdev/ /mnt/zloop/cores/*/vdev/
if-no-files-found: ignore if-no-files-found: ignore