| #! /bin/bash |
| # FS QA Test 099 |
| # |
| # Check for qgroup reserved space leaks caused by re-writing dirty ranges |
| # This bug has been present in btrfs qgroup for a long time |
| # |
| #----------------------------------------------------------------------- |
| # Copyright (c) 2015 Fujitsu. All Rights Reserved. |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public License as |
| # published by the Free Software Foundation. |
| # |
| # This program is distributed in the hope that it would be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write the Free Software Foundation, |
| # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| #----------------------------------------------------------------------- |
| # |
| |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| |
| _supported_fs btrfs |
| _supported_os Linux |
| _require_scratch |
| _require_btrfs_qgroup_report |
| |
| # Use big blocksize to ensure there is still enough space left for metadata |
| # space reserve. |
| BLOCKSIZE=$(( 2 * 1024 * 1024 )) # 2M block size |
| FILESIZE=$(( 128 * 1024 * 1024 )) # 128M file size |
| |
| rm -f $seqres.full |
| |
| _scratch_mkfs >> $seqres.full 2>&1 |
| _scratch_mount |
| _require_fs_space $SCRATCH_MNT $(($FILESIZE * 2 / 1024)) |
| |
| _run_btrfs_util_prog quota enable $SCRATCH_MNT |
| _run_btrfs_util_prog qgroup limit $FILESIZE 5 $SCRATCH_MNT |
| |
| # loop 5 times without sync to ensure reserved space leak will happen |
| for i in `seq 1 5`; do |
| # Use 1/4 of the file size, to ensure even commit is trigger by |
| # dirty page threshold or commit interval, we should still be |
| # able to continue write |
| $XFS_IO_PROG -f -c "pwrite -b $BLOCKSIZE 0 $(($FILESIZE / 4))" \ |
| $SCRATCH_MNT/foo | _filter_xfs_io |
| done |
| |
| # Sync to make sure all the dirty pages are written to disk, which should |
| # free all the reserved space |
| sync |
| |
| # remove the file and sync, to ensure all quota space freed |
| rm $SCRATCH_MNT/foo |
| sync |
| |
| # We should be able to write $FILESIZE - $BLOCKSIZE data now |
| $XFS_IO_PROG -f -c "pwrite -b $BLOCKSIZE 0 $(($FILESIZE - $BLOCKSIZE))" \ |
| $SCRATCH_MNT/foo | _filter_xfs_io |
| |
| # success, all done |
| status=0 |
| exit |