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apfstests/tests/btrfs/099
T
Darrick J. Wong a860a167d8 common: kill _supported_os
fstests only supports Linux, so get rid of this unnecessary predicate.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
2020-09-21 01:16:50 +08:00

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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Fujitsu. All Rights Reserved.
#
# 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
#
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 $tmp.*
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
# real QA test starts here
_supported_fs btrfs
_require_scratch
_require_btrfs_qgroup_report
# Use big blocksize to ensure there is still enough space left for metadata
# space reserve.
BLOCKSIZE=$(( 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