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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2019 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test 180
#
# Test if btrfs hits EDQUOT without reclaiming already freed extents when quota
# is enabled.
#
# This bug is going to be fxied by a patch for kernel titled
# "btrfs: qgroup: Make qgroup async transaction commit more aggressive"
#
. ./common/preamble
_begin_fstest auto quick qgroup limit prealloc
. ./common/filter
_supported_fs btrfs
_require_scratch
_require_xfs_io_command falloc
_scratch_mkfs > /dev/null
_scratch_mount
$BTRFS_UTIL_PROG quota enable "$SCRATCH_MNT" > /dev/null
_qgroup_rescan "$SCRATCH_MNT" > /dev/null
$BTRFS_UTIL_PROG qgroup limit -e 1G "$SCRATCH_MNT"
$XFS_IO_PROG -f -c "falloc 0 900M" "$SCRATCH_MNT/padding"
# Commit transaction to reflect the quota usage
sync
rm -f "$SCRATCH_MNT/padding"
# Without the kernel fix, this will trigger EDQUOT.
_pwrite_byte 0xcd 0 512M "$SCRATCH_MNT/real_file" | _filter_xfs_io
# success, all done
status=0
exit
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