| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Fujitsu. All Rights Reserved. |
| # |
| # FS QA Test 123 |
| # |
| # Test if btrfs leaks qgroup numbers for data extents |
| # |
| # Due to balance code is doing trick tree block swap, which doing |
| # non-standard extent reference update, qgroup can't handle it correctly, |
| # and leads to corrupted qgroup numbers. |
| # |
| 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 |
| |
| # remove previous $seqres.full before test |
| rm -f $seqres.full |
| |
| # real QA test starts here |
| |
| # Modify as appropriate. |
| _supported_fs btrfs |
| _require_scratch |
| _require_btrfs_qgroup_report |
| |
| _scratch_mkfs >/dev/null |
| # Need to use inline extents to fill metadata rapidly |
| _scratch_mount "-o max_inline=2048" |
| |
| # create 64K inlined metadata, which will ensure there is a 2-level |
| # metadata. Even for maximum nodesize(64K) |
| for i in $(seq 32); do |
| _pwrite_byte 0xcdcdcdcd 0 2k $SCRATCH_MNT/small_$i | _filter_xfs_io |
| done |
| |
| # then a large data write to make the quota corruption obvious enough |
| _pwrite_byte 0xcdcdcdcd 0 32m $SCRATCH_MNT/large | _filter_xfs_io |
| sync |
| |
| # enable quota and rescan to get correct number |
| _run_btrfs_util_prog quota enable $SCRATCH_MNT |
| _run_btrfs_util_prog quota rescan -w $SCRATCH_MNT |
| |
| # now balance data block groups to corrupt qgroup |
| _run_btrfs_balance_start -d $SCRATCH_MNT >> $seqres.full |
| |
| _scratch_unmount |
| # qgroup will be check at _check_scratch_fs() by fstest |
| |
| # success, all done |
| status=0 |
| exit |