| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2020 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # FS QA Test 230 |
| # |
| # Test if btrfs qgroup would crash if we're modifying the fs |
| # after exceeding the limit |
| # |
| 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 |
| |
| _supported_fs btrfs |
| |
| # Need at least 2GiB |
| _require_scratch_size $((2 * 1024 * 1024)) |
| _scratch_mkfs > /dev/null 2>&1 |
| _scratch_mount |
| |
| _pwrite_byte 0xcd 0 1G $SCRATCH_MNT/file >> $seqres.full |
| # Make sure the data reach disk so later qgroup scan can see it |
| sync |
| |
| $BTRFS_UTIL_PROG quota enable $SCRATCH_MNT |
| $BTRFS_UTIL_PROG quota rescan -w $SCRATCH_MNT >> $seqres.full |
| |
| # Set the limit to just 512MiB, which is way below the existing usage |
| $BTRFS_UTIL_PROG qgroup limit 512M 0/5 $SCRATCH_MNT |
| |
| # Touch above file, if kernel not patched, it will trigger an ASSERT() |
| # |
| # Even for patched kernel, we will still get EDQUOT error, but that |
| # is expected behavior. |
| touch $SCRATCH_MNT/file 2>&1 | _filter_scratch |
| |
| # success, all done |
| status=0 |
| exit |