| #! /bin/bash |
| # FSQA Test No. 078 |
| # |
| # Regression test for a btrfs issue where creation of readonly snapshots caused |
| # the filesystem to get into an inconsistent state. |
| # |
| # This regression was introduced in the 3.17 kernel and fixed by reverting the |
| # following linux kernel commit: |
| # |
| # Btrfs: race free update of commit root for ro snapshots |
| # 9c3b306e1c9e6be4be09e99a8fe2227d1005effc |
| # |
| #----------------------------------------------------------------------- |
| # |
| # Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved. |
| # Author: Filipe Manana <fdmanana@suse.com> |
| # |
| # 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" |
| |
| tmp=`mktemp -d` |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| rm -fr $tmp |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| _supported_os Linux |
| _require_scratch |
| |
| rm -f $seqres.full |
| |
| workout() |
| { |
| ops=$1 |
| procs=$2 |
| num_snapshots=$3 |
| |
| _scratch_mkfs >> $seqres.full 2>&1 |
| _scratch_mount |
| |
| snapshot_cmd="$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT" |
| snapshot_cmd="$snapshot_cmd $SCRATCH_MNT/snap_\`date +'%H_%M_%S_%N'\`" |
| run_check $FSSTRESS_PROG -p $procs \ |
| -x "$snapshot_cmd" -X $num_snapshots -d $SCRATCH_MNT -n $ops |
| } |
| |
| ops=8000 |
| procs=4 |
| snapshots=100 |
| workout $ops $procs $snapshots |
| |
| # The fstests framework runs a file system check against the scratch device |
| # automatically when a test case finishes (if the test calls _require_scratch). |
| # That filesystem check (btrfsck, btrfs.fsck) failed reporting several fs |
| # inconsistencies. Therefore there's no need to call _check_scratch_fs here. |
| |
| echo "Silence is golden" |
| status=0 |
| exit |