4 # Regression test for a btrfs issue where creation of readonly snapshots caused
5 # the filesystem to get into an inconsistent state.
7 # This regression was introduced in the 3.17 kernel and fixed by reverting the
8 # following linux kernel commit:
10 # Btrfs: race free update of commit root for ro snapshots
11 # 9c3b306e1c9e6be4be09e99a8fe2227d1005effc
13 #-----------------------------------------------------------------------
15 # Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved.
16 # Author: Filipe Manana <fdmanana@suse.com>
18 # This program is free software; you can redistribute it and/or
19 # modify it under the terms of the GNU General Public License as
20 # published by the Free Software Foundation.
22 # This program is distributed in the hope that it would be useful,
23 # but WITHOUT ANY WARRANTY; without even the implied warranty of
24 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 # GNU General Public License for more details.
27 # You should have received a copy of the GNU General Public License
28 # along with this program; if not, write the Free Software Foundation,
29 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
30 #-----------------------------------------------------------------------
34 seqres=$RESULT_DIR/$seq
35 echo "QA output created by $seq"
38 status=1 # failure is the default!
39 trap "_cleanup; exit \$status" 0 1 2 3 15
46 # get standard environment, filters and checks
50 # real QA test starts here
63 _scratch_mkfs >> $seqres.full 2>&1
66 snapshot_cmd="$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT"
67 snapshot_cmd="$snapshot_cmd $SCRATCH_MNT/snap_\`date +'%H_%M_%S_%N'\`"
68 run_check $FSSTRESS_PROG -p $procs \
69 -x "$snapshot_cmd" -X $num_snapshots -d $SCRATCH_MNT -n $ops
75 workout $ops $procs $snapshots
77 # The fstests framework runs a file system check against the scratch device
78 # automatically when a test case finishes (if the test calls _require_scratch).
79 # That filesystem check (btrfsck, btrfs.fsck) failed reporting several fs
80 # inconsistencies. Therefore there's no need to call _check_scratch_fs here.
82 echo "Silence is golden"