2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved.
7 # Regression test for a btrfs issue where creation of readonly snapshots caused
8 # the filesystem to get into an inconsistent state.
10 # This regression was introduced in the 3.17 kernel and fixed by reverting the
11 # following linux kernel commit:
13 # Btrfs: race free update of commit root for ro snapshots
14 # 9c3b306e1c9e6be4be09e99a8fe2227d1005effc
17 seqres=$RESULT_DIR/$seq
18 echo "QA output created by $seq"
21 status=1 # failure is the default!
22 trap "_cleanup; exit \$status" 0 1 2 3 15
29 # get standard environment, filters and checks
33 # real QA test starts here
45 _scratch_mkfs >> $seqres.full 2>&1
48 snapshot_cmd="$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT"
49 snapshot_cmd="$snapshot_cmd $SCRATCH_MNT/snap_\`date +'%H_%M_%S_%N'\`"
50 run_check $FSSTRESS_PROG -p $procs \
51 -x "$snapshot_cmd" -X $num_snapshots -d $SCRATCH_MNT -n $ops
57 workout $ops $procs $snapshots
59 # The fstests framework runs a file system check against the scratch device
60 # automatically when a test case finishes (if the test calls _require_scratch).
61 # That filesystem check (btrfsck, btrfs.fsck) failed reporting several fs
62 # inconsistencies. Therefore there's no need to call _check_scratch_fs here.
64 echo "Silence is golden"