2014-11-10 13:03:43 +11:00
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#! /bin/bash
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2018-06-09 11:35:50 +10:00
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved.
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#
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2014-11-10 13:03:43 +11:00
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# FSQA Test No. 078
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#
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# Regression test for a btrfs issue where creation of readonly snapshots caused
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# the filesystem to get into an inconsistent state.
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#
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# This regression was introduced in the 3.17 kernel and fixed by reverting the
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# following linux kernel commit:
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#
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# Btrfs: race free update of commit root for ro snapshots
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# 9c3b306e1c9e6be4be09e99a8fe2227d1005effc
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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tmp=`mktemp -d`
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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rm -fr $tmp
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch
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rm -f $seqres.full
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workout()
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{
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ops=$1
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procs=$2
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num_snapshots=$3
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_scratch_mkfs >> $seqres.full 2>&1
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_scratch_mount
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snapshot_cmd="$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT"
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snapshot_cmd="$snapshot_cmd $SCRATCH_MNT/snap_\`date +'%H_%M_%S_%N'\`"
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run_check $FSSTRESS_PROG -p $procs \
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-x "$snapshot_cmd" -X $num_snapshots -d $SCRATCH_MNT -n $ops
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}
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ops=8000
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procs=4
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snapshots=100
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workout $ops $procs $snapshots
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# The fstests framework runs a file system check against the scratch device
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# automatically when a test case finishes (if the test calls _require_scratch).
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# That filesystem check (btrfsck, btrfs.fsck) failed reporting several fs
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# inconsistencies. Therefore there's no need to call _check_scratch_fs here.
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echo "Silence is golden"
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status=0
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exit
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