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Filipe Manana
1879a65466
Run fsstress, fsync every file and directory, simulate a power failure and
then verify that all files and directories exist, with the same data and
metadata they had before the power failure.
This test has found already 2 bugs in btrfs, that caused mtime and ctime of
directories not being preserved after replaying the log/journal and loss
of a directory's attributes (such a UID and GID) after replaying the log.
The patches that fix the btrfs issues are titled:
"Btrfs: fix wrong ctime and mtime of a directory after log replay"
"Btrfs: fix fsync not persisting changed attributes of a directory"
Running this test 1000 times:
- on xfs, no issues were found
- on ext4 it has resulted in about a dozen journal checksum errors (on a
5.0 kernel) that resulted in failure to mount the filesystem after the
simulated power failure with dmflakey, which produces the following
error in dmesg/syslog:
[Mon May 13 12:51:37 2019] JBD2: journal checksum error
[Mon May 13 12:51:37 2019] EXT4-fs (dm-0): error loading journal
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
74 lines
1.9 KiB
Bash
Executable File
74 lines
1.9 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2019 SUSE Linux Products GmbH. All Rights Reserved.
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#
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# FS QA Test No. 547
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#
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# Run fsstress, fsync every file and directory, simulate a power failure and
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# then verify that all files and directories exist, with the same data and
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# metadata they had before the power failure.
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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=/tmp/$$
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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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_cleanup_flakey
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cd /
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rm -f $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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. ./common/dmflakey
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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_test
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_require_scratch
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_require_fssum
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_require_dm_target flakey
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rm -f $seqres.full
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fssum_files_dir=$TEST_DIR/generic-test-$seq
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rm -fr $fssum_files_dir
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mkdir $fssum_files_dir
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_scratch_mkfs >>$seqres.full 2>&1
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_require_metadata_journaling $SCRATCH_DEV
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_init_flakey
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_mount_flakey
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mkdir $SCRATCH_MNT/test
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args=`_scale_fsstress_args -p 4 -n 100 $FSSTRESS_AVOID -d $SCRATCH_MNT/test`
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args="$args -f mknod=0 -f symlink=0"
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echo "Running fsstress with arguments: $args" >>$seqres.full
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$FSSTRESS_PROG $args >>$seqres.full
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# Fsync every file and directory.
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find $SCRATCH_MNT/test \( -type f -o -type d \) -exec $XFS_IO_PROG -c fsync {} \;
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# Compute a digest of the filesystem (using the test directory only, to skip
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# fs specific directories such as "lost+found" on ext4 for example).
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$FSSUM_PROG -A -f -w $fssum_files_dir/fs_digest $SCRATCH_MNT/test
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# Simulate a power failure and mount the filesystem to check that all files and
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# directories exist and have all data and metadata preserved.
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_flakey_drop_and_remount
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# Compute a new digest and compare it to the one we created previously, they
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# must match.
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$FSSUM_PROG -r $fssum_files_dir/fs_digest $SCRATCH_MNT/test
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_unmount_flakey
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status=0
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exit
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