mirror of
https://github.com/linux-apfs/apfstests.git
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Theodore Ts'o
56ff01f471
The check script requires that it be run as root, so adding individualized checks for this in each teat is not needed. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
103 lines
3.2 KiB
Bash
Executable File
103 lines
3.2 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 325
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#
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# Make some pages/extents of a file dirty, do a ranged fsync that covers
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# only some of the dirty pages/extents, and then do a regular fsync (or
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# another ranged fsync that covers the remaining dirty pages/extents).
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# Verify after that all extents were persisted.
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#
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# This test is motivated by a btrfs issue where the first ranged fsync
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# would prevent the following fsync from persisting the remaining dirty
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# pages/extents. This was fixed by the following btrfs kernel patch:
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#
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# Btrfs: fix fsync data loss after a ranged fsync
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#
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#-----------------------------------------------------------------------
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# Copyright (C) 2014 SUSE Linux Products GmbH. All Rights Reserved.
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# Author: Filipe Manana <fdmanana@suse.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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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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here=`pwd`
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_flakey
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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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_scratch
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_require_dm_target flakey
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_require_metadata_journaling $SCRATCH_DEV
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rm -f $seqres.full
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_scratch_mkfs >> $seqres.full 2>&1
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_init_flakey
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_mount_flakey
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# Create the file first.
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$XFS_IO_PROG -f -c "pwrite -S 0xff 0 256K" $SCRATCH_MNT/foo | _filter_xfs_io
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# Now sync the file data to disk using 'sync' and not an fsync. This is because
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# in btrfs the first fsync clears the btrfs inode full fsync flag, which must
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# be set when the first msync below happens in order to trigger the bug.
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sync
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# Now update the first 4Kb and the last 4Kb of the file, using memory mapped IO
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# because an msync(), since the linux kernel commit
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# 7fc34a62ca4434a79c68e23e70ed26111b7a4cf8, invokes a ranged fsync.
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#
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# After those writes, msync a range covering the first 4Kb and then after
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# perform a msync with a range covering the last 4Kb of the file.
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# This second msync() used to be a no-op for that btrfs bug (and the first fsync
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# didn't log the last 4Kb extent as expected too).
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$XFS_IO_PROG \
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-c "mmap -w 0 256K" \
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-c "mwrite -S 0xaa 0 4K" \
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-c "mwrite -S 0xbb 252K 4K" \
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-c "msync -s 0K 64K" \
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-c "msync -s 192K 64K" \
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-c "munmap" \
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$SCRATCH_MNT/foo | _filter_xfs_io
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echo "File content before crash/reboot:"
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od -t x1 $SCRATCH_MNT/foo
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_flakey_drop_and_remount
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echo "File content after crash/reboot and fs mount:"
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od -t x1 $SCRATCH_MNT/foo
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_unmount_flakey
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status=0
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exit
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