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https://github.com/linux-apfs/apfstests.git
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David Disseldorp
20bde4fef1
src/cloner.c is no longer Btrfs specific, so use a generic name. Signed-off-by: David Disseldorp <ddiss@suse.de> Acked-by: Steve French <smfrench@gmail.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
146 lines
4.5 KiB
Bash
Executable File
146 lines
4.5 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. btrfs/056
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#
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# Regression test for btrfs ioctl clone operation + fsync + log recovery.
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# The issue was that doing an fsync after cloning into a file didn't gave any
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# persistence guarantees as it should. What happened was that the in memory
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# metadata (extent maps) weren't updated, which made the fsync code not able
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# to detect that file data has been changed.
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#
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# This issue is fixed by the following linux kernel btrfs patch:
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#
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# Btrfs: make fsync work after cloning into a file
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2014 Filipe Manana. All Rights Reserved.
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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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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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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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. ./common/dmflakey
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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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_require_cloner
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_require_btrfs_fs_feature "no_holes"
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_require_btrfs_mkfs_feature "no-holes"
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_require_dm_flakey
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_need_to_be_root
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rm -f $seqres.full
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test_btrfs_clone_fsync_log_recover()
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{
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_scratch_mkfs "$1" >/dev/null 2>&1
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_init_flakey
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SAVE_MOUNT_OPTIONS="$MOUNT_OPTIONS"
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MOUNT_OPTIONS="$MOUNT_OPTIONS $2"
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_mount_flakey
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# Create a file with 4 extents and 1 hole, all with a size of 8Kb each.
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# The hole is in the range [16384, 24576[.
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$XFS_IO_PROG -s -f -c "pwrite -S 0x01 -b 8192 0 8192" \
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-c "pwrite -S 0x02 -b 8192 8192 8192" \
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-c "pwrite -S 0x04 -b 8192 24576 8192" \
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-c "pwrite -S 0x05 -b 8192 32768 8192" \
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$SCRATCH_MNT/foo | _filter_xfs_io
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# Clone destination file, 1 extent of 96kb.
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$XFS_IO_PROG -f -c "pwrite -S 0xff -b 98304 0 98304" -c "fsync" \
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$SCRATCH_MNT/bar | _filter_xfs_io
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# Clone second half of the 2nd extent, the 8kb hole, the 3rd extent
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# and the first half of the 4th extent into file bar.
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$CLONER_PROG -s 12288 -d 0 -l 24576 $SCRATCH_MNT/foo $SCRATCH_MNT/bar
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$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/bar
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# Test small files too consisting of 1 inline extent
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$XFS_IO_PROG -f -c "pwrite -S 0x00 -b 3500 0 3500" -c "fsync" \
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$SCRATCH_MNT/foo2 | _filter_xfs_io
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$XFS_IO_PROG -f -c "pwrite -S 0xcc -b 1000 0 1000" -c "fsync" \
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$SCRATCH_MNT/bar2 | _filter_xfs_io
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# Clone the entire foo2 file into bar2, overwriting all data in bar2
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# and increasing its size.
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$CLONER_PROG -s 0 -d 0 -l 3500 $SCRATCH_MNT/foo2 $SCRATCH_MNT/bar2
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$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/bar2
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_load_flakey_table $FLAKEY_DROP_WRITES
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_unmount_flakey
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# Verify that there are no consistency errors.
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_check_scratch_fs $FLAKEY_DEV
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_load_flakey_table $FLAKEY_ALLOW_WRITES
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_mount_flakey
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# Verify the cloned range was persisted by fsync and the log recovery
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# code did its work well.
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echo "Verifying file bar content"
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od -t x1 $SCRATCH_MNT/bar
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echo "Verifying file bar2 content"
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od -t x1 $SCRATCH_MNT/bar2
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_unmount_flakey
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# Verify that there are no consistency errors.
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_check_scratch_fs $FLAKEY_DEV
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_cleanup_flakey
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MOUNT_OPTIONS="$SAVE_MOUNT_OPTIONS"
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}
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# Regardless of the NO_HOLES feature being enabled or not, the test results
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# should be exactly the same for both cases.
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echo "Testing without the NO_HOLES feature"
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# As of btrfs-progs 3.14.x, the no-holes feature isn't enabled by default.
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# But explicitly disable it at mkfs time as it might be enabled by default
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# in future versions.
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test_btrfs_clone_fsync_log_recover "-O ^no-holes"
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echo "Testing without the NO_HOLES feature and compression (lzo)"
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test_btrfs_clone_fsync_log_recover "-O ^no-holes" "-o compress-force=lzo"
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echo "Testing with the NO_HOLES feature enabled"
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test_btrfs_clone_fsync_log_recover "-O no-holes"
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echo "Testing with the NO_HOLES feature enabled and compression (lzo)"
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test_btrfs_clone_fsync_log_recover "-O no-holes" "-o compress-force=lzo"
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status=0
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exit
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