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Filipe Manana
ddb4e4cfcc
Test several cases of cloning inline extents that used to lead to file corruption or data loss. These file corruption and data loss cases are fixed by the linux kernel patch titled: "Btrfs: fix file corruption and data loss after cloning inline extents" Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
200 lines
7.7 KiB
Bash
Executable File
200 lines
7.7 KiB
Bash
Executable File
#! /bin/bash
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# FSQA Test No. 112
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#
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# Test several cases of cloning inline extents that used to lead to file
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# corruption or data loss.
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#
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#-----------------------------------------------------------------------
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#
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# Copyright (C) 2015 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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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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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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# real QA test starts here
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_need_to_be_root
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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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rm -f $seqres.full
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test_cloning_inline_extents()
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{
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local mkfs_opts=$1
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local mount_opts=$2
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_scratch_mkfs $mkfs_opts >>$seqres.full 2>&1
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_scratch_mount $mount_opts
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# File bar, the source for all the following clone operations, consists
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# of a # single inline extent (50 bytes).
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$XFS_IO_PROG -f -c "pwrite -S 0xbb 0 50" $SCRATCH_MNT/bar \
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| _filter_xfs_io
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# Test cloning into a file with an extent (non-inlined) where the
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# destination offset overlaps that extent. It should not be possible to
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# clone the inline extent from file bar into this file.
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$XFS_IO_PROG -f -c "pwrite -S 0xaa 0K 16K" $SCRATCH_MNT/foo \
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| _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo
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# Doing IO against any range in the first 4K of the file should work.
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# Due to a past clone ioctl bug which allowed cloning the inline extent,
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# these operations resulted in EIO errors.
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echo "File foo data after clone operation:"
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# All bytes should have the value 0xaa (clone operation failed and did
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# not modify our file).
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od -t x1 $SCRATCH_MNT/foo
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$XFS_IO_PROG -c "pwrite -S 0xcc 0 100" $SCRATCH_MNT/foo | _filter_xfs_io
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# Test cloning the inline extent against a file which has a hole in its
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# first 4K followed by a non-inlined extent. It should not be possible
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# as well to clone the inline extent from file bar into this file.
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$XFS_IO_PROG -f -c "pwrite -S 0xdd 4K 12K" $SCRATCH_MNT/foo2 \
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| _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo2
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# Doing IO against any range in the first 4K of the file should work.
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# Due to a past clone ioctl bug which allowed cloning the inline extent,
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# these operations resulted in EIO errors.
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echo "File foo2 data after clone operation:"
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# All bytes should have the value 0x00 (clone operation failed and did
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# not modify our file).
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od -t x1 $SCRATCH_MNT/foo2
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$XFS_IO_PROG -c "pwrite -S 0xee 0 90" $SCRATCH_MNT/foo2 | _filter_xfs_io
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# Test cloning the inline extent against a file which has a size of zero
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# but has a prealloc extent. It should not be possible as well to clone
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# the inline extent from file bar into this file.
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$XFS_IO_PROG -f -c "falloc -k 0 1M" $SCRATCH_MNT/foo3 | _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo3
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# Doing IO against any range in the first 4K of the file should work.
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# Due to a past clone ioctl bug which allowed cloning the inline extent,
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# these operations resulted in EIO errors.
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echo "First 50 bytes of foo3 after clone operation:"
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# Should not be able to read any bytes, file has 0 bytes i_size (the
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# clone operation failed and did not modify our file).
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od -t x1 $SCRATCH_MNT/foo3
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$XFS_IO_PROG -c "pwrite -S 0xff 0 90" $SCRATCH_MNT/foo3 | _filter_xfs_io
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# Test cloning the inline extent against a file which consists of a
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# single inline extent that has a size not greater than the size of
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# bar's inline extent (40 < 50).
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# It should be possible to do the extent cloning from bar to this file.
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$XFS_IO_PROG -f -c "pwrite -S 0x01 0 40" $SCRATCH_MNT/foo4 \
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| _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo4
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# Doing IO against any range in the first 4K of the file should work.
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echo "File foo4 data after clone operation:"
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# Must match file bar's content.
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od -t x1 $SCRATCH_MNT/foo4
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$XFS_IO_PROG -c "pwrite -S 0x02 0 90" $SCRATCH_MNT/foo4 | _filter_xfs_io
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# Test cloning the inline extent against a file which consists of a
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# single inline extent that has a size greater than the size of bar's
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# inline extent (60 > 50).
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# It should not be possible to clone the inline extent from file bar
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# into this file.
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$XFS_IO_PROG -f -c "pwrite -S 0x03 0 60" $SCRATCH_MNT/foo5 \
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| _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo5
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# Reading the file should not fail.
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echo "File foo5 data after clone operation:"
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# Must have a size of 60 bytes, with all bytes having a value of 0x03
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# (the clone operation failed and did not modify our file).
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od -t x1 $SCRATCH_MNT/foo5
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# Test cloning the inline extent against a file which has no extents but
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# has a size greater than bar's inline extent (16K > 50).
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# It should not be possible to clone the inline extent from file bar
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# into this file.
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$XFS_IO_PROG -f -c "truncate 16K" $SCRATCH_MNT/foo6 | _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo6
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# Reading the file should not fail.
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echo "File foo6 data after clone operation:"
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# Must have a size of 16K, with all bytes having a value of 0x00 (the
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# clone operation failed and did not modify our file).
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od -t x1 $SCRATCH_MNT/foo6
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# Test cloning the inline extent against a file which has no extents but
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# has a size not greater than bar's inline extent (30 < 50).
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# It should be possible to clone the inline extent from file bar into
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# this file.
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$XFS_IO_PROG -f -c "truncate 30" $SCRATCH_MNT/foo7 | _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo7
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# Reading the file should not fail.
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echo "File foo7 data after clone operation:"
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# Must have a size of 50 bytes, with all bytes having a value of 0xbb.
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od -t x1 $SCRATCH_MNT/foo7
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# Test cloning the inline extent against a file which has a size not
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# greater than the size of bar's inline extent (20 < 50) but has
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# a prealloc extent that goes beyond the file's size. It should not be
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# possible to clone the inline extent from bar into this file.
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$XFS_IO_PROG -f -c "falloc -k 0 1M" \
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-c "pwrite -S 0x88 0 20" \
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$SCRATCH_MNT/foo8 | _filter_xfs_io
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$CLONER_PROG -s 0 -d 0 -l 0 $SCRATCH_MNT/bar $SCRATCH_MNT/foo8
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echo "File foo8 data after clone operation:"
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# Must have a size of 20 bytes, with all bytes having a value of 0x88
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# (the clone operation did not modify our file).
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od -t x1 $SCRATCH_MNT/foo8
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_scratch_unmount
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}
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echo -e "\nTesting without compression and without the no-holes feature...\n"
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test_cloning_inline_extents
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echo -e "\nTesting with compression and without the no-holes feature...\n"
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test_cloning_inline_extents "" "-o compress"
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echo -e "\nTesting without compression and with the no-holes feature...\n"
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test_cloning_inline_extents "-O no-holes" ""
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echo -e "\nTesting with compression and with the no-holes feature...\n"
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test_cloning_inline_extents "-O no-holes" "-o compress"
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status=0
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exit
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