mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Eryu Guan
b741135ef7
Calling EXT4_IOC_MOVE_EXTENT on file not aligned with block size and block size is smaller than page size would cause integrity issue on the partial-blocksize part when copying data between orign file and donor file. This ext4 kernel patch would fix it, titled "ext4: don't read blocks from disk after extents being swapped in move_extent_per_page())" Though this bug only happens in the blocksize smaller than pagesize case, there's no harm to test on various block size fs, so no block size is specified in the test, it depends on the test configurations. Signed-off-by: Eryu Guan <eguan@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
88 lines
2.4 KiB
Bash
Executable File
88 lines
2.4 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test 020
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#
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# Test partial blocksize defrag integrity issue.
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#
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# Calling EXT4_IOC_MOVE_EXTENT on file not aligned with block size and block
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# size is smaller than page size would cause integrity issue on the
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# partial-blocksize part when copying data between orign file and donor file.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2016 Red Hat Inc. 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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here=`pwd`
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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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. ./common/defrag
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs ext4
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_supported_os Linux
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_require_scratch
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_require_defrag
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e4compact=$here/src/e4compact
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_require_test_program "e4compact"
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testfile=$SCRATCH_MNT/$seq.orig
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donorfile=$SCRATCH_MNT/$seq.donor
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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# reserve space for donor file, written by 0xaa and sync to disk to avoid
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# EBUSY on EXT4_IOC_MOVE_EXT
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$XFS_IO_PROG -fc "pwrite -S 0xaa 0 1m" -c "fsync" $donorfile | _filter_xfs_io
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# create test file with 1023 in size, written by 0xbb
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# 1023 is smaller than 1k and works for any block size filesystems
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$XFS_IO_PROG -fc "pwrite -S 0xbb 0 1023" -c "fsync" $testfile | _filter_xfs_io
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# compute initial md5sum
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md5sum $testfile > $tmp.md5sum
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# drop cache, force e4compact to read data from disk
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echo 3 > /proc/sys/vm/drop_caches
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# test defrag
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echo "$testfile" | $e4compact -i -v -f $donorfile >>$seqres.full
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# check md5sum
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md5sum -c $tmp.md5sum | _filter_scratch
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# success, all done
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status=0
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exit
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