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https://github.com/linux-apfs/apfstests.git
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Eryu Guan
9f7d2a5264
On unpatched kernel, converting file with a hole at the beginning to non-extent based format results in ext4 i_blocks corruption. Add a new regression test case for it. These two commits fixed the corruption: ext4: be more strict when migrating to non-extent based file ext4: correctly migrate a file with a hole at the beginning Signed-off-by: Eryu Guan <eguan@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
84 lines
2.4 KiB
Bash
Executable File
84 lines
2.4 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test 005
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#
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# Test corruption issue in converting file with a hole at the beginning to
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# non-extent based format
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#
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# These two commits fixed the corruption:
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# ext4: be more strict when migrating to non-extent based file
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# ext4: correctly migrate a file with a hole at the beginning
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015 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 $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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# real QA test starts here
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_supported_fs ext4
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_supported_os Linux
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_require_scratch
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_require_command "$CHATTR_PROG" chattr
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rm -f $seqres.full
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echo "Silence is golden"
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_scratch_mkfs >>$seqres.full 2>&1
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_scratch_mount
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testfile=$SCRATCH_MNT/$seq.attrtest
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touch $testfile
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$CHATTR_PROG -e $testfile >>$seqres.full 2>&1
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if [ $? -ne 0 ]; then
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_notrun "Clearing extent flag not supported, old chattr and/or kernel?"
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fi
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rm -f $testfile
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# skip the first 4k and write to the second 4k, leave the first 4k as a hole
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$XFS_IO_PROG -fc "pwrite 4k 4k" -c "fsync" $testfile >>$seqres.full 2>&1
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# convert to non-extent based file format, buggy ext4 moves the data blocks to
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# the beginning of the file, but extent status cache still marks that region as
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# a hole
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$CHATTR_PROG -e $testfile >>$seqres.full 2>&1
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# delayed allocation writes to the "hole", reclaim the same data block again,
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# results in i_blocks corruption
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$XFS_IO_PROG -c "pwrite 0 4k" $testfile >>$seqres.full 2>&1
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# success, all done
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status=0
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exit
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