Files
apfstests/tests/ext4/005
T
Darrick J. Wong a860a167d8 common: kill _supported_os
fstests only supports Linux, so get rid of this unnecessary predicate.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
2020-09-21 01:16:50 +08:00

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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Red Hat Inc. All Rights Reserved.
#
# FS QA Test 005
#
# Test corruption issue in converting file with a hole at the beginning to
# non-extent based format
#
# 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
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15
_cleanup()
{
cd /
rm -f $tmp.*
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
# real QA test starts here
_supported_fs ext4
_require_scratch
_require_command "$CHATTR_PROG" chattr
rm -f $seqres.full
echo "Silence is golden"
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount
testfile=$SCRATCH_MNT/$seq.attrtest
touch $testfile
$CHATTR_PROG -e $testfile >>$seqres.full 2>&1
if [ $? -ne 0 ]; then
_notrun "Clearing extent flag not supported, old chattr and/or kernel?"
fi
rm -f $testfile
# skip the first 4k and write to the second 4k, leave the first 4k as a hole
$XFS_IO_PROG -fc "pwrite 4k 4k" -c "fsync" $testfile >>$seqres.full 2>&1
# convert to non-extent based file format, buggy ext4 moves the data blocks to
# the beginning of the file, but extent status cache still marks that region as
# a hole
$CHATTR_PROG -e $testfile >>$seqres.full 2>&1
# delayed allocation writes to the "hole", reclaim the same data block again,
# results in i_blocks corruption
$XFS_IO_PROG -c "pwrite 0 4k" $testfile >>$seqres.full 2>&1
# success, all done
status=0
exit