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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
#
# FS QA Test No. 296
#
# - Create two reflinked files a byte longer than a block.
# - Rewrite the whole file.
#
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 -rf $tmp.*
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/reflink
# real QA test starts here
_supported_os Linux
_require_scratch_reflink
_require_cp_reflink
rm -f $seqres.full
echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir
blksz=65536
nr=128
filesize=$((blksz * nr))
bufnr=16
bufsize=$((blksz * bufnr))
real_blksz=$(_get_block_size "$testdir")
_require_fs_space $SCRATCH_MNT $((filesize / 1024 * 3 * 5 / 4))
echo "Create the original files"
$XFS_IO_PROG -f -c "pwrite -S 0x61 -b $bufsize 0 $((filesize + 1))" $testdir/file1 >> $seqres.full
_cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full
$XFS_IO_PROG -f -c "pwrite -S 0x61 -b $bufsize 0 $((filesize + 1))" $testdir/file2.chk >> $seqres.full
_scratch_cycle_mount
echo "Compare files"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file2 | _filter_scratch
md5sum $testdir/file2.chk | _filter_scratch
echo "CoW and unmount"
$XFS_IO_PROG -f -c "pwrite -S 0x63 -b $real_blksz 0 $((filesize + 1))" -c "fdatasync" $testdir/file2 >> $seqres.full
$XFS_IO_PROG -f -c "pwrite -S 0x63 -b $real_blksz 0 $((filesize + 1))" -c "fdatasync" $testdir/file2.chk >> $seqres.full
_scratch_cycle_mount
echo "Compare files"
md5sum $testdir/file1 | _filter_scratch
md5sum $testdir/file2 | _filter_scratch
md5sum $testdir/file2.chk | _filter_scratch
# success, all done
status=0
exit
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