tests/generic/203

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
#
# FS QA Test No. 203
#
# See what happens if we DIO CoW across not-block-aligned EOF.
#
. ./common/preamble
_begin_fstest auto quick clone

# Override the default cleanup function.
_cleanup()
{
    cd /
    rm -rf $tmp.* $testdir
}

# Import common functions.
. ./common/filter
. ./common/reflink

_require_scratch_reflink
_require_cp_reflink
_require_odirect

echo "Format and mount"
_scratch_mkfs > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1

testdir=$SCRATCH_MNT/test-$seq
mkdir $testdir

echo "Create the original files"
blksz=65536
_pwrite_byte 0x61 0 $((blksz + 17)) $testdir/file1 >> $seqres.full
_cp_reflink $testdir/file1 $testdir/file2
_pwrite_byte 0x61 0 $((blksz + 17)) $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 -d -f -c "pwrite -S 0x63 $blksz $blksz" $testdir/file2 >> $seqres.full
$XFS_IO_PROG -f -c "pwrite -S 0x63 $blksz $blksz" $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