#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2022 Oracle.  All Rights Reserved.
#
# FS QA Test No. 725
#
# Test scatter-gather atomic file commits.  Use the startupdate command to
# create a temporary file, write sparsely to it, then commitupdate -h to
# perform the scattered update.

. ./common/preamble
_begin_fstest auto quick fiexchange swapext

# Override the default cleanup function.
_cleanup()
{
	cd /
	rm -r -f $tmp.* $dir
}

# Import common functions.
. ./common/filter

# real QA test starts here
_require_xfs_io_command swapext '-v exchrange -a'
_require_xfs_io_command startupdate '-e'
_require_scratch

_scratch_mkfs >> $seqres.full
_scratch_mount
_require_congruent_file_oplen $SCRATCH_MNT 65536

# Create original file
_pwrite_byte 0x58 0 1m $SCRATCH_MNT/a >> $seqres.full
sync
md5sum $SCRATCH_MNT/a | _filter_scratch

# Test atomic scatter-gather file commits.
echo commit | tee -a $seqres.full
$XFS_IO_PROG \
	-c 'bmap -elpv' \
	-c 'startupdate -e' \
	-c 'truncate 1m' \
	-c 'pwrite -S 0x59 64k 64k' \
	-c 'pwrite -S 0x57 768k 64k' \
	-c 'bmap -elpv' \
	-c 'commitupdate -h -k' \
	-c 'bmap -elpv' \
	$SCRATCH_MNT/a >> $seqres.full
_scratch_cycle_mount

md5sum $SCRATCH_MNT/a | _filter_scratch

# success, all done
status=0
exit