#! /bin/bash
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) 2020, Oracle and/or its affiliates.  All Rights Reserved.
#
# FS QA Test No. 519
#
# Make sure that reflink forces the log out if we mount with wsync.  We test
# that it actually forced the log by immediately shutting down the fs without
# flushing the log and then remounting to check file contents.

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
. ./common/reflink

# real QA test starts here
_supported_fs xfs
_require_scratch_reflink
_require_cp_reflink

rm -f $seqres.full

# Format filesystem and set up quota limits
_scratch_mkfs > $seqres.full
_scratch_mount -o wsync >> $seqres.full

# Set up initial files
$XFS_IO_PROG -f -c 'pwrite -S 0x58 0 1m -b 1m' $SCRATCH_MNT/a >> $seqres.full
$XFS_IO_PROG -f -c 'pwrite -S 0x59 0 1m -b 1m' $SCRATCH_MNT/c >> $seqres.full
_cp_reflink $SCRATCH_MNT/a $SCRATCH_MNT/e
_cp_reflink $SCRATCH_MNT/c $SCRATCH_MNT/d
touch $SCRATCH_MNT/b
sync

# Test that setting the reflink flag on the dest file forces the log
echo "test reflink flag not set"
$XFS_IO_PROG -x -c "reflink $SCRATCH_MNT/a" -c 'shutdown' $SCRATCH_MNT/b >> $seqres.full
_scratch_cycle_mount wsync
md5sum $SCRATCH_MNT/a $SCRATCH_MNT/b | _filter_scratch

# Test forcing the log even if both files are already reflinked
echo "test reflink flag already set"
$XFS_IO_PROG -x -c "reflink $SCRATCH_MNT/a" -c 'shutdown' $SCRATCH_MNT/d >> $seqres.full
_scratch_cycle_mount wsync
md5sum $SCRATCH_MNT/a $SCRATCH_MNT/d | _filter_scratch

# success, all done
status=0
exit