#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2018 Red Hat Inc.  All Rights Reserved.
#
# FS QA Test generic/559
#
# Dedupe a single big file and verify integrity
#
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

# remove previous $seqres.full before test
rm -f $seqres.full

# real QA test starts here
_supported_fs generic
_supported_os Linux
_require_scratch_duperemove

fssize=$((2 * 1024 * 1024 * 1024))
_scratch_mkfs_sized $fssize > $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1

# fill the fs with a big file has same contents
$XFS_IO_PROG -f -c "pwrite -S 0x55 0 $fssize" $SCRATCH_MNT/${seq}.file \
	>> $seqres.full 2>&1
md5sum $SCRATCH_MNT/${seq}.file > ${tmp}.md5sum

echo "= before cycle mount ="
# Dedupe with 1M blocksize
$DUPEREMOVE_PROG -dr --dedupe-options=same -b 1048576 $SCRATCH_MNT/ >>$seqres.full 2>&1
# Verify integrity
md5sum -c --quiet ${tmp}.md5sum
# Dedupe with 64k blocksize
$DUPEREMOVE_PROG -dr --dedupe-options=same -b 65536 $SCRATCH_MNT/ >>$seqres.full 2>&1
# Verify integrity again
md5sum -c --quiet ${tmp}.md5sum

# umount and mount again, verify pagecache contents don't mutate
_scratch_cycle_mount
echo "= after cycle mount ="
md5sum -c --quiet ${tmp}.md5sum

status=0
exit