#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2014 Red Hat, Inc.  All Rights Reserved.
#
# FS QA Test No. generic/031
#
# Test non-aligned writes against fcollapse to ensure that partial pages are
# correctly written and aren't left behind causing invalidation or data
# corruption issues.
#
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

# real QA test starts here

# Modify as appropriate.
_supported_fs generic
_require_scratch
_require_xfs_io_command "fcollapse"

testfile=$SCRATCH_MNT/testfile

_scratch_mkfs > /dev/null 2>&1
_scratch_mount

$XFS_IO_PROG -f \
	-c "pwrite 185332 55756" \
	-c "fcollapse 28672 40960" \
	-c "pwrite 133228 63394" \
	-c "fcollapse 0 4096" \
$testfile | _filter_xfs_io

echo "==== Pre-Remount ==="
hexdump -C $testfile
_scratch_cycle_mount
echo "==== Post-Remount =="
hexdump -C $testfile

status=0
exit