#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2020 Facebook.  All Rights Reserved.
#
# FS QA Test 207
#
# Test large DIO reads and writes with various profiles. Regression test for
# patch "btrfs: fix RAID direct I/O reads with alternate csums".
#
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

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

_supported_fs btrfs
# we check scratch dev after each loop
_require_scratch_nocheck
_require_scratch_dev_pool 4
_btrfs_get_profile_configs

for mkfs_opts in "${_btrfs_profile_configs[@]}"; do
	echo "Test $mkfs_opts" >>$seqres.full
	_scratch_pool_mkfs $mkfs_opts >>$seqres.full 2>&1
	_scratch_mount >>$seqres.full 2>&1

	dd if=/dev/urandom of="$SCRATCH_MNT/$seq" \
		bs=1M count=64 conv=fsync status=none
	dd if="$SCRATCH_MNT/$seq" of="$SCRATCH_MNT/$seq.dioread" \
		bs=1M iflag=direct status=none
	dd if="$SCRATCH_MNT/$seq" of="$SCRATCH_MNT/$seq.diowrite" \
		bs=1M oflag=direct status=none
	diff -q "$SCRATCH_MNT/$seq" "$SCRATCH_MNT/$seq.dioread" |
		tee -a $seqres.full
	diff -q "$SCRATCH_MNT/$seq" "$SCRATCH_MNT/$seq.diowrite" |
		tee -a $seqres.full

	_scratch_unmount
	_check_scratch_fs
done

echo "Silence is golden"

status=0
exit