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#! /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".
#
. ./common/preamble
_begin_fstest auto rw raid
. ./common/filter
_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
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