#! /bin/bash
# SPDX-License-Identifier: GPL-2.0

#
# FSQA Test No. 627
#
# AIO/DIO stress test
# Run random AIO/DIO activity on an file system with unwritten regions
#
# This test verifies that the an unwritten extent is properly marked
# as written after writing into it.
#
# There was a hard-to-hit bug which would occasionally trigger with
# ext4 for which this test was a reproducer.  This has been fixed
# after moving ext4 to use iomap for Direct I/O's, although as of this
# writing, there are still some occasional failures on ext4 when block
# size < page size.
#
. ./common/preamble
_begin_fstest auto aio rw stress prealloc

fio_config=$tmp.fio
fio_out=$tmp.fio.out

# Import common functions.
. ./common/filter

# real QA test starts here
_supported_fs generic
_require_test
_require_scratch
_require_odirect
_require_aio
_require_block_device $SCRATCH_DEV

NUM_JOBS=$((4*LOAD_FACTOR))
BLK_DEV_SIZE=`blockdev --getsz $SCRATCH_DEV`
FILE_SIZE=$(((BLK_DEV_SIZE * 512) * 3 / 4))

max_file_size=$((5 * 1024 * 1024 * 1024))
if [ $max_file_size -lt $FILE_SIZE ]; then
	FILE_SIZE=$max_file_size
fi
SIZE=$((FILE_SIZE / 2))

cat >$fio_config <<EOF
###########
# $seq test fio activity
# Filenames derived from jobsname and jobid like follows:
# ${JOB_NAME}.${JOB_ID}.${ITERATION_ID}
[global]
ioengine=libaio
bs=128k
directory=${SCRATCH_MNT}
filesize=${FILE_SIZE}
size=${FILE_SIZE}
io_size=${SIZE}
iodepth=$((128*$LOAD_FACTOR))
fallocate=native

# Perform direct aio and verify data
# This test case should check use-after-free issues
[aio-dio-verifier]
numjobs=1
verify=crc32c-intel
verify_fatal=1
verify_dump=1
verify_backlog=1024
verify_async=4
direct=1
random_generator=lfsr
blocksize_range=4k-8200k
rw=randwrite
filename=test-file

EOF

_require_fio $fio_config
_require_xfs_io_command "falloc"

_scratch_mkfs >> $seqres.full 2>&1
_scratch_mount

echo ""
echo "Run fio with random aio-dio pattern"
echo ""
cat $fio_config >> $seqres.full
$FIO_PROG $fio_config --output=$fio_out
cat $fio_out >> $seqres.full

status=0
exit