#! /bin/bash
# FS QA Test generic/095
#
# Concurrent mixed I/O (buffer I/O, aiodio, mmap, splice) on the same files
#
#-----------------------------------------------------------------------
# Copyright (c) 2015 Red Hat Inc. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------
#

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
_supported_fs generic
_supported_os Linux
_require_scratch

iodepth=$((16 * LOAD_FACTOR))
iodepth_batch=$((8 * LOAD_FACTOR))
numjobs=$((5 * LOAD_FACTOR))
fio_config=$tmp.fio
cat >$fio_config <<EOF
[global]
bs=8k
iodepth=$iodepth
iodepth_batch=$iodepth_batch
randrepeat=1
size=1m
directory=$SCRATCH_MNT
numjobs=$numjobs
[job1]
ioengine=sync
bs=1k
direct=1
rw=randread
filename=file1:file2
[job2]
ioengine=libaio
rw=randwrite
direct=1
filename=file1:file2
[job3]
bs=1k
ioengine=posixaio
rw=randwrite
direct=1
filename=file1:file2
[job4]
ioengine=splice
direct=1
rw=randwrite
filename=file1:file2
[job5]
bs=1k
ioengine=sync
rw=randread
filename=file1:file2
[job6]
ioengine=posixaio
rw=randwrite
filename=file1:file2
[job7]
ioengine=splice
rw=randwrite
filename=file1:file2
[job8]
ioengine=mmap
rw=randwrite
bs=1k
filename=file1:file2
[job9]
ioengine=mmap
rw=randwrite
direct=1
filename=file1:file2
EOF
# with ioengine=mmap and direct=1, fio requires bs to be at least pagesize,
# which is a fio built-in var.
echo 'bs=$pagesize' >> $fio_config

rm -f $seqres.full
_require_fio $fio_config
_scratch_mkfs >>$seqres.full 2>&1
_scratch_mount

echo "Silence is golden"
$FIO_PROG $fio_config >>$seqres.full 2>&1

# xfs generates WARNINGs on purpose when applications mix buffered/mmap IO with
# direct IO on the same file. On the other hand, this fio job has been proven
# to be potent, we don't want to simply _disable_dmesg_check which could miss
# other potential bugs. So filter out the intentional WARNINGs, make sure test
# doesn't fail because of this warning and fails on other WARNINGs.
filter_xfs_dmesg()
{
	local warn1="WARNING:.*fs/xfs/xfs_file\.c:.*xfs_file_dio_aio_write.*"
	local warn2="WARNING:.*fs/xfs/xfs_file\.c:.*xfs_file_read_iter.*"
	sed -e "s#$warn1#Intentional warnings in xfs_file_dio_aio_write#" \
	    -e "s#$warn2#Intentional warnings in xfs_file_read_iter#"
}

# umount before checking dmesg in case umount triggers any WARNING or Oops
_scratch_unmount

if [ "$FSTYP" == "xfs" ]; then
	_check_dmesg filter_xfs_dmesg
else
	_check_dmesg
fi
status=$?
exit