modprobe -r brd
modprobe brd rd_nr=4 rd_size=12582912
dmsetup remove_all
wipefs -a --force /dev/ram0
wipefs -a --force /dev/ram1
wipefs -a --force /dev/ram2
wipefs -a --force /dev/ram3
mdadm -q --create /dev/md0 --chunk=256 --level=raid0 --raid-devices=4 --force --assume-clean /dev/ram0 /dev/ram1 /dev/ram2 /dev/ram3
wipefs -a --force /dev/md0
mkfs -t f2fs /dev/md0
mkdir -p /fs/md0
mount -t f2fs /dev/md0 /fs/md0

for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
do
	echo performance > $file
done

echo "500 32000 128 512" > /proc/sys/kernel/sem
cat > workfile <<EOF
FILESIZE: 1M
POOLSIZE: 10M
10 disk_cp
EOF
echo "/fs/md0" > config

	(
		echo lkp-ivb-ep01
		echo disk_cp

		echo 1
		echo 3000
		echo 2
		echo 3000
		echo 1
	) | ./multitask -t