modprobe -r brd
modprobe brd rd_nr=8 rd_size=12582912
modprobe md
dmsetup remove_all
wipefs -a --force /dev/ram0
wipefs -a --force /dev/ram1
wipefs -a --force /dev/ram2
wipefs -a --force /dev/ram3
wipefs -a --force /dev/ram4
wipefs -a --force /dev/ram5
wipefs -a --force /dev/ram6
wipefs -a --force /dev/ram7
mdadm -q --create /dev/md0 --chunk=256 --level=raid6 --raid-devices=8 --force --assume-clean /dev/ram0 /dev/ram1 /dev/ram2 /dev/ram3 /dev/ram4 /dev/ram5 /dev/ram6 /dev/ram7
wipefs -a --force /dev/md0
mkfs -t btrfs /dev/md0
mkdir -p /fs/md0
mount -t btrfs /dev/md0 /fs/md0

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

fs_mark -d /fs/md0/1 -n 15360 -L 1 -S 1 -s 4194304