dmsetup remove_all
wipefs -a --force /dev/sda
mkfs -t btrfs /dev/sda
mkdir -p /fs/sda
mount -t btrfs /dev/sda /fs/sda

for cpu_dir in /sys/devices/system/cpu/cpu[0-9]*
do
	online_file="$cpu_dir"/online
	[ -f "$online_file" ] && [ "$(cat "$online_file")" -eq 0 ] && continue

	file="$cpu_dir"/cpufreq/scaling_governor
	[ -f "$file" ] && echo "$scaling_governor" > "$file"
done

./blogbench -d /fs/sda