dmsetup remove_all
wipefs -a --force /dev/nvme0n1p1
mkfs -t btrfs /dev/nvme0n1p1
mkdir -p /fs/nvme0n1p1
mount -t btrfs /dev/nvme0n1p1 /fs/nvme0n1p1

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 "performance" > "$file"
done

cd /fs/nvme0n1p1
sysbench fileio --events=0 --threads=224 --time=600 --file-test-mode=rndrw --file-total-size=68719476736 --file-io-mode=sync --file-num=1024 prepare
sysbench fileio --events=0 --threads=224 --time=600 --file-test-mode=rndrw --file-total-size=68719476736 --file-io-mode=sync --file-num=1024 run