dmsetup remove_all
wipefs -a --force /dev/sdb1
mkfs -t btrfs /dev/sdb1
mkdir -p /fs/sdb1
mount -t btrfs /dev/sdb1 /fs/sdb1
mkdir /export
mount -t tmpfs nfsv4_root_export /export
mkdir -p /export//fs/sdb1
mount --bind /fs/sdb1 /export//fs/sdb1
echo '/export//fs/sdb1 *(rw,no_subtree_check,no_root_squash)' >> /etc/exports
systemctl restart rpcbind
systemctl restart rpc-statd
systemctl restart nfs-idmapd
systemctl restart nfs-server
mkdir -p /nfs/sdb1
timeout 5m mount -t nfs -o vers=4 localhost:/fs/sdb1 /nfs/sdb1
touch /nfs/sdb1/wait_for_nfs_grace_period
sync
echo 3 > /proc/sys/vm/drop_caches

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

filebench -f /lkp/benchmarks/filebench/share/filebench/workloads/filemicro_rwritefsync.f
sleep 100
rm -rf /nfs/sdb1/bigfile /nfs/sdb1/wait_for_nfs_grace_period