mkfs -t ext4 -q /dev/vdc
mkfs -t ext4 -q /dev/vdb
mkfs -t ext4 -q /dev/vda
mkfs -t ext4 -q /dev/vdd
mount -t ext4 /dev/vda /fs/vda
mount -t ext4 /dev/vdb /fs/vdb
mount -t ext4 /dev/vdc /fs/vdc
mount -t ext4 /dev/vdd /fs/vdd
export TEST_DIR=/fs/vda
export TEST_DEV=/dev/vda
export SCRATCH_MNT=/fs/scratch
mkdir /fs/scratch -p
export SCRATCH_DEV=/dev/vdd
./check ext4/271 ext4/301 ext4/305