#! /bin/sh -x

log=/tmp/log

do_test() {
    cd /mnt
    dbench 2
    cd /
    umount /mnt
}

dmsetup create origin tables/origin_small
dmsetup create cow tables/cow_small
dd of=/dev/mapper/cow if=/dev/zero count=128

dmsetup create snap
dmsetup load snap tables/snap_small
dmsetup resume snap
mke2fs /dev/mapper/snap
mount /dev/mapper/snap /mnt
do_test
dmsetup remove snap
dmsetup remove cow
dmsetup remove origin