FreeNAS

#!/bin/sh

create_dev()

{

	local size="$1"

	local dev=$(mdconfig -a -t swap -s $size)

	gpart create -s gpt $dev > /dev/null

	gpart add -t freebsd-zfs $dev > /dev/null

	echo "${dev}"

}

destroy_dev()

{

	local dev="$1"

	mdconfig -d -u $dev

}

d0=$(create_dev 200M)

d1=$(create_dev 100M)

d2=$(create_dev 100M)

# create the pool with different sized members, the pool size will be the min

zpool create -f pool mirror ${d0}p1 ${d1}p1

zpool detach pool ${d1}p1

zpool attach pool ${d0}p1 ${d2}p1

zpool export pool

destroy_dev $d2

destroy_dev $d1

destroy_dev $d0