check ZFS pools

[bisco]

Hi,

I'm using FreeBSD 10.0-RELEASE-p2 installed on a ZFS pool and I would
check disk space: is there a way to configure monit properly?
The command 'zpool list -v` shows ada0p2 as real partition for the ZFS
pool; I've tried to use it (/dev/ada0p2) in the configuration file:

###
check device ROOT with path /dev/ada0p2
    if space usage > 75% then alert
###

but it doesn't work.

Any ideas?

Thank you in advance,
Alfredo