rdac_groupid queries which controller the path is attached to, which we'll use as the group id later on.
rdac_groupid queries which controller the path is attached to, which we'll
use as the group id later on.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars