[i3luefire@pcbsd-717] /usr/jails# zfs destroy tank0/usr/jails/debian
cannot destroy 'tank0/usr/jails/debian': filesystem has children
use '-r' to destroy the following datasets:
tank0/usr/jails/debian@2013-06-05-18-37-35
[i3luefire@pcbsd-717] /usr/jails# zfs destroy -r tank0/usr/jails/debian
[i3luefire@pcbsd-717] /usr/jails# ls
debian               fbsd-release.txz     fbsd-release.txz.md5
[i3luefire@pcbsd-717] /usr/jails# rm -r debian
[i3luefire@pcbsd-717] /usr/jails# ls
fbsd-release.txz     fbsd-release.txz.md5
[i3luefire@pcbsd-717] /usr/jails# warden create 13.67.25.131 oldskewl
Getting regional mirror...
Using mirror: ftp://ftp.pcbsd.org/pub/mirror
Fetching jail environment. This may take a while...
Downloading ftp://ftp.pcbsd.org/pub/mirror/9.1/amd64/netinstall/fbsd-release.txz ...
Creating ZFS /usr/jails/.warden-chroot-amd64 dataset...
ERROR: Failed extracting ZFS chroot environment
[i3luefire@pcbsd-717] /usr/jails#