Altere a propriedade snapdir do conjunto de dados se você precisar torná-la visível.
# ls -la /rpool/
total 6
drwxr-xr-x 5 root root 4 2010-09-14 05:21 .
drwxr-xr-x 25 root root 25 2010-11-18 13:18 ..
dr-xr-xr-x 4 root root 4 2010-09-14 05:15 .zfs
drwxr-xr-x 3 root root 3 2010-09-14 05:15 boot
drwxr-xr-x 2 root root 3 2010-09-14 05:21 etc
# zfs set snapdir=hidden rpool
# ls -la /rpool/
total 6
drwxr-xr-x 4 root root 4 2010-09-14 05:21 .
drwxr-xr-x 24 root root 25 2010-11-18 13:18 ..
drwxr-xr-x 3 root root 3 2010-09-14 05:15 boot
drwxr-xr-x 2 root root 3 2010-09-14 05:21 etc