useradd -m user1 zfs create -p tp1/srv/user1 zfs allow -u user1 compression tp1/srv/user1 zfs allow tp1/srv/user1 zfs set compression=off tp1/srv/user1
als user1:
su - user1 zfs get compression tp1/srv/user1
→ geht
zfs set compression=off tp1
→ permission denied
zfs set atime=off tp1/srv/user1
→ permission denied