root@jfr-nas-01:~# lsmod | grep zfs
zfs                   877893  3 
zunicode              324505  1 zfs
zavl                   13115  1 zfs
zcommon                35984  1 zfs
znvpair                50640  2 zcommon,zfs
spl                   129108  5 znvpair,zcommon,zavl,zunicode,zfs
root@jfr-nas-01:~#