Para quem encontrar os seguintes erros,
The following packages have unmet dependencies:
zfsutils-linux : ***Depends: zfs-doc (= 0.6.4.2-0ubuntu1) but 0.6.5.3-1~wily is to be installed***
Depends: libnvpair1linux but it is not going to be installed
Depends: libuutil1linux but it is not going to be installed
Depends: libzfs2linux but it is not going to be installed
Depends: libzpool2linux but it is not going to be installed
Recommends: zfs-dkms but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Isso provavelmente se deve ao fato de ter ppa:zfs-native/stable
em seu repositório de fontes do apt. Remova o ppa:zfs-native/stable
do seu repositório apt e execute novamente apt-get update
. Em seguida, prossiga para instalar via apt-get install zfsutils-linux
Isso deve resolver isso para você.