Add ZFS to Hetzner Rescue Image for Fixing Debian Server

Hi,

I figured out what was needed.

Using the old jessie rescue image, if trying to install zfs via the instructions here:

Boot older jessie.

Install zfs packages:

apt-get install zfs-dkms zfsutils-linux

Problem:

The following packages have unmet dependencies:

zfs-dkms : PreDepends: spl-dkms (>= 0.6.5.9) but it is not going to be installed

Solution:

The fix for this is to once booted into the rescue system, do this before installing zfs:

The backports IS enabled on rescue image already thankfully.

apt install -t jessie-backports dkms

I was unable to figure this out using the newest rescue image. Only the older jessie.