Script to automatically install the native ZFS module on a LiveCD instance
I also use it to mount my ZFS root filesystem from the Ubuntu rescue instance on online.net. Once the zfsmount.sh script is on the boot partition, I can run the following commands:
ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no user@host -p 22
mount /dev/sda1 /mnt
/mnt/zfsmount.sh
-o UserKnownHostsFile=/dev/null and -o StrictHostKeyChecking=no are only needed for a rescue connection: without these options, the connection would be refused, as the temporary SSH server has a different key.
Once the installation is finished (about 5 minutes), the ZFS-rooted system can be chrooted in order to rescue it.
In order to install a native-ZFS Linux, you can follow these excellent tutoriels for Debian and for Ubuntu.
An idea can be to always have this file on the boot partition. You can install it using these commands:
mount /dev/sda1 /mnt
wget -o /mnt/zfsmount.sh https://raw.githubusercontent.com/madprog/zfsmount/master/zfsmount.sh
chmod +x /mnt/zfsmount.sh