zfs-hetzner-vm

Scripts to convert Debian 13 or Ubuntu 22 LTS with ZFS root on Hetzner servers (virtual and dedicated).

It will pack the current system into ram, create zfs polls and unpack the system.

How to use:

• Login into Hetzner cloud server console.
• Choose "rescue" menu.
• Click "enable rescue and power cycle", add SSH key to the rescue console, set it OS to linux64, then press mount rescue and power cycle" button.
• connect via SSH to rescue console, and run the script from this repo.

Convert the server to zfs

wget -qO- https://raw.githubusercontent.com/hw-rjuzak/zfs-hetzner-vm/master/hetzner-zfs-convert.sh | bash -

Answer script questions about desired ZFS ARC cache size.

To cope with network failures it's highly recommended to run the commands above inside screen console, type man screen for more info. Example of screen utility usage:

export LC_ALL=en_US.UTF-8 && screen -S zfs

To detach from screen console, hit Ctrl-d then a To reattach, type screen -r zfs

Upon successful run, the script will reboot system, and you will be able to login into it, using the same SSH key you have used within rescue console