Install Ubuntu server with ZFS root

This script will install Ubuntu Server with a ZFS root.

It will be a stock Ubuntu server install, except:

There will be a bridge on the ethernet port so that virtual systems can participate in the LAN (look for br0 in the script).
The finish-install.sh script will install a few extra things (such as Docker, LXD, KVM, QEMU).
When the installation completes, it will create a zfs snapshot rpool/ROOT/ubuntu_xxxxxx@fresh-install to save the initial state of the root filesystem.

See the OpenZFS documentation for more info.

Usage

Modify the script's configuration section, then run the script from a bootstrap environment (such as the Ubuntu live CD).

To set up SSHD on the live CD so that you can do everything over SSH:

sudo apt install --yes openssh-server vim && echo -e "ubuntu\nubuntu" | passwd ubuntu

Note: The IP address will change on the first reboot due to it connecting via the bridge. Usually it's address + 1.

License

MIT License:

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.