[Bug 1968150] Re: [FFe] Remove zsys from installer

[Renne]

Two weeks ago I had to install the NVidia GPU driver to disable the
Optimus NVidia GPU to save power on my laptop. After the installation of
the NVidia driver (Ubuntu Desktop 21.10 amd64) X didn't work anymore.
Ubuntu booted into the emergency/rescue system at any reboot.

Zsys saved my day by just reverting back to a snapshot before the NVidia
driver installation.

I highly suggest to make Zsys stable to improve data integrity on Ubuntu installations.
I hope I cant get Zsys working on the 22.04 installation this week.

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https://bugs.launchpad.net/bugs/1968150

Title:
  [FFe] Remove zsys from installer

Status in ubiquity package in Ubuntu:
  Fix Released

Bug description:
  Zsys is in very low maintenance mode (critical bug fixes only) and must be removed from the LTS.
  However ZFS and encrypted ZFS are still available as an installation option but the package ZSys is not installed.
  The ZFS layout remains unchanged.

  https://git.launchpad.net/ubiquity/commit/?id=76e7718dbdd9dde7a7609f754cf8719469bbf0e5

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