Ubuntu patches zfs to be compatible with our kernels.
Ubuntu does not recommend to use 3rd party PPAs.
Ubuntu released kernels have support for zfs.
Before doing dist upgrade of production systems, it is best to test new
OS releases in test environments and or VMs if you have specific
requirements. It should be quick and easy enough to i.e. install 20.04
desktop ISO with zfs and upgrade all the way to lunar and verify any
functionality you rely on.
** Changed in: zfs-linux (Ubuntu)
Status: New => Opinion
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https://bugs.launchpad.net/bugs/2017449
Title:
Unsafe to upgrade ZFS Boot Ubuntu from Kinetic to Lunar
Status in zfs-linux package in Ubuntu:
Opinion
Bug description:
Need to know if it is safe to upgrade from Ubuntu 22.10/Kinetic to
23.04/Lunar on systems that have been installed onto the ZFS
filesystem via the Ubuntu 22.10 GUI installer and selecting the ZFS
filesystem option.
The reason I ask is I was burned by this in the last upgrade cycle.
Upgrading 21.10 to 22.03 resulted in an unbootable system with no
warning, no easy recourse, very few recovery options because Ubuntu
22.03 did not ship with proper ZFS kernel support. It was very bad
and I lost a week of income from the downtime.
It looks like the same situation exists here. Ubuntu 23.04/Lunar
ships with Kernel 6.2 but ZFS didn't release Kernel 6.2 support until
very recently and from what I can tell (??) the updated ZFS packages
did not make it into the Lunar installer.
The last time I resolved the issue by using Jonathon F's ZFS support
PPA (here https://launchpad.net/~jonathonf/+archive/ubuntu/zfs) but it
looks like he no longer supports it. I've tried to contact him
several times over the last week but get no response.
Will the upgraded system be bootable?
What is the recommended path to get onto Lunar? I have been waiting
for 23.04 to resolve various issues with my MSI Z690 motherboard, etc.
If this is actually an issue I recommend urgently resolving it so that
others who selected ZFS are not stranded at an emergency prompt with
no guidance on how to handle the problem.
ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: evince 43.0-1ubuntu1
ProcVersionSignature: Ubuntu 5.19.0-40.41-generic 5.19.17
Uname: Linux 5.19.0-40-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.23.1-0ubuntu3.2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Sun Apr 23 13:01:55 2023
InstallationDate: Installed on 2022-05-03 (354 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64
(20220419)
ProcEnviron:
LANGUAGE=
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: evince
UpgradeStatus: Upgraded to kinetic on 2022-12-02 (142 days ago)
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