[Bug 2081640] [NEW] Upgrade to the Kubuntu 24.10 beta errors out complaining that the 24.10 kernel does not support ZFS

[Guruprasad]

Public bug reported:

As someone interested in trying out and testing the Kubuntu 24.10 beta,
I tried to upgrade to it from an up-to-date Kubuntu 24.04 installation
using `sudo do-release-upgrade -d` after editing `/etc/update-
manager/release-upgrades to set `Prompt=normal`. But the upgrader did
some initial work and then aborted with an error message that says that
I cannot upgrade my installation as the 24.10 kernel does not support
ZFS.

This is strange because my installation uses a btrfs-on-root full disk
encrypted setup and there is no ZFS at all. I also suspected that LXD
might be using a ZFS volume for storage and when I checked, I found that
it was using a btrfs volume.

So this looks like a bug in the updater which appears to wrongly flag
and block the upgrade on my system which does not use ZFS at all.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: ubuntu-release-upgrader-core 1:24.04.23
ProcVersionSignature: Ubuntu 6.8.0-22.22-generic 6.8.1
Uname: Linux 6.8.0-22-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CrashReports: 640:1000:112:31533503:2024-09-18 11:15:06.091644011 +0530:2024-09-18 11:15:02.081626896 +0530:/var/crash/_usr_bin_emacs-gtk.1000.crash
CurrentDesktop: KDE
Date: Sun Sep 22 20:53:11 2024
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to noble on 2024-09-22 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2024-09-22 20:48:10.022980
 Log time: 2024-09-22 20:48:14.892880
 Log time: 2024-09-22 20:48:15.457432
mtime.conffile..etc.update-manager.release-upgrades: 2024-09-22T14:01:33.487215

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade noble

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https://bugs.launchpad.net/bugs/2081640

Title:
  Upgrade to the Kubuntu 24.10 beta errors out complaining that the
  24.10 kernel does not support ZFS

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  As someone interested in trying out and testing the Kubuntu 24.10
  beta, I tried to upgrade to it from an up-to-date Kubuntu 24.04
  installation using `sudo do-release-upgrade -d` after editing
  `/etc/update-manager/release-upgrades to set `Prompt=normal`. But the
  upgrader did some initial work and then aborted with an error message
  that says that I cannot upgrade my installation as the 24.10 kernel
  does not support ZFS.

  This is strange because my installation uses a btrfs-on-root full disk
  encrypted setup and there is no ZFS at all. I also suspected that LXD
  might be using a ZFS volume for storage and when I checked, I found
  that it was using a btrfs volume.

  So this looks like a bug in the updater which appears to wrongly flag
  and block the upgrade on my system which does not use ZFS at all.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: ubuntu-release-upgrader-core 1:24.04.23
  ProcVersionSignature: Ubuntu 6.8.0-22.22-generic 6.8.1
  Uname: Linux 6.8.0-22-generic x86_64
  NonfreeKernelModules: zfs
  ApportVersion: 2.28.1-0ubuntu3.1
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CrashReports: 640:1000:112:31533503:2024-09-18 11:15:06.091644011 +0530:2024-09-18 11:15:02.081626896 +0530:/var/crash/_usr_bin_emacs-gtk.1000.crash
  CurrentDesktop: KDE
  Date: Sun Sep 22 20:53:11 2024
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to noble on 2024-09-22 (0 days ago)
  VarLogDistupgradeAptlog:
   Log time: 2024-09-22 20:48:10.022980
   Log time: 2024-09-22 20:48:14.892880
   Log time: 2024-09-22 20:48:15.457432
  mtime.conffile..etc.update-manager.release-upgrades: 2024-09-22T14:01:33.487215

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