[Bug 2067622] Re: cryptsetup-initramfs disappeared during upgrade from 23.10 to 24.04 leading to failing boot

[Łukasz Zemczak]

Hello Beda, or anyone else affected,

Accepted ubuntu-release-upgrader into noble-proposed. The package will
build now and be available at
https://launchpad.net/ubuntu/+source/ubuntu-release-upgrader/1:24.04.21
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-noble

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https://bugs.launchpad.net/bugs/2067622

Title:
  cryptsetup-initramfs disappeared during upgrade from 23.10 to 24.04
  leading to failing boot

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released
Status in ubuntu-release-upgrader source package in Noble:
  Fix Committed
Status in ubuntu-release-upgrader source package in Oracular:
  Fix Released

Bug description:
  [Impact]

  If an upgrade removes cryptsetup-initramfs, the system can then fail
  to boot.

  [Test Plan]

  We don't currently have a reproducer for this scenario, so we need to
  test that cryptsetup-initramfs is listed in the removal_denylist.cfg
  during upgrades to Noble.

  1. Start an upgrade

  $ do-release-upgrade

  2. In another terminal, after the tarball has been downloaded and
  unpacked, find the temp directory

  $ tmpdir="$(find /tmp -name ubuntu-release-upgrader-* -type d)"

  3. Check that cryptsetup-initramfs is in the removal deny list:

  grep "cryptsetup-initramfs" "$tmpdir/removal_denylist.cfg"

  It should be listed there.

  [Where problems could occur]

  If there was a typo in the patch, the entry would not correctly match
  the cryptsetup-initramfs package name, and would therefore not prevent
  removal during upgrades.

  [Original Description]

  I have a system with a full-disk encryption installed with 23.10.
  After doing an upgrade to 24.04 from command line using `do-release-
  upgrade` (everything went without a problem), I rebooted and got a
  initramfs prompt complaining about root filesystem not being
  available.

  I was able to boot using the kernel from the previous version (6.5.0)
  and after inspecting the system, I found that the `cryptsetup-
  initramfs` package was not installed. After installing it, it produced
  a new and slightly larger initramfs. With it, I was able to boot with
  the 6.8.0 kernel.

  From the upgrade logs, I can see the following:

  ```
  Investigating (0) cryptsetup-initramfs:amd64 < 2:2.7.0-1ubuntu4 @ii gK Ib >
  Broken cryptsetup-initramfs:amd64 Depends on cryptsetup:amd64 < 2:2.7.0-1ubuntu4 @ii pgP > (>= 2:2.7.0-1ubuntu4)
    Considering cryptsetup:amd64 10000 as a solution to cryptsetup-initramfs:amd64 0
    Removing cryptsetup-initramfs:amd64 rather than change cryptsetup:amd64
  ```

  Which I think is the culprit of the problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: ubuntu-release-upgrader-core 1:24.04.18
  ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
  Uname: Linux 6.8.0-31-generic x86_64
  NonfreeKernelModules: zfs nvidia_modeset nvidia
  ApportVersion: 2.28.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CurrentDesktop: MATE
  Date: Thu May 30 16:37:39 2024
  InstallationDate: Installed on 2024-02-25 (95 days ago)
  InstallationMedia: Ubuntu-MATE 23.10 "Mantic Minotaur" - Release amd64 (20231010)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to noble on 2024-05-30 (0 days ago)
  VarLogDistupgradeXorgFixuplog:
   INFO:root:/usr/bin/do-release-upgrade running
   INFO:root:No xorg.conf, exiting

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