[Bug 1878705] Re: Fix multiple initrds support in grub.conf

[Łukasz Zemczak]

Hello Dimitri, or anyone else affected,

Accepted grub2 into focal-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/grub2/2.04-1ubuntu26.3
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-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. 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: grub2 (Ubuntu Focal)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-focal

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https://bugs.launchpad.net/bugs/1878705

Title:
  Fix multiple initrds support in grub.conf

Status in grub2 package in Ubuntu:
  Fix Released
Status in grub2 source package in Focal:
  Fix Committed
Status in grub2 source package in Groovy:
  Fix Released

Bug description:
  [Impact]

   * When attempting to use multiple initrd, update-grub generates
  invalid grub.cfg configuration.

  [Test Case]

   * sudo touch /boot/microcode.cpio
   * sudo update-grub
   * grep microcode.cpio /boot/grub/grub.cfg
  initrd	/ microcode.cpio initrd.img-5.4.0-37-generic

  Observe that the initrd stanzas are incorrect. Instead they should be
  _both_ absolute valid filepaths from grub prefix location, i.e.

  initrd /microcode.cpio /initrd.img-5.4.0-37-generic

   # ensure one cleans up the system after testing
   * sudo rm /boot/microcode.cpio
   * sudo update-grub

  [Regression Potential]

   * 2.04 upstream release supports multiple initrds correctly, but the
  ubuntu-only patches incorrectly changed the behaviour of grub-mkconfig
  breaking this support. This SRU fixes this. Since currently multiple
  initrd support is broken, nobody is using it. But hopefully it will
  become usable after this SRU and will be used by default in certain
  configurations.

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