[Bug 2039172] Re: grub 2.12~rc1 fails to load files from large directories on XFS

[Steve Langasek]

--> if /boot is on xfs AND the system is not booted under UEFI, since we
do not expect this to impact bootability when using the unified grub.efi
image.

** Also affects: grub2 (Ubuntu Mantic)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-release-upgrader (Ubuntu Mantic)
   Importance: Undecided
       Status: New

** Also affects: grub2 (Ubuntu Noble)
   Importance: High
       Status: Triaged

** Also affects: ubuntu-release-upgrader (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Tags added: foundations-todo

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https://bugs.launchpad.net/bugs/2039172

Title:
  grub 2.12~rc1 fails to load files from large directories on XFS

Status in grub2 package in Ubuntu:
  Triaged
Status in ubuntu-release-upgrader package in Ubuntu:
  New
Status in grub2 source package in Mantic:
  New
Status in ubuntu-release-upgrader source package in Mantic:
  New
Status in grub2 source package in Noble:
  Triaged
Status in ubuntu-release-upgrader source package in Noble:
  New
Status in grub2 package in Debian:
  Confirmed

Bug description:
  [Impact]
  Multi-extent directories are not parsed correctly by grub's XFS code in 2.12~rc1, preventing it from loading files from directories with too many entries, such as the grub module directory.

  This should only affect BIOS systems as they need to load the core
  grub modules from the module directory, whereas UEFI systems have them
  embedded in the ESP EFI image.

  [Test plan]
  TBD

  [Where problems could occur]
  TBD

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