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  1. RHEL Conversions
  2. RHELC-1780

GRUB2 config file generation fails on EL9 UEFI

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      In the latest phase of the conversion process, we try to update the GRUB2 configuration.
      On UEFI machines we call the grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg, which has the call failing and yields the following output:

      [2024-11-29T11:02:51+0000] TASK - [Convert: Update GRUB2 configuration] ******************************
Backing up /boot/grub2/grub.cfg.
[2024-11-29T11:02:51+0000] DEBUG - Copied /boot/grub2/grub.cfg to /var/lib/convert2rhel/backup/0894275faee72b8009228fe8fa32f6fe/grub.cfg.
Backing up /boot/grub2/grubenv.
[2024-11-29T11:02:51+0000] DEBUG - Copied /boot/grub2/grubenv to /var/lib/convert2rhel/backup/0894275faee72b8009228fe8fa32f6fe/grubenv.
[2024-11-29T11:02:51+0000] DEBUG - Calling command '/usr/sbin/grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg'
[2024-11-29T11:02:51+0000] DEBUG - Output of the grub2-mkconfig call:
Running `grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg' will overwrite the GRUB wrapper.
Please run `grub2-mkconfig -o /boot/grub2/grub.cfg' instead to update grub.cfg.
GRUB configuration file was not updated.

WARNING - GRUB2 config file generation failed.

UPDATE_GRUB has succeeded

      Moreover, the post-conversion report message (particularly the Remediation) gets confusing as it's suggesting to do the exact thing which caused the warning.
      The Warning message is also weirdly formatted (weird quotes/backticks)

      (WARNING) UPDATE_GRUB::GRUB2_CONFIG_CREATION_FAILED - The grub2-mkconfig call
    failed to complete
     Description: The grub2-mkconfig call failed with output: 'Running
`grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg' will overwrite the GRUB
wrapper.
    Please run `grub2-mkconfig -o /boot/grub2/grub.cfg' instead to update
grub.cfg.
    GRUB configuration file was not updated.
    '. The conversion will continue but there may be issues with the current
grub2 config and image formats.
     Diagnosis: N/A
     Remediations: If there are issues with the current grub2 config and image
we recommend manually re-generating them with 'grub2-mkconfig -o 
/boot/efi/EFI/redhat/grub.cfg' and'grub2-install [block device, e.g. /dev/sda]'.

      Overall, the conversion finishes successfully, and the system is bootable without any apparent problems.

       

      Full log available here

       

              ddiblik@redhat.com Daniel Diblik
              ddiblik@redhat.com Daniel Diblik
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