[Bug 2112229] Re: failure during update package grub-efi-amd64-signed with RAID1

[Mate Kukri]

ESP on RAID is not supported in Ubuntu GRUB because we don't create such
configurations.

Unlike other distros, there is also no reason to do this because we have
multi ESP support in the GRUB package.

You can just RAID your regular filesystems and have two (or N) ESPs, one
on each disks and GRUB can install itself to both. This is what the
installer does, and what I recommend.

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https://bugs.launchpad.net/bugs/2112229

Title:
  failure during update package grub-efi-amd64-signed with RAID1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  I use mdadm RAID1 for /boot/efi partition.

  nvme1n1p1 259:1    0   512M  0 part  
  └─md1       9:1    0 511.9M  0 raid1 /boot/efi
  nvme0n1p1 259:5    0   512M  0 part  
  └─md1       9:1    0 511.9M  0 raid1 /boot/efi

  There was a question about where to install GRUB with two checkboxes: nvme1n1p1, nvme0n1p1.
  I chose nvme1n1p1.

  ProblemType: Package
  DistroRelease: Ubuntu 24.04
  Package: grub-efi-amd64-signed 1.202.5+2.12-1ubuntu7.3
  ProcVersionSignature: Ubuntu 6.11.0-24.24~24.04.1-generic 6.11.11
  Uname: Linux 6.11.0-24-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.28.1-0ubuntu3.6
  Architecture: amd64
  CasperMD5CheckResult: pass
  Date: Sat May 31 11:40:06 2025
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32
  InstallationDate: Installed on 2024-09-04 (269 days ago)
  InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 (20240827.1)
  Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal, 3.12.3-0ubuntu2
  PythonDetails: N/A
  RebootRequiredPkgs: Error: path contained symlinks.
  RelatedPackageVersions:
   dpkg 1.22.6ubuntu6.1
   apt  2.8.3
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.202.5+2.12-1ubuntu7.3 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32
  UpgradeStatus: No upgrade log present (probably fresh install)

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