[Bug 2013082] Re: EFI boot does not detect RAID.

[Julian Andres Klode]

UEFI boot uses

* An EFI system partition. This cannot be on the RAID, there must be at least one ESP per drive or just one ESP at all (accessed by UEFI)
* The /boot partition - this can be inside the RAID (accessed by grub)
* Other partitions - can be inside the RAID (accessed by kernel)

It's not clear to me what your issue is and how it relates to UEFI
booting, or how mdadm should behave as I do not do any RAID. mdadm is
not part of grub or UEFI, any output from it will be meaningless as long
as the rules are being followed.

** Changed in: grub2 (Ubuntu)
       Status: New => Incomplete

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Title:
  EFI boot does not detect RAID.

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  I installed ubuntu 22.04.2 in a raids structure.
  The grub.cfg files seem fine.

  Content of EFI grub.cfg is

  search.fs_uuid b9c1881f-a0b5-4fe3-b5ea-eb3d4567cfec root mduuid/d9442342aaf72e055793a60e5ed333e4 
  set prefix=($root)'/boot/grub'
  configfile $prefix/grub.cfg

  
  The boot crashes.
  But a can do this command
  mdadm --examine --scan
  The response is
  mdadm no device listed in /etc/mdadm/mdadm.conf

  
  I suspect that the EFI part does not know how to correctly assemble the RAID because during the 

  I don't know how to transmit the crash at this precise moment.

  The workaround found is to make a standard EXT4 partition dedicated to
  booting. However, that seems abnormal to me then the EFI part proposes
  to boot directly on the RAID if it is not possible.

  Thank you for doing what is necessary to have something coherent.
  Good day.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: evince 42.3-0ubuntu3
  ProcVersionSignature: Ubuntu 5.15.0-69.76-generic 5.15.87
  Uname: Linux 5.15.0-69-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu82.3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Mar 28 14:58:24 2023
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: evince
  UpgradeStatus: No upgrade log present (probably fresh install)

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