[Bug 1466150] Re: grub-install breaks when ESP is on raid

[Georg Sauthoff]

Tony Middleton (@ximera) wrote
(https://bugs.launchpad.net/ubuntu/+source/grub-
installer/+bug/1466150/comments/36):

> Since focal the change I originally asked for at the beginning of this
thread has now been made. > If you set up multi efi partitions, not
raided, when you run "dpkg-reconfigure grub-efi-amd64" the system asks
which efi partitions you wish to use. You can specify more than one and
it then installs to each of them. It remembers the choice next time grub
is updated via apt.


I've just tested this and it works as described.

However, grub-efi-amd64 wasn't installed on my freshly installed 20.04
Ubuntu system.

Installed was grub-efi-amd64-signed.

And 'dpkg-reconfigure grub-efi-amd64-signed' didn't prompt for anything!

So, I installed grub-efi-amd64 and removed grub-efi-amd64-signed for the
test.

---

Seth Arnold @seth-arnold wrote
(https://bugs.launchpad.net/ubuntu/+source/grub-
installer/+bug/1466150/comments/39):

> The tooling now making it easy to install to multiple partitions is a
definite improvement over the previous state.

I agree, it's an improvement. However, while searching for Ubuntu's
solution to the making-ESP-somehow-redundant problem I couldn't find any
documentation that points to this tooling/approach.

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https://bugs.launchpad.net/bugs/1466150

Title:
  grub-install breaks when ESP is on raid

Status in grub-installer package in Ubuntu:
  Triaged

Bug description:
  I run a server with mirrored (RAID1) disks using grub-efi.

  Root and /boot and /boot/grub are on mirrored partitions.

  I have EFI partitions on both disks but it is not possible to RAID1
  these as they are FAT32.  On an EFI system grub-install will only
  install to one of the EFI partitions and so after running install-grub
  you have to remember to copy the EFI file across.

  Could grub configuration and grub-install be amended to automatically
  install to multiple disks?

  Searching around there seem to be many people asking this question
  without any elegant solution.

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