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

[Tony Middleton]

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.

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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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