[Bug 1923635] Re: ubuntu must support upgrading images with grub in removable path

[Steve Langasek]

Why is this a "must"?  After the recent changes to the cloud images, the
only places where we are installing grub to the removable path are the
install images, and grub doesn't get upgraded on those.

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https://bugs.launchpad.net/bugs/1923635

Title:
  ubuntu must support upgrading images with grub in removable path

Status in grub2 package in Ubuntu:
  New
Status in shim package in Ubuntu:
  New
Status in shim-signed package in Ubuntu:
  New

Bug description:
  ubuntu must support upgrading images with grub in removable path

  Currently whilst we install shim into removable path, we never upgrade
  grubx64.efi in the removable path.

  This leads to inconsistent behavior, where upgraded shim will boot
  grubx64.efi from /boot/grubx64.efi which might lack sbat sections and
  thus will not boot.

  Either we need to support upgrade grubx64.efi in /boot/*.efi, or
  remove it whenever we install new shim into /boot/bootx64.efi.

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