[Bug 1827532] [NEW] GRUB boot menu displays after running system-update.target

[Mario Limonciello]

Public bug reported:

As part of a discussion in upstream fwupd, we have been enabling support
to call fwupd in an "offline" mode.  This means a clean system booted
state.

To accomplish this the systemd offline update functionality is used:
https://www.freedesktop.org/software/systemd/man/systemd.offline-
updates.html


We discovered that on Ubuntu after the system-update.target is complete (success or fail) that the next boot we'll see the GRUB menu.

I believe this is caused by the lack of running grub-initrd-
fallback.service in the system-update.target.

This should likely be fixable by symlinking it into /lib/systemd/system
/system-update.target.wants to include it with system-update.target.

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1827532

Title:
  GRUB boot menu displays after running system-update.target

Status in grub2 package in Ubuntu:
  New

Bug description:
  As part of a discussion in upstream fwupd, we have been enabling
  support to call fwupd in an "offline" mode.  This means a clean system
  booted state.

  To accomplish this the systemd offline update functionality is used:
  https://www.freedesktop.org/software/systemd/man/systemd.offline-
  updates.html

  
  We discovered that on Ubuntu after the system-update.target is complete (success or fail) that the next boot we'll see the GRUB menu.

  I believe this is caused by the lack of running grub-initrd-
  fallback.service in the system-update.target.

  This should likely be fixable by symlinking it into
  /lib/systemd/system/system-update.target.wants to include it with
  system-update.target.

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