[Bug 1831631] Re: grub should be pre-installed on images

[Michael Hudson-Doyle]

On Tue, 4 Jun 2019 at 17:25, Steve Langasek <steve.langasek at canonical.com>
wrote:

> Pros:
>  - installing them in the squashfs is faster than installing them at build
> time
>  - if we believe they should always be installed, it simplifies the
> installer logic
>    - except that we're also converging on a single installer code base, so
> it doesn't simplify things too much to have it in livecd-rootfs instead of
> in curtin (and curtin still has to trigger grub-install to the target
> disks, either by replaying the package postinsts on the target or by
> manually calling grub-install)
>
> Cons:
>  - this moves us farther away from being able to converge the server
> squashfs as used by subiquity with the lxd squashfs published by cloud
> images.  (we don't currently have a path forward for how to build this once
> and consume it in both places, but nevertheless I don't like that we
> currently build it twice.)
>

I guess we could approach this with layers / seeds? So you'd have one layer
("server-core" "server-base" "server-container"? all the names you might
use for this are horribly overloaded) that would be the lxd image, and
another layer ("server-machine"?) that would contain things you need for
installing a bootable system, so grub-pc, grub-efi-amd64-bin on amd64,
maybe initramfs stuff and subiquity would install from the server-machine
layer by default.

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https://bugs.launchpad.net/bugs/1831631

Title:
  grub should be pre-installed on images

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  given that grub are now co-installable by default, shouldn't they be
  preinstalled in the squashfs?

  it seems like grub-efi-amd64-bin & signed are not in the squashfs.

  I guess that affects all of ubiquity & subiquity images.

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