Ubuntu 14.04 failing to deploy on UEFI

[Stéphane Graber]

One of our daily tests uses trusty with hwe-x to test upgrades.

We've now migrated over to using LXD backed VMs connected to MAAS and so moved over to UEFI.
MAAS fails deployment in such an environment when installing grub.

I'm not sure how much you still care about 14.04 given that it's only under ESM but figured I'd report it anyway. For now we've disabled those tests as we have barely any user left on 14.04 and not much is changing on that version given it's EOL.

This is on the edge snap of MAAS 2.8.

[Lee Trager (ltrager)]

This was my fault. When I updated Curtin for CentOS 8 I used realpath as its part of coreutils in Xenial+. I forgot that it is a separate package in Trusty and Precise. When Curtin installs GRUB it does so chrooted into the environment being deployed. The Curtin version being used comes from MAAS so we could fix this without touching the Trusty archives.

[Ryan Harper (raharper)]

Note, this patch is not needed in master;

7310b4fe614651640aecfe1cea67a0a5a1594224

We've refactored the grub install shell code into python.

I need to push up the merge which drops the shell code but it's not in use in master (and we're SRU'ing this now).

[Ryan Harper (raharper)]

https://code.launchpad.net/~raharper/curtin/+git/curtin/+merge/385226