[Bug 2036725] Re: LXD snap not being installed from the right channel when running unminimize

[Launchpad Bug Tracker]

This bug was fixed in the package livecd-rootfs - 2.828.3

---------------
livecd-rootfs (2.828.3) lunar; urgency=medium

  [ Heinrich Schuchardt ]
  * arm: fix console parameter for ARM cloud-images (LP: #2036730)

livecd-rootfs (2.828.2) lunar; urgency=medium

  [ Steve Langasek ]
  * The chroot tmpfs mount should only be /var/lib/apt/lists, not
    /var/lib/apt; the latter breaks changes to /var/lib/apt/extended_states.
    (LP: #2036195).

livecd-rootfs (2.828.1) lunar; urgency=medium

  * Fix unminimize to correctly list packages. (LP: #1996489)
  * Install LXD snap from stable/ubuntu-<version> channel. (LP: #2036725)

 -- Steve Langasek <steve.langasek at ubuntu.com>  Thu, 07 Dec 2023
08:51:51 -0800

** Changed in: livecd-rootfs (Ubuntu Lunar)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2036725

Title:
  LXD snap not being installed from the right channel when running
  unminimize

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Jammy:
  Fix Committed
Status in livecd-rootfs source package in Lunar:
  Fix Released

Bug description:
  [Impact]
  ========

  There's a step in `unminimize` where it installs the LXD snap. The
  problem is that it doesn't mention any channel where to install it
  from. So often it happens that we have the LXD snap on 20.04 or 22.04
  from the latest/stable channel (as that's the default!).

  However, we should be installing this from stable/ubuntu-20.04 or
  stable/ubuntu-22.04 (or equivalent) channel.

  [Test Plan]
  ===========

  $ lxc launch ubuntu-minimal-daily:jammy jtemp --vm
  $ lxc shell jtemp
  # apt update
  # unminimize
  # snap list | grep 'lxd' | awk '{print $4}'

  You'll see that it's NOT from stable/ubuntu-$VERSION, whereas it
  should be. ;)

  [Where Problems Could Occur]
  =============================

  There's very smol room for error especially when the patch only
  introduces the following to the snap install call:
  --channel="stable/ubuntu-$VERSION_ID"

  But things might behave differently IFF someone has tampered their
  /etc/os-release OR/AND fiddled with the unminimize script to do a
  different thing. :)

  [OG Bug Report]
  ===============

  In the past, when running unminimize, we'd directly do:
  snap install lxd
  (cf: https://git.launchpad.net/livecd-rootfs/tree/live-build/auto/build#n322)

  which defaults to the latest/stable channel. However, whilst working
  on enhancing unminimize, it was observed that we install this snap
  from the stable/ubuntu-<version> channel instead.

  This was also noted as a failure when running the CTF tests:
  `lxd installed from latest/stable, not stable/ubuntu-23.10`

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