[Bug 1891505] Re: LXD appliance image needs to follow the 4.0 track

[Timo Aaltonen]

Hello Łukasz, or anyone else affected,

Accepted livecd-rootfs into bionic-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.525.47 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
bionic to verification-done-bionic. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-bionic. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: livecd-rootfs (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-bionic

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https://bugs.launchpad.net/bugs/1891505

Title:
  LXD appliance image needs to follow the 4.0 track

Status in livecd-rootfs package in Ubuntu:
  Invalid
Status in livecd-rootfs source package in Bionic:
  Fix Committed

Bug description:
  [Impact]

  Per definition of the appliance, we need to follow the 4.0 LTS track instead of 'latest', which is default. I originally assumed that the model assertion will be self-contained and has everything that's needed, but it seems that required-snaps for UC18 are not allowed to have custom tracks set (this is only supported for UC20).
  So to make things work, we need to work-around it by adding the custom lxd snap track via livecd-rootfs.

  [Test Case]

  Perform a -proposed enabled ubuntu-appliance cdimage build for the lxd
  appliance and confirm via the manifest that the lxd snap is taken from
  the right track.

  [Regression Potential]

  If anything, all possible regressions are in ubuntu-core image builds,
  like invalid extra snaps could be installed or the builds could start
  failing.

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