[Bug 1515463] [NEW] Broken juju LXC deployments

[Brad Marshall]

Public bug reported:

I've just tried using juju to deploy to a container with trusty-proposed
repo enabled, and I get an error message about 'failed to retrieve the
template to clone'.  The underlying error appears to be:

  tar --numeric-owner -xpJf /var/cache/lxc/cloud-trusty/ubuntu-14.04-server-cloudimg-amd64-root.tar.gz;
  xz: (stdin): File format not recognized; tar: Child returned status 1; tar:
  Error is not recoverable: exiting now;

This seems to be fairly obvious, trying to use xz on a tar.gz file is
never going to work.

The change appears to be from
https://github.com/lxc/lxc/commit/27c278a76931bfc4660caa85d1942ca91c86e0bf,
it assumes everything passed into it will be a .tar.xz file.

This appears to be a conflict between the template expecting a .tar.xz
file, and juju providing it a .tar.gz file.  You can see what juju is
providing from:

  $ ubuntu-cloudimg-query trusty released amd64 --format %{url}
  https://cloud-images.ubuntu.com/server/releases/trusty/release-20151105/ubuntu-14.04-server-cloudimg-amd64.tar.gz

>From the juju deployed host:
$ apt-cache policy lxc-templates
lxc-templates:
  Installed: 1.0.8-0ubuntu0.1
  Candidate: 1.0.8-0ubuntu0.1
  Version table:
 *** 1.0.8-0ubuntu0.1 0
        500 http://archive.ubuntu.com/ubuntu/ trusty-proposed/main amd64 Packages
        100 /var/lib/dpkg/status

>From the host running juju:
$ apt-cache policy juju-core
juju-core:
  Installed: 1.22.8-0ubuntu1~14.04.1
  Candidate: 1.25.0-0ubuntu1~14.04.1~juju1
  Version table:
     1.25.0-0ubuntu1~14.04.1~juju1 0
        500 http://ppa.launchpad.net/juju/proposed/ubuntu/ trusty/main amd64 Packages
 *** 1.22.8-0ubuntu1~14.04.1 0
        400 http://archive.ubuntu.com/ubuntu/ trusty-proposed/universe amd64 Packages
        100 /var/lib/dpkg/status

All machine involved are running trusty:

$ lsb_release -rd
Description:    Ubuntu 14.04.3 LTS
Release:        14.04

Please let me know if you need any more information.

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


** Tags: canonical-bootstack

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https://bugs.launchpad.net/bugs/1515463

Title:
  Broken juju LXC deployments

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