touch-packages team mailing list archive

[Stéphane Graber <stgraber@xxxxxxxxxxxx>]

Oh yeah, I can see how this is going to be a problem.

I'll look at changing the code path to use auto-detected compression
rather than specific one.

The reason for this change in the first place is that the .tar.gz images
will be deprecated in favor for .tar.xz, so I'd recommend JuJu also
switch to .tar.xz at some point soon (I don't believe the cloud team has
set a timeframe for phasing out tar.gz yet, but it's planned).

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

Title:
  Broken juju LXC deployments

Status in lxc package in Ubuntu:
  New

Bug description:
  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.

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