[Bug 1543697] [NEW] Unprivileged nested Xenial container will not start inside a privileged Xenial container

[Christopher Townsend]

Public bug reported:

I have a host where I create a privileged Xenial container.  Inside that
privileged container, I create an unprivileged Xenial container using
the ubuntu user in the privileged container.  When I try starting the
unprivileged container, I get the following error:

      lxc-start 20160209133200.970 INFO     lxc_cgroup - cgroup.c:cgroup_init:65 - cgroup driver cgroupfs initing for test-lxc
      lxc-start 20160209133200.971 ERROR    lxc_cgfs - cgfs.c:cgfs_init:2248 - cgroupfs failed to detect cgroup metadata
      lxc-start 20160209133200.971 ERROR    lxc_start - start.c:lxc_spawn:1023 - failed initializing cgroup support
      lxc-start 20160209133200.971 ERROR    lxc_start - start.c:__lxc_start:1273 - failed to spawn 'test-lxc'

've tried both Trusty host w/ ppa:ubuntu-lxc/lxc-stable installed and a
Xenial host with the same results.   I've also tried using ppa:ubuntu-
lxc/daily in the privileged Xenial LXC.

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

** Summary changed:

- Unprivileged nested container will not start inside a privileged container
+ Unprivileged nested Xenial container will not start inside a privileged Xenial container

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https://bugs.launchpad.net/bugs/1543697

Title:
  Unprivileged nested Xenial container will not start inside a
  privileged Xenial container

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