[Bug 1417909] Re: Container fails to start with error mounting /sys/fs/cgroup

[Stéphane Graber]

Just re-read through this whole bug.

It looks like what broke your setup is actually a bugfix in LXC wrt
config inheritance.

Your config contains:
 - lxc.mount.auto =
 - lxc.mount.auto = cgroup:mixed

This instructs LXC (and that wasn't implemented right at first) to wipe all of lxc.mount.auto, and then set cgroup:mixed.
Doing so unsets the default which did contain sys:mixed, causing the breakage you had.

So the issue is that LXC actually does what you ask it to do now :)

** Changed in: lxc (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1417909

Title:
  Container fails to start with error mounting /sys/fs/cgroup

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