[lxc-users] Cannot start unprivileged containers after first provisioning Ubuntu 14.04 instance

[Justin Hume]

>>* I've tried things suggested (restart cgmanager etc.)  in this thread, with
*>>* no result. The only additional info I've found is a discrepancy of the
*>>* contents of the "/proc/self/cgroup" file before and after restart of the
*>>* instance.
*>> >>* Before:
*>>* 11:hugetlb:/
*>>* 10:perf_event:/
*>>* 9:blkio:/
*>>* 8:freezer:/
*>>* 7:devices:/
*>>* 6:memory:/
*>>* 5:cpuacct:/
*>>* 4:cpu:/
*>>* 3:cpuset:/
*>>* 2:name=systemd:/user/1000.user/1.session
*>> >>* After:
*>>* 11:hugetlb:/user/1000.user/1.session
*>>* 10:perf_event:/user/1000.user/1.session
*>>* 9:blkio:/user/1000.user/1.session
*>>* 8:freezer:/user/1000.user/1.session
*>>* 7:devices:/user/1000.user/1.session
*>>* 6:memory:/user/1000.user/1.session
*>>* 5:cpuacct:/user/1000.user/1.session
*>>* 4:cpu:/user/1000.user/1.session
*>>* 3:cpuset:/user/1000.user/1.session
*>>* 2:name=systemd:/user/1000.user/1.session
*>
> so 'After' unprivileged container start will work.
>
>>* It looks like required cgroups have not been delegated? I don't have a deep
*>>* understanding of cgroups, or of how cgroups and LXC interact, so the answer
*>>* may be obvious to someone else. Thanks in advance for your time,
*>
> What exactly is your question?

Sorry, should have been explicit. I want to understand why I am unable
to start an unprivileged container without rebooting the system after
installing LXC on a fresh 14.04 instance.

The documentation for unprivileged containers does not mention the
need for a reboot. Naturally it could be something unrelated to LXC
but I did nothing but create the instance, update it, install LXC and
configure unprivileged containers. I'd like to track down the issue if
you could point me in the right direction or suggest why this might be
occurring.
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