[lxc-users] using cgroups

[rob e]

hi,
I'm experiencing the same problem. I use "lxc.cgroup" to constrain 
resource usage and to provide access to devices

in trying to re-use containers established under Trusty, I find that 
lxc.cgroup clauses prevent the container starting

furthermore, if I create a new "test" container on Xenial, it will start 
and run ok until I start adding lxc.cgroup clauses, at which point it 
will no longer start.

LXC is installed. LXD is NOT installed. CGMANAGER is installed. All 
packages are current from Xenial LTS

Is there anything I can do to help pin this down ? Will a test conducted 
in a KVM based VM be valid / useful ?

Rob

On 27/06/16 11:41, Serge E. Hallyn wrote:
> Quoting Mike Wright (nobody at nospam.hostisimo.com):
>> On 06/26/2016 01:01 PM, Serge E. Hallyn wrote:
>>> Quoting Mike Wright (nobody at nospam.hostisimo.com):
>>>> Hi all,
>>>>
>>>> cgmanager and cgmanager-utils are installed.
>>>>
>>>> Environment is ubuntu-xenial, lxc-2.0.1, cgm-0.29
>>> why 0.29?  xenial should have 0.39-2ubuntu5.  I'm on xenial
>>> using 0.41-2~ubuntu16.04.1~ppa1 from the ubuntu-lxc
>>> ppa.
>> Thanks for the response, Serge.
>>
>> This is interesting.
>>
>> sudo apt install -s cgmanager
>>    cgmanager is already the newest version (0.39-2ubuntu5)
>>
>> cgm --version
>>    0.29
>>
>> Added ppa:ubuntu-lxc/stable, updated and upgraded.
>>
>> sudo apt install -s cgmanager
>>    cgmanager is already the newest version (0.41-2~ubuntu16.04.1~ppa1)
>>
>> cgm --version
>>    0.29
> Oh, huh.  Yeah, that seems to be a cgmanager bug :)
>
>>> 0 ✓ serge at sl ~ $ sudo cgm create all me
>>> [sudo] password for serge:
>>> 0 ✓ serge at sl ~ $ sudo cgm chown all me $(id -u) $(id -g)
>>> 0 ✓ serge at sl ~ $
>>>
>>> Now, I'm not running systemd so it's possible systemd is
>>> doing something unorthodox again.  But really it sounds
>>> like a bug that shouldve been fixed in 0.27-0ubuntu6 -
>>> where cgmanager didn't deal well with comounted controllers.
>> Still failing at cgm chown...
>>
>> Ideas on how would I go about determining the problem?
> Edit /lib/systemd/system/cgmanager.service and add '--debug' to the
> end of the ExecStart line.  Do 'systemctl daemon-reload' followed
> by 'systemctl restart cgmanager'.  Then do the above again, and
> do 'journalctl -u cgmanager' and list the results here.  Also
> show the contents of /proc/self/cgroup and /proc/self/mountinfo.
> That should give us what we need.
>
> thanks,
> -serge
> _______________________________________________
> lxc-users mailing list
> lxc-users at lists.linuxcontainers.org
> http://lists.linuxcontainers.org/listinfo/lxc-users