[lxc-users] using cgroups

[Serge E. Hallyn]

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