[lxc-devel] [PATCH 1/1] cgmanager: use absolute cgroup path to switch cgroups at attach

[Serge Hallyn]

Quoting S.Çağlar Onur (caglar at 10ur.org):
> On Fri, May 2, 2014 at 12:14 PM, Serge Hallyn <serge.hallyn at ubuntu.com> wrote:
> > Quoting Serge Hallyn (serge.hallyn at ubuntu.com):
> >> If an unprivileged user does 'lxc-start -n u1' in one
> >> login session, followed by 'lxc-attach -n u1' in another
> >> session, the attach will fail if the sessions are in different
> >> cgroups.  The same is true of lxc-cgroup commands.
> >>
> >> Address this by using the GetPidCgroupAbs and MovePidAbs
> >> which work with the containers' cgroup path relative to
> >> the cgproxy.
> >>
> >> Since GetPidCgroupAbs is new to api version 3 in cgmanager,
> >> use the old method if we are on an older cgmanager.
> >>
> > I should have added a
> >
> > Reported-by: "S.Çağlar Onur" <caglar at 10ur.org>
> 
> :) I would love to add Tested-by as well and for that I also need
> latest cgmanager right?

Yeah, and you have to have the new libcgmanager-dev installed before
bulding lxc so configure can find the new cgmanager function.

utopic does have the new cgmanager, so you can upgrade a vm to
that then build lxc in there.