[lxc-users] Problems with user sessions inside a Ubuntu Desktop Container

[Alain St-Denis]

Hi,

I experience the exact same problem. Similar setup (wily host, elementary freya container). No user session is created when I login the desktop so polkit won't grant elevated privileges.

In the container, /proc/1/cgroup shows:

10:cpu,cpuacct:/lxc/topaze
9:freezer:/lxc/topaze
8:devices:/lxc/topaze
7:memory:/lxc/topaze
6:cpuset:/lxc/topaze
5:net_cls,net_prio:/lxc/topaze
4:hugetlb:/lxc/topaze
3:perf_event:/lxc/topaze
2:blkio:/lxc/topaze
1:name=systemd:/lxc/topaze

In the container auth.log, I see those lines:

Jan 24 15:20:09 topaze systemd-logind[1739]: cgmanager: cgm_list_children for controller=systemd, cgroup_path=lxc/topaze/user failed: invalid request
Jan 24 15:20:09 topaze systemd-logind[1739]: New seat seat0.
Jan 24 15:20:09 topaze systemd-logind[1739]: Preallocating VTs...
Jan 24 15:20:09 topaze systemd-logind[1739]: systemd-logind running as pid 1739
Jan 24 15:20:11 topaze lightdm: pam_systemd(lightdm-greeter:session): Failed to create session: Invalid argument

The container runs cgproxy.

On the host, cgmanager reports:

jan 24 15:20:09 opale cgmanager[952]: cgmanager: Invalid path /run/cgmanager/fs/none,name=systemd//lxc/topaze/lxc/topaze/user (No such file or directory)
jan 24 15:20:09 opale cgmanager[952]: cgmanager:list_children_main: Could not determine the requested cgroup (systemd:lxc/topaze/user)
jan 24 15:20:09 opale cgmanager[952]: cgmanager: Error getting children for systemd:lxc/topaze/user for pid 2095

Does anybody have a hint on what causes this cgroup path duplication (lxc/topaze/lxc/topaze)? I suspect it may have something to do with the issue.

Thanks
Alain.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linuxcontainers.org/pipermail/lxc-users/attachments/20160125/d7f1c282/attachment.html>