Ok, I think I may have clue. You're using lxcfs in version 2.0.4. This version of lxcfs does not handle uninitialized cpuset hierarchies which can happen when systemd does not allocate a per-user cgroup in the cpuset controller. I fixed this in lxcfs 2.0.5 by reimplementing the cgroup handling code in the pam module that is shipped with it. I'm not sure whether Stéphane has backported lxcfs 2.0.5 to 16.04. In case he hasn't, you can grab lxcfs 2.0.5 from our stable ppa:
sudo add-apt-repository ppa:ubuntu-lxc/lxcfs-stable sudo apt-get update and then install lxcfs + libpam-cgfs, reboot and you should be good to go. Please report back whether this worked. If it doesn't, please attach the same information I requested before again, so I can debug. :) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1649582 Title: lxc-start fails to start a unprivileged container - cgroup permissions Status in lxc package in Ubuntu: New Bug description: I was following this simple getting start tutorial: https://linuxcontainers.org/lxc/getting-started/ Created using: lxc-create -t download -n ci -- -d ubuntu -r trusty -a amd64 But it always fails at: lxc-start -n ci -d I even tried another Ubuntu 14.04 but didn't work too for same problem. Below the debug log got from running `lxc-start` ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: lxc 2.0.5-0ubuntu1~ubuntu16.04.3 ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30 Uname: Linux 4.4.0-53-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia ApportVersion: 2.20.1-0ubuntu2.2 Architecture: amd64 CurrentDesktop: XFCE Date: Tue Dec 13 14:05:44 2016 InstallationDate: Installed on 2016-07-09 (156 days ago) InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) PackageArchitecture: all SourcePackage: lxc UpgradeStatus: No upgrade log present (probably fresh install) defaults.conf: lxc.network.type = veth lxc.network.link = lxcbr0 lxc.network.flags = up lxc.network.hwaddr = 00:16:3e:xx:xx:xx To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1649582/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
