Hm, I found a bug in my last version of this patch. Freshly booted machines which had not mounted the cgroupfs had all the hierarchies as 0, causing all cgroups to get mounted onto a single directory. I can work around this by detecting this scenario. However, I wonder if I am actually seeing a bug in LXC. On my 12.04 hosts spawning 12.04 containers with the nesting.conf include, the cgroupfs gets automounted inside the container even without this package. This is not the case on 16.04 hosts. I'm currently using LXC 2.0.6.
RE: name=systemd, I had modified an older version of our scripts to mount name=systemd, because that was how it showed up in /proc/self/cgroups, but everywhere I see the systemd cgroup mentioned on the internet has it mounted at /sys/fs/cgroup/systemd, so I guess that's an implementation detail I just have to deal with. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to cgroup-lite in Ubuntu. https://bugs.launchpad.net/bugs/1668724 Title: fails to mount cgroupfs inside containers running on 16.04 Status in cgroup-lite package in Ubuntu: Triaged Status in cgroup-lite source package in Precise: New Status in cgroup-lite source package in Trusty: New Status in cgroup-lite source package in Xenial: New Status in cgroup-lite source package in Yakkety: New Bug description: I need to run nested Ubuntu 12.04 and 14.04 containers on 16.04 hosts, and have noticed that the cgroups-mount script for mounting the cgroups inside the containers has stopped working. This is because systemd now comounts multiple controllers on a single hierarchy, which prevents mounting them individually inside the container. =========== SRU Justification ================ Impact: nested containers fail to start Reproduce: create a root owned container; install lxc and cgroup-lite; create a container, and try to start it. Starting will fail if cgroup-lite is running in the first level container without this patch. Regression potential: should be low, it's possible that the regexp is simply wrong for some cases. =============================================== To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cgroup-lite/+bug/1668724/+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
