** Description changed: + [Impact] + + * When a container is presented with a unified cgroup hierarchy, which + is not properly delegated, systemd should not attempt (and fail) to use. + This improves compatibility of xenial containers running on unified + cgroup hierarchy hosts. + + [Test Case] + + * Xenial containers should boot, with non-writable unified cgroup + hierarchy hosts. + + [Regression Potential] + + * unified cgroup hierarchy is not in use by default on xenial hosts, + thus this is forward compatibility improvment with e.g. bionic hosts + running xenial containers. + + [Other Info] + + * Original bug report + Hey everyone, Current systemd versions all fail when the unified cgroup hierarchy is not-writable. This is especially problematic in containers where the systemd administrator might decide to not delegate the unified hierarchy or when running with a liblxc driver that doesn't yet know how to handle the unified cgroup hierarchy. I've pushed patches to systemd upstream that let systemd ingnore the non-delegated unified hierarchy. The relevant commits are: e07aefbd675b651f8d45b5fb458f2747b04d6e04 2d56b80a1855836abf1d7458394c345ad9d55382 1ff654e28b7b8e7d0a0be33522a84069ac6b07c0 These patches will be in 236 but should be backported from xenial upwards. Christian
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1734410 Title: systemd: handle undelegated cgroup2 hierarchy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1734410/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
