@glaubits, cgmanager is not for managing but for delegating cgroups, which systemd does not yet provide. (I'd like to work toward that with the systemd community) When that is not needed then cgmanager can indeed be removed - however cpusets still end up being mounted by systemd itself.
@bharata-rao My reading of kernel/cpusets.c comments is that the new cpuset.effective_cpus is supposed to give you what you want. If you've written 0-64 into cpuset.cpus, and some cpus are removed, then cpuset.cpus won't be changed, only cpuset.effective_cpus. When you plug those cpus back in, then they should show back up in cpuset.effective_cpus. I dont' have any hardware to test on, and couldn't get libvirt setvcpus to do this for me, but could you please test on a ubuntu 15.04 host (which should have a new enough kernel to have cpuset.effective_cpus)? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1392176 Title: mounts cgroups unconditionally which causes undesired effects with cpu hotplug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cgmanager/+bug/1392176/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
