https://bugzilla.suse.com/show_bug.cgi?id=1183247 https://bugzilla.suse.com/show_bug.cgi?id=1183247#c13 --- Comment #13 from James Fehlig --- FYI, Cole posted a patch to fix the NoMachineForPID issue https://listman.redhat.com/archives/libvir-list/2021-October/msg00157.html It works fine with hybrid mode in my testing. While testing the patch with V2 only, I noticed the following unrelated problem virsh -c lxc:/// create lxc-test.xml error: Failed to create domain from lxc-test.xml error: internal error: Unable to find 'memory' cgroups controller mount From the libvirtd log 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectPlacement:199 : group=0x7f65580081a0 path= controllers= selfpath=/system.slice/libvirtd.service 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'cpu' present=no 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'cpuacct' present=yes 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'cpuset' present=no 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'memory' present=no 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'devices' present=yes 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'freezer' present=no 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'io' present=no 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'net_cls' present=no 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'perf_event' present=no 2021-10-07 20:16:00.521+0000: 4131: debug : virCgroupV2DetectControllers:335 : Controller 'name=systemd' present=no 2021-10-07 20:16:00.521+0000: 4131: error : virLXCProcessStart:1236 : internal error: Unable to find 'memory' cgroups controller mount Hmm, what controllers are along the path to /system.slice/libvirtd.service? # cat /sys/fs/cgroup/cgroup.controllers cpuset cpu io memory hugetlb pids rdma misc # cat /sys/fs/cgroup/system.slice/cgroup.controllers pids # cat /sys/fs/cgroup/system.slice/libvirtd.service/cgroup.controllers pids So no memory controller, which along with cpuacct and devices, are required by the lxc driver. I'm surprised there have been no complaints from other distros. Could there be cgroup.subtree_control differences between distros? -- You are receiving this mail because: You are on the CC list for the bug.