Package: systemd Version: 232-25+deb9u4
Description of problem: After a 'systemctl daemon-reload' followed by any service 'systemctl restart xxx' the blkio, cpu,cpuacct、memory cgroup path changed. Steps to Reproduce: 1. Create and launch a basic VM 2. Check that the cgroups are mapped properly for example with 'virsh memtune VM_NAME' 3. Execute 'systemctl daemon-reload' 4. Restart _any_ service on your machine, such as : systemctl restart libvirtd before: 10:perf_event:/machine/qemu-1462-zyjtest.libvirt-qemu 9:blkio:/machine/qemu-1462-zyjtest.libvirt-qemu 8:cpu,cpuacct:/machine/qemu-1462-zyjtest.libvirt-qemu/emulator 7:memory:/machine/qemu-1462-zyjtest.libvirt-qemu 6:freezer:/machine/qemu-1462-zyjtest.libvirt-qemu 5:pids:/system.slice/libvirtd.service 4:devices:/machine/qemu-1462-zyjtest.libvirt-qemu 3:cpuset:/machine/qemu-1462-zyjtest.libvirt-qemu/emulator 2:net_cls,net_prio:/machine/qemu-1462-zyjtest.libvirt-qemu 1:name=systemd:/system.slice/libvirtd.service after results: 10:perf_event:/machine/qemu-1462-zyjtest.libvirt-qemu 9:blkio:/ 8:cpu,cpuacct:/ 7:memory:/ 6:freezer:/machine/qemu-1462-zyjtest.libvirt-qemu 5:pids:/system.slice/libvirtd.service 4:devices:/system.slice/libvirtd.service 3:cpuset:/machine/qemu-1462-zyjtest.libvirt-qemu/emulator 2:net_cls,net_prio:/machine/qemu-1462-zyjtest.libvirt-qemu 1:name=systemd:/system.slice/libvirtd.servi # virsh memtune zyj_test error: Unable to get memory parameters error: Requested operation is not valid: cgroup memory controller is not mounted I found a similar description at : https://bugzilla.redhat.com/show_bug.cgi?id=1140215 And I had checked this systemd version had merged the patches. core: introduce new Delegate=yes/no property controlling creation of cgroup subhierarchies core: don't migrate PIDs for units that may contain subcgroups, do this only for leaf units However, this issue is still exist. Zhu Yijun
