Package: libvirt-daemon-system Version: 3.0.0-4+deb9u3 Hello,
If one is to execute the following commands: 1. systemctl daemon-reload 2. service libvirtd restart (which are likely to happen as part of regular system updates) Subsequent virsh CPU statistics calls will fail with the following error messages: # virsh cpu-stats <domain> error: Failed to retrieve CPU statistics for domain '<domain>' error: Requested operation is not valid: cgroup CPUACCT controller is not mounted # virsh domstats --cpu-total <domain> Domain: '<domain>' [empty ouput] Netsearching around, I stumbled on: a. https://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/ b. https://github.com/moby/moby/pull/20633 (similar Docker-related issue) I can confirm the following workaround DOES solve the issue: cat << EOF > /etc/systemd/system/libvirtd.service.d/cgroup-delegation.conf [Service] Delegate=yes EOF Would you consider adding this setting to the stock (Debian) libvirtd unit file ? Thank you very much and best, Cédric Other ref: https://answers.launchpad.net/ubuntu/+question/665132 -- Cédric Dufour @ Idiap Research Institute
