Comment # 1 on bug 959845 from Olaf Hering

Next boot has:

[   12.324900] systemd-journald[156]: Received SIGTERM from PID 1 (systemd).
[   15.322089] systemd[1]: xen-dom0-modules.service: Found dependency on
xenstored_ro.socket/start
[   15.334085] systemd[1]: xen-dom0-modules.service: Found dependency on
proc-xen.mount/start
[   15.346163] systemd[1]: xen-dom0-modules.service: Found dependency on
xen-dom0-modules.service/start
[   15.358088] systemd[1]: xen-dom0-modules.service: Breaking ordering cycle by
deleting job sockets.target/start
[   15.370082] systemd[1]: sockets.target: Job sockets.target/start deleted to
break ordering cycle starting with xen-dom0-modules.service/start
[   15.372065] systemd[1]: Stopped Switch Root.
[   15.372982] systemd[1]: Cannot find unit for notify message of PID 156.