[ovirt-users] Host not restarting through manager

Hi, I have two UCS server,both are configured for power management, but when i put host to maintenance and restart it by selecting power management>restart on the OVirt Manager it shows as rebooting but the host is not really rebooting,i had the same issue with HP servers ILO2. What should i do to make it work Also under Host>power management>test is failing with "Test Failed, Failed: You have to enter plug number Please use '-h' for usage" Thanks for any help