[ovirt-users] power management test fails while ipmi command successes

Hi all, I've just installed two new dell r630 hosts and every thing is alright with vdsm registration, but power management test always fails with ipmi or drac7 item. When I start the manual ipmi command like this "ipmitool -I lanplus -H 10.34.20.45 -U root chassis power status", it always success with "power chassis is on". All of my other dell servers (r710, r620) success on power management test. Is it a known bug?