[Users] Unable to run VM with "Unable to create cgroup" error message

[Alex Jia]

On 07/05/2012 11:34 AM, xuejie chen wrote:
> 2012/7/5 xuejie chen<xuejiechen52 at gmail.com>:
>> Hi,
>>
>>
>> 2012/7/4 Martin Kletzander<mkletzan at redhat.com>:
>>> On 07/04/2012 02:36 PM, Andrew Cathrow wrote:
>>>>
>>>> ----- Original Message -----
>>>>> From: "Martin Kletzander"<mkletzan at redhat.com>
>>>>> To: "xuejie chen"<xuejiechen52 at gmail.com>
>>>>> Cc: users at ovirt.org
>>>>> Sent: Wednesday, July 4, 2012 4:12:07 AM
>>>>> Subject: Re: [Users] Unable to run VM with "Unable to create cgroup" error message
>>>>>
>>>>> Hi,
>>>>>
>>>>> the only problem I could imagine is that there is really some
>>>>> directory
>>>>> missing, but you said it is there. Fromt his point I see two things
>>>>> you
>>>>> can try:
>>>>>   1) run libvirt with debugging output enabled [1]
>>>>>   2) try to create the directories manually
>>>> Is the cgroupfs mounted?
>>>>
>>> I checked and libvirt should complain if it is not mounted. But to be
>>> sure, is it?
>> I do not know how to check it.
>> where the cgroupfs should be mounted to?
>>
yum install libcgroup-tools on fedora then run libcgroup to check it.
> I have confirmed the cgroupfs did not mounted.
You should make sure cgroupfs is mounted firstly, I'm not sure whether 
it can be automatically
mounted by ovirt, and then you can successfully create a libvirt 
sub-group in cgroup.
> Thanks a lot.
> xuejie chen.
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