[Libcg-devel] [libvirt]: Not able to login to container when cgroup is enabled

Rishikesh risrajak at linux.vnet.ibm.com
Wed Oct 7 15:09:09 UTC 2009


Dhaval Giani wrote:
> On Wed, Oct 07, 2009 at 06:57:48AM -0700, Dan Smith wrote:
>   
>> R> can you help me here ?
>>
>> Probably not, I'm not familiar with cgconfig nor the latest cgroup
>> support in libvirt.
>>
>> R> 14:47:24.556: warning : qemudStartup:565 : Unable to create cgroup
>> R> for driver: No such device or address
>>
>> My guess is that this means you don't have the cgroup filesystem
>> mounted, or it's mounted in a way that prevents libvirt from doing its
>> work.  IIRC, there are things you can do to the system that require a
>> reboot to undo.  If cgconfig is setting up the cgroups in such a way,
>> you might need to reboot between stopping cgconfig and trying libvirt
>> by itself.
>>
>>     
>
> Or the cgroups are being setup in funny fashion. Rishi, what does your
> config file look like?
>   

I am attaching the config file.
>   
>> R> But when i start cgconfig service, then i am not able to open
>> R> console for my container.
>>
>> Again, knowing nothing of cgconfig, I can only speculate that it's
>> doing something to prevent accessing the console pty.
>>
>>     
>
> cgconfig does nothing apart from setup the cgroup filesystem as
> mentioned in the configuration files.
>
>   
>> I would push on the libcgroup folks to help figure out what it's doing
>> (either by default or with your config) to prevent that and then go
>> from there.
>>
>>     
>
> Would appreciate any help from the libvirt folks who have worked on the
> cgroup support in libvirt.
>
> thanks,
>   

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: cgconfig.conf
URL: <http://listman.redhat.com/archives/libvir-list/attachments/20091007/752c4727/attachment-0001.conf>


More information about the libvir-list mailing list