[one-users] VM memory limit in OpenNebula or KVM?

[Daniel Molina]

On 7 March 2013 09:29, Gerry O'Brien <gerry at scss.tcd.ie> wrote:
> Hi Daniel,
>
>   We are running version 3.8.3 and mm_sched is running. Everything else is
> working as per normal.
>
>   We have managed to solve the problem by reducing the memory requirement to
> 14GB. My guess is that Sunstone is reporting more memory available than can
> actually be used so the instantation remained in the PENDING state as there
> were no host available with sufficient memory resources.

The scheduler defines a parameter to adjust the fraction of
memory reserved by the hypervisor(HYPERVISOR_MEM) [1], by default is
set to 10%.

[1] http://opennebula.org/documentation:rel3.8:schg#configuration

Cheers

>
>       Regards,
>         Gerry
>
>
> On 06/03/2013 09:43, Daniel Molina wrote:
>>
>> Hi,
>>
>> On 5 March 2013 14:29, Gerry O'Brien <gerry at scss.tcd.ie> wrote:
>>>
>>> Hi,
>>>
>>>      Is there a memory maximum set somewhere in OpenNebula or Kvm that
>>> limits
>>> the amount of memory a virtual machine created with the OCCI self-service
>>> can have? Our hosts have 16GB of memory. Sunstone reports 15.7G
>>> available.
>>> Yet, when I try and create a VM with 15360 memory using the self-service
>>> it
>>> remains in PENDING and never gets deployed. It is not a user quota issue.
>>> The oned.log says reports SUCCESS (see below).
>>
>> What opennebula version are you using?
>> Is the mm_sched process running?
>>
>> Cheers
>>
>>>      Regards,
>>>          Gerry
>>>
>>> Tue Mar  5 13:02:06 2013 [ReM][D]: Req:8304 UID:2 VirtualMachineInfo
>>> invoked, 4259
>>> Tue Mar  5 13:02:06 2013 [ReM][D]: Req:8304 UID:2 VirtualMachineInfo
>>> result
>>> SUCCESS, "<VM><ID>4259</ID><UI..."
>>> Tue Mar  5 13:02:06 2013 [ReM][D]: Req:2560 UID:2 VirtualMachineInfo
>>> invoked, 4259
>>> Tue Mar  5 13:02:06 2013 [ReM][D]: Req:2560 UID:2 VirtualMachineInfo
>>> result
>>> SUCCESS, "<VM><ID>4259</ID><UI..."
>>>
>>>
>>> --
>>> Gerry O'Brien
>>>
>>> Systems Manager
>>> School of Computer Science and Statistics
>>> Trinity College Dublin
>>> Dublin 2
>>> IRELAND
>>>
>>> 00 353 1 896 1341
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opennebula.org
>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
>
>
> --
> Gerry O'Brien
>
> Systems Manager
> School of Computer Science and Statistics
> Trinity College Dublin
> Dublin 2
> IRELAND
>
> 00 353 1 896 1341
>



-- 
Daniel Molina
Project Engineer
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | dmolina at opennebula.org | @OpenNebula