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

[Daniel Molina]

On 7 March 2013 13:53, Gerry O'Brien <gerry at scss.tcd.ie> wrote:
> On 07/03/2013 09:20, Daniel Molina wrote:
>>
>> 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
>
> Does that 10% come out of the available host memory reported by Sunstone?

Yes, it does

>
>
>
>>
>>>        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
>>>
>>
>>
>
>
> --
> 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