[one-users] Java API questions

[rbabu at hexagrid.com]

Tino
Thanks for your email.


On Jun 17, 2009, at 11:54 AM, Tino Vazquez <tinova at fdi.ucm.es> wrote:

> Hi Rangababu,
>
> comments inline,
>
> On Wed, Jun 17, 2009 at 5:26 AM, Rangababu <rbabu at hexagrid.com> wrote:
> Hi
>
> First of all thanks for providing the Java API.  I have couple of  
> questions about it.
>
> (a) What is the difference between VmState & LcmState?
>
> The VmState are a step up the ladder than the LcmSates. In fact, the  
> LcmStates are all contained in the ACTIVE VMState, i.e., the  
> LcmStates are the unfolding of this ACTIVE state. When the VM is in  
> any other VMSate than this ACTIVE one, the LcmState is always at  
> LCM_INIT.
>
> Take a look at include/VirtualMachine.h for a complete list of the  
> states.
>
>
> (b) The junit test OpenNebulaClientTest has a lifecycle test method  
> where in, after calling vmallocate, vmdeploy is called. Do we always  
> have to call vmDeploy? If we add couple of hosts to openNebula host  
> list and call vmallocate, wont OpenNebula figure out which host to  
> use? Is it required to call vmDeploy with a host Id? or is it only  
> available for users who want to specify which host their vm should  
> reside on?
>
> The deploy call is intended to be used by the scheduler. You can  
> just allocate the VM and the scheduler will be in charge of finding  
> a suitable host, and place the deploy call to the core using the  
> appropriate host_id.
>
> hope it helps, please do not hesitate to ask further doubts.
>
> Regards,
>
> -Tino
>
>
>
>
> Rangababu
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>
>
>
>
> --
> Constantino Vázquez, Grid Technology Engineer/Researcher: http://www.dsa-research.org/tinov 
> a
> DSA Research Group: http://dsa-research.org
> Globus GridWay Metascheduler: http://www.GridWay.org
> OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org
>
>
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