[occi-wg] Nouns and Verbs (was: Syntax of OCCI API) - state model

Tino Vazquez tinova at fdi.ucm.es
Fri Apr 17 08:23:36 CDT 2009

IMHO I think "migrating"  and/or "migrated" are states that doesn't
make sense under the point of view of a Cloud API, this should be
something internal completely transparent to the user. Also, I am not
sure that we need the "copied" state. What does it mean exactly?

Aside from that I kind of like the model. I would suggest adding a
"suspending" state (or "saving" since it presumabley the VM is going
to dump a snapshot) and also a "finished" state and "failed" state to
handle errors.

What do you think?

On Fri, Apr 17, 2009 at 3:14 PM, Lars Larsson <larsson at cs.umu.se> wrote:
> On Fri, 17 Apr 2009, Ignacio Martin Llorente wrote:
>> We do not need "migrated", that is an internal operation that can not
>> be requested using a Cloud API
> I fully agree with Ignacio.
> I think there is a difference between the set of states that a
> VM can be in, and the set of states that may be set using the
> API. The first set may be larger and include informational
> states such as "being migrated" or "being copied", but that does
> not mean that the user can actively request that a VM should be
> migrated.
> I suggest that we use the states shown at page 25 in "CIM System
> Virtualization White Paper" by the DMTF (DSP2013), available
> here:
>        http://www.dmtf.org/standards/published_documents/DSP2013_1.0.0.pdf
> Displaying extra information, such as "being migrated" or "being
> copied" is up to the infrastructure provider to optionally add
> to the description of the state that is reported via monitoring.
> Best regards,
> -- Lars
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Constantino Vázquez, Grid Technology Engineer/Researcher:
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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