[occi-wg] Is OCCI the HTTP of Cloud Computing?

[Randy Bias]

First off, we've got to be careful about saying 'copy the image'.  You
probably mean 'copy the instance'.  Where an image is an on-disk
representation of an unpowered VM and an instance is a running version of
that same on-disk representation or a running copy.

So for 'cloning' do you mean:

    - An image in a library is turned into an instance?
    - A running instance is copied?
    - If a running instance is copied do you have a new image or a new
instance?
    - If you have a new instance, is it powered on automatically?
    - Does a new cloned instance have the exact same hardware profile
      as the original cloned instance?  RAM, CPU, disk?
    - Does a cloned instance also duplicate the RAM?

In other words, am I making a PURE 100% duplicated running instance (there
are use cases for this), a new reference image, or am I 'scaling' an
instance (either horizontally with more copies or vertically with a bigger
copy)?

I've seen clone used by customers, clouds, and various IT departments and
I've almost never seen the same definition.  It's about as bad as 'cloud'
when it comes to being defined.

When our customers ask for cloning they also usually mean very different
things.

I'd rather have a few different verbs here that specified different behavior
and that's potentially a rat's nest because not every cloud supports all of
these behaviors.


--Randy


On 5/7/09 12:44 AM, "Tino Vazquez" <tinova at fdi.ucm.es> wrote:

> Hi Randy,
> 
> By "clone" I mean "copy the image" if set to yes or "use the original"
> if set to no. What other meaning do you have in mind?
> 
> Also, for me "stop" means stop the VM and dump the state onto a file.
> "suspend" would be stop it but keep the state in memory.
> 
> BTW, there is something in state machine diagram [1]  that I still
> don't understand. The entry point (after start) I take it as the
> "defined" or "pending" state. If that is correct, then we have our VMs
> going always from the initial state to "suspended". Is that what we
> want?
> 
> Regards,
> 
> -Tino
> 
> [1] 
> 
http://forge.gridforum.org/sf/wiki/do/viewPage/projects.occi-wg/wiki/StateMode>
l
> 
> --
> Constantino Vázquez, Grid Technology Engineer/Researcher:
> http://www.dsa-research.org/tinova
> DSA Research Group: http://dsa-research.org
> Globus GridWay Metascheduler: http://www.GridWay.org
> OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org
> 
> 
> 
> On Thu, May 7, 2009 at 1:29 AM, Randy Bias <randyb at gogrid.com> wrote:
>> dange


-- 
Randy Bias, VP Technology Strategy, GoGrid
randyb at gogrid.com, (415) 939-8507 [mobile]
BLOG: http://neotactics.com/blog, TWITTER: twitter.com/randybias