[occi-wg] Opinion Poll: IaaS or PaaS ?

[Krishna Sankar (ksankar)]

Need to understand a little bit more on this.

 

a)      Wouldn't it be better to add the missing attributes/elements to
OVF than inventing a new format

b)      The client has to understand something - either OVF or some
other representation. So why not add to OVF ?

c)       Finally, are there something fundamentally missing from/totally
incompatible with OVF that it cannot be fixed ?

Cheers

<k/>

 

From: occi-wg-bounces at ogf.org [mailto:occi-wg-bounces at ogf.org] On Behalf
Of Sam Johnston
Sent: Thursday, June 18, 2009 4:20 AM
To: Randy Bias
Cc: occi-wg at ogf.org
Subject: Re: [occi-wg] Opinion Poll: IaaS or PaaS ?

 

On Thu, Jun 18, 2009 at 8:32 AM, Randy Bias <randyb at neotactics.com>
wrote:

	Sure, but that's not the issue.  The issue is VM portability.
It's important, but difficult.  That's my point.  Specifying the
hypervisor of an image just means the cloud has enough foreknowledge to
reject the upload.


Exactly. In fact my main concern is that as OVF is only ever used as a
transport rather than run-time format there are two potentially lossy
transformations (one to bundle up e.g. a VMware virtual machine to OVF
and another to unbundle it to say Hyper-V). Any settings that fall
outside of the OVF net (potentially including critical details such as
interface parameters) will be ignored at best and lost at worst.

If a client wants to make a VM it should not need to understand OVF so
we will have our own, simple descriptor language that I imagine will end
up looking like the stuff in VMX files (example attached). If we are
careful about how we do this we may well be able to solve the VM
portability problem as well - something I'm sure many of the open source
projects would be happy to see.

Sam
 

	On Jun 14, 2009, at 8:38 PM, Sam Johnston wrote:

	
	
	

	On Mon, Jun 15, 2009 at 5:05 AM, Randy Bias
<randyb at neotactics.com> wrote:

		   If you don't have this capability then allowing the
upload of completely opaque images and hoping they will have any kind of
reasonable performance on an arbitrary cloud providers system is a pipe
dream.  This is an area badly in need of standardization, but I doubt it
will come any time soon.

	
	Fortunately specifying the type of hypervisor an image is tied
to/optimised for isn't hard...
	
	Sam

	 

	
	Randy Bias, Cloud Strategist
	+1 (415) 939-8507 [m], randyb at neotactics.com

	BLOG: http://cloudscaling.com

	 

 

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