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On Jun 6, 2011, at 3:17 AM, FUJITA Tomonori wrote:

> On Mon, 6 Jun 2011 09:59:19 +0000
> Shehjar Tikoo <shehjart at gluster.com> wrote:
> 
>> It is not very clear to me whether Lunr will be a replacement for
>> Glance 
> 
> I don't think so.

Glance is the image store which uses s3/swift api's to store machine images.  Lunr is an effort to take the block volume code that is currently in nova and separate it into it's own more generic service.

> 
>> or will only be used for supporting application volumes.
> 
> I'm not sure the meaning of application volumes but it's a replacement
> of the current nova-volume, provinding volume service for VMs.

Yep, exactly.  I believe Shehjart was referring to EBS style block storage, which nova-volume currently provides (and Lunr will replace in the future most likely).

> 
> 
>> If I
>> understand this correct, it is trying to overcome the iscsi-only
>> access method currently provided for creating and accessing
>> application volumes. Correct?
> 
> nova-volume already supports non iSCSI protocols, AOE, Sheepdog, Ceph
> RBD. I think that you start working on GlusterFS integration with
> nova-volume right now. You can work with Lunr later (when it's
> released).


Agreed - it seems most reasonable to begin this work in nova-volume and then add support to Lunr when it is closer to being ready for prime time.

> 
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