[openstack-dev] [glance][nova] how to upgrade from v1 to v2?

Monty Taylor mordred at inaugust.com
Sat Sep 26 00:16:51 UTC 2015


On 09/25/2015 06:37 PM, Chris Hoge wrote:
>
>> On Sep 25, 2015, at 10:12 AM, Andrew Laski <andrew at lascii.com
>> <mailto:andrew at lascii.com>> wrote:
>>
>> I understand that reasoning, but still am unsure on a few things.
>>
>> The direction seems to be moving towards having a requirement that the
>> same functionality is offered in two places, Nova API and Glance V2
>> API. That seems like it would fragment adoption rather than unify it.
>
> My hope would be that proxies would be deprecated as new capabilities
> moved in. Some of this will be driven by application developers too,
> though. We’re looking at an interoperability standard, which has a
> natural tension between backwards compatibility and new features.

Yeah. The proxies are also less efficient, because they have to bounce 
through two places.

>>
>> Also after digging in on image-create I feel that there may be a
>> mixup.  The image-create in Glance and image-create in Nova are two
>> different things. In Glance you create an image and send the disk
>> image data in the request, in Nova an image-create takes a snapshot of
>> the instance provided in the request.  But it seems like DefCore is
>> treating them as equivalent unless I'm misunderstanding.
>>
>
>
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