Open Stack

On 19 August 2015 at 19:30, Alberto Geniola <albertogeniola at gmail.com> wrote:
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> Hi everyone,
>
>
> This is my first email to the OS developer forum, so forgive me if I misplaced the subject tags J.

Welcome!

For future posts, I hope this helps make it easier:
https://wiki.openstack.org/wiki/MailingListEtiquette


> Straight to the point: for a project we’re involved in, we think that a pre-fetcher mechanism would be great for a variety of use cases. There was an attempt with this blueprint:
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> https://blueprints.launchpad.net/nova/+spec/nova-image-cache-management-2
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> and a more recent one:
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> https://blueprints.launchpad.net/python-novaclient/+spec/prefetch-image
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> although both seems to be dead now.
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> So I really want to get a feedback from the developer’s community whether (1) such a feature makes sense in general, and (2) it may be worth the integration of such a component in the OpenStack code. In fact, although we can solve our problem by developing an in-house component, it would be better to have it integrated in OpenStack, including Nova and Horizon, so I need the feedback from the OS Guru guys J.
>
>
> What do you think?

I think it does make some sense.

The disagreement in the past is about agreeing what should live inside
Nova, and what should live outside Nova.

For me, I am OK having an API to trigger an image prefetch on a
particular host (although in many cases doing a build on that host has
the same affect).

I think the rest of that mechanism should probably live outside of
Nova and Glance. So the question is what extra API are required to
create such a tool.

Thanks,
johnthetubaguy