[openstack-dev] [nova] Distributed Database

Matthieu Simonin matthieu.simonin at inria.fr
Sun Apr 24 03:45:33 UTC 2016

----- Mail original -----
> De: "Edward Leafe" <ed at leafe.com>
> À: "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org>
> Envoyé: Samedi 23 Avril 2016 19:12:03
> Objet: Re: [openstack-dev] [nova] Distributed Database
> On Apr 23, 2016, at 10:10 AM, Thierry Carrez <thierry at openstack.org> wrote:
> >> I think replacing nova's persistent storage layer with a distributed
> >> database would have a great effect - but I do not think it would have
> >> anything to do with the database itself. It would come from the act that
> >> would be completely necessary to accomplish that- completely rewriting
> >> the persistence layer.
> > 
> > So... The folks from the Discovery initiative working on a
> > massively-distributed cloud use case have been working on incremental
> > changes to make that use case better supported by stock OpenStack. That
> > includes an oslo.db driver backed by a distributed database. Being
> > scientists, they ran interesting experiments to see when and where it made
> > sense.
> > 
> > They will present their findings in the upstream dev track, and I think it
> > makes a good data point for this discussion:
> > 
> > https://www.openstack.org/summit/austin-2016/summit-schedule/events/7342
> That’s exactly the scenario I had in mind. When I first was tasked with
> creating cells in the early days of OpenStack, Rackspace wanted a global
> deployment of individual cells that could be addressed individually or as a
> single deployment. It wasn’t the load on the database that was ever the
> issue; it was the inability to keep the data synchronized across the globe.
> I pushed for something better than MySQL at this, but was not successful in
> convincing many others. I’m really looking forward to hearing the results of
> these tests.

We just landed in Austin (a bit tired). 
But motivated in the perspective to have some of you in the working group session to discuss ! 

See you,


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