[openstack-dev] [nova] readout from Philly Operators Meetup

Joe Gordon joe.gordon0 at gmail.com
Thu Mar 12 00:31:25 UTC 2015


On Wed, Mar 11, 2015 at 4:07 PM, Ihar Hrachyshka <ihrachys at redhat.com>
wrote:

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> On 03/11/2015 07:48 PM, Joe Gordon wrote:
> > Out of sync Quotas ------------------
> >
> > https://etherpad.openstack.org/p/PHL-ops-nova-feedback L63
> >
> > The quotas code is quite racey (this is kind of a known if you look
> > at the bug tracker). It was actually marked as a top soft spot
> > during last fall's bug triage -
> >
> http://lists.openstack.org/pipermail/openstack-dev/2014-September/046517.html
> >
> >  There is an operator proposed spec for an approach here -
> > https://review.openstack.org/#/c/161782/
> >
> > Action: we should make a solution here a top priority for enhanced
> > testing and fixing in Liberty. Addressing this would remove a lot
> > of pain from ops.
> >
> >
> > To help us better track quota bugs I created a quotas tag:
> >
> > https://bugs.launchpad.net/nova/+bugs?field.tag=quotas
> >
> > Next step is re-triage those bugs: mark fixed bugs as fixed,
> > deduplicate bugs etc.
>
> (Being quite far from nova code, so ignore if not applicable)
>
> I would like to note that other services experience races in quota
> management too. Neutron has a spec approved to land in Kilo-3 that is
> designed to introduce a new quota enforcement mechanism that is
> expected to avoid (some of those) races:
>
>
> https://github.com/openstack/neutron-specs/blob/master/specs/kilo/better-quotas.rst
>
> I thought you may be interested in looking into it to apply similar
> ideas to nova.
>

Working on a library for this hasn't been ruled out yet. But right now I am
simply trying to figure out how to reproduce the issue, and nothing else.


>
> /Ihar
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