[Openstack-operators] [nova][ironic][scheduler][placement] IMPORTANT: NOT Getting rid of the automated reschedule functionality

Blair Bethwaite blair.bethwaite at gmail.com
Tue May 23 23:06:05 UTC 2017


Thanks Jay,

I wonder whether there is an easy-ish way to collect stats about the
sorts of errors deployers see in that catchall, so that when this
comes back around in a release or two there might be some less
anecdotal data available...?

Cheers,

On 24 May 2017 at 06:43, Jay Pipes <jaypipes at gmail.com> wrote:
> Hello Dear Operators,
>
> OK, we've heard you loud and (mostly) clear. We won't remove the automated
> rescheduling behavior from Nova. While we will be removing the primary cause
> of reschedules (resource overconsumption races), we cannot yet eliminate the
> catchall exception handling on the compute node that triggers a retry of the
> instance launch. Nor will we be able to fully ameliorate the
> affinity/anti-affinity last-minute violation problems for at least another
> release.
>
> So, we'll continue to support basic retries within the originally-selected
> cell.
>
> Best,
> -jay
>
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-- 
Cheers,
~Blairo



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