[openstack-dev] [nova] How to debug no valid host failures with placement

Joshua Harlow harlowja at fastmail.com
Thu Aug 2 16:43:40 UTC 2018


Storage space is a concern; really?

If it really is, then keep X of them for some definition of X (days, 
number, hours, other)? Offload the snapshot asynchronously if 
snapshotting during requests is a problem.

We have the power! :)

Chris Friesen wrote:
> On 08/01/2018 11:34 PM, Joshua Harlow wrote:
>
>> And I would be able to say request the explanation for a given request id
>> (historical even) so that analysis could be done post-change and
>> pre-change (say
>> I update the algorithm for selection) so that the effects of
>> alternations to
>> said decisions could be determined.
>
> This would require storing a snapshot of all resources prior to
> processing every request...seems like that could add overhead and
> increase storage consumption.
>
> Chris
>
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