Hi all,
Thanks for all the feedback. Please see below.
2018-05-17 1:24 GMT+08:00 Jay Pipes <jaypi...@gmail.com
<mailto:jaypi...@gmail.com>>:
Placement already stores usage information for all allocations of
resources. There is already even a /usages API endpoint that you can
specify a project and/or user:
https://developer.openstack.org/api-ref/placement/#list-usages
<https://developer.openstack.org/api-ref/placement/#list-usages>
I see no reason not to use it.
This does not seem to be per-project (per-tenant). Given a tenant ID
and a resource class, we want to get usages of that RC by that tenant.
Please LMK if I misunderstood something.
As Matt mentioned, Nova does not handle accelerators and presumably
would not handle quotas for them either.
On 5/16/2018 11:34 PM, Alex Xu wrote:
2018-05-17 1:24 GMT+08:00 Jay Pipes <jaypi...@gmail.com
<mailto:jaypi...@gmail.com>>:
[....]
There is already actually a spec to use placement for quota
usage checks in Nova here:
https://review.openstack.org/#/c/509042/
<https://review.openstack.org/#/c/509042/>
FYI, I'm working on a spec which append to that spec. It's about
counting quota for the resource class(GPU, custom RC, etc) other
than nova built-in resources(cores, ram). It should be able to count
the resource classes which are used by cyborg. But yes, we probably
should answer Matt's question first, whether we should let Nova
count quota instead of Cyborg.
here is the line https://review.openstack.org/#/c/569011/
Alex, is this expected to be implemented by Rocky?
Probably best to have a look at that and see if it will end up
meeting your needs.
* Cyborg provides a filter for the Nova scheduler, which
checks
whether the project making the request has exceeded
its own quota.
Quota checks happen before Nova's scheduler gets involved, so
having a scheduler filter handle quota usage checking is
pretty much a non-starter.
This applies only to the resources that Nova handles, IIUC, which does
not handle accelerators. The generic method that Alex talks about is
obviously preferable but, if that is not available in Rocky, is the
filter an option?
I'll have a look at the patches you've proposed and comment there.
Thanks!
Best,
-jay
Regards,
Sundar
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