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Hi all,<br>
Thanks for all the feedback. Please see below.<br>
<br>
2018-05-17 1:24 GMT+08:00 Jay Pipes <span dir="ltr"><<a
href="mailto:jaypipes@gmail.com" target="_blank">jaypipes@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">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:<br>
<br>
<a
href="https://developer.openstack.org/api-ref/placement/#list-usages"
rel="noreferrer" target="_blank">https://developer.openstack.or<wbr>g/api-ref/placement/#list-usag<wbr>es</a><br>
<br>
I see no reason not to use it.<br>
</blockquote>
<div dir="ltr"> 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.<br>
<br>
As Matt mentioned, Nova does not handle accelerators and
presumably would not handle quotas for them either. <br>
<br>
On 5/16/2018 11:34 PM, Alex Xu wrote:<br>
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<div class="gmail_quote"><span class="gmail-">2018-05-17
1:24 GMT+08:00 Jay Pipes <span dir="ltr"><<a
href="mailto:jaypipes@gmail.com" target="_blank"
moz-do-not-send="true">jaypipes@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0px
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<br>
There is already actually a spec to use placement
for quota usage checks in Nova here:<br>
<br>
<a href="https://review.openstack.org/#/c/509042/"
rel="noreferrer" target="_blank"
moz-do-not-send="true">https://review.openstack.org/#<wbr>/c/509042/</a></blockquote>
<div><br>
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</span>
<div>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.</div>
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<div><br>
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<div>here is the line <a
href="https://review.openstack.org/#/c/569011/"
moz-do-not-send="true">https://review.openstack.org/#/c/569011/</a></div>
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Alex, is this expected to be implemented by Rocky?<br>
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<br>
Probably best to have a look at that and see if
it will end up meeting your needs.<br>
<br>
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* Cyborg provides a filter for the Nova
scheduler, which checks<span><br>
whether the project making the request
has exceeded its own quota.<br>
</span></blockquote>
<br>
Quota checks happen before Nova's scheduler gets
involved, so having a scheduler filter handle
quota usage checking is pretty much a
non-starter.<br>
</blockquote>
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</blockquote>
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?<br>
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I'll have a look at the patches you've proposed
and comment there.<br>
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Thanks!<br>
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Best,<br>
-jay</blockquote>
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<br>
Regards,<br>
Sundar<br>
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