Re: [openstack-dev] [placement][nova] Decision time on granular request groups for like resources

[Balázs Gibizer]

On Thu, Apr 19, 2018 at 12:45 AM, Eric Fried <openst...@fried.cc> wrote:
 I have a feeling we're just going to go back and forth on this, as 
we
 have for weeks now, and not reach any conclusion that is 
satisfactory to
 everyone. And we'll delay, yet again, getting functionality into 
this
 release that serves 90% of use cases because we are obsessing over 
the
 0.01% of use cases that may pop up later.

So I vote that, for the Rocky iteration of the granular spec, we add a
single `proximity={isolate|any}` qparam, required when any numbered
request groups are specified.  I believe this allows us to satisfy the
two NUMA use cases we care most about: "forced sharding" and "any 
fit".
And as you demonstrated, it leaves the way open for finer-grained and
more powerful semantics to be added in the future.

Can the proximity param specify relationship between the un-numbered 
and the numbered groups as well or only between numbered groups?
Besides that I'm +1 about proxyimity={isolate|any}

Cheers,
gibi


-efried

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