[nova][ptg] Resurrecting NUMA topology in Placement

Sylvain Bauza sbauza at redhat.com
Tue Nov 12 10:29:20 UTC 2019

We discussed about a long known story

The whole agreement during the PTG was to keep things simple with baby
steps :
- only supporting a few NUMA queries and defer others as unsupported (still
supported by legacy NUMATopologyFilter)
- The to-be-resurrected spec would be only focus on VCPU/PCPU/MEMORY_MB
resource classes and not handle PCI or GPU devices (ie. level-1 tree, no
children under the NUMA RPs)

Agreement was also there for saying that functional tests should be enough
since PlacementFixture already works perfectly.

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