[1] There has been a recurring theme of needing "some kind of config" - not necessarily nova.conf or any oslo.config - that can describe: - Resource provider name/uuid/parentage, be it an existing provider or a new nested provider; - Inventory (e.g. last-level cache in this case); - Physical resource(s) to which the inventory corresponds (e.g. "cache ways" in this case); - Traits, aggregates, other? As of this writing, no specifics have been decided, even to the point of positing that it could be the same file for some/all of the specs for which the issue arose.

A proposal extremely close to this has been in the works in various forms for about a year now, the latest iteration of which can be found at [2]. Up to this point, there has been a general lack of enthusiasm for it, probably because we just didn't have any really strong use cases yet. I think we do now, given that RMD and others (including [3]) have expressed a need for it in Train. As such, Dakshina and team have agreed to take over that spec and move forward with it. To be clear, this will drive toward a general-purpose resource provider customization/description mechanism, not be RMD-specific. efried [2] https://review.opendev.org/#/c/612497/ [3] http://lists.openstack.org/pipermail/openstack-discuss/2019-May/005802.html