Comment 5 for bug 1841932

this happens because when

the extra spec was intoduced by https://blueprints.launchpad.net/nova/+spec/hide-hypervisor-id-flavor-extra-spec

it failed to namespace the extra spec properly.

it should have been added to the hw: namespace.

if it was then the AggregateInstanceExtraSpecsFilter would work with it.

the only way to fix this is to deprecate teh use of hide_hypervisor_id and replace the namespaced version hw:hide_hypervisor_id or alter the AggregateInstanceExtraSpecsFilter to specifcly ignore that value.

but we also need the metadata keys to confirm.

note we also discussed some alteration to this filter and extra specs in general as part of the flavor extraspec validation work such as requireing the use of "aggregate_instance_extra_specs:..." going froward and removing support for unscoped extra specs.