Comment 1 for bug 1816034

Are you setting [workarounds]/report_ironic_standard_resource_class_inventory=False? I assume so since you said you migrated your flavors and nodes so that scheduling for those baremetal nodes should only use the custom resource class from the ironic node (and flavor).

If so, then the IronicDriver.requires_allocation_refresh variable should probably be changed to:

IronicDriver.requires_allocation_refresh = not CONF.workarounds.report_ironic_standard_resource_class_inventory