Comment 5 for bug 1504196

Hi Aishwarya, I created a flavor that is associated with a host aggregate.

nova flavor-create bm-flavor auto 131072 836 48
nova flavor-key bm-flavor set cpu_arch=x86_64

nova aggregate-create bm-agg bm-zone
nova aggregate-add-host bm-agg ip6-devstack-41
nova aggregate-set-metadata bm-agg bm=true
nova flavor-key bm-flavor set aggregate_instance_extra_specs:bm=true

Hope it'll help you recreate the bug