You should be hitting this short-circuit:
https://github.com/openstack/nova/blob/stable/queens/nova/db/sqlalchemy/api.py#L6106
Do you have a shadow_tags table?
You should be hitting this short-circuit:
https:/ /github. com/openstack/ nova/blob/ stable/ queens/ nova/db/ sqlalchemy/ api.py# L6106
Do you have a shadow_tags table?