networksegments table in neutron can not be cleared automatically

[yeshen]

_process_port_binding function in neutron/plugins/ml2/plugin.py used clear_binding_levels to clear ml2_port_binding_levels table, but it will not do anything to networksegments under hierarchical port bonding condition

@db_api.context_manager.writer
def clear_binding_levels(context, port_id, host):
    if host:
        for l in (context.session.query(models.PortBindingLevel).
                  filter_by(port_id=port_id, host=host)):
            context.session.delete(l)
        LOG.debug("For port %(port_id)s, host %(host)s, "
                  "cleared binding levels",
                  {'port_id': port_id,
                   'host': host})

[James Denton (james-denton)]

Marking invalid for OSA. If this is still an issue, please submit for Neutron project.