'Retrieves stats info.'

def update_volume_stats(self):

    stats = super(ISCSIAdapter, self).update_volume_stats()
    self.allowed_ports = self.validate_ports(self.client.get_iscsi_targets(), self.config.io_port_list)
    backend_name = self.config.safe_get('volume_backend_name')
    stats['volume_backend_name'] = (backend_name or 'VNXISCSIDriver')
    return stats
