'Update all existing SnapMirror relationships on a given back end.'

def update_snapmirrors(self, config, src_backend_name, src_flexvol_names):

    backend_names = self.get_replication_backend_names(config)
    for dest_backend_name in backend_names:
        for src_flexvol_name in src_flexvol_names:
            dest_flexvol_name = src_flexvol_name
            try:
                self.update_snapmirror(src_backend_name, dest_backend_name, src_flexvol_name, dest_flexvol_name)
            except netapp_api.NaApiError:
                pass
