'Return a list of flexvol names that match a set of extra specs.'

def get_matching_flexvols_for_extra_specs(self, extra_specs):

    extra_specs = self._modify_extra_specs_for_comparison(extra_specs)
    matching_flexvols = []
    for (flexvol_name, flexvol_info) in self.get_ssc().items():
        if self._flexvol_matches_extra_specs(flexvol_info, extra_specs):
            matching_flexvols.append(flexvol_name)
    return matching_flexvols
