'Covert returned JSON volumes into StorageVolume instances
:keyword    objs: ``list`` of JSON dictionaries representing the
StorageVolumes
:type       objs: ``list``
:return: ``list`` of :class:`StorageVolume`s'

def _to_volumes(self, objs):

    volumes = {}
    for o in objs:
        vid = o['DISKID']
        volumes[vid] = vol = StorageVolume(id=vid, name=o['LABEL'], size=int(o['SIZE']), driver=self.connection.driver)
        vol.extra = copy(o)
    return list(volumes.values())
