'Extend volume.'

def extend_volume(self, volume, new_size):

    LOG.info('extend_volume,    volume    id:    %s,    Enter    method.', volume['id'])
    used_pool_name = self.common.extend_volume(volume, new_size)
    LOG.info('extend_volume,    used    pool    name:    %s,    Exit    method.', used_pool_name)
