'Get volume stats.'

def get_volume_stats(self, refresh=False):

    LOG.debug('get_volume_stats,    refresh:    %s,    Enter    method.', refresh)
    pool_name = None
    if (refresh is True):
        (data, pool_name) = self.common.update_volume_stats()
        backend_name = self.configuration.safe_get('volume_backend_name')
        data['volume_backend_name'] = (backend_name or 'FJDXISCSIDriver')
        data['storage_protocol'] = 'iSCSI'
        self._stats = data
    LOG.debug('get_volume_stats,    pool    name:    %s,    Exit    method.', pool_name)
    return self._stats
