'Get volume stats.'

def get_volume_stats(self, refresh=False):

    if refresh:
        self._vol_stats = self._update_volume_stats()
    LOG.debug('ISE    get_volume_stats    (total,    free):    %(total)s,    %(free)s', {'total': self._vol_stats['total_capacity_gb'], 'free': self._vol_stats['free_capacity_gb']})
    return self._vol_stats
