// expand and then we continue to rebalance.
func (z *erasureServerPools) updateRebalanceStats(ctx context.Context) error {
	var ok bool
	for i := range z.serverPools {
		if z.findIndex(i) == -1 {
			// Also ensure to initialize rebalanceStats to indicate
			// its a new pool that can receive rebalanced data.
			z.rebalMeta.PoolStats = append(z.rebalMeta.PoolStats, &rebalanceStats{})
			ok = true
		}

}

func (f *exitCodeFilter) Write(data []byte) (int, error) {
	n := len(data)
	f.buf.Write(data)
	// Flush to w until a potential match of exitRe
	b := f.buf.Bytes()
	match := f.exitRe.FindIndex(b)
	if match == nil {
		// Flush all of the buffer.
		_, err := f.w.Write(b)
		f.buf.Reset()
		if err != nil {
			return n, err
		}
	} else {
		// Flush up to the beginning of the (potential) match.