for i := 0; i < len(z.rebalMeta.PoolStats); i++ {
		if i == index {
			return index
		}
	}
	return -1
}

// initRebalanceMeta initializes rebalance metadata for a new rebalance
// operation and saves it in the object store.
func (z *erasureServerPools) initRebalanceMeta(ctx context.Context, buckets []string) (arn string, err error) {
	r := &rebalanceMeta{
		ID:        shortuuid.New(),