return
	}

	buckets := make([]string, 0, len(bucketInfos))
	for _, bInfo := range bucketInfos {
		buckets = append(buckets, bInfo.Name)
	}

	var id string
	if id, err = pools.initRebalanceMeta(ctx, buckets); err != nil {
		writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Rebalance routine is run on the first node of any pool participating in rebalance.

	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(),