Duration:  duration,
		Path:      path,
		Error:     errStr,
		Bytes:     sz,
	}
}

func (p *rebalanceMetrics) log(r rebalanceMetric, poolIdx int, paths ...string) func(sz int64, err error) {
	startTime := time.Now()
	return func(sz int64, err error) {
		duration := time.Since(startTime)
		if globalTrace.NumSubscribers(madmin.TraceRebalance) > 0 {

	tags["set"] = strconv.Itoa(er.setIndex)
	tags["pool"] = strconv.Itoa(er.poolIndex)
	tags["merrs"] = joinErrs(errs)
	tags["derrs"] = fmt.Sprintf("%v", dataErrsByPart)
	if m.IsValid() {
		tags["sz"] = strconv.FormatInt(m.Size, 10)
		tags["mt"] = m.ModTime.Format(iso8601Format)
		tags["d:p"] = fmt.Sprintf("%d:%d", m.Erasure.DataBlocks, m.Erasure.ParityBlocks)
	} else {
		tags["invalid"] = "1"