erasureSetOnlineDrivesCount  = "online_drives_count"
	erasureSetHealingDrivesCount = "healing_drives_count"
	erasureSetHealth             = "health"
)

const (
	poolIDL = "pool_id"
	setIDL  = "set_id"
)

var (
	erasureSetOverallWriteQuorumMD = NewGaugeMD(erasureSetOverallWriteQuorum,
		"Overall write quorum across pools and sets")
	erasureSetOverallHealthMD = NewGaugeMD(erasureSetOverallHealth,

// Temp files created in default Tmp dir
var globalTestTmpDir = os.TempDir()

// reseed - returns a new seed every time the function is called.
func reseed() uint32 {
	return uint32(time.Now().UnixNano() + int64(os.Getpid()))
}

// nextSuffix - provides a new unique suffix every time the function is called.
func nextSuffix() string {
	randmu.Lock()
	r := randN
	// Initial seed required, generate one.
	if r == 0 {

			}{
				Maintenance:   opts.Maintenance,
				SetID:         setIdx,
				PoolID:        poolIdx,
				Healthy:       erasureSetUpCount[poolIdx][setIdx].online >= poolWriteQuorums[poolIdx],
				HealthyRead:   erasureSetUpCount[poolIdx][setIdx].online >= poolReadQuorums[poolIdx],
				HealthyDrives: erasureSetUpCount[poolIdx][setIdx].online,
				HealingDrives: erasureSetUpCount[poolIdx][setIdx].healing,
				ReadQuorum:    poolReadQuorums[poolIdx],

			Value:       float64(health),
		})

		for _, h := range result.ESHealth {
			labels := map[string]string{
				"pool": strconv.Itoa(h.PoolID),
				"set":  strconv.Itoa(h.SetID),
			}
			metrics = append(metrics, MetricV2{
				Description:    getClusterErasureSetReadQuorumMD(),
				VariableLabels: labels,
				Value:          float64(h.ReadQuorum),
			})

	// Set file permission bits.
	mode = fs.FileMode(fi.h.Mode).Perm()

	// Set setuid, setgid and sticky bits.
	if fi.h.Mode&c_ISUID != 0 {
		mode |= fs.ModeSetuid
	}
	if fi.h.Mode&c_ISGID != 0 {
		mode |= fs.ModeSetgid
	}
	if fi.h.Mode&c_ISVTX != 0 {
		mode |= fs.ModeSticky
	}

	// Set file mode bits; clear perm, setuid, setgid, and sticky bits.
	switch m := fs.FileMode(fi.h.Mode) &^ 07777; m {
	case c_ISDIR:

			Typeflag: TypeFifo,
		},
		fm: 0600 | fs.ModeNamedPipe,
	}, {
		// setuid.
		h: &Header{
			Name:     "bin/su",
			Mode:     0755 | c_ISUID,
			Size:     23232,
			ModTime:  time.Unix(1355405093, 0),
			Typeflag: TypeReg,
		},
		fm: 0755 | fs.ModeSetuid,
	}, {
		// setguid.
		h: &Header{
			Name:     "group.txt",
			Mode:     0750 | c_ISGID,
			Size:     0,

	wg.Add(len(objSetMap))
	for setIdx, objsGroup := range objSetMap {
		go func(set *erasureObjects, group []delObj) {
			defer wg.Done()
			dobjects, errs := set.DeleteObjects(ctx, bucket, toNames(group), opts)
			mu.Lock()
			defer mu.Unlock()
			for i, obj := range group {
				delErrs[obj.origIndex] = errs[i]
				delObjects[obj.origIndex] = dobjects[i]
			}
		}(s.sets[setIdx], objsGroup)
	}
	wg.Wait()