return
			}
			actualSha256 := actualH.Sum(nil)

			z := obj.(*erasureServerPools)
			er := z.serverPools[0].getHashedSet(object)

			disks := er.getDisks()
			distribution := hashOrder(pathJoin(bucket, object), nDisks)
			shuffledDisks := shuffleDisks(disks, distribution)

			// remove last data shard
			err = removeAll(pathJoin(shuffledDisks[11].String(), bucket, object))
			if err != nil {

	if shuffledDisks[0] != disks[8] ||
		shuffledDisks[1] != disks[7] ||
		shuffledDisks[2] != disks[9] ||
		shuffledDisks[3] != disks[6] ||
		shuffledDisks[4] != disks[10] ||
		shuffledDisks[5] != disks[5] ||
		shuffledDisks[6] != disks[11] ||
		shuffledDisks[7] != disks[4] ||
		shuffledDisks[8] != disks[12] ||
		shuffledDisks[9] != disks[3] ||
		shuffledDisks[10] != disks[13] ||
		shuffledDisks[11] != disks[2] ||

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"testing"
)

func prepareErasurePools() (ObjectLayer, []string, error) {
	nDisks := 32
	fsDirs, err := getRandomDisks(nDisks)
	if err != nil {
		return nil, nil, err
	}

	pools := mustGetPoolEndpoints(0, fsDirs[:16]...)
	pools = append(pools, mustGetPoolEndpoints(1, fsDirs[16:]...)...)

	return m
}

func collectLocalDisksMetrics(disks map[string]struct{}) map[string]madmin.DiskMetric {
	objLayer := newObjectLayerFn()
	if objLayer == nil {
		return nil
	}

	metrics := make(map[string]madmin.DiskMetric)
	storageInfo := objLayer.LocalStorageInfo(GlobalContext, true)
	for _, d := range storageInfo.Disks {
		if len(disks) != 0 {
			_, ok := disks[d.Endpoint]
			if !ok {
				continue
			}

}

func BenchmarkInitStorageDisksMax(b *testing.B) {
	benchmarkInitStorageDisksN(b, 32*204)
}

func benchmarkInitStorageDisksN(b *testing.B, nDisks int) {
	b.ResetTimer()
	b.ReportAllocs()

	fsDirs, err := getRandomDisks(nDisks)
	if err != nil {
		b.Fatal(err)
	}

	endpoints := mustGetNewEndpoints(0, 16, fsDirs...)
	b.RunParallel(func(pb *testing.PB) {
		endpoints := endpoints

func initTestServerWithBackend(ctx context.Context, t TestErrHandler, testServer TestServer, objLayer ObjectLayer, disks []string) TestServer {
	// Test Server needs to start before formatting of disks.
	// Get credential.
	credentials := globalActiveCred
	if !globalReplicationPool.IsSet() {
		globalReplicationPool.Set(nil)
	}
	testServer.Obj = objLayer
	testServer.rawDiskPaths = disks

	// upto GOMAXPROCS if GOMAXPROCS is < len(disks)
	maxProcs := runtime.GOMAXPROCS(0)
	if maxProcs < len(disks) {
		disks = disks[:maxProcs]
	}

	// Start one scanner per disk
	var wg sync.WaitGroup
	wg.Add(len(disks))

	for i := range disks {
		go func(i int) {
			defer wg.Done()
			disk := disks[i]

			for bucket := range bucketCh {
				select {

	// Based on the random shuffling return back randomized disks.
	r := rand.New(rand.NewSource(time.Now().UnixNano()))

	for _, i := range r.Perm(len(disks)) {
		if disks[i] != nil && disks[i].IsLocal() {
			newDisks = append(newDisks, disks[i])
		}
	}

	return newDisks
}

func (er erasureObjects) getLocalDisks() (newDisks []StorageAPI) {
	disks := er.getDisks()

func readAllFileInfo(ctx context.Context, disks []StorageAPI, origbucket string, bucket, object, versionID string, readData, healing bool) ([]FileInfo, []error) {
	metadataArray := make([]FileInfo, len(disks))

	opts := ReadOptions{
		ReadData: readData,
		Healing:  healing,
	}

	g := errgroup.WithNErrs(len(disks))
	// Read `xl.meta` in parallel across disks.
	for index := range disks {
		g.Go(func() (err error) {

// listOnlineDisks - returns
// - a slice of disks where disk having 'older' xl.meta (or nothing)
// are set to nil.
// - latest (in time) of the maximally occurring modTime(s), which has at least quorum occurrences.
func listOnlineDisks(disks []StorageAPI, partsMetadata []FileInfo, errs []error, quorum int) (onlineDisks []StorageAPI, modTime time.Time, etag string) {
	onlineDisks = make([]StorageAPI, len(disks))