func NewS3PeerSys(endpoints EndpointServerPools) *S3PeerSys {
	return &S3PeerSys{
		peerClients: newPeerS3Clients(endpoints),
		poolsCount:  len(endpoints),
	}
}

// HealBucket - heals buckets at node level
func (sys *S3PeerSys) HealBucket(ctx context.Context, bucket string, opts madmin.HealOpts) (madmin.HealResultItem, error) {
	g := errgroup.WithNErrs(len(sys.peerClients))

	for idx, client := range sys.peerClients {

	copy(healBuckets, buckets)

	objAPI := newObjectLayerFn()
	if objAPI == nil {
		return errServerNotInitialized
	}

	for _, bucket := range healBuckets {
		_, err := objAPI.HealBucket(ctx, bucket, madmin.HealOpts{ScanMode: scanMode})
		if err != nil {
			// Log bucket healing error if any, we shall retry again.
			healingLogIf(ctx, err)
		}
	}

		return buckets[i].Created.After(buckets[j].Created)
	})

	for _, bucket := range buckets {
		if err = h.healBucket(objAPI, bucket.Name, bucketsOnly); err != nil {
			return err
		}
	}

	return nil
}

// healBucket - traverses and heals given bucket
func (h *healSequence) healBucket(objAPI ObjectLayer, bucket string, bucketsOnly bool) error {

			// wait on timer per heal
			wait := healSleeper.Timer(context.Background())

			scan := madmin.HealNormalScan
			if u.scanMode != 0 {
				scan = u.scanMode
			}
			if u.object == "" {
				healBucket(u.bucket, scan)
			} else {
				if u.allVersions {
					z.serverPools[u.poolIndex].sets[u.setIndex].listAndHeal(u.bucket, u.object, u.scanMode, healObjectVersionsDisparity)
				} else {

			switch task.bucket {
			case nopHeal:
				err = errSkipFile
			case SlashSeparator:
				res, err = healDiskFormat(ctx, objAPI, task.opts)
			default:
				if task.object == "" {
					res, err = objAPI.HealBucket(ctx, task.bucket, task.opts)
				} else {
					res, err = objAPI.HealObject(ctx, task.bucket, task.object, task.versionID, task.opts)
				}
			}

			if bgSeq != nil {

	SetDriveCounts() []int                              // list of erasure stripe size for each pool in order.

	// Healing operations.
	HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error)
	HealBucket(ctx context.Context, bucket string, opts madmin.HealOpts) (madmin.HealResultItem, error)
	HealObject(ctx context.Context, bucket, object, versionID string, opts madmin.HealOpts) (madmin.HealResultItem, error)

			// Sleep and stagger to avoid blocked CPU and thundering
			// herd upon start up sequence.
			time.Sleep(25*time.Millisecond + time.Duration(rand.Int63n(int64(100*time.Millisecond))))

			_, _ = sys.objAPI.HealBucket(ctx, buckets[index].Name, madmin.HealOpts{Recreate: true})
			meta, err := loadBucketMetadata(ctx, sys.objAPI, buckets[index].Name)
			if err != nil {
				return err
			}
			bucketMetas[index] = meta
			return nil

	// created when the disk was down.
	err = os.RemoveAll(path.Join(fsDirs[0], bucket))
	if err != nil {
		t.Fatal(err)
	}
	// This would create the bucket.
	_, err = obj.HealBucket(ctx, bucket, madmin.HealOpts{
		DryRun: false,
		Remove: false,
	})
	if err != nil {
		t.Fatal(err)
	}
	// Stat the bucket to make sure that it was created.

	if z.SinglePool() {
		return errInvalidArgument
	}

	decomBuckets, err := z.getBucketsToDecommission(ctx)
	if err != nil {
		return err
	}

	for _, bucket := range decomBuckets {
		z.HealBucket(ctx, bucket.Name, madmin.HealOpts{})
	}

	// Create .minio.sys/config, .minio.sys/buckets paths if missing,
	// this code is present to avoid any missing meta buckets on other
	// pools.

		return r, errNoHealRequired
	}

	return r, nil
}

func (z *erasureServerPools) HealBucket(ctx context.Context, bucket string, opts madmin.HealOpts) (madmin.HealResultItem, error) {
	// .metadata.bin healing is not needed here, it is automatically healed via read() call.
	return z.s3Peer.HealBucket(ctx, bucket, opts)
}

// Walk a bucket, optionally prefix recursively, until we have returned