func (c *closeNotifier) Read(p []byte) (n int, err error) {
	n, err = c.rc.Read(p)
	if err != nil {
		if c.done != nil {
			xioutil.SafeClose(c.done)
			c.done = nil
		}
	}
	return n, err
}

func (c *closeNotifier) Close() error {
	if c.done != nil {
		xioutil.SafeClose(c.done)
		c.done = nil
	}
	return c.rc.Close()
}

// keepHTTPReqResponseAlive can be used to avoid timeouts with long storage

			disks, infos, _ := set.getOnlineDisksWithHealingAndInfo(true)
			if len(disks) == 0 {
				xioutil.SafeClose(results)
				cancel()
				return fmt.Errorf("Walk: no online disks found in pool %d, set %d", setIdx, poolIdx)
			}
			go func() {
				defer xioutil.SafeClose(listOut)
				send := func(e metaCacheEntry) {
					if e.isDir() {
						// Ignore directories.
						return
					}

	if contextCanceled(ctx) {
		xioutil.SafeClose(updates)
		return dataUsageCache{}, ctx.Err()
	}

	if err := p.checkDiskStale(); err != nil {
		xioutil.SafeClose(updates)
		return dataUsageCache{}, err
	}

	weSleep := func() bool {
		return scannerIdleMode.Load() == 0
	}

		}
	}
	for _, idx := range permutes {
		b := buckets[idx]
		if e := oldCache.find(b.Name); e != nil {
			cache.replace(b.Name, dataUsageRoot, *e)
			bucketCh <- b
		}
	}
	xioutil.SafeClose(bucketCh)

	bucketResults := make(chan dataUsageEntryInfo, len(disks))

	// Start async collector/saver.
	// This goroutine owns the cache.
	var saverWg sync.WaitGroup
	saverWg.Add(1)
	go func() {

	return nil
}

func (client *storageRESTClient) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, _ func() bool) (dataUsageCache, error) {
	defer xioutil.SafeClose(updates)

	st, err := storageNSScannerRPC.Call(ctx, client.gridConn, &nsScannerOptions{
		DiskID:   *client.diskID.Load(),
		ScanMode: int(scanMode),
		Cache:    &cache,
	})
	if err != nil {

		i := i
		go p.AddLargeWorker(p.lrgworkers[i])
	}
	go func() {
		<-p.ctx.Done()
		for i := 0; i < LargeWorkerCount; i++ {
			xioutil.SafeClose(p.lrgworkers[i])
		}
	}()
}

// AddLargeWorker adds a replication worker to the static pool for large uploads.
func (p *ReplicationPool) AddLargeWorker(input <-chan ReplicationWorkerOperation) {
	for {

		Opts:     minio.PutObjectOptions{},
		InMemory: *r.Source.Snowball.InMemory,
		Compress: *r.Source.Snowball.Compress,
		SkipErrs: *r.Source.Snowball.SkipErrs,
	}

	go func() {
		defer xioutil.SafeClose(input)

		for _, entry := range entries {
			gr, err := objAPI.GetObjectNInfo(ctx, r.Source.Bucket,
				entry.Name, nil, nil, ObjectOptions{
					VersionID: entry.VersionID,
				})
			if err != nil {

					entry, _ = entries.firstFound()
				}
				jt.Take()
				go healEntry(bucket, *entry)
			},
			finished: nil,
		})
		jt.Wait() // synchronize all the concurrent heal jobs
		xioutil.SafeClose(results)
		if err != nil {
			// Set this such that when we return this function
			// we let the caller retry this disk again for the
			// buckets it failed to list.
			retErr = err
			healingLogIf(ctx, err)

	}

	for _, err := range g.Wait() {
		if err != nil {
			return err
		}
	}
	select {
	case _, ok := <-s.setReconnectEvent:
		if ok {
			xioutil.SafeClose(s.setReconnectEvent)
		}
	default:
		xioutil.SafeClose(s.setReconnectEvent)
	}
	return nil
}

// hashes the key returning an integer based on the input algorithm.
// This function currently supports
// - CRCMOD
// - SIPMOD

	}
	return false
}

func (z *erasureServerPools) rebalanceBuckets(ctx context.Context, poolIdx int) (err error) {
	doneCh := make(chan error, 1)
	defer xioutil.SafeClose(doneCh)

	// Save rebalance.bin periodically.
	go func() {
		// Update rebalance.bin periodically once every 5-10s, chosen randomly
		// to avoid multiple pool leaders herding to update around the same
		// time.