cache, err = disk.NSScanner(ctx, cache, updates, healScanMode, nil)
				if err != nil {
					if !cache.Info.LastUpdate.IsZero() && cache.Info.LastUpdate.After(before) {
						scannerLogIf(ctx, cache.save(ctx, er, cacheName))
					} else {
						scannerLogIf(ctx, err)
					}
					// This ensures that we don't close
					// bucketResults channel while the
					// updates-collector goroutine still
					// holds a reference to this.

			results := make(chan DataUsageInfo, 1)
			go storeDataUsageInBackend(ctx, objAPI, results)
			err := objAPI.NSScanner(ctx, results, uint32(cycleInfo.current), scanMode)
			scannerLogIf(ctx, err)
			res := map[string]string{"cycle": strconv.FormatUint(cycleInfo.current, 10)}
			if err != nil {
				res["error"] = err.Error()
			}
			stopFn(res)
			if err == nil {
				// Store new cycle...

		d.Cache = make(map[string]dataUsageEntry, 100)
	}
	e, ok := src.Cache[hash.String()]
	if !ok {
		return
	}
	d.Cache[hash.Key()] = e
	for ch := range e.Children {
		if ch == hash.Key() {
			scannerLogIf(GlobalContext, errors.New("dataUsageCache.copyWithChildren: Circular reference"))
			return
		}
		d.copyWithChildren(src, dataUsageHash(ch), &hash)
	}
	if parent != nil {
		p := d.Cache[parent.Key()]

						results[i] = info
						mu.Unlock()
					}
				}()
				// Start scanner. Blocks until done.
				err := erObj.nsScanner(ctx, allBuckets, wantCycle, updates, healScanMode)
				if err != nil {
					scannerLogIf(ctx, err)
					mu.Lock()
					if firstErr == nil {
						firstErr = err
					}
					// Cancel remaining...
					cancel()
					mu.Unlock()
					return
				}
			}(resultIndex, erObj)
		}