var got dataUsageCache
	err = got.deserialize(&buf)
	if err != nil {
		t.Fatal(err)
	}
	if got.Info.LastUpdate.IsZero() {
		t.Error("lastupdate not set")
	}

	if !want.Info.LastUpdate.Equal(got.Info.LastUpdate) {
		t.Fatalf("deserialize LastUpdate mismatch\nwant: %+v\ngot:  %+v", want, got)
	}
	if len(want.Cache) != len(got.Cache) {

			}
		case "st":
			z.StartTime, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "StartTime")
				return
			}
		case "lu":
			z.LastUpdate, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "LastUpdate")
				return
			}
		case "ra":
			z.RetryAttempts, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "RetryAttempts")
				return
			}

				return
			}
		case "Started":
			z.Started, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "Started")
				return
			}
		case "LastUpdate":
			z.LastUpdate, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "LastUpdate")
				return
			}
		case "ObjectsTotalCount":
			z.ObjectsTotalCount, err = dc.ReadUint64()
			if err != nil {
				err = msgp.WrapError(err, "ObjectsTotalCount")

	nmeta1.Pools = append(nmeta1.Pools, meta.Pools...)
	for i, pool := range nmeta1.Pools {
		if i == 0 {
			nmeta1.Pools[i] = PoolStatus{
				CmdLine:    pool.CmdLine,
				ID:         i,
				LastUpdate: UTCNow(),
				Decommission: &PoolDecommissionInfo{
					Complete: true,
				},
			}
		}
	}

	var nmeta2 poolMeta
	nmeta2.Version = poolMetaVersion
	nmeta2.Pools = append(nmeta2.Pools, meta.Pools...)

		PoolIndex:         h.PoolIndex,
		SetIndex:          h.SetIndex,
		DiskIndex:         h.DiskIndex,
		Finished:          h.Finished,
		Path:              h.Path,
		Started:           h.Started.UTC(),
		LastUpdate:        h.LastUpdate.UTC(),
		ObjectsTotalCount: h.ObjectsTotalCount,
		ObjectsTotalSize:  h.ObjectsTotalSize,
		ItemsHealed:       h.ItemsHealed,
		ItemsSkipped:      h.ItemsSkipped,
		ItemsFailed:       h.ItemsFailed,

	dui, err := c.dataUsageInfo.Get()
	if err != nil {
		metricsLogIf(ctx, err)
	} else {
		m.Set(scannerLastActivitySeconds, time.Since(dui.LastUpdate).Seconds())
	}

	return nil

				exit = true
			}
			m.mu.RLock()
			for _, v := range m.buckets {
				if !exit {
					v.cleanup()
				}
			}
			m.mu.RUnlock()
			m.mu.Lock()
			for k, v := range m.trash {
				if time.Since(v.lastUpdate) > metacacheMaxRunningAge {
					v.delete(context.Background())
					delete(m.trash, k)
				}
			}
			m.mu.Unlock()
		}
	}()
}

// updateCacheEntry will update non-transient state.

			}
		case "id":
			z.ID, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "ID")
				return
			}
		case "lu":
			z.LastUpdate, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "LastUpdate")
				return
			}
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	return
}

		return
	}
	if otherRoot == nil {
		return
	}
	if existingRoot == nil {
		*d = other.clone()
		return
	}
	if other.Info.LastUpdate.After(d.Info.LastUpdate) {
		d.Info.LastUpdate = other.Info.LastUpdate
	}
	existingRoot.merge(*otherRoot)
	eHash := d.rootHash()
	for key := range otherRoot.Children {
		entry := other.Cache[key]
		flat := other.flatten(entry)

					wait() // wait to proceed to next entry.
					continue
				}

				sys.Lock()
				// Update if the bucket metadata in the memory is older than on-disk one
				if lu := sys.metadataMap[bucket].lastUpdate(); lu.Before(meta.lastUpdate()) {
					updated = true
					sys.metadataMap[bucket] = meta
				}
				sys.Unlock()

				if updated {
					globalEventNotifier.set(bucket, meta)
					globalBucketTargetSys.set(bucket, meta)