switch cfg.Version {
	case "29":
		// V29 -> V30
		cfg.Compression.Enabled = false
		cfg.Compression.Extensions = strings.Split(compress.DefaultExtensions, config.ValueSeparator)
		cfg.Compression.MimeTypes = strings.Split(compress.DefaultMimeTypes, config.ValueSeparator)
	case "30":
		// V30 -> V31
		cfg.OpenID = openid.Config{}
		cfg.Policy.OPA = opa.Args{
			URL:       &xnet.URL{},

		if kvs.Empty() {
			return cfg, nil
		}
		return cfg, err
	}
	if !cfg.Enabled {
		return cfg, nil
	}

	allowEnc := env.Get(EnvCompressAllowEncryption, "")
	if allowEnc == "" {
		allowEnc = env.Get(EnvCompressAllowEncryptionLegacy, kvs.Get(AllowEncrypted))
	}

	cfg.AllowEncrypted, err = config.ParseBool(allowEnc)
	if err != nil {
		return cfg, err
	}

	t.enableODirect = cfg.EnableODirect
	t.gzipObjects = cfg.GzipObjects
	t.rootAccess = cfg.RootAccess
	t.syncEvents = cfg.SyncEvents
	t.objectMaxVersions = cfg.ObjectMaxVersions

	if t.staleUploadsCleanupInterval != cfg.StaleUploadsCleanupInterval {
		t.staleUploadsCleanupInterval = cfg.StaleUploadsCleanupInterval

		// signal that cleanup interval has changed
		select {

		if err != nil {
			return cfg, fmt.Errorf("'heal:drive_workers' value invalid: %w", err)
		}
		if w < 1 {
			return cfg, fmt.Errorf("'heal:drive_workers' value invalid: zero or negative integer unsupported")
		}
		cfg.DriveWorkers = w
	} else {
		cfg.DriveWorkers = -1
	}

	return cfg, nil

		Elasticsearch: make(map[string]target.ElasticsearchArgs),
	}
	cfg.NSQ[defaultTarget] = target.NSQArgs{}
	cfg.AMQP[defaultTarget] = target.AMQPArgs{}
	cfg.MQTT[defaultTarget] = target.MQTTArgs{}
	cfg.NATS[defaultTarget] = target.NATSArgs{}
	cfg.Redis[defaultTarget] = target.RedisArgs{}
	cfg.MySQL[defaultTarget] = target.MySQLArgs{}
	cfg.Kafka[defaultTarget] = target.KafkaArgs{}
	cfg.Webhook[defaultTarget] = target.WebhookArgs{}

			dbDSN = sqlserverDSN
		}
		db, err = gorm.Open(sqlserver.Open(dbDSN), cfg)
	case "tidb":
		log.Println("testing tidb...")
		if dbDSN == "" {
			dbDSN = tidbDSN
		}
		db, err = gorm.Open(mysql.Open(dbDSN), cfg)
	default:
		log.Println("testing sqlite3...")
		db, err = gorm.Open(sqlite.Open(filepath.Join(os.TempDir(), "gorm.db")), cfg)
		if err == nil {
			db.Exec("PRAGMA foreign_keys = ON")
		}
	}

			bui.ReplicationFailedSizeV1 > 0 || bui.ReplicationPendingCountV1 > 0 {
			cfg, _ := getReplicationConfig(GlobalContext, bucket)
			if cfg != nil && cfg.RoleArn != "" {
				if dataUsageInfo.ReplicationInfo == nil {
					dataUsageInfo.ReplicationInfo = make(map[string]BucketTargetUsageInfo)
				}
				dataUsageInfo.ReplicationInfo[cfg.RoleArn] = BucketTargetUsageInfo{
					ReplicationFailedSize:   bui.ReplicationFailedSizeV1,

	defer c.mu.RUnlock()

	return c.cfg.TransitionWorkers
}

func (c *ilmConfig) update(cfg ilm.Config) {
	c.mu.Lock()
	defer c.mu.Unlock()

	c.cfg = cfg

func updateHTTPTargets(ctx context.Context, cfgs map[string]http.Config, targetsList *targetsList) (errs []error) {
	tgts := make([]*http.Target, 0)
	newWebhooks := make([]Target, 0)
	for _, cfg := range cfgs {
		if cfg.Enabled {
			t, err := http.New(cfg)
			if err != nil {
				errs = append(errs, err)
			}
			tgts = append(tgts, t)
			newWebhooks = append(newWebhooks, t)
		}
	}

func LookupConfig(kvs config.KVS) (cfg Config, err error) {
	cfg = Config{
		TransitionWorkers: 100,
		ExpirationWorkers: 100,
	}

	if err = config.CheckValidKeys(config.ILMSubSys, kvs, DefaultKVS); err != nil {
		return cfg, err
	}

	tw, err := strconv.Atoi(env.Get(EnvILMTransitionWorkers, kvs.GetWithDefault(transitionWorkers, DefaultKVS)))
	if err != nil {
		return cfg, err
	}