func SetStorageClass(s config.Config, cfg Config) {
	if len(cfg.Standard.String()) == 0 && len(cfg.RRS.String()) == 0 {
		// Do not enable storage-class if no settings found.
		return
	}
	s[config.StorageClassSubSys][config.Default] = config.KVS{
		config.KV{
			Key:   ClassStandard,
			Value: cfg.Standard.String(),
		},
		config.KV{
			Key:   ClassRRS,
			Value: cfg.RRS.String(),
		},
	}

			Value: cfg.DSN,
		},
		config.KV{
			Key:   target.MySQLTable,
			Value: cfg.Table,
		},
		config.KV{
			Key:   target.MySQLHost,
			Value: cfg.Host.String(),
		},
		config.KV{
			Key:   target.MySQLPort,
			Value: cfg.Port,
		},
		config.KV{
			Key:   target.MySQLUsername,
			Value: cfg.User,
		},
		config.KV{
			Key:   target.MySQLPassword,
			Value: cfg.Password,
		},

func SetCompressionConfig(s config.Config, cfg Config) {
	if !cfg.Enabled {
		// No need to save disabled settings in new config.
		return
	}
	s[config.CompressionSubSys][config.Default] = config.KVS{
		config.KV{
			Key:   config.Enable,
			Value: config.EnableOn,
		},
		config.KV{
			Key:   Extensions,
			Value: strings.Join(cfg.Extensions, config.ValueSeparator),
		},
		config.KV{