case storagebackend.StorageTypeUnset, storagebackend.StorageTypeETCD3:
		return newETCD3HealthCheck(c, stopCh)
	default:
		return nil, fmt.Errorf("unknown storage type: %s", c.Type)
	}
}

func CreateReadyCheck(c storagebackend.Config, stopCh <-chan struct{}) (func() error, error) {
	switch c.Type {
	case storagebackend.StorageTypeETCD2:
		return nil, fmt.Errorf("%s is no longer a supported storage backend", c.Type)

	if err != nil {
		return err
	}
	c.AddHealthChecks(healthz.NamedCheck("etcd", func(r *http.Request) error {
		return healthCheck()
	}))

	readyCheck, err := storagefactory.CreateReadyCheck(s.StorageConfig, c.DrainedNotify())
	if err != nil {
		return err
	}
	c.AddReadyzChecks(healthz.NamedCheck("etcd-readiness", func(r *http.Request) error {
		return readyCheck()
	}))

	return nil