func (s *TestSuiteCommon) RestartTestServer(c *check) {
	// Shutdown.
	s.testServer.cancel()
	s.testServer.Server.Close()
	s.testServer.Obj.Shutdown(context.Background())

	// Restart.
	ctx, cancel := context.WithCancel(context.Background())

	s.testServer.cancel = cancel
	s.testServer = initTestServerWithBackend(ctx, c, s.testServer, s.testServer.Obj, s.testServer.rawDiskPaths)
	if s.secure {
		s.testServer.Server.StartTLS()