var_idx, handle.name(), variable, handle.definition_stack_trace());
    if (variables_updated != nullptr &&
        variables_updated->find(var_idx) == variables_updated->end()) {
      variable_info.set_read_only();
    }
  }
  return absl::OkStatus();
}

Status LockVariables(absl::Span<VariableInfo*> variables) {
  std::vector<int> lock_order(variables.size());
  std::iota(lock_order.begin(), lock_order.end(), 0);

	sourceDriver, err := getDriver(spec)
	if err != nil {
		return nil, err
	}

	readOnly, err := getReadOnly(spec)
	if err != nil {
		return nil, err
	}

	var metricsProvider volume.MetricsProvider
	if plugin.capabilities.SupportsMetrics {
		metricsProvider = volume.NewMetricsStatFS(plugin.host.GetPodVolumeDir(