[]string{namespaceLabel}, nil,
		metrics.ALPHA, "")

	volumeOperationErrorsMetric = metrics.NewCounterVec(
		&metrics.CounterOpts{
			Name:           "volume_operation_total_errors",
			Help:           "Total volume operation errors",
			StabilityLevel: metrics.ALPHA,
		},
		[]string{"plugin_name", "operation_name"})

	retroactiveStorageClassMetric = metrics.NewCounter(

		ctrl.scheduleOperation(logger, opName, func() error {
			_, err := ctrl.deleteVolumeOperation(ctx, volume)
			if err != nil {
				// only report error count to "volume_operation_total_errors"
				// latency reporting will happen when the volume get finally
				// deleted and a volume deleted event is captured
				metrics.RecordMetric(volume.Name, &ctrl.operationTimestamps, err)
			}