if rawMaxVols := os.Getenv(KubeMaxPDVols); rawMaxVols != "" {
		if parsedMaxVols, err := strconv.Atoi(rawMaxVols); err != nil {
			logger.Error(err, "Unable to parse maximum PD volumes value, using default")
		} else if parsedMaxVols <= 0 {
			logger.Error(errors.New("maximum PD volumes is negative"), "Unable to parse maximum PD volumes value, using default")
		} else {
			return parsedMaxVols
		}
	}

	return -1
}