spec *volume.Spec,
	newSize resource.Quantity,
	oldSize resource.Quantity) (resource.Quantity, error) {
	klog.V(4).Infof("Expanding: %s from %v to %v", spec.Name(), oldSize, newSize)
	err := plugin.util.ResizeVolume(spec, newSize, plugin.host)
	if err != nil {
		return oldSize, err
	}

	klog.V(4).Infof("Successfully resized %s to %v", spec.Name(), newSize)
	return newSize, nil
}