VDEV_AUX_VERSION_NEWER
case VDEV_AUX_VERSION_NEWER:
case VDEV_AUX_VERSION_NEWER:
case VDEV_AUX_VERSION_NEWER:
vs->vs_aux == VDEV_AUX_VERSION_NEWER)
return (spa_vdev_err(rvd, VDEV_AUX_VERSION_NEWER, ENOTSUP));