vdev_dtl_dirty
vdev_dtl_dirty(newvd, DTL_MISSING, TXG_INITIAL,
extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d,
vdev_dtl_dirty(vd, DTL_SCRUB, txg, 1);
vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1);
vdev_dtl_dirty(vd, DTL_MISSING, txg, 1);