2747 	vdev_t *oldvd, *newvd, *pvd;  in ztest_vdev_attach_detach()  local
2784 	oldvd = rvd->vdev_child[top];  in ztest_vdev_attach_detach()
2786 		ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);  in ztest_vdev_attach_detach()
2787 		ASSERT(oldvd->vdev_children >= zs->zs_mirrors);  in ztest_vdev_attach_detach()
2788 		oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz];  in ztest_vdev_attach_detach()
2791 		ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);  in ztest_vdev_attach_detach()
2792 		ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz);  in ztest_vdev_attach_detach()
2793 		oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz];  in ztest_vdev_attach_detach()
2800 	while (oldvd->vdev_children != 0) {  in ztest_vdev_attach_detach()
2802 		ASSERT(oldvd->vdev_children >= 2);  in ztest_vdev_attach_detach()
2803 		oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];  in ztest_vdev_attach_detach()
2806 	oldguid = oldvd->vdev_guid;  in ztest_vdev_attach_detach()
2807 	oldsize = vdev_get_min_asize(oldvd);  in ztest_vdev_attach_detach()
2808 	oldvd_is_log = oldvd->vdev_top->vdev_islog;  in ztest_vdev_attach_detach()
2809 	(void) strcpy(oldpath, oldvd->vdev_path);  in ztest_vdev_attach_detach()
2810 	pvd = oldvd->vdev_parent;  in ztest_vdev_attach_detach()
2870 	else if (newvd == oldvd)  in ztest_vdev_attach_detach()
2876 	else if (ashift > oldvd->vdev_top->vdev_ashift)  in ztest_vdev_attach_detach()