fs/zfs/vdev.c

343 	vdev_t *pvd = vd->vdev_parent;
349 	if (pvd == NULL)
363 	if (pvd->vdev_ops == &vdev_raidz_ops)
364 		return ((pvd->vdev_min_asize + pvd->vdev_children - 1) /
365 		    pvd->vdev_children);
367 	return (pvd->vdev_min_asize);
431 vdev_add_child(vdev_t *pvd, vdev_t *cvd)
441 	cvd->vdev_parent = pvd;
443 	if (pvd == NULL)
446 	ASSERT(id >= pvd->vdev_children || pvd->vdev_child[id] == NULL);
448 	oldsize = pvd->vdev_children * sizeof (vdev_t *);
449 	pvd->vdev_children = MAX(pvd->vdev_children, id + 1);
450 	newsize = pvd->vdev_children * sizeof (vdev_t *);
453 	if (pvd->vdev_child != NULL) {
454 		bcopy(pvd->vdev_child, newchild, oldsize);
455 		kmem_free(pvd->vdev_child, oldsize);
458 	pvd->vdev_child = newchild;
459 	pvd->vdev_child[id] = cvd;
461 	cvd->vdev_top = (pvd->vdev_top ? pvd->vdev_top: cvd);
467 	for (; pvd != NULL; pvd = pvd->vdev_parent)
468 		pvd->vdev_guid_sum += cvd->vdev_guid_sum;
472 vdev_remove_child(vdev_t *pvd, vdev_t *cvd)
477 	ASSERT(cvd->vdev_parent == pvd);
479 	if (pvd == NULL)
482 	ASSERT(id < pvd->vdev_children);
483 	ASSERT(pvd->vdev_child[id] == cvd);
485 	pvd->vdev_child[id] = NULL;
488 	for (c = 0; c < pvd->vdev_children; c++)
489 		if (pvd->vdev_child[c])
492 	if (c == pvd->vdev_children) {
493 		kmem_free(pvd->vdev_child, c * sizeof (vdev_t *));
494 		pvd->vdev_child = NULL;
495 		pvd->vdev_children = 0;
501 	for (; pvd != NULL; pvd = pvd->vdev_parent)
502 		pvd->vdev_guid_sum -= cvd->vdev_guid_sum;
509 vdev_compact_children(vdev_t *pvd)
512 	int oldc = pvd->vdev_children;
515 	ASSERT(spa_config_held(pvd->vdev_spa, SCL_ALL, RW_WRITER) == SCL_ALL);
521 		if (pvd->vdev_child[c])
528 			if ((cvd = pvd->vdev_child[c]) != NULL) {
537 	kmem_free(pvd->vdev_child, oldc * sizeof (vdev_t *));
538 	pvd->vdev_child = newchild;
539 	pvd->vdev_children = newc;
1105 	vdev_t *pvd = cvd->vdev_parent;
1122 	vdev_remove_child(pvd, cvd);
1123 	vdev_add_child(pvd, mvd);
1141 	vdev_t *pvd = mvd->vdev_parent;
1154 	vdev_remove_child(pvd, mvd);
1169 	vdev_add_child(pvd, cvd);
2065 	vdev_t *pvd = vd->vdev_parent;
2073 	if (pvd != NULL && pvd->vdev_reopening)
2074 		vd->vdev_reopening = (pvd->vdev_reopening && !vd->vdev_offline);
3276 	vdev_t *vd, *tvd, *pvd, *rvd = spa->spa_root_vdev;
3299 		for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
3300 			pvd->vdev_expanding = !!(flags & ZFS_ONLINE_EXPAND);
3307 		for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
3308 			pvd->vdev_expanding = B_FALSE;
3716 	vdev_t *pvd;
3842 			for (pvd = vd; pvd != rvd; pvd = pvd->vdev_parent)
3843 				vdev_dtl_dirty(pvd, DTL_PARTIAL, txg, 1);
4326 	vdev_t *cvd, *pvd = vd->vdev_parent;
4328 	vdev_remove_child(pvd, vd);
4329 	vdev_compact_children(pvd);
4331 	cvd = pvd->vdev_child[0];
4332 	if (pvd->vdev_children == 1) {