boot/zfs/zfsimpl.c

399 vdev_read_phys(vdev_t *vdev, const blkptr_t *bp, void *buf,
405 	if (!vdev->v_phys_read)
415 	rc = vdev->v_phys_read(vdev, vdev->v_read_priv, offset, buf, psize);
425 vdev_disk_read(vdev_t *vdev, const blkptr_t *bp, void *buf,
429 	return (vdev_read_phys(vdev, bp, buf,
435 vdev_mirror_read(vdev_t *vdev, const blkptr_t *bp, void *buf,
442 	STAILQ_FOREACH(kid, &vdev->v_children, v_childlink) {
454 vdev_replacing_read(vdev_t *vdev, const blkptr_t *bp, void *buf,
466 	kid = STAILQ_FIRST(&vdev->v_children);
477 	vdev_t *vdev;
479 	STAILQ_FOREACH(vdev, &zfs_vdevs, v_alllink)
480 		if (vdev->v_guid == guid)
481 			return (vdev);
489 	vdev_t *vdev;
491 	vdev = malloc(sizeof(vdev_t));
492 	memset(vdev, 0, sizeof(vdev_t));
493 	STAILQ_INIT(&vdev->v_children);
494 	vdev->v_guid = guid;
495 	vdev->v_state = VDEV_STATE_OFFLINE;
496 	vdev->v_read = read;
497 	vdev->v_phys_read = 0;
498 	vdev->v_read_priv = 0;
499 	STAILQ_INSERT_TAIL(&zfs_vdevs, vdev, v_alllink);
501 	return (vdev);
512 	vdev_t *vdev, *kid;
523 		printf("ZFS: can't find vdev details\n");
551 	vdev = vdev_find(guid);
552 	if (!vdev) {
556 			vdev = vdev_create(guid, vdev_mirror_read);
558 			vdev = vdev_create(guid, vdev_raidz_read);
560 			vdev = vdev_create(guid, vdev_replacing_read);
562 			vdev = vdev_create(guid, vdev_disk_read);
564 		vdev->v_id = id;
565 		vdev->v_top = pvdev != NULL ? pvdev : vdev;
568 			vdev->v_ashift = ashift;
570 			vdev->v_ashift = 0;
573 			vdev->v_nparity = nparity;
575 			vdev->v_nparity = 0;
580 			vdev->v_name = strdup(path);
583 				if (vdev->v_nparity == 1)
584 					vdev->v_name = "raidz1";
585 				else if (vdev->v_nparity == 2)
586 					vdev->v_name = "raidz2";
587 				else if (vdev->v_nparity == 3)
588 					vdev->v_name = "raidz3";
594 				vdev->v_name = strdup(type);
603 		 * This is either new vdev or we've already seen this vdev,
604 		 * but from an older vdev label, so let's refresh its state
608 			vdev->v_state = VDEV_STATE_OFFLINE;
610 			vdev->v_state = VDEV_STATE_REMOVED;
612 			vdev->v_state = VDEV_STATE_FAULTED;
614 			vdev->v_state = VDEV_STATE_DEGRADED;
616 			vdev->v_state = VDEV_STATE_CANT_OPEN;
625 		vdev->v_nchildren = nkids;
627 			rc = vdev_init_from_nvlist(kids, vdev, &kid, is_newer);
631 				STAILQ_INSERT_TAIL(&vdev->v_children, kid,
636 		vdev->v_nchildren = 0;
640 		*vdevp = vdev;
645 vdev_set_state(vdev_t *vdev)
656 	if (STAILQ_FIRST(&vdev->v_children)) {
659 		STAILQ_FOREACH(kid, &vdev->v_children, v_childlink) {
666 			vdev->v_state = VDEV_STATE_HEALTHY;
668 			if (vdev->v_read == vdev_mirror_read) {
670 					vdev->v_state = VDEV_STATE_DEGRADED;
672 					vdev->v_state = VDEV_STATE_OFFLINE;
674 			} else if (vdev->v_read == vdev_raidz_read) {
675 				if (bad_kids > vdev->v_nparity) {
676 					vdev->v_state = VDEV_STATE_OFFLINE;
678 					vdev->v_state = VDEV_STATE_DEGRADED;
720 	vdev_t *vdev;
727 	vdev = STAILQ_FIRST(&spa->spa_vdevs);
728 	if (vdev == NULL)
730 	for (kid = STAILQ_FIRST(&vdev->v_children); kid != NULL;
731 	     kid = STAILQ_FIRST(&vdev->v_children))
732 		vdev = kid;
733 	return (vdev);
804 vdev_status(vdev_t *vdev, int indent)
807 	print_state(indent, vdev->v_name, vdev->v_state);
809 	STAILQ_FOREACH(kid, &vdev->v_children, v_childlink) {
819 	vdev_t *vdev;
837 	STAILQ_FOREACH(vdev, &spa->spa_vdevs, v_childlink) {
838 		if (vdev->v_state == VDEV_STATE_HEALTHY)
840 		else if (vdev->v_state == VDEV_STATE_DEGRADED)
853 	STAILQ_FOREACH(vdev, &spa->spa_vdevs, v_childlink) {
854 		vdev_status(vdev, 1);
878 	vdev_t *vdev, *top_vdev, *pool_vdev;
894 	 * Load the vdev label and figure out which
985 	 * Get the vdev tree and create our in-core copy of it.
986 	 * If we already have a vdev with this guid, this must
995 	vdev = vdev_find(guid);
996 	if (vdev && vdev->v_phys_read)	/* Has this vdev already been inited? */
1010 	 * Add the toplevel vdev to the pool if its not already there.
1019 	 * We should already have created an incomplete vdev for this
1020 	 * vdev. Find it and initialise it with our read proc.
1022 	vdev = vdev_find(guid);
1023 	if (vdev) {
1024 		vdev->v_phys_read = read;
1025 		vdev->v_read_priv = read_priv;
1026 		vdev->v_state = VDEV_STATE_HEALTHY;
1033 	 * Re-evaluate top-level vdev state.
1042 	upbuf = zfs_alloc(VDEV_UBERBLOCK_SIZE(vdev));
1045 	     i < VDEV_UBERBLOCK_COUNT(vdev);
1047 		off = VDEV_UBERBLOCK_OFFSET(vdev, i);
1050 		BP_SET_LSIZE(&bp, VDEV_UBERBLOCK_SIZE(vdev));
1051 		BP_SET_PSIZE(&bp, VDEV_UBERBLOCK_SIZE(vdev));
1056 		if (vdev_read_phys(vdev, &bp, upbuf, off, 0))
1070 	zfs_free(upbuf, VDEV_UBERBLOCK_SIZE(vdev));
1137 		vdev_t *vdev;
1146 		STAILQ_FOREACH(vdev, &spa->spa_vdevs, v_childlink) {
1147 			if (vdev->v_id == vdevid)
1150 		if (!vdev || !vdev->v_read)
1154 		if (vdev->v_read == vdev_raidz_read) {
1155 			align = 1ULL << vdev->v_top->v_ashift;
1167 			error = vdev->v_read(vdev, bp, pbuf, offset, size);