1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or https://opensource.org/licenses/CDDL-1.0. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2023 by iXsystems, Inc. 24 */ 25 26 #include <sys/zfs_context.h> 27 #include <sys/spa.h> 28 #include <sys/spa_impl.h> 29 #include <sys/vdev.h> 30 #include <sys/vdev_impl.h> 31 32 /* 33 * Check if the reserved boot area is in-use. This is called from 34 * spa_vdev_attach() when adding a device to a raidz vdev, to ensure that the 35 * reserved area is available as scratch space for raidz expansion. 36 * 37 * This function currently always returns 0. On Linux, there are no known 38 * external uses of the reserved area. On FreeBSD, the reserved boot area is 39 * used when booting to a ZFS root from an MBR partition. 40 * 41 * Currently nothing using libzpool can add a disk to a pool, so this does 42 * nothing. 43 */ 44 int 45 vdev_check_boot_reserve(spa_t *spa, vdev_t *childvd) 46 { 47 (void) spa; 48 (void) childvd; 49 50 return (0); 51 } 52