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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/zfs_context.h> 30 #include <sys/spa.h> 31 #include <sys/vdev_impl.h> 32 #include <sys/zio.h> 33 #include <sys/fs/zfs.h> 34 35 /* 36 * Virtual device vector for the pool's root vdev. 37 */ 38 39 static int 40 vdev_root_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift) 41 { 42 vdev_t *cvd; 43 int c, error; 44 int lasterror = 0; 45 46 if (vd->vdev_children == 0) { 47 vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; 48 return (EINVAL); 49 } 50 51 for (c = 0; c < vd->vdev_children; c++) { 52 cvd = vd->vdev_child[c]; 53 54 if ((error = vdev_open(cvd)) != 0) { 55 lasterror = error; 56 continue; 57 } 58 59 *asize += cvd->vdev_asize; 60 *ashift = MAX(*ashift, cvd->vdev_ashift); 61 } 62 63 if (lasterror) 64 vd->vdev_stat.vs_aux = VDEV_AUX_NO_REPLICAS; 65 66 return (lasterror); 67 } 68 69 static void 70 vdev_root_close(vdev_t *vd) 71 { 72 int c; 73 74 for (c = 0; c < vd->vdev_children; c++) 75 vdev_close(vd->vdev_child[c]); 76 } 77 78 static void 79 vdev_root_state_change(vdev_t *vd, int faulted, int degraded) 80 { 81 if (faulted > 0) 82 vdev_set_state(vd, VDEV_STATE_CANT_OPEN, VDEV_AUX_NO_REPLICAS); 83 else if (degraded != 0) 84 vdev_set_state(vd, VDEV_STATE_DEGRADED, VDEV_AUX_NONE); 85 else 86 vdev_set_state(vd, VDEV_STATE_HEALTHY, VDEV_AUX_NONE); 87 } 88 89 vdev_ops_t vdev_root_ops = { 90 vdev_root_open, 91 vdev_root_close, 92 vdev_default_asize, 93 NULL, /* io_start - not applicable to the root */ 94 NULL, /* io_done - not applicable to the root */ 95 vdev_root_state_change, 96 VDEV_TYPE_ROOT, /* name of this vdev type */ 97 B_FALSE /* not a leaf vdev */ 98 }; 99