1789Sahrens /* 2789Sahrens * CDDL HEADER START 3789Sahrens * 4789Sahrens * The contents of this file are subject to the terms of the 51544Seschrock * Common Development and Distribution License (the "License"). 61544Seschrock * You may not use this file except in compliance with the License. 7789Sahrens * 8789Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9789Sahrens * or http://www.opensolaris.org/os/licensing. 10789Sahrens * See the License for the specific language governing permissions 11789Sahrens * and limitations under the License. 12789Sahrens * 13789Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14789Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15789Sahrens * If applicable, add the following below this CDDL HEADER, with the 16789Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17789Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18789Sahrens * 19789Sahrens * CDDL HEADER END 20789Sahrens */ 21789Sahrens /* 221544Seschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23789Sahrens * Use is subject to license terms. 24789Sahrens */ 25789Sahrens 26789Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 27789Sahrens 28789Sahrens #include <sys/zfs_context.h> 29789Sahrens #include <sys/spa.h> 30789Sahrens #include <sys/vdev_impl.h> 31789Sahrens #include <sys/zio.h> 32789Sahrens #include <sys/fs/zfs.h> 33789Sahrens 34789Sahrens /* 35789Sahrens * Virtual device vector for the pool's root vdev. 36789Sahrens */ 37789Sahrens 38789Sahrens static int 39789Sahrens vdev_root_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift) 40789Sahrens { 41789Sahrens vdev_t *cvd; 42789Sahrens int c, error; 43789Sahrens int lasterror = 0; 44789Sahrens 45789Sahrens if (vd->vdev_children == 0) { 46789Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; 47789Sahrens return (EINVAL); 48789Sahrens } 49789Sahrens 50789Sahrens for (c = 0; c < vd->vdev_children; c++) { 51789Sahrens cvd = vd->vdev_child[c]; 52789Sahrens 53789Sahrens if ((error = vdev_open(cvd)) != 0) { 54789Sahrens lasterror = error; 55789Sahrens continue; 56789Sahrens } 57789Sahrens } 58789Sahrens 59789Sahrens if (lasterror) 60789Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_NO_REPLICAS; 61789Sahrens 62*1732Sbonwick *asize = 0; 63*1732Sbonwick *ashift = 0; 64*1732Sbonwick 65789Sahrens return (lasterror); 66789Sahrens } 67789Sahrens 68789Sahrens static void 69789Sahrens vdev_root_close(vdev_t *vd) 70789Sahrens { 71789Sahrens int c; 72789Sahrens 73789Sahrens for (c = 0; c < vd->vdev_children; c++) 74789Sahrens vdev_close(vd->vdev_child[c]); 75789Sahrens } 76789Sahrens 77789Sahrens static void 78789Sahrens vdev_root_state_change(vdev_t *vd, int faulted, int degraded) 79789Sahrens { 80789Sahrens if (faulted > 0) 811544Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, 821544Seschrock VDEV_AUX_NO_REPLICAS); 83789Sahrens else if (degraded != 0) 841544Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, VDEV_AUX_NONE); 85789Sahrens else 861544Seschrock vdev_set_state(vd, B_FALSE, VDEV_STATE_HEALTHY, VDEV_AUX_NONE); 87789Sahrens } 88789Sahrens 89789Sahrens vdev_ops_t vdev_root_ops = { 90789Sahrens vdev_root_open, 91789Sahrens vdev_root_close, 92789Sahrens vdev_default_asize, 93789Sahrens NULL, /* io_start - not applicable to the root */ 94789Sahrens NULL, /* io_done - not applicable to the root */ 95789Sahrens vdev_root_state_change, 96789Sahrens VDEV_TYPE_ROOT, /* name of this vdev type */ 97789Sahrens B_FALSE /* not a leaf vdev */ 98789Sahrens }; 99