diff options
Diffstat (limited to 'sys/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c')
| -rw-r--r-- | sys/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/sys/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c b/sys/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c deleted file mode 100644 index 0e8752c..0000000 --- a/sys/contrib/opensolaris/uts/common/fs/zfs/vdev_root.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright 2006 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#pragma ident "%Z%%M% %I% %E% SMI" - -#include <sys/zfs_context.h> -#include <sys/spa.h> -#include <sys/vdev_impl.h> -#include <sys/zio.h> -#include <sys/fs/zfs.h> - -/* - * Virtual device vector for the pool's root vdev. - */ - -/* - * We should be able to tolerate one failure with absolutely no damage - * to our metadata. Two failures will take out space maps, a bunch of - * indirect block trees, meta dnodes, dnodes, etc. Probably not a happy - * place to live. When we get smarter, we can liberalize this policy. - * e.g. If we haven't lost two consecutive top-level vdevs, then we are - * probably fine. Adding bean counters during alloc/free can make this - * future guesswork more accurate. - */ -/*ARGSUSED*/ -static int -too_many_errors(vdev_t *vd, int numerrors) -{ - return (numerrors > 0); -} - -static int -vdev_root_open(vdev_t *vd, uint64_t *asize, uint64_t *ashift) -{ - vdev_t *cvd; - int c, error; - int lasterror = 0; - int numerrors = 0; - - if (vd->vdev_children == 0) { - vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; - return (EINVAL); - } - - for (c = 0; c < vd->vdev_children; c++) { - cvd = vd->vdev_child[c]; - - if ((error = vdev_open(cvd)) != 0) { - lasterror = error; - numerrors++; - continue; - } - } - - if (too_many_errors(vd, numerrors)) { - vd->vdev_stat.vs_aux = VDEV_AUX_NO_REPLICAS; - return (lasterror); - } - - *asize = 0; - *ashift = 0; - - return (0); -} - -static void -vdev_root_close(vdev_t *vd) -{ - int c; - - for (c = 0; c < vd->vdev_children; c++) - vdev_close(vd->vdev_child[c]); -} - -static void -vdev_root_state_change(vdev_t *vd, int faulted, int degraded) -{ - if (too_many_errors(vd, faulted)) - vdev_set_state(vd, B_FALSE, VDEV_STATE_CANT_OPEN, - VDEV_AUX_NO_REPLICAS); - else if (degraded != 0) - vdev_set_state(vd, B_FALSE, VDEV_STATE_DEGRADED, VDEV_AUX_NONE); - else - vdev_set_state(vd, B_FALSE, VDEV_STATE_HEALTHY, VDEV_AUX_NONE); -} - -vdev_ops_t vdev_root_ops = { - vdev_root_open, - vdev_root_close, - vdev_default_asize, - NULL, /* io_start - not applicable to the root */ - NULL, /* io_done - not applicable to the root */ - vdev_root_state_change, - VDEV_TYPE_ROOT, /* name of this vdev type */ - B_FALSE /* not a leaf vdev */ -}; |
