libzfs_import.c revision 99653d4ee642c6528e88224f12409a5f23060994
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * Common Development and Distribution License (the "License").
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#pragma ident "%Z%%M% %I% %E% SMI"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Pool import support functions.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * To import a pool, we rely on reading the configuration information from the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * ZFS label of each device. If we successfully read the label, then we
fa9e4066f08beec538e775443c5be79dd423fcabahrens * organize the configuration information in the following hierarchy:
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * pool guid -> toplevel vdev guid -> label txg
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Duplicate entries matching this same tuple will be discarded. Once we have
fa9e4066f08beec538e775443c5be79dd423fcabahrens * examined every device, we pick the best label txg config for each toplevel
fa9e4066f08beec538e775443c5be79dd423fcabahrens * vdev. We then arrange these toplevel vdevs into a complete pool config, and
fa9e4066f08beec538e775443c5be79dd423fcabahrens * update any paths that have changed. Finally, we attempt to import the pool
fa9e4066f08beec538e775443c5be79dd423fcabahrens * using our derived config, and record the results.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <devid.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <dirent.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <errno.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <libintl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <stdlib.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <string.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/stat.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <unistd.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <fcntl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/vdev_impl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include "libzfs.h"
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include "libzfs_impl.h"
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Intermediate structures used to gather configuration information.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct config_entry {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t ce_txg;
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t *ce_config;
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct config_entry *ce_next;
fa9e4066f08beec538e775443c5be79dd423fcabahrens} config_entry_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct vdev_entry {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t ve_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens config_entry_t *ve_configs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct vdev_entry *ve_next;
fa9e4066f08beec538e775443c5be79dd423fcabahrens} vdev_entry_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct pool_entry {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t pe_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vdev_entry_t *pe_vdevs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct pool_entry *pe_next;
fa9e4066f08beec538e775443c5be79dd423fcabahrens} pool_entry_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct name_entry {
99653d4ee642c6528e88224f12409a5f23060994eschrock char *ne_name;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t ne_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct name_entry *ne_next;
fa9e4066f08beec538e775443c5be79dd423fcabahrens} name_entry_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct pool_list {
fa9e4066f08beec538e775443c5be79dd423fcabahrens pool_entry_t *pools;
fa9e4066f08beec538e775443c5be79dd423fcabahrens name_entry_t *names;
fa9e4066f08beec538e775443c5be79dd423fcabahrens} pool_list_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic char *
fa9e4066f08beec538e775443c5be79dd423fcabahrensget_devid(const char *path)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens int fd;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ddi_devid_t devid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *minor, *ret;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((fd = open(path, O_RDONLY)) < 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens minor = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ret = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (devid_get(fd, &devid) == 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (devid_get_minor_name(fd, &minor) == 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens ret = devid_str_encode(devid, minor);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (minor != NULL)
fa9e4066f08beec538e775443c5be79dd423fcabahrens devid_str_free(minor);
fa9e4066f08beec538e775443c5be79dd423fcabahrens devid_free(devid);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock (void) close(fd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ret);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Go through and fix up any path and/or devid information for the given vdev
fa9e4066f08beec538e775443c5be79dd423fcabahrens * configuration.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrockstatic int
fa9e4066f08beec538e775443c5be79dd423fcabahrensfix_paths(nvlist_t *nv, name_entry_t *names)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t **child;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint_t c, children;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t guid;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock name_entry_t *ne, *best;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock char *path, *devid;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock int matched;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &child, &children) == 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (c = 0; c < children; c++)
99653d4ee642c6528e88224f12409a5f23060994eschrock if (fix_paths(child[c], names) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * This is a leaf (file or disk) vdev. In either case, go through
fa9e4066f08beec538e775443c5be79dd423fcabahrens * the name list and see if we find a matching guid. If so, replace
fa9e4066f08beec538e775443c5be79dd423fcabahrens * the path and see if we can calculate a new devid.
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock *
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * There may be multiple names associated with a particular guid, in
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * which case we have overlapping slices or multiple paths to the same
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * disk. If this is the case, then we want to pick the path that is
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * the most similar to the original, where "most similar" is the number
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * of matching characters starting from the end of the path. This will
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * preserve slice numbers even if the disks have been reorganized, and
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * will also catch preferred disk names if multiple paths exist.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &guid) == 0);
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) != 0)
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock path = NULL;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock matched = 0;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock best = NULL;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock for (ne = names; ne != NULL; ne = ne->ne_next) {
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock if (ne->ne_guid == guid) {
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock const char *src, *dst;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock int count;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock if (path == NULL) {
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock best = ne;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock break;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock }
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock src = ne->ne_name + strlen(ne->ne_name) - 1;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock dst = path + strlen(path) - 1;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock for (count = 0; src >= ne->ne_name && dst >= path;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock src--, dst--, count++)
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock if (*src != *dst)
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock break;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock /*
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * At this point, 'count' is the number of characters
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock * matched from the end.
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock */
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock if (count > matched || best == NULL) {
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock best = ne;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock matched = count;
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock }
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock }
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock if (best == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_string(nv, ZPOOL_CONFIG_PATH, best->ne_name) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
c67d9675bbc8392fe45f3a7dfbda1ad4daa1eb07eschrock if ((devid = get_devid(best->ne_name)) == NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) nvlist_remove_all(nv, ZPOOL_CONFIG_DEVID);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_string(nv, ZPOOL_CONFIG_DEVID, devid) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens devid_str_free(devid);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Add the given configuration to the list of known devices.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrockstatic int
99653d4ee642c6528e88224f12409a5f23060994eschrockadd_config(libzfs_handle_t *hdl, pool_list_t *pl, const char *path,
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t *config)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
99653d4ee642c6528e88224f12409a5f23060994eschrock uint64_t pool_guid, vdev_guid, top_guid, txg, state;
fa9e4066f08beec538e775443c5be79dd423fcabahrens pool_entry_t *pe;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vdev_entry_t *ve;
fa9e4066f08beec538e775443c5be79dd423fcabahrens config_entry_t *ce;
fa9e4066f08beec538e775443c5be79dd423fcabahrens name_entry_t *ne;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock /*
99653d4ee642c6528e88224f12409a5f23060994eschrock * If this is a hot spare not currently in use, add it to the list of
99653d4ee642c6528e88224f12409a5f23060994eschrock * names to translate, but don't do anything else.
99653d4ee642c6528e88224f12409a5f23060994eschrock */
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
99653d4ee642c6528e88224f12409a5f23060994eschrock &state) == 0 && state == POOL_STATE_SPARE &&
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, &vdev_guid) == 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ne = zfs_alloc(hdl, sizeof (name_entry_t))) == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ne->ne_name = zfs_strdup(hdl, path)) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock free(ne);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock ne->ne_guid = vdev_guid;
99653d4ee642c6528e88224f12409a5f23060994eschrock ne->ne_next = pl->names;
99653d4ee642c6528e88224f12409a5f23060994eschrock pl->names = ne;
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If we have a valid config but cannot read any of these fields, then
fa9e4066f08beec538e775443c5be79dd423fcabahrens * it means we have a half-initialized label. In vdev_label_init()
fa9e4066f08beec538e775443c5be79dd423fcabahrens * we write a label with txg == 0 so that we can identify the device
fa9e4066f08beec538e775443c5be79dd423fcabahrens * in case the user refers to the same disk later on. If we fail to
fa9e4066f08beec538e775443c5be79dd423fcabahrens * create the pool, we'll be left with a label in this state
fa9e4066f08beec538e775443c5be79dd423fcabahrens * which should not be considered part of a valid pool.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &pool_guid) != 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &vdev_guid) != 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_lookup_uint64(config, ZPOOL_CONFIG_TOP_GUID,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &top_guid) != 0 ||
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &txg) != 0 || txg == 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * First, see if we know about this pool. If not, then add it to the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * list of known pools.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (pe = pl->pools; pe != NULL; pe = pe->pe_next) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (pe->pe_guid == pool_guid)
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (pe == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((pe = zfs_alloc(hdl, sizeof (pool_entry_t))) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens pe->pe_guid = pool_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens pe->pe_next = pl->pools;
fa9e4066f08beec538e775443c5be79dd423fcabahrens pl->pools = pe;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Second, see if we know about this toplevel vdev. Add it if its
fa9e4066f08beec538e775443c5be79dd423fcabahrens * missing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (ve = pe->pe_vdevs; ve != NULL; ve = ve->ve_next) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ve->ve_guid == top_guid)
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ve == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ve = zfs_alloc(hdl, sizeof (vdev_entry_t))) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens ve->ve_guid = top_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ve->ve_next = pe->pe_vdevs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens pe->pe_vdevs = ve;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Third, see if we have a config with a matching transaction group. If
fa9e4066f08beec538e775443c5be79dd423fcabahrens * so, then we do nothing. Otherwise, add it to the list of known
fa9e4066f08beec538e775443c5be79dd423fcabahrens * configs.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (ce = ve->ve_configs; ce != NULL; ce = ce->ce_next) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ce->ce_txg == txg)
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (ce == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ce = zfs_alloc(hdl, sizeof (config_entry_t))) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens ce->ce_txg = txg;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ce->ce_config = config;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ce->ce_next = ve->ve_configs;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ve->ve_configs = ce;
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * At this point we've successfully added our config to the list of
fa9e4066f08beec538e775443c5be79dd423fcabahrens * known configs. The last thing to do is add the vdev guid -> path
fa9e4066f08beec538e775443c5be79dd423fcabahrens * mappings so that we can fix up the configuration as necessary before
fa9e4066f08beec538e775443c5be79dd423fcabahrens * doing the import.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ne = zfs_alloc(hdl, sizeof (name_entry_t))) == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ne->ne_name = zfs_strdup(hdl, path)) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock free(ne);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens ne->ne_guid = vdev_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ne->ne_next = pl->names;
fa9e4066f08beec538e775443c5be79dd423fcabahrens pl->names = ne;
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock/*
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock * Returns true if the named pool matches the given GUID.
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock */
99653d4ee642c6528e88224f12409a5f23060994eschrockstatic boolean_t
99653d4ee642c6528e88224f12409a5f23060994eschrockpool_active(libzfs_handle_t *hdl, const char *name, uint64_t guid)
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock{
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock zpool_handle_t *zhp;
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock uint64_t theguid;
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zhp = zpool_open_silent(hdl, name)) == NULL)
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock return (B_FALSE);
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_POOL_GUID,
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock &theguid) == 0);
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock zpool_close(zhp);
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock return (theguid == guid);
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock}
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Convert our list of pools into the definitive set of configurations. We
fa9e4066f08beec538e775443c5be79dd423fcabahrens * start by picking the best config for each toplevel vdev. Once that's done,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * we assemble the toplevel vdevs into a full config for the pool. We make a
fa9e4066f08beec538e775443c5be79dd423fcabahrens * pass to fix up any incorrect paths, and then add it to the main list to
fa9e4066f08beec538e775443c5be79dd423fcabahrens * return to the user.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic nvlist_t *
99653d4ee642c6528e88224f12409a5f23060994eschrockget_configs(libzfs_handle_t *hdl, pool_list_t *pl)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
99653d4ee642c6528e88224f12409a5f23060994eschrock pool_entry_t *pe;
99653d4ee642c6528e88224f12409a5f23060994eschrock vdev_entry_t *ve;
99653d4ee642c6528e88224f12409a5f23060994eschrock config_entry_t *ce;
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t *ret = NULL, *config = NULL, *tmp, *nvtop, *nvroot;
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t **spares;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint_t i, nspares;
99653d4ee642c6528e88224f12409a5f23060994eschrock boolean_t config_seen;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t best_txg;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *name;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfs_cmd_t zc = { 0 };
99653d4ee642c6528e88224f12409a5f23060994eschrock uint64_t version, guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *packed;
fa9e4066f08beec538e775443c5be79dd423fcabahrens size_t len;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int err;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint_t children = 0;
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t **child = NULL;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint_t c;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_alloc(&ret, 0, 0) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock for (pe = pl->pools; pe != NULL; pe = pe->pe_next) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t id;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_alloc(&config, NV_UNIQUE_NAME, 0) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock config_seen = B_FALSE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Iterate over all toplevel vdevs. Grab the pool configuration
fa9e4066f08beec538e775443c5be79dd423fcabahrens * from the first one we find, and then go through the rest and
fa9e4066f08beec538e775443c5be79dd423fcabahrens * add them as necessary to the 'vdevs' member of the config.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock for (ve = pe->pe_vdevs; ve != NULL; ve = ve->ve_next) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Determine the best configuration for this vdev by
fa9e4066f08beec538e775443c5be79dd423fcabahrens * selecting the config with the latest transaction
fa9e4066f08beec538e775443c5be79dd423fcabahrens * group.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens best_txg = 0;
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (ce = ve->ve_configs; ce != NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens ce = ce->ce_next) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (ce->ce_txg > best_txg) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens tmp = ce->ce_config;
99653d4ee642c6528e88224f12409a5f23060994eschrock best_txg = ce->ce_txg;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (!config_seen) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Copy the relevant pieces of data to the pool
fa9e4066f08beec538e775443c5be79dd423fcabahrens * configuration:
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
99653d4ee642c6528e88224f12409a5f23060994eschrock * version
fa9e4066f08beec538e775443c5be79dd423fcabahrens * pool guid
fa9e4066f08beec538e775443c5be79dd423fcabahrens * name
fa9e4066f08beec538e775443c5be79dd423fcabahrens * pool state
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t state;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock verify(nvlist_lookup_uint64(tmp,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_VERSION, &version) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_uint64(config,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_VERSION, version) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(tmp,
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZPOOL_CONFIG_POOL_GUID, &guid) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_uint64(config,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_POOL_GUID, guid) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_string(tmp,
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZPOOL_CONFIG_POOL_NAME, &name) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_string(config,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_POOL_NAME, name) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(tmp,
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZPOOL_CONFIG_POOL_STATE, &state) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_uint64(config,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_POOL_STATE, state) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock config_seen = B_TRUE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Add this top-level vdev to the child array.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_nvlist(tmp,
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZPOOL_CONFIG_VDEV_TREE, &nvtop) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(nvtop, ZPOOL_CONFIG_ID,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &id) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (id >= children) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t **newchild;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock newchild = zfs_alloc(hdl, (id + 1) *
fa9e4066f08beec538e775443c5be79dd423fcabahrens sizeof (nvlist_t *));
99653d4ee642c6528e88224f12409a5f23060994eschrock if (newchild == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (c = 0; c < children; c++)
fa9e4066f08beec538e775443c5be79dd423fcabahrens newchild[c] = child[c];
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens free(child);
fa9e4066f08beec538e775443c5be79dd423fcabahrens child = newchild;
fa9e4066f08beec538e775443c5be79dd423fcabahrens children = id + 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_dup(nvtop, &child[id], 0) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &guid) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Look for any missing top-level vdevs. If this is the case,
fa9e4066f08beec538e775443c5be79dd423fcabahrens * create a faked up 'missing' vdev as a placeholder. We cannot
fa9e4066f08beec538e775443c5be79dd423fcabahrens * simply compress the child array, because the kernel performs
fa9e4066f08beec538e775443c5be79dd423fcabahrens * certain checks to make sure the vdev IDs match their location
fa9e4066f08beec538e775443c5be79dd423fcabahrens * in the configuration.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (c = 0; c < children; c++)
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (child[c] == NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t *missing;
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_alloc(&missing, NV_UNIQUE_NAME,
99653d4ee642c6528e88224f12409a5f23060994eschrock 0) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_string(missing,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_TYPE,
99653d4ee642c6528e88224f12409a5f23060994eschrock VDEV_TYPE_MISSING) != 0 ||
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_add_uint64(missing,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_ID, c) != 0 ||
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_add_uint64(missing,
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_GUID, 0ULL) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(missing);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens child[c] = missing;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Put all of this pool's top-level vdevs into a root vdev.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_alloc(&nvroot, NV_UNIQUE_NAME, 0) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE,
99653d4ee642c6528e88224f12409a5f23060994eschrock VDEV_TYPE_ROOT) != 0 ||
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) != 0 ||
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, guid) != 0 ||
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
99653d4ee642c6528e88224f12409a5f23060994eschrock child, children) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(nvroot);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (c = 0; c < children; c++)
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(child[c]);
fa9e4066f08beec538e775443c5be79dd423fcabahrens free(child);
99653d4ee642c6528e88224f12409a5f23060994eschrock children = 0;
99653d4ee642c6528e88224f12409a5f23060994eschrock child = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Go through and fix up any paths and/or devids based on our
fa9e4066f08beec538e775443c5be79dd423fcabahrens * known list of vdev GUID -> path mappings.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock if (fix_paths(nvroot, pl->names) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(nvroot);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Add the root vdev to this pool's configuration.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
99653d4ee642c6528e88224f12409a5f23060994eschrock nvroot) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(nvroot);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(nvroot);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Determine if this pool is currently active, in which case we
fa9e4066f08beec538e775443c5be79dd423fcabahrens * can't actually import it.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &name) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &guid) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (pool_active(hdl, name, guid)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock config = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Try to do the import in order to get vdev state.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((err = nvlist_size(config, &len, NV_ENCODE_NATIVE)) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((packed = zfs_alloc(hdl, len)) == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((err = nvlist_pack(config, &packed, &len,
fa9e4066f08beec538e775443c5be79dd423fcabahrens NV_ENCODE_NATIVE, 0)) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
fa9e4066f08beec538e775443c5be79dd423fcabahrens config = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zc.zc_config_src_size = len;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zc.zc_config_src = (uint64_t)(uintptr_t)packed;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens zc.zc_config_dst_size = 2 * len;
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zc.zc_config_dst = (uint64_t)(uintptr_t)
99653d4ee642c6528e88224f12409a5f23060994eschrock zfs_alloc(hdl, zc.zc_config_dst_size)) == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock while ((err = ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_TRYIMPORT,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &zc)) != 0 && errno == ENOMEM) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens free((void *)(uintptr_t)zc.zc_config_dst);
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zc.zc_config_dst = (uint64_t)(uintptr_t)
99653d4ee642c6528e88224f12409a5f23060994eschrock zfs_alloc(hdl, zc.zc_config_dst_size)) == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens free(packed);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (err) {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) zpool_standard_error(hdl, errno,
99653d4ee642c6528e88224f12409a5f23060994eschrock dgettext(TEXT_DOMAIN, "cannot discover pools"));
99653d4ee642c6528e88224f12409a5f23060994eschrock free((void *)(uintptr_t)zc.zc_config_dst);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_unpack((void *)(uintptr_t)zc.zc_config_dst,
99653d4ee642c6528e88224f12409a5f23060994eschrock zc.zc_config_dst_size, &config, 0) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock free((void *)(uintptr_t)zc.zc_config_dst);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock free((void *)(uintptr_t)zc.zc_config_dst);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock /*
99653d4ee642c6528e88224f12409a5f23060994eschrock * Go through and update the paths for spares, now that we have
99653d4ee642c6528e88224f12409a5f23060994eschrock * them.
99653d4ee642c6528e88224f12409a5f23060994eschrock */
99653d4ee642c6528e88224f12409a5f23060994eschrock verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
99653d4ee642c6528e88224f12409a5f23060994eschrock &nvroot) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
99653d4ee642c6528e88224f12409a5f23060994eschrock &spares, &nspares) == 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock for (i = 0; i < nspares; i++) {
99653d4ee642c6528e88224f12409a5f23060994eschrock if (fix_paths(spares[i], pl->names) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if (set_pool_health(config) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Add this pool to the list of configs.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_add_nvlist(ret, name, config) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto nomem;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock config = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ret);
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrocknomem:
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) no_memory(hdl);
99653d4ee642c6528e88224f12409a5f23060994eschrockerror:
99653d4ee642c6528e88224f12409a5f23060994eschrock if (config)
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (ret)
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(ret);
99653d4ee642c6528e88224f12409a5f23060994eschrock for (c = 0; c < children; c++)
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(child[c]);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (child)
99653d4ee642c6528e88224f12409a5f23060994eschrock free(child);
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock return (NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Return the offset of the given label.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic uint64_t
fa9e4066f08beec538e775443c5be79dd423fcabahrenslabel_offset(size_t size, int l)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (l * sizeof (vdev_label_t) + (l < VDEV_LABELS / 2 ?
fa9e4066f08beec538e775443c5be79dd423fcabahrens 0 : size - VDEV_LABELS * sizeof (vdev_label_t)));
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Given a file descriptor, read the label information and return an nvlist
fa9e4066f08beec538e775443c5be79dd423fcabahrens * describing the configuration, if there is one.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrockint
99653d4ee642c6528e88224f12409a5f23060994eschrockzpool_read_label(int fd, nvlist_t **config)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct stat64 statbuf;
fa9e4066f08beec538e775443c5be79dd423fcabahrens int l;
fa9e4066f08beec538e775443c5be79dd423fcabahrens vdev_label_t *label;
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock uint64_t state, txg;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock *config = NULL;
99653d4ee642c6528e88224f12409a5f23060994eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (fstat64(fd, &statbuf) == -1)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((label = malloc(sizeof (vdev_label_t))) == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (l = 0; l < VDEV_LABELS; l++) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (pread(fd, label, sizeof (vdev_label_t),
fa9e4066f08beec538e775443c5be79dd423fcabahrens label_offset(statbuf.st_size, l)) != sizeof (vdev_label_t))
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (nvlist_unpack(label->vl_vdev_phys.vp_nvlist,
99653d4ee642c6528e88224f12409a5f23060994eschrock sizeof (label->vl_vdev_phys.vp_nvlist), config, 0) != 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_lookup_uint64(*config, ZPOOL_CONFIG_POOL_STATE,
99653d4ee642c6528e88224f12409a5f23060994eschrock &state) != 0 || state > POOL_STATE_SPARE) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(*config);
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (state != POOL_STATE_SPARE &&
99653d4ee642c6528e88224f12409a5f23060994eschrock (nvlist_lookup_uint64(*config, ZPOOL_CONFIG_POOL_TXG,
99653d4ee642c6528e88224f12409a5f23060994eschrock &txg) != 0 || txg == 0)) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(*config);
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens free(label);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens free(label);
99653d4ee642c6528e88224f12409a5f23060994eschrock *config = NULL;
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Given a list of directories to search, find all pools stored on disk. This
fa9e4066f08beec538e775443c5be79dd423fcabahrens * includes partial pools which are not available to import. If no args are
fa9e4066f08beec538e775443c5be79dd423fcabahrens * given (argc is 0), then the default directory (/dev/dsk) is searched.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensnvlist_t *
99653d4ee642c6528e88224f12409a5f23060994eschrockzpool_find_import(libzfs_handle_t *hdl, int argc, char **argv)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens int i;
fa9e4066f08beec538e775443c5be79dd423fcabahrens DIR *dirp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct dirent64 *dp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char path[MAXPATHLEN];
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct stat64 statbuf;
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t *ret = NULL, *config;
fa9e4066f08beec538e775443c5be79dd423fcabahrens static char *default_dir = "/dev/dsk";
fa9e4066f08beec538e775443c5be79dd423fcabahrens int fd;
fa9e4066f08beec538e775443c5be79dd423fcabahrens pool_list_t pools = { 0 };
99653d4ee642c6528e88224f12409a5f23060994eschrock pool_entry_t *pe, *penext;
99653d4ee642c6528e88224f12409a5f23060994eschrock vdev_entry_t *ve, *venext;
99653d4ee642c6528e88224f12409a5f23060994eschrock config_entry_t *ce, *cenext;
99653d4ee642c6528e88224f12409a5f23060994eschrock name_entry_t *ne, *nenext;
99653d4ee642c6528e88224f12409a5f23060994eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (argc == 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens argc = 1;
fa9e4066f08beec538e775443c5be79dd423fcabahrens argv = &default_dir;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Go through and read the label configuration information from every
fa9e4066f08beec538e775443c5be79dd423fcabahrens * possible device, organizing the information according to pool GUID
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and toplevel GUID.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (i = 0; i < argc; i++) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (argv[i][0] != '/') {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) zfs_error(hdl, EZFS_BADPATH,
99653d4ee642c6528e88224f12409a5f23060994eschrock dgettext(TEXT_DOMAIN, "cannot open '%s'"),
fa9e4066f08beec538e775443c5be79dd423fcabahrens argv[i]);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((dirp = opendir(argv[i])) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock zfs_error_aux(hdl, strerror(errno));
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) zfs_error(hdl, EZFS_BADPATH,
99653d4ee642c6528e88224f12409a5f23060994eschrock dgettext(TEXT_DOMAIN, "cannot open '%s'"),
99653d4ee642c6528e88224f12409a5f23060994eschrock argv[i]);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * This is not MT-safe, but we have no MT consumers of libzfs
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens while ((dp = readdir64(dirp)) != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) snprintf(path, sizeof (path), "%s/%s",
fa9e4066f08beec538e775443c5be79dd423fcabahrens argv[i], dp->d_name);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (stat64(path, &statbuf) != 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Ignore directories (which includes "." and "..").
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (S_ISDIR(statbuf.st_mode))
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if ((fd = open64(path, O_RDONLY)) < 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zpool_read_label(fd, &config)) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) no_memory(hdl);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) close(fd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (config != NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock if (add_config(hdl, &pools, path, config) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock ret = get_configs(hdl, &pools);
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrockerror:
99653d4ee642c6528e88224f12409a5f23060994eschrock for (pe = pools.pools; pe != NULL; pe = penext) {
99653d4ee642c6528e88224f12409a5f23060994eschrock penext = pe->pe_next;
99653d4ee642c6528e88224f12409a5f23060994eschrock for (ve = pe->pe_vdevs; ve != NULL; ve = venext) {
99653d4ee642c6528e88224f12409a5f23060994eschrock venext = ve->ve_next;
99653d4ee642c6528e88224f12409a5f23060994eschrock for (ce = ve->ve_configs; ce != NULL; ce = cenext) {
99653d4ee642c6528e88224f12409a5f23060994eschrock cenext = ce->ce_next;
99653d4ee642c6528e88224f12409a5f23060994eschrock if (ce->ce_config)
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(ce->ce_config);
99653d4ee642c6528e88224f12409a5f23060994eschrock free(ce);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock free(ve);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock free(pe);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock for (ne = pools.names; ne != NULL; ne = nenext) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nenext = ne->ne_next;
99653d4ee642c6528e88224f12409a5f23060994eschrock if (ne->ne_name)
99653d4ee642c6528e88224f12409a5f23060994eschrock free(ne->ne_name);
99653d4ee642c6528e88224f12409a5f23060994eschrock free(ne);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ret);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrockboolean_t
fa9e4066f08beec538e775443c5be79dd423fcabahrensfind_guid(nvlist_t *nv, uint64_t guid)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t tmp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t **child;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint_t c, children;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(nv, ZPOOL_CONFIG_GUID, &tmp) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (tmp == guid)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (B_TRUE);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &child, &children) == 0) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (c = 0; c < children; c++)
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (find_guid(child[c], guid))
99653d4ee642c6528e88224f12409a5f23060994eschrock return (B_TRUE);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock return (B_FALSE);
99653d4ee642c6528e88224f12409a5f23060994eschrock}
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrocktypedef struct spare_cbdata {
99653d4ee642c6528e88224f12409a5f23060994eschrock uint64_t cb_guid;
99653d4ee642c6528e88224f12409a5f23060994eschrock zpool_handle_t *cb_zhp;
99653d4ee642c6528e88224f12409a5f23060994eschrock} spare_cbdata_t;
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrockstatic int
99653d4ee642c6528e88224f12409a5f23060994eschrockfind_spare(zpool_handle_t *zhp, void *data)
99653d4ee642c6528e88224f12409a5f23060994eschrock{
99653d4ee642c6528e88224f12409a5f23060994eschrock spare_cbdata_t *cbp = data;
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t **spares;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint_t i, nspares;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint64_t guid;
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t *nvroot;
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock verify(nvlist_lookup_nvlist(zhp->zpool_config, ZPOOL_CONFIG_VDEV_TREE,
99653d4ee642c6528e88224f12409a5f23060994eschrock &nvroot) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES,
99653d4ee642c6528e88224f12409a5f23060994eschrock &spares, &nspares) == 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock for (i = 0; i < nspares; i++) {
99653d4ee642c6528e88224f12409a5f23060994eschrock verify(nvlist_lookup_uint64(spares[i],
99653d4ee642c6528e88224f12409a5f23060994eschrock ZPOOL_CONFIG_GUID, &guid) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (guid == cbp->cb_guid) {
99653d4ee642c6528e88224f12409a5f23060994eschrock cbp->cb_zhp = zhp;
99653d4ee642c6528e88224f12409a5f23060994eschrock return (1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock zpool_close(zhp);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
99653d4ee642c6528e88224f12409a5f23060994eschrock * Determines if the pool is in use. If so, it returns true and the state of
fa9e4066f08beec538e775443c5be79dd423fcabahrens * the pool as well as the name of the pool. Both strings are allocated and
fa9e4066f08beec538e775443c5be79dd423fcabahrens * must be freed by the caller.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensint
99653d4ee642c6528e88224f12409a5f23060994eschrockzpool_in_use(libzfs_handle_t *hdl, int fd, pool_state_t *state, char **namestr,
99653d4ee642c6528e88224f12409a5f23060994eschrock boolean_t *inuse)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t *config;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char *name;
99653d4ee642c6528e88224f12409a5f23060994eschrock boolean_t ret;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t guid, vdev_guid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens zpool_handle_t *zhp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t *pool_config;
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock uint64_t stateval;
99653d4ee642c6528e88224f12409a5f23060994eschrock spare_cbdata_t cb = { 0 };
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock *inuse = B_FALSE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (zpool_read_label(fd, &config) != 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) no_memory(hdl);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if (config == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock &stateval) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID,
fa9e4066f08beec538e775443c5be79dd423fcabahrens &vdev_guid) == 0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if (stateval != POOL_STATE_SPARE) {
99653d4ee642c6528e88224f12409a5f23060994eschrock verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
99653d4ee642c6528e88224f12409a5f23060994eschrock &name) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
99653d4ee642c6528e88224f12409a5f23060994eschrock &guid) == 0);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock switch (stateval) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens case POOL_STATE_EXPORTED:
99653d4ee642c6528e88224f12409a5f23060994eschrock ret = B_TRUE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens case POOL_STATE_ACTIVE:
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * For an active pool, we have to determine if it's really part
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock * of a currently active pool (in which case the pool will exist
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock * and the guid will be the same), or whether it's part of an
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock * active pool that was disconnected without being explicitly
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock * exported.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock if (pool_active(hdl, name, guid)) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Because the device may have been removed while
fa9e4066f08beec538e775443c5be79dd423fcabahrens * offlined, we only report it as active if the vdev is
fa9e4066f08beec538e775443c5be79dd423fcabahrens * still present in the config. Otherwise, pretend like
fa9e4066f08beec538e775443c5be79dd423fcabahrens * it's not in use.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zhp = zpool_open_canfail(hdl, name)) != NULL &&
088e9d477eee66081e407fbc5a33c4da25f66f6aeschrock (pool_config = zpool_get_config(zhp, NULL))
088e9d477eee66081e407fbc5a33c4da25f66f6aeschrock != NULL) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_t *nvroot;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens verify(nvlist_lookup_nvlist(pool_config,
fa9e4066f08beec538e775443c5be79dd423fcabahrens ZPOOL_CONFIG_VDEV_TREE, &nvroot) == 0);
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock ret = find_guid(nvroot, vdev_guid);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
99653d4ee642c6528e88224f12409a5f23060994eschrock ret = B_FALSE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if (zhp != NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock zpool_close(zhp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens } else {
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock stateval = POOL_STATE_POTENTIALLY_ACTIVE;
99653d4ee642c6528e88224f12409a5f23060994eschrock ret = B_TRUE;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
99653d4ee642c6528e88224f12409a5f23060994eschrock break;
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock case POOL_STATE_SPARE:
99653d4ee642c6528e88224f12409a5f23060994eschrock /*
99653d4ee642c6528e88224f12409a5f23060994eschrock * For a hot spare, it can be either definitively in use, or
99653d4ee642c6528e88224f12409a5f23060994eschrock * potentially active. To determine if it's in use, we iterate
99653d4ee642c6528e88224f12409a5f23060994eschrock * over all pools in the system and search for one with a spare
99653d4ee642c6528e88224f12409a5f23060994eschrock * with a matching guid.
99653d4ee642c6528e88224f12409a5f23060994eschrock *
99653d4ee642c6528e88224f12409a5f23060994eschrock * Due to the shared nature of spares, we don't actually report
99653d4ee642c6528e88224f12409a5f23060994eschrock * the potentially active case as in use. This means the user
99653d4ee642c6528e88224f12409a5f23060994eschrock * can freely create pools on the hot spares of exported pools,
99653d4ee642c6528e88224f12409a5f23060994eschrock * but to do otherwise makes the resulting code complicated, and
99653d4ee642c6528e88224f12409a5f23060994eschrock * we end up having to deal with this case anyway.
99653d4ee642c6528e88224f12409a5f23060994eschrock */
99653d4ee642c6528e88224f12409a5f23060994eschrock cb.cb_zhp = NULL;
99653d4ee642c6528e88224f12409a5f23060994eschrock cb.cb_guid = vdev_guid;
99653d4ee642c6528e88224f12409a5f23060994eschrock if (zpool_iter(hdl, find_spare, &cb) == 1) {
99653d4ee642c6528e88224f12409a5f23060994eschrock name = (char *)zpool_get_name(cb.cb_zhp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens ret = TRUE;
99653d4ee642c6528e88224f12409a5f23060994eschrock } else {
99653d4ee642c6528e88224f12409a5f23060994eschrock ret = FALSE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens break;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens default:
99653d4ee642c6528e88224f12409a5f23060994eschrock ret = B_FALSE;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock if (ret) {
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((*namestr = zfs_strdup(hdl, name)) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
99653d4ee642c6528e88224f12409a5f23060994eschrock }
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock *state = (pool_state_t)stateval;
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock }
46a2abf27af40eda17a3f97e79eda1aef4e3c3c8eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock if (cb.cb_zhp)
99653d4ee642c6528e88224f12409a5f23060994eschrock zpool_close(cb.cb_zhp);
99653d4ee642c6528e88224f12409a5f23060994eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock *inuse = ret;
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}