libzfs_import.c revision c5904d138f3bdf0762dbf452a43d5a5c387ea6a8
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/*
3a57275a335306e90136ebd00a4689fe0ee72519ck * Copyright 2008 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 /*
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan * If this is a hot spare not currently in use or level 2 cache
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan * device, add it to the list of names to translate, but don't do
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan * anything else.
99653d4ee642c6528e88224f12409a5f23060994eschrock */
99653d4ee642c6528e88224f12409a5f23060994eschrock if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan &state) == 0 &&
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan (state == POOL_STATE_SPARE || state == POOL_STATE_L2CACHE) &&
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, &vdev_guid) == 0) {
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((ne = zfs_alloc(hdl, sizeof (name_entry_t))) == NULL)
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock 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 */
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrockstatic int
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrockpool_active(libzfs_handle_t *hdl, const char *name, uint64_t guid,
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock boolean_t *isactive)
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock{
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock zpool_handle_t *zhp;
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock uint64_t theguid;
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock if (zpool_open_silent(hdl, name, &zhp) != 0)
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock return (-1);
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock if (zhp == NULL) {
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock *isactive = B_FALSE;
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock return (0);
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock }
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock verify(nvlist_lookup_uint64(zhp->zpool_config, ZPOOL_CONFIG_POOL_GUID,
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock &theguid) == 0);
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock zpool_close(zhp);
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock *isactive = (theguid == guid);
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock return (0);
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock}
eaca9bbd5f5d1e4e554da4c7108e8a03c8c33481eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrockstatic nvlist_t *
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrockrefresh_config(libzfs_handle_t *hdl, nvlist_t *config)
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock{
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvlist_t *nvl;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zfs_cmd_t zc = { 0 };
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock int err;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (zcmd_write_conf_nvlist(hdl, &zc, config) != 0)
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (zcmd_alloc_dst_nvlist(hdl, &zc,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zc.zc_nvlist_conf_size * 2) != 0) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zcmd_free_nvlists(&zc);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock while ((err = ioctl(hdl->libzfs_fd, ZFS_IOC_POOL_TRYIMPORT,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock &zc)) != 0 && errno == ENOMEM) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zcmd_free_nvlists(&zc);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (err) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) zpool_standard_error(hdl, errno,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock dgettext(TEXT_DOMAIN, "cannot discover pools"));
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zcmd_free_nvlists(&zc);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (zcmd_read_dst_nvlist(hdl, &zc, &nvl) != 0) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zcmd_free_nvlists(&zc);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zcmd_free_nvlists(&zc);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (nvl);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock}
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
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 *
3a57275a335306e90136ebd00a4689fe0ee72519ckget_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok)
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;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan nvlist_t **spares, **l2cache;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan uint_t i, nspares, nl2cache;
99653d4ee642c6528e88224f12409a5f23060994eschrock boolean_t config_seen;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t best_txg;
95173954d2b811ceb583a9012c3b16e1d0dd6438ek char *name, *hostname;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint64_t version, guid;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint_t children = 0;
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_t **child = NULL;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint_t c;
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock boolean_t isactive;
95173954d2b811ceb583a9012c3b16e1d0dd6438ek uint64_t hostid;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvlist_t *nvl;
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
95173954d2b811ceb583a9012c3b16e1d0dd6438ek * hostid (if available)
95173954d2b811ceb583a9012c3b16e1d0dd6438ek * hostname (if available)
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;
95173954d2b811ceb583a9012c3b16e1d0dd6438ek hostid = 0;
95173954d2b811ceb583a9012c3b16e1d0dd6438ek if (nvlist_lookup_uint64(tmp,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek ZPOOL_CONFIG_HOSTID, &hostid) == 0) {
95173954d2b811ceb583a9012c3b16e1d0dd6438ek if (nvlist_add_uint64(config,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek ZPOOL_CONFIG_HOSTID, hostid) != 0)
95173954d2b811ceb583a9012c3b16e1d0dd6438ek goto nomem;
95173954d2b811ceb583a9012c3b16e1d0dd6438ek verify(nvlist_lookup_string(tmp,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek ZPOOL_CONFIG_HOSTNAME,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek &hostname) == 0);
95173954d2b811ceb583a9012c3b16e1d0dd6438ek if (nvlist_add_string(config,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek ZPOOL_CONFIG_HOSTNAME,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek hostname) != 0)
95173954d2b811ceb583a9012c3b16e1d0dd6438ek goto nomem;
95173954d2b811ceb583a9012c3b16e1d0dd6438ek }
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
3a57275a335306e90136ebd00a4689fe0ee72519ck /*
3a57275a335306e90136ebd00a4689fe0ee72519ck * zdb uses this path to report on active pools that were
3a57275a335306e90136ebd00a4689fe0ee72519ck * imported or created using -R.
3a57275a335306e90136ebd00a4689fe0ee72519ck */
3a57275a335306e90136ebd00a4689fe0ee72519ck if (active_ok)
3a57275a335306e90136ebd00a4689fe0ee72519ck goto add_pool;
3a57275a335306e90136ebd00a4689fe0ee72519ck
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
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock if (pool_active(hdl, name, guid, &isactive) != 0)
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock goto error;
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock
0192a2782d86db43dfd071aa5d97f13a63c14951eschrock if (isactive) {
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
99653d4ee642c6528e88224f12409a5f23060994eschrock config = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if ((nvl = refresh_config(hdl, config)) == NULL)
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock goto error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens nvlist_free(config);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock config = nvl;
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
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan /*
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan * Update the paths for l2cache devices.
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan */
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE,
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan &l2cache, &nl2cache) == 0) {
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan for (i = 0; i < nl2cache; i++) {
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan if (fix_paths(l2cache[i], pl->names) != 0)
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan goto nomem;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan }
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan }
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan
95173954d2b811ceb583a9012c3b16e1d0dd6438ek /*
95173954d2b811ceb583a9012c3b16e1d0dd6438ek * Restore the original information read from the actual label.
95173954d2b811ceb583a9012c3b16e1d0dd6438ek */
95173954d2b811ceb583a9012c3b16e1d0dd6438ek (void) nvlist_remove(config, ZPOOL_CONFIG_HOSTID,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek DATA_TYPE_UINT64);
95173954d2b811ceb583a9012c3b16e1d0dd6438ek (void) nvlist_remove(config, ZPOOL_CONFIG_HOSTNAME,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek DATA_TYPE_STRING);
95173954d2b811ceb583a9012c3b16e1d0dd6438ek if (hostid != 0) {
95173954d2b811ceb583a9012c3b16e1d0dd6438ek verify(nvlist_add_uint64(config, ZPOOL_CONFIG_HOSTID,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek hostid) == 0);
95173954d2b811ceb583a9012c3b16e1d0dd6438ek verify(nvlist_add_string(config, ZPOOL_CONFIG_HOSTNAME,
95173954d2b811ceb583a9012c3b16e1d0dd6438ek hostname) == 0);
95173954d2b811ceb583a9012c3b16e1d0dd6438ek }
95173954d2b811ceb583a9012c3b16e1d0dd6438ek
3a57275a335306e90136ebd00a4689fe0ee72519ckadd_pool:
fa9e4066f08beec538e775443c5be79dd423fcabahrens /*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Add this pool to the list of configs.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock verify(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
e9dbad6f263d5570ed7ff5443ec5b958af8c24d7eschrock &name) == 0);
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:
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock nvlist_free(config);
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock nvlist_free(ret);
99653d4ee642c6528e88224f12409a5f23060994eschrock for (c = 0; c < children; c++)
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(child[c]);
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock free(child);
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrock return (NULL);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Return the offset of the given label.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstatic uint64_t
e7437265dc2a4920c197ed4337665539d358b22cahrenslabel_offset(uint64_t size, int l)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
e7437265dc2a4920c197ed4337665539d358b22cahrens ASSERT(P2PHASE_TYPED(size, sizeof (vdev_label_t), uint64_t) == 0);
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;
e7437265dc2a4920c197ed4337665539d358b22cahrens uint64_t state, txg, size;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock *config = NULL;
99653d4ee642c6528e88224f12409a5f23060994eschrock
fa9e4066f08beec538e775443c5be79dd423fcabahrens if (fstat64(fd, &statbuf) == -1)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (0);
e7437265dc2a4920c197ed4337665539d358b22cahrens size = P2ALIGN_TYPED(statbuf.st_size, sizeof (vdev_label_t), uint64_t);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((label = malloc(sizeof (vdev_label_t))) == NULL)
99653d4ee642c6528e88224f12409a5f23060994eschrock return (-1);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens for (l = 0; l < VDEV_LABELS; l++) {
c5904d138f3bdf0762dbf452a43d5a5c387ea6a8eschrock if (pread64(fd, label, sizeof (vdev_label_t),
e7437265dc2a4920c197ed4337665539d358b22cahrens label_offset(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,
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan &state) != 0 || state > POOL_STATE_L2CACHE) {
99653d4ee642c6528e88224f12409a5f23060994eschrock nvlist_free(*config);
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan if (state != POOL_STATE_SPARE && state != POOL_STATE_L2CACHE &&
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 *
3a57275a335306e90136ebd00a4689fe0ee72519ckzpool_find_import(libzfs_handle_t *hdl, int argc, char **argv,
3a57275a335306e90136ebd00a4689fe0ee72519ck boolean_t active_ok)
fa9e4066f08beec538e775443c5be79dd423fcabahrens{
fa9e4066f08beec538e775443c5be79dd423fcabahrens int i;
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock DIR *dirp = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens struct dirent64 *dp;
fa9e4066f08beec538e775443c5be79dd423fcabahrens char path[MAXPATHLEN];
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams char *end;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams size_t pathleft;
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 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++) {
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams char *rdsk;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams int dfd;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams /* use realpath to normalize the path */
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams if (realpath(argv[i], path) == 0) {
ece3d9b3bacef51a5f34d993935eedbb7bb87059lling (void) zfs_error_fmt(hdl, EZFS_BADPATH,
99653d4ee642c6528e88224f12409a5f23060994eschrock dgettext(TEXT_DOMAIN, "cannot open '%s'"),
fa9e4066f08beec538e775443c5be79dd423fcabahrens argv[i]);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams end = &path[strlen(path)];
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams *end++ = '/';
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams *end = 0;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams pathleft = &path[sizeof (path)] - end;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams /*
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams * Using raw devices instead of block devices when we're
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams * reading the labels skips a bunch of slow operations during
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams * close(2) processing, so we replace /dev/dsk with /dev/rdsk.
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams */
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams if (strcmp(path, "/dev/dsk/") == 0)
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams rdsk = "/dev/rdsk/";
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams else
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams rdsk = path;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams if ((dfd = open64(rdsk, O_RDONLY)) < 0 ||
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams (dirp = fdopendir(dfd)) == NULL) {
99653d4ee642c6528e88224f12409a5f23060994eschrock zfs_error_aux(hdl, strerror(errno));
ece3d9b3bacef51a5f34d993935eedbb7bb87059lling (void) zfs_error_fmt(hdl, EZFS_BADPATH,
99653d4ee642c6528e88224f12409a5f23060994eschrock dgettext(TEXT_DOMAIN, "cannot open '%s'"),
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams rdsk);
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) {
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams const char *name = dp->d_name;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams if (name[0] == '.' &&
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams (name[1] == 0 || (name[1] == '.' && name[2] == 0)))
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams if ((fd = openat64(dfd, name, O_RDONLY)) < 0)
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
3bb79bece53191f2cf27aa61a72ea1784a7ce700eschrock
3bb79bece53191f2cf27aa61a72ea1784a7ce700eschrock /*
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams * Ignore failed stats. We only want regular
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams * files, character devs and block devs.
3bb79bece53191f2cf27aa61a72ea1784a7ce700eschrock */
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams if (fstat64(fd, &statbuf) != 0 ||
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams (!S_ISREG(statbuf.st_mode) &&
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams !S_ISCHR(statbuf.st_mode) &&
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams !S_ISBLK(statbuf.st_mode))) {
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams (void) close(fd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens continue;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrock if ((zpool_read_label(fd, &config)) != 0) {
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock (void) close(fd);
99653d4ee642c6528e88224f12409a5f23060994eschrock (void) no_memory(hdl);
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
99653d4ee642c6528e88224f12409a5f23060994eschrock }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens (void) close(fd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams if (config != NULL) {
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams /* use the non-raw path for the config */
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams (void) strlcpy(end, name, pathleft);
99653d4ee642c6528e88224f12409a5f23060994eschrock if (add_config(hdl, &pools, path, config) != 0)
99653d4ee642c6528e88224f12409a5f23060994eschrock goto error;
842c5645dc246ff7fd786d8a6f56644d79705e18jwadams }
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock (void) closedir(dirp);
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock dirp = NULL;
fa9e4066f08beec538e775443c5be79dd423fcabahrens }
fa9e4066f08beec538e775443c5be79dd423fcabahrens
3a57275a335306e90136ebd00a4689fe0ee72519ck ret = get_configs(hdl, &pools, active_ok);
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
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock if (dirp)
ccae0b50330edda9b094cee1ec6a0ad35443e8b0eschrock (void) closedir(dirp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens return (ret);
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock/*
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock * Given a cache file, return the contents as a list of importable pools.
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock */
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrocknvlist_t *
3a57275a335306e90136ebd00a4689fe0ee72519ckzpool_find_import_cached(libzfs_handle_t *hdl, const char *cachefile,
3a57275a335306e90136ebd00a4689fe0ee72519ck boolean_t active_ok)
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock{
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock char *buf;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock int fd;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock struct stat64 statbuf;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvlist_t *raw, *src, *dst;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvlist_t *pools;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvpair_t *elem;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock char *name;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock uint64_t guid;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock boolean_t active;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if ((fd = open(cachefile, O_RDONLY)) < 0) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zfs_error_aux(hdl, "%s", strerror(errno));
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) zfs_error(hdl, EZFS_BADCACHE,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock dgettext(TEXT_DOMAIN, "failed to open cache file"));
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (fstat64(fd, &statbuf) != 0) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock zfs_error_aux(hdl, "%s", strerror(errno));
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) close(fd);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) zfs_error(hdl, EZFS_BADCACHE,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock dgettext(TEXT_DOMAIN, "failed to get size of cache file"));
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if ((buf = zfs_alloc(hdl, statbuf.st_size)) == NULL) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) close(fd);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) close(fd);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock free(buf);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) zfs_error(hdl, EZFS_BADCACHE,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock dgettext(TEXT_DOMAIN,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock "failed to read cache file contents"));
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) close(fd);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (nvlist_unpack(buf, statbuf.st_size, &raw, 0) != 0) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock free(buf);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) zfs_error(hdl, EZFS_BADCACHE,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock dgettext(TEXT_DOMAIN,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock "invalid or corrupt cache file contents"));
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock free(buf);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock /*
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock * Go through and get the current state of the pools and refresh their
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock * state.
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock */
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock if (nvlist_alloc(&pools, 0, 0) != 0) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock (void) no_memory(hdl);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvlist_free(raw);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (NULL);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock elem = NULL;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock while ((elem = nvlist_next_nvpair(raw, elem)) != NULL) {
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock verify(nvpair_value_nvlist(elem, &src) == 0);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock verify(nvlist_lookup_string(src, ZPOOL_CONFIG_POOL_NAME,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock &name) == 0);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock verify(nvlist_lookup_uint64(src, ZPOOL_CONFIG_POOL_GUID,
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock &guid) == 0);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
3a57275a335306e90136ebd00a4689fe0ee72519ck if (!active_ok) {
3a57275a335306e90136ebd00a4689fe0ee72519ck if (pool_active(hdl, name, guid, &active) != 0) {
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(raw);
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(pools);
3a57275a335306e90136ebd00a4689fe0ee72519ck return (NULL);
3a57275a335306e90136ebd00a4689fe0ee72519ck }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
3a57275a335306e90136ebd00a4689fe0ee72519ck if (active)
3a57275a335306e90136ebd00a4689fe0ee72519ck continue;
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
3a57275a335306e90136ebd00a4689fe0ee72519ck if ((dst = refresh_config(hdl, src)) == NULL) {
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(raw);
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(pools);
3a57275a335306e90136ebd00a4689fe0ee72519ck return (NULL);
3a57275a335306e90136ebd00a4689fe0ee72519ck }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
3a57275a335306e90136ebd00a4689fe0ee72519ck if (nvlist_add_nvlist(pools, nvpair_name(elem), dst)
3a57275a335306e90136ebd00a4689fe0ee72519ck != 0) {
3a57275a335306e90136ebd00a4689fe0ee72519ck (void) no_memory(hdl);
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(dst);
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(raw);
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(pools);
3a57275a335306e90136ebd00a4689fe0ee72519ck return (NULL);
3a57275a335306e90136ebd00a4689fe0ee72519ck }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvlist_free(dst);
3a57275a335306e90136ebd00a4689fe0ee72519ck } else {
3a57275a335306e90136ebd00a4689fe0ee72519ck if (nvlist_add_nvlist(pools, nvpair_name(elem), src)
3a57275a335306e90136ebd00a4689fe0ee72519ck != 0) {
3a57275a335306e90136ebd00a4689fe0ee72519ck (void) no_memory(hdl);
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(raw);
3a57275a335306e90136ebd00a4689fe0ee72519ck nvlist_free(pools);
3a57275a335306e90136ebd00a4689fe0ee72519ck return (NULL);
3a57275a335306e90136ebd00a4689fe0ee72519ck }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock }
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock nvlist_free(raw);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock return (pools);
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock}
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
2f8aaab38e6371ad39ed90a1211ba8921acbb4d5eschrock
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
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendantypedef struct aux_cbdata {
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan const char *cb_type;
99653d4ee642c6528e88224f12409a5f23060994eschrock uint64_t cb_guid;
99653d4ee642c6528e88224f12409a5f23060994eschrock zpool_handle_t *cb_zhp;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan} aux_cbdata_t;
99653d4ee642c6528e88224f12409a5f23060994eschrock
99653d4ee642c6528e88224f12409a5f23060994eschrockstatic int
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendanfind_aux(zpool_handle_t *zhp, void *data)
99653d4ee642c6528e88224f12409a5f23060994eschrock{
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan aux_cbdata_t *cbp = data;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan nvlist_t **list;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan uint_t i, count;
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
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan if (nvlist_lookup_nvlist_array(nvroot, cbp->cb_type,
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan &list, &count) == 0) {
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan for (i = 0; i < count; i++) {
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan verify(nvlist_lookup_uint64(list[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;
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock uint64_t stateval, isspare;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan aux_cbdata_t cb = { 0 };
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock boolean_t isactive;
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
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan if (stateval != POOL_STATE_SPARE && stateval != POOL_STATE_L2CACHE) {
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 */
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock if (pool_active(hdl, name, guid, &isactive) != 0) {
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock nvlist_free(config);
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock return (-1);
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock }
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock
94de1d4cf6ec0a3bf040dcc4b8df107c4ed36b51eschrock if (isactive) {
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
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock /*
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock * If this is an active spare within another pool, we
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock * treat it like an unused hot spare. This allows the
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock * user to create a pool with a hot spare that currently
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock * in use within another pool. Since we return B_TRUE,
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock * libdiskmgt will continue to prevent generic consumers
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock * from using the device.
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock if (ret && nvlist_lookup_uint64(config,
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock ZPOOL_CONFIG_IS_SPARE, &isspare) == 0 && isspare)
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock stateval = POOL_STATE_SPARE;
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock
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;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan cb.cb_type = ZPOOL_CONFIG_SPARES;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan if (zpool_iter(hdl, find_aux, &cb) == 1) {
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan name = (char *)zpool_get_name(cb.cb_zhp);
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan ret = TRUE;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan } else {
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan ret = FALSE;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan }
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan break;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan case POOL_STATE_L2CACHE:
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan /*
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan * Check if any pool is currently using this l2cache device.
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan */
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan cb.cb_zhp = NULL;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan cb.cb_guid = vdev_guid;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan cb.cb_type = ZPOOL_CONFIG_L2CACHE;
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan if (zpool_iter(hdl, find_aux, &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) {
c6765aab6b83692cd10f1dcf73ce15203a5befa7eschrock if (cb.cb_zhp)
c6765aab6b83692cd10f1dcf73ce15203a5befa7eschrock zpool_close(cb.cb_zhp);
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}