| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| |
| /* |
| * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2012 by Delphix. All rights reserved. |
| * Copyright (c) 2013 Steven Hartland. All rights reserved. |
| */ |
| |
| /* |
| * This file contains the functions which analyze the status of a pool. This |
| * include both the status of an active pool, as well as the status exported |
| * pools. Returns one of the ZPOOL_STATUS_* defines describing the status of |
| * the pool. This status is independent (to a certain degree) from the state of |
| * the pool. A pool's state describes only whether or not it is capable of |
| * providing the necessary fault tolerance for data. The status describes the |
| * overall status of devices. A pool that is online can still have a device |
| * that is experiencing errors. |
| * |
| * Only a subset of the possible faults can be detected using 'zpool status', |
| * and not all possible errors correspond to a FMA message ID. The explanation |
| * is left up to the caller, depending on whether it is a live pool or an |
| * import. |
| */ |
| |
| #include <libzfs.h> |
| #include <libzutil.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <sys/systeminfo.h> |
| #include "libzfs_impl.h" |
| #include "zfeature_common.h" |
| |
| /* |
| * Message ID table. This must be kept in sync with the ZPOOL_STATUS_* defines |
| * in include/libzfs.h. Note that there are some status results which go past |
| * the end of this table, and hence have no associated message ID. |
| */ |
| static char *zfs_msgid_table[] = { |
| "ZFS-8000-14", /* ZPOOL_STATUS_CORRUPT_CACHE */ |
| "ZFS-8000-2Q", /* ZPOOL_STATUS_MISSING_DEV_R */ |
| "ZFS-8000-3C", /* ZPOOL_STATUS_MISSING_DEV_NR */ |
| "ZFS-8000-4J", /* ZPOOL_STATUS_CORRUPT_LABEL_R */ |
| "ZFS-8000-5E", /* ZPOOL_STATUS_CORRUPT_LABEL_NR */ |
| "ZFS-8000-6X", /* ZPOOL_STATUS_BAD_GUID_SUM */ |
| "ZFS-8000-72", /* ZPOOL_STATUS_CORRUPT_POOL */ |
| "ZFS-8000-8A", /* ZPOOL_STATUS_CORRUPT_DATA */ |
| "ZFS-8000-9P", /* ZPOOL_STATUS_FAILING_DEV */ |
| "ZFS-8000-A5", /* ZPOOL_STATUS_VERSION_NEWER */ |
| "ZFS-8000-EY", /* ZPOOL_STATUS_HOSTID_MISMATCH */ |
| "ZFS-8000-EY", /* ZPOOL_STATUS_HOSTID_ACTIVE */ |
| "ZFS-8000-EY", /* ZPOOL_STATUS_HOSTID_REQUIRED */ |
| "ZFS-8000-HC", /* ZPOOL_STATUS_IO_FAILURE_WAIT */ |
| "ZFS-8000-JQ", /* ZPOOL_STATUS_IO_FAILURE_CONTINUE */ |
| "ZFS-8000-MM", /* ZPOOL_STATUS_IO_FAILURE_MMP */ |
| "ZFS-8000-K4", /* ZPOOL_STATUS_BAD_LOG */ |
| "ZFS-8000-ER", /* ZPOOL_STATUS_ERRATA */ |
| /* |
| * The following results have no message ID. |
| * ZPOOL_STATUS_UNSUP_FEAT_READ |
| * ZPOOL_STATUS_UNSUP_FEAT_WRITE |
| * ZPOOL_STATUS_FAULTED_DEV_R |
| * ZPOOL_STATUS_FAULTED_DEV_NR |
| * ZPOOL_STATUS_VERSION_OLDER |
| * ZPOOL_STATUS_FEAT_DISABLED |
| * ZPOOL_STATUS_RESILVERING |
| * ZPOOL_STATUS_OFFLINE_DEV |
| * ZPOOL_STATUS_REMOVED_DEV |
| * ZPOOL_STATUS_OK |
| */ |
| }; |
| |
| #define NMSGID (sizeof (zfs_msgid_table) / sizeof (zfs_msgid_table[0])) |
| |
| /* ARGSUSED */ |
| static int |
| vdev_missing(uint64_t state, uint64_t aux, uint64_t errs) |
| { |
| return (state == VDEV_STATE_CANT_OPEN && |
| aux == VDEV_AUX_OPEN_FAILED); |
| } |
| |
| /* ARGSUSED */ |
| static int |
| vdev_faulted(uint64_t state, uint64_t aux, uint64_t errs) |
| { |
| return (state == VDEV_STATE_FAULTED); |
| } |
| |
| /* ARGSUSED */ |
| static int |
| vdev_errors(uint64_t state, uint64_t aux, uint64_t errs) |
| { |
| return (state == VDEV_STATE_DEGRADED || errs != 0); |
| } |
| |
| /* ARGSUSED */ |
| static int |
| vdev_broken(uint64_t state, uint64_t aux, uint64_t errs) |
| { |
| return (state == VDEV_STATE_CANT_OPEN); |
| } |
| |
| /* ARGSUSED */ |
| static int |
| vdev_offlined(uint64_t state, uint64_t aux, uint64_t errs) |
| { |
| return (state == VDEV_STATE_OFFLINE); |
| } |
| |
| /* ARGSUSED */ |
| static int |
| vdev_removed(uint64_t state, uint64_t aux, uint64_t errs) |
| { |
| return (state == VDEV_STATE_REMOVED); |
| } |
| |
| /* |
| * Detect if any leaf devices that have seen errors or could not be opened. |
| */ |
| static boolean_t |
| find_vdev_problem(nvlist_t *vdev, int (*func)(uint64_t, uint64_t, uint64_t)) |
| { |
| nvlist_t **child; |
| vdev_stat_t *vs; |
| uint_t c, children; |
| char *type; |
| |
| /* |
| * Ignore problems within a 'replacing' vdev, since we're presumably in |
| * the process of repairing any such errors, and don't want to call them |
| * out again. We'll pick up the fact that a resilver is happening |
| * later. |
| */ |
| verify(nvlist_lookup_string(vdev, ZPOOL_CONFIG_TYPE, &type) == 0); |
| if (strcmp(type, VDEV_TYPE_REPLACING) == 0) |
| return (B_FALSE); |
| |
| if (nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_CHILDREN, &child, |
| &children) == 0) { |
| for (c = 0; c < children; c++) |
| if (find_vdev_problem(child[c], func)) |
| return (B_TRUE); |
| } else { |
| verify(nvlist_lookup_uint64_array(vdev, ZPOOL_CONFIG_VDEV_STATS, |
| (uint64_t **)&vs, &c) == 0); |
| |
| if (func(vs->vs_state, vs->vs_aux, |
| vs->vs_read_errors + |
| vs->vs_write_errors + |
| vs->vs_checksum_errors)) |
| return (B_TRUE); |
| } |
| |
| /* |
| * Check any L2 cache devs |
| */ |
| if (nvlist_lookup_nvlist_array(vdev, ZPOOL_CONFIG_L2CACHE, &child, |
| &children) == 0) { |
| for (c = 0; c < children; c++) |
| if (find_vdev_problem(child[c], func)) |
| return (B_TRUE); |
| } |
| |
| return (B_FALSE); |
| } |
| |
| /* |
| * Active pool health status. |
| * |
| * To determine the status for a pool, we make several passes over the config, |
| * picking the most egregious error we find. In order of importance, we do the |
| * following: |
| * |
| * - Check for a complete and valid configuration |
| * - Look for any faulted or missing devices in a non-replicated config |
| * - Check for any data errors |
| * - Check for any faulted or missing devices in a replicated config |
| * - Look for any devices showing errors |
| * - Check for any resilvering devices |
| * |
| * There can obviously be multiple errors within a single pool, so this routine |
| * only picks the most damaging of all the current errors to report. |
| */ |
| static zpool_status_t |
| check_status(nvlist_t *config, boolean_t isimport, zpool_errata_t *erratap) |
| { |
| nvlist_t *nvroot; |
| vdev_stat_t *vs; |
| pool_scan_stat_t *ps = NULL; |
| uint_t vsc, psc; |
| uint64_t nerr; |
| uint64_t version; |
| uint64_t stateval; |
| uint64_t suspended; |
| uint64_t hostid = 0; |
| uint64_t errata = 0; |
| unsigned long system_hostid = get_system_hostid(); |
| |
| verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, |
| &version) == 0); |
| verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, |
| &nvroot) == 0); |
| verify(nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_VDEV_STATS, |
| (uint64_t **)&vs, &vsc) == 0); |
| verify(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE, |
| &stateval) == 0); |
| |
| /* |
| * Currently resilvering a vdev |
| */ |
| (void) nvlist_lookup_uint64_array(nvroot, ZPOOL_CONFIG_SCAN_STATS, |
| (uint64_t **)&ps, &psc); |
| if (ps != NULL && ps->pss_func == POOL_SCAN_RESILVER && |
| ps->pss_state == DSS_SCANNING) |
| return (ZPOOL_STATUS_RESILVERING); |
| |
| /* |
| * The multihost property is set and the pool may be active. |
| */ |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| vs->vs_aux == VDEV_AUX_ACTIVE) { |
| mmp_state_t mmp_state; |
| nvlist_t *nvinfo; |
| |
| nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO); |
| mmp_state = fnvlist_lookup_uint64(nvinfo, |
| ZPOOL_CONFIG_MMP_STATE); |
| |
| if (mmp_state == MMP_STATE_ACTIVE) |
| return (ZPOOL_STATUS_HOSTID_ACTIVE); |
| else if (mmp_state == MMP_STATE_NO_HOSTID) |
| return (ZPOOL_STATUS_HOSTID_REQUIRED); |
| else |
| return (ZPOOL_STATUS_HOSTID_MISMATCH); |
| } |
| |
| /* |
| * Pool last accessed by another system. |
| */ |
| (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID, &hostid); |
| if (hostid != 0 && (unsigned long)hostid != system_hostid && |
| stateval == POOL_STATE_ACTIVE) |
| return (ZPOOL_STATUS_HOSTID_MISMATCH); |
| |
| /* |
| * Newer on-disk version. |
| */ |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| vs->vs_aux == VDEV_AUX_VERSION_NEWER) |
| return (ZPOOL_STATUS_VERSION_NEWER); |
| |
| /* |
| * Unsupported feature(s). |
| */ |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| vs->vs_aux == VDEV_AUX_UNSUP_FEAT) { |
| nvlist_t *nvinfo; |
| |
| verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO, |
| &nvinfo) == 0); |
| if (nvlist_exists(nvinfo, ZPOOL_CONFIG_CAN_RDONLY)) |
| return (ZPOOL_STATUS_UNSUP_FEAT_WRITE); |
| return (ZPOOL_STATUS_UNSUP_FEAT_READ); |
| } |
| |
| /* |
| * Check that the config is complete. |
| */ |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| vs->vs_aux == VDEV_AUX_BAD_GUID_SUM) |
| return (ZPOOL_STATUS_BAD_GUID_SUM); |
| |
| /* |
| * Check whether the pool has suspended. |
| */ |
| if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_SUSPENDED, |
| &suspended) == 0) { |
| uint64_t reason; |
| |
| if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_SUSPENDED_REASON, |
| &reason) == 0 && reason == ZIO_SUSPEND_MMP) |
| return (ZPOOL_STATUS_IO_FAILURE_MMP); |
| |
| if (suspended == ZIO_FAILURE_MODE_CONTINUE) |
| return (ZPOOL_STATUS_IO_FAILURE_CONTINUE); |
| return (ZPOOL_STATUS_IO_FAILURE_WAIT); |
| } |
| |
| /* |
| * Could not read a log. |
| */ |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| vs->vs_aux == VDEV_AUX_BAD_LOG) { |
| return (ZPOOL_STATUS_BAD_LOG); |
| } |
| |
| /* |
| * Bad devices in non-replicated config. |
| */ |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| find_vdev_problem(nvroot, vdev_faulted)) |
| return (ZPOOL_STATUS_FAULTED_DEV_NR); |
| |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| find_vdev_problem(nvroot, vdev_missing)) |
| return (ZPOOL_STATUS_MISSING_DEV_NR); |
| |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| find_vdev_problem(nvroot, vdev_broken)) |
| return (ZPOOL_STATUS_CORRUPT_LABEL_NR); |
| |
| /* |
| * Corrupted pool metadata |
| */ |
| if (vs->vs_state == VDEV_STATE_CANT_OPEN && |
| vs->vs_aux == VDEV_AUX_CORRUPT_DATA) |
| return (ZPOOL_STATUS_CORRUPT_POOL); |
| |
| /* |
| * Persistent data errors. |
| */ |
| if (!isimport) { |
| if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_ERRCOUNT, |
| &nerr) == 0 && nerr != 0) |
| return (ZPOOL_STATUS_CORRUPT_DATA); |
| } |
| |
| /* |
| * Missing devices in a replicated config. |
| */ |
| if (find_vdev_problem(nvroot, vdev_faulted)) |
| return (ZPOOL_STATUS_FAULTED_DEV_R); |
| if (find_vdev_problem(nvroot, vdev_missing)) |
| return (ZPOOL_STATUS_MISSING_DEV_R); |
| if (find_vdev_problem(nvroot, vdev_broken)) |
| return (ZPOOL_STATUS_CORRUPT_LABEL_R); |
| |
| /* |
| * Devices with errors |
| */ |
| if (!isimport && find_vdev_problem(nvroot, vdev_errors)) |
| return (ZPOOL_STATUS_FAILING_DEV); |
| |
| /* |
| * Offlined devices |
| */ |
| if (find_vdev_problem(nvroot, vdev_offlined)) |
| return (ZPOOL_STATUS_OFFLINE_DEV); |
| |
| /* |
| * Removed device |
| */ |
| if (find_vdev_problem(nvroot, vdev_removed)) |
| return (ZPOOL_STATUS_REMOVED_DEV); |
| |
| /* |
| * Informational errata available. |
| */ |
| (void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_ERRATA, &errata); |
| if (errata) { |
| *erratap = errata; |
| return (ZPOOL_STATUS_ERRATA); |
| } |
| |
| /* |
| * Outdated, but usable, version |
| */ |
| if (SPA_VERSION_IS_SUPPORTED(version) && version != SPA_VERSION) |
| return (ZPOOL_STATUS_VERSION_OLDER); |
| |
| /* |
| * Usable pool with disabled features |
| */ |
| if (version >= SPA_VERSION_FEATURES) { |
| int i; |
| nvlist_t *feat; |
| |
| if (isimport) { |
| feat = fnvlist_lookup_nvlist(config, |
| ZPOOL_CONFIG_LOAD_INFO); |
| if (nvlist_exists(feat, ZPOOL_CONFIG_ENABLED_FEAT)) |
| feat = fnvlist_lookup_nvlist(feat, |
| ZPOOL_CONFIG_ENABLED_FEAT); |
| } else { |
| feat = fnvlist_lookup_nvlist(config, |
| ZPOOL_CONFIG_FEATURE_STATS); |
| } |
| |
| for (i = 0; i < SPA_FEATURES; i++) { |
| zfeature_info_t *fi = &spa_feature_table[i]; |
| if (!nvlist_exists(feat, fi->fi_guid)) |
| return (ZPOOL_STATUS_FEAT_DISABLED); |
| } |
| } |
| |
| return (ZPOOL_STATUS_OK); |
| } |
| |
| zpool_status_t |
| zpool_get_status(zpool_handle_t *zhp, char **msgid, zpool_errata_t *errata) |
| { |
| zpool_status_t ret = check_status(zhp->zpool_config, B_FALSE, errata); |
| if (msgid != NULL) { |
| if (ret >= NMSGID) |
| *msgid = NULL; |
| else |
| *msgid = zfs_msgid_table[ret]; |
| } |
| return (ret); |
| } |
| |
| zpool_status_t |
| zpool_import_status(nvlist_t *config, char **msgid, zpool_errata_t *errata) |
| { |
| zpool_status_t ret = check_status(config, B_TRUE, errata); |
| |
| if (ret >= NMSGID) |
| *msgid = NULL; |
| else |
| *msgid = zfs_msgid_table[ret]; |
| |
| return (ret); |
| } |