| /* |
| * 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) 2006, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2011, 2015 by Delphix. All rights reserved. |
| * Copyright (c) 2014 Integros [integros.com] |
| * Copyright 2017 Joyent, Inc. |
| */ |
| |
| #include <sys/spa.h> |
| #include <sys/spa_impl.h> |
| #include <sys/zap.h> |
| #include <sys/dsl_synctask.h> |
| #include <sys/dmu_tx.h> |
| #include <sys/dmu_objset.h> |
| #include <sys/dsl_dataset.h> |
| #include <sys/dsl_dir.h> |
| #include <sys/cmn_err.h> |
| #include <sys/sunddi.h> |
| #include <sys/cred.h> |
| #include "zfs_comutil.h" |
| #include "zfs_gitrev.h" |
| #ifdef _KERNEL |
| #include <sys/zone.h> |
| #endif |
| |
| /* |
| * Routines to manage the on-disk history log. |
| * |
| * The history log is stored as a dmu object containing |
| * <packed record length, record nvlist> tuples. |
| * |
| * Where "record nvlist" is an nvlist containing uint64_ts and strings, and |
| * "packed record length" is the packed length of the "record nvlist" stored |
| * as a little endian uint64_t. |
| * |
| * The log is implemented as a ring buffer, though the original creation |
| * of the pool ('zpool create') is never overwritten. |
| * |
| * The history log is tracked as object 'spa_t::spa_history'. The bonus buffer |
| * of 'spa_history' stores the offsets for logging/retrieving history as |
| * 'spa_history_phys_t'. 'sh_pool_create_len' is the ending offset in bytes of |
| * where the 'zpool create' record is stored. This allows us to never |
| * overwrite the original creation of the pool. 'sh_phys_max_off' is the |
| * physical ending offset in bytes of the log. This tells you the length of |
| * the buffer. 'sh_eof' is the logical EOF (in bytes). Whenever a record |
| * is added, 'sh_eof' is incremented by the size of the record. |
| * 'sh_eof' is never decremented. 'sh_bof' is the logical BOF (in bytes). |
| * This is where the consumer should start reading from after reading in |
| * the 'zpool create' portion of the log. |
| * |
| * 'sh_records_lost' keeps track of how many records have been overwritten |
| * and permanently lost. |
| */ |
| |
| /* convert a logical offset to physical */ |
| static uint64_t |
| spa_history_log_to_phys(uint64_t log_off, spa_history_phys_t *shpp) |
| { |
| uint64_t phys_len; |
| |
| phys_len = shpp->sh_phys_max_off - shpp->sh_pool_create_len; |
| return ((log_off - shpp->sh_pool_create_len) % phys_len |
| + shpp->sh_pool_create_len); |
| } |
| |
| void |
| spa_history_create_obj(spa_t *spa, dmu_tx_t *tx) |
| { |
| dmu_buf_t *dbp; |
| spa_history_phys_t *shpp; |
| objset_t *mos = spa->spa_meta_objset; |
| |
| ASSERT0(spa->spa_history); |
| spa->spa_history = dmu_object_alloc(mos, DMU_OT_SPA_HISTORY, |
| SPA_OLD_MAXBLOCKSIZE, DMU_OT_SPA_HISTORY_OFFSETS, |
| sizeof (spa_history_phys_t), tx); |
| |
| VERIFY0(zap_add(mos, DMU_POOL_DIRECTORY_OBJECT, |
| DMU_POOL_HISTORY, sizeof (uint64_t), 1, |
| &spa->spa_history, tx)); |
| |
| VERIFY0(dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)); |
| ASSERT3U(dbp->db_size, >=, sizeof (spa_history_phys_t)); |
| |
| shpp = dbp->db_data; |
| dmu_buf_will_dirty(dbp, tx); |
| |
| /* |
| * Figure out maximum size of history log. We set it at |
| * 0.1% of pool size, with a max of 1G and min of 128KB. |
| */ |
| shpp->sh_phys_max_off = |
| metaslab_class_get_dspace(spa_normal_class(spa)) / 1000; |
| shpp->sh_phys_max_off = MIN(shpp->sh_phys_max_off, 1<<30); |
| shpp->sh_phys_max_off = MAX(shpp->sh_phys_max_off, 128<<10); |
| |
| dmu_buf_rele(dbp, FTAG); |
| } |
| |
| /* |
| * Change 'sh_bof' to the beginning of the next record. |
| */ |
| static int |
| spa_history_advance_bof(spa_t *spa, spa_history_phys_t *shpp) |
| { |
| objset_t *mos = spa->spa_meta_objset; |
| uint64_t firstread, reclen, phys_bof; |
| char buf[sizeof (reclen)]; |
| int err; |
| |
| phys_bof = spa_history_log_to_phys(shpp->sh_bof, shpp); |
| firstread = MIN(sizeof (reclen), shpp->sh_phys_max_off - phys_bof); |
| |
| if ((err = dmu_read(mos, spa->spa_history, phys_bof, firstread, |
| buf, DMU_READ_PREFETCH)) != 0) |
| return (err); |
| if (firstread != sizeof (reclen)) { |
| if ((err = dmu_read(mos, spa->spa_history, |
| shpp->sh_pool_create_len, sizeof (reclen) - firstread, |
| buf + firstread, DMU_READ_PREFETCH)) != 0) |
| return (err); |
| } |
| |
| reclen = LE_64(*((uint64_t *)buf)); |
| shpp->sh_bof += reclen + sizeof (reclen); |
| shpp->sh_records_lost++; |
| return (0); |
| } |
| |
| static int |
| spa_history_write(spa_t *spa, void *buf, uint64_t len, spa_history_phys_t *shpp, |
| dmu_tx_t *tx) |
| { |
| uint64_t firstwrite, phys_eof; |
| objset_t *mos = spa->spa_meta_objset; |
| int err; |
| |
| ASSERT(MUTEX_HELD(&spa->spa_history_lock)); |
| |
| /* see if we need to reset logical BOF */ |
| while (shpp->sh_phys_max_off - shpp->sh_pool_create_len - |
| (shpp->sh_eof - shpp->sh_bof) <= len) { |
| if ((err = spa_history_advance_bof(spa, shpp)) != 0) { |
| return (err); |
| } |
| } |
| |
| phys_eof = spa_history_log_to_phys(shpp->sh_eof, shpp); |
| firstwrite = MIN(len, shpp->sh_phys_max_off - phys_eof); |
| shpp->sh_eof += len; |
| dmu_write(mos, spa->spa_history, phys_eof, firstwrite, buf, tx); |
| |
| len -= firstwrite; |
| if (len > 0) { |
| /* write out the rest at the beginning of physical file */ |
| dmu_write(mos, spa->spa_history, shpp->sh_pool_create_len, |
| len, (char *)buf + firstwrite, tx); |
| } |
| |
| return (0); |
| } |
| |
| static char * |
| spa_history_zone(void) |
| { |
| #ifdef _KERNEL |
| return ("linux"); |
| #else |
| return (NULL); |
| #endif |
| } |
| |
| /* |
| * Post a history sysevent. |
| * |
| * The nvlist_t* passed into this function will be transformed into a new |
| * nvlist where: |
| * |
| * 1. Nested nvlists will be flattened to a single level |
| * 2. Keys will have their names normalized (to remove any problematic |
| * characters, such as whitespace) |
| * |
| * The nvlist_t passed into this function will duplicated and should be freed |
| * by caller. |
| * |
| */ |
| static void |
| spa_history_log_notify(spa_t *spa, nvlist_t *nvl) |
| { |
| nvlist_t *hist_nvl = fnvlist_alloc(); |
| uint64_t uint64; |
| char *string; |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_CMD, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_CMD, string); |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_INT_NAME, string); |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_ZONE, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_ZONE, string); |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_HOST, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_HOST, string); |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_DSNAME, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_DSNAME, string); |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_INT_STR, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_INT_STR, string); |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_IOCTL, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_IOCTL, string); |
| |
| if (nvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME, &string) == 0) |
| fnvlist_add_string(hist_nvl, ZFS_EV_HIST_INT_NAME, string); |
| |
| if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_DSID, &uint64) == 0) |
| fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_DSID, uint64); |
| |
| if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_TXG, &uint64) == 0) |
| fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_TXG, uint64); |
| |
| if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_TIME, &uint64) == 0) |
| fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_TIME, uint64); |
| |
| if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_WHO, &uint64) == 0) |
| fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_WHO, uint64); |
| |
| if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_INT_EVENT, &uint64) == 0) |
| fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_INT_EVENT, uint64); |
| |
| spa_event_notify(spa, NULL, hist_nvl, ESC_ZFS_HISTORY_EVENT); |
| |
| nvlist_free(hist_nvl); |
| } |
| |
| /* |
| * Write out a history event. |
| */ |
| /*ARGSUSED*/ |
| static void |
| spa_history_log_sync(void *arg, dmu_tx_t *tx) |
| { |
| nvlist_t *nvl = arg; |
| spa_t *spa = dmu_tx_pool(tx)->dp_spa; |
| objset_t *mos = spa->spa_meta_objset; |
| dmu_buf_t *dbp; |
| spa_history_phys_t *shpp; |
| size_t reclen; |
| uint64_t le_len; |
| char *record_packed = NULL; |
| int ret; |
| |
| /* |
| * If we have an older pool that doesn't have a command |
| * history object, create it now. |
| */ |
| mutex_enter(&spa->spa_history_lock); |
| if (!spa->spa_history) |
| spa_history_create_obj(spa, tx); |
| mutex_exit(&spa->spa_history_lock); |
| |
| /* |
| * Get the offset of where we need to write via the bonus buffer. |
| * Update the offset when the write completes. |
| */ |
| VERIFY0(dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)); |
| shpp = dbp->db_data; |
| |
| dmu_buf_will_dirty(dbp, tx); |
| |
| #ifdef ZFS_DEBUG |
| { |
| dmu_object_info_t doi; |
| dmu_object_info_from_db(dbp, &doi); |
| ASSERT3U(doi.doi_bonus_type, ==, DMU_OT_SPA_HISTORY_OFFSETS); |
| } |
| #endif |
| |
| fnvlist_add_uint64(nvl, ZPOOL_HIST_TIME, gethrestime_sec()); |
| fnvlist_add_string(nvl, ZPOOL_HIST_HOST, utsname()->nodename); |
| |
| if (nvlist_exists(nvl, ZPOOL_HIST_CMD)) { |
| zfs_dbgmsg("command: %s", |
| fnvlist_lookup_string(nvl, ZPOOL_HIST_CMD)); |
| } else if (nvlist_exists(nvl, ZPOOL_HIST_INT_NAME)) { |
| if (nvlist_exists(nvl, ZPOOL_HIST_DSNAME)) { |
| zfs_dbgmsg("txg %lld %s %s (id %llu) %s", |
| fnvlist_lookup_uint64(nvl, ZPOOL_HIST_TXG), |
| fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME), |
| fnvlist_lookup_string(nvl, ZPOOL_HIST_DSNAME), |
| fnvlist_lookup_uint64(nvl, ZPOOL_HIST_DSID), |
| fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_STR)); |
| } else { |
| zfs_dbgmsg("txg %lld %s %s", |
| fnvlist_lookup_uint64(nvl, ZPOOL_HIST_TXG), |
| fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME), |
| fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_STR)); |
| } |
| /* |
| * The history sysevent is posted only for internal history |
| * messages to show what has happened, not how it happened. For |
| * example, the following command: |
| * |
| * # zfs destroy -r tank/foo |
| * |
| * will result in one sysevent posted per dataset that is |
| * destroyed as a result of the command - which could be more |
| * than one event in total. By contrast, if the sysevent was |
| * posted as a result of the ZPOOL_HIST_CMD key being present |
| * it would result in only one sysevent being posted with the |
| * full command line arguments, requiring the consumer to know |
| * how to parse and understand zfs(1M) command invocations. |
| */ |
| spa_history_log_notify(spa, nvl); |
| } else if (nvlist_exists(nvl, ZPOOL_HIST_IOCTL)) { |
| zfs_dbgmsg("ioctl %s", |
| fnvlist_lookup_string(nvl, ZPOOL_HIST_IOCTL)); |
| } |
| |
| VERIFY3U(nvlist_pack(nvl, &record_packed, &reclen, NV_ENCODE_NATIVE, |
| KM_SLEEP), ==, 0); |
| |
| mutex_enter(&spa->spa_history_lock); |
| |
| /* write out the packed length as little endian */ |
| le_len = LE_64((uint64_t)reclen); |
| ret = spa_history_write(spa, &le_len, sizeof (le_len), shpp, tx); |
| if (!ret) |
| ret = spa_history_write(spa, record_packed, reclen, shpp, tx); |
| |
| /* The first command is the create, which we keep forever */ |
| if (ret == 0 && shpp->sh_pool_create_len == 0 && |
| nvlist_exists(nvl, ZPOOL_HIST_CMD)) { |
| shpp->sh_pool_create_len = shpp->sh_bof = shpp->sh_eof; |
| } |
| |
| mutex_exit(&spa->spa_history_lock); |
| fnvlist_pack_free(record_packed, reclen); |
| dmu_buf_rele(dbp, FTAG); |
| fnvlist_free(nvl); |
| } |
| |
| /* |
| * Write out a history event. |
| */ |
| int |
| spa_history_log(spa_t *spa, const char *msg) |
| { |
| int err; |
| nvlist_t *nvl = fnvlist_alloc(); |
| |
| fnvlist_add_string(nvl, ZPOOL_HIST_CMD, msg); |
| err = spa_history_log_nvl(spa, nvl); |
| fnvlist_free(nvl); |
| return (err); |
| } |
| |
| int |
| spa_history_log_nvl(spa_t *spa, nvlist_t *nvl) |
| { |
| int err = 0; |
| dmu_tx_t *tx; |
| nvlist_t *nvarg, *in_nvl = NULL; |
| |
| if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY || !spa_writeable(spa)) |
| return (SET_ERROR(EINVAL)); |
| |
| err = nvlist_lookup_nvlist(nvl, ZPOOL_HIST_INPUT_NVL, &in_nvl); |
| if (err == 0) { |
| (void) nvlist_remove_all(in_nvl, ZPOOL_HIDDEN_ARGS); |
| } |
| |
| tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); |
| err = dmu_tx_assign(tx, TXG_WAIT); |
| if (err) { |
| dmu_tx_abort(tx); |
| return (err); |
| } |
| |
| VERIFY0(nvlist_dup(nvl, &nvarg, KM_SLEEP)); |
| if (spa_history_zone() != NULL) { |
| fnvlist_add_string(nvarg, ZPOOL_HIST_ZONE, |
| spa_history_zone()); |
| } |
| fnvlist_add_uint64(nvarg, ZPOOL_HIST_WHO, crgetruid(CRED())); |
| |
| /* Kick this off asynchronously; errors are ignored. */ |
| dsl_sync_task_nowait(spa_get_dsl(spa), spa_history_log_sync, |
| nvarg, 0, ZFS_SPACE_CHECK_NONE, tx); |
| dmu_tx_commit(tx); |
| |
| /* spa_history_log_sync will free nvl */ |
| return (err); |
| |
| } |
| |
| /* |
| * Read out the command history. |
| */ |
| int |
| spa_history_get(spa_t *spa, uint64_t *offp, uint64_t *len, char *buf) |
| { |
| objset_t *mos = spa->spa_meta_objset; |
| dmu_buf_t *dbp; |
| uint64_t read_len, phys_read_off, phys_eof; |
| uint64_t leftover = 0; |
| spa_history_phys_t *shpp; |
| int err; |
| |
| /* |
| * If the command history doesn't exist (older pool), |
| * that's ok, just return ENOENT. |
| */ |
| if (!spa->spa_history) |
| return (SET_ERROR(ENOENT)); |
| |
| /* |
| * The history is logged asynchronously, so when they request |
| * the first chunk of history, make sure everything has been |
| * synced to disk so that we get it. |
| */ |
| if (*offp == 0 && spa_writeable(spa)) |
| txg_wait_synced(spa_get_dsl(spa), 0); |
| |
| if ((err = dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)) != 0) |
| return (err); |
| shpp = dbp->db_data; |
| |
| #ifdef ZFS_DEBUG |
| { |
| dmu_object_info_t doi; |
| dmu_object_info_from_db(dbp, &doi); |
| ASSERT3U(doi.doi_bonus_type, ==, DMU_OT_SPA_HISTORY_OFFSETS); |
| } |
| #endif |
| |
| mutex_enter(&spa->spa_history_lock); |
| phys_eof = spa_history_log_to_phys(shpp->sh_eof, shpp); |
| |
| if (*offp < shpp->sh_pool_create_len) { |
| /* read in just the zpool create history */ |
| phys_read_off = *offp; |
| read_len = MIN(*len, shpp->sh_pool_create_len - |
| phys_read_off); |
| } else { |
| /* |
| * Need to reset passed in offset to BOF if the passed in |
| * offset has since been overwritten. |
| */ |
| *offp = MAX(*offp, shpp->sh_bof); |
| phys_read_off = spa_history_log_to_phys(*offp, shpp); |
| |
| /* |
| * Read up to the minimum of what the user passed down or |
| * the EOF (physical or logical). If we hit physical EOF, |
| * use 'leftover' to read from the physical BOF. |
| */ |
| if (phys_read_off <= phys_eof) { |
| read_len = MIN(*len, phys_eof - phys_read_off); |
| } else { |
| read_len = MIN(*len, |
| shpp->sh_phys_max_off - phys_read_off); |
| if (phys_read_off + *len > shpp->sh_phys_max_off) { |
| leftover = MIN(*len - read_len, |
| phys_eof - shpp->sh_pool_create_len); |
| } |
| } |
| } |
| |
| /* offset for consumer to use next */ |
| *offp += read_len + leftover; |
| |
| /* tell the consumer how much you actually read */ |
| *len = read_len + leftover; |
| |
| if (read_len == 0) { |
| mutex_exit(&spa->spa_history_lock); |
| dmu_buf_rele(dbp, FTAG); |
| return (0); |
| } |
| |
| err = dmu_read(mos, spa->spa_history, phys_read_off, read_len, buf, |
| DMU_READ_PREFETCH); |
| if (leftover && err == 0) { |
| err = dmu_read(mos, spa->spa_history, shpp->sh_pool_create_len, |
| leftover, buf + read_len, DMU_READ_PREFETCH); |
| } |
| mutex_exit(&spa->spa_history_lock); |
| |
| dmu_buf_rele(dbp, FTAG); |
| return (err); |
| } |
| |
| /* |
| * The nvlist will be consumed by this call. |
| */ |
| static void |
| log_internal(nvlist_t *nvl, const char *operation, spa_t *spa, |
| dmu_tx_t *tx, const char *fmt, va_list adx) |
| { |
| char *msg; |
| |
| /* |
| * If this is part of creating a pool, not everything is |
| * initialized yet, so don't bother logging the internal events. |
| * Likewise if the pool is not writeable. |
| */ |
| if (spa_is_initializing(spa) || !spa_writeable(spa)) { |
| fnvlist_free(nvl); |
| return; |
| } |
| |
| msg = kmem_vasprintf(fmt, adx); |
| fnvlist_add_string(nvl, ZPOOL_HIST_INT_STR, msg); |
| strfree(msg); |
| |
| fnvlist_add_string(nvl, ZPOOL_HIST_INT_NAME, operation); |
| fnvlist_add_uint64(nvl, ZPOOL_HIST_TXG, tx->tx_txg); |
| |
| if (dmu_tx_is_syncing(tx)) { |
| spa_history_log_sync(nvl, tx); |
| } else { |
| dsl_sync_task_nowait(spa_get_dsl(spa), |
| spa_history_log_sync, nvl, 0, ZFS_SPACE_CHECK_NONE, tx); |
| } |
| /* spa_history_log_sync() will free nvl */ |
| } |
| |
| void |
| spa_history_log_internal(spa_t *spa, const char *operation, |
| dmu_tx_t *tx, const char *fmt, ...) |
| { |
| dmu_tx_t *htx = tx; |
| va_list adx; |
| |
| /* create a tx if we didn't get one */ |
| if (tx == NULL) { |
| htx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); |
| if (dmu_tx_assign(htx, TXG_WAIT) != 0) { |
| dmu_tx_abort(htx); |
| return; |
| } |
| } |
| |
| va_start(adx, fmt); |
| log_internal(fnvlist_alloc(), operation, spa, htx, fmt, adx); |
| va_end(adx); |
| |
| /* if we didn't get a tx from the caller, commit the one we made */ |
| if (tx == NULL) |
| dmu_tx_commit(htx); |
| } |
| |
| void |
| spa_history_log_internal_ds(dsl_dataset_t *ds, const char *operation, |
| dmu_tx_t *tx, const char *fmt, ...) |
| { |
| va_list adx; |
| char namebuf[ZFS_MAX_DATASET_NAME_LEN]; |
| nvlist_t *nvl = fnvlist_alloc(); |
| |
| ASSERT(tx != NULL); |
| |
| dsl_dataset_name(ds, namebuf); |
| fnvlist_add_string(nvl, ZPOOL_HIST_DSNAME, namebuf); |
| fnvlist_add_uint64(nvl, ZPOOL_HIST_DSID, ds->ds_object); |
| |
| va_start(adx, fmt); |
| log_internal(nvl, operation, dsl_dataset_get_spa(ds), tx, fmt, adx); |
| va_end(adx); |
| } |
| |
| void |
| spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation, |
| dmu_tx_t *tx, const char *fmt, ...) |
| { |
| va_list adx; |
| char namebuf[ZFS_MAX_DATASET_NAME_LEN]; |
| nvlist_t *nvl = fnvlist_alloc(); |
| |
| ASSERT(tx != NULL); |
| |
| dsl_dir_name(dd, namebuf); |
| fnvlist_add_string(nvl, ZPOOL_HIST_DSNAME, namebuf); |
| fnvlist_add_uint64(nvl, ZPOOL_HIST_DSID, |
| dsl_dir_phys(dd)->dd_head_dataset_obj); |
| |
| va_start(adx, fmt); |
| log_internal(nvl, operation, dd->dd_pool->dp_spa, tx, fmt, adx); |
| va_end(adx); |
| } |
| |
| void |
| spa_history_log_version(spa_t *spa, const char *operation, dmu_tx_t *tx) |
| { |
| utsname_t *u = utsname(); |
| |
| spa_history_log_internal(spa, operation, tx, |
| "pool version %llu; software version %s; uts %s %s %s %s", |
| (u_longlong_t)spa_version(spa), ZFS_META_GITREV, |
| u->nodename, u->release, u->version, u->machine); |
| } |
| |
| #if defined(_KERNEL) |
| EXPORT_SYMBOL(spa_history_create_obj); |
| EXPORT_SYMBOL(spa_history_get); |
| EXPORT_SYMBOL(spa_history_log); |
| EXPORT_SYMBOL(spa_history_log_internal); |
| EXPORT_SYMBOL(spa_history_log_version); |
| #endif |