1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2011, 2015 by Delphix. All rights reserved. 25 * Copyright (c) 2014 Integros [integros.com] 26 * Copyright 2017 Joyent, Inc. 27 */ 28 29#include <sys/spa.h> 30#include <sys/spa_impl.h> 31#include <sys/zap.h> 32#include <sys/dsl_synctask.h> 33#include <sys/dmu_tx.h> 34#include <sys/dmu_objset.h> 35#include <sys/dsl_dataset.h> 36#include <sys/dsl_dir.h> 37#include <sys/utsname.h> 38#include <sys/sunddi.h> 39#include <sys/cred.h> 40#include "zfs_comutil.h" 41#ifdef _KERNEL 42#include <sys/cmn_err.h> 43#include <sys/zone.h> 44#endif 45 46/* 47 * Routines to manage the on-disk history log. 48 * 49 * The history log is stored as a dmu object containing 50 * <packed record length, record nvlist> tuples. 51 * 52 * Where "record nvlist" is a nvlist containing uint64_ts and strings, and 53 * "packed record length" is the packed length of the "record nvlist" stored 54 * as a little endian uint64_t. 55 * 56 * The log is implemented as a ring buffer, though the original creation 57 * of the pool ('zpool create') is never overwritten. 58 * 59 * The history log is tracked as object 'spa_t::spa_history'. The bonus buffer 60 * of 'spa_history' stores the offsets for logging/retrieving history as 61 * 'spa_history_phys_t'. 'sh_pool_create_len' is the ending offset in bytes of 62 * where the 'zpool create' record is stored. This allows us to never 63 * overwrite the original creation of the pool. 'sh_phys_max_off' is the 64 * physical ending offset in bytes of the log. This tells you the length of 65 * the buffer. 'sh_eof' is the logical EOF (in bytes). Whenever a record 66 * is added, 'sh_eof' is incremented by the the size of the record. 67 * 'sh_eof' is never decremented. 'sh_bof' is the logical BOF (in bytes). 68 * This is where the consumer should start reading from after reading in 69 * the 'zpool create' portion of the log. 70 * 71 * 'sh_records_lost' keeps track of how many records have been overwritten 72 * and permanently lost. 73 */ 74 75/* convert a logical offset to physical */ 76static uint64_t 77spa_history_log_to_phys(uint64_t log_off, spa_history_phys_t *shpp) 78{ 79 uint64_t phys_len; 80 81 phys_len = shpp->sh_phys_max_off - shpp->sh_pool_create_len; 82 return ((log_off - shpp->sh_pool_create_len) % phys_len 83 + shpp->sh_pool_create_len); 84} 85 86void 87spa_history_create_obj(spa_t *spa, dmu_tx_t *tx) 88{ 89 dmu_buf_t *dbp; 90 spa_history_phys_t *shpp; 91 objset_t *mos = spa->spa_meta_objset; 92 93 ASSERT(spa->spa_history == 0); 94 spa->spa_history = dmu_object_alloc(mos, DMU_OT_SPA_HISTORY, 95 SPA_OLD_MAXBLOCKSIZE, DMU_OT_SPA_HISTORY_OFFSETS, 96 sizeof (spa_history_phys_t), tx); 97 98 VERIFY(zap_add(mos, DMU_POOL_DIRECTORY_OBJECT, 99 DMU_POOL_HISTORY, sizeof (uint64_t), 1, 100 &spa->spa_history, tx) == 0); 101 102 VERIFY(0 == dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)); 103 ASSERT(dbp->db_size >= sizeof (spa_history_phys_t)); 104 105 shpp = dbp->db_data; 106 dmu_buf_will_dirty(dbp, tx); 107 108 /* 109 * Figure out maximum size of history log. We set it at 110 * 0.1% of pool size, with a max of 1G and min of 128KB. 111 */ 112 shpp->sh_phys_max_off = 113 metaslab_class_get_dspace(spa_normal_class(spa)) / 1000; 114 shpp->sh_phys_max_off = MIN(shpp->sh_phys_max_off, 1<<30); 115 shpp->sh_phys_max_off = MAX(shpp->sh_phys_max_off, 128<<10); 116 117 dmu_buf_rele(dbp, FTAG); 118} 119 120/* 121 * Change 'sh_bof' to the beginning of the next record. 122 */ 123static int 124spa_history_advance_bof(spa_t *spa, spa_history_phys_t *shpp) 125{ 126 objset_t *mos = spa->spa_meta_objset; 127 uint64_t firstread, reclen, phys_bof; 128 char buf[sizeof (reclen)]; 129 int err; 130 131 phys_bof = spa_history_log_to_phys(shpp->sh_bof, shpp); 132 firstread = MIN(sizeof (reclen), shpp->sh_phys_max_off - phys_bof); 133 134 if ((err = dmu_read(mos, spa->spa_history, phys_bof, firstread, 135 buf, DMU_READ_PREFETCH)) != 0) 136 return (err); 137 if (firstread != sizeof (reclen)) { 138 if ((err = dmu_read(mos, spa->spa_history, 139 shpp->sh_pool_create_len, sizeof (reclen) - firstread, 140 buf + firstread, DMU_READ_PREFETCH)) != 0) 141 return (err); 142 } 143 144 reclen = LE_64(*((uint64_t *)buf)); 145 shpp->sh_bof += reclen + sizeof (reclen); 146 shpp->sh_records_lost++; 147 return (0); 148} 149 150static int 151spa_history_write(spa_t *spa, void *buf, uint64_t len, spa_history_phys_t *shpp, 152 dmu_tx_t *tx) 153{ 154 uint64_t firstwrite, phys_eof; 155 objset_t *mos = spa->spa_meta_objset; 156 int err; 157 158 ASSERT(MUTEX_HELD(&spa->spa_history_lock)); 159 160 /* see if we need to reset logical BOF */ 161 while (shpp->sh_phys_max_off - shpp->sh_pool_create_len - 162 (shpp->sh_eof - shpp->sh_bof) <= len) { 163 if ((err = spa_history_advance_bof(spa, shpp)) != 0) { 164 return (err); 165 } 166 } 167 168 phys_eof = spa_history_log_to_phys(shpp->sh_eof, shpp); 169 firstwrite = MIN(len, shpp->sh_phys_max_off - phys_eof); 170 shpp->sh_eof += len; 171 dmu_write(mos, spa->spa_history, phys_eof, firstwrite, buf, tx); 172 173 len -= firstwrite; 174 if (len > 0) { 175 /* write out the rest at the beginning of physical file */ 176 dmu_write(mos, spa->spa_history, shpp->sh_pool_create_len, 177 len, (char *)buf + firstwrite, tx); 178 } 179 180 return (0); 181} 182 183static char * 184spa_history_zone(void) 185{ 186#ifdef _KERNEL 187 /* XXX: pr_hostname can be changed by default from within a jail! */ 188 if (jailed(curthread->td_ucred)) 189 return (curthread->td_ucred->cr_prison->pr_hostname); 190#endif 191 return (NULL); 192} 193 194/* 195 * Post a history sysevent. 196 * 197 * The nvlist_t* passed into this function will be transformed into a new 198 * nvlist where: 199 * 200 * 1. Nested nvlists will be flattened to a single level 201 * 2. Keys will have their names normalized (to remove any problematic 202 * characters, such as whitespace) 203 * 204 * The nvlist_t passed into this function will duplicated and should be freed 205 * by caller. 206 * 207 */ 208static void 209spa_history_log_notify(spa_t *spa, nvlist_t *nvl) 210{ 211 nvlist_t *hist_nvl = fnvlist_alloc(); 212 uint64_t uint64; 213 char *string; 214 215 if (nvlist_lookup_string(nvl, ZPOOL_HIST_CMD, &string) == 0) 216 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_CMD, string); 217 218 if (nvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME, &string) == 0) 219 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_INT_NAME, string); 220 221 if (nvlist_lookup_string(nvl, ZPOOL_HIST_ZONE, &string) == 0) 222 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_ZONE, string); 223 224 if (nvlist_lookup_string(nvl, ZPOOL_HIST_HOST, &string) == 0) 225 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_HOST, string); 226 227 if (nvlist_lookup_string(nvl, ZPOOL_HIST_DSNAME, &string) == 0) 228 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_DSNAME, string); 229 230 if (nvlist_lookup_string(nvl, ZPOOL_HIST_INT_STR, &string) == 0) 231 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_INT_STR, string); 232 233 if (nvlist_lookup_string(nvl, ZPOOL_HIST_IOCTL, &string) == 0) 234 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_IOCTL, string); 235 236 if (nvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME, &string) == 0) 237 fnvlist_add_string(hist_nvl, ZFS_EV_HIST_INT_NAME, string); 238 239 if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_DSID, &uint64) == 0) 240 fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_DSID, uint64); 241 242 if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_TXG, &uint64) == 0) 243 fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_TXG, uint64); 244 245 if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_TIME, &uint64) == 0) 246 fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_TIME, uint64); 247 248 if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_WHO, &uint64) == 0) 249 fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_WHO, uint64); 250 251 if (nvlist_lookup_uint64(nvl, ZPOOL_HIST_INT_EVENT, &uint64) == 0) 252 fnvlist_add_uint64(hist_nvl, ZFS_EV_HIST_INT_EVENT, uint64); 253 254 spa_event_notify(spa, NULL, hist_nvl, ESC_ZFS_HISTORY_EVENT); 255 256 nvlist_free(hist_nvl); 257} 258 259/* 260 * Write out a history event. 261 */ 262/*ARGSUSED*/ 263static void 264spa_history_log_sync(void *arg, dmu_tx_t *tx) 265{ 266 nvlist_t *nvl = arg; 267 spa_t *spa = dmu_tx_pool(tx)->dp_spa; 268 objset_t *mos = spa->spa_meta_objset; 269 dmu_buf_t *dbp; 270 spa_history_phys_t *shpp; 271 size_t reclen; 272 uint64_t le_len; 273 char *record_packed = NULL; 274 int ret; 275 276 /* 277 * If we have an older pool that doesn't have a command 278 * history object, create it now. 279 */ 280 mutex_enter(&spa->spa_history_lock); 281 if (!spa->spa_history) 282 spa_history_create_obj(spa, tx); 283 mutex_exit(&spa->spa_history_lock); 284 285 /* 286 * Get the offset of where we need to write via the bonus buffer. 287 * Update the offset when the write completes. 288 */ 289 VERIFY0(dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)); 290 shpp = dbp->db_data; 291 292 dmu_buf_will_dirty(dbp, tx); 293 294#ifdef ZFS_DEBUG 295 { 296 dmu_object_info_t doi; 297 dmu_object_info_from_db(dbp, &doi); 298 ASSERT3U(doi.doi_bonus_type, ==, DMU_OT_SPA_HISTORY_OFFSETS); 299 } 300#endif 301 302 fnvlist_add_uint64(nvl, ZPOOL_HIST_TIME, gethrestime_sec()); 303#ifdef _KERNEL 304 fnvlist_add_string(nvl, ZPOOL_HIST_HOST, utsname.nodename); 305#endif 306 if (nvlist_exists(nvl, ZPOOL_HIST_CMD)) { 307 zfs_dbgmsg("command: %s", 308 fnvlist_lookup_string(nvl, ZPOOL_HIST_CMD)); 309 } else if (nvlist_exists(nvl, ZPOOL_HIST_INT_NAME)) { 310 if (nvlist_exists(nvl, ZPOOL_HIST_DSNAME)) { 311 zfs_dbgmsg("txg %lld %s %s (id %llu) %s", 312 fnvlist_lookup_uint64(nvl, ZPOOL_HIST_TXG), 313 fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME), 314 fnvlist_lookup_string(nvl, ZPOOL_HIST_DSNAME), 315 fnvlist_lookup_uint64(nvl, ZPOOL_HIST_DSID), 316 fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_STR)); 317 } else { 318 zfs_dbgmsg("txg %lld %s %s", 319 fnvlist_lookup_uint64(nvl, ZPOOL_HIST_TXG), 320 fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_NAME), 321 fnvlist_lookup_string(nvl, ZPOOL_HIST_INT_STR)); 322 } 323 /* 324 * The history sysevent is posted only for internal history 325 * messages to show what has happened, not how it happened. For 326 * example, the following command: 327 * 328 * # zfs destroy -r tank/foo 329 * 330 * will result in one sysevent posted per dataset that is 331 * destroyed as a result of the command - which could be more 332 * than one event in total. By contrast, if the sysevent was 333 * posted as a result of the ZPOOL_HIST_CMD key being present 334 * it would result in only one sysevent being posted with the 335 * full command line arguments, requiring the consumer to know 336 * how to parse and understand zfs(1M) command invocations. 337 */ 338 spa_history_log_notify(spa, nvl); 339 } else if (nvlist_exists(nvl, ZPOOL_HIST_IOCTL)) { 340 zfs_dbgmsg("ioctl %s", 341 fnvlist_lookup_string(nvl, ZPOOL_HIST_IOCTL)); 342 } 343 344 record_packed = fnvlist_pack(nvl, &reclen); 345 346 mutex_enter(&spa->spa_history_lock); 347 348 /* write out the packed length as little endian */ 349 le_len = LE_64((uint64_t)reclen); 350 ret = spa_history_write(spa, &le_len, sizeof (le_len), shpp, tx); 351 if (!ret) 352 ret = spa_history_write(spa, record_packed, reclen, shpp, tx); 353 354 /* The first command is the create, which we keep forever */ 355 if (ret == 0 && shpp->sh_pool_create_len == 0 && 356 nvlist_exists(nvl, ZPOOL_HIST_CMD)) { 357 shpp->sh_pool_create_len = shpp->sh_bof = shpp->sh_eof; 358 } 359 360 mutex_exit(&spa->spa_history_lock); 361 fnvlist_pack_free(record_packed, reclen); 362 dmu_buf_rele(dbp, FTAG); 363 fnvlist_free(nvl); 364} 365 366/* 367 * Write out a history event. 368 */ 369int 370spa_history_log(spa_t *spa, const char *msg) 371{ 372 int err; 373 nvlist_t *nvl = fnvlist_alloc(); 374 375 fnvlist_add_string(nvl, ZPOOL_HIST_CMD, msg); 376 err = spa_history_log_nvl(spa, nvl); 377 fnvlist_free(nvl); 378 return (err); 379} 380 381int 382spa_history_log_nvl(spa_t *spa, nvlist_t *nvl) 383{ 384 int err = 0; 385 dmu_tx_t *tx; 386 nvlist_t *nvarg; 387 388 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) 389 return (EINVAL); 390 391 if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY || !spa_writeable(spa)) 392 return (SET_ERROR(EINVAL)); 393 394 tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); 395 err = dmu_tx_assign(tx, TXG_WAIT); 396 if (err) { 397 dmu_tx_abort(tx); 398 return (err); 399 } 400 401 nvarg = fnvlist_dup(nvl); 402 if (spa_history_zone() != NULL) { 403 fnvlist_add_string(nvarg, ZPOOL_HIST_ZONE, 404 spa_history_zone()); 405 } 406 fnvlist_add_uint64(nvarg, ZPOOL_HIST_WHO, crgetruid(CRED())); 407 408 /* Kick this off asynchronously; errors are ignored. */ 409 dsl_sync_task_nowait(spa_get_dsl(spa), spa_history_log_sync, 410 nvarg, 0, ZFS_SPACE_CHECK_NONE, tx); 411 dmu_tx_commit(tx); 412 413 /* spa_history_log_sync will free nvl */ 414 return (err); 415 416} 417 418/* 419 * Read out the command history. 420 */ 421int 422spa_history_get(spa_t *spa, uint64_t *offp, uint64_t *len, char *buf) 423{ 424 objset_t *mos = spa->spa_meta_objset; 425 dmu_buf_t *dbp; 426 uint64_t read_len, phys_read_off, phys_eof; 427 uint64_t leftover = 0; 428 spa_history_phys_t *shpp; 429 int err; 430 431 /* 432 * If the command history doesn't exist (older pool), 433 * that's ok, just return ENOENT. 434 */ 435 if (!spa->spa_history) 436 return (SET_ERROR(ENOENT)); 437 438 /* 439 * The history is logged asynchronously, so when they request 440 * the first chunk of history, make sure everything has been 441 * synced to disk so that we get it. 442 */ 443 if (*offp == 0 && spa_writeable(spa)) 444 txg_wait_synced(spa_get_dsl(spa), 0); 445 446 if ((err = dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)) != 0) 447 return (err); 448 shpp = dbp->db_data; 449 450#ifdef ZFS_DEBUG 451 { 452 dmu_object_info_t doi; 453 dmu_object_info_from_db(dbp, &doi); 454 ASSERT3U(doi.doi_bonus_type, ==, DMU_OT_SPA_HISTORY_OFFSETS); 455 } 456#endif 457 458 mutex_enter(&spa->spa_history_lock); 459 phys_eof = spa_history_log_to_phys(shpp->sh_eof, shpp); 460 461 if (*offp < shpp->sh_pool_create_len) { 462 /* read in just the zpool create history */ 463 phys_read_off = *offp; 464 read_len = MIN(*len, shpp->sh_pool_create_len - 465 phys_read_off); 466 } else { 467 /* 468 * Need to reset passed in offset to BOF if the passed in 469 * offset has since been overwritten. 470 */ 471 *offp = MAX(*offp, shpp->sh_bof); 472 phys_read_off = spa_history_log_to_phys(*offp, shpp); 473 474 /* 475 * Read up to the minimum of what the user passed down or 476 * the EOF (physical or logical). If we hit physical EOF, 477 * use 'leftover' to read from the physical BOF. 478 */ 479 if (phys_read_off <= phys_eof) { 480 read_len = MIN(*len, phys_eof - phys_read_off); 481 } else { 482 read_len = MIN(*len, 483 shpp->sh_phys_max_off - phys_read_off); 484 if (phys_read_off + *len > shpp->sh_phys_max_off) { 485 leftover = MIN(*len - read_len, 486 phys_eof - shpp->sh_pool_create_len); 487 } 488 } 489 } 490 491 /* offset for consumer to use next */ 492 *offp += read_len + leftover; 493 494 /* tell the consumer how much you actually read */ 495 *len = read_len + leftover; 496 497 if (read_len == 0) { 498 mutex_exit(&spa->spa_history_lock); 499 dmu_buf_rele(dbp, FTAG); 500 return (0); 501 } 502 503 err = dmu_read(mos, spa->spa_history, phys_read_off, read_len, buf, 504 DMU_READ_PREFETCH); 505 if (leftover && err == 0) { 506 err = dmu_read(mos, spa->spa_history, shpp->sh_pool_create_len, 507 leftover, buf + read_len, DMU_READ_PREFETCH); 508 } 509 mutex_exit(&spa->spa_history_lock); 510 511 dmu_buf_rele(dbp, FTAG); 512 return (err); 513} 514 515/* 516 * The nvlist will be consumed by this call. 517 */ 518static void 519log_internal(nvlist_t *nvl, const char *operation, spa_t *spa, 520 dmu_tx_t *tx, const char *fmt, va_list adx) 521{ 522 char *msg; 523 va_list adx2; 524 525 /* 526 * If this is part of creating a pool, not everything is 527 * initialized yet, so don't bother logging the internal events. 528 * Likewise if the pool is not writeable. 529 */ 530 if (tx->tx_txg == TXG_INITIAL || !spa_writeable(spa)) { 531 fnvlist_free(nvl); 532 return; 533 } 534 535 va_copy(adx2, adx); 536 537 msg = kmem_alloc(vsnprintf(NULL, 0, fmt, adx) + 1, KM_SLEEP); 538 (void) vsprintf(msg, fmt, adx2); 539 fnvlist_add_string(nvl, ZPOOL_HIST_INT_STR, msg); 540 strfree(msg); 541 542 va_end(adx2); 543 544 fnvlist_add_string(nvl, ZPOOL_HIST_INT_NAME, operation); 545 fnvlist_add_uint64(nvl, ZPOOL_HIST_TXG, tx->tx_txg); 546 547 if (dmu_tx_is_syncing(tx)) { 548 spa_history_log_sync(nvl, tx); 549 } else { 550 dsl_sync_task_nowait(spa_get_dsl(spa), 551 spa_history_log_sync, nvl, 0, ZFS_SPACE_CHECK_NONE, tx); 552 } 553 /* spa_history_log_sync() will free nvl */ 554} 555 556void 557spa_history_log_internal(spa_t *spa, const char *operation, 558 dmu_tx_t *tx, const char *fmt, ...) 559{ 560 dmu_tx_t *htx = tx; 561 va_list adx; 562 563 /* create a tx if we didn't get one */ 564 if (tx == NULL) { 565 htx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); 566 if (dmu_tx_assign(htx, TXG_WAIT) != 0) { 567 dmu_tx_abort(htx); 568 return; 569 } 570 } 571 572 va_start(adx, fmt); 573 log_internal(fnvlist_alloc(), operation, spa, htx, fmt, adx); 574 va_end(adx); 575 576 /* if we didn't get a tx from the caller, commit the one we made */ 577 if (tx == NULL) 578 dmu_tx_commit(htx); 579} 580 581void 582spa_history_log_internal_ds(dsl_dataset_t *ds, const char *operation, 583 dmu_tx_t *tx, const char *fmt, ...) 584{ 585 va_list adx; 586 char namebuf[ZFS_MAX_DATASET_NAME_LEN]; 587 nvlist_t *nvl = fnvlist_alloc(); 588 589 ASSERT(tx != NULL); 590 591 dsl_dataset_name(ds, namebuf); 592 fnvlist_add_string(nvl, ZPOOL_HIST_DSNAME, namebuf); 593 fnvlist_add_uint64(nvl, ZPOOL_HIST_DSID, ds->ds_object); 594 595 va_start(adx, fmt); 596 log_internal(nvl, operation, dsl_dataset_get_spa(ds), tx, fmt, adx); 597 va_end(adx); 598} 599 600void 601spa_history_log_internal_dd(dsl_dir_t *dd, const char *operation, 602 dmu_tx_t *tx, const char *fmt, ...) 603{ 604 va_list adx; 605 char namebuf[ZFS_MAX_DATASET_NAME_LEN]; 606 nvlist_t *nvl = fnvlist_alloc(); 607 608 ASSERT(tx != NULL); 609 610 dsl_dir_name(dd, namebuf); 611 fnvlist_add_string(nvl, ZPOOL_HIST_DSNAME, namebuf); 612 fnvlist_add_uint64(nvl, ZPOOL_HIST_DSID, 613 dsl_dir_phys(dd)->dd_head_dataset_obj); 614 615 va_start(adx, fmt); 616 log_internal(nvl, operation, dd->dd_pool->dp_spa, tx, fmt, adx); 617 va_end(adx); 618} 619 620void 621spa_history_log_version(spa_t *spa, const char *operation) 622{ 623 spa_history_log_internal(spa, operation, NULL, 624 "pool version %llu; software version %llu/%llu; uts %s %s %s %s", 625 (u_longlong_t)spa_version(spa), SPA_VERSION, ZPL_VERSION, 626 utsname.nodename, utsname.release, utsname.version, 627 utsname.machine); 628} 629