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34dc7c2f BB |
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 | /* | |
428870ff | 23 | * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. |
330d06f9 | 24 | * Copyright (c) 2011 by Delphix. All rights reserved. |
34dc7c2f BB |
25 | */ |
26 | ||
34dc7c2f BB |
27 | #include <sys/spa.h> |
28 | #include <sys/spa_impl.h> | |
29 | #include <sys/zap.h> | |
30 | #include <sys/dsl_synctask.h> | |
31 | #include <sys/dmu_tx.h> | |
32 | #include <sys/dmu_objset.h> | |
33 | #include <sys/utsname.h> | |
34 | #include <sys/cmn_err.h> | |
35 | #include <sys/sunddi.h> | |
428870ff | 36 | #include "zfs_comutil.h" |
34dc7c2f BB |
37 | #ifdef _KERNEL |
38 | #include <sys/zone.h> | |
39 | #endif | |
40 | ||
41 | /* | |
42 | * Routines to manage the on-disk history log. | |
43 | * | |
44 | * The history log is stored as a dmu object containing | |
45 | * <packed record length, record nvlist> tuples. | |
46 | * | |
47 | * Where "record nvlist" is a nvlist containing uint64_ts and strings, and | |
48 | * "packed record length" is the packed length of the "record nvlist" stored | |
49 | * as a little endian uint64_t. | |
50 | * | |
51 | * The log is implemented as a ring buffer, though the original creation | |
52 | * of the pool ('zpool create') is never overwritten. | |
53 | * | |
54 | * The history log is tracked as object 'spa_t::spa_history'. The bonus buffer | |
55 | * of 'spa_history' stores the offsets for logging/retrieving history as | |
56 | * 'spa_history_phys_t'. 'sh_pool_create_len' is the ending offset in bytes of | |
57 | * where the 'zpool create' record is stored. This allows us to never | |
58 | * overwrite the original creation of the pool. 'sh_phys_max_off' is the | |
59 | * physical ending offset in bytes of the log. This tells you the length of | |
60 | * the buffer. 'sh_eof' is the logical EOF (in bytes). Whenever a record | |
61 | * is added, 'sh_eof' is incremented by the the size of the record. | |
62 | * 'sh_eof' is never decremented. 'sh_bof' is the logical BOF (in bytes). | |
63 | * This is where the consumer should start reading from after reading in | |
64 | * the 'zpool create' portion of the log. | |
65 | * | |
66 | * 'sh_records_lost' keeps track of how many records have been overwritten | |
67 | * and permanently lost. | |
68 | */ | |
69 | ||
70 | /* convert a logical offset to physical */ | |
71 | static uint64_t | |
72 | spa_history_log_to_phys(uint64_t log_off, spa_history_phys_t *shpp) | |
73 | { | |
74 | uint64_t phys_len; | |
75 | ||
76 | phys_len = shpp->sh_phys_max_off - shpp->sh_pool_create_len; | |
77 | return ((log_off - shpp->sh_pool_create_len) % phys_len | |
78 | + shpp->sh_pool_create_len); | |
79 | } | |
80 | ||
81 | void | |
82 | spa_history_create_obj(spa_t *spa, dmu_tx_t *tx) | |
83 | { | |
84 | dmu_buf_t *dbp; | |
85 | spa_history_phys_t *shpp; | |
86 | objset_t *mos = spa->spa_meta_objset; | |
87 | ||
88 | ASSERT(spa->spa_history == 0); | |
89 | spa->spa_history = dmu_object_alloc(mos, DMU_OT_SPA_HISTORY, | |
90 | SPA_MAXBLOCKSIZE, DMU_OT_SPA_HISTORY_OFFSETS, | |
91 | sizeof (spa_history_phys_t), tx); | |
92 | ||
93 | VERIFY(zap_add(mos, DMU_POOL_DIRECTORY_OBJECT, | |
94 | DMU_POOL_HISTORY, sizeof (uint64_t), 1, | |
95 | &spa->spa_history, tx) == 0); | |
96 | ||
97 | VERIFY(0 == dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)); | |
98 | ASSERT(dbp->db_size >= sizeof (spa_history_phys_t)); | |
99 | ||
100 | shpp = dbp->db_data; | |
101 | dmu_buf_will_dirty(dbp, tx); | |
102 | ||
103 | /* | |
104 | * Figure out maximum size of history log. We set it at | |
330d06f9 | 105 | * 0.1% of pool size, with a max of 1G and min of 128KB. |
34dc7c2f | 106 | */ |
428870ff | 107 | shpp->sh_phys_max_off = |
330d06f9 MA |
108 | metaslab_class_get_dspace(spa_normal_class(spa)) / 1000; |
109 | shpp->sh_phys_max_off = MIN(shpp->sh_phys_max_off, 1<<30); | |
34dc7c2f BB |
110 | shpp->sh_phys_max_off = MAX(shpp->sh_phys_max_off, 128<<10); |
111 | ||
112 | dmu_buf_rele(dbp, FTAG); | |
113 | } | |
114 | ||
115 | /* | |
116 | * Change 'sh_bof' to the beginning of the next record. | |
117 | */ | |
118 | static int | |
119 | spa_history_advance_bof(spa_t *spa, spa_history_phys_t *shpp) | |
120 | { | |
121 | objset_t *mos = spa->spa_meta_objset; | |
122 | uint64_t firstread, reclen, phys_bof; | |
123 | char buf[sizeof (reclen)]; | |
124 | int err; | |
125 | ||
126 | phys_bof = spa_history_log_to_phys(shpp->sh_bof, shpp); | |
127 | firstread = MIN(sizeof (reclen), shpp->sh_phys_max_off - phys_bof); | |
128 | ||
129 | if ((err = dmu_read(mos, spa->spa_history, phys_bof, firstread, | |
9babb374 | 130 | buf, DMU_READ_PREFETCH)) != 0) |
34dc7c2f BB |
131 | return (err); |
132 | if (firstread != sizeof (reclen)) { | |
133 | if ((err = dmu_read(mos, spa->spa_history, | |
134 | shpp->sh_pool_create_len, sizeof (reclen) - firstread, | |
9babb374 | 135 | buf + firstread, DMU_READ_PREFETCH)) != 0) |
34dc7c2f BB |
136 | return (err); |
137 | } | |
138 | ||
139 | reclen = LE_64(*((uint64_t *)buf)); | |
140 | shpp->sh_bof += reclen + sizeof (reclen); | |
141 | shpp->sh_records_lost++; | |
142 | return (0); | |
143 | } | |
144 | ||
145 | static int | |
146 | spa_history_write(spa_t *spa, void *buf, uint64_t len, spa_history_phys_t *shpp, | |
147 | dmu_tx_t *tx) | |
148 | { | |
149 | uint64_t firstwrite, phys_eof; | |
150 | objset_t *mos = spa->spa_meta_objset; | |
151 | int err; | |
152 | ||
153 | ASSERT(MUTEX_HELD(&spa->spa_history_lock)); | |
154 | ||
155 | /* see if we need to reset logical BOF */ | |
156 | while (shpp->sh_phys_max_off - shpp->sh_pool_create_len - | |
157 | (shpp->sh_eof - shpp->sh_bof) <= len) { | |
158 | if ((err = spa_history_advance_bof(spa, shpp)) != 0) { | |
159 | return (err); | |
160 | } | |
161 | } | |
162 | ||
163 | phys_eof = spa_history_log_to_phys(shpp->sh_eof, shpp); | |
164 | firstwrite = MIN(len, shpp->sh_phys_max_off - phys_eof); | |
165 | shpp->sh_eof += len; | |
166 | dmu_write(mos, spa->spa_history, phys_eof, firstwrite, buf, tx); | |
167 | ||
168 | len -= firstwrite; | |
169 | if (len > 0) { | |
170 | /* write out the rest at the beginning of physical file */ | |
171 | dmu_write(mos, spa->spa_history, shpp->sh_pool_create_len, | |
172 | len, (char *)buf + firstwrite, tx); | |
173 | } | |
174 | ||
175 | return (0); | |
176 | } | |
177 | ||
178 | static char * | |
0bc8fd78 | 179 | spa_history_zone(void) |
34dc7c2f BB |
180 | { |
181 | #ifdef _KERNEL | |
c28b2279 BB |
182 | #ifdef HAVE_SPL |
183 | return ("linux"); | |
184 | #else | |
34dc7c2f | 185 | return (curproc->p_zone->zone_name); |
c28b2279 | 186 | #endif |
34dc7c2f BB |
187 | #else |
188 | return ("global"); | |
189 | #endif | |
190 | } | |
191 | ||
192 | /* | |
193 | * Write out a history event. | |
194 | */ | |
428870ff | 195 | /*ARGSUSED*/ |
34dc7c2f | 196 | static void |
428870ff | 197 | spa_history_log_sync(void *arg1, void *arg2, dmu_tx_t *tx) |
34dc7c2f BB |
198 | { |
199 | spa_t *spa = arg1; | |
200 | history_arg_t *hap = arg2; | |
201 | const char *history_str = hap->ha_history_str; | |
202 | objset_t *mos = spa->spa_meta_objset; | |
203 | dmu_buf_t *dbp; | |
204 | spa_history_phys_t *shpp; | |
205 | size_t reclen; | |
206 | uint64_t le_len; | |
207 | nvlist_t *nvrecord; | |
208 | char *record_packed = NULL; | |
209 | int ret; | |
210 | ||
211 | /* | |
212 | * If we have an older pool that doesn't have a command | |
213 | * history object, create it now. | |
214 | */ | |
215 | mutex_enter(&spa->spa_history_lock); | |
216 | if (!spa->spa_history) | |
217 | spa_history_create_obj(spa, tx); | |
218 | mutex_exit(&spa->spa_history_lock); | |
219 | ||
220 | /* | |
221 | * Get the offset of where we need to write via the bonus buffer. | |
222 | * Update the offset when the write completes. | |
223 | */ | |
224 | VERIFY(0 == dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)); | |
225 | shpp = dbp->db_data; | |
226 | ||
227 | dmu_buf_will_dirty(dbp, tx); | |
228 | ||
229 | #ifdef ZFS_DEBUG | |
230 | { | |
231 | dmu_object_info_t doi; | |
232 | dmu_object_info_from_db(dbp, &doi); | |
233 | ASSERT3U(doi.doi_bonus_type, ==, DMU_OT_SPA_HISTORY_OFFSETS); | |
234 | } | |
235 | #endif | |
236 | ||
237 | VERIFY(nvlist_alloc(&nvrecord, NV_UNIQUE_NAME, KM_SLEEP) == 0); | |
238 | VERIFY(nvlist_add_uint64(nvrecord, ZPOOL_HIST_TIME, | |
239 | gethrestime_sec()) == 0); | |
428870ff BB |
240 | VERIFY(nvlist_add_uint64(nvrecord, ZPOOL_HIST_WHO, hap->ha_uid) == 0); |
241 | if (hap->ha_zone != NULL) | |
34dc7c2f BB |
242 | VERIFY(nvlist_add_string(nvrecord, ZPOOL_HIST_ZONE, |
243 | hap->ha_zone) == 0); | |
244 | #ifdef _KERNEL | |
245 | VERIFY(nvlist_add_string(nvrecord, ZPOOL_HIST_HOST, | |
246 | utsname.nodename) == 0); | |
247 | #endif | |
248 | if (hap->ha_log_type == LOG_CMD_POOL_CREATE || | |
249 | hap->ha_log_type == LOG_CMD_NORMAL) { | |
250 | VERIFY(nvlist_add_string(nvrecord, ZPOOL_HIST_CMD, | |
251 | history_str) == 0); | |
428870ff BB |
252 | |
253 | zfs_dbgmsg("command: %s", history_str); | |
34dc7c2f BB |
254 | } else { |
255 | VERIFY(nvlist_add_uint64(nvrecord, ZPOOL_HIST_INT_EVENT, | |
256 | hap->ha_event) == 0); | |
257 | VERIFY(nvlist_add_uint64(nvrecord, ZPOOL_HIST_TXG, | |
258 | tx->tx_txg) == 0); | |
259 | VERIFY(nvlist_add_string(nvrecord, ZPOOL_HIST_INT_STR, | |
260 | history_str) == 0); | |
428870ff BB |
261 | |
262 | zfs_dbgmsg("internal %s pool:%s txg:%llu %s", | |
263 | zfs_history_event_names[hap->ha_event], spa_name(spa), | |
264 | (longlong_t)tx->tx_txg, history_str); | |
265 | ||
34dc7c2f BB |
266 | } |
267 | ||
268 | VERIFY(nvlist_size(nvrecord, &reclen, NV_ENCODE_XDR) == 0); | |
269 | record_packed = kmem_alloc(reclen, KM_SLEEP); | |
270 | ||
271 | VERIFY(nvlist_pack(nvrecord, &record_packed, &reclen, | |
272 | NV_ENCODE_XDR, KM_SLEEP) == 0); | |
273 | ||
274 | mutex_enter(&spa->spa_history_lock); | |
275 | if (hap->ha_log_type == LOG_CMD_POOL_CREATE) | |
276 | VERIFY(shpp->sh_eof == shpp->sh_pool_create_len); | |
277 | ||
278 | /* write out the packed length as little endian */ | |
279 | le_len = LE_64((uint64_t)reclen); | |
280 | ret = spa_history_write(spa, &le_len, sizeof (le_len), shpp, tx); | |
281 | if (!ret) | |
282 | ret = spa_history_write(spa, record_packed, reclen, shpp, tx); | |
283 | ||
284 | if (!ret && hap->ha_log_type == LOG_CMD_POOL_CREATE) { | |
285 | shpp->sh_pool_create_len += sizeof (le_len) + reclen; | |
286 | shpp->sh_bof = shpp->sh_pool_create_len; | |
287 | } | |
288 | ||
289 | mutex_exit(&spa->spa_history_lock); | |
290 | nvlist_free(nvrecord); | |
291 | kmem_free(record_packed, reclen); | |
292 | dmu_buf_rele(dbp, FTAG); | |
293 | ||
428870ff BB |
294 | strfree(hap->ha_history_str); |
295 | if (hap->ha_zone != NULL) | |
296 | strfree(hap->ha_zone); | |
297 | kmem_free(hap, sizeof (history_arg_t)); | |
34dc7c2f BB |
298 | } |
299 | ||
300 | /* | |
301 | * Write out a history event. | |
302 | */ | |
303 | int | |
304 | spa_history_log(spa_t *spa, const char *history_str, history_log_type_t what) | |
305 | { | |
428870ff BB |
306 | history_arg_t *ha; |
307 | int err = 0; | |
308 | dmu_tx_t *tx; | |
34dc7c2f BB |
309 | |
310 | ASSERT(what != LOG_INTERNAL); | |
311 | ||
428870ff BB |
312 | tx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); |
313 | err = dmu_tx_assign(tx, TXG_WAIT); | |
314 | if (err) { | |
315 | dmu_tx_abort(tx); | |
316 | return (err); | |
317 | } | |
318 | ||
319 | ha = kmem_alloc(sizeof (history_arg_t), KM_SLEEP); | |
320 | ha->ha_history_str = strdup(history_str); | |
321 | ha->ha_zone = strdup(spa_history_zone()); | |
322 | ha->ha_log_type = what; | |
323 | ha->ha_uid = crgetuid(CRED()); | |
324 | ||
325 | /* Kick this off asynchronously; errors are ignored. */ | |
326 | dsl_sync_task_do_nowait(spa_get_dsl(spa), NULL, | |
327 | spa_history_log_sync, spa, ha, 0, tx); | |
328 | dmu_tx_commit(tx); | |
329 | ||
330 | /* spa_history_log_sync will free ha and strings */ | |
331 | return (err); | |
34dc7c2f BB |
332 | } |
333 | ||
334 | /* | |
335 | * Read out the command history. | |
336 | */ | |
337 | int | |
338 | spa_history_get(spa_t *spa, uint64_t *offp, uint64_t *len, char *buf) | |
339 | { | |
340 | objset_t *mos = spa->spa_meta_objset; | |
341 | dmu_buf_t *dbp; | |
342 | uint64_t read_len, phys_read_off, phys_eof; | |
343 | uint64_t leftover = 0; | |
344 | spa_history_phys_t *shpp; | |
345 | int err; | |
346 | ||
347 | /* | |
348 | * If the command history doesn't exist (older pool), | |
349 | * that's ok, just return ENOENT. | |
350 | */ | |
351 | if (!spa->spa_history) | |
352 | return (ENOENT); | |
353 | ||
428870ff BB |
354 | /* |
355 | * The history is logged asynchronously, so when they request | |
356 | * the first chunk of history, make sure everything has been | |
357 | * synced to disk so that we get it. | |
358 | */ | |
359 | if (*offp == 0 && spa_writeable(spa)) | |
360 | txg_wait_synced(spa_get_dsl(spa), 0); | |
361 | ||
34dc7c2f BB |
362 | if ((err = dmu_bonus_hold(mos, spa->spa_history, FTAG, &dbp)) != 0) |
363 | return (err); | |
364 | shpp = dbp->db_data; | |
365 | ||
366 | #ifdef ZFS_DEBUG | |
367 | { | |
368 | dmu_object_info_t doi; | |
369 | dmu_object_info_from_db(dbp, &doi); | |
370 | ASSERT3U(doi.doi_bonus_type, ==, DMU_OT_SPA_HISTORY_OFFSETS); | |
371 | } | |
372 | #endif | |
373 | ||
374 | mutex_enter(&spa->spa_history_lock); | |
375 | phys_eof = spa_history_log_to_phys(shpp->sh_eof, shpp); | |
376 | ||
377 | if (*offp < shpp->sh_pool_create_len) { | |
378 | /* read in just the zpool create history */ | |
379 | phys_read_off = *offp; | |
380 | read_len = MIN(*len, shpp->sh_pool_create_len - | |
381 | phys_read_off); | |
382 | } else { | |
383 | /* | |
384 | * Need to reset passed in offset to BOF if the passed in | |
385 | * offset has since been overwritten. | |
386 | */ | |
387 | *offp = MAX(*offp, shpp->sh_bof); | |
388 | phys_read_off = spa_history_log_to_phys(*offp, shpp); | |
389 | ||
390 | /* | |
391 | * Read up to the minimum of what the user passed down or | |
392 | * the EOF (physical or logical). If we hit physical EOF, | |
393 | * use 'leftover' to read from the physical BOF. | |
394 | */ | |
395 | if (phys_read_off <= phys_eof) { | |
396 | read_len = MIN(*len, phys_eof - phys_read_off); | |
397 | } else { | |
398 | read_len = MIN(*len, | |
399 | shpp->sh_phys_max_off - phys_read_off); | |
400 | if (phys_read_off + *len > shpp->sh_phys_max_off) { | |
401 | leftover = MIN(*len - read_len, | |
402 | phys_eof - shpp->sh_pool_create_len); | |
403 | } | |
404 | } | |
405 | } | |
406 | ||
407 | /* offset for consumer to use next */ | |
408 | *offp += read_len + leftover; | |
409 | ||
410 | /* tell the consumer how much you actually read */ | |
411 | *len = read_len + leftover; | |
412 | ||
413 | if (read_len == 0) { | |
414 | mutex_exit(&spa->spa_history_lock); | |
415 | dmu_buf_rele(dbp, FTAG); | |
416 | return (0); | |
417 | } | |
418 | ||
9babb374 BB |
419 | err = dmu_read(mos, spa->spa_history, phys_read_off, read_len, buf, |
420 | DMU_READ_PREFETCH); | |
34dc7c2f BB |
421 | if (leftover && err == 0) { |
422 | err = dmu_read(mos, spa->spa_history, shpp->sh_pool_create_len, | |
9babb374 | 423 | leftover, buf + read_len, DMU_READ_PREFETCH); |
34dc7c2f BB |
424 | } |
425 | mutex_exit(&spa->spa_history_lock); | |
426 | ||
427 | dmu_buf_rele(dbp, FTAG); | |
428 | return (err); | |
429 | } | |
430 | ||
45d1cae3 BB |
431 | static void |
432 | log_internal(history_internal_events_t event, spa_t *spa, | |
428870ff | 433 | dmu_tx_t *tx, const char *fmt, va_list adx) |
34dc7c2f | 434 | { |
428870ff | 435 | history_arg_t *ha; |
00b46022 | 436 | va_list adx_copy; |
34dc7c2f | 437 | |
b128c09f BB |
438 | /* |
439 | * If this is part of creating a pool, not everything is | |
440 | * initialized yet, so don't bother logging the internal events. | |
441 | */ | |
442 | if (tx->tx_txg == TXG_INITIAL) | |
443 | return; | |
444 | ||
428870ff | 445 | ha = kmem_alloc(sizeof (history_arg_t), KM_SLEEP); |
00b46022 BB |
446 | va_copy(adx_copy, adx); |
447 | ha->ha_history_str = kmem_vasprintf(fmt, adx_copy); | |
448 | va_end(adx_copy); | |
428870ff BB |
449 | ha->ha_log_type = LOG_INTERNAL; |
450 | ha->ha_event = event; | |
451 | ha->ha_zone = NULL; | |
452 | ha->ha_uid = 0; | |
34dc7c2f BB |
453 | |
454 | if (dmu_tx_is_syncing(tx)) { | |
428870ff | 455 | spa_history_log_sync(spa, ha, tx); |
34dc7c2f BB |
456 | } else { |
457 | dsl_sync_task_do_nowait(spa_get_dsl(spa), NULL, | |
428870ff | 458 | spa_history_log_sync, spa, ha, 0, tx); |
34dc7c2f | 459 | } |
428870ff | 460 | /* spa_history_log_sync() will free ha and strings */ |
34dc7c2f | 461 | } |
45d1cae3 BB |
462 | |
463 | void | |
428870ff BB |
464 | spa_history_log_internal(history_internal_events_t event, spa_t *spa, |
465 | dmu_tx_t *tx, const char *fmt, ...) | |
45d1cae3 BB |
466 | { |
467 | dmu_tx_t *htx = tx; | |
468 | va_list adx; | |
469 | ||
470 | /* create a tx if we didn't get one */ | |
471 | if (tx == NULL) { | |
472 | htx = dmu_tx_create_dd(spa_get_dsl(spa)->dp_mos_dir); | |
473 | if (dmu_tx_assign(htx, TXG_WAIT) != 0) { | |
474 | dmu_tx_abort(htx); | |
475 | return; | |
476 | } | |
477 | } | |
478 | ||
479 | va_start(adx, fmt); | |
428870ff | 480 | log_internal(event, spa, htx, fmt, adx); |
45d1cae3 BB |
481 | va_end(adx); |
482 | ||
483 | /* if we didn't get a tx from the caller, commit the one we made */ | |
484 | if (tx == NULL) | |
485 | dmu_tx_commit(htx); | |
486 | } | |
487 | ||
488 | void | |
489 | spa_history_log_version(spa_t *spa, history_internal_events_t event) | |
490 | { | |
491 | #ifdef _KERNEL | |
492 | uint64_t current_vers = spa_version(spa); | |
493 | ||
494 | if (current_vers >= SPA_VERSION_ZPOOL_HISTORY) { | |
428870ff | 495 | spa_history_log_internal(event, spa, NULL, |
45d1cae3 BB |
496 | "pool spa %llu; zfs spa %llu; zpl %d; uts %s %s %s %s", |
497 | (u_longlong_t)current_vers, SPA_VERSION, ZPL_VERSION, | |
498 | utsname.nodename, utsname.release, utsname.version, | |
499 | utsname.machine); | |
500 | } | |
501 | cmn_err(CE_CONT, "!%s version %llu pool %s using %llu", | |
502 | event == LOG_POOL_IMPORT ? "imported" : | |
503 | event == LOG_POOL_CREATE ? "created" : "accessed", | |
504 | (u_longlong_t)current_vers, spa_name(spa), SPA_VERSION); | |
505 | #endif | |
506 | } | |
c28b2279 BB |
507 | |
508 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
509 | EXPORT_SYMBOL(spa_history_create_obj); | |
510 | EXPORT_SYMBOL(spa_history_get); | |
511 | EXPORT_SYMBOL(spa_history_log); | |
512 | EXPORT_SYMBOL(spa_history_log_internal); | |
513 | EXPORT_SYMBOL(spa_history_log_version); | |
514 | #endif |