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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 | */ | |
9b7b9cd3 | 21 | |
34dc7c2f | 22 | /* |
428870ff | 23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
ba67d821 | 24 | * Copyright (c) 2012, 2020 by Delphix. All rights reserved. |
3a17a7a9 | 25 | * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. |
788eb90c | 26 | * Copyright (c) 2013, Joyent, Inc. All rights reserved. |
0c66c32d | 27 | * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. |
9c43027b | 28 | * Copyright (c) 2015, STRATO AG, Inc. All rights reserved. |
a0bd735a | 29 | * Copyright (c) 2016 Actifio, Inc. All rights reserved. |
9b7b9cd3 | 30 | * Copyright 2017 Nexenta Systems, Inc. |
c0daec32 | 31 | * Copyright (c) 2017 Open-E, Inc. All Rights Reserved. |
d8d418ff | 32 | * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved. |
10b3c7f5 MN |
33 | * Copyright (c) 2019, Klara Inc. |
34 | * Copyright (c) 2019, Allan Jude | |
34dc7c2f BB |
35 | */ |
36 | ||
428870ff BB |
37 | /* Portions Copyright 2010 Robert Milkowski */ |
38 | ||
34dc7c2f BB |
39 | #include <sys/cred.h> |
40 | #include <sys/zfs_context.h> | |
41 | #include <sys/dmu_objset.h> | |
42 | #include <sys/dsl_dir.h> | |
43 | #include <sys/dsl_dataset.h> | |
44 | #include <sys/dsl_prop.h> | |
45 | #include <sys/dsl_pool.h> | |
46 | #include <sys/dsl_synctask.h> | |
47 | #include <sys/dsl_deleg.h> | |
48 | #include <sys/dnode.h> | |
49 | #include <sys/dbuf.h> | |
50 | #include <sys/zvol.h> | |
51 | #include <sys/dmu_tx.h> | |
34dc7c2f BB |
52 | #include <sys/zap.h> |
53 | #include <sys/zil.h> | |
54 | #include <sys/dmu_impl.h> | |
55 | #include <sys/zfs_ioctl.h> | |
428870ff | 56 | #include <sys/sa.h> |
572e2857 | 57 | #include <sys/zfs_onexit.h> |
13fe0198 | 58 | #include <sys/dsl_destroy.h> |
9c43027b | 59 | #include <sys/vdev.h> |
a1d477c2 | 60 | #include <sys/zfeature.h> |
f74b821a | 61 | #include <sys/policy.h> |
1de321e6 | 62 | #include <sys/spa_impl.h> |
03916905 | 63 | #include <sys/dmu_recv.h> |
9c5167d1 | 64 | #include <sys/zfs_project.h> |
a7ed98d8 | 65 | #include "zfs_namecheck.h" |
c9d62d13 GA |
66 | #include <sys/vdev_impl.h> |
67 | #include <sys/arc.h> | |
572e2857 BB |
68 | |
69 | /* | |
70 | * Needed to close a window in dnode_move() that allows the objset to be freed | |
71 | * before it can be safely accessed. | |
72 | */ | |
73 | krwlock_t os_lock; | |
74 | ||
9c43027b | 75 | /* |
4e33ba4c | 76 | * Tunable to overwrite the maximum number of threads for the parallelization |
9c43027b AJ |
77 | * of dmu_objset_find_dp, needed to speed up the import of pools with many |
78 | * datasets. | |
79 | * Default is 4 times the number of leaf vdevs. | |
80 | */ | |
18168da7 | 81 | static const int dmu_find_threads = 0; |
9c43027b | 82 | |
68cbd56e NB |
83 | /* |
84 | * Backfill lower metadnode objects after this many have been freed. | |
85 | * Backfilling negatively impacts object creation rates, so only do it | |
86 | * if there are enough holes to fill. | |
87 | */ | |
18168da7 | 88 | static const int dmu_rescan_dnode_threshold = 1 << DN_MAX_INDBLKSHIFT; |
68cbd56e | 89 | |
18168da7 | 90 | static const char *upgrade_tag = "upgrade_tag"; |
c0daec32 | 91 | |
9c43027b AJ |
92 | static void dmu_objset_find_dp_cb(void *arg); |
93 | ||
1de321e6 JX |
94 | static void dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb); |
95 | static void dmu_objset_upgrade_stop(objset_t *os); | |
96 | ||
572e2857 BB |
97 | void |
98 | dmu_objset_init(void) | |
99 | { | |
100 | rw_init(&os_lock, NULL, RW_DEFAULT, NULL); | |
101 | } | |
102 | ||
103 | void | |
104 | dmu_objset_fini(void) | |
105 | { | |
106 | rw_destroy(&os_lock); | |
107 | } | |
34dc7c2f BB |
108 | |
109 | spa_t * | |
110 | dmu_objset_spa(objset_t *os) | |
111 | { | |
428870ff | 112 | return (os->os_spa); |
34dc7c2f BB |
113 | } |
114 | ||
115 | zilog_t * | |
116 | dmu_objset_zil(objset_t *os) | |
117 | { | |
428870ff | 118 | return (os->os_zil); |
34dc7c2f BB |
119 | } |
120 | ||
121 | dsl_pool_t * | |
122 | dmu_objset_pool(objset_t *os) | |
123 | { | |
124 | dsl_dataset_t *ds; | |
125 | ||
428870ff | 126 | if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) |
34dc7c2f BB |
127 | return (ds->ds_dir->dd_pool); |
128 | else | |
428870ff | 129 | return (spa_get_dsl(os->os_spa)); |
34dc7c2f BB |
130 | } |
131 | ||
132 | dsl_dataset_t * | |
133 | dmu_objset_ds(objset_t *os) | |
134 | { | |
428870ff | 135 | return (os->os_dsl_dataset); |
34dc7c2f BB |
136 | } |
137 | ||
138 | dmu_objset_type_t | |
139 | dmu_objset_type(objset_t *os) | |
140 | { | |
428870ff | 141 | return (os->os_phys->os_type); |
34dc7c2f BB |
142 | } |
143 | ||
144 | void | |
145 | dmu_objset_name(objset_t *os, char *buf) | |
146 | { | |
428870ff | 147 | dsl_dataset_name(os->os_dsl_dataset, buf); |
34dc7c2f BB |
148 | } |
149 | ||
150 | uint64_t | |
151 | dmu_objset_id(objset_t *os) | |
152 | { | |
428870ff | 153 | dsl_dataset_t *ds = os->os_dsl_dataset; |
34dc7c2f BB |
154 | |
155 | return (ds ? ds->ds_object : 0); | |
156 | } | |
157 | ||
50c957f7 NB |
158 | uint64_t |
159 | dmu_objset_dnodesize(objset_t *os) | |
160 | { | |
161 | return (os->os_dnodesize); | |
162 | } | |
163 | ||
faf0f58c | 164 | zfs_sync_type_t |
428870ff BB |
165 | dmu_objset_syncprop(objset_t *os) |
166 | { | |
167 | return (os->os_sync); | |
168 | } | |
169 | ||
faf0f58c | 170 | zfs_logbias_op_t |
428870ff BB |
171 | dmu_objset_logbias(objset_t *os) |
172 | { | |
173 | return (os->os_logbias); | |
174 | } | |
175 | ||
34dc7c2f BB |
176 | static void |
177 | checksum_changed_cb(void *arg, uint64_t newval) | |
178 | { | |
428870ff | 179 | objset_t *os = arg; |
34dc7c2f BB |
180 | |
181 | /* | |
182 | * Inheritance should have been done by now. | |
183 | */ | |
184 | ASSERT(newval != ZIO_CHECKSUM_INHERIT); | |
185 | ||
428870ff | 186 | os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); |
34dc7c2f BB |
187 | } |
188 | ||
189 | static void | |
190 | compression_changed_cb(void *arg, uint64_t newval) | |
191 | { | |
428870ff | 192 | objset_t *os = arg; |
34dc7c2f BB |
193 | |
194 | /* | |
195 | * Inheritance and range checking should have been done by now. | |
196 | */ | |
197 | ASSERT(newval != ZIO_COMPRESS_INHERIT); | |
198 | ||
10b3c7f5 MN |
199 | os->os_compress = zio_compress_select(os->os_spa, |
200 | ZIO_COMPRESS_ALGO(newval), ZIO_COMPRESS_ON); | |
201 | os->os_complevel = zio_complevel_select(os->os_spa, os->os_compress, | |
202 | ZIO_COMPRESS_LEVEL(newval), ZIO_COMPLEVEL_DEFAULT); | |
34dc7c2f BB |
203 | } |
204 | ||
205 | static void | |
206 | copies_changed_cb(void *arg, uint64_t newval) | |
207 | { | |
428870ff | 208 | objset_t *os = arg; |
34dc7c2f BB |
209 | |
210 | /* | |
211 | * Inheritance and range checking should have been done by now. | |
212 | */ | |
213 | ASSERT(newval > 0); | |
428870ff | 214 | ASSERT(newval <= spa_max_replication(os->os_spa)); |
34dc7c2f | 215 | |
428870ff BB |
216 | os->os_copies = newval; |
217 | } | |
218 | ||
219 | static void | |
220 | dedup_changed_cb(void *arg, uint64_t newval) | |
221 | { | |
222 | objset_t *os = arg; | |
223 | spa_t *spa = os->os_spa; | |
224 | enum zio_checksum checksum; | |
225 | ||
226 | /* | |
227 | * Inheritance should have been done by now. | |
228 | */ | |
229 | ASSERT(newval != ZIO_CHECKSUM_INHERIT); | |
230 | ||
231 | checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); | |
232 | ||
233 | os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; | |
234 | os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); | |
34dc7c2f BB |
235 | } |
236 | ||
b128c09f BB |
237 | static void |
238 | primary_cache_changed_cb(void *arg, uint64_t newval) | |
239 | { | |
428870ff | 240 | objset_t *os = arg; |
b128c09f BB |
241 | |
242 | /* | |
243 | * Inheritance and range checking should have been done by now. | |
244 | */ | |
245 | ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || | |
246 | newval == ZFS_CACHE_METADATA); | |
247 | ||
428870ff | 248 | os->os_primary_cache = newval; |
b128c09f BB |
249 | } |
250 | ||
251 | static void | |
252 | secondary_cache_changed_cb(void *arg, uint64_t newval) | |
253 | { | |
428870ff | 254 | objset_t *os = arg; |
b128c09f BB |
255 | |
256 | /* | |
257 | * Inheritance and range checking should have been done by now. | |
258 | */ | |
259 | ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || | |
260 | newval == ZFS_CACHE_METADATA); | |
261 | ||
428870ff BB |
262 | os->os_secondary_cache = newval; |
263 | } | |
264 | ||
265 | static void | |
266 | sync_changed_cb(void *arg, uint64_t newval) | |
267 | { | |
268 | objset_t *os = arg; | |
269 | ||
270 | /* | |
271 | * Inheritance and range checking should have been done by now. | |
272 | */ | |
273 | ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS || | |
274 | newval == ZFS_SYNC_DISABLED); | |
275 | ||
276 | os->os_sync = newval; | |
277 | if (os->os_zil) | |
278 | zil_set_sync(os->os_zil, newval); | |
279 | } | |
280 | ||
faf0f58c MA |
281 | static void |
282 | redundant_metadata_changed_cb(void *arg, uint64_t newval) | |
283 | { | |
284 | objset_t *os = arg; | |
285 | ||
286 | /* | |
287 | * Inheritance and range checking should have been done by now. | |
288 | */ | |
289 | ASSERT(newval == ZFS_REDUNDANT_METADATA_ALL || | |
290 | newval == ZFS_REDUNDANT_METADATA_MOST); | |
291 | ||
292 | os->os_redundant_metadata = newval; | |
293 | } | |
294 | ||
50c957f7 NB |
295 | static void |
296 | dnodesize_changed_cb(void *arg, uint64_t newval) | |
297 | { | |
298 | objset_t *os = arg; | |
299 | ||
300 | switch (newval) { | |
301 | case ZFS_DNSIZE_LEGACY: | |
302 | os->os_dnodesize = DNODE_MIN_SIZE; | |
303 | break; | |
304 | case ZFS_DNSIZE_AUTO: | |
305 | /* | |
306 | * Choose a dnode size that will work well for most | |
307 | * workloads if the user specified "auto". Future code | |
308 | * improvements could dynamically select a dnode size | |
309 | * based on observed workload patterns. | |
310 | */ | |
311 | os->os_dnodesize = DNODE_MIN_SIZE * 2; | |
312 | break; | |
313 | case ZFS_DNSIZE_1K: | |
314 | case ZFS_DNSIZE_2K: | |
315 | case ZFS_DNSIZE_4K: | |
316 | case ZFS_DNSIZE_8K: | |
317 | case ZFS_DNSIZE_16K: | |
318 | os->os_dnodesize = newval; | |
319 | break; | |
320 | } | |
321 | } | |
322 | ||
cc99f275 DB |
323 | static void |
324 | smallblk_changed_cb(void *arg, uint64_t newval) | |
325 | { | |
326 | objset_t *os = arg; | |
327 | ||
328 | /* | |
329 | * Inheritance and range checking should have been done by now. | |
330 | */ | |
5aa69a57 | 331 | ASSERT(newval <= SPA_MAXBLOCKSIZE); |
cc99f275 DB |
332 | ASSERT(ISP2(newval)); |
333 | ||
334 | os->os_zpl_special_smallblock = newval; | |
335 | } | |
336 | ||
428870ff BB |
337 | static void |
338 | logbias_changed_cb(void *arg, uint64_t newval) | |
339 | { | |
340 | objset_t *os = arg; | |
341 | ||
342 | ASSERT(newval == ZFS_LOGBIAS_LATENCY || | |
343 | newval == ZFS_LOGBIAS_THROUGHPUT); | |
344 | os->os_logbias = newval; | |
345 | if (os->os_zil) | |
346 | zil_set_logbias(os->os_zil, newval); | |
b128c09f BB |
347 | } |
348 | ||
f1512ee6 MA |
349 | static void |
350 | recordsize_changed_cb(void *arg, uint64_t newval) | |
351 | { | |
352 | objset_t *os = arg; | |
353 | ||
354 | os->os_recordsize = newval; | |
355 | } | |
356 | ||
34dc7c2f BB |
357 | void |
358 | dmu_objset_byteswap(void *buf, size_t size) | |
359 | { | |
360 | objset_phys_t *osp = buf; | |
361 | ||
9c5167d1 NF |
362 | ASSERT(size == OBJSET_PHYS_SIZE_V1 || size == OBJSET_PHYS_SIZE_V2 || |
363 | size == sizeof (objset_phys_t)); | |
34dc7c2f BB |
364 | dnode_byteswap(&osp->os_meta_dnode); |
365 | byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); | |
366 | osp->os_type = BSWAP_64(osp->os_type); | |
9babb374 | 367 | osp->os_flags = BSWAP_64(osp->os_flags); |
9c5167d1 | 368 | if (size >= OBJSET_PHYS_SIZE_V2) { |
9babb374 BB |
369 | dnode_byteswap(&osp->os_userused_dnode); |
370 | dnode_byteswap(&osp->os_groupused_dnode); | |
9c5167d1 NF |
371 | if (size >= sizeof (objset_phys_t)) |
372 | dnode_byteswap(&osp->os_projectused_dnode); | |
9babb374 | 373 | } |
34dc7c2f BB |
374 | } |
375 | ||
64fc7762 MA |
376 | /* |
377 | * The hash is a CRC-based hash of the objset_t pointer and the object number. | |
378 | */ | |
379 | static uint64_t | |
380 | dnode_hash(const objset_t *os, uint64_t obj) | |
381 | { | |
382 | uintptr_t osv = (uintptr_t)os; | |
383 | uint64_t crc = -1ULL; | |
384 | ||
385 | ASSERT(zfs_crc64_table[128] == ZFS_CRC64_POLY); | |
386 | /* | |
387 | * The low 6 bits of the pointer don't have much entropy, because | |
388 | * the objset_t is larger than 2^6 bytes long. | |
389 | */ | |
390 | crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (osv >> 6)) & 0xFF]; | |
391 | crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 0)) & 0xFF]; | |
392 | crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 8)) & 0xFF]; | |
393 | crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 16)) & 0xFF]; | |
394 | ||
395 | crc ^= (osv>>14) ^ (obj>>24); | |
396 | ||
397 | return (crc); | |
398 | } | |
399 | ||
65c7cc49 | 400 | static unsigned int |
64fc7762 MA |
401 | dnode_multilist_index_func(multilist_t *ml, void *obj) |
402 | { | |
403 | dnode_t *dn = obj; | |
5b7053a9 AM |
404 | |
405 | /* | |
406 | * The low order bits of the hash value are thought to be | |
407 | * distributed evenly. Otherwise, in the case that the multilist | |
408 | * has a power of two number of sublists, each sublists' usage | |
409 | * would not be evenly distributed. In this context full 64bit | |
410 | * division would be a waste of time, so limit it to 32 bits. | |
411 | */ | |
412 | return ((unsigned int)dnode_hash(dn->dn_objset, dn->dn_object) % | |
64fc7762 MA |
413 | multilist_get_num_sublists(ml)); |
414 | } | |
415 | ||
c9d62d13 GA |
416 | static inline boolean_t |
417 | dmu_os_is_l2cacheable(objset_t *os) | |
418 | { | |
419 | vdev_t *vd = NULL; | |
420 | zfs_cache_type_t cache = os->os_secondary_cache; | |
421 | blkptr_t *bp = os->os_rootbp; | |
422 | ||
423 | if (bp != NULL && !BP_IS_HOLE(bp)) { | |
424 | uint64_t vdev = DVA_GET_VDEV(bp->blk_dva); | |
425 | vdev_t *rvd = os->os_spa->spa_root_vdev; | |
426 | ||
427 | if (vdev < rvd->vdev_children) | |
428 | vd = rvd->vdev_child[vdev]; | |
429 | ||
430 | if (cache == ZFS_CACHE_ALL || cache == ZFS_CACHE_METADATA) { | |
431 | if (vd == NULL) | |
432 | return (B_TRUE); | |
433 | ||
434 | if ((vd->vdev_alloc_bias != VDEV_BIAS_SPECIAL && | |
435 | vd->vdev_alloc_bias != VDEV_BIAS_DEDUP) || | |
436 | l2arc_exclude_special == 0) | |
437 | return (B_TRUE); | |
438 | } | |
439 | } | |
440 | ||
441 | return (B_FALSE); | |
442 | } | |
443 | ||
a1d477c2 MA |
444 | /* |
445 | * Instantiates the objset_t in-memory structure corresponding to the | |
446 | * objset_phys_t that's pointed to by the specified blkptr_t. | |
447 | */ | |
34dc7c2f BB |
448 | int |
449 | dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, | |
428870ff | 450 | objset_t **osp) |
34dc7c2f | 451 | { |
428870ff | 452 | objset_t *os; |
b128c09f | 453 | int i, err; |
34dc7c2f BB |
454 | |
455 | ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); | |
30af21b0 | 456 | ASSERT(!BP_IS_REDACTED(bp)); |
34dc7c2f | 457 | |
0fdd6106 MA |
458 | /* |
459 | * We need the pool config lock to get properties. | |
460 | */ | |
461 | ASSERT(ds == NULL || dsl_pool_config_held(ds->ds_dir->dd_pool)); | |
462 | ||
a1d477c2 MA |
463 | /* |
464 | * The $ORIGIN dataset (if it exists) doesn't have an associated | |
465 | * objset, so there's no reason to open it. The $ORIGIN dataset | |
466 | * will not exist on pools older than SPA_VERSION_ORIGIN. | |
467 | */ | |
468 | if (ds != NULL && spa_get_dsl(spa) != NULL && | |
469 | spa_get_dsl(spa)->dp_origin_snap != NULL) { | |
470 | ASSERT3P(ds->ds_dir, !=, | |
471 | spa_get_dsl(spa)->dp_origin_snap->ds_dir); | |
472 | } | |
473 | ||
79c76d5b | 474 | os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); |
428870ff BB |
475 | os->os_dsl_dataset = ds; |
476 | os->os_spa = spa; | |
477 | os->os_rootbp = bp; | |
478 | if (!BP_IS_HOLE(os->os_rootbp)) { | |
2a432414 | 479 | arc_flags_t aflags = ARC_FLAG_WAIT; |
5dbd68a3 | 480 | zbookmark_phys_t zb; |
9c5167d1 | 481 | int size; |
b5256303 | 482 | enum zio_flag zio_flags = ZIO_FLAG_CANFAIL; |
428870ff BB |
483 | SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, |
484 | ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); | |
485 | ||
c9d62d13 | 486 | if (dmu_os_is_l2cacheable(os)) |
2a432414 | 487 | aflags |= ARC_FLAG_L2CACHE; |
34dc7c2f | 488 | |
b5256303 TC |
489 | if (ds != NULL && ds->ds_dir->dd_crypto_obj != 0) { |
490 | ASSERT3U(BP_GET_COMPRESS(bp), ==, ZIO_COMPRESS_OFF); | |
491 | ASSERT(BP_IS_AUTHENTICATED(bp)); | |
492 | zio_flags |= ZIO_FLAG_RAW; | |
493 | } | |
494 | ||
428870ff | 495 | dprintf_bp(os->os_rootbp, "reading %s", ""); |
294f6806 | 496 | err = arc_read(NULL, spa, os->os_rootbp, |
428870ff | 497 | arc_getbuf_func, &os->os_phys_buf, |
b5256303 | 498 | ZIO_PRIORITY_SYNC_READ, zio_flags, &aflags, &zb); |
13fe0198 | 499 | if (err != 0) { |
428870ff | 500 | kmem_free(os, sizeof (objset_t)); |
b128c09f BB |
501 | /* convert checksum errors into IO errors */ |
502 | if (err == ECKSUM) | |
2e528b49 | 503 | err = SET_ERROR(EIO); |
34dc7c2f BB |
504 | return (err); |
505 | } | |
9babb374 | 506 | |
9c5167d1 NF |
507 | if (spa_version(spa) < SPA_VERSION_USERSPACE) |
508 | size = OBJSET_PHYS_SIZE_V1; | |
509 | else if (!spa_feature_is_enabled(spa, | |
510 | SPA_FEATURE_PROJECT_QUOTA)) | |
511 | size = OBJSET_PHYS_SIZE_V2; | |
512 | else | |
513 | size = sizeof (objset_phys_t); | |
514 | ||
9babb374 | 515 | /* Increase the blocksize if we are permitted. */ |
9c5167d1 | 516 | if (arc_buf_size(os->os_phys_buf) < size) { |
2aa34383 | 517 | arc_buf_t *buf = arc_alloc_buf(spa, &os->os_phys_buf, |
9c5167d1 | 518 | ARC_BUFC_METADATA, size); |
861166b0 AZ |
519 | memset(buf->b_data, 0, size); |
520 | memcpy(buf->b_data, os->os_phys_buf->b_data, | |
428870ff | 521 | arc_buf_size(os->os_phys_buf)); |
d3c2ae1c | 522 | arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf); |
428870ff | 523 | os->os_phys_buf = buf; |
9babb374 BB |
524 | } |
525 | ||
428870ff BB |
526 | os->os_phys = os->os_phys_buf->b_data; |
527 | os->os_flags = os->os_phys->os_flags; | |
34dc7c2f | 528 | } else { |
9babb374 | 529 | int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? |
9c5167d1 | 530 | sizeof (objset_phys_t) : OBJSET_PHYS_SIZE_V1; |
2aa34383 DK |
531 | os->os_phys_buf = arc_alloc_buf(spa, &os->os_phys_buf, |
532 | ARC_BUFC_METADATA, size); | |
428870ff | 533 | os->os_phys = os->os_phys_buf->b_data; |
861166b0 | 534 | memset(os->os_phys, 0, size); |
34dc7c2f | 535 | } |
2e5dc449 MA |
536 | /* |
537 | * These properties will be filled in by the logic in zfs_get_zplprop() | |
538 | * when they are queried for the first time. | |
539 | */ | |
540 | os->os_version = OBJSET_PROP_UNINITIALIZED; | |
541 | os->os_normalization = OBJSET_PROP_UNINITIALIZED; | |
542 | os->os_utf8only = OBJSET_PROP_UNINITIALIZED; | |
543 | os->os_casesensitivity = OBJSET_PROP_UNINITIALIZED; | |
34dc7c2f BB |
544 | |
545 | /* | |
546 | * Note: the changed_cb will be called once before the register | |
547 | * func returns, thus changing the checksum/compression from the | |
b128c09f BB |
548 | * default (fletcher2/off). Snapshots don't need to know about |
549 | * checksum/compression/copies. | |
34dc7c2f | 550 | */ |
9b67f605 | 551 | if (ds != NULL) { |
b5256303 TC |
552 | os->os_encrypted = (ds->ds_dir->dd_crypto_obj != 0); |
553 | ||
13fe0198 MA |
554 | err = dsl_prop_register(ds, |
555 | zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE), | |
428870ff | 556 | primary_cache_changed_cb, os); |
13fe0198 MA |
557 | if (err == 0) { |
558 | err = dsl_prop_register(ds, | |
559 | zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE), | |
428870ff | 560 | secondary_cache_changed_cb, os); |
13fe0198 | 561 | } |
0c66c32d | 562 | if (!ds->ds_is_snapshot) { |
13fe0198 MA |
563 | if (err == 0) { |
564 | err = dsl_prop_register(ds, | |
565 | zfs_prop_to_name(ZFS_PROP_CHECKSUM), | |
428870ff | 566 | checksum_changed_cb, os); |
13fe0198 MA |
567 | } |
568 | if (err == 0) { | |
569 | err = dsl_prop_register(ds, | |
570 | zfs_prop_to_name(ZFS_PROP_COMPRESSION), | |
428870ff | 571 | compression_changed_cb, os); |
13fe0198 MA |
572 | } |
573 | if (err == 0) { | |
574 | err = dsl_prop_register(ds, | |
575 | zfs_prop_to_name(ZFS_PROP_COPIES), | |
428870ff | 576 | copies_changed_cb, os); |
13fe0198 MA |
577 | } |
578 | if (err == 0) { | |
579 | err = dsl_prop_register(ds, | |
580 | zfs_prop_to_name(ZFS_PROP_DEDUP), | |
428870ff | 581 | dedup_changed_cb, os); |
13fe0198 MA |
582 | } |
583 | if (err == 0) { | |
584 | err = dsl_prop_register(ds, | |
585 | zfs_prop_to_name(ZFS_PROP_LOGBIAS), | |
428870ff | 586 | logbias_changed_cb, os); |
13fe0198 MA |
587 | } |
588 | if (err == 0) { | |
589 | err = dsl_prop_register(ds, | |
590 | zfs_prop_to_name(ZFS_PROP_SYNC), | |
428870ff | 591 | sync_changed_cb, os); |
13fe0198 | 592 | } |
faf0f58c MA |
593 | if (err == 0) { |
594 | err = dsl_prop_register(ds, | |
595 | zfs_prop_to_name( | |
596 | ZFS_PROP_REDUNDANT_METADATA), | |
597 | redundant_metadata_changed_cb, os); | |
598 | } | |
f1512ee6 MA |
599 | if (err == 0) { |
600 | err = dsl_prop_register(ds, | |
601 | zfs_prop_to_name(ZFS_PROP_RECORDSIZE), | |
602 | recordsize_changed_cb, os); | |
603 | } | |
50c957f7 NB |
604 | if (err == 0) { |
605 | err = dsl_prop_register(ds, | |
606 | zfs_prop_to_name(ZFS_PROP_DNODESIZE), | |
607 | dnodesize_changed_cb, os); | |
608 | } | |
cc99f275 DB |
609 | if (err == 0) { |
610 | err = dsl_prop_register(ds, | |
611 | zfs_prop_to_name( | |
612 | ZFS_PROP_SPECIAL_SMALL_BLOCKS), | |
613 | smallblk_changed_cb, os); | |
614 | } | |
b128c09f | 615 | } |
13fe0198 | 616 | if (err != 0) { |
d3c2ae1c | 617 | arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf); |
428870ff | 618 | kmem_free(os, sizeof (objset_t)); |
34dc7c2f BB |
619 | return (err); |
620 | } | |
9b67f605 | 621 | } else { |
34dc7c2f | 622 | /* It's the meta-objset. */ |
428870ff | 623 | os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; |
99197f03 | 624 | os->os_compress = ZIO_COMPRESS_ON; |
10b3c7f5 | 625 | os->os_complevel = ZIO_COMPLEVEL_DEFAULT; |
b5256303 | 626 | os->os_encrypted = B_FALSE; |
428870ff BB |
627 | os->os_copies = spa_max_replication(spa); |
628 | os->os_dedup_checksum = ZIO_CHECKSUM_OFF; | |
faf0f58c MA |
629 | os->os_dedup_verify = B_FALSE; |
630 | os->os_logbias = ZFS_LOGBIAS_LATENCY; | |
631 | os->os_sync = ZFS_SYNC_STANDARD; | |
428870ff BB |
632 | os->os_primary_cache = ZFS_CACHE_ALL; |
633 | os->os_secondary_cache = ZFS_CACHE_ALL; | |
50c957f7 | 634 | os->os_dnodesize = DNODE_MIN_SIZE; |
34dc7c2f BB |
635 | } |
636 | ||
0c66c32d | 637 | if (ds == NULL || !ds->ds_is_snapshot) |
572e2857 | 638 | os->os_zil_header = os->os_phys->os_zil_header; |
428870ff | 639 | os->os_zil = zil_alloc(os, &os->os_zil_header); |
34dc7c2f BB |
640 | |
641 | for (i = 0; i < TXG_SIZE; i++) { | |
ffdf019c | 642 | multilist_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), |
64fc7762 MA |
643 | offsetof(dnode_t, dn_dirty_link[i]), |
644 | dnode_multilist_index_func); | |
34dc7c2f | 645 | } |
428870ff | 646 | list_create(&os->os_dnodes, sizeof (dnode_t), |
34dc7c2f | 647 | offsetof(dnode_t, dn_link)); |
428870ff | 648 | list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), |
34dc7c2f BB |
649 | offsetof(dmu_buf_impl_t, db_link)); |
650 | ||
0c66c32d JG |
651 | list_link_init(&os->os_evicting_node); |
652 | ||
428870ff | 653 | mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); |
64fc7762 | 654 | mutex_init(&os->os_userused_lock, NULL, MUTEX_DEFAULT, NULL); |
428870ff BB |
655 | mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); |
656 | mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); | |
dbeb8796 MA |
657 | os->os_obj_next_percpu_len = boot_ncpus; |
658 | os->os_obj_next_percpu = kmem_zalloc(os->os_obj_next_percpu_len * | |
659 | sizeof (os->os_obj_next_percpu[0]), KM_SLEEP); | |
428870ff | 660 | |
0c66c32d JG |
661 | dnode_special_open(os, &os->os_phys->os_meta_dnode, |
662 | DMU_META_DNODE_OBJECT, &os->os_meta_dnode); | |
9c5167d1 | 663 | if (OBJSET_BUF_HAS_USERUSED(os->os_phys_buf)) { |
0c66c32d JG |
664 | dnode_special_open(os, &os->os_phys->os_userused_dnode, |
665 | DMU_USERUSED_OBJECT, &os->os_userused_dnode); | |
666 | dnode_special_open(os, &os->os_phys->os_groupused_dnode, | |
667 | DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode); | |
9c5167d1 NF |
668 | if (OBJSET_BUF_HAS_PROJECTUSED(os->os_phys_buf)) |
669 | dnode_special_open(os, | |
670 | &os->os_phys->os_projectused_dnode, | |
671 | DMU_PROJECTUSED_OBJECT, &os->os_projectused_dnode); | |
9babb374 | 672 | } |
34dc7c2f | 673 | |
1de321e6 JX |
674 | mutex_init(&os->os_upgrade_lock, NULL, MUTEX_DEFAULT, NULL); |
675 | ||
428870ff | 676 | *osp = os; |
34dc7c2f BB |
677 | return (0); |
678 | } | |
679 | ||
428870ff BB |
680 | int |
681 | dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) | |
34dc7c2f | 682 | { |
428870ff | 683 | int err = 0; |
34dc7c2f | 684 | |
47dfff3b | 685 | /* |
0fdd6106 MA |
686 | * We need the pool_config lock to manipulate the dsl_dataset_t. |
687 | * Even if the dataset is long-held, we need the pool_config lock | |
688 | * to open the objset, as it needs to get properties. | |
47dfff3b | 689 | */ |
0fdd6106 | 690 | ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool)); |
47dfff3b | 691 | |
34dc7c2f | 692 | mutex_enter(&ds->ds_opening_lock); |
9b67f605 MA |
693 | if (ds->ds_objset == NULL) { |
694 | objset_t *os; | |
cc9bb3e5 | 695 | rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); |
34dc7c2f | 696 | err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), |
9b67f605 | 697 | ds, dsl_dataset_get_blkptr(ds), &os); |
cc9bb3e5 | 698 | rrw_exit(&ds->ds_bp_rwlock, FTAG); |
9b67f605 MA |
699 | |
700 | if (err == 0) { | |
701 | mutex_enter(&ds->ds_lock); | |
702 | ASSERT(ds->ds_objset == NULL); | |
703 | ds->ds_objset = os; | |
704 | mutex_exit(&ds->ds_lock); | |
705 | } | |
34dc7c2f | 706 | } |
9b67f605 | 707 | *osp = ds->ds_objset; |
34dc7c2f | 708 | mutex_exit(&ds->ds_opening_lock); |
428870ff | 709 | return (err); |
34dc7c2f BB |
710 | } |
711 | ||
13fe0198 MA |
712 | /* |
713 | * Holds the pool while the objset is held. Therefore only one objset | |
714 | * can be held at a time. | |
715 | */ | |
34dc7c2f | 716 | int |
b5256303 TC |
717 | dmu_objset_hold_flags(const char *name, boolean_t decrypt, void *tag, |
718 | objset_t **osp) | |
34dc7c2f | 719 | { |
13fe0198 | 720 | dsl_pool_t *dp; |
428870ff | 721 | dsl_dataset_t *ds; |
34dc7c2f | 722 | int err; |
40ab927a | 723 | ds_hold_flags_t flags; |
34dc7c2f | 724 | |
40ab927a | 725 | flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; |
13fe0198 MA |
726 | err = dsl_pool_hold(name, tag, &dp); |
727 | if (err != 0) | |
728 | return (err); | |
b5256303 | 729 | err = dsl_dataset_hold_flags(dp, name, flags, tag, &ds); |
13fe0198 MA |
730 | if (err != 0) { |
731 | dsl_pool_rele(dp, tag); | |
428870ff | 732 | return (err); |
13fe0198 | 733 | } |
428870ff BB |
734 | |
735 | err = dmu_objset_from_ds(ds, osp); | |
13fe0198 | 736 | if (err != 0) { |
428870ff | 737 | dsl_dataset_rele(ds, tag); |
13fe0198 MA |
738 | dsl_pool_rele(dp, tag); |
739 | } | |
428870ff | 740 | |
34dc7c2f BB |
741 | return (err); |
742 | } | |
743 | ||
b5256303 TC |
744 | int |
745 | dmu_objset_hold(const char *name, void *tag, objset_t **osp) | |
746 | { | |
747 | return (dmu_objset_hold_flags(name, B_FALSE, tag, osp)); | |
748 | } | |
749 | ||
9c43027b AJ |
750 | static int |
751 | dmu_objset_own_impl(dsl_dataset_t *ds, dmu_objset_type_t type, | |
b5256303 | 752 | boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp) |
9c43027b | 753 | { |
14e4e3cb | 754 | (void) tag; |
9c43027b | 755 | |
14e4e3cb | 756 | int err = dmu_objset_from_ds(ds, osp); |
9c43027b | 757 | if (err != 0) { |
b5256303 | 758 | return (err); |
9c43027b | 759 | } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { |
9c43027b AJ |
760 | return (SET_ERROR(EINVAL)); |
761 | } else if (!readonly && dsl_dataset_is_snapshot(ds)) { | |
9c43027b | 762 | return (SET_ERROR(EROFS)); |
ae76f45c TC |
763 | } else if (!readonly && decrypt && |
764 | dsl_dir_incompatible_encryption_version(ds->ds_dir)) { | |
765 | return (SET_ERROR(EROFS)); | |
9c43027b | 766 | } |
b5256303 TC |
767 | |
768 | /* if we are decrypting, we can now check MACs in os->os_phys_buf */ | |
769 | if (decrypt && arc_is_unauthenticated((*osp)->os_phys_buf)) { | |
a2c2ed1b TC |
770 | zbookmark_phys_t zb; |
771 | ||
772 | SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT, | |
773 | ZB_ROOT_LEVEL, ZB_ROOT_BLKID); | |
b5256303 | 774 | err = arc_untransform((*osp)->os_phys_buf, (*osp)->os_spa, |
a2c2ed1b | 775 | &zb, B_FALSE); |
b5256303 TC |
776 | if (err != 0) |
777 | return (err); | |
778 | ||
779 | ASSERT0(arc_is_unauthenticated((*osp)->os_phys_buf)); | |
780 | } | |
781 | ||
782 | return (0); | |
9c43027b AJ |
783 | } |
784 | ||
13fe0198 MA |
785 | /* |
786 | * dsl_pool must not be held when this is called. | |
787 | * Upon successful return, there will be a longhold on the dataset, | |
788 | * and the dsl_pool will not be held. | |
789 | */ | |
34dc7c2f | 790 | int |
428870ff | 791 | dmu_objset_own(const char *name, dmu_objset_type_t type, |
b5256303 | 792 | boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp) |
34dc7c2f | 793 | { |
13fe0198 | 794 | dsl_pool_t *dp; |
34dc7c2f BB |
795 | dsl_dataset_t *ds; |
796 | int err; | |
40ab927a | 797 | ds_hold_flags_t flags; |
34dc7c2f | 798 | |
40ab927a | 799 | flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; |
13fe0198 MA |
800 | err = dsl_pool_hold(name, FTAG, &dp); |
801 | if (err != 0) | |
802 | return (err); | |
b5256303 | 803 | err = dsl_dataset_own(dp, name, flags, tag, &ds); |
13fe0198 MA |
804 | if (err != 0) { |
805 | dsl_pool_rele(dp, FTAG); | |
34dc7c2f | 806 | return (err); |
13fe0198 | 807 | } |
b5256303 TC |
808 | err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp); |
809 | if (err != 0) { | |
810 | dsl_dataset_disown(ds, flags, tag); | |
811 | dsl_pool_rele(dp, FTAG); | |
812 | return (err); | |
813 | } | |
814 | ||
163a8c28 TC |
815 | /* |
816 | * User accounting requires the dataset to be decrypted and rw. | |
817 | * We also don't begin user accounting during claiming to help | |
818 | * speed up pool import times and to keep this txg reserved | |
819 | * completely for recovery work. | |
820 | */ | |
4072f465 | 821 | if (!readonly && !dp->dp_spa->spa_claiming && |
822 | (ds->ds_dir->dd_crypto_obj == 0 || decrypt)) { | |
823 | if (dmu_objset_userobjspace_upgradable(*osp) || | |
824 | dmu_objset_projectquota_upgradable(*osp)) { | |
825 | dmu_objset_id_quota_upgrade(*osp); | |
826 | } else if (dmu_objset_userused_enabled(*osp)) { | |
827 | dmu_objset_userspace_upgrade(*osp); | |
828 | } | |
829 | } | |
1de321e6 | 830 | |
c0daec32 | 831 | dsl_pool_rele(dp, FTAG); |
b5256303 | 832 | return (0); |
34dc7c2f BB |
833 | } |
834 | ||
9c43027b AJ |
835 | int |
836 | dmu_objset_own_obj(dsl_pool_t *dp, uint64_t obj, dmu_objset_type_t type, | |
b5256303 | 837 | boolean_t readonly, boolean_t decrypt, void *tag, objset_t **osp) |
9c43027b AJ |
838 | { |
839 | dsl_dataset_t *ds; | |
840 | int err; | |
40ab927a | 841 | ds_hold_flags_t flags; |
9c43027b | 842 | |
40ab927a | 843 | flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; |
b5256303 | 844 | err = dsl_dataset_own_obj(dp, obj, flags, tag, &ds); |
9c43027b AJ |
845 | if (err != 0) |
846 | return (err); | |
847 | ||
b5256303 TC |
848 | err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp); |
849 | if (err != 0) { | |
850 | dsl_dataset_disown(ds, flags, tag); | |
851 | return (err); | |
852 | } | |
853 | ||
854 | return (0); | |
9c43027b AJ |
855 | } |
856 | ||
34dc7c2f | 857 | void |
b5256303 | 858 | dmu_objset_rele_flags(objset_t *os, boolean_t decrypt, void *tag) |
34dc7c2f | 859 | { |
40ab927a | 860 | ds_hold_flags_t flags; |
13fe0198 | 861 | dsl_pool_t *dp = dmu_objset_pool(os); |
40ab927a TS |
862 | |
863 | flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; | |
b5256303 | 864 | dsl_dataset_rele_flags(os->os_dsl_dataset, flags, tag); |
13fe0198 | 865 | dsl_pool_rele(dp, tag); |
428870ff | 866 | } |
b128c09f | 867 | |
b5256303 TC |
868 | void |
869 | dmu_objset_rele(objset_t *os, void *tag) | |
870 | { | |
871 | dmu_objset_rele_flags(os, B_FALSE, tag); | |
872 | } | |
873 | ||
831baf06 KW |
874 | /* |
875 | * When we are called, os MUST refer to an objset associated with a dataset | |
876 | * that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner | |
877 | * == tag. We will then release and reacquire ownership of the dataset while | |
878 | * holding the pool config_rwlock to avoid intervening namespace or ownership | |
879 | * changes may occur. | |
880 | * | |
881 | * This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to | |
882 | * release the hold on its dataset and acquire a new one on the dataset of the | |
883 | * same name so that it can be partially torn down and reconstructed. | |
884 | */ | |
885 | void | |
5e00213e AG |
886 | dmu_objset_refresh_ownership(dsl_dataset_t *ds, dsl_dataset_t **newds, |
887 | boolean_t decrypt, void *tag) | |
831baf06 KW |
888 | { |
889 | dsl_pool_t *dp; | |
eca7b760 | 890 | char name[ZFS_MAX_DATASET_NAME_LEN]; |
40ab927a | 891 | ds_hold_flags_t flags; |
831baf06 | 892 | |
40ab927a | 893 | flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; |
831baf06 KW |
894 | VERIFY3P(ds, !=, NULL); |
895 | VERIFY3P(ds->ds_owner, ==, tag); | |
896 | VERIFY(dsl_dataset_long_held(ds)); | |
897 | ||
898 | dsl_dataset_name(ds, name); | |
5e00213e | 899 | dp = ds->ds_dir->dd_pool; |
831baf06 | 900 | dsl_pool_config_enter(dp, FTAG); |
40ab927a TS |
901 | dsl_dataset_disown(ds, flags, tag); |
902 | VERIFY0(dsl_dataset_own(dp, name, flags, tag, newds)); | |
831baf06 KW |
903 | dsl_pool_config_exit(dp, FTAG); |
904 | } | |
905 | ||
428870ff | 906 | void |
b5256303 | 907 | dmu_objset_disown(objset_t *os, boolean_t decrypt, void *tag) |
428870ff | 908 | { |
40ab927a TS |
909 | ds_hold_flags_t flags; |
910 | ||
911 | flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE; | |
1de321e6 JX |
912 | /* |
913 | * Stop upgrading thread | |
914 | */ | |
915 | dmu_objset_upgrade_stop(os); | |
40ab927a | 916 | dsl_dataset_disown(os->os_dsl_dataset, flags, tag); |
34dc7c2f BB |
917 | } |
918 | ||
13fe0198 | 919 | void |
34dc7c2f BB |
920 | dmu_objset_evict_dbufs(objset_t *os) |
921 | { | |
0c66c32d | 922 | dnode_t *dn_marker; |
34dc7c2f BB |
923 | dnode_t *dn; |
924 | ||
0c66c32d | 925 | dn_marker = kmem_alloc(sizeof (dnode_t), KM_SLEEP); |
34dc7c2f | 926 | |
0c66c32d JG |
927 | mutex_enter(&os->os_lock); |
928 | dn = list_head(&os->os_dnodes); | |
929 | while (dn != NULL) { | |
930 | /* | |
931 | * Skip dnodes without holds. We have to do this dance | |
932 | * because dnode_add_ref() only works if there is already a | |
933 | * hold. If the dnode has no holds, then it has no dbufs. | |
934 | */ | |
935 | if (dnode_add_ref(dn, FTAG)) { | |
936 | list_insert_after(&os->os_dnodes, dn, dn_marker); | |
937 | mutex_exit(&os->os_lock); | |
34dc7c2f | 938 | |
0c66c32d JG |
939 | dnode_evict_dbufs(dn); |
940 | dnode_rele(dn, FTAG); | |
34dc7c2f | 941 | |
0c66c32d JG |
942 | mutex_enter(&os->os_lock); |
943 | dn = list_next(&os->os_dnodes, dn_marker); | |
944 | list_remove(&os->os_dnodes, dn_marker); | |
945 | } else { | |
946 | dn = list_next(&os->os_dnodes, dn); | |
947 | } | |
948 | } | |
949 | mutex_exit(&os->os_lock); | |
34dc7c2f | 950 | |
0c66c32d | 951 | kmem_free(dn_marker, sizeof (dnode_t)); |
34dc7c2f | 952 | |
0c66c32d | 953 | if (DMU_USERUSED_DNODE(os) != NULL) { |
9c5167d1 NF |
954 | if (DMU_PROJECTUSED_DNODE(os) != NULL) |
955 | dnode_evict_dbufs(DMU_PROJECTUSED_DNODE(os)); | |
0c66c32d JG |
956 | dnode_evict_dbufs(DMU_GROUPUSED_DNODE(os)); |
957 | dnode_evict_dbufs(DMU_USERUSED_DNODE(os)); | |
34dc7c2f | 958 | } |
0c66c32d | 959 | dnode_evict_dbufs(DMU_META_DNODE(os)); |
34dc7c2f BB |
960 | } |
961 | ||
0c66c32d JG |
962 | /* |
963 | * Objset eviction processing is split into into two pieces. | |
964 | * The first marks the objset as evicting, evicts any dbufs that | |
965 | * have a refcount of zero, and then queues up the objset for the | |
966 | * second phase of eviction. Once os->os_dnodes has been cleared by | |
967 | * dnode_buf_pageout()->dnode_destroy(), the second phase is executed. | |
968 | * The second phase closes the special dnodes, dequeues the objset from | |
969 | * the list of those undergoing eviction, and finally frees the objset. | |
970 | * | |
971 | * NOTE: Due to asynchronous eviction processing (invocation of | |
972 | * dnode_buf_pageout()), it is possible for the meta dnode for the | |
973 | * objset to have no holds even though os->os_dnodes is not empty. | |
974 | */ | |
34dc7c2f | 975 | void |
428870ff | 976 | dmu_objset_evict(objset_t *os) |
34dc7c2f | 977 | { |
6f1ffb06 MA |
978 | dsl_dataset_t *ds = os->os_dsl_dataset; |
979 | ||
1c27024e | 980 | for (int t = 0; t < TXG_SIZE; t++) |
428870ff | 981 | ASSERT(!dmu_objset_is_dirty(os, t)); |
34dc7c2f | 982 | |
0eb21616 JG |
983 | if (ds) |
984 | dsl_prop_unregister_all(ds, os); | |
34dc7c2f | 985 | |
428870ff BB |
986 | if (os->os_sa) |
987 | sa_tear_down(os); | |
988 | ||
13fe0198 | 989 | dmu_objset_evict_dbufs(os); |
34dc7c2f | 990 | |
0c66c32d JG |
991 | mutex_enter(&os->os_lock); |
992 | spa_evicting_os_register(os->os_spa, os); | |
993 | if (list_is_empty(&os->os_dnodes)) { | |
994 | mutex_exit(&os->os_lock); | |
995 | dmu_objset_evict_done(os); | |
996 | } else { | |
997 | mutex_exit(&os->os_lock); | |
998 | } | |
b5256303 TC |
999 | |
1000 | ||
0c66c32d JG |
1001 | } |
1002 | ||
1003 | void | |
1004 | dmu_objset_evict_done(objset_t *os) | |
1005 | { | |
1006 | ASSERT3P(list_head(&os->os_dnodes), ==, NULL); | |
1007 | ||
572e2857 BB |
1008 | dnode_special_close(&os->os_meta_dnode); |
1009 | if (DMU_USERUSED_DNODE(os)) { | |
9c5167d1 NF |
1010 | if (DMU_PROJECTUSED_DNODE(os)) |
1011 | dnode_special_close(&os->os_projectused_dnode); | |
572e2857 BB |
1012 | dnode_special_close(&os->os_userused_dnode); |
1013 | dnode_special_close(&os->os_groupused_dnode); | |
9babb374 | 1014 | } |
428870ff BB |
1015 | zil_free(os->os_zil); |
1016 | ||
d3c2ae1c | 1017 | arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf); |
572e2857 BB |
1018 | |
1019 | /* | |
1020 | * This is a barrier to prevent the objset from going away in | |
1021 | * dnode_move() until we can safely ensure that the objset is still in | |
1022 | * use. We consider the objset valid before the barrier and invalid | |
1023 | * after the barrier. | |
1024 | */ | |
1025 | rw_enter(&os_lock, RW_READER); | |
1026 | rw_exit(&os_lock); | |
1027 | ||
dbeb8796 MA |
1028 | kmem_free(os->os_obj_next_percpu, |
1029 | os->os_obj_next_percpu_len * sizeof (os->os_obj_next_percpu[0])); | |
1030 | ||
428870ff | 1031 | mutex_destroy(&os->os_lock); |
64fc7762 | 1032 | mutex_destroy(&os->os_userused_lock); |
428870ff BB |
1033 | mutex_destroy(&os->os_obj_lock); |
1034 | mutex_destroy(&os->os_user_ptr_lock); | |
c17486b2 | 1035 | mutex_destroy(&os->os_upgrade_lock); |
ffdf019c AM |
1036 | for (int i = 0; i < TXG_SIZE; i++) |
1037 | multilist_destroy(&os->os_dirty_dnodes[i]); | |
0c66c32d | 1038 | spa_evicting_os_deregister(os->os_spa, os); |
428870ff BB |
1039 | kmem_free(os, sizeof (objset_t)); |
1040 | } | |
9babb374 | 1041 | |
6413c95f | 1042 | inode_timespec_t |
428870ff BB |
1043 | dmu_objset_snap_cmtime(objset_t *os) |
1044 | { | |
1045 | return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); | |
34dc7c2f BB |
1046 | } |
1047 | ||
428870ff | 1048 | objset_t * |
b5256303 TC |
1049 | dmu_objset_create_impl_dnstats(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, |
1050 | dmu_objset_type_t type, int levels, int blksz, int ibs, dmu_tx_t *tx) | |
34dc7c2f | 1051 | { |
428870ff | 1052 | objset_t *os; |
34dc7c2f BB |
1053 | dnode_t *mdn; |
1054 | ||
1055 | ASSERT(dmu_tx_is_syncing(tx)); | |
13fe0198 | 1056 | |
b5256303 TC |
1057 | if (blksz == 0) |
1058 | blksz = DNODE_BLOCK_SIZE; | |
4807c0ba | 1059 | if (ibs == 0) |
b5256303 TC |
1060 | ibs = DN_MAX_INDBLKSHIFT; |
1061 | ||
572e2857 | 1062 | if (ds != NULL) |
13fe0198 | 1063 | VERIFY0(dmu_objset_from_ds(ds, &os)); |
572e2857 | 1064 | else |
13fe0198 | 1065 | VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os)); |
572e2857 BB |
1066 | |
1067 | mdn = DMU_META_DNODE(os); | |
34dc7c2f | 1068 | |
b5256303 TC |
1069 | dnode_allocate(mdn, DMU_OT_DNODE, blksz, ibs, DMU_OT_NONE, 0, |
1070 | DNODE_MIN_SLOTS, tx); | |
34dc7c2f BB |
1071 | |
1072 | /* | |
1073 | * We don't want to have to increase the meta-dnode's nlevels | |
e1cfd73f | 1074 | * later, because then we could do it in quiescing context while |
34dc7c2f BB |
1075 | * we are also accessing it in open context. |
1076 | * | |
1077 | * This precaution is not necessary for the MOS (ds == NULL), | |
1078 | * because the MOS is only updated in syncing context. | |
1079 | * This is most fortunate: the MOS is the only objset that | |
1080 | * needs to be synced multiple times as spa_sync() iterates | |
1081 | * to convergence, so minimizing its dn_nlevels matters. | |
1082 | */ | |
1083 | if (ds != NULL) { | |
b5256303 TC |
1084 | if (levels == 0) { |
1085 | levels = 1; | |
1086 | ||
1087 | /* | |
1088 | * Determine the number of levels necessary for the | |
1089 | * meta-dnode to contain DN_MAX_OBJECT dnodes. Note | |
1090 | * that in order to ensure that we do not overflow | |
1091 | * 64 bits, there has to be a nlevels that gives us a | |
1092 | * number of blocks > DN_MAX_OBJECT but < 2^64. | |
1093 | * Therefore, (mdn->dn_indblkshift - SPA_BLKPTRSHIFT) | |
1094 | * (10) must be less than (64 - log2(DN_MAX_OBJECT)) | |
1095 | * (16). | |
1096 | */ | |
1097 | while ((uint64_t)mdn->dn_nblkptr << | |
1098 | (mdn->dn_datablkshift - DNODE_SHIFT + (levels - 1) * | |
1099 | (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < | |
1100 | DN_MAX_OBJECT) | |
1101 | levels++; | |
1102 | } | |
34dc7c2f BB |
1103 | |
1104 | mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = | |
1105 | mdn->dn_nlevels = levels; | |
1106 | } | |
1107 | ||
1108 | ASSERT(type != DMU_OST_NONE); | |
1109 | ASSERT(type != DMU_OST_ANY); | |
1110 | ASSERT(type < DMU_OST_NUMTYPES); | |
428870ff | 1111 | os->os_phys->os_type = type; |
b5256303 TC |
1112 | |
1113 | /* | |
1114 | * Enable user accounting if it is enabled and this is not an | |
1115 | * encrypted receive. | |
1116 | */ | |
1117 | if (dmu_objset_userused_enabled(os) && | |
1118 | (!os->os_encrypted || !dmu_objset_is_receiving(os))) { | |
428870ff | 1119 | os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; |
1de321e6 | 1120 | if (dmu_objset_userobjused_enabled(os)) { |
d52d80b7 PD |
1121 | ds->ds_feature_activation[ |
1122 | SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE; | |
1de321e6 JX |
1123 | os->os_phys->os_flags |= |
1124 | OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE; | |
1125 | } | |
9c5167d1 | 1126 | if (dmu_objset_projectquota_enabled(os)) { |
d52d80b7 PD |
1127 | ds->ds_feature_activation[ |
1128 | SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE; | |
9c5167d1 NF |
1129 | os->os_phys->os_flags |= |
1130 | OBJSET_FLAG_PROJECTQUOTA_COMPLETE; | |
1131 | } | |
428870ff | 1132 | os->os_flags = os->os_phys->os_flags; |
9babb374 | 1133 | } |
34dc7c2f BB |
1134 | |
1135 | dsl_dataset_dirty(ds, tx); | |
1136 | ||
428870ff | 1137 | return (os); |
34dc7c2f BB |
1138 | } |
1139 | ||
b5256303 TC |
1140 | /* called from dsl for meta-objset */ |
1141 | objset_t * | |
1142 | dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, | |
1143 | dmu_objset_type_t type, dmu_tx_t *tx) | |
1144 | { | |
1145 | return (dmu_objset_create_impl_dnstats(spa, ds, bp, type, 0, 0, 0, tx)); | |
1146 | } | |
1147 | ||
13fe0198 MA |
1148 | typedef struct dmu_objset_create_arg { |
1149 | const char *doca_name; | |
1150 | cred_t *doca_cred; | |
e59a377a | 1151 | proc_t *doca_proc; |
13fe0198 MA |
1152 | void (*doca_userfunc)(objset_t *os, void *arg, |
1153 | cred_t *cr, dmu_tx_t *tx); | |
1154 | void *doca_userarg; | |
1155 | dmu_objset_type_t doca_type; | |
1156 | uint64_t doca_flags; | |
b5256303 | 1157 | dsl_crypto_params_t *doca_dcp; |
13fe0198 | 1158 | } dmu_objset_create_arg_t; |
34dc7c2f | 1159 | |
34dc7c2f | 1160 | static int |
13fe0198 | 1161 | dmu_objset_create_check(void *arg, dmu_tx_t *tx) |
34dc7c2f | 1162 | { |
13fe0198 MA |
1163 | dmu_objset_create_arg_t *doca = arg; |
1164 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
1165 | dsl_dir_t *pdd; | |
d8d418ff | 1166 | dsl_dataset_t *parentds; |
1167 | objset_t *parentos; | |
13fe0198 MA |
1168 | const char *tail; |
1169 | int error; | |
34dc7c2f | 1170 | |
13fe0198 | 1171 | if (strchr(doca->doca_name, '@') != NULL) |
2e528b49 | 1172 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 1173 | |
eca7b760 IK |
1174 | if (strlen(doca->doca_name) >= ZFS_MAX_DATASET_NAME_LEN) |
1175 | return (SET_ERROR(ENAMETOOLONG)); | |
1176 | ||
a7ed98d8 SD |
1177 | if (dataset_nestcheck(doca->doca_name) != 0) |
1178 | return (SET_ERROR(ENAMETOOLONG)); | |
1179 | ||
13fe0198 MA |
1180 | error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail); |
1181 | if (error != 0) | |
1182 | return (error); | |
1183 | if (tail == NULL) { | |
1184 | dsl_dir_rele(pdd, FTAG); | |
2e528b49 | 1185 | return (SET_ERROR(EEXIST)); |
34dc7c2f | 1186 | } |
b5256303 | 1187 | |
1fff937a | 1188 | error = dmu_objset_create_crypt_check(pdd, doca->doca_dcp, NULL); |
b5256303 TC |
1189 | if (error != 0) { |
1190 | dsl_dir_rele(pdd, FTAG); | |
1191 | return (error); | |
1192 | } | |
1193 | ||
788eb90c | 1194 | error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, |
e59a377a | 1195 | doca->doca_cred, doca->doca_proc); |
d8d418ff | 1196 | if (error != 0) { |
1197 | dsl_dir_rele(pdd, FTAG); | |
1198 | return (error); | |
1199 | } | |
b5256303 | 1200 | |
d8d418ff | 1201 | /* can't create below anything but filesystems (eg. no ZVOLs) */ |
1202 | error = dsl_dataset_hold_obj(pdd->dd_pool, | |
1203 | dsl_dir_phys(pdd)->dd_head_dataset_obj, FTAG, &parentds); | |
1204 | if (error != 0) { | |
1205 | dsl_dir_rele(pdd, FTAG); | |
1206 | return (error); | |
1207 | } | |
1208 | error = dmu_objset_from_ds(parentds, &parentos); | |
1209 | if (error != 0) { | |
1210 | dsl_dataset_rele(parentds, FTAG); | |
1211 | dsl_dir_rele(pdd, FTAG); | |
1212 | return (error); | |
1213 | } | |
1214 | if (dmu_objset_type(parentos) != DMU_OST_ZFS) { | |
1215 | dsl_dataset_rele(parentds, FTAG); | |
1216 | dsl_dir_rele(pdd, FTAG); | |
1217 | return (SET_ERROR(ZFS_ERR_WRONG_PARENT)); | |
1218 | } | |
1219 | dsl_dataset_rele(parentds, FTAG); | |
13fe0198 | 1220 | dsl_dir_rele(pdd, FTAG); |
34dc7c2f | 1221 | |
788eb90c | 1222 | return (error); |
34dc7c2f BB |
1223 | } |
1224 | ||
1225 | static void | |
13fe0198 | 1226 | dmu_objset_create_sync(void *arg, dmu_tx_t *tx) |
34dc7c2f | 1227 | { |
13fe0198 MA |
1228 | dmu_objset_create_arg_t *doca = arg; |
1229 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
52ce99dd | 1230 | spa_t *spa = dp->dp_spa; |
13fe0198 MA |
1231 | dsl_dir_t *pdd; |
1232 | const char *tail; | |
6f1ffb06 | 1233 | dsl_dataset_t *ds; |
13fe0198 | 1234 | uint64_t obj; |
6f1ffb06 | 1235 | blkptr_t *bp; |
13fe0198 | 1236 | objset_t *os; |
b5256303 | 1237 | zio_t *rzio; |
34dc7c2f | 1238 | |
13fe0198 | 1239 | VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail)); |
34dc7c2f | 1240 | |
13fe0198 | 1241 | obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags, |
b5256303 | 1242 | doca->doca_cred, doca->doca_dcp, tx); |
34dc7c2f | 1243 | |
b5256303 TC |
1244 | VERIFY0(dsl_dataset_hold_obj_flags(pdd->dd_pool, obj, |
1245 | DS_HOLD_FLAG_DECRYPT, FTAG, &ds)); | |
cc9bb3e5 | 1246 | rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG); |
6f1ffb06 | 1247 | bp = dsl_dataset_get_blkptr(ds); |
52ce99dd | 1248 | os = dmu_objset_create_impl(spa, ds, bp, doca->doca_type, tx); |
cc9bb3e5 | 1249 | rrw_exit(&ds->ds_bp_rwlock, FTAG); |
34dc7c2f | 1250 | |
13fe0198 MA |
1251 | if (doca->doca_userfunc != NULL) { |
1252 | doca->doca_userfunc(os, doca->doca_userarg, | |
1253 | doca->doca_cred, tx); | |
34dc7c2f BB |
1254 | } |
1255 | ||
b5256303 | 1256 | /* |
4807c0ba | 1257 | * The doca_userfunc() may write out some data that needs to be |
b5256303 TC |
1258 | * encrypted if the dataset is encrypted (specifically the root |
1259 | * directory). This data must be written out before the encryption | |
1260 | * key mapping is removed by dsl_dataset_rele_flags(). Force the | |
1261 | * I/O to occur immediately by invoking the relevant sections of | |
1262 | * dsl_pool_sync(). | |
1263 | */ | |
1264 | if (os->os_encrypted) { | |
1265 | dsl_dataset_t *tmpds = NULL; | |
1266 | boolean_t need_sync_done = B_FALSE; | |
1267 | ||
4807c0ba TC |
1268 | mutex_enter(&ds->ds_lock); |
1269 | ds->ds_owner = FTAG; | |
1270 | mutex_exit(&ds->ds_lock); | |
1271 | ||
52ce99dd | 1272 | rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); |
4807c0ba TC |
1273 | tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds, |
1274 | tx->tx_txg); | |
b5256303 | 1275 | if (tmpds != NULL) { |
b5256303 TC |
1276 | dsl_dataset_sync(ds, rzio, tx); |
1277 | need_sync_done = B_TRUE; | |
1278 | } | |
1279 | VERIFY0(zio_wait(rzio)); | |
1280 | ||
ba67d821 | 1281 | dmu_objset_sync_done(os, tx); |
b5256303 | 1282 | taskq_wait(dp->dp_sync_taskq); |
52ce99dd TC |
1283 | if (txg_list_member(&dp->dp_dirty_datasets, ds, tx->tx_txg)) { |
1284 | ASSERT3P(ds->ds_key_mapping, !=, NULL); | |
1285 | key_mapping_rele(spa, ds->ds_key_mapping, ds); | |
1286 | } | |
b5256303 | 1287 | |
52ce99dd | 1288 | rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED); |
4807c0ba TC |
1289 | tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds, |
1290 | tx->tx_txg); | |
b5256303 | 1291 | if (tmpds != NULL) { |
b5256303 TC |
1292 | dmu_buf_rele(ds->ds_dbuf, ds); |
1293 | dsl_dataset_sync(ds, rzio, tx); | |
1294 | } | |
1295 | VERIFY0(zio_wait(rzio)); | |
1296 | ||
52ce99dd TC |
1297 | if (need_sync_done) { |
1298 | ASSERT3P(ds->ds_key_mapping, !=, NULL); | |
1299 | key_mapping_rele(spa, ds->ds_key_mapping, ds); | |
b5256303 | 1300 | dsl_dataset_sync_done(ds, tx); |
52ce99dd | 1301 | } |
4807c0ba TC |
1302 | |
1303 | mutex_enter(&ds->ds_lock); | |
1304 | ds->ds_owner = NULL; | |
1305 | mutex_exit(&ds->ds_lock); | |
b5256303 TC |
1306 | } |
1307 | ||
74756182 | 1308 | spa_history_log_internal_ds(ds, "create", tx, " "); |
a0bd735a | 1309 | |
b5256303 | 1310 | dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG); |
13fe0198 | 1311 | dsl_dir_rele(pdd, FTAG); |
34dc7c2f BB |
1312 | } |
1313 | ||
1314 | int | |
428870ff | 1315 | dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, |
b5256303 | 1316 | dsl_crypto_params_t *dcp, dmu_objset_create_sync_func_t func, void *arg) |
34dc7c2f | 1317 | { |
13fe0198 | 1318 | dmu_objset_create_arg_t doca; |
b5256303 | 1319 | dsl_crypto_params_t tmp_dcp = { 0 }; |
34dc7c2f | 1320 | |
13fe0198 MA |
1321 | doca.doca_name = name; |
1322 | doca.doca_cred = CRED(); | |
e59a377a | 1323 | doca.doca_proc = curproc; |
13fe0198 MA |
1324 | doca.doca_flags = flags; |
1325 | doca.doca_userfunc = func; | |
1326 | doca.doca_userarg = arg; | |
1327 | doca.doca_type = type; | |
34dc7c2f | 1328 | |
b5256303 TC |
1329 | /* |
1330 | * Some callers (mostly for testing) do not provide a dcp on their | |
1331 | * own but various code inside the sync task will require it to be | |
1332 | * allocated. Rather than adding NULL checks throughout this code | |
1333 | * or adding dummy dcp's to all of the callers we simply create a | |
1334 | * dummy one here and use that. This zero dcp will have the same | |
85ce3f4f | 1335 | * effect as asking for inheritance of all encryption params. |
b5256303 TC |
1336 | */ |
1337 | doca.doca_dcp = (dcp != NULL) ? dcp : &tmp_dcp; | |
1338 | ||
ec213971 | 1339 | int rv = dsl_sync_task(name, |
3d45fdd6 | 1340 | dmu_objset_create_check, dmu_objset_create_sync, &doca, |
ec213971 MA |
1341 | 6, ZFS_SPACE_CHECK_NORMAL); |
1342 | ||
1343 | if (rv == 0) | |
1344 | zvol_create_minor(name); | |
1345 | return (rv); | |
34dc7c2f BB |
1346 | } |
1347 | ||
13fe0198 MA |
1348 | typedef struct dmu_objset_clone_arg { |
1349 | const char *doca_clone; | |
1350 | const char *doca_origin; | |
1351 | cred_t *doca_cred; | |
e59a377a | 1352 | proc_t *doca_proc; |
13fe0198 MA |
1353 | } dmu_objset_clone_arg_t; |
1354 | ||
13fe0198 MA |
1355 | static int |
1356 | dmu_objset_clone_check(void *arg, dmu_tx_t *tx) | |
34dc7c2f | 1357 | { |
13fe0198 | 1358 | dmu_objset_clone_arg_t *doca = arg; |
428870ff BB |
1359 | dsl_dir_t *pdd; |
1360 | const char *tail; | |
13fe0198 MA |
1361 | int error; |
1362 | dsl_dataset_t *origin; | |
1363 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
34dc7c2f | 1364 | |
13fe0198 | 1365 | if (strchr(doca->doca_clone, '@') != NULL) |
2e528b49 | 1366 | return (SET_ERROR(EINVAL)); |
13fe0198 | 1367 | |
eca7b760 IK |
1368 | if (strlen(doca->doca_clone) >= ZFS_MAX_DATASET_NAME_LEN) |
1369 | return (SET_ERROR(ENAMETOOLONG)); | |
1370 | ||
13fe0198 MA |
1371 | error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail); |
1372 | if (error != 0) | |
1373 | return (error); | |
428870ff | 1374 | if (tail == NULL) { |
13fe0198 | 1375 | dsl_dir_rele(pdd, FTAG); |
2e528b49 | 1376 | return (SET_ERROR(EEXIST)); |
34dc7c2f | 1377 | } |
1cddb8c9 | 1378 | |
788eb90c | 1379 | error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL, |
e59a377a | 1380 | doca->doca_cred, doca->doca_proc); |
788eb90c JJ |
1381 | if (error != 0) { |
1382 | dsl_dir_rele(pdd, FTAG); | |
1383 | return (SET_ERROR(EDQUOT)); | |
1384 | } | |
428870ff | 1385 | |
13fe0198 | 1386 | error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin); |
b5256303 TC |
1387 | if (error != 0) { |
1388 | dsl_dir_rele(pdd, FTAG); | |
572e2857 | 1389 | return (error); |
b5256303 | 1390 | } |
572e2857 | 1391 | |
13fe0198 | 1392 | /* You can only clone snapshots, not the head datasets. */ |
0c66c32d | 1393 | if (!origin->ds_is_snapshot) { |
13fe0198 | 1394 | dsl_dataset_rele(origin, FTAG); |
b5256303 | 1395 | dsl_dir_rele(pdd, FTAG); |
2e528b49 | 1396 | return (SET_ERROR(EINVAL)); |
428870ff | 1397 | } |
b5256303 | 1398 | |
13fe0198 | 1399 | dsl_dataset_rele(origin, FTAG); |
b5256303 | 1400 | dsl_dir_rele(pdd, FTAG); |
572e2857 | 1401 | |
13fe0198 | 1402 | return (0); |
9babb374 | 1403 | } |
34dc7c2f | 1404 | |
13fe0198 MA |
1405 | static void |
1406 | dmu_objset_clone_sync(void *arg, dmu_tx_t *tx) | |
34dc7c2f | 1407 | { |
13fe0198 MA |
1408 | dmu_objset_clone_arg_t *doca = arg; |
1409 | dsl_pool_t *dp = dmu_tx_pool(tx); | |
1410 | dsl_dir_t *pdd; | |
1411 | const char *tail; | |
1412 | dsl_dataset_t *origin, *ds; | |
1413 | uint64_t obj; | |
eca7b760 | 1414 | char namebuf[ZFS_MAX_DATASET_NAME_LEN]; |
6f1ffb06 | 1415 | |
13fe0198 MA |
1416 | VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail)); |
1417 | VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin)); | |
6f1ffb06 | 1418 | |
13fe0198 | 1419 | obj = dsl_dataset_create_sync(pdd, tail, origin, 0, |
b5256303 | 1420 | doca->doca_cred, NULL, tx); |
34dc7c2f | 1421 | |
13fe0198 MA |
1422 | VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds)); |
1423 | dsl_dataset_name(origin, namebuf); | |
1424 | spa_history_log_internal_ds(ds, "clone", tx, | |
74756182 | 1425 | "origin=%s (%llu)", namebuf, (u_longlong_t)origin->ds_object); |
13fe0198 MA |
1426 | dsl_dataset_rele(ds, FTAG); |
1427 | dsl_dataset_rele(origin, FTAG); | |
1428 | dsl_dir_rele(pdd, FTAG); | |
34dc7c2f BB |
1429 | } |
1430 | ||
1431 | int | |
13fe0198 | 1432 | dmu_objset_clone(const char *clone, const char *origin) |
34dc7c2f | 1433 | { |
13fe0198 | 1434 | dmu_objset_clone_arg_t doca; |
34dc7c2f | 1435 | |
13fe0198 MA |
1436 | doca.doca_clone = clone; |
1437 | doca.doca_origin = origin; | |
1438 | doca.doca_cred = CRED(); | |
e59a377a | 1439 | doca.doca_proc = curproc; |
572e2857 | 1440 | |
ec213971 | 1441 | int rv = dsl_sync_task(clone, |
3d45fdd6 | 1442 | dmu_objset_clone_check, dmu_objset_clone_sync, &doca, |
ec213971 MA |
1443 | 6, ZFS_SPACE_CHECK_NORMAL); |
1444 | ||
1445 | if (rv == 0) | |
1446 | zvol_create_minor(clone); | |
1447 | ||
1448 | return (rv); | |
6f1ffb06 MA |
1449 | } |
1450 | ||
1451 | int | |
1452 | dmu_objset_snapshot_one(const char *fsname, const char *snapname) | |
1453 | { | |
1454 | int err; | |
1455 | char *longsnap = kmem_asprintf("%s@%s", fsname, snapname); | |
1456 | nvlist_t *snaps = fnvlist_alloc(); | |
1457 | ||
1458 | fnvlist_add_boolean(snaps, longsnap); | |
e4f5fa12 | 1459 | kmem_strfree(longsnap); |
13fe0198 MA |
1460 | err = dsl_dataset_snapshot(snaps, NULL, NULL); |
1461 | fnvlist_free(snaps); | |
6f1ffb06 MA |
1462 | return (err); |
1463 | } | |
1464 | ||
1de321e6 JX |
1465 | static void |
1466 | dmu_objset_upgrade_task_cb(void *data) | |
1467 | { | |
1468 | objset_t *os = data; | |
1469 | ||
1470 | mutex_enter(&os->os_upgrade_lock); | |
1471 | os->os_upgrade_status = EINTR; | |
1472 | if (!os->os_upgrade_exit) { | |
39372fa2 AF |
1473 | int status; |
1474 | ||
1de321e6 JX |
1475 | mutex_exit(&os->os_upgrade_lock); |
1476 | ||
39372fa2 AF |
1477 | status = os->os_upgrade_cb(os); |
1478 | ||
1de321e6 | 1479 | mutex_enter(&os->os_upgrade_lock); |
39372fa2 AF |
1480 | |
1481 | os->os_upgrade_status = status; | |
1de321e6 JX |
1482 | } |
1483 | os->os_upgrade_exit = B_TRUE; | |
1484 | os->os_upgrade_id = 0; | |
1485 | mutex_exit(&os->os_upgrade_lock); | |
c0daec32 | 1486 | dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); |
1de321e6 JX |
1487 | } |
1488 | ||
1489 | static void | |
1490 | dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb) | |
1491 | { | |
1492 | if (os->os_upgrade_id != 0) | |
1493 | return; | |
1494 | ||
c0daec32 AB |
1495 | ASSERT(dsl_pool_config_held(dmu_objset_pool(os))); |
1496 | dsl_dataset_long_hold(dmu_objset_ds(os), upgrade_tag); | |
1497 | ||
1de321e6 JX |
1498 | mutex_enter(&os->os_upgrade_lock); |
1499 | if (os->os_upgrade_id == 0 && os->os_upgrade_status == 0) { | |
1500 | os->os_upgrade_exit = B_FALSE; | |
1501 | os->os_upgrade_cb = cb; | |
1502 | os->os_upgrade_id = taskq_dispatch( | |
1503 | os->os_spa->spa_upgrade_taskq, | |
1504 | dmu_objset_upgrade_task_cb, os, TQ_SLEEP); | |
c0daec32 AB |
1505 | if (os->os_upgrade_id == TASKQID_INVALID) { |
1506 | dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); | |
1de321e6 | 1507 | os->os_upgrade_status = ENOMEM; |
c0daec32 | 1508 | } |
39372fa2 AF |
1509 | } else { |
1510 | dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); | |
1de321e6 JX |
1511 | } |
1512 | mutex_exit(&os->os_upgrade_lock); | |
1513 | } | |
1514 | ||
1515 | static void | |
1516 | dmu_objset_upgrade_stop(objset_t *os) | |
1517 | { | |
1518 | mutex_enter(&os->os_upgrade_lock); | |
1519 | os->os_upgrade_exit = B_TRUE; | |
1520 | if (os->os_upgrade_id != 0) { | |
1521 | taskqid_t id = os->os_upgrade_id; | |
1522 | ||
1523 | os->os_upgrade_id = 0; | |
1524 | mutex_exit(&os->os_upgrade_lock); | |
1525 | ||
c0daec32 AB |
1526 | if ((taskq_cancel_id(os->os_spa->spa_upgrade_taskq, id)) == 0) { |
1527 | dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag); | |
1528 | } | |
4807c0ba | 1529 | txg_wait_synced(os->os_spa->spa_dsl_pool, 0); |
1de321e6 JX |
1530 | } else { |
1531 | mutex_exit(&os->os_upgrade_lock); | |
1532 | } | |
1533 | } | |
1534 | ||
34dc7c2f | 1535 | static void |
64fc7762 | 1536 | dmu_objset_sync_dnodes(multilist_sublist_t *list, dmu_tx_t *tx) |
34dc7c2f BB |
1537 | { |
1538 | dnode_t *dn; | |
1539 | ||
64fc7762 | 1540 | while ((dn = multilist_sublist_head(list)) != NULL) { |
34dc7c2f BB |
1541 | ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); |
1542 | ASSERT(dn->dn_dbuf->db_data_pending); | |
1543 | /* | |
9babb374 | 1544 | * Initialize dn_zio outside dnode_sync() because the |
93e28d66 | 1545 | * meta-dnode needs to set it outside dnode_sync(). |
34dc7c2f BB |
1546 | */ |
1547 | dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; | |
1548 | ASSERT(dn->dn_zio); | |
1549 | ||
1550 | ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); | |
64fc7762 | 1551 | multilist_sublist_remove(list, dn); |
9babb374 | 1552 | |
edc1e713 | 1553 | /* |
ba67d821 MA |
1554 | * See the comment above dnode_rele_task() for an explanation |
1555 | * of why this dnode hold is always needed (even when not | |
1556 | * doing user accounting). | |
edc1e713 | 1557 | */ |
ffdf019c | 1558 | multilist_t *newlist = &dn->dn_objset->os_synced_dnodes; |
ba67d821 MA |
1559 | (void) dnode_add_ref(dn, newlist); |
1560 | multilist_insert(newlist, dn); | |
9babb374 | 1561 | |
34dc7c2f BB |
1562 | dnode_sync(dn, tx); |
1563 | } | |
1564 | } | |
1565 | ||
34dc7c2f | 1566 | static void |
428870ff | 1567 | dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) |
34dc7c2f | 1568 | { |
14e4e3cb | 1569 | (void) abuf; |
b128c09f | 1570 | blkptr_t *bp = zio->io_bp; |
428870ff | 1571 | objset_t *os = arg; |
34dc7c2f | 1572 | dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; |
b5256303 | 1573 | uint64_t fill = 0; |
34dc7c2f | 1574 | |
9b67f605 | 1575 | ASSERT(!BP_IS_EMBEDDED(bp)); |
13fe0198 MA |
1576 | ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); |
1577 | ASSERT0(BP_GET_LEVEL(bp)); | |
34dc7c2f BB |
1578 | |
1579 | /* | |
9babb374 BB |
1580 | * Update rootbp fill count: it should be the number of objects |
1581 | * allocated in the object set (not counting the "special" | |
1582 | * objects that are stored in the objset_phys_t -- the meta | |
9c5167d1 | 1583 | * dnode and user/group/project accounting objects). |
34dc7c2f | 1584 | */ |
1c27024e | 1585 | for (int i = 0; i < dnp->dn_nblkptr; i++) |
b5256303 TC |
1586 | fill += BP_GET_FILL(&dnp->dn_blkptr[i]); |
1587 | ||
1588 | BP_SET_FILL(bp, fill); | |
1589 | ||
cc9bb3e5 GM |
1590 | if (os->os_dsl_dataset != NULL) |
1591 | rrw_enter(&os->os_dsl_dataset->ds_bp_rwlock, RW_WRITER, FTAG); | |
1592 | *os->os_rootbp = *bp; | |
1593 | if (os->os_dsl_dataset != NULL) | |
1594 | rrw_exit(&os->os_dsl_dataset->ds_bp_rwlock, FTAG); | |
428870ff BB |
1595 | } |
1596 | ||
428870ff BB |
1597 | static void |
1598 | dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) | |
1599 | { | |
14e4e3cb | 1600 | (void) abuf; |
428870ff BB |
1601 | blkptr_t *bp = zio->io_bp; |
1602 | blkptr_t *bp_orig = &zio->io_bp_orig; | |
1603 | objset_t *os = arg; | |
34dc7c2f | 1604 | |
b128c09f | 1605 | if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { |
428870ff | 1606 | ASSERT(BP_EQUAL(bp, bp_orig)); |
b128c09f | 1607 | } else { |
428870ff BB |
1608 | dsl_dataset_t *ds = os->os_dsl_dataset; |
1609 | dmu_tx_t *tx = os->os_synctx; | |
1610 | ||
1611 | (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); | |
1612 | dsl_dataset_block_born(ds, bp, tx); | |
34dc7c2f | 1613 | } |
cc9bb3e5 | 1614 | kmem_free(bp, sizeof (*bp)); |
34dc7c2f BB |
1615 | } |
1616 | ||
64fc7762 MA |
1617 | typedef struct sync_dnodes_arg { |
1618 | multilist_t *sda_list; | |
1619 | int sda_sublist_idx; | |
1620 | multilist_t *sda_newlist; | |
1621 | dmu_tx_t *sda_tx; | |
1622 | } sync_dnodes_arg_t; | |
1623 | ||
1624 | static void | |
1625 | sync_dnodes_task(void *arg) | |
1626 | { | |
1627 | sync_dnodes_arg_t *sda = arg; | |
1628 | ||
1629 | multilist_sublist_t *ms = | |
1630 | multilist_sublist_lock(sda->sda_list, sda->sda_sublist_idx); | |
1631 | ||
1632 | dmu_objset_sync_dnodes(ms, sda->sda_tx); | |
1633 | ||
1634 | multilist_sublist_unlock(ms); | |
1635 | ||
1636 | kmem_free(sda, sizeof (*sda)); | |
1637 | } | |
1638 | ||
1639 | ||
34dc7c2f BB |
1640 | /* called from dsl */ |
1641 | void | |
428870ff | 1642 | dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) |
34dc7c2f BB |
1643 | { |
1644 | int txgoff; | |
5dbd68a3 | 1645 | zbookmark_phys_t zb; |
428870ff | 1646 | zio_prop_t zp; |
34dc7c2f BB |
1647 | zio_t *zio; |
1648 | list_t *list; | |
1649 | dbuf_dirty_record_t *dr; | |
fc754677 AM |
1650 | int num_sublists; |
1651 | multilist_t *ml; | |
cc9bb3e5 GM |
1652 | blkptr_t *blkptr_copy = kmem_alloc(sizeof (*os->os_rootbp), KM_SLEEP); |
1653 | *blkptr_copy = *os->os_rootbp; | |
34dc7c2f | 1654 | |
8e739b2c | 1655 | dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", (u_longlong_t)tx->tx_txg); |
34dc7c2f BB |
1656 | |
1657 | ASSERT(dmu_tx_is_syncing(tx)); | |
1658 | /* XXX the write_done callback should really give us the tx... */ | |
1659 | os->os_synctx = tx; | |
1660 | ||
1661 | if (os->os_dsl_dataset == NULL) { | |
1662 | /* | |
1663 | * This is the MOS. If we have upgraded, | |
1664 | * spa_max_replication() could change, so reset | |
1665 | * os_copies here. | |
1666 | */ | |
1667 | os->os_copies = spa_max_replication(os->os_spa); | |
1668 | } | |
1669 | ||
1670 | /* | |
1671 | * Create the root block IO | |
1672 | */ | |
428870ff BB |
1673 | SET_BOOKMARK(&zb, os->os_dsl_dataset ? |
1674 | os->os_dsl_dataset->ds_object : DMU_META_OBJSET, | |
1675 | ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); | |
294f6806 | 1676 | arc_release(os->os_phys_buf, &os->os_phys_buf); |
b128c09f | 1677 | |
82644107 | 1678 | dmu_write_policy(os, NULL, 0, 0, &zp); |
9babb374 | 1679 | |
b5256303 | 1680 | /* |
0c03d21a MA |
1681 | * If we are either claiming the ZIL or doing a raw receive, write |
1682 | * out the os_phys_buf raw. Neither of these actions will effect the | |
1683 | * MAC at this point. | |
b5256303 | 1684 | */ |
0c03d21a MA |
1685 | if (os->os_raw_receive || |
1686 | os->os_next_write_raw[tx->tx_txg & TXG_MASK]) { | |
b5256303 | 1687 | ASSERT(os->os_encrypted); |
b5256303 TC |
1688 | arc_convert_to_raw(os->os_phys_buf, |
1689 | os->os_dsl_dataset->ds_object, ZFS_HOST_BYTEORDER, | |
1690 | DMU_OT_OBJSET, NULL, NULL, NULL); | |
1691 | } | |
1692 | ||
428870ff | 1693 | zio = arc_write(pio, os->os_spa, tx->tx_txg, |
c9d62d13 | 1694 | blkptr_copy, os->os_phys_buf, dmu_os_is_l2cacheable(os), |
bc77ba73 PD |
1695 | &zp, dmu_objset_write_ready, NULL, NULL, dmu_objset_write_done, |
1696 | os, ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); | |
34dc7c2f | 1697 | |
80a650b7 GA |
1698 | /* |
1699 | * In the codepath dsl_dataset_sync()->dmu_objset_sync() we cannot | |
1700 | * rely on the zio above completing and calling back | |
1701 | * dmu_objset_write_done()->dsl_dataset_block_born() before | |
1702 | * dsl_dataset_sync() actually activates feature flags near its end. | |
1703 | * Decide here if any features need to be activated, before | |
1704 | * dsl_dataset_sync() completes its run. | |
1705 | */ | |
1706 | dsl_dataset_feature_set_activation(blkptr_copy, os->os_dsl_dataset); | |
1707 | ||
34dc7c2f | 1708 | /* |
9babb374 | 1709 | * Sync special dnodes - the parent IO for the sync is the root block |
34dc7c2f | 1710 | */ |
572e2857 BB |
1711 | DMU_META_DNODE(os)->dn_zio = zio; |
1712 | dnode_sync(DMU_META_DNODE(os), tx); | |
34dc7c2f | 1713 | |
9babb374 BB |
1714 | os->os_phys->os_flags = os->os_flags; |
1715 | ||
572e2857 BB |
1716 | if (DMU_USERUSED_DNODE(os) && |
1717 | DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) { | |
1718 | DMU_USERUSED_DNODE(os)->dn_zio = zio; | |
1719 | dnode_sync(DMU_USERUSED_DNODE(os), tx); | |
1720 | DMU_GROUPUSED_DNODE(os)->dn_zio = zio; | |
1721 | dnode_sync(DMU_GROUPUSED_DNODE(os), tx); | |
9babb374 BB |
1722 | } |
1723 | ||
9c5167d1 NF |
1724 | if (DMU_PROJECTUSED_DNODE(os) && |
1725 | DMU_PROJECTUSED_DNODE(os)->dn_type != DMU_OT_NONE) { | |
1726 | DMU_PROJECTUSED_DNODE(os)->dn_zio = zio; | |
1727 | dnode_sync(DMU_PROJECTUSED_DNODE(os), tx); | |
1728 | } | |
1729 | ||
34dc7c2f BB |
1730 | txgoff = tx->tx_txg & TXG_MASK; |
1731 | ||
ba67d821 MA |
1732 | /* |
1733 | * We must create the list here because it uses the | |
1734 | * dn_dirty_link[] of this txg. But it may already | |
1735 | * exist because we call dsl_dataset_sync() twice per txg. | |
1736 | */ | |
ffdf019c AM |
1737 | if (os->os_synced_dnodes.ml_sublists == NULL) { |
1738 | multilist_create(&os->os_synced_dnodes, sizeof (dnode_t), | |
ba67d821 MA |
1739 | offsetof(dnode_t, dn_dirty_link[txgoff]), |
1740 | dnode_multilist_index_func); | |
1741 | } else { | |
ffdf019c | 1742 | ASSERT3U(os->os_synced_dnodes.ml_offset, ==, |
ba67d821 | 1743 | offsetof(dnode_t, dn_dirty_link[txgoff])); |
9babb374 BB |
1744 | } |
1745 | ||
ffdf019c | 1746 | ml = &os->os_dirty_dnodes[txgoff]; |
fc754677 AM |
1747 | num_sublists = multilist_get_num_sublists(ml); |
1748 | for (int i = 0; i < num_sublists; i++) { | |
1749 | if (multilist_sublist_is_empty_idx(ml, i)) | |
1750 | continue; | |
64fc7762 | 1751 | sync_dnodes_arg_t *sda = kmem_alloc(sizeof (*sda), KM_SLEEP); |
fc754677 | 1752 | sda->sda_list = ml; |
64fc7762 MA |
1753 | sda->sda_sublist_idx = i; |
1754 | sda->sda_tx = tx; | |
1755 | (void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq, | |
1756 | sync_dnodes_task, sda, 0); | |
1757 | /* callback frees sda */ | |
1758 | } | |
1759 | taskq_wait(dmu_objset_pool(os)->dp_sync_taskq); | |
34dc7c2f | 1760 | |
572e2857 | 1761 | list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff]; |
64fc7762 | 1762 | while ((dr = list_head(list)) != NULL) { |
13fe0198 | 1763 | ASSERT0(dr->dr_dbuf->db_level); |
34dc7c2f | 1764 | list_remove(list, dr); |
9cdf7b1f | 1765 | zio_nowait(dr->dr_zio); |
34dc7c2f | 1766 | } |
68cbd56e NB |
1767 | |
1768 | /* Enable dnode backfill if enough objects have been freed. */ | |
1769 | if (os->os_freed_dnodes >= dmu_rescan_dnode_threshold) { | |
1770 | os->os_rescan_dnodes = B_TRUE; | |
1771 | os->os_freed_dnodes = 0; | |
1772 | } | |
1773 | ||
34dc7c2f BB |
1774 | /* |
1775 | * Free intent log blocks up to this tx. | |
1776 | */ | |
1777 | zil_sync(os->os_zil, tx); | |
b128c09f | 1778 | os->os_phys->os_zil_header = os->os_zil_header; |
34dc7c2f BB |
1779 | zio_nowait(zio); |
1780 | } | |
1781 | ||
428870ff BB |
1782 | boolean_t |
1783 | dmu_objset_is_dirty(objset_t *os, uint64_t txg) | |
1784 | { | |
ffdf019c | 1785 | return (!multilist_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK])); |
428870ff BB |
1786 | } |
1787 | ||
7bcb7f08 | 1788 | static file_info_cb_t *file_cbs[DMU_OST_NUMTYPES]; |
9babb374 BB |
1789 | |
1790 | void | |
7bcb7f08 | 1791 | dmu_objset_register_type(dmu_objset_type_t ost, file_info_cb_t *cb) |
9babb374 | 1792 | { |
7bcb7f08 MA |
1793 | file_cbs[ost] = cb; |
1794 | } | |
1795 | ||
1796 | int | |
1797 | dmu_get_file_info(objset_t *os, dmu_object_type_t bonustype, const void *data, | |
1798 | zfs_file_info_t *zfi) | |
1799 | { | |
1800 | file_info_cb_t *cb = file_cbs[os->os_phys->os_type]; | |
1801 | if (cb == NULL) | |
1802 | return (EINVAL); | |
1803 | return (cb(bonustype, data, zfi)); | |
9babb374 BB |
1804 | } |
1805 | ||
1806 | boolean_t | |
428870ff | 1807 | dmu_objset_userused_enabled(objset_t *os) |
9babb374 BB |
1808 | { |
1809 | return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && | |
7bcb7f08 | 1810 | file_cbs[os->os_phys->os_type] != NULL && |
572e2857 | 1811 | DMU_USERUSED_DNODE(os) != NULL); |
9babb374 BB |
1812 | } |
1813 | ||
1de321e6 JX |
1814 | boolean_t |
1815 | dmu_objset_userobjused_enabled(objset_t *os) | |
1816 | { | |
1817 | return (dmu_objset_userused_enabled(os) && | |
1818 | spa_feature_is_enabled(os->os_spa, SPA_FEATURE_USEROBJ_ACCOUNTING)); | |
1819 | } | |
1820 | ||
9c5167d1 NF |
1821 | boolean_t |
1822 | dmu_objset_projectquota_enabled(objset_t *os) | |
1823 | { | |
7bcb7f08 | 1824 | return (file_cbs[os->os_phys->os_type] != NULL && |
9c5167d1 NF |
1825 | DMU_PROJECTUSED_DNODE(os) != NULL && |
1826 | spa_feature_is_enabled(os->os_spa, SPA_FEATURE_PROJECT_QUOTA)); | |
1827 | } | |
1828 | ||
9b7a83cb JX |
1829 | typedef struct userquota_node { |
1830 | /* must be in the first filed, see userquota_update_cache() */ | |
1831 | char uqn_id[20 + DMU_OBJACCT_PREFIX_LEN]; | |
1832 | int64_t uqn_delta; | |
1833 | avl_node_t uqn_node; | |
1834 | } userquota_node_t; | |
1835 | ||
1836 | typedef struct userquota_cache { | |
1837 | avl_tree_t uqc_user_deltas; | |
1838 | avl_tree_t uqc_group_deltas; | |
9c5167d1 | 1839 | avl_tree_t uqc_project_deltas; |
9b7a83cb JX |
1840 | } userquota_cache_t; |
1841 | ||
1842 | static int | |
1843 | userquota_compare(const void *l, const void *r) | |
1844 | { | |
1845 | const userquota_node_t *luqn = l; | |
1846 | const userquota_node_t *ruqn = r; | |
e4ffa98d | 1847 | int rv; |
9b7a83cb JX |
1848 | |
1849 | /* | |
1850 | * NB: can only access uqn_id because userquota_update_cache() doesn't | |
1851 | * pass in an entire userquota_node_t. | |
1852 | */ | |
e4ffa98d BB |
1853 | rv = strcmp(luqn->uqn_id, ruqn->uqn_id); |
1854 | ||
ca577779 | 1855 | return (TREE_ISIGN(rv)); |
9b7a83cb JX |
1856 | } |
1857 | ||
1858 | static void | |
1859 | do_userquota_cacheflush(objset_t *os, userquota_cache_t *cache, dmu_tx_t *tx) | |
1860 | { | |
1861 | void *cookie; | |
1862 | userquota_node_t *uqn; | |
1863 | ||
1864 | ASSERT(dmu_tx_is_syncing(tx)); | |
1865 | ||
1866 | cookie = NULL; | |
1867 | while ((uqn = avl_destroy_nodes(&cache->uqc_user_deltas, | |
1868 | &cookie)) != NULL) { | |
64fc7762 MA |
1869 | /* |
1870 | * os_userused_lock protects against concurrent calls to | |
1871 | * zap_increment_int(). It's needed because zap_increment_int() | |
1872 | * is not thread-safe (i.e. not atomic). | |
1873 | */ | |
1874 | mutex_enter(&os->os_userused_lock); | |
9b7a83cb JX |
1875 | VERIFY0(zap_increment(os, DMU_USERUSED_OBJECT, |
1876 | uqn->uqn_id, uqn->uqn_delta, tx)); | |
64fc7762 | 1877 | mutex_exit(&os->os_userused_lock); |
9b7a83cb JX |
1878 | kmem_free(uqn, sizeof (*uqn)); |
1879 | } | |
1880 | avl_destroy(&cache->uqc_user_deltas); | |
1881 | ||
1882 | cookie = NULL; | |
1883 | while ((uqn = avl_destroy_nodes(&cache->uqc_group_deltas, | |
1884 | &cookie)) != NULL) { | |
64fc7762 | 1885 | mutex_enter(&os->os_userused_lock); |
9b7a83cb JX |
1886 | VERIFY0(zap_increment(os, DMU_GROUPUSED_OBJECT, |
1887 | uqn->uqn_id, uqn->uqn_delta, tx)); | |
64fc7762 | 1888 | mutex_exit(&os->os_userused_lock); |
9b7a83cb JX |
1889 | kmem_free(uqn, sizeof (*uqn)); |
1890 | } | |
1891 | avl_destroy(&cache->uqc_group_deltas); | |
9c5167d1 NF |
1892 | |
1893 | if (dmu_objset_projectquota_enabled(os)) { | |
1894 | cookie = NULL; | |
1895 | while ((uqn = avl_destroy_nodes(&cache->uqc_project_deltas, | |
1896 | &cookie)) != NULL) { | |
1897 | mutex_enter(&os->os_userused_lock); | |
1898 | VERIFY0(zap_increment(os, DMU_PROJECTUSED_OBJECT, | |
1899 | uqn->uqn_id, uqn->uqn_delta, tx)); | |
1900 | mutex_exit(&os->os_userused_lock); | |
1901 | kmem_free(uqn, sizeof (*uqn)); | |
1902 | } | |
1903 | avl_destroy(&cache->uqc_project_deltas); | |
1904 | } | |
9b7a83cb JX |
1905 | } |
1906 | ||
1907 | static void | |
1908 | userquota_update_cache(avl_tree_t *avl, const char *id, int64_t delta) | |
1909 | { | |
1910 | userquota_node_t *uqn; | |
1911 | avl_index_t idx; | |
1912 | ||
1913 | ASSERT(strlen(id) < sizeof (uqn->uqn_id)); | |
1914 | /* | |
1915 | * Use id directly for searching because uqn_id is the first field of | |
1916 | * userquota_node_t and fields after uqn_id won't be accessed in | |
1917 | * avl_find(). | |
1918 | */ | |
1919 | uqn = avl_find(avl, (const void *)id, &idx); | |
1920 | if (uqn == NULL) { | |
1921 | uqn = kmem_zalloc(sizeof (*uqn), KM_SLEEP); | |
1f51b525 | 1922 | strlcpy(uqn->uqn_id, id, sizeof (uqn->uqn_id)); |
9b7a83cb JX |
1923 | avl_insert(avl, uqn, idx); |
1924 | } | |
1925 | uqn->uqn_delta += delta; | |
1926 | } | |
1927 | ||
428870ff | 1928 | static void |
9c5167d1 NF |
1929 | do_userquota_update(objset_t *os, userquota_cache_t *cache, uint64_t used, |
1930 | uint64_t flags, uint64_t user, uint64_t group, uint64_t project, | |
1931 | boolean_t subtract) | |
428870ff | 1932 | { |
9c5167d1 | 1933 | if (flags & DNODE_FLAG_USERUSED_ACCOUNTED) { |
50c957f7 | 1934 | int64_t delta = DNODE_MIN_SIZE + used; |
9b7a83cb JX |
1935 | char name[20]; |
1936 | ||
428870ff BB |
1937 | if (subtract) |
1938 | delta = -delta; | |
9b7a83cb | 1939 | |
c9e319fa | 1940 | (void) snprintf(name, sizeof (name), "%llx", (longlong_t)user); |
9b7a83cb JX |
1941 | userquota_update_cache(&cache->uqc_user_deltas, name, delta); |
1942 | ||
c9e319fa | 1943 | (void) snprintf(name, sizeof (name), "%llx", (longlong_t)group); |
9b7a83cb | 1944 | userquota_update_cache(&cache->uqc_group_deltas, name, delta); |
9c5167d1 NF |
1945 | |
1946 | if (dmu_objset_projectquota_enabled(os)) { | |
c9e319fa JL |
1947 | (void) snprintf(name, sizeof (name), "%llx", |
1948 | (longlong_t)project); | |
9c5167d1 NF |
1949 | userquota_update_cache(&cache->uqc_project_deltas, |
1950 | name, delta); | |
1951 | } | |
428870ff BB |
1952 | } |
1953 | } | |
1954 | ||
1de321e6 | 1955 | static void |
9c5167d1 NF |
1956 | do_userobjquota_update(objset_t *os, userquota_cache_t *cache, uint64_t flags, |
1957 | uint64_t user, uint64_t group, uint64_t project, boolean_t subtract) | |
1de321e6 JX |
1958 | { |
1959 | if (flags & DNODE_FLAG_USEROBJUSED_ACCOUNTED) { | |
1960 | char name[20 + DMU_OBJACCT_PREFIX_LEN]; | |
9b7a83cb | 1961 | int delta = subtract ? -1 : 1; |
1de321e6 JX |
1962 | |
1963 | (void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx", | |
1964 | (longlong_t)user); | |
9b7a83cb | 1965 | userquota_update_cache(&cache->uqc_user_deltas, name, delta); |
1de321e6 JX |
1966 | |
1967 | (void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx", | |
1968 | (longlong_t)group); | |
9b7a83cb | 1969 | userquota_update_cache(&cache->uqc_group_deltas, name, delta); |
9c5167d1 NF |
1970 | |
1971 | if (dmu_objset_projectquota_enabled(os)) { | |
1972 | (void) snprintf(name, sizeof (name), | |
1973 | DMU_OBJACCT_PREFIX "%llx", (longlong_t)project); | |
1974 | userquota_update_cache(&cache->uqc_project_deltas, | |
1975 | name, delta); | |
1976 | } | |
1de321e6 JX |
1977 | } |
1978 | } | |
1979 | ||
64fc7762 MA |
1980 | typedef struct userquota_updates_arg { |
1981 | objset_t *uua_os; | |
1982 | int uua_sublist_idx; | |
1983 | dmu_tx_t *uua_tx; | |
1984 | } userquota_updates_arg_t; | |
1985 | ||
1986 | static void | |
1987 | userquota_updates_task(void *arg) | |
9babb374 | 1988 | { |
64fc7762 MA |
1989 | userquota_updates_arg_t *uua = arg; |
1990 | objset_t *os = uua->uua_os; | |
1991 | dmu_tx_t *tx = uua->uua_tx; | |
9babb374 | 1992 | dnode_t *dn; |
9b7a83cb | 1993 | userquota_cache_t cache = { { 0 } }; |
9babb374 | 1994 | |
64fc7762 | 1995 | multilist_sublist_t *list = |
ffdf019c | 1996 | multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx); |
9babb374 | 1997 | |
64fc7762 MA |
1998 | ASSERT(multilist_sublist_head(list) == NULL || |
1999 | dmu_objset_userused_enabled(os)); | |
9b7a83cb JX |
2000 | avl_create(&cache.uqc_user_deltas, userquota_compare, |
2001 | sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node)); | |
2002 | avl_create(&cache.uqc_group_deltas, userquota_compare, | |
2003 | sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node)); | |
9c5167d1 NF |
2004 | if (dmu_objset_projectquota_enabled(os)) |
2005 | avl_create(&cache.uqc_project_deltas, userquota_compare, | |
2006 | sizeof (userquota_node_t), offsetof(userquota_node_t, | |
2007 | uqn_node)); | |
9b7a83cb | 2008 | |
64fc7762 | 2009 | while ((dn = multilist_sublist_head(list)) != NULL) { |
572e2857 | 2010 | int flags; |
9babb374 | 2011 | ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); |
9babb374 BB |
2012 | ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || |
2013 | dn->dn_phys->dn_flags & | |
2014 | DNODE_FLAG_USERUSED_ACCOUNTED); | |
2015 | ||
572e2857 BB |
2016 | flags = dn->dn_id_flags; |
2017 | ASSERT(flags); | |
2018 | if (flags & DN_ID_OLD_EXIST) { | |
9c5167d1 NF |
2019 | do_userquota_update(os, &cache, dn->dn_oldused, |
2020 | dn->dn_oldflags, dn->dn_olduid, dn->dn_oldgid, | |
2021 | dn->dn_oldprojid, B_TRUE); | |
2022 | do_userobjquota_update(os, &cache, dn->dn_oldflags, | |
2023 | dn->dn_olduid, dn->dn_oldgid, | |
2024 | dn->dn_oldprojid, B_TRUE); | |
428870ff | 2025 | } |
572e2857 | 2026 | if (flags & DN_ID_NEW_EXIST) { |
9c5167d1 | 2027 | do_userquota_update(os, &cache, |
9b7a83cb | 2028 | DN_USED_BYTES(dn->dn_phys), dn->dn_phys->dn_flags, |
9c5167d1 NF |
2029 | dn->dn_newuid, dn->dn_newgid, |
2030 | dn->dn_newprojid, B_FALSE); | |
2031 | do_userobjquota_update(os, &cache, | |
2032 | dn->dn_phys->dn_flags, dn->dn_newuid, dn->dn_newgid, | |
2033 | dn->dn_newprojid, B_FALSE); | |
428870ff BB |
2034 | } |
2035 | ||
572e2857 | 2036 | mutex_enter(&dn->dn_mtx); |
428870ff BB |
2037 | dn->dn_oldused = 0; |
2038 | dn->dn_oldflags = 0; | |
2039 | if (dn->dn_id_flags & DN_ID_NEW_EXIST) { | |
2040 | dn->dn_olduid = dn->dn_newuid; | |
2041 | dn->dn_oldgid = dn->dn_newgid; | |
9c5167d1 | 2042 | dn->dn_oldprojid = dn->dn_newprojid; |
428870ff BB |
2043 | dn->dn_id_flags |= DN_ID_OLD_EXIST; |
2044 | if (dn->dn_bonuslen == 0) | |
2045 | dn->dn_id_flags |= DN_ID_CHKED_SPILL; | |
2046 | else | |
2047 | dn->dn_id_flags |= DN_ID_CHKED_BONUS; | |
2048 | } | |
2049 | dn->dn_id_flags &= ~(DN_ID_NEW_EXIST); | |
9babb374 BB |
2050 | mutex_exit(&dn->dn_mtx); |
2051 | ||
64fc7762 | 2052 | multilist_sublist_remove(list, dn); |
ffdf019c | 2053 | dnode_rele(dn, &os->os_synced_dnodes); |
9babb374 | 2054 | } |
9b7a83cb | 2055 | do_userquota_cacheflush(os, &cache, tx); |
64fc7762 MA |
2056 | multilist_sublist_unlock(list); |
2057 | kmem_free(uua, sizeof (*uua)); | |
2058 | } | |
2059 | ||
ba67d821 MA |
2060 | /* |
2061 | * Release dnode holds from dmu_objset_sync_dnodes(). When the dnode is being | |
2062 | * synced (i.e. we have issued the zio's for blocks in the dnode), it can't be | |
2063 | * evicted because the block containing the dnode can't be evicted until it is | |
2064 | * written out. However, this hold is necessary to prevent the dnode_t from | |
2065 | * being moved (via dnode_move()) while it's still referenced by | |
2066 | * dbuf_dirty_record_t:dr_dnode. And dr_dnode is needed for | |
2067 | * dirty_lightweight_leaf-type dirty records. | |
2068 | * | |
2069 | * If we are doing user-object accounting, the dnode_rele() happens from | |
2070 | * userquota_updates_task() instead. | |
2071 | */ | |
2072 | static void | |
2073 | dnode_rele_task(void *arg) | |
64fc7762 | 2074 | { |
ba67d821 MA |
2075 | userquota_updates_arg_t *uua = arg; |
2076 | objset_t *os = uua->uua_os; | |
2077 | ||
2078 | multilist_sublist_t *list = | |
ffdf019c | 2079 | multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx); |
fc754677 | 2080 | |
ba67d821 MA |
2081 | dnode_t *dn; |
2082 | while ((dn = multilist_sublist_head(list)) != NULL) { | |
2083 | multilist_sublist_remove(list, dn); | |
ffdf019c | 2084 | dnode_rele(dn, &os->os_synced_dnodes); |
ba67d821 MA |
2085 | } |
2086 | multilist_sublist_unlock(list); | |
2087 | kmem_free(uua, sizeof (*uua)); | |
2088 | } | |
2089 | ||
2090 | /* | |
2091 | * Return TRUE if userquota updates are needed. | |
2092 | */ | |
2093 | static boolean_t | |
2094 | dmu_objset_do_userquota_updates_prep(objset_t *os, dmu_tx_t *tx) | |
2095 | { | |
64fc7762 | 2096 | if (!dmu_objset_userused_enabled(os)) |
ba67d821 | 2097 | return (B_FALSE); |
64fc7762 | 2098 | |
163a8c28 TC |
2099 | /* |
2100 | * If this is a raw receive just return and handle accounting | |
2101 | * later when we have the keys loaded. We also don't do user | |
2102 | * accounting during claiming since the datasets are not owned | |
2103 | * for the duration of claiming and this txg should only be | |
2104 | * used for recovery. | |
2105 | */ | |
b5256303 | 2106 | if (os->os_encrypted && dmu_objset_is_receiving(os)) |
ba67d821 | 2107 | return (B_FALSE); |
b5256303 | 2108 | |
163a8c28 | 2109 | if (tx->tx_txg <= os->os_spa->spa_claim_max_txg) |
ba67d821 | 2110 | return (B_FALSE); |
163a8c28 | 2111 | |
9c5167d1 | 2112 | /* Allocate the user/group/project used objects if necessary. */ |
64fc7762 MA |
2113 | if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) { |
2114 | VERIFY0(zap_create_claim(os, | |
2115 | DMU_USERUSED_OBJECT, | |
2116 | DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); | |
2117 | VERIFY0(zap_create_claim(os, | |
2118 | DMU_GROUPUSED_OBJECT, | |
2119 | DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); | |
2120 | } | |
2121 | ||
9c5167d1 NF |
2122 | if (dmu_objset_projectquota_enabled(os) && |
2123 | DMU_PROJECTUSED_DNODE(os)->dn_type == DMU_OT_NONE) { | |
2124 | VERIFY0(zap_create_claim(os, DMU_PROJECTUSED_OBJECT, | |
2125 | DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); | |
2126 | } | |
ba67d821 MA |
2127 | return (B_TRUE); |
2128 | } | |
9c5167d1 | 2129 | |
ba67d821 MA |
2130 | /* |
2131 | * Dispatch taskq tasks to dp_sync_taskq to update the user accounting, and | |
2132 | * also release the holds on the dnodes from dmu_objset_sync_dnodes(). | |
2133 | * The caller must taskq_wait(dp_sync_taskq). | |
2134 | */ | |
2135 | void | |
2136 | dmu_objset_sync_done(objset_t *os, dmu_tx_t *tx) | |
2137 | { | |
2138 | boolean_t need_userquota = dmu_objset_do_userquota_updates_prep(os, tx); | |
2139 | ||
ffdf019c | 2140 | int num_sublists = multilist_get_num_sublists(&os->os_synced_dnodes); |
fc754677 | 2141 | for (int i = 0; i < num_sublists; i++) { |
64fc7762 MA |
2142 | userquota_updates_arg_t *uua = |
2143 | kmem_alloc(sizeof (*uua), KM_SLEEP); | |
2144 | uua->uua_os = os; | |
2145 | uua->uua_sublist_idx = i; | |
2146 | uua->uua_tx = tx; | |
ba67d821 MA |
2147 | |
2148 | /* | |
2149 | * If we don't need to update userquotas, use | |
2150 | * dnode_rele_task() to call dnode_rele() | |
2151 | */ | |
64fc7762 | 2152 | (void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq, |
ba67d821 MA |
2153 | need_userquota ? userquota_updates_task : dnode_rele_task, |
2154 | uua, 0); | |
64fc7762 MA |
2155 | /* callback frees uua */ |
2156 | } | |
9babb374 BB |
2157 | } |
2158 | ||
ba67d821 | 2159 | |
428870ff BB |
2160 | /* |
2161 | * Returns a pointer to data to find uid/gid from | |
2162 | * | |
2163 | * If a dirty record for transaction group that is syncing can't | |
2164 | * be found then NULL is returned. In the NULL case it is assumed | |
2165 | * the uid/gid aren't changing. | |
2166 | */ | |
2167 | static void * | |
2168 | dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx) | |
2169 | { | |
cccbed9f | 2170 | dbuf_dirty_record_t *dr; |
428870ff BB |
2171 | void *data; |
2172 | ||
2173 | if (db->db_dirtycnt == 0) | |
2174 | return (db->db.db_data); /* Nothing is changing */ | |
2175 | ||
cccbed9f | 2176 | dr = dbuf_find_dirty_eq(db, tx->tx_txg); |
428870ff | 2177 | |
572e2857 | 2178 | if (dr == NULL) { |
428870ff | 2179 | data = NULL; |
572e2857 | 2180 | } else { |
ba67d821 | 2181 | if (dr->dr_dnode->dn_bonuslen == 0 && |
572e2857 BB |
2182 | dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID) |
2183 | data = dr->dt.dl.dr_data->b_data; | |
2184 | else | |
2185 | data = dr->dt.dl.dr_data; | |
572e2857 BB |
2186 | } |
2187 | ||
428870ff BB |
2188 | return (data); |
2189 | } | |
2190 | ||
2191 | void | |
2192 | dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx) | |
2193 | { | |
2194 | objset_t *os = dn->dn_objset; | |
2195 | void *data = NULL; | |
2196 | dmu_buf_impl_t *db = NULL; | |
428870ff BB |
2197 | int flags = dn->dn_id_flags; |
2198 | int error; | |
2199 | boolean_t have_spill = B_FALSE; | |
2200 | ||
2201 | if (!dmu_objset_userused_enabled(dn->dn_objset)) | |
2202 | return; | |
2203 | ||
b5256303 TC |
2204 | /* |
2205 | * Raw receives introduce a problem with user accounting. Raw | |
2206 | * receives cannot update the user accounting info because the | |
2207 | * user ids and the sizes are encrypted. To guarantee that we | |
2208 | * never end up with bad user accounting, we simply disable it | |
2209 | * during raw receives. We also disable this for normal receives | |
2210 | * so that an incremental raw receive may be done on top of an | |
2211 | * existing non-raw receive. | |
2212 | */ | |
2213 | if (os->os_encrypted && dmu_objset_is_receiving(os)) | |
2214 | return; | |
2215 | ||
428870ff BB |
2216 | if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST| |
2217 | DN_ID_CHKED_SPILL))) | |
2218 | return; | |
2219 | ||
2220 | if (before && dn->dn_bonuslen != 0) | |
2221 | data = DN_BONUS(dn->dn_phys); | |
2222 | else if (!before && dn->dn_bonuslen != 0) { | |
a3000f93 BB |
2223 | if (dn->dn_bonus) { |
2224 | db = dn->dn_bonus; | |
428870ff BB |
2225 | mutex_enter(&db->db_mtx); |
2226 | data = dmu_objset_userquota_find_data(db, tx); | |
2227 | } else { | |
2228 | data = DN_BONUS(dn->dn_phys); | |
2229 | } | |
2230 | } else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) { | |
2231 | int rf = 0; | |
2232 | ||
2233 | if (RW_WRITE_HELD(&dn->dn_struct_rwlock)) | |
2234 | rf |= DB_RF_HAVESTRUCT; | |
572e2857 BB |
2235 | error = dmu_spill_hold_by_dnode(dn, |
2236 | rf | DB_RF_MUST_SUCCEED, | |
428870ff BB |
2237 | FTAG, (dmu_buf_t **)&db); |
2238 | ASSERT(error == 0); | |
2239 | mutex_enter(&db->db_mtx); | |
2240 | data = (before) ? db->db.db_data : | |
2241 | dmu_objset_userquota_find_data(db, tx); | |
2242 | have_spill = B_TRUE; | |
2243 | } else { | |
2244 | mutex_enter(&dn->dn_mtx); | |
2245 | dn->dn_id_flags |= DN_ID_CHKED_BONUS; | |
2246 | mutex_exit(&dn->dn_mtx); | |
2247 | return; | |
2248 | } | |
2249 | ||
428870ff BB |
2250 | /* |
2251 | * Must always call the callback in case the object | |
2252 | * type has changed and that type isn't an object type to track | |
2253 | */ | |
7bcb7f08 MA |
2254 | zfs_file_info_t zfi; |
2255 | error = file_cbs[os->os_phys->os_type](dn->dn_bonustype, data, &zfi); | |
2256 | ||
2257 | if (before) { | |
2258 | ASSERT(data); | |
2259 | dn->dn_olduid = zfi.zfi_user; | |
2260 | dn->dn_oldgid = zfi.zfi_group; | |
2261 | dn->dn_oldprojid = zfi.zfi_project; | |
2262 | } else if (data) { | |
2263 | dn->dn_newuid = zfi.zfi_user; | |
2264 | dn->dn_newgid = zfi.zfi_group; | |
2265 | dn->dn_newprojid = zfi.zfi_project; | |
2266 | } | |
428870ff BB |
2267 | |
2268 | /* | |
2269 | * Preserve existing uid/gid when the callback can't determine | |
2270 | * what the new uid/gid are and the callback returned EEXIST. | |
2271 | * The EEXIST error tells us to just use the existing uid/gid. | |
2272 | * If we don't know what the old values are then just assign | |
2273 | * them to 0, since that is a new file being created. | |
2274 | */ | |
2275 | if (!before && data == NULL && error == EEXIST) { | |
2276 | if (flags & DN_ID_OLD_EXIST) { | |
2277 | dn->dn_newuid = dn->dn_olduid; | |
2278 | dn->dn_newgid = dn->dn_oldgid; | |
2705ebf0 | 2279 | dn->dn_newprojid = dn->dn_oldprojid; |
428870ff BB |
2280 | } else { |
2281 | dn->dn_newuid = 0; | |
2282 | dn->dn_newgid = 0; | |
9c5167d1 | 2283 | dn->dn_newprojid = ZFS_DEFAULT_PROJID; |
428870ff BB |
2284 | } |
2285 | error = 0; | |
2286 | } | |
2287 | ||
2288 | if (db) | |
2289 | mutex_exit(&db->db_mtx); | |
2290 | ||
2291 | mutex_enter(&dn->dn_mtx); | |
2292 | if (error == 0 && before) | |
2293 | dn->dn_id_flags |= DN_ID_OLD_EXIST; | |
2294 | if (error == 0 && !before) | |
2295 | dn->dn_id_flags |= DN_ID_NEW_EXIST; | |
2296 | ||
2297 | if (have_spill) { | |
2298 | dn->dn_id_flags |= DN_ID_CHKED_SPILL; | |
2299 | } else { | |
2300 | dn->dn_id_flags |= DN_ID_CHKED_BONUS; | |
2301 | } | |
2302 | mutex_exit(&dn->dn_mtx); | |
a3000f93 | 2303 | if (have_spill) |
428870ff BB |
2304 | dmu_buf_rele((dmu_buf_t *)db, FTAG); |
2305 | } | |
2306 | ||
9babb374 BB |
2307 | boolean_t |
2308 | dmu_objset_userspace_present(objset_t *os) | |
2309 | { | |
428870ff | 2310 | return (os->os_phys->os_flags & |
9babb374 BB |
2311 | OBJSET_FLAG_USERACCOUNTING_COMPLETE); |
2312 | } | |
2313 | ||
1de321e6 JX |
2314 | boolean_t |
2315 | dmu_objset_userobjspace_present(objset_t *os) | |
2316 | { | |
2317 | return (os->os_phys->os_flags & | |
2318 | OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE); | |
2319 | } | |
2320 | ||
9c5167d1 NF |
2321 | boolean_t |
2322 | dmu_objset_projectquota_present(objset_t *os) | |
2323 | { | |
2324 | return (os->os_phys->os_flags & | |
2325 | OBJSET_FLAG_PROJECTQUOTA_COMPLETE); | |
2326 | } | |
2327 | ||
1de321e6 JX |
2328 | static int |
2329 | dmu_objset_space_upgrade(objset_t *os) | |
9babb374 BB |
2330 | { |
2331 | uint64_t obj; | |
2332 | int err = 0; | |
2333 | ||
9babb374 BB |
2334 | /* |
2335 | * We simply need to mark every object dirty, so that it will be | |
2336 | * synced out and now accounted. If this is called | |
2337 | * concurrently, or if we already did some work before crashing, | |
2338 | * that's fine, since we track each object's accounted state | |
2339 | * independently. | |
2340 | */ | |
2341 | ||
2342 | for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { | |
45d1cae3 | 2343 | dmu_tx_t *tx; |
9babb374 BB |
2344 | dmu_buf_t *db; |
2345 | int objerr; | |
2346 | ||
1de321e6 JX |
2347 | mutex_enter(&os->os_upgrade_lock); |
2348 | if (os->os_upgrade_exit) | |
2349 | err = SET_ERROR(EINTR); | |
2350 | mutex_exit(&os->os_upgrade_lock); | |
2351 | if (err != 0) | |
2352 | return (err); | |
2353 | ||
9babb374 | 2354 | if (issig(JUSTLOOKING) && issig(FORREAL)) |
2e528b49 | 2355 | return (SET_ERROR(EINTR)); |
9babb374 BB |
2356 | |
2357 | objerr = dmu_bonus_hold(os, obj, FTAG, &db); | |
13fe0198 | 2358 | if (objerr != 0) |
9babb374 | 2359 | continue; |
45d1cae3 | 2360 | tx = dmu_tx_create(os); |
9babb374 BB |
2361 | dmu_tx_hold_bonus(tx, obj); |
2362 | objerr = dmu_tx_assign(tx, TXG_WAIT); | |
13fe0198 | 2363 | if (objerr != 0) { |
d22323e8 | 2364 | dmu_buf_rele(db, FTAG); |
9babb374 BB |
2365 | dmu_tx_abort(tx); |
2366 | continue; | |
2367 | } | |
2368 | dmu_buf_will_dirty(db, tx); | |
2369 | dmu_buf_rele(db, FTAG); | |
2370 | dmu_tx_commit(tx); | |
2371 | } | |
1de321e6 JX |
2372 | return (0); |
2373 | } | |
2374 | ||
4072f465 | 2375 | static int |
2376 | dmu_objset_userspace_upgrade_cb(objset_t *os) | |
1de321e6 JX |
2377 | { |
2378 | int err = 0; | |
2379 | ||
2380 | if (dmu_objset_userspace_present(os)) | |
2381 | return (0); | |
2382 | if (dmu_objset_is_snapshot(os)) | |
2383 | return (SET_ERROR(EINVAL)); | |
2384 | if (!dmu_objset_userused_enabled(os)) | |
2385 | return (SET_ERROR(ENOTSUP)); | |
2386 | ||
2387 | err = dmu_objset_space_upgrade(os); | |
2388 | if (err) | |
2389 | return (err); | |
9babb374 | 2390 | |
428870ff | 2391 | os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; |
9babb374 BB |
2392 | txg_wait_synced(dmu_objset_pool(os), 0); |
2393 | return (0); | |
2394 | } | |
2395 | ||
4072f465 | 2396 | void |
2397 | dmu_objset_userspace_upgrade(objset_t *os) | |
2398 | { | |
2399 | dmu_objset_upgrade(os, dmu_objset_userspace_upgrade_cb); | |
2400 | } | |
2401 | ||
1de321e6 | 2402 | static int |
9c5167d1 | 2403 | dmu_objset_id_quota_upgrade_cb(objset_t *os) |
1de321e6 JX |
2404 | { |
2405 | int err = 0; | |
2406 | ||
9c5167d1 NF |
2407 | if (dmu_objset_userobjspace_present(os) && |
2408 | dmu_objset_projectquota_present(os)) | |
1de321e6 JX |
2409 | return (0); |
2410 | if (dmu_objset_is_snapshot(os)) | |
2411 | return (SET_ERROR(EINVAL)); | |
4072f465 | 2412 | if (!dmu_objset_userused_enabled(os)) |
1de321e6 | 2413 | return (SET_ERROR(ENOTSUP)); |
9c5167d1 NF |
2414 | if (!dmu_objset_projectquota_enabled(os) && |
2415 | dmu_objset_userobjspace_present(os)) | |
2416 | return (SET_ERROR(ENOTSUP)); | |
1de321e6 | 2417 | |
4072f465 | 2418 | if (dmu_objset_userobjused_enabled(os)) |
2419 | dmu_objset_ds(os)->ds_feature_activation[ | |
2420 | SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE; | |
9c5167d1 | 2421 | if (dmu_objset_projectquota_enabled(os)) |
d52d80b7 PD |
2422 | dmu_objset_ds(os)->ds_feature_activation[ |
2423 | SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE; | |
1de321e6 JX |
2424 | |
2425 | err = dmu_objset_space_upgrade(os); | |
2426 | if (err) | |
2427 | return (err); | |
2428 | ||
4072f465 | 2429 | os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; |
2430 | if (dmu_objset_userobjused_enabled(os)) | |
2431 | os->os_flags |= OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE; | |
9c5167d1 NF |
2432 | if (dmu_objset_projectquota_enabled(os)) |
2433 | os->os_flags |= OBJSET_FLAG_PROJECTQUOTA_COMPLETE; | |
2434 | ||
1de321e6 JX |
2435 | txg_wait_synced(dmu_objset_pool(os), 0); |
2436 | return (0); | |
2437 | } | |
2438 | ||
2439 | void | |
9c5167d1 | 2440 | dmu_objset_id_quota_upgrade(objset_t *os) |
1de321e6 | 2441 | { |
9c5167d1 | 2442 | dmu_objset_upgrade(os, dmu_objset_id_quota_upgrade_cb); |
1de321e6 JX |
2443 | } |
2444 | ||
126ae9f4 JX |
2445 | boolean_t |
2446 | dmu_objset_userobjspace_upgradable(objset_t *os) | |
2447 | { | |
2448 | return (dmu_objset_type(os) == DMU_OST_ZFS && | |
2449 | !dmu_objset_is_snapshot(os) && | |
2450 | dmu_objset_userobjused_enabled(os) && | |
bb1be77a | 2451 | !dmu_objset_userobjspace_present(os) && |
2452 | spa_writeable(dmu_objset_spa(os))); | |
126ae9f4 JX |
2453 | } |
2454 | ||
9c5167d1 NF |
2455 | boolean_t |
2456 | dmu_objset_projectquota_upgradable(objset_t *os) | |
2457 | { | |
2458 | return (dmu_objset_type(os) == DMU_OST_ZFS && | |
2459 | !dmu_objset_is_snapshot(os) && | |
2460 | dmu_objset_projectquota_enabled(os) && | |
bb1be77a | 2461 | !dmu_objset_projectquota_present(os) && |
2462 | spa_writeable(dmu_objset_spa(os))); | |
9c5167d1 NF |
2463 | } |
2464 | ||
34dc7c2f BB |
2465 | void |
2466 | dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, | |
2467 | uint64_t *usedobjsp, uint64_t *availobjsp) | |
2468 | { | |
428870ff | 2469 | dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, |
34dc7c2f BB |
2470 | usedobjsp, availobjsp); |
2471 | } | |
2472 | ||
2473 | uint64_t | |
2474 | dmu_objset_fsid_guid(objset_t *os) | |
2475 | { | |
428870ff | 2476 | return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); |
34dc7c2f BB |
2477 | } |
2478 | ||
2479 | void | |
2480 | dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) | |
2481 | { | |
428870ff BB |
2482 | stat->dds_type = os->os_phys->os_type; |
2483 | if (os->os_dsl_dataset) | |
2484 | dsl_dataset_fast_stat(os->os_dsl_dataset, stat); | |
34dc7c2f BB |
2485 | } |
2486 | ||
2487 | void | |
2488 | dmu_objset_stats(objset_t *os, nvlist_t *nv) | |
2489 | { | |
428870ff BB |
2490 | ASSERT(os->os_dsl_dataset || |
2491 | os->os_phys->os_type == DMU_OST_META); | |
34dc7c2f | 2492 | |
428870ff BB |
2493 | if (os->os_dsl_dataset != NULL) |
2494 | dsl_dataset_stats(os->os_dsl_dataset, nv); | |
34dc7c2f BB |
2495 | |
2496 | dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, | |
428870ff | 2497 | os->os_phys->os_type); |
9babb374 BB |
2498 | dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, |
2499 | dmu_objset_userspace_present(os)); | |
34dc7c2f BB |
2500 | } |
2501 | ||
2502 | int | |
2503 | dmu_objset_is_snapshot(objset_t *os) | |
2504 | { | |
428870ff | 2505 | if (os->os_dsl_dataset != NULL) |
0c66c32d | 2506 | return (os->os_dsl_dataset->ds_is_snapshot); |
34dc7c2f BB |
2507 | else |
2508 | return (B_FALSE); | |
2509 | } | |
2510 | ||
2511 | int | |
4d55ea81 | 2512 | dmu_snapshot_realname(objset_t *os, const char *name, char *real, int maxlen, |
34dc7c2f BB |
2513 | boolean_t *conflict) |
2514 | { | |
428870ff | 2515 | dsl_dataset_t *ds = os->os_dsl_dataset; |
34dc7c2f BB |
2516 | uint64_t ignored; |
2517 | ||
d683ddbb | 2518 | if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) |
2e528b49 | 2519 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
2520 | |
2521 | return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, | |
d683ddbb | 2522 | dsl_dataset_phys(ds)->ds_snapnames_zapobj, name, 8, 1, &ignored, |
9b7b9cd3 | 2523 | MT_NORMALIZE, real, maxlen, conflict)); |
34dc7c2f BB |
2524 | } |
2525 | ||
2526 | int | |
2527 | dmu_snapshot_list_next(objset_t *os, int namelen, char *name, | |
2528 | uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) | |
2529 | { | |
428870ff | 2530 | dsl_dataset_t *ds = os->os_dsl_dataset; |
34dc7c2f BB |
2531 | zap_cursor_t cursor; |
2532 | zap_attribute_t attr; | |
2533 | ||
13fe0198 MA |
2534 | ASSERT(dsl_pool_config_held(dmu_objset_pool(os))); |
2535 | ||
d683ddbb | 2536 | if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0) |
2e528b49 | 2537 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
2538 | |
2539 | zap_cursor_init_serialized(&cursor, | |
2540 | ds->ds_dir->dd_pool->dp_meta_objset, | |
d683ddbb | 2541 | dsl_dataset_phys(ds)->ds_snapnames_zapobj, *offp); |
34dc7c2f BB |
2542 | |
2543 | if (zap_cursor_retrieve(&cursor, &attr) != 0) { | |
2544 | zap_cursor_fini(&cursor); | |
2e528b49 | 2545 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
2546 | } |
2547 | ||
2548 | if (strlen(attr.za_name) + 1 > namelen) { | |
2549 | zap_cursor_fini(&cursor); | |
2e528b49 | 2550 | return (SET_ERROR(ENAMETOOLONG)); |
34dc7c2f BB |
2551 | } |
2552 | ||
c9e319fa | 2553 | (void) strlcpy(name, attr.za_name, namelen); |
34dc7c2f BB |
2554 | if (idp) |
2555 | *idp = attr.za_first_integer; | |
2556 | if (case_conflict) | |
2557 | *case_conflict = attr.za_normalization_conflict; | |
2558 | zap_cursor_advance(&cursor); | |
2559 | *offp = zap_cursor_serialize(&cursor); | |
2560 | zap_cursor_fini(&cursor); | |
2561 | ||
2562 | return (0); | |
2563 | } | |
2564 | ||
ebe7e575 | 2565 | int |
6772fb67 | 2566 | dmu_snapshot_lookup(objset_t *os, const char *name, uint64_t *value) |
ebe7e575 | 2567 | { |
d1d7e268 | 2568 | return (dsl_dataset_snap_lookup(os->os_dsl_dataset, name, value)); |
ebe7e575 BB |
2569 | } |
2570 | ||
34dc7c2f BB |
2571 | int |
2572 | dmu_dir_list_next(objset_t *os, int namelen, char *name, | |
2573 | uint64_t *idp, uint64_t *offp) | |
2574 | { | |
428870ff | 2575 | dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; |
34dc7c2f BB |
2576 | zap_cursor_t cursor; |
2577 | zap_attribute_t attr; | |
2578 | ||
2579 | /* there is no next dir on a snapshot! */ | |
428870ff | 2580 | if (os->os_dsl_dataset->ds_object != |
d683ddbb | 2581 | dsl_dir_phys(dd)->dd_head_dataset_obj) |
2e528b49 | 2582 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
2583 | |
2584 | zap_cursor_init_serialized(&cursor, | |
2585 | dd->dd_pool->dp_meta_objset, | |
d683ddbb | 2586 | dsl_dir_phys(dd)->dd_child_dir_zapobj, *offp); |
34dc7c2f BB |
2587 | |
2588 | if (zap_cursor_retrieve(&cursor, &attr) != 0) { | |
2589 | zap_cursor_fini(&cursor); | |
2e528b49 | 2590 | return (SET_ERROR(ENOENT)); |
34dc7c2f BB |
2591 | } |
2592 | ||
2593 | if (strlen(attr.za_name) + 1 > namelen) { | |
2594 | zap_cursor_fini(&cursor); | |
2e528b49 | 2595 | return (SET_ERROR(ENAMETOOLONG)); |
34dc7c2f BB |
2596 | } |
2597 | ||
c9e319fa | 2598 | (void) strlcpy(name, attr.za_name, namelen); |
34dc7c2f BB |
2599 | if (idp) |
2600 | *idp = attr.za_first_integer; | |
2601 | zap_cursor_advance(&cursor); | |
2602 | *offp = zap_cursor_serialize(&cursor); | |
2603 | zap_cursor_fini(&cursor); | |
2604 | ||
2605 | return (0); | |
2606 | } | |
2607 | ||
9c43027b AJ |
2608 | typedef struct dmu_objset_find_ctx { |
2609 | taskq_t *dc_tq; | |
2610 | dsl_pool_t *dc_dp; | |
2611 | uint64_t dc_ddobj; | |
1149ba64 | 2612 | char *dc_ddname; /* last component of ddobj's name */ |
9c43027b AJ |
2613 | int (*dc_func)(dsl_pool_t *, dsl_dataset_t *, void *); |
2614 | void *dc_arg; | |
2615 | int dc_flags; | |
2616 | kmutex_t *dc_error_lock; | |
2617 | int *dc_error; | |
2618 | } dmu_objset_find_ctx_t; | |
2619 | ||
2620 | static void | |
2621 | dmu_objset_find_dp_impl(dmu_objset_find_ctx_t *dcp) | |
b128c09f | 2622 | { |
9c43027b | 2623 | dsl_pool_t *dp = dcp->dc_dp; |
13fe0198 MA |
2624 | dsl_dir_t *dd; |
2625 | dsl_dataset_t *ds; | |
2626 | zap_cursor_t zc; | |
2627 | zap_attribute_t *attr; | |
2628 | uint64_t thisobj; | |
9c43027b | 2629 | int err = 0; |
13fe0198 | 2630 | |
9c43027b AJ |
2631 | /* don't process if there already was an error */ |
2632 | if (*dcp->dc_error != 0) | |
2633 | goto out; | |
13fe0198 | 2634 | |
1149ba64 GM |
2635 | /* |
2636 | * Note: passing the name (dc_ddname) here is optional, but it | |
2637 | * improves performance because we don't need to call | |
2638 | * zap_value_search() to determine the name. | |
2639 | */ | |
2640 | err = dsl_dir_hold_obj(dp, dcp->dc_ddobj, dcp->dc_ddname, FTAG, &dd); | |
13fe0198 | 2641 | if (err != 0) |
9c43027b | 2642 | goto out; |
13fe0198 MA |
2643 | |
2644 | /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ | |
2645 | if (dd->dd_myname[0] == '$') { | |
2646 | dsl_dir_rele(dd, FTAG); | |
9c43027b | 2647 | goto out; |
13fe0198 MA |
2648 | } |
2649 | ||
d683ddbb | 2650 | thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; |
79c76d5b | 2651 | attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); |
13fe0198 MA |
2652 | |
2653 | /* | |
2654 | * Iterate over all children. | |
2655 | */ | |
9c43027b | 2656 | if (dcp->dc_flags & DS_FIND_CHILDREN) { |
13fe0198 | 2657 | for (zap_cursor_init(&zc, dp->dp_meta_objset, |
d683ddbb | 2658 | dsl_dir_phys(dd)->dd_child_dir_zapobj); |
13fe0198 MA |
2659 | zap_cursor_retrieve(&zc, attr) == 0; |
2660 | (void) zap_cursor_advance(&zc)) { | |
2661 | ASSERT3U(attr->za_integer_length, ==, | |
2662 | sizeof (uint64_t)); | |
2663 | ASSERT3U(attr->za_num_integers, ==, 1); | |
2664 | ||
1c27024e | 2665 | dmu_objset_find_ctx_t *child_dcp = |
1149ba64 | 2666 | kmem_alloc(sizeof (*child_dcp), KM_SLEEP); |
9c43027b AJ |
2667 | *child_dcp = *dcp; |
2668 | child_dcp->dc_ddobj = attr->za_first_integer; | |
1149ba64 | 2669 | child_dcp->dc_ddname = spa_strdup(attr->za_name); |
9c43027b AJ |
2670 | if (dcp->dc_tq != NULL) |
2671 | (void) taskq_dispatch(dcp->dc_tq, | |
2672 | dmu_objset_find_dp_cb, child_dcp, TQ_SLEEP); | |
2673 | else | |
2674 | dmu_objset_find_dp_impl(child_dcp); | |
13fe0198 MA |
2675 | } |
2676 | zap_cursor_fini(&zc); | |
13fe0198 MA |
2677 | } |
2678 | ||
2679 | /* | |
2680 | * Iterate over all snapshots. | |
2681 | */ | |
9c43027b | 2682 | if (dcp->dc_flags & DS_FIND_SNAPSHOTS) { |
13fe0198 MA |
2683 | dsl_dataset_t *ds; |
2684 | err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); | |
2685 | ||
2686 | if (err == 0) { | |
d683ddbb JG |
2687 | uint64_t snapobj; |
2688 | ||
2689 | snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; | |
13fe0198 MA |
2690 | dsl_dataset_rele(ds, FTAG); |
2691 | ||
2692 | for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); | |
2693 | zap_cursor_retrieve(&zc, attr) == 0; | |
2694 | (void) zap_cursor_advance(&zc)) { | |
2695 | ASSERT3U(attr->za_integer_length, ==, | |
2696 | sizeof (uint64_t)); | |
2697 | ASSERT3U(attr->za_num_integers, ==, 1); | |
2698 | ||
2699 | err = dsl_dataset_hold_obj(dp, | |
2700 | attr->za_first_integer, FTAG, &ds); | |
2701 | if (err != 0) | |
2702 | break; | |
9c43027b | 2703 | err = dcp->dc_func(dp, ds, dcp->dc_arg); |
13fe0198 MA |
2704 | dsl_dataset_rele(ds, FTAG); |
2705 | if (err != 0) | |
2706 | break; | |
2707 | } | |
2708 | zap_cursor_fini(&zc); | |
2709 | } | |
2710 | } | |
2711 | ||
13fe0198 MA |
2712 | kmem_free(attr, sizeof (zap_attribute_t)); |
2713 | ||
1149ba64 GM |
2714 | if (err != 0) { |
2715 | dsl_dir_rele(dd, FTAG); | |
9c43027b | 2716 | goto out; |
1149ba64 | 2717 | } |
13fe0198 MA |
2718 | |
2719 | /* | |
2720 | * Apply to self. | |
2721 | */ | |
2722 | err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); | |
1149ba64 GM |
2723 | |
2724 | /* | |
2725 | * Note: we hold the dir while calling dsl_dataset_hold_obj() so | |
2726 | * that the dir will remain cached, and we won't have to re-instantiate | |
2727 | * it (which could be expensive due to finding its name via | |
2728 | * zap_value_search()). | |
2729 | */ | |
2730 | dsl_dir_rele(dd, FTAG); | |
13fe0198 | 2731 | if (err != 0) |
9c43027b AJ |
2732 | goto out; |
2733 | err = dcp->dc_func(dp, ds, dcp->dc_arg); | |
13fe0198 | 2734 | dsl_dataset_rele(ds, FTAG); |
9c43027b AJ |
2735 | |
2736 | out: | |
2737 | if (err != 0) { | |
2738 | mutex_enter(dcp->dc_error_lock); | |
2739 | /* only keep first error */ | |
2740 | if (*dcp->dc_error == 0) | |
2741 | *dcp->dc_error = err; | |
2742 | mutex_exit(dcp->dc_error_lock); | |
2743 | } | |
2744 | ||
1149ba64 GM |
2745 | if (dcp->dc_ddname != NULL) |
2746 | spa_strfree(dcp->dc_ddname); | |
9c43027b AJ |
2747 | kmem_free(dcp, sizeof (*dcp)); |
2748 | } | |
2749 | ||
2750 | static void | |
2751 | dmu_objset_find_dp_cb(void *arg) | |
2752 | { | |
2753 | dmu_objset_find_ctx_t *dcp = arg; | |
2754 | dsl_pool_t *dp = dcp->dc_dp; | |
2755 | ||
5e8cd5d1 AJ |
2756 | /* |
2757 | * We need to get a pool_config_lock here, as there are several | |
e1cfd73f | 2758 | * assert(pool_config_held) down the stack. Getting a lock via |
5e8cd5d1 AJ |
2759 | * dsl_pool_config_enter is risky, as it might be stalled by a |
2760 | * pending writer. This would deadlock, as the write lock can | |
2761 | * only be granted when our parent thread gives up the lock. | |
2762 | * The _prio interface gives us priority over a pending writer. | |
2763 | */ | |
2764 | dsl_pool_config_enter_prio(dp, FTAG); | |
9c43027b AJ |
2765 | |
2766 | dmu_objset_find_dp_impl(dcp); | |
2767 | ||
2768 | dsl_pool_config_exit(dp, FTAG); | |
2769 | } | |
2770 | ||
2771 | /* | |
2772 | * Find objsets under and including ddobj, call func(ds) on each. | |
2773 | * The order for the enumeration is completely undefined. | |
2774 | * func is called with dsl_pool_config held. | |
2775 | */ | |
2776 | int | |
2777 | dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj, | |
2778 | int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags) | |
2779 | { | |
2780 | int error = 0; | |
2781 | taskq_t *tq = NULL; | |
2782 | int ntasks; | |
2783 | dmu_objset_find_ctx_t *dcp; | |
2784 | kmutex_t err_lock; | |
2785 | ||
2786 | mutex_init(&err_lock, NULL, MUTEX_DEFAULT, NULL); | |
2787 | dcp = kmem_alloc(sizeof (*dcp), KM_SLEEP); | |
2788 | dcp->dc_tq = NULL; | |
2789 | dcp->dc_dp = dp; | |
2790 | dcp->dc_ddobj = ddobj; | |
1149ba64 | 2791 | dcp->dc_ddname = NULL; |
9c43027b AJ |
2792 | dcp->dc_func = func; |
2793 | dcp->dc_arg = arg; | |
2794 | dcp->dc_flags = flags; | |
2795 | dcp->dc_error_lock = &err_lock; | |
2796 | dcp->dc_error = &error; | |
2797 | ||
2798 | if ((flags & DS_FIND_SERIALIZE) || dsl_pool_config_held_writer(dp)) { | |
2799 | /* | |
2800 | * In case a write lock is held we can't make use of | |
2801 | * parallelism, as down the stack of the worker threads | |
2802 | * the lock is asserted via dsl_pool_config_held. | |
2803 | * In case of a read lock this is solved by getting a read | |
2804 | * lock in each worker thread, which isn't possible in case | |
2805 | * of a writer lock. So we fall back to the synchronous path | |
2806 | * here. | |
2807 | * In the future it might be possible to get some magic into | |
2808 | * dsl_pool_config_held in a way that it returns true for | |
2809 | * the worker threads so that a single lock held from this | |
2810 | * thread suffices. For now, stay single threaded. | |
2811 | */ | |
2812 | dmu_objset_find_dp_impl(dcp); | |
e5676636 | 2813 | mutex_destroy(&err_lock); |
9c43027b AJ |
2814 | |
2815 | return (error); | |
2816 | } | |
2817 | ||
2818 | ntasks = dmu_find_threads; | |
2819 | if (ntasks == 0) | |
2820 | ntasks = vdev_count_leaves(dp->dp_spa) * 4; | |
1229323d | 2821 | tq = taskq_create("dmu_objset_find", ntasks, maxclsyspri, ntasks, |
9c43027b AJ |
2822 | INT_MAX, 0); |
2823 | if (tq == NULL) { | |
2824 | kmem_free(dcp, sizeof (*dcp)); | |
e5676636 BB |
2825 | mutex_destroy(&err_lock); |
2826 | ||
9c43027b AJ |
2827 | return (SET_ERROR(ENOMEM)); |
2828 | } | |
2829 | dcp->dc_tq = tq; | |
2830 | ||
2831 | /* dcp will be freed by task */ | |
2832 | (void) taskq_dispatch(tq, dmu_objset_find_dp_cb, dcp, TQ_SLEEP); | |
2833 | ||
2834 | /* | |
2835 | * PORTING: this code relies on the property of taskq_wait to wait | |
2836 | * until no more tasks are queued and no more tasks are active. As | |
2837 | * we always queue new tasks from within other tasks, task_wait | |
2838 | * reliably waits for the full recursion to finish, even though we | |
2839 | * enqueue new tasks after taskq_wait has been called. | |
2840 | * On platforms other than illumos, taskq_wait may not have this | |
2841 | * property. | |
2842 | */ | |
2843 | taskq_wait(tq); | |
2844 | taskq_destroy(tq); | |
2845 | mutex_destroy(&err_lock); | |
2846 | ||
2847 | return (error); | |
b128c09f BB |
2848 | } |
2849 | ||
2850 | /* | |
13fe0198 MA |
2851 | * Find all objsets under name, and for each, call 'func(child_name, arg)'. |
2852 | * The dp_config_rwlock must not be held when this is called, and it | |
2853 | * will not be held when the callback is called. | |
2854 | * Therefore this function should only be used when the pool is not changing | |
2855 | * (e.g. in syncing context), or the callback can deal with the possible races. | |
b128c09f | 2856 | */ |
13fe0198 MA |
2857 | static int |
2858 | dmu_objset_find_impl(spa_t *spa, const char *name, | |
2859 | int func(const char *, void *), void *arg, int flags) | |
34dc7c2f BB |
2860 | { |
2861 | dsl_dir_t *dd; | |
13fe0198 | 2862 | dsl_pool_t *dp = spa_get_dsl(spa); |
b128c09f | 2863 | dsl_dataset_t *ds; |
34dc7c2f BB |
2864 | zap_cursor_t zc; |
2865 | zap_attribute_t *attr; | |
2866 | char *child; | |
b128c09f BB |
2867 | uint64_t thisobj; |
2868 | int err; | |
34dc7c2f | 2869 | |
13fe0198 MA |
2870 | dsl_pool_config_enter(dp, FTAG); |
2871 | ||
2872 | err = dsl_dir_hold(dp, name, FTAG, &dd, NULL); | |
2873 | if (err != 0) { | |
2874 | dsl_pool_config_exit(dp, FTAG); | |
34dc7c2f | 2875 | return (err); |
13fe0198 | 2876 | } |
34dc7c2f | 2877 | |
b128c09f BB |
2878 | /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ |
2879 | if (dd->dd_myname[0] == '$') { | |
13fe0198 MA |
2880 | dsl_dir_rele(dd, FTAG); |
2881 | dsl_pool_config_exit(dp, FTAG); | |
b128c09f BB |
2882 | return (0); |
2883 | } | |
2884 | ||
d683ddbb | 2885 | thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj; |
79c76d5b | 2886 | attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); |
34dc7c2f BB |
2887 | |
2888 | /* | |
2889 | * Iterate over all children. | |
2890 | */ | |
2891 | if (flags & DS_FIND_CHILDREN) { | |
b128c09f | 2892 | for (zap_cursor_init(&zc, dp->dp_meta_objset, |
d683ddbb | 2893 | dsl_dir_phys(dd)->dd_child_dir_zapobj); |
34dc7c2f BB |
2894 | zap_cursor_retrieve(&zc, attr) == 0; |
2895 | (void) zap_cursor_advance(&zc)) { | |
13fe0198 MA |
2896 | ASSERT3U(attr->za_integer_length, ==, |
2897 | sizeof (uint64_t)); | |
2898 | ASSERT3U(attr->za_num_integers, ==, 1); | |
34dc7c2f | 2899 | |
428870ff | 2900 | child = kmem_asprintf("%s/%s", name, attr->za_name); |
13fe0198 MA |
2901 | dsl_pool_config_exit(dp, FTAG); |
2902 | err = dmu_objset_find_impl(spa, child, | |
2903 | func, arg, flags); | |
2904 | dsl_pool_config_enter(dp, FTAG); | |
e4f5fa12 | 2905 | kmem_strfree(child); |
13fe0198 | 2906 | if (err != 0) |
34dc7c2f BB |
2907 | break; |
2908 | } | |
2909 | zap_cursor_fini(&zc); | |
2910 | ||
13fe0198 MA |
2911 | if (err != 0) { |
2912 | dsl_dir_rele(dd, FTAG); | |
2913 | dsl_pool_config_exit(dp, FTAG); | |
34dc7c2f BB |
2914 | kmem_free(attr, sizeof (zap_attribute_t)); |
2915 | return (err); | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | /* | |
2920 | * Iterate over all snapshots. | |
2921 | */ | |
b128c09f | 2922 | if (flags & DS_FIND_SNAPSHOTS) { |
b128c09f | 2923 | err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); |
b128c09f BB |
2924 | |
2925 | if (err == 0) { | |
d683ddbb JG |
2926 | uint64_t snapobj; |
2927 | ||
2928 | snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj; | |
b128c09f BB |
2929 | dsl_dataset_rele(ds, FTAG); |
2930 | ||
2931 | for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); | |
2932 | zap_cursor_retrieve(&zc, attr) == 0; | |
2933 | (void) zap_cursor_advance(&zc)) { | |
13fe0198 | 2934 | ASSERT3U(attr->za_integer_length, ==, |
b128c09f | 2935 | sizeof (uint64_t)); |
13fe0198 | 2936 | ASSERT3U(attr->za_num_integers, ==, 1); |
b128c09f | 2937 | |
428870ff BB |
2938 | child = kmem_asprintf("%s@%s", |
2939 | name, attr->za_name); | |
13fe0198 MA |
2940 | dsl_pool_config_exit(dp, FTAG); |
2941 | err = func(child, arg); | |
2942 | dsl_pool_config_enter(dp, FTAG); | |
e4f5fa12 | 2943 | kmem_strfree(child); |
13fe0198 | 2944 | if (err != 0) |
b128c09f BB |
2945 | break; |
2946 | } | |
2947 | zap_cursor_fini(&zc); | |
34dc7c2f | 2948 | } |
34dc7c2f BB |
2949 | } |
2950 | ||
13fe0198 | 2951 | dsl_dir_rele(dd, FTAG); |
34dc7c2f | 2952 | kmem_free(attr, sizeof (zap_attribute_t)); |
13fe0198 | 2953 | dsl_pool_config_exit(dp, FTAG); |
34dc7c2f | 2954 | |
13fe0198 | 2955 | if (err != 0) |
34dc7c2f BB |
2956 | return (err); |
2957 | ||
13fe0198 MA |
2958 | /* Apply to self. */ |
2959 | return (func(name, arg)); | |
34dc7c2f BB |
2960 | } |
2961 | ||
13fe0198 MA |
2962 | /* |
2963 | * See comment above dmu_objset_find_impl(). | |
2964 | */ | |
d164b209 | 2965 | int |
5df7e9d8 | 2966 | dmu_objset_find(const char *name, int func(const char *, void *), void *arg, |
13fe0198 | 2967 | int flags) |
d164b209 | 2968 | { |
13fe0198 MA |
2969 | spa_t *spa; |
2970 | int error; | |
d164b209 | 2971 | |
13fe0198 MA |
2972 | error = spa_open(name, &spa, FTAG); |
2973 | if (error != 0) | |
2974 | return (error); | |
2975 | error = dmu_objset_find_impl(spa, name, func, arg, flags); | |
2976 | spa_close(spa, FTAG); | |
2977 | return (error); | |
d164b209 BB |
2978 | } |
2979 | ||
ae76f45c TC |
2980 | boolean_t |
2981 | dmu_objset_incompatible_encryption_version(objset_t *os) | |
2982 | { | |
2983 | return (dsl_dir_incompatible_encryption_version( | |
2984 | os->os_dsl_dataset->ds_dir)); | |
2985 | } | |
2986 | ||
34dc7c2f BB |
2987 | void |
2988 | dmu_objset_set_user(objset_t *os, void *user_ptr) | |
2989 | { | |
428870ff BB |
2990 | ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); |
2991 | os->os_user_ptr = user_ptr; | |
34dc7c2f BB |
2992 | } |
2993 | ||
2994 | void * | |
2995 | dmu_objset_get_user(objset_t *os) | |
2996 | { | |
428870ff BB |
2997 | ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); |
2998 | return (os->os_user_ptr); | |
34dc7c2f | 2999 | } |
c28b2279 | 3000 | |
13fe0198 MA |
3001 | /* |
3002 | * Determine name of filesystem, given name of snapshot. | |
eca7b760 | 3003 | * buf must be at least ZFS_MAX_DATASET_NAME_LEN bytes |
13fe0198 MA |
3004 | */ |
3005 | int | |
3006 | dmu_fsname(const char *snapname, char *buf) | |
3007 | { | |
3008 | char *atp = strchr(snapname, '@'); | |
3009 | if (atp == NULL) | |
2e528b49 | 3010 | return (SET_ERROR(EINVAL)); |
eca7b760 | 3011 | if (atp - snapname >= ZFS_MAX_DATASET_NAME_LEN) |
2e528b49 | 3012 | return (SET_ERROR(ENAMETOOLONG)); |
13fe0198 MA |
3013 | (void) strlcpy(buf, snapname, atp - snapname + 1); |
3014 | return (0); | |
3015 | } | |
3016 | ||
3ec3bc21 | 3017 | /* |
0f8ff49e SD |
3018 | * Call when we think we're going to write/free space in open context |
3019 | * to track the amount of dirty data in the open txg, which is also the | |
3020 | * amount of memory that can not be evicted until this txg syncs. | |
3021 | * | |
3022 | * Note that there are two conditions where this can be called from | |
3023 | * syncing context: | |
3024 | * | |
3025 | * [1] When we just created the dataset, in which case we go on with | |
3026 | * updating any accounting of dirty data as usual. | |
3027 | * [2] When we are dirtying MOS data, in which case we only update the | |
3028 | * pool's accounting of dirty data. | |
3ec3bc21 BB |
3029 | */ |
3030 | void | |
3031 | dmu_objset_willuse_space(objset_t *os, int64_t space, dmu_tx_t *tx) | |
3032 | { | |
3033 | dsl_dataset_t *ds = os->os_dsl_dataset; | |
3034 | int64_t aspace = spa_get_worst_case_asize(os->os_spa, space); | |
3035 | ||
3036 | if (ds != NULL) { | |
3037 | dsl_dir_willuse_space(ds->ds_dir, aspace, tx); | |
3ec3bc21 | 3038 | } |
0f8ff49e SD |
3039 | |
3040 | dsl_pool_dirty_space(dmu_tx_pool(tx), space, tx); | |
3ec3bc21 BB |
3041 | } |
3042 | ||
93ce2b4c | 3043 | #if defined(_KERNEL) |
f0fd83be | 3044 | EXPORT_SYMBOL(dmu_objset_zil); |
c28b2279 | 3045 | EXPORT_SYMBOL(dmu_objset_pool); |
f0fd83be BB |
3046 | EXPORT_SYMBOL(dmu_objset_ds); |
3047 | EXPORT_SYMBOL(dmu_objset_type); | |
c28b2279 BB |
3048 | EXPORT_SYMBOL(dmu_objset_name); |
3049 | EXPORT_SYMBOL(dmu_objset_hold); | |
b5256303 | 3050 | EXPORT_SYMBOL(dmu_objset_hold_flags); |
c28b2279 BB |
3051 | EXPORT_SYMBOL(dmu_objset_own); |
3052 | EXPORT_SYMBOL(dmu_objset_rele); | |
b5256303 | 3053 | EXPORT_SYMBOL(dmu_objset_rele_flags); |
c28b2279 BB |
3054 | EXPORT_SYMBOL(dmu_objset_disown); |
3055 | EXPORT_SYMBOL(dmu_objset_from_ds); | |
3056 | EXPORT_SYMBOL(dmu_objset_create); | |
3057 | EXPORT_SYMBOL(dmu_objset_clone); | |
c28b2279 BB |
3058 | EXPORT_SYMBOL(dmu_objset_stats); |
3059 | EXPORT_SYMBOL(dmu_objset_fast_stat); | |
54a179e7 | 3060 | EXPORT_SYMBOL(dmu_objset_spa); |
c28b2279 BB |
3061 | EXPORT_SYMBOL(dmu_objset_space); |
3062 | EXPORT_SYMBOL(dmu_objset_fsid_guid); | |
3063 | EXPORT_SYMBOL(dmu_objset_find); | |
c28b2279 BB |
3064 | EXPORT_SYMBOL(dmu_objset_byteswap); |
3065 | EXPORT_SYMBOL(dmu_objset_evict_dbufs); | |
3066 | EXPORT_SYMBOL(dmu_objset_snap_cmtime); | |
50c957f7 | 3067 | EXPORT_SYMBOL(dmu_objset_dnodesize); |
c28b2279 BB |
3068 | |
3069 | EXPORT_SYMBOL(dmu_objset_sync); | |
3070 | EXPORT_SYMBOL(dmu_objset_is_dirty); | |
b5256303 | 3071 | EXPORT_SYMBOL(dmu_objset_create_impl_dnstats); |
c28b2279 BB |
3072 | EXPORT_SYMBOL(dmu_objset_create_impl); |
3073 | EXPORT_SYMBOL(dmu_objset_open_impl); | |
3074 | EXPORT_SYMBOL(dmu_objset_evict); | |
3075 | EXPORT_SYMBOL(dmu_objset_register_type); | |
ba67d821 | 3076 | EXPORT_SYMBOL(dmu_objset_sync_done); |
c28b2279 BB |
3077 | EXPORT_SYMBOL(dmu_objset_userquota_get_ids); |
3078 | EXPORT_SYMBOL(dmu_objset_userused_enabled); | |
3079 | EXPORT_SYMBOL(dmu_objset_userspace_upgrade); | |
3080 | EXPORT_SYMBOL(dmu_objset_userspace_present); | |
1de321e6 | 3081 | EXPORT_SYMBOL(dmu_objset_userobjused_enabled); |
126ae9f4 | 3082 | EXPORT_SYMBOL(dmu_objset_userobjspace_upgradable); |
1de321e6 | 3083 | EXPORT_SYMBOL(dmu_objset_userobjspace_present); |
9c5167d1 NF |
3084 | EXPORT_SYMBOL(dmu_objset_projectquota_enabled); |
3085 | EXPORT_SYMBOL(dmu_objset_projectquota_present); | |
3086 | EXPORT_SYMBOL(dmu_objset_projectquota_upgradable); | |
3087 | EXPORT_SYMBOL(dmu_objset_id_quota_upgrade); | |
c28b2279 | 3088 | #endif |