1 789 ahrens /* 2 789 ahrens * CDDL HEADER START 3 789 ahrens * 4 789 ahrens * The contents of this file are subject to the terms of the 5 1544 eschrock * Common Development and Distribution License (the "License"). 6 1544 eschrock * You may not use this file except in compliance with the License. 7 789 ahrens * 8 789 ahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 789 ahrens * or http://www.opensolaris.org/os/licensing. 10 789 ahrens * See the License for the specific language governing permissions 11 789 ahrens * and limitations under the License. 12 789 ahrens * 13 789 ahrens * When distributing Covered Code, include this CDDL HEADER in each 14 789 ahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 789 ahrens * If applicable, add the following below this CDDL HEADER, with the 16 789 ahrens * fields enclosed by brackets "[]" replaced with your own identifying 17 789 ahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18 789 ahrens * 19 789 ahrens * CDDL HEADER END 20 789 ahrens */ 21 789 ahrens /* 22 9355 Matthew * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 789 ahrens * Use is subject to license terms. 24 789 ahrens */ 25 789 ahrens 26 4543 marks #include <sys/cred.h> 27 789 ahrens #include <sys/zfs_context.h> 28 789 ahrens #include <sys/dmu_objset.h> 29 789 ahrens #include <sys/dsl_dir.h> 30 789 ahrens #include <sys/dsl_dataset.h> 31 789 ahrens #include <sys/dsl_prop.h> 32 789 ahrens #include <sys/dsl_pool.h> 33 2199 ahrens #include <sys/dsl_synctask.h> 34 4543 marks #include <sys/dsl_deleg.h> 35 789 ahrens #include <sys/dnode.h> 36 789 ahrens #include <sys/dbuf.h> 37 2885 ahrens #include <sys/zvol.h> 38 789 ahrens #include <sys/dmu_tx.h> 39 789 ahrens #include <sys/zap.h> 40 789 ahrens #include <sys/zil.h> 41 789 ahrens #include <sys/dmu_impl.h> 42 4543 marks #include <sys/zfs_ioctl.h> 43 11165 Matthew #include <sys/sunddi.h> 44 789 ahrens 45 789 ahrens spa_t * 46 789 ahrens dmu_objset_spa(objset_t *os) 47 789 ahrens { 48 10298 Matthew return (os->os_spa); 49 789 ahrens } 50 789 ahrens 51 789 ahrens zilog_t * 52 789 ahrens dmu_objset_zil(objset_t *os) 53 789 ahrens { 54 10298 Matthew return (os->os_zil); 55 789 ahrens } 56 789 ahrens 57 789 ahrens dsl_pool_t * 58 789 ahrens dmu_objset_pool(objset_t *os) 59 789 ahrens { 60 789 ahrens dsl_dataset_t *ds; 61 789 ahrens 62 10298 Matthew if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir) 63 789 ahrens return (ds->ds_dir->dd_pool); 64 789 ahrens else 65 10298 Matthew return (spa_get_dsl(os->os_spa)); 66 789 ahrens } 67 789 ahrens 68 789 ahrens dsl_dataset_t * 69 789 ahrens dmu_objset_ds(objset_t *os) 70 789 ahrens { 71 10298 Matthew return (os->os_dsl_dataset); 72 789 ahrens } 73 789 ahrens 74 789 ahrens dmu_objset_type_t 75 789 ahrens dmu_objset_type(objset_t *os) 76 789 ahrens { 77 10298 Matthew return (os->os_phys->os_type); 78 789 ahrens } 79 789 ahrens 80 789 ahrens void 81 789 ahrens dmu_objset_name(objset_t *os, char *buf) 82 789 ahrens { 83 10298 Matthew dsl_dataset_name(os->os_dsl_dataset, buf); 84 789 ahrens } 85 789 ahrens 86 789 ahrens uint64_t 87 789 ahrens dmu_objset_id(objset_t *os) 88 789 ahrens { 89 10298 Matthew dsl_dataset_t *ds = os->os_dsl_dataset; 90 789 ahrens 91 789 ahrens return (ds ? ds->ds_object : 0); 92 789 ahrens } 93 789 ahrens 94 10310 Neil uint64_t 95 10310 Neil dmu_objset_logbias(objset_t *os) 96 10310 Neil { 97 10310 Neil return (os->os_logbias); 98 10310 Neil } 99 10310 Neil 100 789 ahrens static void 101 789 ahrens checksum_changed_cb(void *arg, uint64_t newval) 102 789 ahrens { 103 10298 Matthew objset_t *os = arg; 104 789 ahrens 105 789 ahrens /* 106 789 ahrens * Inheritance should have been done by now. 107 789 ahrens */ 108 789 ahrens ASSERT(newval != ZIO_CHECKSUM_INHERIT); 109 789 ahrens 110 10298 Matthew os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE); 111 789 ahrens } 112 789 ahrens 113 789 ahrens static void 114 789 ahrens compression_changed_cb(void *arg, uint64_t newval) 115 789 ahrens { 116 10298 Matthew objset_t *os = arg; 117 789 ahrens 118 789 ahrens /* 119 789 ahrens * Inheritance and range checking should have been done by now. 120 789 ahrens */ 121 789 ahrens ASSERT(newval != ZIO_COMPRESS_INHERIT); 122 789 ahrens 123 10298 Matthew os->os_compress = zio_compress_select(newval, ZIO_COMPRESS_ON_VALUE); 124 789 ahrens } 125 789 ahrens 126 3835 ahrens static void 127 3835 ahrens copies_changed_cb(void *arg, uint64_t newval) 128 3835 ahrens { 129 10298 Matthew objset_t *os = arg; 130 3835 ahrens 131 3835 ahrens /* 132 3835 ahrens * Inheritance and range checking should have been done by now. 133 3835 ahrens */ 134 3835 ahrens ASSERT(newval > 0); 135 10298 Matthew ASSERT(newval <= spa_max_replication(os->os_spa)); 136 3835 ahrens 137 10298 Matthew os->os_copies = newval; 138 3835 ahrens } 139 3835 ahrens 140 7237 ek110237 static void 141 10922 Jeff dedup_changed_cb(void *arg, uint64_t newval) 142 10922 Jeff { 143 10922 Jeff objset_t *os = arg; 144 10922 Jeff spa_t *spa = os->os_spa; 145 10922 Jeff enum zio_checksum checksum; 146 10922 Jeff 147 10922 Jeff /* 148 10922 Jeff * Inheritance should have been done by now. 149 10922 Jeff */ 150 10922 Jeff ASSERT(newval != ZIO_CHECKSUM_INHERIT); 151 10922 Jeff 152 10922 Jeff checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF); 153 10922 Jeff 154 10922 Jeff os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK; 155 10922 Jeff os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY); 156 10922 Jeff } 157 10922 Jeff 158 10922 Jeff static void 159 7237 ek110237 primary_cache_changed_cb(void *arg, uint64_t newval) 160 7237 ek110237 { 161 10298 Matthew objset_t *os = arg; 162 7237 ek110237 163 7237 ek110237 /* 164 7237 ek110237 * Inheritance and range checking should have been done by now. 165 7237 ek110237 */ 166 7237 ek110237 ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 167 7237 ek110237 newval == ZFS_CACHE_METADATA); 168 7237 ek110237 169 10298 Matthew os->os_primary_cache = newval; 170 7237 ek110237 } 171 7237 ek110237 172 7237 ek110237 static void 173 7237 ek110237 secondary_cache_changed_cb(void *arg, uint64_t newval) 174 7237 ek110237 { 175 10298 Matthew objset_t *os = arg; 176 7237 ek110237 177 7237 ek110237 /* 178 7237 ek110237 * Inheritance and range checking should have been done by now. 179 7237 ek110237 */ 180 7237 ek110237 ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE || 181 7237 ek110237 newval == ZFS_CACHE_METADATA); 182 7237 ek110237 183 10298 Matthew os->os_secondary_cache = newval; 184 10310 Neil } 185 10310 Neil 186 10310 Neil static void 187 10310 Neil logbias_changed_cb(void *arg, uint64_t newval) 188 10310 Neil { 189 10310 Neil objset_t *os = arg; 190 10310 Neil 191 10310 Neil ASSERT(newval == ZFS_LOGBIAS_LATENCY || 192 10310 Neil newval == ZFS_LOGBIAS_THROUGHPUT); 193 10310 Neil os->os_logbias = newval; 194 10310 Neil if (os->os_zil) 195 10310 Neil zil_set_logbias(os->os_zil, newval); 196 7237 ek110237 } 197 7237 ek110237 198 789 ahrens void 199 789 ahrens dmu_objset_byteswap(void *buf, size_t size) 200 789 ahrens { 201 789 ahrens objset_phys_t *osp = buf; 202 789 ahrens 203 9396 Matthew ASSERT(size == OBJSET_OLD_PHYS_SIZE || size == sizeof (objset_phys_t)); 204 789 ahrens dnode_byteswap(&osp->os_meta_dnode); 205 789 ahrens byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t)); 206 789 ahrens osp->os_type = BSWAP_64(osp->os_type); 207 9396 Matthew osp->os_flags = BSWAP_64(osp->os_flags); 208 9396 Matthew if (size == sizeof (objset_phys_t)) { 209 9396 Matthew dnode_byteswap(&osp->os_userused_dnode); 210 9396 Matthew dnode_byteswap(&osp->os_groupused_dnode); 211 9396 Matthew } 212 789 ahrens } 213 789 ahrens 214 1544 eschrock int 215 1544 eschrock dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 216 10298 Matthew objset_t **osp) 217 789 ahrens { 218 10298 Matthew objset_t *os; 219 7046 ahrens int i, err; 220 4787 ahrens 221 4787 ahrens ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock)); 222 789 ahrens 223 10298 Matthew os = kmem_zalloc(sizeof (objset_t), KM_SLEEP); 224 10298 Matthew os->os_dsl_dataset = ds; 225 10298 Matthew os->os_spa = spa; 226 10298 Matthew os->os_rootbp = bp; 227 10298 Matthew if (!BP_IS_HOLE(os->os_rootbp)) { 228 2391 maybee uint32_t aflags = ARC_WAIT; 229 1544 eschrock zbookmark_t zb; 230 10922 Jeff SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET, 231 10922 Jeff ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 232 10922 Jeff 233 10298 Matthew if (DMU_OS_IS_L2CACHEABLE(os)) 234 7237 ek110237 aflags |= ARC_L2CACHE; 235 1544 eschrock 236 10298 Matthew dprintf_bp(os->os_rootbp, "reading %s", ""); 237 7046 ahrens /* 238 7046 ahrens * NB: when bprewrite scrub can change the bp, 239 7046 ahrens * and this is called from dmu_objset_open_ds_os, the bp 240 7046 ahrens * could change, and we'll need a lock. 241 7046 ahrens */ 242 10298 Matthew err = arc_read_nolock(NULL, spa, os->os_rootbp, 243 10298 Matthew arc_getbuf_func, &os->os_phys_buf, 244 2391 maybee ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); 245 1544 eschrock if (err) { 246 10298 Matthew kmem_free(os, sizeof (objset_t)); 247 7294 perrin /* convert checksum errors into IO errors */ 248 7294 perrin if (err == ECKSUM) 249 7294 perrin err = EIO; 250 1544 eschrock return (err); 251 1544 eschrock } 252 9396 Matthew 253 9396 Matthew /* Increase the blocksize if we are permitted. */ 254 9396 Matthew if (spa_version(spa) >= SPA_VERSION_USERSPACE && 255 10298 Matthew arc_buf_size(os->os_phys_buf) < sizeof (objset_phys_t)) { 256 9396 Matthew arc_buf_t *buf = arc_buf_alloc(spa, 257 10298 Matthew sizeof (objset_phys_t), &os->os_phys_buf, 258 9396 Matthew ARC_BUFC_METADATA); 259 9396 Matthew bzero(buf->b_data, sizeof (objset_phys_t)); 260 10298 Matthew bcopy(os->os_phys_buf->b_data, buf->b_data, 261 10298 Matthew arc_buf_size(os->os_phys_buf)); 262 10298 Matthew (void) arc_buf_remove_ref(os->os_phys_buf, 263 10298 Matthew &os->os_phys_buf); 264 10298 Matthew os->os_phys_buf = buf; 265 9396 Matthew } 266 9396 Matthew 267 10298 Matthew os->os_phys = os->os_phys_buf->b_data; 268 10298 Matthew os->os_flags = os->os_phys->os_flags; 269 789 ahrens } else { 270 9396 Matthew int size = spa_version(spa) >= SPA_VERSION_USERSPACE ? 271 9396 Matthew sizeof (objset_phys_t) : OBJSET_OLD_PHYS_SIZE; 272 10298 Matthew os->os_phys_buf = arc_buf_alloc(spa, size, 273 10298 Matthew &os->os_phys_buf, ARC_BUFC_METADATA); 274 10298 Matthew os->os_phys = os->os_phys_buf->b_data; 275 10298 Matthew bzero(os->os_phys, size); 276 789 ahrens } 277 789 ahrens 278 789 ahrens /* 279 789 ahrens * Note: the changed_cb will be called once before the register 280 789 ahrens * func returns, thus changing the checksum/compression from the 281 7237 ek110237 * default (fletcher2/off). Snapshots don't need to know about 282 7237 ek110237 * checksum/compression/copies. 283 789 ahrens */ 284 7237 ek110237 if (ds) { 285 7237 ek110237 err = dsl_prop_register(ds, "primarycache", 286 10298 Matthew primary_cache_changed_cb, os); 287 1544 eschrock if (err == 0) 288 7237 ek110237 err = dsl_prop_register(ds, "secondarycache", 289 10298 Matthew secondary_cache_changed_cb, os); 290 7237 ek110237 if (!dsl_dataset_is_snapshot(ds)) { 291 7237 ek110237 if (err == 0) 292 7237 ek110237 err = dsl_prop_register(ds, "checksum", 293 10298 Matthew checksum_changed_cb, os); 294 7237 ek110237 if (err == 0) 295 7237 ek110237 err = dsl_prop_register(ds, "compression", 296 10298 Matthew compression_changed_cb, os); 297 7237 ek110237 if (err == 0) 298 7237 ek110237 err = dsl_prop_register(ds, "copies", 299 10298 Matthew copies_changed_cb, os); 300 10310 Neil if (err == 0) 301 10922 Jeff err = dsl_prop_register(ds, "dedup", 302 10922 Jeff dedup_changed_cb, os); 303 10922 Jeff if (err == 0) 304 10310 Neil err = dsl_prop_register(ds, "logbias", 305 10310 Neil logbias_changed_cb, os); 306 7237 ek110237 } 307 1544 eschrock if (err) { 308 10298 Matthew VERIFY(arc_buf_remove_ref(os->os_phys_buf, 309 10298 Matthew &os->os_phys_buf) == 1); 310 10298 Matthew kmem_free(os, sizeof (objset_t)); 311 1544 eschrock return (err); 312 1544 eschrock } 313 2082 eschrock } else if (ds == NULL) { 314 789 ahrens /* It's the meta-objset. */ 315 10298 Matthew os->os_checksum = ZIO_CHECKSUM_FLETCHER_4; 316 10298 Matthew os->os_compress = ZIO_COMPRESS_LZJB; 317 10298 Matthew os->os_copies = spa_max_replication(spa); 318 10922 Jeff os->os_dedup_checksum = ZIO_CHECKSUM_OFF; 319 10922 Jeff os->os_dedup_verify = 0; 320 10922 Jeff os->os_logbias = 0; 321 10298 Matthew os->os_primary_cache = ZFS_CACHE_ALL; 322 10298 Matthew os->os_secondary_cache = ZFS_CACHE_ALL; 323 789 ahrens } 324 1544 eschrock 325 10298 Matthew os->os_zil_header = os->os_phys->os_zil_header; 326 10298 Matthew os->os_zil = zil_alloc(os, &os->os_zil_header); 327 789 ahrens 328 789 ahrens for (i = 0; i < TXG_SIZE; i++) { 329 10298 Matthew list_create(&os->os_dirty_dnodes[i], sizeof (dnode_t), 330 789 ahrens offsetof(dnode_t, dn_dirty_link[i])); 331 10298 Matthew list_create(&os->os_free_dnodes[i], sizeof (dnode_t), 332 789 ahrens offsetof(dnode_t, dn_dirty_link[i])); 333 789 ahrens } 334 10298 Matthew list_create(&os->os_dnodes, sizeof (dnode_t), 335 789 ahrens offsetof(dnode_t, dn_link)); 336 10298 Matthew list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t), 337 789 ahrens offsetof(dmu_buf_impl_t, db_link)); 338 789 ahrens 339 10298 Matthew mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL); 340 10298 Matthew mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL); 341 10298 Matthew mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL); 342 2856 nd150628 343 10298 Matthew os->os_meta_dnode = dnode_special_open(os, 344 10298 Matthew &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT); 345 10298 Matthew if (arc_buf_size(os->os_phys_buf) >= sizeof (objset_phys_t)) { 346 10298 Matthew os->os_userused_dnode = dnode_special_open(os, 347 10298 Matthew &os->os_phys->os_userused_dnode, DMU_USERUSED_OBJECT); 348 10298 Matthew os->os_groupused_dnode = dnode_special_open(os, 349 10298 Matthew &os->os_phys->os_groupused_dnode, DMU_GROUPUSED_OBJECT); 350 9396 Matthew } 351 789 ahrens 352 4787 ahrens /* 353 4787 ahrens * We should be the only thread trying to do this because we 354 4787 ahrens * have ds_opening_lock 355 4787 ahrens */ 356 4787 ahrens if (ds) { 357 10298 Matthew mutex_enter(&ds->ds_lock); 358 10298 Matthew ASSERT(ds->ds_objset == NULL); 359 10298 Matthew ds->ds_objset = os; 360 10298 Matthew mutex_exit(&ds->ds_lock); 361 789 ahrens } 362 789 ahrens 363 10298 Matthew *osp = os; 364 5367 ahrens return (0); 365 5367 ahrens } 366 5367 ahrens 367 5367 ahrens int 368 10298 Matthew dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp) 369 5367 ahrens { 370 10298 Matthew int err = 0; 371 5367 ahrens 372 10298 Matthew mutex_enter(&ds->ds_opening_lock); 373 10298 Matthew *osp = ds->ds_objset; 374 10298 Matthew if (*osp == NULL) { 375 10298 Matthew err = dmu_objset_open_impl(dsl_dataset_get_spa(ds), 376 10298 Matthew ds, &ds->ds_phys->ds_bp, osp); 377 10298 Matthew } 378 10298 Matthew mutex_exit(&ds->ds_opening_lock); 379 5367 ahrens return (err); 380 5367 ahrens } 381 5367 ahrens 382 789 ahrens /* called from zpl */ 383 789 ahrens int 384 10298 Matthew dmu_objset_hold(const char *name, void *tag, objset_t **osp) 385 789 ahrens { 386 789 ahrens dsl_dataset_t *ds; 387 789 ahrens int err; 388 5367 ahrens 389 10298 Matthew err = dsl_dataset_hold(name, tag, &ds); 390 10298 Matthew if (err) 391 10298 Matthew return (err); 392 789 ahrens 393 10298 Matthew err = dmu_objset_from_ds(ds, osp); 394 10298 Matthew if (err) 395 10298 Matthew dsl_dataset_rele(ds, tag); 396 10298 Matthew 397 10298 Matthew return (err); 398 10298 Matthew } 399 10298 Matthew 400 10298 Matthew /* called from zpl */ 401 10298 Matthew int 402 10298 Matthew dmu_objset_own(const char *name, dmu_objset_type_t type, 403 10298 Matthew boolean_t readonly, void *tag, objset_t **osp) 404 10298 Matthew { 405 10298 Matthew dsl_dataset_t *ds; 406 10298 Matthew int err; 407 10298 Matthew 408 10298 Matthew err = dsl_dataset_own(name, B_FALSE, tag, &ds); 409 10298 Matthew if (err) 410 10298 Matthew return (err); 411 10298 Matthew 412 10298 Matthew err = dmu_objset_from_ds(ds, osp); 413 789 ahrens if (err) { 414 10298 Matthew dsl_dataset_disown(ds, tag); 415 10588 Eric } else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) { 416 10298 Matthew dmu_objset_disown(*osp, tag); 417 10298 Matthew return (EINVAL); 418 10588 Eric } else if (!readonly && dsl_dataset_is_snapshot(ds)) { 419 10588 Eric dmu_objset_disown(*osp, tag); 420 10588 Eric return (EROFS); 421 789 ahrens } 422 5367 ahrens return (err); 423 789 ahrens } 424 789 ahrens 425 789 ahrens void 426 10298 Matthew dmu_objset_rele(objset_t *os, void *tag) 427 789 ahrens { 428 10298 Matthew dsl_dataset_rele(os->os_dsl_dataset, tag); 429 10298 Matthew } 430 6689 maybee 431 10298 Matthew void 432 10298 Matthew dmu_objset_disown(objset_t *os, void *tag) 433 10298 Matthew { 434 10298 Matthew dsl_dataset_disown(os->os_dsl_dataset, tag); 435 789 ahrens } 436 789 ahrens 437 1646 perrin int 438 4944 maybee dmu_objset_evict_dbufs(objset_t *os) 439 1544 eschrock { 440 1544 eschrock dnode_t *dn; 441 1596 ahrens 442 10298 Matthew mutex_enter(&os->os_lock); 443 1596 ahrens 444 1596 ahrens /* process the mdn last, since the other dnodes have holds on it */ 445 10298 Matthew list_remove(&os->os_dnodes, os->os_meta_dnode); 446 10298 Matthew list_insert_tail(&os->os_dnodes, os->os_meta_dnode); 447 1544 eschrock 448 1544 eschrock /* 449 1596 ahrens * Find the first dnode with holds. We have to do this dance 450 1596 ahrens * because dnode_add_ref() only works if you already have a 451 1596 ahrens * hold. If there are no holds then it has no dbufs so OK to 452 1596 ahrens * skip. 453 1544 eschrock */ 454 10298 Matthew for (dn = list_head(&os->os_dnodes); 455 4944 maybee dn && !dnode_add_ref(dn, FTAG); 456 10298 Matthew dn = list_next(&os->os_dnodes, dn)) 457 1596 ahrens continue; 458 1596 ahrens 459 1596 ahrens while (dn) { 460 1596 ahrens dnode_t *next_dn = dn; 461 1596 ahrens 462 1596 ahrens do { 463 10298 Matthew next_dn = list_next(&os->os_dnodes, next_dn); 464 4944 maybee } while (next_dn && !dnode_add_ref(next_dn, FTAG)); 465 1596 ahrens 466 10298 Matthew mutex_exit(&os->os_lock); 467 4944 maybee dnode_evict_dbufs(dn); 468 1596 ahrens dnode_rele(dn, FTAG); 469 10298 Matthew mutex_enter(&os->os_lock); 470 1596 ahrens dn = next_dn; 471 1544 eschrock } 472 10298 Matthew mutex_exit(&os->os_lock); 473 10298 Matthew return (list_head(&os->os_dnodes) != os->os_meta_dnode); 474 1544 eschrock } 475 1544 eschrock 476 1544 eschrock void 477 10298 Matthew dmu_objset_evict(objset_t *os) 478 789 ahrens { 479 10298 Matthew dsl_dataset_t *ds = os->os_dsl_dataset; 480 789 ahrens 481 10922 Jeff for (int t = 0; t < TXG_SIZE; t++) 482 10922 Jeff ASSERT(!dmu_objset_is_dirty(os, t)); 483 789 ahrens 484 7237 ek110237 if (ds) { 485 7237 ek110237 if (!dsl_dataset_is_snapshot(ds)) { 486 7237 ek110237 VERIFY(0 == dsl_prop_unregister(ds, "checksum", 487 10298 Matthew checksum_changed_cb, os)); 488 7237 ek110237 VERIFY(0 == dsl_prop_unregister(ds, "compression", 489 10298 Matthew compression_changed_cb, os)); 490 7237 ek110237 VERIFY(0 == dsl_prop_unregister(ds, "copies", 491 10298 Matthew copies_changed_cb, os)); 492 10922 Jeff VERIFY(0 == dsl_prop_unregister(ds, "dedup", 493 10922 Jeff dedup_changed_cb, os)); 494 10310 Neil VERIFY(0 == dsl_prop_unregister(ds, "logbias", 495 10310 Neil logbias_changed_cb, os)); 496 7237 ek110237 } 497 7237 ek110237 VERIFY(0 == dsl_prop_unregister(ds, "primarycache", 498 10298 Matthew primary_cache_changed_cb, os)); 499 7237 ek110237 VERIFY(0 == dsl_prop_unregister(ds, "secondarycache", 500 10298 Matthew secondary_cache_changed_cb, os)); 501 789 ahrens } 502 1544 eschrock 503 1544 eschrock /* 504 1544 eschrock * We should need only a single pass over the dnode list, since 505 1544 eschrock * nothing can be added to the list at this point. 506 1544 eschrock */ 507 10298 Matthew (void) dmu_objset_evict_dbufs(os); 508 789 ahrens 509 10298 Matthew dnode_special_close(os->os_meta_dnode); 510 10298 Matthew if (os->os_userused_dnode) { 511 10298 Matthew dnode_special_close(os->os_userused_dnode); 512 10298 Matthew dnode_special_close(os->os_groupused_dnode); 513 9396 Matthew } 514 10298 Matthew zil_free(os->os_zil); 515 789 ahrens 516 10298 Matthew ASSERT3P(list_head(&os->os_dnodes), ==, NULL); 517 789 ahrens 518 10298 Matthew VERIFY(arc_buf_remove_ref(os->os_phys_buf, &os->os_phys_buf) == 1); 519 10298 Matthew mutex_destroy(&os->os_lock); 520 10298 Matthew mutex_destroy(&os->os_obj_lock); 521 10298 Matthew mutex_destroy(&os->os_user_ptr_lock); 522 10298 Matthew kmem_free(os, sizeof (objset_t)); 523 10373 chris } 524 10373 chris 525 10373 chris timestruc_t 526 10373 chris dmu_objset_snap_cmtime(objset_t *os) 527 10373 chris { 528 10373 chris return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir)); 529 789 ahrens } 530 789 ahrens 531 789 ahrens /* called from dsl for meta-objset */ 532 10298 Matthew objset_t * 533 3547 maybee dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, 534 3547 maybee dmu_objset_type_t type, dmu_tx_t *tx) 535 789 ahrens { 536 10298 Matthew objset_t *os; 537 789 ahrens dnode_t *mdn; 538 789 ahrens 539 789 ahrens ASSERT(dmu_tx_is_syncing(tx)); 540 4787 ahrens if (ds) 541 4787 ahrens mutex_enter(&ds->ds_opening_lock); 542 10298 Matthew VERIFY(0 == dmu_objset_open_impl(spa, ds, bp, &os)); 543 4787 ahrens if (ds) 544 4787 ahrens mutex_exit(&ds->ds_opening_lock); 545 10298 Matthew mdn = os->os_meta_dnode; 546 789 ahrens 547 789 ahrens dnode_allocate(mdn, DMU_OT_DNODE, 1 << DNODE_BLOCK_SHIFT, 548 789 ahrens DN_MAX_INDBLKSHIFT, DMU_OT_NONE, 0, tx); 549 789 ahrens 550 789 ahrens /* 551 789 ahrens * We don't want to have to increase the meta-dnode's nlevels 552 789 ahrens * later, because then we could do it in quescing context while 553 789 ahrens * we are also accessing it in open context. 554 789 ahrens * 555 789 ahrens * This precaution is not necessary for the MOS (ds == NULL), 556 789 ahrens * because the MOS is only updated in syncing context. 557 789 ahrens * This is most fortunate: the MOS is the only objset that 558 789 ahrens * needs to be synced multiple times as spa_sync() iterates 559 789 ahrens * to convergence, so minimizing its dn_nlevels matters. 560 789 ahrens */ 561 1544 eschrock if (ds != NULL) { 562 1544 eschrock int levels = 1; 563 1544 eschrock 564 1544 eschrock /* 565 1544 eschrock * Determine the number of levels necessary for the meta-dnode 566 1544 eschrock * to contain DN_MAX_OBJECT dnodes. 567 1544 eschrock */ 568 1544 eschrock while ((uint64_t)mdn->dn_nblkptr << (mdn->dn_datablkshift + 569 1544 eschrock (levels - 1) * (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) < 570 1544 eschrock DN_MAX_OBJECT * sizeof (dnode_phys_t)) 571 1544 eschrock levels++; 572 1544 eschrock 573 789 ahrens mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] = 574 1544 eschrock mdn->dn_nlevels = levels; 575 1544 eschrock } 576 789 ahrens 577 789 ahrens ASSERT(type != DMU_OST_NONE); 578 789 ahrens ASSERT(type != DMU_OST_ANY); 579 789 ahrens ASSERT(type < DMU_OST_NUMTYPES); 580 10298 Matthew os->os_phys->os_type = type; 581 10298 Matthew if (dmu_objset_userused_enabled(os)) { 582 10298 Matthew os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 583 10298 Matthew os->os_flags = os->os_phys->os_flags; 584 9396 Matthew } 585 789 ahrens 586 789 ahrens dsl_dataset_dirty(ds, tx); 587 789 ahrens 588 10298 Matthew return (os); 589 789 ahrens } 590 789 ahrens 591 789 ahrens struct oscarg { 592 4543 marks void (*userfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx); 593 789 ahrens void *userarg; 594 10272 Matthew dsl_dataset_t *clone_origin; 595 789 ahrens const char *lastname; 596 789 ahrens dmu_objset_type_t type; 597 6492 timh uint64_t flags; 598 789 ahrens }; 599 789 ahrens 600 4543 marks /*ARGSUSED*/ 601 789 ahrens static int 602 2199 ahrens dmu_objset_create_check(void *arg1, void *arg2, dmu_tx_t *tx) 603 789 ahrens { 604 2199 ahrens dsl_dir_t *dd = arg1; 605 2199 ahrens struct oscarg *oa = arg2; 606 2199 ahrens objset_t *mos = dd->dd_pool->dp_meta_objset; 607 2199 ahrens int err; 608 2199 ahrens uint64_t ddobj; 609 2199 ahrens 610 2199 ahrens err = zap_lookup(mos, dd->dd_phys->dd_child_dir_zapobj, 611 2199 ahrens oa->lastname, sizeof (uint64_t), 1, &ddobj); 612 2199 ahrens if (err != ENOENT) 613 2199 ahrens return (err ? err : EEXIST); 614 2199 ahrens 615 10272 Matthew if (oa->clone_origin != NULL) { 616 10272 Matthew /* You can't clone across pools. */ 617 10272 Matthew if (oa->clone_origin->ds_dir->dd_pool != dd->dd_pool) 618 2199 ahrens return (EXDEV); 619 2199 ahrens 620 10272 Matthew /* You can only clone snapshots, not the head datasets. */ 621 10272 Matthew if (!dsl_dataset_is_snapshot(oa->clone_origin)) 622 2199 ahrens return (EINVAL); 623 2199 ahrens } 624 4543 marks 625 2199 ahrens return (0); 626 2199 ahrens } 627 2199 ahrens 628 2199 ahrens static void 629 4543 marks dmu_objset_create_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 630 2199 ahrens { 631 2199 ahrens dsl_dir_t *dd = arg1; 632 2199 ahrens struct oscarg *oa = arg2; 633 2199 ahrens uint64_t dsobj; 634 789 ahrens 635 789 ahrens ASSERT(dmu_tx_is_syncing(tx)); 636 789 ahrens 637 2199 ahrens dsobj = dsl_dataset_create_sync(dd, oa->lastname, 638 10272 Matthew oa->clone_origin, oa->flags, cr, tx); 639 789 ahrens 640 10272 Matthew if (oa->clone_origin == NULL) { 641 10272 Matthew dsl_dataset_t *ds; 642 10272 Matthew blkptr_t *bp; 643 10298 Matthew objset_t *os; 644 789 ahrens 645 10272 Matthew VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool, dsobj, 646 10272 Matthew FTAG, &ds)); 647 10272 Matthew bp = dsl_dataset_get_blkptr(ds); 648 10272 Matthew ASSERT(BP_IS_HOLE(bp)); 649 10272 Matthew 650 10298 Matthew os = dmu_objset_create_impl(dsl_dataset_get_spa(ds), 651 3547 maybee ds, bp, oa->type, tx); 652 789 ahrens 653 789 ahrens if (oa->userfunc) 654 10298 Matthew oa->userfunc(os, oa->userarg, cr, tx); 655 10272 Matthew dsl_dataset_rele(ds, FTAG); 656 789 ahrens } 657 4543 marks 658 4543 marks spa_history_internal_log(LOG_DS_CREATE, dd->dd_pool->dp_spa, 659 4543 marks tx, cr, "dataset = %llu", dsobj); 660 789 ahrens } 661 789 ahrens 662 789 ahrens int 663 10272 Matthew dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags, 664 4543 marks void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg) 665 789 ahrens { 666 2199 ahrens dsl_dir_t *pdd; 667 789 ahrens const char *tail; 668 789 ahrens int err = 0; 669 2199 ahrens struct oscarg oa = { 0 }; 670 789 ahrens 671 2199 ahrens ASSERT(strchr(name, '@') == NULL); 672 2199 ahrens err = dsl_dir_open(name, FTAG, &pdd, &tail); 673 1544 eschrock if (err) 674 1544 eschrock return (err); 675 789 ahrens if (tail == NULL) { 676 2199 ahrens dsl_dir_close(pdd, FTAG); 677 789 ahrens return (EEXIST); 678 789 ahrens } 679 789 ahrens 680 2199 ahrens oa.userfunc = func; 681 2199 ahrens oa.userarg = arg; 682 2199 ahrens oa.lastname = tail; 683 2199 ahrens oa.type = type; 684 6492 timh oa.flags = flags; 685 4543 marks 686 10272 Matthew err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 687 10272 Matthew dmu_objset_create_sync, pdd, &oa, 5); 688 10272 Matthew dsl_dir_close(pdd, FTAG); 689 10272 Matthew return (err); 690 10272 Matthew } 691 10272 Matthew 692 10272 Matthew int 693 10272 Matthew dmu_objset_clone(const char *name, dsl_dataset_t *clone_origin, uint64_t flags) 694 10272 Matthew { 695 10272 Matthew dsl_dir_t *pdd; 696 10272 Matthew const char *tail; 697 10272 Matthew int err = 0; 698 10272 Matthew struct oscarg oa = { 0 }; 699 10272 Matthew 700 10272 Matthew ASSERT(strchr(name, '@') == NULL); 701 10272 Matthew err = dsl_dir_open(name, FTAG, &pdd, &tail); 702 10272 Matthew if (err) 703 10272 Matthew return (err); 704 10272 Matthew if (tail == NULL) { 705 10272 Matthew dsl_dir_close(pdd, FTAG); 706 10272 Matthew return (EEXIST); 707 789 ahrens } 708 10272 Matthew 709 10272 Matthew oa.lastname = tail; 710 10272 Matthew oa.clone_origin = clone_origin; 711 10272 Matthew oa.flags = flags; 712 10272 Matthew 713 2199 ahrens err = dsl_sync_task_do(pdd->dd_pool, dmu_objset_create_check, 714 2199 ahrens dmu_objset_create_sync, pdd, &oa, 5); 715 2199 ahrens dsl_dir_close(pdd, FTAG); 716 789 ahrens return (err); 717 789 ahrens } 718 789 ahrens 719 789 ahrens int 720 10242 chris dmu_objset_destroy(const char *name, boolean_t defer) 721 789 ahrens { 722 10298 Matthew dsl_dataset_t *ds; 723 789 ahrens int error; 724 789 ahrens 725 789 ahrens /* 726 10272 Matthew * dsl_dataset_destroy() can free any claimed-but-unplayed 727 10272 Matthew * intent log, but if there is an active log, it has blocks that 728 10272 Matthew * are allocated, but may not yet be reflected in the on-disk 729 10272 Matthew * structure. Only the ZIL knows how to free them, so we have 730 10272 Matthew * to call into it here. 731 789 ahrens */ 732 10298 Matthew error = dsl_dataset_own(name, B_TRUE, FTAG, &ds); 733 789 ahrens if (error == 0) { 734 10298 Matthew objset_t *os; 735 10298 Matthew if (dmu_objset_from_ds(ds, &os) == 0) 736 10298 Matthew zil_destroy(dmu_objset_zil(os), B_FALSE); 737 10298 Matthew error = dsl_dataset_destroy(ds, FTAG, defer); 738 10272 Matthew /* dsl_dataset_destroy() closes the ds. */ 739 789 ahrens } 740 789 ahrens 741 5367 ahrens return (error); 742 2199 ahrens } 743 2199 ahrens 744 2199 ahrens struct snaparg { 745 2199 ahrens dsl_sync_task_group_t *dstg; 746 2199 ahrens char *snapname; 747 2199 ahrens char failed[MAXPATHLEN]; 748 4543 marks boolean_t checkperms; 749 9355 Matthew nvlist_t *props; 750 5367 ahrens }; 751 5367 ahrens 752 9355 Matthew static int 753 9355 Matthew snapshot_check(void *arg1, void *arg2, dmu_tx_t *tx) 754 9355 Matthew { 755 9355 Matthew objset_t *os = arg1; 756 9355 Matthew struct snaparg *sn = arg2; 757 9355 Matthew 758 9355 Matthew /* The props have already been checked by zfs_check_userprops(). */ 759 9355 Matthew 760 10298 Matthew return (dsl_dataset_snapshot_check(os->os_dsl_dataset, 761 9355 Matthew sn->snapname, tx)); 762 9355 Matthew } 763 9355 Matthew 764 9355 Matthew static void 765 9355 Matthew snapshot_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) 766 9355 Matthew { 767 9355 Matthew objset_t *os = arg1; 768 10298 Matthew dsl_dataset_t *ds = os->os_dsl_dataset; 769 9355 Matthew struct snaparg *sn = arg2; 770 9355 Matthew 771 9355 Matthew dsl_dataset_snapshot_sync(ds, sn->snapname, cr, tx); 772 9355 Matthew 773 11022 Tom if (sn->props) { 774 11022 Tom dsl_props_arg_t pa; 775 11022 Tom pa.pa_props = sn->props; 776 11022 Tom pa.pa_source = ZPROP_SRC_LOCAL; 777 11022 Tom dsl_props_set_sync(ds->ds_prev, &pa, cr, tx); 778 11022 Tom } 779 9355 Matthew } 780 2199 ahrens 781 2199 ahrens static int 782 2199 ahrens dmu_objset_snapshot_one(char *name, void *arg) 783 2199 ahrens { 784 2199 ahrens struct snaparg *sn = arg; 785 2199 ahrens objset_t *os; 786 2199 ahrens int err; 787 2199 ahrens 788 2199 ahrens (void) strcpy(sn->failed, name); 789 4543 marks 790 4543 marks /* 791 4543 marks * Check permissions only when requested. This only applies when 792 4543 marks * doing a recursive snapshot. The permission checks for the starting 793 4543 marks * dataset have already been performed in zfs_secpolicy_snapshot() 794 4543 marks */ 795 4543 marks if (sn->checkperms == B_TRUE && 796 4543 marks (err = zfs_secpolicy_snapshot_perms(name, CRED()))) 797 4543 marks return (err); 798 2199 ahrens 799 10298 Matthew err = dmu_objset_hold(name, sn, &os); 800 2199 ahrens if (err != 0) 801 2199 ahrens return (err); 802 3637 rm160521 803 6689 maybee /* If the objset is in an inconsistent state, return busy */ 804 10298 Matthew if (os->os_dsl_dataset->ds_phys->ds_flags & DS_FLAG_INCONSISTENT) { 805 10298 Matthew dmu_objset_rele(os, sn); 806 3637 rm160521 return (EBUSY); 807 3637 rm160521 } 808 2199 ahrens 809 2199 ahrens /* 810 2199 ahrens * NB: we need to wait for all in-flight changes to get to disk, 811 2199 ahrens * so that we snapshot those changes. zil_suspend does this as 812 2199 ahrens * a side effect. 813 2199 ahrens */ 814 2199 ahrens err = zil_suspend(dmu_objset_zil(os)); 815 2199 ahrens if (err == 0) { 816 9355 Matthew dsl_sync_task_create(sn->dstg, snapshot_check, 817 9355 Matthew snapshot_sync, os, sn, 3); 818 3637 rm160521 } else { 819 10298 Matthew dmu_objset_rele(os, sn); 820 2199 ahrens } 821 3637 rm160521 822 2199 ahrens return (err); 823 2199 ahrens } 824 2199 ahrens 825 2199 ahrens int 826 9355 Matthew dmu_objset_snapshot(char *fsname, char *snapname, 827 9355 Matthew nvlist_t *props, boolean_t recursive) 828 2199 ahrens { 829 2199 ahrens dsl_sync_task_t *dst; 830 9355 Matthew struct snaparg sn; 831 2199 ahrens spa_t *spa; 832 2199 ahrens int err; 833 2199 ahrens 834 2199 ahrens (void) strcpy(sn.failed, fsname); 835 2199 ahrens 836 4603 ahrens err = spa_open(fsname, &spa, FTAG); 837 2199 ahrens if (err) 838 2199 ahrens return (err); 839 2199 ahrens 840 2199 ahrens sn.dstg = dsl_sync_task_group_create(spa_get_dsl(spa)); 841 2199 ahrens sn.snapname = snapname; 842 9355 Matthew sn.props = props; 843 2199 ahrens 844 2417 ahrens if (recursive) { 845 4543 marks sn.checkperms = B_TRUE; 846 2417 ahrens err = dmu_objset_find(fsname, 847 2417 ahrens dmu_objset_snapshot_one, &sn, DS_FIND_CHILDREN); 848 2417 ahrens } else { 849 4543 marks sn.checkperms = B_FALSE; 850 2199 ahrens err = dmu_objset_snapshot_one(fsname, &sn); 851 2417 ahrens } 852 2199 ahrens 853 9355 Matthew if (err == 0) 854 9355 Matthew err = dsl_sync_task_group_wait(sn.dstg); 855 2199 ahrens 856 2199 ahrens for (dst = list_head(&sn.dstg->dstg_tasks); dst; 857 2199 ahrens dst = list_next(&sn.dstg->dstg_tasks, dst)) { 858 9355 Matthew objset_t *os = dst->dst_arg1; 859 10298 Matthew dsl_dataset_t *ds = os->os_dsl_dataset; 860 2199 ahrens if (dst->dst_err) 861 5367 ahrens dsl_dataset_name(ds, sn.failed); 862 9355 Matthew zil_resume(dmu_objset_zil(os)); 863 10298 Matthew dmu_objset_rele(os, &sn); 864 2199 ahrens } 865 6174 ahrens 866 2199 ahrens if (err) 867 2199 ahrens (void) strcpy(fsname, sn.failed); 868 2199 ahrens dsl_sync_task_group_destroy(sn.dstg); 869 2199 ahrens spa_close(spa, FTAG); 870 789 ahrens return (err); 871 789 ahrens } 872 789 ahrens 873 789 ahrens static void 874 9396 Matthew dmu_objset_sync_dnodes(list_t *list, list_t *newlist, dmu_tx_t *tx) 875 789 ahrens { 876 3547 maybee dnode_t *dn; 877 789 ahrens 878 3547 maybee while (dn = list_head(list)) { 879 3547 maybee ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 880 3547 maybee ASSERT(dn->dn_dbuf->db_data_pending); 881 3547 maybee /* 882 9396 Matthew * Initialize dn_zio outside dnode_sync() because the 883 9396 Matthew * meta-dnode needs to set it ouside dnode_sync(). 884 3547 maybee */ 885 3547 maybee dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio; 886 3547 maybee ASSERT(dn->dn_zio); 887 789 ahrens 888 3547 maybee ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS); 889 3547 maybee list_remove(list, dn); 890 9396 Matthew 891 9396 Matthew if (newlist) { 892 9396 Matthew (void) dnode_add_ref(dn, newlist); 893 9396 Matthew list_insert_tail(newlist, dn); 894 9396 Matthew } 895 9396 Matthew 896 3547 maybee dnode_sync(dn, tx); 897 3547 maybee } 898 3547 maybee } 899 789 ahrens 900 3547 maybee /* ARGSUSED */ 901 3547 maybee static void 902 10922 Jeff dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg) 903 3547 maybee { 904 7754 Jeff blkptr_t *bp = zio->io_bp; 905 10298 Matthew objset_t *os = arg; 906 3547 maybee dnode_phys_t *dnp = &os->os_phys->os_meta_dnode; 907 789 ahrens 908 7754 Jeff ASSERT(bp == os->os_rootbp); 909 7754 Jeff ASSERT(BP_GET_TYPE(bp) == DMU_OT_OBJSET); 910 7754 Jeff ASSERT(BP_GET_LEVEL(bp) == 0); 911 5329 gw25295 912 3547 maybee /* 913 9396 Matthew * Update rootbp fill count: it should be the number of objects 914 9396 Matthew * allocated in the object set (not counting the "special" 915 9396 Matthew * objects that are stored in the objset_phys_t -- the meta 916 9396 Matthew * dnode and user/group accounting objects). 917 3547 maybee */ 918 9396 Matthew bp->blk_fill = 0; 919 7754 Jeff for (int i = 0; i < dnp->dn_nblkptr; i++) 920 3547 maybee bp->blk_fill += dnp->dn_blkptr[i].blk_fill; 921 10922 Jeff } 922 10922 Jeff 923 10922 Jeff /* ARGSUSED */ 924 10922 Jeff static void 925 10922 Jeff dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg) 926 10922 Jeff { 927 10922 Jeff blkptr_t *bp = zio->io_bp; 928 10922 Jeff blkptr_t *bp_orig = &zio->io_bp_orig; 929 10922 Jeff objset_t *os = arg; 930 5329 gw25295 931 7754 Jeff if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { 932 10922 Jeff ASSERT(BP_EQUAL(bp, bp_orig)); 933 7754 Jeff } else { 934 10922 Jeff dsl_dataset_t *ds = os->os_dsl_dataset; 935 10922 Jeff dmu_tx_t *tx = os->os_synctx; 936 10922 Jeff 937 10922 Jeff (void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE); 938 10922 Jeff dsl_dataset_block_born(ds, bp, tx); 939 5329 gw25295 } 940 789 ahrens } 941 789 ahrens 942 789 ahrens /* called from dsl */ 943 789 ahrens void 944 10298 Matthew dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) 945 789 ahrens { 946 789 ahrens int txgoff; 947 1544 eschrock zbookmark_t zb; 948 10922 Jeff zio_prop_t zp; 949 3547 maybee zio_t *zio; 950 3547 maybee list_t *list; 951 9396 Matthew list_t *newlist = NULL; 952 3547 maybee dbuf_dirty_record_t *dr; 953 3547 maybee 954 3547 maybee dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", tx->tx_txg); 955 789 ahrens 956 789 ahrens ASSERT(dmu_tx_is_syncing(tx)); 957 789 ahrens /* XXX the write_done callback should really give us the tx... */ 958 789 ahrens os->os_synctx = tx; 959 789 ahrens 960 3882 ahrens if (os->os_dsl_dataset == NULL) { 961 3882 ahrens /* 962 3882 ahrens * This is the MOS. If we have upgraded, 963 3882 ahrens * spa_max_replication() could change, so reset 964 3882 ahrens * os_copies here. 965 3882 ahrens */ 966 3882 ahrens os->os_copies = spa_max_replication(os->os_spa); 967 3882 ahrens } 968 3882 ahrens 969 3547 maybee /* 970 3547 maybee * Create the root block IO 971 3547 maybee */ 972 7046 ahrens arc_release(os->os_phys_buf, &os->os_phys_buf); 973 9396 Matthew 974 10922 Jeff SET_BOOKMARK(&zb, os->os_dsl_dataset ? 975 10922 Jeff os->os_dsl_dataset->ds_object : DMU_META_OBJSET, 976 10922 Jeff ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 977 10922 Jeff 978 10922 Jeff dmu_write_policy(os, NULL, 0, 0, &zp); 979 10922 Jeff 980 10922 Jeff zio = arc_write(pio, os->os_spa, tx->tx_txg, 981 10922 Jeff os->os_rootbp, os->os_phys_buf, DMU_OS_IS_L2CACHEABLE(os), &zp, 982 10922 Jeff dmu_objset_write_ready, dmu_objset_write_done, os, 983 7754 Jeff ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb); 984 3547 maybee 985 3547 maybee /* 986 9396 Matthew * Sync special dnodes - the parent IO for the sync is the root block 987 3547 maybee */ 988 3547 maybee os->os_meta_dnode->dn_zio = zio; 989 3547 maybee dnode_sync(os->os_meta_dnode, tx); 990 789 ahrens 991 9396 Matthew os->os_phys->os_flags = os->os_flags; 992 9396 Matthew 993 9396 Matthew if (os->os_userused_dnode && 994 9396 Matthew os->os_userused_dnode->dn_type != DMU_OT_NONE) { 995 9396 Matthew os->os_userused_dnode->dn_zio = zio; 996 9396 Matthew dnode_sync(os->os_userused_dnode, tx); 997 9396 Matthew os->os_groupused_dnode->dn_zio = zio; 998 9396 Matthew dnode_sync(os->os_groupused_dnode, tx); 999 9396 Matthew } 1000 9396 Matthew 1001 789 ahrens txgoff = tx->tx_txg & TXG_MASK; 1002 789 ahrens 1003 9396 Matthew if (dmu_objset_userused_enabled(os)) { 1004 9396 Matthew newlist = &os->os_synced_dnodes; 1005 9396 Matthew /* 1006 9396 Matthew * We must create the list here because it uses the 1007 9396 Matthew * dn_dirty_link[] of this txg. 1008 9396 Matthew */ 1009 9396 Matthew list_create(newlist, sizeof (dnode_t), 1010 9396 Matthew offsetof(dnode_t, dn_dirty_link[txgoff])); 1011 9396 Matthew } 1012 9396 Matthew 1013 9396 Matthew dmu_objset_sync_dnodes(&os->os_free_dnodes[txgoff], newlist, tx); 1014 9396 Matthew dmu_objset_sync_dnodes(&os->os_dirty_dnodes[txgoff], newlist, tx); 1015 789 ahrens 1016 3547 maybee list = &os->os_meta_dnode->dn_dirty_records[txgoff]; 1017 3547 maybee while (dr = list_head(list)) { 1018 3547 maybee ASSERT(dr->dr_dbuf->db_level == 0); 1019 3547 maybee list_remove(list, dr); 1020 3547 maybee if (dr->dr_zio) 1021 3547 maybee zio_nowait(dr->dr_zio); 1022 3547 maybee } 1023 789 ahrens /* 1024 789 ahrens * Free intent log blocks up to this tx. 1025 789 ahrens */ 1026 789 ahrens zil_sync(os->os_zil, tx); 1027 7046 ahrens os->os_phys->os_zil_header = os->os_zil_header; 1028 3547 maybee zio_nowait(zio); 1029 10922 Jeff } 1030 10922 Jeff 1031 10922 Jeff boolean_t 1032 10922 Jeff dmu_objset_is_dirty(objset_t *os, uint64_t txg) 1033 10922 Jeff { 1034 10922 Jeff return (!list_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]) || 1035 10922 Jeff !list_is_empty(&os->os_free_dnodes[txg & TXG_MASK])); 1036 9396 Matthew } 1037 9396 Matthew 1038 9396 Matthew static objset_used_cb_t *used_cbs[DMU_OST_NUMTYPES]; 1039 9396 Matthew 1040 9396 Matthew void 1041 9396 Matthew dmu_objset_register_type(dmu_objset_type_t ost, objset_used_cb_t *cb) 1042 9396 Matthew { 1043 9396 Matthew used_cbs[ost] = cb; 1044 9396 Matthew } 1045 9396 Matthew 1046 9396 Matthew boolean_t 1047 10298 Matthew dmu_objset_userused_enabled(objset_t *os) 1048 9396 Matthew { 1049 9396 Matthew return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE && 1050 9396 Matthew used_cbs[os->os_phys->os_type] && 1051 9396 Matthew os->os_userused_dnode); 1052 9396 Matthew } 1053 9396 Matthew 1054 10407 Matthew static void 1055 10407 Matthew do_userquota_callback(objset_t *os, dnode_phys_t *dnp, 1056 10407 Matthew boolean_t subtract, dmu_tx_t *tx) 1057 10407 Matthew { 1058 10407 Matthew static const char zerobuf[DN_MAX_BONUSLEN] = {0}; 1059 10407 Matthew uint64_t user, group; 1060 10407 Matthew 1061 10407 Matthew ASSERT(dnp->dn_type != 0 || 1062 10407 Matthew (bcmp(DN_BONUS(dnp), zerobuf, DN_MAX_BONUSLEN) == 0 && 1063 10407 Matthew DN_USED_BYTES(dnp) == 0)); 1064 10407 Matthew 1065 10407 Matthew if ((dnp->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) && 1066 10407 Matthew 0 == used_cbs[os->os_phys->os_type](dnp->dn_bonustype, 1067 10407 Matthew DN_BONUS(dnp), &user, &group)) { 1068 10407 Matthew int64_t delta = DNODE_SIZE + DN_USED_BYTES(dnp); 1069 10407 Matthew if (subtract) 1070 10407 Matthew delta = -delta; 1071 10801 Matthew VERIFY3U(0, ==, zap_increment_int(os, DMU_USERUSED_OBJECT, 1072 10407 Matthew user, delta, tx)); 1073 10801 Matthew VERIFY3U(0, ==, zap_increment_int(os, DMU_GROUPUSED_OBJECT, 1074 10407 Matthew group, delta, tx)); 1075 10407 Matthew } 1076 10407 Matthew } 1077 10407 Matthew 1078 9396 Matthew void 1079 10298 Matthew dmu_objset_do_userquota_callbacks(objset_t *os, dmu_tx_t *tx) 1080 9396 Matthew { 1081 9396 Matthew dnode_t *dn; 1082 9396 Matthew list_t *list = &os->os_synced_dnodes; 1083 9396 Matthew 1084 9396 Matthew ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os)); 1085 9396 Matthew 1086 9396 Matthew while (dn = list_head(list)) { 1087 9396 Matthew ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object)); 1088 9396 Matthew ASSERT(dn->dn_oldphys); 1089 9396 Matthew ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE || 1090 9396 Matthew dn->dn_phys->dn_flags & 1091 9396 Matthew DNODE_FLAG_USERUSED_ACCOUNTED); 1092 9396 Matthew 1093 9396 Matthew /* Allocate the user/groupused objects if necessary. */ 1094 9396 Matthew if (os->os_userused_dnode->dn_type == DMU_OT_NONE) { 1095 10298 Matthew VERIFY(0 == zap_create_claim(os, 1096 9396 Matthew DMU_USERUSED_OBJECT, 1097 9396 Matthew DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1098 10298 Matthew VERIFY(0 == zap_create_claim(os, 1099 9396 Matthew DMU_GROUPUSED_OBJECT, 1100 9396 Matthew DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx)); 1101 9396 Matthew } 1102 9396 Matthew 1103 9396 Matthew /* 1104 10407 Matthew * We intentionally modify the zap object even if the 1105 10407 Matthew * net delta (due to phys-oldphys) is zero. Otherwise 1106 10407 Matthew * the block of the zap obj could be shared between 1107 10407 Matthew * datasets but need to be different between them after 1108 10407 Matthew * a bprewrite. 1109 9396 Matthew */ 1110 10407 Matthew do_userquota_callback(os, dn->dn_oldphys, B_TRUE, tx); 1111 10407 Matthew do_userquota_callback(os, dn->dn_phys, B_FALSE, tx); 1112 9396 Matthew 1113 9396 Matthew /* 1114 9396 Matthew * The mutex is needed here for interlock with dnode_allocate. 1115 9396 Matthew */ 1116 9396 Matthew mutex_enter(&dn->dn_mtx); 1117 9396 Matthew zio_buf_free(dn->dn_oldphys, sizeof (dnode_phys_t)); 1118 9396 Matthew dn->dn_oldphys = NULL; 1119 9396 Matthew mutex_exit(&dn->dn_mtx); 1120 9396 Matthew 1121 9396 Matthew list_remove(list, dn); 1122 9396 Matthew dnode_rele(dn, list); 1123 9396 Matthew } 1124 9396 Matthew } 1125 9396 Matthew 1126 9396 Matthew boolean_t 1127 9396 Matthew dmu_objset_userspace_present(objset_t *os) 1128 9396 Matthew { 1129 10298 Matthew return (os->os_phys->os_flags & 1130 9396 Matthew OBJSET_FLAG_USERACCOUNTING_COMPLETE); 1131 9396 Matthew } 1132 9396 Matthew 1133 9396 Matthew int 1134 9396 Matthew dmu_objset_userspace_upgrade(objset_t *os) 1135 9396 Matthew { 1136 9396 Matthew uint64_t obj; 1137 9396 Matthew int err = 0; 1138 9396 Matthew 1139 9396 Matthew if (dmu_objset_userspace_present(os)) 1140 9396 Matthew return (0); 1141 10298 Matthew if (!dmu_objset_userused_enabled(os)) 1142 9396 Matthew return (ENOTSUP); 1143 9396 Matthew if (dmu_objset_is_snapshot(os)) 1144 9396 Matthew return (EINVAL); 1145 9396 Matthew 1146 9396 Matthew /* 1147 9396 Matthew * We simply need to mark every object dirty, so that it will be 1148 9396 Matthew * synced out and now accounted. If this is called 1149 9396 Matthew * concurrently, or if we already did some work before crashing, 1150 9396 Matthew * that's fine, since we track each object's accounted state 1151 9396 Matthew * independently. 1152 9396 Matthew */ 1153 9396 Matthew 1154 9396 Matthew for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) { 1155 9951 Lin dmu_tx_t *tx; 1156 9396 Matthew dmu_buf_t *db; 1157 9396 Matthew int objerr; 1158 9396 Matthew 1159 9396 Matthew if (issig(JUSTLOOKING) && issig(FORREAL)) 1160 9396 Matthew return (EINTR); 1161 9396 Matthew 1162 9396 Matthew objerr = dmu_bonus_hold(os, obj, FTAG, &db); 1163 9396 Matthew if (objerr) 1164 9396 Matthew continue; 1165 9951 Lin tx = dmu_tx_create(os); 1166 9396 Matthew dmu_tx_hold_bonus(tx, obj); 1167 9396 Matthew objerr = dmu_tx_assign(tx, TXG_WAIT); 1168 9396 Matthew if (objerr) { 1169 9396 Matthew dmu_tx_abort(tx); 1170 9396 Matthew continue; 1171 9396 Matthew } 1172 9396 Matthew dmu_buf_will_dirty(db, tx); 1173 9396 Matthew dmu_buf_rele(db, FTAG); 1174 9396 Matthew dmu_tx_commit(tx); 1175 9396 Matthew } 1176 9396 Matthew 1177 10298 Matthew os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE; 1178 9396 Matthew txg_wait_synced(dmu_objset_pool(os), 0); 1179 9396 Matthew return (0); 1180 789 ahrens } 1181 789 ahrens 1182 789 ahrens void 1183 2885 ahrens dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, 1184 2885 ahrens uint64_t *usedobjsp, uint64_t *availobjsp) 1185 789 ahrens { 1186 10298 Matthew dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp, 1187 2885 ahrens usedobjsp, availobjsp); 1188 2885 ahrens } 1189 2885 ahrens 1190 2885 ahrens uint64_t 1191 2885 ahrens dmu_objset_fsid_guid(objset_t *os) 1192 2885 ahrens { 1193 10298 Matthew return (dsl_dataset_fsid_guid(os->os_dsl_dataset)); 1194 2885 ahrens } 1195 2885 ahrens 1196 2885 ahrens void 1197 2885 ahrens dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat) 1198 2885 ahrens { 1199 10298 Matthew stat->dds_type = os->os_phys->os_type; 1200 10298 Matthew if (os->os_dsl_dataset) 1201 10298 Matthew dsl_dataset_fast_stat(os->os_dsl_dataset, stat); 1202 2885 ahrens } 1203 2885 ahrens 1204 2885 ahrens void 1205 2885 ahrens dmu_objset_stats(objset_t *os, nvlist_t *nv) 1206 2885 ahrens { 1207 10298 Matthew ASSERT(os->os_dsl_dataset || 1208 10298 Matthew os->os_phys->os_type == DMU_OST_META); 1209 2885 ahrens 1210 10298 Matthew if (os->os_dsl_dataset != NULL) 1211 10298 Matthew dsl_dataset_stats(os->os_dsl_dataset, nv); 1212 2885 ahrens 1213 2885 ahrens dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE, 1214 10298 Matthew os->os_phys->os_type); 1215 9396 Matthew dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING, 1216 9396 Matthew dmu_objset_userspace_present(os)); 1217 789 ahrens } 1218 789 ahrens 1219 789 ahrens int 1220 789 ahrens dmu_objset_is_snapshot(objset_t *os) 1221 789 ahrens { 1222 10298 Matthew if (os->os_dsl_dataset != NULL) 1223 10298 Matthew return (dsl_dataset_is_snapshot(os->os_dsl_dataset)); 1224 789 ahrens else 1225 789 ahrens return (B_FALSE); 1226 789 ahrens } 1227 789 ahrens 1228 789 ahrens int 1229 6492 timh dmu_snapshot_realname(objset_t *os, char *name, char *real, int maxlen, 1230 6492 timh boolean_t *conflict) 1231 6492 timh { 1232 10298 Matthew dsl_dataset_t *ds = os->os_dsl_dataset; 1233 6492 timh uint64_t ignored; 1234 6492 timh 1235 6492 timh if (ds->ds_phys->ds_snapnames_zapobj == 0) 1236 6492 timh return (ENOENT); 1237 6492 timh 1238 6492 timh return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset, 1239 6492 timh ds->ds_phys->ds_snapnames_zapobj, name, 8, 1, &ignored, MT_FIRST, 1240 6492 timh real, maxlen, conflict)); 1241 6492 timh } 1242 6492 timh 1243 6492 timh int 1244 789 ahrens dmu_snapshot_list_next(objset_t *os, int namelen, char *name, 1245 5663 ck153898 uint64_t *idp, uint64_t *offp, boolean_t *case_conflict) 1246 789 ahrens { 1247 10298 Matthew dsl_dataset_t *ds = os->os_dsl_dataset; 1248 789 ahrens zap_cursor_t cursor; 1249 789 ahrens zap_attribute_t attr; 1250 789 ahrens 1251 789 ahrens if (ds->ds_phys->ds_snapnames_zapobj == 0) 1252 789 ahrens return (ENOENT); 1253 789 ahrens 1254 789 ahrens zap_cursor_init_serialized(&cursor, 1255 789 ahrens ds->ds_dir->dd_pool->dp_meta_objset, 1256 789 ahrens ds->ds_phys->ds_snapnames_zapobj, *offp); 1257 789 ahrens 1258 885 ahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 1259 885 ahrens zap_cursor_fini(&cursor); 1260 885 ahrens return (ENOENT); 1261 885 ahrens } 1262 885 ahrens 1263 885 ahrens if (strlen(attr.za_name) + 1 > namelen) { 1264 885 ahrens zap_cursor_fini(&cursor); 1265 885 ahrens return (ENAMETOOLONG); 1266 885 ahrens } 1267 885 ahrens 1268 885 ahrens (void) strcpy(name, attr.za_name); 1269 885 ahrens if (idp) 1270 885 ahrens *idp = attr.za_first_integer; 1271 5663 ck153898 if (case_conflict) 1272 5663 ck153898 *case_conflict = attr.za_normalization_conflict; 1273 885 ahrens zap_cursor_advance(&cursor); 1274 885 ahrens *offp = zap_cursor_serialize(&cursor); 1275 885 ahrens zap_cursor_fini(&cursor); 1276 885 ahrens 1277 885 ahrens return (0); 1278 885 ahrens } 1279 885 ahrens 1280 885 ahrens int 1281 885 ahrens dmu_dir_list_next(objset_t *os, int namelen, char *name, 1282 885 ahrens uint64_t *idp, uint64_t *offp) 1283 885 ahrens { 1284 10298 Matthew dsl_dir_t *dd = os->os_dsl_dataset->ds_dir; 1285 885 ahrens zap_cursor_t cursor; 1286 885 ahrens zap_attribute_t attr; 1287 885 ahrens 1288 885 ahrens /* there is no next dir on a snapshot! */ 1289 10298 Matthew if (os->os_dsl_dataset->ds_object != 1290 885 ahrens dd->dd_phys->dd_head_dataset_obj) 1291 885 ahrens return (ENOENT); 1292 885 ahrens 1293 885 ahrens zap_cursor_init_serialized(&cursor, 1294 885 ahrens dd->dd_pool->dp_meta_objset, 1295 885 ahrens dd->dd_phys->dd_child_dir_zapobj, *offp); 1296 885 ahrens 1297 885 ahrens if (zap_cursor_retrieve(&cursor, &attr) != 0) { 1298 885 ahrens zap_cursor_fini(&cursor); 1299 885 ahrens return (ENOENT); 1300 885 ahrens } 1301 885 ahrens 1302 885 ahrens if (strlen(attr.za_name) + 1 > namelen) { 1303 885 ahrens zap_cursor_fini(&cursor); 1304 789 ahrens return (ENAMETOOLONG); 1305 885 ahrens } 1306 789 ahrens 1307 789 ahrens (void) strcpy(name, attr.za_name); 1308 885 ahrens if (idp) 1309 885 ahrens *idp = attr.za_first_integer; 1310 789 ahrens zap_cursor_advance(&cursor); 1311 789 ahrens *offp = zap_cursor_serialize(&cursor); 1312 885 ahrens zap_cursor_fini(&cursor); 1313 789 ahrens 1314 789 ahrens return (0); 1315 789 ahrens } 1316 789 ahrens 1317 7046 ahrens struct findarg { 1318 7046 ahrens int (*func)(char *, void *); 1319 7046 ahrens void *arg; 1320 7046 ahrens }; 1321 7046 ahrens 1322 7046 ahrens /* ARGSUSED */ 1323 7046 ahrens static int 1324 7046 ahrens findfunc(spa_t *spa, uint64_t dsobj, const char *dsname, void *arg) 1325 7046 ahrens { 1326 7046 ahrens struct findarg *fa = arg; 1327 7046 ahrens return (fa->func((char *)dsname, fa->arg)); 1328 7046 ahrens } 1329 7046 ahrens 1330 789 ahrens /* 1331 789 ahrens * Find all objsets under name, and for each, call 'func(child_name, arg)'. 1332 7046 ahrens * Perhaps change all callers to use dmu_objset_find_spa()? 1333 789 ahrens */ 1334 2199 ahrens int 1335 2199 ahrens dmu_objset_find(char *name, int func(char *, void *), void *arg, int flags) 1336 789 ahrens { 1337 7046 ahrens struct findarg fa; 1338 7046 ahrens fa.func = func; 1339 7046 ahrens fa.arg = arg; 1340 7046 ahrens return (dmu_objset_find_spa(NULL, name, findfunc, &fa, flags)); 1341 7046 ahrens } 1342 7046 ahrens 1343 7046 ahrens /* 1344 7046 ahrens * Find all objsets under name, call func on each 1345 7046 ahrens */ 1346 7046 ahrens int 1347 7046 ahrens dmu_objset_find_spa(spa_t *spa, const char *name, 1348 7046 ahrens int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags) 1349 7046 ahrens { 1350 789 ahrens dsl_dir_t *dd; 1351 7046 ahrens dsl_pool_t *dp; 1352 7046 ahrens dsl_dataset_t *ds; 1353 789 ahrens zap_cursor_t zc; 1354 3978 mmusante zap_attribute_t *attr; 1355 789 ahrens char *child; 1356 7046 ahrens uint64_t thisobj; 1357 7046 ahrens int err; 1358 789 ahrens 1359 7046 ahrens if (name == NULL) 1360 7046 ahrens name = spa_name(spa); 1361 7046 ahrens err = dsl_dir_open_spa(spa, name, FTAG, &dd, NULL); 1362 1544 eschrock if (err) 1363 2199 ahrens return (err); 1364 789 ahrens 1365 7046 ahrens /* Don't visit hidden ($MOS & $ORIGIN) objsets. */ 1366 7046 ahrens if (dd->dd_myname[0] == '$') { 1367 7046 ahrens dsl_dir_close(dd, FTAG); 1368 7046 ahrens return (0); 1369 7046 ahrens } 1370 7046 ahrens 1371 7046 ahrens thisobj = dd->dd_phys->dd_head_dataset_obj; 1372 3978 mmusante attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP); 1373 7046 ahrens dp = dd->dd_pool; 1374 789 ahrens 1375 789 ahrens /* 1376 789 ahrens * Iterate over all children. 1377 789 ahrens */ 1378 2417 ahrens if (flags & DS_FIND_CHILDREN) { 1379 7046 ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, 1380 2417 ahrens dd->dd_phys->dd_child_dir_zapobj); 1381 3978 mmusante zap_cursor_retrieve(&zc, attr) == 0; 1382 2417 ahrens (void) zap_cursor_advance(&zc)) { 1383 3978 mmusante ASSERT(attr->za_integer_length == sizeof (uint64_t)); 1384 3978 mmusante ASSERT(attr->za_num_integers == 1); 1385 789 ahrens 1386 11165 Matthew child = kmem_asprintf("%s/%s", name, attr->za_name); 1387 7046 ahrens err = dmu_objset_find_spa(spa, child, func, arg, flags); 1388 11165 Matthew strfree(child); 1389 2417 ahrens if (err) 1390 2417 ahrens break; 1391 2417 ahrens } 1392 2417 ahrens zap_cursor_fini(&zc); 1393 2199 ahrens 1394 2417 ahrens if (err) { 1395 2417 ahrens dsl_dir_close(dd, FTAG); 1396 3978 mmusante kmem_free(attr, sizeof (zap_attribute_t)); 1397 2417 ahrens return (err); 1398 2417 ahrens } 1399 789 ahrens } 1400 789 ahrens 1401 789 ahrens /* 1402 789 ahrens * Iterate over all snapshots. 1403 789 ahrens */ 1404 7046 ahrens if (flags & DS_FIND_SNAPSHOTS) { 1405 7046 ahrens if (!dsl_pool_sync_context(dp)) 1406 7046 ahrens rw_enter(&dp->dp_config_rwlock, RW_READER); 1407 7046 ahrens err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds); 1408 7046 ahrens if (!dsl_pool_sync_context(dp)) 1409 7046 ahrens rw_exit(&dp->dp_config_rwlock); 1410 789 ahrens 1411 7046 ahrens if (err == 0) { 1412 7046 ahrens uint64_t snapobj = ds->ds_phys->ds_snapnames_zapobj; 1413 7046 ahrens dsl_dataset_rele(ds, FTAG); 1414 789 ahrens 1415 7046 ahrens for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj); 1416 7046 ahrens zap_cursor_retrieve(&zc, attr) == 0; 1417 7046 ahrens (void) zap_cursor_advance(&zc)) { 1418 7046 ahrens ASSERT(attr->za_integer_length == 1419 7046 ahrens sizeof (uint64_t)); 1420 7046 ahrens ASSERT(attr->za_num_integers == 1); 1421 789 ahrens 1422 11165 Matthew child = kmem_asprintf("%s@%s", 1423 11165 Matthew name, attr->za_name); 1424 7046 ahrens err = func(spa, attr->za_first_integer, 1425 7046 ahrens child, arg); 1426 11165 Matthew strfree(child); 1427 7046 ahrens if (err) 1428 7046 ahrens break; 1429 7046 ahrens } 1430 7046 ahrens zap_cursor_fini(&zc); 1431 789 ahrens } 1432 789 ahrens } 1433 789 ahrens 1434 789 ahrens dsl_dir_close(dd, FTAG); 1435 3978 mmusante kmem_free(attr, sizeof (zap_attribute_t)); 1436 789 ahrens 1437 2199 ahrens if (err) 1438 2199 ahrens return (err); 1439 2199 ahrens 1440 789 ahrens /* 1441 789 ahrens * Apply to self if appropriate. 1442 789 ahrens */ 1443 7046 ahrens err = func(spa, thisobj, name, arg); 1444 2199 ahrens return (err); 1445 789 ahrens } 1446 5326 ek110237 1447 8415 Richard /* ARGSUSED */ 1448 8415 Richard int 1449 8415 Richard dmu_objset_prefetch(char *name, void *arg) 1450 8415 Richard { 1451 8415 Richard dsl_dataset_t *ds; 1452 8415 Richard 1453 8415 Richard if (dsl_dataset_hold(name, FTAG, &ds)) 1454 8415 Richard return (0); 1455 8415 Richard 1456 8415 Richard if (!BP_IS_HOLE(&ds->ds_phys->ds_bp)) { 1457 8415 Richard mutex_enter(&ds->ds_opening_lock); 1458 10298 Matthew if (ds->ds_objset == NULL) { 1459 8415 Richard uint32_t aflags = ARC_NOWAIT | ARC_PREFETCH; 1460 8415 Richard zbookmark_t zb; 1461 8415 Richard 1462 10922 Jeff SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT, 1463 10922 Jeff ZB_ROOT_LEVEL, ZB_ROOT_BLKID); 1464 8415 Richard 1465 8415 Richard (void) arc_read_nolock(NULL, dsl_dataset_get_spa(ds), 1466 8415 Richard &ds->ds_phys->ds_bp, NULL, NULL, 1467 8415 Richard ZIO_PRIORITY_ASYNC_READ, 1468 8415 Richard ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE, 1469 8415 Richard &aflags, &zb); 1470 8415 Richard } 1471 8415 Richard mutex_exit(&ds->ds_opening_lock); 1472 8415 Richard } 1473 8415 Richard 1474 8415 Richard dsl_dataset_rele(ds, FTAG); 1475 8415 Richard return (0); 1476 8415 Richard } 1477 8415 Richard 1478 5326 ek110237 void 1479 5326 ek110237 dmu_objset_set_user(objset_t *os, void *user_ptr) 1480 5326 ek110237 { 1481 10298 Matthew ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1482 10298 Matthew os->os_user_ptr = user_ptr; 1483 5326 ek110237 } 1484 5326 ek110237 1485 5326 ek110237 void * 1486 5326 ek110237 dmu_objset_get_user(objset_t *os) 1487 5326 ek110237 { 1488 10298 Matthew ASSERT(MUTEX_HELD(&os->os_user_ptr_lock)); 1489 10298 Matthew return (os->os_user_ptr); 1490 5326 ek110237 } 1491
Indexes created Thu Nov 26 09:50:34 UTC 2009
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