1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2011, 2018 by Delphix. All rights reserved. 24 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. 25 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 26 * Copyright (c) 2014, Nexenta Systems, Inc. All rights reserved. 27 * Copyright (c) 2017, Intel Corporation. 28 * Copyright (c) 2019, Klara Inc. 29 * Copyright (c) 2019, Allan Jude 30 */ 31 32 #ifndef _KERNEL 33 #include <errno.h> 34 #include <string.h> 35 #include <sys/stat.h> 36 #endif 37 #include <sys/debug.h> 38 #include <sys/fs/zfs.h> 39 #include <sys/inttypes.h> 40 #include <sys/types.h> 41 #include <sys/param.h> 42 #include <sys/zfs_sysfs.h> 43 #include "zfeature_common.h" 44 45 /* 46 * Set to disable all feature checks while opening pools, allowing pools with 47 * unsupported features to be opened. Set for testing only. 48 */ 49 boolean_t zfeature_checks_disable = B_FALSE; 50 51 zfeature_info_t spa_feature_table[SPA_FEATURES]; 52 53 /* 54 * Valid characters for feature guids. This list is mainly for aesthetic 55 * purposes and could be expanded in the future. There are different allowed 56 * characters in the guids reverse dns portion (before the colon) and its 57 * short name (after the colon). 58 */ 59 static int 60 valid_char(char c, boolean_t after_colon) 61 { 62 return ((c >= 'a' && c <= 'z') || 63 (c >= '0' && c <= '9') || 64 (after_colon && c == '_') || 65 (!after_colon && (c == '.' || c == '-'))); 66 } 67 68 /* 69 * Every feature guid must contain exactly one colon which separates a reverse 70 * dns organization name from the feature's "short" name (e.g. 71 * "com.company:feature_name"). 72 */ 73 boolean_t 74 zfeature_is_valid_guid(const char *name) 75 { 76 int i; 77 boolean_t has_colon = B_FALSE; 78 79 i = 0; 80 while (name[i] != '\0') { 81 char c = name[i++]; 82 if (c == ':') { 83 if (has_colon) 84 return (B_FALSE); 85 has_colon = B_TRUE; 86 continue; 87 } 88 if (!valid_char(c, has_colon)) 89 return (B_FALSE); 90 } 91 92 return (has_colon); 93 } 94 95 boolean_t 96 zfeature_is_supported(const char *guid) 97 { 98 if (zfeature_checks_disable) 99 return (B_TRUE); 100 101 for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { 102 zfeature_info_t *feature = &spa_feature_table[i]; 103 if (!feature->fi_zfs_mod_supported) 104 continue; 105 if (strcmp(guid, feature->fi_guid) == 0) 106 return (B_TRUE); 107 } 108 return (B_FALSE); 109 } 110 111 int 112 zfeature_lookup_guid(const char *guid, spa_feature_t *res) 113 { 114 for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { 115 zfeature_info_t *feature = &spa_feature_table[i]; 116 if (!feature->fi_zfs_mod_supported) 117 continue; 118 if (strcmp(guid, feature->fi_guid) == 0) { 119 if (res != NULL) 120 *res = i; 121 return (0); 122 } 123 } 124 125 return (ENOENT); 126 } 127 128 int 129 zfeature_lookup_name(const char *name, spa_feature_t *res) 130 { 131 for (spa_feature_t i = 0; i < SPA_FEATURES; i++) { 132 zfeature_info_t *feature = &spa_feature_table[i]; 133 if (!feature->fi_zfs_mod_supported) 134 continue; 135 if (strcmp(name, feature->fi_uname) == 0) { 136 if (res != NULL) 137 *res = i; 138 return (0); 139 } 140 } 141 142 return (ENOENT); 143 } 144 145 boolean_t 146 zfeature_depends_on(spa_feature_t fid, spa_feature_t check) 147 { 148 zfeature_info_t *feature = &spa_feature_table[fid]; 149 150 for (int i = 0; feature->fi_depends[i] != SPA_FEATURE_NONE; i++) { 151 if (feature->fi_depends[i] == check) 152 return (B_TRUE); 153 } 154 return (B_FALSE); 155 } 156 157 static boolean_t 158 deps_contains_feature(const spa_feature_t *deps, const spa_feature_t feature) 159 { 160 for (int i = 0; deps[i] != SPA_FEATURE_NONE; i++) 161 if (deps[i] == feature) 162 return (B_TRUE); 163 164 return (B_FALSE); 165 } 166 167 #if !defined(_KERNEL) && !defined(LIB_ZPOOL_BUILD) 168 static boolean_t 169 zfs_mod_supported_impl(const char *scope, const char *name, const char *sysfs) 170 { 171 boolean_t supported = B_FALSE; 172 char *path; 173 174 int len = asprintf(&path, "%s%s%s%s%s", sysfs, 175 scope == NULL ? "" : "/", scope == NULL ? "" : scope, 176 name == NULL ? "" : "/", name == NULL ? "" : name); 177 if (len > 0) { 178 struct stat64 statbuf; 179 supported = !!(stat64(path, &statbuf) == 0); 180 free(path); 181 } 182 183 return (supported); 184 } 185 186 boolean_t 187 zfs_mod_supported(const char *scope, const char *name) 188 { 189 boolean_t supported; 190 191 /* 192 * Check both the primary and alternate sysfs locations to determine 193 * if the required functionality is supported. 194 */ 195 supported = (zfs_mod_supported_impl(scope, name, ZFS_SYSFS_DIR) || 196 zfs_mod_supported_impl(scope, name, ZFS_SYSFS_ALT_DIR)); 197 198 /* 199 * For backwards compatibility with kernel modules that predate 200 * supported feature/property checking. Report the feature/property 201 * as supported if the kernel module is loaded but the requested 202 * scope directory does not exist. 203 */ 204 if (supported == B_FALSE) { 205 struct stat64 statbuf; 206 if ((stat64(ZFS_SYSFS_DIR, &statbuf) == 0) && 207 !zfs_mod_supported_impl(scope, NULL, ZFS_SYSFS_DIR) && 208 !zfs_mod_supported_impl(scope, NULL, ZFS_SYSFS_ALT_DIR)) { 209 supported = B_TRUE; 210 } 211 } 212 213 return (supported); 214 } 215 #endif 216 217 static boolean_t 218 zfs_mod_supported_feature(const char *name) 219 { 220 /* 221 * The zfs module spa_feature_table[], whether in-kernel or in 222 * libzpool, always supports all the features. libzfs needs to 223 * query the running module, via sysfs, to determine which 224 * features are supported. 225 * 226 * The equivalent _can_ be done on FreeBSD by way of the sysctl 227 * tree, but this has not been done yet. Therefore, we return 228 * that all features except edonr are supported. 229 */ 230 231 #if defined(_KERNEL) || defined(LIB_ZPOOL_BUILD) || defined(__FreeBSD__) 232 return (B_TRUE); 233 #else 234 return (zfs_mod_supported(ZFS_SYSFS_POOL_FEATURES, name)); 235 #endif 236 } 237 238 static void 239 zfeature_register(spa_feature_t fid, const char *guid, const char *name, 240 const char *desc, zfeature_flags_t flags, zfeature_type_t type, 241 const spa_feature_t *deps) 242 { 243 zfeature_info_t *feature = &spa_feature_table[fid]; 244 static spa_feature_t nodeps[] = { SPA_FEATURE_NONE }; 245 246 ASSERT(name != NULL); 247 ASSERT(desc != NULL); 248 ASSERT((flags & ZFEATURE_FLAG_READONLY_COMPAT) == 0 || 249 (flags & ZFEATURE_FLAG_MOS) == 0); 250 ASSERT3U(fid, <, SPA_FEATURES); 251 ASSERT(zfeature_is_valid_guid(guid)); 252 253 if (deps == NULL) 254 deps = nodeps; 255 256 VERIFY(((flags & ZFEATURE_FLAG_PER_DATASET) == 0) || 257 (deps_contains_feature(deps, SPA_FEATURE_EXTENSIBLE_DATASET))); 258 259 feature->fi_feature = fid; 260 feature->fi_guid = guid; 261 feature->fi_uname = name; 262 feature->fi_desc = desc; 263 feature->fi_flags = flags; 264 feature->fi_type = type; 265 feature->fi_depends = deps; 266 feature->fi_zfs_mod_supported = zfs_mod_supported_feature(guid); 267 } 268 269 /* 270 * Every feature has a GUID of the form com.example:feature_name. The 271 * reversed DNS name ensures that the feature's GUID is unique across all ZFS 272 * implementations. This allows companies to independently develop and 273 * release features. Examples include org.delphix and org.datto. Previously, 274 * features developed on one implementation have used that implementation's 275 * domain name (e.g. org.illumos and org.zfsonlinux). Use of the org.openzfs 276 * domain name is recommended for new features which are developed by the 277 * OpenZFS community and its platforms. This domain may optionally be used by 278 * companies developing features for initial release through an OpenZFS 279 * implementation. Use of the org.openzfs domain requires reserving the 280 * feature name in advance with the OpenZFS project. 281 */ 282 void 283 zpool_feature_init(void) 284 { 285 zfeature_register(SPA_FEATURE_ASYNC_DESTROY, 286 "com.delphix:async_destroy", "async_destroy", 287 "Destroy filesystems asynchronously.", 288 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 289 290 zfeature_register(SPA_FEATURE_EMPTY_BPOBJ, 291 "com.delphix:empty_bpobj", "empty_bpobj", 292 "Snapshots use less space.", 293 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 294 295 zfeature_register(SPA_FEATURE_LZ4_COMPRESS, 296 "org.illumos:lz4_compress", "lz4_compress", 297 "LZ4 compression algorithm support.", 298 ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, ZFEATURE_TYPE_BOOLEAN, NULL); 299 300 zfeature_register(SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, 301 "com.joyent:multi_vdev_crash_dump", "multi_vdev_crash_dump", 302 "Crash dumps to multiple vdev pools.", 303 0, ZFEATURE_TYPE_BOOLEAN, NULL); 304 305 zfeature_register(SPA_FEATURE_SPACEMAP_HISTOGRAM, 306 "com.delphix:spacemap_histogram", "spacemap_histogram", 307 "Spacemaps maintain space histograms.", 308 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 309 310 zfeature_register(SPA_FEATURE_ENABLED_TXG, 311 "com.delphix:enabled_txg", "enabled_txg", 312 "Record txg at which a feature is enabled", 313 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 314 315 { 316 static const spa_feature_t hole_birth_deps[] = { 317 SPA_FEATURE_ENABLED_TXG, 318 SPA_FEATURE_NONE 319 }; 320 zfeature_register(SPA_FEATURE_HOLE_BIRTH, 321 "com.delphix:hole_birth", "hole_birth", 322 "Retain hole birth txg for more precise zfs send", 323 ZFEATURE_FLAG_MOS | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, 324 ZFEATURE_TYPE_BOOLEAN, hole_birth_deps); 325 } 326 327 zfeature_register(SPA_FEATURE_POOL_CHECKPOINT, 328 "com.delphix:zpool_checkpoint", "zpool_checkpoint", 329 "Pool state can be checkpointed, allowing rewind later.", 330 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 331 332 zfeature_register(SPA_FEATURE_SPACEMAP_V2, 333 "com.delphix:spacemap_v2", "spacemap_v2", 334 "Space maps representing large segments are more efficient.", 335 ZFEATURE_FLAG_READONLY_COMPAT | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, 336 ZFEATURE_TYPE_BOOLEAN, NULL); 337 338 zfeature_register(SPA_FEATURE_EXTENSIBLE_DATASET, 339 "com.delphix:extensible_dataset", "extensible_dataset", 340 "Enhanced dataset functionality, used by other features.", 341 0, ZFEATURE_TYPE_BOOLEAN, NULL); 342 343 { 344 static const spa_feature_t bookmarks_deps[] = { 345 SPA_FEATURE_EXTENSIBLE_DATASET, 346 SPA_FEATURE_NONE 347 }; 348 349 zfeature_register(SPA_FEATURE_BOOKMARKS, 350 "com.delphix:bookmarks", "bookmarks", 351 "\"zfs bookmark\" command", 352 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, 353 bookmarks_deps); 354 } 355 356 { 357 static const spa_feature_t filesystem_limits_deps[] = { 358 SPA_FEATURE_EXTENSIBLE_DATASET, 359 SPA_FEATURE_NONE 360 }; 361 zfeature_register(SPA_FEATURE_FS_SS_LIMIT, 362 "com.joyent:filesystem_limits", "filesystem_limits", 363 "Filesystem and snapshot limits.", 364 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, 365 filesystem_limits_deps); 366 } 367 368 zfeature_register(SPA_FEATURE_EMBEDDED_DATA, 369 "com.delphix:embedded_data", "embedded_data", 370 "Blocks which compress very well use even less space.", 371 ZFEATURE_FLAG_MOS | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, 372 ZFEATURE_TYPE_BOOLEAN, NULL); 373 374 { 375 static const spa_feature_t livelist_deps[] = { 376 SPA_FEATURE_EXTENSIBLE_DATASET, 377 SPA_FEATURE_NONE 378 }; 379 zfeature_register(SPA_FEATURE_LIVELIST, 380 "com.delphix:livelist", "livelist", 381 "Improved clone deletion performance.", 382 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, 383 livelist_deps); 384 } 385 386 { 387 static const spa_feature_t log_spacemap_deps[] = { 388 SPA_FEATURE_SPACEMAP_V2, 389 SPA_FEATURE_NONE 390 }; 391 zfeature_register(SPA_FEATURE_LOG_SPACEMAP, 392 "com.delphix:log_spacemap", "log_spacemap", 393 "Log metaslab changes on a single spacemap and " 394 "flush them periodically.", 395 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, 396 log_spacemap_deps); 397 } 398 399 { 400 static const spa_feature_t large_blocks_deps[] = { 401 SPA_FEATURE_EXTENSIBLE_DATASET, 402 SPA_FEATURE_NONE 403 }; 404 zfeature_register(SPA_FEATURE_LARGE_BLOCKS, 405 "org.open-zfs:large_blocks", "large_blocks", 406 "Support for blocks larger than 128KB.", 407 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, 408 large_blocks_deps); 409 } 410 411 { 412 static const spa_feature_t large_dnode_deps[] = { 413 SPA_FEATURE_EXTENSIBLE_DATASET, 414 SPA_FEATURE_NONE 415 }; 416 zfeature_register(SPA_FEATURE_LARGE_DNODE, 417 "org.zfsonlinux:large_dnode", "large_dnode", 418 "Variable on-disk size of dnodes.", 419 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, 420 large_dnode_deps); 421 } 422 423 { 424 static const spa_feature_t sha512_deps[] = { 425 SPA_FEATURE_EXTENSIBLE_DATASET, 426 SPA_FEATURE_NONE 427 }; 428 zfeature_register(SPA_FEATURE_SHA512, 429 "org.illumos:sha512", "sha512", 430 "SHA-512/256 hash algorithm.", 431 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, 432 sha512_deps); 433 } 434 435 { 436 static const spa_feature_t skein_deps[] = { 437 SPA_FEATURE_EXTENSIBLE_DATASET, 438 SPA_FEATURE_NONE 439 }; 440 zfeature_register(SPA_FEATURE_SKEIN, 441 "org.illumos:skein", "skein", 442 "Skein hash algorithm.", 443 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, 444 skein_deps); 445 } 446 447 { 448 static const spa_feature_t edonr_deps[] = { 449 SPA_FEATURE_EXTENSIBLE_DATASET, 450 SPA_FEATURE_NONE 451 }; 452 zfeature_register(SPA_FEATURE_EDONR, 453 "org.illumos:edonr", "edonr", 454 "Edon-R hash algorithm.", 455 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, 456 edonr_deps); 457 } 458 459 { 460 static const spa_feature_t redact_books_deps[] = { 461 SPA_FEATURE_BOOKMARK_V2, 462 SPA_FEATURE_EXTENSIBLE_DATASET, 463 SPA_FEATURE_BOOKMARKS, 464 SPA_FEATURE_NONE 465 }; 466 zfeature_register(SPA_FEATURE_REDACTION_BOOKMARKS, 467 "com.delphix:redaction_bookmarks", "redaction_bookmarks", 468 "Support for bookmarks which store redaction lists for zfs " 469 "redacted send/recv.", 0, ZFEATURE_TYPE_BOOLEAN, 470 redact_books_deps); 471 } 472 473 { 474 static const spa_feature_t redact_datasets_deps[] = { 475 SPA_FEATURE_EXTENSIBLE_DATASET, 476 SPA_FEATURE_NONE 477 }; 478 zfeature_register(SPA_FEATURE_REDACTED_DATASETS, 479 "com.delphix:redacted_datasets", "redacted_datasets", "Support for " 480 "redacted datasets, produced by receiving a redacted zfs send " 481 "stream.", ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_UINT64_ARRAY, 482 redact_datasets_deps); 483 } 484 485 { 486 static const spa_feature_t bookmark_written_deps[] = { 487 SPA_FEATURE_BOOKMARK_V2, 488 SPA_FEATURE_EXTENSIBLE_DATASET, 489 SPA_FEATURE_BOOKMARKS, 490 SPA_FEATURE_NONE 491 }; 492 zfeature_register(SPA_FEATURE_BOOKMARK_WRITTEN, 493 "com.delphix:bookmark_written", "bookmark_written", 494 "Additional accounting, enabling the written#<bookmark> property" 495 "(space written since a bookmark), and estimates of send stream " 496 "sizes for incrementals from bookmarks.", 497 0, ZFEATURE_TYPE_BOOLEAN, bookmark_written_deps); 498 } 499 500 zfeature_register(SPA_FEATURE_DEVICE_REMOVAL, 501 "com.delphix:device_removal", "device_removal", 502 "Top-level vdevs can be removed, reducing logical pool size.", 503 ZFEATURE_FLAG_MOS, ZFEATURE_TYPE_BOOLEAN, NULL); 504 505 { 506 static const spa_feature_t obsolete_counts_deps[] = { 507 SPA_FEATURE_EXTENSIBLE_DATASET, 508 SPA_FEATURE_DEVICE_REMOVAL, 509 SPA_FEATURE_NONE 510 }; 511 zfeature_register(SPA_FEATURE_OBSOLETE_COUNTS, 512 "com.delphix:obsolete_counts", "obsolete_counts", 513 "Reduce memory used by removed devices when their blocks are " 514 "freed or remapped.", 515 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, 516 obsolete_counts_deps); 517 } 518 519 { 520 static const spa_feature_t userobj_accounting_deps[] = { 521 SPA_FEATURE_EXTENSIBLE_DATASET, 522 SPA_FEATURE_NONE 523 }; 524 zfeature_register(SPA_FEATURE_USEROBJ_ACCOUNTING, 525 "org.zfsonlinux:userobj_accounting", "userobj_accounting", 526 "User/Group object accounting.", 527 ZFEATURE_FLAG_READONLY_COMPAT | ZFEATURE_FLAG_PER_DATASET, 528 ZFEATURE_TYPE_BOOLEAN, userobj_accounting_deps); 529 } 530 531 { 532 static const spa_feature_t bookmark_v2_deps[] = { 533 SPA_FEATURE_EXTENSIBLE_DATASET, 534 SPA_FEATURE_BOOKMARKS, 535 SPA_FEATURE_NONE 536 }; 537 zfeature_register(SPA_FEATURE_BOOKMARK_V2, 538 "com.datto:bookmark_v2", "bookmark_v2", 539 "Support for larger bookmarks", 540 0, ZFEATURE_TYPE_BOOLEAN, bookmark_v2_deps); 541 } 542 543 { 544 static const spa_feature_t encryption_deps[] = { 545 SPA_FEATURE_EXTENSIBLE_DATASET, 546 SPA_FEATURE_BOOKMARK_V2, 547 SPA_FEATURE_NONE 548 }; 549 zfeature_register(SPA_FEATURE_ENCRYPTION, 550 "com.datto:encryption", "encryption", 551 "Support for dataset level encryption", 552 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, 553 encryption_deps); 554 } 555 556 { 557 static const spa_feature_t project_quota_deps[] = { 558 SPA_FEATURE_EXTENSIBLE_DATASET, 559 SPA_FEATURE_NONE 560 }; 561 zfeature_register(SPA_FEATURE_PROJECT_QUOTA, 562 "org.zfsonlinux:project_quota", "project_quota", 563 "space/object accounting based on project ID.", 564 ZFEATURE_FLAG_READONLY_COMPAT | ZFEATURE_FLAG_PER_DATASET, 565 ZFEATURE_TYPE_BOOLEAN, project_quota_deps); 566 } 567 568 zfeature_register(SPA_FEATURE_ALLOCATION_CLASSES, 569 "org.zfsonlinux:allocation_classes", "allocation_classes", 570 "Support for separate allocation classes.", 571 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 572 573 zfeature_register(SPA_FEATURE_RESILVER_DEFER, 574 "com.datto:resilver_defer", "resilver_defer", 575 "Support for deferring new resilvers when one is already running.", 576 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 577 578 zfeature_register(SPA_FEATURE_DEVICE_REBUILD, 579 "org.openzfs:device_rebuild", "device_rebuild", 580 "Support for sequential mirror/dRAID device rebuilds", 581 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL); 582 583 { 584 static const spa_feature_t zstd_deps[] = { 585 SPA_FEATURE_EXTENSIBLE_DATASET, 586 SPA_FEATURE_NONE 587 }; 588 zfeature_register(SPA_FEATURE_ZSTD_COMPRESS, 589 "org.freebsd:zstd_compress", "zstd_compress", 590 "zstd compression algorithm support.", 591 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, zstd_deps); 592 } 593 594 zfeature_register(SPA_FEATURE_DRAID, 595 "org.openzfs:draid", "draid", "Support for distributed spare RAID", 596 ZFEATURE_FLAG_MOS, ZFEATURE_TYPE_BOOLEAN, NULL); 597 } 598 599 #if defined(_KERNEL) 600 EXPORT_SYMBOL(zfeature_lookup_guid); 601 EXPORT_SYMBOL(zfeature_lookup_name); 602 EXPORT_SYMBOL(zfeature_is_supported); 603 EXPORT_SYMBOL(zfeature_is_valid_guid); 604 EXPORT_SYMBOL(zfeature_depends_on); 605 EXPORT_SYMBOL(zpool_feature_init); 606 EXPORT_SYMBOL(spa_feature_table); 607 #endif 608