1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or https://opensource.org/licenses/CDDL-1.0.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23 /*
24 * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
25 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
26 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
27 * Copyright (c) 2014, Nexenta Systems, Inc. All rights reserved.
28 * Copyright (c) 2017, Intel Corporation.
29 * Copyright (c) 2019, 2024, Klara, Inc.
30 * Copyright (c) 2019, Allan Jude
31 */
32
33 #ifndef _KERNEL
34 #include <errno.h>
35 #include <string.h>
36 #include <dirent.h>
37 #include <search.h>
38 #include <sys/stat.h>
39 #endif
40 #include <sys/debug.h>
41 #include <sys/fs/zfs.h>
42 #include <sys/inttypes.h>
43 #include <sys/types.h>
44 #include <sys/param.h>
45 #include <sys/zfs_sysfs.h>
46 #include "zfeature_common.h"
47
48 /*
49 * Set to disable all feature checks while opening pools, allowing pools with
50 * unsupported features to be opened. Set for testing only.
51 */
52 boolean_t zfeature_checks_disable = B_FALSE;
53
54 zfeature_info_t spa_feature_table[SPA_FEATURES];
55
56 /*
57 * Valid characters for feature guids. This list is mainly for aesthetic
58 * purposes and could be expanded in the future. There are different allowed
59 * characters in the guids reverse dns portion (before the colon) and its
60 * short name (after the colon).
61 */
62 static int
valid_char(char c,boolean_t after_colon)63 valid_char(char c, boolean_t after_colon)
64 {
65 return ((c >= 'a' && c <= 'z') ||
66 (c >= '0' && c <= '9') ||
67 (after_colon && c == '_') ||
68 (!after_colon && (c == '.' || c == '-')));
69 }
70
71 /*
72 * Every feature guid must contain exactly one colon which separates a reverse
73 * dns organization name from the feature's "short" name (e.g.
74 * "com.company:feature_name").
75 */
76 boolean_t
zfeature_is_valid_guid(const char * name)77 zfeature_is_valid_guid(const char *name)
78 {
79 int i;
80 boolean_t has_colon = B_FALSE;
81
82 i = 0;
83 while (name[i] != '\0') {
84 char c = name[i++];
85 if (c == ':') {
86 if (has_colon)
87 return (B_FALSE);
88 has_colon = B_TRUE;
89 continue;
90 }
91 if (!valid_char(c, has_colon))
92 return (B_FALSE);
93 }
94
95 return (has_colon);
96 }
97
98 boolean_t
zfeature_is_supported(const char * guid)99 zfeature_is_supported(const char *guid)
100 {
101 if (zfeature_checks_disable)
102 return (B_TRUE);
103
104 for (spa_feature_t i = 0; i < SPA_FEATURES; i++) {
105 zfeature_info_t *feature = &spa_feature_table[i];
106 if (!feature->fi_zfs_mod_supported)
107 continue;
108 if (strcmp(guid, feature->fi_guid) == 0)
109 return (B_TRUE);
110 }
111 return (B_FALSE);
112 }
113
114 int
zfeature_lookup_guid(const char * guid,spa_feature_t * res)115 zfeature_lookup_guid(const char *guid, spa_feature_t *res)
116 {
117 for (spa_feature_t i = 0; i < SPA_FEATURES; i++) {
118 zfeature_info_t *feature = &spa_feature_table[i];
119 if (!feature->fi_zfs_mod_supported)
120 continue;
121 if (strcmp(guid, feature->fi_guid) == 0) {
122 if (res != NULL)
123 *res = i;
124 return (0);
125 }
126 }
127
128 return (ENOENT);
129 }
130
131 int
zfeature_lookup_name(const char * name,spa_feature_t * res)132 zfeature_lookup_name(const char *name, spa_feature_t *res)
133 {
134 for (spa_feature_t i = 0; i < SPA_FEATURES; i++) {
135 zfeature_info_t *feature = &spa_feature_table[i];
136 if (!feature->fi_zfs_mod_supported)
137 continue;
138 if (strcmp(name, feature->fi_uname) == 0) {
139 if (res != NULL)
140 *res = i;
141 return (0);
142 }
143 }
144
145 return (ENOENT);
146 }
147
148 boolean_t
zfeature_depends_on(spa_feature_t fid,spa_feature_t check)149 zfeature_depends_on(spa_feature_t fid, spa_feature_t check)
150 {
151 zfeature_info_t *feature = &spa_feature_table[fid];
152
153 for (int i = 0; feature->fi_depends[i] != SPA_FEATURE_NONE; i++) {
154 if (feature->fi_depends[i] == check)
155 return (B_TRUE);
156 }
157 return (B_FALSE);
158 }
159
160 static boolean_t
deps_contains_feature(const spa_feature_t * deps,const spa_feature_t feature)161 deps_contains_feature(const spa_feature_t *deps, const spa_feature_t feature)
162 {
163 for (int i = 0; deps[i] != SPA_FEATURE_NONE; i++)
164 if (deps[i] == feature)
165 return (B_TRUE);
166
167 return (B_FALSE);
168 }
169
170 #define STRCMP ((int(*)(const void *, const void *))&strcmp)
171 struct zfs_mod_supported_features {
172 void *tree;
173 boolean_t all_features;
174 };
175
176 struct zfs_mod_supported_features *
zfs_mod_list_supported(const char * scope)177 zfs_mod_list_supported(const char *scope)
178 {
179 #if defined(__FreeBSD__) || defined(_KERNEL) || defined(LIB_ZPOOL_BUILD)
180 (void) scope;
181 return (NULL);
182 #else
183 struct zfs_mod_supported_features *ret = calloc(1, sizeof (*ret));
184 if (ret == NULL)
185 return (NULL);
186
187 DIR *sysfs_dir = NULL;
188 char path[128];
189
190 if (snprintf(path, sizeof (path), "%s/%s",
191 ZFS_SYSFS_DIR, scope) < sizeof (path))
192 sysfs_dir = opendir(path);
193 if (sysfs_dir == NULL && errno == ENOENT) {
194 if (snprintf(path, sizeof (path), "%s/%s",
195 ZFS_SYSFS_ALT_DIR, scope) < sizeof (path))
196 sysfs_dir = opendir(path);
197 }
198 if (sysfs_dir == NULL) {
199 ret->all_features = errno == ENOENT &&
200 (access(ZFS_SYSFS_DIR, F_OK) == 0 ||
201 access(ZFS_SYSFS_ALT_DIR, F_OK) == 0);
202 return (ret);
203 }
204
205 struct dirent *node;
206 while ((node = readdir(sysfs_dir)) != NULL) {
207 if (strcmp(node->d_name, ".") == 0 ||
208 strcmp(node->d_name, "..") == 0)
209 continue;
210
211 char *name = strdup(node->d_name);
212 if (name == NULL) {
213 goto nomem;
214 }
215
216 if (tsearch(name, &ret->tree, STRCMP) == NULL) {
217 /*
218 * Don't bother checking for duplicate entries:
219 * we're iterating a single directory.
220 */
221 free(name);
222 goto nomem;
223 }
224 }
225
226 end:
227 closedir(sysfs_dir);
228 return (ret);
229
230 nomem:
231 zfs_mod_list_supported_free(ret);
232 ret = NULL;
233 goto end;
234 #endif
235 }
236
237 void
zfs_mod_list_supported_free(struct zfs_mod_supported_features * list)238 zfs_mod_list_supported_free(struct zfs_mod_supported_features *list)
239 {
240 #if !defined(__FreeBSD__) && !defined(_KERNEL) && !defined(LIB_ZPOOL_BUILD)
241 if (list) {
242 tdestroy(list->tree, free);
243 free(list);
244 }
245 #else
246 (void) list;
247 #endif
248 }
249
250 #if !defined(_KERNEL) && !defined(LIB_ZPOOL_BUILD)
251 static boolean_t
zfs_mod_supported_impl(const char * scope,const char * name,const char * sysfs)252 zfs_mod_supported_impl(const char *scope, const char *name, const char *sysfs)
253 {
254 char path[128];
255 if (snprintf(path, sizeof (path), "%s%s%s%s%s", sysfs,
256 scope == NULL ? "" : "/", scope ?: "",
257 name == NULL ? "" : "/", name ?: "") < sizeof (path))
258 return (access(path, F_OK) == 0);
259 else
260 return (B_FALSE);
261 }
262
263 boolean_t
zfs_mod_supported(const char * scope,const char * name,const struct zfs_mod_supported_features * sfeatures)264 zfs_mod_supported(const char *scope, const char *name,
265 const struct zfs_mod_supported_features *sfeatures)
266 {
267 boolean_t supported;
268
269 if (sfeatures != NULL)
270 return (sfeatures->all_features ||
271 tfind(name, &sfeatures->tree, STRCMP));
272
273 /*
274 * Check both the primary and alternate sysfs locations to determine
275 * if the required functionality is supported.
276 */
277 supported = (zfs_mod_supported_impl(scope, name, ZFS_SYSFS_DIR) ||
278 zfs_mod_supported_impl(scope, name, ZFS_SYSFS_ALT_DIR));
279
280 /*
281 * For backwards compatibility with kernel modules that predate
282 * supported feature/property checking. Report the feature/property
283 * as supported if the kernel module is loaded but the requested
284 * scope directory does not exist.
285 */
286 if (supported == B_FALSE) {
287 if ((access(ZFS_SYSFS_DIR, F_OK) == 0 &&
288 !zfs_mod_supported_impl(scope, NULL, ZFS_SYSFS_DIR)) ||
289 (access(ZFS_SYSFS_ALT_DIR, F_OK) == 0 &&
290 !zfs_mod_supported_impl(scope, NULL, ZFS_SYSFS_ALT_DIR))) {
291 supported = B_TRUE;
292 }
293 }
294
295 return (supported);
296 }
297 #endif
298
299 static boolean_t
zfs_mod_supported_feature(const char * name,const struct zfs_mod_supported_features * sfeatures)300 zfs_mod_supported_feature(const char *name,
301 const struct zfs_mod_supported_features *sfeatures)
302 {
303 /*
304 * The zfs module spa_feature_table[], whether in-kernel or in
305 * libzpool, always supports all the features. libzfs needs to
306 * query the running module, via sysfs, to determine which
307 * features are supported.
308 *
309 * The equivalent _can_ be done on FreeBSD by way of the sysctl
310 * tree, but this has not been done yet. Therefore, we return
311 * that all features are supported.
312 */
313
314 #if defined(_KERNEL) || defined(LIB_ZPOOL_BUILD) || defined(__FreeBSD__)
315 (void) name, (void) sfeatures;
316 return (B_TRUE);
317 #else
318 return (zfs_mod_supported(ZFS_SYSFS_POOL_FEATURES, name, sfeatures));
319 #endif
320 }
321
322 static void
zfeature_register(spa_feature_t fid,const char * guid,const char * name,const char * desc,zfeature_flags_t flags,zfeature_type_t type,const spa_feature_t * deps,const struct zfs_mod_supported_features * sfeatures)323 zfeature_register(spa_feature_t fid, const char *guid, const char *name,
324 const char *desc, zfeature_flags_t flags, zfeature_type_t type,
325 const spa_feature_t *deps,
326 const struct zfs_mod_supported_features *sfeatures)
327 {
328 zfeature_info_t *feature = &spa_feature_table[fid];
329 static const spa_feature_t nodeps[] = { SPA_FEATURE_NONE };
330
331 ASSERT(name != NULL);
332 ASSERT(desc != NULL);
333 ASSERT((flags & ZFEATURE_FLAG_READONLY_COMPAT) == 0 ||
334 (flags & ZFEATURE_FLAG_MOS) == 0);
335 ASSERT3U(fid, <, SPA_FEATURES);
336 ASSERT(zfeature_is_valid_guid(guid));
337
338 if (deps == NULL)
339 deps = nodeps;
340
341 VERIFY(((flags & ZFEATURE_FLAG_PER_DATASET) == 0) ||
342 (deps_contains_feature(deps, SPA_FEATURE_EXTENSIBLE_DATASET)));
343
344 feature->fi_feature = fid;
345 feature->fi_guid = guid;
346 feature->fi_uname = name;
347 feature->fi_desc = desc;
348 feature->fi_flags = flags;
349 feature->fi_type = type;
350 feature->fi_depends = deps;
351 feature->fi_zfs_mod_supported =
352 zfs_mod_supported_feature(guid, sfeatures);
353 }
354
355 /*
356 * Every feature has a GUID of the form com.example:feature_name. The
357 * reversed DNS name ensures that the feature's GUID is unique across all ZFS
358 * implementations. This allows companies to independently develop and
359 * release features. Examples include org.delphix and org.datto. Previously,
360 * features developed on one implementation have used that implementation's
361 * domain name (e.g. org.illumos and org.zfsonlinux). Use of the org.openzfs
362 * domain name is recommended for new features which are developed by the
363 * OpenZFS community and its platforms. This domain may optionally be used by
364 * companies developing features for initial release through an OpenZFS
365 * implementation. Use of the org.openzfs domain requires reserving the
366 * feature name in advance with the OpenZFS project.
367 */
368 void
zpool_feature_init(void)369 zpool_feature_init(void)
370 {
371 struct zfs_mod_supported_features *sfeatures =
372 zfs_mod_list_supported(ZFS_SYSFS_POOL_FEATURES);
373
374 zfeature_register(SPA_FEATURE_ASYNC_DESTROY,
375 "com.delphix:async_destroy", "async_destroy",
376 "Destroy filesystems asynchronously.",
377 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
378 sfeatures);
379
380 zfeature_register(SPA_FEATURE_EMPTY_BPOBJ,
381 "com.delphix:empty_bpobj", "empty_bpobj",
382 "Snapshots use less space.",
383 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
384 sfeatures);
385
386 zfeature_register(SPA_FEATURE_LZ4_COMPRESS,
387 "org.illumos:lz4_compress", "lz4_compress",
388 "LZ4 compression algorithm support.",
389 ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, ZFEATURE_TYPE_BOOLEAN, NULL,
390 sfeatures);
391
392 zfeature_register(SPA_FEATURE_MULTI_VDEV_CRASH_DUMP,
393 "com.joyent:multi_vdev_crash_dump", "multi_vdev_crash_dump",
394 "Crash dumps to multiple vdev pools.",
395 0, ZFEATURE_TYPE_BOOLEAN, NULL, sfeatures);
396
397 zfeature_register(SPA_FEATURE_SPACEMAP_HISTOGRAM,
398 "com.delphix:spacemap_histogram", "spacemap_histogram",
399 "Spacemaps maintain space histograms.",
400 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
401 sfeatures);
402
403 zfeature_register(SPA_FEATURE_ENABLED_TXG,
404 "com.delphix:enabled_txg", "enabled_txg",
405 "Record txg at which a feature is enabled",
406 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
407 sfeatures);
408
409 {
410 static const spa_feature_t hole_birth_deps[] = {
411 SPA_FEATURE_ENABLED_TXG,
412 SPA_FEATURE_NONE
413 };
414 zfeature_register(SPA_FEATURE_HOLE_BIRTH,
415 "com.delphix:hole_birth", "hole_birth",
416 "Retain hole birth txg for more precise zfs send",
417 ZFEATURE_FLAG_MOS | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE,
418 ZFEATURE_TYPE_BOOLEAN, hole_birth_deps, sfeatures);
419 }
420
421 zfeature_register(SPA_FEATURE_POOL_CHECKPOINT,
422 "com.delphix:zpool_checkpoint", "zpool_checkpoint",
423 "Pool state can be checkpointed, allowing rewind later.",
424 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
425 sfeatures);
426
427 zfeature_register(SPA_FEATURE_SPACEMAP_V2,
428 "com.delphix:spacemap_v2", "spacemap_v2",
429 "Space maps representing large segments are more efficient.",
430 ZFEATURE_FLAG_READONLY_COMPAT | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE,
431 ZFEATURE_TYPE_BOOLEAN, NULL, sfeatures);
432
433 zfeature_register(SPA_FEATURE_EXTENSIBLE_DATASET,
434 "com.delphix:extensible_dataset", "extensible_dataset",
435 "Enhanced dataset functionality, used by other features.",
436 0, ZFEATURE_TYPE_BOOLEAN, NULL, sfeatures);
437
438 {
439 static const spa_feature_t bookmarks_deps[] = {
440 SPA_FEATURE_EXTENSIBLE_DATASET,
441 SPA_FEATURE_NONE
442 };
443
444 zfeature_register(SPA_FEATURE_BOOKMARKS,
445 "com.delphix:bookmarks", "bookmarks",
446 "\"zfs bookmark\" command",
447 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN,
448 bookmarks_deps, sfeatures);
449 }
450
451 {
452 static const spa_feature_t filesystem_limits_deps[] = {
453 SPA_FEATURE_EXTENSIBLE_DATASET,
454 SPA_FEATURE_NONE
455 };
456 zfeature_register(SPA_FEATURE_FS_SS_LIMIT,
457 "com.joyent:filesystem_limits", "filesystem_limits",
458 "Filesystem and snapshot limits.",
459 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN,
460 filesystem_limits_deps, sfeatures);
461 }
462
463 zfeature_register(SPA_FEATURE_EMBEDDED_DATA,
464 "com.delphix:embedded_data", "embedded_data",
465 "Blocks which compress very well use even less space.",
466 ZFEATURE_FLAG_MOS | ZFEATURE_FLAG_ACTIVATE_ON_ENABLE,
467 ZFEATURE_TYPE_BOOLEAN, NULL, sfeatures);
468
469 {
470 static const spa_feature_t livelist_deps[] = {
471 SPA_FEATURE_EXTENSIBLE_DATASET,
472 SPA_FEATURE_NONE
473 };
474 zfeature_register(SPA_FEATURE_LIVELIST,
475 "com.delphix:livelist", "livelist",
476 "Improved clone deletion performance.",
477 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN,
478 livelist_deps, sfeatures);
479 }
480
481 {
482 static const spa_feature_t log_spacemap_deps[] = {
483 SPA_FEATURE_SPACEMAP_V2,
484 SPA_FEATURE_NONE
485 };
486 zfeature_register(SPA_FEATURE_LOG_SPACEMAP,
487 "com.delphix:log_spacemap", "log_spacemap",
488 "Log metaslab changes on a single spacemap and "
489 "flush them periodically.",
490 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN,
491 log_spacemap_deps, sfeatures);
492 }
493
494 {
495 static const spa_feature_t large_blocks_deps[] = {
496 SPA_FEATURE_EXTENSIBLE_DATASET,
497 SPA_FEATURE_NONE
498 };
499 zfeature_register(SPA_FEATURE_LARGE_BLOCKS,
500 "org.open-zfs:large_blocks", "large_blocks",
501 "Support for blocks larger than 128KB.",
502 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
503 large_blocks_deps, sfeatures);
504 }
505
506 {
507 static const spa_feature_t large_dnode_deps[] = {
508 SPA_FEATURE_EXTENSIBLE_DATASET,
509 SPA_FEATURE_NONE
510 };
511 zfeature_register(SPA_FEATURE_LARGE_DNODE,
512 "org.zfsonlinux:large_dnode", "large_dnode",
513 "Variable on-disk size of dnodes.",
514 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
515 large_dnode_deps, sfeatures);
516 }
517
518 {
519 static const spa_feature_t sha512_deps[] = {
520 SPA_FEATURE_EXTENSIBLE_DATASET,
521 SPA_FEATURE_NONE
522 };
523 zfeature_register(SPA_FEATURE_SHA512,
524 "org.illumos:sha512", "sha512",
525 "SHA-512/256 hash algorithm.",
526 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
527 sha512_deps, sfeatures);
528 }
529
530 {
531 static const spa_feature_t skein_deps[] = {
532 SPA_FEATURE_EXTENSIBLE_DATASET,
533 SPA_FEATURE_NONE
534 };
535 zfeature_register(SPA_FEATURE_SKEIN,
536 "org.illumos:skein", "skein",
537 "Skein hash algorithm.",
538 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
539 skein_deps, sfeatures);
540 }
541
542 {
543 static const spa_feature_t edonr_deps[] = {
544 SPA_FEATURE_EXTENSIBLE_DATASET,
545 SPA_FEATURE_NONE
546 };
547 zfeature_register(SPA_FEATURE_EDONR,
548 "org.illumos:edonr", "edonr",
549 "Edon-R hash algorithm.",
550 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
551 edonr_deps, sfeatures);
552 }
553
554 {
555 static const spa_feature_t redact_books_deps[] = {
556 SPA_FEATURE_BOOKMARK_V2,
557 SPA_FEATURE_EXTENSIBLE_DATASET,
558 SPA_FEATURE_BOOKMARKS,
559 SPA_FEATURE_NONE
560 };
561 zfeature_register(SPA_FEATURE_REDACTION_BOOKMARKS,
562 "com.delphix:redaction_bookmarks", "redaction_bookmarks",
563 "Support for bookmarks which store redaction lists for zfs "
564 "redacted send/recv.", 0, ZFEATURE_TYPE_BOOLEAN,
565 redact_books_deps, sfeatures);
566 }
567
568 {
569 static const spa_feature_t redact_datasets_deps[] = {
570 SPA_FEATURE_EXTENSIBLE_DATASET,
571 SPA_FEATURE_NONE
572 };
573 zfeature_register(SPA_FEATURE_REDACTED_DATASETS,
574 "com.delphix:redacted_datasets", "redacted_datasets",
575 "Support for redacted datasets, produced by receiving "
576 "a redacted zfs send stream.",
577 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_UINT64_ARRAY,
578 redact_datasets_deps, sfeatures);
579 }
580
581 {
582 static const spa_feature_t bookmark_written_deps[] = {
583 SPA_FEATURE_BOOKMARK_V2,
584 SPA_FEATURE_EXTENSIBLE_DATASET,
585 SPA_FEATURE_BOOKMARKS,
586 SPA_FEATURE_NONE
587 };
588 zfeature_register(SPA_FEATURE_BOOKMARK_WRITTEN,
589 "com.delphix:bookmark_written", "bookmark_written",
590 "Additional accounting, enabling the written#<bookmark> "
591 "property (space written since a bookmark), "
592 "and estimates of send stream sizes for incrementals from "
593 "bookmarks.",
594 0, ZFEATURE_TYPE_BOOLEAN, bookmark_written_deps, sfeatures);
595 }
596
597 zfeature_register(SPA_FEATURE_DEVICE_REMOVAL,
598 "com.delphix:device_removal", "device_removal",
599 "Top-level vdevs can be removed, reducing logical pool size.",
600 ZFEATURE_FLAG_MOS, ZFEATURE_TYPE_BOOLEAN, NULL, sfeatures);
601
602 {
603 static const spa_feature_t obsolete_counts_deps[] = {
604 SPA_FEATURE_EXTENSIBLE_DATASET,
605 SPA_FEATURE_DEVICE_REMOVAL,
606 SPA_FEATURE_NONE
607 };
608 zfeature_register(SPA_FEATURE_OBSOLETE_COUNTS,
609 "com.delphix:obsolete_counts", "obsolete_counts",
610 "Reduce memory used by removed devices when their blocks "
611 "are freed or remapped.",
612 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN,
613 obsolete_counts_deps, sfeatures);
614 }
615
616 {
617 static const spa_feature_t userobj_accounting_deps[] = {
618 SPA_FEATURE_EXTENSIBLE_DATASET,
619 SPA_FEATURE_NONE
620 };
621 zfeature_register(SPA_FEATURE_USEROBJ_ACCOUNTING,
622 "org.zfsonlinux:userobj_accounting", "userobj_accounting",
623 "User/Group object accounting.",
624 ZFEATURE_FLAG_READONLY_COMPAT | ZFEATURE_FLAG_PER_DATASET,
625 ZFEATURE_TYPE_BOOLEAN, userobj_accounting_deps, sfeatures);
626 }
627
628 {
629 static const spa_feature_t bookmark_v2_deps[] = {
630 SPA_FEATURE_EXTENSIBLE_DATASET,
631 SPA_FEATURE_BOOKMARKS,
632 SPA_FEATURE_NONE
633 };
634 zfeature_register(SPA_FEATURE_BOOKMARK_V2,
635 "com.datto:bookmark_v2", "bookmark_v2",
636 "Support for larger bookmarks",
637 0, ZFEATURE_TYPE_BOOLEAN, bookmark_v2_deps, sfeatures);
638 }
639
640 {
641 static const spa_feature_t encryption_deps[] = {
642 SPA_FEATURE_EXTENSIBLE_DATASET,
643 SPA_FEATURE_BOOKMARK_V2,
644 SPA_FEATURE_NONE
645 };
646 zfeature_register(SPA_FEATURE_ENCRYPTION,
647 "com.datto:encryption", "encryption",
648 "Support for dataset level encryption",
649 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
650 encryption_deps, sfeatures);
651 }
652
653 {
654 static const spa_feature_t project_quota_deps[] = {
655 SPA_FEATURE_EXTENSIBLE_DATASET,
656 SPA_FEATURE_NONE
657 };
658 zfeature_register(SPA_FEATURE_PROJECT_QUOTA,
659 "org.zfsonlinux:project_quota", "project_quota",
660 "space/object accounting based on project ID.",
661 ZFEATURE_FLAG_READONLY_COMPAT | ZFEATURE_FLAG_PER_DATASET,
662 ZFEATURE_TYPE_BOOLEAN, project_quota_deps, sfeatures);
663 }
664
665 zfeature_register(SPA_FEATURE_ALLOCATION_CLASSES,
666 "org.zfsonlinux:allocation_classes", "allocation_classes",
667 "Support for separate allocation classes.",
668 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
669 sfeatures);
670
671 zfeature_register(SPA_FEATURE_RESILVER_DEFER,
672 "com.datto:resilver_defer", "resilver_defer",
673 "Support for deferring new resilvers when one is already running.",
674 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
675 sfeatures);
676
677 zfeature_register(SPA_FEATURE_DEVICE_REBUILD,
678 "org.openzfs:device_rebuild", "device_rebuild",
679 "Support for sequential mirror/dRAID device rebuilds",
680 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
681 sfeatures);
682
683 {
684 static const spa_feature_t zstd_deps[] = {
685 SPA_FEATURE_EXTENSIBLE_DATASET,
686 SPA_FEATURE_NONE
687 };
688 zfeature_register(SPA_FEATURE_ZSTD_COMPRESS,
689 "org.freebsd:zstd_compress", "zstd_compress",
690 "zstd compression algorithm support.",
691 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN, zstd_deps,
692 sfeatures);
693 }
694
695 zfeature_register(SPA_FEATURE_DRAID,
696 "org.openzfs:draid", "draid", "Support for distributed spare RAID",
697 ZFEATURE_FLAG_MOS, ZFEATURE_TYPE_BOOLEAN, NULL, sfeatures);
698
699 {
700 static const spa_feature_t zilsaxattr_deps[] = {
701 SPA_FEATURE_EXTENSIBLE_DATASET,
702 SPA_FEATURE_NONE
703 };
704 zfeature_register(SPA_FEATURE_ZILSAXATTR,
705 "org.openzfs:zilsaxattr", "zilsaxattr",
706 "Support for xattr=sa extended attribute logging in ZIL.",
707 ZFEATURE_FLAG_PER_DATASET | ZFEATURE_FLAG_READONLY_COMPAT,
708 ZFEATURE_TYPE_BOOLEAN, zilsaxattr_deps, sfeatures);
709 }
710
711 zfeature_register(SPA_FEATURE_HEAD_ERRLOG,
712 "com.delphix:head_errlog", "head_errlog",
713 "Support for per-dataset on-disk error logs.",
714 ZFEATURE_FLAG_ACTIVATE_ON_ENABLE, ZFEATURE_TYPE_BOOLEAN, NULL,
715 sfeatures);
716
717 {
718 static const spa_feature_t blake3_deps[] = {
719 SPA_FEATURE_EXTENSIBLE_DATASET,
720 SPA_FEATURE_NONE
721 };
722 zfeature_register(SPA_FEATURE_BLAKE3,
723 "org.openzfs:blake3", "blake3",
724 "BLAKE3 hash algorithm.",
725 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
726 blake3_deps, sfeatures);
727 }
728
729 zfeature_register(SPA_FEATURE_BLOCK_CLONING,
730 "com.fudosecurity:block_cloning", "block_cloning",
731 "Support for block cloning via Block Reference Table.",
732 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
733 sfeatures);
734
735 zfeature_register(SPA_FEATURE_AVZ_V2,
736 "com.klarasystems:vdev_zaps_v2", "vdev_zaps_v2",
737 "Support for root vdev ZAP.",
738 ZFEATURE_FLAG_MOS, ZFEATURE_TYPE_BOOLEAN, NULL,
739 sfeatures);
740
741 {
742 static const spa_feature_t redact_list_spill_deps[] = {
743 SPA_FEATURE_REDACTION_BOOKMARKS,
744 SPA_FEATURE_NONE
745 };
746 zfeature_register(SPA_FEATURE_REDACTION_LIST_SPILL,
747 "com.delphix:redaction_list_spill", "redaction_list_spill",
748 "Support for increased number of redaction_snapshot "
749 "arguments in zfs redact.", 0, ZFEATURE_TYPE_BOOLEAN,
750 redact_list_spill_deps, sfeatures);
751 }
752
753 zfeature_register(SPA_FEATURE_RAIDZ_EXPANSION,
754 "org.openzfs:raidz_expansion", "raidz_expansion",
755 "Support for raidz expansion",
756 ZFEATURE_FLAG_MOS, ZFEATURE_TYPE_BOOLEAN, NULL, sfeatures);
757
758 zfeature_register(SPA_FEATURE_FAST_DEDUP,
759 "com.klarasystems:fast_dedup", "fast_dedup",
760 "Support for advanced deduplication",
761 ZFEATURE_FLAG_READONLY_COMPAT, ZFEATURE_TYPE_BOOLEAN, NULL,
762 sfeatures);
763
764 {
765 static const spa_feature_t longname_deps[] = {
766 SPA_FEATURE_EXTENSIBLE_DATASET,
767 SPA_FEATURE_NONE
768 };
769 zfeature_register(SPA_FEATURE_LONGNAME,
770 "org.zfsonlinux:longname", "longname",
771 "support filename up to 1024 bytes",
772 ZFEATURE_FLAG_PER_DATASET, ZFEATURE_TYPE_BOOLEAN,
773 longname_deps, sfeatures);
774 }
775
776 {
777 static const spa_feature_t large_microzap_deps[] = {
778 SPA_FEATURE_EXTENSIBLE_DATASET,
779 SPA_FEATURE_LARGE_BLOCKS,
780 SPA_FEATURE_NONE
781 };
782 zfeature_register(SPA_FEATURE_LARGE_MICROZAP,
783 "com.klarasystems:large_microzap", "large_microzap",
784 "Support for microzaps larger than 128KB.",
785 ZFEATURE_FLAG_PER_DATASET | ZFEATURE_FLAG_READONLY_COMPAT,
786 ZFEATURE_TYPE_BOOLEAN, large_microzap_deps, sfeatures);
787 }
788
789 zfs_mod_list_supported_free(sfeatures);
790 }
791
792 #if defined(_KERNEL)
793 EXPORT_SYMBOL(zfeature_lookup_guid);
794 EXPORT_SYMBOL(zfeature_lookup_name);
795 EXPORT_SYMBOL(zfeature_is_supported);
796 EXPORT_SYMBOL(zfeature_is_valid_guid);
797 EXPORT_SYMBOL(zfeature_depends_on);
798 EXPORT_SYMBOL(zpool_feature_init);
799 EXPORT_SYMBOL(spa_feature_table);
800 #endif
801