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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) 2010, Oracle and/or its affiliates. All rights reserved. | |
24 | * Copyright 2015 Nexenta Systems, Inc. All rights reserved. | |
25 | * Copyright (c) 2016, Intel Corporation. | |
26 | */ | |
27 | ||
28 | #include <stddef.h> | |
29 | #include <strings.h> | |
30 | #include <libuutil.h> | |
31 | #include <libzfs.h> | |
32 | #include <sys/types.h> | |
33 | #include <sys/time.h> | |
34 | #include <sys/fs/zfs.h> | |
35 | #include <sys/fm/protocol.h> | |
36 | #include <sys/fm/fs/zfs.h> | |
37 | ||
38 | #include "zfs_agents.h" | |
39 | #include "fmd_api.h" | |
40 | ||
41 | /* | |
42 | * Our serd engines are named 'zfs_<pool_guid>_<vdev_guid>_{checksum,io}'. This | |
43 | * #define reserves enough space for two 64-bit hex values plus the length of | |
44 | * the longest string. | |
45 | */ | |
46 | #define MAX_SERDLEN (16 * 2 + sizeof ("zfs___checksum")) | |
47 | ||
48 | /* | |
49 | * On-disk case structure. This must maintain backwards compatibility with | |
50 | * previous versions of the DE. By default, any members appended to the end | |
51 | * will be filled with zeros if they don't exist in a previous version. | |
52 | */ | |
53 | typedef struct zfs_case_data { | |
54 | uint64_t zc_version; | |
55 | uint64_t zc_ena; | |
56 | uint64_t zc_pool_guid; | |
57 | uint64_t zc_vdev_guid; | |
58 | int zc_pool_state; | |
59 | char zc_serd_checksum[MAX_SERDLEN]; | |
60 | char zc_serd_io[MAX_SERDLEN]; | |
61 | int zc_has_remove_timer; | |
62 | } zfs_case_data_t; | |
63 | ||
64 | /* | |
65 | * Time-of-day | |
66 | */ | |
67 | typedef struct er_timeval { | |
68 | uint64_t ertv_sec; | |
69 | uint64_t ertv_nsec; | |
70 | } er_timeval_t; | |
71 | ||
72 | /* | |
73 | * In-core case structure. | |
74 | */ | |
75 | typedef struct zfs_case { | |
76 | boolean_t zc_present; | |
77 | uint32_t zc_version; | |
78 | zfs_case_data_t zc_data; | |
79 | fmd_case_t *zc_case; | |
80 | uu_list_node_t zc_node; | |
81 | id_t zc_remove_timer; | |
82 | char *zc_fru; | |
83 | er_timeval_t zc_when; | |
84 | } zfs_case_t; | |
85 | ||
86 | #define CASE_DATA "data" | |
87 | #define CASE_FRU "fru" | |
88 | #define CASE_DATA_VERSION_INITIAL 1 | |
89 | #define CASE_DATA_VERSION_SERD 2 | |
90 | ||
91 | typedef struct zfs_de_stats { | |
92 | fmd_stat_t old_drops; | |
93 | fmd_stat_t dev_drops; | |
94 | fmd_stat_t vdev_drops; | |
95 | fmd_stat_t import_drops; | |
96 | fmd_stat_t resource_drops; | |
97 | } zfs_de_stats_t; | |
98 | ||
99 | zfs_de_stats_t zfs_stats = { | |
100 | { "old_drops", FMD_TYPE_UINT64, "ereports dropped (from before load)" }, | |
101 | { "dev_drops", FMD_TYPE_UINT64, "ereports dropped (dev during open)"}, | |
102 | { "vdev_drops", FMD_TYPE_UINT64, "ereports dropped (weird vdev types)"}, | |
103 | { "import_drops", FMD_TYPE_UINT64, "ereports dropped (during import)" }, | |
104 | { "resource_drops", FMD_TYPE_UINT64, "resource related ereports" } | |
105 | }; | |
106 | ||
107 | static hrtime_t zfs_remove_timeout; | |
108 | ||
109 | uu_list_pool_t *zfs_case_pool; | |
110 | uu_list_t *zfs_cases; | |
111 | ||
112 | #define ZFS_MAKE_RSRC(type) \ | |
113 | FM_RSRC_CLASS "." ZFS_ERROR_CLASS "." type | |
114 | #define ZFS_MAKE_EREPORT(type) \ | |
115 | FM_EREPORT_CLASS "." ZFS_ERROR_CLASS "." type | |
116 | ||
117 | /* | |
118 | * Write out the persistent representation of an active case. | |
119 | */ | |
120 | static void | |
121 | zfs_case_serialize(fmd_hdl_t *hdl, zfs_case_t *zcp) | |
122 | { | |
123 | zcp->zc_data.zc_version = CASE_DATA_VERSION_SERD; | |
124 | } | |
125 | ||
126 | /* | |
127 | * Read back the persistent representation of an active case. | |
128 | */ | |
129 | static zfs_case_t * | |
130 | zfs_case_unserialize(fmd_hdl_t *hdl, fmd_case_t *cp) | |
131 | { | |
132 | zfs_case_t *zcp; | |
133 | ||
134 | zcp = fmd_hdl_zalloc(hdl, sizeof (zfs_case_t), FMD_SLEEP); | |
135 | zcp->zc_case = cp; | |
136 | ||
137 | fmd_buf_read(hdl, cp, CASE_DATA, &zcp->zc_data, | |
138 | sizeof (zcp->zc_data)); | |
139 | ||
140 | if (zcp->zc_data.zc_version > CASE_DATA_VERSION_SERD) { | |
141 | fmd_hdl_free(hdl, zcp, sizeof (zfs_case_t)); | |
142 | return (NULL); | |
143 | } | |
144 | ||
145 | /* | |
146 | * fmd_buf_read() will have already zeroed out the remainder of the | |
147 | * buffer, so we don't have to do anything special if the version | |
148 | * doesn't include the SERD engine name. | |
149 | */ | |
150 | ||
151 | if (zcp->zc_data.zc_has_remove_timer) | |
152 | zcp->zc_remove_timer = fmd_timer_install(hdl, zcp, | |
153 | NULL, zfs_remove_timeout); | |
154 | ||
155 | uu_list_node_init(zcp, &zcp->zc_node, zfs_case_pool); | |
156 | (void) uu_list_insert_before(zfs_cases, NULL, zcp); | |
157 | ||
158 | fmd_case_setspecific(hdl, cp, zcp); | |
159 | ||
160 | return (zcp); | |
161 | } | |
162 | ||
163 | /* | |
164 | * Iterate over any active cases. If any cases are associated with a pool or | |
165 | * vdev which is no longer present on the system, close the associated case. | |
166 | */ | |
167 | static void | |
168 | zfs_mark_vdev(uint64_t pool_guid, nvlist_t *vd, er_timeval_t *loaded) | |
169 | { | |
170 | uint64_t vdev_guid; | |
171 | uint_t c, children; | |
172 | nvlist_t **child; | |
173 | zfs_case_t *zcp; | |
174 | int ret; | |
175 | ||
176 | ret = nvlist_lookup_uint64(vd, ZPOOL_CONFIG_GUID, &vdev_guid); | |
177 | assert(ret == 0); | |
178 | ||
179 | /* | |
180 | * Mark any cases associated with this (pool, vdev) pair. | |
181 | */ | |
182 | for (zcp = uu_list_first(zfs_cases); zcp != NULL; | |
183 | zcp = uu_list_next(zfs_cases, zcp)) { | |
184 | if (zcp->zc_data.zc_pool_guid == pool_guid && | |
185 | zcp->zc_data.zc_vdev_guid == vdev_guid) { | |
186 | zcp->zc_present = B_TRUE; | |
187 | zcp->zc_when = *loaded; | |
188 | } | |
189 | } | |
190 | ||
191 | /* | |
192 | * Iterate over all children. | |
193 | */ | |
194 | if (nvlist_lookup_nvlist_array(vd, ZPOOL_CONFIG_CHILDREN, &child, | |
195 | &children) == 0) { | |
196 | for (c = 0; c < children; c++) | |
197 | zfs_mark_vdev(pool_guid, child[c], loaded); | |
198 | } | |
199 | ||
200 | if (nvlist_lookup_nvlist_array(vd, ZPOOL_CONFIG_L2CACHE, &child, | |
201 | &children) == 0) { | |
202 | for (c = 0; c < children; c++) | |
203 | zfs_mark_vdev(pool_guid, child[c], loaded); | |
204 | } | |
205 | ||
206 | if (nvlist_lookup_nvlist_array(vd, ZPOOL_CONFIG_SPARES, &child, | |
207 | &children) == 0) { | |
208 | for (c = 0; c < children; c++) | |
209 | zfs_mark_vdev(pool_guid, child[c], loaded); | |
210 | } | |
211 | } | |
212 | ||
213 | /*ARGSUSED*/ | |
214 | static int | |
215 | zfs_mark_pool(zpool_handle_t *zhp, void *unused) | |
216 | { | |
217 | zfs_case_t *zcp; | |
218 | uint64_t pool_guid; | |
219 | uint64_t *tod; | |
220 | er_timeval_t loaded = { 0 }; | |
221 | nvlist_t *config, *vd; | |
222 | uint_t nelem = 0; | |
223 | int ret; | |
224 | ||
225 | pool_guid = zpool_get_prop_int(zhp, ZPOOL_PROP_GUID, NULL); | |
226 | /* | |
227 | * Mark any cases associated with just this pool. | |
228 | */ | |
229 | for (zcp = uu_list_first(zfs_cases); zcp != NULL; | |
230 | zcp = uu_list_next(zfs_cases, zcp)) { | |
231 | if (zcp->zc_data.zc_pool_guid == pool_guid && | |
232 | zcp->zc_data.zc_vdev_guid == 0) | |
233 | zcp->zc_present = B_TRUE; | |
234 | } | |
235 | ||
236 | if ((config = zpool_get_config(zhp, NULL)) == NULL) { | |
237 | zpool_close(zhp); | |
238 | return (-1); | |
239 | } | |
240 | ||
241 | (void) nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_LOADED_TIME, | |
242 | &tod, &nelem); | |
243 | if (nelem == 2) { | |
244 | loaded.ertv_sec = tod[0]; | |
245 | loaded.ertv_nsec = tod[1]; | |
246 | for (zcp = uu_list_first(zfs_cases); zcp != NULL; | |
247 | zcp = uu_list_next(zfs_cases, zcp)) { | |
248 | if (zcp->zc_data.zc_pool_guid == pool_guid && | |
249 | zcp->zc_data.zc_vdev_guid == 0) { | |
250 | zcp->zc_when = loaded; | |
251 | } | |
252 | } | |
253 | } | |
254 | ||
255 | ret = nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &vd); | |
256 | assert(ret == 0); | |
257 | ||
258 | zfs_mark_vdev(pool_guid, vd, &loaded); | |
259 | ||
260 | zpool_close(zhp); | |
261 | ||
262 | return (0); | |
263 | } | |
264 | ||
265 | struct load_time_arg { | |
266 | uint64_t lt_guid; | |
267 | er_timeval_t *lt_time; | |
268 | boolean_t lt_found; | |
269 | }; | |
270 | ||
271 | static int | |
272 | zpool_find_load_time(zpool_handle_t *zhp, void *arg) | |
273 | { | |
274 | struct load_time_arg *lta = arg; | |
275 | uint64_t pool_guid; | |
276 | uint64_t *tod; | |
277 | nvlist_t *config; | |
278 | uint_t nelem; | |
279 | ||
280 | if (lta->lt_found) { | |
281 | zpool_close(zhp); | |
282 | return (0); | |
283 | } | |
284 | ||
285 | pool_guid = zpool_get_prop_int(zhp, ZPOOL_PROP_GUID, NULL); | |
286 | if (pool_guid != lta->lt_guid) { | |
287 | zpool_close(zhp); | |
288 | return (0); | |
289 | } | |
290 | ||
291 | if ((config = zpool_get_config(zhp, NULL)) == NULL) { | |
292 | zpool_close(zhp); | |
293 | return (-1); | |
294 | } | |
295 | ||
296 | if (nvlist_lookup_uint64_array(config, ZPOOL_CONFIG_LOADED_TIME, | |
297 | &tod, &nelem) == 0 && nelem == 2) { | |
298 | lta->lt_found = B_TRUE; | |
299 | lta->lt_time->ertv_sec = tod[0]; | |
300 | lta->lt_time->ertv_nsec = tod[1]; | |
301 | } | |
302 | ||
303 | zpool_close(zhp); | |
304 | ||
305 | return (0); | |
306 | } | |
307 | ||
308 | static void | |
309 | zfs_purge_cases(fmd_hdl_t *hdl) | |
310 | { | |
311 | zfs_case_t *zcp; | |
312 | uu_list_walk_t *walk; | |
313 | libzfs_handle_t *zhdl = fmd_hdl_getspecific(hdl); | |
314 | ||
315 | /* | |
316 | * There is no way to open a pool by GUID, or lookup a vdev by GUID. No | |
317 | * matter what we do, we're going to have to stomach an O(vdevs * cases) | |
318 | * algorithm. In reality, both quantities are likely so small that | |
319 | * neither will matter. Given that iterating over pools is more | |
320 | * expensive than iterating over the in-memory case list, we opt for a | |
321 | * 'present' flag in each case that starts off cleared. We then iterate | |
322 | * over all pools, marking those that are still present, and removing | |
323 | * those that aren't found. | |
324 | * | |
325 | * Note that we could also construct an FMRI and rely on | |
326 | * fmd_nvl_fmri_present(), but this would end up doing the same search. | |
327 | */ | |
328 | ||
329 | /* | |
330 | * Mark the cases as not present. | |
331 | */ | |
332 | for (zcp = uu_list_first(zfs_cases); zcp != NULL; | |
333 | zcp = uu_list_next(zfs_cases, zcp)) | |
334 | zcp->zc_present = B_FALSE; | |
335 | ||
336 | /* | |
337 | * Iterate over all pools and mark the pools and vdevs found. If this | |
338 | * fails (most probably because we're out of memory), then don't close | |
339 | * any of the cases and we cannot be sure they are accurate. | |
340 | */ | |
341 | if (zpool_iter(zhdl, zfs_mark_pool, NULL) != 0) | |
342 | return; | |
343 | ||
344 | /* | |
345 | * Remove those cases which were not found. | |
346 | */ | |
347 | walk = uu_list_walk_start(zfs_cases, UU_WALK_ROBUST); | |
348 | while ((zcp = uu_list_walk_next(walk)) != NULL) { | |
349 | if (!zcp->zc_present) | |
350 | fmd_case_close(hdl, zcp->zc_case); | |
351 | } | |
352 | uu_list_walk_end(walk); | |
353 | } | |
354 | ||
355 | /* | |
356 | * Construct the name of a serd engine given the pool/vdev GUID and type (io or | |
357 | * checksum). | |
358 | */ | |
359 | static void | |
360 | zfs_serd_name(char *buf, uint64_t pool_guid, uint64_t vdev_guid, | |
361 | const char *type) | |
362 | { | |
363 | (void) snprintf(buf, MAX_SERDLEN, "zfs_%llx_%llx_%s", | |
364 | (long long unsigned int)pool_guid, | |
365 | (long long unsigned int)vdev_guid, type); | |
366 | } | |
367 | ||
368 | /* | |
369 | * Solve a given ZFS case. This first checks to make sure the diagnosis is | |
370 | * still valid, as well as cleaning up any pending timer associated with the | |
371 | * case. | |
372 | */ | |
373 | static void | |
374 | zfs_case_solve(fmd_hdl_t *hdl, zfs_case_t *zcp, const char *faultname, | |
375 | boolean_t checkunusable) | |
376 | { | |
377 | nvlist_t *detector, *fault; | |
378 | boolean_t serialize; | |
379 | nvlist_t *fru = NULL; | |
380 | #ifdef HAVE_LIBTOPO | |
381 | nvlist_t *fmri; | |
382 | topo_hdl_t *thp; | |
383 | int err; | |
384 | #endif | |
385 | fmd_hdl_debug(hdl, "solving fault '%s'", faultname); | |
386 | ||
387 | /* | |
388 | * Construct the detector from the case data. The detector is in the | |
389 | * ZFS scheme, and is either the pool or the vdev, depending on whether | |
390 | * this is a vdev or pool fault. | |
391 | */ | |
392 | detector = fmd_nvl_alloc(hdl, FMD_SLEEP); | |
393 | ||
394 | (void) nvlist_add_uint8(detector, FM_VERSION, ZFS_SCHEME_VERSION0); | |
395 | (void) nvlist_add_string(detector, FM_FMRI_SCHEME, FM_FMRI_SCHEME_ZFS); | |
396 | (void) nvlist_add_uint64(detector, FM_FMRI_ZFS_POOL, | |
397 | zcp->zc_data.zc_pool_guid); | |
398 | if (zcp->zc_data.zc_vdev_guid != 0) { | |
399 | (void) nvlist_add_uint64(detector, FM_FMRI_ZFS_VDEV, | |
400 | zcp->zc_data.zc_vdev_guid); | |
401 | } | |
402 | ||
403 | #ifdef HAVE_LIBTOPO | |
404 | /* | |
405 | * We also want to make sure that the detector (pool or vdev) properly | |
406 | * reflects the diagnosed state, when the fault corresponds to internal | |
407 | * ZFS state (i.e. not checksum or I/O error-induced). Otherwise, a | |
408 | * device which was unavailable early in boot (because the driver/file | |
409 | * wasn't available) and is now healthy will be mis-diagnosed. | |
410 | */ | |
411 | if (!fmd_nvl_fmri_present(hdl, detector) || | |
412 | (checkunusable && !fmd_nvl_fmri_unusable(hdl, detector))) { | |
413 | fmd_case_close(hdl, zcp->zc_case); | |
414 | nvlist_free(detector); | |
415 | return; | |
416 | } | |
417 | ||
418 | ||
419 | fru = NULL; | |
420 | if (zcp->zc_fru != NULL && | |
421 | (thp = fmd_hdl_topo_hold(hdl, TOPO_VERSION)) != NULL) { | |
422 | /* | |
423 | * If the vdev had an associated FRU, then get the FRU nvlist | |
424 | * from the topo handle and use that in the suspect list. We | |
425 | * explicitly lookup the FRU because the fmri reported from the | |
426 | * kernel may not have up to date details about the disk itself | |
427 | * (serial, part, etc). | |
428 | */ | |
429 | if (topo_fmri_str2nvl(thp, zcp->zc_fru, &fmri, &err) == 0) { | |
430 | libzfs_handle_t *zhdl = fmd_hdl_getspecific(hdl); | |
431 | ||
432 | /* | |
433 | * If the disk is part of the system chassis, but the | |
434 | * FRU indicates a different chassis ID than our | |
435 | * current system, then ignore the error. This | |
436 | * indicates that the device was part of another | |
437 | * cluster head, and for obvious reasons cannot be | |
438 | * imported on this system. | |
439 | */ | |
440 | if (libzfs_fru_notself(zhdl, zcp->zc_fru)) { | |
441 | fmd_case_close(hdl, zcp->zc_case); | |
442 | nvlist_free(fmri); | |
443 | fmd_hdl_topo_rele(hdl, thp); | |
444 | nvlist_free(detector); | |
445 | return; | |
446 | } | |
447 | ||
448 | /* | |
449 | * If the device is no longer present on the system, or | |
450 | * topo_fmri_fru() fails for other reasons, then fall | |
451 | * back to the fmri specified in the vdev. | |
452 | */ | |
453 | if (topo_fmri_fru(thp, fmri, &fru, &err) != 0) | |
454 | fru = fmd_nvl_dup(hdl, fmri, FMD_SLEEP); | |
455 | nvlist_free(fmri); | |
456 | } | |
457 | ||
458 | fmd_hdl_topo_rele(hdl, thp); | |
459 | } | |
460 | #endif | |
461 | fault = fmd_nvl_create_fault(hdl, faultname, 100, detector, | |
462 | fru, detector); | |
463 | fmd_case_add_suspect(hdl, zcp->zc_case, fault); | |
464 | ||
465 | nvlist_free(fru); | |
466 | ||
467 | fmd_case_solve(hdl, zcp->zc_case); | |
468 | ||
469 | serialize = B_FALSE; | |
470 | if (zcp->zc_data.zc_has_remove_timer) { | |
471 | fmd_timer_remove(hdl, zcp->zc_remove_timer); | |
472 | zcp->zc_data.zc_has_remove_timer = 0; | |
473 | serialize = B_TRUE; | |
474 | } | |
475 | if (serialize) | |
476 | zfs_case_serialize(hdl, zcp); | |
477 | ||
478 | nvlist_free(detector); | |
479 | } | |
480 | ||
481 | static boolean_t | |
482 | timeval_earlier(er_timeval_t *a, er_timeval_t *b) | |
483 | { | |
484 | return (a->ertv_sec < b->ertv_sec || | |
485 | (a->ertv_sec == b->ertv_sec && a->ertv_nsec < b->ertv_nsec)); | |
486 | } | |
487 | ||
488 | /*ARGSUSED*/ | |
489 | static void | |
490 | zfs_ereport_when(fmd_hdl_t *hdl, nvlist_t *nvl, er_timeval_t *when) | |
491 | { | |
492 | int64_t *tod; | |
493 | uint_t nelem; | |
494 | ||
495 | if (nvlist_lookup_int64_array(nvl, FM_EREPORT_TIME, &tod, | |
496 | &nelem) == 0 && nelem == 2) { | |
497 | when->ertv_sec = tod[0]; | |
498 | when->ertv_nsec = tod[1]; | |
499 | } else { | |
500 | when->ertv_sec = when->ertv_nsec = UINT64_MAX; | |
501 | } | |
502 | } | |
503 | ||
504 | /* | |
505 | * Main fmd entry point. | |
506 | */ | |
507 | /*ARGSUSED*/ | |
508 | static void | |
509 | zfs_fm_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class) | |
510 | { | |
511 | zfs_case_t *zcp, *dcp; | |
512 | int32_t pool_state; | |
513 | uint64_t ena, pool_guid, vdev_guid; | |
514 | er_timeval_t pool_load; | |
515 | er_timeval_t er_when; | |
516 | nvlist_t *detector; | |
517 | boolean_t pool_found = B_FALSE; | |
518 | boolean_t isresource; | |
519 | char *type; | |
520 | ||
521 | /* | |
522 | * We subscribe to notifications for vdev or pool removal. In these | |
523 | * cases, there may be cases that no longer apply. Purge any cases | |
524 | * that no longer apply. | |
525 | */ | |
526 | if (fmd_nvl_class_match(hdl, nvl, "sysevent.fs.zfs.*")) { | |
527 | fmd_hdl_debug(hdl, "purging orphaned cases from %s", | |
528 | strrchr(class, '.') + 1); | |
529 | zfs_purge_cases(hdl); | |
530 | zfs_stats.resource_drops.fmds_value.ui64++; | |
531 | return; | |
532 | } | |
533 | ||
534 | isresource = fmd_nvl_class_match(hdl, nvl, "resource.fs.zfs.*"); | |
535 | ||
536 | if (isresource) { | |
537 | /* | |
538 | * For resources, we don't have a normal payload. | |
539 | */ | |
540 | if (nvlist_lookup_uint64(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID, | |
541 | &vdev_guid) != 0) | |
542 | pool_state = SPA_LOAD_OPEN; | |
543 | else | |
544 | pool_state = SPA_LOAD_NONE; | |
545 | detector = NULL; | |
546 | } else { | |
547 | (void) nvlist_lookup_nvlist(nvl, | |
548 | FM_EREPORT_DETECTOR, &detector); | |
549 | (void) nvlist_lookup_int32(nvl, | |
550 | FM_EREPORT_PAYLOAD_ZFS_POOL_CONTEXT, &pool_state); | |
551 | } | |
552 | ||
553 | /* | |
554 | * We also ignore all ereports generated during an import of a pool, | |
555 | * since the only possible fault (.pool) would result in import failure, | |
556 | * and hence no persistent fault. Some day we may want to do something | |
557 | * with these ereports, so we continue generating them internally. | |
558 | */ | |
559 | if (pool_state == SPA_LOAD_IMPORT) { | |
560 | zfs_stats.import_drops.fmds_value.ui64++; | |
561 | fmd_hdl_debug(hdl, "ignoring '%s' during import", class); | |
562 | return; | |
563 | } | |
564 | ||
565 | /* | |
566 | * Device I/O errors are ignored during pool open. | |
567 | */ | |
568 | if (pool_state == SPA_LOAD_OPEN && | |
569 | (fmd_nvl_class_match(hdl, nvl, | |
570 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_CHECKSUM)) || | |
571 | fmd_nvl_class_match(hdl, nvl, | |
572 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_IO)) || | |
573 | fmd_nvl_class_match(hdl, nvl, | |
574 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_PROBE_FAILURE)))) { | |
575 | fmd_hdl_debug(hdl, "ignoring '%s' during pool open", class); | |
576 | zfs_stats.dev_drops.fmds_value.ui64++; | |
577 | return; | |
578 | } | |
579 | ||
580 | /* | |
581 | * We ignore ereports for anything except disks and files. | |
582 | */ | |
583 | if (nvlist_lookup_string(nvl, FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE, | |
584 | &type) == 0) { | |
585 | if (strcmp(type, VDEV_TYPE_DISK) != 0 && | |
586 | strcmp(type, VDEV_TYPE_FILE) != 0) { | |
587 | zfs_stats.vdev_drops.fmds_value.ui64++; | |
588 | return; | |
589 | } | |
590 | } | |
591 | ||
592 | /* | |
593 | * Determine if this ereport corresponds to an open case. | |
594 | * Each vdev or pool can have a single case. | |
595 | */ | |
596 | (void) nvlist_lookup_uint64(nvl, | |
597 | FM_EREPORT_PAYLOAD_ZFS_POOL_GUID, &pool_guid); | |
598 | if (nvlist_lookup_uint64(nvl, | |
599 | FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID, &vdev_guid) != 0) | |
600 | vdev_guid = 0; | |
601 | if (nvlist_lookup_uint64(nvl, FM_EREPORT_ENA, &ena) != 0) | |
602 | ena = 0; | |
603 | ||
604 | zfs_ereport_when(hdl, nvl, &er_when); | |
605 | ||
606 | for (zcp = uu_list_first(zfs_cases); zcp != NULL; | |
607 | zcp = uu_list_next(zfs_cases, zcp)) { | |
608 | if (zcp->zc_data.zc_pool_guid == pool_guid) { | |
609 | pool_found = B_TRUE; | |
610 | pool_load = zcp->zc_when; | |
611 | } | |
612 | if (zcp->zc_data.zc_vdev_guid == vdev_guid) | |
613 | break; | |
614 | } | |
615 | ||
616 | /* | |
617 | * Avoid falsely accusing a pool of being faulty. Do so by | |
618 | * not replaying ereports that were generated prior to the | |
619 | * current import. If the failure that generated them was | |
620 | * transient because the device was actually removed but we | |
621 | * didn't receive the normal asynchronous notification, we | |
622 | * don't want to mark it as faulted and potentially panic. If | |
623 | * there is still a problem we'd expect not to be able to | |
624 | * import the pool, or that new ereports will be generated | |
625 | * once the pool is used. | |
626 | */ | |
627 | if (pool_found && timeval_earlier(&er_when, &pool_load)) { | |
628 | fmd_hdl_debug(hdl, "ignoring pool %llx, " | |
629 | "ereport time %lld.%lld, pool load time = %lld.%lld", | |
630 | pool_guid, er_when.ertv_sec, er_when.ertv_nsec, | |
631 | pool_load.ertv_sec, pool_load.ertv_nsec); | |
632 | zfs_stats.old_drops.fmds_value.ui64++; | |
633 | return; | |
634 | } | |
635 | ||
636 | if (!pool_found) { | |
637 | /* | |
638 | * Haven't yet seen this pool, but same situation | |
639 | * may apply. | |
640 | */ | |
641 | libzfs_handle_t *zhdl = fmd_hdl_getspecific(hdl); | |
642 | struct load_time_arg la; | |
643 | ||
644 | la.lt_guid = pool_guid; | |
645 | la.lt_time = &pool_load; | |
646 | la.lt_found = B_FALSE; | |
647 | ||
648 | if (zhdl != NULL && | |
649 | zpool_iter(zhdl, zpool_find_load_time, &la) == 0 && | |
650 | la.lt_found == B_TRUE) { | |
651 | pool_found = B_TRUE; | |
652 | ||
653 | if (timeval_earlier(&er_when, &pool_load)) { | |
654 | fmd_hdl_debug(hdl, "ignoring pool %llx, " | |
655 | "ereport time %lld.%lld, " | |
656 | "pool load time = %lld.%lld", | |
657 | pool_guid, er_when.ertv_sec, | |
658 | er_when.ertv_nsec, pool_load.ertv_sec, | |
659 | pool_load.ertv_nsec); | |
660 | zfs_stats.old_drops.fmds_value.ui64++; | |
661 | return; | |
662 | } | |
663 | } | |
664 | } | |
665 | ||
666 | if (zcp == NULL) { | |
667 | fmd_case_t *cs; | |
668 | zfs_case_data_t data = { 0 }; | |
669 | ||
670 | /* | |
671 | * If this is one of our 'fake' resource ereports, and there is | |
672 | * no case open, simply discard it. | |
673 | */ | |
674 | if (isresource) { | |
675 | zfs_stats.resource_drops.fmds_value.ui64++; | |
676 | fmd_hdl_debug(hdl, "discarding '%s for vdev %llu", | |
677 | class, vdev_guid); | |
678 | return; | |
679 | } | |
680 | ||
681 | /* | |
682 | * Skip tracking some ereports | |
683 | */ | |
684 | if (strcmp(class, | |
685 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_DATA)) == 0 || | |
686 | strcmp(class, | |
687 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_CONFIG_CACHE_WRITE)) == 0 || | |
688 | strcmp(class, | |
689 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_DELAY)) == 0) { | |
690 | zfs_stats.resource_drops.fmds_value.ui64++; | |
691 | return; | |
692 | } | |
693 | ||
694 | /* | |
695 | * Open a new case. | |
696 | */ | |
697 | cs = fmd_case_open(hdl, NULL); | |
698 | ||
699 | fmd_hdl_debug(hdl, "opening case for vdev %llu due to '%s'", | |
700 | vdev_guid, class); | |
701 | ||
702 | /* | |
703 | * Initialize the case buffer. To commonize code, we actually | |
704 | * create the buffer with existing data, and then call | |
705 | * zfs_case_unserialize() to instantiate the in-core structure. | |
706 | */ | |
707 | fmd_buf_create(hdl, cs, CASE_DATA, sizeof (zfs_case_data_t)); | |
708 | ||
709 | data.zc_version = CASE_DATA_VERSION_SERD; | |
710 | data.zc_ena = ena; | |
711 | data.zc_pool_guid = pool_guid; | |
712 | data.zc_vdev_guid = vdev_guid; | |
713 | data.zc_pool_state = (int)pool_state; | |
714 | ||
715 | fmd_buf_write(hdl, cs, CASE_DATA, &data, sizeof (data)); | |
716 | ||
717 | zcp = zfs_case_unserialize(hdl, cs); | |
718 | assert(zcp != NULL); | |
719 | if (pool_found) | |
720 | zcp->zc_when = pool_load; | |
721 | } | |
722 | ||
723 | if (isresource) { | |
724 | fmd_hdl_debug(hdl, "resource event '%s'", class); | |
725 | ||
726 | if (fmd_nvl_class_match(hdl, nvl, | |
727 | ZFS_MAKE_RSRC(FM_RESOURCE_AUTOREPLACE))) { | |
728 | /* | |
729 | * The 'resource.fs.zfs.autoreplace' event indicates | |
730 | * that the pool was loaded with the 'autoreplace' | |
731 | * property set. In this case, any pending device | |
732 | * failures should be ignored, as the asynchronous | |
733 | * autoreplace handling will take care of them. | |
734 | */ | |
735 | fmd_case_close(hdl, zcp->zc_case); | |
736 | } else if (fmd_nvl_class_match(hdl, nvl, | |
737 | ZFS_MAKE_RSRC(FM_RESOURCE_REMOVED))) { | |
738 | /* | |
739 | * The 'resource.fs.zfs.removed' event indicates that | |
740 | * device removal was detected, and the device was | |
741 | * closed asynchronously. If this is the case, we | |
742 | * assume that any recent I/O errors were due to the | |
743 | * device removal, not any fault of the device itself. | |
744 | * We reset the SERD engine, and cancel any pending | |
745 | * timers. | |
746 | */ | |
747 | if (zcp->zc_data.zc_has_remove_timer) { | |
748 | fmd_timer_remove(hdl, zcp->zc_remove_timer); | |
749 | zcp->zc_data.zc_has_remove_timer = 0; | |
750 | zfs_case_serialize(hdl, zcp); | |
751 | } | |
752 | if (zcp->zc_data.zc_serd_io[0] != '\0') | |
753 | fmd_serd_reset(hdl, zcp->zc_data.zc_serd_io); | |
754 | if (zcp->zc_data.zc_serd_checksum[0] != '\0') | |
755 | fmd_serd_reset(hdl, | |
756 | zcp->zc_data.zc_serd_checksum); | |
757 | } else if (fmd_nvl_class_match(hdl, nvl, | |
758 | ZFS_MAKE_RSRC(FM_RESOURCE_STATECHANGE))) { | |
759 | uint64_t state = 0; | |
760 | ||
761 | if (zcp != NULL && | |
762 | nvlist_lookup_uint64(nvl, | |
763 | FM_EREPORT_PAYLOAD_ZFS_VDEV_STATE, &state) == 0 && | |
764 | state == VDEV_STATE_HEALTHY) { | |
765 | fmd_hdl_debug(hdl, "closing case after a " | |
766 | "device statechange to healthy"); | |
767 | fmd_case_close(hdl, zcp->zc_case); | |
768 | } | |
769 | } | |
770 | zfs_stats.resource_drops.fmds_value.ui64++; | |
771 | return; | |
772 | } | |
773 | ||
774 | /* | |
775 | * Associate the ereport with this case. | |
776 | */ | |
777 | fmd_case_add_ereport(hdl, zcp->zc_case, ep); | |
778 | ||
779 | /* | |
780 | * Don't do anything else if this case is already solved. | |
781 | */ | |
782 | if (fmd_case_solved(hdl, zcp->zc_case)) | |
783 | return; | |
784 | ||
785 | fmd_hdl_debug(hdl, "error event '%s'", class); | |
786 | ||
787 | /* | |
788 | * Determine if we should solve the case and generate a fault. We solve | |
789 | * a case if: | |
790 | * | |
791 | * a. A pool failed to open (ereport.fs.zfs.pool) | |
792 | * b. A device failed to open (ereport.fs.zfs.pool) while a pool | |
793 | * was up and running. | |
794 | * | |
795 | * We may see a series of ereports associated with a pool open, all | |
796 | * chained together by the same ENA. If the pool open succeeds, then | |
797 | * we'll see no further ereports. To detect when a pool open has | |
798 | * succeeded, we associate a timer with the event. When it expires, we | |
799 | * close the case. | |
800 | */ | |
801 | if (fmd_nvl_class_match(hdl, nvl, | |
802 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_POOL))) { | |
803 | /* | |
804 | * Pool level fault. Before solving the case, go through and | |
805 | * close any open device cases that may be pending. | |
806 | */ | |
807 | for (dcp = uu_list_first(zfs_cases); dcp != NULL; | |
808 | dcp = uu_list_next(zfs_cases, dcp)) { | |
809 | if (dcp->zc_data.zc_pool_guid == | |
810 | zcp->zc_data.zc_pool_guid && | |
811 | dcp->zc_data.zc_vdev_guid != 0) | |
812 | fmd_case_close(hdl, dcp->zc_case); | |
813 | } | |
814 | ||
815 | zfs_case_solve(hdl, zcp, "fault.fs.zfs.pool", B_TRUE); | |
816 | } else if (fmd_nvl_class_match(hdl, nvl, | |
817 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_LOG_REPLAY))) { | |
818 | /* | |
819 | * Pool level fault for reading the intent logs. | |
820 | */ | |
821 | zfs_case_solve(hdl, zcp, "fault.fs.zfs.log_replay", B_TRUE); | |
822 | } else if (fmd_nvl_class_match(hdl, nvl, "ereport.fs.zfs.vdev.*")) { | |
823 | /* | |
824 | * Device fault. | |
825 | */ | |
826 | zfs_case_solve(hdl, zcp, "fault.fs.zfs.device", B_TRUE); | |
827 | } else if (fmd_nvl_class_match(hdl, nvl, | |
828 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_IO)) || | |
829 | fmd_nvl_class_match(hdl, nvl, | |
830 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_CHECKSUM)) || | |
831 | fmd_nvl_class_match(hdl, nvl, | |
832 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_IO_FAILURE)) || | |
833 | fmd_nvl_class_match(hdl, nvl, | |
834 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_PROBE_FAILURE))) { | |
835 | char *failmode = NULL; | |
836 | boolean_t checkremove = B_FALSE; | |
837 | ||
838 | /* | |
839 | * If this is a checksum or I/O error, then toss it into the | |
840 | * appropriate SERD engine and check to see if it has fired. | |
841 | * Ideally, we want to do something more sophisticated, | |
842 | * (persistent errors for a single data block, etc). For now, | |
843 | * a single SERD engine is sufficient. | |
844 | */ | |
845 | if (fmd_nvl_class_match(hdl, nvl, | |
846 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_IO))) { | |
847 | if (zcp->zc_data.zc_serd_io[0] == '\0') { | |
848 | zfs_serd_name(zcp->zc_data.zc_serd_io, | |
849 | pool_guid, vdev_guid, "io"); | |
850 | fmd_serd_create(hdl, zcp->zc_data.zc_serd_io, | |
851 | fmd_prop_get_int32(hdl, "io_N"), | |
852 | fmd_prop_get_int64(hdl, "io_T")); | |
853 | zfs_case_serialize(hdl, zcp); | |
854 | } | |
855 | if (fmd_serd_record(hdl, zcp->zc_data.zc_serd_io, ep)) | |
856 | checkremove = B_TRUE; | |
857 | } else if (fmd_nvl_class_match(hdl, nvl, | |
858 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_CHECKSUM))) { | |
859 | if (zcp->zc_data.zc_serd_checksum[0] == '\0') { | |
860 | zfs_serd_name(zcp->zc_data.zc_serd_checksum, | |
861 | pool_guid, vdev_guid, "checksum"); | |
862 | fmd_serd_create(hdl, | |
863 | zcp->zc_data.zc_serd_checksum, | |
864 | fmd_prop_get_int32(hdl, "checksum_N"), | |
865 | fmd_prop_get_int64(hdl, "checksum_T")); | |
866 | zfs_case_serialize(hdl, zcp); | |
867 | } | |
868 | if (fmd_serd_record(hdl, | |
869 | zcp->zc_data.zc_serd_checksum, ep)) { | |
870 | zfs_case_solve(hdl, zcp, | |
871 | "fault.fs.zfs.vdev.checksum", B_FALSE); | |
872 | } | |
873 | } else if (fmd_nvl_class_match(hdl, nvl, | |
874 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_IO_FAILURE)) && | |
875 | (nvlist_lookup_string(nvl, | |
876 | FM_EREPORT_PAYLOAD_ZFS_POOL_FAILMODE, &failmode) == 0) && | |
877 | failmode != NULL) { | |
878 | if (strncmp(failmode, FM_EREPORT_FAILMODE_CONTINUE, | |
879 | strlen(FM_EREPORT_FAILMODE_CONTINUE)) == 0) { | |
880 | zfs_case_solve(hdl, zcp, | |
881 | "fault.fs.zfs.io_failure_continue", | |
882 | B_FALSE); | |
883 | } else if (strncmp(failmode, FM_EREPORT_FAILMODE_WAIT, | |
884 | strlen(FM_EREPORT_FAILMODE_WAIT)) == 0) { | |
885 | zfs_case_solve(hdl, zcp, | |
886 | "fault.fs.zfs.io_failure_wait", B_FALSE); | |
887 | } | |
888 | } else if (fmd_nvl_class_match(hdl, nvl, | |
889 | ZFS_MAKE_EREPORT(FM_EREPORT_ZFS_PROBE_FAILURE))) { | |
890 | #ifndef __linux__ | |
891 | /* This causes an unexpected fault diagnosis on linux */ | |
892 | checkremove = B_TRUE; | |
893 | #endif | |
894 | } | |
895 | ||
896 | /* | |
897 | * Because I/O errors may be due to device removal, we postpone | |
898 | * any diagnosis until we're sure that we aren't about to | |
899 | * receive a 'resource.fs.zfs.removed' event. | |
900 | */ | |
901 | if (checkremove) { | |
902 | if (zcp->zc_data.zc_has_remove_timer) | |
903 | fmd_timer_remove(hdl, zcp->zc_remove_timer); | |
904 | zcp->zc_remove_timer = fmd_timer_install(hdl, zcp, NULL, | |
905 | zfs_remove_timeout); | |
906 | if (!zcp->zc_data.zc_has_remove_timer) { | |
907 | zcp->zc_data.zc_has_remove_timer = 1; | |
908 | zfs_case_serialize(hdl, zcp); | |
909 | } | |
910 | } | |
911 | } | |
912 | } | |
913 | ||
914 | /* | |
915 | * The timeout is fired when we diagnosed an I/O error, and it was not due to | |
916 | * device removal (which would cause the timeout to be cancelled). | |
917 | */ | |
918 | /* ARGSUSED */ | |
919 | static void | |
920 | zfs_fm_timeout(fmd_hdl_t *hdl, id_t id, void *data) | |
921 | { | |
922 | zfs_case_t *zcp = data; | |
923 | ||
924 | if (id == zcp->zc_remove_timer) | |
925 | zfs_case_solve(hdl, zcp, "fault.fs.zfs.vdev.io", B_FALSE); | |
926 | } | |
927 | ||
928 | /* | |
929 | * The specified case has been closed and any case-specific | |
930 | * data structures should be deallocated. | |
931 | */ | |
932 | static void | |
933 | zfs_fm_close(fmd_hdl_t *hdl, fmd_case_t *cs) | |
934 | { | |
935 | zfs_case_t *zcp = fmd_case_getspecific(hdl, cs); | |
936 | ||
937 | if (zcp->zc_data.zc_serd_checksum[0] != '\0') | |
938 | fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_checksum); | |
939 | if (zcp->zc_data.zc_serd_io[0] != '\0') | |
940 | fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_io); | |
941 | if (zcp->zc_data.zc_has_remove_timer) | |
942 | fmd_timer_remove(hdl, zcp->zc_remove_timer); | |
943 | ||
944 | uu_list_remove(zfs_cases, zcp); | |
945 | uu_list_node_fini(zcp, &zcp->zc_node, zfs_case_pool); | |
946 | fmd_hdl_free(hdl, zcp, sizeof (zfs_case_t)); | |
947 | } | |
948 | ||
949 | /* | |
950 | * We use the fmd gc entry point to look for old cases that no longer apply. | |
951 | * This allows us to keep our set of case data small in a long running system. | |
952 | */ | |
953 | static void | |
954 | zfs_fm_gc(fmd_hdl_t *hdl) | |
955 | { | |
956 | zfs_purge_cases(hdl); | |
957 | } | |
958 | ||
959 | static const fmd_hdl_ops_t fmd_ops = { | |
960 | zfs_fm_recv, /* fmdo_recv */ | |
961 | zfs_fm_timeout, /* fmdo_timeout */ | |
962 | zfs_fm_close, /* fmdo_close */ | |
963 | NULL, /* fmdo_stats */ | |
964 | zfs_fm_gc, /* fmdo_gc */ | |
965 | }; | |
966 | ||
967 | static const fmd_prop_t fmd_props[] = { | |
968 | { "checksum_N", FMD_TYPE_UINT32, "10" }, | |
969 | { "checksum_T", FMD_TYPE_TIME, "10min" }, | |
970 | { "io_N", FMD_TYPE_UINT32, "10" }, | |
971 | { "io_T", FMD_TYPE_TIME, "10min" }, | |
972 | { "remove_timeout", FMD_TYPE_TIME, "15sec" }, | |
973 | { NULL, 0, NULL } | |
974 | }; | |
975 | ||
976 | static const fmd_hdl_info_t fmd_info = { | |
977 | "ZFS Diagnosis Engine", "1.0", &fmd_ops, fmd_props | |
978 | }; | |
979 | ||
980 | void | |
981 | _zfs_diagnosis_init(fmd_hdl_t *hdl) | |
982 | { | |
983 | libzfs_handle_t *zhdl; | |
984 | ||
985 | if ((zhdl = __libzfs_init()) == NULL) | |
986 | return; | |
987 | ||
988 | if ((zfs_case_pool = uu_list_pool_create("zfs_case_pool", | |
989 | sizeof (zfs_case_t), offsetof(zfs_case_t, zc_node), | |
990 | NULL, UU_LIST_POOL_DEBUG)) == NULL) { | |
991 | __libzfs_fini(zhdl); | |
992 | return; | |
993 | } | |
994 | ||
995 | if ((zfs_cases = uu_list_create(zfs_case_pool, NULL, | |
996 | UU_LIST_DEBUG)) == NULL) { | |
997 | uu_list_pool_destroy(zfs_case_pool); | |
998 | __libzfs_fini(zhdl); | |
999 | return; | |
1000 | } | |
1001 | ||
1002 | if (fmd_hdl_register(hdl, FMD_API_VERSION, &fmd_info) != 0) { | |
1003 | uu_list_destroy(zfs_cases); | |
1004 | uu_list_pool_destroy(zfs_case_pool); | |
1005 | __libzfs_fini(zhdl); | |
1006 | return; | |
1007 | } | |
1008 | ||
1009 | fmd_hdl_setspecific(hdl, zhdl); | |
1010 | ||
1011 | (void) fmd_stat_create(hdl, FMD_STAT_NOALLOC, sizeof (zfs_stats) / | |
1012 | sizeof (fmd_stat_t), (fmd_stat_t *)&zfs_stats); | |
1013 | ||
1014 | zfs_remove_timeout = fmd_prop_get_int64(hdl, "remove_timeout"); | |
1015 | } | |
1016 | ||
1017 | void | |
1018 | _zfs_diagnosis_fini(fmd_hdl_t *hdl) | |
1019 | { | |
1020 | zfs_case_t *zcp; | |
1021 | uu_list_walk_t *walk; | |
1022 | libzfs_handle_t *zhdl; | |
1023 | ||
1024 | /* | |
1025 | * Remove all active cases. | |
1026 | */ | |
1027 | walk = uu_list_walk_start(zfs_cases, UU_WALK_ROBUST); | |
1028 | while ((zcp = uu_list_walk_next(walk)) != NULL) { | |
1029 | fmd_hdl_debug(hdl, "removing case ena %llu", | |
1030 | (long long unsigned)zcp->zc_data.zc_ena); | |
1031 | uu_list_remove(zfs_cases, zcp); | |
1032 | uu_list_node_fini(zcp, &zcp->zc_node, zfs_case_pool); | |
1033 | fmd_hdl_free(hdl, zcp, sizeof (zfs_case_t)); | |
1034 | } | |
1035 | uu_list_walk_end(walk); | |
1036 | ||
1037 | uu_list_destroy(zfs_cases); | |
1038 | uu_list_pool_destroy(zfs_case_pool); | |
1039 | ||
1040 | zhdl = fmd_hdl_getspecific(hdl); | |
1041 | __libzfs_fini(zhdl); | |
1042 | } |