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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
26ef0cc7 | 23 | * Copyright (c) 2012, 2015 by Delphix. All rights reserved. |
0241e491 | 24 | * Copyright (c) 2017, Intel Corporation. |
34dc7c2f BB |
25 | */ |
26 | ||
34dc7c2f BB |
27 | /* |
28 | * ZFS Fault Injector | |
29 | * | |
30 | * This userland component takes a set of options and uses libzpool to translate | |
31 | * from a user-visible object type and name to an internal representation. | |
32 | * There are two basic types of faults: device faults and data faults. | |
33 | * | |
34 | * | |
35 | * DEVICE FAULTS | |
36 | * | |
37 | * Errors can be injected into a particular vdev using the '-d' option. This | |
38 | * option takes a path or vdev GUID to uniquely identify the device within a | |
d977122d DB |
39 | * pool. There are four types of errors that can be injected, IO, ENXIO, |
40 | * ECHILD, and EILSEQ. These can be controlled through the '-e' option and the | |
41 | * default is ENXIO. For EIO failures, any attempt to read data from the device | |
42 | * will return EIO, but a subsequent attempt to reopen the device will succeed. | |
43 | * For ENXIO failures, any attempt to read from the device will return EIO, but | |
44 | * any attempt to reopen the device will also return ENXIO. The EILSEQ failures | |
45 | * only apply to read operations (-T read) and will flip a bit after the device | |
46 | * has read the original data. | |
47 | * | |
b128c09f | 48 | * For label faults, the -L option must be specified. This allows faults |
428870ff BB |
49 | * to be injected into either the nvlist, uberblock, pad1, or pad2 region |
50 | * of all the labels for the specified device. | |
34dc7c2f BB |
51 | * |
52 | * This form of the command looks like: | |
53 | * | |
428870ff | 54 | * zinject -d device [-e errno] [-L <uber | nvlist | pad1 | pad2>] pool |
34dc7c2f BB |
55 | * |
56 | * | |
57 | * DATA FAULTS | |
58 | * | |
59 | * We begin with a tuple of the form: | |
60 | * | |
61 | * <type,level,range,object> | |
62 | * | |
63 | * type A string describing the type of data to target. Each type | |
64 | * implicitly describes how to interpret 'object'. Currently, | |
65 | * the following values are supported: | |
66 | * | |
67 | * data User data for a file | |
68 | * dnode Dnode for a file or directory | |
69 | * | |
70 | * The following MOS objects are special. Instead of injecting | |
71 | * errors on a particular object or blkid, we inject errors across | |
72 | * all objects of the given type. | |
73 | * | |
74 | * mos Any data in the MOS | |
75 | * mosdir object directory | |
76 | * config pool configuration | |
428870ff | 77 | * bpobj blkptr list |
34dc7c2f BB |
78 | * spacemap spacemap |
79 | * metaslab metaslab | |
80 | * errlog persistent error log | |
81 | * | |
82 | * level Object level. Defaults to '0', not applicable to all types. If | |
83 | * a range is given, this corresponds to the indirect block | |
84 | * corresponding to the specific range. | |
85 | * | |
86 | * range A numerical range [start,end) within the object. Defaults to | |
87 | * the full size of the file. | |
88 | * | |
89 | * object A string describing the logical location of the object. For | |
90 | * files and directories (currently the only supported types), | |
91 | * this is the path of the object on disk. | |
92 | * | |
93 | * This is translated, via libzpool, into the following internal representation: | |
94 | * | |
95 | * <type,objset,object,level,range> | |
96 | * | |
97 | * These types should be self-explanatory. This tuple is then passed to the | |
98 | * kernel via a special ioctl() to initiate fault injection for the given | |
99 | * object. Note that 'type' is not strictly necessary for fault injection, but | |
100 | * is used when translating existing faults into a human-readable string. | |
101 | * | |
102 | * | |
103 | * The command itself takes one of the forms: | |
104 | * | |
105 | * zinject | |
106 | * zinject <-a | -u pool> | |
107 | * zinject -c <id|all> | |
108 | * zinject [-q] <-t type> [-f freq] [-u] [-a] [-m] [-e errno] [-l level] | |
109 | * [-r range] <object> | |
110 | * zinject [-f freq] [-a] [-m] [-u] -b objset:object:level:start:end pool | |
111 | * | |
112 | * With no arguments, the command prints all currently registered injection | |
113 | * handlers, with their numeric identifiers. | |
114 | * | |
115 | * The '-c' option will clear the given handler, or all handlers if 'all' is | |
116 | * specified. | |
117 | * | |
118 | * The '-e' option takes a string describing the errno to simulate. This must | |
c3bd3fb4 TC |
119 | * be one of 'io', 'checksum', 'decompress', or 'decrypt'. In most cases this |
120 | * will result in the same behavior, but RAID-Z will produce a different set of | |
121 | * ereports for this situation. | |
34dc7c2f BB |
122 | * |
123 | * The '-a', '-u', and '-m' flags toggle internal flush behavior. If '-a' is | |
124 | * specified, then the ARC cache is flushed appropriately. If '-u' is | |
125 | * specified, then the underlying SPA is unloaded. Either of these flags can be | |
126 | * specified independently of any other handlers. The '-m' flag automatically | |
127 | * does an unmount and remount of the underlying dataset to aid in flushing the | |
128 | * cache. | |
129 | * | |
130 | * The '-f' flag controls the frequency of errors injected, expressed as a | |
0241e491 | 131 | * real number percentage between 0.0001 and 100. The default is 100. |
34dc7c2f BB |
132 | * |
133 | * The this form is responsible for actually injecting the handler into the | |
134 | * framework. It takes the arguments described above, translates them to the | |
135 | * internal tuple using libzpool, and then issues an ioctl() to register the | |
136 | * handler. | |
137 | * | |
138 | * The final form can target a specific bookmark, regardless of whether a | |
139 | * human-readable interface has been designed. It allows developers to specify | |
140 | * a particular block by number. | |
141 | */ | |
142 | ||
143 | #include <errno.h> | |
144 | #include <fcntl.h> | |
145 | #include <stdio.h> | |
146 | #include <stdlib.h> | |
147 | #include <strings.h> | |
148 | #include <unistd.h> | |
149 | ||
150 | #include <sys/fs/zfs.h> | |
151 | #include <sys/mount.h> | |
152 | ||
153 | #include <libzfs.h> | |
154 | ||
155 | #undef verify /* both libzfs.h and zfs_context.h want to define this */ | |
156 | ||
157 | #include "zinject.h" | |
158 | ||
159 | libzfs_handle_t *g_zfs; | |
160 | int zfs_fd; | |
161 | ||
162 | #define ECKSUM EBADE | |
163 | ||
164 | static const char *errtable[TYPE_INVAL] = { | |
165 | "data", | |
166 | "dnode", | |
167 | "mos", | |
168 | "mosdir", | |
169 | "metaslab", | |
170 | "config", | |
428870ff | 171 | "bpobj", |
34dc7c2f | 172 | "spacemap", |
b128c09f BB |
173 | "errlog", |
174 | "uber", | |
428870ff BB |
175 | "nvlist", |
176 | "pad1", | |
177 | "pad2" | |
34dc7c2f BB |
178 | }; |
179 | ||
180 | static err_type_t | |
181 | name_to_type(const char *arg) | |
182 | { | |
183 | int i; | |
184 | for (i = 0; i < TYPE_INVAL; i++) | |
185 | if (strcmp(errtable[i], arg) == 0) | |
186 | return (i); | |
187 | ||
188 | return (TYPE_INVAL); | |
189 | } | |
190 | ||
191 | static const char * | |
192 | type_to_name(uint64_t type) | |
193 | { | |
194 | switch (type) { | |
195 | case DMU_OT_OBJECT_DIRECTORY: | |
196 | return ("mosdir"); | |
197 | case DMU_OT_OBJECT_ARRAY: | |
198 | return ("metaslab"); | |
199 | case DMU_OT_PACKED_NVLIST: | |
200 | return ("config"); | |
428870ff BB |
201 | case DMU_OT_BPOBJ: |
202 | return ("bpobj"); | |
34dc7c2f BB |
203 | case DMU_OT_SPACE_MAP: |
204 | return ("spacemap"); | |
205 | case DMU_OT_ERROR_LOG: | |
206 | return ("errlog"); | |
207 | default: | |
208 | return ("-"); | |
209 | } | |
210 | } | |
211 | ||
212 | ||
213 | /* | |
214 | * Print usage message. | |
215 | */ | |
216 | void | |
217 | usage(void) | |
218 | { | |
219 | (void) printf( | |
220 | "usage:\n" | |
221 | "\n" | |
222 | "\tzinject\n" | |
223 | "\n" | |
224 | "\t\tList all active injection records.\n" | |
225 | "\n" | |
226 | "\tzinject -c <id|all>\n" | |
227 | "\n" | |
228 | "\t\tClear the particular record (if given a numeric ID), or\n" | |
2627e752 | 229 | "\t\tall records if 'all' is specified.\n" |
34dc7c2f | 230 | "\n" |
428870ff BB |
231 | "\tzinject -p <function name> pool\n" |
232 | "\t\tInject a panic fault at the specified function. Only \n" | |
233 | "\t\tfunctions which call spa_vdev_config_exit(), or \n" | |
234 | "\t\tspa_vdev_exit() will trigger a panic.\n" | |
235 | "\n" | |
236 | "\tzinject -d device [-e errno] [-L <nvlist|uber|pad1|pad2>] [-F]\n" | |
d977122d | 237 | "\t\t[-T <read|write|free|claim|all>] [-f frequency] pool\n\n" |
b128c09f | 238 | "\t\tInject a fault into a particular device or the device's\n" |
428870ff BB |
239 | "\t\tlabel. Label injection can either be 'nvlist', 'uber',\n " |
240 | "\t\t'pad1', or 'pad2'.\n" | |
d977122d DB |
241 | "\t\t'errno' can be 'nxio' (the default), 'io', 'dtl', or\n" |
242 | "\t\t'corrupt' (bit flip).\n" | |
0241e491 DB |
243 | "\t\t'frequency' is a value between 0.0001 and 100.0 that limits\n" |
244 | "\t\tdevice error injection to a percentage of the IOs.\n" | |
34dc7c2f | 245 | "\n" |
cc92e9d0 GW |
246 | "\tzinject -d device -A <degrade|fault> -D <delay secs> pool\n" |
247 | "\t\tPerform a specific action on a particular device.\n" | |
428870ff | 248 | "\n" |
26ef0cc7 TH |
249 | "\tzinject -d device -D latency:lanes pool\n" |
250 | "\n" | |
251 | "\t\tAdd an artificial delay to IO requests on a particular\n" | |
252 | "\t\tdevice, such that the requests take a minimum of 'latency'\n" | |
253 | "\t\tmilliseconds to complete. Each delay has an associated\n" | |
254 | "\t\tnumber of 'lanes' which defines the number of concurrent\n" | |
255 | "\t\tIO requests that can be processed.\n" | |
256 | "\n" | |
257 | "\t\tFor example, with a single lane delay of 10 ms (-D 10:1),\n" | |
258 | "\t\tthe device will only be able to service a single IO request\n" | |
259 | "\t\tat a time with each request taking 10 ms to complete. So,\n" | |
260 | "\t\tif only a single request is submitted every 10 ms, the\n" | |
261 | "\t\taverage latency will be 10 ms; but if more than one request\n" | |
262 | "\t\tis submitted every 10 ms, the average latency will be more\n" | |
263 | "\t\tthan 10 ms.\n" | |
264 | "\n" | |
265 | "\t\tSimilarly, if a delay of 10 ms is specified to have two\n" | |
266 | "\t\tlanes (-D 10:2), then the device will be able to service\n" | |
267 | "\t\ttwo requests at a time, each with a minimum latency of\n" | |
268 | "\t\t10 ms. So, if two requests are submitted every 10 ms, then\n" | |
269 | "\t\tthe average latency will be 10 ms; but if more than two\n" | |
270 | "\t\trequests are submitted every 10 ms, the average latency\n" | |
271 | "\t\twill be more than 10 ms.\n" | |
272 | "\n" | |
273 | "\t\tAlso note, these delays are additive. So two invocations\n" | |
274 | "\t\tof '-D 10:1', is roughly equivalent to a single invocation\n" | |
275 | "\t\tof '-D 10:2'. This also means, one can specify multiple\n" | |
276 | "\t\tlanes with differing target latencies. For example, an\n" | |
277 | "\t\tinvocation of '-D 10:1' followed by '-D 25:2' will\n" | |
278 | "\t\tcreate 3 lanes on the device; one lane with a latency\n" | |
279 | "\t\tof 10 ms and two lanes with a 25 ms latency.\n" | |
280 | "\n" | |
428870ff BB |
281 | "\tzinject -I [-s <seconds> | -g <txgs>] pool\n" |
282 | "\t\tCause the pool to stop writing blocks yet not\n" | |
283 | "\t\treport errors for a duration. Simulates buggy hardware\n" | |
284 | "\t\tthat fails to honor cache flush requests.\n" | |
285 | "\t\tDefault duration is 30 seconds. The machine is panicked\n" | |
286 | "\t\tat the end of the duration.\n" | |
287 | "\n" | |
34dc7c2f BB |
288 | "\tzinject -b objset:object:level:blkid pool\n" |
289 | "\n" | |
290 | "\t\tInject an error into pool 'pool' with the numeric bookmark\n" | |
291 | "\t\tspecified by the remaining tuple. Each number is in\n" | |
4e33ba4c | 292 | "\t\thexadecimal, and only one block can be specified.\n" |
34dc7c2f BB |
293 | "\n" |
294 | "\tzinject [-q] <-t type> [-e errno] [-l level] [-r range]\n" | |
295 | "\t [-a] [-m] [-u] [-f freq] <object>\n" | |
296 | "\n" | |
297 | "\t\tInject an error into the object specified by the '-t' option\n" | |
298 | "\t\tand the object descriptor. The 'object' parameter is\n" | |
2627e752 | 299 | "\t\tinterpreted depending on the '-t' option.\n" |
34dc7c2f BB |
300 | "\n" |
301 | "\t\t-q\tQuiet mode. Only print out the handler number added.\n" | |
be9a5c35 | 302 | "\t\t-e\tInject a specific error. Must be one of 'io',\n" |
c3bd3fb4 | 303 | "\t\t\t'checksum', 'decompress', or decrypt. Default is 'io'.\n" |
34dc7c2f BB |
304 | "\t\t-l\tInject error at a particular block level. Default is " |
305 | "0.\n" | |
306 | "\t\t-m\tAutomatically remount underlying filesystem.\n" | |
307 | "\t\t-r\tInject error over a particular logical range of an\n" | |
308 | "\t\t\tobject. Will be translated to the appropriate blkid\n" | |
309 | "\t\t\trange according to the object's properties.\n" | |
310 | "\t\t-a\tFlush the ARC cache. Can be specified without any\n" | |
311 | "\t\t\tassociated object.\n" | |
312 | "\t\t-u\tUnload the associated pool. Can be specified with only\n" | |
313 | "\t\t\ta pool object.\n" | |
314 | "\t\t-f\tOnly inject errors a fraction of the time. Expressed as\n" | |
0241e491 | 315 | "\t\t\ta percentage between 0.0001 and 100.\n" |
34dc7c2f BB |
316 | "\n" |
317 | "\t-t data\t\tInject an error into the plain file contents of a\n" | |
318 | "\t\t\tfile. The object must be specified as a complete path\n" | |
319 | "\t\t\tto a file on a ZFS filesystem.\n" | |
320 | "\n" | |
321 | "\t-t dnode\tInject an error into the metadnode in the block\n" | |
322 | "\t\t\tcorresponding to the dnode for a file or directory. The\n" | |
323 | "\t\t\t'-r' option is incompatible with this mode. The object\n" | |
324 | "\t\t\tis specified as a complete path to a file or directory\n" | |
325 | "\t\t\ton a ZFS filesystem.\n" | |
326 | "\n" | |
327 | "\t-t <mos>\tInject errors into the MOS for objects of the given\n" | |
428870ff | 328 | "\t\t\ttype. Valid types are: mos, mosdir, config, bpobj,\n" |
34dc7c2f BB |
329 | "\t\t\tspacemap, metaslab, errlog. The only valid <object> is\n" |
330 | "\t\t\tthe poolname.\n"); | |
331 | } | |
332 | ||
333 | static int | |
334 | iter_handlers(int (*func)(int, const char *, zinject_record_t *, void *), | |
335 | void *data) | |
336 | { | |
d3773fda | 337 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f BB |
338 | int ret; |
339 | ||
34dc7c2f BB |
340 | while (ioctl(zfs_fd, ZFS_IOC_INJECT_LIST_NEXT, &zc) == 0) |
341 | if ((ret = func((int)zc.zc_guid, zc.zc_name, | |
342 | &zc.zc_inject_record, data)) != 0) | |
343 | return (ret); | |
344 | ||
428870ff BB |
345 | if (errno != ENOENT) { |
346 | (void) fprintf(stderr, "Unable to list handlers: %s\n", | |
347 | strerror(errno)); | |
348 | return (-1); | |
349 | } | |
350 | ||
34dc7c2f BB |
351 | return (0); |
352 | } | |
353 | ||
354 | static int | |
355 | print_data_handler(int id, const char *pool, zinject_record_t *record, | |
356 | void *data) | |
357 | { | |
358 | int *count = data; | |
359 | ||
428870ff | 360 | if (record->zi_guid != 0 || record->zi_func[0] != '\0') |
34dc7c2f BB |
361 | return (0); |
362 | ||
363 | if (*count == 0) { | |
364 | (void) printf("%3s %-15s %-6s %-6s %-8s %3s %-15s\n", | |
365 | "ID", "POOL", "OBJSET", "OBJECT", "TYPE", "LVL", "RANGE"); | |
366 | (void) printf("--- --------------- ------ " | |
367 | "------ -------- --- ---------------\n"); | |
368 | } | |
369 | ||
370 | *count += 1; | |
371 | ||
372 | (void) printf("%3d %-15s %-6llu %-6llu %-8s %3d ", id, pool, | |
373 | (u_longlong_t)record->zi_objset, (u_longlong_t)record->zi_object, | |
374 | type_to_name(record->zi_type), record->zi_level); | |
375 | ||
376 | if (record->zi_start == 0 && | |
377 | record->zi_end == -1ULL) | |
378 | (void) printf("all\n"); | |
379 | else | |
380 | (void) printf("[%llu, %llu]\n", (u_longlong_t)record->zi_start, | |
381 | (u_longlong_t)record->zi_end); | |
382 | ||
383 | return (0); | |
384 | } | |
385 | ||
386 | static int | |
387 | print_device_handler(int id, const char *pool, zinject_record_t *record, | |
388 | void *data) | |
389 | { | |
390 | int *count = data; | |
391 | ||
428870ff | 392 | if (record->zi_guid == 0 || record->zi_func[0] != '\0') |
34dc7c2f BB |
393 | return (0); |
394 | ||
26ef0cc7 TH |
395 | if (record->zi_cmd == ZINJECT_DELAY_IO) |
396 | return (0); | |
397 | ||
34dc7c2f BB |
398 | if (*count == 0) { |
399 | (void) printf("%3s %-15s %s\n", "ID", "POOL", "GUID"); | |
400 | (void) printf("--- --------------- ----------------\n"); | |
401 | } | |
402 | ||
403 | *count += 1; | |
404 | ||
405 | (void) printf("%3d %-15s %llx\n", id, pool, | |
406 | (u_longlong_t)record->zi_guid); | |
407 | ||
408 | return (0); | |
409 | } | |
410 | ||
26ef0cc7 TH |
411 | static int |
412 | print_delay_handler(int id, const char *pool, zinject_record_t *record, | |
413 | void *data) | |
414 | { | |
415 | int *count = data; | |
416 | ||
417 | if (record->zi_guid == 0 || record->zi_func[0] != '\0') | |
418 | return (0); | |
419 | ||
420 | if (record->zi_cmd != ZINJECT_DELAY_IO) | |
421 | return (0); | |
422 | ||
423 | if (*count == 0) { | |
424 | (void) printf("%3s %-15s %-15s %-15s %s\n", | |
425 | "ID", "POOL", "DELAY (ms)", "LANES", "GUID"); | |
426 | (void) printf("--- --------------- --------------- " | |
427 | "--------------- ----------------\n"); | |
428 | } | |
429 | ||
430 | *count += 1; | |
431 | ||
432 | (void) printf("%3d %-15s %-15llu %-15llu %llx\n", id, pool, | |
433 | (u_longlong_t)NSEC2MSEC(record->zi_timer), | |
434 | (u_longlong_t)record->zi_nlanes, | |
435 | (u_longlong_t)record->zi_guid); | |
436 | ||
437 | return (0); | |
438 | } | |
439 | ||
428870ff BB |
440 | static int |
441 | print_panic_handler(int id, const char *pool, zinject_record_t *record, | |
442 | void *data) | |
443 | { | |
444 | int *count = data; | |
445 | ||
446 | if (record->zi_func[0] == '\0') | |
447 | return (0); | |
448 | ||
449 | if (*count == 0) { | |
450 | (void) printf("%3s %-15s %s\n", "ID", "POOL", "FUNCTION"); | |
451 | (void) printf("--- --------------- ----------------\n"); | |
452 | } | |
453 | ||
454 | *count += 1; | |
455 | ||
456 | (void) printf("%3d %-15s %s\n", id, pool, record->zi_func); | |
457 | ||
458 | return (0); | |
459 | } | |
460 | ||
34dc7c2f BB |
461 | /* |
462 | * Print all registered error handlers. Returns the number of handlers | |
463 | * registered. | |
464 | */ | |
465 | static int | |
466 | print_all_handlers(void) | |
467 | { | |
572e2857 | 468 | int count = 0, total = 0; |
34dc7c2f BB |
469 | |
470 | (void) iter_handlers(print_device_handler, &count); | |
572e2857 BB |
471 | if (count > 0) { |
472 | total += count; | |
473 | (void) printf("\n"); | |
474 | count = 0; | |
475 | } | |
476 | ||
26ef0cc7 TH |
477 | (void) iter_handlers(print_delay_handler, &count); |
478 | if (count > 0) { | |
479 | total += count; | |
480 | (void) printf("\n"); | |
481 | count = 0; | |
482 | } | |
483 | ||
34dc7c2f | 484 | (void) iter_handlers(print_data_handler, &count); |
572e2857 BB |
485 | if (count > 0) { |
486 | total += count; | |
487 | (void) printf("\n"); | |
488 | count = 0; | |
489 | } | |
490 | ||
428870ff | 491 | (void) iter_handlers(print_panic_handler, &count); |
34dc7c2f | 492 | |
572e2857 | 493 | return (count + total); |
34dc7c2f BB |
494 | } |
495 | ||
496 | /* ARGSUSED */ | |
497 | static int | |
498 | cancel_one_handler(int id, const char *pool, zinject_record_t *record, | |
499 | void *data) | |
500 | { | |
d3773fda | 501 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f BB |
502 | |
503 | zc.zc_guid = (uint64_t)id; | |
504 | ||
505 | if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) { | |
506 | (void) fprintf(stderr, "failed to remove handler %d: %s\n", | |
507 | id, strerror(errno)); | |
508 | return (1); | |
509 | } | |
510 | ||
511 | return (0); | |
512 | } | |
513 | ||
514 | /* | |
515 | * Remove all fault injection handlers. | |
516 | */ | |
517 | static int | |
518 | cancel_all_handlers(void) | |
519 | { | |
520 | int ret = iter_handlers(cancel_one_handler, NULL); | |
521 | ||
428870ff BB |
522 | if (ret == 0) |
523 | (void) printf("removed all registered handlers\n"); | |
34dc7c2f BB |
524 | |
525 | return (ret); | |
526 | } | |
527 | ||
528 | /* | |
529 | * Remove a specific fault injection handler. | |
530 | */ | |
531 | static int | |
532 | cancel_handler(int id) | |
533 | { | |
d3773fda | 534 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f BB |
535 | |
536 | zc.zc_guid = (uint64_t)id; | |
537 | ||
538 | if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) { | |
539 | (void) fprintf(stderr, "failed to remove handler %d: %s\n", | |
540 | id, strerror(errno)); | |
541 | return (1); | |
542 | } | |
543 | ||
544 | (void) printf("removed handler %d\n", id); | |
545 | ||
546 | return (0); | |
547 | } | |
548 | ||
549 | /* | |
550 | * Register a new fault injection handler. | |
551 | */ | |
552 | static int | |
553 | register_handler(const char *pool, int flags, zinject_record_t *record, | |
554 | int quiet) | |
555 | { | |
d3773fda | 556 | zfs_cmd_t zc = {"\0"}; |
34dc7c2f | 557 | |
0b78aeae | 558 | (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name)); |
34dc7c2f BB |
559 | zc.zc_inject_record = *record; |
560 | zc.zc_guid = flags; | |
561 | ||
562 | if (ioctl(zfs_fd, ZFS_IOC_INJECT_FAULT, &zc) != 0) { | |
563 | (void) fprintf(stderr, "failed to add handler: %s\n", | |
e89f1295 | 564 | errno == EDOM ? "block level exceeds max level of object" : |
34dc7c2f BB |
565 | strerror(errno)); |
566 | return (1); | |
567 | } | |
568 | ||
569 | if (flags & ZINJECT_NULL) | |
570 | return (0); | |
571 | ||
572 | if (quiet) { | |
573 | (void) printf("%llu\n", (u_longlong_t)zc.zc_guid); | |
574 | } else { | |
575 | (void) printf("Added handler %llu with the following " | |
576 | "properties:\n", (u_longlong_t)zc.zc_guid); | |
577 | (void) printf(" pool: %s\n", pool); | |
578 | if (record->zi_guid) { | |
579 | (void) printf(" vdev: %llx\n", | |
580 | (u_longlong_t)record->zi_guid); | |
428870ff BB |
581 | } else if (record->zi_func[0] != '\0') { |
582 | (void) printf(" panic function: %s\n", | |
583 | record->zi_func); | |
584 | } else if (record->zi_duration > 0) { | |
585 | (void) printf(" time: %lld seconds\n", | |
586 | (u_longlong_t)record->zi_duration); | |
587 | } else if (record->zi_duration < 0) { | |
588 | (void) printf(" txgs: %lld \n", | |
589 | (u_longlong_t)-record->zi_duration); | |
34dc7c2f BB |
590 | } else { |
591 | (void) printf("objset: %llu\n", | |
592 | (u_longlong_t)record->zi_objset); | |
593 | (void) printf("object: %llu\n", | |
594 | (u_longlong_t)record->zi_object); | |
595 | (void) printf(" type: %llu\n", | |
596 | (u_longlong_t)record->zi_type); | |
597 | (void) printf(" level: %d\n", record->zi_level); | |
598 | if (record->zi_start == 0 && | |
599 | record->zi_end == -1ULL) | |
600 | (void) printf(" range: all\n"); | |
601 | else | |
602 | (void) printf(" range: [%llu, %llu)\n", | |
603 | (u_longlong_t)record->zi_start, | |
604 | (u_longlong_t)record->zi_end); | |
605 | } | |
606 | } | |
607 | ||
608 | return (0); | |
609 | } | |
610 | ||
428870ff BB |
611 | int |
612 | perform_action(const char *pool, zinject_record_t *record, int cmd) | |
613 | { | |
d3773fda | 614 | zfs_cmd_t zc = {"\0"}; |
428870ff BB |
615 | |
616 | ASSERT(cmd == VDEV_STATE_DEGRADED || cmd == VDEV_STATE_FAULTED); | |
617 | (void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name)); | |
618 | zc.zc_guid = record->zi_guid; | |
619 | zc.zc_cookie = cmd; | |
620 | ||
621 | if (ioctl(zfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0) | |
622 | return (0); | |
623 | ||
624 | return (1); | |
625 | } | |
626 | ||
26ef0cc7 TH |
627 | static int |
628 | parse_delay(char *str, uint64_t *delay, uint64_t *nlanes) | |
629 | { | |
630 | unsigned long scan_delay; | |
631 | unsigned long scan_nlanes; | |
632 | ||
633 | if (sscanf(str, "%lu:%lu", &scan_delay, &scan_nlanes) != 2) | |
634 | return (1); | |
635 | ||
636 | /* | |
637 | * We explicitly disallow a delay of zero here, because we key | |
638 | * off this value being non-zero in translate_device(), to | |
639 | * determine if the fault is a ZINJECT_DELAY_IO fault or not. | |
640 | */ | |
641 | if (scan_delay == 0) | |
642 | return (1); | |
643 | ||
644 | /* | |
645 | * The units for the CLI delay parameter is milliseconds, but | |
646 | * the data passed to the kernel is interpreted as nanoseconds. | |
647 | * Thus we scale the milliseconds to nanoseconds here, and this | |
648 | * nanosecond value is used to pass the delay to the kernel. | |
649 | */ | |
650 | *delay = MSEC2NSEC(scan_delay); | |
651 | *nlanes = scan_nlanes; | |
652 | ||
653 | return (0); | |
654 | } | |
655 | ||
0241e491 DB |
656 | static int |
657 | parse_frequency(const char *str, uint32_t *percent) | |
658 | { | |
659 | double val; | |
660 | char *post; | |
661 | ||
662 | val = strtod(str, &post); | |
663 | if (post == NULL || *post != '\0') | |
664 | return (EINVAL); | |
665 | ||
666 | /* valid range is [0.0001, 100.0] */ | |
667 | val /= 100.0f; | |
668 | if (val < 0.000001f || val > 1.0f) | |
669 | return (ERANGE); | |
670 | ||
671 | /* convert to an integer for use by kernel */ | |
672 | *percent = ((uint32_t)(val * ZI_PERCENTAGE_MAX)); | |
673 | ||
674 | return (0); | |
675 | } | |
676 | ||
34dc7c2f BB |
677 | int |
678 | main(int argc, char **argv) | |
679 | { | |
680 | int c; | |
681 | char *range = NULL; | |
682 | char *cancel = NULL; | |
683 | char *end; | |
684 | char *raw = NULL; | |
685 | char *device = NULL; | |
686 | int level = 0; | |
687 | int quiet = 0; | |
688 | int error = 0; | |
689 | int domount = 0; | |
428870ff BB |
690 | int io_type = ZIO_TYPES; |
691 | int action = VDEV_STATE_UNKNOWN; | |
34dc7c2f | 692 | err_type_t type = TYPE_INVAL; |
b128c09f | 693 | err_type_t label = TYPE_INVAL; |
34dc7c2f | 694 | zinject_record_t record = { 0 }; |
a64f903b GN |
695 | char pool[MAXNAMELEN] = ""; |
696 | char dataset[MAXNAMELEN] = ""; | |
149e873a | 697 | zfs_handle_t *zhp = NULL; |
428870ff BB |
698 | int nowrites = 0; |
699 | int dur_txg = 0; | |
700 | int dur_secs = 0; | |
34dc7c2f BB |
701 | int ret; |
702 | int flags = 0; | |
703 | ||
65037d9b BB |
704 | if ((g_zfs = libzfs_init()) == NULL) { |
705 | (void) fprintf(stderr, "%s", libzfs_error_init(errno)); | |
937210a5 | 706 | return (1); |
65037d9b | 707 | } |
937210a5 BB |
708 | |
709 | libzfs_print_on_error(g_zfs, B_TRUE); | |
710 | ||
711 | if ((zfs_fd = open(ZFS_DEV, O_RDWR)) < 0) { | |
712 | (void) fprintf(stderr, "failed to open ZFS device\n"); | |
5df39c1e | 713 | libzfs_fini(g_zfs); |
937210a5 BB |
714 | return (1); |
715 | } | |
716 | ||
34dc7c2f BB |
717 | if (argc == 1) { |
718 | /* | |
719 | * No arguments. Print the available handlers. If there are no | |
720 | * available handlers, direct the user to '-h' for help | |
721 | * information. | |
722 | */ | |
723 | if (print_all_handlers() == 0) { | |
724 | (void) printf("No handlers registered.\n"); | |
725 | (void) printf("Run 'zinject -h' for usage " | |
726 | "information.\n"); | |
727 | } | |
5df39c1e | 728 | libzfs_fini(g_zfs); |
34dc7c2f BB |
729 | return (0); |
730 | } | |
731 | ||
428870ff | 732 | while ((c = getopt(argc, argv, |
cc92e9d0 | 733 | ":aA:b:d:D:f:Fg:qhIc:t:T:l:mr:s:e:uL:p:")) != -1) { |
34dc7c2f BB |
734 | switch (c) { |
735 | case 'a': | |
736 | flags |= ZINJECT_FLUSH_ARC; | |
737 | break; | |
428870ff BB |
738 | case 'A': |
739 | if (strcasecmp(optarg, "degrade") == 0) { | |
740 | action = VDEV_STATE_DEGRADED; | |
741 | } else if (strcasecmp(optarg, "fault") == 0) { | |
742 | action = VDEV_STATE_FAULTED; | |
743 | } else { | |
744 | (void) fprintf(stderr, "invalid action '%s': " | |
745 | "must be 'degrade' or 'fault'\n", optarg); | |
746 | usage(); | |
5df39c1e | 747 | libzfs_fini(g_zfs); |
428870ff BB |
748 | return (1); |
749 | } | |
750 | break; | |
34dc7c2f BB |
751 | case 'b': |
752 | raw = optarg; | |
753 | break; | |
754 | case 'c': | |
755 | cancel = optarg; | |
756 | break; | |
757 | case 'd': | |
758 | device = optarg; | |
759 | break; | |
cc92e9d0 GW |
760 | case 'D': |
761 | errno = 0; | |
26ef0cc7 TH |
762 | ret = parse_delay(optarg, &record.zi_timer, |
763 | &record.zi_nlanes); | |
764 | if (ret != 0) { | |
765 | ||
cc92e9d0 GW |
766 | (void) fprintf(stderr, "invalid i/o delay " |
767 | "value: '%s'\n", optarg); | |
768 | usage(); | |
5df39c1e | 769 | libzfs_fini(g_zfs); |
cc92e9d0 GW |
770 | return (1); |
771 | } | |
772 | break; | |
34dc7c2f BB |
773 | case 'e': |
774 | if (strcasecmp(optarg, "io") == 0) { | |
775 | error = EIO; | |
776 | } else if (strcasecmp(optarg, "checksum") == 0) { | |
777 | error = ECKSUM; | |
c3bd3fb4 TC |
778 | } else if (strcasecmp(optarg, "decompress") == 0) { |
779 | error = EINVAL; | |
be9a5c35 TC |
780 | } else if (strcasecmp(optarg, "decrypt") == 0) { |
781 | error = EACCES; | |
34dc7c2f BB |
782 | } else if (strcasecmp(optarg, "nxio") == 0) { |
783 | error = ENXIO; | |
572e2857 BB |
784 | } else if (strcasecmp(optarg, "dtl") == 0) { |
785 | error = ECHILD; | |
d977122d DB |
786 | } else if (strcasecmp(optarg, "corrupt") == 0) { |
787 | error = EILSEQ; | |
34dc7c2f BB |
788 | } else { |
789 | (void) fprintf(stderr, "invalid error type " | |
790 | "'%s': must be 'io', 'checksum' or " | |
791 | "'nxio'\n", optarg); | |
792 | usage(); | |
5df39c1e | 793 | libzfs_fini(g_zfs); |
34dc7c2f BB |
794 | return (1); |
795 | } | |
796 | break; | |
797 | case 'f': | |
0241e491 DB |
798 | ret = parse_frequency(optarg, &record.zi_freq); |
799 | if (ret != 0) { | |
800 | (void) fprintf(stderr, "%sfrequency value must " | |
801 | "be in the range [0.0001, 100.0]\n", | |
802 | ret == EINVAL ? "invalid value: " : | |
803 | ret == ERANGE ? "out of range: " : ""); | |
5df39c1e | 804 | libzfs_fini(g_zfs); |
34dc7c2f BB |
805 | return (1); |
806 | } | |
807 | break; | |
9babb374 BB |
808 | case 'F': |
809 | record.zi_failfast = B_TRUE; | |
810 | break; | |
428870ff BB |
811 | case 'g': |
812 | dur_txg = 1; | |
813 | record.zi_duration = (int)strtol(optarg, &end, 10); | |
814 | if (record.zi_duration <= 0 || *end != '\0') { | |
815 | (void) fprintf(stderr, "invalid duration '%s': " | |
816 | "must be a positive integer\n", optarg); | |
817 | usage(); | |
5df39c1e | 818 | libzfs_fini(g_zfs); |
428870ff BB |
819 | return (1); |
820 | } | |
821 | /* store duration of txgs as its negative */ | |
822 | record.zi_duration *= -1; | |
823 | break; | |
34dc7c2f BB |
824 | case 'h': |
825 | usage(); | |
5df39c1e | 826 | libzfs_fini(g_zfs); |
34dc7c2f | 827 | return (0); |
428870ff BB |
828 | case 'I': |
829 | /* default duration, if one hasn't yet been defined */ | |
830 | nowrites = 1; | |
831 | if (dur_secs == 0 && dur_txg == 0) | |
832 | record.zi_duration = 30; | |
833 | break; | |
34dc7c2f BB |
834 | case 'l': |
835 | level = (int)strtol(optarg, &end, 10); | |
836 | if (*end != '\0') { | |
837 | (void) fprintf(stderr, "invalid level '%s': " | |
838 | "must be an integer\n", optarg); | |
839 | usage(); | |
5df39c1e | 840 | libzfs_fini(g_zfs); |
34dc7c2f BB |
841 | return (1); |
842 | } | |
843 | break; | |
844 | case 'm': | |
845 | domount = 1; | |
846 | break; | |
428870ff BB |
847 | case 'p': |
848 | (void) strlcpy(record.zi_func, optarg, | |
849 | sizeof (record.zi_func)); | |
cc92e9d0 | 850 | record.zi_cmd = ZINJECT_PANIC; |
428870ff | 851 | break; |
34dc7c2f BB |
852 | case 'q': |
853 | quiet = 1; | |
854 | break; | |
855 | case 'r': | |
856 | range = optarg; | |
e89f1295 | 857 | flags |= ZINJECT_CALC_RANGE; |
34dc7c2f | 858 | break; |
428870ff BB |
859 | case 's': |
860 | dur_secs = 1; | |
861 | record.zi_duration = (int)strtol(optarg, &end, 10); | |
862 | if (record.zi_duration <= 0 || *end != '\0') { | |
863 | (void) fprintf(stderr, "invalid duration '%s': " | |
864 | "must be a positive integer\n", optarg); | |
865 | usage(); | |
5df39c1e | 866 | libzfs_fini(g_zfs); |
428870ff BB |
867 | return (1); |
868 | } | |
869 | break; | |
870 | case 'T': | |
871 | if (strcasecmp(optarg, "read") == 0) { | |
872 | io_type = ZIO_TYPE_READ; | |
873 | } else if (strcasecmp(optarg, "write") == 0) { | |
874 | io_type = ZIO_TYPE_WRITE; | |
875 | } else if (strcasecmp(optarg, "free") == 0) { | |
876 | io_type = ZIO_TYPE_FREE; | |
877 | } else if (strcasecmp(optarg, "claim") == 0) { | |
878 | io_type = ZIO_TYPE_CLAIM; | |
879 | } else if (strcasecmp(optarg, "all") == 0) { | |
880 | io_type = ZIO_TYPES; | |
881 | } else { | |
882 | (void) fprintf(stderr, "invalid I/O type " | |
883 | "'%s': must be 'read', 'write', 'free', " | |
884 | "'claim' or 'all'\n", optarg); | |
885 | usage(); | |
5df39c1e | 886 | libzfs_fini(g_zfs); |
428870ff BB |
887 | return (1); |
888 | } | |
889 | break; | |
34dc7c2f | 890 | case 't': |
b128c09f BB |
891 | if ((type = name_to_type(optarg)) == TYPE_INVAL && |
892 | !MOS_TYPE(type)) { | |
34dc7c2f BB |
893 | (void) fprintf(stderr, "invalid type '%s'\n", |
894 | optarg); | |
895 | usage(); | |
5df39c1e | 896 | libzfs_fini(g_zfs); |
34dc7c2f BB |
897 | return (1); |
898 | } | |
899 | break; | |
900 | case 'u': | |
901 | flags |= ZINJECT_UNLOAD_SPA; | |
902 | break; | |
b128c09f BB |
903 | case 'L': |
904 | if ((label = name_to_type(optarg)) == TYPE_INVAL && | |
905 | !LABEL_TYPE(type)) { | |
906 | (void) fprintf(stderr, "invalid label type " | |
907 | "'%s'\n", optarg); | |
908 | usage(); | |
5df39c1e | 909 | libzfs_fini(g_zfs); |
b128c09f BB |
910 | return (1); |
911 | } | |
912 | break; | |
34dc7c2f BB |
913 | case ':': |
914 | (void) fprintf(stderr, "option -%c requires an " | |
915 | "operand\n", optopt); | |
916 | usage(); | |
5df39c1e | 917 | libzfs_fini(g_zfs); |
34dc7c2f BB |
918 | return (1); |
919 | case '?': | |
920 | (void) fprintf(stderr, "invalid option '%c'\n", | |
921 | optopt); | |
922 | usage(); | |
5df39c1e | 923 | libzfs_fini(g_zfs); |
34dc7c2f BB |
924 | return (2); |
925 | } | |
926 | } | |
927 | ||
928 | argc -= optind; | |
929 | argv += optind; | |
930 | ||
cc92e9d0 GW |
931 | if (record.zi_duration != 0) |
932 | record.zi_cmd = ZINJECT_IGNORED_WRITES; | |
933 | ||
34dc7c2f BB |
934 | if (cancel != NULL) { |
935 | /* | |
936 | * '-c' is invalid with any other options. | |
937 | */ | |
938 | if (raw != NULL || range != NULL || type != TYPE_INVAL || | |
0241e491 DB |
939 | level != 0 || record.zi_cmd != ZINJECT_UNINITIALIZED || |
940 | record.zi_freq > 0) { | |
34dc7c2f BB |
941 | (void) fprintf(stderr, "cancel (-c) incompatible with " |
942 | "any other options\n"); | |
943 | usage(); | |
5df39c1e | 944 | libzfs_fini(g_zfs); |
34dc7c2f BB |
945 | return (2); |
946 | } | |
947 | if (argc != 0) { | |
948 | (void) fprintf(stderr, "extraneous argument to '-c'\n"); | |
949 | usage(); | |
5df39c1e | 950 | libzfs_fini(g_zfs); |
34dc7c2f BB |
951 | return (2); |
952 | } | |
953 | ||
954 | if (strcmp(cancel, "all") == 0) { | |
955 | return (cancel_all_handlers()); | |
956 | } else { | |
957 | int id = (int)strtol(cancel, &end, 10); | |
958 | if (*end != '\0') { | |
959 | (void) fprintf(stderr, "invalid handle id '%s':" | |
960 | " must be an integer or 'all'\n", cancel); | |
961 | usage(); | |
5df39c1e | 962 | libzfs_fini(g_zfs); |
34dc7c2f BB |
963 | return (1); |
964 | } | |
965 | return (cancel_handler(id)); | |
966 | } | |
967 | } | |
968 | ||
969 | if (device != NULL) { | |
970 | /* | |
971 | * Device (-d) injection uses a completely different mechanism | |
972 | * for doing injection, so handle it separately here. | |
973 | */ | |
974 | if (raw != NULL || range != NULL || type != TYPE_INVAL || | |
cc92e9d0 | 975 | level != 0 || record.zi_cmd != ZINJECT_UNINITIALIZED) { |
34dc7c2f BB |
976 | (void) fprintf(stderr, "device (-d) incompatible with " |
977 | "data error injection\n"); | |
978 | usage(); | |
5df39c1e | 979 | libzfs_fini(g_zfs); |
34dc7c2f BB |
980 | return (2); |
981 | } | |
982 | ||
983 | if (argc != 1) { | |
984 | (void) fprintf(stderr, "device (-d) injection requires " | |
985 | "a single pool name\n"); | |
986 | usage(); | |
5df39c1e | 987 | libzfs_fini(g_zfs); |
34dc7c2f BB |
988 | return (2); |
989 | } | |
990 | ||
5df39c1e | 991 | (void) strlcpy(pool, argv[0], sizeof (pool)); |
34dc7c2f BB |
992 | dataset[0] = '\0'; |
993 | ||
994 | if (error == ECKSUM) { | |
995 | (void) fprintf(stderr, "device error type must be " | |
d977122d DB |
996 | "'io', 'nxio' or 'corrupt'\n"); |
997 | libzfs_fini(g_zfs); | |
998 | return (1); | |
999 | } | |
1000 | ||
1001 | if (error == EILSEQ && | |
1002 | (record.zi_freq == 0 || io_type != ZIO_TYPE_READ)) { | |
1003 | (void) fprintf(stderr, "device corrupt errors require " | |
1004 | "io type read and a frequency value\n"); | |
5df39c1e | 1005 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1006 | return (1); |
1007 | } | |
1008 | ||
428870ff | 1009 | record.zi_iotype = io_type; |
5df39c1e | 1010 | if (translate_device(pool, device, label, &record) != 0) { |
1011 | libzfs_fini(g_zfs); | |
34dc7c2f | 1012 | return (1); |
5df39c1e | 1013 | } |
34dc7c2f BB |
1014 | if (!error) |
1015 | error = ENXIO; | |
428870ff BB |
1016 | |
1017 | if (action != VDEV_STATE_UNKNOWN) | |
1018 | return (perform_action(pool, &record, action)); | |
1019 | ||
34dc7c2f | 1020 | } else if (raw != NULL) { |
428870ff | 1021 | if (range != NULL || type != TYPE_INVAL || level != 0 || |
0241e491 DB |
1022 | record.zi_cmd != ZINJECT_UNINITIALIZED || |
1023 | record.zi_freq > 0) { | |
34dc7c2f BB |
1024 | (void) fprintf(stderr, "raw (-b) format with " |
1025 | "any other options\n"); | |
1026 | usage(); | |
5df39c1e | 1027 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1028 | return (2); |
1029 | } | |
1030 | ||
1031 | if (argc != 1) { | |
1032 | (void) fprintf(stderr, "raw (-b) format expects a " | |
1033 | "single pool name\n"); | |
1034 | usage(); | |
5df39c1e | 1035 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1036 | return (2); |
1037 | } | |
1038 | ||
5df39c1e | 1039 | (void) strlcpy(pool, argv[0], sizeof (pool)); |
34dc7c2f BB |
1040 | dataset[0] = '\0'; |
1041 | ||
1042 | if (error == ENXIO) { | |
1043 | (void) fprintf(stderr, "data error type must be " | |
1044 | "'checksum' or 'io'\n"); | |
5df39c1e | 1045 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1046 | return (1); |
1047 | } | |
1048 | ||
cc92e9d0 | 1049 | record.zi_cmd = ZINJECT_DATA_FAULT; |
5df39c1e | 1050 | if (translate_raw(raw, &record) != 0) { |
1051 | libzfs_fini(g_zfs); | |
34dc7c2f | 1052 | return (1); |
5df39c1e | 1053 | } |
34dc7c2f BB |
1054 | if (!error) |
1055 | error = EIO; | |
cc92e9d0 | 1056 | } else if (record.zi_cmd == ZINJECT_PANIC) { |
428870ff | 1057 | if (raw != NULL || range != NULL || type != TYPE_INVAL || |
0241e491 | 1058 | level != 0 || device != NULL || record.zi_freq > 0) { |
428870ff BB |
1059 | (void) fprintf(stderr, "panic (-p) incompatible with " |
1060 | "other options\n"); | |
1061 | usage(); | |
5df39c1e | 1062 | libzfs_fini(g_zfs); |
428870ff BB |
1063 | return (2); |
1064 | } | |
1065 | ||
1066 | if (argc < 1 || argc > 2) { | |
1067 | (void) fprintf(stderr, "panic (-p) injection requires " | |
1068 | "a single pool name and an optional id\n"); | |
1069 | usage(); | |
5df39c1e | 1070 | libzfs_fini(g_zfs); |
428870ff BB |
1071 | return (2); |
1072 | } | |
1073 | ||
5df39c1e | 1074 | (void) strlcpy(pool, argv[0], sizeof (pool)); |
428870ff BB |
1075 | if (argv[1] != NULL) |
1076 | record.zi_type = atoi(argv[1]); | |
1077 | dataset[0] = '\0'; | |
cc92e9d0 | 1078 | } else if (record.zi_cmd == ZINJECT_IGNORED_WRITES) { |
428870ff BB |
1079 | if (nowrites == 0) { |
1080 | (void) fprintf(stderr, "-s or -g meaningless " | |
1081 | "without -I (ignore writes)\n"); | |
1082 | usage(); | |
5df39c1e | 1083 | libzfs_fini(g_zfs); |
428870ff BB |
1084 | return (2); |
1085 | } else if (dur_secs && dur_txg) { | |
1086 | (void) fprintf(stderr, "choose a duration either " | |
1087 | "in seconds (-s) or a number of txgs (-g) " | |
1088 | "but not both\n"); | |
1089 | usage(); | |
5df39c1e | 1090 | libzfs_fini(g_zfs); |
428870ff BB |
1091 | return (2); |
1092 | } else if (argc != 1) { | |
1093 | (void) fprintf(stderr, "ignore writes (-I) " | |
1094 | "injection requires a single pool name\n"); | |
1095 | usage(); | |
5df39c1e | 1096 | libzfs_fini(g_zfs); |
428870ff BB |
1097 | return (2); |
1098 | } | |
1099 | ||
5df39c1e | 1100 | (void) strlcpy(pool, argv[0], sizeof (pool)); |
428870ff | 1101 | dataset[0] = '\0'; |
34dc7c2f BB |
1102 | } else if (type == TYPE_INVAL) { |
1103 | if (flags == 0) { | |
1104 | (void) fprintf(stderr, "at least one of '-b', '-d', " | |
428870ff BB |
1105 | "'-t', '-a', '-p', '-I' or '-u' " |
1106 | "must be specified\n"); | |
34dc7c2f | 1107 | usage(); |
5df39c1e | 1108 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1109 | return (2); |
1110 | } | |
1111 | ||
1112 | if (argc == 1 && (flags & ZINJECT_UNLOAD_SPA)) { | |
5df39c1e | 1113 | (void) strlcpy(pool, argv[0], sizeof (pool)); |
34dc7c2f BB |
1114 | dataset[0] = '\0'; |
1115 | } else if (argc != 0) { | |
1116 | (void) fprintf(stderr, "extraneous argument for " | |
1117 | "'-f'\n"); | |
1118 | usage(); | |
5df39c1e | 1119 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1120 | return (2); |
1121 | } | |
1122 | ||
1123 | flags |= ZINJECT_NULL; | |
1124 | } else { | |
1125 | if (argc != 1) { | |
1126 | (void) fprintf(stderr, "missing object\n"); | |
1127 | usage(); | |
5df39c1e | 1128 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1129 | return (2); |
1130 | } | |
1131 | ||
d977122d | 1132 | if (error == ENXIO || error == EILSEQ) { |
34dc7c2f BB |
1133 | (void) fprintf(stderr, "data error type must be " |
1134 | "'checksum' or 'io'\n"); | |
5df39c1e | 1135 | libzfs_fini(g_zfs); |
34dc7c2f BB |
1136 | return (1); |
1137 | } | |
1138 | ||
be9a5c35 TC |
1139 | if (error == EACCES) { |
1140 | if (type != TYPE_DATA) { | |
1141 | (void) fprintf(stderr, "decryption errors " | |
1142 | "may only be injected for 'data' types\n"); | |
1143 | libzfs_fini(g_zfs); | |
1144 | return (1); | |
1145 | } | |
1146 | ||
1147 | record.zi_cmd = ZINJECT_DECRYPT_FAULT; | |
1148 | /* | |
1149 | * Internally, ZFS actually uses ECKSUM for decryption | |
1150 | * errors since EACCES is used to indicate the key was | |
1151 | * not found. | |
1152 | */ | |
1153 | error = ECKSUM; | |
1154 | } else { | |
1155 | record.zi_cmd = ZINJECT_DATA_FAULT; | |
1156 | } | |
1157 | ||
34dc7c2f | 1158 | if (translate_record(type, argv[0], range, level, &record, pool, |
5df39c1e | 1159 | dataset) != 0) { |
02730c33 | 1160 | libzfs_fini(g_zfs); |
34dc7c2f | 1161 | return (1); |
5df39c1e | 1162 | } |
34dc7c2f BB |
1163 | if (!error) |
1164 | error = EIO; | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | * If this is pool-wide metadata, unmount everything. The ioctl() will | |
1169 | * unload the pool, so that we trigger spa-wide reopen of metadata next | |
1170 | * time we access the pool. | |
1171 | */ | |
1172 | if (dataset[0] != '\0' && domount) { | |
5df39c1e | 1173 | if ((zhp = zfs_open(g_zfs, dataset, |
02730c33 | 1174 | ZFS_TYPE_DATASET)) == NULL) { |
5df39c1e | 1175 | libzfs_fini(g_zfs); |
34dc7c2f | 1176 | return (1); |
5df39c1e | 1177 | } |
1178 | if (zfs_unmount(zhp, NULL, 0) != 0) { | |
1179 | libzfs_fini(g_zfs); | |
34dc7c2f | 1180 | return (1); |
5df39c1e | 1181 | } |
34dc7c2f BB |
1182 | } |
1183 | ||
1184 | record.zi_error = error; | |
1185 | ||
1186 | ret = register_handler(pool, flags, &record, quiet); | |
1187 | ||
1188 | if (dataset[0] != '\0' && domount) | |
1189 | ret = (zfs_mount(zhp, NULL, 0) != 0); | |
1190 | ||
1191 | libzfs_fini(g_zfs); | |
1192 | ||
1193 | return (ret); | |
1194 | } |