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.
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.
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]
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2012, 2015 by Delphix. All rights reserved.
29 * This userland component takes a set of options and uses libzpool to translate
30 * from a user-visible object type and name to an internal representation.
31 * There are two basic types of faults: device faults and data faults.
36 * Errors can be injected into a particular vdev using the '-d' option. This
37 * option takes a path or vdev GUID to uniquely identify the device within a
38 * pool. There are two types of errors that can be injected, EIO and ENXIO,
39 * that can be controlled through the '-e' option. The default is ENXIO. For
40 * EIO failures, any attempt to read data from the device will return EIO, but
41 * subsequent attempt to reopen the device will succeed. For ENXIO failures,
42 * any attempt to read from the device will return EIO, but any attempt to
43 * reopen the device will also return ENXIO.
44 * For label faults, the -L option must be specified. This allows faults
45 * to be injected into either the nvlist, uberblock, pad1, or pad2 region
46 * of all the labels for the specified device.
48 * This form of the command looks like:
50 * zinject -d device [-e errno] [-L <uber | nvlist | pad1 | pad2>] pool
55 * We begin with a tuple of the form:
57 * <type,level,range,object>
59 * type A string describing the type of data to target. Each type
60 * implicitly describes how to interpret 'object'. Currently,
61 * the following values are supported:
63 * data User data for a file
64 * dnode Dnode for a file or directory
66 * The following MOS objects are special. Instead of injecting
67 * errors on a particular object or blkid, we inject errors across
68 * all objects of the given type.
70 * mos Any data in the MOS
71 * mosdir object directory
72 * config pool configuration
76 * errlog persistent error log
78 * level Object level. Defaults to '0', not applicable to all types. If
79 * a range is given, this corresponds to the indirect block
80 * corresponding to the specific range.
82 * range A numerical range [start,end) within the object. Defaults to
83 * the full size of the file.
85 * object A string describing the logical location of the object. For
86 * files and directories (currently the only supported types),
87 * this is the path of the object on disk.
89 * This is translated, via libzpool, into the following internal representation:
91 * <type,objset,object,level,range>
93 * These types should be self-explanatory. This tuple is then passed to the
94 * kernel via a special ioctl() to initiate fault injection for the given
95 * object. Note that 'type' is not strictly necessary for fault injection, but
96 * is used when translating existing faults into a human-readable string.
99 * The command itself takes one of the forms:
102 * zinject <-a | -u pool>
103 * zinject -c <id|all>
104 * zinject [-q] <-t type> [-f freq] [-u] [-a] [-m] [-e errno] [-l level]
105 * [-r range] <object>
106 * zinject [-f freq] [-a] [-m] [-u] -b objset:object:level:start:end pool
108 * With no arguments, the command prints all currently registered injection
109 * handlers, with their numeric identifiers.
111 * The '-c' option will clear the given handler, or all handlers if 'all' is
114 * The '-e' option takes a string describing the errno to simulate. This must
115 * be either 'io' or 'checksum'. In most cases this will result in the same
116 * behavior, but RAID-Z will produce a different set of ereports for this
119 * The '-a', '-u', and '-m' flags toggle internal flush behavior. If '-a' is
120 * specified, then the ARC cache is flushed appropriately. If '-u' is
121 * specified, then the underlying SPA is unloaded. Either of these flags can be
122 * specified independently of any other handlers. The '-m' flag automatically
123 * does an unmount and remount of the underlying dataset to aid in flushing the
126 * The '-f' flag controls the frequency of errors injected, expressed as a
127 * integer percentage between 1 and 100. The default is 100.
129 * The this form is responsible for actually injecting the handler into the
130 * framework. It takes the arguments described above, translates them to the
131 * internal tuple using libzpool, and then issues an ioctl() to register the
134 * The final form can target a specific bookmark, regardless of whether a
135 * human-readable interface has been designed. It allows developers to specify
136 * a particular block by number.
146 #include <sys/fs/zfs.h>
147 #include <sys/param.h>
148 #include <sys/mount.h>
151 #include <libzfs_compat.h>
153 #undef verify /* both libzfs.h and zfs_context.h want to define this */
157 libzfs_handle_t *g_zfs;
164 static const char *errtable[TYPE_INVAL] = {
181 name_to_type(const char *arg)
184 for (i = 0; i < TYPE_INVAL; i++)
185 if (strcmp(errtable[i], arg) == 0)
192 type_to_name(uint64_t type)
195 case DMU_OT_OBJECT_DIRECTORY:
197 case DMU_OT_OBJECT_ARRAY:
199 case DMU_OT_PACKED_NVLIST:
203 case DMU_OT_SPACE_MAP:
205 case DMU_OT_ERROR_LOG:
214 * Print usage message.
224 "\t\tList all active injection records.\n"
226 "\tzinject -c <id|all>\n"
228 "\t\tClear the particular record (if given a numeric ID), or\n"
229 "\t\tall records if 'all' is specificed.\n"
231 "\tzinject -p <function name> pool\n"
233 "\t\tInject a panic fault at the specified function. Only \n"
234 "\t\tfunctions which call spa_vdev_config_exit(), or \n"
235 "\t\tspa_vdev_exit() will trigger a panic.\n"
237 "\tzinject -d device [-e errno] [-L <nvlist|uber|pad1|pad2>] [-F]\n"
238 "\t [-T <read|write|free|claim|all> pool\n"
240 "\t\tInject a fault into a particular device or the device's\n"
241 "\t\tlabel. Label injection can either be 'nvlist', 'uber',\n "
242 "\t\t'pad1', or 'pad2'.\n"
243 "\t\t'errno' can be 'nxio' (the default), 'io', or 'dtl'.\n"
245 "\tzinject -d device -A <degrade|fault> pool\n"
247 "\t\tPerform a specific action on a particular device\n"
249 "\tzinject -d device -D latency:lanes pool\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"
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"
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"
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"
281 "\tzinject -I [-s <seconds> | -g <txgs>] pool\n"
283 "\t\tCause the pool to stop writing blocks yet not\n"
284 "\t\treport errors for a duration. Simulates buggy hardware\n"
285 "\t\tthat fails to honor cache flush requests.\n"
286 "\t\tDefault duration is 30 seconds. The machine is panicked\n"
287 "\t\tat the end of the duration.\n"
289 "\tzinject -b objset:object:level:blkid pool\n"
291 "\t\tInject an error into pool 'pool' with the numeric bookmark\n"
292 "\t\tspecified by the remaining tuple. Each number is in\n"
293 "\t\thexidecimal, and only one block can be specified.\n"
295 "\tzinject [-q] <-t type> [-e errno] [-l level] [-r range]\n"
296 "\t [-a] [-m] [-u] [-f freq] <object>\n"
298 "\t\tInject an error into the object specified by the '-t' option\n"
299 "\t\tand the object descriptor. The 'object' parameter is\n"
300 "\t\tinterperted depending on the '-t' option.\n"
302 "\t\t-q\tQuiet mode. Only print out the handler number added.\n"
303 "\t\t-e\tInject a specific error. Must be either 'io' or\n"
304 "\t\t\t'checksum'. Default is 'io'.\n"
305 "\t\t-l\tInject error at a particular block level. Default is "
307 "\t\t-m\tAutomatically remount underlying filesystem.\n"
308 "\t\t-r\tInject error over a particular logical range of an\n"
309 "\t\t\tobject. Will be translated to the appropriate blkid\n"
310 "\t\t\trange according to the object's properties.\n"
311 "\t\t-a\tFlush the ARC cache. Can be specified without any\n"
312 "\t\t\tassociated object.\n"
313 "\t\t-u\tUnload the associated pool. Can be specified with only\n"
314 "\t\t\ta pool object.\n"
315 "\t\t-f\tOnly inject errors a fraction of the time. Expressed as\n"
316 "\t\t\ta percentage between 1 and 100.\n"
318 "\t-t data\t\tInject an error into the plain file contents of a\n"
319 "\t\t\tfile. The object must be specified as a complete path\n"
320 "\t\t\tto a file on a ZFS filesystem.\n"
322 "\t-t dnode\tInject an error into the metadnode in the block\n"
323 "\t\t\tcorresponding to the dnode for a file or directory. The\n"
324 "\t\t\t'-r' option is incompatible with this mode. The object\n"
325 "\t\t\tis specified as a complete path to a file or directory\n"
326 "\t\t\ton a ZFS filesystem.\n"
328 "\t-t <mos>\tInject errors into the MOS for objects of the given\n"
329 "\t\t\ttype. Valid types are: mos, mosdir, config, bpobj,\n"
330 "\t\t\tspacemap, metaslab, errlog. The only valid <object> is\n"
331 "\t\t\tthe poolname.\n");
335 iter_handlers(int (*func)(int, const char *, zinject_record_t *, void *),
338 zfs_cmd_t zc = { 0 };
341 while (ioctl(zfs_fd, ZFS_IOC_INJECT_LIST_NEXT, &zc) == 0)
342 if ((ret = func((int)zc.zc_guid, zc.zc_name,
343 &zc.zc_inject_record, data)) != 0)
346 if (errno != ENOENT) {
347 (void) fprintf(stderr, "Unable to list handlers: %s\n",
356 print_data_handler(int id, const char *pool, zinject_record_t *record,
361 if (record->zi_guid != 0 || record->zi_func[0] != '\0')
365 (void) printf("%3s %-15s %-6s %-6s %-8s %3s %-15s\n",
366 "ID", "POOL", "OBJSET", "OBJECT", "TYPE", "LVL", "RANGE");
367 (void) printf("--- --------------- ------ "
368 "------ -------- --- ---------------\n");
373 (void) printf("%3d %-15s %-6llu %-6llu %-8s %3d ", id, pool,
374 (u_longlong_t)record->zi_objset, (u_longlong_t)record->zi_object,
375 type_to_name(record->zi_type), record->zi_level);
377 if (record->zi_start == 0 &&
378 record->zi_end == -1ULL)
379 (void) printf("all\n");
381 (void) printf("[%llu, %llu]\n", (u_longlong_t)record->zi_start,
382 (u_longlong_t)record->zi_end);
388 print_device_handler(int id, const char *pool, zinject_record_t *record,
393 if (record->zi_guid == 0 || record->zi_func[0] != '\0')
396 if (record->zi_cmd == ZINJECT_DELAY_IO)
400 (void) printf("%3s %-15s %s\n", "ID", "POOL", "GUID");
401 (void) printf("--- --------------- ----------------\n");
406 (void) printf("%3d %-15s %llx\n", id, pool,
407 (u_longlong_t)record->zi_guid);
413 print_delay_handler(int id, const char *pool, zinject_record_t *record,
418 if (record->zi_guid == 0 || record->zi_func[0] != '\0')
421 if (record->zi_cmd != ZINJECT_DELAY_IO)
425 (void) printf("%3s %-15s %-15s %-15s %s\n",
426 "ID", "POOL", "DELAY (ms)", "LANES", "GUID");
427 (void) printf("--- --------------- --------------- "
428 "--------------- ----------------\n");
433 (void) printf("%3d %-15s %-15llu %-15llu %llx\n", id, pool,
434 (u_longlong_t)NSEC2MSEC(record->zi_timer),
435 (u_longlong_t)record->zi_nlanes,
436 (u_longlong_t)record->zi_guid);
442 print_panic_handler(int id, const char *pool, zinject_record_t *record,
447 if (record->zi_func[0] == '\0')
451 (void) printf("%3s %-15s %s\n", "ID", "POOL", "FUNCTION");
452 (void) printf("--- --------------- ----------------\n");
457 (void) printf("%3d %-15s %s\n", id, pool, record->zi_func);
463 * Print all registered error handlers. Returns the number of handlers
467 print_all_handlers(void)
469 int count = 0, total = 0;
471 (void) iter_handlers(print_device_handler, &count);
478 (void) iter_handlers(print_delay_handler, &count);
485 (void) iter_handlers(print_data_handler, &count);
492 (void) iter_handlers(print_panic_handler, &count);
494 return (count + total);
499 cancel_one_handler(int id, const char *pool, zinject_record_t *record,
502 zfs_cmd_t zc = { 0 };
504 zc.zc_guid = (uint64_t)id;
506 if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) {
507 (void) fprintf(stderr, "failed to remove handler %d: %s\n",
508 id, strerror(errno));
516 * Remove all fault injection handlers.
519 cancel_all_handlers(void)
521 int ret = iter_handlers(cancel_one_handler, NULL);
524 (void) printf("removed all registered handlers\n");
530 * Remove a specific fault injection handler.
533 cancel_handler(int id)
535 zfs_cmd_t zc = { 0 };
537 zc.zc_guid = (uint64_t)id;
539 if (ioctl(zfs_fd, ZFS_IOC_CLEAR_FAULT, &zc) != 0) {
540 (void) fprintf(stderr, "failed to remove handler %d: %s\n",
541 id, strerror(errno));
545 (void) printf("removed handler %d\n", id);
551 * Register a new fault injection handler.
554 register_handler(const char *pool, int flags, zinject_record_t *record,
557 zfs_cmd_t zc = { 0 };
559 (void) strcpy(zc.zc_name, pool);
560 zc.zc_inject_record = *record;
563 if (ioctl(zfs_fd, ZFS_IOC_INJECT_FAULT, &zc) != 0) {
564 (void) fprintf(stderr, "failed to add handler: %s\n",
569 if (flags & ZINJECT_NULL)
573 (void) printf("%llu\n", (u_longlong_t)zc.zc_guid);
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);
581 } else if (record->zi_func[0] != '\0') {
582 (void) printf(" panic function: %s\n",
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);
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");
602 (void) printf(" range: [%llu, %llu)\n",
603 (u_longlong_t)record->zi_start,
604 (u_longlong_t)record->zi_end);
612 perform_action(const char *pool, zinject_record_t *record, int cmd)
614 zfs_cmd_t zc = { 0 };
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;
621 if (ioctl(zfs_fd, ZFS_IOC_VDEV_SET_STATE, &zc) == 0)
628 parse_delay(char *str, uint64_t *delay, uint64_t *nlanes)
630 unsigned long scan_delay;
631 unsigned long scan_nlanes;
633 if (sscanf(str, "%lu:%lu", &scan_delay, &scan_nlanes) != 2)
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.
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.
650 *delay = MSEC2NSEC(scan_delay);
651 *nlanes = scan_nlanes;
657 main(int argc, char **argv)
669 int io_type = ZIO_TYPES;
670 int action = VDEV_STATE_UNKNOWN;
671 err_type_t type = TYPE_INVAL;
672 err_type_t label = TYPE_INVAL;
673 zinject_record_t record = { 0 };
674 char pool[MAXNAMELEN];
675 char dataset[MAXNAMELEN];
683 if ((g_zfs = libzfs_init()) == NULL) {
684 (void) fprintf(stderr, "internal error: failed to "
685 "initialize ZFS library\n");
689 libzfs_print_on_error(g_zfs, B_TRUE);
691 if ((zfs_fd = open(ZFS_DEV, O_RDWR)) < 0) {
692 (void) fprintf(stderr, "failed to open ZFS device\n");
698 * No arguments. Print the available handlers. If there are no
699 * available handlers, direct the user to '-h' for help
702 if (print_all_handlers() == 0) {
703 (void) printf("No handlers registered.\n");
704 (void) printf("Run 'zinject -h' for usage "
711 while ((c = getopt(argc, argv,
712 ":aA:b:d:D:f:Fg:qhIc:t:T:l:mr:s:e:uL:p:")) != -1) {
715 flags |= ZINJECT_FLUSH_ARC;
718 if (strcasecmp(optarg, "degrade") == 0) {
719 action = VDEV_STATE_DEGRADED;
720 } else if (strcasecmp(optarg, "fault") == 0) {
721 action = VDEV_STATE_FAULTED;
723 (void) fprintf(stderr, "invalid action '%s': "
724 "must be 'degrade' or 'fault'\n", optarg);
739 ret = parse_delay(optarg, &record.zi_timer,
742 (void) fprintf(stderr, "invalid i/o delay "
743 "value: '%s'\n", optarg);
749 if (strcasecmp(optarg, "io") == 0) {
751 } else if (strcasecmp(optarg, "checksum") == 0) {
753 } else if (strcasecmp(optarg, "nxio") == 0) {
755 } else if (strcasecmp(optarg, "dtl") == 0) {
758 (void) fprintf(stderr, "invalid error type "
759 "'%s': must be 'io', 'checksum' or "
766 record.zi_freq = atoi(optarg);
767 if (record.zi_freq < 1 || record.zi_freq > 100) {
768 (void) fprintf(stderr, "frequency range must "
769 "be in the range (0, 100]\n");
774 record.zi_failfast = B_TRUE;
778 record.zi_duration = (int)strtol(optarg, &end, 10);
779 if (record.zi_duration <= 0 || *end != '\0') {
780 (void) fprintf(stderr, "invalid duration '%s': "
781 "must be a positive integer\n", optarg);
785 /* store duration of txgs as its negative */
786 record.zi_duration *= -1;
792 /* default duration, if one hasn't yet been defined */
794 if (dur_secs == 0 && dur_txg == 0)
795 record.zi_duration = 30;
798 level = (int)strtol(optarg, &end, 10);
800 (void) fprintf(stderr, "invalid level '%s': "
801 "must be an integer\n", optarg);
810 (void) strlcpy(record.zi_func, optarg,
811 sizeof (record.zi_func));
812 record.zi_cmd = ZINJECT_PANIC;
822 record.zi_duration = (int)strtol(optarg, &end, 10);
823 if (record.zi_duration <= 0 || *end != '\0') {
824 (void) fprintf(stderr, "invalid duration '%s': "
825 "must be a positive integer\n", optarg);
831 if (strcasecmp(optarg, "read") == 0) {
832 io_type = ZIO_TYPE_READ;
833 } else if (strcasecmp(optarg, "write") == 0) {
834 io_type = ZIO_TYPE_WRITE;
835 } else if (strcasecmp(optarg, "free") == 0) {
836 io_type = ZIO_TYPE_FREE;
837 } else if (strcasecmp(optarg, "claim") == 0) {
838 io_type = ZIO_TYPE_CLAIM;
839 } else if (strcasecmp(optarg, "all") == 0) {
842 (void) fprintf(stderr, "invalid I/O type "
843 "'%s': must be 'read', 'write', 'free', "
844 "'claim' or 'all'\n", optarg);
850 if ((type = name_to_type(optarg)) == TYPE_INVAL &&
852 (void) fprintf(stderr, "invalid type '%s'\n",
859 flags |= ZINJECT_UNLOAD_SPA;
862 if ((label = name_to_type(optarg)) == TYPE_INVAL &&
864 (void) fprintf(stderr, "invalid label type "
871 (void) fprintf(stderr, "option -%c requires an "
872 "operand\n", optopt);
876 (void) fprintf(stderr, "invalid option '%c'\n",
886 if (record.zi_duration != 0)
887 record.zi_cmd = ZINJECT_IGNORED_WRITES;
889 if (cancel != NULL) {
891 * '-c' is invalid with any other options.
893 if (raw != NULL || range != NULL || type != TYPE_INVAL ||
894 level != 0 || record.zi_cmd != ZINJECT_UNINITIALIZED) {
895 (void) fprintf(stderr, "cancel (-c) incompatible with "
896 "any other options\n");
901 (void) fprintf(stderr, "extraneous argument to '-c'\n");
906 if (strcmp(cancel, "all") == 0) {
907 return (cancel_all_handlers());
909 int id = (int)strtol(cancel, &end, 10);
911 (void) fprintf(stderr, "invalid handle id '%s':"
912 " must be an integer or 'all'\n", cancel);
916 return (cancel_handler(id));
920 if (device != NULL) {
922 * Device (-d) injection uses a completely different mechanism
923 * for doing injection, so handle it separately here.
925 if (raw != NULL || range != NULL || type != TYPE_INVAL ||
926 level != 0 || record.zi_cmd != ZINJECT_UNINITIALIZED) {
927 (void) fprintf(stderr, "device (-d) incompatible with "
928 "data error injection\n");
934 (void) fprintf(stderr, "device (-d) injection requires "
935 "a single pool name\n");
940 (void) strcpy(pool, argv[0]);
943 if (error == ECKSUM) {
944 (void) fprintf(stderr, "device error type must be "
949 record.zi_iotype = io_type;
950 if (translate_device(pool, device, label, &record) != 0)
955 if (action != VDEV_STATE_UNKNOWN)
956 return (perform_action(pool, &record, action));
958 } else if (raw != NULL) {
959 if (range != NULL || type != TYPE_INVAL || level != 0 ||
960 record.zi_cmd != ZINJECT_UNINITIALIZED) {
961 (void) fprintf(stderr, "raw (-b) format with "
962 "any other options\n");
968 (void) fprintf(stderr, "raw (-b) format expects a "
969 "single pool name\n");
974 (void) strcpy(pool, argv[0]);
977 if (error == ENXIO) {
978 (void) fprintf(stderr, "data error type must be "
979 "'checksum' or 'io'\n");
983 record.zi_cmd = ZINJECT_DATA_FAULT;
984 if (translate_raw(raw, &record) != 0)
988 } else if (record.zi_cmd == ZINJECT_PANIC) {
989 if (raw != NULL || range != NULL || type != TYPE_INVAL ||
990 level != 0 || device != NULL) {
991 (void) fprintf(stderr, "panic (-p) incompatible with "
997 if (argc < 1 || argc > 2) {
998 (void) fprintf(stderr, "panic (-p) injection requires "
999 "a single pool name and an optional id\n");
1004 (void) strcpy(pool, argv[0]);
1005 if (argv[1] != NULL)
1006 record.zi_type = atoi(argv[1]);
1008 } else if (record.zi_cmd == ZINJECT_IGNORED_WRITES) {
1009 if (nowrites == 0) {
1010 (void) fprintf(stderr, "-s or -g meaningless "
1011 "without -I (ignore writes)\n");
1014 } else if (dur_secs && dur_txg) {
1015 (void) fprintf(stderr, "choose a duration either "
1016 "in seconds (-s) or a number of txgs (-g) "
1020 } else if (argc != 1) {
1021 (void) fprintf(stderr, "ignore writes (-I) "
1022 "injection requires a single pool name\n");
1027 (void) strcpy(pool, argv[0]);
1029 } else if (type == TYPE_INVAL) {
1031 (void) fprintf(stderr, "at least one of '-b', '-d', "
1032 "'-t', '-a', '-p', '-I' or '-u' "
1033 "must be specified\n");
1038 if (argc == 1 && (flags & ZINJECT_UNLOAD_SPA)) {
1039 (void) strcpy(pool, argv[0]);
1041 } else if (argc != 0) {
1042 (void) fprintf(stderr, "extraneous argument for "
1048 flags |= ZINJECT_NULL;
1051 (void) fprintf(stderr, "missing object\n");
1056 if (error == ENXIO) {
1057 (void) fprintf(stderr, "data error type must be "
1058 "'checksum' or 'io'\n");
1062 record.zi_cmd = ZINJECT_DATA_FAULT;
1063 if (translate_record(type, argv[0], range, level, &record, pool,
1071 * If this is pool-wide metadata, unmount everything. The ioctl() will
1072 * unload the pool, so that we trigger spa-wide reopen of metadata next
1073 * time we access the pool.
1075 if (dataset[0] != '\0' && domount) {
1076 if ((zhp = zfs_open(g_zfs, dataset, ZFS_TYPE_DATASET)) == NULL)
1079 if (zfs_unmount(zhp, NULL, 0) != 0)
1083 record.zi_error = error;
1085 ret = register_handler(pool, flags, &record, quiet);
1087 if (dataset[0] != '\0' && domount)
1088 ret = (zfs_mount(zhp, NULL, 0) != 0);