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4756 metaslab_group_preload() could deadlock
[unleashed.git] / usr / src / cmd / ztest / ztest.c
blobc12eb098a3b4cca52a27ca1b7107f3a269448373
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 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 */
27
28 /*
29 * The objective of this program is to provide a DMU/ZAP/SPA stress test
30 * that runs entirely in userland, is easy to use, and easy to extend.
31 *
32 * The overall design of the ztest program is as follows:
33 *
34 * (1) For each major functional area (e.g. adding vdevs to a pool,
35 * creating and destroying datasets, reading and writing objects, etc)
36 * we have a simple routine to test that functionality. These
37 * individual routines do not have to do anything "stressful".
38 *
39 * (2) We turn these simple functionality tests into a stress test by
40 * running them all in parallel, with as many threads as desired,
41 * and spread across as many datasets, objects, and vdevs as desired.
42 *
43 * (3) While all this is happening, we inject faults into the pool to
44 * verify that self-healing data really works.
45 *
46 * (4) Every time we open a dataset, we change its checksum and compression
47 * functions. Thus even individual objects vary from block to block
48 * in which checksum they use and whether they're compressed.
49 *
50 * (5) To verify that we never lose on-disk consistency after a crash,
51 * we run the entire test in a child of the main process.
52 * At random times, the child self-immolates with a SIGKILL.
53 * This is the software equivalent of pulling the power cord.
54 * The parent then runs the test again, using the existing
55 * storage pool, as many times as desired. If backwards compatibility
56 * testing is enabled ztest will sometimes run the "older" version
57 * of ztest after a SIGKILL.
58 *
59 * (6) To verify that we don't have future leaks or temporal incursions,
60 * many of the functional tests record the transaction group number
61 * as part of their data. When reading old data, they verify that
62 * the transaction group number is less than the current, open txg.
63 * If you add a new test, please do this if applicable.
64 *
65 * When run with no arguments, ztest runs for about five minutes and
66 * produces no output if successful. To get a little bit of information,
67 * specify -V. To get more information, specify -VV, and so on.
68 *
69 * To turn this into an overnight stress test, use -T to specify run time.
70 *
71 * You can ask more more vdevs [-v], datasets [-d], or threads [-t]
72 * to increase the pool capacity, fanout, and overall stress level.
73 *
74 * Use the -k option to set the desired frequency of kills.
75 *
76 * When ztest invokes itself it passes all relevant information through a
77 * temporary file which is mmap-ed in the child process. This allows shared
78 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
79 * stored at offset 0 of this file and contains information on the size and
80 * number of shared structures in the file. The information stored in this file
81 * must remain backwards compatible with older versions of ztest so that
82 * ztest can invoke them during backwards compatibility testing (-B).
83 */
84
85 #include <sys/zfs_context.h>
86 #include <sys/spa.h>
87 #include <sys/dmu.h>
88 #include <sys/txg.h>
89 #include <sys/dbuf.h>
90 #include <sys/zap.h>
91 #include <sys/dmu_objset.h>
92 #include <sys/poll.h>
93 #include <sys/stat.h>
94 #include <sys/time.h>
95 #include <sys/wait.h>
96 #include <sys/mman.h>
97 #include <sys/resource.h>
98 #include <sys/zio.h>
99 #include <sys/zil.h>
100 #include <sys/zil_impl.h>
101 #include <sys/vdev_impl.h>
102 #include <sys/vdev_file.h>
103 #include <sys/spa_impl.h>
104 #include <sys/metaslab_impl.h>
105 #include <sys/dsl_prop.h>
106 #include <sys/dsl_dataset.h>
107 #include <sys/dsl_destroy.h>
108 #include <sys/dsl_scan.h>
109 #include <sys/zio_checksum.h>
110 #include <sys/refcount.h>
111 #include <sys/zfeature.h>
112 #include <sys/dsl_userhold.h>
113 #include <stdio.h>
114 #include <stdio_ext.h>
115 #include <stdlib.h>
116 #include <unistd.h>
117 #include <signal.h>
118 #include <umem.h>
119 #include <dlfcn.h>
120 #include <ctype.h>
121 #include <math.h>
122 #include <sys/fs/zfs.h>
123 #include <libnvpair.h>
124
125 static int ztest_fd_data = -1;
126 static int ztest_fd_rand = -1;
127
128 typedef struct ztest_shared_hdr {
129 uint64_t zh_hdr_size;
130 uint64_t zh_opts_size;
131 uint64_t zh_size;
132 uint64_t zh_stats_size;
133 uint64_t zh_stats_count;
134 uint64_t zh_ds_size;
135 uint64_t zh_ds_count;
136 } ztest_shared_hdr_t;
137
138 static ztest_shared_hdr_t *ztest_shared_hdr;
139
140 typedef struct ztest_shared_opts {
141 char zo_pool[MAXNAMELEN];
142 char zo_dir[MAXNAMELEN];
143 char zo_alt_ztest[MAXNAMELEN];
144 char zo_alt_libpath[MAXNAMELEN];
145 uint64_t zo_vdevs;
146 uint64_t zo_vdevtime;
147 size_t zo_vdev_size;
148 int zo_ashift;
149 int zo_mirrors;
150 int zo_raidz;
151 int zo_raidz_parity;
152 int zo_datasets;
153 int zo_threads;
154 uint64_t zo_passtime;
155 uint64_t zo_killrate;
156 int zo_verbose;
157 int zo_init;
158 uint64_t zo_time;
159 uint64_t zo_maxloops;
160 uint64_t zo_metaslab_gang_bang;
161 } ztest_shared_opts_t;
162
163 static const ztest_shared_opts_t ztest_opts_defaults = {
164 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' },
165 .zo_dir = { '/', 't', 'm', 'p', '\0' },
166 .zo_alt_ztest = { '\0' },
167 .zo_alt_libpath = { '\0' },
168 .zo_vdevs = 5,
169 .zo_ashift = SPA_MINBLOCKSHIFT,
170 .zo_mirrors = 2,
171 .zo_raidz = 4,
172 .zo_raidz_parity = 1,
173 .zo_vdev_size = SPA_MINDEVSIZE,
174 .zo_datasets = 7,
175 .zo_threads = 23,
176 .zo_passtime = 60, /* 60 seconds */
177 .zo_killrate = 70, /* 70% kill rate */
178 .zo_verbose = 0,
179 .zo_init = 1,
180 .zo_time = 300, /* 5 minutes */
181 .zo_maxloops = 50, /* max loops during spa_freeze() */
182 .zo_metaslab_gang_bang = 32 << 10
183 };
184
185 extern uint64_t metaslab_gang_bang;
186 extern uint64_t metaslab_df_alloc_threshold;
187 extern uint64_t zfs_deadman_synctime_ms;
188 extern int metaslab_preload_limit;
189
190 static ztest_shared_opts_t *ztest_shared_opts;
191 static ztest_shared_opts_t ztest_opts;
192
193 typedef struct ztest_shared_ds {
194 uint64_t zd_seq;
195 } ztest_shared_ds_t;
196
197 static ztest_shared_ds_t *ztest_shared_ds;
198 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
199
200 #define BT_MAGIC 0x123456789abcdefULL
201 #define MAXFAULTS() \
202 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1)
203
204 enum ztest_io_type {
205 ZTEST_IO_WRITE_TAG,
206 ZTEST_IO_WRITE_PATTERN,
207 ZTEST_IO_WRITE_ZEROES,
208 ZTEST_IO_TRUNCATE,
209 ZTEST_IO_SETATTR,
210 ZTEST_IO_REWRITE,
211 ZTEST_IO_TYPES
212 };
213
214 typedef struct ztest_block_tag {
215 uint64_t bt_magic;
216 uint64_t bt_objset;
217 uint64_t bt_object;
218 uint64_t bt_offset;
219 uint64_t bt_gen;
220 uint64_t bt_txg;
221 uint64_t bt_crtxg;
222 } ztest_block_tag_t;
223
224 typedef struct bufwad {
225 uint64_t bw_index;
226 uint64_t bw_txg;
227 uint64_t bw_data;
228 } bufwad_t;
229
230 /*
231 * XXX -- fix zfs range locks to be generic so we can use them here.
232 */
233 typedef enum {
234 RL_READER,
235 RL_WRITER,
236 RL_APPEND
237 } rl_type_t;
238
239 typedef struct rll {
240 void *rll_writer;
241 int rll_readers;
242 mutex_t rll_lock;
243 cond_t rll_cv;
244 } rll_t;
245
246 typedef struct rl {
247 uint64_t rl_object;
248 uint64_t rl_offset;
249 uint64_t rl_size;
250 rll_t *rl_lock;
251 } rl_t;
252
253 #define ZTEST_RANGE_LOCKS 64
254 #define ZTEST_OBJECT_LOCKS 64
255
256 /*
257 * Object descriptor. Used as a template for object lookup/create/remove.
258 */
259 typedef struct ztest_od {
260 uint64_t od_dir;
261 uint64_t od_object;
262 dmu_object_type_t od_type;
263 dmu_object_type_t od_crtype;
264 uint64_t od_blocksize;
265 uint64_t od_crblocksize;
266 uint64_t od_gen;
267 uint64_t od_crgen;
268 char od_name[MAXNAMELEN];
269 } ztest_od_t;
270
271 /*
272 * Per-dataset state.
273 */
274 typedef struct ztest_ds {
275 ztest_shared_ds_t *zd_shared;
276 objset_t *zd_os;
277 rwlock_t zd_zilog_lock;
278 zilog_t *zd_zilog;
279 ztest_od_t *zd_od; /* debugging aid */
280 char zd_name[MAXNAMELEN];
281 mutex_t zd_dirobj_lock;
282 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
283 rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
284 } ztest_ds_t;
285
286 /*
287 * Per-iteration state.
288 */
289 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
290
291 typedef struct ztest_info {
292 ztest_func_t *zi_func; /* test function */
293 uint64_t zi_iters; /* iterations per execution */
294 uint64_t *zi_interval; /* execute every <interval> seconds */
295 } ztest_info_t;
296
297 typedef struct ztest_shared_callstate {
298 uint64_t zc_count; /* per-pass count */
299 uint64_t zc_time; /* per-pass time */
300 uint64_t zc_next; /* next time to call this function */
301 } ztest_shared_callstate_t;
302
303 static ztest_shared_callstate_t *ztest_shared_callstate;
304 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
305
306 /*
307 * Note: these aren't static because we want dladdr() to work.
308 */
309 ztest_func_t ztest_dmu_read_write;
310 ztest_func_t ztest_dmu_write_parallel;
311 ztest_func_t ztest_dmu_object_alloc_free;
312 ztest_func_t ztest_dmu_commit_callbacks;
313 ztest_func_t ztest_zap;
314 ztest_func_t ztest_zap_parallel;
315 ztest_func_t ztest_zil_commit;
316 ztest_func_t ztest_zil_remount;
317 ztest_func_t ztest_dmu_read_write_zcopy;
318 ztest_func_t ztest_dmu_objset_create_destroy;
319 ztest_func_t ztest_dmu_prealloc;
320 ztest_func_t ztest_fzap;
321 ztest_func_t ztest_dmu_snapshot_create_destroy;
322 ztest_func_t ztest_dsl_prop_get_set;
323 ztest_func_t ztest_spa_prop_get_set;
324 ztest_func_t ztest_spa_create_destroy;
325 ztest_func_t ztest_fault_inject;
326 ztest_func_t ztest_ddt_repair;
327 ztest_func_t ztest_dmu_snapshot_hold;
328 ztest_func_t ztest_spa_rename;
329 ztest_func_t ztest_scrub;
330 ztest_func_t ztest_dsl_dataset_promote_busy;
331 ztest_func_t ztest_vdev_attach_detach;
332 ztest_func_t ztest_vdev_LUN_growth;
333 ztest_func_t ztest_vdev_add_remove;
334 ztest_func_t ztest_vdev_aux_add_remove;
335 ztest_func_t ztest_split_pool;
336 ztest_func_t ztest_reguid;
337 ztest_func_t ztest_spa_upgrade;
338
339 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
340 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
341 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
342 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
343 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
344
345 ztest_info_t ztest_info[] = {
346 { ztest_dmu_read_write, 1, &zopt_always },
347 { ztest_dmu_write_parallel, 10, &zopt_always },
348 { ztest_dmu_object_alloc_free, 1, &zopt_always },
349 { ztest_dmu_commit_callbacks, 1, &zopt_always },
350 { ztest_zap, 30, &zopt_always },
351 { ztest_zap_parallel, 100, &zopt_always },
352 { ztest_split_pool, 1, &zopt_always },
353 { ztest_zil_commit, 1, &zopt_incessant },
354 { ztest_zil_remount, 1, &zopt_sometimes },
355 { ztest_dmu_read_write_zcopy, 1, &zopt_often },
356 { ztest_dmu_objset_create_destroy, 1, &zopt_often },
357 { ztest_dsl_prop_get_set, 1, &zopt_often },
358 { ztest_spa_prop_get_set, 1, &zopt_sometimes },
359 #if 0
360 { ztest_dmu_prealloc, 1, &zopt_sometimes },
361 #endif
362 { ztest_fzap, 1, &zopt_sometimes },
363 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes },
364 { ztest_spa_create_destroy, 1, &zopt_sometimes },
365 { ztest_fault_inject, 1, &zopt_sometimes },
366 { ztest_ddt_repair, 1, &zopt_sometimes },
367 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes },
368 { ztest_reguid, 1, &zopt_rarely },
369 { ztest_spa_rename, 1, &zopt_rarely },
370 { ztest_scrub, 1, &zopt_rarely },
371 { ztest_spa_upgrade, 1, &zopt_rarely },
372 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely },
373 { ztest_vdev_attach_detach, 1, &zopt_sometimes },
374 { ztest_vdev_LUN_growth, 1, &zopt_rarely },
375 { ztest_vdev_add_remove, 1,
376 &ztest_opts.zo_vdevtime },
377 { ztest_vdev_aux_add_remove, 1,
378 &ztest_opts.zo_vdevtime },
379 };
380
381 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t))
382
383 /*
384 * The following struct is used to hold a list of uncalled commit callbacks.
385 * The callbacks are ordered by txg number.
386 */
387 typedef struct ztest_cb_list {
388 mutex_t zcl_callbacks_lock;
389 list_t zcl_callbacks;
390 } ztest_cb_list_t;
391
392 /*
393 * Stuff we need to share writably between parent and child.
394 */
395 typedef struct ztest_shared {
396 boolean_t zs_do_init;
397 hrtime_t zs_proc_start;
398 hrtime_t zs_proc_stop;
399 hrtime_t zs_thread_start;
400 hrtime_t zs_thread_stop;
401 hrtime_t zs_thread_kill;
402 uint64_t zs_enospc_count;
403 uint64_t zs_vdev_next_leaf;
404 uint64_t zs_vdev_aux;
405 uint64_t zs_alloc;
406 uint64_t zs_space;
407 uint64_t zs_splits;
408 uint64_t zs_mirrors;
409 uint64_t zs_metaslab_sz;
410 uint64_t zs_metaslab_df_alloc_threshold;
411 uint64_t zs_guid;
412 } ztest_shared_t;
413
414 #define ID_PARALLEL -1ULL
415
416 static char ztest_dev_template[] = "%s/%s.%llua";
417 static char ztest_aux_template[] = "%s/%s.%s.%llu";
418 ztest_shared_t *ztest_shared;
419
420 static spa_t *ztest_spa = NULL;
421 static ztest_ds_t *ztest_ds;
422
423 static mutex_t ztest_vdev_lock;
424
425 /*
426 * The ztest_name_lock protects the pool and dataset namespace used by
427 * the individual tests. To modify the namespace, consumers must grab
428 * this lock as writer. Grabbing the lock as reader will ensure that the
429 * namespace does not change while the lock is held.
430 */
431 static rwlock_t ztest_name_lock;
432
433 static boolean_t ztest_dump_core = B_TRUE;
434 static boolean_t ztest_exiting;
435
436 /* Global commit callback list */
437 static ztest_cb_list_t zcl;
438
439 enum ztest_object {
440 ZTEST_META_DNODE = 0,
441 ZTEST_DIROBJ,
442 ZTEST_OBJECTS
443 };
444
445 static void usage(boolean_t) __NORETURN;
446
447 /*
448 * These libumem hooks provide a reasonable set of defaults for the allocator's
449 * debugging facilities.
450 */
451 const char *
452 _umem_debug_init()
453 {
454 return ("default,verbose"); /* $UMEM_DEBUG setting */
455 }
456
457 const char *
458 _umem_logging_init(void)
459 {
460 return ("fail,contents"); /* $UMEM_LOGGING setting */
461 }
462
463 #define FATAL_MSG_SZ 1024
464
465 char *fatal_msg;
466
467 static void
468 fatal(int do_perror, char *message, ...)
469 {
470 va_list args;
471 int save_errno = errno;
472 char buf[FATAL_MSG_SZ];
473
474 (void) fflush(stdout);
475
476 va_start(args, message);
477 (void) sprintf(buf, "ztest: ");
478 /* LINTED */
479 (void) vsprintf(buf + strlen(buf), message, args);
480 va_end(args);
481 if (do_perror) {
482 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
483 ": %s", strerror(save_errno));
484 }
485 (void) fprintf(stderr, "%s\n", buf);
486 fatal_msg = buf; /* to ease debugging */
487 if (ztest_dump_core)
488 abort();
489 exit(3);
490 }
491
492 static int
493 str2shift(const char *buf)
494 {
495 const char *ends = "BKMGTPEZ";
496 int i;
497
498 if (buf[0] == '\0')
499 return (0);
500 for (i = 0; i < strlen(ends); i++) {
501 if (toupper(buf[0]) == ends[i])
502 break;
503 }
504 if (i == strlen(ends)) {
505 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
506 buf);
507 usage(B_FALSE);
508 }
509 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
510 return (10*i);
511 }
512 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
513 usage(B_FALSE);
514 /* NOTREACHED */
515 }
516
517 static uint64_t
518 nicenumtoull(const char *buf)
519 {
520 char *end;
521 uint64_t val;
522
523 val = strtoull(buf, &end, 0);
524 if (end == buf) {
525 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
526 usage(B_FALSE);
527 } else if (end[0] == '.') {
528 double fval = strtod(buf, &end);
529 fval *= pow(2, str2shift(end));
530 if (fval > UINT64_MAX) {
531 (void) fprintf(stderr, "ztest: value too large: %s\n",
532 buf);
533 usage(B_FALSE);
534 }
535 val = (uint64_t)fval;
536 } else {
537 int shift = str2shift(end);
538 if (shift >= 64 || (val << shift) >> shift != val) {
539 (void) fprintf(stderr, "ztest: value too large: %s\n",
540 buf);
541 usage(B_FALSE);
542 }
543 val <<= shift;
544 }
545 return (val);
546 }
547
548 static void
549 usage(boolean_t requested)
550 {
551 const ztest_shared_opts_t *zo = &ztest_opts_defaults;
552
553 char nice_vdev_size[10];
554 char nice_gang_bang[10];
555 FILE *fp = requested ? stdout : stderr;
556
557 nicenum(zo->zo_vdev_size, nice_vdev_size);
558 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang);
559
560 (void) fprintf(fp, "Usage: %s\n"
561 "\t[-v vdevs (default: %llu)]\n"
562 "\t[-s size_of_each_vdev (default: %s)]\n"
563 "\t[-a alignment_shift (default: %d)] use 0 for random\n"
564 "\t[-m mirror_copies (default: %d)]\n"
565 "\t[-r raidz_disks (default: %d)]\n"
566 "\t[-R raidz_parity (default: %d)]\n"
567 "\t[-d datasets (default: %d)]\n"
568 "\t[-t threads (default: %d)]\n"
569 "\t[-g gang_block_threshold (default: %s)]\n"
570 "\t[-i init_count (default: %d)] initialize pool i times\n"
571 "\t[-k kill_percentage (default: %llu%%)]\n"
572 "\t[-p pool_name (default: %s)]\n"
573 "\t[-f dir (default: %s)] file directory for vdev files\n"
574 "\t[-V] verbose (use multiple times for ever more blather)\n"
575 "\t[-E] use existing pool instead of creating new one\n"
576 "\t[-T time (default: %llu sec)] total run time\n"
577 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n"
578 "\t[-P passtime (default: %llu sec)] time per pass\n"
579 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n"
580 "\t[-h] (print help)\n"
581 "",
582 zo->zo_pool,
583 (u_longlong_t)zo->zo_vdevs, /* -v */
584 nice_vdev_size, /* -s */
585 zo->zo_ashift, /* -a */
586 zo->zo_mirrors, /* -m */
587 zo->zo_raidz, /* -r */
588 zo->zo_raidz_parity, /* -R */
589 zo->zo_datasets, /* -d */
590 zo->zo_threads, /* -t */
591 nice_gang_bang, /* -g */
592 zo->zo_init, /* -i */
593 (u_longlong_t)zo->zo_killrate, /* -k */
594 zo->zo_pool, /* -p */
595 zo->zo_dir, /* -f */
596 (u_longlong_t)zo->zo_time, /* -T */
597 (u_longlong_t)zo->zo_maxloops, /* -F */
598 (u_longlong_t)zo->zo_passtime);
599 exit(requested ? 0 : 1);
600 }
601
602 static void
603 process_options(int argc, char **argv)
604 {
605 char *path;
606 ztest_shared_opts_t *zo = &ztest_opts;
607
608 int opt;
609 uint64_t value;
610 char altdir[MAXNAMELEN] = { 0 };
611
612 bcopy(&ztest_opts_defaults, zo, sizeof (*zo));
613
614 while ((opt = getopt(argc, argv,
615 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) {
616 value = 0;
617 switch (opt) {
618 case 'v':
619 case 's':
620 case 'a':
621 case 'm':
622 case 'r':
623 case 'R':
624 case 'd':
625 case 't':
626 case 'g':
627 case 'i':
628 case 'k':
629 case 'T':
630 case 'P':
631 case 'F':
632 value = nicenumtoull(optarg);
633 }
634 switch (opt) {
635 case 'v':
636 zo->zo_vdevs = value;
637 break;
638 case 's':
639 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
640 break;
641 case 'a':
642 zo->zo_ashift = value;
643 break;
644 case 'm':
645 zo->zo_mirrors = value;
646 break;
647 case 'r':
648 zo->zo_raidz = MAX(1, value);
649 break;
650 case 'R':
651 zo->zo_raidz_parity = MIN(MAX(value, 1), 3);
652 break;
653 case 'd':
654 zo->zo_datasets = MAX(1, value);
655 break;
656 case 't':
657 zo->zo_threads = MAX(1, value);
658 break;
659 case 'g':
660 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1,
661 value);
662 break;
663 case 'i':
664 zo->zo_init = value;
665 break;
666 case 'k':
667 zo->zo_killrate = value;
668 break;
669 case 'p':
670 (void) strlcpy(zo->zo_pool, optarg,
671 sizeof (zo->zo_pool));
672 break;
673 case 'f':
674 path = realpath(optarg, NULL);
675 if (path == NULL) {
676 (void) fprintf(stderr, "error: %s: %s\n",
677 optarg, strerror(errno));
678 usage(B_FALSE);
679 } else {
680 (void) strlcpy(zo->zo_dir, path,
681 sizeof (zo->zo_dir));
682 }
683 break;
684 case 'V':
685 zo->zo_verbose++;
686 break;
687 case 'E':
688 zo->zo_init = 0;
689 break;
690 case 'T':
691 zo->zo_time = value;
692 break;
693 case 'P':
694 zo->zo_passtime = MAX(1, value);
695 break;
696 case 'F':
697 zo->zo_maxloops = MAX(1, value);
698 break;
699 case 'B':
700 (void) strlcpy(altdir, optarg, sizeof (altdir));
701 break;
702 case 'h':
703 usage(B_TRUE);
704 break;
705 case '?':
706 default:
707 usage(B_FALSE);
708 break;
709 }
710 }
711
712 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1);
713
714 zo->zo_vdevtime =
715 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
716 UINT64_MAX >> 2);
717
718 if (strlen(altdir) > 0) {
719 char *cmd;
720 char *realaltdir;
721 char *bin;
722 char *ztest;
723 char *isa;
724 int isalen;
725
726 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
727 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
728
729 VERIFY(NULL != realpath(getexecname(), cmd));
730 if (0 != access(altdir, F_OK)) {
731 ztest_dump_core = B_FALSE;
732 fatal(B_TRUE, "invalid alternate ztest path: %s",
733 altdir);
734 }
735 VERIFY(NULL != realpath(altdir, realaltdir));
736
737 /*
738 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest".
739 * We want to extract <isa> to determine if we should use
740 * 32 or 64 bit binaries.
741 */
742 bin = strstr(cmd, "/usr/bin/");
743 ztest = strstr(bin, "/ztest");
744 isa = bin + 9;
745 isalen = ztest - isa;
746 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest),
747 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa);
748 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath),
749 "%s/usr/lib/%.*s", realaltdir, isalen, isa);
750
751 if (0 != access(zo->zo_alt_ztest, X_OK)) {
752 ztest_dump_core = B_FALSE;
753 fatal(B_TRUE, "invalid alternate ztest: %s",
754 zo->zo_alt_ztest);
755 } else if (0 != access(zo->zo_alt_libpath, X_OK)) {
756 ztest_dump_core = B_FALSE;
757 fatal(B_TRUE, "invalid alternate lib directory %s",
758 zo->zo_alt_libpath);
759 }
760
761 umem_free(cmd, MAXPATHLEN);
762 umem_free(realaltdir, MAXPATHLEN);
763 }
764 }
765
766 static void
767 ztest_kill(ztest_shared_t *zs)
768 {
769 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
770 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
771
772 /*
773 * Before we kill off ztest, make sure that the config is updated.
774 * See comment above spa_config_sync().
775 */
776 mutex_enter(&spa_namespace_lock);
777 spa_config_sync(ztest_spa, B_FALSE, B_FALSE);
778 mutex_exit(&spa_namespace_lock);
779
780 zfs_dbgmsg_print(FTAG);
781 (void) kill(getpid(), SIGKILL);
782 }
783
784 static uint64_t
785 ztest_random(uint64_t range)
786 {
787 uint64_t r;
788
789 ASSERT3S(ztest_fd_rand, >=, 0);
790
791 if (range == 0)
792 return (0);
793
794 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
795 fatal(1, "short read from /dev/urandom");
796
797 return (r % range);
798 }
799
800 /* ARGSUSED */
801 static void
802 ztest_record_enospc(const char *s)
803 {
804 ztest_shared->zs_enospc_count++;
805 }
806
807 static uint64_t
808 ztest_get_ashift(void)
809 {
810 if (ztest_opts.zo_ashift == 0)
811 return (SPA_MINBLOCKSHIFT + ztest_random(3));
812 return (ztest_opts.zo_ashift);
813 }
814
815 static nvlist_t *
816 make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift)
817 {
818 char pathbuf[MAXPATHLEN];
819 uint64_t vdev;
820 nvlist_t *file;
821
822 if (ashift == 0)
823 ashift = ztest_get_ashift();
824
825 if (path == NULL) {
826 path = pathbuf;
827
828 if (aux != NULL) {
829 vdev = ztest_shared->zs_vdev_aux;
830 (void) snprintf(path, sizeof (pathbuf),
831 ztest_aux_template, ztest_opts.zo_dir,
832 pool == NULL ? ztest_opts.zo_pool : pool,
833 aux, vdev);
834 } else {
835 vdev = ztest_shared->zs_vdev_next_leaf++;
836 (void) snprintf(path, sizeof (pathbuf),
837 ztest_dev_template, ztest_opts.zo_dir,
838 pool == NULL ? ztest_opts.zo_pool : pool, vdev);
839 }
840 }
841
842 if (size != 0) {
843 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
844 if (fd == -1)
845 fatal(1, "can't open %s", path);
846 if (ftruncate(fd, size) != 0)
847 fatal(1, "can't ftruncate %s", path);
848 (void) close(fd);
849 }
850
851 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0);
852 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0);
853 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0);
854 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0);
855
856 return (file);
857 }
858
859 static nvlist_t *
860 make_vdev_raidz(char *path, char *aux, char *pool, size_t size,
861 uint64_t ashift, int r)
862 {
863 nvlist_t *raidz, **child;
864 int c;
865
866 if (r < 2)
867 return (make_vdev_file(path, aux, pool, size, ashift));
868 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
869
870 for (c = 0; c < r; c++)
871 child[c] = make_vdev_file(path, aux, pool, size, ashift);
872
873 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0);
874 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE,
875 VDEV_TYPE_RAIDZ) == 0);
876 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY,
877 ztest_opts.zo_raidz_parity) == 0);
878 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN,
879 child, r) == 0);
880
881 for (c = 0; c < r; c++)
882 nvlist_free(child[c]);
883
884 umem_free(child, r * sizeof (nvlist_t *));
885
886 return (raidz);
887 }
888
889 static nvlist_t *
890 make_vdev_mirror(char *path, char *aux, char *pool, size_t size,
891 uint64_t ashift, int r, int m)
892 {
893 nvlist_t *mirror, **child;
894 int c;
895
896 if (m < 1)
897 return (make_vdev_raidz(path, aux, pool, size, ashift, r));
898
899 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
900
901 for (c = 0; c < m; c++)
902 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r);
903
904 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0);
905 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE,
906 VDEV_TYPE_MIRROR) == 0);
907 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
908 child, m) == 0);
909
910 for (c = 0; c < m; c++)
911 nvlist_free(child[c]);
912
913 umem_free(child, m * sizeof (nvlist_t *));
914
915 return (mirror);
916 }
917
918 static nvlist_t *
919 make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift,
920 int log, int r, int m, int t)
921 {
922 nvlist_t *root, **child;
923 int c;
924
925 ASSERT(t > 0);
926
927 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
928
929 for (c = 0; c < t; c++) {
930 child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
931 r, m);
932 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
933 log) == 0);
934 }
935
936 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0);
937 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0);
938 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
939 child, t) == 0);
940
941 for (c = 0; c < t; c++)
942 nvlist_free(child[c]);
943
944 umem_free(child, t * sizeof (nvlist_t *));
945
946 return (root);
947 }
948
949 /*
950 * Find a random spa version. Returns back a random spa version in the
951 * range [initial_version, SPA_VERSION_FEATURES].
952 */
953 static uint64_t
954 ztest_random_spa_version(uint64_t initial_version)
955 {
956 uint64_t version = initial_version;
957
958 if (version <= SPA_VERSION_BEFORE_FEATURES) {
959 version = version +
960 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
961 }
962
963 if (version > SPA_VERSION_BEFORE_FEATURES)
964 version = SPA_VERSION_FEATURES;
965
966 ASSERT(SPA_VERSION_IS_SUPPORTED(version));
967 return (version);
968 }
969
970 static int
971 ztest_random_blocksize(void)
972 {
973 return (1 << (SPA_MINBLOCKSHIFT +
974 ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)));
975 }
976
977 static int
978 ztest_random_ibshift(void)
979 {
980 return (DN_MIN_INDBLKSHIFT +
981 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
982 }
983
984 static uint64_t
985 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
986 {
987 uint64_t top;
988 vdev_t *rvd = spa->spa_root_vdev;
989 vdev_t *tvd;
990
991 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
992
993 do {
994 top = ztest_random(rvd->vdev_children);
995 tvd = rvd->vdev_child[top];
996 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) ||
997 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
998
999 return (top);
1000 }
1001
1002 static uint64_t
1003 ztest_random_dsl_prop(zfs_prop_t prop)
1004 {
1005 uint64_t value;
1006
1007 do {
1008 value = zfs_prop_random_value(prop, ztest_random(-1ULL));
1009 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
1010
1011 return (value);
1012 }
1013
1014 static int
1015 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
1016 boolean_t inherit)
1017 {
1018 const char *propname = zfs_prop_to_name(prop);
1019 const char *valname;
1020 char setpoint[MAXPATHLEN];
1021 uint64_t curval;
1022 int error;
1023
1024 error = dsl_prop_set_int(osname, propname,
1025 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
1026
1027 if (error == ENOSPC) {
1028 ztest_record_enospc(FTAG);
1029 return (error);
1030 }
1031 ASSERT0(error);
1032
1033 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
1034
1035 if (ztest_opts.zo_verbose >= 6) {
1036 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
1037 (void) printf("%s %s = %s at '%s'\n",
1038 osname, propname, valname, setpoint);
1039 }
1040
1041 return (error);
1042 }
1043
1044 static int
1045 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
1046 {
1047 spa_t *spa = ztest_spa;
1048 nvlist_t *props = NULL;
1049 int error;
1050
1051 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
1052 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0);
1053
1054 error = spa_prop_set(spa, props);
1055
1056 nvlist_free(props);
1057
1058 if (error == ENOSPC) {
1059 ztest_record_enospc(FTAG);
1060 return (error);
1061 }
1062 ASSERT0(error);
1063
1064 return (error);
1065 }
1066
1067 static void
1068 ztest_rll_init(rll_t *rll)
1069 {
1070 rll->rll_writer = NULL;
1071 rll->rll_readers = 0;
1072 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0);
1073 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0);
1074 }
1075
1076 static void
1077 ztest_rll_destroy(rll_t *rll)
1078 {
1079 ASSERT(rll->rll_writer == NULL);
1080 ASSERT(rll->rll_readers == 0);
1081 VERIFY(_mutex_destroy(&rll->rll_lock) == 0);
1082 VERIFY(cond_destroy(&rll->rll_cv) == 0);
1083 }
1084
1085 static void
1086 ztest_rll_lock(rll_t *rll, rl_type_t type)
1087 {
1088 VERIFY(mutex_lock(&rll->rll_lock) == 0);
1089
1090 if (type == RL_READER) {
1091 while (rll->rll_writer != NULL)
1092 (void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1093 rll->rll_readers++;
1094 } else {
1095 while (rll->rll_writer != NULL || rll->rll_readers)
1096 (void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1097 rll->rll_writer = curthread;
1098 }
1099
1100 VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1101 }
1102
1103 static void
1104 ztest_rll_unlock(rll_t *rll)
1105 {
1106 VERIFY(mutex_lock(&rll->rll_lock) == 0);
1107
1108 if (rll->rll_writer) {
1109 ASSERT(rll->rll_readers == 0);
1110 rll->rll_writer = NULL;
1111 } else {
1112 ASSERT(rll->rll_readers != 0);
1113 ASSERT(rll->rll_writer == NULL);
1114 rll->rll_readers--;
1115 }
1116
1117 if (rll->rll_writer == NULL && rll->rll_readers == 0)
1118 VERIFY(cond_broadcast(&rll->rll_cv) == 0);
1119
1120 VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1121 }
1122
1123 static void
1124 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
1125 {
1126 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1127
1128 ztest_rll_lock(rll, type);
1129 }
1130
1131 static void
1132 ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
1133 {
1134 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1135
1136 ztest_rll_unlock(rll);
1137 }
1138
1139 static rl_t *
1140 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
1141 uint64_t size, rl_type_t type)
1142 {
1143 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
1144 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
1145 rl_t *rl;
1146
1147 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
1148 rl->rl_object = object;
1149 rl->rl_offset = offset;
1150 rl->rl_size = size;
1151 rl->rl_lock = rll;
1152
1153 ztest_rll_lock(rll, type);
1154
1155 return (rl);
1156 }
1157
1158 static void
1159 ztest_range_unlock(rl_t *rl)
1160 {
1161 rll_t *rll = rl->rl_lock;
1162
1163 ztest_rll_unlock(rll);
1164
1165 umem_free(rl, sizeof (*rl));
1166 }
1167
1168 static void
1169 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
1170 {
1171 zd->zd_os = os;
1172 zd->zd_zilog = dmu_objset_zil(os);
1173 zd->zd_shared = szd;
1174 dmu_objset_name(os, zd->zd_name);
1175
1176 if (zd->zd_shared != NULL)
1177 zd->zd_shared->zd_seq = 0;
1178
1179 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0);
1180 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0);
1181
1182 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1183 ztest_rll_init(&zd->zd_object_lock[l]);
1184
1185 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1186 ztest_rll_init(&zd->zd_range_lock[l]);
1187 }
1188
1189 static void
1190 ztest_zd_fini(ztest_ds_t *zd)
1191 {
1192 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0);
1193
1194 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1195 ztest_rll_destroy(&zd->zd_object_lock[l]);
1196
1197 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1198 ztest_rll_destroy(&zd->zd_range_lock[l]);
1199 }
1200
1201 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1202
1203 static uint64_t
1204 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1205 {
1206 uint64_t txg;
1207 int error;
1208
1209 /*
1210 * Attempt to assign tx to some transaction group.
1211 */
1212 error = dmu_tx_assign(tx, txg_how);
1213 if (error) {
1214 if (error == ERESTART) {
1215 ASSERT(txg_how == TXG_NOWAIT);
1216 dmu_tx_wait(tx);
1217 } else {
1218 ASSERT3U(error, ==, ENOSPC);
1219 ztest_record_enospc(tag);
1220 }
1221 dmu_tx_abort(tx);
1222 return (0);
1223 }
1224 txg = dmu_tx_get_txg(tx);
1225 ASSERT(txg != 0);
1226 return (txg);
1227 }
1228
1229 static void
1230 ztest_pattern_set(void *buf, uint64_t size, uint64_t value)
1231 {
1232 uint64_t *ip = buf;
1233 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1234
1235 while (ip < ip_end)
1236 *ip++ = value;
1237 }
1238
1239 static boolean_t
1240 ztest_pattern_match(void *buf, uint64_t size, uint64_t value)
1241 {
1242 uint64_t *ip = buf;
1243 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1244 uint64_t diff = 0;
1245
1246 while (ip < ip_end)
1247 diff |= (value - *ip++);
1248
1249 return (diff == 0);
1250 }
1251
1252 static void
1253 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1254 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1255 {
1256 bt->bt_magic = BT_MAGIC;
1257 bt->bt_objset = dmu_objset_id(os);
1258 bt->bt_object = object;
1259 bt->bt_offset = offset;
1260 bt->bt_gen = gen;
1261 bt->bt_txg = txg;
1262 bt->bt_crtxg = crtxg;
1263 }
1264
1265 static void
1266 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1267 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1268 {
1269 ASSERT3U(bt->bt_magic, ==, BT_MAGIC);
1270 ASSERT3U(bt->bt_objset, ==, dmu_objset_id(os));
1271 ASSERT3U(bt->bt_object, ==, object);
1272 ASSERT3U(bt->bt_offset, ==, offset);
1273 ASSERT3U(bt->bt_gen, <=, gen);
1274 ASSERT3U(bt->bt_txg, <=, txg);
1275 ASSERT3U(bt->bt_crtxg, ==, crtxg);
1276 }
1277
1278 static ztest_block_tag_t *
1279 ztest_bt_bonus(dmu_buf_t *db)
1280 {
1281 dmu_object_info_t doi;
1282 ztest_block_tag_t *bt;
1283
1284 dmu_object_info_from_db(db, &doi);
1285 ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1286 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1287 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1288
1289 return (bt);
1290 }
1291
1292 /*
1293 * ZIL logging ops
1294 */
1295
1296 #define lrz_type lr_mode
1297 #define lrz_blocksize lr_uid
1298 #define lrz_ibshift lr_gid
1299 #define lrz_bonustype lr_rdev
1300 #define lrz_bonuslen lr_crtime[1]
1301
1302 static void
1303 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1304 {
1305 char *name = (void *)(lr + 1); /* name follows lr */
1306 size_t namesize = strlen(name) + 1;
1307 itx_t *itx;
1308
1309 if (zil_replaying(zd->zd_zilog, tx))
1310 return;
1311
1312 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1313 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1314 sizeof (*lr) + namesize - sizeof (lr_t));
1315
1316 zil_itx_assign(zd->zd_zilog, itx, tx);
1317 }
1318
1319 static void
1320 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1321 {
1322 char *name = (void *)(lr + 1); /* name follows lr */
1323 size_t namesize = strlen(name) + 1;
1324 itx_t *itx;
1325
1326 if (zil_replaying(zd->zd_zilog, tx))
1327 return;
1328
1329 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1330 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1331 sizeof (*lr) + namesize - sizeof (lr_t));
1332
1333 itx->itx_oid = object;
1334 zil_itx_assign(zd->zd_zilog, itx, tx);
1335 }
1336
1337 static void
1338 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1339 {
1340 itx_t *itx;
1341 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1342
1343 if (zil_replaying(zd->zd_zilog, tx))
1344 return;
1345
1346 if (lr->lr_length > ZIL_MAX_LOG_DATA)
1347 write_state = WR_INDIRECT;
1348
1349 itx = zil_itx_create(TX_WRITE,
1350 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1351
1352 if (write_state == WR_COPIED &&
1353 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1354 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1355 zil_itx_destroy(itx);
1356 itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1357 write_state = WR_NEED_COPY;
1358 }
1359 itx->itx_private = zd;
1360 itx->itx_wr_state = write_state;
1361 itx->itx_sync = (ztest_random(8) == 0);
1362 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0);
1363
1364 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1365 sizeof (*lr) - sizeof (lr_t));
1366
1367 zil_itx_assign(zd->zd_zilog, itx, tx);
1368 }
1369
1370 static void
1371 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
1372 {
1373 itx_t *itx;
1374
1375 if (zil_replaying(zd->zd_zilog, tx))
1376 return;
1377
1378 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
1379 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1380 sizeof (*lr) - sizeof (lr_t));
1381
1382 itx->itx_sync = B_FALSE;
1383 zil_itx_assign(zd->zd_zilog, itx, tx);
1384 }
1385
1386 static void
1387 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
1388 {
1389 itx_t *itx;
1390
1391 if (zil_replaying(zd->zd_zilog, tx))
1392 return;
1393
1394 itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
1395 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1396 sizeof (*lr) - sizeof (lr_t));
1397
1398 itx->itx_sync = B_FALSE;
1399 zil_itx_assign(zd->zd_zilog, itx, tx);
1400 }
1401
1402 /*
1403 * ZIL replay ops
1404 */
1405 static int
1406 ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap)
1407 {
1408 char *name = (void *)(lr + 1); /* name follows lr */
1409 objset_t *os = zd->zd_os;
1410 ztest_block_tag_t *bbt;
1411 dmu_buf_t *db;
1412 dmu_tx_t *tx;
1413 uint64_t txg;
1414 int error = 0;
1415
1416 if (byteswap)
1417 byteswap_uint64_array(lr, sizeof (*lr));
1418
1419 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1420 ASSERT(name[0] != '\0');
1421
1422 tx = dmu_tx_create(os);
1423
1424 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
1425
1426 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1427 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
1428 } else {
1429 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1430 }
1431
1432 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1433 if (txg == 0)
1434 return (ENOSPC);
1435
1436 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid);
1437
1438 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1439 if (lr->lr_foid == 0) {
1440 lr->lr_foid = zap_create(os,
1441 lr->lrz_type, lr->lrz_bonustype,
1442 lr->lrz_bonuslen, tx);
1443 } else {
1444 error = zap_create_claim(os, lr->lr_foid,
1445 lr->lrz_type, lr->lrz_bonustype,
1446 lr->lrz_bonuslen, tx);
1447 }
1448 } else {
1449 if (lr->lr_foid == 0) {
1450 lr->lr_foid = dmu_object_alloc(os,
1451 lr->lrz_type, 0, lr->lrz_bonustype,
1452 lr->lrz_bonuslen, tx);
1453 } else {
1454 error = dmu_object_claim(os, lr->lr_foid,
1455 lr->lrz_type, 0, lr->lrz_bonustype,
1456 lr->lrz_bonuslen, tx);
1457 }
1458 }
1459
1460 if (error) {
1461 ASSERT3U(error, ==, EEXIST);
1462 ASSERT(zd->zd_zilog->zl_replay);
1463 dmu_tx_commit(tx);
1464 return (error);
1465 }
1466
1467 ASSERT(lr->lr_foid != 0);
1468
1469 if (lr->lrz_type != DMU_OT_ZAP_OTHER)
1470 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid,
1471 lr->lrz_blocksize, lr->lrz_ibshift, tx));
1472
1473 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1474 bbt = ztest_bt_bonus(db);
1475 dmu_buf_will_dirty(db, tx);
1476 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg);
1477 dmu_buf_rele(db, FTAG);
1478
1479 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
1480 &lr->lr_foid, tx));
1481
1482 (void) ztest_log_create(zd, tx, lr);
1483
1484 dmu_tx_commit(tx);
1485
1486 return (0);
1487 }
1488
1489 static int
1490 ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap)
1491 {
1492 char *name = (void *)(lr + 1); /* name follows lr */
1493 objset_t *os = zd->zd_os;
1494 dmu_object_info_t doi;
1495 dmu_tx_t *tx;
1496 uint64_t object, txg;
1497
1498 if (byteswap)
1499 byteswap_uint64_array(lr, sizeof (*lr));
1500
1501 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1502 ASSERT(name[0] != '\0');
1503
1504 VERIFY3U(0, ==,
1505 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
1506 ASSERT(object != 0);
1507
1508 ztest_object_lock(zd, object, RL_WRITER);
1509
1510 VERIFY3U(0, ==, dmu_object_info(os, object, &doi));
1511
1512 tx = dmu_tx_create(os);
1513
1514 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
1515 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
1516
1517 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1518 if (txg == 0) {
1519 ztest_object_unlock(zd, object);
1520 return (ENOSPC);
1521 }
1522
1523 if (doi.doi_type == DMU_OT_ZAP_OTHER) {
1524 VERIFY3U(0, ==, zap_destroy(os, object, tx));
1525 } else {
1526 VERIFY3U(0, ==, dmu_object_free(os, object, tx));
1527 }
1528
1529 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx));
1530
1531 (void) ztest_log_remove(zd, tx, lr, object);
1532
1533 dmu_tx_commit(tx);
1534
1535 ztest_object_unlock(zd, object);
1536
1537 return (0);
1538 }
1539
1540 static int
1541 ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap)
1542 {
1543 objset_t *os = zd->zd_os;
1544 void *data = lr + 1; /* data follows lr */
1545 uint64_t offset, length;
1546 ztest_block_tag_t *bt = data;
1547 ztest_block_tag_t *bbt;
1548 uint64_t gen, txg, lrtxg, crtxg;
1549 dmu_object_info_t doi;
1550 dmu_tx_t *tx;
1551 dmu_buf_t *db;
1552 arc_buf_t *abuf = NULL;
1553 rl_t *rl;
1554
1555 if (byteswap)
1556 byteswap_uint64_array(lr, sizeof (*lr));
1557
1558 offset = lr->lr_offset;
1559 length = lr->lr_length;
1560
1561 /* If it's a dmu_sync() block, write the whole block */
1562 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
1563 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
1564 if (length < blocksize) {
1565 offset -= offset % blocksize;
1566 length = blocksize;
1567 }
1568 }
1569
1570 if (bt->bt_magic == BSWAP_64(BT_MAGIC))
1571 byteswap_uint64_array(bt, sizeof (*bt));
1572
1573 if (bt->bt_magic != BT_MAGIC)
1574 bt = NULL;
1575
1576 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1577 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
1578
1579 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1580
1581 dmu_object_info_from_db(db, &doi);
1582
1583 bbt = ztest_bt_bonus(db);
1584 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1585 gen = bbt->bt_gen;
1586 crtxg = bbt->bt_crtxg;
1587 lrtxg = lr->lr_common.lrc_txg;
1588
1589 tx = dmu_tx_create(os);
1590
1591 dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
1592
1593 if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
1594 P2PHASE(offset, length) == 0)
1595 abuf = dmu_request_arcbuf(db, length);
1596
1597 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1598 if (txg == 0) {
1599 if (abuf != NULL)
1600 dmu_return_arcbuf(abuf);
1601 dmu_buf_rele(db, FTAG);
1602 ztest_range_unlock(rl);
1603 ztest_object_unlock(zd, lr->lr_foid);
1604 return (ENOSPC);
1605 }
1606
1607 if (bt != NULL) {
1608 /*
1609 * Usually, verify the old data before writing new data --
1610 * but not always, because we also want to verify correct
1611 * behavior when the data was not recently read into cache.
1612 */
1613 ASSERT(offset % doi.doi_data_block_size == 0);
1614 if (ztest_random(4) != 0) {
1615 int prefetch = ztest_random(2) ?
1616 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
1617 ztest_block_tag_t rbt;
1618
1619 VERIFY(dmu_read(os, lr->lr_foid, offset,
1620 sizeof (rbt), &rbt, prefetch) == 0);
1621 if (rbt.bt_magic == BT_MAGIC) {
1622 ztest_bt_verify(&rbt, os, lr->lr_foid,
1623 offset, gen, txg, crtxg);
1624 }
1625 }
1626
1627 /*
1628 * Writes can appear to be newer than the bonus buffer because
1629 * the ztest_get_data() callback does a dmu_read() of the
1630 * open-context data, which may be different than the data
1631 * as it was when the write was generated.
1632 */
1633 if (zd->zd_zilog->zl_replay) {
1634 ztest_bt_verify(bt, os, lr->lr_foid, offset,
1635 MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
1636 bt->bt_crtxg);
1637 }
1638
1639 /*
1640 * Set the bt's gen/txg to the bonus buffer's gen/txg
1641 * so that all of the usual ASSERTs will work.
1642 */
1643 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg);
1644 }
1645
1646 if (abuf == NULL) {
1647 dmu_write(os, lr->lr_foid, offset, length, data, tx);
1648 } else {
1649 bcopy(data, abuf->b_data, length);
1650 dmu_assign_arcbuf(db, offset, abuf, tx);
1651 }
1652
1653 (void) ztest_log_write(zd, tx, lr);
1654
1655 dmu_buf_rele(db, FTAG);
1656
1657 dmu_tx_commit(tx);
1658
1659 ztest_range_unlock(rl);
1660 ztest_object_unlock(zd, lr->lr_foid);
1661
1662 return (0);
1663 }
1664
1665 static int
1666 ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap)
1667 {
1668 objset_t *os = zd->zd_os;
1669 dmu_tx_t *tx;
1670 uint64_t txg;
1671 rl_t *rl;
1672
1673 if (byteswap)
1674 byteswap_uint64_array(lr, sizeof (*lr));
1675
1676 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1677 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
1678 RL_WRITER);
1679
1680 tx = dmu_tx_create(os);
1681
1682 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
1683
1684 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1685 if (txg == 0) {
1686 ztest_range_unlock(rl);
1687 ztest_object_unlock(zd, lr->lr_foid);
1688 return (ENOSPC);
1689 }
1690
1691 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
1692 lr->lr_length, tx) == 0);
1693
1694 (void) ztest_log_truncate(zd, tx, lr);
1695
1696 dmu_tx_commit(tx);
1697
1698 ztest_range_unlock(rl);
1699 ztest_object_unlock(zd, lr->lr_foid);
1700
1701 return (0);
1702 }
1703
1704 static int
1705 ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap)
1706 {
1707 objset_t *os = zd->zd_os;
1708 dmu_tx_t *tx;
1709 dmu_buf_t *db;
1710 ztest_block_tag_t *bbt;
1711 uint64_t txg, lrtxg, crtxg;
1712
1713 if (byteswap)
1714 byteswap_uint64_array(lr, sizeof (*lr));
1715
1716 ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
1717
1718 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1719
1720 tx = dmu_tx_create(os);
1721 dmu_tx_hold_bonus(tx, lr->lr_foid);
1722
1723 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1724 if (txg == 0) {
1725 dmu_buf_rele(db, FTAG);
1726 ztest_object_unlock(zd, lr->lr_foid);
1727 return (ENOSPC);
1728 }
1729
1730 bbt = ztest_bt_bonus(db);
1731 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1732 crtxg = bbt->bt_crtxg;
1733 lrtxg = lr->lr_common.lrc_txg;
1734
1735 if (zd->zd_zilog->zl_replay) {
1736 ASSERT(lr->lr_size != 0);
1737 ASSERT(lr->lr_mode != 0);
1738 ASSERT(lrtxg != 0);
1739 } else {
1740 /*
1741 * Randomly change the size and increment the generation.
1742 */
1743 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
1744 sizeof (*bbt);
1745 lr->lr_mode = bbt->bt_gen + 1;
1746 ASSERT(lrtxg == 0);
1747 }
1748
1749 /*
1750 * Verify that the current bonus buffer is not newer than our txg.
1751 */
1752 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode,
1753 MAX(txg, lrtxg), crtxg);
1754
1755 dmu_buf_will_dirty(db, tx);
1756
1757 ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
1758 ASSERT3U(lr->lr_size, <=, db->db_size);
1759 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
1760 bbt = ztest_bt_bonus(db);
1761
1762 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg);
1763
1764 dmu_buf_rele(db, FTAG);
1765
1766 (void) ztest_log_setattr(zd, tx, lr);
1767
1768 dmu_tx_commit(tx);
1769
1770 ztest_object_unlock(zd, lr->lr_foid);
1771
1772 return (0);
1773 }
1774
1775 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
1776 NULL, /* 0 no such transaction type */
1777 ztest_replay_create, /* TX_CREATE */
1778 NULL, /* TX_MKDIR */
1779 NULL, /* TX_MKXATTR */
1780 NULL, /* TX_SYMLINK */
1781 ztest_replay_remove, /* TX_REMOVE */
1782 NULL, /* TX_RMDIR */
1783 NULL, /* TX_LINK */
1784 NULL, /* TX_RENAME */
1785 ztest_replay_write, /* TX_WRITE */
1786 ztest_replay_truncate, /* TX_TRUNCATE */
1787 ztest_replay_setattr, /* TX_SETATTR */
1788 NULL, /* TX_ACL */
1789 NULL, /* TX_CREATE_ACL */
1790 NULL, /* TX_CREATE_ATTR */
1791 NULL, /* TX_CREATE_ACL_ATTR */
1792 NULL, /* TX_MKDIR_ACL */
1793 NULL, /* TX_MKDIR_ATTR */
1794 NULL, /* TX_MKDIR_ACL_ATTR */
1795 NULL, /* TX_WRITE2 */
1796 };
1797
1798 /*
1799 * ZIL get_data callbacks
1800 */
1801
1802 static void
1803 ztest_get_done(zgd_t *zgd, int error)
1804 {
1805 ztest_ds_t *zd = zgd->zgd_private;
1806 uint64_t object = zgd->zgd_rl->rl_object;
1807
1808 if (zgd->zgd_db)
1809 dmu_buf_rele(zgd->zgd_db, zgd);
1810
1811 ztest_range_unlock(zgd->zgd_rl);
1812 ztest_object_unlock(zd, object);
1813
1814 if (error == 0 && zgd->zgd_bp)
1815 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
1816
1817 umem_free(zgd, sizeof (*zgd));
1818 }
1819
1820 static int
1821 ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio)
1822 {
1823 ztest_ds_t *zd = arg;
1824 objset_t *os = zd->zd_os;
1825 uint64_t object = lr->lr_foid;
1826 uint64_t offset = lr->lr_offset;
1827 uint64_t size = lr->lr_length;
1828 blkptr_t *bp = &lr->lr_blkptr;
1829 uint64_t txg = lr->lr_common.lrc_txg;
1830 uint64_t crtxg;
1831 dmu_object_info_t doi;
1832 dmu_buf_t *db;
1833 zgd_t *zgd;
1834 int error;
1835
1836 ztest_object_lock(zd, object, RL_READER);
1837 error = dmu_bonus_hold(os, object, FTAG, &db);
1838 if (error) {
1839 ztest_object_unlock(zd, object);
1840 return (error);
1841 }
1842
1843 crtxg = ztest_bt_bonus(db)->bt_crtxg;
1844
1845 if (crtxg == 0 || crtxg > txg) {
1846 dmu_buf_rele(db, FTAG);
1847 ztest_object_unlock(zd, object);
1848 return (ENOENT);
1849 }
1850
1851 dmu_object_info_from_db(db, &doi);
1852 dmu_buf_rele(db, FTAG);
1853 db = NULL;
1854
1855 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
1856 zgd->zgd_zilog = zd->zd_zilog;
1857 zgd->zgd_private = zd;
1858
1859 if (buf != NULL) { /* immediate write */
1860 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1861 RL_READER);
1862
1863 error = dmu_read(os, object, offset, size, buf,
1864 DMU_READ_NO_PREFETCH);
1865 ASSERT(error == 0);
1866 } else {
1867 size = doi.doi_data_block_size;
1868 if (ISP2(size)) {
1869 offset = P2ALIGN(offset, size);
1870 } else {
1871 ASSERT(offset < size);
1872 offset = 0;
1873 }
1874
1875 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1876 RL_READER);
1877
1878 error = dmu_buf_hold(os, object, offset, zgd, &db,
1879 DMU_READ_NO_PREFETCH);
1880
1881 if (error == 0) {
1882 blkptr_t *obp = dmu_buf_get_blkptr(db);
1883 if (obp) {
1884 ASSERT(BP_IS_HOLE(bp));
1885 *bp = *obp;
1886 }
1887
1888 zgd->zgd_db = db;
1889 zgd->zgd_bp = bp;
1890
1891 ASSERT(db->db_offset == offset);
1892 ASSERT(db->db_size == size);
1893
1894 error = dmu_sync(zio, lr->lr_common.lrc_txg,
1895 ztest_get_done, zgd);
1896
1897 if (error == 0)
1898 return (0);
1899 }
1900 }
1901
1902 ztest_get_done(zgd, error);
1903
1904 return (error);
1905 }
1906
1907 static void *
1908 ztest_lr_alloc(size_t lrsize, char *name)
1909 {
1910 char *lr;
1911 size_t namesize = name ? strlen(name) + 1 : 0;
1912
1913 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
1914
1915 if (name)
1916 bcopy(name, lr + lrsize, namesize);
1917
1918 return (lr);
1919 }
1920
1921 void
1922 ztest_lr_free(void *lr, size_t lrsize, char *name)
1923 {
1924 size_t namesize = name ? strlen(name) + 1 : 0;
1925
1926 umem_free(lr, lrsize + namesize);
1927 }
1928
1929 /*
1930 * Lookup a bunch of objects. Returns the number of objects not found.
1931 */
1932 static int
1933 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
1934 {
1935 int missing = 0;
1936 int error;
1937
1938 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1939
1940 for (int i = 0; i < count; i++, od++) {
1941 od->od_object = 0;
1942 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
1943 sizeof (uint64_t), 1, &od->od_object);
1944 if (error) {
1945 ASSERT(error == ENOENT);
1946 ASSERT(od->od_object == 0);
1947 missing++;
1948 } else {
1949 dmu_buf_t *db;
1950 ztest_block_tag_t *bbt;
1951 dmu_object_info_t doi;
1952
1953 ASSERT(od->od_object != 0);
1954 ASSERT(missing == 0); /* there should be no gaps */
1955
1956 ztest_object_lock(zd, od->od_object, RL_READER);
1957 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
1958 od->od_object, FTAG, &db));
1959 dmu_object_info_from_db(db, &doi);
1960 bbt = ztest_bt_bonus(db);
1961 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1962 od->od_type = doi.doi_type;
1963 od->od_blocksize = doi.doi_data_block_size;
1964 od->od_gen = bbt->bt_gen;
1965 dmu_buf_rele(db, FTAG);
1966 ztest_object_unlock(zd, od->od_object);
1967 }
1968 }
1969
1970 return (missing);
1971 }
1972
1973 static int
1974 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
1975 {
1976 int missing = 0;
1977
1978 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1979
1980 for (int i = 0; i < count; i++, od++) {
1981 if (missing) {
1982 od->od_object = 0;
1983 missing++;
1984 continue;
1985 }
1986
1987 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
1988
1989 lr->lr_doid = od->od_dir;
1990 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */
1991 lr->lrz_type = od->od_crtype;
1992 lr->lrz_blocksize = od->od_crblocksize;
1993 lr->lrz_ibshift = ztest_random_ibshift();
1994 lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
1995 lr->lrz_bonuslen = dmu_bonus_max();
1996 lr->lr_gen = od->od_crgen;
1997 lr->lr_crtime[0] = time(NULL);
1998
1999 if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
2000 ASSERT(missing == 0);
2001 od->od_object = 0;
2002 missing++;
2003 } else {
2004 od->od_object = lr->lr_foid;
2005 od->od_type = od->od_crtype;
2006 od->od_blocksize = od->od_crblocksize;
2007 od->od_gen = od->od_crgen;
2008 ASSERT(od->od_object != 0);
2009 }
2010
2011 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2012 }
2013
2014 return (missing);
2015 }
2016
2017 static int
2018 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
2019 {
2020 int missing = 0;
2021 int error;
2022
2023 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
2024
2025 od += count - 1;
2026
2027 for (int i = count - 1; i >= 0; i--, od--) {
2028 if (missing) {
2029 missing++;
2030 continue;
2031 }
2032
2033 /*
2034 * No object was found.
2035 */
2036 if (od->od_object == 0)
2037 continue;
2038
2039 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2040
2041 lr->lr_doid = od->od_dir;
2042
2043 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
2044 ASSERT3U(error, ==, ENOSPC);
2045 missing++;
2046 } else {
2047 od->od_object = 0;
2048 }
2049 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2050 }
2051
2052 return (missing);
2053 }
2054
2055 static int
2056 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
2057 void *data)
2058 {
2059 lr_write_t *lr;
2060 int error;
2061
2062 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
2063
2064 lr->lr_foid = object;
2065 lr->lr_offset = offset;
2066 lr->lr_length = size;
2067 lr->lr_blkoff = 0;
2068 BP_ZERO(&lr->lr_blkptr);
2069
2070 bcopy(data, lr + 1, size);
2071
2072 error = ztest_replay_write(zd, lr, B_FALSE);
2073
2074 ztest_lr_free(lr, sizeof (*lr) + size, NULL);
2075
2076 return (error);
2077 }
2078
2079 static int
2080 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2081 {
2082 lr_truncate_t *lr;
2083 int error;
2084
2085 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2086
2087 lr->lr_foid = object;
2088 lr->lr_offset = offset;
2089 lr->lr_length = size;
2090
2091 error = ztest_replay_truncate(zd, lr, B_FALSE);
2092
2093 ztest_lr_free(lr, sizeof (*lr), NULL);
2094
2095 return (error);
2096 }
2097
2098 static int
2099 ztest_setattr(ztest_ds_t *zd, uint64_t object)
2100 {
2101 lr_setattr_t *lr;
2102 int error;
2103
2104 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2105
2106 lr->lr_foid = object;
2107 lr->lr_size = 0;
2108 lr->lr_mode = 0;
2109
2110 error = ztest_replay_setattr(zd, lr, B_FALSE);
2111
2112 ztest_lr_free(lr, sizeof (*lr), NULL);
2113
2114 return (error);
2115 }
2116
2117 static void
2118 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2119 {
2120 objset_t *os = zd->zd_os;
2121 dmu_tx_t *tx;
2122 uint64_t txg;
2123 rl_t *rl;
2124
2125 txg_wait_synced(dmu_objset_pool(os), 0);
2126
2127 ztest_object_lock(zd, object, RL_READER);
2128 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
2129
2130 tx = dmu_tx_create(os);
2131
2132 dmu_tx_hold_write(tx, object, offset, size);
2133
2134 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2135
2136 if (txg != 0) {
2137 dmu_prealloc(os, object, offset, size, tx);
2138 dmu_tx_commit(tx);
2139 txg_wait_synced(dmu_objset_pool(os), txg);
2140 } else {
2141 (void) dmu_free_long_range(os, object, offset, size);
2142 }
2143
2144 ztest_range_unlock(rl);
2145 ztest_object_unlock(zd, object);
2146 }
2147
2148 static void
2149 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
2150 {
2151 int err;
2152 ztest_block_tag_t wbt;
2153 dmu_object_info_t doi;
2154 enum ztest_io_type io_type;
2155 uint64_t blocksize;
2156 void *data;
2157
2158 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0);
2159 blocksize = doi.doi_data_block_size;
2160 data = umem_alloc(blocksize, UMEM_NOFAIL);
2161
2162 /*
2163 * Pick an i/o type at random, biased toward writing block tags.
2164 */
2165 io_type = ztest_random(ZTEST_IO_TYPES);
2166 if (ztest_random(2) == 0)
2167 io_type = ZTEST_IO_WRITE_TAG;
2168
2169 (void) rw_rdlock(&zd->zd_zilog_lock);
2170
2171 switch (io_type) {
2172
2173 case ZTEST_IO_WRITE_TAG:
2174 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0);
2175 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
2176 break;
2177
2178 case ZTEST_IO_WRITE_PATTERN:
2179 (void) memset(data, 'a' + (object + offset) % 5, blocksize);
2180 if (ztest_random(2) == 0) {
2181 /*
2182 * Induce fletcher2 collisions to ensure that
2183 * zio_ddt_collision() detects and resolves them
2184 * when using fletcher2-verify for deduplication.
2185 */
2186 ((uint64_t *)data)[0] ^= 1ULL << 63;
2187 ((uint64_t *)data)[4] ^= 1ULL << 63;
2188 }
2189 (void) ztest_write(zd, object, offset, blocksize, data);
2190 break;
2191
2192 case ZTEST_IO_WRITE_ZEROES:
2193 bzero(data, blocksize);
2194 (void) ztest_write(zd, object, offset, blocksize, data);
2195 break;
2196
2197 case ZTEST_IO_TRUNCATE:
2198 (void) ztest_truncate(zd, object, offset, blocksize);
2199 break;
2200
2201 case ZTEST_IO_SETATTR:
2202 (void) ztest_setattr(zd, object);
2203 break;
2204
2205 case ZTEST_IO_REWRITE:
2206 (void) rw_rdlock(&ztest_name_lock);
2207 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2208 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
2209 B_FALSE);
2210 VERIFY(err == 0 || err == ENOSPC);
2211 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2212 ZFS_PROP_COMPRESSION,
2213 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
2214 B_FALSE);
2215 VERIFY(err == 0 || err == ENOSPC);
2216 (void) rw_unlock(&ztest_name_lock);
2217
2218 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
2219 DMU_READ_NO_PREFETCH));
2220
2221 (void) ztest_write(zd, object, offset, blocksize, data);
2222 break;
2223 }
2224
2225 (void) rw_unlock(&zd->zd_zilog_lock);
2226
2227 umem_free(data, blocksize);
2228 }
2229
2230 /*
2231 * Initialize an object description template.
2232 */
2233 static void
2234 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index,
2235 dmu_object_type_t type, uint64_t blocksize, uint64_t gen)
2236 {
2237 od->od_dir = ZTEST_DIROBJ;
2238 od->od_object = 0;
2239
2240 od->od_crtype = type;
2241 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2242 od->od_crgen = gen;
2243
2244 od->od_type = DMU_OT_NONE;
2245 od->od_blocksize = 0;
2246 od->od_gen = 0;
2247
2248 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]",
2249 tag, (int64_t)id, index);
2250 }
2251
2252 /*
2253 * Lookup or create the objects for a test using the od template.
2254 * If the objects do not all exist, or if 'remove' is specified,
2255 * remove any existing objects and create new ones. Otherwise,
2256 * use the existing objects.
2257 */
2258 static int
2259 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2260 {
2261 int count = size / sizeof (*od);
2262 int rv = 0;
2263
2264 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0);
2265 if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2266 (ztest_remove(zd, od, count) != 0 ||
2267 ztest_create(zd, od, count) != 0))
2268 rv = -1;
2269 zd->zd_od = od;
2270 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2271
2272 return (rv);
2273 }
2274
2275 /* ARGSUSED */
2276 void
2277 ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2278 {
2279 zilog_t *zilog = zd->zd_zilog;
2280
2281 (void) rw_rdlock(&zd->zd_zilog_lock);
2282
2283 zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2284
2285 /*
2286 * Remember the committed values in zd, which is in parent/child
2287 * shared memory. If we die, the next iteration of ztest_run()
2288 * will verify that the log really does contain this record.
2289 */
2290 mutex_enter(&zilog->zl_lock);
2291 ASSERT(zd->zd_shared != NULL);
2292 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
2293 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
2294 mutex_exit(&zilog->zl_lock);
2295
2296 (void) rw_unlock(&zd->zd_zilog_lock);
2297 }
2298
2299 /*
2300 * This function is designed to simulate the operations that occur during a
2301 * mount/unmount operation. We hold the dataset across these operations in an
2302 * attempt to expose any implicit assumptions about ZIL management.
2303 */
2304 /* ARGSUSED */
2305 void
2306 ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
2307 {
2308 objset_t *os = zd->zd_os;
2309
2310 /*
2311 * We grab the zd_dirobj_lock to ensure that no other thread is
2312 * updating the zil (i.e. adding in-memory log records) and the
2313 * zd_zilog_lock to block any I/O.
2314 */
2315 VERIFY0(mutex_lock(&zd->zd_dirobj_lock));
2316 (void) rw_wrlock(&zd->zd_zilog_lock);
2317
2318 /* zfsvfs_teardown() */
2319 zil_close(zd->zd_zilog);
2320
2321 /* zfsvfs_setup() */
2322 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog);
2323 zil_replay(os, zd, ztest_replay_vector);
2324
2325 (void) rw_unlock(&zd->zd_zilog_lock);
2326 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2327 }
2328
2329 /*
2330 * Verify that we can't destroy an active pool, create an existing pool,
2331 * or create a pool with a bad vdev spec.
2332 */
2333 /* ARGSUSED */
2334 void
2335 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
2336 {
2337 ztest_shared_opts_t *zo = &ztest_opts;
2338 spa_t *spa;
2339 nvlist_t *nvroot;
2340
2341 /*
2342 * Attempt to create using a bad file.
2343 */
2344 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
2345 VERIFY3U(ENOENT, ==,
2346 spa_create("ztest_bad_file", nvroot, NULL, NULL));
2347 nvlist_free(nvroot);
2348
2349 /*
2350 * Attempt to create using a bad mirror.
2351 */
2352 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1);
2353 VERIFY3U(ENOENT, ==,
2354 spa_create("ztest_bad_mirror", nvroot, NULL, NULL));
2355 nvlist_free(nvroot);
2356
2357 /*
2358 * Attempt to create an existing pool. It shouldn't matter
2359 * what's in the nvroot; we should fail with EEXIST.
2360 */
2361 (void) rw_rdlock(&ztest_name_lock);
2362 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
2363 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL));
2364 nvlist_free(nvroot);
2365 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG));
2366 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
2367 spa_close(spa, FTAG);
2368
2369 (void) rw_unlock(&ztest_name_lock);
2370 }
2371
2372 /* ARGSUSED */
2373 void
2374 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
2375 {
2376 spa_t *spa;
2377 uint64_t initial_version = SPA_VERSION_INITIAL;
2378 uint64_t version, newversion;
2379 nvlist_t *nvroot, *props;
2380 char *name;
2381
2382 VERIFY0(mutex_lock(&ztest_vdev_lock));
2383 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
2384
2385 /*
2386 * Clean up from previous runs.
2387 */
2388 (void) spa_destroy(name);
2389
2390 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
2391 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1);
2392
2393 /*
2394 * If we're configuring a RAIDZ device then make sure that the
2395 * the initial version is capable of supporting that feature.
2396 */
2397 switch (ztest_opts.zo_raidz_parity) {
2398 case 0:
2399 case 1:
2400 initial_version = SPA_VERSION_INITIAL;
2401 break;
2402 case 2:
2403 initial_version = SPA_VERSION_RAIDZ2;
2404 break;
2405 case 3:
2406 initial_version = SPA_VERSION_RAIDZ3;
2407 break;
2408 }
2409
2410 /*
2411 * Create a pool with a spa version that can be upgraded. Pick
2412 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
2413 */
2414 do {
2415 version = ztest_random_spa_version(initial_version);
2416 } while (version > SPA_VERSION_BEFORE_FEATURES);
2417
2418 props = fnvlist_alloc();
2419 fnvlist_add_uint64(props,
2420 zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
2421 VERIFY0(spa_create(name, nvroot, props, NULL));
2422 fnvlist_free(nvroot);
2423 fnvlist_free(props);
2424
2425 VERIFY0(spa_open(name, &spa, FTAG));
2426 VERIFY3U(spa_version(spa), ==, version);
2427 newversion = ztest_random_spa_version(version + 1);
2428
2429 if (ztest_opts.zo_verbose >= 4) {
2430 (void) printf("upgrading spa version from %llu to %llu\n",
2431 (u_longlong_t)version, (u_longlong_t)newversion);
2432 }
2433
2434 spa_upgrade(spa, newversion);
2435 VERIFY3U(spa_version(spa), >, version);
2436 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
2437 zpool_prop_to_name(ZPOOL_PROP_VERSION)));
2438 spa_close(spa, FTAG);
2439
2440 strfree(name);
2441 VERIFY0(mutex_unlock(&ztest_vdev_lock));
2442 }
2443
2444 static vdev_t *
2445 vdev_lookup_by_path(vdev_t *vd, const char *path)
2446 {
2447 vdev_t *mvd;
2448
2449 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
2450 return (vd);
2451
2452 for (int c = 0; c < vd->vdev_children; c++)
2453 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
2454 NULL)
2455 return (mvd);
2456
2457 return (NULL);
2458 }
2459
2460 /*
2461 * Find the first available hole which can be used as a top-level.
2462 */
2463 int
2464 find_vdev_hole(spa_t *spa)
2465 {
2466 vdev_t *rvd = spa->spa_root_vdev;
2467 int c;
2468
2469 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV);
2470
2471 for (c = 0; c < rvd->vdev_children; c++) {
2472 vdev_t *cvd = rvd->vdev_child[c];
2473
2474 if (cvd->vdev_ishole)
2475 break;
2476 }
2477 return (c);
2478 }
2479
2480 /*
2481 * Verify that vdev_add() works as expected.
2482 */
2483 /* ARGSUSED */
2484 void
2485 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
2486 {
2487 ztest_shared_t *zs = ztest_shared;
2488 spa_t *spa = ztest_spa;
2489 uint64_t leaves;
2490 uint64_t guid;
2491 nvlist_t *nvroot;
2492 int error;
2493
2494 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2495 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
2496
2497 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2498
2499 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves;
2500
2501 /*
2502 * If we have slogs then remove them 1/4 of the time.
2503 */
2504 if (spa_has_slogs(spa) && ztest_random(4) == 0) {
2505 /*
2506 * Grab the guid from the head of the log class rotor.
2507 */
2508 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid;
2509
2510 spa_config_exit(spa, SCL_VDEV, FTAG);
2511
2512 /*
2513 * We have to grab the zs_name_lock as writer to
2514 * prevent a race between removing a slog (dmu_objset_find)
2515 * and destroying a dataset. Removing the slog will
2516 * grab a reference on the dataset which may cause
2517 * dmu_objset_destroy() to fail with EBUSY thus
2518 * leaving the dataset in an inconsistent state.
2519 */
2520 VERIFY(rw_wrlock(&ztest_name_lock) == 0);
2521 error = spa_vdev_remove(spa, guid, B_FALSE);
2522 VERIFY(rw_unlock(&ztest_name_lock) == 0);
2523
2524 if (error && error != EEXIST)
2525 fatal(0, "spa_vdev_remove() = %d", error);
2526 } else {
2527 spa_config_exit(spa, SCL_VDEV, FTAG);
2528
2529 /*
2530 * Make 1/4 of the devices be log devices.
2531 */
2532 nvroot = make_vdev_root(NULL, NULL, NULL,
2533 ztest_opts.zo_vdev_size, 0,
2534 ztest_random(4) == 0, ztest_opts.zo_raidz,
2535 zs->zs_mirrors, 1);
2536
2537 error = spa_vdev_add(spa, nvroot);
2538 nvlist_free(nvroot);
2539
2540 if (error == ENOSPC)
2541 ztest_record_enospc("spa_vdev_add");
2542 else if (error != 0)
2543 fatal(0, "spa_vdev_add() = %d", error);
2544 }
2545
2546 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2547 }
2548
2549 /*
2550 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
2551 */
2552 /* ARGSUSED */
2553 void
2554 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
2555 {
2556 ztest_shared_t *zs = ztest_shared;
2557 spa_t *spa = ztest_spa;
2558 vdev_t *rvd = spa->spa_root_vdev;
2559 spa_aux_vdev_t *sav;
2560 char *aux;
2561 uint64_t guid = 0;
2562 int error;
2563
2564 if (ztest_random(2) == 0) {
2565 sav = &spa->spa_spares;
2566 aux = ZPOOL_CONFIG_SPARES;
2567 } else {
2568 sav = &spa->spa_l2cache;
2569 aux = ZPOOL_CONFIG_L2CACHE;
2570 }
2571
2572 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2573
2574 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2575
2576 if (sav->sav_count != 0 && ztest_random(4) == 0) {
2577 /*
2578 * Pick a random device to remove.
2579 */
2580 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid;
2581 } else {
2582 /*
2583 * Find an unused device we can add.
2584 */
2585 zs->zs_vdev_aux = 0;
2586 for (;;) {
2587 char path[MAXPATHLEN];
2588 int c;
2589 (void) snprintf(path, sizeof (path), ztest_aux_template,
2590 ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
2591 zs->zs_vdev_aux);
2592 for (c = 0; c < sav->sav_count; c++)
2593 if (strcmp(sav->sav_vdevs[c]->vdev_path,
2594 path) == 0)
2595 break;
2596 if (c == sav->sav_count &&
2597 vdev_lookup_by_path(rvd, path) == NULL)
2598 break;
2599 zs->zs_vdev_aux++;
2600 }
2601 }
2602
2603 spa_config_exit(spa, SCL_VDEV, FTAG);
2604
2605 if (guid == 0) {
2606 /*
2607 * Add a new device.
2608 */
2609 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL,
2610 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1);
2611 error = spa_vdev_add(spa, nvroot);
2612 if (error != 0)
2613 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error);
2614 nvlist_free(nvroot);
2615 } else {
2616 /*
2617 * Remove an existing device. Sometimes, dirty its
2618 * vdev state first to make sure we handle removal
2619 * of devices that have pending state changes.
2620 */
2621 if (ztest_random(2) == 0)
2622 (void) vdev_online(spa, guid, 0, NULL);
2623
2624 error = spa_vdev_remove(spa, guid, B_FALSE);
2625 if (error != 0 && error != EBUSY)
2626 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
2627 }
2628
2629 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2630 }
2631
2632 /*
2633 * split a pool if it has mirror tlvdevs
2634 */
2635 /* ARGSUSED */
2636 void
2637 ztest_split_pool(ztest_ds_t *zd, uint64_t id)
2638 {
2639 ztest_shared_t *zs = ztest_shared;
2640 spa_t *spa = ztest_spa;
2641 vdev_t *rvd = spa->spa_root_vdev;
2642 nvlist_t *tree, **child, *config, *split, **schild;
2643 uint_t c, children, schildren = 0, lastlogid = 0;
2644 int error = 0;
2645
2646 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2647
2648 /* ensure we have a useable config; mirrors of raidz aren't supported */
2649 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) {
2650 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2651 return;
2652 }
2653
2654 /* clean up the old pool, if any */
2655 (void) spa_destroy("splitp");
2656
2657 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2658
2659 /* generate a config from the existing config */
2660 mutex_enter(&spa->spa_props_lock);
2661 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE,
2662 &tree) == 0);
2663 mutex_exit(&spa->spa_props_lock);
2664
2665 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
2666 &children) == 0);
2667
2668 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *));
2669 for (c = 0; c < children; c++) {
2670 vdev_t *tvd = rvd->vdev_child[c];
2671 nvlist_t **mchild;
2672 uint_t mchildren;
2673
2674 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
2675 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME,
2676 0) == 0);
2677 VERIFY(nvlist_add_string(schild[schildren],
2678 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0);
2679 VERIFY(nvlist_add_uint64(schild[schildren],
2680 ZPOOL_CONFIG_IS_HOLE, 1) == 0);
2681 if (lastlogid == 0)
2682 lastlogid = schildren;
2683 ++schildren;
2684 continue;
2685 }
2686 lastlogid = 0;
2687 VERIFY(nvlist_lookup_nvlist_array(child[c],
2688 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
2689 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0);
2690 }
2691
2692 /* OK, create a config that can be used to split */
2693 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0);
2694 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE,
2695 VDEV_TYPE_ROOT) == 0);
2696 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild,
2697 lastlogid != 0 ? lastlogid : schildren) == 0);
2698
2699 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0);
2700 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0);
2701
2702 for (c = 0; c < schildren; c++)
2703 nvlist_free(schild[c]);
2704 free(schild);
2705 nvlist_free(split);
2706
2707 spa_config_exit(spa, SCL_VDEV, FTAG);
2708
2709 (void) rw_wrlock(&ztest_name_lock);
2710 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
2711 (void) rw_unlock(&ztest_name_lock);
2712
2713 nvlist_free(config);
2714
2715 if (error == 0) {
2716 (void) printf("successful split - results:\n");
2717 mutex_enter(&spa_namespace_lock);
2718 show_pool_stats(spa);
2719 show_pool_stats(spa_lookup("splitp"));
2720 mutex_exit(&spa_namespace_lock);
2721 ++zs->zs_splits;
2722 --zs->zs_mirrors;
2723 }
2724 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2725
2726 }
2727
2728 /*
2729 * Verify that we can attach and detach devices.
2730 */
2731 /* ARGSUSED */
2732 void
2733 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
2734 {
2735 ztest_shared_t *zs = ztest_shared;
2736 spa_t *spa = ztest_spa;
2737 spa_aux_vdev_t *sav = &spa->spa_spares;
2738 vdev_t *rvd = spa->spa_root_vdev;
2739 vdev_t *oldvd, *newvd, *pvd;
2740 nvlist_t *root;
2741 uint64_t leaves;
2742 uint64_t leaf, top;
2743 uint64_t ashift = ztest_get_ashift();
2744 uint64_t oldguid, pguid;
2745 uint64_t oldsize, newsize;
2746 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN];
2747 int replacing;
2748 int oldvd_has_siblings = B_FALSE;
2749 int newvd_is_spare = B_FALSE;
2750 int oldvd_is_log;
2751 int error, expected_error;
2752
2753 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2754 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
2755
2756 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2757
2758 /*
2759 * Decide whether to do an attach or a replace.
2760 */
2761 replacing = ztest_random(2);
2762
2763 /*
2764 * Pick a random top-level vdev.
2765 */
2766 top = ztest_random_vdev_top(spa, B_TRUE);
2767
2768 /*
2769 * Pick a random leaf within it.
2770 */
2771 leaf = ztest_random(leaves);
2772
2773 /*
2774 * Locate this vdev.
2775 */
2776 oldvd = rvd->vdev_child[top];
2777 if (zs->zs_mirrors >= 1) {
2778 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);
2779 ASSERT(oldvd->vdev_children >= zs->zs_mirrors);
2780 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz];
2781 }
2782 if (ztest_opts.zo_raidz > 1) {
2783 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);
2784 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz);
2785 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz];
2786 }
2787
2788 /*
2789 * If we're already doing an attach or replace, oldvd may be a
2790 * mirror vdev -- in which case, pick a random child.
2791 */
2792 while (oldvd->vdev_children != 0) {
2793 oldvd_has_siblings = B_TRUE;
2794 ASSERT(oldvd->vdev_children >= 2);
2795 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
2796 }
2797
2798 oldguid = oldvd->vdev_guid;
2799 oldsize = vdev_get_min_asize(oldvd);
2800 oldvd_is_log = oldvd->vdev_top->vdev_islog;
2801 (void) strcpy(oldpath, oldvd->vdev_path);
2802 pvd = oldvd->vdev_parent;
2803 pguid = pvd->vdev_guid;
2804
2805 /*
2806 * If oldvd has siblings, then half of the time, detach it.
2807 */
2808 if (oldvd_has_siblings && ztest_random(2) == 0) {
2809 spa_config_exit(spa, SCL_VDEV, FTAG);
2810 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
2811 if (error != 0 && error != ENODEV && error != EBUSY &&
2812 error != ENOTSUP)
2813 fatal(0, "detach (%s) returned %d", oldpath, error);
2814 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2815 return;
2816 }
2817
2818 /*
2819 * For the new vdev, choose with equal probability between the two
2820 * standard paths (ending in either 'a' or 'b') or a random hot spare.
2821 */
2822 if (sav->sav_count != 0 && ztest_random(3) == 0) {
2823 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
2824 newvd_is_spare = B_TRUE;
2825 (void) strcpy(newpath, newvd->vdev_path);
2826 } else {
2827 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template,
2828 ztest_opts.zo_dir, ztest_opts.zo_pool,
2829 top * leaves + leaf);
2830 if (ztest_random(2) == 0)
2831 newpath[strlen(newpath) - 1] = 'b';
2832 newvd = vdev_lookup_by_path(rvd, newpath);
2833 }
2834
2835 if (newvd) {
2836 newsize = vdev_get_min_asize(newvd);
2837 } else {
2838 /*
2839 * Make newsize a little bigger or smaller than oldsize.
2840 * If it's smaller, the attach should fail.
2841 * If it's larger, and we're doing a replace,
2842 * we should get dynamic LUN growth when we're done.
2843 */
2844 newsize = 10 * oldsize / (9 + ztest_random(3));
2845 }
2846
2847 /*
2848 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
2849 * unless it's a replace; in that case any non-replacing parent is OK.
2850 *
2851 * If newvd is already part of the pool, it should fail with EBUSY.
2852 *
2853 * If newvd is too small, it should fail with EOVERFLOW.
2854 */
2855 if (pvd->vdev_ops != &vdev_mirror_ops &&
2856 pvd->vdev_ops != &vdev_root_ops && (!replacing ||
2857 pvd->vdev_ops == &vdev_replacing_ops ||
2858 pvd->vdev_ops == &vdev_spare_ops))
2859 expected_error = ENOTSUP;
2860 else if (newvd_is_spare && (!replacing || oldvd_is_log))
2861 expected_error = ENOTSUP;
2862 else if (newvd == oldvd)
2863 expected_error = replacing ? 0 : EBUSY;
2864 else if (vdev_lookup_by_path(rvd, newpath) != NULL)
2865 expected_error = EBUSY;
2866 else if (newsize < oldsize)
2867 expected_error = EOVERFLOW;
2868 else if (ashift > oldvd->vdev_top->vdev_ashift)
2869 expected_error = EDOM;
2870 else
2871 expected_error = 0;
2872
2873 spa_config_exit(spa, SCL_VDEV, FTAG);
2874
2875 /*
2876 * Build the nvlist describing newpath.
2877 */
2878 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
2879 ashift, 0, 0, 0, 1);
2880
2881 error = spa_vdev_attach(spa, oldguid, root, replacing);
2882
2883 nvlist_free(root);
2884
2885 /*
2886 * If our parent was the replacing vdev, but the replace completed,
2887 * then instead of failing with ENOTSUP we may either succeed,
2888 * fail with ENODEV, or fail with EOVERFLOW.
2889 */
2890 if (expected_error == ENOTSUP &&
2891 (error == 0 || error == ENODEV || error == EOVERFLOW))
2892 expected_error = error;
2893
2894 /*
2895 * If someone grew the LUN, the replacement may be too small.
2896 */
2897 if (error == EOVERFLOW || error == EBUSY)
2898 expected_error = error;
2899
2900 /* XXX workaround 6690467 */
2901 if (error != expected_error && expected_error != EBUSY) {
2902 fatal(0, "attach (%s %llu, %s %llu, %d) "
2903 "returned %d, expected %d",
2904 oldpath, oldsize, newpath,
2905 newsize, replacing, error, expected_error);
2906 }
2907
2908 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2909 }
2910
2911 /*
2912 * Callback function which expands the physical size of the vdev.
2913 */
2914 vdev_t *
2915 grow_vdev(vdev_t *vd, void *arg)
2916 {
2917 spa_t *spa = vd->vdev_spa;
2918 size_t *newsize = arg;
2919 size_t fsize;
2920 int fd;
2921
2922 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2923 ASSERT(vd->vdev_ops->vdev_op_leaf);
2924
2925 if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
2926 return (vd);
2927
2928 fsize = lseek(fd, 0, SEEK_END);
2929 (void) ftruncate(fd, *newsize);
2930
2931 if (ztest_opts.zo_verbose >= 6) {
2932 (void) printf("%s grew from %lu to %lu bytes\n",
2933 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
2934 }
2935 (void) close(fd);
2936 return (NULL);
2937 }
2938
2939 /*
2940 * Callback function which expands a given vdev by calling vdev_online().
2941 */
2942 /* ARGSUSED */
2943 vdev_t *
2944 online_vdev(vdev_t *vd, void *arg)
2945 {
2946 spa_t *spa = vd->vdev_spa;
2947 vdev_t *tvd = vd->vdev_top;
2948 uint64_t guid = vd->vdev_guid;
2949 uint64_t generation = spa->spa_config_generation + 1;
2950 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
2951 int error;
2952
2953 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2954 ASSERT(vd->vdev_ops->vdev_op_leaf);
2955
2956 /* Calling vdev_online will initialize the new metaslabs */
2957 spa_config_exit(spa, SCL_STATE, spa);
2958 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
2959 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
2960
2961 /*
2962 * If vdev_online returned an error or the underlying vdev_open
2963 * failed then we abort the expand. The only way to know that
2964 * vdev_open fails is by checking the returned newstate.
2965 */
2966 if (error || newstate != VDEV_STATE_HEALTHY) {
2967 if (ztest_opts.zo_verbose >= 5) {
2968 (void) printf("Unable to expand vdev, state %llu, "
2969 "error %d\n", (u_longlong_t)newstate, error);
2970 }
2971 return (vd);
2972 }
2973 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
2974
2975 /*
2976 * Since we dropped the lock we need to ensure that we're
2977 * still talking to the original vdev. It's possible this
2978 * vdev may have been detached/replaced while we were
2979 * trying to online it.
2980 */
2981 if (generation != spa->spa_config_generation) {
2982 if (ztest_opts.zo_verbose >= 5) {
2983 (void) printf("vdev configuration has changed, "
2984 "guid %llu, state %llu, expected gen %llu, "
2985 "got gen %llu\n",
2986 (u_longlong_t)guid,
2987 (u_longlong_t)tvd->vdev_state,
2988 (u_longlong_t)generation,
2989 (u_longlong_t)spa->spa_config_generation);
2990 }
2991 return (vd);
2992 }
2993 return (NULL);
2994 }
2995
2996 /*
2997 * Traverse the vdev tree calling the supplied function.
2998 * We continue to walk the tree until we either have walked all
2999 * children or we receive a non-NULL return from the callback.
3000 * If a NULL callback is passed, then we just return back the first
3001 * leaf vdev we encounter.
3002 */
3003 vdev_t *
3004 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
3005 {
3006 if (vd->vdev_ops->vdev_op_leaf) {
3007 if (func == NULL)
3008 return (vd);
3009 else
3010 return (func(vd, arg));
3011 }
3012
3013 for (uint_t c = 0; c < vd->vdev_children; c++) {
3014 vdev_t *cvd = vd->vdev_child[c];
3015 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
3016 return (cvd);
3017 }
3018 return (NULL);
3019 }
3020
3021 /*
3022 * Verify that dynamic LUN growth works as expected.
3023 */
3024 /* ARGSUSED */
3025 void
3026 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
3027 {
3028 spa_t *spa = ztest_spa;
3029 vdev_t *vd, *tvd;
3030 metaslab_class_t *mc;
3031 metaslab_group_t *mg;
3032 size_t psize, newsize;
3033 uint64_t top;
3034 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
3035
3036 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
3037 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3038
3039 top = ztest_random_vdev_top(spa, B_TRUE);
3040
3041 tvd = spa->spa_root_vdev->vdev_child[top];
3042 mg = tvd->vdev_mg;
3043 mc = mg->mg_class;
3044 old_ms_count = tvd->vdev_ms_count;
3045 old_class_space = metaslab_class_get_space(mc);
3046
3047 /*
3048 * Determine the size of the first leaf vdev associated with
3049 * our top-level device.
3050 */
3051 vd = vdev_walk_tree(tvd, NULL, NULL);
3052 ASSERT3P(vd, !=, NULL);
3053 ASSERT(vd->vdev_ops->vdev_op_leaf);
3054
3055 psize = vd->vdev_psize;
3056
3057 /*
3058 * We only try to expand the vdev if it's healthy, less than 4x its
3059 * original size, and it has a valid psize.
3060 */
3061 if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
3062 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
3063 spa_config_exit(spa, SCL_STATE, spa);
3064 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3065 return;
3066 }
3067 ASSERT(psize > 0);
3068 newsize = psize + psize / 8;
3069 ASSERT3U(newsize, >, psize);
3070
3071 if (ztest_opts.zo_verbose >= 6) {
3072 (void) printf("Expanding LUN %s from %lu to %lu\n",
3073 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
3074 }
3075
3076 /*
3077 * Growing the vdev is a two step process:
3078 * 1). expand the physical size (i.e. relabel)
3079 * 2). online the vdev to create the new metaslabs
3080 */
3081 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
3082 vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
3083 tvd->vdev_state != VDEV_STATE_HEALTHY) {
3084 if (ztest_opts.zo_verbose >= 5) {
3085 (void) printf("Could not expand LUN because "
3086 "the vdev configuration changed.\n");
3087 }
3088 spa_config_exit(spa, SCL_STATE, spa);
3089 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3090 return;
3091 }
3092
3093 spa_config_exit(spa, SCL_STATE, spa);
3094
3095 /*
3096 * Expanding the LUN will update the config asynchronously,
3097 * thus we must wait for the async thread to complete any
3098 * pending tasks before proceeding.
3099 */
3100 for (;;) {
3101 boolean_t done;
3102 mutex_enter(&spa->spa_async_lock);
3103 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
3104 mutex_exit(&spa->spa_async_lock);
3105 if (done)
3106 break;
3107 txg_wait_synced(spa_get_dsl(spa), 0);
3108 (void) poll(NULL, 0, 100);
3109 }
3110
3111 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3112
3113 tvd = spa->spa_root_vdev->vdev_child[top];
3114 new_ms_count = tvd->vdev_ms_count;
3115 new_class_space = metaslab_class_get_space(mc);
3116
3117 if (tvd->vdev_mg != mg || mg->mg_class != mc) {
3118 if (ztest_opts.zo_verbose >= 5) {
3119 (void) printf("Could not verify LUN expansion due to "
3120 "intervening vdev offline or remove.\n");
3121 }
3122 spa_config_exit(spa, SCL_STATE, spa);
3123 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3124 return;
3125 }
3126
3127 /*
3128 * Make sure we were able to grow the vdev.
3129 */
3130 if (new_ms_count <= old_ms_count)
3131 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n",
3132 old_ms_count, new_ms_count);
3133
3134 /*
3135 * Make sure we were able to grow the pool.
3136 */
3137 if (new_class_space <= old_class_space)
3138 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n",
3139 old_class_space, new_class_space);
3140
3141 if (ztest_opts.zo_verbose >= 5) {
3142 char oldnumbuf[6], newnumbuf[6];
3143
3144 nicenum(old_class_space, oldnumbuf);
3145 nicenum(new_class_space, newnumbuf);
3146 (void) printf("%s grew from %s to %s\n",
3147 spa->spa_name, oldnumbuf, newnumbuf);
3148 }
3149
3150 spa_config_exit(spa, SCL_STATE, spa);
3151 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3152 }
3153
3154 /*
3155 * Verify that dmu_objset_{create,destroy,open,close} work as expected.
3156 */
3157 /* ARGSUSED */
3158 static void
3159 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
3160 {
3161 /*
3162 * Create the objects common to all ztest datasets.
3163 */
3164 VERIFY(zap_create_claim(os, ZTEST_DIROBJ,
3165 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0);
3166 }
3167
3168 static int
3169 ztest_dataset_create(char *dsname)
3170 {
3171 uint64_t zilset = ztest_random(100);
3172 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0,
3173 ztest_objset_create_cb, NULL);
3174
3175 if (err || zilset < 80)
3176 return (err);
3177
3178 if (ztest_opts.zo_verbose >= 6)
3179 (void) printf("Setting dataset %s to sync always\n", dsname);
3180 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
3181 ZFS_SYNC_ALWAYS, B_FALSE));
3182 }
3183
3184 /* ARGSUSED */
3185 static int
3186 ztest_objset_destroy_cb(const char *name, void *arg)
3187 {
3188 objset_t *os;
3189 dmu_object_info_t doi;
3190 int error;
3191
3192 /*
3193 * Verify that the dataset contains a directory object.
3194 */
3195 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os));
3196 error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
3197 if (error != ENOENT) {
3198 /* We could have crashed in the middle of destroying it */
3199 ASSERT0(error);
3200 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
3201 ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
3202 }
3203 dmu_objset_disown(os, FTAG);
3204
3205 /*
3206 * Destroy the dataset.
3207 */
3208 if (strchr(name, '@') != NULL) {
3209 VERIFY0(dsl_destroy_snapshot(name, B_FALSE));
3210 } else {
3211 VERIFY0(dsl_destroy_head(name));
3212 }
3213 return (0);
3214 }
3215
3216 static boolean_t
3217 ztest_snapshot_create(char *osname, uint64_t id)
3218 {
3219 char snapname[MAXNAMELEN];
3220 int error;
3221
3222 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id);
3223
3224 error = dmu_objset_snapshot_one(osname, snapname);
3225 if (error == ENOSPC) {
3226 ztest_record_enospc(FTAG);
3227 return (B_FALSE);
3228 }
3229 if (error != 0 && error != EEXIST) {
3230 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname,
3231 snapname, error);
3232 }
3233 return (B_TRUE);
3234 }
3235
3236 static boolean_t
3237 ztest_snapshot_destroy(char *osname, uint64_t id)
3238 {
3239 char snapname[MAXNAMELEN];
3240 int error;
3241
3242 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname,
3243 (u_longlong_t)id);
3244
3245 error = dsl_destroy_snapshot(snapname, B_FALSE);
3246 if (error != 0 && error != ENOENT)
3247 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error);
3248 return (B_TRUE);
3249 }
3250
3251 /* ARGSUSED */
3252 void
3253 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
3254 {
3255 ztest_ds_t zdtmp;
3256 int iters;
3257 int error;
3258 objset_t *os, *os2;
3259 char name[MAXNAMELEN];
3260 zilog_t *zilog;
3261
3262 (void) rw_rdlock(&ztest_name_lock);
3263
3264 (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu",
3265 ztest_opts.zo_pool, (u_longlong_t)id);
3266
3267 /*
3268 * If this dataset exists from a previous run, process its replay log
3269 * half of the time. If we don't replay it, then dmu_objset_destroy()
3270 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
3271 */
3272 if (ztest_random(2) == 0 &&
3273 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) {
3274 ztest_zd_init(&zdtmp, NULL, os);
3275 zil_replay(os, &zdtmp, ztest_replay_vector);
3276 ztest_zd_fini(&zdtmp);
3277 dmu_objset_disown(os, FTAG);
3278 }
3279
3280 /*
3281 * There may be an old instance of the dataset we're about to
3282 * create lying around from a previous run. If so, destroy it
3283 * and all of its snapshots.
3284 */
3285 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
3286 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
3287
3288 /*
3289 * Verify that the destroyed dataset is no longer in the namespace.
3290 */
3291 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
3292 FTAG, &os));
3293
3294 /*
3295 * Verify that we can create a new dataset.
3296 */
3297 error = ztest_dataset_create(name);
3298 if (error) {
3299 if (error == ENOSPC) {
3300 ztest_record_enospc(FTAG);
3301 (void) rw_unlock(&ztest_name_lock);
3302 return;
3303 }
3304 fatal(0, "dmu_objset_create(%s) = %d", name, error);
3305 }
3306
3307 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os));
3308
3309 ztest_zd_init(&zdtmp, NULL, os);
3310
3311 /*
3312 * Open the intent log for it.
3313 */
3314 zilog = zil_open(os, ztest_get_data);
3315
3316 /*
3317 * Put some objects in there, do a little I/O to them,
3318 * and randomly take a couple of snapshots along the way.
3319 */
3320 iters = ztest_random(5);
3321 for (int i = 0; i < iters; i++) {
3322 ztest_dmu_object_alloc_free(&zdtmp, id);
3323 if (ztest_random(iters) == 0)
3324 (void) ztest_snapshot_create(name, i);
3325 }
3326
3327 /*
3328 * Verify that we cannot create an existing dataset.
3329 */
3330 VERIFY3U(EEXIST, ==,
3331 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL));
3332
3333 /*
3334 * Verify that we can hold an objset that is also owned.
3335 */
3336 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2));
3337 dmu_objset_rele(os2, FTAG);
3338
3339 /*
3340 * Verify that we cannot own an objset that is already owned.
3341 */
3342 VERIFY3U(EBUSY, ==,
3343 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2));
3344
3345 zil_close(zilog);
3346 dmu_objset_disown(os, FTAG);
3347 ztest_zd_fini(&zdtmp);
3348
3349 (void) rw_unlock(&ztest_name_lock);
3350 }
3351
3352 /*
3353 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
3354 */
3355 void
3356 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
3357 {
3358 (void) rw_rdlock(&ztest_name_lock);
3359 (void) ztest_snapshot_destroy(zd->zd_name, id);
3360 (void) ztest_snapshot_create(zd->zd_name, id);
3361 (void) rw_unlock(&ztest_name_lock);
3362 }
3363
3364 /*
3365 * Cleanup non-standard snapshots and clones.
3366 */
3367 void
3368 ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
3369 {
3370 char snap1name[MAXNAMELEN];
3371 char clone1name[MAXNAMELEN];
3372 char snap2name[MAXNAMELEN];
3373 char clone2name[MAXNAMELEN];
3374 char snap3name[MAXNAMELEN];
3375 int error;
3376
3377 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3378 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3379 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3380 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3381 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3382
3383 error = dsl_destroy_head(clone2name);
3384 if (error && error != ENOENT)
3385 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error);
3386 error = dsl_destroy_snapshot(snap3name, B_FALSE);
3387 if (error && error != ENOENT)
3388 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error);
3389 error = dsl_destroy_snapshot(snap2name, B_FALSE);
3390 if (error && error != ENOENT)
3391 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error);
3392 error = dsl_destroy_head(clone1name);
3393 if (error && error != ENOENT)
3394 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error);
3395 error = dsl_destroy_snapshot(snap1name, B_FALSE);
3396 if (error && error != ENOENT)
3397 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error);
3398 }
3399
3400 /*
3401 * Verify dsl_dataset_promote handles EBUSY
3402 */
3403 void
3404 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
3405 {
3406 objset_t *os;
3407 char snap1name[MAXNAMELEN];
3408 char clone1name[MAXNAMELEN];
3409 char snap2name[MAXNAMELEN];
3410 char clone2name[MAXNAMELEN];
3411 char snap3name[MAXNAMELEN];
3412 char *osname = zd->zd_name;
3413 int error;
3414
3415 (void) rw_rdlock(&ztest_name_lock);
3416
3417 ztest_dsl_dataset_cleanup(osname, id);
3418
3419 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3420 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3421 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3422 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3423 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3424
3425 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
3426 if (error && error != EEXIST) {
3427 if (error == ENOSPC) {
3428 ztest_record_enospc(FTAG);
3429 goto out;
3430 }
3431 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error);
3432 }
3433
3434 error = dmu_objset_clone(clone1name, snap1name);
3435 if (error) {
3436 if (error == ENOSPC) {
3437 ztest_record_enospc(FTAG);
3438 goto out;
3439 }
3440 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
3441 }
3442
3443 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
3444 if (error && error != EEXIST) {
3445 if (error == ENOSPC) {
3446 ztest_record_enospc(FTAG);
3447 goto out;
3448 }
3449 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
3450 }
3451
3452 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
3453 if (error && error != EEXIST) {
3454 if (error == ENOSPC) {
3455 ztest_record_enospc(FTAG);
3456 goto out;
3457 }
3458 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
3459 }
3460
3461 error = dmu_objset_clone(clone2name, snap3name);
3462 if (error) {
3463 if (error == ENOSPC) {
3464 ztest_record_enospc(FTAG);
3465 goto out;
3466 }
3467 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error);
3468 }
3469
3470 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os);
3471 if (error)
3472 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error);
3473 error = dsl_dataset_promote(clone2name, NULL);
3474 if (error == ENOSPC) {
3475 dmu_objset_disown(os, FTAG);
3476 ztest_record_enospc(FTAG);
3477 goto out;
3478 }
3479 if (error != EBUSY)
3480 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
3481 error);
3482 dmu_objset_disown(os, FTAG);
3483
3484 out:
3485 ztest_dsl_dataset_cleanup(osname, id);
3486
3487 (void) rw_unlock(&ztest_name_lock);
3488 }
3489
3490 /*
3491 * Verify that dmu_object_{alloc,free} work as expected.
3492 */
3493 void
3494 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
3495 {
3496 ztest_od_t od[4];
3497 int batchsize = sizeof (od) / sizeof (od[0]);
3498
3499 for (int b = 0; b < batchsize; b++)
3500 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0);
3501
3502 /*
3503 * Destroy the previous batch of objects, create a new batch,
3504 * and do some I/O on the new objects.
3505 */
3506 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0)
3507 return;
3508
3509 while (ztest_random(4 * batchsize) != 0)
3510 ztest_io(zd, od[ztest_random(batchsize)].od_object,
3511 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
3512 }
3513
3514 /*
3515 * Verify that dmu_{read,write} work as expected.
3516 */
3517 void
3518 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
3519 {
3520 objset_t *os = zd->zd_os;
3521 ztest_od_t od[2];
3522 dmu_tx_t *tx;
3523 int i, freeit, error;
3524 uint64_t n, s, txg;
3525 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
3526 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3527 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
3528 uint64_t regions = 997;
3529 uint64_t stride = 123456789ULL;
3530 uint64_t width = 40;
3531 int free_percent = 5;
3532
3533 /*
3534 * This test uses two objects, packobj and bigobj, that are always
3535 * updated together (i.e. in the same tx) so that their contents are
3536 * in sync and can be compared. Their contents relate to each other
3537 * in a simple way: packobj is a dense array of 'bufwad' structures,
3538 * while bigobj is a sparse array of the same bufwads. Specifically,
3539 * for any index n, there are three bufwads that should be identical:
3540 *
3541 * packobj, at offset n * sizeof (bufwad_t)
3542 * bigobj, at the head of the nth chunk
3543 * bigobj, at the tail of the nth chunk
3544 *
3545 * The chunk size is arbitrary. It doesn't have to be a power of two,
3546 * and it doesn't have any relation to the object blocksize.
3547 * The only requirement is that it can hold at least two bufwads.
3548 *
3549 * Normally, we write the bufwad to each of these locations.
3550 * However, free_percent of the time we instead write zeroes to
3551 * packobj and perform a dmu_free_range() on bigobj. By comparing
3552 * bigobj to packobj, we can verify that the DMU is correctly
3553 * tracking which parts of an object are allocated and free,
3554 * and that the contents of the allocated blocks are correct.
3555 */
3556
3557 /*
3558 * Read the directory info. If it's the first time, set things up.
3559 */
3560 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize);
3561 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3562
3563 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3564 return;
3565
3566 bigobj = od[0].od_object;
3567 packobj = od[1].od_object;
3568 chunksize = od[0].od_gen;
3569 ASSERT(chunksize == od[1].od_gen);
3570
3571 /*
3572 * Prefetch a random chunk of the big object.
3573 * Our aim here is to get some async reads in flight
3574 * for blocks that we may free below; the DMU should
3575 * handle this race correctly.
3576 */
3577 n = ztest_random(regions) * stride + ztest_random(width);
3578 s = 1 + ztest_random(2 * width - 1);
3579 dmu_prefetch(os, bigobj, n * chunksize, s * chunksize);
3580
3581 /*
3582 * Pick a random index and compute the offsets into packobj and bigobj.
3583 */
3584 n = ztest_random(regions) * stride + ztest_random(width);
3585 s = 1 + ztest_random(width - 1);
3586
3587 packoff = n * sizeof (bufwad_t);
3588 packsize = s * sizeof (bufwad_t);
3589
3590 bigoff = n * chunksize;
3591 bigsize = s * chunksize;
3592
3593 packbuf = umem_alloc(packsize, UMEM_NOFAIL);
3594 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
3595
3596 /*
3597 * free_percent of the time, free a range of bigobj rather than
3598 * overwriting it.
3599 */
3600 freeit = (ztest_random(100) < free_percent);
3601
3602 /*
3603 * Read the current contents of our objects.
3604 */
3605 error = dmu_read(os, packobj, packoff, packsize, packbuf,
3606 DMU_READ_PREFETCH);
3607 ASSERT0(error);
3608 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
3609 DMU_READ_PREFETCH);
3610 ASSERT0(error);
3611
3612 /*
3613 * Get a tx for the mods to both packobj and bigobj.
3614 */
3615 tx = dmu_tx_create(os);
3616
3617 dmu_tx_hold_write(tx, packobj, packoff, packsize);
3618
3619 if (freeit)
3620 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
3621 else
3622 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3623
3624 /* This accounts for setting the checksum/compression. */
3625 dmu_tx_hold_bonus(tx, bigobj);
3626
3627 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3628 if (txg == 0) {
3629 umem_free(packbuf, packsize);
3630 umem_free(bigbuf, bigsize);
3631 return;
3632 }
3633
3634 enum zio_checksum cksum;
3635 do {
3636 cksum = (enum zio_checksum)
3637 ztest_random_dsl_prop(ZFS_PROP_CHECKSUM);
3638 } while (cksum >= ZIO_CHECKSUM_LEGACY_FUNCTIONS);
3639 dmu_object_set_checksum(os, bigobj, cksum, tx);
3640
3641 enum zio_compress comp;
3642 do {
3643 comp = (enum zio_compress)
3644 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION);
3645 } while (comp >= ZIO_COMPRESS_LEGACY_FUNCTIONS);
3646 dmu_object_set_compress(os, bigobj, comp, tx);
3647
3648 /*
3649 * For each index from n to n + s, verify that the existing bufwad
3650 * in packobj matches the bufwads at the head and tail of the
3651 * corresponding chunk in bigobj. Then update all three bufwads
3652 * with the new values we want to write out.
3653 */
3654 for (i = 0; i < s; i++) {
3655 /* LINTED */
3656 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3657 /* LINTED */
3658 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3659 /* LINTED */
3660 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3661
3662 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3663 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3664
3665 if (pack->bw_txg > txg)
3666 fatal(0, "future leak: got %llx, open txg is %llx",
3667 pack->bw_txg, txg);
3668
3669 if (pack->bw_data != 0 && pack->bw_index != n + i)
3670 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3671 pack->bw_index, n, i);
3672
3673 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3674 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3675
3676 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3677 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3678
3679 if (freeit) {
3680 bzero(pack, sizeof (bufwad_t));
3681 } else {
3682 pack->bw_index = n + i;
3683 pack->bw_txg = txg;
3684 pack->bw_data = 1 + ztest_random(-2ULL);
3685 }
3686 *bigH = *pack;
3687 *bigT = *pack;
3688 }
3689
3690 /*
3691 * We've verified all the old bufwads, and made new ones.
3692 * Now write them out.
3693 */
3694 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3695
3696 if (freeit) {
3697 if (ztest_opts.zo_verbose >= 7) {
3698 (void) printf("freeing offset %llx size %llx"
3699 " txg %llx\n",
3700 (u_longlong_t)bigoff,
3701 (u_longlong_t)bigsize,
3702 (u_longlong_t)txg);
3703 }
3704 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx));
3705 } else {
3706 if (ztest_opts.zo_verbose >= 7) {
3707 (void) printf("writing offset %llx size %llx"
3708 " txg %llx\n",
3709 (u_longlong_t)bigoff,
3710 (u_longlong_t)bigsize,
3711 (u_longlong_t)txg);
3712 }
3713 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
3714 }
3715
3716 dmu_tx_commit(tx);
3717
3718 /*
3719 * Sanity check the stuff we just wrote.
3720 */
3721 {
3722 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3723 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3724
3725 VERIFY(0 == dmu_read(os, packobj, packoff,
3726 packsize, packcheck, DMU_READ_PREFETCH));
3727 VERIFY(0 == dmu_read(os, bigobj, bigoff,
3728 bigsize, bigcheck, DMU_READ_PREFETCH));
3729
3730 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
3731 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
3732
3733 umem_free(packcheck, packsize);
3734 umem_free(bigcheck, bigsize);
3735 }
3736
3737 umem_free(packbuf, packsize);
3738 umem_free(bigbuf, bigsize);
3739 }
3740
3741 void
3742 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
3743 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
3744 {
3745 uint64_t i;
3746 bufwad_t *pack;
3747 bufwad_t *bigH;
3748 bufwad_t *bigT;
3749
3750 /*
3751 * For each index from n to n + s, verify that the existing bufwad
3752 * in packobj matches the bufwads at the head and tail of the
3753 * corresponding chunk in bigobj. Then update all three bufwads
3754 * with the new values we want to write out.
3755 */
3756 for (i = 0; i < s; i++) {
3757 /* LINTED */
3758 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3759 /* LINTED */
3760 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3761 /* LINTED */
3762 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3763
3764 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3765 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3766
3767 if (pack->bw_txg > txg)
3768 fatal(0, "future leak: got %llx, open txg is %llx",
3769 pack->bw_txg, txg);
3770
3771 if (pack->bw_data != 0 && pack->bw_index != n + i)
3772 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3773 pack->bw_index, n, i);
3774
3775 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3776 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3777
3778 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3779 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3780
3781 pack->bw_index = n + i;
3782 pack->bw_txg = txg;
3783 pack->bw_data = 1 + ztest_random(-2ULL);
3784
3785 *bigH = *pack;
3786 *bigT = *pack;
3787 }
3788 }
3789
3790 void
3791 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
3792 {
3793 objset_t *os = zd->zd_os;
3794 ztest_od_t od[2];
3795 dmu_tx_t *tx;
3796 uint64_t i;
3797 int error;
3798 uint64_t n, s, txg;
3799 bufwad_t *packbuf, *bigbuf;
3800 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3801 uint64_t blocksize = ztest_random_blocksize();
3802 uint64_t chunksize = blocksize;
3803 uint64_t regions = 997;
3804 uint64_t stride = 123456789ULL;
3805 uint64_t width = 9;
3806 dmu_buf_t *bonus_db;
3807 arc_buf_t **bigbuf_arcbufs;
3808 dmu_object_info_t doi;
3809
3810 /*
3811 * This test uses two objects, packobj and bigobj, that are always
3812 * updated together (i.e. in the same tx) so that their contents are
3813 * in sync and can be compared. Their contents relate to each other
3814 * in a simple way: packobj is a dense array of 'bufwad' structures,
3815 * while bigobj is a sparse array of the same bufwads. Specifically,
3816 * for any index n, there are three bufwads that should be identical:
3817 *
3818 * packobj, at offset n * sizeof (bufwad_t)
3819 * bigobj, at the head of the nth chunk
3820 * bigobj, at the tail of the nth chunk
3821 *
3822 * The chunk size is set equal to bigobj block size so that
3823 * dmu_assign_arcbuf() can be tested for object updates.
3824 */
3825
3826 /*
3827 * Read the directory info. If it's the first time, set things up.
3828 */
3829 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
3830 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3831
3832 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3833 return;
3834
3835 bigobj = od[0].od_object;
3836 packobj = od[1].od_object;
3837 blocksize = od[0].od_blocksize;
3838 chunksize = blocksize;
3839 ASSERT(chunksize == od[1].od_gen);
3840
3841 VERIFY(dmu_object_info(os, bigobj, &doi) == 0);
3842 VERIFY(ISP2(doi.doi_data_block_size));
3843 VERIFY(chunksize == doi.doi_data_block_size);
3844 VERIFY(chunksize >= 2 * sizeof (bufwad_t));
3845
3846 /*
3847 * Pick a random index and compute the offsets into packobj and bigobj.
3848 */
3849 n = ztest_random(regions) * stride + ztest_random(width);
3850 s = 1 + ztest_random(width - 1);
3851
3852 packoff = n * sizeof (bufwad_t);
3853 packsize = s * sizeof (bufwad_t);
3854
3855 bigoff = n * chunksize;
3856 bigsize = s * chunksize;
3857
3858 packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
3859 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
3860
3861 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
3862
3863 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
3864
3865 /*
3866 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
3867 * Iteration 1 test zcopy to already referenced dbufs.
3868 * Iteration 2 test zcopy to dirty dbuf in the same txg.
3869 * Iteration 3 test zcopy to dbuf dirty in previous txg.
3870 * Iteration 4 test zcopy when dbuf is no longer dirty.
3871 * Iteration 5 test zcopy when it can't be done.
3872 * Iteration 6 one more zcopy write.
3873 */
3874 for (i = 0; i < 7; i++) {
3875 uint64_t j;
3876 uint64_t off;
3877
3878 /*
3879 * In iteration 5 (i == 5) use arcbufs
3880 * that don't match bigobj blksz to test
3881 * dmu_assign_arcbuf() when it can't directly
3882 * assign an arcbuf to a dbuf.
3883 */
3884 for (j = 0; j < s; j++) {
3885 if (i != 5) {
3886 bigbuf_arcbufs[j] =
3887 dmu_request_arcbuf(bonus_db, chunksize);
3888 } else {
3889 bigbuf_arcbufs[2 * j] =
3890 dmu_request_arcbuf(bonus_db, chunksize / 2);
3891 bigbuf_arcbufs[2 * j + 1] =
3892 dmu_request_arcbuf(bonus_db, chunksize / 2);
3893 }
3894 }
3895
3896 /*
3897 * Get a tx for the mods to both packobj and bigobj.
3898 */
3899 tx = dmu_tx_create(os);
3900
3901 dmu_tx_hold_write(tx, packobj, packoff, packsize);
3902 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3903
3904 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3905 if (txg == 0) {
3906 umem_free(packbuf, packsize);
3907 umem_free(bigbuf, bigsize);
3908 for (j = 0; j < s; j++) {
3909 if (i != 5) {
3910 dmu_return_arcbuf(bigbuf_arcbufs[j]);
3911 } else {
3912 dmu_return_arcbuf(
3913 bigbuf_arcbufs[2 * j]);
3914 dmu_return_arcbuf(
3915 bigbuf_arcbufs[2 * j + 1]);
3916 }
3917 }
3918 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
3919 dmu_buf_rele(bonus_db, FTAG);
3920 return;
3921 }
3922
3923 /*
3924 * 50% of the time don't read objects in the 1st iteration to
3925 * test dmu_assign_arcbuf() for the case when there're no
3926 * existing dbufs for the specified offsets.
3927 */
3928 if (i != 0 || ztest_random(2) != 0) {
3929 error = dmu_read(os, packobj, packoff,
3930 packsize, packbuf, DMU_READ_PREFETCH);
3931 ASSERT0(error);
3932 error = dmu_read(os, bigobj, bigoff, bigsize,
3933 bigbuf, DMU_READ_PREFETCH);
3934 ASSERT0(error);
3935 }
3936 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
3937 n, chunksize, txg);
3938
3939 /*
3940 * We've verified all the old bufwads, and made new ones.
3941 * Now write them out.
3942 */
3943 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3944 if (ztest_opts.zo_verbose >= 7) {
3945 (void) printf("writing offset %llx size %llx"
3946 " txg %llx\n",
3947 (u_longlong_t)bigoff,
3948 (u_longlong_t)bigsize,
3949 (u_longlong_t)txg);
3950 }
3951 for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
3952 dmu_buf_t *dbt;
3953 if (i != 5) {
3954 bcopy((caddr_t)bigbuf + (off - bigoff),
3955 bigbuf_arcbufs[j]->b_data, chunksize);
3956 } else {
3957 bcopy((caddr_t)bigbuf + (off - bigoff),
3958 bigbuf_arcbufs[2 * j]->b_data,
3959 chunksize / 2);
3960 bcopy((caddr_t)bigbuf + (off - bigoff) +
3961 chunksize / 2,
3962 bigbuf_arcbufs[2 * j + 1]->b_data,
3963 chunksize / 2);
3964 }
3965
3966 if (i == 1) {
3967 VERIFY(dmu_buf_hold(os, bigobj, off,
3968 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
3969 }
3970 if (i != 5) {
3971 dmu_assign_arcbuf(bonus_db, off,
3972 bigbuf_arcbufs[j], tx);
3973 } else {
3974 dmu_assign_arcbuf(bonus_db, off,
3975 bigbuf_arcbufs[2 * j], tx);
3976 dmu_assign_arcbuf(bonus_db,
3977 off + chunksize / 2,
3978 bigbuf_arcbufs[2 * j + 1], tx);
3979 }
3980 if (i == 1) {
3981 dmu_buf_rele(dbt, FTAG);
3982 }
3983 }
3984 dmu_tx_commit(tx);
3985
3986 /*
3987 * Sanity check the stuff we just wrote.
3988 */
3989 {
3990 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3991 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3992
3993 VERIFY(0 == dmu_read(os, packobj, packoff,
3994 packsize, packcheck, DMU_READ_PREFETCH));
3995 VERIFY(0 == dmu_read(os, bigobj, bigoff,
3996 bigsize, bigcheck, DMU_READ_PREFETCH));
3997
3998 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
3999 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
4000
4001 umem_free(packcheck, packsize);
4002 umem_free(bigcheck, bigsize);
4003 }
4004 if (i == 2) {
4005 txg_wait_open(dmu_objset_pool(os), 0);
4006 } else if (i == 3) {
4007 txg_wait_synced(dmu_objset_pool(os), 0);
4008 }
4009 }
4010
4011 dmu_buf_rele(bonus_db, FTAG);
4012 umem_free(packbuf, packsize);
4013 umem_free(bigbuf, bigsize);
4014 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
4015 }
4016
4017 /* ARGSUSED */
4018 void
4019 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
4020 {
4021 ztest_od_t od[1];
4022 uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
4023 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4024
4025 /*
4026 * Have multiple threads write to large offsets in an object
4027 * to verify that parallel writes to an object -- even to the
4028 * same blocks within the object -- doesn't cause any trouble.
4029 */
4030 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4031
4032 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4033 return;
4034
4035 while (ztest_random(10) != 0)
4036 ztest_io(zd, od[0].od_object, offset);
4037 }
4038
4039 void
4040 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
4041 {
4042 ztest_od_t od[1];
4043 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
4044 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4045 uint64_t count = ztest_random(20) + 1;
4046 uint64_t blocksize = ztest_random_blocksize();
4047 void *data;
4048
4049 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4050
4051 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4052 return;
4053
4054 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0)
4055 return;
4056
4057 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize);
4058
4059 data = umem_zalloc(blocksize, UMEM_NOFAIL);
4060
4061 while (ztest_random(count) != 0) {
4062 uint64_t randoff = offset + (ztest_random(count) * blocksize);
4063 if (ztest_write(zd, od[0].od_object, randoff, blocksize,
4064 data) != 0)
4065 break;
4066 while (ztest_random(4) != 0)
4067 ztest_io(zd, od[0].od_object, randoff);
4068 }
4069
4070 umem_free(data, blocksize);
4071 }
4072
4073 /*
4074 * Verify that zap_{create,destroy,add,remove,update} work as expected.
4075 */
4076 #define ZTEST_ZAP_MIN_INTS 1
4077 #define ZTEST_ZAP_MAX_INTS 4
4078 #define ZTEST_ZAP_MAX_PROPS 1000
4079
4080 void
4081 ztest_zap(ztest_ds_t *zd, uint64_t id)
4082 {
4083 objset_t *os = zd->zd_os;
4084 ztest_od_t od[1];
4085 uint64_t object;
4086 uint64_t txg, last_txg;
4087 uint64_t value[ZTEST_ZAP_MAX_INTS];
4088 uint64_t zl_ints, zl_intsize, prop;
4089 int i, ints;
4090 dmu_tx_t *tx;
4091 char propname[100], txgname[100];
4092 int error;
4093 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
4094
4095 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
4096
4097 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4098 return;
4099
4100 object = od[0].od_object;
4101
4102 /*
4103 * Generate a known hash collision, and verify that
4104 * we can lookup and remove both entries.
4105 */
4106 tx = dmu_tx_create(os);
4107 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4108 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4109 if (txg == 0)
4110 return;
4111 for (i = 0; i < 2; i++) {
4112 value[i] = i;
4113 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t),
4114 1, &value[i], tx));
4115 }
4116 for (i = 0; i < 2; i++) {
4117 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
4118 sizeof (uint64_t), 1, &value[i], tx));
4119 VERIFY3U(0, ==,
4120 zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
4121 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4122 ASSERT3U(zl_ints, ==, 1);
4123 }
4124 for (i = 0; i < 2; i++) {
4125 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx));
4126 }
4127 dmu_tx_commit(tx);
4128
4129 /*
4130 * Generate a buch of random entries.
4131 */
4132 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
4133
4134 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4135 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4136 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4137 bzero(value, sizeof (value));
4138 last_txg = 0;
4139
4140 /*
4141 * If these zap entries already exist, validate their contents.
4142 */
4143 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4144 if (error == 0) {
4145 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4146 ASSERT3U(zl_ints, ==, 1);
4147
4148 VERIFY(zap_lookup(os, object, txgname, zl_intsize,
4149 zl_ints, &last_txg) == 0);
4150
4151 VERIFY(zap_length(os, object, propname, &zl_intsize,
4152 &zl_ints) == 0);
4153
4154 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4155 ASSERT3U(zl_ints, ==, ints);
4156
4157 VERIFY(zap_lookup(os, object, propname, zl_intsize,
4158 zl_ints, value) == 0);
4159
4160 for (i = 0; i < ints; i++) {
4161 ASSERT3U(value[i], ==, last_txg + object + i);
4162 }
4163 } else {
4164 ASSERT3U(error, ==, ENOENT);
4165 }
4166
4167 /*
4168 * Atomically update two entries in our zap object.
4169 * The first is named txg_%llu, and contains the txg
4170 * in which the property was last updated. The second
4171 * is named prop_%llu, and the nth element of its value
4172 * should be txg + object + n.
4173 */
4174 tx = dmu_tx_create(os);
4175 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4176 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4177 if (txg == 0)
4178 return;
4179
4180 if (last_txg > txg)
4181 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg);
4182
4183 for (i = 0; i < ints; i++)
4184 value[i] = txg + object + i;
4185
4186 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t),
4187 1, &txg, tx));
4188 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t),
4189 ints, value, tx));
4190
4191 dmu_tx_commit(tx);
4192
4193 /*
4194 * Remove a random pair of entries.
4195 */
4196 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4197 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4198 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4199
4200 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4201
4202 if (error == ENOENT)
4203 return;
4204
4205 ASSERT0(error);
4206
4207 tx = dmu_tx_create(os);
4208 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4209 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4210 if (txg == 0)
4211 return;
4212 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx));
4213 VERIFY3U(0, ==, zap_remove(os, object, propname, tx));
4214 dmu_tx_commit(tx);
4215 }
4216
4217 /*
4218 * Testcase to test the upgrading of a microzap to fatzap.
4219 */
4220 void
4221 ztest_fzap(ztest_ds_t *zd, uint64_t id)
4222 {
4223 objset_t *os = zd->zd_os;
4224 ztest_od_t od[1];
4225 uint64_t object, txg;
4226
4227 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
4228
4229 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4230 return;
4231
4232 object = od[0].od_object;
4233
4234 /*
4235 * Add entries to this ZAP and make sure it spills over
4236 * and gets upgraded to a fatzap. Also, since we are adding
4237 * 2050 entries we should see ptrtbl growth and leaf-block split.
4238 */
4239 for (int i = 0; i < 2050; i++) {
4240 char name[MAXNAMELEN];
4241 uint64_t value = i;
4242 dmu_tx_t *tx;
4243 int error;
4244
4245 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu",
4246 id, value);
4247
4248 tx = dmu_tx_create(os);
4249 dmu_tx_hold_zap(tx, object, B_TRUE, name);
4250 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4251 if (txg == 0)
4252 return;
4253 error = zap_add(os, object, name, sizeof (uint64_t), 1,
4254 &value, tx);
4255 ASSERT(error == 0 || error == EEXIST);
4256 dmu_tx_commit(tx);
4257 }
4258 }
4259
4260 /* ARGSUSED */
4261 void
4262 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
4263 {
4264 objset_t *os = zd->zd_os;
4265 ztest_od_t od[1];
4266 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
4267 dmu_tx_t *tx;
4268 int i, namelen, error;
4269 int micro = ztest_random(2);
4270 char name[20], string_value[20];
4271 void *data;
4272
4273 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0);
4274
4275 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4276 return;
4277
4278 object = od[0].od_object;
4279
4280 /*
4281 * Generate a random name of the form 'xxx.....' where each
4282 * x is a random printable character and the dots are dots.
4283 * There are 94 such characters, and the name length goes from
4284 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
4285 */
4286 namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
4287
4288 for (i = 0; i < 3; i++)
4289 name[i] = '!' + ztest_random('~' - '!' + 1);
4290 for (; i < namelen - 1; i++)
4291 name[i] = '.';
4292 name[i] = '\0';
4293
4294 if ((namelen & 1) || micro) {
4295 wsize = sizeof (txg);
4296 wc = 1;
4297 data = &txg;
4298 } else {
4299 wsize = 1;
4300 wc = namelen;
4301 data = string_value;
4302 }
4303
4304 count = -1ULL;
4305 VERIFY0(zap_count(os, object, &count));
4306 ASSERT(count != -1ULL);
4307
4308 /*
4309 * Select an operation: length, lookup, add, update, remove.
4310 */
4311 i = ztest_random(5);
4312
4313 if (i >= 2) {
4314 tx = dmu_tx_create(os);
4315 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4316 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4317 if (txg == 0)
4318 return;
4319 bcopy(name, string_value, namelen);
4320 } else {
4321 tx = NULL;
4322 txg = 0;
4323 bzero(string_value, namelen);
4324 }
4325
4326 switch (i) {
4327
4328 case 0:
4329 error = zap_length(os, object, name, &zl_wsize, &zl_wc);
4330 if (error == 0) {
4331 ASSERT3U(wsize, ==, zl_wsize);
4332 ASSERT3U(wc, ==, zl_wc);
4333 } else {
4334 ASSERT3U(error, ==, ENOENT);
4335 }
4336 break;
4337
4338 case 1:
4339 error = zap_lookup(os, object, name, wsize, wc, data);
4340 if (error == 0) {
4341 if (data == string_value &&
4342 bcmp(name, data, namelen) != 0)
4343 fatal(0, "name '%s' != val '%s' len %d",
4344 name, data, namelen);
4345 } else {
4346 ASSERT3U(error, ==, ENOENT);
4347 }
4348 break;
4349
4350 case 2:
4351 error = zap_add(os, object, name, wsize, wc, data, tx);
4352 ASSERT(error == 0 || error == EEXIST);
4353 break;
4354
4355 case 3:
4356 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0);
4357 break;
4358
4359 case 4:
4360 error = zap_remove(os, object, name, tx);
4361 ASSERT(error == 0 || error == ENOENT);
4362 break;
4363 }
4364
4365 if (tx != NULL)
4366 dmu_tx_commit(tx);
4367 }
4368
4369 /*
4370 * Commit callback data.
4371 */
4372 typedef struct ztest_cb_data {
4373 list_node_t zcd_node;
4374 uint64_t zcd_txg;
4375 int zcd_expected_err;
4376 boolean_t zcd_added;
4377 boolean_t zcd_called;
4378 spa_t *zcd_spa;
4379 } ztest_cb_data_t;
4380
4381 /* This is the actual commit callback function */
4382 static void
4383 ztest_commit_callback(void *arg, int error)
4384 {
4385 ztest_cb_data_t *data = arg;
4386 uint64_t synced_txg;
4387
4388 VERIFY(data != NULL);
4389 VERIFY3S(data->zcd_expected_err, ==, error);
4390 VERIFY(!data->zcd_called);
4391
4392 synced_txg = spa_last_synced_txg(data->zcd_spa);
4393 if (data->zcd_txg > synced_txg)
4394 fatal(0, "commit callback of txg %" PRIu64 " called prematurely"
4395 ", last synced txg = %" PRIu64 "\n", data->zcd_txg,
4396 synced_txg);
4397
4398 data->zcd_called = B_TRUE;
4399
4400 if (error == ECANCELED) {
4401 ASSERT0(data->zcd_txg);
4402 ASSERT(!data->zcd_added);
4403
4404 /*
4405 * The private callback data should be destroyed here, but
4406 * since we are going to check the zcd_called field after
4407 * dmu_tx_abort(), we will destroy it there.
4408 */
4409 return;
4410 }
4411
4412 /* Was this callback added to the global callback list? */
4413 if (!data->zcd_added)
4414 goto out;
4415
4416 ASSERT3U(data->zcd_txg, !=, 0);
4417
4418 /* Remove our callback from the list */
4419 (void) mutex_lock(&zcl.zcl_callbacks_lock);
4420 list_remove(&zcl.zcl_callbacks, data);
4421 (void) mutex_unlock(&zcl.zcl_callbacks_lock);
4422
4423 out:
4424 umem_free(data, sizeof (ztest_cb_data_t));
4425 }
4426
4427 /* Allocate and initialize callback data structure */
4428 static ztest_cb_data_t *
4429 ztest_create_cb_data(objset_t *os, uint64_t txg)
4430 {
4431 ztest_cb_data_t *cb_data;
4432
4433 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
4434
4435 cb_data->zcd_txg = txg;
4436 cb_data->zcd_spa = dmu_objset_spa(os);
4437
4438 return (cb_data);
4439 }
4440
4441 /*
4442 * If a number of txgs equal to this threshold have been created after a commit
4443 * callback has been registered but not called, then we assume there is an
4444 * implementation bug.
4445 */
4446 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2)
4447
4448 /*
4449 * Commit callback test.
4450 */
4451 void
4452 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
4453 {
4454 objset_t *os = zd->zd_os;
4455 ztest_od_t od[1];
4456 dmu_tx_t *tx;
4457 ztest_cb_data_t *cb_data[3], *tmp_cb;
4458 uint64_t old_txg, txg;
4459 int i, error;
4460
4461 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4462
4463 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4464 return;
4465
4466 tx = dmu_tx_create(os);
4467
4468 cb_data[0] = ztest_create_cb_data(os, 0);
4469 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
4470
4471 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t));
4472
4473 /* Every once in a while, abort the transaction on purpose */
4474 if (ztest_random(100) == 0)
4475 error = -1;
4476
4477 if (!error)
4478 error = dmu_tx_assign(tx, TXG_NOWAIT);
4479
4480 txg = error ? 0 : dmu_tx_get_txg(tx);
4481
4482 cb_data[0]->zcd_txg = txg;
4483 cb_data[1] = ztest_create_cb_data(os, txg);
4484 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
4485
4486 if (error) {
4487 /*
4488 * It's not a strict requirement to call the registered
4489 * callbacks from inside dmu_tx_abort(), but that's what
4490 * it's supposed to happen in the current implementation
4491 * so we will check for that.
4492 */
4493 for (i = 0; i < 2; i++) {
4494 cb_data[i]->zcd_expected_err = ECANCELED;
4495 VERIFY(!cb_data[i]->zcd_called);
4496 }
4497
4498 dmu_tx_abort(tx);
4499
4500 for (i = 0; i < 2; i++) {
4501 VERIFY(cb_data[i]->zcd_called);
4502 umem_free(cb_data[i], sizeof (ztest_cb_data_t));
4503 }
4504
4505 return;
4506 }
4507
4508 cb_data[2] = ztest_create_cb_data(os, txg);
4509 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
4510
4511 /*
4512 * Read existing data to make sure there isn't a future leak.
4513 */
4514 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t),
4515 &old_txg, DMU_READ_PREFETCH));
4516
4517 if (old_txg > txg)
4518 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64,
4519 old_txg, txg);
4520
4521 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
4522
4523 (void) mutex_lock(&zcl.zcl_callbacks_lock);
4524
4525 /*
4526 * Since commit callbacks don't have any ordering requirement and since
4527 * it is theoretically possible for a commit callback to be called
4528 * after an arbitrary amount of time has elapsed since its txg has been
4529 * synced, it is difficult to reliably determine whether a commit
4530 * callback hasn't been called due to high load or due to a flawed
4531 * implementation.
4532 *
4533 * In practice, we will assume that if after a certain number of txgs a
4534 * commit callback hasn't been called, then most likely there's an
4535 * implementation bug..
4536 */
4537 tmp_cb = list_head(&zcl.zcl_callbacks);
4538 if (tmp_cb != NULL &&
4539 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) {
4540 fatal(0, "Commit callback threshold exceeded, oldest txg: %"
4541 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg);
4542 }
4543
4544 /*
4545 * Let's find the place to insert our callbacks.
4546 *
4547 * Even though the list is ordered by txg, it is possible for the
4548 * insertion point to not be the end because our txg may already be
4549 * quiescing at this point and other callbacks in the open txg
4550 * (from other objsets) may have sneaked in.
4551 */
4552 tmp_cb = list_tail(&zcl.zcl_callbacks);
4553 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
4554 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
4555
4556 /* Add the 3 callbacks to the list */
4557 for (i = 0; i < 3; i++) {
4558 if (tmp_cb == NULL)
4559 list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
4560 else
4561 list_insert_after(&zcl.zcl_callbacks, tmp_cb,
4562 cb_data[i]);
4563
4564 cb_data[i]->zcd_added = B_TRUE;
4565 VERIFY(!cb_data[i]->zcd_called);
4566
4567 tmp_cb = cb_data[i];
4568 }
4569
4570 (void) mutex_unlock(&zcl.zcl_callbacks_lock);
4571
4572 dmu_tx_commit(tx);
4573 }
4574
4575 /* ARGSUSED */
4576 void
4577 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
4578 {
4579 zfs_prop_t proplist[] = {
4580 ZFS_PROP_CHECKSUM,
4581 ZFS_PROP_COMPRESSION,
4582 ZFS_PROP_COPIES,
4583 ZFS_PROP_DEDUP
4584 };
4585
4586 (void) rw_rdlock(&ztest_name_lock);
4587
4588 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
4589 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
4590 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
4591
4592 (void) rw_unlock(&ztest_name_lock);
4593 }
4594
4595 /* ARGSUSED */
4596 void
4597 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
4598 {
4599 nvlist_t *props = NULL;
4600
4601 (void) rw_rdlock(&ztest_name_lock);
4602
4603 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO,
4604 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
4605
4606 VERIFY0(spa_prop_get(ztest_spa, &props));
4607
4608 if (ztest_opts.zo_verbose >= 6)
4609 dump_nvlist(props, 4);
4610
4611 nvlist_free(props);
4612
4613 (void) rw_unlock(&ztest_name_lock);
4614 }
4615
4616 static int
4617 user_release_one(const char *snapname, const char *holdname)
4618 {
4619 nvlist_t *snaps, *holds;
4620 int error;
4621
4622 snaps = fnvlist_alloc();
4623 holds = fnvlist_alloc();
4624 fnvlist_add_boolean(holds, holdname);
4625 fnvlist_add_nvlist(snaps, snapname, holds);
4626 fnvlist_free(holds);
4627 error = dsl_dataset_user_release(snaps, NULL);
4628 fnvlist_free(snaps);
4629 return (error);
4630 }
4631
4632 /*
4633 * Test snapshot hold/release and deferred destroy.
4634 */
4635 void
4636 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
4637 {
4638 int error;
4639 objset_t *os = zd->zd_os;
4640 objset_t *origin;
4641 char snapname[100];
4642 char fullname[100];
4643 char clonename[100];
4644 char tag[100];
4645 char osname[MAXNAMELEN];
4646 nvlist_t *holds;
4647
4648 (void) rw_rdlock(&ztest_name_lock);
4649
4650 dmu_objset_name(os, osname);
4651
4652 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id);
4653 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
4654 (void) snprintf(clonename, sizeof (clonename),
4655 "%s/ch1_%llu", osname, id);
4656 (void) snprintf(tag, sizeof (tag), "tag_%llu", id);
4657
4658 /*
4659 * Clean up from any previous run.
4660 */
4661 error = dsl_destroy_head(clonename);
4662 if (error != ENOENT)
4663 ASSERT0(error);
4664 error = user_release_one(fullname, tag);
4665 if (error != ESRCH && error != ENOENT)
4666 ASSERT0(error);
4667 error = dsl_destroy_snapshot(fullname, B_FALSE);
4668 if (error != ENOENT)
4669 ASSERT0(error);
4670
4671 /*
4672 * Create snapshot, clone it, mark snap for deferred destroy,
4673 * destroy clone, verify snap was also destroyed.
4674 */
4675 error = dmu_objset_snapshot_one(osname, snapname);
4676 if (error) {
4677 if (error == ENOSPC) {
4678 ztest_record_enospc("dmu_objset_snapshot");
4679 goto out;
4680 }
4681 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
4682 }
4683
4684 error = dmu_objset_clone(clonename, fullname);
4685 if (error) {
4686 if (error == ENOSPC) {
4687 ztest_record_enospc("dmu_objset_clone");
4688 goto out;
4689 }
4690 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error);
4691 }
4692
4693 error = dsl_destroy_snapshot(fullname, B_TRUE);
4694 if (error) {
4695 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
4696 fullname, error);
4697 }
4698
4699 error = dsl_destroy_head(clonename);
4700 if (error)
4701 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error);
4702
4703 error = dmu_objset_hold(fullname, FTAG, &origin);
4704 if (error != ENOENT)
4705 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
4706
4707 /*
4708 * Create snapshot, add temporary hold, verify that we can't
4709 * destroy a held snapshot, mark for deferred destroy,
4710 * release hold, verify snapshot was destroyed.
4711 */
4712 error = dmu_objset_snapshot_one(osname, snapname);
4713 if (error) {
4714 if (error == ENOSPC) {
4715 ztest_record_enospc("dmu_objset_snapshot");
4716 goto out;
4717 }
4718 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
4719 }
4720
4721 holds = fnvlist_alloc();
4722 fnvlist_add_string(holds, fullname, tag);
4723 error = dsl_dataset_user_hold(holds, 0, NULL);
4724 fnvlist_free(holds);
4725
4726 if (error == ENOSPC) {
4727 ztest_record_enospc("dsl_dataset_user_hold");
4728 goto out;
4729 } else if (error) {
4730 fatal(0, "dsl_dataset_user_hold(%s, %s) = %u",
4731 fullname, tag, error);
4732 }
4733
4734 error = dsl_destroy_snapshot(fullname, B_FALSE);
4735 if (error != EBUSY) {
4736 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
4737 fullname, error);
4738 }
4739
4740 error = dsl_destroy_snapshot(fullname, B_TRUE);
4741 if (error) {
4742 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
4743 fullname, error);
4744 }
4745
4746 error = user_release_one(fullname, tag);
4747 if (error)
4748 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error);
4749
4750 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
4751
4752 out:
4753 (void) rw_unlock(&ztest_name_lock);
4754 }
4755
4756 /*
4757 * Inject random faults into the on-disk data.
4758 */
4759 /* ARGSUSED */
4760 void
4761 ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
4762 {
4763 ztest_shared_t *zs = ztest_shared;
4764 spa_t *spa = ztest_spa;
4765 int fd;
4766 uint64_t offset;
4767 uint64_t leaves;
4768 uint64_t bad = 0x1990c0ffeedecade;
4769 uint64_t top, leaf;
4770 char path0[MAXPATHLEN];
4771 char pathrand[MAXPATHLEN];
4772 size_t fsize;
4773 int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */
4774 int iters = 1000;
4775 int maxfaults;
4776 int mirror_save;
4777 vdev_t *vd0 = NULL;
4778 uint64_t guid0 = 0;
4779 boolean_t islog = B_FALSE;
4780
4781 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4782 maxfaults = MAXFAULTS();
4783 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
4784 mirror_save = zs->zs_mirrors;
4785 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4786
4787 ASSERT(leaves >= 1);
4788
4789 /*
4790 * Grab the name lock as reader. There are some operations
4791 * which don't like to have their vdevs changed while
4792 * they are in progress (i.e. spa_change_guid). Those
4793 * operations will have grabbed the name lock as writer.
4794 */
4795 (void) rw_rdlock(&ztest_name_lock);
4796
4797 /*
4798 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
4799 */
4800 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
4801
4802 if (ztest_random(2) == 0) {
4803 /*
4804 * Inject errors on a normal data device or slog device.
4805 */
4806 top = ztest_random_vdev_top(spa, B_TRUE);
4807 leaf = ztest_random(leaves) + zs->zs_splits;
4808
4809 /*
4810 * Generate paths to the first leaf in this top-level vdev,
4811 * and to the random leaf we selected. We'll induce transient
4812 * write failures and random online/offline activity on leaf 0,
4813 * and we'll write random garbage to the randomly chosen leaf.
4814 */
4815 (void) snprintf(path0, sizeof (path0), ztest_dev_template,
4816 ztest_opts.zo_dir, ztest_opts.zo_pool,
4817 top * leaves + zs->zs_splits);
4818 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template,
4819 ztest_opts.zo_dir, ztest_opts.zo_pool,
4820 top * leaves + leaf);
4821
4822 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
4823 if (vd0 != NULL && vd0->vdev_top->vdev_islog)
4824 islog = B_TRUE;
4825
4826 /*
4827 * If the top-level vdev needs to be resilvered
4828 * then we only allow faults on the device that is
4829 * resilvering.
4830 */
4831 if (vd0 != NULL && maxfaults != 1 &&
4832 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
4833 vd0->vdev_resilver_txg != 0)) {
4834 /*
4835 * Make vd0 explicitly claim to be unreadable,
4836 * or unwriteable, or reach behind its back
4837 * and close the underlying fd. We can do this if
4838 * maxfaults == 0 because we'll fail and reexecute,
4839 * and we can do it if maxfaults >= 2 because we'll
4840 * have enough redundancy. If maxfaults == 1, the
4841 * combination of this with injection of random data
4842 * corruption below exceeds the pool's fault tolerance.
4843 */
4844 vdev_file_t *vf = vd0->vdev_tsd;
4845
4846 if (vf != NULL && ztest_random(3) == 0) {
4847 (void) close(vf->vf_vnode->v_fd);
4848 vf->vf_vnode->v_fd = -1;
4849 } else if (ztest_random(2) == 0) {
4850 vd0->vdev_cant_read = B_TRUE;
4851 } else {
4852 vd0->vdev_cant_write = B_TRUE;
4853 }
4854 guid0 = vd0->vdev_guid;
4855 }
4856 } else {
4857 /*
4858 * Inject errors on an l2cache device.
4859 */
4860 spa_aux_vdev_t *sav = &spa->spa_l2cache;
4861
4862 if (sav->sav_count == 0) {
4863 spa_config_exit(spa, SCL_STATE, FTAG);
4864 (void) rw_unlock(&ztest_name_lock);
4865 return;
4866 }
4867 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
4868 guid0 = vd0->vdev_guid;
4869 (void) strcpy(path0, vd0->vdev_path);
4870 (void) strcpy(pathrand, vd0->vdev_path);
4871
4872 leaf = 0;
4873 leaves = 1;
4874 maxfaults = INT_MAX; /* no limit on cache devices */
4875 }
4876
4877 spa_config_exit(spa, SCL_STATE, FTAG);
4878 (void) rw_unlock(&ztest_name_lock);
4879
4880 /*
4881 * If we can tolerate two or more faults, or we're dealing
4882 * with a slog, randomly online/offline vd0.
4883 */
4884 if ((maxfaults >= 2 || islog) && guid0 != 0) {
4885 if (ztest_random(10) < 6) {
4886 int flags = (ztest_random(2) == 0 ?
4887 ZFS_OFFLINE_TEMPORARY : 0);
4888
4889 /*
4890 * We have to grab the zs_name_lock as writer to
4891 * prevent a race between offlining a slog and
4892 * destroying a dataset. Offlining the slog will
4893 * grab a reference on the dataset which may cause
4894 * dmu_objset_destroy() to fail with EBUSY thus
4895 * leaving the dataset in an inconsistent state.
4896 */
4897 if (islog)
4898 (void) rw_wrlock(&ztest_name_lock);
4899
4900 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
4901
4902 if (islog)
4903 (void) rw_unlock(&ztest_name_lock);
4904 } else {
4905 /*
4906 * Ideally we would like to be able to randomly
4907 * call vdev_[on|off]line without holding locks
4908 * to force unpredictable failures but the side
4909 * effects of vdev_[on|off]line prevent us from
4910 * doing so. We grab the ztest_vdev_lock here to
4911 * prevent a race between injection testing and
4912 * aux_vdev removal.
4913 */
4914 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4915 (void) vdev_online(spa, guid0, 0, NULL);
4916 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4917 }
4918 }
4919
4920 if (maxfaults == 0)
4921 return;
4922
4923 /*
4924 * We have at least single-fault tolerance, so inject data corruption.
4925 */
4926 fd = open(pathrand, O_RDWR);
4927
4928 if (fd == -1) /* we hit a gap in the device namespace */
4929 return;
4930
4931 fsize = lseek(fd, 0, SEEK_END);
4932
4933 while (--iters != 0) {
4934 offset = ztest_random(fsize / (leaves << bshift)) *
4935 (leaves << bshift) + (leaf << bshift) +
4936 (ztest_random(1ULL << (bshift - 1)) & -8ULL);
4937
4938 if (offset >= fsize)
4939 continue;
4940
4941 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4942 if (mirror_save != zs->zs_mirrors) {
4943 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4944 (void) close(fd);
4945 return;
4946 }
4947
4948 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
4949 fatal(1, "can't inject bad word at 0x%llx in %s",
4950 offset, pathrand);
4951
4952 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4953
4954 if (ztest_opts.zo_verbose >= 7)
4955 (void) printf("injected bad word into %s,"
4956 " offset 0x%llx\n", pathrand, (u_longlong_t)offset);
4957 }
4958
4959 (void) close(fd);
4960 }
4961
4962 /*
4963 * Verify that DDT repair works as expected.
4964 */
4965 void
4966 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
4967 {
4968 ztest_shared_t *zs = ztest_shared;
4969 spa_t *spa = ztest_spa;
4970 objset_t *os = zd->zd_os;
4971 ztest_od_t od[1];
4972 uint64_t object, blocksize, txg, pattern, psize;
4973 enum zio_checksum checksum = spa_dedup_checksum(spa);
4974 dmu_buf_t *db;
4975 dmu_tx_t *tx;
4976 void *buf;
4977 blkptr_t blk;
4978 int copies = 2 * ZIO_DEDUPDITTO_MIN;
4979
4980 blocksize = ztest_random_blocksize();
4981 blocksize = MIN(blocksize, 2048); /* because we write so many */
4982
4983 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4984
4985 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4986 return;
4987
4988 /*
4989 * Take the name lock as writer to prevent anyone else from changing
4990 * the pool and dataset properies we need to maintain during this test.
4991 */
4992 (void) rw_wrlock(&ztest_name_lock);
4993
4994 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
4995 B_FALSE) != 0 ||
4996 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
4997 B_FALSE) != 0) {
4998 (void) rw_unlock(&ztest_name_lock);
4999 return;
5000 }
5001
5002 object = od[0].od_object;
5003 blocksize = od[0].od_blocksize;
5004 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os);
5005
5006 ASSERT(object != 0);
5007
5008 tx = dmu_tx_create(os);
5009 dmu_tx_hold_write(tx, object, 0, copies * blocksize);
5010 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
5011 if (txg == 0) {
5012 (void) rw_unlock(&ztest_name_lock);
5013 return;
5014 }
5015
5016 /*
5017 * Write all the copies of our block.
5018 */
5019 for (int i = 0; i < copies; i++) {
5020 uint64_t offset = i * blocksize;
5021 int error = dmu_buf_hold(os, object, offset, FTAG, &db,
5022 DMU_READ_NO_PREFETCH);
5023 if (error != 0) {
5024 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u",
5025 os, (long long)object, (long long) offset, error);
5026 }
5027 ASSERT(db->db_offset == offset);
5028 ASSERT(db->db_size == blocksize);
5029 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) ||
5030 ztest_pattern_match(db->db_data, db->db_size, 0ULL));
5031 dmu_buf_will_fill(db, tx);
5032 ztest_pattern_set(db->db_data, db->db_size, pattern);
5033 dmu_buf_rele(db, FTAG);
5034 }
5035
5036 dmu_tx_commit(tx);
5037 txg_wait_synced(spa_get_dsl(spa), txg);
5038
5039 /*
5040 * Find out what block we got.
5041 */
5042 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db,
5043 DMU_READ_NO_PREFETCH));
5044 blk = *((dmu_buf_impl_t *)db)->db_blkptr;
5045 dmu_buf_rele(db, FTAG);
5046
5047 /*
5048 * Damage the block. Dedup-ditto will save us when we read it later.
5049 */
5050 psize = BP_GET_PSIZE(&blk);
5051 buf = zio_buf_alloc(psize);
5052 ztest_pattern_set(buf, psize, ~pattern);
5053
5054 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk,
5055 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE,
5056 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL));
5057
5058 zio_buf_free(buf, psize);
5059
5060 (void) rw_unlock(&ztest_name_lock);
5061 }
5062
5063 /*
5064 * Scrub the pool.
5065 */
5066 /* ARGSUSED */
5067 void
5068 ztest_scrub(ztest_ds_t *zd, uint64_t id)
5069 {
5070 spa_t *spa = ztest_spa;
5071
5072 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5073 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */
5074 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5075 }
5076
5077 /*
5078 * Change the guid for the pool.
5079 */
5080 /* ARGSUSED */
5081 void
5082 ztest_reguid(ztest_ds_t *zd, uint64_t id)
5083 {
5084 spa_t *spa = ztest_spa;
5085 uint64_t orig, load;
5086 int error;
5087
5088 orig = spa_guid(spa);
5089 load = spa_load_guid(spa);
5090
5091 (void) rw_wrlock(&ztest_name_lock);
5092 error = spa_change_guid(spa);
5093 (void) rw_unlock(&ztest_name_lock);
5094
5095 if (error != 0)
5096 return;
5097
5098 if (ztest_opts.zo_verbose >= 4) {
5099 (void) printf("Changed guid old %llu -> %llu\n",
5100 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa));
5101 }
5102
5103 VERIFY3U(orig, !=, spa_guid(spa));
5104 VERIFY3U(load, ==, spa_load_guid(spa));
5105 }
5106
5107 /*
5108 * Rename the pool to a different name and then rename it back.
5109 */
5110 /* ARGSUSED */
5111 void
5112 ztest_spa_rename(ztest_ds_t *zd, uint64_t id)
5113 {
5114 char *oldname, *newname;
5115 spa_t *spa;
5116
5117 (void) rw_wrlock(&ztest_name_lock);
5118
5119 oldname = ztest_opts.zo_pool;
5120 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL);
5121 (void) strcpy(newname, oldname);
5122 (void) strcat(newname, "_tmp");
5123
5124 /*
5125 * Do the rename
5126 */
5127 VERIFY3U(0, ==, spa_rename(oldname, newname));
5128
5129 /*
5130 * Try to open it under the old name, which shouldn't exist
5131 */
5132 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5133
5134 /*
5135 * Open it under the new name and make sure it's still the same spa_t.
5136 */
5137 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5138
5139 ASSERT(spa == ztest_spa);
5140 spa_close(spa, FTAG);
5141
5142 /*
5143 * Rename it back to the original
5144 */
5145 VERIFY3U(0, ==, spa_rename(newname, oldname));
5146
5147 /*
5148 * Make sure it can still be opened
5149 */
5150 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5151
5152 ASSERT(spa == ztest_spa);
5153 spa_close(spa, FTAG);
5154
5155 umem_free(newname, strlen(newname) + 1);
5156
5157 (void) rw_unlock(&ztest_name_lock);
5158 }
5159
5160 /*
5161 * Verify pool integrity by running zdb.
5162 */
5163 static void
5164 ztest_run_zdb(char *pool)
5165 {
5166 int status;
5167 char zdb[MAXPATHLEN + MAXNAMELEN + 20];
5168 char zbuf[1024];
5169 char *bin;
5170 char *ztest;
5171 char *isa;
5172 int isalen;
5173 FILE *fp;
5174
5175 (void) realpath(getexecname(), zdb);
5176
5177 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */
5178 bin = strstr(zdb, "/usr/bin/");
5179 ztest = strstr(bin, "/ztest");
5180 isa = bin + 8;
5181 isalen = ztest - isa;
5182 isa = strdup(isa);
5183 /* LINTED */
5184 (void) sprintf(bin,
5185 "/usr/sbin%.*s/zdb -bcc%s%s -d -U %s %s",
5186 isalen,
5187 isa,
5188 ztest_opts.zo_verbose >= 3 ? "s" : "",
5189 ztest_opts.zo_verbose >= 4 ? "v" : "",
5190 spa_config_path,
5191 pool);
5192 free(isa);
5193
5194 if (ztest_opts.zo_verbose >= 5)
5195 (void) printf("Executing %s\n", strstr(zdb, "zdb "));
5196
5197 fp = popen(zdb, "r");
5198
5199 while (fgets(zbuf, sizeof (zbuf), fp) != NULL)
5200 if (ztest_opts.zo_verbose >= 3)
5201 (void) printf("%s", zbuf);
5202
5203 status = pclose(fp);
5204
5205 if (status == 0)
5206 return;
5207
5208 ztest_dump_core = 0;
5209 if (WIFEXITED(status))
5210 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status));
5211 else
5212 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status));
5213 }
5214
5215 static void
5216 ztest_walk_pool_directory(char *header)
5217 {
5218 spa_t *spa = NULL;
5219
5220 if (ztest_opts.zo_verbose >= 6)
5221 (void) printf("%s\n", header);
5222
5223 mutex_enter(&spa_namespace_lock);
5224 while ((spa = spa_next(spa)) != NULL)
5225 if (ztest_opts.zo_verbose >= 6)
5226 (void) printf("\t%s\n", spa_name(spa));
5227 mutex_exit(&spa_namespace_lock);
5228 }
5229
5230 static void
5231 ztest_spa_import_export(char *oldname, char *newname)
5232 {
5233 nvlist_t *config, *newconfig;
5234 uint64_t pool_guid;
5235 spa_t *spa;
5236 int error;
5237
5238 if (ztest_opts.zo_verbose >= 4) {
5239 (void) printf("import/export: old = %s, new = %s\n",
5240 oldname, newname);
5241 }
5242
5243 /*
5244 * Clean up from previous runs.
5245 */
5246 (void) spa_destroy(newname);
5247
5248 /*
5249 * Get the pool's configuration and guid.
5250 */
5251 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5252
5253 /*
5254 * Kick off a scrub to tickle scrub/export races.
5255 */
5256 if (ztest_random(2) == 0)
5257 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5258
5259 pool_guid = spa_guid(spa);
5260 spa_close(spa, FTAG);
5261
5262 ztest_walk_pool_directory("pools before export");
5263
5264 /*
5265 * Export it.
5266 */
5267 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE));
5268
5269 ztest_walk_pool_directory("pools after export");
5270
5271 /*
5272 * Try to import it.
5273 */
5274 newconfig = spa_tryimport(config);
5275 ASSERT(newconfig != NULL);
5276 nvlist_free(newconfig);
5277
5278 /*
5279 * Import it under the new name.
5280 */
5281 error = spa_import(newname, config, NULL, 0);
5282 if (error != 0) {
5283 dump_nvlist(config, 0);
5284 fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
5285 oldname, newname, error);
5286 }
5287
5288 ztest_walk_pool_directory("pools after import");
5289
5290 /*
5291 * Try to import it again -- should fail with EEXIST.
5292 */
5293 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
5294
5295 /*
5296 * Try to import it under a different name -- should fail with EEXIST.
5297 */
5298 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
5299
5300 /*
5301 * Verify that the pool is no longer visible under the old name.
5302 */
5303 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5304
5305 /*
5306 * Verify that we can open and close the pool using the new name.
5307 */
5308 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5309 ASSERT(pool_guid == spa_guid(spa));
5310 spa_close(spa, FTAG);
5311
5312 nvlist_free(config);
5313 }
5314
5315 static void
5316 ztest_resume(spa_t *spa)
5317 {
5318 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
5319 (void) printf("resuming from suspended state\n");
5320 spa_vdev_state_enter(spa, SCL_NONE);
5321 vdev_clear(spa, NULL);
5322 (void) spa_vdev_state_exit(spa, NULL, 0);
5323 (void) zio_resume(spa);
5324 }
5325
5326 static void *
5327 ztest_resume_thread(void *arg)
5328 {
5329 spa_t *spa = arg;
5330
5331 while (!ztest_exiting) {
5332 if (spa_suspended(spa))
5333 ztest_resume(spa);
5334 (void) poll(NULL, 0, 100);
5335 }
5336 return (NULL);
5337 }
5338
5339 static void *
5340 ztest_deadman_thread(void *arg)
5341 {
5342 ztest_shared_t *zs = arg;
5343 spa_t *spa = ztest_spa;
5344 hrtime_t delta, total = 0;
5345
5346 for (;;) {
5347 delta = zs->zs_thread_stop - zs->zs_thread_start +
5348 MSEC2NSEC(zfs_deadman_synctime_ms);
5349
5350 (void) poll(NULL, 0, (int)NSEC2MSEC(delta));
5351
5352 /*
5353 * If the pool is suspended then fail immediately. Otherwise,
5354 * check to see if the pool is making any progress. If
5355 * vdev_deadman() discovers that there hasn't been any recent
5356 * I/Os then it will end up aborting the tests.
5357 */
5358 if (spa_suspended(spa) || spa->spa_root_vdev == NULL) {
5359 fatal(0, "aborting test after %llu seconds because "
5360 "pool has transitioned to a suspended state.",
5361 zfs_deadman_synctime_ms / 1000);
5362 return (NULL);
5363 }
5364 vdev_deadman(spa->spa_root_vdev);
5365
5366 total += zfs_deadman_synctime_ms/1000;
5367 (void) printf("ztest has been running for %lld seconds\n",
5368 total);
5369 }
5370 }
5371
5372 static void
5373 ztest_execute(int test, ztest_info_t *zi, uint64_t id)
5374 {
5375 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
5376 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
5377 hrtime_t functime = gethrtime();
5378
5379 for (int i = 0; i < zi->zi_iters; i++)
5380 zi->zi_func(zd, id);
5381
5382 functime = gethrtime() - functime;
5383
5384 atomic_add_64(&zc->zc_count, 1);
5385 atomic_add_64(&zc->zc_time, functime);
5386
5387 if (ztest_opts.zo_verbose >= 4) {
5388 Dl_info dli;
5389 (void) dladdr((void *)zi->zi_func, &dli);
5390 (void) printf("%6.2f sec in %s\n",
5391 (double)functime / NANOSEC, dli.dli_sname);
5392 }
5393 }
5394
5395 static void *
5396 ztest_thread(void *arg)
5397 {
5398 int rand;
5399 uint64_t id = (uintptr_t)arg;
5400 ztest_shared_t *zs = ztest_shared;
5401 uint64_t call_next;
5402 hrtime_t now;
5403 ztest_info_t *zi;
5404 ztest_shared_callstate_t *zc;
5405
5406 while ((now = gethrtime()) < zs->zs_thread_stop) {
5407 /*
5408 * See if it's time to force a crash.
5409 */
5410 if (now > zs->zs_thread_kill)
5411 ztest_kill(zs);
5412
5413 /*
5414 * If we're getting ENOSPC with some regularity, stop.
5415 */
5416 if (zs->zs_enospc_count > 10)
5417 break;
5418
5419 /*
5420 * Pick a random function to execute.
5421 */
5422 rand = ztest_random(ZTEST_FUNCS);
5423 zi = &ztest_info[rand];
5424 zc = ZTEST_GET_SHARED_CALLSTATE(rand);
5425 call_next = zc->zc_next;
5426
5427 if (now >= call_next &&
5428 atomic_cas_64(&zc->zc_next, call_next, call_next +
5429 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
5430 ztest_execute(rand, zi, id);
5431 }
5432 }
5433
5434 return (NULL);
5435 }
5436
5437 static void
5438 ztest_dataset_name(char *dsname, char *pool, int d)
5439 {
5440 (void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d);
5441 }
5442
5443 static void
5444 ztest_dataset_destroy(int d)
5445 {
5446 char name[MAXNAMELEN];
5447
5448 ztest_dataset_name(name, ztest_opts.zo_pool, d);
5449
5450 if (ztest_opts.zo_verbose >= 3)
5451 (void) printf("Destroying %s to free up space\n", name);
5452
5453 /*
5454 * Cleanup any non-standard clones and snapshots. In general,
5455 * ztest thread t operates on dataset (t % zopt_datasets),
5456 * so there may be more than one thing to clean up.
5457 */
5458 for (int t = d; t < ztest_opts.zo_threads;
5459 t += ztest_opts.zo_datasets) {
5460 ztest_dsl_dataset_cleanup(name, t);
5461 }
5462
5463 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
5464 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
5465 }
5466
5467 static void
5468 ztest_dataset_dirobj_verify(ztest_ds_t *zd)
5469 {
5470 uint64_t usedobjs, dirobjs, scratch;
5471
5472 /*
5473 * ZTEST_DIROBJ is the object directory for the entire dataset.
5474 * Therefore, the number of objects in use should equal the
5475 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
5476 * If not, we have an object leak.
5477 *
5478 * Note that we can only check this in ztest_dataset_open(),
5479 * when the open-context and syncing-context values agree.
5480 * That's because zap_count() returns the open-context value,
5481 * while dmu_objset_space() returns the rootbp fill count.
5482 */
5483 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
5484 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
5485 ASSERT3U(dirobjs + 1, ==, usedobjs);
5486 }
5487
5488 static int
5489 ztest_dataset_open(int d)
5490 {
5491 ztest_ds_t *zd = &ztest_ds[d];
5492 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
5493 objset_t *os;
5494 zilog_t *zilog;
5495 char name[MAXNAMELEN];
5496 int error;
5497
5498 ztest_dataset_name(name, ztest_opts.zo_pool, d);
5499
5500 (void) rw_rdlock(&ztest_name_lock);
5501
5502 error = ztest_dataset_create(name);
5503 if (error == ENOSPC) {
5504 (void) rw_unlock(&ztest_name_lock);
5505 ztest_record_enospc(FTAG);
5506 return (error);
5507 }
5508 ASSERT(error == 0 || error == EEXIST);
5509
5510 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os));
5511 (void) rw_unlock(&ztest_name_lock);
5512
5513 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
5514
5515 zilog = zd->zd_zilog;
5516
5517 if (zilog->zl_header->zh_claim_lr_seq != 0 &&
5518 zilog->zl_header->zh_claim_lr_seq < committed_seq)
5519 fatal(0, "missing log records: claimed %llu < committed %llu",
5520 zilog->zl_header->zh_claim_lr_seq, committed_seq);
5521
5522 ztest_dataset_dirobj_verify(zd);
5523
5524 zil_replay(os, zd, ztest_replay_vector);
5525
5526 ztest_dataset_dirobj_verify(zd);
5527
5528 if (ztest_opts.zo_verbose >= 6)
5529 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n",
5530 zd->zd_name,
5531 (u_longlong_t)zilog->zl_parse_blk_count,
5532 (u_longlong_t)zilog->zl_parse_lr_count,
5533 (u_longlong_t)zilog->zl_replaying_seq);
5534
5535 zilog = zil_open(os, ztest_get_data);
5536
5537 if (zilog->zl_replaying_seq != 0 &&
5538 zilog->zl_replaying_seq < committed_seq)
5539 fatal(0, "missing log records: replayed %llu < committed %llu",
5540 zilog->zl_replaying_seq, committed_seq);
5541
5542 return (0);
5543 }
5544
5545 static void
5546 ztest_dataset_close(int d)
5547 {
5548 ztest_ds_t *zd = &ztest_ds[d];
5549
5550 zil_close(zd->zd_zilog);
5551 dmu_objset_disown(zd->zd_os, zd);
5552
5553 ztest_zd_fini(zd);
5554 }
5555
5556 /*
5557 * Kick off threads to run tests on all datasets in parallel.
5558 */
5559 static void
5560 ztest_run(ztest_shared_t *zs)
5561 {
5562 thread_t *tid;
5563 spa_t *spa;
5564 objset_t *os;
5565 thread_t resume_tid;
5566 int error;
5567
5568 ztest_exiting = B_FALSE;
5569
5570 /*
5571 * Initialize parent/child shared state.
5572 */
5573 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5574 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5575
5576 zs->zs_thread_start = gethrtime();
5577 zs->zs_thread_stop =
5578 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
5579 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
5580 zs->zs_thread_kill = zs->zs_thread_stop;
5581 if (ztest_random(100) < ztest_opts.zo_killrate) {
5582 zs->zs_thread_kill -=
5583 ztest_random(ztest_opts.zo_passtime * NANOSEC);
5584 }
5585
5586 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL);
5587
5588 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
5589 offsetof(ztest_cb_data_t, zcd_node));
5590
5591 /*
5592 * Open our pool.
5593 */
5594 kernel_init(FREAD | FWRITE);
5595 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
5596 spa->spa_debug = B_TRUE;
5597 metaslab_preload_limit = ztest_random(20) + 1;
5598 ztest_spa = spa;
5599
5600 VERIFY0(dmu_objset_own(ztest_opts.zo_pool,
5601 DMU_OST_ANY, B_TRUE, FTAG, &os));
5602 zs->zs_guid = dmu_objset_fsid_guid(os);
5603 dmu_objset_disown(os, FTAG);
5604
5605 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN;
5606
5607 /*
5608 * We don't expect the pool to suspend unless maxfaults == 0,
5609 * in which case ztest_fault_inject() temporarily takes away
5610 * the only valid replica.
5611 */
5612 if (MAXFAULTS() == 0)
5613 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT;
5614 else
5615 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC;
5616
5617 /*
5618 * Create a thread to periodically resume suspended I/O.
5619 */
5620 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND,
5621 &resume_tid) == 0);
5622
5623 /*
5624 * Create a deadman thread to abort() if we hang.
5625 */
5626 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND,
5627 NULL) == 0);
5628
5629 /*
5630 * Verify that we can safely inquire about about any object,
5631 * whether it's allocated or not. To make it interesting,
5632 * we probe a 5-wide window around each power of two.
5633 * This hits all edge cases, including zero and the max.
5634 */
5635 for (int t = 0; t < 64; t++) {
5636 for (int d = -5; d <= 5; d++) {
5637 error = dmu_object_info(spa->spa_meta_objset,
5638 (1ULL << t) + d, NULL);
5639 ASSERT(error == 0 || error == ENOENT ||
5640 error == EINVAL);
5641 }
5642 }
5643
5644 /*
5645 * If we got any ENOSPC errors on the previous run, destroy something.
5646 */
5647 if (zs->zs_enospc_count != 0) {
5648 int d = ztest_random(ztest_opts.zo_datasets);
5649 ztest_dataset_destroy(d);
5650 }
5651 zs->zs_enospc_count = 0;
5652
5653 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t),
5654 UMEM_NOFAIL);
5655
5656 if (ztest_opts.zo_verbose >= 4)
5657 (void) printf("starting main threads...\n");
5658
5659 /*
5660 * Kick off all the tests that run in parallel.
5661 */
5662 for (int t = 0; t < ztest_opts.zo_threads; t++) {
5663 if (t < ztest_opts.zo_datasets &&
5664 ztest_dataset_open(t) != 0)
5665 return;
5666 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
5667 THR_BOUND, &tid[t]) == 0);
5668 }
5669
5670 /*
5671 * Wait for all of the tests to complete. We go in reverse order
5672 * so we don't close datasets while threads are still using them.
5673 */
5674 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) {
5675 VERIFY(thr_join(tid[t], NULL, NULL) == 0);
5676 if (t < ztest_opts.zo_datasets)
5677 ztest_dataset_close(t);
5678 }
5679
5680 txg_wait_synced(spa_get_dsl(spa), 0);
5681
5682 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
5683 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
5684 zfs_dbgmsg_print(FTAG);
5685
5686 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t));
5687
5688 /* Kill the resume thread */
5689 ztest_exiting = B_TRUE;
5690 VERIFY(thr_join(resume_tid, NULL, NULL) == 0);
5691 ztest_resume(spa);
5692
5693 /*
5694 * Right before closing the pool, kick off a bunch of async I/O;
5695 * spa_close() should wait for it to complete.
5696 */
5697 for (uint64_t object = 1; object < 50; object++)
5698 dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20);
5699
5700 spa_close(spa, FTAG);
5701
5702 /*
5703 * Verify that we can loop over all pools.
5704 */
5705 mutex_enter(&spa_namespace_lock);
5706 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
5707 if (ztest_opts.zo_verbose > 3)
5708 (void) printf("spa_next: found %s\n", spa_name(spa));
5709 mutex_exit(&spa_namespace_lock);
5710
5711 /*
5712 * Verify that we can export the pool and reimport it under a
5713 * different name.
5714 */
5715 if (ztest_random(2) == 0) {
5716 char name[MAXNAMELEN];
5717 (void) snprintf(name, MAXNAMELEN, "%s_import",
5718 ztest_opts.zo_pool);
5719 ztest_spa_import_export(ztest_opts.zo_pool, name);
5720 ztest_spa_import_export(name, ztest_opts.zo_pool);
5721 }
5722
5723 kernel_fini();
5724
5725 list_destroy(&zcl.zcl_callbacks);
5726
5727 (void) _mutex_destroy(&zcl.zcl_callbacks_lock);
5728
5729 (void) rwlock_destroy(&ztest_name_lock);
5730 (void) _mutex_destroy(&ztest_vdev_lock);
5731 }
5732
5733 static void
5734 ztest_freeze(void)
5735 {
5736 ztest_ds_t *zd = &ztest_ds[0];
5737 spa_t *spa;
5738 int numloops = 0;
5739
5740 if (ztest_opts.zo_verbose >= 3)
5741 (void) printf("testing spa_freeze()...\n");
5742
5743 kernel_init(FREAD | FWRITE);
5744 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5745 VERIFY3U(0, ==, ztest_dataset_open(0));
5746 spa->spa_debug = B_TRUE;
5747 ztest_spa = spa;
5748
5749 /*
5750 * Force the first log block to be transactionally allocated.
5751 * We have to do this before we freeze the pool -- otherwise
5752 * the log chain won't be anchored.
5753 */
5754 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
5755 ztest_dmu_object_alloc_free(zd, 0);
5756 zil_commit(zd->zd_zilog, 0);
5757 }
5758
5759 txg_wait_synced(spa_get_dsl(spa), 0);
5760
5761 /*
5762 * Freeze the pool. This stops spa_sync() from doing anything,
5763 * so that the only way to record changes from now on is the ZIL.
5764 */
5765 spa_freeze(spa);
5766
5767 /*
5768 * Run tests that generate log records but don't alter the pool config
5769 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
5770 * We do a txg_wait_synced() after each iteration to force the txg
5771 * to increase well beyond the last synced value in the uberblock.
5772 * The ZIL should be OK with that.
5773 */
5774 while (ztest_random(10) != 0 &&
5775 numloops++ < ztest_opts.zo_maxloops) {
5776 ztest_dmu_write_parallel(zd, 0);
5777 ztest_dmu_object_alloc_free(zd, 0);
5778 txg_wait_synced(spa_get_dsl(spa), 0);
5779 }
5780
5781 /*
5782 * Commit all of the changes we just generated.
5783 */
5784 zil_commit(zd->zd_zilog, 0);
5785 txg_wait_synced(spa_get_dsl(spa), 0);
5786
5787 /*
5788 * Close our dataset and close the pool.
5789 */
5790 ztest_dataset_close(0);
5791 spa_close(spa, FTAG);
5792 kernel_fini();
5793
5794 /*
5795 * Open and close the pool and dataset to induce log replay.
5796 */
5797 kernel_init(FREAD | FWRITE);
5798 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5799 ASSERT(spa_freeze_txg(spa) == UINT64_MAX);
5800 VERIFY3U(0, ==, ztest_dataset_open(0));
5801 ztest_dataset_close(0);
5802
5803 spa->spa_debug = B_TRUE;
5804 ztest_spa = spa;
5805 txg_wait_synced(spa_get_dsl(spa), 0);
5806 ztest_reguid(NULL, 0);
5807
5808 spa_close(spa, FTAG);
5809 kernel_fini();
5810 }
5811
5812 void
5813 print_time(hrtime_t t, char *timebuf)
5814 {
5815 hrtime_t s = t / NANOSEC;
5816 hrtime_t m = s / 60;
5817 hrtime_t h = m / 60;
5818 hrtime_t d = h / 24;
5819
5820 s -= m * 60;
5821 m -= h * 60;
5822 h -= d * 24;
5823
5824 timebuf[0] = '\0';
5825
5826 if (d)
5827 (void) sprintf(timebuf,
5828 "%llud%02lluh%02llum%02llus", d, h, m, s);
5829 else if (h)
5830 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
5831 else if (m)
5832 (void) sprintf(timebuf, "%llum%02llus", m, s);
5833 else
5834 (void) sprintf(timebuf, "%llus", s);
5835 }
5836
5837 static nvlist_t *
5838 make_random_props()
5839 {
5840 nvlist_t *props;
5841
5842 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
5843 if (ztest_random(2) == 0)
5844 return (props);
5845 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0);
5846
5847 return (props);
5848 }
5849
5850 /*
5851 * Create a storage pool with the given name and initial vdev size.
5852 * Then test spa_freeze() functionality.
5853 */
5854 static void
5855 ztest_init(ztest_shared_t *zs)
5856 {
5857 spa_t *spa;
5858 nvlist_t *nvroot, *props;
5859
5860 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5861 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5862
5863 kernel_init(FREAD | FWRITE);
5864
5865 /*
5866 * Create the storage pool.
5867 */
5868 (void) spa_destroy(ztest_opts.zo_pool);
5869 ztest_shared->zs_vdev_next_leaf = 0;
5870 zs->zs_splits = 0;
5871 zs->zs_mirrors = ztest_opts.zo_mirrors;
5872 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
5873 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
5874 props = make_random_props();
5875 for (int i = 0; i < SPA_FEATURES; i++) {
5876 char buf[1024];
5877 (void) snprintf(buf, sizeof (buf), "feature@%s",
5878 spa_feature_table[i].fi_uname);
5879 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0));
5880 }
5881 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL));
5882 nvlist_free(nvroot);
5883
5884 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5885 zs->zs_metaslab_sz =
5886 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
5887
5888 spa_close(spa, FTAG);
5889
5890 kernel_fini();
5891
5892 ztest_run_zdb(ztest_opts.zo_pool);
5893
5894 ztest_freeze();
5895
5896 ztest_run_zdb(ztest_opts.zo_pool);
5897
5898 (void) rwlock_destroy(&ztest_name_lock);
5899 (void) _mutex_destroy(&ztest_vdev_lock);
5900 }
5901
5902 static void
5903 setup_data_fd(void)
5904 {
5905 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
5906
5907 ztest_fd_data = mkstemp(ztest_name_data);
5908 ASSERT3S(ztest_fd_data, >=, 0);
5909 (void) unlink(ztest_name_data);
5910 }
5911
5912
5913 static int
5914 shared_data_size(ztest_shared_hdr_t *hdr)
5915 {
5916 int size;
5917
5918 size = hdr->zh_hdr_size;
5919 size += hdr->zh_opts_size;
5920 size += hdr->zh_size;
5921 size += hdr->zh_stats_size * hdr->zh_stats_count;
5922 size += hdr->zh_ds_size * hdr->zh_ds_count;
5923
5924 return (size);
5925 }
5926
5927 static void
5928 setup_hdr(void)
5929 {
5930 int size;
5931 ztest_shared_hdr_t *hdr;
5932
5933 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
5934 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
5935 ASSERT(hdr != MAP_FAILED);
5936
5937 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
5938
5939 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
5940 hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
5941 hdr->zh_size = sizeof (ztest_shared_t);
5942 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
5943 hdr->zh_stats_count = ZTEST_FUNCS;
5944 hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
5945 hdr->zh_ds_count = ztest_opts.zo_datasets;
5946
5947 size = shared_data_size(hdr);
5948 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size));
5949
5950 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
5951 }
5952
5953 static void
5954 setup_data(void)
5955 {
5956 int size, offset;
5957 ztest_shared_hdr_t *hdr;
5958 uint8_t *buf;
5959
5960 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
5961 PROT_READ, MAP_SHARED, ztest_fd_data, 0);
5962 ASSERT(hdr != MAP_FAILED);
5963
5964 size = shared_data_size(hdr);
5965
5966 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
5967 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
5968 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
5969 ASSERT(hdr != MAP_FAILED);
5970 buf = (uint8_t *)hdr;
5971
5972 offset = hdr->zh_hdr_size;
5973 ztest_shared_opts = (void *)&buf[offset];
5974 offset += hdr->zh_opts_size;
5975 ztest_shared = (void *)&buf[offset];
5976 offset += hdr->zh_size;
5977 ztest_shared_callstate = (void *)&buf[offset];
5978 offset += hdr->zh_stats_size * hdr->zh_stats_count;
5979 ztest_shared_ds = (void *)&buf[offset];
5980 }
5981
5982 static boolean_t
5983 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
5984 {
5985 pid_t pid;
5986 int status;
5987 char *cmdbuf = NULL;
5988
5989 pid = fork();
5990
5991 if (cmd == NULL) {
5992 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
5993 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
5994 cmd = cmdbuf;
5995 }
5996
5997 if (pid == -1)
5998 fatal(1, "fork failed");
5999
6000 if (pid == 0) { /* child */
6001 char *emptyargv[2] = { cmd, NULL };
6002 char fd_data_str[12];
6003
6004 struct rlimit rl = { 1024, 1024 };
6005 (void) setrlimit(RLIMIT_NOFILE, &rl);
6006
6007 (void) close(ztest_fd_rand);
6008 VERIFY3U(11, >=,
6009 snprintf(fd_data_str, 12, "%d", ztest_fd_data));
6010 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
6011
6012 (void) enable_extended_FILE_stdio(-1, -1);
6013 if (libpath != NULL)
6014 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1));
6015 (void) execv(cmd, emptyargv);
6016 ztest_dump_core = B_FALSE;
6017 fatal(B_TRUE, "exec failed: %s", cmd);
6018 }
6019
6020 if (cmdbuf != NULL) {
6021 umem_free(cmdbuf, MAXPATHLEN);
6022 cmd = NULL;
6023 }
6024
6025 while (waitpid(pid, &status, 0) != pid)
6026 continue;
6027 if (statusp != NULL)
6028 *statusp = status;
6029
6030 if (WIFEXITED(status)) {
6031 if (WEXITSTATUS(status) != 0) {
6032 (void) fprintf(stderr, "child exited with code %d\n",
6033 WEXITSTATUS(status));
6034 exit(2);
6035 }
6036 return (B_FALSE);
6037 } else if (WIFSIGNALED(status)) {
6038 if (!ignorekill || WTERMSIG(status) != SIGKILL) {
6039 (void) fprintf(stderr, "child died with signal %d\n",
6040 WTERMSIG(status));
6041 exit(3);
6042 }
6043 return (B_TRUE);
6044 } else {
6045 (void) fprintf(stderr, "something strange happened to child\n");
6046 exit(4);
6047 /* NOTREACHED */
6048 }
6049 }
6050
6051 static void
6052 ztest_run_init(void)
6053 {
6054 ztest_shared_t *zs = ztest_shared;
6055
6056 ASSERT(ztest_opts.zo_init != 0);
6057
6058 /*
6059 * Blow away any existing copy of zpool.cache
6060 */
6061 (void) remove(spa_config_path);
6062
6063 /*
6064 * Create and initialize our storage pool.
6065 */
6066 for (int i = 1; i <= ztest_opts.zo_init; i++) {
6067 bzero(zs, sizeof (ztest_shared_t));
6068 if (ztest_opts.zo_verbose >= 3 &&
6069 ztest_opts.zo_init != 1) {
6070 (void) printf("ztest_init(), pass %d\n", i);
6071 }
6072 ztest_init(zs);
6073 }
6074 }
6075
6076 int
6077 main(int argc, char **argv)
6078 {
6079 int kills = 0;
6080 int iters = 0;
6081 int older = 0;
6082 int newer = 0;
6083 ztest_shared_t *zs;
6084 ztest_info_t *zi;
6085 ztest_shared_callstate_t *zc;
6086 char timebuf[100];
6087 char numbuf[6];
6088 spa_t *spa;
6089 char *cmd;
6090 boolean_t hasalt;
6091 char *fd_data_str = getenv("ZTEST_FD_DATA");
6092
6093 (void) setvbuf(stdout, NULL, _IOLBF, 0);
6094
6095 dprintf_setup(&argc, argv);
6096 zfs_deadman_synctime_ms = 300000;
6097
6098 ztest_fd_rand = open("/dev/urandom", O_RDONLY);
6099 ASSERT3S(ztest_fd_rand, >=, 0);
6100
6101 if (!fd_data_str) {
6102 process_options(argc, argv);
6103
6104 setup_data_fd();
6105 setup_hdr();
6106 setup_data();
6107 bcopy(&ztest_opts, ztest_shared_opts,
6108 sizeof (*ztest_shared_opts));
6109 } else {
6110 ztest_fd_data = atoi(fd_data_str);
6111 setup_data();
6112 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts));
6113 }
6114 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
6115
6116 /* Override location of zpool.cache */
6117 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache",
6118 ztest_opts.zo_dir), !=, -1);
6119
6120 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
6121 UMEM_NOFAIL);
6122 zs = ztest_shared;
6123
6124 if (fd_data_str) {
6125 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang;
6126 metaslab_df_alloc_threshold =
6127 zs->zs_metaslab_df_alloc_threshold;
6128
6129 if (zs->zs_do_init)
6130 ztest_run_init();
6131 else
6132 ztest_run(zs);
6133 exit(0);
6134 }
6135
6136 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
6137
6138 if (ztest_opts.zo_verbose >= 1) {
6139 (void) printf("%llu vdevs, %d datasets, %d threads,"
6140 " %llu seconds...\n",
6141 (u_longlong_t)ztest_opts.zo_vdevs,
6142 ztest_opts.zo_datasets,
6143 ztest_opts.zo_threads,
6144 (u_longlong_t)ztest_opts.zo_time);
6145 }
6146
6147 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
6148 (void) strlcpy(cmd, getexecname(), MAXNAMELEN);
6149
6150 zs->zs_do_init = B_TRUE;
6151 if (strlen(ztest_opts.zo_alt_ztest) != 0) {
6152 if (ztest_opts.zo_verbose >= 1) {
6153 (void) printf("Executing older ztest for "
6154 "initialization: %s\n", ztest_opts.zo_alt_ztest);
6155 }
6156 VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
6157 ztest_opts.zo_alt_libpath, B_FALSE, NULL));
6158 } else {
6159 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
6160 }
6161 zs->zs_do_init = B_FALSE;
6162
6163 zs->zs_proc_start = gethrtime();
6164 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
6165
6166 for (int f = 0; f < ZTEST_FUNCS; f++) {
6167 zi = &ztest_info[f];
6168 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6169 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
6170 zc->zc_next = UINT64_MAX;
6171 else
6172 zc->zc_next = zs->zs_proc_start +
6173 ztest_random(2 * zi->zi_interval[0] + 1);
6174 }
6175
6176 /*
6177 * Run the tests in a loop. These tests include fault injection
6178 * to verify that self-healing data works, and forced crashes
6179 * to verify that we never lose on-disk consistency.
6180 */
6181 while (gethrtime() < zs->zs_proc_stop) {
6182 int status;
6183 boolean_t killed;
6184
6185 /*
6186 * Initialize the workload counters for each function.
6187 */
6188 for (int f = 0; f < ZTEST_FUNCS; f++) {
6189 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6190 zc->zc_count = 0;
6191 zc->zc_time = 0;
6192 }
6193
6194 /* Set the allocation switch size */
6195 zs->zs_metaslab_df_alloc_threshold =
6196 ztest_random(zs->zs_metaslab_sz / 4) + 1;
6197
6198 if (!hasalt || ztest_random(2) == 0) {
6199 if (hasalt && ztest_opts.zo_verbose >= 1) {
6200 (void) printf("Executing newer ztest: %s\n",
6201 cmd);
6202 }
6203 newer++;
6204 killed = exec_child(cmd, NULL, B_TRUE, &status);
6205 } else {
6206 if (hasalt && ztest_opts.zo_verbose >= 1) {
6207 (void) printf("Executing older ztest: %s\n",
6208 ztest_opts.zo_alt_ztest);
6209 }
6210 older++;
6211 killed = exec_child(ztest_opts.zo_alt_ztest,
6212 ztest_opts.zo_alt_libpath, B_TRUE, &status);
6213 }
6214
6215 if (killed)
6216 kills++;
6217 iters++;
6218
6219 if (ztest_opts.zo_verbose >= 1) {
6220 hrtime_t now = gethrtime();
6221
6222 now = MIN(now, zs->zs_proc_stop);
6223 print_time(zs->zs_proc_stop - now, timebuf);
6224 nicenum(zs->zs_space, numbuf);
6225
6226 (void) printf("Pass %3d, %8s, %3llu ENOSPC, "
6227 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
6228 iters,
6229 WIFEXITED(status) ? "Complete" : "SIGKILL",
6230 (u_longlong_t)zs->zs_enospc_count,
6231 100.0 * zs->zs_alloc / zs->zs_space,
6232 numbuf,
6233 100.0 * (now - zs->zs_proc_start) /
6234 (ztest_opts.zo_time * NANOSEC), timebuf);
6235 }
6236
6237 if (ztest_opts.zo_verbose >= 2) {
6238 (void) printf("\nWorkload summary:\n\n");
6239 (void) printf("%7s %9s %s\n",
6240 "Calls", "Time", "Function");
6241 (void) printf("%7s %9s %s\n",
6242 "-----", "----", "--------");
6243 for (int f = 0; f < ZTEST_FUNCS; f++) {
6244 Dl_info dli;
6245
6246 zi = &ztest_info[f];
6247 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6248 print_time(zc->zc_time, timebuf);
6249 (void) dladdr((void *)zi->zi_func, &dli);
6250 (void) printf("%7llu %9s %s\n",
6251 (u_longlong_t)zc->zc_count, timebuf,
6252 dli.dli_sname);
6253 }
6254 (void) printf("\n");
6255 }
6256
6257 /*
6258 * It's possible that we killed a child during a rename test,
6259 * in which case we'll have a 'ztest_tmp' pool lying around
6260 * instead of 'ztest'. Do a blind rename in case this happened.
6261 */
6262 kernel_init(FREAD);
6263 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) {
6264 spa_close(spa, FTAG);
6265 } else {
6266 char tmpname[MAXNAMELEN];
6267 kernel_fini();
6268 kernel_init(FREAD | FWRITE);
6269 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp",
6270 ztest_opts.zo_pool);
6271 (void) spa_rename(tmpname, ztest_opts.zo_pool);
6272 }
6273 kernel_fini();
6274
6275 ztest_run_zdb(ztest_opts.zo_pool);
6276 }
6277
6278 if (ztest_opts.zo_verbose >= 1) {
6279 if (hasalt) {
6280 (void) printf("%d runs of older ztest: %s\n", older,
6281 ztest_opts.zo_alt_ztest);
6282 (void) printf("%d runs of newer ztest: %s\n", newer,
6283 cmd);
6284 }
6285 (void) printf("%d killed, %d completed, %.0f%% kill rate\n",
6286 kills, iters - kills, (100.0 * kills) / MAX(1, iters));
6287 }
6288
6289 umem_free(cmd, MAXNAMELEN);
6290
6291 return (0);
6292 }
Unleashed OS