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3955 ztest failure: assertion refcount_count(&tx->tx_space_written) + delta <= tx->tx_space_towrite
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
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--- old/usr/src/cmd/ztest/ztest.c
+++ new/usr/src/cmd/ztest/ztest.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright (c) 2012 by Delphix. All rights reserved.
24 24 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25 25 * Copyright (c) 2013 Steven Hartland. All rights reserved.
26 26 */
27 27
28 28 /*
29 29 * The objective of this program is to provide a DMU/ZAP/SPA stress test
30 30 * that runs entirely in userland, is easy to use, and easy to extend.
31 31 *
32 32 * The overall design of the ztest program is as follows:
33 33 *
34 34 * (1) For each major functional area (e.g. adding vdevs to a pool,
35 35 * creating and destroying datasets, reading and writing objects, etc)
36 36 * we have a simple routine to test that functionality. These
37 37 * individual routines do not have to do anything "stressful".
38 38 *
39 39 * (2) We turn these simple functionality tests into a stress test by
40 40 * running them all in parallel, with as many threads as desired,
41 41 * and spread across as many datasets, objects, and vdevs as desired.
42 42 *
43 43 * (3) While all this is happening, we inject faults into the pool to
44 44 * verify that self-healing data really works.
45 45 *
46 46 * (4) Every time we open a dataset, we change its checksum and compression
47 47 * functions. Thus even individual objects vary from block to block
48 48 * in which checksum they use and whether they're compressed.
49 49 *
50 50 * (5) To verify that we never lose on-disk consistency after a crash,
51 51 * we run the entire test in a child of the main process.
52 52 * At random times, the child self-immolates with a SIGKILL.
53 53 * This is the software equivalent of pulling the power cord.
54 54 * The parent then runs the test again, using the existing
55 55 * storage pool, as many times as desired. If backwards compatability
56 56 * testing is enabled ztest will sometimes run the "older" version
57 57 * of ztest after a SIGKILL.
58 58 *
59 59 * (6) To verify that we don't have future leaks or temporal incursions,
60 60 * many of the functional tests record the transaction group number
61 61 * as part of their data. When reading old data, they verify that
62 62 * the transaction group number is less than the current, open txg.
63 63 * If you add a new test, please do this if applicable.
64 64 *
65 65 * When run with no arguments, ztest runs for about five minutes and
66 66 * produces no output if successful. To get a little bit of information,
67 67 * specify -V. To get more information, specify -VV, and so on.
68 68 *
69 69 * To turn this into an overnight stress test, use -T to specify run time.
70 70 *
71 71 * You can ask more more vdevs [-v], datasets [-d], or threads [-t]
72 72 * to increase the pool capacity, fanout, and overall stress level.
73 73 *
74 74 * Use the -k option to set the desired frequency of kills.
75 75 *
76 76 * When ztest invokes itself it passes all relevant information through a
77 77 * temporary file which is mmap-ed in the child process. This allows shared
78 78 * memory to survive the exec syscall. The ztest_shared_hdr_t struct is always
79 79 * stored at offset 0 of this file and contains information on the size and
80 80 * number of shared structures in the file. The information stored in this file
81 81 * must remain backwards compatible with older versions of ztest so that
82 82 * ztest can invoke them during backwards compatibility testing (-B).
83 83 */
84 84
85 85 #include <sys/zfs_context.h>
86 86 #include <sys/spa.h>
87 87 #include <sys/dmu.h>
88 88 #include <sys/txg.h>
89 89 #include <sys/dbuf.h>
90 90 #include <sys/zap.h>
91 91 #include <sys/dmu_objset.h>
92 92 #include <sys/poll.h>
93 93 #include <sys/stat.h>
94 94 #include <sys/time.h>
95 95 #include <sys/wait.h>
96 96 #include <sys/mman.h>
97 97 #include <sys/resource.h>
98 98 #include <sys/zio.h>
99 99 #include <sys/zil.h>
100 100 #include <sys/zil_impl.h>
101 101 #include <sys/vdev_impl.h>
102 102 #include <sys/vdev_file.h>
103 103 #include <sys/spa_impl.h>
104 104 #include <sys/metaslab_impl.h>
105 105 #include <sys/dsl_prop.h>
106 106 #include <sys/dsl_dataset.h>
107 107 #include <sys/dsl_destroy.h>
108 108 #include <sys/dsl_scan.h>
109 109 #include <sys/zio_checksum.h>
110 110 #include <sys/refcount.h>
111 111 #include <sys/zfeature.h>
112 112 #include <sys/dsl_userhold.h>
113 113 #include <stdio.h>
114 114 #include <stdio_ext.h>
115 115 #include <stdlib.h>
116 116 #include <unistd.h>
117 117 #include <signal.h>
118 118 #include <umem.h>
119 119 #include <dlfcn.h>
120 120 #include <ctype.h>
121 121 #include <math.h>
122 122 #include <sys/fs/zfs.h>
123 123 #include <libnvpair.h>
124 124
125 125 static int ztest_fd_data = -1;
126 126 static int ztest_fd_rand = -1;
127 127
128 128 typedef struct ztest_shared_hdr {
129 129 uint64_t zh_hdr_size;
130 130 uint64_t zh_opts_size;
131 131 uint64_t zh_size;
132 132 uint64_t zh_stats_size;
133 133 uint64_t zh_stats_count;
134 134 uint64_t zh_ds_size;
135 135 uint64_t zh_ds_count;
136 136 } ztest_shared_hdr_t;
137 137
138 138 static ztest_shared_hdr_t *ztest_shared_hdr;
139 139
140 140 typedef struct ztest_shared_opts {
141 141 char zo_pool[MAXNAMELEN];
142 142 char zo_dir[MAXNAMELEN];
143 143 char zo_alt_ztest[MAXNAMELEN];
144 144 char zo_alt_libpath[MAXNAMELEN];
145 145 uint64_t zo_vdevs;
146 146 uint64_t zo_vdevtime;
147 147 size_t zo_vdev_size;
148 148 int zo_ashift;
149 149 int zo_mirrors;
150 150 int zo_raidz;
151 151 int zo_raidz_parity;
152 152 int zo_datasets;
153 153 int zo_threads;
154 154 uint64_t zo_passtime;
155 155 uint64_t zo_killrate;
156 156 int zo_verbose;
157 157 int zo_init;
158 158 uint64_t zo_time;
159 159 uint64_t zo_maxloops;
160 160 uint64_t zo_metaslab_gang_bang;
161 161 } ztest_shared_opts_t;
162 162
163 163 static const ztest_shared_opts_t ztest_opts_defaults = {
164 164 .zo_pool = { 'z', 't', 'e', 's', 't', '\0' },
165 165 .zo_dir = { '/', 't', 'm', 'p', '\0' },
166 166 .zo_alt_ztest = { '\0' },
167 167 .zo_alt_libpath = { '\0' },
168 168 .zo_vdevs = 5,
169 169 .zo_ashift = SPA_MINBLOCKSHIFT,
170 170 .zo_mirrors = 2,
171 171 .zo_raidz = 4,
172 172 .zo_raidz_parity = 1,
173 173 .zo_vdev_size = SPA_MINDEVSIZE,
174 174 .zo_datasets = 7,
175 175 .zo_threads = 23,
176 176 .zo_passtime = 60, /* 60 seconds */
177 177 .zo_killrate = 70, /* 70% kill rate */
178 178 .zo_verbose = 0,
179 179 .zo_init = 1,
180 180 .zo_time = 300, /* 5 minutes */
181 181 .zo_maxloops = 50, /* max loops during spa_freeze() */
182 182 .zo_metaslab_gang_bang = 32 << 10
183 183 };
184 184
185 185 extern uint64_t metaslab_gang_bang;
186 186 extern uint64_t metaslab_df_alloc_threshold;
187 187 extern uint64_t zfs_deadman_synctime;
188 188
189 189 static ztest_shared_opts_t *ztest_shared_opts;
190 190 static ztest_shared_opts_t ztest_opts;
191 191
192 192 typedef struct ztest_shared_ds {
193 193 uint64_t zd_seq;
194 194 } ztest_shared_ds_t;
195 195
196 196 static ztest_shared_ds_t *ztest_shared_ds;
197 197 #define ZTEST_GET_SHARED_DS(d) (&ztest_shared_ds[d])
198 198
199 199 #define BT_MAGIC 0x123456789abcdefULL
200 200 #define MAXFAULTS() \
201 201 (MAX(zs->zs_mirrors, 1) * (ztest_opts.zo_raidz_parity + 1) - 1)
202 202
203 203 enum ztest_io_type {
204 204 ZTEST_IO_WRITE_TAG,
205 205 ZTEST_IO_WRITE_PATTERN,
206 206 ZTEST_IO_WRITE_ZEROES,
207 207 ZTEST_IO_TRUNCATE,
208 208 ZTEST_IO_SETATTR,
209 209 ZTEST_IO_REWRITE,
210 210 ZTEST_IO_TYPES
211 211 };
212 212
213 213 typedef struct ztest_block_tag {
214 214 uint64_t bt_magic;
215 215 uint64_t bt_objset;
216 216 uint64_t bt_object;
217 217 uint64_t bt_offset;
218 218 uint64_t bt_gen;
219 219 uint64_t bt_txg;
220 220 uint64_t bt_crtxg;
221 221 } ztest_block_tag_t;
222 222
223 223 typedef struct bufwad {
224 224 uint64_t bw_index;
225 225 uint64_t bw_txg;
226 226 uint64_t bw_data;
227 227 } bufwad_t;
228 228
229 229 /*
230 230 * XXX -- fix zfs range locks to be generic so we can use them here.
231 231 */
232 232 typedef enum {
233 233 RL_READER,
234 234 RL_WRITER,
235 235 RL_APPEND
236 236 } rl_type_t;
237 237
238 238 typedef struct rll {
239 239 void *rll_writer;
240 240 int rll_readers;
241 241 mutex_t rll_lock;
242 242 cond_t rll_cv;
243 243 } rll_t;
244 244
245 245 typedef struct rl {
246 246 uint64_t rl_object;
247 247 uint64_t rl_offset;
248 248 uint64_t rl_size;
249 249 rll_t *rl_lock;
250 250 } rl_t;
251 251
252 252 #define ZTEST_RANGE_LOCKS 64
253 253 #define ZTEST_OBJECT_LOCKS 64
254 254
255 255 /*
256 256 * Object descriptor. Used as a template for object lookup/create/remove.
257 257 */
258 258 typedef struct ztest_od {
259 259 uint64_t od_dir;
260 260 uint64_t od_object;
261 261 dmu_object_type_t od_type;
262 262 dmu_object_type_t od_crtype;
263 263 uint64_t od_blocksize;
264 264 uint64_t od_crblocksize;
265 265 uint64_t od_gen;
266 266 uint64_t od_crgen;
267 267 char od_name[MAXNAMELEN];
268 268 } ztest_od_t;
269 269
270 270 /*
271 271 * Per-dataset state.
272 272 */
273 273 typedef struct ztest_ds {
274 274 ztest_shared_ds_t *zd_shared;
275 275 objset_t *zd_os;
276 276 rwlock_t zd_zilog_lock;
277 277 zilog_t *zd_zilog;
278 278 ztest_od_t *zd_od; /* debugging aid */
279 279 char zd_name[MAXNAMELEN];
280 280 mutex_t zd_dirobj_lock;
281 281 rll_t zd_object_lock[ZTEST_OBJECT_LOCKS];
282 282 rll_t zd_range_lock[ZTEST_RANGE_LOCKS];
283 283 } ztest_ds_t;
284 284
285 285 /*
286 286 * Per-iteration state.
287 287 */
288 288 typedef void ztest_func_t(ztest_ds_t *zd, uint64_t id);
289 289
290 290 typedef struct ztest_info {
291 291 ztest_func_t *zi_func; /* test function */
292 292 uint64_t zi_iters; /* iterations per execution */
293 293 uint64_t *zi_interval; /* execute every <interval> seconds */
294 294 } ztest_info_t;
295 295
296 296 typedef struct ztest_shared_callstate {
297 297 uint64_t zc_count; /* per-pass count */
298 298 uint64_t zc_time; /* per-pass time */
299 299 uint64_t zc_next; /* next time to call this function */
300 300 } ztest_shared_callstate_t;
301 301
302 302 static ztest_shared_callstate_t *ztest_shared_callstate;
303 303 #define ZTEST_GET_SHARED_CALLSTATE(c) (&ztest_shared_callstate[c])
304 304
305 305 /*
306 306 * Note: these aren't static because we want dladdr() to work.
307 307 */
308 308 ztest_func_t ztest_dmu_read_write;
309 309 ztest_func_t ztest_dmu_write_parallel;
310 310 ztest_func_t ztest_dmu_object_alloc_free;
311 311 ztest_func_t ztest_dmu_commit_callbacks;
312 312 ztest_func_t ztest_zap;
313 313 ztest_func_t ztest_zap_parallel;
314 314 ztest_func_t ztest_zil_commit;
315 315 ztest_func_t ztest_zil_remount;
316 316 ztest_func_t ztest_dmu_read_write_zcopy;
317 317 ztest_func_t ztest_dmu_objset_create_destroy;
318 318 ztest_func_t ztest_dmu_prealloc;
319 319 ztest_func_t ztest_fzap;
320 320 ztest_func_t ztest_dmu_snapshot_create_destroy;
321 321 ztest_func_t ztest_dsl_prop_get_set;
322 322 ztest_func_t ztest_spa_prop_get_set;
323 323 ztest_func_t ztest_spa_create_destroy;
324 324 ztest_func_t ztest_fault_inject;
325 325 ztest_func_t ztest_ddt_repair;
326 326 ztest_func_t ztest_dmu_snapshot_hold;
327 327 ztest_func_t ztest_spa_rename;
328 328 ztest_func_t ztest_scrub;
329 329 ztest_func_t ztest_dsl_dataset_promote_busy;
330 330 ztest_func_t ztest_vdev_attach_detach;
331 331 ztest_func_t ztest_vdev_LUN_growth;
332 332 ztest_func_t ztest_vdev_add_remove;
333 333 ztest_func_t ztest_vdev_aux_add_remove;
334 334 ztest_func_t ztest_split_pool;
335 335 ztest_func_t ztest_reguid;
336 336 ztest_func_t ztest_spa_upgrade;
337 337
338 338 uint64_t zopt_always = 0ULL * NANOSEC; /* all the time */
339 339 uint64_t zopt_incessant = 1ULL * NANOSEC / 10; /* every 1/10 second */
340 340 uint64_t zopt_often = 1ULL * NANOSEC; /* every second */
341 341 uint64_t zopt_sometimes = 10ULL * NANOSEC; /* every 10 seconds */
342 342 uint64_t zopt_rarely = 60ULL * NANOSEC; /* every 60 seconds */
343 343
344 344 ztest_info_t ztest_info[] = {
345 345 { ztest_dmu_read_write, 1, &zopt_always },
346 346 { ztest_dmu_write_parallel, 10, &zopt_always },
347 347 { ztest_dmu_object_alloc_free, 1, &zopt_always },
348 348 { ztest_dmu_commit_callbacks, 1, &zopt_always },
349 349 { ztest_zap, 30, &zopt_always },
350 350 { ztest_zap_parallel, 100, &zopt_always },
351 351 { ztest_split_pool, 1, &zopt_always },
352 352 { ztest_zil_commit, 1, &zopt_incessant },
353 353 { ztest_zil_remount, 1, &zopt_sometimes },
354 354 { ztest_dmu_read_write_zcopy, 1, &zopt_often },
355 355 { ztest_dmu_objset_create_destroy, 1, &zopt_often },
356 356 { ztest_dsl_prop_get_set, 1, &zopt_often },
357 357 { ztest_spa_prop_get_set, 1, &zopt_sometimes },
358 358 #if 0
359 359 { ztest_dmu_prealloc, 1, &zopt_sometimes },
360 360 #endif
361 361 { ztest_fzap, 1, &zopt_sometimes },
362 362 { ztest_dmu_snapshot_create_destroy, 1, &zopt_sometimes },
363 363 { ztest_spa_create_destroy, 1, &zopt_sometimes },
364 364 { ztest_fault_inject, 1, &zopt_sometimes },
365 365 { ztest_ddt_repair, 1, &zopt_sometimes },
366 366 { ztest_dmu_snapshot_hold, 1, &zopt_sometimes },
367 367 { ztest_reguid, 1, &zopt_rarely },
368 368 { ztest_spa_rename, 1, &zopt_rarely },
369 369 { ztest_scrub, 1, &zopt_rarely },
370 370 { ztest_spa_upgrade, 1, &zopt_rarely },
371 371 { ztest_dsl_dataset_promote_busy, 1, &zopt_rarely },
372 372 { ztest_vdev_attach_detach, 1, &zopt_sometimes },
373 373 { ztest_vdev_LUN_growth, 1, &zopt_rarely },
374 374 { ztest_vdev_add_remove, 1,
375 375 &ztest_opts.zo_vdevtime },
376 376 { ztest_vdev_aux_add_remove, 1,
377 377 &ztest_opts.zo_vdevtime },
378 378 };
379 379
380 380 #define ZTEST_FUNCS (sizeof (ztest_info) / sizeof (ztest_info_t))
381 381
382 382 /*
383 383 * The following struct is used to hold a list of uncalled commit callbacks.
384 384 * The callbacks are ordered by txg number.
385 385 */
386 386 typedef struct ztest_cb_list {
387 387 mutex_t zcl_callbacks_lock;
388 388 list_t zcl_callbacks;
389 389 } ztest_cb_list_t;
390 390
391 391 /*
392 392 * Stuff we need to share writably between parent and child.
393 393 */
394 394 typedef struct ztest_shared {
395 395 boolean_t zs_do_init;
396 396 hrtime_t zs_proc_start;
397 397 hrtime_t zs_proc_stop;
398 398 hrtime_t zs_thread_start;
399 399 hrtime_t zs_thread_stop;
400 400 hrtime_t zs_thread_kill;
401 401 uint64_t zs_enospc_count;
402 402 uint64_t zs_vdev_next_leaf;
403 403 uint64_t zs_vdev_aux;
404 404 uint64_t zs_alloc;
405 405 uint64_t zs_space;
406 406 uint64_t zs_splits;
407 407 uint64_t zs_mirrors;
408 408 uint64_t zs_metaslab_sz;
409 409 uint64_t zs_metaslab_df_alloc_threshold;
410 410 uint64_t zs_guid;
411 411 } ztest_shared_t;
412 412
413 413 #define ID_PARALLEL -1ULL
414 414
415 415 static char ztest_dev_template[] = "%s/%s.%llua";
416 416 static char ztest_aux_template[] = "%s/%s.%s.%llu";
417 417 ztest_shared_t *ztest_shared;
418 418
419 419 static spa_t *ztest_spa = NULL;
420 420 static ztest_ds_t *ztest_ds;
421 421
422 422 static mutex_t ztest_vdev_lock;
423 423
424 424 /*
425 425 * The ztest_name_lock protects the pool and dataset namespace used by
426 426 * the individual tests. To modify the namespace, consumers must grab
427 427 * this lock as writer. Grabbing the lock as reader will ensure that the
428 428 * namespace does not change while the lock is held.
429 429 */
430 430 static rwlock_t ztest_name_lock;
431 431
432 432 static boolean_t ztest_dump_core = B_TRUE;
433 433 static boolean_t ztest_exiting;
434 434
435 435 /* Global commit callback list */
436 436 static ztest_cb_list_t zcl;
437 437
438 438 enum ztest_object {
439 439 ZTEST_META_DNODE = 0,
440 440 ZTEST_DIROBJ,
441 441 ZTEST_OBJECTS
442 442 };
443 443
444 444 static void usage(boolean_t) __NORETURN;
445 445
446 446 /*
447 447 * These libumem hooks provide a reasonable set of defaults for the allocator's
448 448 * debugging facilities.
449 449 */
450 450 const char *
451 451 _umem_debug_init()
452 452 {
453 453 return ("default,verbose"); /* $UMEM_DEBUG setting */
454 454 }
455 455
456 456 const char *
457 457 _umem_logging_init(void)
458 458 {
459 459 return ("fail,contents"); /* $UMEM_LOGGING setting */
460 460 }
461 461
462 462 #define FATAL_MSG_SZ 1024
463 463
464 464 char *fatal_msg;
465 465
466 466 static void
467 467 fatal(int do_perror, char *message, ...)
468 468 {
469 469 va_list args;
470 470 int save_errno = errno;
471 471 char buf[FATAL_MSG_SZ];
472 472
473 473 (void) fflush(stdout);
474 474
475 475 va_start(args, message);
476 476 (void) sprintf(buf, "ztest: ");
477 477 /* LINTED */
478 478 (void) vsprintf(buf + strlen(buf), message, args);
479 479 va_end(args);
480 480 if (do_perror) {
481 481 (void) snprintf(buf + strlen(buf), FATAL_MSG_SZ - strlen(buf),
482 482 ": %s", strerror(save_errno));
483 483 }
484 484 (void) fprintf(stderr, "%s\n", buf);
485 485 fatal_msg = buf; /* to ease debugging */
486 486 if (ztest_dump_core)
487 487 abort();
488 488 exit(3);
489 489 }
490 490
491 491 static int
492 492 str2shift(const char *buf)
493 493 {
494 494 const char *ends = "BKMGTPEZ";
495 495 int i;
496 496
497 497 if (buf[0] == '\0')
498 498 return (0);
499 499 for (i = 0; i < strlen(ends); i++) {
500 500 if (toupper(buf[0]) == ends[i])
501 501 break;
502 502 }
503 503 if (i == strlen(ends)) {
504 504 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n",
505 505 buf);
506 506 usage(B_FALSE);
507 507 }
508 508 if (buf[1] == '\0' || (toupper(buf[1]) == 'B' && buf[2] == '\0')) {
509 509 return (10*i);
510 510 }
511 511 (void) fprintf(stderr, "ztest: invalid bytes suffix: %s\n", buf);
512 512 usage(B_FALSE);
513 513 /* NOTREACHED */
514 514 }
515 515
516 516 static uint64_t
517 517 nicenumtoull(const char *buf)
518 518 {
519 519 char *end;
520 520 uint64_t val;
521 521
522 522 val = strtoull(buf, &end, 0);
523 523 if (end == buf) {
524 524 (void) fprintf(stderr, "ztest: bad numeric value: %s\n", buf);
525 525 usage(B_FALSE);
526 526 } else if (end[0] == '.') {
527 527 double fval = strtod(buf, &end);
528 528 fval *= pow(2, str2shift(end));
529 529 if (fval > UINT64_MAX) {
530 530 (void) fprintf(stderr, "ztest: value too large: %s\n",
531 531 buf);
532 532 usage(B_FALSE);
533 533 }
534 534 val = (uint64_t)fval;
535 535 } else {
536 536 int shift = str2shift(end);
537 537 if (shift >= 64 || (val << shift) >> shift != val) {
538 538 (void) fprintf(stderr, "ztest: value too large: %s\n",
539 539 buf);
540 540 usage(B_FALSE);
541 541 }
542 542 val <<= shift;
543 543 }
544 544 return (val);
545 545 }
546 546
547 547 static void
548 548 usage(boolean_t requested)
549 549 {
550 550 const ztest_shared_opts_t *zo = &ztest_opts_defaults;
551 551
552 552 char nice_vdev_size[10];
553 553 char nice_gang_bang[10];
554 554 FILE *fp = requested ? stdout : stderr;
555 555
556 556 nicenum(zo->zo_vdev_size, nice_vdev_size);
557 557 nicenum(zo->zo_metaslab_gang_bang, nice_gang_bang);
558 558
559 559 (void) fprintf(fp, "Usage: %s\n"
560 560 "\t[-v vdevs (default: %llu)]\n"
561 561 "\t[-s size_of_each_vdev (default: %s)]\n"
562 562 "\t[-a alignment_shift (default: %d)] use 0 for random\n"
563 563 "\t[-m mirror_copies (default: %d)]\n"
564 564 "\t[-r raidz_disks (default: %d)]\n"
565 565 "\t[-R raidz_parity (default: %d)]\n"
566 566 "\t[-d datasets (default: %d)]\n"
567 567 "\t[-t threads (default: %d)]\n"
568 568 "\t[-g gang_block_threshold (default: %s)]\n"
569 569 "\t[-i init_count (default: %d)] initialize pool i times\n"
570 570 "\t[-k kill_percentage (default: %llu%%)]\n"
571 571 "\t[-p pool_name (default: %s)]\n"
572 572 "\t[-f dir (default: %s)] file directory for vdev files\n"
573 573 "\t[-V] verbose (use multiple times for ever more blather)\n"
574 574 "\t[-E] use existing pool instead of creating new one\n"
575 575 "\t[-T time (default: %llu sec)] total run time\n"
576 576 "\t[-F freezeloops (default: %llu)] max loops in spa_freeze()\n"
577 577 "\t[-P passtime (default: %llu sec)] time per pass\n"
578 578 "\t[-B alt_ztest (default: <none>)] alternate ztest path\n"
579 579 "\t[-h] (print help)\n"
580 580 "",
581 581 zo->zo_pool,
582 582 (u_longlong_t)zo->zo_vdevs, /* -v */
583 583 nice_vdev_size, /* -s */
584 584 zo->zo_ashift, /* -a */
585 585 zo->zo_mirrors, /* -m */
586 586 zo->zo_raidz, /* -r */
587 587 zo->zo_raidz_parity, /* -R */
588 588 zo->zo_datasets, /* -d */
589 589 zo->zo_threads, /* -t */
590 590 nice_gang_bang, /* -g */
591 591 zo->zo_init, /* -i */
592 592 (u_longlong_t)zo->zo_killrate, /* -k */
593 593 zo->zo_pool, /* -p */
594 594 zo->zo_dir, /* -f */
595 595 (u_longlong_t)zo->zo_time, /* -T */
596 596 (u_longlong_t)zo->zo_maxloops, /* -F */
597 597 (u_longlong_t)zo->zo_passtime);
598 598 exit(requested ? 0 : 1);
599 599 }
600 600
601 601 static void
602 602 process_options(int argc, char **argv)
603 603 {
604 604 char *path;
605 605 ztest_shared_opts_t *zo = &ztest_opts;
606 606
607 607 int opt;
608 608 uint64_t value;
609 609 char altdir[MAXNAMELEN] = { 0 };
610 610
611 611 bcopy(&ztest_opts_defaults, zo, sizeof (*zo));
612 612
613 613 while ((opt = getopt(argc, argv,
614 614 "v:s:a:m:r:R:d:t:g:i:k:p:f:VET:P:hF:B:")) != EOF) {
615 615 value = 0;
616 616 switch (opt) {
617 617 case 'v':
618 618 case 's':
619 619 case 'a':
620 620 case 'm':
621 621 case 'r':
622 622 case 'R':
623 623 case 'd':
624 624 case 't':
625 625 case 'g':
626 626 case 'i':
627 627 case 'k':
628 628 case 'T':
629 629 case 'P':
630 630 case 'F':
631 631 value = nicenumtoull(optarg);
632 632 }
633 633 switch (opt) {
634 634 case 'v':
635 635 zo->zo_vdevs = value;
636 636 break;
637 637 case 's':
638 638 zo->zo_vdev_size = MAX(SPA_MINDEVSIZE, value);
639 639 break;
640 640 case 'a':
641 641 zo->zo_ashift = value;
642 642 break;
643 643 case 'm':
644 644 zo->zo_mirrors = value;
645 645 break;
646 646 case 'r':
647 647 zo->zo_raidz = MAX(1, value);
648 648 break;
649 649 case 'R':
650 650 zo->zo_raidz_parity = MIN(MAX(value, 1), 3);
651 651 break;
652 652 case 'd':
653 653 zo->zo_datasets = MAX(1, value);
654 654 break;
655 655 case 't':
656 656 zo->zo_threads = MAX(1, value);
657 657 break;
658 658 case 'g':
659 659 zo->zo_metaslab_gang_bang = MAX(SPA_MINBLOCKSIZE << 1,
660 660 value);
661 661 break;
662 662 case 'i':
663 663 zo->zo_init = value;
664 664 break;
665 665 case 'k':
666 666 zo->zo_killrate = value;
667 667 break;
668 668 case 'p':
669 669 (void) strlcpy(zo->zo_pool, optarg,
670 670 sizeof (zo->zo_pool));
671 671 break;
672 672 case 'f':
673 673 path = realpath(optarg, NULL);
674 674 if (path == NULL) {
675 675 (void) fprintf(stderr, "error: %s: %s\n",
676 676 optarg, strerror(errno));
677 677 usage(B_FALSE);
678 678 } else {
679 679 (void) strlcpy(zo->zo_dir, path,
680 680 sizeof (zo->zo_dir));
681 681 }
682 682 break;
683 683 case 'V':
684 684 zo->zo_verbose++;
685 685 break;
686 686 case 'E':
687 687 zo->zo_init = 0;
688 688 break;
689 689 case 'T':
690 690 zo->zo_time = value;
691 691 break;
692 692 case 'P':
693 693 zo->zo_passtime = MAX(1, value);
694 694 break;
695 695 case 'F':
696 696 zo->zo_maxloops = MAX(1, value);
697 697 break;
698 698 case 'B':
699 699 (void) strlcpy(altdir, optarg, sizeof (altdir));
700 700 break;
701 701 case 'h':
702 702 usage(B_TRUE);
703 703 break;
704 704 case '?':
705 705 default:
706 706 usage(B_FALSE);
707 707 break;
708 708 }
709 709 }
710 710
711 711 zo->zo_raidz_parity = MIN(zo->zo_raidz_parity, zo->zo_raidz - 1);
712 712
713 713 zo->zo_vdevtime =
714 714 (zo->zo_vdevs > 0 ? zo->zo_time * NANOSEC / zo->zo_vdevs :
715 715 UINT64_MAX >> 2);
716 716
717 717 if (strlen(altdir) > 0) {
718 718 char *cmd;
719 719 char *realaltdir;
720 720 char *bin;
721 721 char *ztest;
722 722 char *isa;
723 723 int isalen;
724 724
725 725 cmd = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
726 726 realaltdir = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
727 727
728 728 VERIFY(NULL != realpath(getexecname(), cmd));
729 729 if (0 != access(altdir, F_OK)) {
730 730 ztest_dump_core = B_FALSE;
731 731 fatal(B_TRUE, "invalid alternate ztest path: %s",
732 732 altdir);
733 733 }
734 734 VERIFY(NULL != realpath(altdir, realaltdir));
735 735
736 736 /*
737 737 * 'cmd' should be of the form "<anything>/usr/bin/<isa>/ztest".
738 738 * We want to extract <isa> to determine if we should use
739 739 * 32 or 64 bit binaries.
740 740 */
741 741 bin = strstr(cmd, "/usr/bin/");
742 742 ztest = strstr(bin, "/ztest");
743 743 isa = bin + 9;
744 744 isalen = ztest - isa;
745 745 (void) snprintf(zo->zo_alt_ztest, sizeof (zo->zo_alt_ztest),
746 746 "%s/usr/bin/%.*s/ztest", realaltdir, isalen, isa);
747 747 (void) snprintf(zo->zo_alt_libpath, sizeof (zo->zo_alt_libpath),
748 748 "%s/usr/lib/%.*s", realaltdir, isalen, isa);
749 749
750 750 if (0 != access(zo->zo_alt_ztest, X_OK)) {
751 751 ztest_dump_core = B_FALSE;
752 752 fatal(B_TRUE, "invalid alternate ztest: %s",
753 753 zo->zo_alt_ztest);
754 754 } else if (0 != access(zo->zo_alt_libpath, X_OK)) {
755 755 ztest_dump_core = B_FALSE;
756 756 fatal(B_TRUE, "invalid alternate lib directory %s",
757 757 zo->zo_alt_libpath);
758 758 }
759 759
760 760 umem_free(cmd, MAXPATHLEN);
761 761 umem_free(realaltdir, MAXPATHLEN);
762 762 }
763 763 }
764 764
765 765 static void
766 766 ztest_kill(ztest_shared_t *zs)
767 767 {
768 768 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(ztest_spa));
769 769 zs->zs_space = metaslab_class_get_space(spa_normal_class(ztest_spa));
770 770 (void) kill(getpid(), SIGKILL);
771 771 }
772 772
773 773 static uint64_t
774 774 ztest_random(uint64_t range)
775 775 {
776 776 uint64_t r;
777 777
778 778 ASSERT3S(ztest_fd_rand, >=, 0);
779 779
780 780 if (range == 0)
781 781 return (0);
782 782
783 783 if (read(ztest_fd_rand, &r, sizeof (r)) != sizeof (r))
784 784 fatal(1, "short read from /dev/urandom");
785 785
786 786 return (r % range);
787 787 }
788 788
789 789 /* ARGSUSED */
790 790 static void
791 791 ztest_record_enospc(const char *s)
792 792 {
793 793 ztest_shared->zs_enospc_count++;
794 794 }
795 795
796 796 static uint64_t
797 797 ztest_get_ashift(void)
798 798 {
799 799 if (ztest_opts.zo_ashift == 0)
800 800 return (SPA_MINBLOCKSHIFT + ztest_random(3));
801 801 return (ztest_opts.zo_ashift);
802 802 }
803 803
804 804 static nvlist_t *
805 805 make_vdev_file(char *path, char *aux, char *pool, size_t size, uint64_t ashift)
806 806 {
807 807 char pathbuf[MAXPATHLEN];
808 808 uint64_t vdev;
809 809 nvlist_t *file;
810 810
811 811 if (ashift == 0)
812 812 ashift = ztest_get_ashift();
813 813
814 814 if (path == NULL) {
815 815 path = pathbuf;
816 816
817 817 if (aux != NULL) {
818 818 vdev = ztest_shared->zs_vdev_aux;
819 819 (void) snprintf(path, sizeof (pathbuf),
820 820 ztest_aux_template, ztest_opts.zo_dir,
821 821 pool == NULL ? ztest_opts.zo_pool : pool,
822 822 aux, vdev);
823 823 } else {
824 824 vdev = ztest_shared->zs_vdev_next_leaf++;
825 825 (void) snprintf(path, sizeof (pathbuf),
826 826 ztest_dev_template, ztest_opts.zo_dir,
827 827 pool == NULL ? ztest_opts.zo_pool : pool, vdev);
828 828 }
829 829 }
830 830
831 831 if (size != 0) {
832 832 int fd = open(path, O_RDWR | O_CREAT | O_TRUNC, 0666);
833 833 if (fd == -1)
834 834 fatal(1, "can't open %s", path);
835 835 if (ftruncate(fd, size) != 0)
836 836 fatal(1, "can't ftruncate %s", path);
837 837 (void) close(fd);
838 838 }
839 839
840 840 VERIFY(nvlist_alloc(&file, NV_UNIQUE_NAME, 0) == 0);
841 841 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_TYPE, VDEV_TYPE_FILE) == 0);
842 842 VERIFY(nvlist_add_string(file, ZPOOL_CONFIG_PATH, path) == 0);
843 843 VERIFY(nvlist_add_uint64(file, ZPOOL_CONFIG_ASHIFT, ashift) == 0);
844 844
845 845 return (file);
846 846 }
847 847
848 848 static nvlist_t *
849 849 make_vdev_raidz(char *path, char *aux, char *pool, size_t size,
850 850 uint64_t ashift, int r)
851 851 {
852 852 nvlist_t *raidz, **child;
853 853 int c;
854 854
855 855 if (r < 2)
856 856 return (make_vdev_file(path, aux, pool, size, ashift));
857 857 child = umem_alloc(r * sizeof (nvlist_t *), UMEM_NOFAIL);
858 858
859 859 for (c = 0; c < r; c++)
860 860 child[c] = make_vdev_file(path, aux, pool, size, ashift);
861 861
862 862 VERIFY(nvlist_alloc(&raidz, NV_UNIQUE_NAME, 0) == 0);
863 863 VERIFY(nvlist_add_string(raidz, ZPOOL_CONFIG_TYPE,
864 864 VDEV_TYPE_RAIDZ) == 0);
865 865 VERIFY(nvlist_add_uint64(raidz, ZPOOL_CONFIG_NPARITY,
866 866 ztest_opts.zo_raidz_parity) == 0);
867 867 VERIFY(nvlist_add_nvlist_array(raidz, ZPOOL_CONFIG_CHILDREN,
868 868 child, r) == 0);
869 869
870 870 for (c = 0; c < r; c++)
871 871 nvlist_free(child[c]);
872 872
873 873 umem_free(child, r * sizeof (nvlist_t *));
874 874
875 875 return (raidz);
876 876 }
877 877
878 878 static nvlist_t *
879 879 make_vdev_mirror(char *path, char *aux, char *pool, size_t size,
880 880 uint64_t ashift, int r, int m)
881 881 {
882 882 nvlist_t *mirror, **child;
883 883 int c;
884 884
885 885 if (m < 1)
886 886 return (make_vdev_raidz(path, aux, pool, size, ashift, r));
887 887
888 888 child = umem_alloc(m * sizeof (nvlist_t *), UMEM_NOFAIL);
889 889
890 890 for (c = 0; c < m; c++)
891 891 child[c] = make_vdev_raidz(path, aux, pool, size, ashift, r);
892 892
893 893 VERIFY(nvlist_alloc(&mirror, NV_UNIQUE_NAME, 0) == 0);
894 894 VERIFY(nvlist_add_string(mirror, ZPOOL_CONFIG_TYPE,
895 895 VDEV_TYPE_MIRROR) == 0);
896 896 VERIFY(nvlist_add_nvlist_array(mirror, ZPOOL_CONFIG_CHILDREN,
897 897 child, m) == 0);
898 898
899 899 for (c = 0; c < m; c++)
900 900 nvlist_free(child[c]);
901 901
902 902 umem_free(child, m * sizeof (nvlist_t *));
903 903
904 904 return (mirror);
905 905 }
906 906
907 907 static nvlist_t *
908 908 make_vdev_root(char *path, char *aux, char *pool, size_t size, uint64_t ashift,
909 909 int log, int r, int m, int t)
910 910 {
911 911 nvlist_t *root, **child;
912 912 int c;
913 913
914 914 ASSERT(t > 0);
915 915
916 916 child = umem_alloc(t * sizeof (nvlist_t *), UMEM_NOFAIL);
917 917
918 918 for (c = 0; c < t; c++) {
919 919 child[c] = make_vdev_mirror(path, aux, pool, size, ashift,
920 920 r, m);
921 921 VERIFY(nvlist_add_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
922 922 log) == 0);
923 923 }
924 924
925 925 VERIFY(nvlist_alloc(&root, NV_UNIQUE_NAME, 0) == 0);
926 926 VERIFY(nvlist_add_string(root, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) == 0);
927 927 VERIFY(nvlist_add_nvlist_array(root, aux ? aux : ZPOOL_CONFIG_CHILDREN,
928 928 child, t) == 0);
929 929
930 930 for (c = 0; c < t; c++)
931 931 nvlist_free(child[c]);
932 932
933 933 umem_free(child, t * sizeof (nvlist_t *));
934 934
935 935 return (root);
936 936 }
937 937
938 938 /*
939 939 * Find a random spa version. Returns back a random spa version in the
940 940 * range [initial_version, SPA_VERSION_FEATURES].
941 941 */
942 942 static uint64_t
943 943 ztest_random_spa_version(uint64_t initial_version)
944 944 {
945 945 uint64_t version = initial_version;
946 946
947 947 if (version <= SPA_VERSION_BEFORE_FEATURES) {
948 948 version = version +
949 949 ztest_random(SPA_VERSION_BEFORE_FEATURES - version + 1);
950 950 }
951 951
952 952 if (version > SPA_VERSION_BEFORE_FEATURES)
953 953 version = SPA_VERSION_FEATURES;
954 954
955 955 ASSERT(SPA_VERSION_IS_SUPPORTED(version));
956 956 return (version);
957 957 }
958 958
959 959 static int
960 960 ztest_random_blocksize(void)
961 961 {
962 962 return (1 << (SPA_MINBLOCKSHIFT +
963 963 ztest_random(SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT + 1)));
964 964 }
965 965
966 966 static int
967 967 ztest_random_ibshift(void)
968 968 {
969 969 return (DN_MIN_INDBLKSHIFT +
970 970 ztest_random(DN_MAX_INDBLKSHIFT - DN_MIN_INDBLKSHIFT + 1));
971 971 }
972 972
973 973 static uint64_t
974 974 ztest_random_vdev_top(spa_t *spa, boolean_t log_ok)
975 975 {
976 976 uint64_t top;
977 977 vdev_t *rvd = spa->spa_root_vdev;
978 978 vdev_t *tvd;
979 979
980 980 ASSERT(spa_config_held(spa, SCL_ALL, RW_READER) != 0);
981 981
982 982 do {
983 983 top = ztest_random(rvd->vdev_children);
984 984 tvd = rvd->vdev_child[top];
985 985 } while (tvd->vdev_ishole || (tvd->vdev_islog && !log_ok) ||
986 986 tvd->vdev_mg == NULL || tvd->vdev_mg->mg_class == NULL);
987 987
988 988 return (top);
989 989 }
990 990
991 991 static uint64_t
992 992 ztest_random_dsl_prop(zfs_prop_t prop)
993 993 {
994 994 uint64_t value;
995 995
996 996 do {
997 997 value = zfs_prop_random_value(prop, ztest_random(-1ULL));
998 998 } while (prop == ZFS_PROP_CHECKSUM && value == ZIO_CHECKSUM_OFF);
999 999
1000 1000 return (value);
1001 1001 }
1002 1002
1003 1003 static int
1004 1004 ztest_dsl_prop_set_uint64(char *osname, zfs_prop_t prop, uint64_t value,
1005 1005 boolean_t inherit)
1006 1006 {
1007 1007 const char *propname = zfs_prop_to_name(prop);
1008 1008 const char *valname;
1009 1009 char setpoint[MAXPATHLEN];
1010 1010 uint64_t curval;
1011 1011 int error;
1012 1012
1013 1013 error = dsl_prop_set_int(osname, propname,
1014 1014 (inherit ? ZPROP_SRC_NONE : ZPROP_SRC_LOCAL), value);
1015 1015
1016 1016 if (error == ENOSPC) {
1017 1017 ztest_record_enospc(FTAG);
1018 1018 return (error);
1019 1019 }
1020 1020 ASSERT0(error);
1021 1021
1022 1022 VERIFY0(dsl_prop_get_integer(osname, propname, &curval, setpoint));
1023 1023
1024 1024 if (ztest_opts.zo_verbose >= 6) {
1025 1025 VERIFY(zfs_prop_index_to_string(prop, curval, &valname) == 0);
1026 1026 (void) printf("%s %s = %s at '%s'\n",
1027 1027 osname, propname, valname, setpoint);
1028 1028 }
1029 1029
1030 1030 return (error);
1031 1031 }
1032 1032
1033 1033 static int
1034 1034 ztest_spa_prop_set_uint64(zpool_prop_t prop, uint64_t value)
1035 1035 {
1036 1036 spa_t *spa = ztest_spa;
1037 1037 nvlist_t *props = NULL;
1038 1038 int error;
1039 1039
1040 1040 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
1041 1041 VERIFY(nvlist_add_uint64(props, zpool_prop_to_name(prop), value) == 0);
1042 1042
1043 1043 error = spa_prop_set(spa, props);
1044 1044
1045 1045 nvlist_free(props);
1046 1046
1047 1047 if (error == ENOSPC) {
1048 1048 ztest_record_enospc(FTAG);
1049 1049 return (error);
1050 1050 }
1051 1051 ASSERT0(error);
1052 1052
1053 1053 return (error);
1054 1054 }
1055 1055
1056 1056 static void
1057 1057 ztest_rll_init(rll_t *rll)
1058 1058 {
1059 1059 rll->rll_writer = NULL;
1060 1060 rll->rll_readers = 0;
1061 1061 VERIFY(_mutex_init(&rll->rll_lock, USYNC_THREAD, NULL) == 0);
1062 1062 VERIFY(cond_init(&rll->rll_cv, USYNC_THREAD, NULL) == 0);
1063 1063 }
1064 1064
1065 1065 static void
1066 1066 ztest_rll_destroy(rll_t *rll)
1067 1067 {
1068 1068 ASSERT(rll->rll_writer == NULL);
1069 1069 ASSERT(rll->rll_readers == 0);
1070 1070 VERIFY(_mutex_destroy(&rll->rll_lock) == 0);
1071 1071 VERIFY(cond_destroy(&rll->rll_cv) == 0);
1072 1072 }
1073 1073
1074 1074 static void
1075 1075 ztest_rll_lock(rll_t *rll, rl_type_t type)
1076 1076 {
1077 1077 VERIFY(mutex_lock(&rll->rll_lock) == 0);
1078 1078
1079 1079 if (type == RL_READER) {
1080 1080 while (rll->rll_writer != NULL)
1081 1081 (void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1082 1082 rll->rll_readers++;
1083 1083 } else {
1084 1084 while (rll->rll_writer != NULL || rll->rll_readers)
1085 1085 (void) cond_wait(&rll->rll_cv, &rll->rll_lock);
1086 1086 rll->rll_writer = curthread;
1087 1087 }
1088 1088
1089 1089 VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1090 1090 }
1091 1091
1092 1092 static void
1093 1093 ztest_rll_unlock(rll_t *rll)
1094 1094 {
1095 1095 VERIFY(mutex_lock(&rll->rll_lock) == 0);
1096 1096
1097 1097 if (rll->rll_writer) {
1098 1098 ASSERT(rll->rll_readers == 0);
1099 1099 rll->rll_writer = NULL;
1100 1100 } else {
1101 1101 ASSERT(rll->rll_readers != 0);
1102 1102 ASSERT(rll->rll_writer == NULL);
1103 1103 rll->rll_readers--;
1104 1104 }
1105 1105
1106 1106 if (rll->rll_writer == NULL && rll->rll_readers == 0)
1107 1107 VERIFY(cond_broadcast(&rll->rll_cv) == 0);
1108 1108
1109 1109 VERIFY(mutex_unlock(&rll->rll_lock) == 0);
1110 1110 }
1111 1111
1112 1112 static void
1113 1113 ztest_object_lock(ztest_ds_t *zd, uint64_t object, rl_type_t type)
1114 1114 {
1115 1115 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1116 1116
1117 1117 ztest_rll_lock(rll, type);
1118 1118 }
1119 1119
1120 1120 static void
1121 1121 ztest_object_unlock(ztest_ds_t *zd, uint64_t object)
1122 1122 {
1123 1123 rll_t *rll = &zd->zd_object_lock[object & (ZTEST_OBJECT_LOCKS - 1)];
1124 1124
1125 1125 ztest_rll_unlock(rll);
1126 1126 }
1127 1127
1128 1128 static rl_t *
1129 1129 ztest_range_lock(ztest_ds_t *zd, uint64_t object, uint64_t offset,
1130 1130 uint64_t size, rl_type_t type)
1131 1131 {
1132 1132 uint64_t hash = object ^ (offset % (ZTEST_RANGE_LOCKS + 1));
1133 1133 rll_t *rll = &zd->zd_range_lock[hash & (ZTEST_RANGE_LOCKS - 1)];
1134 1134 rl_t *rl;
1135 1135
1136 1136 rl = umem_alloc(sizeof (*rl), UMEM_NOFAIL);
1137 1137 rl->rl_object = object;
1138 1138 rl->rl_offset = offset;
1139 1139 rl->rl_size = size;
1140 1140 rl->rl_lock = rll;
1141 1141
1142 1142 ztest_rll_lock(rll, type);
1143 1143
1144 1144 return (rl);
1145 1145 }
1146 1146
1147 1147 static void
1148 1148 ztest_range_unlock(rl_t *rl)
1149 1149 {
1150 1150 rll_t *rll = rl->rl_lock;
1151 1151
1152 1152 ztest_rll_unlock(rll);
1153 1153
1154 1154 umem_free(rl, sizeof (*rl));
1155 1155 }
1156 1156
1157 1157 static void
1158 1158 ztest_zd_init(ztest_ds_t *zd, ztest_shared_ds_t *szd, objset_t *os)
1159 1159 {
1160 1160 zd->zd_os = os;
1161 1161 zd->zd_zilog = dmu_objset_zil(os);
1162 1162 zd->zd_shared = szd;
1163 1163 dmu_objset_name(os, zd->zd_name);
1164 1164
1165 1165 if (zd->zd_shared != NULL)
1166 1166 zd->zd_shared->zd_seq = 0;
1167 1167
1168 1168 VERIFY(rwlock_init(&zd->zd_zilog_lock, USYNC_THREAD, NULL) == 0);
1169 1169 VERIFY(_mutex_init(&zd->zd_dirobj_lock, USYNC_THREAD, NULL) == 0);
1170 1170
1171 1171 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1172 1172 ztest_rll_init(&zd->zd_object_lock[l]);
1173 1173
1174 1174 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1175 1175 ztest_rll_init(&zd->zd_range_lock[l]);
1176 1176 }
1177 1177
1178 1178 static void
1179 1179 ztest_zd_fini(ztest_ds_t *zd)
1180 1180 {
1181 1181 VERIFY(_mutex_destroy(&zd->zd_dirobj_lock) == 0);
1182 1182
1183 1183 for (int l = 0; l < ZTEST_OBJECT_LOCKS; l++)
1184 1184 ztest_rll_destroy(&zd->zd_object_lock[l]);
1185 1185
1186 1186 for (int l = 0; l < ZTEST_RANGE_LOCKS; l++)
1187 1187 ztest_rll_destroy(&zd->zd_range_lock[l]);
1188 1188 }
1189 1189
1190 1190 #define TXG_MIGHTWAIT (ztest_random(10) == 0 ? TXG_NOWAIT : TXG_WAIT)
1191 1191
1192 1192 static uint64_t
1193 1193 ztest_tx_assign(dmu_tx_t *tx, uint64_t txg_how, const char *tag)
1194 1194 {
1195 1195 uint64_t txg;
1196 1196 int error;
1197 1197
1198 1198 /*
1199 1199 * Attempt to assign tx to some transaction group.
1200 1200 */
1201 1201 error = dmu_tx_assign(tx, txg_how);
1202 1202 if (error) {
1203 1203 if (error == ERESTART) {
1204 1204 ASSERT(txg_how == TXG_NOWAIT);
1205 1205 dmu_tx_wait(tx);
1206 1206 } else {
1207 1207 ASSERT3U(error, ==, ENOSPC);
1208 1208 ztest_record_enospc(tag);
1209 1209 }
1210 1210 dmu_tx_abort(tx);
1211 1211 return (0);
1212 1212 }
1213 1213 txg = dmu_tx_get_txg(tx);
1214 1214 ASSERT(txg != 0);
1215 1215 return (txg);
1216 1216 }
1217 1217
1218 1218 static void
1219 1219 ztest_pattern_set(void *buf, uint64_t size, uint64_t value)
1220 1220 {
1221 1221 uint64_t *ip = buf;
1222 1222 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1223 1223
1224 1224 while (ip < ip_end)
1225 1225 *ip++ = value;
1226 1226 }
1227 1227
1228 1228 static boolean_t
1229 1229 ztest_pattern_match(void *buf, uint64_t size, uint64_t value)
1230 1230 {
1231 1231 uint64_t *ip = buf;
1232 1232 uint64_t *ip_end = (uint64_t *)((uintptr_t)buf + (uintptr_t)size);
1233 1233 uint64_t diff = 0;
1234 1234
1235 1235 while (ip < ip_end)
1236 1236 diff |= (value - *ip++);
1237 1237
1238 1238 return (diff == 0);
1239 1239 }
1240 1240
1241 1241 static void
1242 1242 ztest_bt_generate(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1243 1243 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1244 1244 {
1245 1245 bt->bt_magic = BT_MAGIC;
1246 1246 bt->bt_objset = dmu_objset_id(os);
1247 1247 bt->bt_object = object;
1248 1248 bt->bt_offset = offset;
1249 1249 bt->bt_gen = gen;
1250 1250 bt->bt_txg = txg;
1251 1251 bt->bt_crtxg = crtxg;
1252 1252 }
1253 1253
1254 1254 static void
1255 1255 ztest_bt_verify(ztest_block_tag_t *bt, objset_t *os, uint64_t object,
1256 1256 uint64_t offset, uint64_t gen, uint64_t txg, uint64_t crtxg)
1257 1257 {
1258 1258 ASSERT(bt->bt_magic == BT_MAGIC);
1259 1259 ASSERT(bt->bt_objset == dmu_objset_id(os));
1260 1260 ASSERT(bt->bt_object == object);
1261 1261 ASSERT(bt->bt_offset == offset);
1262 1262 ASSERT(bt->bt_gen <= gen);
1263 1263 ASSERT(bt->bt_txg <= txg);
1264 1264 ASSERT(bt->bt_crtxg == crtxg);
1265 1265 }
1266 1266
1267 1267 static ztest_block_tag_t *
1268 1268 ztest_bt_bonus(dmu_buf_t *db)
1269 1269 {
1270 1270 dmu_object_info_t doi;
1271 1271 ztest_block_tag_t *bt;
1272 1272
1273 1273 dmu_object_info_from_db(db, &doi);
1274 1274 ASSERT3U(doi.doi_bonus_size, <=, db->db_size);
1275 1275 ASSERT3U(doi.doi_bonus_size, >=, sizeof (*bt));
1276 1276 bt = (void *)((char *)db->db_data + doi.doi_bonus_size - sizeof (*bt));
1277 1277
1278 1278 return (bt);
1279 1279 }
1280 1280
1281 1281 /*
1282 1282 * ZIL logging ops
1283 1283 */
1284 1284
1285 1285 #define lrz_type lr_mode
1286 1286 #define lrz_blocksize lr_uid
1287 1287 #define lrz_ibshift lr_gid
1288 1288 #define lrz_bonustype lr_rdev
1289 1289 #define lrz_bonuslen lr_crtime[1]
1290 1290
1291 1291 static void
1292 1292 ztest_log_create(ztest_ds_t *zd, dmu_tx_t *tx, lr_create_t *lr)
1293 1293 {
1294 1294 char *name = (void *)(lr + 1); /* name follows lr */
1295 1295 size_t namesize = strlen(name) + 1;
1296 1296 itx_t *itx;
1297 1297
1298 1298 if (zil_replaying(zd->zd_zilog, tx))
1299 1299 return;
1300 1300
1301 1301 itx = zil_itx_create(TX_CREATE, sizeof (*lr) + namesize);
1302 1302 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1303 1303 sizeof (*lr) + namesize - sizeof (lr_t));
1304 1304
1305 1305 zil_itx_assign(zd->zd_zilog, itx, tx);
1306 1306 }
1307 1307
1308 1308 static void
1309 1309 ztest_log_remove(ztest_ds_t *zd, dmu_tx_t *tx, lr_remove_t *lr, uint64_t object)
1310 1310 {
1311 1311 char *name = (void *)(lr + 1); /* name follows lr */
1312 1312 size_t namesize = strlen(name) + 1;
1313 1313 itx_t *itx;
1314 1314
1315 1315 if (zil_replaying(zd->zd_zilog, tx))
1316 1316 return;
1317 1317
1318 1318 itx = zil_itx_create(TX_REMOVE, sizeof (*lr) + namesize);
1319 1319 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1320 1320 sizeof (*lr) + namesize - sizeof (lr_t));
1321 1321
1322 1322 itx->itx_oid = object;
1323 1323 zil_itx_assign(zd->zd_zilog, itx, tx);
1324 1324 }
1325 1325
1326 1326 static void
1327 1327 ztest_log_write(ztest_ds_t *zd, dmu_tx_t *tx, lr_write_t *lr)
1328 1328 {
1329 1329 itx_t *itx;
1330 1330 itx_wr_state_t write_state = ztest_random(WR_NUM_STATES);
1331 1331
1332 1332 if (zil_replaying(zd->zd_zilog, tx))
1333 1333 return;
1334 1334
1335 1335 if (lr->lr_length > ZIL_MAX_LOG_DATA)
1336 1336 write_state = WR_INDIRECT;
1337 1337
1338 1338 itx = zil_itx_create(TX_WRITE,
1339 1339 sizeof (*lr) + (write_state == WR_COPIED ? lr->lr_length : 0));
1340 1340
1341 1341 if (write_state == WR_COPIED &&
1342 1342 dmu_read(zd->zd_os, lr->lr_foid, lr->lr_offset, lr->lr_length,
1343 1343 ((lr_write_t *)&itx->itx_lr) + 1, DMU_READ_NO_PREFETCH) != 0) {
1344 1344 zil_itx_destroy(itx);
1345 1345 itx = zil_itx_create(TX_WRITE, sizeof (*lr));
1346 1346 write_state = WR_NEED_COPY;
1347 1347 }
1348 1348 itx->itx_private = zd;
1349 1349 itx->itx_wr_state = write_state;
1350 1350 itx->itx_sync = (ztest_random(8) == 0);
1351 1351 itx->itx_sod += (write_state == WR_NEED_COPY ? lr->lr_length : 0);
1352 1352
1353 1353 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1354 1354 sizeof (*lr) - sizeof (lr_t));
1355 1355
1356 1356 zil_itx_assign(zd->zd_zilog, itx, tx);
1357 1357 }
1358 1358
1359 1359 static void
1360 1360 ztest_log_truncate(ztest_ds_t *zd, dmu_tx_t *tx, lr_truncate_t *lr)
1361 1361 {
1362 1362 itx_t *itx;
1363 1363
1364 1364 if (zil_replaying(zd->zd_zilog, tx))
1365 1365 return;
1366 1366
1367 1367 itx = zil_itx_create(TX_TRUNCATE, sizeof (*lr));
1368 1368 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1369 1369 sizeof (*lr) - sizeof (lr_t));
1370 1370
1371 1371 itx->itx_sync = B_FALSE;
1372 1372 zil_itx_assign(zd->zd_zilog, itx, tx);
1373 1373 }
1374 1374
1375 1375 static void
1376 1376 ztest_log_setattr(ztest_ds_t *zd, dmu_tx_t *tx, lr_setattr_t *lr)
1377 1377 {
1378 1378 itx_t *itx;
1379 1379
1380 1380 if (zil_replaying(zd->zd_zilog, tx))
1381 1381 return;
1382 1382
1383 1383 itx = zil_itx_create(TX_SETATTR, sizeof (*lr));
1384 1384 bcopy(&lr->lr_common + 1, &itx->itx_lr + 1,
1385 1385 sizeof (*lr) - sizeof (lr_t));
1386 1386
1387 1387 itx->itx_sync = B_FALSE;
1388 1388 zil_itx_assign(zd->zd_zilog, itx, tx);
1389 1389 }
1390 1390
1391 1391 /*
1392 1392 * ZIL replay ops
1393 1393 */
1394 1394 static int
1395 1395 ztest_replay_create(ztest_ds_t *zd, lr_create_t *lr, boolean_t byteswap)
1396 1396 {
1397 1397 char *name = (void *)(lr + 1); /* name follows lr */
1398 1398 objset_t *os = zd->zd_os;
1399 1399 ztest_block_tag_t *bbt;
1400 1400 dmu_buf_t *db;
1401 1401 dmu_tx_t *tx;
1402 1402 uint64_t txg;
1403 1403 int error = 0;
1404 1404
1405 1405 if (byteswap)
1406 1406 byteswap_uint64_array(lr, sizeof (*lr));
1407 1407
1408 1408 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1409 1409 ASSERT(name[0] != '\0');
1410 1410
1411 1411 tx = dmu_tx_create(os);
1412 1412
1413 1413 dmu_tx_hold_zap(tx, lr->lr_doid, B_TRUE, name);
1414 1414
1415 1415 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1416 1416 dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, B_TRUE, NULL);
1417 1417 } else {
1418 1418 dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
1419 1419 }
1420 1420
1421 1421 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1422 1422 if (txg == 0)
1423 1423 return (ENOSPC);
1424 1424
1425 1425 ASSERT(dmu_objset_zil(os)->zl_replay == !!lr->lr_foid);
1426 1426
1427 1427 if (lr->lrz_type == DMU_OT_ZAP_OTHER) {
1428 1428 if (lr->lr_foid == 0) {
1429 1429 lr->lr_foid = zap_create(os,
1430 1430 lr->lrz_type, lr->lrz_bonustype,
1431 1431 lr->lrz_bonuslen, tx);
1432 1432 } else {
1433 1433 error = zap_create_claim(os, lr->lr_foid,
1434 1434 lr->lrz_type, lr->lrz_bonustype,
1435 1435 lr->lrz_bonuslen, tx);
1436 1436 }
1437 1437 } else {
1438 1438 if (lr->lr_foid == 0) {
1439 1439 lr->lr_foid = dmu_object_alloc(os,
1440 1440 lr->lrz_type, 0, lr->lrz_bonustype,
1441 1441 lr->lrz_bonuslen, tx);
1442 1442 } else {
1443 1443 error = dmu_object_claim(os, lr->lr_foid,
1444 1444 lr->lrz_type, 0, lr->lrz_bonustype,
1445 1445 lr->lrz_bonuslen, tx);
1446 1446 }
1447 1447 }
1448 1448
1449 1449 if (error) {
1450 1450 ASSERT3U(error, ==, EEXIST);
1451 1451 ASSERT(zd->zd_zilog->zl_replay);
1452 1452 dmu_tx_commit(tx);
1453 1453 return (error);
1454 1454 }
1455 1455
1456 1456 ASSERT(lr->lr_foid != 0);
1457 1457
1458 1458 if (lr->lrz_type != DMU_OT_ZAP_OTHER)
1459 1459 VERIFY3U(0, ==, dmu_object_set_blocksize(os, lr->lr_foid,
1460 1460 lr->lrz_blocksize, lr->lrz_ibshift, tx));
1461 1461
1462 1462 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1463 1463 bbt = ztest_bt_bonus(db);
1464 1464 dmu_buf_will_dirty(db, tx);
1465 1465 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_gen, txg, txg);
1466 1466 dmu_buf_rele(db, FTAG);
1467 1467
1468 1468 VERIFY3U(0, ==, zap_add(os, lr->lr_doid, name, sizeof (uint64_t), 1,
1469 1469 &lr->lr_foid, tx));
1470 1470
1471 1471 (void) ztest_log_create(zd, tx, lr);
1472 1472
1473 1473 dmu_tx_commit(tx);
1474 1474
1475 1475 return (0);
1476 1476 }
1477 1477
1478 1478 static int
1479 1479 ztest_replay_remove(ztest_ds_t *zd, lr_remove_t *lr, boolean_t byteswap)
1480 1480 {
1481 1481 char *name = (void *)(lr + 1); /* name follows lr */
1482 1482 objset_t *os = zd->zd_os;
1483 1483 dmu_object_info_t doi;
1484 1484 dmu_tx_t *tx;
1485 1485 uint64_t object, txg;
1486 1486
1487 1487 if (byteswap)
1488 1488 byteswap_uint64_array(lr, sizeof (*lr));
1489 1489
1490 1490 ASSERT(lr->lr_doid == ZTEST_DIROBJ);
1491 1491 ASSERT(name[0] != '\0');
1492 1492
1493 1493 VERIFY3U(0, ==,
1494 1494 zap_lookup(os, lr->lr_doid, name, sizeof (object), 1, &object));
1495 1495 ASSERT(object != 0);
1496 1496
1497 1497 ztest_object_lock(zd, object, RL_WRITER);
1498 1498
1499 1499 VERIFY3U(0, ==, dmu_object_info(os, object, &doi));
1500 1500
1501 1501 tx = dmu_tx_create(os);
1502 1502
1503 1503 dmu_tx_hold_zap(tx, lr->lr_doid, B_FALSE, name);
1504 1504 dmu_tx_hold_free(tx, object, 0, DMU_OBJECT_END);
1505 1505
1506 1506 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1507 1507 if (txg == 0) {
1508 1508 ztest_object_unlock(zd, object);
1509 1509 return (ENOSPC);
1510 1510 }
1511 1511
1512 1512 if (doi.doi_type == DMU_OT_ZAP_OTHER) {
1513 1513 VERIFY3U(0, ==, zap_destroy(os, object, tx));
1514 1514 } else {
1515 1515 VERIFY3U(0, ==, dmu_object_free(os, object, tx));
1516 1516 }
1517 1517
1518 1518 VERIFY3U(0, ==, zap_remove(os, lr->lr_doid, name, tx));
1519 1519
1520 1520 (void) ztest_log_remove(zd, tx, lr, object);
1521 1521
1522 1522 dmu_tx_commit(tx);
1523 1523
1524 1524 ztest_object_unlock(zd, object);
1525 1525
1526 1526 return (0);
1527 1527 }
1528 1528
1529 1529 static int
1530 1530 ztest_replay_write(ztest_ds_t *zd, lr_write_t *lr, boolean_t byteswap)
1531 1531 {
1532 1532 objset_t *os = zd->zd_os;
1533 1533 void *data = lr + 1; /* data follows lr */
1534 1534 uint64_t offset, length;
1535 1535 ztest_block_tag_t *bt = data;
1536 1536 ztest_block_tag_t *bbt;
1537 1537 uint64_t gen, txg, lrtxg, crtxg;
1538 1538 dmu_object_info_t doi;
1539 1539 dmu_tx_t *tx;
1540 1540 dmu_buf_t *db;
1541 1541 arc_buf_t *abuf = NULL;
1542 1542 rl_t *rl;
1543 1543
1544 1544 if (byteswap)
1545 1545 byteswap_uint64_array(lr, sizeof (*lr));
1546 1546
1547 1547 offset = lr->lr_offset;
1548 1548 length = lr->lr_length;
1549 1549
1550 1550 /* If it's a dmu_sync() block, write the whole block */
1551 1551 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
1552 1552 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
1553 1553 if (length < blocksize) {
1554 1554 offset -= offset % blocksize;
1555 1555 length = blocksize;
1556 1556 }
1557 1557 }
1558 1558
1559 1559 if (bt->bt_magic == BSWAP_64(BT_MAGIC))
1560 1560 byteswap_uint64_array(bt, sizeof (*bt));
1561 1561
1562 1562 if (bt->bt_magic != BT_MAGIC)
1563 1563 bt = NULL;
1564 1564
1565 1565 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1566 1566 rl = ztest_range_lock(zd, lr->lr_foid, offset, length, RL_WRITER);
1567 1567
1568 1568 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1569 1569
1570 1570 dmu_object_info_from_db(db, &doi);
1571 1571
1572 1572 bbt = ztest_bt_bonus(db);
1573 1573 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1574 1574 gen = bbt->bt_gen;
1575 1575 crtxg = bbt->bt_crtxg;
1576 1576 lrtxg = lr->lr_common.lrc_txg;
1577 1577
1578 1578 tx = dmu_tx_create(os);
1579 1579
1580 1580 dmu_tx_hold_write(tx, lr->lr_foid, offset, length);
1581 1581
1582 1582 if (ztest_random(8) == 0 && length == doi.doi_data_block_size &&
1583 1583 P2PHASE(offset, length) == 0)
1584 1584 abuf = dmu_request_arcbuf(db, length);
1585 1585
1586 1586 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1587 1587 if (txg == 0) {
1588 1588 if (abuf != NULL)
1589 1589 dmu_return_arcbuf(abuf);
1590 1590 dmu_buf_rele(db, FTAG);
1591 1591 ztest_range_unlock(rl);
1592 1592 ztest_object_unlock(zd, lr->lr_foid);
1593 1593 return (ENOSPC);
1594 1594 }
1595 1595
1596 1596 if (bt != NULL) {
1597 1597 /*
1598 1598 * Usually, verify the old data before writing new data --
1599 1599 * but not always, because we also want to verify correct
1600 1600 * behavior when the data was not recently read into cache.
1601 1601 */
1602 1602 ASSERT(offset % doi.doi_data_block_size == 0);
1603 1603 if (ztest_random(4) != 0) {
1604 1604 int prefetch = ztest_random(2) ?
1605 1605 DMU_READ_PREFETCH : DMU_READ_NO_PREFETCH;
1606 1606 ztest_block_tag_t rbt;
1607 1607
1608 1608 VERIFY(dmu_read(os, lr->lr_foid, offset,
1609 1609 sizeof (rbt), &rbt, prefetch) == 0);
1610 1610 if (rbt.bt_magic == BT_MAGIC) {
1611 1611 ztest_bt_verify(&rbt, os, lr->lr_foid,
1612 1612 offset, gen, txg, crtxg);
1613 1613 }
1614 1614 }
1615 1615
1616 1616 /*
1617 1617 * Writes can appear to be newer than the bonus buffer because
1618 1618 * the ztest_get_data() callback does a dmu_read() of the
1619 1619 * open-context data, which may be different than the data
1620 1620 * as it was when the write was generated.
1621 1621 */
1622 1622 if (zd->zd_zilog->zl_replay) {
1623 1623 ztest_bt_verify(bt, os, lr->lr_foid, offset,
1624 1624 MAX(gen, bt->bt_gen), MAX(txg, lrtxg),
1625 1625 bt->bt_crtxg);
1626 1626 }
1627 1627
1628 1628 /*
1629 1629 * Set the bt's gen/txg to the bonus buffer's gen/txg
1630 1630 * so that all of the usual ASSERTs will work.
1631 1631 */
1632 1632 ztest_bt_generate(bt, os, lr->lr_foid, offset, gen, txg, crtxg);
1633 1633 }
1634 1634
1635 1635 if (abuf == NULL) {
1636 1636 dmu_write(os, lr->lr_foid, offset, length, data, tx);
1637 1637 } else {
1638 1638 bcopy(data, abuf->b_data, length);
1639 1639 dmu_assign_arcbuf(db, offset, abuf, tx);
1640 1640 }
1641 1641
1642 1642 (void) ztest_log_write(zd, tx, lr);
1643 1643
1644 1644 dmu_buf_rele(db, FTAG);
1645 1645
1646 1646 dmu_tx_commit(tx);
1647 1647
1648 1648 ztest_range_unlock(rl);
1649 1649 ztest_object_unlock(zd, lr->lr_foid);
1650 1650
1651 1651 return (0);
1652 1652 }
1653 1653
1654 1654 static int
1655 1655 ztest_replay_truncate(ztest_ds_t *zd, lr_truncate_t *lr, boolean_t byteswap)
1656 1656 {
1657 1657 objset_t *os = zd->zd_os;
1658 1658 dmu_tx_t *tx;
1659 1659 uint64_t txg;
1660 1660 rl_t *rl;
1661 1661
1662 1662 if (byteswap)
1663 1663 byteswap_uint64_array(lr, sizeof (*lr));
1664 1664
1665 1665 ztest_object_lock(zd, lr->lr_foid, RL_READER);
1666 1666 rl = ztest_range_lock(zd, lr->lr_foid, lr->lr_offset, lr->lr_length,
1667 1667 RL_WRITER);
1668 1668
1669 1669 tx = dmu_tx_create(os);
1670 1670
1671 1671 dmu_tx_hold_free(tx, lr->lr_foid, lr->lr_offset, lr->lr_length);
1672 1672
1673 1673 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1674 1674 if (txg == 0) {
1675 1675 ztest_range_unlock(rl);
1676 1676 ztest_object_unlock(zd, lr->lr_foid);
1677 1677 return (ENOSPC);
1678 1678 }
1679 1679
1680 1680 VERIFY(dmu_free_range(os, lr->lr_foid, lr->lr_offset,
1681 1681 lr->lr_length, tx) == 0);
1682 1682
1683 1683 (void) ztest_log_truncate(zd, tx, lr);
1684 1684
1685 1685 dmu_tx_commit(tx);
1686 1686
1687 1687 ztest_range_unlock(rl);
1688 1688 ztest_object_unlock(zd, lr->lr_foid);
1689 1689
1690 1690 return (0);
1691 1691 }
1692 1692
1693 1693 static int
1694 1694 ztest_replay_setattr(ztest_ds_t *zd, lr_setattr_t *lr, boolean_t byteswap)
1695 1695 {
1696 1696 objset_t *os = zd->zd_os;
1697 1697 dmu_tx_t *tx;
1698 1698 dmu_buf_t *db;
1699 1699 ztest_block_tag_t *bbt;
1700 1700 uint64_t txg, lrtxg, crtxg;
1701 1701
1702 1702 if (byteswap)
1703 1703 byteswap_uint64_array(lr, sizeof (*lr));
1704 1704
1705 1705 ztest_object_lock(zd, lr->lr_foid, RL_WRITER);
1706 1706
1707 1707 VERIFY3U(0, ==, dmu_bonus_hold(os, lr->lr_foid, FTAG, &db));
1708 1708
1709 1709 tx = dmu_tx_create(os);
1710 1710 dmu_tx_hold_bonus(tx, lr->lr_foid);
1711 1711
1712 1712 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
1713 1713 if (txg == 0) {
1714 1714 dmu_buf_rele(db, FTAG);
1715 1715 ztest_object_unlock(zd, lr->lr_foid);
1716 1716 return (ENOSPC);
1717 1717 }
1718 1718
1719 1719 bbt = ztest_bt_bonus(db);
1720 1720 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1721 1721 crtxg = bbt->bt_crtxg;
1722 1722 lrtxg = lr->lr_common.lrc_txg;
1723 1723
1724 1724 if (zd->zd_zilog->zl_replay) {
1725 1725 ASSERT(lr->lr_size != 0);
1726 1726 ASSERT(lr->lr_mode != 0);
1727 1727 ASSERT(lrtxg != 0);
1728 1728 } else {
1729 1729 /*
1730 1730 * Randomly change the size and increment the generation.
1731 1731 */
1732 1732 lr->lr_size = (ztest_random(db->db_size / sizeof (*bbt)) + 1) *
1733 1733 sizeof (*bbt);
1734 1734 lr->lr_mode = bbt->bt_gen + 1;
1735 1735 ASSERT(lrtxg == 0);
1736 1736 }
1737 1737
1738 1738 /*
1739 1739 * Verify that the current bonus buffer is not newer than our txg.
1740 1740 */
1741 1741 ztest_bt_verify(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode,
1742 1742 MAX(txg, lrtxg), crtxg);
1743 1743
1744 1744 dmu_buf_will_dirty(db, tx);
1745 1745
1746 1746 ASSERT3U(lr->lr_size, >=, sizeof (*bbt));
1747 1747 ASSERT3U(lr->lr_size, <=, db->db_size);
1748 1748 VERIFY0(dmu_set_bonus(db, lr->lr_size, tx));
1749 1749 bbt = ztest_bt_bonus(db);
1750 1750
1751 1751 ztest_bt_generate(bbt, os, lr->lr_foid, -1ULL, lr->lr_mode, txg, crtxg);
1752 1752
1753 1753 dmu_buf_rele(db, FTAG);
1754 1754
1755 1755 (void) ztest_log_setattr(zd, tx, lr);
1756 1756
1757 1757 dmu_tx_commit(tx);
1758 1758
1759 1759 ztest_object_unlock(zd, lr->lr_foid);
1760 1760
1761 1761 return (0);
1762 1762 }
1763 1763
1764 1764 zil_replay_func_t *ztest_replay_vector[TX_MAX_TYPE] = {
1765 1765 NULL, /* 0 no such transaction type */
1766 1766 ztest_replay_create, /* TX_CREATE */
1767 1767 NULL, /* TX_MKDIR */
1768 1768 NULL, /* TX_MKXATTR */
1769 1769 NULL, /* TX_SYMLINK */
1770 1770 ztest_replay_remove, /* TX_REMOVE */
1771 1771 NULL, /* TX_RMDIR */
1772 1772 NULL, /* TX_LINK */
1773 1773 NULL, /* TX_RENAME */
1774 1774 ztest_replay_write, /* TX_WRITE */
1775 1775 ztest_replay_truncate, /* TX_TRUNCATE */
1776 1776 ztest_replay_setattr, /* TX_SETATTR */
1777 1777 NULL, /* TX_ACL */
1778 1778 NULL, /* TX_CREATE_ACL */
1779 1779 NULL, /* TX_CREATE_ATTR */
1780 1780 NULL, /* TX_CREATE_ACL_ATTR */
1781 1781 NULL, /* TX_MKDIR_ACL */
1782 1782 NULL, /* TX_MKDIR_ATTR */
1783 1783 NULL, /* TX_MKDIR_ACL_ATTR */
1784 1784 NULL, /* TX_WRITE2 */
1785 1785 };
1786 1786
1787 1787 /*
1788 1788 * ZIL get_data callbacks
1789 1789 */
1790 1790
1791 1791 static void
1792 1792 ztest_get_done(zgd_t *zgd, int error)
1793 1793 {
1794 1794 ztest_ds_t *zd = zgd->zgd_private;
1795 1795 uint64_t object = zgd->zgd_rl->rl_object;
1796 1796
1797 1797 if (zgd->zgd_db)
1798 1798 dmu_buf_rele(zgd->zgd_db, zgd);
1799 1799
1800 1800 ztest_range_unlock(zgd->zgd_rl);
1801 1801 ztest_object_unlock(zd, object);
1802 1802
1803 1803 if (error == 0 && zgd->zgd_bp)
1804 1804 zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
1805 1805
1806 1806 umem_free(zgd, sizeof (*zgd));
1807 1807 }
1808 1808
1809 1809 static int
1810 1810 ztest_get_data(void *arg, lr_write_t *lr, char *buf, zio_t *zio)
1811 1811 {
1812 1812 ztest_ds_t *zd = arg;
1813 1813 objset_t *os = zd->zd_os;
1814 1814 uint64_t object = lr->lr_foid;
1815 1815 uint64_t offset = lr->lr_offset;
1816 1816 uint64_t size = lr->lr_length;
1817 1817 blkptr_t *bp = &lr->lr_blkptr;
1818 1818 uint64_t txg = lr->lr_common.lrc_txg;
1819 1819 uint64_t crtxg;
1820 1820 dmu_object_info_t doi;
1821 1821 dmu_buf_t *db;
1822 1822 zgd_t *zgd;
1823 1823 int error;
1824 1824
1825 1825 ztest_object_lock(zd, object, RL_READER);
1826 1826 error = dmu_bonus_hold(os, object, FTAG, &db);
1827 1827 if (error) {
1828 1828 ztest_object_unlock(zd, object);
1829 1829 return (error);
1830 1830 }
1831 1831
1832 1832 crtxg = ztest_bt_bonus(db)->bt_crtxg;
1833 1833
1834 1834 if (crtxg == 0 || crtxg > txg) {
1835 1835 dmu_buf_rele(db, FTAG);
1836 1836 ztest_object_unlock(zd, object);
1837 1837 return (ENOENT);
1838 1838 }
1839 1839
1840 1840 dmu_object_info_from_db(db, &doi);
1841 1841 dmu_buf_rele(db, FTAG);
1842 1842 db = NULL;
1843 1843
1844 1844 zgd = umem_zalloc(sizeof (*zgd), UMEM_NOFAIL);
1845 1845 zgd->zgd_zilog = zd->zd_zilog;
1846 1846 zgd->zgd_private = zd;
1847 1847
1848 1848 if (buf != NULL) { /* immediate write */
1849 1849 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1850 1850 RL_READER);
1851 1851
1852 1852 error = dmu_read(os, object, offset, size, buf,
1853 1853 DMU_READ_NO_PREFETCH);
1854 1854 ASSERT(error == 0);
1855 1855 } else {
1856 1856 size = doi.doi_data_block_size;
1857 1857 if (ISP2(size)) {
1858 1858 offset = P2ALIGN(offset, size);
1859 1859 } else {
1860 1860 ASSERT(offset < size);
1861 1861 offset = 0;
1862 1862 }
1863 1863
1864 1864 zgd->zgd_rl = ztest_range_lock(zd, object, offset, size,
1865 1865 RL_READER);
1866 1866
1867 1867 error = dmu_buf_hold(os, object, offset, zgd, &db,
1868 1868 DMU_READ_NO_PREFETCH);
1869 1869
1870 1870 if (error == 0) {
1871 1871 blkptr_t *obp = dmu_buf_get_blkptr(db);
1872 1872 if (obp) {
1873 1873 ASSERT(BP_IS_HOLE(bp));
1874 1874 *bp = *obp;
1875 1875 }
1876 1876
1877 1877 zgd->zgd_db = db;
1878 1878 zgd->zgd_bp = bp;
1879 1879
1880 1880 ASSERT(db->db_offset == offset);
1881 1881 ASSERT(db->db_size == size);
1882 1882
1883 1883 error = dmu_sync(zio, lr->lr_common.lrc_txg,
1884 1884 ztest_get_done, zgd);
1885 1885
1886 1886 if (error == 0)
1887 1887 return (0);
1888 1888 }
1889 1889 }
1890 1890
1891 1891 ztest_get_done(zgd, error);
1892 1892
1893 1893 return (error);
1894 1894 }
1895 1895
1896 1896 static void *
1897 1897 ztest_lr_alloc(size_t lrsize, char *name)
1898 1898 {
1899 1899 char *lr;
1900 1900 size_t namesize = name ? strlen(name) + 1 : 0;
1901 1901
1902 1902 lr = umem_zalloc(lrsize + namesize, UMEM_NOFAIL);
1903 1903
1904 1904 if (name)
1905 1905 bcopy(name, lr + lrsize, namesize);
1906 1906
1907 1907 return (lr);
1908 1908 }
1909 1909
1910 1910 void
1911 1911 ztest_lr_free(void *lr, size_t lrsize, char *name)
1912 1912 {
1913 1913 size_t namesize = name ? strlen(name) + 1 : 0;
1914 1914
1915 1915 umem_free(lr, lrsize + namesize);
1916 1916 }
1917 1917
1918 1918 /*
1919 1919 * Lookup a bunch of objects. Returns the number of objects not found.
1920 1920 */
1921 1921 static int
1922 1922 ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
1923 1923 {
1924 1924 int missing = 0;
1925 1925 int error;
1926 1926
1927 1927 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1928 1928
1929 1929 for (int i = 0; i < count; i++, od++) {
1930 1930 od->od_object = 0;
1931 1931 error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
1932 1932 sizeof (uint64_t), 1, &od->od_object);
1933 1933 if (error) {
1934 1934 ASSERT(error == ENOENT);
1935 1935 ASSERT(od->od_object == 0);
1936 1936 missing++;
1937 1937 } else {
1938 1938 dmu_buf_t *db;
1939 1939 ztest_block_tag_t *bbt;
1940 1940 dmu_object_info_t doi;
1941 1941
1942 1942 ASSERT(od->od_object != 0);
1943 1943 ASSERT(missing == 0); /* there should be no gaps */
1944 1944
1945 1945 ztest_object_lock(zd, od->od_object, RL_READER);
1946 1946 VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
1947 1947 od->od_object, FTAG, &db));
1948 1948 dmu_object_info_from_db(db, &doi);
1949 1949 bbt = ztest_bt_bonus(db);
1950 1950 ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
1951 1951 od->od_type = doi.doi_type;
1952 1952 od->od_blocksize = doi.doi_data_block_size;
1953 1953 od->od_gen = bbt->bt_gen;
1954 1954 dmu_buf_rele(db, FTAG);
1955 1955 ztest_object_unlock(zd, od->od_object);
1956 1956 }
1957 1957 }
1958 1958
1959 1959 return (missing);
1960 1960 }
1961 1961
1962 1962 static int
1963 1963 ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)
1964 1964 {
1965 1965 int missing = 0;
1966 1966
1967 1967 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
1968 1968
1969 1969 for (int i = 0; i < count; i++, od++) {
1970 1970 if (missing) {
1971 1971 od->od_object = 0;
1972 1972 missing++;
1973 1973 continue;
1974 1974 }
1975 1975
1976 1976 lr_create_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
1977 1977
1978 1978 lr->lr_doid = od->od_dir;
1979 1979 lr->lr_foid = 0; /* 0 to allocate, > 0 to claim */
1980 1980 lr->lrz_type = od->od_crtype;
1981 1981 lr->lrz_blocksize = od->od_crblocksize;
1982 1982 lr->lrz_ibshift = ztest_random_ibshift();
1983 1983 lr->lrz_bonustype = DMU_OT_UINT64_OTHER;
1984 1984 lr->lrz_bonuslen = dmu_bonus_max();
1985 1985 lr->lr_gen = od->od_crgen;
1986 1986 lr->lr_crtime[0] = time(NULL);
1987 1987
1988 1988 if (ztest_replay_create(zd, lr, B_FALSE) != 0) {
1989 1989 ASSERT(missing == 0);
1990 1990 od->od_object = 0;
1991 1991 missing++;
1992 1992 } else {
1993 1993 od->od_object = lr->lr_foid;
1994 1994 od->od_type = od->od_crtype;
1995 1995 od->od_blocksize = od->od_crblocksize;
1996 1996 od->od_gen = od->od_crgen;
1997 1997 ASSERT(od->od_object != 0);
1998 1998 }
1999 1999
2000 2000 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2001 2001 }
2002 2002
2003 2003 return (missing);
2004 2004 }
2005 2005
2006 2006 static int
2007 2007 ztest_remove(ztest_ds_t *zd, ztest_od_t *od, int count)
2008 2008 {
2009 2009 int missing = 0;
2010 2010 int error;
2011 2011
2012 2012 ASSERT(_mutex_held(&zd->zd_dirobj_lock));
2013 2013
2014 2014 od += count - 1;
2015 2015
2016 2016 for (int i = count - 1; i >= 0; i--, od--) {
2017 2017 if (missing) {
2018 2018 missing++;
2019 2019 continue;
2020 2020 }
2021 2021
2022 2022 /*
2023 2023 * No object was found.
2024 2024 */
2025 2025 if (od->od_object == 0)
2026 2026 continue;
2027 2027
2028 2028 lr_remove_t *lr = ztest_lr_alloc(sizeof (*lr), od->od_name);
2029 2029
2030 2030 lr->lr_doid = od->od_dir;
2031 2031
2032 2032 if ((error = ztest_replay_remove(zd, lr, B_FALSE)) != 0) {
2033 2033 ASSERT3U(error, ==, ENOSPC);
2034 2034 missing++;
2035 2035 } else {
2036 2036 od->od_object = 0;
2037 2037 }
2038 2038 ztest_lr_free(lr, sizeof (*lr), od->od_name);
2039 2039 }
2040 2040
2041 2041 return (missing);
2042 2042 }
2043 2043
2044 2044 static int
2045 2045 ztest_write(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size,
2046 2046 void *data)
2047 2047 {
2048 2048 lr_write_t *lr;
2049 2049 int error;
2050 2050
2051 2051 lr = ztest_lr_alloc(sizeof (*lr) + size, NULL);
2052 2052
2053 2053 lr->lr_foid = object;
2054 2054 lr->lr_offset = offset;
2055 2055 lr->lr_length = size;
2056 2056 lr->lr_blkoff = 0;
2057 2057 BP_ZERO(&lr->lr_blkptr);
2058 2058
2059 2059 bcopy(data, lr + 1, size);
2060 2060
2061 2061 error = ztest_replay_write(zd, lr, B_FALSE);
2062 2062
2063 2063 ztest_lr_free(lr, sizeof (*lr) + size, NULL);
2064 2064
2065 2065 return (error);
2066 2066 }
2067 2067
2068 2068 static int
2069 2069 ztest_truncate(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2070 2070 {
2071 2071 lr_truncate_t *lr;
2072 2072 int error;
2073 2073
2074 2074 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2075 2075
2076 2076 lr->lr_foid = object;
2077 2077 lr->lr_offset = offset;
2078 2078 lr->lr_length = size;
2079 2079
2080 2080 error = ztest_replay_truncate(zd, lr, B_FALSE);
2081 2081
2082 2082 ztest_lr_free(lr, sizeof (*lr), NULL);
2083 2083
2084 2084 return (error);
2085 2085 }
2086 2086
2087 2087 static int
2088 2088 ztest_setattr(ztest_ds_t *zd, uint64_t object)
2089 2089 {
2090 2090 lr_setattr_t *lr;
2091 2091 int error;
2092 2092
2093 2093 lr = ztest_lr_alloc(sizeof (*lr), NULL);
2094 2094
2095 2095 lr->lr_foid = object;
2096 2096 lr->lr_size = 0;
2097 2097 lr->lr_mode = 0;
2098 2098
2099 2099 error = ztest_replay_setattr(zd, lr, B_FALSE);
2100 2100
2101 2101 ztest_lr_free(lr, sizeof (*lr), NULL);
2102 2102
2103 2103 return (error);
2104 2104 }
2105 2105
2106 2106 static void
2107 2107 ztest_prealloc(ztest_ds_t *zd, uint64_t object, uint64_t offset, uint64_t size)
2108 2108 {
2109 2109 objset_t *os = zd->zd_os;
2110 2110 dmu_tx_t *tx;
2111 2111 uint64_t txg;
2112 2112 rl_t *rl;
2113 2113
2114 2114 txg_wait_synced(dmu_objset_pool(os), 0);
2115 2115
2116 2116 ztest_object_lock(zd, object, RL_READER);
2117 2117 rl = ztest_range_lock(zd, object, offset, size, RL_WRITER);
2118 2118
2119 2119 tx = dmu_tx_create(os);
2120 2120
2121 2121 dmu_tx_hold_write(tx, object, offset, size);
2122 2122
2123 2123 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
2124 2124
2125 2125 if (txg != 0) {
2126 2126 dmu_prealloc(os, object, offset, size, tx);
2127 2127 dmu_tx_commit(tx);
2128 2128 txg_wait_synced(dmu_objset_pool(os), txg);
2129 2129 } else {
2130 2130 (void) dmu_free_long_range(os, object, offset, size);
2131 2131 }
2132 2132
2133 2133 ztest_range_unlock(rl);
2134 2134 ztest_object_unlock(zd, object);
2135 2135 }
2136 2136
2137 2137 static void
2138 2138 ztest_io(ztest_ds_t *zd, uint64_t object, uint64_t offset)
2139 2139 {
2140 2140 int err;
2141 2141 ztest_block_tag_t wbt;
2142 2142 dmu_object_info_t doi;
2143 2143 enum ztest_io_type io_type;
2144 2144 uint64_t blocksize;
2145 2145 void *data;
2146 2146
2147 2147 VERIFY(dmu_object_info(zd->zd_os, object, &doi) == 0);
2148 2148 blocksize = doi.doi_data_block_size;
2149 2149 data = umem_alloc(blocksize, UMEM_NOFAIL);
2150 2150
2151 2151 /*
2152 2152 * Pick an i/o type at random, biased toward writing block tags.
2153 2153 */
2154 2154 io_type = ztest_random(ZTEST_IO_TYPES);
2155 2155 if (ztest_random(2) == 0)
2156 2156 io_type = ZTEST_IO_WRITE_TAG;
2157 2157
2158 2158 (void) rw_rdlock(&zd->zd_zilog_lock);
2159 2159
2160 2160 switch (io_type) {
2161 2161
2162 2162 case ZTEST_IO_WRITE_TAG:
2163 2163 ztest_bt_generate(&wbt, zd->zd_os, object, offset, 0, 0, 0);
2164 2164 (void) ztest_write(zd, object, offset, sizeof (wbt), &wbt);
2165 2165 break;
2166 2166
2167 2167 case ZTEST_IO_WRITE_PATTERN:
2168 2168 (void) memset(data, 'a' + (object + offset) % 5, blocksize);
2169 2169 if (ztest_random(2) == 0) {
2170 2170 /*
2171 2171 * Induce fletcher2 collisions to ensure that
2172 2172 * zio_ddt_collision() detects and resolves them
2173 2173 * when using fletcher2-verify for deduplication.
2174 2174 */
2175 2175 ((uint64_t *)data)[0] ^= 1ULL << 63;
2176 2176 ((uint64_t *)data)[4] ^= 1ULL << 63;
2177 2177 }
2178 2178 (void) ztest_write(zd, object, offset, blocksize, data);
2179 2179 break;
2180 2180
2181 2181 case ZTEST_IO_WRITE_ZEROES:
2182 2182 bzero(data, blocksize);
2183 2183 (void) ztest_write(zd, object, offset, blocksize, data);
2184 2184 break;
2185 2185
2186 2186 case ZTEST_IO_TRUNCATE:
2187 2187 (void) ztest_truncate(zd, object, offset, blocksize);
2188 2188 break;
2189 2189
2190 2190 case ZTEST_IO_SETATTR:
2191 2191 (void) ztest_setattr(zd, object);
2192 2192 break;
2193 2193
2194 2194 case ZTEST_IO_REWRITE:
2195 2195 (void) rw_rdlock(&ztest_name_lock);
2196 2196 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2197 2197 ZFS_PROP_CHECKSUM, spa_dedup_checksum(ztest_spa),
2198 2198 B_FALSE);
2199 2199 VERIFY(err == 0 || err == ENOSPC);
2200 2200 err = ztest_dsl_prop_set_uint64(zd->zd_name,
2201 2201 ZFS_PROP_COMPRESSION,
2202 2202 ztest_random_dsl_prop(ZFS_PROP_COMPRESSION),
2203 2203 B_FALSE);
2204 2204 VERIFY(err == 0 || err == ENOSPC);
2205 2205 (void) rw_unlock(&ztest_name_lock);
2206 2206
2207 2207 VERIFY0(dmu_read(zd->zd_os, object, offset, blocksize, data,
2208 2208 DMU_READ_NO_PREFETCH));
2209 2209
2210 2210 (void) ztest_write(zd, object, offset, blocksize, data);
2211 2211 break;
2212 2212 }
2213 2213
2214 2214 (void) rw_unlock(&zd->zd_zilog_lock);
2215 2215
2216 2216 umem_free(data, blocksize);
2217 2217 }
2218 2218
2219 2219 /*
2220 2220 * Initialize an object description template.
2221 2221 */
2222 2222 static void
2223 2223 ztest_od_init(ztest_od_t *od, uint64_t id, char *tag, uint64_t index,
2224 2224 dmu_object_type_t type, uint64_t blocksize, uint64_t gen)
2225 2225 {
2226 2226 od->od_dir = ZTEST_DIROBJ;
2227 2227 od->od_object = 0;
2228 2228
2229 2229 od->od_crtype = type;
2230 2230 od->od_crblocksize = blocksize ? blocksize : ztest_random_blocksize();
2231 2231 od->od_crgen = gen;
2232 2232
2233 2233 od->od_type = DMU_OT_NONE;
2234 2234 od->od_blocksize = 0;
2235 2235 od->od_gen = 0;
2236 2236
2237 2237 (void) snprintf(od->od_name, sizeof (od->od_name), "%s(%lld)[%llu]",
2238 2238 tag, (int64_t)id, index);
2239 2239 }
2240 2240
2241 2241 /*
2242 2242 * Lookup or create the objects for a test using the od template.
2243 2243 * If the objects do not all exist, or if 'remove' is specified,
2244 2244 * remove any existing objects and create new ones. Otherwise,
2245 2245 * use the existing objects.
2246 2246 */
2247 2247 static int
2248 2248 ztest_object_init(ztest_ds_t *zd, ztest_od_t *od, size_t size, boolean_t remove)
2249 2249 {
2250 2250 int count = size / sizeof (*od);
2251 2251 int rv = 0;
2252 2252
2253 2253 VERIFY(mutex_lock(&zd->zd_dirobj_lock) == 0);
2254 2254 if ((ztest_lookup(zd, od, count) != 0 || remove) &&
2255 2255 (ztest_remove(zd, od, count) != 0 ||
2256 2256 ztest_create(zd, od, count) != 0))
2257 2257 rv = -1;
2258 2258 zd->zd_od = od;
2259 2259 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2260 2260
2261 2261 return (rv);
2262 2262 }
2263 2263
2264 2264 /* ARGSUSED */
2265 2265 void
2266 2266 ztest_zil_commit(ztest_ds_t *zd, uint64_t id)
2267 2267 {
2268 2268 zilog_t *zilog = zd->zd_zilog;
2269 2269
2270 2270 (void) rw_rdlock(&zd->zd_zilog_lock);
2271 2271
2272 2272 zil_commit(zilog, ztest_random(ZTEST_OBJECTS));
2273 2273
2274 2274 /*
2275 2275 * Remember the committed values in zd, which is in parent/child
2276 2276 * shared memory. If we die, the next iteration of ztest_run()
2277 2277 * will verify that the log really does contain this record.
2278 2278 */
2279 2279 mutex_enter(&zilog->zl_lock);
2280 2280 ASSERT(zd->zd_shared != NULL);
2281 2281 ASSERT3U(zd->zd_shared->zd_seq, <=, zilog->zl_commit_lr_seq);
2282 2282 zd->zd_shared->zd_seq = zilog->zl_commit_lr_seq;
2283 2283 mutex_exit(&zilog->zl_lock);
2284 2284
2285 2285 (void) rw_unlock(&zd->zd_zilog_lock);
2286 2286 }
2287 2287
2288 2288 /*
2289 2289 * This function is designed to simulate the operations that occur during a
2290 2290 * mount/unmount operation. We hold the dataset across these operations in an
2291 2291 * attempt to expose any implicit assumptions about ZIL management.
2292 2292 */
2293 2293 /* ARGSUSED */
2294 2294 void
2295 2295 ztest_zil_remount(ztest_ds_t *zd, uint64_t id)
2296 2296 {
2297 2297 objset_t *os = zd->zd_os;
2298 2298
2299 2299 /*
2300 2300 * We grab the zd_dirobj_lock to ensure that no other thread is
2301 2301 * updating the zil (i.e. adding in-memory log records) and the
2302 2302 * zd_zilog_lock to block any I/O.
2303 2303 */
2304 2304 VERIFY0(mutex_lock(&zd->zd_dirobj_lock));
2305 2305 (void) rw_wrlock(&zd->zd_zilog_lock);
2306 2306
2307 2307 /* zfsvfs_teardown() */
2308 2308 zil_close(zd->zd_zilog);
2309 2309
2310 2310 /* zfsvfs_setup() */
2311 2311 VERIFY(zil_open(os, ztest_get_data) == zd->zd_zilog);
2312 2312 zil_replay(os, zd, ztest_replay_vector);
2313 2313
2314 2314 (void) rw_unlock(&zd->zd_zilog_lock);
2315 2315 VERIFY(mutex_unlock(&zd->zd_dirobj_lock) == 0);
2316 2316 }
2317 2317
2318 2318 /*
2319 2319 * Verify that we can't destroy an active pool, create an existing pool,
2320 2320 * or create a pool with a bad vdev spec.
2321 2321 */
2322 2322 /* ARGSUSED */
2323 2323 void
2324 2324 ztest_spa_create_destroy(ztest_ds_t *zd, uint64_t id)
2325 2325 {
2326 2326 ztest_shared_opts_t *zo = &ztest_opts;
2327 2327 spa_t *spa;
2328 2328 nvlist_t *nvroot;
2329 2329
2330 2330 /*
2331 2331 * Attempt to create using a bad file.
2332 2332 */
2333 2333 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
2334 2334 VERIFY3U(ENOENT, ==,
2335 2335 spa_create("ztest_bad_file", nvroot, NULL, NULL));
2336 2336 nvlist_free(nvroot);
2337 2337
2338 2338 /*
2339 2339 * Attempt to create using a bad mirror.
2340 2340 */
2341 2341 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 2, 1);
2342 2342 VERIFY3U(ENOENT, ==,
2343 2343 spa_create("ztest_bad_mirror", nvroot, NULL, NULL));
2344 2344 nvlist_free(nvroot);
2345 2345
2346 2346 /*
2347 2347 * Attempt to create an existing pool. It shouldn't matter
2348 2348 * what's in the nvroot; we should fail with EEXIST.
2349 2349 */
2350 2350 (void) rw_rdlock(&ztest_name_lock);
2351 2351 nvroot = make_vdev_root("/dev/bogus", NULL, NULL, 0, 0, 0, 0, 0, 1);
2352 2352 VERIFY3U(EEXIST, ==, spa_create(zo->zo_pool, nvroot, NULL, NULL));
2353 2353 nvlist_free(nvroot);
2354 2354 VERIFY3U(0, ==, spa_open(zo->zo_pool, &spa, FTAG));
2355 2355 VERIFY3U(EBUSY, ==, spa_destroy(zo->zo_pool));
2356 2356 spa_close(spa, FTAG);
2357 2357
2358 2358 (void) rw_unlock(&ztest_name_lock);
2359 2359 }
2360 2360
2361 2361 /* ARGSUSED */
2362 2362 void
2363 2363 ztest_spa_upgrade(ztest_ds_t *zd, uint64_t id)
2364 2364 {
2365 2365 spa_t *spa;
2366 2366 uint64_t initial_version = SPA_VERSION_INITIAL;
2367 2367 uint64_t version, newversion;
2368 2368 nvlist_t *nvroot, *props;
2369 2369 char *name;
2370 2370
2371 2371 VERIFY0(mutex_lock(&ztest_vdev_lock));
2372 2372 name = kmem_asprintf("%s_upgrade", ztest_opts.zo_pool);
2373 2373
2374 2374 /*
2375 2375 * Clean up from previous runs.
2376 2376 */
2377 2377 (void) spa_destroy(name);
2378 2378
2379 2379 nvroot = make_vdev_root(NULL, NULL, name, ztest_opts.zo_vdev_size, 0,
2380 2380 0, ztest_opts.zo_raidz, ztest_opts.zo_mirrors, 1);
2381 2381
2382 2382 /*
2383 2383 * If we're configuring a RAIDZ device then make sure that the
2384 2384 * the initial version is capable of supporting that feature.
2385 2385 */
2386 2386 switch (ztest_opts.zo_raidz_parity) {
2387 2387 case 0:
2388 2388 case 1:
2389 2389 initial_version = SPA_VERSION_INITIAL;
2390 2390 break;
2391 2391 case 2:
2392 2392 initial_version = SPA_VERSION_RAIDZ2;
2393 2393 break;
2394 2394 case 3:
2395 2395 initial_version = SPA_VERSION_RAIDZ3;
2396 2396 break;
2397 2397 }
2398 2398
2399 2399 /*
2400 2400 * Create a pool with a spa version that can be upgraded. Pick
2401 2401 * a value between initial_version and SPA_VERSION_BEFORE_FEATURES.
2402 2402 */
2403 2403 do {
2404 2404 version = ztest_random_spa_version(initial_version);
2405 2405 } while (version > SPA_VERSION_BEFORE_FEATURES);
2406 2406
2407 2407 props = fnvlist_alloc();
2408 2408 fnvlist_add_uint64(props,
2409 2409 zpool_prop_to_name(ZPOOL_PROP_VERSION), version);
2410 2410 VERIFY0(spa_create(name, nvroot, props, NULL));
2411 2411 fnvlist_free(nvroot);
2412 2412 fnvlist_free(props);
2413 2413
2414 2414 VERIFY0(spa_open(name, &spa, FTAG));
2415 2415 VERIFY3U(spa_version(spa), ==, version);
2416 2416 newversion = ztest_random_spa_version(version + 1);
2417 2417
2418 2418 if (ztest_opts.zo_verbose >= 4) {
2419 2419 (void) printf("upgrading spa version from %llu to %llu\n",
2420 2420 (u_longlong_t)version, (u_longlong_t)newversion);
2421 2421 }
2422 2422
2423 2423 spa_upgrade(spa, newversion);
2424 2424 VERIFY3U(spa_version(spa), >, version);
2425 2425 VERIFY3U(spa_version(spa), ==, fnvlist_lookup_uint64(spa->spa_config,
2426 2426 zpool_prop_to_name(ZPOOL_PROP_VERSION)));
2427 2427 spa_close(spa, FTAG);
2428 2428
2429 2429 strfree(name);
2430 2430 VERIFY0(mutex_unlock(&ztest_vdev_lock));
2431 2431 }
2432 2432
2433 2433 static vdev_t *
2434 2434 vdev_lookup_by_path(vdev_t *vd, const char *path)
2435 2435 {
2436 2436 vdev_t *mvd;
2437 2437
2438 2438 if (vd->vdev_path != NULL && strcmp(path, vd->vdev_path) == 0)
2439 2439 return (vd);
2440 2440
2441 2441 for (int c = 0; c < vd->vdev_children; c++)
2442 2442 if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], path)) !=
2443 2443 NULL)
2444 2444 return (mvd);
2445 2445
2446 2446 return (NULL);
2447 2447 }
2448 2448
2449 2449 /*
2450 2450 * Find the first available hole which can be used as a top-level.
2451 2451 */
2452 2452 int
2453 2453 find_vdev_hole(spa_t *spa)
2454 2454 {
2455 2455 vdev_t *rvd = spa->spa_root_vdev;
2456 2456 int c;
2457 2457
2458 2458 ASSERT(spa_config_held(spa, SCL_VDEV, RW_READER) == SCL_VDEV);
2459 2459
2460 2460 for (c = 0; c < rvd->vdev_children; c++) {
2461 2461 vdev_t *cvd = rvd->vdev_child[c];
2462 2462
2463 2463 if (cvd->vdev_ishole)
2464 2464 break;
2465 2465 }
2466 2466 return (c);
2467 2467 }
2468 2468
2469 2469 /*
2470 2470 * Verify that vdev_add() works as expected.
2471 2471 */
2472 2472 /* ARGSUSED */
2473 2473 void
2474 2474 ztest_vdev_add_remove(ztest_ds_t *zd, uint64_t id)
2475 2475 {
2476 2476 ztest_shared_t *zs = ztest_shared;
2477 2477 spa_t *spa = ztest_spa;
2478 2478 uint64_t leaves;
2479 2479 uint64_t guid;
2480 2480 nvlist_t *nvroot;
2481 2481 int error;
2482 2482
2483 2483 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2484 2484 leaves = MAX(zs->zs_mirrors + zs->zs_splits, 1) * ztest_opts.zo_raidz;
2485 2485
2486 2486 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2487 2487
2488 2488 ztest_shared->zs_vdev_next_leaf = find_vdev_hole(spa) * leaves;
2489 2489
2490 2490 /*
2491 2491 * If we have slogs then remove them 1/4 of the time.
2492 2492 */
2493 2493 if (spa_has_slogs(spa) && ztest_random(4) == 0) {
2494 2494 /*
2495 2495 * Grab the guid from the head of the log class rotor.
2496 2496 */
2497 2497 guid = spa_log_class(spa)->mc_rotor->mg_vd->vdev_guid;
2498 2498
2499 2499 spa_config_exit(spa, SCL_VDEV, FTAG);
2500 2500
2501 2501 /*
2502 2502 * We have to grab the zs_name_lock as writer to
2503 2503 * prevent a race between removing a slog (dmu_objset_find)
2504 2504 * and destroying a dataset. Removing the slog will
2505 2505 * grab a reference on the dataset which may cause
2506 2506 * dmu_objset_destroy() to fail with EBUSY thus
2507 2507 * leaving the dataset in an inconsistent state.
2508 2508 */
2509 2509 VERIFY(rw_wrlock(&ztest_name_lock) == 0);
2510 2510 error = spa_vdev_remove(spa, guid, B_FALSE);
2511 2511 VERIFY(rw_unlock(&ztest_name_lock) == 0);
2512 2512
2513 2513 if (error && error != EEXIST)
2514 2514 fatal(0, "spa_vdev_remove() = %d", error);
2515 2515 } else {
2516 2516 spa_config_exit(spa, SCL_VDEV, FTAG);
2517 2517
2518 2518 /*
2519 2519 * Make 1/4 of the devices be log devices.
2520 2520 */
2521 2521 nvroot = make_vdev_root(NULL, NULL, NULL,
2522 2522 ztest_opts.zo_vdev_size, 0,
2523 2523 ztest_random(4) == 0, ztest_opts.zo_raidz,
2524 2524 zs->zs_mirrors, 1);
2525 2525
2526 2526 error = spa_vdev_add(spa, nvroot);
2527 2527 nvlist_free(nvroot);
2528 2528
2529 2529 if (error == ENOSPC)
2530 2530 ztest_record_enospc("spa_vdev_add");
2531 2531 else if (error != 0)
2532 2532 fatal(0, "spa_vdev_add() = %d", error);
2533 2533 }
2534 2534
2535 2535 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2536 2536 }
2537 2537
2538 2538 /*
2539 2539 * Verify that adding/removing aux devices (l2arc, hot spare) works as expected.
2540 2540 */
2541 2541 /* ARGSUSED */
2542 2542 void
2543 2543 ztest_vdev_aux_add_remove(ztest_ds_t *zd, uint64_t id)
2544 2544 {
2545 2545 ztest_shared_t *zs = ztest_shared;
2546 2546 spa_t *spa = ztest_spa;
2547 2547 vdev_t *rvd = spa->spa_root_vdev;
2548 2548 spa_aux_vdev_t *sav;
2549 2549 char *aux;
2550 2550 uint64_t guid = 0;
2551 2551 int error;
2552 2552
2553 2553 if (ztest_random(2) == 0) {
2554 2554 sav = &spa->spa_spares;
2555 2555 aux = ZPOOL_CONFIG_SPARES;
2556 2556 } else {
2557 2557 sav = &spa->spa_l2cache;
2558 2558 aux = ZPOOL_CONFIG_L2CACHE;
2559 2559 }
2560 2560
2561 2561 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2562 2562
2563 2563 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2564 2564
2565 2565 if (sav->sav_count != 0 && ztest_random(4) == 0) {
2566 2566 /*
2567 2567 * Pick a random device to remove.
2568 2568 */
2569 2569 guid = sav->sav_vdevs[ztest_random(sav->sav_count)]->vdev_guid;
2570 2570 } else {
2571 2571 /*
2572 2572 * Find an unused device we can add.
2573 2573 */
2574 2574 zs->zs_vdev_aux = 0;
2575 2575 for (;;) {
2576 2576 char path[MAXPATHLEN];
2577 2577 int c;
2578 2578 (void) snprintf(path, sizeof (path), ztest_aux_template,
2579 2579 ztest_opts.zo_dir, ztest_opts.zo_pool, aux,
2580 2580 zs->zs_vdev_aux);
2581 2581 for (c = 0; c < sav->sav_count; c++)
2582 2582 if (strcmp(sav->sav_vdevs[c]->vdev_path,
2583 2583 path) == 0)
2584 2584 break;
2585 2585 if (c == sav->sav_count &&
2586 2586 vdev_lookup_by_path(rvd, path) == NULL)
2587 2587 break;
2588 2588 zs->zs_vdev_aux++;
2589 2589 }
2590 2590 }
2591 2591
2592 2592 spa_config_exit(spa, SCL_VDEV, FTAG);
2593 2593
2594 2594 if (guid == 0) {
2595 2595 /*
2596 2596 * Add a new device.
2597 2597 */
2598 2598 nvlist_t *nvroot = make_vdev_root(NULL, aux, NULL,
2599 2599 (ztest_opts.zo_vdev_size * 5) / 4, 0, 0, 0, 0, 1);
2600 2600 error = spa_vdev_add(spa, nvroot);
2601 2601 if (error != 0)
2602 2602 fatal(0, "spa_vdev_add(%p) = %d", nvroot, error);
2603 2603 nvlist_free(nvroot);
2604 2604 } else {
2605 2605 /*
2606 2606 * Remove an existing device. Sometimes, dirty its
2607 2607 * vdev state first to make sure we handle removal
2608 2608 * of devices that have pending state changes.
2609 2609 */
2610 2610 if (ztest_random(2) == 0)
2611 2611 (void) vdev_online(spa, guid, 0, NULL);
2612 2612
2613 2613 error = spa_vdev_remove(spa, guid, B_FALSE);
2614 2614 if (error != 0 && error != EBUSY)
2615 2615 fatal(0, "spa_vdev_remove(%llu) = %d", guid, error);
2616 2616 }
2617 2617
2618 2618 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2619 2619 }
2620 2620
2621 2621 /*
2622 2622 * split a pool if it has mirror tlvdevs
2623 2623 */
2624 2624 /* ARGSUSED */
2625 2625 void
2626 2626 ztest_split_pool(ztest_ds_t *zd, uint64_t id)
2627 2627 {
2628 2628 ztest_shared_t *zs = ztest_shared;
2629 2629 spa_t *spa = ztest_spa;
2630 2630 vdev_t *rvd = spa->spa_root_vdev;
2631 2631 nvlist_t *tree, **child, *config, *split, **schild;
2632 2632 uint_t c, children, schildren = 0, lastlogid = 0;
2633 2633 int error = 0;
2634 2634
2635 2635 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2636 2636
2637 2637 /* ensure we have a useable config; mirrors of raidz aren't supported */
2638 2638 if (zs->zs_mirrors < 3 || ztest_opts.zo_raidz > 1) {
2639 2639 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2640 2640 return;
2641 2641 }
2642 2642
2643 2643 /* clean up the old pool, if any */
2644 2644 (void) spa_destroy("splitp");
2645 2645
2646 2646 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2647 2647
2648 2648 /* generate a config from the existing config */
2649 2649 mutex_enter(&spa->spa_props_lock);
2650 2650 VERIFY(nvlist_lookup_nvlist(spa->spa_config, ZPOOL_CONFIG_VDEV_TREE,
2651 2651 &tree) == 0);
2652 2652 mutex_exit(&spa->spa_props_lock);
2653 2653
2654 2654 VERIFY(nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN, &child,
2655 2655 &children) == 0);
2656 2656
2657 2657 schild = malloc(rvd->vdev_children * sizeof (nvlist_t *));
2658 2658 for (c = 0; c < children; c++) {
2659 2659 vdev_t *tvd = rvd->vdev_child[c];
2660 2660 nvlist_t **mchild;
2661 2661 uint_t mchildren;
2662 2662
2663 2663 if (tvd->vdev_islog || tvd->vdev_ops == &vdev_hole_ops) {
2664 2664 VERIFY(nvlist_alloc(&schild[schildren], NV_UNIQUE_NAME,
2665 2665 0) == 0);
2666 2666 VERIFY(nvlist_add_string(schild[schildren],
2667 2667 ZPOOL_CONFIG_TYPE, VDEV_TYPE_HOLE) == 0);
2668 2668 VERIFY(nvlist_add_uint64(schild[schildren],
2669 2669 ZPOOL_CONFIG_IS_HOLE, 1) == 0);
2670 2670 if (lastlogid == 0)
2671 2671 lastlogid = schildren;
2672 2672 ++schildren;
2673 2673 continue;
2674 2674 }
2675 2675 lastlogid = 0;
2676 2676 VERIFY(nvlist_lookup_nvlist_array(child[c],
2677 2677 ZPOOL_CONFIG_CHILDREN, &mchild, &mchildren) == 0);
2678 2678 VERIFY(nvlist_dup(mchild[0], &schild[schildren++], 0) == 0);
2679 2679 }
2680 2680
2681 2681 /* OK, create a config that can be used to split */
2682 2682 VERIFY(nvlist_alloc(&split, NV_UNIQUE_NAME, 0) == 0);
2683 2683 VERIFY(nvlist_add_string(split, ZPOOL_CONFIG_TYPE,
2684 2684 VDEV_TYPE_ROOT) == 0);
2685 2685 VERIFY(nvlist_add_nvlist_array(split, ZPOOL_CONFIG_CHILDREN, schild,
2686 2686 lastlogid != 0 ? lastlogid : schildren) == 0);
2687 2687
2688 2688 VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, 0) == 0);
2689 2689 VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, split) == 0);
2690 2690
2691 2691 for (c = 0; c < schildren; c++)
2692 2692 nvlist_free(schild[c]);
2693 2693 free(schild);
2694 2694 nvlist_free(split);
2695 2695
2696 2696 spa_config_exit(spa, SCL_VDEV, FTAG);
2697 2697
2698 2698 (void) rw_wrlock(&ztest_name_lock);
2699 2699 error = spa_vdev_split_mirror(spa, "splitp", config, NULL, B_FALSE);
2700 2700 (void) rw_unlock(&ztest_name_lock);
2701 2701
2702 2702 nvlist_free(config);
2703 2703
2704 2704 if (error == 0) {
2705 2705 (void) printf("successful split - results:\n");
2706 2706 mutex_enter(&spa_namespace_lock);
2707 2707 show_pool_stats(spa);
2708 2708 show_pool_stats(spa_lookup("splitp"));
2709 2709 mutex_exit(&spa_namespace_lock);
2710 2710 ++zs->zs_splits;
2711 2711 --zs->zs_mirrors;
2712 2712 }
2713 2713 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2714 2714
2715 2715 }
2716 2716
2717 2717 /*
2718 2718 * Verify that we can attach and detach devices.
2719 2719 */
2720 2720 /* ARGSUSED */
2721 2721 void
2722 2722 ztest_vdev_attach_detach(ztest_ds_t *zd, uint64_t id)
2723 2723 {
2724 2724 ztest_shared_t *zs = ztest_shared;
2725 2725 spa_t *spa = ztest_spa;
2726 2726 spa_aux_vdev_t *sav = &spa->spa_spares;
2727 2727 vdev_t *rvd = spa->spa_root_vdev;
2728 2728 vdev_t *oldvd, *newvd, *pvd;
2729 2729 nvlist_t *root;
2730 2730 uint64_t leaves;
2731 2731 uint64_t leaf, top;
2732 2732 uint64_t ashift = ztest_get_ashift();
2733 2733 uint64_t oldguid, pguid;
2734 2734 size_t oldsize, newsize;
2735 2735 char oldpath[MAXPATHLEN], newpath[MAXPATHLEN];
2736 2736 int replacing;
2737 2737 int oldvd_has_siblings = B_FALSE;
2738 2738 int newvd_is_spare = B_FALSE;
2739 2739 int oldvd_is_log;
2740 2740 int error, expected_error;
2741 2741
2742 2742 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
2743 2743 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
2744 2744
2745 2745 spa_config_enter(spa, SCL_VDEV, FTAG, RW_READER);
2746 2746
2747 2747 /*
2748 2748 * Decide whether to do an attach or a replace.
2749 2749 */
2750 2750 replacing = ztest_random(2);
2751 2751
2752 2752 /*
2753 2753 * Pick a random top-level vdev.
2754 2754 */
2755 2755 top = ztest_random_vdev_top(spa, B_TRUE);
2756 2756
2757 2757 /*
2758 2758 * Pick a random leaf within it.
2759 2759 */
2760 2760 leaf = ztest_random(leaves);
2761 2761
2762 2762 /*
2763 2763 * Locate this vdev.
2764 2764 */
2765 2765 oldvd = rvd->vdev_child[top];
2766 2766 if (zs->zs_mirrors >= 1) {
2767 2767 ASSERT(oldvd->vdev_ops == &vdev_mirror_ops);
2768 2768 ASSERT(oldvd->vdev_children >= zs->zs_mirrors);
2769 2769 oldvd = oldvd->vdev_child[leaf / ztest_opts.zo_raidz];
2770 2770 }
2771 2771 if (ztest_opts.zo_raidz > 1) {
2772 2772 ASSERT(oldvd->vdev_ops == &vdev_raidz_ops);
2773 2773 ASSERT(oldvd->vdev_children == ztest_opts.zo_raidz);
2774 2774 oldvd = oldvd->vdev_child[leaf % ztest_opts.zo_raidz];
2775 2775 }
2776 2776
2777 2777 /*
2778 2778 * If we're already doing an attach or replace, oldvd may be a
2779 2779 * mirror vdev -- in which case, pick a random child.
2780 2780 */
2781 2781 while (oldvd->vdev_children != 0) {
2782 2782 oldvd_has_siblings = B_TRUE;
2783 2783 ASSERT(oldvd->vdev_children >= 2);
2784 2784 oldvd = oldvd->vdev_child[ztest_random(oldvd->vdev_children)];
2785 2785 }
2786 2786
2787 2787 oldguid = oldvd->vdev_guid;
2788 2788 oldsize = vdev_get_min_asize(oldvd);
2789 2789 oldvd_is_log = oldvd->vdev_top->vdev_islog;
2790 2790 (void) strcpy(oldpath, oldvd->vdev_path);
2791 2791 pvd = oldvd->vdev_parent;
2792 2792 pguid = pvd->vdev_guid;
2793 2793
2794 2794 /*
2795 2795 * If oldvd has siblings, then half of the time, detach it.
2796 2796 */
2797 2797 if (oldvd_has_siblings && ztest_random(2) == 0) {
2798 2798 spa_config_exit(spa, SCL_VDEV, FTAG);
2799 2799 error = spa_vdev_detach(spa, oldguid, pguid, B_FALSE);
2800 2800 if (error != 0 && error != ENODEV && error != EBUSY &&
2801 2801 error != ENOTSUP)
2802 2802 fatal(0, "detach (%s) returned %d", oldpath, error);
2803 2803 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2804 2804 return;
2805 2805 }
2806 2806
2807 2807 /*
2808 2808 * For the new vdev, choose with equal probability between the two
2809 2809 * standard paths (ending in either 'a' or 'b') or a random hot spare.
2810 2810 */
2811 2811 if (sav->sav_count != 0 && ztest_random(3) == 0) {
2812 2812 newvd = sav->sav_vdevs[ztest_random(sav->sav_count)];
2813 2813 newvd_is_spare = B_TRUE;
2814 2814 (void) strcpy(newpath, newvd->vdev_path);
2815 2815 } else {
2816 2816 (void) snprintf(newpath, sizeof (newpath), ztest_dev_template,
2817 2817 ztest_opts.zo_dir, ztest_opts.zo_pool,
2818 2818 top * leaves + leaf);
2819 2819 if (ztest_random(2) == 0)
2820 2820 newpath[strlen(newpath) - 1] = 'b';
2821 2821 newvd = vdev_lookup_by_path(rvd, newpath);
2822 2822 }
2823 2823
2824 2824 if (newvd) {
2825 2825 newsize = vdev_get_min_asize(newvd);
2826 2826 } else {
2827 2827 /*
2828 2828 * Make newsize a little bigger or smaller than oldsize.
2829 2829 * If it's smaller, the attach should fail.
2830 2830 * If it's larger, and we're doing a replace,
2831 2831 * we should get dynamic LUN growth when we're done.
2832 2832 */
2833 2833 newsize = 10 * oldsize / (9 + ztest_random(3));
2834 2834 }
2835 2835
2836 2836 /*
2837 2837 * If pvd is not a mirror or root, the attach should fail with ENOTSUP,
2838 2838 * unless it's a replace; in that case any non-replacing parent is OK.
2839 2839 *
2840 2840 * If newvd is already part of the pool, it should fail with EBUSY.
2841 2841 *
2842 2842 * If newvd is too small, it should fail with EOVERFLOW.
2843 2843 */
2844 2844 if (pvd->vdev_ops != &vdev_mirror_ops &&
2845 2845 pvd->vdev_ops != &vdev_root_ops && (!replacing ||
2846 2846 pvd->vdev_ops == &vdev_replacing_ops ||
2847 2847 pvd->vdev_ops == &vdev_spare_ops))
2848 2848 expected_error = ENOTSUP;
2849 2849 else if (newvd_is_spare && (!replacing || oldvd_is_log))
2850 2850 expected_error = ENOTSUP;
2851 2851 else if (newvd == oldvd)
2852 2852 expected_error = replacing ? 0 : EBUSY;
2853 2853 else if (vdev_lookup_by_path(rvd, newpath) != NULL)
2854 2854 expected_error = EBUSY;
2855 2855 else if (newsize < oldsize)
2856 2856 expected_error = EOVERFLOW;
2857 2857 else if (ashift > oldvd->vdev_top->vdev_ashift)
2858 2858 expected_error = EDOM;
2859 2859 else
2860 2860 expected_error = 0;
2861 2861
2862 2862 spa_config_exit(spa, SCL_VDEV, FTAG);
2863 2863
2864 2864 /*
2865 2865 * Build the nvlist describing newpath.
2866 2866 */
2867 2867 root = make_vdev_root(newpath, NULL, NULL, newvd == NULL ? newsize : 0,
2868 2868 ashift, 0, 0, 0, 1);
2869 2869
2870 2870 error = spa_vdev_attach(spa, oldguid, root, replacing);
2871 2871
2872 2872 nvlist_free(root);
2873 2873
2874 2874 /*
2875 2875 * If our parent was the replacing vdev, but the replace completed,
2876 2876 * then instead of failing with ENOTSUP we may either succeed,
2877 2877 * fail with ENODEV, or fail with EOVERFLOW.
2878 2878 */
2879 2879 if (expected_error == ENOTSUP &&
2880 2880 (error == 0 || error == ENODEV || error == EOVERFLOW))
2881 2881 expected_error = error;
2882 2882
2883 2883 /*
2884 2884 * If someone grew the LUN, the replacement may be too small.
2885 2885 */
2886 2886 if (error == EOVERFLOW || error == EBUSY)
2887 2887 expected_error = error;
2888 2888
2889 2889 /* XXX workaround 6690467 */
2890 2890 if (error != expected_error && expected_error != EBUSY) {
2891 2891 fatal(0, "attach (%s %llu, %s %llu, %d) "
2892 2892 "returned %d, expected %d",
2893 2893 oldpath, (longlong_t)oldsize, newpath,
2894 2894 (longlong_t)newsize, replacing, error, expected_error);
2895 2895 }
2896 2896
2897 2897 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
2898 2898 }
2899 2899
2900 2900 /*
2901 2901 * Callback function which expands the physical size of the vdev.
2902 2902 */
2903 2903 vdev_t *
2904 2904 grow_vdev(vdev_t *vd, void *arg)
2905 2905 {
2906 2906 spa_t *spa = vd->vdev_spa;
2907 2907 size_t *newsize = arg;
2908 2908 size_t fsize;
2909 2909 int fd;
2910 2910
2911 2911 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2912 2912 ASSERT(vd->vdev_ops->vdev_op_leaf);
2913 2913
2914 2914 if ((fd = open(vd->vdev_path, O_RDWR)) == -1)
2915 2915 return (vd);
2916 2916
2917 2917 fsize = lseek(fd, 0, SEEK_END);
2918 2918 (void) ftruncate(fd, *newsize);
2919 2919
2920 2920 if (ztest_opts.zo_verbose >= 6) {
2921 2921 (void) printf("%s grew from %lu to %lu bytes\n",
2922 2922 vd->vdev_path, (ulong_t)fsize, (ulong_t)*newsize);
2923 2923 }
2924 2924 (void) close(fd);
2925 2925 return (NULL);
2926 2926 }
2927 2927
2928 2928 /*
2929 2929 * Callback function which expands a given vdev by calling vdev_online().
2930 2930 */
2931 2931 /* ARGSUSED */
2932 2932 vdev_t *
2933 2933 online_vdev(vdev_t *vd, void *arg)
2934 2934 {
2935 2935 spa_t *spa = vd->vdev_spa;
2936 2936 vdev_t *tvd = vd->vdev_top;
2937 2937 uint64_t guid = vd->vdev_guid;
2938 2938 uint64_t generation = spa->spa_config_generation + 1;
2939 2939 vdev_state_t newstate = VDEV_STATE_UNKNOWN;
2940 2940 int error;
2941 2941
2942 2942 ASSERT(spa_config_held(spa, SCL_STATE, RW_READER) == SCL_STATE);
2943 2943 ASSERT(vd->vdev_ops->vdev_op_leaf);
2944 2944
2945 2945 /* Calling vdev_online will initialize the new metaslabs */
2946 2946 spa_config_exit(spa, SCL_STATE, spa);
2947 2947 error = vdev_online(spa, guid, ZFS_ONLINE_EXPAND, &newstate);
2948 2948 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
2949 2949
2950 2950 /*
2951 2951 * If vdev_online returned an error or the underlying vdev_open
2952 2952 * failed then we abort the expand. The only way to know that
2953 2953 * vdev_open fails is by checking the returned newstate.
2954 2954 */
2955 2955 if (error || newstate != VDEV_STATE_HEALTHY) {
2956 2956 if (ztest_opts.zo_verbose >= 5) {
2957 2957 (void) printf("Unable to expand vdev, state %llu, "
2958 2958 "error %d\n", (u_longlong_t)newstate, error);
2959 2959 }
2960 2960 return (vd);
2961 2961 }
2962 2962 ASSERT3U(newstate, ==, VDEV_STATE_HEALTHY);
2963 2963
2964 2964 /*
2965 2965 * Since we dropped the lock we need to ensure that we're
2966 2966 * still talking to the original vdev. It's possible this
2967 2967 * vdev may have been detached/replaced while we were
2968 2968 * trying to online it.
2969 2969 */
2970 2970 if (generation != spa->spa_config_generation) {
2971 2971 if (ztest_opts.zo_verbose >= 5) {
2972 2972 (void) printf("vdev configuration has changed, "
2973 2973 "guid %llu, state %llu, expected gen %llu, "
2974 2974 "got gen %llu\n",
2975 2975 (u_longlong_t)guid,
2976 2976 (u_longlong_t)tvd->vdev_state,
2977 2977 (u_longlong_t)generation,
2978 2978 (u_longlong_t)spa->spa_config_generation);
2979 2979 }
2980 2980 return (vd);
2981 2981 }
2982 2982 return (NULL);
2983 2983 }
2984 2984
2985 2985 /*
2986 2986 * Traverse the vdev tree calling the supplied function.
2987 2987 * We continue to walk the tree until we either have walked all
2988 2988 * children or we receive a non-NULL return from the callback.
2989 2989 * If a NULL callback is passed, then we just return back the first
2990 2990 * leaf vdev we encounter.
2991 2991 */
2992 2992 vdev_t *
2993 2993 vdev_walk_tree(vdev_t *vd, vdev_t *(*func)(vdev_t *, void *), void *arg)
2994 2994 {
2995 2995 if (vd->vdev_ops->vdev_op_leaf) {
2996 2996 if (func == NULL)
2997 2997 return (vd);
2998 2998 else
2999 2999 return (func(vd, arg));
3000 3000 }
3001 3001
3002 3002 for (uint_t c = 0; c < vd->vdev_children; c++) {
3003 3003 vdev_t *cvd = vd->vdev_child[c];
3004 3004 if ((cvd = vdev_walk_tree(cvd, func, arg)) != NULL)
3005 3005 return (cvd);
3006 3006 }
3007 3007 return (NULL);
3008 3008 }
3009 3009
3010 3010 /*
3011 3011 * Verify that dynamic LUN growth works as expected.
3012 3012 */
3013 3013 /* ARGSUSED */
3014 3014 void
3015 3015 ztest_vdev_LUN_growth(ztest_ds_t *zd, uint64_t id)
3016 3016 {
3017 3017 spa_t *spa = ztest_spa;
3018 3018 vdev_t *vd, *tvd;
3019 3019 metaslab_class_t *mc;
3020 3020 metaslab_group_t *mg;
3021 3021 size_t psize, newsize;
3022 3022 uint64_t top;
3023 3023 uint64_t old_class_space, new_class_space, old_ms_count, new_ms_count;
3024 3024
3025 3025 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
3026 3026 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3027 3027
3028 3028 top = ztest_random_vdev_top(spa, B_TRUE);
3029 3029
3030 3030 tvd = spa->spa_root_vdev->vdev_child[top];
3031 3031 mg = tvd->vdev_mg;
3032 3032 mc = mg->mg_class;
3033 3033 old_ms_count = tvd->vdev_ms_count;
3034 3034 old_class_space = metaslab_class_get_space(mc);
3035 3035
3036 3036 /*
3037 3037 * Determine the size of the first leaf vdev associated with
3038 3038 * our top-level device.
3039 3039 */
3040 3040 vd = vdev_walk_tree(tvd, NULL, NULL);
3041 3041 ASSERT3P(vd, !=, NULL);
3042 3042 ASSERT(vd->vdev_ops->vdev_op_leaf);
3043 3043
3044 3044 psize = vd->vdev_psize;
3045 3045
3046 3046 /*
3047 3047 * We only try to expand the vdev if it's healthy, less than 4x its
3048 3048 * original size, and it has a valid psize.
3049 3049 */
3050 3050 if (tvd->vdev_state != VDEV_STATE_HEALTHY ||
3051 3051 psize == 0 || psize >= 4 * ztest_opts.zo_vdev_size) {
3052 3052 spa_config_exit(spa, SCL_STATE, spa);
3053 3053 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3054 3054 return;
3055 3055 }
3056 3056 ASSERT(psize > 0);
3057 3057 newsize = psize + psize / 8;
3058 3058 ASSERT3U(newsize, >, psize);
3059 3059
3060 3060 if (ztest_opts.zo_verbose >= 6) {
3061 3061 (void) printf("Expanding LUN %s from %lu to %lu\n",
3062 3062 vd->vdev_path, (ulong_t)psize, (ulong_t)newsize);
3063 3063 }
3064 3064
3065 3065 /*
3066 3066 * Growing the vdev is a two step process:
3067 3067 * 1). expand the physical size (i.e. relabel)
3068 3068 * 2). online the vdev to create the new metaslabs
3069 3069 */
3070 3070 if (vdev_walk_tree(tvd, grow_vdev, &newsize) != NULL ||
3071 3071 vdev_walk_tree(tvd, online_vdev, NULL) != NULL ||
3072 3072 tvd->vdev_state != VDEV_STATE_HEALTHY) {
3073 3073 if (ztest_opts.zo_verbose >= 5) {
3074 3074 (void) printf("Could not expand LUN because "
3075 3075 "the vdev configuration changed.\n");
3076 3076 }
3077 3077 spa_config_exit(spa, SCL_STATE, spa);
3078 3078 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3079 3079 return;
3080 3080 }
3081 3081
3082 3082 spa_config_exit(spa, SCL_STATE, spa);
3083 3083
3084 3084 /*
3085 3085 * Expanding the LUN will update the config asynchronously,
3086 3086 * thus we must wait for the async thread to complete any
3087 3087 * pending tasks before proceeding.
3088 3088 */
3089 3089 for (;;) {
3090 3090 boolean_t done;
3091 3091 mutex_enter(&spa->spa_async_lock);
3092 3092 done = (spa->spa_async_thread == NULL && !spa->spa_async_tasks);
3093 3093 mutex_exit(&spa->spa_async_lock);
3094 3094 if (done)
3095 3095 break;
3096 3096 txg_wait_synced(spa_get_dsl(spa), 0);
3097 3097 (void) poll(NULL, 0, 100);
3098 3098 }
3099 3099
3100 3100 spa_config_enter(spa, SCL_STATE, spa, RW_READER);
3101 3101
3102 3102 tvd = spa->spa_root_vdev->vdev_child[top];
3103 3103 new_ms_count = tvd->vdev_ms_count;
3104 3104 new_class_space = metaslab_class_get_space(mc);
3105 3105
3106 3106 if (tvd->vdev_mg != mg || mg->mg_class != mc) {
3107 3107 if (ztest_opts.zo_verbose >= 5) {
3108 3108 (void) printf("Could not verify LUN expansion due to "
3109 3109 "intervening vdev offline or remove.\n");
3110 3110 }
3111 3111 spa_config_exit(spa, SCL_STATE, spa);
3112 3112 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3113 3113 return;
3114 3114 }
3115 3115
3116 3116 /*
3117 3117 * Make sure we were able to grow the vdev.
3118 3118 */
3119 3119 if (new_ms_count <= old_ms_count)
3120 3120 fatal(0, "LUN expansion failed: ms_count %llu <= %llu\n",
3121 3121 old_ms_count, new_ms_count);
3122 3122
3123 3123 /*
3124 3124 * Make sure we were able to grow the pool.
3125 3125 */
3126 3126 if (new_class_space <= old_class_space)
3127 3127 fatal(0, "LUN expansion failed: class_space %llu <= %llu\n",
3128 3128 old_class_space, new_class_space);
3129 3129
3130 3130 if (ztest_opts.zo_verbose >= 5) {
3131 3131 char oldnumbuf[6], newnumbuf[6];
3132 3132
3133 3133 nicenum(old_class_space, oldnumbuf);
3134 3134 nicenum(new_class_space, newnumbuf);
3135 3135 (void) printf("%s grew from %s to %s\n",
3136 3136 spa->spa_name, oldnumbuf, newnumbuf);
3137 3137 }
3138 3138
3139 3139 spa_config_exit(spa, SCL_STATE, spa);
3140 3140 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
3141 3141 }
3142 3142
3143 3143 /*
3144 3144 * Verify that dmu_objset_{create,destroy,open,close} work as expected.
3145 3145 */
3146 3146 /* ARGSUSED */
3147 3147 static void
3148 3148 ztest_objset_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
3149 3149 {
3150 3150 /*
3151 3151 * Create the objects common to all ztest datasets.
3152 3152 */
3153 3153 VERIFY(zap_create_claim(os, ZTEST_DIROBJ,
3154 3154 DMU_OT_ZAP_OTHER, DMU_OT_NONE, 0, tx) == 0);
3155 3155 }
3156 3156
3157 3157 static int
3158 3158 ztest_dataset_create(char *dsname)
3159 3159 {
3160 3160 uint64_t zilset = ztest_random(100);
3161 3161 int err = dmu_objset_create(dsname, DMU_OST_OTHER, 0,
3162 3162 ztest_objset_create_cb, NULL);
3163 3163
3164 3164 if (err || zilset < 80)
3165 3165 return (err);
3166 3166
3167 3167 if (ztest_opts.zo_verbose >= 6)
3168 3168 (void) printf("Setting dataset %s to sync always\n", dsname);
3169 3169 return (ztest_dsl_prop_set_uint64(dsname, ZFS_PROP_SYNC,
3170 3170 ZFS_SYNC_ALWAYS, B_FALSE));
3171 3171 }
3172 3172
3173 3173 /* ARGSUSED */
3174 3174 static int
3175 3175 ztest_objset_destroy_cb(const char *name, void *arg)
3176 3176 {
3177 3177 objset_t *os;
3178 3178 dmu_object_info_t doi;
3179 3179 int error;
3180 3180
3181 3181 /*
3182 3182 * Verify that the dataset contains a directory object.
3183 3183 */
3184 3184 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_TRUE, FTAG, &os));
3185 3185 error = dmu_object_info(os, ZTEST_DIROBJ, &doi);
3186 3186 if (error != ENOENT) {
3187 3187 /* We could have crashed in the middle of destroying it */
3188 3188 ASSERT0(error);
3189 3189 ASSERT3U(doi.doi_type, ==, DMU_OT_ZAP_OTHER);
3190 3190 ASSERT3S(doi.doi_physical_blocks_512, >=, 0);
3191 3191 }
3192 3192 dmu_objset_disown(os, FTAG);
3193 3193
3194 3194 /*
3195 3195 * Destroy the dataset.
3196 3196 */
3197 3197 if (strchr(name, '@') != NULL) {
3198 3198 VERIFY0(dsl_destroy_snapshot(name, B_FALSE));
3199 3199 } else {
3200 3200 VERIFY0(dsl_destroy_head(name));
3201 3201 }
3202 3202 return (0);
3203 3203 }
3204 3204
3205 3205 static boolean_t
3206 3206 ztest_snapshot_create(char *osname, uint64_t id)
3207 3207 {
3208 3208 char snapname[MAXNAMELEN];
3209 3209 int error;
3210 3210
3211 3211 (void) snprintf(snapname, sizeof (snapname), "%llu", (u_longlong_t)id);
3212 3212
3213 3213 error = dmu_objset_snapshot_one(osname, snapname);
3214 3214 if (error == ENOSPC) {
3215 3215 ztest_record_enospc(FTAG);
3216 3216 return (B_FALSE);
3217 3217 }
3218 3218 if (error != 0 && error != EEXIST) {
3219 3219 fatal(0, "ztest_snapshot_create(%s@%s) = %d", osname,
3220 3220 snapname, error);
3221 3221 }
3222 3222 return (B_TRUE);
3223 3223 }
3224 3224
3225 3225 static boolean_t
3226 3226 ztest_snapshot_destroy(char *osname, uint64_t id)
3227 3227 {
3228 3228 char snapname[MAXNAMELEN];
3229 3229 int error;
3230 3230
3231 3231 (void) snprintf(snapname, MAXNAMELEN, "%s@%llu", osname,
3232 3232 (u_longlong_t)id);
3233 3233
3234 3234 error = dsl_destroy_snapshot(snapname, B_FALSE);
3235 3235 if (error != 0 && error != ENOENT)
3236 3236 fatal(0, "ztest_snapshot_destroy(%s) = %d", snapname, error);
3237 3237 return (B_TRUE);
3238 3238 }
3239 3239
3240 3240 /* ARGSUSED */
3241 3241 void
3242 3242 ztest_dmu_objset_create_destroy(ztest_ds_t *zd, uint64_t id)
3243 3243 {
3244 3244 ztest_ds_t zdtmp;
3245 3245 int iters;
3246 3246 int error;
3247 3247 objset_t *os, *os2;
3248 3248 char name[MAXNAMELEN];
3249 3249 zilog_t *zilog;
3250 3250
3251 3251 (void) rw_rdlock(&ztest_name_lock);
3252 3252
3253 3253 (void) snprintf(name, MAXNAMELEN, "%s/temp_%llu",
3254 3254 ztest_opts.zo_pool, (u_longlong_t)id);
3255 3255
3256 3256 /*
3257 3257 * If this dataset exists from a previous run, process its replay log
3258 3258 * half of the time. If we don't replay it, then dmu_objset_destroy()
3259 3259 * (invoked from ztest_objset_destroy_cb()) should just throw it away.
3260 3260 */
3261 3261 if (ztest_random(2) == 0 &&
3262 3262 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os) == 0) {
3263 3263 ztest_zd_init(&zdtmp, NULL, os);
3264 3264 zil_replay(os, &zdtmp, ztest_replay_vector);
3265 3265 ztest_zd_fini(&zdtmp);
3266 3266 dmu_objset_disown(os, FTAG);
3267 3267 }
3268 3268
3269 3269 /*
3270 3270 * There may be an old instance of the dataset we're about to
3271 3271 * create lying around from a previous run. If so, destroy it
3272 3272 * and all of its snapshots.
3273 3273 */
3274 3274 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
3275 3275 DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
3276 3276
3277 3277 /*
3278 3278 * Verify that the destroyed dataset is no longer in the namespace.
3279 3279 */
3280 3280 VERIFY3U(ENOENT, ==, dmu_objset_own(name, DMU_OST_OTHER, B_TRUE,
3281 3281 FTAG, &os));
3282 3282
3283 3283 /*
3284 3284 * Verify that we can create a new dataset.
3285 3285 */
3286 3286 error = ztest_dataset_create(name);
3287 3287 if (error) {
3288 3288 if (error == ENOSPC) {
3289 3289 ztest_record_enospc(FTAG);
3290 3290 (void) rw_unlock(&ztest_name_lock);
3291 3291 return;
3292 3292 }
3293 3293 fatal(0, "dmu_objset_create(%s) = %d", name, error);
3294 3294 }
3295 3295
3296 3296 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os));
3297 3297
3298 3298 ztest_zd_init(&zdtmp, NULL, os);
3299 3299
3300 3300 /*
3301 3301 * Open the intent log for it.
3302 3302 */
3303 3303 zilog = zil_open(os, ztest_get_data);
3304 3304
3305 3305 /*
3306 3306 * Put some objects in there, do a little I/O to them,
3307 3307 * and randomly take a couple of snapshots along the way.
3308 3308 */
3309 3309 iters = ztest_random(5);
3310 3310 for (int i = 0; i < iters; i++) {
3311 3311 ztest_dmu_object_alloc_free(&zdtmp, id);
3312 3312 if (ztest_random(iters) == 0)
3313 3313 (void) ztest_snapshot_create(name, i);
3314 3314 }
3315 3315
3316 3316 /*
3317 3317 * Verify that we cannot create an existing dataset.
3318 3318 */
3319 3319 VERIFY3U(EEXIST, ==,
3320 3320 dmu_objset_create(name, DMU_OST_OTHER, 0, NULL, NULL));
3321 3321
3322 3322 /*
3323 3323 * Verify that we can hold an objset that is also owned.
3324 3324 */
3325 3325 VERIFY3U(0, ==, dmu_objset_hold(name, FTAG, &os2));
3326 3326 dmu_objset_rele(os2, FTAG);
3327 3327
3328 3328 /*
3329 3329 * Verify that we cannot own an objset that is already owned.
3330 3330 */
3331 3331 VERIFY3U(EBUSY, ==,
3332 3332 dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, FTAG, &os2));
3333 3333
3334 3334 zil_close(zilog);
3335 3335 dmu_objset_disown(os, FTAG);
3336 3336 ztest_zd_fini(&zdtmp);
3337 3337
3338 3338 (void) rw_unlock(&ztest_name_lock);
3339 3339 }
3340 3340
3341 3341 /*
3342 3342 * Verify that dmu_snapshot_{create,destroy,open,close} work as expected.
3343 3343 */
3344 3344 void
3345 3345 ztest_dmu_snapshot_create_destroy(ztest_ds_t *zd, uint64_t id)
3346 3346 {
3347 3347 (void) rw_rdlock(&ztest_name_lock);
3348 3348 (void) ztest_snapshot_destroy(zd->zd_name, id);
3349 3349 (void) ztest_snapshot_create(zd->zd_name, id);
3350 3350 (void) rw_unlock(&ztest_name_lock);
3351 3351 }
3352 3352
3353 3353 /*
3354 3354 * Cleanup non-standard snapshots and clones.
3355 3355 */
3356 3356 void
3357 3357 ztest_dsl_dataset_cleanup(char *osname, uint64_t id)
3358 3358 {
3359 3359 char snap1name[MAXNAMELEN];
3360 3360 char clone1name[MAXNAMELEN];
3361 3361 char snap2name[MAXNAMELEN];
3362 3362 char clone2name[MAXNAMELEN];
3363 3363 char snap3name[MAXNAMELEN];
3364 3364 int error;
3365 3365
3366 3366 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3367 3367 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3368 3368 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3369 3369 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3370 3370 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3371 3371
3372 3372 error = dsl_destroy_head(clone2name);
3373 3373 if (error && error != ENOENT)
3374 3374 fatal(0, "dsl_destroy_head(%s) = %d", clone2name, error);
3375 3375 error = dsl_destroy_snapshot(snap3name, B_FALSE);
3376 3376 if (error && error != ENOENT)
3377 3377 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap3name, error);
3378 3378 error = dsl_destroy_snapshot(snap2name, B_FALSE);
3379 3379 if (error && error != ENOENT)
3380 3380 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap2name, error);
3381 3381 error = dsl_destroy_head(clone1name);
3382 3382 if (error && error != ENOENT)
3383 3383 fatal(0, "dsl_destroy_head(%s) = %d", clone1name, error);
3384 3384 error = dsl_destroy_snapshot(snap1name, B_FALSE);
3385 3385 if (error && error != ENOENT)
3386 3386 fatal(0, "dsl_destroy_snapshot(%s) = %d", snap1name, error);
3387 3387 }
3388 3388
3389 3389 /*
3390 3390 * Verify dsl_dataset_promote handles EBUSY
3391 3391 */
3392 3392 void
3393 3393 ztest_dsl_dataset_promote_busy(ztest_ds_t *zd, uint64_t id)
3394 3394 {
3395 3395 objset_t *os;
3396 3396 char snap1name[MAXNAMELEN];
3397 3397 char clone1name[MAXNAMELEN];
3398 3398 char snap2name[MAXNAMELEN];
3399 3399 char clone2name[MAXNAMELEN];
3400 3400 char snap3name[MAXNAMELEN];
3401 3401 char *osname = zd->zd_name;
3402 3402 int error;
3403 3403
3404 3404 (void) rw_rdlock(&ztest_name_lock);
3405 3405
3406 3406 ztest_dsl_dataset_cleanup(osname, id);
3407 3407
3408 3408 (void) snprintf(snap1name, MAXNAMELEN, "%s@s1_%llu", osname, id);
3409 3409 (void) snprintf(clone1name, MAXNAMELEN, "%s/c1_%llu", osname, id);
3410 3410 (void) snprintf(snap2name, MAXNAMELEN, "%s@s2_%llu", clone1name, id);
3411 3411 (void) snprintf(clone2name, MAXNAMELEN, "%s/c2_%llu", osname, id);
3412 3412 (void) snprintf(snap3name, MAXNAMELEN, "%s@s3_%llu", clone1name, id);
3413 3413
3414 3414 error = dmu_objset_snapshot_one(osname, strchr(snap1name, '@') + 1);
3415 3415 if (error && error != EEXIST) {
3416 3416 if (error == ENOSPC) {
3417 3417 ztest_record_enospc(FTAG);
3418 3418 goto out;
3419 3419 }
3420 3420 fatal(0, "dmu_take_snapshot(%s) = %d", snap1name, error);
3421 3421 }
3422 3422
3423 3423 error = dmu_objset_clone(clone1name, snap1name);
3424 3424 if (error) {
3425 3425 if (error == ENOSPC) {
3426 3426 ztest_record_enospc(FTAG);
3427 3427 goto out;
3428 3428 }
3429 3429 fatal(0, "dmu_objset_create(%s) = %d", clone1name, error);
3430 3430 }
3431 3431
3432 3432 error = dmu_objset_snapshot_one(clone1name, strchr(snap2name, '@') + 1);
3433 3433 if (error && error != EEXIST) {
3434 3434 if (error == ENOSPC) {
3435 3435 ztest_record_enospc(FTAG);
3436 3436 goto out;
3437 3437 }
3438 3438 fatal(0, "dmu_open_snapshot(%s) = %d", snap2name, error);
3439 3439 }
3440 3440
3441 3441 error = dmu_objset_snapshot_one(clone1name, strchr(snap3name, '@') + 1);
3442 3442 if (error && error != EEXIST) {
3443 3443 if (error == ENOSPC) {
3444 3444 ztest_record_enospc(FTAG);
3445 3445 goto out;
3446 3446 }
3447 3447 fatal(0, "dmu_open_snapshot(%s) = %d", snap3name, error);
3448 3448 }
3449 3449
3450 3450 error = dmu_objset_clone(clone2name, snap3name);
3451 3451 if (error) {
3452 3452 if (error == ENOSPC) {
3453 3453 ztest_record_enospc(FTAG);
3454 3454 goto out;
3455 3455 }
3456 3456 fatal(0, "dmu_objset_create(%s) = %d", clone2name, error);
3457 3457 }
3458 3458
3459 3459 error = dmu_objset_own(snap2name, DMU_OST_ANY, B_TRUE, FTAG, &os);
3460 3460 if (error)
3461 3461 fatal(0, "dmu_objset_own(%s) = %d", snap2name, error);
3462 3462 error = dsl_dataset_promote(clone2name, NULL);
3463 3463 if (error != EBUSY)
3464 3464 fatal(0, "dsl_dataset_promote(%s), %d, not EBUSY", clone2name,
3465 3465 error);
3466 3466 dmu_objset_disown(os, FTAG);
3467 3467
3468 3468 out:
3469 3469 ztest_dsl_dataset_cleanup(osname, id);
3470 3470
3471 3471 (void) rw_unlock(&ztest_name_lock);
3472 3472 }
3473 3473
3474 3474 /*
3475 3475 * Verify that dmu_object_{alloc,free} work as expected.
3476 3476 */
3477 3477 void
3478 3478 ztest_dmu_object_alloc_free(ztest_ds_t *zd, uint64_t id)
3479 3479 {
3480 3480 ztest_od_t od[4];
3481 3481 int batchsize = sizeof (od) / sizeof (od[0]);
3482 3482
3483 3483 for (int b = 0; b < batchsize; b++)
3484 3484 ztest_od_init(&od[b], id, FTAG, b, DMU_OT_UINT64_OTHER, 0, 0);
3485 3485
3486 3486 /*
3487 3487 * Destroy the previous batch of objects, create a new batch,
3488 3488 * and do some I/O on the new objects.
3489 3489 */
3490 3490 if (ztest_object_init(zd, od, sizeof (od), B_TRUE) != 0)
3491 3491 return;
3492 3492
3493 3493 while (ztest_random(4 * batchsize) != 0)
3494 3494 ztest_io(zd, od[ztest_random(batchsize)].od_object,
3495 3495 ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
3496 3496 }
3497 3497
3498 3498 /*
3499 3499 * Verify that dmu_{read,write} work as expected.
3500 3500 */
3501 3501 void
3502 3502 ztest_dmu_read_write(ztest_ds_t *zd, uint64_t id)
3503 3503 {
3504 3504 objset_t *os = zd->zd_os;
3505 3505 ztest_od_t od[2];
3506 3506 dmu_tx_t *tx;
3507 3507 int i, freeit, error;
3508 3508 uint64_t n, s, txg;
3509 3509 bufwad_t *packbuf, *bigbuf, *pack, *bigH, *bigT;
3510 3510 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3511 3511 uint64_t chunksize = (1000 + ztest_random(1000)) * sizeof (uint64_t);
3512 3512 uint64_t regions = 997;
3513 3513 uint64_t stride = 123456789ULL;
3514 3514 uint64_t width = 40;
3515 3515 int free_percent = 5;
3516 3516
3517 3517 /*
3518 3518 * This test uses two objects, packobj and bigobj, that are always
3519 3519 * updated together (i.e. in the same tx) so that their contents are
3520 3520 * in sync and can be compared. Their contents relate to each other
3521 3521 * in a simple way: packobj is a dense array of 'bufwad' structures,
3522 3522 * while bigobj is a sparse array of the same bufwads. Specifically,
3523 3523 * for any index n, there are three bufwads that should be identical:
3524 3524 *
3525 3525 * packobj, at offset n * sizeof (bufwad_t)
3526 3526 * bigobj, at the head of the nth chunk
3527 3527 * bigobj, at the tail of the nth chunk
3528 3528 *
3529 3529 * The chunk size is arbitrary. It doesn't have to be a power of two,
3530 3530 * and it doesn't have any relation to the object blocksize.
3531 3531 * The only requirement is that it can hold at least two bufwads.
3532 3532 *
3533 3533 * Normally, we write the bufwad to each of these locations.
3534 3534 * However, free_percent of the time we instead write zeroes to
3535 3535 * packobj and perform a dmu_free_range() on bigobj. By comparing
3536 3536 * bigobj to packobj, we can verify that the DMU is correctly
3537 3537 * tracking which parts of an object are allocated and free,
3538 3538 * and that the contents of the allocated blocks are correct.
3539 3539 */
3540 3540
3541 3541 /*
3542 3542 * Read the directory info. If it's the first time, set things up.
3543 3543 */
3544 3544 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, chunksize);
3545 3545 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3546 3546
3547 3547 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3548 3548 return;
3549 3549
3550 3550 bigobj = od[0].od_object;
3551 3551 packobj = od[1].od_object;
3552 3552 chunksize = od[0].od_gen;
3553 3553 ASSERT(chunksize == od[1].od_gen);
3554 3554
3555 3555 /*
3556 3556 * Prefetch a random chunk of the big object.
3557 3557 * Our aim here is to get some async reads in flight
3558 3558 * for blocks that we may free below; the DMU should
3559 3559 * handle this race correctly.
3560 3560 */
3561 3561 n = ztest_random(regions) * stride + ztest_random(width);
3562 3562 s = 1 + ztest_random(2 * width - 1);
3563 3563 dmu_prefetch(os, bigobj, n * chunksize, s * chunksize);
3564 3564
3565 3565 /*
3566 3566 * Pick a random index and compute the offsets into packobj and bigobj.
3567 3567 */
3568 3568 n = ztest_random(regions) * stride + ztest_random(width);
3569 3569 s = 1 + ztest_random(width - 1);
3570 3570
3571 3571 packoff = n * sizeof (bufwad_t);
3572 3572 packsize = s * sizeof (bufwad_t);
3573 3573
3574 3574 bigoff = n * chunksize;
3575 3575 bigsize = s * chunksize;
3576 3576
3577 3577 packbuf = umem_alloc(packsize, UMEM_NOFAIL);
3578 3578 bigbuf = umem_alloc(bigsize, UMEM_NOFAIL);
3579 3579
3580 3580 /*
3581 3581 * free_percent of the time, free a range of bigobj rather than
3582 3582 * overwriting it.
3583 3583 */
3584 3584 freeit = (ztest_random(100) < free_percent);
3585 3585
3586 3586 /*
3587 3587 * Read the current contents of our objects.
3588 3588 */
3589 3589 error = dmu_read(os, packobj, packoff, packsize, packbuf,
3590 3590 DMU_READ_PREFETCH);
3591 3591 ASSERT0(error);
3592 3592 error = dmu_read(os, bigobj, bigoff, bigsize, bigbuf,
3593 3593 DMU_READ_PREFETCH);
3594 3594 ASSERT0(error);
3595 3595
3596 3596 /*
3597 3597 * Get a tx for the mods to both packobj and bigobj.
|
↓ open down ↓ |
3597 lines elided |
↑ open up ↑ |
3598 3598 */
3599 3599 tx = dmu_tx_create(os);
3600 3600
3601 3601 dmu_tx_hold_write(tx, packobj, packoff, packsize);
3602 3602
3603 3603 if (freeit)
3604 3604 dmu_tx_hold_free(tx, bigobj, bigoff, bigsize);
3605 3605 else
3606 3606 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3607 3607
3608 + /* This accounts for setting the checksum/compression. */
3609 + dmu_tx_hold_bonus(tx, bigobj);
3610 +
3608 3611 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3609 3612 if (txg == 0) {
3610 3613 umem_free(packbuf, packsize);
3611 3614 umem_free(bigbuf, bigsize);
3612 3615 return;
3613 3616 }
3614 3617
3615 3618 dmu_object_set_checksum(os, bigobj,
3616 3619 (enum zio_checksum)ztest_random_dsl_prop(ZFS_PROP_CHECKSUM), tx);
3617 3620
3618 3621 dmu_object_set_compress(os, bigobj,
3619 3622 (enum zio_compress)ztest_random_dsl_prop(ZFS_PROP_COMPRESSION), tx);
3620 3623
3621 3624 /*
3622 3625 * For each index from n to n + s, verify that the existing bufwad
3623 3626 * in packobj matches the bufwads at the head and tail of the
3624 3627 * corresponding chunk in bigobj. Then update all three bufwads
3625 3628 * with the new values we want to write out.
3626 3629 */
3627 3630 for (i = 0; i < s; i++) {
3628 3631 /* LINTED */
3629 3632 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3630 3633 /* LINTED */
3631 3634 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3632 3635 /* LINTED */
3633 3636 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3634 3637
3635 3638 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3636 3639 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3637 3640
3638 3641 if (pack->bw_txg > txg)
3639 3642 fatal(0, "future leak: got %llx, open txg is %llx",
3640 3643 pack->bw_txg, txg);
3641 3644
3642 3645 if (pack->bw_data != 0 && pack->bw_index != n + i)
3643 3646 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3644 3647 pack->bw_index, n, i);
3645 3648
3646 3649 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3647 3650 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3648 3651
3649 3652 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3650 3653 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3651 3654
3652 3655 if (freeit) {
3653 3656 bzero(pack, sizeof (bufwad_t));
3654 3657 } else {
3655 3658 pack->bw_index = n + i;
3656 3659 pack->bw_txg = txg;
3657 3660 pack->bw_data = 1 + ztest_random(-2ULL);
3658 3661 }
3659 3662 *bigH = *pack;
3660 3663 *bigT = *pack;
3661 3664 }
3662 3665
3663 3666 /*
3664 3667 * We've verified all the old bufwads, and made new ones.
3665 3668 * Now write them out.
3666 3669 */
3667 3670 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3668 3671
3669 3672 if (freeit) {
3670 3673 if (ztest_opts.zo_verbose >= 7) {
3671 3674 (void) printf("freeing offset %llx size %llx"
3672 3675 " txg %llx\n",
3673 3676 (u_longlong_t)bigoff,
3674 3677 (u_longlong_t)bigsize,
3675 3678 (u_longlong_t)txg);
3676 3679 }
3677 3680 VERIFY(0 == dmu_free_range(os, bigobj, bigoff, bigsize, tx));
3678 3681 } else {
3679 3682 if (ztest_opts.zo_verbose >= 7) {
3680 3683 (void) printf("writing offset %llx size %llx"
3681 3684 " txg %llx\n",
3682 3685 (u_longlong_t)bigoff,
3683 3686 (u_longlong_t)bigsize,
3684 3687 (u_longlong_t)txg);
3685 3688 }
3686 3689 dmu_write(os, bigobj, bigoff, bigsize, bigbuf, tx);
3687 3690 }
3688 3691
3689 3692 dmu_tx_commit(tx);
3690 3693
3691 3694 /*
3692 3695 * Sanity check the stuff we just wrote.
3693 3696 */
3694 3697 {
3695 3698 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3696 3699 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3697 3700
3698 3701 VERIFY(0 == dmu_read(os, packobj, packoff,
3699 3702 packsize, packcheck, DMU_READ_PREFETCH));
3700 3703 VERIFY(0 == dmu_read(os, bigobj, bigoff,
3701 3704 bigsize, bigcheck, DMU_READ_PREFETCH));
3702 3705
3703 3706 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
3704 3707 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
3705 3708
3706 3709 umem_free(packcheck, packsize);
3707 3710 umem_free(bigcheck, bigsize);
3708 3711 }
3709 3712
3710 3713 umem_free(packbuf, packsize);
3711 3714 umem_free(bigbuf, bigsize);
3712 3715 }
3713 3716
3714 3717 void
3715 3718 compare_and_update_pbbufs(uint64_t s, bufwad_t *packbuf, bufwad_t *bigbuf,
3716 3719 uint64_t bigsize, uint64_t n, uint64_t chunksize, uint64_t txg)
3717 3720 {
3718 3721 uint64_t i;
3719 3722 bufwad_t *pack;
3720 3723 bufwad_t *bigH;
3721 3724 bufwad_t *bigT;
3722 3725
3723 3726 /*
3724 3727 * For each index from n to n + s, verify that the existing bufwad
3725 3728 * in packobj matches the bufwads at the head and tail of the
3726 3729 * corresponding chunk in bigobj. Then update all three bufwads
3727 3730 * with the new values we want to write out.
3728 3731 */
3729 3732 for (i = 0; i < s; i++) {
3730 3733 /* LINTED */
3731 3734 pack = (bufwad_t *)((char *)packbuf + i * sizeof (bufwad_t));
3732 3735 /* LINTED */
3733 3736 bigH = (bufwad_t *)((char *)bigbuf + i * chunksize);
3734 3737 /* LINTED */
3735 3738 bigT = (bufwad_t *)((char *)bigH + chunksize) - 1;
3736 3739
3737 3740 ASSERT((uintptr_t)bigH - (uintptr_t)bigbuf < bigsize);
3738 3741 ASSERT((uintptr_t)bigT - (uintptr_t)bigbuf < bigsize);
3739 3742
3740 3743 if (pack->bw_txg > txg)
3741 3744 fatal(0, "future leak: got %llx, open txg is %llx",
3742 3745 pack->bw_txg, txg);
3743 3746
3744 3747 if (pack->bw_data != 0 && pack->bw_index != n + i)
3745 3748 fatal(0, "wrong index: got %llx, wanted %llx+%llx",
3746 3749 pack->bw_index, n, i);
3747 3750
3748 3751 if (bcmp(pack, bigH, sizeof (bufwad_t)) != 0)
3749 3752 fatal(0, "pack/bigH mismatch in %p/%p", pack, bigH);
3750 3753
3751 3754 if (bcmp(pack, bigT, sizeof (bufwad_t)) != 0)
3752 3755 fatal(0, "pack/bigT mismatch in %p/%p", pack, bigT);
3753 3756
3754 3757 pack->bw_index = n + i;
3755 3758 pack->bw_txg = txg;
3756 3759 pack->bw_data = 1 + ztest_random(-2ULL);
3757 3760
3758 3761 *bigH = *pack;
3759 3762 *bigT = *pack;
3760 3763 }
3761 3764 }
3762 3765
3763 3766 void
3764 3767 ztest_dmu_read_write_zcopy(ztest_ds_t *zd, uint64_t id)
3765 3768 {
3766 3769 objset_t *os = zd->zd_os;
3767 3770 ztest_od_t od[2];
3768 3771 dmu_tx_t *tx;
3769 3772 uint64_t i;
3770 3773 int error;
3771 3774 uint64_t n, s, txg;
3772 3775 bufwad_t *packbuf, *bigbuf;
3773 3776 uint64_t packobj, packoff, packsize, bigobj, bigoff, bigsize;
3774 3777 uint64_t blocksize = ztest_random_blocksize();
3775 3778 uint64_t chunksize = blocksize;
3776 3779 uint64_t regions = 997;
3777 3780 uint64_t stride = 123456789ULL;
3778 3781 uint64_t width = 9;
3779 3782 dmu_buf_t *bonus_db;
3780 3783 arc_buf_t **bigbuf_arcbufs;
3781 3784 dmu_object_info_t doi;
3782 3785
3783 3786 /*
3784 3787 * This test uses two objects, packobj and bigobj, that are always
3785 3788 * updated together (i.e. in the same tx) so that their contents are
3786 3789 * in sync and can be compared. Their contents relate to each other
3787 3790 * in a simple way: packobj is a dense array of 'bufwad' structures,
3788 3791 * while bigobj is a sparse array of the same bufwads. Specifically,
3789 3792 * for any index n, there are three bufwads that should be identical:
3790 3793 *
3791 3794 * packobj, at offset n * sizeof (bufwad_t)
3792 3795 * bigobj, at the head of the nth chunk
3793 3796 * bigobj, at the tail of the nth chunk
3794 3797 *
3795 3798 * The chunk size is set equal to bigobj block size so that
3796 3799 * dmu_assign_arcbuf() can be tested for object updates.
3797 3800 */
3798 3801
3799 3802 /*
3800 3803 * Read the directory info. If it's the first time, set things up.
3801 3804 */
3802 3805 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
3803 3806 ztest_od_init(&od[1], id, FTAG, 1, DMU_OT_UINT64_OTHER, 0, chunksize);
3804 3807
3805 3808 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
3806 3809 return;
3807 3810
3808 3811 bigobj = od[0].od_object;
3809 3812 packobj = od[1].od_object;
3810 3813 blocksize = od[0].od_blocksize;
3811 3814 chunksize = blocksize;
3812 3815 ASSERT(chunksize == od[1].od_gen);
3813 3816
3814 3817 VERIFY(dmu_object_info(os, bigobj, &doi) == 0);
3815 3818 VERIFY(ISP2(doi.doi_data_block_size));
3816 3819 VERIFY(chunksize == doi.doi_data_block_size);
3817 3820 VERIFY(chunksize >= 2 * sizeof (bufwad_t));
3818 3821
3819 3822 /*
3820 3823 * Pick a random index and compute the offsets into packobj and bigobj.
3821 3824 */
3822 3825 n = ztest_random(regions) * stride + ztest_random(width);
3823 3826 s = 1 + ztest_random(width - 1);
3824 3827
3825 3828 packoff = n * sizeof (bufwad_t);
3826 3829 packsize = s * sizeof (bufwad_t);
3827 3830
3828 3831 bigoff = n * chunksize;
3829 3832 bigsize = s * chunksize;
3830 3833
3831 3834 packbuf = umem_zalloc(packsize, UMEM_NOFAIL);
3832 3835 bigbuf = umem_zalloc(bigsize, UMEM_NOFAIL);
3833 3836
3834 3837 VERIFY3U(0, ==, dmu_bonus_hold(os, bigobj, FTAG, &bonus_db));
3835 3838
3836 3839 bigbuf_arcbufs = umem_zalloc(2 * s * sizeof (arc_buf_t *), UMEM_NOFAIL);
3837 3840
3838 3841 /*
3839 3842 * Iteration 0 test zcopy for DB_UNCACHED dbufs.
3840 3843 * Iteration 1 test zcopy to already referenced dbufs.
3841 3844 * Iteration 2 test zcopy to dirty dbuf in the same txg.
3842 3845 * Iteration 3 test zcopy to dbuf dirty in previous txg.
3843 3846 * Iteration 4 test zcopy when dbuf is no longer dirty.
3844 3847 * Iteration 5 test zcopy when it can't be done.
3845 3848 * Iteration 6 one more zcopy write.
3846 3849 */
3847 3850 for (i = 0; i < 7; i++) {
3848 3851 uint64_t j;
3849 3852 uint64_t off;
3850 3853
3851 3854 /*
3852 3855 * In iteration 5 (i == 5) use arcbufs
3853 3856 * that don't match bigobj blksz to test
3854 3857 * dmu_assign_arcbuf() when it can't directly
3855 3858 * assign an arcbuf to a dbuf.
3856 3859 */
3857 3860 for (j = 0; j < s; j++) {
3858 3861 if (i != 5) {
3859 3862 bigbuf_arcbufs[j] =
3860 3863 dmu_request_arcbuf(bonus_db, chunksize);
3861 3864 } else {
3862 3865 bigbuf_arcbufs[2 * j] =
3863 3866 dmu_request_arcbuf(bonus_db, chunksize / 2);
3864 3867 bigbuf_arcbufs[2 * j + 1] =
3865 3868 dmu_request_arcbuf(bonus_db, chunksize / 2);
3866 3869 }
3867 3870 }
3868 3871
3869 3872 /*
3870 3873 * Get a tx for the mods to both packobj and bigobj.
3871 3874 */
3872 3875 tx = dmu_tx_create(os);
3873 3876
3874 3877 dmu_tx_hold_write(tx, packobj, packoff, packsize);
3875 3878 dmu_tx_hold_write(tx, bigobj, bigoff, bigsize);
3876 3879
3877 3880 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
3878 3881 if (txg == 0) {
3879 3882 umem_free(packbuf, packsize);
3880 3883 umem_free(bigbuf, bigsize);
3881 3884 for (j = 0; j < s; j++) {
3882 3885 if (i != 5) {
3883 3886 dmu_return_arcbuf(bigbuf_arcbufs[j]);
3884 3887 } else {
3885 3888 dmu_return_arcbuf(
3886 3889 bigbuf_arcbufs[2 * j]);
3887 3890 dmu_return_arcbuf(
3888 3891 bigbuf_arcbufs[2 * j + 1]);
3889 3892 }
3890 3893 }
3891 3894 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
3892 3895 dmu_buf_rele(bonus_db, FTAG);
3893 3896 return;
3894 3897 }
3895 3898
3896 3899 /*
3897 3900 * 50% of the time don't read objects in the 1st iteration to
3898 3901 * test dmu_assign_arcbuf() for the case when there're no
3899 3902 * existing dbufs for the specified offsets.
3900 3903 */
3901 3904 if (i != 0 || ztest_random(2) != 0) {
3902 3905 error = dmu_read(os, packobj, packoff,
3903 3906 packsize, packbuf, DMU_READ_PREFETCH);
3904 3907 ASSERT0(error);
3905 3908 error = dmu_read(os, bigobj, bigoff, bigsize,
3906 3909 bigbuf, DMU_READ_PREFETCH);
3907 3910 ASSERT0(error);
3908 3911 }
3909 3912 compare_and_update_pbbufs(s, packbuf, bigbuf, bigsize,
3910 3913 n, chunksize, txg);
3911 3914
3912 3915 /*
3913 3916 * We've verified all the old bufwads, and made new ones.
3914 3917 * Now write them out.
3915 3918 */
3916 3919 dmu_write(os, packobj, packoff, packsize, packbuf, tx);
3917 3920 if (ztest_opts.zo_verbose >= 7) {
3918 3921 (void) printf("writing offset %llx size %llx"
3919 3922 " txg %llx\n",
3920 3923 (u_longlong_t)bigoff,
3921 3924 (u_longlong_t)bigsize,
3922 3925 (u_longlong_t)txg);
3923 3926 }
3924 3927 for (off = bigoff, j = 0; j < s; j++, off += chunksize) {
3925 3928 dmu_buf_t *dbt;
3926 3929 if (i != 5) {
3927 3930 bcopy((caddr_t)bigbuf + (off - bigoff),
3928 3931 bigbuf_arcbufs[j]->b_data, chunksize);
3929 3932 } else {
3930 3933 bcopy((caddr_t)bigbuf + (off - bigoff),
3931 3934 bigbuf_arcbufs[2 * j]->b_data,
3932 3935 chunksize / 2);
3933 3936 bcopy((caddr_t)bigbuf + (off - bigoff) +
3934 3937 chunksize / 2,
3935 3938 bigbuf_arcbufs[2 * j + 1]->b_data,
3936 3939 chunksize / 2);
3937 3940 }
3938 3941
3939 3942 if (i == 1) {
3940 3943 VERIFY(dmu_buf_hold(os, bigobj, off,
3941 3944 FTAG, &dbt, DMU_READ_NO_PREFETCH) == 0);
3942 3945 }
3943 3946 if (i != 5) {
3944 3947 dmu_assign_arcbuf(bonus_db, off,
3945 3948 bigbuf_arcbufs[j], tx);
3946 3949 } else {
3947 3950 dmu_assign_arcbuf(bonus_db, off,
3948 3951 bigbuf_arcbufs[2 * j], tx);
3949 3952 dmu_assign_arcbuf(bonus_db,
3950 3953 off + chunksize / 2,
3951 3954 bigbuf_arcbufs[2 * j + 1], tx);
3952 3955 }
3953 3956 if (i == 1) {
3954 3957 dmu_buf_rele(dbt, FTAG);
3955 3958 }
3956 3959 }
3957 3960 dmu_tx_commit(tx);
3958 3961
3959 3962 /*
3960 3963 * Sanity check the stuff we just wrote.
3961 3964 */
3962 3965 {
3963 3966 void *packcheck = umem_alloc(packsize, UMEM_NOFAIL);
3964 3967 void *bigcheck = umem_alloc(bigsize, UMEM_NOFAIL);
3965 3968
3966 3969 VERIFY(0 == dmu_read(os, packobj, packoff,
3967 3970 packsize, packcheck, DMU_READ_PREFETCH));
3968 3971 VERIFY(0 == dmu_read(os, bigobj, bigoff,
3969 3972 bigsize, bigcheck, DMU_READ_PREFETCH));
3970 3973
3971 3974 ASSERT(bcmp(packbuf, packcheck, packsize) == 0);
3972 3975 ASSERT(bcmp(bigbuf, bigcheck, bigsize) == 0);
3973 3976
3974 3977 umem_free(packcheck, packsize);
3975 3978 umem_free(bigcheck, bigsize);
3976 3979 }
3977 3980 if (i == 2) {
3978 3981 txg_wait_open(dmu_objset_pool(os), 0);
3979 3982 } else if (i == 3) {
3980 3983 txg_wait_synced(dmu_objset_pool(os), 0);
3981 3984 }
3982 3985 }
3983 3986
3984 3987 dmu_buf_rele(bonus_db, FTAG);
3985 3988 umem_free(packbuf, packsize);
3986 3989 umem_free(bigbuf, bigsize);
3987 3990 umem_free(bigbuf_arcbufs, 2 * s * sizeof (arc_buf_t *));
3988 3991 }
3989 3992
3990 3993 /* ARGSUSED */
3991 3994 void
3992 3995 ztest_dmu_write_parallel(ztest_ds_t *zd, uint64_t id)
3993 3996 {
3994 3997 ztest_od_t od[1];
3995 3998 uint64_t offset = (1ULL << (ztest_random(20) + 43)) +
3996 3999 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
3997 4000
3998 4001 /*
3999 4002 * Have multiple threads write to large offsets in an object
4000 4003 * to verify that parallel writes to an object -- even to the
4001 4004 * same blocks within the object -- doesn't cause any trouble.
4002 4005 */
4003 4006 ztest_od_init(&od[0], ID_PARALLEL, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4004 4007
4005 4008 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4006 4009 return;
4007 4010
4008 4011 while (ztest_random(10) != 0)
4009 4012 ztest_io(zd, od[0].od_object, offset);
4010 4013 }
4011 4014
4012 4015 void
4013 4016 ztest_dmu_prealloc(ztest_ds_t *zd, uint64_t id)
4014 4017 {
4015 4018 ztest_od_t od[1];
4016 4019 uint64_t offset = (1ULL << (ztest_random(4) + SPA_MAXBLOCKSHIFT)) +
4017 4020 (ztest_random(ZTEST_RANGE_LOCKS) << SPA_MAXBLOCKSHIFT);
4018 4021 uint64_t count = ztest_random(20) + 1;
4019 4022 uint64_t blocksize = ztest_random_blocksize();
4020 4023 void *data;
4021 4024
4022 4025 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4023 4026
4024 4027 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4025 4028 return;
4026 4029
4027 4030 if (ztest_truncate(zd, od[0].od_object, offset, count * blocksize) != 0)
4028 4031 return;
4029 4032
4030 4033 ztest_prealloc(zd, od[0].od_object, offset, count * blocksize);
4031 4034
4032 4035 data = umem_zalloc(blocksize, UMEM_NOFAIL);
4033 4036
4034 4037 while (ztest_random(count) != 0) {
4035 4038 uint64_t randoff = offset + (ztest_random(count) * blocksize);
4036 4039 if (ztest_write(zd, od[0].od_object, randoff, blocksize,
4037 4040 data) != 0)
4038 4041 break;
4039 4042 while (ztest_random(4) != 0)
4040 4043 ztest_io(zd, od[0].od_object, randoff);
4041 4044 }
4042 4045
4043 4046 umem_free(data, blocksize);
4044 4047 }
4045 4048
4046 4049 /*
4047 4050 * Verify that zap_{create,destroy,add,remove,update} work as expected.
4048 4051 */
4049 4052 #define ZTEST_ZAP_MIN_INTS 1
4050 4053 #define ZTEST_ZAP_MAX_INTS 4
4051 4054 #define ZTEST_ZAP_MAX_PROPS 1000
4052 4055
4053 4056 void
4054 4057 ztest_zap(ztest_ds_t *zd, uint64_t id)
4055 4058 {
4056 4059 objset_t *os = zd->zd_os;
4057 4060 ztest_od_t od[1];
4058 4061 uint64_t object;
4059 4062 uint64_t txg, last_txg;
4060 4063 uint64_t value[ZTEST_ZAP_MAX_INTS];
4061 4064 uint64_t zl_ints, zl_intsize, prop;
4062 4065 int i, ints;
4063 4066 dmu_tx_t *tx;
4064 4067 char propname[100], txgname[100];
4065 4068 int error;
4066 4069 char *hc[2] = { "s.acl.h", ".s.open.h.hyLZlg" };
4067 4070
4068 4071 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
4069 4072
4070 4073 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4071 4074 return;
4072 4075
4073 4076 object = od[0].od_object;
4074 4077
4075 4078 /*
4076 4079 * Generate a known hash collision, and verify that
4077 4080 * we can lookup and remove both entries.
4078 4081 */
4079 4082 tx = dmu_tx_create(os);
4080 4083 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4081 4084 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4082 4085 if (txg == 0)
4083 4086 return;
4084 4087 for (i = 0; i < 2; i++) {
4085 4088 value[i] = i;
4086 4089 VERIFY3U(0, ==, zap_add(os, object, hc[i], sizeof (uint64_t),
4087 4090 1, &value[i], tx));
4088 4091 }
4089 4092 for (i = 0; i < 2; i++) {
4090 4093 VERIFY3U(EEXIST, ==, zap_add(os, object, hc[i],
4091 4094 sizeof (uint64_t), 1, &value[i], tx));
4092 4095 VERIFY3U(0, ==,
4093 4096 zap_length(os, object, hc[i], &zl_intsize, &zl_ints));
4094 4097 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4095 4098 ASSERT3U(zl_ints, ==, 1);
4096 4099 }
4097 4100 for (i = 0; i < 2; i++) {
4098 4101 VERIFY3U(0, ==, zap_remove(os, object, hc[i], tx));
4099 4102 }
4100 4103 dmu_tx_commit(tx);
4101 4104
4102 4105 /*
4103 4106 * Generate a buch of random entries.
4104 4107 */
4105 4108 ints = MAX(ZTEST_ZAP_MIN_INTS, object % ZTEST_ZAP_MAX_INTS);
4106 4109
4107 4110 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4108 4111 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4109 4112 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4110 4113 bzero(value, sizeof (value));
4111 4114 last_txg = 0;
4112 4115
4113 4116 /*
4114 4117 * If these zap entries already exist, validate their contents.
4115 4118 */
4116 4119 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4117 4120 if (error == 0) {
4118 4121 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4119 4122 ASSERT3U(zl_ints, ==, 1);
4120 4123
4121 4124 VERIFY(zap_lookup(os, object, txgname, zl_intsize,
4122 4125 zl_ints, &last_txg) == 0);
4123 4126
4124 4127 VERIFY(zap_length(os, object, propname, &zl_intsize,
4125 4128 &zl_ints) == 0);
4126 4129
4127 4130 ASSERT3U(zl_intsize, ==, sizeof (uint64_t));
4128 4131 ASSERT3U(zl_ints, ==, ints);
4129 4132
4130 4133 VERIFY(zap_lookup(os, object, propname, zl_intsize,
4131 4134 zl_ints, value) == 0);
4132 4135
4133 4136 for (i = 0; i < ints; i++) {
4134 4137 ASSERT3U(value[i], ==, last_txg + object + i);
4135 4138 }
4136 4139 } else {
4137 4140 ASSERT3U(error, ==, ENOENT);
4138 4141 }
4139 4142
4140 4143 /*
4141 4144 * Atomically update two entries in our zap object.
4142 4145 * The first is named txg_%llu, and contains the txg
4143 4146 * in which the property was last updated. The second
4144 4147 * is named prop_%llu, and the nth element of its value
4145 4148 * should be txg + object + n.
4146 4149 */
4147 4150 tx = dmu_tx_create(os);
4148 4151 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4149 4152 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4150 4153 if (txg == 0)
4151 4154 return;
4152 4155
4153 4156 if (last_txg > txg)
4154 4157 fatal(0, "zap future leak: old %llu new %llu", last_txg, txg);
4155 4158
4156 4159 for (i = 0; i < ints; i++)
4157 4160 value[i] = txg + object + i;
4158 4161
4159 4162 VERIFY3U(0, ==, zap_update(os, object, txgname, sizeof (uint64_t),
4160 4163 1, &txg, tx));
4161 4164 VERIFY3U(0, ==, zap_update(os, object, propname, sizeof (uint64_t),
4162 4165 ints, value, tx));
4163 4166
4164 4167 dmu_tx_commit(tx);
4165 4168
4166 4169 /*
4167 4170 * Remove a random pair of entries.
4168 4171 */
4169 4172 prop = ztest_random(ZTEST_ZAP_MAX_PROPS);
4170 4173 (void) sprintf(propname, "prop_%llu", (u_longlong_t)prop);
4171 4174 (void) sprintf(txgname, "txg_%llu", (u_longlong_t)prop);
4172 4175
4173 4176 error = zap_length(os, object, txgname, &zl_intsize, &zl_ints);
4174 4177
4175 4178 if (error == ENOENT)
4176 4179 return;
4177 4180
4178 4181 ASSERT0(error);
4179 4182
4180 4183 tx = dmu_tx_create(os);
4181 4184 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4182 4185 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4183 4186 if (txg == 0)
4184 4187 return;
4185 4188 VERIFY3U(0, ==, zap_remove(os, object, txgname, tx));
4186 4189 VERIFY3U(0, ==, zap_remove(os, object, propname, tx));
4187 4190 dmu_tx_commit(tx);
4188 4191 }
4189 4192
4190 4193 /*
4191 4194 * Testcase to test the upgrading of a microzap to fatzap.
4192 4195 */
4193 4196 void
4194 4197 ztest_fzap(ztest_ds_t *zd, uint64_t id)
4195 4198 {
4196 4199 objset_t *os = zd->zd_os;
4197 4200 ztest_od_t od[1];
4198 4201 uint64_t object, txg;
4199 4202
4200 4203 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_ZAP_OTHER, 0, 0);
4201 4204
4202 4205 if (ztest_object_init(zd, od, sizeof (od), !ztest_random(2)) != 0)
4203 4206 return;
4204 4207
4205 4208 object = od[0].od_object;
4206 4209
4207 4210 /*
4208 4211 * Add entries to this ZAP and make sure it spills over
4209 4212 * and gets upgraded to a fatzap. Also, since we are adding
4210 4213 * 2050 entries we should see ptrtbl growth and leaf-block split.
4211 4214 */
4212 4215 for (int i = 0; i < 2050; i++) {
4213 4216 char name[MAXNAMELEN];
4214 4217 uint64_t value = i;
4215 4218 dmu_tx_t *tx;
4216 4219 int error;
4217 4220
4218 4221 (void) snprintf(name, sizeof (name), "fzap-%llu-%llu",
4219 4222 id, value);
4220 4223
4221 4224 tx = dmu_tx_create(os);
4222 4225 dmu_tx_hold_zap(tx, object, B_TRUE, name);
4223 4226 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4224 4227 if (txg == 0)
4225 4228 return;
4226 4229 error = zap_add(os, object, name, sizeof (uint64_t), 1,
4227 4230 &value, tx);
4228 4231 ASSERT(error == 0 || error == EEXIST);
4229 4232 dmu_tx_commit(tx);
4230 4233 }
4231 4234 }
4232 4235
4233 4236 /* ARGSUSED */
4234 4237 void
4235 4238 ztest_zap_parallel(ztest_ds_t *zd, uint64_t id)
4236 4239 {
4237 4240 objset_t *os = zd->zd_os;
4238 4241 ztest_od_t od[1];
4239 4242 uint64_t txg, object, count, wsize, wc, zl_wsize, zl_wc;
4240 4243 dmu_tx_t *tx;
4241 4244 int i, namelen, error;
4242 4245 int micro = ztest_random(2);
4243 4246 char name[20], string_value[20];
4244 4247 void *data;
4245 4248
4246 4249 ztest_od_init(&od[0], ID_PARALLEL, FTAG, micro, DMU_OT_ZAP_OTHER, 0, 0);
4247 4250
4248 4251 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4249 4252 return;
4250 4253
4251 4254 object = od[0].od_object;
4252 4255
4253 4256 /*
4254 4257 * Generate a random name of the form 'xxx.....' where each
4255 4258 * x is a random printable character and the dots are dots.
4256 4259 * There are 94 such characters, and the name length goes from
4257 4260 * 6 to 20, so there are 94^3 * 15 = 12,458,760 possible names.
4258 4261 */
4259 4262 namelen = ztest_random(sizeof (name) - 5) + 5 + 1;
4260 4263
4261 4264 for (i = 0; i < 3; i++)
4262 4265 name[i] = '!' + ztest_random('~' - '!' + 1);
4263 4266 for (; i < namelen - 1; i++)
4264 4267 name[i] = '.';
4265 4268 name[i] = '\0';
4266 4269
4267 4270 if ((namelen & 1) || micro) {
4268 4271 wsize = sizeof (txg);
4269 4272 wc = 1;
4270 4273 data = &txg;
4271 4274 } else {
4272 4275 wsize = 1;
4273 4276 wc = namelen;
4274 4277 data = string_value;
4275 4278 }
4276 4279
4277 4280 count = -1ULL;
4278 4281 VERIFY0(zap_count(os, object, &count));
4279 4282 ASSERT(count != -1ULL);
4280 4283
4281 4284 /*
4282 4285 * Select an operation: length, lookup, add, update, remove.
4283 4286 */
4284 4287 i = ztest_random(5);
4285 4288
4286 4289 if (i >= 2) {
4287 4290 tx = dmu_tx_create(os);
4288 4291 dmu_tx_hold_zap(tx, object, B_TRUE, NULL);
4289 4292 txg = ztest_tx_assign(tx, TXG_MIGHTWAIT, FTAG);
4290 4293 if (txg == 0)
4291 4294 return;
4292 4295 bcopy(name, string_value, namelen);
4293 4296 } else {
4294 4297 tx = NULL;
4295 4298 txg = 0;
4296 4299 bzero(string_value, namelen);
4297 4300 }
4298 4301
4299 4302 switch (i) {
4300 4303
4301 4304 case 0:
4302 4305 error = zap_length(os, object, name, &zl_wsize, &zl_wc);
4303 4306 if (error == 0) {
4304 4307 ASSERT3U(wsize, ==, zl_wsize);
4305 4308 ASSERT3U(wc, ==, zl_wc);
4306 4309 } else {
4307 4310 ASSERT3U(error, ==, ENOENT);
4308 4311 }
4309 4312 break;
4310 4313
4311 4314 case 1:
4312 4315 error = zap_lookup(os, object, name, wsize, wc, data);
4313 4316 if (error == 0) {
4314 4317 if (data == string_value &&
4315 4318 bcmp(name, data, namelen) != 0)
4316 4319 fatal(0, "name '%s' != val '%s' len %d",
4317 4320 name, data, namelen);
4318 4321 } else {
4319 4322 ASSERT3U(error, ==, ENOENT);
4320 4323 }
4321 4324 break;
4322 4325
4323 4326 case 2:
4324 4327 error = zap_add(os, object, name, wsize, wc, data, tx);
4325 4328 ASSERT(error == 0 || error == EEXIST);
4326 4329 break;
4327 4330
4328 4331 case 3:
4329 4332 VERIFY(zap_update(os, object, name, wsize, wc, data, tx) == 0);
4330 4333 break;
4331 4334
4332 4335 case 4:
4333 4336 error = zap_remove(os, object, name, tx);
4334 4337 ASSERT(error == 0 || error == ENOENT);
4335 4338 break;
4336 4339 }
4337 4340
4338 4341 if (tx != NULL)
4339 4342 dmu_tx_commit(tx);
4340 4343 }
4341 4344
4342 4345 /*
4343 4346 * Commit callback data.
4344 4347 */
4345 4348 typedef struct ztest_cb_data {
4346 4349 list_node_t zcd_node;
4347 4350 uint64_t zcd_txg;
4348 4351 int zcd_expected_err;
4349 4352 boolean_t zcd_added;
4350 4353 boolean_t zcd_called;
4351 4354 spa_t *zcd_spa;
4352 4355 } ztest_cb_data_t;
4353 4356
4354 4357 /* This is the actual commit callback function */
4355 4358 static void
4356 4359 ztest_commit_callback(void *arg, int error)
4357 4360 {
4358 4361 ztest_cb_data_t *data = arg;
4359 4362 uint64_t synced_txg;
4360 4363
4361 4364 VERIFY(data != NULL);
4362 4365 VERIFY3S(data->zcd_expected_err, ==, error);
4363 4366 VERIFY(!data->zcd_called);
4364 4367
4365 4368 synced_txg = spa_last_synced_txg(data->zcd_spa);
4366 4369 if (data->zcd_txg > synced_txg)
4367 4370 fatal(0, "commit callback of txg %" PRIu64 " called prematurely"
4368 4371 ", last synced txg = %" PRIu64 "\n", data->zcd_txg,
4369 4372 synced_txg);
4370 4373
4371 4374 data->zcd_called = B_TRUE;
4372 4375
4373 4376 if (error == ECANCELED) {
4374 4377 ASSERT0(data->zcd_txg);
4375 4378 ASSERT(!data->zcd_added);
4376 4379
4377 4380 /*
4378 4381 * The private callback data should be destroyed here, but
4379 4382 * since we are going to check the zcd_called field after
4380 4383 * dmu_tx_abort(), we will destroy it there.
4381 4384 */
4382 4385 return;
4383 4386 }
4384 4387
4385 4388 /* Was this callback added to the global callback list? */
4386 4389 if (!data->zcd_added)
4387 4390 goto out;
4388 4391
4389 4392 ASSERT3U(data->zcd_txg, !=, 0);
4390 4393
4391 4394 /* Remove our callback from the list */
4392 4395 (void) mutex_lock(&zcl.zcl_callbacks_lock);
4393 4396 list_remove(&zcl.zcl_callbacks, data);
4394 4397 (void) mutex_unlock(&zcl.zcl_callbacks_lock);
4395 4398
4396 4399 out:
4397 4400 umem_free(data, sizeof (ztest_cb_data_t));
4398 4401 }
4399 4402
4400 4403 /* Allocate and initialize callback data structure */
4401 4404 static ztest_cb_data_t *
4402 4405 ztest_create_cb_data(objset_t *os, uint64_t txg)
4403 4406 {
4404 4407 ztest_cb_data_t *cb_data;
4405 4408
4406 4409 cb_data = umem_zalloc(sizeof (ztest_cb_data_t), UMEM_NOFAIL);
4407 4410
4408 4411 cb_data->zcd_txg = txg;
4409 4412 cb_data->zcd_spa = dmu_objset_spa(os);
4410 4413
4411 4414 return (cb_data);
4412 4415 }
4413 4416
4414 4417 /*
4415 4418 * If a number of txgs equal to this threshold have been created after a commit
4416 4419 * callback has been registered but not called, then we assume there is an
4417 4420 * implementation bug.
4418 4421 */
4419 4422 #define ZTEST_COMMIT_CALLBACK_THRESH (TXG_CONCURRENT_STATES + 2)
4420 4423
4421 4424 /*
4422 4425 * Commit callback test.
4423 4426 */
4424 4427 void
4425 4428 ztest_dmu_commit_callbacks(ztest_ds_t *zd, uint64_t id)
4426 4429 {
4427 4430 objset_t *os = zd->zd_os;
4428 4431 ztest_od_t od[1];
4429 4432 dmu_tx_t *tx;
4430 4433 ztest_cb_data_t *cb_data[3], *tmp_cb;
4431 4434 uint64_t old_txg, txg;
4432 4435 int i, error;
4433 4436
4434 4437 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, 0, 0);
4435 4438
4436 4439 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4437 4440 return;
4438 4441
4439 4442 tx = dmu_tx_create(os);
4440 4443
4441 4444 cb_data[0] = ztest_create_cb_data(os, 0);
4442 4445 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[0]);
4443 4446
4444 4447 dmu_tx_hold_write(tx, od[0].od_object, 0, sizeof (uint64_t));
4445 4448
4446 4449 /* Every once in a while, abort the transaction on purpose */
4447 4450 if (ztest_random(100) == 0)
4448 4451 error = -1;
4449 4452
4450 4453 if (!error)
4451 4454 error = dmu_tx_assign(tx, TXG_NOWAIT);
4452 4455
4453 4456 txg = error ? 0 : dmu_tx_get_txg(tx);
4454 4457
4455 4458 cb_data[0]->zcd_txg = txg;
4456 4459 cb_data[1] = ztest_create_cb_data(os, txg);
4457 4460 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[1]);
4458 4461
4459 4462 if (error) {
4460 4463 /*
4461 4464 * It's not a strict requirement to call the registered
4462 4465 * callbacks from inside dmu_tx_abort(), but that's what
4463 4466 * it's supposed to happen in the current implementation
4464 4467 * so we will check for that.
4465 4468 */
4466 4469 for (i = 0; i < 2; i++) {
4467 4470 cb_data[i]->zcd_expected_err = ECANCELED;
4468 4471 VERIFY(!cb_data[i]->zcd_called);
4469 4472 }
4470 4473
4471 4474 dmu_tx_abort(tx);
4472 4475
4473 4476 for (i = 0; i < 2; i++) {
4474 4477 VERIFY(cb_data[i]->zcd_called);
4475 4478 umem_free(cb_data[i], sizeof (ztest_cb_data_t));
4476 4479 }
4477 4480
4478 4481 return;
4479 4482 }
4480 4483
4481 4484 cb_data[2] = ztest_create_cb_data(os, txg);
4482 4485 dmu_tx_callback_register(tx, ztest_commit_callback, cb_data[2]);
4483 4486
4484 4487 /*
4485 4488 * Read existing data to make sure there isn't a future leak.
4486 4489 */
4487 4490 VERIFY(0 == dmu_read(os, od[0].od_object, 0, sizeof (uint64_t),
4488 4491 &old_txg, DMU_READ_PREFETCH));
4489 4492
4490 4493 if (old_txg > txg)
4491 4494 fatal(0, "future leak: got %" PRIu64 ", open txg is %" PRIu64,
4492 4495 old_txg, txg);
4493 4496
4494 4497 dmu_write(os, od[0].od_object, 0, sizeof (uint64_t), &txg, tx);
4495 4498
4496 4499 (void) mutex_lock(&zcl.zcl_callbacks_lock);
4497 4500
4498 4501 /*
4499 4502 * Since commit callbacks don't have any ordering requirement and since
4500 4503 * it is theoretically possible for a commit callback to be called
4501 4504 * after an arbitrary amount of time has elapsed since its txg has been
4502 4505 * synced, it is difficult to reliably determine whether a commit
4503 4506 * callback hasn't been called due to high load or due to a flawed
4504 4507 * implementation.
4505 4508 *
4506 4509 * In practice, we will assume that if after a certain number of txgs a
4507 4510 * commit callback hasn't been called, then most likely there's an
4508 4511 * implementation bug..
4509 4512 */
4510 4513 tmp_cb = list_head(&zcl.zcl_callbacks);
4511 4514 if (tmp_cb != NULL &&
4512 4515 (txg - ZTEST_COMMIT_CALLBACK_THRESH) > tmp_cb->zcd_txg) {
4513 4516 fatal(0, "Commit callback threshold exceeded, oldest txg: %"
4514 4517 PRIu64 ", open txg: %" PRIu64 "\n", tmp_cb->zcd_txg, txg);
4515 4518 }
4516 4519
4517 4520 /*
4518 4521 * Let's find the place to insert our callbacks.
4519 4522 *
4520 4523 * Even though the list is ordered by txg, it is possible for the
4521 4524 * insertion point to not be the end because our txg may already be
4522 4525 * quiescing at this point and other callbacks in the open txg
4523 4526 * (from other objsets) may have sneaked in.
4524 4527 */
4525 4528 tmp_cb = list_tail(&zcl.zcl_callbacks);
4526 4529 while (tmp_cb != NULL && tmp_cb->zcd_txg > txg)
4527 4530 tmp_cb = list_prev(&zcl.zcl_callbacks, tmp_cb);
4528 4531
4529 4532 /* Add the 3 callbacks to the list */
4530 4533 for (i = 0; i < 3; i++) {
4531 4534 if (tmp_cb == NULL)
4532 4535 list_insert_head(&zcl.zcl_callbacks, cb_data[i]);
4533 4536 else
4534 4537 list_insert_after(&zcl.zcl_callbacks, tmp_cb,
4535 4538 cb_data[i]);
4536 4539
4537 4540 cb_data[i]->zcd_added = B_TRUE;
4538 4541 VERIFY(!cb_data[i]->zcd_called);
4539 4542
4540 4543 tmp_cb = cb_data[i];
4541 4544 }
4542 4545
4543 4546 (void) mutex_unlock(&zcl.zcl_callbacks_lock);
4544 4547
4545 4548 dmu_tx_commit(tx);
4546 4549 }
4547 4550
4548 4551 /* ARGSUSED */
4549 4552 void
4550 4553 ztest_dsl_prop_get_set(ztest_ds_t *zd, uint64_t id)
4551 4554 {
4552 4555 zfs_prop_t proplist[] = {
4553 4556 ZFS_PROP_CHECKSUM,
4554 4557 ZFS_PROP_COMPRESSION,
4555 4558 ZFS_PROP_COPIES,
4556 4559 ZFS_PROP_DEDUP
4557 4560 };
4558 4561
4559 4562 (void) rw_rdlock(&ztest_name_lock);
4560 4563
4561 4564 for (int p = 0; p < sizeof (proplist) / sizeof (proplist[0]); p++)
4562 4565 (void) ztest_dsl_prop_set_uint64(zd->zd_name, proplist[p],
4563 4566 ztest_random_dsl_prop(proplist[p]), (int)ztest_random(2));
4564 4567
4565 4568 (void) rw_unlock(&ztest_name_lock);
4566 4569 }
4567 4570
4568 4571 /* ARGSUSED */
4569 4572 void
4570 4573 ztest_spa_prop_get_set(ztest_ds_t *zd, uint64_t id)
4571 4574 {
4572 4575 nvlist_t *props = NULL;
4573 4576
4574 4577 (void) rw_rdlock(&ztest_name_lock);
4575 4578
4576 4579 (void) ztest_spa_prop_set_uint64(ZPOOL_PROP_DEDUPDITTO,
4577 4580 ZIO_DEDUPDITTO_MIN + ztest_random(ZIO_DEDUPDITTO_MIN));
4578 4581
4579 4582 VERIFY0(spa_prop_get(ztest_spa, &props));
4580 4583
4581 4584 if (ztest_opts.zo_verbose >= 6)
4582 4585 dump_nvlist(props, 4);
4583 4586
4584 4587 nvlist_free(props);
4585 4588
4586 4589 (void) rw_unlock(&ztest_name_lock);
4587 4590 }
4588 4591
4589 4592 static int
4590 4593 user_release_one(const char *snapname, const char *holdname)
4591 4594 {
4592 4595 nvlist_t *snaps, *holds;
4593 4596 int error;
4594 4597
4595 4598 snaps = fnvlist_alloc();
4596 4599 holds = fnvlist_alloc();
4597 4600 fnvlist_add_boolean(holds, holdname);
4598 4601 fnvlist_add_nvlist(snaps, snapname, holds);
4599 4602 fnvlist_free(holds);
4600 4603 error = dsl_dataset_user_release(snaps, NULL);
4601 4604 fnvlist_free(snaps);
4602 4605 return (error);
4603 4606 }
4604 4607
4605 4608 /*
4606 4609 * Test snapshot hold/release and deferred destroy.
4607 4610 */
4608 4611 void
4609 4612 ztest_dmu_snapshot_hold(ztest_ds_t *zd, uint64_t id)
4610 4613 {
4611 4614 int error;
4612 4615 objset_t *os = zd->zd_os;
4613 4616 objset_t *origin;
4614 4617 char snapname[100];
4615 4618 char fullname[100];
4616 4619 char clonename[100];
4617 4620 char tag[100];
4618 4621 char osname[MAXNAMELEN];
4619 4622 nvlist_t *holds;
4620 4623
4621 4624 (void) rw_rdlock(&ztest_name_lock);
4622 4625
4623 4626 dmu_objset_name(os, osname);
4624 4627
4625 4628 (void) snprintf(snapname, sizeof (snapname), "sh1_%llu", id);
4626 4629 (void) snprintf(fullname, sizeof (fullname), "%s@%s", osname, snapname);
4627 4630 (void) snprintf(clonename, sizeof (clonename),
4628 4631 "%s/ch1_%llu", osname, id);
4629 4632 (void) snprintf(tag, sizeof (tag), "tag_%llu", id);
4630 4633
4631 4634 /*
4632 4635 * Clean up from any previous run.
4633 4636 */
4634 4637 error = dsl_destroy_head(clonename);
4635 4638 if (error != ENOENT)
4636 4639 ASSERT0(error);
4637 4640 error = user_release_one(fullname, tag);
4638 4641 if (error != ESRCH && error != ENOENT)
4639 4642 ASSERT0(error);
4640 4643 error = dsl_destroy_snapshot(fullname, B_FALSE);
4641 4644 if (error != ENOENT)
4642 4645 ASSERT0(error);
4643 4646
4644 4647 /*
4645 4648 * Create snapshot, clone it, mark snap for deferred destroy,
4646 4649 * destroy clone, verify snap was also destroyed.
4647 4650 */
4648 4651 error = dmu_objset_snapshot_one(osname, snapname);
4649 4652 if (error) {
4650 4653 if (error == ENOSPC) {
4651 4654 ztest_record_enospc("dmu_objset_snapshot");
4652 4655 goto out;
4653 4656 }
4654 4657 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
4655 4658 }
4656 4659
4657 4660 error = dmu_objset_clone(clonename, fullname);
4658 4661 if (error) {
4659 4662 if (error == ENOSPC) {
4660 4663 ztest_record_enospc("dmu_objset_clone");
4661 4664 goto out;
4662 4665 }
4663 4666 fatal(0, "dmu_objset_clone(%s) = %d", clonename, error);
4664 4667 }
4665 4668
4666 4669 error = dsl_destroy_snapshot(fullname, B_TRUE);
4667 4670 if (error) {
4668 4671 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
4669 4672 fullname, error);
4670 4673 }
4671 4674
4672 4675 error = dsl_destroy_head(clonename);
4673 4676 if (error)
4674 4677 fatal(0, "dsl_destroy_head(%s) = %d", clonename, error);
4675 4678
4676 4679 error = dmu_objset_hold(fullname, FTAG, &origin);
4677 4680 if (error != ENOENT)
4678 4681 fatal(0, "dmu_objset_hold(%s) = %d", fullname, error);
4679 4682
4680 4683 /*
4681 4684 * Create snapshot, add temporary hold, verify that we can't
4682 4685 * destroy a held snapshot, mark for deferred destroy,
4683 4686 * release hold, verify snapshot was destroyed.
4684 4687 */
4685 4688 error = dmu_objset_snapshot_one(osname, snapname);
4686 4689 if (error) {
4687 4690 if (error == ENOSPC) {
4688 4691 ztest_record_enospc("dmu_objset_snapshot");
4689 4692 goto out;
4690 4693 }
4691 4694 fatal(0, "dmu_objset_snapshot(%s) = %d", fullname, error);
4692 4695 }
4693 4696
4694 4697 holds = fnvlist_alloc();
4695 4698 fnvlist_add_string(holds, fullname, tag);
4696 4699 error = dsl_dataset_user_hold(holds, 0, NULL);
4697 4700 fnvlist_free(holds);
4698 4701
4699 4702 if (error)
4700 4703 fatal(0, "dsl_dataset_user_hold(%s)", fullname, tag);
4701 4704
4702 4705 error = dsl_destroy_snapshot(fullname, B_FALSE);
4703 4706 if (error != EBUSY) {
4704 4707 fatal(0, "dsl_destroy_snapshot(%s, B_FALSE) = %d",
4705 4708 fullname, error);
4706 4709 }
4707 4710
4708 4711 error = dsl_destroy_snapshot(fullname, B_TRUE);
4709 4712 if (error) {
4710 4713 fatal(0, "dsl_destroy_snapshot(%s, B_TRUE) = %d",
4711 4714 fullname, error);
4712 4715 }
4713 4716
4714 4717 error = user_release_one(fullname, tag);
4715 4718 if (error)
4716 4719 fatal(0, "user_release_one(%s, %s) = %d", fullname, tag, error);
4717 4720
4718 4721 VERIFY3U(dmu_objset_hold(fullname, FTAG, &origin), ==, ENOENT);
4719 4722
4720 4723 out:
4721 4724 (void) rw_unlock(&ztest_name_lock);
4722 4725 }
4723 4726
4724 4727 /*
4725 4728 * Inject random faults into the on-disk data.
4726 4729 */
4727 4730 /* ARGSUSED */
4728 4731 void
4729 4732 ztest_fault_inject(ztest_ds_t *zd, uint64_t id)
4730 4733 {
4731 4734 ztest_shared_t *zs = ztest_shared;
4732 4735 spa_t *spa = ztest_spa;
4733 4736 int fd;
4734 4737 uint64_t offset;
4735 4738 uint64_t leaves;
4736 4739 uint64_t bad = 0x1990c0ffeedecade;
4737 4740 uint64_t top, leaf;
4738 4741 char path0[MAXPATHLEN];
4739 4742 char pathrand[MAXPATHLEN];
4740 4743 size_t fsize;
4741 4744 int bshift = SPA_MAXBLOCKSHIFT + 2; /* don't scrog all labels */
4742 4745 int iters = 1000;
4743 4746 int maxfaults;
4744 4747 int mirror_save;
4745 4748 vdev_t *vd0 = NULL;
4746 4749 uint64_t guid0 = 0;
4747 4750 boolean_t islog = B_FALSE;
4748 4751
4749 4752 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4750 4753 maxfaults = MAXFAULTS();
4751 4754 leaves = MAX(zs->zs_mirrors, 1) * ztest_opts.zo_raidz;
4752 4755 mirror_save = zs->zs_mirrors;
4753 4756 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4754 4757
4755 4758 ASSERT(leaves >= 1);
4756 4759
4757 4760 /*
4758 4761 * Grab the name lock as reader. There are some operations
4759 4762 * which don't like to have their vdevs changed while
4760 4763 * they are in progress (i.e. spa_change_guid). Those
4761 4764 * operations will have grabbed the name lock as writer.
4762 4765 */
4763 4766 (void) rw_rdlock(&ztest_name_lock);
4764 4767
4765 4768 /*
4766 4769 * We need SCL_STATE here because we're going to look at vd0->vdev_tsd.
4767 4770 */
4768 4771 spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
4769 4772
4770 4773 if (ztest_random(2) == 0) {
4771 4774 /*
4772 4775 * Inject errors on a normal data device or slog device.
4773 4776 */
4774 4777 top = ztest_random_vdev_top(spa, B_TRUE);
4775 4778 leaf = ztest_random(leaves) + zs->zs_splits;
4776 4779
4777 4780 /*
4778 4781 * Generate paths to the first leaf in this top-level vdev,
4779 4782 * and to the random leaf we selected. We'll induce transient
4780 4783 * write failures and random online/offline activity on leaf 0,
4781 4784 * and we'll write random garbage to the randomly chosen leaf.
4782 4785 */
4783 4786 (void) snprintf(path0, sizeof (path0), ztest_dev_template,
4784 4787 ztest_opts.zo_dir, ztest_opts.zo_pool,
4785 4788 top * leaves + zs->zs_splits);
4786 4789 (void) snprintf(pathrand, sizeof (pathrand), ztest_dev_template,
4787 4790 ztest_opts.zo_dir, ztest_opts.zo_pool,
4788 4791 top * leaves + leaf);
4789 4792
4790 4793 vd0 = vdev_lookup_by_path(spa->spa_root_vdev, path0);
4791 4794 if (vd0 != NULL && vd0->vdev_top->vdev_islog)
4792 4795 islog = B_TRUE;
4793 4796
4794 4797 /*
4795 4798 * If the top-level vdev needs to be resilvered
4796 4799 * then we only allow faults on the device that is
4797 4800 * resilvering.
4798 4801 */
4799 4802 if (vd0 != NULL && maxfaults != 1 &&
4800 4803 (!vdev_resilver_needed(vd0->vdev_top, NULL, NULL) ||
4801 4804 vd0->vdev_resilvering)) {
4802 4805 /*
4803 4806 * Make vd0 explicitly claim to be unreadable,
4804 4807 * or unwriteable, or reach behind its back
4805 4808 * and close the underlying fd. We can do this if
4806 4809 * maxfaults == 0 because we'll fail and reexecute,
4807 4810 * and we can do it if maxfaults >= 2 because we'll
4808 4811 * have enough redundancy. If maxfaults == 1, the
4809 4812 * combination of this with injection of random data
4810 4813 * corruption below exceeds the pool's fault tolerance.
4811 4814 */
4812 4815 vdev_file_t *vf = vd0->vdev_tsd;
4813 4816
4814 4817 if (vf != NULL && ztest_random(3) == 0) {
4815 4818 (void) close(vf->vf_vnode->v_fd);
4816 4819 vf->vf_vnode->v_fd = -1;
4817 4820 } else if (ztest_random(2) == 0) {
4818 4821 vd0->vdev_cant_read = B_TRUE;
4819 4822 } else {
4820 4823 vd0->vdev_cant_write = B_TRUE;
4821 4824 }
4822 4825 guid0 = vd0->vdev_guid;
4823 4826 }
4824 4827 } else {
4825 4828 /*
4826 4829 * Inject errors on an l2cache device.
4827 4830 */
4828 4831 spa_aux_vdev_t *sav = &spa->spa_l2cache;
4829 4832
4830 4833 if (sav->sav_count == 0) {
4831 4834 spa_config_exit(spa, SCL_STATE, FTAG);
4832 4835 (void) rw_unlock(&ztest_name_lock);
4833 4836 return;
4834 4837 }
4835 4838 vd0 = sav->sav_vdevs[ztest_random(sav->sav_count)];
4836 4839 guid0 = vd0->vdev_guid;
4837 4840 (void) strcpy(path0, vd0->vdev_path);
4838 4841 (void) strcpy(pathrand, vd0->vdev_path);
4839 4842
4840 4843 leaf = 0;
4841 4844 leaves = 1;
4842 4845 maxfaults = INT_MAX; /* no limit on cache devices */
4843 4846 }
4844 4847
4845 4848 spa_config_exit(spa, SCL_STATE, FTAG);
4846 4849 (void) rw_unlock(&ztest_name_lock);
4847 4850
4848 4851 /*
4849 4852 * If we can tolerate two or more faults, or we're dealing
4850 4853 * with a slog, randomly online/offline vd0.
4851 4854 */
4852 4855 if ((maxfaults >= 2 || islog) && guid0 != 0) {
4853 4856 if (ztest_random(10) < 6) {
4854 4857 int flags = (ztest_random(2) == 0 ?
4855 4858 ZFS_OFFLINE_TEMPORARY : 0);
4856 4859
4857 4860 /*
4858 4861 * We have to grab the zs_name_lock as writer to
4859 4862 * prevent a race between offlining a slog and
4860 4863 * destroying a dataset. Offlining the slog will
4861 4864 * grab a reference on the dataset which may cause
4862 4865 * dmu_objset_destroy() to fail with EBUSY thus
4863 4866 * leaving the dataset in an inconsistent state.
4864 4867 */
4865 4868 if (islog)
4866 4869 (void) rw_wrlock(&ztest_name_lock);
4867 4870
4868 4871 VERIFY(vdev_offline(spa, guid0, flags) != EBUSY);
4869 4872
4870 4873 if (islog)
4871 4874 (void) rw_unlock(&ztest_name_lock);
4872 4875 } else {
4873 4876 /*
4874 4877 * Ideally we would like to be able to randomly
4875 4878 * call vdev_[on|off]line without holding locks
4876 4879 * to force unpredictable failures but the side
4877 4880 * effects of vdev_[on|off]line prevent us from
4878 4881 * doing so. We grab the ztest_vdev_lock here to
4879 4882 * prevent a race between injection testing and
4880 4883 * aux_vdev removal.
4881 4884 */
4882 4885 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4883 4886 (void) vdev_online(spa, guid0, 0, NULL);
4884 4887 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4885 4888 }
4886 4889 }
4887 4890
4888 4891 if (maxfaults == 0)
4889 4892 return;
4890 4893
4891 4894 /*
4892 4895 * We have at least single-fault tolerance, so inject data corruption.
4893 4896 */
4894 4897 fd = open(pathrand, O_RDWR);
4895 4898
4896 4899 if (fd == -1) /* we hit a gap in the device namespace */
4897 4900 return;
4898 4901
4899 4902 fsize = lseek(fd, 0, SEEK_END);
4900 4903
4901 4904 while (--iters != 0) {
4902 4905 offset = ztest_random(fsize / (leaves << bshift)) *
4903 4906 (leaves << bshift) + (leaf << bshift) +
4904 4907 (ztest_random(1ULL << (bshift - 1)) & -8ULL);
4905 4908
4906 4909 if (offset >= fsize)
4907 4910 continue;
4908 4911
4909 4912 VERIFY(mutex_lock(&ztest_vdev_lock) == 0);
4910 4913 if (mirror_save != zs->zs_mirrors) {
4911 4914 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4912 4915 (void) close(fd);
4913 4916 return;
4914 4917 }
4915 4918
4916 4919 if (pwrite(fd, &bad, sizeof (bad), offset) != sizeof (bad))
4917 4920 fatal(1, "can't inject bad word at 0x%llx in %s",
4918 4921 offset, pathrand);
4919 4922
4920 4923 VERIFY(mutex_unlock(&ztest_vdev_lock) == 0);
4921 4924
4922 4925 if (ztest_opts.zo_verbose >= 7)
4923 4926 (void) printf("injected bad word into %s,"
4924 4927 " offset 0x%llx\n", pathrand, (u_longlong_t)offset);
4925 4928 }
4926 4929
4927 4930 (void) close(fd);
4928 4931 }
4929 4932
4930 4933 /*
4931 4934 * Verify that DDT repair works as expected.
4932 4935 */
4933 4936 void
4934 4937 ztest_ddt_repair(ztest_ds_t *zd, uint64_t id)
4935 4938 {
4936 4939 ztest_shared_t *zs = ztest_shared;
4937 4940 spa_t *spa = ztest_spa;
4938 4941 objset_t *os = zd->zd_os;
4939 4942 ztest_od_t od[1];
4940 4943 uint64_t object, blocksize, txg, pattern, psize;
4941 4944 enum zio_checksum checksum = spa_dedup_checksum(spa);
4942 4945 dmu_buf_t *db;
4943 4946 dmu_tx_t *tx;
4944 4947 void *buf;
4945 4948 blkptr_t blk;
4946 4949 int copies = 2 * ZIO_DEDUPDITTO_MIN;
4947 4950
4948 4951 blocksize = ztest_random_blocksize();
4949 4952 blocksize = MIN(blocksize, 2048); /* because we write so many */
4950 4953
4951 4954 ztest_od_init(&od[0], id, FTAG, 0, DMU_OT_UINT64_OTHER, blocksize, 0);
4952 4955
4953 4956 if (ztest_object_init(zd, od, sizeof (od), B_FALSE) != 0)
4954 4957 return;
4955 4958
4956 4959 /*
4957 4960 * Take the name lock as writer to prevent anyone else from changing
4958 4961 * the pool and dataset properies we need to maintain during this test.
4959 4962 */
4960 4963 (void) rw_wrlock(&ztest_name_lock);
4961 4964
4962 4965 if (ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_DEDUP, checksum,
4963 4966 B_FALSE) != 0 ||
4964 4967 ztest_dsl_prop_set_uint64(zd->zd_name, ZFS_PROP_COPIES, 1,
4965 4968 B_FALSE) != 0) {
4966 4969 (void) rw_unlock(&ztest_name_lock);
4967 4970 return;
4968 4971 }
4969 4972
4970 4973 object = od[0].od_object;
4971 4974 blocksize = od[0].od_blocksize;
4972 4975 pattern = zs->zs_guid ^ dmu_objset_fsid_guid(os);
4973 4976
4974 4977 ASSERT(object != 0);
4975 4978
4976 4979 tx = dmu_tx_create(os);
4977 4980 dmu_tx_hold_write(tx, object, 0, copies * blocksize);
4978 4981 txg = ztest_tx_assign(tx, TXG_WAIT, FTAG);
4979 4982 if (txg == 0) {
4980 4983 (void) rw_unlock(&ztest_name_lock);
4981 4984 return;
4982 4985 }
4983 4986
4984 4987 /*
4985 4988 * Write all the copies of our block.
4986 4989 */
4987 4990 for (int i = 0; i < copies; i++) {
4988 4991 uint64_t offset = i * blocksize;
4989 4992 int error = dmu_buf_hold(os, object, offset, FTAG, &db,
4990 4993 DMU_READ_NO_PREFETCH);
4991 4994 if (error != 0) {
4992 4995 fatal(B_FALSE, "dmu_buf_hold(%p, %llu, %llu) = %u",
4993 4996 os, (long long)object, (long long) offset, error);
4994 4997 }
4995 4998 ASSERT(db->db_offset == offset);
4996 4999 ASSERT(db->db_size == blocksize);
4997 5000 ASSERT(ztest_pattern_match(db->db_data, db->db_size, pattern) ||
4998 5001 ztest_pattern_match(db->db_data, db->db_size, 0ULL));
4999 5002 dmu_buf_will_fill(db, tx);
5000 5003 ztest_pattern_set(db->db_data, db->db_size, pattern);
5001 5004 dmu_buf_rele(db, FTAG);
5002 5005 }
5003 5006
5004 5007 dmu_tx_commit(tx);
5005 5008 txg_wait_synced(spa_get_dsl(spa), txg);
5006 5009
5007 5010 /*
5008 5011 * Find out what block we got.
5009 5012 */
5010 5013 VERIFY0(dmu_buf_hold(os, object, 0, FTAG, &db,
5011 5014 DMU_READ_NO_PREFETCH));
5012 5015 blk = *((dmu_buf_impl_t *)db)->db_blkptr;
5013 5016 dmu_buf_rele(db, FTAG);
5014 5017
5015 5018 /*
5016 5019 * Damage the block. Dedup-ditto will save us when we read it later.
5017 5020 */
5018 5021 psize = BP_GET_PSIZE(&blk);
5019 5022 buf = zio_buf_alloc(psize);
5020 5023 ztest_pattern_set(buf, psize, ~pattern);
5021 5024
5022 5025 (void) zio_wait(zio_rewrite(NULL, spa, 0, &blk,
5023 5026 buf, psize, NULL, NULL, ZIO_PRIORITY_SYNC_WRITE,
5024 5027 ZIO_FLAG_CANFAIL | ZIO_FLAG_INDUCE_DAMAGE, NULL));
5025 5028
5026 5029 zio_buf_free(buf, psize);
5027 5030
5028 5031 (void) rw_unlock(&ztest_name_lock);
5029 5032 }
5030 5033
5031 5034 /*
5032 5035 * Scrub the pool.
5033 5036 */
5034 5037 /* ARGSUSED */
5035 5038 void
5036 5039 ztest_scrub(ztest_ds_t *zd, uint64_t id)
5037 5040 {
5038 5041 spa_t *spa = ztest_spa;
5039 5042
5040 5043 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5041 5044 (void) poll(NULL, 0, 100); /* wait a moment, then force a restart */
5042 5045 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5043 5046 }
5044 5047
5045 5048 /*
5046 5049 * Change the guid for the pool.
5047 5050 */
5048 5051 /* ARGSUSED */
5049 5052 void
5050 5053 ztest_reguid(ztest_ds_t *zd, uint64_t id)
5051 5054 {
5052 5055 spa_t *spa = ztest_spa;
5053 5056 uint64_t orig, load;
5054 5057 int error;
5055 5058
5056 5059 orig = spa_guid(spa);
5057 5060 load = spa_load_guid(spa);
5058 5061
5059 5062 (void) rw_wrlock(&ztest_name_lock);
5060 5063 error = spa_change_guid(spa);
5061 5064 (void) rw_unlock(&ztest_name_lock);
5062 5065
5063 5066 if (error != 0)
5064 5067 return;
5065 5068
5066 5069 if (ztest_opts.zo_verbose >= 4) {
5067 5070 (void) printf("Changed guid old %llu -> %llu\n",
5068 5071 (u_longlong_t)orig, (u_longlong_t)spa_guid(spa));
5069 5072 }
5070 5073
5071 5074 VERIFY3U(orig, !=, spa_guid(spa));
5072 5075 VERIFY3U(load, ==, spa_load_guid(spa));
5073 5076 }
5074 5077
5075 5078 /*
5076 5079 * Rename the pool to a different name and then rename it back.
5077 5080 */
5078 5081 /* ARGSUSED */
5079 5082 void
5080 5083 ztest_spa_rename(ztest_ds_t *zd, uint64_t id)
5081 5084 {
5082 5085 char *oldname, *newname;
5083 5086 spa_t *spa;
5084 5087
5085 5088 (void) rw_wrlock(&ztest_name_lock);
5086 5089
5087 5090 oldname = ztest_opts.zo_pool;
5088 5091 newname = umem_alloc(strlen(oldname) + 5, UMEM_NOFAIL);
5089 5092 (void) strcpy(newname, oldname);
5090 5093 (void) strcat(newname, "_tmp");
5091 5094
5092 5095 /*
5093 5096 * Do the rename
5094 5097 */
5095 5098 VERIFY3U(0, ==, spa_rename(oldname, newname));
5096 5099
5097 5100 /*
5098 5101 * Try to open it under the old name, which shouldn't exist
5099 5102 */
5100 5103 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5101 5104
5102 5105 /*
5103 5106 * Open it under the new name and make sure it's still the same spa_t.
5104 5107 */
5105 5108 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5106 5109
5107 5110 ASSERT(spa == ztest_spa);
5108 5111 spa_close(spa, FTAG);
5109 5112
5110 5113 /*
5111 5114 * Rename it back to the original
5112 5115 */
5113 5116 VERIFY3U(0, ==, spa_rename(newname, oldname));
5114 5117
5115 5118 /*
5116 5119 * Make sure it can still be opened
5117 5120 */
5118 5121 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5119 5122
5120 5123 ASSERT(spa == ztest_spa);
5121 5124 spa_close(spa, FTAG);
5122 5125
5123 5126 umem_free(newname, strlen(newname) + 1);
5124 5127
5125 5128 (void) rw_unlock(&ztest_name_lock);
5126 5129 }
5127 5130
5128 5131 /*
5129 5132 * Verify pool integrity by running zdb.
5130 5133 */
5131 5134 static void
5132 5135 ztest_run_zdb(char *pool)
5133 5136 {
5134 5137 int status;
5135 5138 char zdb[MAXPATHLEN + MAXNAMELEN + 20];
5136 5139 char zbuf[1024];
5137 5140 char *bin;
5138 5141 char *ztest;
5139 5142 char *isa;
5140 5143 int isalen;
5141 5144 FILE *fp;
5142 5145
5143 5146 (void) realpath(getexecname(), zdb);
5144 5147
5145 5148 /* zdb lives in /usr/sbin, while ztest lives in /usr/bin */
5146 5149 bin = strstr(zdb, "/usr/bin/");
5147 5150 ztest = strstr(bin, "/ztest");
5148 5151 isa = bin + 8;
5149 5152 isalen = ztest - isa;
5150 5153 isa = strdup(isa);
5151 5154 /* LINTED */
5152 5155 (void) sprintf(bin,
5153 5156 "/usr/sbin%.*s/zdb -bcc%s%s -U %s %s",
5154 5157 isalen,
5155 5158 isa,
5156 5159 ztest_opts.zo_verbose >= 3 ? "s" : "",
5157 5160 ztest_opts.zo_verbose >= 4 ? "v" : "",
5158 5161 spa_config_path,
5159 5162 pool);
5160 5163 free(isa);
5161 5164
5162 5165 if (ztest_opts.zo_verbose >= 5)
5163 5166 (void) printf("Executing %s\n", strstr(zdb, "zdb "));
5164 5167
5165 5168 fp = popen(zdb, "r");
5166 5169
5167 5170 while (fgets(zbuf, sizeof (zbuf), fp) != NULL)
5168 5171 if (ztest_opts.zo_verbose >= 3)
5169 5172 (void) printf("%s", zbuf);
5170 5173
5171 5174 status = pclose(fp);
5172 5175
5173 5176 if (status == 0)
5174 5177 return;
5175 5178
5176 5179 ztest_dump_core = 0;
5177 5180 if (WIFEXITED(status))
5178 5181 fatal(0, "'%s' exit code %d", zdb, WEXITSTATUS(status));
5179 5182 else
5180 5183 fatal(0, "'%s' died with signal %d", zdb, WTERMSIG(status));
5181 5184 }
5182 5185
5183 5186 static void
5184 5187 ztest_walk_pool_directory(char *header)
5185 5188 {
5186 5189 spa_t *spa = NULL;
5187 5190
5188 5191 if (ztest_opts.zo_verbose >= 6)
5189 5192 (void) printf("%s\n", header);
5190 5193
5191 5194 mutex_enter(&spa_namespace_lock);
5192 5195 while ((spa = spa_next(spa)) != NULL)
5193 5196 if (ztest_opts.zo_verbose >= 6)
5194 5197 (void) printf("\t%s\n", spa_name(spa));
5195 5198 mutex_exit(&spa_namespace_lock);
5196 5199 }
5197 5200
5198 5201 static void
5199 5202 ztest_spa_import_export(char *oldname, char *newname)
5200 5203 {
5201 5204 nvlist_t *config, *newconfig;
5202 5205 uint64_t pool_guid;
5203 5206 spa_t *spa;
5204 5207 int error;
5205 5208
5206 5209 if (ztest_opts.zo_verbose >= 4) {
5207 5210 (void) printf("import/export: old = %s, new = %s\n",
5208 5211 oldname, newname);
5209 5212 }
5210 5213
5211 5214 /*
5212 5215 * Clean up from previous runs.
5213 5216 */
5214 5217 (void) spa_destroy(newname);
5215 5218
5216 5219 /*
5217 5220 * Get the pool's configuration and guid.
5218 5221 */
5219 5222 VERIFY3U(0, ==, spa_open(oldname, &spa, FTAG));
5220 5223
5221 5224 /*
5222 5225 * Kick off a scrub to tickle scrub/export races.
5223 5226 */
5224 5227 if (ztest_random(2) == 0)
5225 5228 (void) spa_scan(spa, POOL_SCAN_SCRUB);
5226 5229
5227 5230 pool_guid = spa_guid(spa);
5228 5231 spa_close(spa, FTAG);
5229 5232
5230 5233 ztest_walk_pool_directory("pools before export");
5231 5234
5232 5235 /*
5233 5236 * Export it.
5234 5237 */
5235 5238 VERIFY3U(0, ==, spa_export(oldname, &config, B_FALSE, B_FALSE));
5236 5239
5237 5240 ztest_walk_pool_directory("pools after export");
5238 5241
5239 5242 /*
5240 5243 * Try to import it.
5241 5244 */
5242 5245 newconfig = spa_tryimport(config);
5243 5246 ASSERT(newconfig != NULL);
5244 5247 nvlist_free(newconfig);
5245 5248
5246 5249 /*
5247 5250 * Import it under the new name.
5248 5251 */
5249 5252 error = spa_import(newname, config, NULL, 0);
5250 5253 if (error != 0) {
5251 5254 dump_nvlist(config, 0);
5252 5255 fatal(B_FALSE, "couldn't import pool %s as %s: error %u",
5253 5256 oldname, newname, error);
5254 5257 }
5255 5258
5256 5259 ztest_walk_pool_directory("pools after import");
5257 5260
5258 5261 /*
5259 5262 * Try to import it again -- should fail with EEXIST.
5260 5263 */
5261 5264 VERIFY3U(EEXIST, ==, spa_import(newname, config, NULL, 0));
5262 5265
5263 5266 /*
5264 5267 * Try to import it under a different name -- should fail with EEXIST.
5265 5268 */
5266 5269 VERIFY3U(EEXIST, ==, spa_import(oldname, config, NULL, 0));
5267 5270
5268 5271 /*
5269 5272 * Verify that the pool is no longer visible under the old name.
5270 5273 */
5271 5274 VERIFY3U(ENOENT, ==, spa_open(oldname, &spa, FTAG));
5272 5275
5273 5276 /*
5274 5277 * Verify that we can open and close the pool using the new name.
5275 5278 */
5276 5279 VERIFY3U(0, ==, spa_open(newname, &spa, FTAG));
5277 5280 ASSERT(pool_guid == spa_guid(spa));
5278 5281 spa_close(spa, FTAG);
5279 5282
5280 5283 nvlist_free(config);
5281 5284 }
5282 5285
5283 5286 static void
5284 5287 ztest_resume(spa_t *spa)
5285 5288 {
5286 5289 if (spa_suspended(spa) && ztest_opts.zo_verbose >= 6)
5287 5290 (void) printf("resuming from suspended state\n");
5288 5291 spa_vdev_state_enter(spa, SCL_NONE);
5289 5292 vdev_clear(spa, NULL);
5290 5293 (void) spa_vdev_state_exit(spa, NULL, 0);
5291 5294 (void) zio_resume(spa);
5292 5295 }
5293 5296
5294 5297 static void *
5295 5298 ztest_resume_thread(void *arg)
5296 5299 {
5297 5300 spa_t *spa = arg;
5298 5301
5299 5302 while (!ztest_exiting) {
5300 5303 if (spa_suspended(spa))
5301 5304 ztest_resume(spa);
5302 5305 (void) poll(NULL, 0, 100);
5303 5306 }
5304 5307 return (NULL);
5305 5308 }
5306 5309
5307 5310 static void *
5308 5311 ztest_deadman_thread(void *arg)
5309 5312 {
5310 5313 ztest_shared_t *zs = arg;
5311 5314 spa_t *spa = ztest_spa;
5312 5315 hrtime_t delta, total = 0;
5313 5316
5314 5317 for (;;) {
5315 5318 delta = (zs->zs_thread_stop - zs->zs_thread_start) /
5316 5319 NANOSEC + zfs_deadman_synctime;
5317 5320
5318 5321 (void) poll(NULL, 0, (int)(1000 * delta));
5319 5322
5320 5323 /*
5321 5324 * If the pool is suspended then fail immediately. Otherwise,
5322 5325 * check to see if the pool is making any progress. If
5323 5326 * vdev_deadman() discovers that there hasn't been any recent
5324 5327 * I/Os then it will end up aborting the tests.
5325 5328 */
5326 5329 if (spa_suspended(spa)) {
5327 5330 fatal(0, "aborting test after %llu seconds because "
5328 5331 "pool has transitioned to a suspended state.",
5329 5332 zfs_deadman_synctime);
5330 5333 return (NULL);
5331 5334 }
5332 5335 vdev_deadman(spa->spa_root_vdev);
5333 5336
5334 5337 total += zfs_deadman_synctime;
5335 5338 (void) printf("ztest has been running for %lld seconds\n",
5336 5339 total);
5337 5340 }
5338 5341 }
5339 5342
5340 5343 static void
5341 5344 ztest_execute(int test, ztest_info_t *zi, uint64_t id)
5342 5345 {
5343 5346 ztest_ds_t *zd = &ztest_ds[id % ztest_opts.zo_datasets];
5344 5347 ztest_shared_callstate_t *zc = ZTEST_GET_SHARED_CALLSTATE(test);
5345 5348 hrtime_t functime = gethrtime();
5346 5349
5347 5350 for (int i = 0; i < zi->zi_iters; i++)
5348 5351 zi->zi_func(zd, id);
5349 5352
5350 5353 functime = gethrtime() - functime;
5351 5354
5352 5355 atomic_add_64(&zc->zc_count, 1);
5353 5356 atomic_add_64(&zc->zc_time, functime);
5354 5357
5355 5358 if (ztest_opts.zo_verbose >= 4) {
5356 5359 Dl_info dli;
5357 5360 (void) dladdr((void *)zi->zi_func, &dli);
5358 5361 (void) printf("%6.2f sec in %s\n",
5359 5362 (double)functime / NANOSEC, dli.dli_sname);
5360 5363 }
5361 5364 }
5362 5365
5363 5366 static void *
5364 5367 ztest_thread(void *arg)
5365 5368 {
5366 5369 int rand;
5367 5370 uint64_t id = (uintptr_t)arg;
5368 5371 ztest_shared_t *zs = ztest_shared;
5369 5372 uint64_t call_next;
5370 5373 hrtime_t now;
5371 5374 ztest_info_t *zi;
5372 5375 ztest_shared_callstate_t *zc;
5373 5376
5374 5377 while ((now = gethrtime()) < zs->zs_thread_stop) {
5375 5378 /*
5376 5379 * See if it's time to force a crash.
5377 5380 */
5378 5381 if (now > zs->zs_thread_kill)
5379 5382 ztest_kill(zs);
5380 5383
5381 5384 /*
5382 5385 * If we're getting ENOSPC with some regularity, stop.
5383 5386 */
5384 5387 if (zs->zs_enospc_count > 10)
5385 5388 break;
5386 5389
5387 5390 /*
5388 5391 * Pick a random function to execute.
5389 5392 */
5390 5393 rand = ztest_random(ZTEST_FUNCS);
5391 5394 zi = &ztest_info[rand];
5392 5395 zc = ZTEST_GET_SHARED_CALLSTATE(rand);
5393 5396 call_next = zc->zc_next;
5394 5397
5395 5398 if (now >= call_next &&
5396 5399 atomic_cas_64(&zc->zc_next, call_next, call_next +
5397 5400 ztest_random(2 * zi->zi_interval[0] + 1)) == call_next) {
5398 5401 ztest_execute(rand, zi, id);
5399 5402 }
5400 5403 }
5401 5404
5402 5405 return (NULL);
5403 5406 }
5404 5407
5405 5408 static void
5406 5409 ztest_dataset_name(char *dsname, char *pool, int d)
5407 5410 {
5408 5411 (void) snprintf(dsname, MAXNAMELEN, "%s/ds_%d", pool, d);
5409 5412 }
5410 5413
5411 5414 static void
5412 5415 ztest_dataset_destroy(int d)
5413 5416 {
5414 5417 char name[MAXNAMELEN];
5415 5418
5416 5419 ztest_dataset_name(name, ztest_opts.zo_pool, d);
5417 5420
5418 5421 if (ztest_opts.zo_verbose >= 3)
5419 5422 (void) printf("Destroying %s to free up space\n", name);
5420 5423
5421 5424 /*
5422 5425 * Cleanup any non-standard clones and snapshots. In general,
5423 5426 * ztest thread t operates on dataset (t % zopt_datasets),
5424 5427 * so there may be more than one thing to clean up.
5425 5428 */
5426 5429 for (int t = d; t < ztest_opts.zo_threads;
5427 5430 t += ztest_opts.zo_datasets) {
5428 5431 ztest_dsl_dataset_cleanup(name, t);
5429 5432 }
5430 5433
5431 5434 (void) dmu_objset_find(name, ztest_objset_destroy_cb, NULL,
5432 5435 DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
5433 5436 }
5434 5437
5435 5438 static void
5436 5439 ztest_dataset_dirobj_verify(ztest_ds_t *zd)
5437 5440 {
5438 5441 uint64_t usedobjs, dirobjs, scratch;
5439 5442
5440 5443 /*
5441 5444 * ZTEST_DIROBJ is the object directory for the entire dataset.
5442 5445 * Therefore, the number of objects in use should equal the
5443 5446 * number of ZTEST_DIROBJ entries, +1 for ZTEST_DIROBJ itself.
5444 5447 * If not, we have an object leak.
5445 5448 *
5446 5449 * Note that we can only check this in ztest_dataset_open(),
5447 5450 * when the open-context and syncing-context values agree.
5448 5451 * That's because zap_count() returns the open-context value,
5449 5452 * while dmu_objset_space() returns the rootbp fill count.
5450 5453 */
5451 5454 VERIFY3U(0, ==, zap_count(zd->zd_os, ZTEST_DIROBJ, &dirobjs));
5452 5455 dmu_objset_space(zd->zd_os, &scratch, &scratch, &usedobjs, &scratch);
5453 5456 ASSERT3U(dirobjs + 1, ==, usedobjs);
5454 5457 }
5455 5458
5456 5459 static int
5457 5460 ztest_dataset_open(int d)
5458 5461 {
5459 5462 ztest_ds_t *zd = &ztest_ds[d];
5460 5463 uint64_t committed_seq = ZTEST_GET_SHARED_DS(d)->zd_seq;
5461 5464 objset_t *os;
5462 5465 zilog_t *zilog;
5463 5466 char name[MAXNAMELEN];
5464 5467 int error;
5465 5468
5466 5469 ztest_dataset_name(name, ztest_opts.zo_pool, d);
5467 5470
5468 5471 (void) rw_rdlock(&ztest_name_lock);
5469 5472
5470 5473 error = ztest_dataset_create(name);
5471 5474 if (error == ENOSPC) {
5472 5475 (void) rw_unlock(&ztest_name_lock);
5473 5476 ztest_record_enospc(FTAG);
5474 5477 return (error);
5475 5478 }
5476 5479 ASSERT(error == 0 || error == EEXIST);
5477 5480
5478 5481 VERIFY0(dmu_objset_own(name, DMU_OST_OTHER, B_FALSE, zd, &os));
5479 5482 (void) rw_unlock(&ztest_name_lock);
5480 5483
5481 5484 ztest_zd_init(zd, ZTEST_GET_SHARED_DS(d), os);
5482 5485
5483 5486 zilog = zd->zd_zilog;
5484 5487
5485 5488 if (zilog->zl_header->zh_claim_lr_seq != 0 &&
5486 5489 zilog->zl_header->zh_claim_lr_seq < committed_seq)
5487 5490 fatal(0, "missing log records: claimed %llu < committed %llu",
5488 5491 zilog->zl_header->zh_claim_lr_seq, committed_seq);
5489 5492
5490 5493 ztest_dataset_dirobj_verify(zd);
5491 5494
5492 5495 zil_replay(os, zd, ztest_replay_vector);
5493 5496
5494 5497 ztest_dataset_dirobj_verify(zd);
5495 5498
5496 5499 if (ztest_opts.zo_verbose >= 6)
5497 5500 (void) printf("%s replay %llu blocks, %llu records, seq %llu\n",
5498 5501 zd->zd_name,
5499 5502 (u_longlong_t)zilog->zl_parse_blk_count,
5500 5503 (u_longlong_t)zilog->zl_parse_lr_count,
5501 5504 (u_longlong_t)zilog->zl_replaying_seq);
5502 5505
5503 5506 zilog = zil_open(os, ztest_get_data);
5504 5507
5505 5508 if (zilog->zl_replaying_seq != 0 &&
5506 5509 zilog->zl_replaying_seq < committed_seq)
5507 5510 fatal(0, "missing log records: replayed %llu < committed %llu",
5508 5511 zilog->zl_replaying_seq, committed_seq);
5509 5512
5510 5513 return (0);
5511 5514 }
5512 5515
5513 5516 static void
5514 5517 ztest_dataset_close(int d)
5515 5518 {
5516 5519 ztest_ds_t *zd = &ztest_ds[d];
5517 5520
5518 5521 zil_close(zd->zd_zilog);
5519 5522 dmu_objset_disown(zd->zd_os, zd);
5520 5523
5521 5524 ztest_zd_fini(zd);
5522 5525 }
5523 5526
5524 5527 /*
5525 5528 * Kick off threads to run tests on all datasets in parallel.
5526 5529 */
5527 5530 static void
5528 5531 ztest_run(ztest_shared_t *zs)
5529 5532 {
5530 5533 thread_t *tid;
5531 5534 spa_t *spa;
5532 5535 objset_t *os;
5533 5536 thread_t resume_tid;
5534 5537 int error;
5535 5538
5536 5539 ztest_exiting = B_FALSE;
5537 5540
5538 5541 /*
5539 5542 * Initialize parent/child shared state.
5540 5543 */
5541 5544 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5542 5545 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5543 5546
5544 5547 zs->zs_thread_start = gethrtime();
5545 5548 zs->zs_thread_stop =
5546 5549 zs->zs_thread_start + ztest_opts.zo_passtime * NANOSEC;
5547 5550 zs->zs_thread_stop = MIN(zs->zs_thread_stop, zs->zs_proc_stop);
5548 5551 zs->zs_thread_kill = zs->zs_thread_stop;
5549 5552 if (ztest_random(100) < ztest_opts.zo_killrate) {
5550 5553 zs->zs_thread_kill -=
5551 5554 ztest_random(ztest_opts.zo_passtime * NANOSEC);
5552 5555 }
5553 5556
5554 5557 (void) _mutex_init(&zcl.zcl_callbacks_lock, USYNC_THREAD, NULL);
5555 5558
5556 5559 list_create(&zcl.zcl_callbacks, sizeof (ztest_cb_data_t),
5557 5560 offsetof(ztest_cb_data_t, zcd_node));
5558 5561
5559 5562 /*
5560 5563 * Open our pool.
5561 5564 */
5562 5565 kernel_init(FREAD | FWRITE);
5563 5566 VERIFY0(spa_open(ztest_opts.zo_pool, &spa, FTAG));
5564 5567 spa->spa_debug = B_TRUE;
5565 5568 ztest_spa = spa;
5566 5569
5567 5570 VERIFY0(dmu_objset_own(ztest_opts.zo_pool,
5568 5571 DMU_OST_ANY, B_TRUE, FTAG, &os));
5569 5572 zs->zs_guid = dmu_objset_fsid_guid(os);
5570 5573 dmu_objset_disown(os, FTAG);
5571 5574
5572 5575 spa->spa_dedup_ditto = 2 * ZIO_DEDUPDITTO_MIN;
5573 5576
5574 5577 /*
5575 5578 * We don't expect the pool to suspend unless maxfaults == 0,
5576 5579 * in which case ztest_fault_inject() temporarily takes away
5577 5580 * the only valid replica.
5578 5581 */
5579 5582 if (MAXFAULTS() == 0)
5580 5583 spa->spa_failmode = ZIO_FAILURE_MODE_WAIT;
5581 5584 else
5582 5585 spa->spa_failmode = ZIO_FAILURE_MODE_PANIC;
5583 5586
5584 5587 /*
5585 5588 * Create a thread to periodically resume suspended I/O.
5586 5589 */
5587 5590 VERIFY(thr_create(0, 0, ztest_resume_thread, spa, THR_BOUND,
5588 5591 &resume_tid) == 0);
5589 5592
5590 5593 /*
5591 5594 * Create a deadman thread to abort() if we hang.
5592 5595 */
5593 5596 VERIFY(thr_create(0, 0, ztest_deadman_thread, zs, THR_BOUND,
5594 5597 NULL) == 0);
5595 5598
5596 5599 /*
5597 5600 * Verify that we can safely inquire about about any object,
5598 5601 * whether it's allocated or not. To make it interesting,
5599 5602 * we probe a 5-wide window around each power of two.
5600 5603 * This hits all edge cases, including zero and the max.
5601 5604 */
5602 5605 for (int t = 0; t < 64; t++) {
5603 5606 for (int d = -5; d <= 5; d++) {
5604 5607 error = dmu_object_info(spa->spa_meta_objset,
5605 5608 (1ULL << t) + d, NULL);
5606 5609 ASSERT(error == 0 || error == ENOENT ||
5607 5610 error == EINVAL);
5608 5611 }
5609 5612 }
5610 5613
5611 5614 /*
5612 5615 * If we got any ENOSPC errors on the previous run, destroy something.
5613 5616 */
5614 5617 if (zs->zs_enospc_count != 0) {
5615 5618 int d = ztest_random(ztest_opts.zo_datasets);
5616 5619 ztest_dataset_destroy(d);
5617 5620 }
5618 5621 zs->zs_enospc_count = 0;
5619 5622
5620 5623 tid = umem_zalloc(ztest_opts.zo_threads * sizeof (thread_t),
5621 5624 UMEM_NOFAIL);
5622 5625
5623 5626 if (ztest_opts.zo_verbose >= 4)
5624 5627 (void) printf("starting main threads...\n");
5625 5628
5626 5629 /*
5627 5630 * Kick off all the tests that run in parallel.
5628 5631 */
5629 5632 for (int t = 0; t < ztest_opts.zo_threads; t++) {
5630 5633 if (t < ztest_opts.zo_datasets &&
5631 5634 ztest_dataset_open(t) != 0)
5632 5635 return;
5633 5636 VERIFY(thr_create(0, 0, ztest_thread, (void *)(uintptr_t)t,
5634 5637 THR_BOUND, &tid[t]) == 0);
5635 5638 }
5636 5639
5637 5640 /*
5638 5641 * Wait for all of the tests to complete. We go in reverse order
5639 5642 * so we don't close datasets while threads are still using them.
5640 5643 */
5641 5644 for (int t = ztest_opts.zo_threads - 1; t >= 0; t--) {
5642 5645 VERIFY(thr_join(tid[t], NULL, NULL) == 0);
5643 5646 if (t < ztest_opts.zo_datasets)
5644 5647 ztest_dataset_close(t);
5645 5648 }
5646 5649
5647 5650 txg_wait_synced(spa_get_dsl(spa), 0);
5648 5651
5649 5652 zs->zs_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
5650 5653 zs->zs_space = metaslab_class_get_space(spa_normal_class(spa));
5651 5654
5652 5655 umem_free(tid, ztest_opts.zo_threads * sizeof (thread_t));
5653 5656
5654 5657 /* Kill the resume thread */
5655 5658 ztest_exiting = B_TRUE;
5656 5659 VERIFY(thr_join(resume_tid, NULL, NULL) == 0);
5657 5660 ztest_resume(spa);
5658 5661
5659 5662 /*
5660 5663 * Right before closing the pool, kick off a bunch of async I/O;
5661 5664 * spa_close() should wait for it to complete.
5662 5665 */
5663 5666 for (uint64_t object = 1; object < 50; object++)
5664 5667 dmu_prefetch(spa->spa_meta_objset, object, 0, 1ULL << 20);
5665 5668
5666 5669 spa_close(spa, FTAG);
5667 5670
5668 5671 /*
5669 5672 * Verify that we can loop over all pools.
5670 5673 */
5671 5674 mutex_enter(&spa_namespace_lock);
5672 5675 for (spa = spa_next(NULL); spa != NULL; spa = spa_next(spa))
5673 5676 if (ztest_opts.zo_verbose > 3)
5674 5677 (void) printf("spa_next: found %s\n", spa_name(spa));
5675 5678 mutex_exit(&spa_namespace_lock);
5676 5679
5677 5680 /*
5678 5681 * Verify that we can export the pool and reimport it under a
5679 5682 * different name.
5680 5683 */
5681 5684 if (ztest_random(2) == 0) {
5682 5685 char name[MAXNAMELEN];
5683 5686 (void) snprintf(name, MAXNAMELEN, "%s_import",
5684 5687 ztest_opts.zo_pool);
5685 5688 ztest_spa_import_export(ztest_opts.zo_pool, name);
5686 5689 ztest_spa_import_export(name, ztest_opts.zo_pool);
5687 5690 }
5688 5691
5689 5692 kernel_fini();
5690 5693
5691 5694 list_destroy(&zcl.zcl_callbacks);
5692 5695
5693 5696 (void) _mutex_destroy(&zcl.zcl_callbacks_lock);
5694 5697
5695 5698 (void) rwlock_destroy(&ztest_name_lock);
5696 5699 (void) _mutex_destroy(&ztest_vdev_lock);
5697 5700 }
5698 5701
5699 5702 static void
5700 5703 ztest_freeze(void)
5701 5704 {
5702 5705 ztest_ds_t *zd = &ztest_ds[0];
5703 5706 spa_t *spa;
5704 5707 int numloops = 0;
5705 5708
5706 5709 if (ztest_opts.zo_verbose >= 3)
5707 5710 (void) printf("testing spa_freeze()...\n");
5708 5711
5709 5712 kernel_init(FREAD | FWRITE);
5710 5713 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5711 5714 VERIFY3U(0, ==, ztest_dataset_open(0));
5712 5715 spa->spa_debug = B_TRUE;
5713 5716 ztest_spa = spa;
5714 5717
5715 5718 /*
5716 5719 * Force the first log block to be transactionally allocated.
5717 5720 * We have to do this before we freeze the pool -- otherwise
5718 5721 * the log chain won't be anchored.
5719 5722 */
5720 5723 while (BP_IS_HOLE(&zd->zd_zilog->zl_header->zh_log)) {
5721 5724 ztest_dmu_object_alloc_free(zd, 0);
5722 5725 zil_commit(zd->zd_zilog, 0);
5723 5726 }
5724 5727
5725 5728 txg_wait_synced(spa_get_dsl(spa), 0);
5726 5729
5727 5730 /*
5728 5731 * Freeze the pool. This stops spa_sync() from doing anything,
5729 5732 * so that the only way to record changes from now on is the ZIL.
5730 5733 */
5731 5734 spa_freeze(spa);
5732 5735
5733 5736 /*
5734 5737 * Run tests that generate log records but don't alter the pool config
5735 5738 * or depend on DSL sync tasks (snapshots, objset create/destroy, etc).
5736 5739 * We do a txg_wait_synced() after each iteration to force the txg
5737 5740 * to increase well beyond the last synced value in the uberblock.
5738 5741 * The ZIL should be OK with that.
5739 5742 */
5740 5743 while (ztest_random(10) != 0 &&
5741 5744 numloops++ < ztest_opts.zo_maxloops) {
5742 5745 ztest_dmu_write_parallel(zd, 0);
5743 5746 ztest_dmu_object_alloc_free(zd, 0);
5744 5747 txg_wait_synced(spa_get_dsl(spa), 0);
5745 5748 }
5746 5749
5747 5750 /*
5748 5751 * Commit all of the changes we just generated.
5749 5752 */
5750 5753 zil_commit(zd->zd_zilog, 0);
5751 5754 txg_wait_synced(spa_get_dsl(spa), 0);
5752 5755
5753 5756 /*
5754 5757 * Close our dataset and close the pool.
5755 5758 */
5756 5759 ztest_dataset_close(0);
5757 5760 spa_close(spa, FTAG);
5758 5761 kernel_fini();
5759 5762
5760 5763 /*
5761 5764 * Open and close the pool and dataset to induce log replay.
5762 5765 */
5763 5766 kernel_init(FREAD | FWRITE);
5764 5767 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5765 5768 ASSERT(spa_freeze_txg(spa) == UINT64_MAX);
5766 5769 VERIFY3U(0, ==, ztest_dataset_open(0));
5767 5770 ztest_dataset_close(0);
5768 5771
5769 5772 spa->spa_debug = B_TRUE;
5770 5773 ztest_spa = spa;
5771 5774 txg_wait_synced(spa_get_dsl(spa), 0);
5772 5775 ztest_reguid(NULL, 0);
5773 5776
5774 5777 spa_close(spa, FTAG);
5775 5778 kernel_fini();
5776 5779 }
5777 5780
5778 5781 void
5779 5782 print_time(hrtime_t t, char *timebuf)
5780 5783 {
5781 5784 hrtime_t s = t / NANOSEC;
5782 5785 hrtime_t m = s / 60;
5783 5786 hrtime_t h = m / 60;
5784 5787 hrtime_t d = h / 24;
5785 5788
5786 5789 s -= m * 60;
5787 5790 m -= h * 60;
5788 5791 h -= d * 24;
5789 5792
5790 5793 timebuf[0] = '\0';
5791 5794
5792 5795 if (d)
5793 5796 (void) sprintf(timebuf,
5794 5797 "%llud%02lluh%02llum%02llus", d, h, m, s);
5795 5798 else if (h)
5796 5799 (void) sprintf(timebuf, "%lluh%02llum%02llus", h, m, s);
5797 5800 else if (m)
5798 5801 (void) sprintf(timebuf, "%llum%02llus", m, s);
5799 5802 else
5800 5803 (void) sprintf(timebuf, "%llus", s);
5801 5804 }
5802 5805
5803 5806 static nvlist_t *
5804 5807 make_random_props()
5805 5808 {
5806 5809 nvlist_t *props;
5807 5810
5808 5811 VERIFY(nvlist_alloc(&props, NV_UNIQUE_NAME, 0) == 0);
5809 5812 if (ztest_random(2) == 0)
5810 5813 return (props);
5811 5814 VERIFY(nvlist_add_uint64(props, "autoreplace", 1) == 0);
5812 5815
5813 5816 return (props);
5814 5817 }
5815 5818
5816 5819 /*
5817 5820 * Create a storage pool with the given name and initial vdev size.
5818 5821 * Then test spa_freeze() functionality.
5819 5822 */
5820 5823 static void
5821 5824 ztest_init(ztest_shared_t *zs)
5822 5825 {
5823 5826 spa_t *spa;
5824 5827 nvlist_t *nvroot, *props;
5825 5828
5826 5829 VERIFY(_mutex_init(&ztest_vdev_lock, USYNC_THREAD, NULL) == 0);
5827 5830 VERIFY(rwlock_init(&ztest_name_lock, USYNC_THREAD, NULL) == 0);
5828 5831
5829 5832 kernel_init(FREAD | FWRITE);
5830 5833
5831 5834 /*
5832 5835 * Create the storage pool.
5833 5836 */
5834 5837 (void) spa_destroy(ztest_opts.zo_pool);
5835 5838 ztest_shared->zs_vdev_next_leaf = 0;
5836 5839 zs->zs_splits = 0;
5837 5840 zs->zs_mirrors = ztest_opts.zo_mirrors;
5838 5841 nvroot = make_vdev_root(NULL, NULL, NULL, ztest_opts.zo_vdev_size, 0,
5839 5842 0, ztest_opts.zo_raidz, zs->zs_mirrors, 1);
5840 5843 props = make_random_props();
5841 5844 for (int i = 0; i < SPA_FEATURES; i++) {
5842 5845 char buf[1024];
5843 5846 (void) snprintf(buf, sizeof (buf), "feature@%s",
5844 5847 spa_feature_table[i].fi_uname);
5845 5848 VERIFY3U(0, ==, nvlist_add_uint64(props, buf, 0));
5846 5849 }
5847 5850 VERIFY3U(0, ==, spa_create(ztest_opts.zo_pool, nvroot, props, NULL));
5848 5851 nvlist_free(nvroot);
5849 5852
5850 5853 VERIFY3U(0, ==, spa_open(ztest_opts.zo_pool, &spa, FTAG));
5851 5854 zs->zs_metaslab_sz =
5852 5855 1ULL << spa->spa_root_vdev->vdev_child[0]->vdev_ms_shift;
5853 5856
5854 5857 spa_close(spa, FTAG);
5855 5858
5856 5859 kernel_fini();
5857 5860
5858 5861 ztest_run_zdb(ztest_opts.zo_pool);
5859 5862
5860 5863 ztest_freeze();
5861 5864
5862 5865 ztest_run_zdb(ztest_opts.zo_pool);
5863 5866
5864 5867 (void) rwlock_destroy(&ztest_name_lock);
5865 5868 (void) _mutex_destroy(&ztest_vdev_lock);
5866 5869 }
5867 5870
5868 5871 static void
5869 5872 setup_data_fd(void)
5870 5873 {
5871 5874 static char ztest_name_data[] = "/tmp/ztest.data.XXXXXX";
5872 5875
5873 5876 ztest_fd_data = mkstemp(ztest_name_data);
5874 5877 ASSERT3S(ztest_fd_data, >=, 0);
5875 5878 (void) unlink(ztest_name_data);
5876 5879 }
5877 5880
5878 5881
5879 5882 static int
5880 5883 shared_data_size(ztest_shared_hdr_t *hdr)
5881 5884 {
5882 5885 int size;
5883 5886
5884 5887 size = hdr->zh_hdr_size;
5885 5888 size += hdr->zh_opts_size;
5886 5889 size += hdr->zh_size;
5887 5890 size += hdr->zh_stats_size * hdr->zh_stats_count;
5888 5891 size += hdr->zh_ds_size * hdr->zh_ds_count;
5889 5892
5890 5893 return (size);
5891 5894 }
5892 5895
5893 5896 static void
5894 5897 setup_hdr(void)
5895 5898 {
5896 5899 int size;
5897 5900 ztest_shared_hdr_t *hdr;
5898 5901
5899 5902 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
5900 5903 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
5901 5904 ASSERT(hdr != MAP_FAILED);
5902 5905
5903 5906 VERIFY3U(0, ==, ftruncate(ztest_fd_data, sizeof (ztest_shared_hdr_t)));
5904 5907
5905 5908 hdr->zh_hdr_size = sizeof (ztest_shared_hdr_t);
5906 5909 hdr->zh_opts_size = sizeof (ztest_shared_opts_t);
5907 5910 hdr->zh_size = sizeof (ztest_shared_t);
5908 5911 hdr->zh_stats_size = sizeof (ztest_shared_callstate_t);
5909 5912 hdr->zh_stats_count = ZTEST_FUNCS;
5910 5913 hdr->zh_ds_size = sizeof (ztest_shared_ds_t);
5911 5914 hdr->zh_ds_count = ztest_opts.zo_datasets;
5912 5915
5913 5916 size = shared_data_size(hdr);
5914 5917 VERIFY3U(0, ==, ftruncate(ztest_fd_data, size));
5915 5918
5916 5919 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
5917 5920 }
5918 5921
5919 5922 static void
5920 5923 setup_data(void)
5921 5924 {
5922 5925 int size, offset;
5923 5926 ztest_shared_hdr_t *hdr;
5924 5927 uint8_t *buf;
5925 5928
5926 5929 hdr = (void *)mmap(0, P2ROUNDUP(sizeof (*hdr), getpagesize()),
5927 5930 PROT_READ, MAP_SHARED, ztest_fd_data, 0);
5928 5931 ASSERT(hdr != MAP_FAILED);
5929 5932
5930 5933 size = shared_data_size(hdr);
5931 5934
5932 5935 (void) munmap((caddr_t)hdr, P2ROUNDUP(sizeof (*hdr), getpagesize()));
5933 5936 hdr = ztest_shared_hdr = (void *)mmap(0, P2ROUNDUP(size, getpagesize()),
5934 5937 PROT_READ | PROT_WRITE, MAP_SHARED, ztest_fd_data, 0);
5935 5938 ASSERT(hdr != MAP_FAILED);
5936 5939 buf = (uint8_t *)hdr;
5937 5940
5938 5941 offset = hdr->zh_hdr_size;
5939 5942 ztest_shared_opts = (void *)&buf[offset];
5940 5943 offset += hdr->zh_opts_size;
5941 5944 ztest_shared = (void *)&buf[offset];
5942 5945 offset += hdr->zh_size;
5943 5946 ztest_shared_callstate = (void *)&buf[offset];
5944 5947 offset += hdr->zh_stats_size * hdr->zh_stats_count;
5945 5948 ztest_shared_ds = (void *)&buf[offset];
5946 5949 }
5947 5950
5948 5951 static boolean_t
5949 5952 exec_child(char *cmd, char *libpath, boolean_t ignorekill, int *statusp)
5950 5953 {
5951 5954 pid_t pid;
5952 5955 int status;
5953 5956 char *cmdbuf = NULL;
5954 5957
5955 5958 pid = fork();
5956 5959
5957 5960 if (cmd == NULL) {
5958 5961 cmdbuf = umem_alloc(MAXPATHLEN, UMEM_NOFAIL);
5959 5962 (void) strlcpy(cmdbuf, getexecname(), MAXPATHLEN);
5960 5963 cmd = cmdbuf;
5961 5964 }
5962 5965
5963 5966 if (pid == -1)
5964 5967 fatal(1, "fork failed");
5965 5968
5966 5969 if (pid == 0) { /* child */
5967 5970 char *emptyargv[2] = { cmd, NULL };
5968 5971 char fd_data_str[12];
5969 5972
5970 5973 struct rlimit rl = { 1024, 1024 };
5971 5974 (void) setrlimit(RLIMIT_NOFILE, &rl);
5972 5975
5973 5976 (void) close(ztest_fd_rand);
5974 5977 VERIFY3U(11, >=,
5975 5978 snprintf(fd_data_str, 12, "%d", ztest_fd_data));
5976 5979 VERIFY0(setenv("ZTEST_FD_DATA", fd_data_str, 1));
5977 5980
5978 5981 (void) enable_extended_FILE_stdio(-1, -1);
5979 5982 if (libpath != NULL)
5980 5983 VERIFY(0 == setenv("LD_LIBRARY_PATH", libpath, 1));
5981 5984 (void) execv(cmd, emptyargv);
5982 5985 ztest_dump_core = B_FALSE;
5983 5986 fatal(B_TRUE, "exec failed: %s", cmd);
5984 5987 }
5985 5988
5986 5989 if (cmdbuf != NULL) {
5987 5990 umem_free(cmdbuf, MAXPATHLEN);
5988 5991 cmd = NULL;
5989 5992 }
5990 5993
5991 5994 while (waitpid(pid, &status, 0) != pid)
5992 5995 continue;
5993 5996 if (statusp != NULL)
5994 5997 *statusp = status;
5995 5998
5996 5999 if (WIFEXITED(status)) {
5997 6000 if (WEXITSTATUS(status) != 0) {
5998 6001 (void) fprintf(stderr, "child exited with code %d\n",
5999 6002 WEXITSTATUS(status));
6000 6003 exit(2);
6001 6004 }
6002 6005 return (B_FALSE);
6003 6006 } else if (WIFSIGNALED(status)) {
6004 6007 if (!ignorekill || WTERMSIG(status) != SIGKILL) {
6005 6008 (void) fprintf(stderr, "child died with signal %d\n",
6006 6009 WTERMSIG(status));
6007 6010 exit(3);
6008 6011 }
6009 6012 return (B_TRUE);
6010 6013 } else {
6011 6014 (void) fprintf(stderr, "something strange happened to child\n");
6012 6015 exit(4);
6013 6016 /* NOTREACHED */
6014 6017 }
6015 6018 }
6016 6019
6017 6020 static void
6018 6021 ztest_run_init(void)
6019 6022 {
6020 6023 ztest_shared_t *zs = ztest_shared;
6021 6024
6022 6025 ASSERT(ztest_opts.zo_init != 0);
6023 6026
6024 6027 /*
6025 6028 * Blow away any existing copy of zpool.cache
6026 6029 */
6027 6030 (void) remove(spa_config_path);
6028 6031
6029 6032 /*
6030 6033 * Create and initialize our storage pool.
6031 6034 */
6032 6035 for (int i = 1; i <= ztest_opts.zo_init; i++) {
6033 6036 bzero(zs, sizeof (ztest_shared_t));
6034 6037 if (ztest_opts.zo_verbose >= 3 &&
6035 6038 ztest_opts.zo_init != 1) {
6036 6039 (void) printf("ztest_init(), pass %d\n", i);
6037 6040 }
6038 6041 ztest_init(zs);
6039 6042 }
6040 6043 }
6041 6044
6042 6045 int
6043 6046 main(int argc, char **argv)
6044 6047 {
6045 6048 int kills = 0;
6046 6049 int iters = 0;
6047 6050 int older = 0;
6048 6051 int newer = 0;
6049 6052 ztest_shared_t *zs;
6050 6053 ztest_info_t *zi;
6051 6054 ztest_shared_callstate_t *zc;
6052 6055 char timebuf[100];
6053 6056 char numbuf[6];
6054 6057 spa_t *spa;
6055 6058 char *cmd;
6056 6059 boolean_t hasalt;
6057 6060 char *fd_data_str = getenv("ZTEST_FD_DATA");
6058 6061
6059 6062 (void) setvbuf(stdout, NULL, _IOLBF, 0);
6060 6063
6061 6064 dprintf_setup(&argc, argv);
6062 6065 zfs_deadman_synctime = 300;
6063 6066
6064 6067 ztest_fd_rand = open("/dev/urandom", O_RDONLY);
6065 6068 ASSERT3S(ztest_fd_rand, >=, 0);
6066 6069
6067 6070 if (!fd_data_str) {
6068 6071 process_options(argc, argv);
6069 6072
6070 6073 setup_data_fd();
6071 6074 setup_hdr();
6072 6075 setup_data();
6073 6076 bcopy(&ztest_opts, ztest_shared_opts,
6074 6077 sizeof (*ztest_shared_opts));
6075 6078 } else {
6076 6079 ztest_fd_data = atoi(fd_data_str);
6077 6080 setup_data();
6078 6081 bcopy(ztest_shared_opts, &ztest_opts, sizeof (ztest_opts));
6079 6082 }
6080 6083 ASSERT3U(ztest_opts.zo_datasets, ==, ztest_shared_hdr->zh_ds_count);
6081 6084
6082 6085 /* Override location of zpool.cache */
6083 6086 VERIFY3U(asprintf((char **)&spa_config_path, "%s/zpool.cache",
6084 6087 ztest_opts.zo_dir), !=, -1);
6085 6088
6086 6089 ztest_ds = umem_alloc(ztest_opts.zo_datasets * sizeof (ztest_ds_t),
6087 6090 UMEM_NOFAIL);
6088 6091 zs = ztest_shared;
6089 6092
6090 6093 if (fd_data_str) {
6091 6094 metaslab_gang_bang = ztest_opts.zo_metaslab_gang_bang;
6092 6095 metaslab_df_alloc_threshold =
6093 6096 zs->zs_metaslab_df_alloc_threshold;
6094 6097
6095 6098 if (zs->zs_do_init)
6096 6099 ztest_run_init();
6097 6100 else
6098 6101 ztest_run(zs);
6099 6102 exit(0);
6100 6103 }
6101 6104
6102 6105 hasalt = (strlen(ztest_opts.zo_alt_ztest) != 0);
6103 6106
6104 6107 if (ztest_opts.zo_verbose >= 1) {
6105 6108 (void) printf("%llu vdevs, %d datasets, %d threads,"
6106 6109 " %llu seconds...\n",
6107 6110 (u_longlong_t)ztest_opts.zo_vdevs,
6108 6111 ztest_opts.zo_datasets,
6109 6112 ztest_opts.zo_threads,
6110 6113 (u_longlong_t)ztest_opts.zo_time);
6111 6114 }
6112 6115
6113 6116 cmd = umem_alloc(MAXNAMELEN, UMEM_NOFAIL);
6114 6117 (void) strlcpy(cmd, getexecname(), MAXNAMELEN);
6115 6118
6116 6119 zs->zs_do_init = B_TRUE;
6117 6120 if (strlen(ztest_opts.zo_alt_ztest) != 0) {
6118 6121 if (ztest_opts.zo_verbose >= 1) {
6119 6122 (void) printf("Executing older ztest for "
6120 6123 "initialization: %s\n", ztest_opts.zo_alt_ztest);
6121 6124 }
6122 6125 VERIFY(!exec_child(ztest_opts.zo_alt_ztest,
6123 6126 ztest_opts.zo_alt_libpath, B_FALSE, NULL));
6124 6127 } else {
6125 6128 VERIFY(!exec_child(NULL, NULL, B_FALSE, NULL));
6126 6129 }
6127 6130 zs->zs_do_init = B_FALSE;
6128 6131
6129 6132 zs->zs_proc_start = gethrtime();
6130 6133 zs->zs_proc_stop = zs->zs_proc_start + ztest_opts.zo_time * NANOSEC;
6131 6134
6132 6135 for (int f = 0; f < ZTEST_FUNCS; f++) {
6133 6136 zi = &ztest_info[f];
6134 6137 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6135 6138 if (zs->zs_proc_start + zi->zi_interval[0] > zs->zs_proc_stop)
6136 6139 zc->zc_next = UINT64_MAX;
6137 6140 else
6138 6141 zc->zc_next = zs->zs_proc_start +
6139 6142 ztest_random(2 * zi->zi_interval[0] + 1);
6140 6143 }
6141 6144
6142 6145 /*
6143 6146 * Run the tests in a loop. These tests include fault injection
6144 6147 * to verify that self-healing data works, and forced crashes
6145 6148 * to verify that we never lose on-disk consistency.
6146 6149 */
6147 6150 while (gethrtime() < zs->zs_proc_stop) {
6148 6151 int status;
6149 6152 boolean_t killed;
6150 6153
6151 6154 /*
6152 6155 * Initialize the workload counters for each function.
6153 6156 */
6154 6157 for (int f = 0; f < ZTEST_FUNCS; f++) {
6155 6158 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6156 6159 zc->zc_count = 0;
6157 6160 zc->zc_time = 0;
6158 6161 }
6159 6162
6160 6163 /* Set the allocation switch size */
6161 6164 zs->zs_metaslab_df_alloc_threshold =
6162 6165 ztest_random(zs->zs_metaslab_sz / 4) + 1;
6163 6166
6164 6167 if (!hasalt || ztest_random(2) == 0) {
6165 6168 if (hasalt && ztest_opts.zo_verbose >= 1) {
6166 6169 (void) printf("Executing newer ztest: %s\n",
6167 6170 cmd);
6168 6171 }
6169 6172 newer++;
6170 6173 killed = exec_child(cmd, NULL, B_TRUE, &status);
6171 6174 } else {
6172 6175 if (hasalt && ztest_opts.zo_verbose >= 1) {
6173 6176 (void) printf("Executing older ztest: %s\n",
6174 6177 ztest_opts.zo_alt_ztest);
6175 6178 }
6176 6179 older++;
6177 6180 killed = exec_child(ztest_opts.zo_alt_ztest,
6178 6181 ztest_opts.zo_alt_libpath, B_TRUE, &status);
6179 6182 }
6180 6183
6181 6184 if (killed)
6182 6185 kills++;
6183 6186 iters++;
6184 6187
6185 6188 if (ztest_opts.zo_verbose >= 1) {
6186 6189 hrtime_t now = gethrtime();
6187 6190
6188 6191 now = MIN(now, zs->zs_proc_stop);
6189 6192 print_time(zs->zs_proc_stop - now, timebuf);
6190 6193 nicenum(zs->zs_space, numbuf);
6191 6194
6192 6195 (void) printf("Pass %3d, %8s, %3llu ENOSPC, "
6193 6196 "%4.1f%% of %5s used, %3.0f%% done, %8s to go\n",
6194 6197 iters,
6195 6198 WIFEXITED(status) ? "Complete" : "SIGKILL",
6196 6199 (u_longlong_t)zs->zs_enospc_count,
6197 6200 100.0 * zs->zs_alloc / zs->zs_space,
6198 6201 numbuf,
6199 6202 100.0 * (now - zs->zs_proc_start) /
6200 6203 (ztest_opts.zo_time * NANOSEC), timebuf);
6201 6204 }
6202 6205
6203 6206 if (ztest_opts.zo_verbose >= 2) {
6204 6207 (void) printf("\nWorkload summary:\n\n");
6205 6208 (void) printf("%7s %9s %s\n",
6206 6209 "Calls", "Time", "Function");
6207 6210 (void) printf("%7s %9s %s\n",
6208 6211 "-----", "----", "--------");
6209 6212 for (int f = 0; f < ZTEST_FUNCS; f++) {
6210 6213 Dl_info dli;
6211 6214
6212 6215 zi = &ztest_info[f];
6213 6216 zc = ZTEST_GET_SHARED_CALLSTATE(f);
6214 6217 print_time(zc->zc_time, timebuf);
6215 6218 (void) dladdr((void *)zi->zi_func, &dli);
6216 6219 (void) printf("%7llu %9s %s\n",
6217 6220 (u_longlong_t)zc->zc_count, timebuf,
6218 6221 dli.dli_sname);
6219 6222 }
6220 6223 (void) printf("\n");
6221 6224 }
6222 6225
6223 6226 /*
6224 6227 * It's possible that we killed a child during a rename test,
6225 6228 * in which case we'll have a 'ztest_tmp' pool lying around
6226 6229 * instead of 'ztest'. Do a blind rename in case this happened.
6227 6230 */
6228 6231 kernel_init(FREAD);
6229 6232 if (spa_open(ztest_opts.zo_pool, &spa, FTAG) == 0) {
6230 6233 spa_close(spa, FTAG);
6231 6234 } else {
6232 6235 char tmpname[MAXNAMELEN];
6233 6236 kernel_fini();
6234 6237 kernel_init(FREAD | FWRITE);
6235 6238 (void) snprintf(tmpname, sizeof (tmpname), "%s_tmp",
6236 6239 ztest_opts.zo_pool);
6237 6240 (void) spa_rename(tmpname, ztest_opts.zo_pool);
6238 6241 }
6239 6242 kernel_fini();
6240 6243
6241 6244 ztest_run_zdb(ztest_opts.zo_pool);
6242 6245 }
6243 6246
6244 6247 if (ztest_opts.zo_verbose >= 1) {
6245 6248 if (hasalt) {
6246 6249 (void) printf("%d runs of older ztest: %s\n", older,
6247 6250 ztest_opts.zo_alt_ztest);
6248 6251 (void) printf("%d runs of newer ztest: %s\n", newer,
6249 6252 cmd);
6250 6253 }
6251 6254 (void) printf("%d killed, %d completed, %.0f%% kill rate\n",
6252 6255 kills, iters - kills, (100.0 * kills) / MAX(1, iters));
6253 6256 }
6254 6257
6255 6258 umem_free(cmd, MAXNAMELEN);
6256 6259
6257 6260 return (0);
6258 6261 }
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