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flush: only detect lack of flush support in one place
[zfs.git] / cmd / raidz_test / raidz_test.c
blob6a018ecf073778b5196254ad942baab826a61e2a
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (C) 2016 Gvozden Nešković. All rights reserved.
24 */
25
26 #include <sys/zfs_context.h>
27 #include <sys/time.h>
28 #include <sys/wait.h>
29 #include <sys/zio.h>
30 #include <umem.h>
31 #include <sys/vdev_raidz.h>
32 #include <sys/vdev_raidz_impl.h>
33 #include <assert.h>
34 #include <stdio.h>
35 #include "raidz_test.h"
36
37 static int *rand_data;
38 raidz_test_opts_t rto_opts;
39
40 static char pid_s[16];
41
42 static void sig_handler(int signo)
43 {
44 int old_errno = errno;
45 struct sigaction action;
46 /*
47 * Restore default action and re-raise signal so SIGSEGV and
48 * SIGABRT can trigger a core dump.
49 */
50 action.sa_handler = SIG_DFL;
51 sigemptyset(&action.sa_mask);
52 action.sa_flags = 0;
53 (void) sigaction(signo, &action, NULL);
54
55 if (rto_opts.rto_gdb) {
56 pid_t pid = fork();
57 if (pid == 0) {
58 execlp("gdb", "gdb", "-ex", "set pagination 0",
59 "-p", pid_s, NULL);
60 _exit(-1);
61 } else if (pid > 0)
62 while (waitpid(pid, NULL, 0) == -1 && errno == EINTR)
63 ;
64 }
65
66 raise(signo);
67 errno = old_errno;
68 }
69
70 static void print_opts(raidz_test_opts_t *opts, boolean_t force)
71 {
72 const char *verbose;
73 switch (opts->rto_v) {
74 case D_ALL:
75 verbose = "no";
76 break;
77 case D_INFO:
78 verbose = "info";
79 break;
80 case D_DEBUG:
81 default:
82 verbose = "debug";
83 break;
84 }
85
86 if (force || opts->rto_v >= D_INFO) {
87 (void) fprintf(stdout, DBLSEP "Running with options:\n"
88 " (-a) zio ashift : %zu\n"
89 " (-o) zio offset : 1 << %zu\n"
90 " (-e) expanded map : %s\n"
91 " (-r) reflow offset : %llx\n"
92 " (-d) number of raidz data columns : %zu\n"
93 " (-s) size of DATA : 1 << %zu\n"
94 " (-S) sweep parameters : %s \n"
95 " (-v) verbose : %s \n\n",
96 opts->rto_ashift, /* -a */
97 ilog2(opts->rto_offset), /* -o */
98 opts->rto_expand ? "yes" : "no", /* -e */
99 (u_longlong_t)opts->rto_expand_offset, /* -r */
100 opts->rto_dcols, /* -d */
101 ilog2(opts->rto_dsize), /* -s */
102 opts->rto_sweep ? "yes" : "no", /* -S */
103 verbose); /* -v */
104 }
105 }
106
107 static void usage(boolean_t requested)
108 {
109 const raidz_test_opts_t *o = &rto_opts_defaults;
110
111 FILE *fp = requested ? stdout : stderr;
112
113 (void) fprintf(fp, "Usage:\n"
114 "\t[-a zio ashift (default: %zu)]\n"
115 "\t[-o zio offset, exponent radix 2 (default: %zu)]\n"
116 "\t[-d number of raidz data columns (default: %zu)]\n"
117 "\t[-s zio size, exponent radix 2 (default: %zu)]\n"
118 "\t[-S parameter sweep (default: %s)]\n"
119 "\t[-t timeout for parameter sweep test]\n"
120 "\t[-B benchmark all raidz implementations]\n"
121 "\t[-e use expanded raidz map (default: %s)]\n"
122 "\t[-r expanded raidz map reflow offset (default: %llx)]\n"
123 "\t[-v increase verbosity (default: %d)]\n"
124 "\t[-h (print help)]\n"
125 "\t[-T test the test, see if failure would be detected]\n"
126 "\t[-D debug (attach gdb on SIGSEGV)]\n"
127 "",
128 o->rto_ashift, /* -a */
129 ilog2(o->rto_offset), /* -o */
130 o->rto_dcols, /* -d */
131 ilog2(o->rto_dsize), /* -s */
132 rto_opts.rto_sweep ? "yes" : "no", /* -S */
133 rto_opts.rto_expand ? "yes" : "no", /* -e */
134 (u_longlong_t)o->rto_expand_offset, /* -r */
135 o->rto_v); /* -v */
136
137 exit(requested ? 0 : 1);
138 }
139
140 static void process_options(int argc, char **argv)
141 {
142 size_t value;
143 int opt;
144 raidz_test_opts_t *o = &rto_opts;
145
146 memcpy(o, &rto_opts_defaults, sizeof (*o));
147
148 while ((opt = getopt(argc, argv, "TDBSvha:er:o:d:s:t:")) != -1) {
149 switch (opt) {
150 case 'a':
151 value = strtoull(optarg, NULL, 0);
152 o->rto_ashift = MIN(13, MAX(9, value));
153 break;
154 case 'e':
155 o->rto_expand = 1;
156 break;
157 case 'r':
158 o->rto_expand_offset = strtoull(optarg, NULL, 0);
159 break;
160 case 'o':
161 value = strtoull(optarg, NULL, 0);
162 o->rto_offset = ((1ULL << MIN(12, value)) >> 9) << 9;
163 break;
164 case 'd':
165 value = strtoull(optarg, NULL, 0);
166 o->rto_dcols = MIN(255, MAX(1, value));
167 break;
168 case 's':
169 value = strtoull(optarg, NULL, 0);
170 o->rto_dsize = 1ULL << MIN(SPA_MAXBLOCKSHIFT,
171 MAX(SPA_MINBLOCKSHIFT, value));
172 break;
173 case 't':
174 value = strtoull(optarg, NULL, 0);
175 o->rto_sweep_timeout = value;
176 break;
177 case 'v':
178 o->rto_v++;
179 break;
180 case 'S':
181 o->rto_sweep = 1;
182 break;
183 case 'B':
184 o->rto_benchmark = 1;
185 break;
186 case 'D':
187 o->rto_gdb = 1;
188 break;
189 case 'T':
190 o->rto_sanity = 1;
191 break;
192 case 'h':
193 usage(B_TRUE);
194 break;
195 case '?':
196 default:
197 usage(B_FALSE);
198 break;
199 }
200 }
201 }
202
203 #define DATA_COL(rr, i) ((rr)->rr_col[rr->rr_firstdatacol + (i)].rc_abd)
204 #define DATA_COL_SIZE(rr, i) ((rr)->rr_col[rr->rr_firstdatacol + (i)].rc_size)
205
206 #define CODE_COL(rr, i) ((rr)->rr_col[(i)].rc_abd)
207 #define CODE_COL_SIZE(rr, i) ((rr)->rr_col[(i)].rc_size)
208
209 static int
210 cmp_code(raidz_test_opts_t *opts, const raidz_map_t *rm, const int parity)
211 {
212 int r, i, ret = 0;
213
214 VERIFY(parity >= 1 && parity <= 3);
215
216 for (r = 0; r < rm->rm_nrows; r++) {
217 raidz_row_t * const rr = rm->rm_row[r];
218 raidz_row_t * const rrg = opts->rm_golden->rm_row[r];
219 for (i = 0; i < parity; i++) {
220 if (CODE_COL_SIZE(rrg, i) == 0) {
221 VERIFY0(CODE_COL_SIZE(rr, i));
222 continue;
223 }
224
225 if (abd_cmp(CODE_COL(rr, i),
226 CODE_COL(rrg, i)) != 0) {
227 ret++;
228 LOG_OPT(D_DEBUG, opts,
229 "\nParity block [%d] different!\n", i);
230 }
231 }
232 }
233 return (ret);
234 }
235
236 static int
237 cmp_data(raidz_test_opts_t *opts, raidz_map_t *rm)
238 {
239 int r, i, dcols, ret = 0;
240
241 for (r = 0; r < rm->rm_nrows; r++) {
242 raidz_row_t *rr = rm->rm_row[r];
243 raidz_row_t *rrg = opts->rm_golden->rm_row[r];
244 dcols = opts->rm_golden->rm_row[0]->rr_cols -
245 raidz_parity(opts->rm_golden);
246 for (i = 0; i < dcols; i++) {
247 if (DATA_COL_SIZE(rrg, i) == 0) {
248 VERIFY0(DATA_COL_SIZE(rr, i));
249 continue;
250 }
251
252 if (abd_cmp(DATA_COL(rrg, i),
253 DATA_COL(rr, i)) != 0) {
254 ret++;
255
256 LOG_OPT(D_DEBUG, opts,
257 "\nData block [%d] different!\n", i);
258 }
259 }
260 }
261 return (ret);
262 }
263
264 static int
265 init_rand(void *data, size_t size, void *private)
266 {
267 (void) private;
268 memcpy(data, rand_data, size);
269 return (0);
270 }
271
272 static void
273 corrupt_colums(raidz_map_t *rm, const int *tgts, const int cnt)
274 {
275 for (int r = 0; r < rm->rm_nrows; r++) {
276 raidz_row_t *rr = rm->rm_row[r];
277 for (int i = 0; i < cnt; i++) {
278 raidz_col_t *col = &rr->rr_col[tgts[i]];
279 abd_iterate_func(col->rc_abd, 0, col->rc_size,
280 init_rand, NULL);
281 }
282 }
283 }
284
285 void
286 init_zio_abd(zio_t *zio)
287 {
288 abd_iterate_func(zio->io_abd, 0, zio->io_size, init_rand, NULL);
289 }
290
291 static void
292 fini_raidz_map(zio_t **zio, raidz_map_t **rm)
293 {
294 vdev_raidz_map_free(*rm);
295 raidz_free((*zio)->io_abd, (*zio)->io_size);
296 umem_free(*zio, sizeof (zio_t));
297
298 *zio = NULL;
299 *rm = NULL;
300 }
301
302 static int
303 init_raidz_golden_map(raidz_test_opts_t *opts, const int parity)
304 {
305 int err = 0;
306 zio_t *zio_test;
307 raidz_map_t *rm_test;
308 const size_t total_ncols = opts->rto_dcols + parity;
309
310 if (opts->rm_golden) {
311 fini_raidz_map(&opts->zio_golden, &opts->rm_golden);
312 }
313
314 opts->zio_golden = umem_zalloc(sizeof (zio_t), UMEM_NOFAIL);
315 zio_test = umem_zalloc(sizeof (zio_t), UMEM_NOFAIL);
316
317 opts->zio_golden->io_offset = zio_test->io_offset = opts->rto_offset;
318 opts->zio_golden->io_size = zio_test->io_size = opts->rto_dsize;
319
320 opts->zio_golden->io_abd = raidz_alloc(opts->rto_dsize);
321 zio_test->io_abd = raidz_alloc(opts->rto_dsize);
322
323 init_zio_abd(opts->zio_golden);
324 init_zio_abd(zio_test);
325
326 VERIFY0(vdev_raidz_impl_set("original"));
327
328 if (opts->rto_expand) {
329 opts->rm_golden =
330 vdev_raidz_map_alloc_expanded(opts->zio_golden,
331 opts->rto_ashift, total_ncols+1, total_ncols,
332 parity, opts->rto_expand_offset, 0, B_FALSE);
333 rm_test = vdev_raidz_map_alloc_expanded(zio_test,
334 opts->rto_ashift, total_ncols+1, total_ncols,
335 parity, opts->rto_expand_offset, 0, B_FALSE);
336 } else {
337 opts->rm_golden = vdev_raidz_map_alloc(opts->zio_golden,
338 opts->rto_ashift, total_ncols, parity);
339 rm_test = vdev_raidz_map_alloc(zio_test,
340 opts->rto_ashift, total_ncols, parity);
341 }
342
343 VERIFY(opts->zio_golden);
344 VERIFY(opts->rm_golden);
345
346 vdev_raidz_generate_parity(opts->rm_golden);
347 vdev_raidz_generate_parity(rm_test);
348
349 /* sanity check */
350 err |= cmp_data(opts, rm_test);
351 err |= cmp_code(opts, rm_test, parity);
352
353 if (err)
354 ERR("initializing the golden copy ... [FAIL]!\n");
355
356 /* tear down raidz_map of test zio */
357 fini_raidz_map(&zio_test, &rm_test);
358
359 return (err);
360 }
361
362 static raidz_map_t *
363 init_raidz_map(raidz_test_opts_t *opts, zio_t **zio, const int parity)
364 {
365 raidz_map_t *rm = NULL;
366 const size_t alloc_dsize = opts->rto_dsize;
367 const size_t total_ncols = opts->rto_dcols + parity;
368 const int ccols[] = { 0, 1, 2 };
369
370 VERIFY(zio);
371 VERIFY(parity <= 3 && parity >= 1);
372
373 *zio = umem_zalloc(sizeof (zio_t), UMEM_NOFAIL);
374
375 (*zio)->io_offset = 0;
376 (*zio)->io_size = alloc_dsize;
377 (*zio)->io_abd = raidz_alloc(alloc_dsize);
378 init_zio_abd(*zio);
379
380 if (opts->rto_expand) {
381 rm = vdev_raidz_map_alloc_expanded(*zio,
382 opts->rto_ashift, total_ncols+1, total_ncols,
383 parity, opts->rto_expand_offset, 0, B_FALSE);
384 } else {
385 rm = vdev_raidz_map_alloc(*zio, opts->rto_ashift,
386 total_ncols, parity);
387 }
388 VERIFY(rm);
389
390 /* Make sure code columns are destroyed */
391 corrupt_colums(rm, ccols, parity);
392
393 return (rm);
394 }
395
396 static int
397 run_gen_check(raidz_test_opts_t *opts)
398 {
399 char **impl_name;
400 int fn, err = 0;
401 zio_t *zio_test;
402 raidz_map_t *rm_test;
403
404 err = init_raidz_golden_map(opts, PARITY_PQR);
405 if (0 != err)
406 return (err);
407
408 LOG(D_INFO, DBLSEP);
409 LOG(D_INFO, "Testing parity generation...\n");
410
411 for (impl_name = (char **)raidz_impl_names+1; *impl_name != NULL;
412 impl_name++) {
413
414 LOG(D_INFO, SEP);
415 LOG(D_INFO, "\tTesting [%s] implementation...", *impl_name);
416
417 if (0 != vdev_raidz_impl_set(*impl_name)) {
418 LOG(D_INFO, "[SKIP]\n");
419 continue;
420 } else {
421 LOG(D_INFO, "[SUPPORTED]\n");
422 }
423
424 for (fn = 0; fn < RAIDZ_GEN_NUM; fn++) {
425
426 /* Check if should stop */
427 if (rto_opts.rto_should_stop)
428 return (err);
429
430 /* create suitable raidz_map */
431 rm_test = init_raidz_map(opts, &zio_test, fn+1);
432 VERIFY(rm_test);
433
434 LOG(D_INFO, "\t\tTesting method [%s] ...",
435 raidz_gen_name[fn]);
436
437 if (!opts->rto_sanity)
438 vdev_raidz_generate_parity(rm_test);
439
440 if (cmp_code(opts, rm_test, fn+1) != 0) {
441 LOG(D_INFO, "[FAIL]\n");
442 err++;
443 } else
444 LOG(D_INFO, "[PASS]\n");
445
446 fini_raidz_map(&zio_test, &rm_test);
447 }
448 }
449
450 fini_raidz_map(&opts->zio_golden, &opts->rm_golden);
451
452 return (err);
453 }
454
455 static int
456 run_rec_check_impl(raidz_test_opts_t *opts, raidz_map_t *rm, const int fn)
457 {
458 int x0, x1, x2;
459 int tgtidx[3];
460 int err = 0;
461 static const int rec_tgts[7][3] = {
462 {1, 2, 3}, /* rec_p: bad QR & D[0] */
463 {0, 2, 3}, /* rec_q: bad PR & D[0] */
464 {0, 1, 3}, /* rec_r: bad PQ & D[0] */
465 {2, 3, 4}, /* rec_pq: bad R & D[0][1] */
466 {1, 3, 4}, /* rec_pr: bad Q & D[0][1] */
467 {0, 3, 4}, /* rec_qr: bad P & D[0][1] */
468 {3, 4, 5} /* rec_pqr: bad & D[0][1][2] */
469 };
470
471 memcpy(tgtidx, rec_tgts[fn], sizeof (tgtidx));
472
473 if (fn < RAIDZ_REC_PQ) {
474 /* can reconstruct 1 failed data disk */
475 for (x0 = 0; x0 < opts->rto_dcols; x0++) {
476 if (x0 >= rm->rm_row[0]->rr_cols - raidz_parity(rm))
477 continue;
478
479 /* Check if should stop */
480 if (rto_opts.rto_should_stop)
481 return (err);
482
483 LOG(D_DEBUG, "[%d] ", x0);
484
485 tgtidx[2] = x0 + raidz_parity(rm);
486
487 corrupt_colums(rm, tgtidx+2, 1);
488
489 if (!opts->rto_sanity)
490 vdev_raidz_reconstruct(rm, tgtidx, 3);
491
492 if (cmp_data(opts, rm) != 0) {
493 err++;
494 LOG(D_DEBUG, "\nREC D[%d]... [FAIL]\n", x0);
495 }
496 }
497
498 } else if (fn < RAIDZ_REC_PQR) {
499 /* can reconstruct 2 failed data disk */
500 for (x0 = 0; x0 < opts->rto_dcols; x0++) {
501 if (x0 >= rm->rm_row[0]->rr_cols - raidz_parity(rm))
502 continue;
503 for (x1 = x0 + 1; x1 < opts->rto_dcols; x1++) {
504 if (x1 >= rm->rm_row[0]->rr_cols -
505 raidz_parity(rm))
506 continue;
507
508 /* Check if should stop */
509 if (rto_opts.rto_should_stop)
510 return (err);
511
512 LOG(D_DEBUG, "[%d %d] ", x0, x1);
513
514 tgtidx[1] = x0 + raidz_parity(rm);
515 tgtidx[2] = x1 + raidz_parity(rm);
516
517 corrupt_colums(rm, tgtidx+1, 2);
518
519 if (!opts->rto_sanity)
520 vdev_raidz_reconstruct(rm, tgtidx, 3);
521
522 if (cmp_data(opts, rm) != 0) {
523 err++;
524 LOG(D_DEBUG, "\nREC D[%d %d]... "
525 "[FAIL]\n", x0, x1);
526 }
527 }
528 }
529 } else {
530 /* can reconstruct 3 failed data disk */
531 for (x0 = 0; x0 < opts->rto_dcols; x0++) {
532 if (x0 >= rm->rm_row[0]->rr_cols - raidz_parity(rm))
533 continue;
534 for (x1 = x0 + 1; x1 < opts->rto_dcols; x1++) {
535 if (x1 >= rm->rm_row[0]->rr_cols -
536 raidz_parity(rm))
537 continue;
538 for (x2 = x1 + 1; x2 < opts->rto_dcols; x2++) {
539 if (x2 >= rm->rm_row[0]->rr_cols -
540 raidz_parity(rm))
541 continue;
542
543 /* Check if should stop */
544 if (rto_opts.rto_should_stop)
545 return (err);
546
547 LOG(D_DEBUG, "[%d %d %d]", x0, x1, x2);
548
549 tgtidx[0] = x0 + raidz_parity(rm);
550 tgtidx[1] = x1 + raidz_parity(rm);
551 tgtidx[2] = x2 + raidz_parity(rm);
552
553 corrupt_colums(rm, tgtidx, 3);
554
555 if (!opts->rto_sanity)
556 vdev_raidz_reconstruct(rm,
557 tgtidx, 3);
558
559 if (cmp_data(opts, rm) != 0) {
560 err++;
561 LOG(D_DEBUG,
562 "\nREC D[%d %d %d]... "
563 "[FAIL]\n", x0, x1, x2);
564 }
565 }
566 }
567 }
568 }
569 return (err);
570 }
571
572 static int
573 run_rec_check(raidz_test_opts_t *opts)
574 {
575 char **impl_name;
576 unsigned fn, err = 0;
577 zio_t *zio_test;
578 raidz_map_t *rm_test;
579
580 err = init_raidz_golden_map(opts, PARITY_PQR);
581 if (0 != err)
582 return (err);
583
584 LOG(D_INFO, DBLSEP);
585 LOG(D_INFO, "Testing data reconstruction...\n");
586
587 for (impl_name = (char **)raidz_impl_names+1; *impl_name != NULL;
588 impl_name++) {
589
590 LOG(D_INFO, SEP);
591 LOG(D_INFO, "\tTesting [%s] implementation...", *impl_name);
592
593 if (vdev_raidz_impl_set(*impl_name) != 0) {
594 LOG(D_INFO, "[SKIP]\n");
595 continue;
596 } else
597 LOG(D_INFO, "[SUPPORTED]\n");
598
599
600 /* create suitable raidz_map */
601 rm_test = init_raidz_map(opts, &zio_test, PARITY_PQR);
602 /* generate parity */
603 vdev_raidz_generate_parity(rm_test);
604
605 for (fn = 0; fn < RAIDZ_REC_NUM; fn++) {
606
607 LOG(D_INFO, "\t\tTesting method [%s] ...",
608 raidz_rec_name[fn]);
609
610 if (run_rec_check_impl(opts, rm_test, fn) != 0) {
611 LOG(D_INFO, "[FAIL]\n");
612 err++;
613
614 } else
615 LOG(D_INFO, "[PASS]\n");
616
617 }
618 /* tear down test raidz_map */
619 fini_raidz_map(&zio_test, &rm_test);
620 }
621
622 fini_raidz_map(&opts->zio_golden, &opts->rm_golden);
623
624 return (err);
625 }
626
627 static int
628 run_test(raidz_test_opts_t *opts)
629 {
630 int err = 0;
631
632 if (opts == NULL)
633 opts = &rto_opts;
634
635 print_opts(opts, B_FALSE);
636
637 err |= run_gen_check(opts);
638 err |= run_rec_check(opts);
639
640 return (err);
641 }
642
643 #define SWEEP_RUNNING 0
644 #define SWEEP_FINISHED 1
645 #define SWEEP_ERROR 2
646 #define SWEEP_TIMEOUT 3
647
648 static int sweep_state = 0;
649 static raidz_test_opts_t failed_opts;
650
651 static kmutex_t sem_mtx;
652 static kcondvar_t sem_cv;
653 static int max_free_slots;
654 static int free_slots;
655
656 static __attribute__((noreturn)) void
657 sweep_thread(void *arg)
658 {
659 int err = 0;
660 raidz_test_opts_t *opts = (raidz_test_opts_t *)arg;
661 VERIFY(opts != NULL);
662
663 err = run_test(opts);
664
665 if (rto_opts.rto_sanity) {
666 /* 25% chance that a sweep test fails */
667 if (rand() < (RAND_MAX/4))
668 err = 1;
669 }
670
671 if (0 != err) {
672 mutex_enter(&sem_mtx);
673 memcpy(&failed_opts, opts, sizeof (raidz_test_opts_t));
674 sweep_state = SWEEP_ERROR;
675 mutex_exit(&sem_mtx);
676 }
677
678 umem_free(opts, sizeof (raidz_test_opts_t));
679
680 /* signal the next thread */
681 mutex_enter(&sem_mtx);
682 free_slots++;
683 cv_signal(&sem_cv);
684 mutex_exit(&sem_mtx);
685
686 thread_exit();
687 }
688
689 static int
690 run_sweep(void)
691 {
692 static const size_t dcols_v[] = { 1, 2, 3, 4, 5, 6, 7, 8, 12, 15, 16 };
693 static const size_t ashift_v[] = { 9, 12, 14 };
694 static const size_t size_v[] = { 1 << 9, 21 * (1 << 9), 13 * (1 << 12),
695 1 << 17, (1 << 20) - (1 << 12), SPA_MAXBLOCKSIZE };
696
697 (void) setvbuf(stdout, NULL, _IONBF, 0);
698
699 ulong_t total_comb = ARRAY_SIZE(size_v) * ARRAY_SIZE(ashift_v) *
700 ARRAY_SIZE(dcols_v);
701 ulong_t tried_comb = 0;
702 hrtime_t time_diff, start_time = gethrtime();
703 raidz_test_opts_t *opts;
704 int a, d, s;
705
706 max_free_slots = free_slots = MAX(2, boot_ncpus);
707
708 mutex_init(&sem_mtx, NULL, MUTEX_DEFAULT, NULL);
709 cv_init(&sem_cv, NULL, CV_DEFAULT, NULL);
710
711 for (s = 0; s < ARRAY_SIZE(size_v); s++)
712 for (a = 0; a < ARRAY_SIZE(ashift_v); a++)
713 for (d = 0; d < ARRAY_SIZE(dcols_v); d++) {
714
715 if (size_v[s] < (1 << ashift_v[a])) {
716 total_comb--;
717 continue;
718 }
719
720 if (++tried_comb % 20 == 0)
721 LOG(D_ALL, "%lu/%lu... ", tried_comb, total_comb);
722
723 /* wait for signal to start new thread */
724 mutex_enter(&sem_mtx);
725 while (cv_timedwait_sig(&sem_cv, &sem_mtx,
726 ddi_get_lbolt() + hz)) {
727
728 /* check if should stop the test (timeout) */
729 time_diff = (gethrtime() - start_time) / NANOSEC;
730 if (rto_opts.rto_sweep_timeout > 0 &&
731 time_diff >= rto_opts.rto_sweep_timeout) {
732 sweep_state = SWEEP_TIMEOUT;
733 rto_opts.rto_should_stop = B_TRUE;
734 mutex_exit(&sem_mtx);
735 goto exit;
736 }
737
738 /* check if should stop the test (error) */
739 if (sweep_state != SWEEP_RUNNING) {
740 mutex_exit(&sem_mtx);
741 goto exit;
742 }
743
744 /* exit loop if a slot is available */
745 if (free_slots > 0) {
746 break;
747 }
748 }
749
750 free_slots--;
751 mutex_exit(&sem_mtx);
752
753 opts = umem_zalloc(sizeof (raidz_test_opts_t), UMEM_NOFAIL);
754 opts->rto_ashift = ashift_v[a];
755 opts->rto_dcols = dcols_v[d];
756 opts->rto_offset = (1ULL << ashift_v[a]) * rand();
757 opts->rto_dsize = size_v[s];
758 opts->rto_expand = rto_opts.rto_expand;
759 opts->rto_expand_offset = rto_opts.rto_expand_offset;
760 opts->rto_v = 0; /* be quiet */
761
762 VERIFY3P(thread_create(NULL, 0, sweep_thread, (void *) opts,
763 0, NULL, TS_RUN, defclsyspri), !=, NULL);
764 }
765
766 exit:
767 LOG(D_ALL, "\nWaiting for test threads to finish...\n");
768 mutex_enter(&sem_mtx);
769 VERIFY(free_slots <= max_free_slots);
770 while (free_slots < max_free_slots) {
771 (void) cv_wait(&sem_cv, &sem_mtx);
772 }
773 mutex_exit(&sem_mtx);
774
775 if (sweep_state == SWEEP_ERROR) {
776 ERR("Sweep test failed! Failed option: \n");
777 print_opts(&failed_opts, B_TRUE);
778 } else {
779 if (sweep_state == SWEEP_TIMEOUT)
780 LOG(D_ALL, "Test timeout (%lus). Stopping...\n",
781 (ulong_t)rto_opts.rto_sweep_timeout);
782
783 LOG(D_ALL, "Sweep test succeeded on %lu raidz maps!\n",
784 (ulong_t)tried_comb);
785 }
786
787 mutex_destroy(&sem_mtx);
788
789 return (sweep_state == SWEEP_ERROR ? SWEEP_ERROR : 0);
790 }
791
792
793 int
794 main(int argc, char **argv)
795 {
796 size_t i;
797 struct sigaction action;
798 int err = 0;
799
800 /* init gdb pid string early */
801 (void) sprintf(pid_s, "%d", getpid());
802
803 action.sa_handler = sig_handler;
804 sigemptyset(&action.sa_mask);
805 action.sa_flags = 0;
806
807 if (sigaction(SIGSEGV, &action, NULL) < 0) {
808 ERR("raidz_test: cannot catch SIGSEGV: %s.\n", strerror(errno));
809 exit(EXIT_FAILURE);
810 }
811
812 (void) setvbuf(stdout, NULL, _IOLBF, 0);
813
814 dprintf_setup(&argc, argv);
815
816 process_options(argc, argv);
817
818 kernel_init(SPA_MODE_READ);
819
820 /* setup random data because rand() is not reentrant */
821 rand_data = (int *)umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
822 srand((unsigned)time(NULL) * getpid());
823 for (i = 0; i < SPA_MAXBLOCKSIZE / sizeof (int); i++)
824 rand_data[i] = rand();
825
826 mprotect(rand_data, SPA_MAXBLOCKSIZE, PROT_READ);
827
828 if (rto_opts.rto_benchmark) {
829 run_raidz_benchmark();
830 } else if (rto_opts.rto_sweep) {
831 err = run_sweep();
832 } else {
833 err = run_test(NULL);
834 }
835
836 umem_free(rand_data, SPA_MAXBLOCKSIZE);
837 kernel_fini();
838
839 return (err);
840 }
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