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Adds check for numberio during verify phase.
[fio.git] / verify.c
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CommitLineData
1/*
2 * IO verification helpers
3 */
4#include <unistd.h>
5#include <fcntl.h>
6#include <string.h>
7#include <assert.h>
8#include <pthread.h>
9#include <libgen.h>
10
11#include "fio.h"
12#include "verify.h"
13#include "trim.h"
14#include "lib/rand.h"
15#include "lib/hweight.h"
16
17#include "crc/md5.h"
18#include "crc/crc64.h"
19#include "crc/crc32.h"
20#include "crc/crc32c.h"
21#include "crc/crc16.h"
22#include "crc/crc7.h"
23#include "crc/sha256.h"
24#include "crc/sha512.h"
25#include "crc/sha1.h"
26
27static void populate_hdr(struct thread_data *td, struct io_u *io_u,
28 struct verify_header *hdr, unsigned int header_num,
29 unsigned int header_len);
30
31static void fill_pattern(struct thread_data *td, void *p, unsigned int len,
32 char *pattern, unsigned int pattern_bytes)
33{
34 switch (pattern_bytes) {
35 case 0:
36 assert(0);
37 break;
38 case 1:
39 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
40 memset(p, pattern[0], len);
41 break;
42 default: {
43 unsigned int i = 0, size = 0;
44 unsigned char *b = p;
45
46 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
47 pattern_bytes, len);
48
49 while (i < len) {
50 size = pattern_bytes;
51 if (size > (len - i))
52 size = len - i;
53 memcpy(b+i, pattern, size);
54 i += size;
55 }
56 break;
57 }
58 }
59}
60
61void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
62{
63 fill_pattern(td, p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes);
64}
65
66void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
67 struct io_u *io_u, unsigned long seed, int use_seed)
68{
69 if (!td->o.verify_pattern_bytes) {
70 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
71
72 if (use_seed)
73 __fill_random_buf(p, len, seed);
74 else
75 io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);
76 return;
77 }
78
79 if (io_u->buf_filled_len >= len) {
80 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
81 td->o.verify_pattern_bytes, len);
82 return;
83 }
84
85 fill_pattern(td, p, len, td->o.verify_pattern, td->o.verify_pattern_bytes);
86
87 io_u->buf_filled_len = len;
88}
89
90static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
91{
92 unsigned int hdr_inc;
93
94 hdr_inc = io_u->buflen;
95 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
96 hdr_inc = td->o.verify_interval;
97
98 return hdr_inc;
99}
100
101static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
102 unsigned long seed, int use_seed)
103{
104 unsigned int hdr_inc, header_num;
105 struct verify_header *hdr;
106 void *p = io_u->buf;
107
108 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
109
110 hdr_inc = get_hdr_inc(td, io_u);
111 header_num = 0;
112 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
113 hdr = p;
114 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
115 header_num++;
116 }
117}
118
119static void memswp(void *buf1, void *buf2, unsigned int len)
120{
121 char swap[200];
122
123 assert(len <= sizeof(swap));
124
125 memcpy(&swap, buf1, len);
126 memcpy(buf1, buf2, len);
127 memcpy(buf2, &swap, len);
128}
129
130static void hexdump(void *buffer, int len)
131{
132 unsigned char *p = buffer;
133 int i;
134
135 for (i = 0; i < len; i++)
136 log_err("%02x", p[i]);
137 log_err("\n");
138}
139
140/*
141 * Prepare for separation of verify_header and checksum header
142 */
143static inline unsigned int __hdr_size(int verify_type)
144{
145 unsigned int len = 0;
146
147 switch (verify_type) {
148 case VERIFY_NONE:
149 case VERIFY_NULL:
150 len = 0;
151 break;
152 case VERIFY_MD5:
153 len = sizeof(struct vhdr_md5);
154 break;
155 case VERIFY_CRC64:
156 len = sizeof(struct vhdr_crc64);
157 break;
158 case VERIFY_CRC32C:
159 case VERIFY_CRC32:
160 case VERIFY_CRC32C_INTEL:
161 len = sizeof(struct vhdr_crc32);
162 break;
163 case VERIFY_CRC16:
164 len = sizeof(struct vhdr_crc16);
165 break;
166 case VERIFY_CRC7:
167 len = sizeof(struct vhdr_crc7);
168 break;
169 case VERIFY_SHA256:
170 len = sizeof(struct vhdr_sha256);
171 break;
172 case VERIFY_SHA512:
173 len = sizeof(struct vhdr_sha512);
174 break;
175 case VERIFY_META:
176 len = sizeof(struct vhdr_meta);
177 break;
178 case VERIFY_SHA1:
179 len = sizeof(struct vhdr_sha1);
180 break;
181 case VERIFY_PATTERN:
182 len = 0;
183 break;
184 default:
185 log_err("fio: unknown verify header!\n");
186 assert(0);
187 }
188
189 return len + sizeof(struct verify_header);
190}
191
192static inline unsigned int hdr_size(struct verify_header *hdr)
193{
194 return __hdr_size(hdr->verify_type);
195}
196
197static void *hdr_priv(struct verify_header *hdr)
198{
199 void *priv = hdr;
200
201 return priv + sizeof(struct verify_header);
202}
203
204/*
205 * Verify container, pass info to verify handlers and allow them to
206 * pass info back in case of error
207 */
208struct vcont {
209 /*
210 * Input
211 */
212 struct io_u *io_u;
213 unsigned int hdr_num;
214 struct thread_data *td;
215
216 /*
217 * Output, only valid in case of error
218 */
219 const char *name;
220 void *good_crc;
221 void *bad_crc;
222 unsigned int crc_len;
223};
224
225static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
226 const char *type, struct fio_file *f)
227{
228 char *ptr, fname[256];
229 int ret, fd;
230
231 ptr = strdup(f->file_name);
232 strcpy(fname, basename(ptr));
233
234 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
235
236 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
237 if (fd < 0) {
238 perror("open verify buf file");
239 return;
240 }
241
242 while (len) {
243 ret = write(fd, buf, len);
244 if (!ret)
245 break;
246 else if (ret < 0) {
247 perror("write verify buf file");
248 break;
249 }
250 len -= ret;
251 buf += ret;
252 }
253
254 close(fd);
255 log_err(" %s data dumped as %s\n", type, fname);
256 free(ptr);
257}
258
259/*
260 * Dump the contents of the read block and re-generate the correct data
261 * and dump that too.
262 */
263static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
264{
265 struct thread_data *td = vc->td;
266 struct io_u *io_u = vc->io_u;
267 unsigned long hdr_offset;
268 struct io_u dummy;
269 void *buf;
270
271 if (!td->o.verify_dump)
272 return;
273
274 /*
275 * Dump the contents we just read off disk
276 */
277 hdr_offset = vc->hdr_num * hdr->len;
278
279 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
280 "received", vc->io_u->file);
281
282 /*
283 * Allocate a new buf and re-generate the original data
284 */
285 buf = malloc(io_u->buflen);
286 dummy = *io_u;
287 dummy.buf = buf;
288 dummy.rand_seed = hdr->rand_seed;
289 dummy.buf_filled_len = 0;
290 dummy.buflen = io_u->buflen;
291
292 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
293
294 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
295 "expected", vc->io_u->file);
296 free(buf);
297}
298
299static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
300{
301 unsigned long long offset;
302
303 offset = vc->io_u->offset;
304 offset += vc->hdr_num * hdr->len;
305 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
306 vc->name, vc->io_u->file->file_name, offset, hdr->len);
307
308 if (vc->good_crc && vc->bad_crc) {
309 log_err(" Expected CRC: ");
310 hexdump(vc->good_crc, vc->crc_len);
311 log_err(" Received CRC: ");
312 hexdump(vc->bad_crc, vc->crc_len);
313 }
314
315 dump_verify_buffers(hdr, vc);
316}
317
318/*
319 * Return data area 'header_num'
320 */
321static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
322{
323 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
324}
325
326static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
327{
328 struct thread_data *td = vc->td;
329 struct io_u *io_u = vc->io_u;
330 char *buf, *pattern;
331 unsigned int header_size = __hdr_size(td->o.verify);
332 unsigned int len, mod, i, size, pattern_size;
333
334 pattern = td->o.verify_pattern;
335 pattern_size = td->o.verify_pattern_bytes;
336 if (pattern_size <= 1)
337 pattern_size = MAX_PATTERN_SIZE;
338 buf = (void *) hdr + header_size;
339 len = get_hdr_inc(td, io_u) - header_size;
340 mod = header_size % pattern_size;
341
342 for (i = 0; i < len; i += size) {
343 size = pattern_size - mod;
344 if (size > (len - i))
345 size = len - i;
346 if (memcmp(buf + i, pattern + mod, size))
347 /* Let the slow compare find the first mismatch byte. */
348 break;
349 mod = 0;
350 }
351
352 for (; i < len; i++) {
353 if (buf[i] != pattern[mod]) {
354 unsigned int bits;
355
356 bits = hweight8(buf[i] ^ pattern[mod]);
357 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
358 buf[i], pattern[mod], bits);
359 log_err("fio: bad pattern block offset %u\n", i);
360 dump_verify_buffers(hdr, vc);
361 return EILSEQ;
362 }
363 mod++;
364 if (mod == td->o.verify_pattern_bytes)
365 mod = 0;
366 }
367
368 return 0;
369}
370
371static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
372{
373 struct thread_data *td = vc->td;
374 struct vhdr_meta *vh = hdr_priv(hdr);
375 struct io_u *io_u = vc->io_u;
376 int ret = EILSEQ;
377
378 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
379
380 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
381 ret = 0;
382
383 if (td->o.verify_pattern_bytes)
384 ret |= verify_io_u_pattern(hdr, vc);
385
386 /*
387 * For read-only workloads, the program cannot be certain of the
388 * last numberio written to a block. Checking of numberio will be done
389 * only for workloads that write data.
390 */
391 if (td_write(td) || td_rw(td))
392 if (vh->numberio != io_u->numberio)
393 ret = EILSEQ;
394
395 if (!ret)
396 return 0;
397
398 vc->name = "meta";
399 log_verify_failure(hdr, vc);
400 return ret;
401}
402
403static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
404{
405 void *p = io_u_verify_off(hdr, vc);
406 struct vhdr_sha512 *vh = hdr_priv(hdr);
407 uint8_t sha512[128];
408 struct fio_sha512_ctx sha512_ctx = {
409 .buf = sha512,
410 };
411
412 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
413
414 fio_sha512_init(&sha512_ctx);
415 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
416
417 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
418 return 0;
419
420 vc->name = "sha512";
421 vc->good_crc = vh->sha512;
422 vc->bad_crc = sha512_ctx.buf;
423 vc->crc_len = sizeof(vh->sha512);
424 log_verify_failure(hdr, vc);
425 return EILSEQ;
426}
427
428static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
429{
430 void *p = io_u_verify_off(hdr, vc);
431 struct vhdr_sha256 *vh = hdr_priv(hdr);
432 uint8_t sha256[64];
433 struct fio_sha256_ctx sha256_ctx = {
434 .buf = sha256,
435 };
436
437 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
438
439 fio_sha256_init(&sha256_ctx);
440 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
441
442 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
443 return 0;
444
445 vc->name = "sha256";
446 vc->good_crc = vh->sha256;
447 vc->bad_crc = sha256_ctx.buf;
448 vc->crc_len = sizeof(vh->sha256);
449 log_verify_failure(hdr, vc);
450 return EILSEQ;
451}
452
453static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
454{
455 void *p = io_u_verify_off(hdr, vc);
456 struct vhdr_sha1 *vh = hdr_priv(hdr);
457 uint32_t sha1[5];
458 struct fio_sha1_ctx sha1_ctx = {
459 .H = sha1,
460 };
461
462 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
463
464 fio_sha1_init(&sha1_ctx);
465 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
466
467 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
468 return 0;
469
470 vc->name = "sha1";
471 vc->good_crc = vh->sha1;
472 vc->bad_crc = sha1_ctx.H;
473 vc->crc_len = sizeof(vh->sha1);
474 log_verify_failure(hdr, vc);
475 return EILSEQ;
476}
477
478static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
479{
480 void *p = io_u_verify_off(hdr, vc);
481 struct vhdr_crc7 *vh = hdr_priv(hdr);
482 unsigned char c;
483
484 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
485
486 c = fio_crc7(p, hdr->len - hdr_size(hdr));
487
488 if (c == vh->crc7)
489 return 0;
490
491 vc->name = "crc7";
492 vc->good_crc = &vh->crc7;
493 vc->bad_crc = &c;
494 vc->crc_len = 1;
495 log_verify_failure(hdr, vc);
496 return EILSEQ;
497}
498
499static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
500{
501 void *p = io_u_verify_off(hdr, vc);
502 struct vhdr_crc16 *vh = hdr_priv(hdr);
503 unsigned short c;
504
505 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
506
507 c = fio_crc16(p, hdr->len - hdr_size(hdr));
508
509 if (c == vh->crc16)
510 return 0;
511
512 vc->name = "crc16";
513 vc->good_crc = &vh->crc16;
514 vc->bad_crc = &c;
515 vc->crc_len = 2;
516 log_verify_failure(hdr, vc);
517 return EILSEQ;
518}
519
520static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
521{
522 void *p = io_u_verify_off(hdr, vc);
523 struct vhdr_crc64 *vh = hdr_priv(hdr);
524 unsigned long long c;
525
526 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
527
528 c = fio_crc64(p, hdr->len - hdr_size(hdr));
529
530 if (c == vh->crc64)
531 return 0;
532
533 vc->name = "crc64";
534 vc->good_crc = &vh->crc64;
535 vc->bad_crc = &c;
536 vc->crc_len = 8;
537 log_verify_failure(hdr, vc);
538 return EILSEQ;
539}
540
541static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
542{
543 void *p = io_u_verify_off(hdr, vc);
544 struct vhdr_crc32 *vh = hdr_priv(hdr);
545 uint32_t c;
546
547 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
548
549 c = fio_crc32(p, hdr->len - hdr_size(hdr));
550
551 if (c == vh->crc32)
552 return 0;
553
554 vc->name = "crc32";
555 vc->good_crc = &vh->crc32;
556 vc->bad_crc = &c;
557 vc->crc_len = 4;
558 log_verify_failure(hdr, vc);
559 return EILSEQ;
560}
561
562static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
563{
564 void *p = io_u_verify_off(hdr, vc);
565 struct vhdr_crc32 *vh = hdr_priv(hdr);
566 uint32_t c;
567
568 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
569
570 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
571
572 if (c == vh->crc32)
573 return 0;
574
575 vc->name = "crc32c";
576 vc->good_crc = &vh->crc32;
577 vc->bad_crc = &c;
578 vc->crc_len = 4;
579 log_verify_failure(hdr, vc);
580 return EILSEQ;
581}
582
583static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
584{
585 void *p = io_u_verify_off(hdr, vc);
586 struct vhdr_md5 *vh = hdr_priv(hdr);
587 uint32_t hash[MD5_HASH_WORDS];
588 struct fio_md5_ctx md5_ctx = {
589 .hash = hash,
590 };
591
592 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
593
594 fio_md5_init(&md5_ctx);
595 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
596
597 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
598 return 0;
599
600 vc->name = "md5";
601 vc->good_crc = vh->md5_digest;
602 vc->bad_crc = md5_ctx.hash;
603 vc->crc_len = sizeof(hash);
604 log_verify_failure(hdr, vc);
605 return EILSEQ;
606}
607
608/*
609 * Push IO verification to a separate thread
610 */
611int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
612{
613 if (io_u->file)
614 put_file_log(td, io_u->file);
615
616 pthread_mutex_lock(&td->io_u_lock);
617
618 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
619 td->cur_depth--;
620 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
621 }
622 flist_add_tail(&io_u->verify_list, &td->verify_list);
623 io_u->flags |= IO_U_F_FREE_DEF;
624 pthread_mutex_unlock(&td->io_u_lock);
625
626 pthread_cond_signal(&td->verify_cond);
627 return 0;
628}
629
630static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
631{
632 static char zero_buf[1024];
633 unsigned int this_len, len;
634 int ret = 0;
635 void *p;
636
637 if (!td->o.trim_zero)
638 return 0;
639
640 len = io_u->buflen;
641 p = io_u->buf;
642 do {
643 this_len = sizeof(zero_buf);
644 if (this_len > len)
645 this_len = len;
646 if (memcmp(p, zero_buf, this_len)) {
647 ret = EILSEQ;
648 break;
649 }
650 len -= this_len;
651 p += this_len;
652 } while (len);
653
654 if (!ret)
655 return 0;
656
657 log_err("trim: verify failed at file %s offset %llu, length %lu"
658 ", block offset %lu\n",
659 io_u->file->file_name, io_u->offset, io_u->buflen,
660 (unsigned long) (p - io_u->buf));
661 return ret;
662}
663
664static int verify_header(struct io_u *io_u, struct verify_header *hdr)
665{
666 void *p = hdr;
667 uint32_t crc;
668
669 if (hdr->magic != FIO_HDR_MAGIC)
670 return 0;
671 if (hdr->len > io_u->buflen) {
672 log_err("fio: verify header exceeds buffer length (%u > %lu)\n", hdr->len, io_u->buflen);
673 return 0;
674 }
675
676 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
677 if (crc == hdr->crc32)
678 return 1;
679
680 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
681 return 0;
682}
683
684int verify_io_u(struct thread_data *td, struct io_u *io_u)
685{
686 struct verify_header *hdr;
687 unsigned int header_size, hdr_inc, hdr_num = 0;
688 void *p;
689 int ret;
690
691 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
692 return 0;
693 if (io_u->flags & IO_U_F_TRIMMED) {
694 ret = verify_trimmed_io_u(td, io_u);
695 goto done;
696 }
697
698 hdr_inc = get_hdr_inc(td, io_u);
699
700 ret = 0;
701 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
702 p += hdr_inc, hdr_num++) {
703 struct vcont vc = {
704 .io_u = io_u,
705 .hdr_num = hdr_num,
706 .td = td,
707 };
708 unsigned int verify_type;
709
710 if (ret && td->o.verify_fatal)
711 break;
712
713 header_size = __hdr_size(td->o.verify);
714 if (td->o.verify_offset)
715 memswp(p, p + td->o.verify_offset, header_size);
716 hdr = p;
717
718 if (!verify_header(io_u, hdr)) {
719 log_err("verify: bad magic header %x, wanted %x at "
720 "file %s offset %llu, length %u\n",
721 hdr->magic, FIO_HDR_MAGIC,
722 io_u->file->file_name,
723 io_u->offset + hdr_num * hdr->len, hdr->len);
724 return EILSEQ;
725 }
726
727 if (td->o.verify != VERIFY_NONE)
728 verify_type = td->o.verify;
729 else
730 verify_type = hdr->verify_type;
731
732 switch (verify_type) {
733 case VERIFY_MD5:
734 ret = verify_io_u_md5(hdr, &vc);
735 break;
736 case VERIFY_CRC64:
737 ret = verify_io_u_crc64(hdr, &vc);
738 break;
739 case VERIFY_CRC32C:
740 case VERIFY_CRC32C_INTEL:
741 ret = verify_io_u_crc32c(hdr, &vc);
742 break;
743 case VERIFY_CRC32:
744 ret = verify_io_u_crc32(hdr, &vc);
745 break;
746 case VERIFY_CRC16:
747 ret = verify_io_u_crc16(hdr, &vc);
748 break;
749 case VERIFY_CRC7:
750 ret = verify_io_u_crc7(hdr, &vc);
751 break;
752 case VERIFY_SHA256:
753 ret = verify_io_u_sha256(hdr, &vc);
754 break;
755 case VERIFY_SHA512:
756 ret = verify_io_u_sha512(hdr, &vc);
757 break;
758 case VERIFY_META:
759 ret = verify_io_u_meta(hdr, &vc);
760 break;
761 case VERIFY_SHA1:
762 ret = verify_io_u_sha1(hdr, &vc);
763 break;
764 case VERIFY_PATTERN:
765 ret = verify_io_u_pattern(hdr, &vc);
766 break;
767 default:
768 log_err("Bad verify type %u\n", hdr->verify_type);
769 ret = EINVAL;
770 }
771
772 if (ret && verify_type != hdr->verify_type)
773 log_err("fio: verify type mismatch (%u media, %u given)\n",
774 hdr->verify_type, verify_type);
775 }
776
777done:
778 if (ret && td->o.verify_fatal)
779 td->terminate = 1;
780
781 return ret;
782}
783
784static void fill_meta(struct verify_header *hdr, struct thread_data *td,
785 struct io_u *io_u, unsigned int header_num)
786{
787 struct vhdr_meta *vh = hdr_priv(hdr);
788
789 vh->thread = td->thread_number;
790
791 vh->time_sec = io_u->start_time.tv_sec;
792 vh->time_usec = io_u->start_time.tv_usec;
793
794 vh->numberio = io_u->numberio;
795
796 vh->offset = io_u->offset + header_num * td->o.verify_interval;
797}
798
799static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
800{
801 struct vhdr_sha512 *vh = hdr_priv(hdr);
802 struct fio_sha512_ctx sha512_ctx = {
803 .buf = vh->sha512,
804 };
805
806 fio_sha512_init(&sha512_ctx);
807 fio_sha512_update(&sha512_ctx, p, len);
808}
809
810static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
811{
812 struct vhdr_sha256 *vh = hdr_priv(hdr);
813 struct fio_sha256_ctx sha256_ctx = {
814 .buf = vh->sha256,
815 };
816
817 fio_sha256_init(&sha256_ctx);
818 fio_sha256_update(&sha256_ctx, p, len);
819}
820
821static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
822{
823 struct vhdr_sha1 *vh = hdr_priv(hdr);
824 struct fio_sha1_ctx sha1_ctx = {
825 .H = vh->sha1,
826 };
827
828 fio_sha1_init(&sha1_ctx);
829 fio_sha1_update(&sha1_ctx, p, len);
830}
831
832static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
833{
834 struct vhdr_crc7 *vh = hdr_priv(hdr);
835
836 vh->crc7 = fio_crc7(p, len);
837}
838
839static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
840{
841 struct vhdr_crc16 *vh = hdr_priv(hdr);
842
843 vh->crc16 = fio_crc16(p, len);
844}
845
846static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
847{
848 struct vhdr_crc32 *vh = hdr_priv(hdr);
849
850 vh->crc32 = fio_crc32(p, len);
851}
852
853static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
854{
855 struct vhdr_crc32 *vh = hdr_priv(hdr);
856
857 vh->crc32 = fio_crc32c(p, len);
858}
859
860static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
861{
862 struct vhdr_crc64 *vh = hdr_priv(hdr);
863
864 vh->crc64 = fio_crc64(p, len);
865}
866
867static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
868{
869 struct vhdr_md5 *vh = hdr_priv(hdr);
870 struct fio_md5_ctx md5_ctx = {
871 .hash = (uint32_t *) vh->md5_digest,
872 };
873
874 fio_md5_init(&md5_ctx);
875 fio_md5_update(&md5_ctx, p, len);
876}
877
878static void populate_hdr(struct thread_data *td, struct io_u *io_u,
879 struct verify_header *hdr, unsigned int header_num,
880 unsigned int header_len)
881{
882 unsigned int data_len;
883 void *data, *p;
884
885 p = (void *) hdr;
886
887 hdr->magic = FIO_HDR_MAGIC;
888 hdr->verify_type = td->o.verify;
889 hdr->len = header_len;
890 hdr->rand_seed = io_u->rand_seed;
891 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
892
893 data_len = header_len - hdr_size(hdr);
894
895 data = p + hdr_size(hdr);
896 switch (td->o.verify) {
897 case VERIFY_MD5:
898 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
899 io_u, hdr->len);
900 fill_md5(hdr, data, data_len);
901 break;
902 case VERIFY_CRC64:
903 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
904 io_u, hdr->len);
905 fill_crc64(hdr, data, data_len);
906 break;
907 case VERIFY_CRC32C:
908 case VERIFY_CRC32C_INTEL:
909 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
910 io_u, hdr->len);
911 fill_crc32c(hdr, data, data_len);
912 break;
913 case VERIFY_CRC32:
914 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
915 io_u, hdr->len);
916 fill_crc32(hdr, data, data_len);
917 break;
918 case VERIFY_CRC16:
919 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
920 io_u, hdr->len);
921 fill_crc16(hdr, data, data_len);
922 break;
923 case VERIFY_CRC7:
924 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
925 io_u, hdr->len);
926 fill_crc7(hdr, data, data_len);
927 break;
928 case VERIFY_SHA256:
929 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
930 io_u, hdr->len);
931 fill_sha256(hdr, data, data_len);
932 break;
933 case VERIFY_SHA512:
934 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
935 io_u, hdr->len);
936 fill_sha512(hdr, data, data_len);
937 break;
938 case VERIFY_META:
939 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
940 io_u, hdr->len);
941 fill_meta(hdr, td, io_u, header_num);
942 break;
943 case VERIFY_SHA1:
944 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
945 io_u, hdr->len);
946 fill_sha1(hdr, data, data_len);
947 break;
948 case VERIFY_PATTERN:
949 /* nothing to do here */
950 break;
951 default:
952 log_err("fio: bad verify type: %d\n", td->o.verify);
953 assert(0);
954 }
955 if (td->o.verify_offset)
956 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
957}
958
959/*
960 * fill body of io_u->buf with random data and add a header with the
961 * checksum of choice
962 */
963void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
964{
965 if (td->o.verify == VERIFY_NULL)
966 return;
967
968 io_u->numberio = td->io_issues[io_u->ddir];
969
970 fill_pattern_headers(td, io_u, 0, 0);
971}
972
973int get_next_verify(struct thread_data *td, struct io_u *io_u)
974{
975 struct io_piece *ipo = NULL;
976
977 /*
978 * this io_u is from a requeue, we already filled the offsets
979 */
980 if (io_u->file)
981 return 0;
982
983 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
984 struct rb_node *n = rb_first(&td->io_hist_tree);
985
986 ipo = rb_entry(n, struct io_piece, rb_node);
987 rb_erase(n, &td->io_hist_tree);
988 assert(ipo->flags & IP_F_ONRB);
989 ipo->flags &= ~IP_F_ONRB;
990 } else if (!flist_empty(&td->io_hist_list)) {
991 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
992 flist_del(&ipo->list);
993 assert(ipo->flags & IP_F_ONLIST);
994 ipo->flags &= ~IP_F_ONLIST;
995 }
996
997 if (ipo) {
998 td->io_hist_len--;
999
1000 io_u->offset = ipo->offset;
1001 io_u->buflen = ipo->len;
1002 io_u->numberio = ipo->numberio;
1003 io_u->file = ipo->file;
1004 io_u->flags |= IO_U_F_VER_LIST;
1005
1006 if (ipo->flags & IP_F_TRIMMED)
1007 io_u->flags |= IO_U_F_TRIMMED;
1008
1009 if (!fio_file_open(io_u->file)) {
1010 int r = td_io_open_file(td, io_u->file);
1011
1012 if (r) {
1013 dprint(FD_VERIFY, "failed file %s open\n",
1014 io_u->file->file_name);
1015 return 1;
1016 }
1017 }
1018
1019 get_file(ipo->file);
1020 assert(fio_file_open(io_u->file));
1021 io_u->ddir = DDIR_READ;
1022 io_u->xfer_buf = io_u->buf;
1023 io_u->xfer_buflen = io_u->buflen;
1024
1025 remove_trim_entry(td, ipo);
1026 free(ipo);
1027 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1028 return 0;
1029 }
1030
1031 dprint(FD_VERIFY, "get_next_verify: empty\n");
1032 return 1;
1033}
1034
1035void fio_verify_init(struct thread_data *td)
1036{
1037 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1038 td->o.verify == VERIFY_CRC32C) {
1039 crc32c_intel_probe();
1040 }
1041}
1042
1043static void *verify_async_thread(void *data)
1044{
1045 struct thread_data *td = data;
1046 struct io_u *io_u;
1047 int ret = 0;
1048
1049 if (td->o.verify_cpumask_set &&
1050 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1051 log_err("fio: failed setting verify thread affinity\n");
1052 goto done;
1053 }
1054
1055 do {
1056 FLIST_HEAD(list);
1057
1058 read_barrier();
1059 if (td->verify_thread_exit)
1060 break;
1061
1062 pthread_mutex_lock(&td->io_u_lock);
1063
1064 while (flist_empty(&td->verify_list) &&
1065 !td->verify_thread_exit) {
1066 ret = pthread_cond_wait(&td->verify_cond,
1067 &td->io_u_lock);
1068 if (ret) {
1069 pthread_mutex_unlock(&td->io_u_lock);
1070 break;
1071 }
1072 }
1073
1074 flist_splice_init(&td->verify_list, &list);
1075 pthread_mutex_unlock(&td->io_u_lock);
1076
1077 if (flist_empty(&list))
1078 continue;
1079
1080 while (!flist_empty(&list)) {
1081 io_u = flist_entry(list.next, struct io_u, verify_list);
1082 flist_del(&io_u->verify_list);
1083
1084 ret = verify_io_u(td, io_u);
1085 put_io_u(td, io_u);
1086 if (!ret)
1087 continue;
1088 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1089 update_error_count(td, ret);
1090 td_clear_error(td);
1091 ret = 0;
1092 }
1093 }
1094 } while (!ret);
1095
1096 if (ret) {
1097 td_verror(td, ret, "async_verify");
1098 if (td->o.verify_fatal)
1099 td->terminate = 1;
1100 }
1101
1102done:
1103 pthread_mutex_lock(&td->io_u_lock);
1104 td->nr_verify_threads--;
1105 pthread_mutex_unlock(&td->io_u_lock);
1106
1107 pthread_cond_signal(&td->free_cond);
1108 return NULL;
1109}
1110
1111int verify_async_init(struct thread_data *td)
1112{
1113 int i, ret;
1114 pthread_attr_t attr;
1115
1116 pthread_attr_init(&attr);
1117 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1118
1119 td->verify_thread_exit = 0;
1120
1121 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1122 for (i = 0; i < td->o.verify_async; i++) {
1123 ret = pthread_create(&td->verify_threads[i], &attr,
1124 verify_async_thread, td);
1125 if (ret) {
1126 log_err("fio: async verify creation failed: %s\n",
1127 strerror(ret));
1128 break;
1129 }
1130 ret = pthread_detach(td->verify_threads[i]);
1131 if (ret) {
1132 log_err("fio: async verify thread detach failed: %s\n",
1133 strerror(ret));
1134 break;
1135 }
1136 td->nr_verify_threads++;
1137 }
1138
1139 pthread_attr_destroy(&attr);
1140
1141 if (i != td->o.verify_async) {
1142 log_err("fio: only %d verify threads started, exiting\n", i);
1143 td->verify_thread_exit = 1;
1144 write_barrier();
1145 pthread_cond_broadcast(&td->verify_cond);
1146 return 1;
1147 }
1148
1149 return 0;
1150}
1151
1152void verify_async_exit(struct thread_data *td)
1153{
1154 td->verify_thread_exit = 1;
1155 write_barrier();
1156 pthread_cond_broadcast(&td->verify_cond);
1157
1158 pthread_mutex_lock(&td->io_u_lock);
1159
1160 while (td->nr_verify_threads)
1161 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1162
1163 pthread_mutex_unlock(&td->io_u_lock);
1164 free(td->verify_threads);
1165 td->verify_threads = NULL;
1166}
fio - Flexible IO Tester