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verify: disable numberio check for multiple block sizes
[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#include "crc/xxhash.h"
27
28static void populate_hdr(struct thread_data *td, struct io_u *io_u,
29 struct verify_header *hdr, unsigned int header_num,
30 unsigned int header_len);
31
32static void fill_pattern(struct thread_data *td, void *p, unsigned int len,
33 char *pattern, unsigned int pattern_bytes)
34{
35 switch (pattern_bytes) {
36 case 0:
37 assert(0);
38 break;
39 case 1:
40 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
41 memset(p, pattern[0], len);
42 break;
43 default: {
44 unsigned int i = 0, size = 0;
45 unsigned char *b = p;
46
47 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
48 pattern_bytes, len);
49
50 while (i < len) {
51 size = pattern_bytes;
52 if (size > (len - i))
53 size = len - i;
54 memcpy(b+i, pattern, size);
55 i += size;
56 }
57 break;
58 }
59 }
60}
61
62void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
63{
64 fill_pattern(td, p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes);
65}
66
67void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
68 struct io_u *io_u, unsigned long seed, int use_seed)
69{
70 if (!td->o.verify_pattern_bytes) {
71 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
72
73 if (use_seed)
74 __fill_random_buf(p, len, seed);
75 else
76 io_u->rand_seed = fill_random_buf(&td->__verify_state, p, len);
77 return;
78 }
79
80 if (io_u->buf_filled_len >= len) {
81 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
82 td->o.verify_pattern_bytes, len);
83 return;
84 }
85
86 fill_pattern(td, p, len, td->o.verify_pattern, td->o.verify_pattern_bytes);
87
88 io_u->buf_filled_len = len;
89}
90
91static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
92{
93 unsigned int hdr_inc;
94
95 hdr_inc = io_u->buflen;
96 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
97 hdr_inc = td->o.verify_interval;
98
99 return hdr_inc;
100}
101
102static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
103 unsigned long seed, int use_seed)
104{
105 unsigned int hdr_inc, header_num;
106 struct verify_header *hdr;
107 void *p = io_u->buf;
108
109 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
110
111 hdr_inc = get_hdr_inc(td, io_u);
112 header_num = 0;
113 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
114 hdr = p;
115 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
116 header_num++;
117 }
118}
119
120static void memswp(void *buf1, void *buf2, unsigned int len)
121{
122 char swap[200];
123
124 assert(len <= sizeof(swap));
125
126 memcpy(&swap, buf1, len);
127 memcpy(buf1, buf2, len);
128 memcpy(buf2, &swap, len);
129}
130
131static void hexdump(void *buffer, int len)
132{
133 unsigned char *p = buffer;
134 int i;
135
136 for (i = 0; i < len; i++)
137 log_err("%02x", p[i]);
138 log_err("\n");
139}
140
141/*
142 * Prepare for separation of verify_header and checksum header
143 */
144static inline unsigned int __hdr_size(int verify_type)
145{
146 unsigned int len = 0;
147
148 switch (verify_type) {
149 case VERIFY_NONE:
150 case VERIFY_NULL:
151 len = 0;
152 break;
153 case VERIFY_MD5:
154 len = sizeof(struct vhdr_md5);
155 break;
156 case VERIFY_CRC64:
157 len = sizeof(struct vhdr_crc64);
158 break;
159 case VERIFY_CRC32C:
160 case VERIFY_CRC32:
161 case VERIFY_CRC32C_INTEL:
162 len = sizeof(struct vhdr_crc32);
163 break;
164 case VERIFY_CRC16:
165 len = sizeof(struct vhdr_crc16);
166 break;
167 case VERIFY_CRC7:
168 len = sizeof(struct vhdr_crc7);
169 break;
170 case VERIFY_SHA256:
171 len = sizeof(struct vhdr_sha256);
172 break;
173 case VERIFY_SHA512:
174 len = sizeof(struct vhdr_sha512);
175 break;
176 case VERIFY_XXHASH:
177 len = sizeof(struct vhdr_xxhash);
178 break;
179 case VERIFY_META:
180 len = sizeof(struct vhdr_meta);
181 break;
182 case VERIFY_SHA1:
183 len = sizeof(struct vhdr_sha1);
184 break;
185 case VERIFY_PATTERN:
186 len = 0;
187 break;
188 default:
189 log_err("fio: unknown verify header!\n");
190 assert(0);
191 }
192
193 return len + sizeof(struct verify_header);
194}
195
196static inline unsigned int hdr_size(struct verify_header *hdr)
197{
198 return __hdr_size(hdr->verify_type);
199}
200
201static void *hdr_priv(struct verify_header *hdr)
202{
203 void *priv = hdr;
204
205 return priv + sizeof(struct verify_header);
206}
207
208/*
209 * Verify container, pass info to verify handlers and allow them to
210 * pass info back in case of error
211 */
212struct vcont {
213 /*
214 * Input
215 */
216 struct io_u *io_u;
217 unsigned int hdr_num;
218 struct thread_data *td;
219
220 /*
221 * Output, only valid in case of error
222 */
223 const char *name;
224 void *good_crc;
225 void *bad_crc;
226 unsigned int crc_len;
227};
228
229#define DUMP_BUF_SZ 255
230static int dump_buf_warned;
231
232static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
233 const char *type, struct fio_file *f)
234{
235 char *ptr, fname[DUMP_BUF_SZ];
236 size_t buf_left = DUMP_BUF_SZ;
237 int ret, fd;
238
239 ptr = strdup(f->file_name);
240
241 fname[DUMP_BUF_SZ - 1] = '\0';
242 strncpy(fname, basename(ptr), DUMP_BUF_SZ - 1);
243
244 buf_left -= strlen(fname);
245 if (buf_left <= 0) {
246 if (!dump_buf_warned) {
247 log_err("fio: verify failure dump buffer too small\n");
248 dump_buf_warned = 1;
249 }
250 free(ptr);
251 return;
252 }
253
254 snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type);
255
256 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
257 if (fd < 0) {
258 perror("open verify buf file");
259 return;
260 }
261
262 while (len) {
263 ret = write(fd, buf, len);
264 if (!ret)
265 break;
266 else if (ret < 0) {
267 perror("write verify buf file");
268 break;
269 }
270 len -= ret;
271 buf += ret;
272 }
273
274 close(fd);
275 log_err(" %s data dumped as %s\n", type, fname);
276 free(ptr);
277}
278
279/*
280 * Dump the contents of the read block and re-generate the correct data
281 * and dump that too.
282 */
283static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
284{
285 struct thread_data *td = vc->td;
286 struct io_u *io_u = vc->io_u;
287 unsigned long hdr_offset;
288 struct io_u dummy;
289 void *buf;
290
291 if (!td->o.verify_dump)
292 return;
293
294 /*
295 * Dump the contents we just read off disk
296 */
297 hdr_offset = vc->hdr_num * hdr->len;
298
299 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
300 "received", vc->io_u->file);
301
302 /*
303 * Allocate a new buf and re-generate the original data
304 */
305 buf = malloc(io_u->buflen);
306 dummy = *io_u;
307 dummy.buf = buf;
308 dummy.rand_seed = hdr->rand_seed;
309 dummy.buf_filled_len = 0;
310 dummy.buflen = io_u->buflen;
311
312 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
313
314 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
315 "expected", vc->io_u->file);
316 free(buf);
317}
318
319static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
320{
321 unsigned long long offset;
322
323 offset = vc->io_u->offset;
324 offset += vc->hdr_num * hdr->len;
325 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
326 vc->name, vc->io_u->file->file_name, offset, hdr->len);
327
328 if (vc->good_crc && vc->bad_crc) {
329 log_err(" Expected CRC: ");
330 hexdump(vc->good_crc, vc->crc_len);
331 log_err(" Received CRC: ");
332 hexdump(vc->bad_crc, vc->crc_len);
333 }
334
335 dump_verify_buffers(hdr, vc);
336}
337
338/*
339 * Return data area 'header_num'
340 */
341static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
342{
343 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
344}
345
346static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
347{
348 struct thread_data *td = vc->td;
349 struct io_u *io_u = vc->io_u;
350 char *buf, *pattern;
351 unsigned int header_size = __hdr_size(td->o.verify);
352 unsigned int len, mod, i, size, pattern_size;
353
354 pattern = td->o.verify_pattern;
355 pattern_size = td->o.verify_pattern_bytes;
356 if (pattern_size <= 1)
357 pattern_size = MAX_PATTERN_SIZE;
358 buf = (void *) hdr + header_size;
359 len = get_hdr_inc(td, io_u) - header_size;
360 mod = header_size % pattern_size;
361
362 for (i = 0; i < len; i += size) {
363 size = pattern_size - mod;
364 if (size > (len - i))
365 size = len - i;
366 if (memcmp(buf + i, pattern + mod, size))
367 /* Let the slow compare find the first mismatch byte. */
368 break;
369 mod = 0;
370 }
371
372 for (; i < len; i++) {
373 if (buf[i] != pattern[mod]) {
374 unsigned int bits;
375
376 bits = hweight8(buf[i] ^ pattern[mod]);
377 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
378 buf[i], pattern[mod], bits);
379 log_err("fio: bad pattern block offset %u\n", i);
380 dump_verify_buffers(hdr, vc);
381 return EILSEQ;
382 }
383 mod++;
384 if (mod == td->o.verify_pattern_bytes)
385 mod = 0;
386 }
387
388 return 0;
389}
390
391static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
392{
393 struct thread_data *td = vc->td;
394 struct vhdr_meta *vh = hdr_priv(hdr);
395 struct io_u *io_u = vc->io_u;
396 int ret = EILSEQ;
397
398 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
399
400 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
401 ret = 0;
402
403 if (td->o.verify_pattern_bytes)
404 ret |= verify_io_u_pattern(hdr, vc);
405
406 /*
407 * For read-only workloads, the program cannot be certain of the
408 * last numberio written to a block. Checking of numberio will be
409 * done only for workloads that write data. For verify_only,
410 * numberio will be checked in the last iteration when the correct
411 * state of numberio, that would have been written to each block
412 * in a previous run of fio, has been reached.
413 */
414 if ((td_write(td) || td_rw(td)) && (td_min_bs(td) == td_max_bs(td)))
415 if (!td->o.verify_only || td->o.loops == 0)
416 if (vh->numberio != io_u->numberio)
417 ret = EILSEQ;
418
419 if (!ret)
420 return 0;
421
422 vc->name = "meta";
423 log_verify_failure(hdr, vc);
424 return ret;
425}
426
427static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
428{
429 void *p = io_u_verify_off(hdr, vc);
430 struct vhdr_xxhash *vh = hdr_priv(hdr);
431 uint32_t hash;
432 void *state;
433
434 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
435
436 state = XXH32_init(1);
437 XXH32_update(state, p, hdr->len - hdr_size(hdr));
438 hash = XXH32_digest(state);
439
440 if (vh->hash == hash)
441 return 0;
442
443 vc->name = "xxhash";
444 vc->good_crc = &vh->hash;
445 vc->bad_crc = &hash;
446 vc->crc_len = sizeof(hash);
447 log_verify_failure(hdr, vc);
448 return EILSEQ;
449}
450
451static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
452{
453 void *p = io_u_verify_off(hdr, vc);
454 struct vhdr_sha512 *vh = hdr_priv(hdr);
455 uint8_t sha512[128];
456 struct fio_sha512_ctx sha512_ctx = {
457 .buf = sha512,
458 };
459
460 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
461
462 fio_sha512_init(&sha512_ctx);
463 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
464
465 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
466 return 0;
467
468 vc->name = "sha512";
469 vc->good_crc = vh->sha512;
470 vc->bad_crc = sha512_ctx.buf;
471 vc->crc_len = sizeof(vh->sha512);
472 log_verify_failure(hdr, vc);
473 return EILSEQ;
474}
475
476static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
477{
478 void *p = io_u_verify_off(hdr, vc);
479 struct vhdr_sha256 *vh = hdr_priv(hdr);
480 uint8_t sha256[64];
481 struct fio_sha256_ctx sha256_ctx = {
482 .buf = sha256,
483 };
484
485 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
486
487 fio_sha256_init(&sha256_ctx);
488 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
489
490 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
491 return 0;
492
493 vc->name = "sha256";
494 vc->good_crc = vh->sha256;
495 vc->bad_crc = sha256_ctx.buf;
496 vc->crc_len = sizeof(vh->sha256);
497 log_verify_failure(hdr, vc);
498 return EILSEQ;
499}
500
501static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
502{
503 void *p = io_u_verify_off(hdr, vc);
504 struct vhdr_sha1 *vh = hdr_priv(hdr);
505 uint32_t sha1[5];
506 struct fio_sha1_ctx sha1_ctx = {
507 .H = sha1,
508 };
509
510 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
511
512 fio_sha1_init(&sha1_ctx);
513 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
514
515 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
516 return 0;
517
518 vc->name = "sha1";
519 vc->good_crc = vh->sha1;
520 vc->bad_crc = sha1_ctx.H;
521 vc->crc_len = sizeof(vh->sha1);
522 log_verify_failure(hdr, vc);
523 return EILSEQ;
524}
525
526static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
527{
528 void *p = io_u_verify_off(hdr, vc);
529 struct vhdr_crc7 *vh = hdr_priv(hdr);
530 unsigned char c;
531
532 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
533
534 c = fio_crc7(p, hdr->len - hdr_size(hdr));
535
536 if (c == vh->crc7)
537 return 0;
538
539 vc->name = "crc7";
540 vc->good_crc = &vh->crc7;
541 vc->bad_crc = &c;
542 vc->crc_len = 1;
543 log_verify_failure(hdr, vc);
544 return EILSEQ;
545}
546
547static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
548{
549 void *p = io_u_verify_off(hdr, vc);
550 struct vhdr_crc16 *vh = hdr_priv(hdr);
551 unsigned short c;
552
553 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
554
555 c = fio_crc16(p, hdr->len - hdr_size(hdr));
556
557 if (c == vh->crc16)
558 return 0;
559
560 vc->name = "crc16";
561 vc->good_crc = &vh->crc16;
562 vc->bad_crc = &c;
563 vc->crc_len = 2;
564 log_verify_failure(hdr, vc);
565 return EILSEQ;
566}
567
568static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
569{
570 void *p = io_u_verify_off(hdr, vc);
571 struct vhdr_crc64 *vh = hdr_priv(hdr);
572 unsigned long long c;
573
574 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
575
576 c = fio_crc64(p, hdr->len - hdr_size(hdr));
577
578 if (c == vh->crc64)
579 return 0;
580
581 vc->name = "crc64";
582 vc->good_crc = &vh->crc64;
583 vc->bad_crc = &c;
584 vc->crc_len = 8;
585 log_verify_failure(hdr, vc);
586 return EILSEQ;
587}
588
589static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
590{
591 void *p = io_u_verify_off(hdr, vc);
592 struct vhdr_crc32 *vh = hdr_priv(hdr);
593 uint32_t c;
594
595 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
596
597 c = fio_crc32(p, hdr->len - hdr_size(hdr));
598
599 if (c == vh->crc32)
600 return 0;
601
602 vc->name = "crc32";
603 vc->good_crc = &vh->crc32;
604 vc->bad_crc = &c;
605 vc->crc_len = 4;
606 log_verify_failure(hdr, vc);
607 return EILSEQ;
608}
609
610static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
611{
612 void *p = io_u_verify_off(hdr, vc);
613 struct vhdr_crc32 *vh = hdr_priv(hdr);
614 uint32_t c;
615
616 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
617
618 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
619
620 if (c == vh->crc32)
621 return 0;
622
623 vc->name = "crc32c";
624 vc->good_crc = &vh->crc32;
625 vc->bad_crc = &c;
626 vc->crc_len = 4;
627 log_verify_failure(hdr, vc);
628 return EILSEQ;
629}
630
631static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
632{
633 void *p = io_u_verify_off(hdr, vc);
634 struct vhdr_md5 *vh = hdr_priv(hdr);
635 uint32_t hash[MD5_HASH_WORDS];
636 struct fio_md5_ctx md5_ctx = {
637 .hash = hash,
638 };
639
640 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
641
642 fio_md5_init(&md5_ctx);
643 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
644
645 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
646 return 0;
647
648 vc->name = "md5";
649 vc->good_crc = vh->md5_digest;
650 vc->bad_crc = md5_ctx.hash;
651 vc->crc_len = sizeof(hash);
652 log_verify_failure(hdr, vc);
653 return EILSEQ;
654}
655
656/*
657 * Push IO verification to a separate thread
658 */
659int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
660{
661 if (io_u->file)
662 put_file_log(td, io_u->file);
663
664 pthread_mutex_lock(&td->io_u_lock);
665
666 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
667 td->cur_depth--;
668 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
669 }
670 flist_add_tail(&io_u->verify_list, &td->verify_list);
671 io_u->flags |= IO_U_F_FREE_DEF;
672 pthread_mutex_unlock(&td->io_u_lock);
673
674 pthread_cond_signal(&td->verify_cond);
675 return 0;
676}
677
678static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
679{
680 static char zero_buf[1024];
681 unsigned int this_len, len;
682 int ret = 0;
683 void *p;
684
685 if (!td->o.trim_zero)
686 return 0;
687
688 len = io_u->buflen;
689 p = io_u->buf;
690 do {
691 this_len = sizeof(zero_buf);
692 if (this_len > len)
693 this_len = len;
694 if (memcmp(p, zero_buf, this_len)) {
695 ret = EILSEQ;
696 break;
697 }
698 len -= this_len;
699 p += this_len;
700 } while (len);
701
702 if (!ret)
703 return 0;
704
705 log_err("trim: verify failed at file %s offset %llu, length %lu"
706 ", block offset %lu\n",
707 io_u->file->file_name, io_u->offset, io_u->buflen,
708 (unsigned long) (p - io_u->buf));
709 return ret;
710}
711
712static int verify_header(struct io_u *io_u, struct verify_header *hdr,
713 unsigned int hdr_num, unsigned int hdr_len)
714{
715 void *p = hdr;
716 uint32_t crc;
717
718 if (hdr->magic != FIO_HDR_MAGIC) {
719 log_err("verify: bad magic header %x, wanted %x",
720 hdr->magic, FIO_HDR_MAGIC);
721 goto err;
722 }
723 if (hdr->len != hdr_len) {
724 log_err("verify: bad header length %u, wanted %u",
725 hdr->len, hdr_len);
726 goto err;
727 }
728 if (hdr->rand_seed != io_u->rand_seed) {
729 log_err("verify: bad header rand_seed %"PRIu64
730 ", wanted %"PRIu64,
731 hdr->rand_seed, io_u->rand_seed);
732 goto err;
733 }
734
735 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
736 if (crc != hdr->crc32) {
737 log_err("verify: bad header crc %x, calculated %x",
738 hdr->crc32, crc);
739 goto err;
740 }
741 return 0;
742
743err:
744 log_err(" at file %s offset %llu, length %u\n",
745 io_u->file->file_name,
746 io_u->offset + hdr_num * hdr_len, hdr_len);
747 return EILSEQ;
748}
749
750int verify_io_u(struct thread_data *td, struct io_u *io_u)
751{
752 struct verify_header *hdr;
753 unsigned int header_size, hdr_inc, hdr_num = 0;
754 void *p;
755 int ret;
756
757 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
758 return 0;
759 if (io_u->flags & IO_U_F_TRIMMED) {
760 ret = verify_trimmed_io_u(td, io_u);
761 goto done;
762 }
763
764 hdr_inc = get_hdr_inc(td, io_u);
765
766 ret = 0;
767 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
768 p += hdr_inc, hdr_num++) {
769 struct vcont vc = {
770 .io_u = io_u,
771 .hdr_num = hdr_num,
772 .td = td,
773 };
774 unsigned int verify_type;
775
776 if (ret && td->o.verify_fatal)
777 break;
778
779 header_size = __hdr_size(td->o.verify);
780 if (td->o.verify_offset)
781 memswp(p, p + td->o.verify_offset, header_size);
782 hdr = p;
783
784 /*
785 * Make rand_seed check pass when have verifysort or
786 * verify_backlog.
787 */
788 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
789 io_u->rand_seed = hdr->rand_seed;
790
791 ret = verify_header(io_u, hdr, hdr_num, hdr_inc);
792 if (ret)
793 return ret;
794
795 if (td->o.verify != VERIFY_NONE)
796 verify_type = td->o.verify;
797 else
798 verify_type = hdr->verify_type;
799
800 switch (verify_type) {
801 case VERIFY_MD5:
802 ret = verify_io_u_md5(hdr, &vc);
803 break;
804 case VERIFY_CRC64:
805 ret = verify_io_u_crc64(hdr, &vc);
806 break;
807 case VERIFY_CRC32C:
808 case VERIFY_CRC32C_INTEL:
809 ret = verify_io_u_crc32c(hdr, &vc);
810 break;
811 case VERIFY_CRC32:
812 ret = verify_io_u_crc32(hdr, &vc);
813 break;
814 case VERIFY_CRC16:
815 ret = verify_io_u_crc16(hdr, &vc);
816 break;
817 case VERIFY_CRC7:
818 ret = verify_io_u_crc7(hdr, &vc);
819 break;
820 case VERIFY_SHA256:
821 ret = verify_io_u_sha256(hdr, &vc);
822 break;
823 case VERIFY_SHA512:
824 ret = verify_io_u_sha512(hdr, &vc);
825 break;
826 case VERIFY_XXHASH:
827 ret = verify_io_u_xxhash(hdr, &vc);
828 break;
829 case VERIFY_META:
830 ret = verify_io_u_meta(hdr, &vc);
831 break;
832 case VERIFY_SHA1:
833 ret = verify_io_u_sha1(hdr, &vc);
834 break;
835 case VERIFY_PATTERN:
836 ret = verify_io_u_pattern(hdr, &vc);
837 break;
838 default:
839 log_err("Bad verify type %u\n", hdr->verify_type);
840 ret = EINVAL;
841 }
842
843 if (ret && verify_type != hdr->verify_type)
844 log_err("fio: verify type mismatch (%u media, %u given)\n",
845 hdr->verify_type, verify_type);
846 }
847
848done:
849 if (ret && td->o.verify_fatal)
850 fio_mark_td_terminate(td);
851
852 return ret;
853}
854
855static void fill_meta(struct verify_header *hdr, struct thread_data *td,
856 struct io_u *io_u, unsigned int header_num)
857{
858 struct vhdr_meta *vh = hdr_priv(hdr);
859
860 vh->thread = td->thread_number;
861
862 vh->time_sec = io_u->start_time.tv_sec;
863 vh->time_usec = io_u->start_time.tv_usec;
864
865 vh->numberio = io_u->numberio;
866
867 vh->offset = io_u->offset + header_num * td->o.verify_interval;
868}
869
870static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
871{
872 struct vhdr_xxhash *vh = hdr_priv(hdr);
873 void *state;
874
875 state = XXH32_init(1);
876 XXH32_update(state, p, len);
877 vh->hash = XXH32_digest(state);
878}
879
880static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
881{
882 struct vhdr_sha512 *vh = hdr_priv(hdr);
883 struct fio_sha512_ctx sha512_ctx = {
884 .buf = vh->sha512,
885 };
886
887 fio_sha512_init(&sha512_ctx);
888 fio_sha512_update(&sha512_ctx, p, len);
889}
890
891static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
892{
893 struct vhdr_sha256 *vh = hdr_priv(hdr);
894 struct fio_sha256_ctx sha256_ctx = {
895 .buf = vh->sha256,
896 };
897
898 fio_sha256_init(&sha256_ctx);
899 fio_sha256_update(&sha256_ctx, p, len);
900}
901
902static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
903{
904 struct vhdr_sha1 *vh = hdr_priv(hdr);
905 struct fio_sha1_ctx sha1_ctx = {
906 .H = vh->sha1,
907 };
908
909 fio_sha1_init(&sha1_ctx);
910 fio_sha1_update(&sha1_ctx, p, len);
911}
912
913static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
914{
915 struct vhdr_crc7 *vh = hdr_priv(hdr);
916
917 vh->crc7 = fio_crc7(p, len);
918}
919
920static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
921{
922 struct vhdr_crc16 *vh = hdr_priv(hdr);
923
924 vh->crc16 = fio_crc16(p, len);
925}
926
927static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
928{
929 struct vhdr_crc32 *vh = hdr_priv(hdr);
930
931 vh->crc32 = fio_crc32(p, len);
932}
933
934static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
935{
936 struct vhdr_crc32 *vh = hdr_priv(hdr);
937
938 vh->crc32 = fio_crc32c(p, len);
939}
940
941static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
942{
943 struct vhdr_crc64 *vh = hdr_priv(hdr);
944
945 vh->crc64 = fio_crc64(p, len);
946}
947
948static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
949{
950 struct vhdr_md5 *vh = hdr_priv(hdr);
951 struct fio_md5_ctx md5_ctx = {
952 .hash = (uint32_t *) vh->md5_digest,
953 };
954
955 fio_md5_init(&md5_ctx);
956 fio_md5_update(&md5_ctx, p, len);
957}
958
959static void populate_hdr(struct thread_data *td, struct io_u *io_u,
960 struct verify_header *hdr, unsigned int header_num,
961 unsigned int header_len)
962{
963 unsigned int data_len;
964 void *data, *p;
965
966 p = (void *) hdr;
967
968 hdr->magic = FIO_HDR_MAGIC;
969 hdr->verify_type = td->o.verify;
970 hdr->len = header_len;
971 hdr->rand_seed = io_u->rand_seed;
972 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
973
974 data_len = header_len - hdr_size(hdr);
975
976 data = p + hdr_size(hdr);
977 switch (td->o.verify) {
978 case VERIFY_MD5:
979 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
980 io_u, hdr->len);
981 fill_md5(hdr, data, data_len);
982 break;
983 case VERIFY_CRC64:
984 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
985 io_u, hdr->len);
986 fill_crc64(hdr, data, data_len);
987 break;
988 case VERIFY_CRC32C:
989 case VERIFY_CRC32C_INTEL:
990 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
991 io_u, hdr->len);
992 fill_crc32c(hdr, data, data_len);
993 break;
994 case VERIFY_CRC32:
995 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
996 io_u, hdr->len);
997 fill_crc32(hdr, data, data_len);
998 break;
999 case VERIFY_CRC16:
1000 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1001 io_u, hdr->len);
1002 fill_crc16(hdr, data, data_len);
1003 break;
1004 case VERIFY_CRC7:
1005 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1006 io_u, hdr->len);
1007 fill_crc7(hdr, data, data_len);
1008 break;
1009 case VERIFY_SHA256:
1010 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1011 io_u, hdr->len);
1012 fill_sha256(hdr, data, data_len);
1013 break;
1014 case VERIFY_SHA512:
1015 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1016 io_u, hdr->len);
1017 fill_sha512(hdr, data, data_len);
1018 break;
1019 case VERIFY_XXHASH:
1020 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1021 io_u, hdr->len);
1022 fill_xxhash(hdr, data, data_len);
1023 break;
1024 case VERIFY_META:
1025 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
1026 io_u, hdr->len);
1027 fill_meta(hdr, td, io_u, header_num);
1028 break;
1029 case VERIFY_SHA1:
1030 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1031 io_u, hdr->len);
1032 fill_sha1(hdr, data, data_len);
1033 break;
1034 case VERIFY_PATTERN:
1035 /* nothing to do here */
1036 break;
1037 default:
1038 log_err("fio: bad verify type: %d\n", td->o.verify);
1039 assert(0);
1040 }
1041 if (td->o.verify_offset)
1042 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
1043}
1044
1045/*
1046 * fill body of io_u->buf with random data and add a header with the
1047 * checksum of choice
1048 */
1049void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1050{
1051 if (td->o.verify == VERIFY_NULL)
1052 return;
1053
1054 io_u->numberio = td->io_issues[io_u->ddir];
1055
1056 fill_pattern_headers(td, io_u, 0, 0);
1057}
1058
1059int get_next_verify(struct thread_data *td, struct io_u *io_u)
1060{
1061 struct io_piece *ipo = NULL;
1062
1063 /*
1064 * this io_u is from a requeue, we already filled the offsets
1065 */
1066 if (io_u->file)
1067 return 0;
1068
1069 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1070 struct rb_node *n = rb_first(&td->io_hist_tree);
1071
1072 ipo = rb_entry(n, struct io_piece, rb_node);
1073
1074 /*
1075 * Ensure that the associated IO has completed
1076 */
1077 read_barrier();
1078 if (ipo->flags & IP_F_IN_FLIGHT)
1079 goto nothing;
1080
1081 rb_erase(n, &td->io_hist_tree);
1082 assert(ipo->flags & IP_F_ONRB);
1083 ipo->flags &= ~IP_F_ONRB;
1084 } else if (!flist_empty(&td->io_hist_list)) {
1085 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1086
1087 /*
1088 * Ensure that the associated IO has completed
1089 */
1090 read_barrier();
1091 if (ipo->flags & IP_F_IN_FLIGHT)
1092 goto nothing;
1093
1094 flist_del(&ipo->list);
1095 assert(ipo->flags & IP_F_ONLIST);
1096 ipo->flags &= ~IP_F_ONLIST;
1097 }
1098
1099 if (ipo) {
1100 td->io_hist_len--;
1101
1102 io_u->offset = ipo->offset;
1103 io_u->buflen = ipo->len;
1104 io_u->numberio = ipo->numberio;
1105 io_u->file = ipo->file;
1106 io_u->flags |= IO_U_F_VER_LIST;
1107
1108 if (ipo->flags & IP_F_TRIMMED)
1109 io_u->flags |= IO_U_F_TRIMMED;
1110
1111 if (!fio_file_open(io_u->file)) {
1112 int r = td_io_open_file(td, io_u->file);
1113
1114 if (r) {
1115 dprint(FD_VERIFY, "failed file %s open\n",
1116 io_u->file->file_name);
1117 return 1;
1118 }
1119 }
1120
1121 get_file(ipo->file);
1122 assert(fio_file_open(io_u->file));
1123 io_u->ddir = DDIR_READ;
1124 io_u->xfer_buf = io_u->buf;
1125 io_u->xfer_buflen = io_u->buflen;
1126
1127 remove_trim_entry(td, ipo);
1128 free(ipo);
1129 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1130
1131 if (!td->o.verify_pattern_bytes) {
1132 io_u->rand_seed = __rand(&td->__verify_state);
1133 if (sizeof(int) != sizeof(long *))
1134 io_u->rand_seed *= __rand(&td->__verify_state);
1135 }
1136 return 0;
1137 }
1138
1139nothing:
1140 dprint(FD_VERIFY, "get_next_verify: empty\n");
1141 return 1;
1142}
1143
1144void fio_verify_init(struct thread_data *td)
1145{
1146 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1147 td->o.verify == VERIFY_CRC32C) {
1148 crc32c_intel_probe();
1149 }
1150}
1151
1152static void *verify_async_thread(void *data)
1153{
1154 struct thread_data *td = data;
1155 struct io_u *io_u;
1156 int ret = 0;
1157
1158 if (td->o.verify_cpumask_set &&
1159 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1160 log_err("fio: failed setting verify thread affinity\n");
1161 goto done;
1162 }
1163
1164 do {
1165 FLIST_HEAD(list);
1166
1167 read_barrier();
1168 if (td->verify_thread_exit)
1169 break;
1170
1171 pthread_mutex_lock(&td->io_u_lock);
1172
1173 while (flist_empty(&td->verify_list) &&
1174 !td->verify_thread_exit) {
1175 ret = pthread_cond_wait(&td->verify_cond,
1176 &td->io_u_lock);
1177 if (ret) {
1178 pthread_mutex_unlock(&td->io_u_lock);
1179 break;
1180 }
1181 }
1182
1183 flist_splice_init(&td->verify_list, &list);
1184 pthread_mutex_unlock(&td->io_u_lock);
1185
1186 if (flist_empty(&list))
1187 continue;
1188
1189 while (!flist_empty(&list)) {
1190 io_u = flist_first_entry(&list, struct io_u, verify_list);
1191 flist_del(&io_u->verify_list);
1192
1193 ret = verify_io_u(td, io_u);
1194 put_io_u(td, io_u);
1195 if (!ret)
1196 continue;
1197 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1198 update_error_count(td, ret);
1199 td_clear_error(td);
1200 ret = 0;
1201 }
1202 }
1203 } while (!ret);
1204
1205 if (ret) {
1206 td_verror(td, ret, "async_verify");
1207 if (td->o.verify_fatal)
1208 fio_mark_td_terminate(td);
1209 }
1210
1211done:
1212 pthread_mutex_lock(&td->io_u_lock);
1213 td->nr_verify_threads--;
1214 pthread_mutex_unlock(&td->io_u_lock);
1215
1216 pthread_cond_signal(&td->free_cond);
1217 return NULL;
1218}
1219
1220int verify_async_init(struct thread_data *td)
1221{
1222 int i, ret;
1223 pthread_attr_t attr;
1224
1225 pthread_attr_init(&attr);
1226 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1227
1228 td->verify_thread_exit = 0;
1229
1230 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1231 for (i = 0; i < td->o.verify_async; i++) {
1232 ret = pthread_create(&td->verify_threads[i], &attr,
1233 verify_async_thread, td);
1234 if (ret) {
1235 log_err("fio: async verify creation failed: %s\n",
1236 strerror(ret));
1237 break;
1238 }
1239 ret = pthread_detach(td->verify_threads[i]);
1240 if (ret) {
1241 log_err("fio: async verify thread detach failed: %s\n",
1242 strerror(ret));
1243 break;
1244 }
1245 td->nr_verify_threads++;
1246 }
1247
1248 pthread_attr_destroy(&attr);
1249
1250 if (i != td->o.verify_async) {
1251 log_err("fio: only %d verify threads started, exiting\n", i);
1252 td->verify_thread_exit = 1;
1253 write_barrier();
1254 pthread_cond_broadcast(&td->verify_cond);
1255 return 1;
1256 }
1257
1258 return 0;
1259}
1260
1261void verify_async_exit(struct thread_data *td)
1262{
1263 td->verify_thread_exit = 1;
1264 write_barrier();
1265 pthread_cond_broadcast(&td->verify_cond);
1266
1267 pthread_mutex_lock(&td->io_u_lock);
1268
1269 while (td->nr_verify_threads)
1270 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1271
1272 pthread_mutex_unlock(&td->io_u_lock);
1273 free(td->verify_threads);
1274 td->verify_threads = NULL;
1275}
fio - Flexible IO Tester