2 * IO verification helpers
11 #include "arch/arch.h"
16 #include "lib/hweight.h"
17 #include "lib/pattern.h"
18 #include "oslib/asprintf.h"
21 #include "crc/crc64.h"
22 #include "crc/crc32.h"
23 #include "crc/crc32c.h"
24 #include "crc/crc16.h"
26 #include "crc/sha256.h"
27 #include "crc/sha512.h"
29 #include "crc/xxhash.h"
32 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
33 struct verify_header *hdr, unsigned int header_num,
34 unsigned int header_len);
35 static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
36 struct verify_header *hdr, unsigned int header_num,
37 unsigned int header_len, uint64_t rand_seed);
39 void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
41 (void)cpy_pattern(td->o.buffer_pattern, td->o.buffer_pattern_bytes, p, len);
44 static void __fill_buffer(struct thread_options *o, uint64_t seed, void *p,
47 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
50 void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
51 struct io_u *io_u, uint64_t seed, int use_seed)
53 struct thread_options *o = &td->o;
55 if (!o->verify_pattern_bytes) {
56 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
59 seed = __rand(&td->verify_state);
60 if (sizeof(int) != sizeof(long *))
61 seed *= (unsigned long)__rand(&td->verify_state);
63 io_u->rand_seed = seed;
64 __fill_buffer(o, seed, p, len);
68 /* Skip if we were here and we do not need to patch pattern
70 if (!td->o.verify_fmt_sz && io_u->buf_filled_len >= len) {
71 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
72 o->verify_pattern_bytes, len);
76 (void)paste_format(td->o.verify_pattern, td->o.verify_pattern_bytes,
77 td->o.verify_fmt, td->o.verify_fmt_sz,
79 io_u->buf_filled_len = len;
82 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
87 * If we use bs_unaligned, buflen can be larger than the verify
88 * interval (which just defaults to the smallest blocksize possible).
90 hdr_inc = io_u->buflen;
91 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen &&
93 hdr_inc = td->o.verify_interval;
98 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
99 uint64_t seed, int use_seed)
101 unsigned int hdr_inc, header_num;
102 struct verify_header *hdr;
105 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
107 hdr_inc = get_hdr_inc(td, io_u);
109 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
111 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
116 static void memswp(void *buf1, void *buf2, unsigned int len)
120 assert(len <= sizeof(swap));
122 memcpy(&swap, buf1, len);
123 memcpy(buf1, buf2, len);
124 memcpy(buf2, &swap, len);
127 static void hexdump(void *buffer, int len)
129 unsigned char *p = buffer;
132 for (i = 0; i < len; i++)
133 log_err("%02x", p[i]);
138 * Prepare for separation of verify_header and checksum header
140 static inline unsigned int __hdr_size(int verify_type)
142 unsigned int len = 0;
144 switch (verify_type) {
146 case VERIFY_HDR_ONLY:
152 len = sizeof(struct vhdr_md5);
155 len = sizeof(struct vhdr_crc64);
159 case VERIFY_CRC32C_INTEL:
160 len = sizeof(struct vhdr_crc32);
163 len = sizeof(struct vhdr_crc16);
166 len = sizeof(struct vhdr_crc7);
169 len = sizeof(struct vhdr_sha256);
172 len = sizeof(struct vhdr_sha512);
174 case VERIFY_SHA3_224:
175 len = sizeof(struct vhdr_sha3_224);
177 case VERIFY_SHA3_256:
178 len = sizeof(struct vhdr_sha3_256);
180 case VERIFY_SHA3_384:
181 len = sizeof(struct vhdr_sha3_384);
183 case VERIFY_SHA3_512:
184 len = sizeof(struct vhdr_sha3_512);
187 len = sizeof(struct vhdr_xxhash);
190 len = sizeof(struct vhdr_sha1);
192 case VERIFY_PATTERN_NO_HDR:
195 log_err("fio: unknown verify header!\n");
199 return len + sizeof(struct verify_header);
202 static inline unsigned int hdr_size(struct thread_data *td,
203 struct verify_header *hdr)
205 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
208 return __hdr_size(hdr->verify_type);
211 static void *hdr_priv(struct verify_header *hdr)
215 return priv + sizeof(struct verify_header);
219 * Verify container, pass info to verify handlers and allow them to
220 * pass info back in case of error
227 unsigned int hdr_num;
228 struct thread_data *td;
231 * Output, only valid in case of error
236 unsigned int crc_len;
239 #define DUMP_BUF_SZ 255
241 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
242 const char *type, struct fio_file *f)
245 char sep[2] = { FIO_OS_PATH_SEPARATOR, 0 };
248 ptr = strdup(f->file_name);
250 if (asprintf(&fname, "%s%s%s.%llu.%s", aux_path ? : "",
251 aux_path ? sep : "", basename(ptr), offset, type) < 0) {
252 if (!fio_did_warn(FIO_WARN_VERIFY_BUF))
253 log_err("fio: not enough memory for dump buffer filename\n");
257 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
259 perror("open verify buf file");
264 ret = write(fd, buf, len);
268 perror("write verify buf file");
276 log_err(" %s data dumped as %s\n", type, fname);
286 * Dump the contents of the read block and re-generate the correct data
289 static void __dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
291 struct thread_data *td = vc->td;
292 struct io_u *io_u = vc->io_u;
293 unsigned long hdr_offset;
297 if (!td->o.verify_dump)
301 * Dump the contents we just read off disk
303 hdr_offset = vc->hdr_num * hdr->len;
305 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->verify_offset + hdr_offset,
306 "received", vc->io_u->file);
309 * Allocate a new buf and re-generate the original data
311 buf = malloc(io_u->buflen);
314 dummy.rand_seed = hdr->rand_seed;
315 dummy.buf_filled_len = 0;
316 dummy.buflen = io_u->buflen;
318 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
320 dump_buf(buf + hdr_offset, hdr->len, io_u->verify_offset + hdr_offset,
321 "expected", vc->io_u->file);
325 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
327 struct thread_data *td = vc->td;
328 struct verify_header shdr;
330 if (td->o.verify == VERIFY_PATTERN_NO_HDR) {
331 __fill_hdr(td, vc->io_u, &shdr, 0, vc->io_u->buflen, 0);
335 __dump_verify_buffers(hdr, vc);
338 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
340 unsigned long long offset;
342 offset = vc->io_u->verify_offset;
343 offset += vc->hdr_num * hdr->len;
344 log_err("%.8s: verify failed at file %s offset %llu, length %u"
345 " (requested block: offset=%llu, length=%llu, flags=%x)\n",
346 vc->name, vc->io_u->file->file_name, offset, hdr->len,
347 vc->io_u->verify_offset, vc->io_u->buflen, vc->io_u->flags);
349 if (vc->good_crc && vc->bad_crc) {
350 log_err(" Expected CRC: ");
351 hexdump(vc->good_crc, vc->crc_len);
352 log_err(" Received CRC: ");
353 hexdump(vc->bad_crc, vc->crc_len);
356 dump_verify_buffers(hdr, vc);
360 * Return data area 'header_num'
362 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
364 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(vc->td, hdr);
367 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
369 struct thread_data *td = vc->td;
370 struct io_u *io_u = vc->io_u;
372 unsigned int header_size = __hdr_size(td->o.verify);
373 unsigned int len, mod, i, pattern_size;
376 pattern = td->o.verify_pattern;
377 pattern_size = td->o.verify_pattern_bytes;
378 assert(pattern_size != 0);
380 (void)paste_format_inplace(pattern, pattern_size,
381 td->o.verify_fmt, td->o.verify_fmt_sz, io_u);
383 buf = (char *) hdr + header_size;
384 len = get_hdr_inc(td, io_u) - header_size;
385 mod = (get_hdr_inc(td, io_u) * vc->hdr_num + header_size) % pattern_size;
387 rc = cmp_pattern(pattern, pattern_size, mod, buf, len);
391 /* Slow path, compare each byte */
392 for (i = 0; i < len; i++) {
393 if (buf[i] != pattern[mod]) {
396 bits = hweight8(buf[i] ^ pattern[mod]);
397 log_err("fio: got pattern '%02x', wanted '%02x'. Bad bits %d\n",
398 (unsigned char)buf[i],
399 (unsigned char)pattern[mod],
401 log_err("fio: bad pattern block offset %u\n",
403 vc->name = "pattern";
404 log_verify_failure(hdr, vc);
408 if (mod == td->o.verify_pattern_bytes)
412 /* Unreachable line */
417 static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
419 void *p = io_u_verify_off(hdr, vc);
420 struct vhdr_xxhash *vh = hdr_priv(hdr);
424 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
426 state = XXH32_init(1);
427 XXH32_update(state, p, hdr->len - hdr_size(vc->td, hdr));
428 hash = XXH32_digest(state);
430 if (vh->hash == hash)
434 vc->good_crc = &vh->hash;
436 vc->crc_len = sizeof(hash);
437 log_verify_failure(hdr, vc);
441 static int verify_io_u_sha3(struct verify_header *hdr, struct vcont *vc,
442 struct fio_sha3_ctx *sha3_ctx, uint8_t *sha,
443 unsigned int sha_size, const char *name)
445 void *p = io_u_verify_off(hdr, vc);
447 dprint(FD_VERIFY, "%s verify io_u %p, len %u\n", name, vc->io_u, hdr->len);
449 fio_sha3_update(sha3_ctx, p, hdr->len - hdr_size(vc->td, hdr));
450 fio_sha3_final(sha3_ctx);
452 if (!memcmp(sha, sha3_ctx->sha, sha_size))
457 vc->bad_crc = sha3_ctx->sha;
458 vc->crc_len = sha_size;
459 log_verify_failure(hdr, vc);
463 static int verify_io_u_sha3_224(struct verify_header *hdr, struct vcont *vc)
465 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
466 uint8_t sha[SHA3_224_DIGEST_SIZE];
467 struct fio_sha3_ctx sha3_ctx = {
471 fio_sha3_224_init(&sha3_ctx);
473 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
474 SHA3_224_DIGEST_SIZE, "sha3-224");
477 static int verify_io_u_sha3_256(struct verify_header *hdr, struct vcont *vc)
479 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
480 uint8_t sha[SHA3_256_DIGEST_SIZE];
481 struct fio_sha3_ctx sha3_ctx = {
485 fio_sha3_256_init(&sha3_ctx);
487 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
488 SHA3_256_DIGEST_SIZE, "sha3-256");
491 static int verify_io_u_sha3_384(struct verify_header *hdr, struct vcont *vc)
493 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
494 uint8_t sha[SHA3_384_DIGEST_SIZE];
495 struct fio_sha3_ctx sha3_ctx = {
499 fio_sha3_384_init(&sha3_ctx);
501 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
502 SHA3_384_DIGEST_SIZE, "sha3-384");
505 static int verify_io_u_sha3_512(struct verify_header *hdr, struct vcont *vc)
507 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
508 uint8_t sha[SHA3_512_DIGEST_SIZE];
509 struct fio_sha3_ctx sha3_ctx = {
513 fio_sha3_512_init(&sha3_ctx);
515 return verify_io_u_sha3(hdr, vc, &sha3_ctx, vh->sha,
516 SHA3_512_DIGEST_SIZE, "sha3-512");
519 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
521 void *p = io_u_verify_off(hdr, vc);
522 struct vhdr_sha512 *vh = hdr_priv(hdr);
524 struct fio_sha512_ctx sha512_ctx = {
528 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
530 fio_sha512_init(&sha512_ctx);
531 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(vc->td, hdr));
533 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
537 vc->good_crc = vh->sha512;
538 vc->bad_crc = sha512_ctx.buf;
539 vc->crc_len = sizeof(vh->sha512);
540 log_verify_failure(hdr, vc);
544 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
546 void *p = io_u_verify_off(hdr, vc);
547 struct vhdr_sha256 *vh = hdr_priv(hdr);
549 struct fio_sha256_ctx sha256_ctx = {
553 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
555 fio_sha256_init(&sha256_ctx);
556 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(vc->td, hdr));
557 fio_sha256_final(&sha256_ctx);
559 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
563 vc->good_crc = vh->sha256;
564 vc->bad_crc = sha256_ctx.buf;
565 vc->crc_len = sizeof(vh->sha256);
566 log_verify_failure(hdr, vc);
570 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
572 void *p = io_u_verify_off(hdr, vc);
573 struct vhdr_sha1 *vh = hdr_priv(hdr);
575 struct fio_sha1_ctx sha1_ctx = {
579 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
581 fio_sha1_init(&sha1_ctx);
582 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(vc->td, hdr));
583 fio_sha1_final(&sha1_ctx);
585 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
589 vc->good_crc = vh->sha1;
590 vc->bad_crc = sha1_ctx.H;
591 vc->crc_len = sizeof(vh->sha1);
592 log_verify_failure(hdr, vc);
596 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
598 void *p = io_u_verify_off(hdr, vc);
599 struct vhdr_crc7 *vh = hdr_priv(hdr);
602 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
604 c = fio_crc7(p, hdr->len - hdr_size(vc->td, hdr));
610 vc->good_crc = &vh->crc7;
613 log_verify_failure(hdr, vc);
617 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
619 void *p = io_u_verify_off(hdr, vc);
620 struct vhdr_crc16 *vh = hdr_priv(hdr);
623 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
625 c = fio_crc16(p, hdr->len - hdr_size(vc->td, hdr));
631 vc->good_crc = &vh->crc16;
634 log_verify_failure(hdr, vc);
638 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
640 void *p = io_u_verify_off(hdr, vc);
641 struct vhdr_crc64 *vh = hdr_priv(hdr);
642 unsigned long long c;
644 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
646 c = fio_crc64(p, hdr->len - hdr_size(vc->td, hdr));
652 vc->good_crc = &vh->crc64;
655 log_verify_failure(hdr, vc);
659 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
661 void *p = io_u_verify_off(hdr, vc);
662 struct vhdr_crc32 *vh = hdr_priv(hdr);
665 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
667 c = fio_crc32(p, hdr->len - hdr_size(vc->td, hdr));
673 vc->good_crc = &vh->crc32;
676 log_verify_failure(hdr, vc);
680 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
682 void *p = io_u_verify_off(hdr, vc);
683 struct vhdr_crc32 *vh = hdr_priv(hdr);
686 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
688 c = fio_crc32c(p, hdr->len - hdr_size(vc->td, hdr));
694 vc->good_crc = &vh->crc32;
697 log_verify_failure(hdr, vc);
701 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
703 void *p = io_u_verify_off(hdr, vc);
704 struct vhdr_md5 *vh = hdr_priv(hdr);
705 uint32_t hash[MD5_HASH_WORDS];
706 struct fio_md5_ctx md5_ctx = {
710 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
712 fio_md5_init(&md5_ctx);
713 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(vc->td, hdr));
714 fio_md5_final(&md5_ctx);
716 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
720 vc->good_crc = vh->md5_digest;
721 vc->bad_crc = md5_ctx.hash;
722 vc->crc_len = sizeof(hash);
723 log_verify_failure(hdr, vc);
728 * Push IO verification to a separate thread
730 int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
732 struct io_u *io_u = *io_u_ptr;
734 pthread_mutex_lock(&td->io_u_lock);
737 put_file_log(td, io_u->file);
739 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
741 io_u_clear(td, io_u, IO_U_F_IN_CUR_DEPTH);
743 flist_add_tail(&io_u->verify_list, &td->verify_list);
746 pthread_cond_signal(&td->verify_cond);
747 pthread_mutex_unlock(&td->io_u_lock);
752 * Thanks Rusty, for spending the time so I don't have to.
754 * http://rusty.ozlabs.org/?p=560
756 static int mem_is_zero(const void *data, size_t length)
758 const unsigned char *p = data;
761 /* Check first 16 bytes manually */
762 for (len = 0; len < 16; len++) {
771 /* Now we know that's zero, memcmp with self. */
772 return memcmp(data, p, length) == 0;
775 static int mem_is_zero_slow(const void *data, size_t length, size_t *offset)
777 const unsigned char *p = data;
791 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
795 if (!td->o.trim_zero)
798 if (mem_is_zero(io_u->buf, io_u->buflen))
801 mem_is_zero_slow(io_u->buf, io_u->buflen, &offset);
803 log_err("trim: verify failed at file %s offset %llu, length %llu"
804 ", block offset %lu\n",
805 io_u->file->file_name, io_u->verify_offset, io_u->buflen,
806 (unsigned long) offset);
810 static int verify_header(struct io_u *io_u, struct thread_data *td,
811 struct verify_header *hdr, unsigned int hdr_num,
812 unsigned int hdr_len)
817 if (hdr->magic != FIO_HDR_MAGIC) {
818 log_err("verify: bad magic header %x, wanted %x",
819 hdr->magic, FIO_HDR_MAGIC);
822 if (hdr->len != hdr_len) {
823 log_err("verify: bad header length %u, wanted %u",
827 if (hdr->rand_seed != io_u->rand_seed) {
828 log_err("verify: bad header rand_seed %"PRIu64
830 hdr->rand_seed, io_u->rand_seed);
833 if (hdr->offset != io_u->verify_offset + hdr_num * td->o.verify_interval) {
834 log_err("verify: bad header offset %"PRIu64
836 hdr->offset, io_u->verify_offset);
841 * For read-only workloads, the program cannot be certain of the
842 * last numberio written to a block. Checking of numberio will be
843 * done only for workloads that write data. For verify_only,
844 * numberio check is skipped.
846 if (td_write(td) && (td_min_bs(td) == td_max_bs(td)) &&
848 if (!td->o.verify_only)
849 if (hdr->numberio != io_u->numberio) {
850 log_err("verify: bad header numberio %"PRIu16
852 hdr->numberio, io_u->numberio);
856 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
857 if (crc != hdr->crc32) {
858 log_err("verify: bad header crc %x, calculated %x",
865 log_err(" at file %s offset %llu, length %u"
866 " (requested block: offset=%llu, length=%llu)\n",
867 io_u->file->file_name,
868 io_u->verify_offset + hdr_num * hdr_len, hdr_len,
869 io_u->verify_offset, io_u->buflen);
871 if (td->o.verify_dump)
872 dump_buf(p, hdr_len, io_u->verify_offset + hdr_num * hdr_len,
873 "hdr_fail", io_u->file);
878 int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
880 struct verify_header *hdr;
881 struct io_u *io_u = *io_u_ptr;
882 unsigned int header_size, hdr_inc, hdr_num = 0;
886 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
889 * If the IO engine is faking IO (like null), then just pretend
890 * we verified everything.
892 if (td_ioengine_flagged(td, FIO_FAKEIO))
895 if (io_u->flags & IO_U_F_TRIMMED) {
896 ret = verify_trimmed_io_u(td, io_u);
900 hdr_inc = get_hdr_inc(td, io_u);
903 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
904 p += hdr_inc, hdr_num++) {
910 unsigned int verify_type;
912 if (ret && td->o.verify_fatal)
915 header_size = __hdr_size(td->o.verify);
916 if (td->o.verify_offset)
917 memswp(p, p + td->o.verify_offset, header_size);
921 * Make rand_seed check pass when have verify_backlog or
922 * zone reset frequency for zonemode=zbd.
924 if (!td_rw(td) || (td->flags & TD_F_VER_BACKLOG) ||
926 io_u->rand_seed = hdr->rand_seed;
928 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
929 ret = verify_header(io_u, td, hdr, hdr_num, hdr_inc);
934 if (td->o.verify != VERIFY_NONE)
935 verify_type = td->o.verify;
937 verify_type = hdr->verify_type;
939 switch (verify_type) {
940 case VERIFY_HDR_ONLY:
941 /* Header is always verified, check if pattern is left
942 * for verification. */
943 if (td->o.verify_pattern_bytes)
944 ret = verify_io_u_pattern(hdr, &vc);
947 ret = verify_io_u_md5(hdr, &vc);
950 ret = verify_io_u_crc64(hdr, &vc);
953 case VERIFY_CRC32C_INTEL:
954 ret = verify_io_u_crc32c(hdr, &vc);
957 ret = verify_io_u_crc32(hdr, &vc);
960 ret = verify_io_u_crc16(hdr, &vc);
963 ret = verify_io_u_crc7(hdr, &vc);
966 ret = verify_io_u_sha256(hdr, &vc);
969 ret = verify_io_u_sha512(hdr, &vc);
971 case VERIFY_SHA3_224:
972 ret = verify_io_u_sha3_224(hdr, &vc);
974 case VERIFY_SHA3_256:
975 ret = verify_io_u_sha3_256(hdr, &vc);
977 case VERIFY_SHA3_384:
978 ret = verify_io_u_sha3_384(hdr, &vc);
980 case VERIFY_SHA3_512:
981 ret = verify_io_u_sha3_512(hdr, &vc);
984 ret = verify_io_u_xxhash(hdr, &vc);
987 ret = verify_io_u_sha1(hdr, &vc);
990 case VERIFY_PATTERN_NO_HDR:
991 ret = verify_io_u_pattern(hdr, &vc);
994 log_err("Bad verify type %u\n", hdr->verify_type);
998 if (ret && verify_type != hdr->verify_type)
999 log_err("fio: verify type mismatch (%u media, %u given)\n",
1000 hdr->verify_type, verify_type);
1004 if (ret && td->o.verify_fatal)
1005 fio_mark_td_terminate(td);
1010 static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
1012 struct vhdr_xxhash *vh = hdr_priv(hdr);
1015 state = XXH32_init(1);
1016 XXH32_update(state, p, len);
1017 vh->hash = XXH32_digest(state);
1020 static void fill_sha3(struct fio_sha3_ctx *sha3_ctx, void *p, unsigned int len)
1022 fio_sha3_update(sha3_ctx, p, len);
1023 fio_sha3_final(sha3_ctx);
1026 static void fill_sha3_224(struct verify_header *hdr, void *p, unsigned int len)
1028 struct vhdr_sha3_224 *vh = hdr_priv(hdr);
1029 struct fio_sha3_ctx sha3_ctx = {
1033 fio_sha3_224_init(&sha3_ctx);
1034 fill_sha3(&sha3_ctx, p, len);
1037 static void fill_sha3_256(struct verify_header *hdr, void *p, unsigned int len)
1039 struct vhdr_sha3_256 *vh = hdr_priv(hdr);
1040 struct fio_sha3_ctx sha3_ctx = {
1044 fio_sha3_256_init(&sha3_ctx);
1045 fill_sha3(&sha3_ctx, p, len);
1048 static void fill_sha3_384(struct verify_header *hdr, void *p, unsigned int len)
1050 struct vhdr_sha3_384 *vh = hdr_priv(hdr);
1051 struct fio_sha3_ctx sha3_ctx = {
1055 fio_sha3_384_init(&sha3_ctx);
1056 fill_sha3(&sha3_ctx, p, len);
1059 static void fill_sha3_512(struct verify_header *hdr, void *p, unsigned int len)
1061 struct vhdr_sha3_512 *vh = hdr_priv(hdr);
1062 struct fio_sha3_ctx sha3_ctx = {
1066 fio_sha3_512_init(&sha3_ctx);
1067 fill_sha3(&sha3_ctx, p, len);
1070 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
1072 struct vhdr_sha512 *vh = hdr_priv(hdr);
1073 struct fio_sha512_ctx sha512_ctx = {
1077 fio_sha512_init(&sha512_ctx);
1078 fio_sha512_update(&sha512_ctx, p, len);
1081 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
1083 struct vhdr_sha256 *vh = hdr_priv(hdr);
1084 struct fio_sha256_ctx sha256_ctx = {
1088 fio_sha256_init(&sha256_ctx);
1089 fio_sha256_update(&sha256_ctx, p, len);
1090 fio_sha256_final(&sha256_ctx);
1093 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
1095 struct vhdr_sha1 *vh = hdr_priv(hdr);
1096 struct fio_sha1_ctx sha1_ctx = {
1100 fio_sha1_init(&sha1_ctx);
1101 fio_sha1_update(&sha1_ctx, p, len);
1102 fio_sha1_final(&sha1_ctx);
1105 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
1107 struct vhdr_crc7 *vh = hdr_priv(hdr);
1109 vh->crc7 = fio_crc7(p, len);
1112 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
1114 struct vhdr_crc16 *vh = hdr_priv(hdr);
1116 vh->crc16 = fio_crc16(p, len);
1119 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
1121 struct vhdr_crc32 *vh = hdr_priv(hdr);
1123 vh->crc32 = fio_crc32(p, len);
1126 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
1128 struct vhdr_crc32 *vh = hdr_priv(hdr);
1130 vh->crc32 = fio_crc32c(p, len);
1133 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
1135 struct vhdr_crc64 *vh = hdr_priv(hdr);
1137 vh->crc64 = fio_crc64(p, len);
1140 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
1142 struct vhdr_md5 *vh = hdr_priv(hdr);
1143 struct fio_md5_ctx md5_ctx = {
1144 .hash = (uint32_t *) vh->md5_digest,
1147 fio_md5_init(&md5_ctx);
1148 fio_md5_update(&md5_ctx, p, len);
1149 fio_md5_final(&md5_ctx);
1152 static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
1153 struct verify_header *hdr, unsigned int header_num,
1154 unsigned int header_len, uint64_t rand_seed)
1158 hdr->magic = FIO_HDR_MAGIC;
1159 hdr->verify_type = td->o.verify;
1160 hdr->len = header_len;
1161 hdr->rand_seed = rand_seed;
1162 hdr->offset = io_u->verify_offset + header_num * td->o.verify_interval;
1163 hdr->time_sec = io_u->start_time.tv_sec;
1164 hdr->time_nsec = io_u->start_time.tv_nsec;
1165 hdr->thread = td->thread_number;
1166 hdr->numberio = io_u->numberio;
1167 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
1171 static void fill_hdr(struct thread_data *td, struct io_u *io_u,
1172 struct verify_header *hdr, unsigned int header_num,
1173 unsigned int header_len, uint64_t rand_seed)
1175 if (td->o.verify != VERIFY_PATTERN_NO_HDR)
1176 __fill_hdr(td, io_u, hdr, header_num, header_len, rand_seed);
1179 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
1180 struct verify_header *hdr, unsigned int header_num,
1181 unsigned int header_len)
1183 unsigned int data_len;
1189 fill_hdr(td, io_u, hdr, header_num, header_len, io_u->rand_seed);
1191 if (header_len <= hdr_size(td, hdr)) {
1192 td_verror(td, EINVAL, "Blocksize too small");
1195 data_len = header_len - hdr_size(td, hdr);
1197 data = p + hdr_size(td, hdr);
1198 switch (td->o.verify) {
1200 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
1202 fill_md5(hdr, data, data_len);
1205 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1207 fill_crc64(hdr, data, data_len);
1210 case VERIFY_CRC32C_INTEL:
1211 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1213 fill_crc32c(hdr, data, data_len);
1216 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1218 fill_crc32(hdr, data, data_len);
1221 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1223 fill_crc16(hdr, data, data_len);
1226 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1228 fill_crc7(hdr, data, data_len);
1231 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1233 fill_sha256(hdr, data, data_len);
1236 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1238 fill_sha512(hdr, data, data_len);
1240 case VERIFY_SHA3_224:
1241 dprint(FD_VERIFY, "fill sha3-224 io_u %p, len %u\n",
1243 fill_sha3_224(hdr, data, data_len);
1245 case VERIFY_SHA3_256:
1246 dprint(FD_VERIFY, "fill sha3-256 io_u %p, len %u\n",
1248 fill_sha3_256(hdr, data, data_len);
1250 case VERIFY_SHA3_384:
1251 dprint(FD_VERIFY, "fill sha3-384 io_u %p, len %u\n",
1253 fill_sha3_384(hdr, data, data_len);
1255 case VERIFY_SHA3_512:
1256 dprint(FD_VERIFY, "fill sha3-512 io_u %p, len %u\n",
1258 fill_sha3_512(hdr, data, data_len);
1261 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1263 fill_xxhash(hdr, data, data_len);
1266 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1268 fill_sha1(hdr, data, data_len);
1270 case VERIFY_HDR_ONLY:
1271 case VERIFY_PATTERN:
1272 case VERIFY_PATTERN_NO_HDR:
1273 /* nothing to do here */
1276 log_err("fio: bad verify type: %d\n", td->o.verify);
1280 if (td->o.verify_offset && hdr_size(td, hdr))
1281 memswp(p, p + td->o.verify_offset, hdr_size(td, hdr));
1285 * fill body of io_u->buf with random data and add a header with the
1286 * checksum of choice
1288 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1290 if (td->o.verify == VERIFY_NULL)
1293 fill_pattern_headers(td, io_u, 0, 0);
1296 int get_next_verify(struct thread_data *td, struct io_u *io_u)
1298 struct io_piece *ipo = NULL;
1301 * this io_u is from a requeue, we already filled the offsets
1306 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1307 struct fio_rb_node *n = rb_first(&td->io_hist_tree);
1309 ipo = rb_entry(n, struct io_piece, rb_node);
1312 * Ensure that the associated IO has completed
1314 if (atomic_load_acquire(&ipo->flags) & IP_F_IN_FLIGHT)
1317 rb_erase(n, &td->io_hist_tree);
1318 assert(ipo->flags & IP_F_ONRB);
1319 ipo->flags &= ~IP_F_ONRB;
1320 } else if (!flist_empty(&td->io_hist_list)) {
1321 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1324 * Ensure that the associated IO has completed
1326 if (atomic_load_acquire(&ipo->flags) & IP_F_IN_FLIGHT)
1329 flist_del(&ipo->list);
1330 assert(ipo->flags & IP_F_ONLIST);
1331 ipo->flags &= ~IP_F_ONLIST;
1337 io_u->offset = ipo->offset;
1338 io_u->verify_offset = ipo->offset;
1339 io_u->buflen = ipo->len;
1340 io_u->numberio = ipo->numberio;
1341 io_u->file = ipo->file;
1342 io_u_set(td, io_u, IO_U_F_VER_LIST);
1344 if (ipo->flags & IP_F_TRIMMED)
1345 io_u_set(td, io_u, IO_U_F_TRIMMED);
1347 if (!fio_file_open(io_u->file)) {
1348 int r = td_io_open_file(td, io_u->file);
1351 dprint(FD_VERIFY, "failed file %s open\n",
1352 io_u->file->file_name);
1357 get_file(ipo->file);
1358 assert(fio_file_open(io_u->file));
1359 io_u->ddir = DDIR_READ;
1360 io_u->xfer_buf = io_u->buf;
1361 io_u->xfer_buflen = io_u->buflen;
1363 remove_trim_entry(td, ipo);
1365 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1367 if (!td->o.verify_pattern_bytes) {
1368 io_u->rand_seed = __rand(&td->verify_state);
1369 if (sizeof(int) != sizeof(long *))
1370 io_u->rand_seed *= __rand(&td->verify_state);
1376 dprint(FD_VERIFY, "get_next_verify: empty\n");
1380 void fio_verify_init(struct thread_data *td)
1382 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1383 td->o.verify == VERIFY_CRC32C) {
1384 crc32c_arm64_probe();
1385 crc32c_intel_probe();
1389 static void *verify_async_thread(void *data)
1391 struct thread_data *td = data;
1395 if (fio_option_is_set(&td->o, verify_cpumask) &&
1396 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1397 log_err("fio: failed setting verify thread affinity\n");
1405 if (td->verify_thread_exit)
1408 pthread_mutex_lock(&td->io_u_lock);
1410 while (flist_empty(&td->verify_list) &&
1411 !td->verify_thread_exit) {
1412 ret = pthread_cond_wait(&td->verify_cond,
1419 flist_splice_init(&td->verify_list, &list);
1420 pthread_mutex_unlock(&td->io_u_lock);
1422 if (flist_empty(&list))
1425 while (!flist_empty(&list)) {
1426 io_u = flist_first_entry(&list, struct io_u, verify_list);
1427 flist_del_init(&io_u->verify_list);
1429 io_u_set(td, io_u, IO_U_F_NO_FILE_PUT);
1430 ret = verify_io_u(td, &io_u);
1435 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1436 update_error_count(td, ret);
1444 td_verror(td, ret, "async_verify");
1445 if (td->o.verify_fatal)
1446 fio_mark_td_terminate(td);
1450 pthread_mutex_lock(&td->io_u_lock);
1451 td->nr_verify_threads--;
1452 pthread_cond_signal(&td->free_cond);
1453 pthread_mutex_unlock(&td->io_u_lock);
1458 int verify_async_init(struct thread_data *td)
1461 pthread_attr_t attr;
1463 pthread_attr_init(&attr);
1464 pthread_attr_setstacksize(&attr, 2 * PTHREAD_STACK_MIN);
1466 td->verify_thread_exit = 0;
1468 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1469 for (i = 0; i < td->o.verify_async; i++) {
1470 ret = pthread_create(&td->verify_threads[i], &attr,
1471 verify_async_thread, td);
1473 log_err("fio: async verify creation failed: %s\n",
1477 ret = pthread_detach(td->verify_threads[i]);
1479 log_err("fio: async verify thread detach failed: %s\n",
1483 td->nr_verify_threads++;
1486 pthread_attr_destroy(&attr);
1488 if (i != td->o.verify_async) {
1489 log_err("fio: only %d verify threads started, exiting\n", i);
1491 pthread_mutex_lock(&td->io_u_lock);
1492 td->verify_thread_exit = 1;
1493 pthread_cond_broadcast(&td->verify_cond);
1494 pthread_mutex_unlock(&td->io_u_lock);
1502 void verify_async_exit(struct thread_data *td)
1504 pthread_mutex_lock(&td->io_u_lock);
1505 td->verify_thread_exit = 1;
1506 pthread_cond_broadcast(&td->verify_cond);
1508 while (td->nr_verify_threads)
1509 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1511 pthread_mutex_unlock(&td->io_u_lock);
1512 free(td->verify_threads);
1513 td->verify_threads = NULL;
1516 int paste_blockoff(char *buf, unsigned int len, void *priv)
1518 struct io_u *io = priv;
1519 unsigned long long off;
1521 typecheck(__typeof__(off), io->offset);
1522 off = cpu_to_le64((uint64_t)io->offset);
1523 len = min(len, (unsigned int)sizeof(off));
1524 memcpy(buf, &off, len);
1528 static int __fill_file_completions(struct thread_data *td,
1529 struct thread_io_list *s,
1530 struct fio_file *f, unsigned int *index)
1535 if (!f->last_write_comp)
1538 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1539 comps = td->io_blocks[DDIR_WRITE];
1541 comps = td->o.iodepth;
1543 j = f->last_write_idx - 1;
1544 for (i = 0; i < comps; i++) {
1546 j = td->o.iodepth - 1;
1547 s->comps[*index].fileno = __cpu_to_le64(f->fileno);
1548 s->comps[*index].offset = cpu_to_le64(f->last_write_comp[j]);
1556 static int fill_file_completions(struct thread_data *td,
1557 struct thread_io_list *s, unsigned int *index)
1563 for_each_file(td, f, i)
1564 comps += __fill_file_completions(td, s, f, index);
1569 struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1571 struct all_io_list *rep;
1576 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1579 * Calculate reply space needed. We need one 'io_state' per thread,
1580 * and the size will vary depending on depth.
1585 if (save_mask != IO_LIST_ALL && (__td_index + 1) != save_mask)
1588 td->flags |= TD_F_VSTATE_SAVED;
1589 depth += (td->o.iodepth * td->o.nr_files);
1597 *sz += nr * sizeof(struct thread_io_list);
1598 *sz += depth * sizeof(struct file_comp);
1599 rep = calloc(1, *sz);
1601 rep->threads = cpu_to_le64((uint64_t) nr);
1603 next = &rep->state[0];
1605 struct thread_io_list *s = next;
1606 unsigned int comps, index = 0;
1608 if (save_mask != IO_LIST_ALL && (__td_index + 1) != save_mask)
1611 comps = fill_file_completions(td, s, &index);
1613 s->no_comps = cpu_to_le64((uint64_t) comps);
1614 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1615 s->nofiles = cpu_to_le64((uint64_t) td->o.nr_files);
1616 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1617 s->index = cpu_to_le64((uint64_t) __td_index);
1618 if (td->random_state.use64) {
1619 s->rand.state64.s[0] = cpu_to_le64(td->random_state.state64.s1);
1620 s->rand.state64.s[1] = cpu_to_le64(td->random_state.state64.s2);
1621 s->rand.state64.s[2] = cpu_to_le64(td->random_state.state64.s3);
1622 s->rand.state64.s[3] = cpu_to_le64(td->random_state.state64.s4);
1623 s->rand.state64.s[4] = cpu_to_le64(td->random_state.state64.s5);
1624 s->rand.state64.s[5] = 0;
1625 s->rand.use64 = cpu_to_le64((uint64_t)1);
1627 s->rand.state32.s[0] = cpu_to_le32(td->random_state.state32.s1);
1628 s->rand.state32.s[1] = cpu_to_le32(td->random_state.state32.s2);
1629 s->rand.state32.s[2] = cpu_to_le32(td->random_state.state32.s3);
1630 s->rand.state32.s[3] = 0;
1633 snprintf((char *) s->name, sizeof(s->name), "%s", td->o.name);
1634 next = io_list_next(s);
1640 static int open_state_file(const char *name, const char *prefix, int num,
1648 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1656 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1658 fd = open(out, flags, 0644);
1660 perror("fio: open state file");
1661 log_err("fio: state file: %s (for_write=%d)\n", out, for_write);
1668 static int write_thread_list_state(struct thread_io_list *s,
1671 struct verify_state_hdr hdr;
1676 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1680 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1682 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1683 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1684 hdr.crc = cpu_to_le64(crc);
1685 ret = write(fd, &hdr, sizeof(hdr));
1686 if (ret != sizeof(hdr))
1689 ret = write(fd, s, thread_io_list_sz(s));
1690 if (ret != thread_io_list_sz(s)) {
1693 perror("fio: write state file");
1694 log_err("fio: failed to write state file\n");
1703 void __verify_save_state(struct all_io_list *state, const char *prefix)
1705 struct thread_io_list *s = &state->state[0];
1708 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1709 write_thread_list_state(s, prefix);
1710 s = io_list_next(s);
1714 void verify_save_state(int mask)
1716 struct all_io_list *state;
1719 state = get_all_io_list(mask, &sz);
1721 char prefix[PATH_MAX];
1724 sprintf(prefix, "%s%clocal", aux_path, FIO_OS_PATH_SEPARATOR);
1726 strcpy(prefix, "local");
1728 __verify_save_state(state, prefix);
1733 void verify_free_state(struct thread_data *td)
1739 void verify_assign_state(struct thread_data *td, void *p)
1741 struct thread_io_list *s = p;
1744 s->no_comps = le64_to_cpu(s->no_comps);
1745 s->depth = le32_to_cpu(s->depth);
1746 s->nofiles = le32_to_cpu(s->nofiles);
1747 s->numberio = le64_to_cpu(s->numberio);
1748 s->rand.use64 = le64_to_cpu(s->rand.use64);
1750 if (s->rand.use64) {
1751 for (i = 0; i < 6; i++)
1752 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1754 for (i = 0; i < 4; i++)
1755 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1758 for (i = 0; i < s->no_comps; i++) {
1759 s->comps[i].fileno = le64_to_cpu(s->comps[i].fileno);
1760 s->comps[i].offset = le64_to_cpu(s->comps[i].offset);
1766 int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1770 hdr->version = le64_to_cpu(hdr->version);
1771 hdr->size = le64_to_cpu(hdr->size);
1772 hdr->crc = le64_to_cpu(hdr->crc);
1774 if (hdr->version != VSTATE_HDR_VERSION)
1777 crc = fio_crc32c((void *)s, hdr->size);
1778 if (crc != hdr->crc)
1784 int verify_load_state(struct thread_data *td, const char *prefix)
1786 struct verify_state_hdr hdr;
1792 if (!td->o.verify_state)
1795 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1799 ret = read(fd, &hdr, sizeof(hdr));
1800 if (ret != sizeof(hdr)) {
1802 td_verror(td, errno, "read verify state hdr");
1803 log_err("fio: failed reading verify state header\n");
1807 hdr.version = le64_to_cpu(hdr.version);
1808 hdr.size = le64_to_cpu(hdr.size);
1809 hdr.crc = le64_to_cpu(hdr.crc);
1811 if (hdr.version != VSTATE_HDR_VERSION) {
1812 log_err("fio: unsupported (%d) version in verify state header\n",
1813 (unsigned int) hdr.version);
1817 s = malloc(hdr.size);
1818 ret = read(fd, s, hdr.size);
1819 if (ret != hdr.size) {
1821 td_verror(td, errno, "read verify state");
1822 log_err("fio: failed reading verity state\n");
1826 crc = fio_crc32c(s, hdr.size);
1827 if (crc != hdr.crc) {
1828 log_err("fio: verify state is corrupt\n");
1834 verify_assign_state(td, s);
1844 * Use the loaded verify state to know when to stop doing verification
1846 int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1848 struct thread_io_list *s = td->vstate;
1849 struct fio_file *f = io_u->file;
1856 * If we're not into the window of issues - depth yet, continue. If
1857 * issue is shorter than depth, do check.
1859 if ((td->io_blocks[DDIR_READ] < s->depth ||
1860 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1861 s->numberio > s->depth)
1865 * We're in the window of having to check if this io was
1866 * completed or not. If the IO was seen as completed, then
1869 for (i = 0; i < s->no_comps; i++) {
1870 if (s->comps[i].fileno != f->fileno)
1872 if (io_u->verify_offset == s->comps[i].offset)
1877 * Not found, we have to stop