2 * IO verification helpers
15 #include "lib/hweight.h"
18 #include "crc/crc64.h"
19 #include "crc/crc32.h"
20 #include "crc/crc32c.h"
21 #include "crc/crc16.h"
23 #include "crc/sha256.h"
24 #include "crc/sha512.h"
27 static 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);
31 static void fill_pattern(struct thread_data *td, void *p, unsigned int len,
32 char *pattern, unsigned int pattern_bytes)
34 switch (pattern_bytes) {
39 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
40 memset(p, pattern[0], len);
43 unsigned int i = 0, size = 0;
46 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
53 memcpy(b+i, pattern, size);
61 void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
63 fill_pattern(td, p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes);
66 void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
67 struct io_u *io_u, unsigned long seed, int use_seed)
69 if (!td->o.verify_pattern_bytes) {
70 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
73 __fill_random_buf(p, len, seed);
75 io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);
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);
85 fill_pattern(td, p, len, td->o.verify_pattern, td->o.verify_pattern_bytes);
87 io_u->buf_filled_len = len;
90 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
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;
101 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
102 unsigned long seed, int use_seed)
104 unsigned int hdr_inc, header_num;
105 struct verify_header *hdr;
108 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
110 hdr_inc = get_hdr_inc(td, io_u);
112 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
114 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
119 static void memswp(void *buf1, void *buf2, unsigned int len)
123 assert(len <= sizeof(swap));
125 memcpy(&swap, buf1, len);
126 memcpy(buf1, buf2, len);
127 memcpy(buf2, &swap, len);
130 static void hexdump(void *buffer, int len)
132 unsigned char *p = buffer;
135 for (i = 0; i < len; i++)
136 log_err("%02x", p[i]);
141 * Prepare for separation of verify_header and checksum header
143 static inline unsigned int __hdr_size(int verify_type)
145 unsigned int len = 0;
147 switch (verify_type) {
153 len = sizeof(struct vhdr_md5);
156 len = sizeof(struct vhdr_crc64);
160 case VERIFY_CRC32C_INTEL:
161 len = sizeof(struct vhdr_crc32);
164 len = sizeof(struct vhdr_crc16);
167 len = sizeof(struct vhdr_crc7);
170 len = sizeof(struct vhdr_sha256);
173 len = sizeof(struct vhdr_sha512);
176 len = sizeof(struct vhdr_meta);
179 len = sizeof(struct vhdr_sha1);
185 log_err("fio: unknown verify header!\n");
189 return len + sizeof(struct verify_header);
192 static inline unsigned int hdr_size(struct verify_header *hdr)
194 return __hdr_size(hdr->verify_type);
197 static void *hdr_priv(struct verify_header *hdr)
201 return priv + sizeof(struct verify_header);
205 * Verify container, pass info to verify handlers and allow them to
206 * pass info back in case of error
213 unsigned int hdr_num;
214 struct thread_data *td;
217 * Output, only valid in case of error
222 unsigned int crc_len;
225 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
226 const char *type, struct fio_file *f)
228 char *ptr, fname[256];
231 ptr = strdup(f->file_name);
232 strcpy(fname, basename(ptr));
234 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
236 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
238 perror("open verify buf file");
243 ret = write(fd, buf, len);
247 perror("write verify buf file");
255 log_err(" %s data dumped as %s\n", type, fname);
260 * Dump the contents of the read block and re-generate the correct data
263 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
265 struct thread_data *td = vc->td;
266 struct io_u *io_u = vc->io_u;
267 unsigned long hdr_offset;
271 if (!td->o.verify_dump)
275 * Dump the contents we just read off disk
277 hdr_offset = vc->hdr_num * hdr->len;
279 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
280 "received", vc->io_u->file);
283 * Allocate a new buf and re-generate the original data
285 buf = malloc(io_u->buflen);
288 dummy.rand_seed = hdr->rand_seed;
289 dummy.buf_filled_len = 0;
290 dummy.buflen = io_u->buflen;
292 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
294 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
295 "expected", vc->io_u->file);
299 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
301 unsigned long long offset;
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);
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);
315 dump_verify_buffers(hdr, vc);
319 * Return data area 'header_num'
321 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
323 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
326 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
328 struct thread_data *td = vc->td;
329 struct io_u *io_u = vc->io_u;
331 unsigned int header_size = __hdr_size(td->o.verify);
332 unsigned int len, mod, i, size, pattern_size;
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;
342 for (i = 0; i < len; i += size) {
343 size = pattern_size - mod;
344 if (size > (len - i))
346 if (memcmp(buf + i, pattern + mod, size))
347 /* Let the slow compare find the first mismatch byte. */
352 for (; i < len; i++) {
353 if (buf[i] != pattern[mod]) {
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);
364 if (mod == td->o.verify_pattern_bytes)
371 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
373 struct thread_data *td = vc->td;
374 struct vhdr_meta *vh = hdr_priv(hdr);
375 struct io_u *io_u = vc->io_u;
378 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
380 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
383 if (td->o.verify_pattern_bytes)
384 ret |= verify_io_u_pattern(hdr, vc);
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 * For verify_only, numberio will be checked in the last iteration when
391 * the correct state of numberio, that would have been written to each
392 * block in a previous run of fio, has been reached.
394 if (td_write(td) || td_rw(td))
395 if (!td->o.verify_only || td->o.loops == 0)
396 if (vh->numberio != io_u->numberio)
403 log_verify_failure(hdr, vc);
407 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
409 void *p = io_u_verify_off(hdr, vc);
410 struct vhdr_sha512 *vh = hdr_priv(hdr);
412 struct fio_sha512_ctx sha512_ctx = {
416 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
418 fio_sha512_init(&sha512_ctx);
419 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
421 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
425 vc->good_crc = vh->sha512;
426 vc->bad_crc = sha512_ctx.buf;
427 vc->crc_len = sizeof(vh->sha512);
428 log_verify_failure(hdr, vc);
432 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
434 void *p = io_u_verify_off(hdr, vc);
435 struct vhdr_sha256 *vh = hdr_priv(hdr);
437 struct fio_sha256_ctx sha256_ctx = {
441 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
443 fio_sha256_init(&sha256_ctx);
444 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
446 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
450 vc->good_crc = vh->sha256;
451 vc->bad_crc = sha256_ctx.buf;
452 vc->crc_len = sizeof(vh->sha256);
453 log_verify_failure(hdr, vc);
457 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
459 void *p = io_u_verify_off(hdr, vc);
460 struct vhdr_sha1 *vh = hdr_priv(hdr);
462 struct fio_sha1_ctx sha1_ctx = {
466 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
468 fio_sha1_init(&sha1_ctx);
469 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
471 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
475 vc->good_crc = vh->sha1;
476 vc->bad_crc = sha1_ctx.H;
477 vc->crc_len = sizeof(vh->sha1);
478 log_verify_failure(hdr, vc);
482 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
484 void *p = io_u_verify_off(hdr, vc);
485 struct vhdr_crc7 *vh = hdr_priv(hdr);
488 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
490 c = fio_crc7(p, hdr->len - hdr_size(hdr));
496 vc->good_crc = &vh->crc7;
499 log_verify_failure(hdr, vc);
503 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
505 void *p = io_u_verify_off(hdr, vc);
506 struct vhdr_crc16 *vh = hdr_priv(hdr);
509 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
511 c = fio_crc16(p, hdr->len - hdr_size(hdr));
517 vc->good_crc = &vh->crc16;
520 log_verify_failure(hdr, vc);
524 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
526 void *p = io_u_verify_off(hdr, vc);
527 struct vhdr_crc64 *vh = hdr_priv(hdr);
528 unsigned long long c;
530 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
532 c = fio_crc64(p, hdr->len - hdr_size(hdr));
538 vc->good_crc = &vh->crc64;
541 log_verify_failure(hdr, vc);
545 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
547 void *p = io_u_verify_off(hdr, vc);
548 struct vhdr_crc32 *vh = hdr_priv(hdr);
551 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
553 c = fio_crc32(p, hdr->len - hdr_size(hdr));
559 vc->good_crc = &vh->crc32;
562 log_verify_failure(hdr, vc);
566 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
568 void *p = io_u_verify_off(hdr, vc);
569 struct vhdr_crc32 *vh = hdr_priv(hdr);
572 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
574 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
580 vc->good_crc = &vh->crc32;
583 log_verify_failure(hdr, vc);
587 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
589 void *p = io_u_verify_off(hdr, vc);
590 struct vhdr_md5 *vh = hdr_priv(hdr);
591 uint32_t hash[MD5_HASH_WORDS];
592 struct fio_md5_ctx md5_ctx = {
596 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
598 fio_md5_init(&md5_ctx);
599 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
601 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
605 vc->good_crc = vh->md5_digest;
606 vc->bad_crc = md5_ctx.hash;
607 vc->crc_len = sizeof(hash);
608 log_verify_failure(hdr, vc);
613 * Push IO verification to a separate thread
615 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
618 put_file_log(td, io_u->file);
620 pthread_mutex_lock(&td->io_u_lock);
622 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
624 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
626 flist_add_tail(&io_u->verify_list, &td->verify_list);
627 io_u->flags |= IO_U_F_FREE_DEF;
628 pthread_mutex_unlock(&td->io_u_lock);
630 pthread_cond_signal(&td->verify_cond);
634 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
636 static char zero_buf[1024];
637 unsigned int this_len, len;
641 if (!td->o.trim_zero)
647 this_len = sizeof(zero_buf);
650 if (memcmp(p, zero_buf, this_len)) {
661 log_err("trim: verify failed at file %s offset %llu, length %lu"
662 ", block offset %lu\n",
663 io_u->file->file_name, io_u->offset, io_u->buflen,
664 (unsigned long) (p - io_u->buf));
668 static int verify_header(struct io_u *io_u, struct verify_header *hdr)
673 if (hdr->magic != FIO_HDR_MAGIC)
675 if (hdr->len > io_u->buflen)
677 if (hdr->rand_seed != io_u->rand_seed)
680 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
681 if (crc == hdr->crc32)
683 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
687 int verify_io_u(struct thread_data *td, struct io_u *io_u)
689 struct verify_header *hdr;
690 unsigned int header_size, hdr_inc, hdr_num = 0;
694 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
696 if (io_u->flags & IO_U_F_TRIMMED) {
697 ret = verify_trimmed_io_u(td, io_u);
701 hdr_inc = get_hdr_inc(td, io_u);
704 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
705 p += hdr_inc, hdr_num++) {
711 unsigned int verify_type;
713 if (ret && td->o.verify_fatal)
716 header_size = __hdr_size(td->o.verify);
717 if (td->o.verify_offset)
718 memswp(p, p + td->o.verify_offset, header_size);
721 ret = verify_header(io_u, hdr);
726 log_err("verify: bad magic header %x, wanted %x at "
727 "file %s offset %llu, length %u\n",
728 hdr->magic, FIO_HDR_MAGIC,
729 io_u->file->file_name,
730 io_u->offset + hdr_num * hdr->len, hdr->len);
734 log_err("fio: verify header exceeds buffer length (%u "
735 "> %lu)\n", hdr->len, io_u->buflen);
739 log_err("verify: bad header rand_seed %"PRIu64
740 ", wanted %"PRIu64" at file %s offset %llu, "
742 hdr->rand_seed, io_u->rand_seed,
743 io_u->file->file_name,
744 io_u->offset + hdr_num * hdr->len, hdr->len);
751 log_err("verify: unknown header error at file %s "
752 "offset %llu, length %u\n",
753 io_u->file->file_name,
754 io_u->offset + hdr_num * hdr->len, hdr->len);
758 if (td->o.verify != VERIFY_NONE)
759 verify_type = td->o.verify;
761 verify_type = hdr->verify_type;
763 switch (verify_type) {
765 ret = verify_io_u_md5(hdr, &vc);
768 ret = verify_io_u_crc64(hdr, &vc);
771 case VERIFY_CRC32C_INTEL:
772 ret = verify_io_u_crc32c(hdr, &vc);
775 ret = verify_io_u_crc32(hdr, &vc);
778 ret = verify_io_u_crc16(hdr, &vc);
781 ret = verify_io_u_crc7(hdr, &vc);
784 ret = verify_io_u_sha256(hdr, &vc);
787 ret = verify_io_u_sha512(hdr, &vc);
790 ret = verify_io_u_meta(hdr, &vc);
793 ret = verify_io_u_sha1(hdr, &vc);
796 ret = verify_io_u_pattern(hdr, &vc);
799 log_err("Bad verify type %u\n", hdr->verify_type);
803 if (ret && verify_type != hdr->verify_type)
804 log_err("fio: verify type mismatch (%u media, %u given)\n",
805 hdr->verify_type, verify_type);
809 if (ret && td->o.verify_fatal)
815 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
816 struct io_u *io_u, unsigned int header_num)
818 struct vhdr_meta *vh = hdr_priv(hdr);
820 vh->thread = td->thread_number;
822 vh->time_sec = io_u->start_time.tv_sec;
823 vh->time_usec = io_u->start_time.tv_usec;
825 vh->numberio = io_u->numberio;
827 vh->offset = io_u->offset + header_num * td->o.verify_interval;
830 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
832 struct vhdr_sha512 *vh = hdr_priv(hdr);
833 struct fio_sha512_ctx sha512_ctx = {
837 fio_sha512_init(&sha512_ctx);
838 fio_sha512_update(&sha512_ctx, p, len);
841 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
843 struct vhdr_sha256 *vh = hdr_priv(hdr);
844 struct fio_sha256_ctx sha256_ctx = {
848 fio_sha256_init(&sha256_ctx);
849 fio_sha256_update(&sha256_ctx, p, len);
852 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
854 struct vhdr_sha1 *vh = hdr_priv(hdr);
855 struct fio_sha1_ctx sha1_ctx = {
859 fio_sha1_init(&sha1_ctx);
860 fio_sha1_update(&sha1_ctx, p, len);
863 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
865 struct vhdr_crc7 *vh = hdr_priv(hdr);
867 vh->crc7 = fio_crc7(p, len);
870 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
872 struct vhdr_crc16 *vh = hdr_priv(hdr);
874 vh->crc16 = fio_crc16(p, len);
877 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
879 struct vhdr_crc32 *vh = hdr_priv(hdr);
881 vh->crc32 = fio_crc32(p, len);
884 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
886 struct vhdr_crc32 *vh = hdr_priv(hdr);
888 vh->crc32 = fio_crc32c(p, len);
891 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
893 struct vhdr_crc64 *vh = hdr_priv(hdr);
895 vh->crc64 = fio_crc64(p, len);
898 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
900 struct vhdr_md5 *vh = hdr_priv(hdr);
901 struct fio_md5_ctx md5_ctx = {
902 .hash = (uint32_t *) vh->md5_digest,
905 fio_md5_init(&md5_ctx);
906 fio_md5_update(&md5_ctx, p, len);
909 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
910 struct verify_header *hdr, unsigned int header_num,
911 unsigned int header_len)
913 unsigned int data_len;
918 hdr->magic = FIO_HDR_MAGIC;
919 hdr->verify_type = td->o.verify;
920 hdr->len = header_len;
921 hdr->rand_seed = io_u->rand_seed;
922 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
924 data_len = header_len - hdr_size(hdr);
926 data = p + hdr_size(hdr);
927 switch (td->o.verify) {
929 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
931 fill_md5(hdr, data, data_len);
934 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
936 fill_crc64(hdr, data, data_len);
939 case VERIFY_CRC32C_INTEL:
940 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
942 fill_crc32c(hdr, data, data_len);
945 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
947 fill_crc32(hdr, data, data_len);
950 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
952 fill_crc16(hdr, data, data_len);
955 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
957 fill_crc7(hdr, data, data_len);
960 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
962 fill_sha256(hdr, data, data_len);
965 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
967 fill_sha512(hdr, data, data_len);
970 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
972 fill_meta(hdr, td, io_u, header_num);
975 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
977 fill_sha1(hdr, data, data_len);
980 /* nothing to do here */
983 log_err("fio: bad verify type: %d\n", td->o.verify);
986 if (td->o.verify_offset)
987 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
991 * fill body of io_u->buf with random data and add a header with the
994 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
996 if (td->o.verify == VERIFY_NULL)
999 io_u->numberio = td->io_issues[io_u->ddir];
1001 fill_pattern_headers(td, io_u, 0, 0);
1004 int get_next_verify(struct thread_data *td, struct io_u *io_u)
1006 struct io_piece *ipo = NULL;
1009 * this io_u is from a requeue, we already filled the offsets
1014 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1015 struct rb_node *n = rb_first(&td->io_hist_tree);
1017 ipo = rb_entry(n, struct io_piece, rb_node);
1018 rb_erase(n, &td->io_hist_tree);
1019 assert(ipo->flags & IP_F_ONRB);
1020 ipo->flags &= ~IP_F_ONRB;
1021 } else if (!flist_empty(&td->io_hist_list)) {
1022 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
1023 flist_del(&ipo->list);
1024 assert(ipo->flags & IP_F_ONLIST);
1025 ipo->flags &= ~IP_F_ONLIST;
1031 io_u->offset = ipo->offset;
1032 io_u->buflen = ipo->len;
1033 io_u->numberio = ipo->numberio;
1034 io_u->file = ipo->file;
1035 io_u->flags |= IO_U_F_VER_LIST;
1037 if (ipo->flags & IP_F_TRIMMED)
1038 io_u->flags |= IO_U_F_TRIMMED;
1040 if (!fio_file_open(io_u->file)) {
1041 int r = td_io_open_file(td, io_u->file);
1044 dprint(FD_VERIFY, "failed file %s open\n",
1045 io_u->file->file_name);
1050 get_file(ipo->file);
1051 assert(fio_file_open(io_u->file));
1052 io_u->ddir = DDIR_READ;
1053 io_u->xfer_buf = io_u->buf;
1054 io_u->xfer_buflen = io_u->buflen;
1056 remove_trim_entry(td, ipo);
1058 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1062 dprint(FD_VERIFY, "get_next_verify: empty\n");
1066 void fio_verify_init(struct thread_data *td)
1068 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1069 td->o.verify == VERIFY_CRC32C) {
1070 crc32c_intel_probe();
1074 static void *verify_async_thread(void *data)
1076 struct thread_data *td = data;
1080 if (td->o.verify_cpumask_set &&
1081 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1082 log_err("fio: failed setting verify thread affinity\n");
1090 if (td->verify_thread_exit)
1093 pthread_mutex_lock(&td->io_u_lock);
1095 while (flist_empty(&td->verify_list) &&
1096 !td->verify_thread_exit) {
1097 ret = pthread_cond_wait(&td->verify_cond,
1100 pthread_mutex_unlock(&td->io_u_lock);
1105 flist_splice_init(&td->verify_list, &list);
1106 pthread_mutex_unlock(&td->io_u_lock);
1108 if (flist_empty(&list))
1111 while (!flist_empty(&list)) {
1112 io_u = flist_entry(list.next, struct io_u, verify_list);
1113 flist_del(&io_u->verify_list);
1115 ret = verify_io_u(td, io_u);
1119 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1120 update_error_count(td, ret);
1128 td_verror(td, ret, "async_verify");
1129 if (td->o.verify_fatal)
1134 pthread_mutex_lock(&td->io_u_lock);
1135 td->nr_verify_threads--;
1136 pthread_mutex_unlock(&td->io_u_lock);
1138 pthread_cond_signal(&td->free_cond);
1142 int verify_async_init(struct thread_data *td)
1145 pthread_attr_t attr;
1147 pthread_attr_init(&attr);
1148 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1150 td->verify_thread_exit = 0;
1152 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1153 for (i = 0; i < td->o.verify_async; i++) {
1154 ret = pthread_create(&td->verify_threads[i], &attr,
1155 verify_async_thread, td);
1157 log_err("fio: async verify creation failed: %s\n",
1161 ret = pthread_detach(td->verify_threads[i]);
1163 log_err("fio: async verify thread detach failed: %s\n",
1167 td->nr_verify_threads++;
1170 pthread_attr_destroy(&attr);
1172 if (i != td->o.verify_async) {
1173 log_err("fio: only %d verify threads started, exiting\n", i);
1174 td->verify_thread_exit = 1;
1176 pthread_cond_broadcast(&td->verify_cond);
1183 void verify_async_exit(struct thread_data *td)
1185 td->verify_thread_exit = 1;
1187 pthread_cond_broadcast(&td->verify_cond);
1189 pthread_mutex_lock(&td->io_u_lock);
1191 while (td->nr_verify_threads)
1192 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1194 pthread_mutex_unlock(&td->io_u_lock);
1195 free(td->verify_threads);
1196 td->verify_threads = NULL;