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"
26 #include "crc/xxhash.h"
28 static 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);
32 static void fill_pattern(struct thread_data *td, void *p, unsigned int len,
33 char *pattern, unsigned int pattern_bytes)
35 switch (pattern_bytes) {
40 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
41 memset(p, pattern[0], len);
44 unsigned int i = 0, size = 0;
47 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
54 memcpy(b+i, pattern, size);
62 void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
64 fill_pattern(td, p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes);
67 void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
68 struct io_u *io_u, unsigned long seed, int use_seed)
70 if (!td->o.verify_pattern_bytes) {
71 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
74 __fill_random_buf(p, len, seed);
76 io_u->rand_seed = fill_random_buf(&td->__verify_state, p, len);
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);
86 fill_pattern(td, p, len, td->o.verify_pattern, td->o.verify_pattern_bytes);
88 io_u->buf_filled_len = len;
91 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
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;
102 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
103 unsigned long seed, int use_seed)
105 unsigned int hdr_inc, header_num;
106 struct verify_header *hdr;
109 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
111 hdr_inc = get_hdr_inc(td, io_u);
113 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
115 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
120 static void memswp(void *buf1, void *buf2, unsigned int len)
124 assert(len <= sizeof(swap));
126 memcpy(&swap, buf1, len);
127 memcpy(buf1, buf2, len);
128 memcpy(buf2, &swap, len);
131 static void hexdump(void *buffer, int len)
133 unsigned char *p = buffer;
136 for (i = 0; i < len; i++)
137 log_err("%02x", p[i]);
142 * Prepare for separation of verify_header and checksum header
144 static inline unsigned int __hdr_size(int verify_type)
146 unsigned int len = 0;
148 switch (verify_type) {
154 len = sizeof(struct vhdr_md5);
157 len = sizeof(struct vhdr_crc64);
161 case VERIFY_CRC32C_INTEL:
162 len = sizeof(struct vhdr_crc32);
165 len = sizeof(struct vhdr_crc16);
168 len = sizeof(struct vhdr_crc7);
171 len = sizeof(struct vhdr_sha256);
174 len = sizeof(struct vhdr_sha512);
177 len = sizeof(struct vhdr_xxhash);
180 len = sizeof(struct vhdr_meta);
183 len = sizeof(struct vhdr_sha1);
189 log_err("fio: unknown verify header!\n");
193 return len + sizeof(struct verify_header);
196 static inline unsigned int hdr_size(struct verify_header *hdr)
198 return __hdr_size(hdr->verify_type);
201 static void *hdr_priv(struct verify_header *hdr)
205 return priv + sizeof(struct verify_header);
209 * Verify container, pass info to verify handlers and allow them to
210 * pass info back in case of error
217 unsigned int hdr_num;
218 struct thread_data *td;
221 * Output, only valid in case of error
226 unsigned int crc_len;
229 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
230 const char *type, struct fio_file *f)
232 char *ptr, fname[256];
235 ptr = strdup(f->file_name);
236 strcpy(fname, basename(ptr));
238 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
240 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
242 perror("open verify buf file");
247 ret = write(fd, buf, len);
251 perror("write verify buf file");
259 log_err(" %s data dumped as %s\n", type, fname);
264 * Dump the contents of the read block and re-generate the correct data
267 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
269 struct thread_data *td = vc->td;
270 struct io_u *io_u = vc->io_u;
271 unsigned long hdr_offset;
275 if (!td->o.verify_dump)
279 * Dump the contents we just read off disk
281 hdr_offset = vc->hdr_num * hdr->len;
283 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
284 "received", vc->io_u->file);
287 * Allocate a new buf and re-generate the original data
289 buf = malloc(io_u->buflen);
292 dummy.rand_seed = hdr->rand_seed;
293 dummy.buf_filled_len = 0;
294 dummy.buflen = io_u->buflen;
296 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
298 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
299 "expected", vc->io_u->file);
303 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
305 unsigned long long offset;
307 offset = vc->io_u->offset;
308 offset += vc->hdr_num * hdr->len;
309 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
310 vc->name, vc->io_u->file->file_name, offset, hdr->len);
312 if (vc->good_crc && vc->bad_crc) {
313 log_err(" Expected CRC: ");
314 hexdump(vc->good_crc, vc->crc_len);
315 log_err(" Received CRC: ");
316 hexdump(vc->bad_crc, vc->crc_len);
319 dump_verify_buffers(hdr, vc);
323 * Return data area 'header_num'
325 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
327 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
330 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
332 struct thread_data *td = vc->td;
333 struct io_u *io_u = vc->io_u;
335 unsigned int header_size = __hdr_size(td->o.verify);
336 unsigned int len, mod, i, size, pattern_size;
338 pattern = td->o.verify_pattern;
339 pattern_size = td->o.verify_pattern_bytes;
340 if (pattern_size <= 1)
341 pattern_size = MAX_PATTERN_SIZE;
342 buf = (void *) hdr + header_size;
343 len = get_hdr_inc(td, io_u) - header_size;
344 mod = header_size % pattern_size;
346 for (i = 0; i < len; i += size) {
347 size = pattern_size - mod;
348 if (size > (len - i))
350 if (memcmp(buf + i, pattern + mod, size))
351 /* Let the slow compare find the first mismatch byte. */
356 for (; i < len; i++) {
357 if (buf[i] != pattern[mod]) {
360 bits = hweight8(buf[i] ^ pattern[mod]);
361 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
362 buf[i], pattern[mod], bits);
363 log_err("fio: bad pattern block offset %u\n", i);
364 dump_verify_buffers(hdr, vc);
368 if (mod == td->o.verify_pattern_bytes)
375 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
377 struct thread_data *td = vc->td;
378 struct vhdr_meta *vh = hdr_priv(hdr);
379 struct io_u *io_u = vc->io_u;
382 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
384 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
387 if (td->o.verify_pattern_bytes)
388 ret |= verify_io_u_pattern(hdr, vc);
391 * For read-only workloads, the program cannot be certain of the
392 * last numberio written to a block. Checking of numberio will be done
393 * only for workloads that write data.
394 * For verify_only, numberio will be checked in the last iteration when
395 * the correct state of numberio, that would have been written to each
396 * block in a previous run of fio, has been reached.
398 if (td_write(td) || td_rw(td))
399 if (!td->o.verify_only || td->o.loops == 0)
400 if (vh->numberio != io_u->numberio)
407 log_verify_failure(hdr, vc);
411 static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
413 void *p = io_u_verify_off(hdr, vc);
414 struct vhdr_xxhash *vh = hdr_priv(hdr);
418 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
420 state = XXH32_init(1);
421 XXH32_update(state, p, hdr->len - hdr_size(hdr));
422 hash = XXH32_digest(state);
424 if (vh->hash == hash)
428 vc->good_crc = &vh->hash;
430 vc->crc_len = sizeof(hash);
431 log_verify_failure(hdr, vc);
435 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
437 void *p = io_u_verify_off(hdr, vc);
438 struct vhdr_sha512 *vh = hdr_priv(hdr);
440 struct fio_sha512_ctx sha512_ctx = {
444 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
446 fio_sha512_init(&sha512_ctx);
447 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
449 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
453 vc->good_crc = vh->sha512;
454 vc->bad_crc = sha512_ctx.buf;
455 vc->crc_len = sizeof(vh->sha512);
456 log_verify_failure(hdr, vc);
460 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
462 void *p = io_u_verify_off(hdr, vc);
463 struct vhdr_sha256 *vh = hdr_priv(hdr);
465 struct fio_sha256_ctx sha256_ctx = {
469 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
471 fio_sha256_init(&sha256_ctx);
472 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
474 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
478 vc->good_crc = vh->sha256;
479 vc->bad_crc = sha256_ctx.buf;
480 vc->crc_len = sizeof(vh->sha256);
481 log_verify_failure(hdr, vc);
485 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
487 void *p = io_u_verify_off(hdr, vc);
488 struct vhdr_sha1 *vh = hdr_priv(hdr);
490 struct fio_sha1_ctx sha1_ctx = {
494 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
496 fio_sha1_init(&sha1_ctx);
497 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
499 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
503 vc->good_crc = vh->sha1;
504 vc->bad_crc = sha1_ctx.H;
505 vc->crc_len = sizeof(vh->sha1);
506 log_verify_failure(hdr, vc);
510 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
512 void *p = io_u_verify_off(hdr, vc);
513 struct vhdr_crc7 *vh = hdr_priv(hdr);
516 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
518 c = fio_crc7(p, hdr->len - hdr_size(hdr));
524 vc->good_crc = &vh->crc7;
527 log_verify_failure(hdr, vc);
531 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
533 void *p = io_u_verify_off(hdr, vc);
534 struct vhdr_crc16 *vh = hdr_priv(hdr);
537 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
539 c = fio_crc16(p, hdr->len - hdr_size(hdr));
545 vc->good_crc = &vh->crc16;
548 log_verify_failure(hdr, vc);
552 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
554 void *p = io_u_verify_off(hdr, vc);
555 struct vhdr_crc64 *vh = hdr_priv(hdr);
556 unsigned long long c;
558 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
560 c = fio_crc64(p, hdr->len - hdr_size(hdr));
566 vc->good_crc = &vh->crc64;
569 log_verify_failure(hdr, vc);
573 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
575 void *p = io_u_verify_off(hdr, vc);
576 struct vhdr_crc32 *vh = hdr_priv(hdr);
579 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
581 c = fio_crc32(p, hdr->len - hdr_size(hdr));
587 vc->good_crc = &vh->crc32;
590 log_verify_failure(hdr, vc);
594 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
596 void *p = io_u_verify_off(hdr, vc);
597 struct vhdr_crc32 *vh = hdr_priv(hdr);
600 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
602 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
608 vc->good_crc = &vh->crc32;
611 log_verify_failure(hdr, vc);
615 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
617 void *p = io_u_verify_off(hdr, vc);
618 struct vhdr_md5 *vh = hdr_priv(hdr);
619 uint32_t hash[MD5_HASH_WORDS];
620 struct fio_md5_ctx md5_ctx = {
624 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
626 fio_md5_init(&md5_ctx);
627 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
629 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
633 vc->good_crc = vh->md5_digest;
634 vc->bad_crc = md5_ctx.hash;
635 vc->crc_len = sizeof(hash);
636 log_verify_failure(hdr, vc);
641 * Push IO verification to a separate thread
643 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
646 put_file_log(td, io_u->file);
648 pthread_mutex_lock(&td->io_u_lock);
650 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
652 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
654 flist_add_tail(&io_u->verify_list, &td->verify_list);
655 io_u->flags |= IO_U_F_FREE_DEF;
656 pthread_mutex_unlock(&td->io_u_lock);
658 pthread_cond_signal(&td->verify_cond);
662 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
664 static char zero_buf[1024];
665 unsigned int this_len, len;
669 if (!td->o.trim_zero)
675 this_len = sizeof(zero_buf);
678 if (memcmp(p, zero_buf, this_len)) {
689 log_err("trim: verify failed at file %s offset %llu, length %lu"
690 ", block offset %lu\n",
691 io_u->file->file_name, io_u->offset, io_u->buflen,
692 (unsigned long) (p - io_u->buf));
696 static int verify_header(struct io_u *io_u, struct verify_header *hdr)
701 if (hdr->magic != FIO_HDR_MAGIC)
703 if (hdr->len > io_u->buflen)
705 if (hdr->rand_seed != io_u->rand_seed)
708 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
709 if (crc == hdr->crc32)
711 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
715 int verify_io_u(struct thread_data *td, struct io_u *io_u)
717 struct verify_header *hdr;
718 unsigned int header_size, hdr_inc, hdr_num = 0;
722 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
724 if (io_u->flags & IO_U_F_TRIMMED) {
725 ret = verify_trimmed_io_u(td, io_u);
729 hdr_inc = get_hdr_inc(td, io_u);
732 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
733 p += hdr_inc, hdr_num++) {
739 unsigned int verify_type;
741 if (ret && td->o.verify_fatal)
744 header_size = __hdr_size(td->o.verify);
745 if (td->o.verify_offset)
746 memswp(p, p + td->o.verify_offset, header_size);
750 * Make rand_seed check pass when have verifysort or
753 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
754 io_u->rand_seed = hdr->rand_seed;
756 ret = verify_header(io_u, hdr);
761 log_err("verify: bad magic header %x, wanted %x at "
762 "file %s offset %llu, length %u\n",
763 hdr->magic, FIO_HDR_MAGIC,
764 io_u->file->file_name,
765 io_u->offset + hdr_num * hdr->len, hdr->len);
769 log_err("fio: verify header exceeds buffer length (%u "
770 "> %lu)\n", hdr->len, io_u->buflen);
774 log_err("verify: bad header rand_seed %"PRIu64
775 ", wanted %"PRIu64" at file %s offset %llu, "
777 hdr->rand_seed, io_u->rand_seed,
778 io_u->file->file_name,
779 io_u->offset + hdr_num * hdr->len, hdr->len);
786 log_err("verify: unknown header error at file %s "
787 "offset %llu, length %u\n",
788 io_u->file->file_name,
789 io_u->offset + hdr_num * hdr->len, hdr->len);
793 if (td->o.verify != VERIFY_NONE)
794 verify_type = td->o.verify;
796 verify_type = hdr->verify_type;
798 switch (verify_type) {
800 ret = verify_io_u_md5(hdr, &vc);
803 ret = verify_io_u_crc64(hdr, &vc);
806 case VERIFY_CRC32C_INTEL:
807 ret = verify_io_u_crc32c(hdr, &vc);
810 ret = verify_io_u_crc32(hdr, &vc);
813 ret = verify_io_u_crc16(hdr, &vc);
816 ret = verify_io_u_crc7(hdr, &vc);
819 ret = verify_io_u_sha256(hdr, &vc);
822 ret = verify_io_u_sha512(hdr, &vc);
825 ret = verify_io_u_xxhash(hdr, &vc);
828 ret = verify_io_u_meta(hdr, &vc);
831 ret = verify_io_u_sha1(hdr, &vc);
834 ret = verify_io_u_pattern(hdr, &vc);
837 log_err("Bad verify type %u\n", hdr->verify_type);
841 if (ret && verify_type != hdr->verify_type)
842 log_err("fio: verify type mismatch (%u media, %u given)\n",
843 hdr->verify_type, verify_type);
847 if (ret && td->o.verify_fatal)
853 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
854 struct io_u *io_u, unsigned int header_num)
856 struct vhdr_meta *vh = hdr_priv(hdr);
858 vh->thread = td->thread_number;
860 vh->time_sec = io_u->start_time.tv_sec;
861 vh->time_usec = io_u->start_time.tv_usec;
863 vh->numberio = io_u->numberio;
865 vh->offset = io_u->offset + header_num * td->o.verify_interval;
868 static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
870 struct vhdr_xxhash *vh = hdr_priv(hdr);
873 state = XXH32_init(1);
874 XXH32_update(state, p, len);
875 vh->hash = XXH32_digest(state);
878 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
880 struct vhdr_sha512 *vh = hdr_priv(hdr);
881 struct fio_sha512_ctx sha512_ctx = {
885 fio_sha512_init(&sha512_ctx);
886 fio_sha512_update(&sha512_ctx, p, len);
889 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
891 struct vhdr_sha256 *vh = hdr_priv(hdr);
892 struct fio_sha256_ctx sha256_ctx = {
896 fio_sha256_init(&sha256_ctx);
897 fio_sha256_update(&sha256_ctx, p, len);
900 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
902 struct vhdr_sha1 *vh = hdr_priv(hdr);
903 struct fio_sha1_ctx sha1_ctx = {
907 fio_sha1_init(&sha1_ctx);
908 fio_sha1_update(&sha1_ctx, p, len);
911 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
913 struct vhdr_crc7 *vh = hdr_priv(hdr);
915 vh->crc7 = fio_crc7(p, len);
918 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
920 struct vhdr_crc16 *vh = hdr_priv(hdr);
922 vh->crc16 = fio_crc16(p, len);
925 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
927 struct vhdr_crc32 *vh = hdr_priv(hdr);
929 vh->crc32 = fio_crc32(p, len);
932 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
934 struct vhdr_crc32 *vh = hdr_priv(hdr);
936 vh->crc32 = fio_crc32c(p, len);
939 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
941 struct vhdr_crc64 *vh = hdr_priv(hdr);
943 vh->crc64 = fio_crc64(p, len);
946 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
948 struct vhdr_md5 *vh = hdr_priv(hdr);
949 struct fio_md5_ctx md5_ctx = {
950 .hash = (uint32_t *) vh->md5_digest,
953 fio_md5_init(&md5_ctx);
954 fio_md5_update(&md5_ctx, p, len);
957 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
958 struct verify_header *hdr, unsigned int header_num,
959 unsigned int header_len)
961 unsigned int data_len;
966 hdr->magic = FIO_HDR_MAGIC;
967 hdr->verify_type = td->o.verify;
968 hdr->len = header_len;
969 hdr->rand_seed = io_u->rand_seed;
970 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
972 data_len = header_len - hdr_size(hdr);
974 data = p + hdr_size(hdr);
975 switch (td->o.verify) {
977 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
979 fill_md5(hdr, data, data_len);
982 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
984 fill_crc64(hdr, data, data_len);
987 case VERIFY_CRC32C_INTEL:
988 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
990 fill_crc32c(hdr, data, data_len);
993 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
995 fill_crc32(hdr, data, data_len);
998 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1000 fill_crc16(hdr, data, data_len);
1003 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1005 fill_crc7(hdr, data, data_len);
1008 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1010 fill_sha256(hdr, data, data_len);
1013 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1015 fill_sha512(hdr, data, data_len);
1018 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1020 fill_xxhash(hdr, data, data_len);
1023 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
1025 fill_meta(hdr, td, io_u, header_num);
1028 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1030 fill_sha1(hdr, data, data_len);
1032 case VERIFY_PATTERN:
1033 /* nothing to do here */
1036 log_err("fio: bad verify type: %d\n", td->o.verify);
1039 if (td->o.verify_offset)
1040 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
1044 * fill body of io_u->buf with random data and add a header with the
1045 * checksum of choice
1047 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1049 if (td->o.verify == VERIFY_NULL)
1052 io_u->numberio = td->io_issues[io_u->ddir];
1054 fill_pattern_headers(td, io_u, 0, 0);
1057 int get_next_verify(struct thread_data *td, struct io_u *io_u)
1059 struct io_piece *ipo = NULL;
1062 * this io_u is from a requeue, we already filled the offsets
1067 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1068 struct rb_node *n = rb_first(&td->io_hist_tree);
1070 ipo = rb_entry(n, struct io_piece, rb_node);
1073 * Ensure that the associated IO has completed
1076 if (ipo->flags & IP_F_IN_FLIGHT)
1079 rb_erase(n, &td->io_hist_tree);
1080 assert(ipo->flags & IP_F_ONRB);
1081 ipo->flags &= ~IP_F_ONRB;
1082 } else if (!flist_empty(&td->io_hist_list)) {
1083 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
1086 * Ensure that the associated IO has completed
1089 if (ipo->flags & IP_F_IN_FLIGHT)
1092 flist_del(&ipo->list);
1093 assert(ipo->flags & IP_F_ONLIST);
1094 ipo->flags &= ~IP_F_ONLIST;
1100 io_u->offset = ipo->offset;
1101 io_u->buflen = ipo->len;
1102 io_u->numberio = ipo->numberio;
1103 io_u->file = ipo->file;
1104 io_u->flags |= IO_U_F_VER_LIST;
1106 if (ipo->flags & IP_F_TRIMMED)
1107 io_u->flags |= IO_U_F_TRIMMED;
1109 if (!fio_file_open(io_u->file)) {
1110 int r = td_io_open_file(td, io_u->file);
1113 dprint(FD_VERIFY, "failed file %s open\n",
1114 io_u->file->file_name);
1119 get_file(ipo->file);
1120 assert(fio_file_open(io_u->file));
1121 io_u->ddir = DDIR_READ;
1122 io_u->xfer_buf = io_u->buf;
1123 io_u->xfer_buflen = io_u->buflen;
1125 remove_trim_entry(td, ipo);
1127 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1129 if (!td->o.verify_pattern_bytes) {
1130 io_u->rand_seed = __rand(&td->__verify_state);
1131 if (sizeof(int) != sizeof(long *))
1132 io_u->rand_seed *= __rand(&td->__verify_state);
1138 dprint(FD_VERIFY, "get_next_verify: empty\n");
1142 void fio_verify_init(struct thread_data *td)
1144 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1145 td->o.verify == VERIFY_CRC32C) {
1146 crc32c_intel_probe();
1150 static void *verify_async_thread(void *data)
1152 struct thread_data *td = data;
1156 if (td->o.verify_cpumask_set &&
1157 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1158 log_err("fio: failed setting verify thread affinity\n");
1166 if (td->verify_thread_exit)
1169 pthread_mutex_lock(&td->io_u_lock);
1171 while (flist_empty(&td->verify_list) &&
1172 !td->verify_thread_exit) {
1173 ret = pthread_cond_wait(&td->verify_cond,
1176 pthread_mutex_unlock(&td->io_u_lock);
1181 flist_splice_init(&td->verify_list, &list);
1182 pthread_mutex_unlock(&td->io_u_lock);
1184 if (flist_empty(&list))
1187 while (!flist_empty(&list)) {
1188 io_u = flist_entry(list.next, struct io_u, verify_list);
1189 flist_del(&io_u->verify_list);
1191 ret = verify_io_u(td, io_u);
1195 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1196 update_error_count(td, ret);
1204 td_verror(td, ret, "async_verify");
1205 if (td->o.verify_fatal)
1210 pthread_mutex_lock(&td->io_u_lock);
1211 td->nr_verify_threads--;
1212 pthread_mutex_unlock(&td->io_u_lock);
1214 pthread_cond_signal(&td->free_cond);
1218 int verify_async_init(struct thread_data *td)
1221 pthread_attr_t attr;
1223 pthread_attr_init(&attr);
1224 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1226 td->verify_thread_exit = 0;
1228 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1229 for (i = 0; i < td->o.verify_async; i++) {
1230 ret = pthread_create(&td->verify_threads[i], &attr,
1231 verify_async_thread, td);
1233 log_err("fio: async verify creation failed: %s\n",
1237 ret = pthread_detach(td->verify_threads[i]);
1239 log_err("fio: async verify thread detach failed: %s\n",
1243 td->nr_verify_threads++;
1246 pthread_attr_destroy(&attr);
1248 if (i != td->o.verify_async) {
1249 log_err("fio: only %d verify threads started, exiting\n", i);
1250 td->verify_thread_exit = 1;
1252 pthread_cond_broadcast(&td->verify_cond);
1259 void verify_async_exit(struct thread_data *td)
1261 td->verify_thread_exit = 1;
1263 pthread_cond_broadcast(&td->verify_cond);
1265 pthread_mutex_lock(&td->io_u_lock);
1267 while (td->nr_verify_threads)
1268 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1270 pthread_mutex_unlock(&td->io_u_lock);
1271 free(td->verify_threads);
1272 td->verify_threads = NULL;