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 #define DUMP_BUF_SZ 255
230 static int dump_buf_warned;
232 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
233 const char *type, struct fio_file *f)
235 char *ptr, fname[DUMP_BUF_SZ];
236 size_t buf_left = DUMP_BUF_SZ;
239 ptr = strdup(f->file_name);
241 fname[DUMP_BUF_SZ - 1] = '\0';
242 strncpy(fname, basename(ptr), DUMP_BUF_SZ - 1);
244 buf_left -= strlen(fname);
246 if (!dump_buf_warned) {
247 log_err("fio: verify failure dump buffer too small\n");
254 snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type);
256 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
258 perror("open verify buf file");
263 ret = write(fd, buf, len);
267 perror("write verify buf file");
275 log_err(" %s data dumped as %s\n", type, fname);
280 * Dump the contents of the read block and re-generate the correct data
283 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
285 struct thread_data *td = vc->td;
286 struct io_u *io_u = vc->io_u;
287 unsigned long hdr_offset;
291 if (!td->o.verify_dump)
295 * Dump the contents we just read off disk
297 hdr_offset = vc->hdr_num * hdr->len;
299 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
300 "received", vc->io_u->file);
303 * Allocate a new buf and re-generate the original data
305 buf = malloc(io_u->buflen);
308 dummy.rand_seed = hdr->rand_seed;
309 dummy.buf_filled_len = 0;
310 dummy.buflen = io_u->buflen;
312 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
314 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
315 "expected", vc->io_u->file);
319 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
321 unsigned long long offset;
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);
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);
335 dump_verify_buffers(hdr, vc);
339 * Return data area 'header_num'
341 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
343 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
346 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
348 struct thread_data *td = vc->td;
349 struct io_u *io_u = vc->io_u;
351 unsigned int header_size = __hdr_size(td->o.verify);
352 unsigned int len, mod, i, size, pattern_size;
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;
362 for (i = 0; i < len; i += size) {
363 size = pattern_size - mod;
364 if (size > (len - i))
366 if (memcmp(buf + i, pattern + mod, size))
367 /* Let the slow compare find the first mismatch byte. */
372 for (; i < len; i++) {
373 if (buf[i] != pattern[mod]) {
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);
384 if (mod == td->o.verify_pattern_bytes)
391 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
393 struct thread_data *td = vc->td;
394 struct vhdr_meta *vh = hdr_priv(hdr);
395 struct io_u *io_u = vc->io_u;
398 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
400 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
403 if (td->o.verify_pattern_bytes)
404 ret |= verify_io_u_pattern(hdr, vc);
407 * For read-only workloads, the program cannot be certain of the
408 * last numberio written to a block. Checking of numberio will be done
409 * only for workloads that write data.
410 * For verify_only, numberio will be checked in the last iteration when
411 * the correct state of numberio, that would have been written to each
412 * block in a previous run of fio, has been reached.
414 if (td_write(td) || td_rw(td))
415 if (!td->o.verify_only || td->o.loops == 0)
416 if (vh->numberio != io_u->numberio)
423 log_verify_failure(hdr, vc);
427 static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
429 void *p = io_u_verify_off(hdr, vc);
430 struct vhdr_xxhash *vh = hdr_priv(hdr);
434 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
436 state = XXH32_init(1);
437 XXH32_update(state, p, hdr->len - hdr_size(hdr));
438 hash = XXH32_digest(state);
440 if (vh->hash == hash)
444 vc->good_crc = &vh->hash;
446 vc->crc_len = sizeof(hash);
447 log_verify_failure(hdr, vc);
451 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
453 void *p = io_u_verify_off(hdr, vc);
454 struct vhdr_sha512 *vh = hdr_priv(hdr);
456 struct fio_sha512_ctx sha512_ctx = {
460 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
462 fio_sha512_init(&sha512_ctx);
463 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
465 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(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);
476 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
478 void *p = io_u_verify_off(hdr, vc);
479 struct vhdr_sha256 *vh = hdr_priv(hdr);
481 struct fio_sha256_ctx sha256_ctx = {
485 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
487 fio_sha256_init(&sha256_ctx);
488 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
490 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(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);
501 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
503 void *p = io_u_verify_off(hdr, vc);
504 struct vhdr_sha1 *vh = hdr_priv(hdr);
506 struct fio_sha1_ctx sha1_ctx = {
510 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
512 fio_sha1_init(&sha1_ctx);
513 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
515 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(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);
526 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
528 void *p = io_u_verify_off(hdr, vc);
529 struct vhdr_crc7 *vh = hdr_priv(hdr);
532 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
534 c = fio_crc7(p, hdr->len - hdr_size(hdr));
540 vc->good_crc = &vh->crc7;
543 log_verify_failure(hdr, vc);
547 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
549 void *p = io_u_verify_off(hdr, vc);
550 struct vhdr_crc16 *vh = hdr_priv(hdr);
553 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
555 c = fio_crc16(p, hdr->len - hdr_size(hdr));
561 vc->good_crc = &vh->crc16;
564 log_verify_failure(hdr, vc);
568 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
570 void *p = io_u_verify_off(hdr, vc);
571 struct vhdr_crc64 *vh = hdr_priv(hdr);
572 unsigned long long c;
574 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
576 c = fio_crc64(p, hdr->len - hdr_size(hdr));
582 vc->good_crc = &vh->crc64;
585 log_verify_failure(hdr, vc);
589 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
591 void *p = io_u_verify_off(hdr, vc);
592 struct vhdr_crc32 *vh = hdr_priv(hdr);
595 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
597 c = fio_crc32(p, hdr->len - hdr_size(hdr));
603 vc->good_crc = &vh->crc32;
606 log_verify_failure(hdr, vc);
610 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
612 void *p = io_u_verify_off(hdr, vc);
613 struct vhdr_crc32 *vh = hdr_priv(hdr);
616 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
618 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
624 vc->good_crc = &vh->crc32;
627 log_verify_failure(hdr, vc);
631 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
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 = {
640 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
642 fio_md5_init(&md5_ctx);
643 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
645 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
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);
657 * Push IO verification to a separate thread
659 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
662 put_file_log(td, io_u->file);
664 pthread_mutex_lock(&td->io_u_lock);
666 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
668 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
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);
674 pthread_cond_signal(&td->verify_cond);
678 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
680 static char zero_buf[1024];
681 unsigned int this_len, len;
685 if (!td->o.trim_zero)
691 this_len = sizeof(zero_buf);
694 if (memcmp(p, zero_buf, this_len)) {
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));
712 static int verify_header(struct io_u *io_u, struct verify_header *hdr)
717 if (hdr->magic != FIO_HDR_MAGIC)
719 if (hdr->len > io_u->buflen)
721 if (hdr->rand_seed != io_u->rand_seed)
724 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
725 if (crc == hdr->crc32)
727 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
731 int verify_io_u(struct thread_data *td, struct io_u *io_u)
733 struct verify_header *hdr;
734 unsigned int header_size, hdr_inc, hdr_num = 0;
738 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
740 if (io_u->flags & IO_U_F_TRIMMED) {
741 ret = verify_trimmed_io_u(td, io_u);
745 hdr_inc = get_hdr_inc(td, io_u);
748 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
749 p += hdr_inc, hdr_num++) {
755 unsigned int verify_type;
757 if (ret && td->o.verify_fatal)
760 header_size = __hdr_size(td->o.verify);
761 if (td->o.verify_offset)
762 memswp(p, p + td->o.verify_offset, header_size);
766 * Make rand_seed check pass when have verifysort or
769 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
770 io_u->rand_seed = hdr->rand_seed;
772 ret = verify_header(io_u, hdr);
777 log_err("verify: bad magic header %x, wanted %x at "
778 "file %s offset %llu, length %u\n",
779 hdr->magic, FIO_HDR_MAGIC,
780 io_u->file->file_name,
781 io_u->offset + hdr_num * hdr->len, hdr->len);
785 log_err("fio: verify header exceeds buffer length (%u "
786 "> %lu)\n", hdr->len, io_u->buflen);
790 log_err("verify: bad header rand_seed %"PRIu64
791 ", wanted %"PRIu64" at file %s offset %llu, "
793 hdr->rand_seed, io_u->rand_seed,
794 io_u->file->file_name,
795 io_u->offset + hdr_num * hdr->len, hdr->len);
802 log_err("verify: unknown header error at file %s "
803 "offset %llu, length %u\n",
804 io_u->file->file_name,
805 io_u->offset + hdr_num * hdr->len, hdr->len);
809 if (td->o.verify != VERIFY_NONE)
810 verify_type = td->o.verify;
812 verify_type = hdr->verify_type;
814 switch (verify_type) {
816 ret = verify_io_u_md5(hdr, &vc);
819 ret = verify_io_u_crc64(hdr, &vc);
822 case VERIFY_CRC32C_INTEL:
823 ret = verify_io_u_crc32c(hdr, &vc);
826 ret = verify_io_u_crc32(hdr, &vc);
829 ret = verify_io_u_crc16(hdr, &vc);
832 ret = verify_io_u_crc7(hdr, &vc);
835 ret = verify_io_u_sha256(hdr, &vc);
838 ret = verify_io_u_sha512(hdr, &vc);
841 ret = verify_io_u_xxhash(hdr, &vc);
844 ret = verify_io_u_meta(hdr, &vc);
847 ret = verify_io_u_sha1(hdr, &vc);
850 ret = verify_io_u_pattern(hdr, &vc);
853 log_err("Bad verify type %u\n", hdr->verify_type);
857 if (ret && verify_type != hdr->verify_type)
858 log_err("fio: verify type mismatch (%u media, %u given)\n",
859 hdr->verify_type, verify_type);
863 if (ret && td->o.verify_fatal)
869 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
870 struct io_u *io_u, unsigned int header_num)
872 struct vhdr_meta *vh = hdr_priv(hdr);
874 vh->thread = td->thread_number;
876 vh->time_sec = io_u->start_time.tv_sec;
877 vh->time_usec = io_u->start_time.tv_usec;
879 vh->numberio = io_u->numberio;
881 vh->offset = io_u->offset + header_num * td->o.verify_interval;
884 static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
886 struct vhdr_xxhash *vh = hdr_priv(hdr);
889 state = XXH32_init(1);
890 XXH32_update(state, p, len);
891 vh->hash = XXH32_digest(state);
894 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
896 struct vhdr_sha512 *vh = hdr_priv(hdr);
897 struct fio_sha512_ctx sha512_ctx = {
901 fio_sha512_init(&sha512_ctx);
902 fio_sha512_update(&sha512_ctx, p, len);
905 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
907 struct vhdr_sha256 *vh = hdr_priv(hdr);
908 struct fio_sha256_ctx sha256_ctx = {
912 fio_sha256_init(&sha256_ctx);
913 fio_sha256_update(&sha256_ctx, p, len);
916 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
918 struct vhdr_sha1 *vh = hdr_priv(hdr);
919 struct fio_sha1_ctx sha1_ctx = {
923 fio_sha1_init(&sha1_ctx);
924 fio_sha1_update(&sha1_ctx, p, len);
927 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
929 struct vhdr_crc7 *vh = hdr_priv(hdr);
931 vh->crc7 = fio_crc7(p, len);
934 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
936 struct vhdr_crc16 *vh = hdr_priv(hdr);
938 vh->crc16 = fio_crc16(p, len);
941 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
943 struct vhdr_crc32 *vh = hdr_priv(hdr);
945 vh->crc32 = fio_crc32(p, len);
948 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
950 struct vhdr_crc32 *vh = hdr_priv(hdr);
952 vh->crc32 = fio_crc32c(p, len);
955 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
957 struct vhdr_crc64 *vh = hdr_priv(hdr);
959 vh->crc64 = fio_crc64(p, len);
962 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
964 struct vhdr_md5 *vh = hdr_priv(hdr);
965 struct fio_md5_ctx md5_ctx = {
966 .hash = (uint32_t *) vh->md5_digest,
969 fio_md5_init(&md5_ctx);
970 fio_md5_update(&md5_ctx, p, len);
973 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
974 struct verify_header *hdr, unsigned int header_num,
975 unsigned int header_len)
977 unsigned int data_len;
982 hdr->magic = FIO_HDR_MAGIC;
983 hdr->verify_type = td->o.verify;
984 hdr->len = header_len;
985 hdr->rand_seed = io_u->rand_seed;
986 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
988 data_len = header_len - hdr_size(hdr);
990 data = p + hdr_size(hdr);
991 switch (td->o.verify) {
993 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
995 fill_md5(hdr, data, data_len);
998 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1000 fill_crc64(hdr, data, data_len);
1003 case VERIFY_CRC32C_INTEL:
1004 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1006 fill_crc32c(hdr, data, data_len);
1009 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1011 fill_crc32(hdr, data, data_len);
1014 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1016 fill_crc16(hdr, data, data_len);
1019 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1021 fill_crc7(hdr, data, data_len);
1024 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1026 fill_sha256(hdr, data, data_len);
1029 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1031 fill_sha512(hdr, data, data_len);
1034 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1036 fill_xxhash(hdr, data, data_len);
1039 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
1041 fill_meta(hdr, td, io_u, header_num);
1044 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1046 fill_sha1(hdr, data, data_len);
1048 case VERIFY_PATTERN:
1049 /* nothing to do here */
1052 log_err("fio: bad verify type: %d\n", td->o.verify);
1055 if (td->o.verify_offset)
1056 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
1060 * fill body of io_u->buf with random data and add a header with the
1061 * checksum of choice
1063 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1065 if (td->o.verify == VERIFY_NULL)
1068 io_u->numberio = td->io_issues[io_u->ddir];
1070 fill_pattern_headers(td, io_u, 0, 0);
1073 int get_next_verify(struct thread_data *td, struct io_u *io_u)
1075 struct io_piece *ipo = NULL;
1078 * this io_u is from a requeue, we already filled the offsets
1083 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1084 struct rb_node *n = rb_first(&td->io_hist_tree);
1086 ipo = rb_entry(n, struct io_piece, rb_node);
1089 * Ensure that the associated IO has completed
1092 if (ipo->flags & IP_F_IN_FLIGHT)
1095 rb_erase(n, &td->io_hist_tree);
1096 assert(ipo->flags & IP_F_ONRB);
1097 ipo->flags &= ~IP_F_ONRB;
1098 } else if (!flist_empty(&td->io_hist_list)) {
1099 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
1102 * Ensure that the associated IO has completed
1105 if (ipo->flags & IP_F_IN_FLIGHT)
1108 flist_del(&ipo->list);
1109 assert(ipo->flags & IP_F_ONLIST);
1110 ipo->flags &= ~IP_F_ONLIST;
1116 io_u->offset = ipo->offset;
1117 io_u->buflen = ipo->len;
1118 io_u->numberio = ipo->numberio;
1119 io_u->file = ipo->file;
1120 io_u->flags |= IO_U_F_VER_LIST;
1122 if (ipo->flags & IP_F_TRIMMED)
1123 io_u->flags |= IO_U_F_TRIMMED;
1125 if (!fio_file_open(io_u->file)) {
1126 int r = td_io_open_file(td, io_u->file);
1129 dprint(FD_VERIFY, "failed file %s open\n",
1130 io_u->file->file_name);
1135 get_file(ipo->file);
1136 assert(fio_file_open(io_u->file));
1137 io_u->ddir = DDIR_READ;
1138 io_u->xfer_buf = io_u->buf;
1139 io_u->xfer_buflen = io_u->buflen;
1141 remove_trim_entry(td, ipo);
1143 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1145 if (!td->o.verify_pattern_bytes) {
1146 io_u->rand_seed = __rand(&td->__verify_state);
1147 if (sizeof(int) != sizeof(long *))
1148 io_u->rand_seed *= __rand(&td->__verify_state);
1154 dprint(FD_VERIFY, "get_next_verify: empty\n");
1158 void fio_verify_init(struct thread_data *td)
1160 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1161 td->o.verify == VERIFY_CRC32C) {
1162 crc32c_intel_probe();
1166 static void *verify_async_thread(void *data)
1168 struct thread_data *td = data;
1172 if (td->o.verify_cpumask_set &&
1173 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1174 log_err("fio: failed setting verify thread affinity\n");
1182 if (td->verify_thread_exit)
1185 pthread_mutex_lock(&td->io_u_lock);
1187 while (flist_empty(&td->verify_list) &&
1188 !td->verify_thread_exit) {
1189 ret = pthread_cond_wait(&td->verify_cond,
1192 pthread_mutex_unlock(&td->io_u_lock);
1197 flist_splice_init(&td->verify_list, &list);
1198 pthread_mutex_unlock(&td->io_u_lock);
1200 if (flist_empty(&list))
1203 while (!flist_empty(&list)) {
1204 io_u = flist_entry(list.next, struct io_u, verify_list);
1205 flist_del(&io_u->verify_list);
1207 ret = verify_io_u(td, io_u);
1211 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1212 update_error_count(td, ret);
1220 td_verror(td, ret, "async_verify");
1221 if (td->o.verify_fatal)
1226 pthread_mutex_lock(&td->io_u_lock);
1227 td->nr_verify_threads--;
1228 pthread_mutex_unlock(&td->io_u_lock);
1230 pthread_cond_signal(&td->free_cond);
1234 int verify_async_init(struct thread_data *td)
1237 pthread_attr_t attr;
1239 pthread_attr_init(&attr);
1240 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1242 td->verify_thread_exit = 0;
1244 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1245 for (i = 0; i < td->o.verify_async; i++) {
1246 ret = pthread_create(&td->verify_threads[i], &attr,
1247 verify_async_thread, td);
1249 log_err("fio: async verify creation failed: %s\n",
1253 ret = pthread_detach(td->verify_threads[i]);
1255 log_err("fio: async verify thread detach failed: %s\n",
1259 td->nr_verify_threads++;
1262 pthread_attr_destroy(&attr);
1264 if (i != td->o.verify_async) {
1265 log_err("fio: only %d verify threads started, exiting\n", i);
1266 td->verify_thread_exit = 1;
1268 pthread_cond_broadcast(&td->verify_cond);
1275 void verify_async_exit(struct thread_data *td)
1277 td->verify_thread_exit = 1;
1279 pthread_cond_broadcast(&td->verify_cond);
1281 pthread_mutex_lock(&td->io_u_lock);
1283 while (td->nr_verify_threads)
1284 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1286 pthread_mutex_unlock(&td->io_u_lock);
1287 free(td->verify_threads);
1288 td->verify_threads = NULL;