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 void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
34 fill_pattern(p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes);
37 void __fill_buffer(struct thread_options *o, unsigned long seed, void *p,
40 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
43 unsigned long fill_buffer(struct thread_data *td, void *p, unsigned int len)
45 struct frand_state *fs = &td->verify_state;
46 struct thread_options *o = &td->o;
48 return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
51 void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
52 struct io_u *io_u, unsigned long seed, int use_seed)
54 struct thread_options *o = &td->o;
56 if (!o->verify_pattern_bytes) {
57 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
60 __fill_buffer(o, seed, p, len);
62 io_u->rand_seed = fill_buffer(td, p, len);
66 if (io_u->buf_filled_len >= len) {
67 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
68 o->verify_pattern_bytes, len);
72 fill_pattern(p, len, o->verify_pattern, o->verify_pattern_bytes);
73 io_u->buf_filled_len = len;
76 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
80 hdr_inc = io_u->buflen;
81 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
82 hdr_inc = td->o.verify_interval;
87 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
88 unsigned long seed, int use_seed)
90 unsigned int hdr_inc, header_num;
91 struct verify_header *hdr;
94 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
96 hdr_inc = get_hdr_inc(td, io_u);
98 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
100 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
105 static void memswp(void *buf1, void *buf2, unsigned int len)
109 assert(len <= sizeof(swap));
111 memcpy(&swap, buf1, len);
112 memcpy(buf1, buf2, len);
113 memcpy(buf2, &swap, len);
116 static void hexdump(void *buffer, int len)
118 unsigned char *p = buffer;
121 for (i = 0; i < len; i++)
122 log_err("%02x", p[i]);
127 * Prepare for separation of verify_header and checksum header
129 static inline unsigned int __hdr_size(int verify_type)
131 unsigned int len = 0;
133 switch (verify_type) {
139 len = sizeof(struct vhdr_md5);
142 len = sizeof(struct vhdr_crc64);
146 case VERIFY_CRC32C_INTEL:
147 len = sizeof(struct vhdr_crc32);
150 len = sizeof(struct vhdr_crc16);
153 len = sizeof(struct vhdr_crc7);
156 len = sizeof(struct vhdr_sha256);
159 len = sizeof(struct vhdr_sha512);
162 len = sizeof(struct vhdr_xxhash);
165 len = sizeof(struct vhdr_meta);
168 len = sizeof(struct vhdr_sha1);
174 log_err("fio: unknown verify header!\n");
178 return len + sizeof(struct verify_header);
181 static inline unsigned int hdr_size(struct verify_header *hdr)
183 return __hdr_size(hdr->verify_type);
186 static void *hdr_priv(struct verify_header *hdr)
190 return priv + sizeof(struct verify_header);
194 * Verify container, pass info to verify handlers and allow them to
195 * pass info back in case of error
202 unsigned int hdr_num;
203 struct thread_data *td;
206 * Output, only valid in case of error
211 unsigned int crc_len;
214 #define DUMP_BUF_SZ 255
215 static int dump_buf_warned;
217 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
218 const char *type, struct fio_file *f)
220 char *ptr, fname[DUMP_BUF_SZ];
221 size_t buf_left = DUMP_BUF_SZ;
224 ptr = strdup(f->file_name);
226 fname[DUMP_BUF_SZ - 1] = '\0';
227 strncpy(fname, basename(ptr), DUMP_BUF_SZ - 1);
229 buf_left -= strlen(fname);
231 if (!dump_buf_warned) {
232 log_err("fio: verify failure dump buffer too small\n");
239 snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type);
241 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
243 perror("open verify buf file");
248 ret = write(fd, buf, len);
252 perror("write verify buf file");
260 log_err(" %s data dumped as %s\n", type, fname);
265 * Dump the contents of the read block and re-generate the correct data
268 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
270 struct thread_data *td = vc->td;
271 struct io_u *io_u = vc->io_u;
272 unsigned long hdr_offset;
276 if (!td->o.verify_dump)
280 * Dump the contents we just read off disk
282 hdr_offset = vc->hdr_num * hdr->len;
284 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
285 "received", vc->io_u->file);
288 * Allocate a new buf and re-generate the original data
290 buf = malloc(io_u->buflen);
293 dummy.rand_seed = hdr->rand_seed;
294 dummy.buf_filled_len = 0;
295 dummy.buflen = io_u->buflen;
297 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
299 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
300 "expected", vc->io_u->file);
304 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
306 unsigned long long offset;
308 offset = vc->io_u->offset;
309 offset += vc->hdr_num * hdr->len;
310 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
311 vc->name, vc->io_u->file->file_name, offset, hdr->len);
313 if (vc->good_crc && vc->bad_crc) {
314 log_err(" Expected CRC: ");
315 hexdump(vc->good_crc, vc->crc_len);
316 log_err(" Received CRC: ");
317 hexdump(vc->bad_crc, vc->crc_len);
320 dump_verify_buffers(hdr, vc);
324 * Return data area 'header_num'
326 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
328 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
331 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
333 struct thread_data *td = vc->td;
334 struct io_u *io_u = vc->io_u;
336 unsigned int header_size = __hdr_size(td->o.verify);
337 unsigned int len, mod, i, size, pattern_size;
339 pattern = td->o.verify_pattern;
340 pattern_size = td->o.verify_pattern_bytes;
341 if (pattern_size <= 1)
342 pattern_size = MAX_PATTERN_SIZE;
343 buf = (void *) hdr + header_size;
344 len = get_hdr_inc(td, io_u) - header_size;
345 mod = header_size % pattern_size;
347 for (i = 0; i < len; i += size) {
348 size = pattern_size - mod;
349 if (size > (len - i))
351 if (memcmp(buf + i, pattern + mod, size))
352 /* Let the slow compare find the first mismatch byte. */
357 for (; i < len; i++) {
358 if (buf[i] != pattern[mod]) {
361 bits = hweight8(buf[i] ^ pattern[mod]);
362 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
363 buf[i], pattern[mod], bits);
364 log_err("fio: bad pattern block offset %u\n", i);
365 dump_verify_buffers(hdr, vc);
369 if (mod == td->o.verify_pattern_bytes)
376 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
378 struct thread_data *td = vc->td;
379 struct vhdr_meta *vh = hdr_priv(hdr);
380 struct io_u *io_u = vc->io_u;
383 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
385 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
388 if (td->o.verify_pattern_bytes)
389 ret |= verify_io_u_pattern(hdr, vc);
392 * For read-only workloads, the program cannot be certain of the
393 * last numberio written to a block. Checking of numberio will be
394 * done only for workloads that write data. For verify_only,
395 * numberio will be checked in the last iteration when the correct
396 * state of numberio, that would have been written to each block
397 * in a previous run of fio, has been reached.
399 if ((td_write(td) || td_rw(td)) && (td_min_bs(td) == td_max_bs(td)) &&
401 if (!td->o.verify_only || td->o.loops == 0)
402 if (vh->numberio != io_u->numberio)
409 log_verify_failure(hdr, vc);
413 static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
415 void *p = io_u_verify_off(hdr, vc);
416 struct vhdr_xxhash *vh = hdr_priv(hdr);
420 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
422 state = XXH32_init(1);
423 XXH32_update(state, p, hdr->len - hdr_size(hdr));
424 hash = XXH32_digest(state);
426 if (vh->hash == hash)
430 vc->good_crc = &vh->hash;
432 vc->crc_len = sizeof(hash);
433 log_verify_failure(hdr, vc);
437 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
439 void *p = io_u_verify_off(hdr, vc);
440 struct vhdr_sha512 *vh = hdr_priv(hdr);
442 struct fio_sha512_ctx sha512_ctx = {
446 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
448 fio_sha512_init(&sha512_ctx);
449 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
451 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
455 vc->good_crc = vh->sha512;
456 vc->bad_crc = sha512_ctx.buf;
457 vc->crc_len = sizeof(vh->sha512);
458 log_verify_failure(hdr, vc);
462 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
464 void *p = io_u_verify_off(hdr, vc);
465 struct vhdr_sha256 *vh = hdr_priv(hdr);
467 struct fio_sha256_ctx sha256_ctx = {
471 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
473 fio_sha256_init(&sha256_ctx);
474 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
475 fio_sha256_final(&sha256_ctx);
477 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
481 vc->good_crc = vh->sha256;
482 vc->bad_crc = sha256_ctx.buf;
483 vc->crc_len = sizeof(vh->sha256);
484 log_verify_failure(hdr, vc);
488 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
490 void *p = io_u_verify_off(hdr, vc);
491 struct vhdr_sha1 *vh = hdr_priv(hdr);
493 struct fio_sha1_ctx sha1_ctx = {
497 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
499 fio_sha1_init(&sha1_ctx);
500 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
501 fio_sha1_final(&sha1_ctx);
503 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
507 vc->good_crc = vh->sha1;
508 vc->bad_crc = sha1_ctx.H;
509 vc->crc_len = sizeof(vh->sha1);
510 log_verify_failure(hdr, vc);
514 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
516 void *p = io_u_verify_off(hdr, vc);
517 struct vhdr_crc7 *vh = hdr_priv(hdr);
520 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
522 c = fio_crc7(p, hdr->len - hdr_size(hdr));
528 vc->good_crc = &vh->crc7;
531 log_verify_failure(hdr, vc);
535 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
537 void *p = io_u_verify_off(hdr, vc);
538 struct vhdr_crc16 *vh = hdr_priv(hdr);
541 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
543 c = fio_crc16(p, hdr->len - hdr_size(hdr));
549 vc->good_crc = &vh->crc16;
552 log_verify_failure(hdr, vc);
556 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
558 void *p = io_u_verify_off(hdr, vc);
559 struct vhdr_crc64 *vh = hdr_priv(hdr);
560 unsigned long long c;
562 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
564 c = fio_crc64(p, hdr->len - hdr_size(hdr));
570 vc->good_crc = &vh->crc64;
573 log_verify_failure(hdr, vc);
577 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
579 void *p = io_u_verify_off(hdr, vc);
580 struct vhdr_crc32 *vh = hdr_priv(hdr);
583 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
585 c = fio_crc32(p, hdr->len - hdr_size(hdr));
591 vc->good_crc = &vh->crc32;
594 log_verify_failure(hdr, vc);
598 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
600 void *p = io_u_verify_off(hdr, vc);
601 struct vhdr_crc32 *vh = hdr_priv(hdr);
604 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
606 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
612 vc->good_crc = &vh->crc32;
615 log_verify_failure(hdr, vc);
619 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
621 void *p = io_u_verify_off(hdr, vc);
622 struct vhdr_md5 *vh = hdr_priv(hdr);
623 uint32_t hash[MD5_HASH_WORDS];
624 struct fio_md5_ctx md5_ctx = {
628 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
630 fio_md5_init(&md5_ctx);
631 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
632 fio_md5_final(&md5_ctx);
634 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
638 vc->good_crc = vh->md5_digest;
639 vc->bad_crc = md5_ctx.hash;
640 vc->crc_len = sizeof(hash);
641 log_verify_failure(hdr, vc);
646 * Push IO verification to a separate thread
648 int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
650 struct io_u *io_u = *io_u_ptr;
652 pthread_mutex_lock(&td->io_u_lock);
655 put_file_log(td, io_u->file);
657 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
659 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
661 flist_add_tail(&io_u->verify_list, &td->verify_list);
663 pthread_mutex_unlock(&td->io_u_lock);
665 pthread_cond_signal(&td->verify_cond);
669 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
671 static char zero_buf[1024];
672 unsigned int this_len, len;
676 if (!td->o.trim_zero)
682 this_len = sizeof(zero_buf);
685 if (memcmp(p, zero_buf, this_len)) {
696 log_err("trim: verify failed at file %s offset %llu, length %lu"
697 ", block offset %lu\n",
698 io_u->file->file_name, io_u->offset, io_u->buflen,
699 (unsigned long) (p - io_u->buf));
703 static int verify_header(struct io_u *io_u, struct verify_header *hdr,
704 unsigned int hdr_num, unsigned int hdr_len)
709 if (hdr->magic != FIO_HDR_MAGIC) {
710 log_err("verify: bad magic header %x, wanted %x",
711 hdr->magic, FIO_HDR_MAGIC);
714 if (hdr->len != hdr_len) {
715 log_err("verify: bad header length %u, wanted %u",
719 if (hdr->rand_seed != io_u->rand_seed) {
720 log_err("verify: bad header rand_seed %"PRIu64
722 hdr->rand_seed, io_u->rand_seed);
726 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
727 if (crc != hdr->crc32) {
728 log_err("verify: bad header crc %x, calculated %x",
735 log_err(" at file %s offset %llu, length %u\n",
736 io_u->file->file_name,
737 io_u->offset + hdr_num * hdr_len, hdr_len);
741 int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
743 struct verify_header *hdr;
744 struct io_u *io_u = *io_u_ptr;
745 unsigned int header_size, hdr_inc, hdr_num = 0;
749 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
752 * If the IO engine is faking IO (like null), then just pretend
753 * we verified everything.
755 if (td->io_ops->flags & FIO_FAKEIO)
758 if (io_u->flags & IO_U_F_TRIMMED) {
759 ret = verify_trimmed_io_u(td, io_u);
763 hdr_inc = get_hdr_inc(td, io_u);
766 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
767 p += hdr_inc, hdr_num++) {
773 unsigned int verify_type;
775 if (ret && td->o.verify_fatal)
778 header_size = __hdr_size(td->o.verify);
779 if (td->o.verify_offset)
780 memswp(p, p + td->o.verify_offset, header_size);
784 * Make rand_seed check pass when have verifysort or
787 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
788 io_u->rand_seed = hdr->rand_seed;
790 ret = verify_header(io_u, hdr, hdr_num, hdr_inc);
794 if (td->o.verify != VERIFY_NONE)
795 verify_type = td->o.verify;
797 verify_type = hdr->verify_type;
799 switch (verify_type) {
801 ret = verify_io_u_md5(hdr, &vc);
804 ret = verify_io_u_crc64(hdr, &vc);
807 case VERIFY_CRC32C_INTEL:
808 ret = verify_io_u_crc32c(hdr, &vc);
811 ret = verify_io_u_crc32(hdr, &vc);
814 ret = verify_io_u_crc16(hdr, &vc);
817 ret = verify_io_u_crc7(hdr, &vc);
820 ret = verify_io_u_sha256(hdr, &vc);
823 ret = verify_io_u_sha512(hdr, &vc);
826 ret = verify_io_u_xxhash(hdr, &vc);
829 ret = verify_io_u_meta(hdr, &vc);
832 ret = verify_io_u_sha1(hdr, &vc);
835 ret = verify_io_u_pattern(hdr, &vc);
838 log_err("Bad verify type %u\n", hdr->verify_type);
842 if (ret && verify_type != hdr->verify_type)
843 log_err("fio: verify type mismatch (%u media, %u given)\n",
844 hdr->verify_type, verify_type);
848 if (ret && td->o.verify_fatal)
849 fio_mark_td_terminate(td);
854 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
855 struct io_u *io_u, unsigned int header_num)
857 struct vhdr_meta *vh = hdr_priv(hdr);
859 vh->thread = td->thread_number;
861 vh->time_sec = io_u->start_time.tv_sec;
862 vh->time_usec = io_u->start_time.tv_usec;
864 vh->numberio = io_u->numberio;
866 vh->offset = io_u->offset + header_num * td->o.verify_interval;
869 static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
871 struct vhdr_xxhash *vh = hdr_priv(hdr);
874 state = XXH32_init(1);
875 XXH32_update(state, p, len);
876 vh->hash = XXH32_digest(state);
879 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
881 struct vhdr_sha512 *vh = hdr_priv(hdr);
882 struct fio_sha512_ctx sha512_ctx = {
886 fio_sha512_init(&sha512_ctx);
887 fio_sha512_update(&sha512_ctx, p, len);
890 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
892 struct vhdr_sha256 *vh = hdr_priv(hdr);
893 struct fio_sha256_ctx sha256_ctx = {
897 fio_sha256_init(&sha256_ctx);
898 fio_sha256_update(&sha256_ctx, p, len);
899 fio_sha256_final(&sha256_ctx);
902 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
904 struct vhdr_sha1 *vh = hdr_priv(hdr);
905 struct fio_sha1_ctx sha1_ctx = {
909 fio_sha1_init(&sha1_ctx);
910 fio_sha1_update(&sha1_ctx, p, len);
911 fio_sha1_final(&sha1_ctx);
914 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
916 struct vhdr_crc7 *vh = hdr_priv(hdr);
918 vh->crc7 = fio_crc7(p, len);
921 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
923 struct vhdr_crc16 *vh = hdr_priv(hdr);
925 vh->crc16 = fio_crc16(p, len);
928 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
930 struct vhdr_crc32 *vh = hdr_priv(hdr);
932 vh->crc32 = fio_crc32(p, len);
935 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
937 struct vhdr_crc32 *vh = hdr_priv(hdr);
939 vh->crc32 = fio_crc32c(p, len);
942 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
944 struct vhdr_crc64 *vh = hdr_priv(hdr);
946 vh->crc64 = fio_crc64(p, len);
949 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
951 struct vhdr_md5 *vh = hdr_priv(hdr);
952 struct fio_md5_ctx md5_ctx = {
953 .hash = (uint32_t *) vh->md5_digest,
956 fio_md5_init(&md5_ctx);
957 fio_md5_update(&md5_ctx, p, len);
958 fio_md5_final(&md5_ctx);
961 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
962 struct verify_header *hdr, unsigned int header_num,
963 unsigned int header_len)
965 unsigned int data_len;
970 hdr->magic = FIO_HDR_MAGIC;
971 hdr->verify_type = td->o.verify;
972 hdr->len = header_len;
973 hdr->rand_seed = io_u->rand_seed;
974 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
976 data_len = header_len - hdr_size(hdr);
978 data = p + hdr_size(hdr);
979 switch (td->o.verify) {
981 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
983 fill_md5(hdr, data, data_len);
986 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
988 fill_crc64(hdr, data, data_len);
991 case VERIFY_CRC32C_INTEL:
992 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
994 fill_crc32c(hdr, data, data_len);
997 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
999 fill_crc32(hdr, data, data_len);
1002 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1004 fill_crc16(hdr, data, data_len);
1007 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1009 fill_crc7(hdr, data, data_len);
1012 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1014 fill_sha256(hdr, data, data_len);
1017 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1019 fill_sha512(hdr, data, data_len);
1022 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1024 fill_xxhash(hdr, data, data_len);
1027 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
1029 fill_meta(hdr, td, io_u, header_num);
1032 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1034 fill_sha1(hdr, data, data_len);
1036 case VERIFY_PATTERN:
1037 /* nothing to do here */
1040 log_err("fio: bad verify type: %d\n", td->o.verify);
1043 if (td->o.verify_offset)
1044 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
1048 * fill body of io_u->buf with random data and add a header with the
1049 * checksum of choice
1051 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1053 if (td->o.verify == VERIFY_NULL)
1056 io_u->numberio = td->io_issues[io_u->ddir];
1058 fill_pattern_headers(td, io_u, 0, 0);
1061 int get_next_verify(struct thread_data *td, struct io_u *io_u)
1063 struct io_piece *ipo = NULL;
1066 * this io_u is from a requeue, we already filled the offsets
1071 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1072 struct rb_node *n = rb_first(&td->io_hist_tree);
1074 ipo = rb_entry(n, struct io_piece, rb_node);
1077 * Ensure that the associated IO has completed
1080 if (ipo->flags & IP_F_IN_FLIGHT)
1083 rb_erase(n, &td->io_hist_tree);
1084 assert(ipo->flags & IP_F_ONRB);
1085 ipo->flags &= ~IP_F_ONRB;
1086 } else if (!flist_empty(&td->io_hist_list)) {
1087 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1090 * Ensure that the associated IO has completed
1093 if (ipo->flags & IP_F_IN_FLIGHT)
1096 flist_del(&ipo->list);
1097 assert(ipo->flags & IP_F_ONLIST);
1098 ipo->flags &= ~IP_F_ONLIST;
1104 io_u->offset = ipo->offset;
1105 io_u->buflen = ipo->len;
1106 io_u->numberio = ipo->numberio;
1107 io_u->file = ipo->file;
1108 io_u->flags |= IO_U_F_VER_LIST;
1110 if (ipo->flags & IP_F_TRIMMED)
1111 io_u->flags |= IO_U_F_TRIMMED;
1113 if (!fio_file_open(io_u->file)) {
1114 int r = td_io_open_file(td, io_u->file);
1117 dprint(FD_VERIFY, "failed file %s open\n",
1118 io_u->file->file_name);
1123 get_file(ipo->file);
1124 assert(fio_file_open(io_u->file));
1125 io_u->ddir = DDIR_READ;
1126 io_u->xfer_buf = io_u->buf;
1127 io_u->xfer_buflen = io_u->buflen;
1129 remove_trim_entry(td, ipo);
1131 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1133 if (!td->o.verify_pattern_bytes) {
1134 io_u->rand_seed = __rand(&td->verify_state);
1135 if (sizeof(int) != sizeof(long *))
1136 io_u->rand_seed *= __rand(&td->verify_state);
1142 dprint(FD_VERIFY, "get_next_verify: empty\n");
1146 void fio_verify_init(struct thread_data *td)
1148 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1149 td->o.verify == VERIFY_CRC32C) {
1150 crc32c_intel_probe();
1154 static void *verify_async_thread(void *data)
1156 struct thread_data *td = data;
1160 if (fio_option_is_set(&td->o, verify_cpumask) &&
1161 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1162 log_err("fio: failed setting verify thread affinity\n");
1170 if (td->verify_thread_exit)
1173 pthread_mutex_lock(&td->io_u_lock);
1175 while (flist_empty(&td->verify_list) &&
1176 !td->verify_thread_exit) {
1177 ret = pthread_cond_wait(&td->verify_cond,
1180 pthread_mutex_unlock(&td->io_u_lock);
1185 flist_splice_init(&td->verify_list, &list);
1186 pthread_mutex_unlock(&td->io_u_lock);
1188 if (flist_empty(&list))
1191 while (!flist_empty(&list)) {
1192 io_u = flist_first_entry(&list, struct io_u, verify_list);
1193 flist_del_init(&io_u->verify_list);
1195 io_u->flags |= IO_U_F_NO_FILE_PUT;
1196 ret = verify_io_u(td, &io_u);
1201 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1202 update_error_count(td, ret);
1210 td_verror(td, ret, "async_verify");
1211 if (td->o.verify_fatal)
1212 fio_mark_td_terminate(td);
1216 pthread_mutex_lock(&td->io_u_lock);
1217 td->nr_verify_threads--;
1218 pthread_mutex_unlock(&td->io_u_lock);
1220 pthread_cond_signal(&td->free_cond);
1224 int verify_async_init(struct thread_data *td)
1227 pthread_attr_t attr;
1229 pthread_attr_init(&attr);
1230 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1232 td->verify_thread_exit = 0;
1234 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1235 for (i = 0; i < td->o.verify_async; i++) {
1236 ret = pthread_create(&td->verify_threads[i], &attr,
1237 verify_async_thread, td);
1239 log_err("fio: async verify creation failed: %s\n",
1243 ret = pthread_detach(td->verify_threads[i]);
1245 log_err("fio: async verify thread detach failed: %s\n",
1249 td->nr_verify_threads++;
1252 pthread_attr_destroy(&attr);
1254 if (i != td->o.verify_async) {
1255 log_err("fio: only %d verify threads started, exiting\n", i);
1256 td->verify_thread_exit = 1;
1258 pthread_cond_broadcast(&td->verify_cond);
1265 void verify_async_exit(struct thread_data *td)
1267 td->verify_thread_exit = 1;
1269 pthread_cond_broadcast(&td->verify_cond);
1271 pthread_mutex_lock(&td->io_u_lock);
1273 while (td->nr_verify_threads)
1274 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1276 pthread_mutex_unlock(&td->io_u_lock);
1277 free(td->verify_threads);
1278 td->verify_threads = NULL;
1281 struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1283 struct all_io_list *rep;
1284 struct thread_data *td;
1289 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1292 * Calculate reply space needed. We need one 'io_state' per thread,
1293 * and the size will vary depending on depth.
1297 for_each_td(td, i) {
1298 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1301 td->flags |= TD_F_VSTATE_SAVED;
1302 depth += td->o.iodepth;
1310 *sz += nr * sizeof(struct thread_io_list);
1311 *sz += depth * sizeof(uint64_t);
1314 rep->threads = cpu_to_le64((uint64_t) nr);
1316 next = &rep->state[0];
1317 for_each_td(td, i) {
1318 struct thread_io_list *s = next;
1321 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1324 if (td->last_write_comp) {
1327 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1328 comps = td->io_blocks[DDIR_WRITE];
1330 comps = td->o.iodepth;
1332 k = td->last_write_idx - 1;
1333 for (j = 0; j < comps; j++) {
1335 k = td->o.iodepth - 1;
1336 s->offsets[j] = cpu_to_le64(td->last_write_comp[k]);
1342 s->no_comps = cpu_to_le64((uint64_t) comps);
1343 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1344 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1345 s->index = cpu_to_le64((uint64_t) i);
1346 s->rand.s[0] = cpu_to_le32(td->random_state.s1);
1347 s->rand.s[1] = cpu_to_le32(td->random_state.s2);
1348 s->rand.s[2] = cpu_to_le32(td->random_state.s3);
1350 s->name[sizeof(s->name) - 1] = '\0';
1351 strncpy((char *) s->name, td->o.name, sizeof(s->name) - 1);
1352 next = io_list_next(s);
1358 static int open_state_file(const char *name, const char *prefix, int num,
1366 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1370 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1372 fd = open(out, flags, 0644);
1374 perror("fio: open state file");
1381 static int write_thread_list_state(struct thread_io_list *s,
1384 struct verify_state_hdr hdr;
1389 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1393 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1395 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1396 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1397 hdr.crc = cpu_to_le64(crc);
1398 ret = write(fd, &hdr, sizeof(hdr));
1399 if (ret != sizeof(hdr))
1402 ret = write(fd, s, thread_io_list_sz(s));
1403 if (ret != thread_io_list_sz(s)) {
1406 perror("fio: write state file");
1407 log_err("fio: failed to write state file\n");
1416 void __verify_save_state(struct all_io_list *state, const char *prefix)
1418 struct thread_io_list *s = &state->state[0];
1421 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1422 write_thread_list_state(s, prefix);
1423 s = io_list_next(s);
1427 void verify_save_state(void)
1429 struct all_io_list *state;
1432 state = get_all_io_list(IO_LIST_ALL, &sz);
1434 __verify_save_state(state, "local");
1439 void verify_free_state(struct thread_data *td)
1445 void verify_convert_assign_state(struct thread_data *td,
1446 struct thread_io_list *s)
1450 s->no_comps = le64_to_cpu(s->no_comps);
1451 s->depth = le64_to_cpu(s->depth);
1452 s->numberio = le64_to_cpu(s->numberio);
1453 for (i = 0; i < 4; i++)
1454 s->rand.s[i] = le32_to_cpu(s->rand.s[i]);
1455 for (i = 0; i < s->no_comps; i++)
1456 s->offsets[i] = le64_to_cpu(s->offsets[i]);
1461 int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1465 hdr->version = le64_to_cpu(hdr->version);
1466 hdr->size = le64_to_cpu(hdr->size);
1467 hdr->crc = le64_to_cpu(hdr->crc);
1469 if (hdr->version != VSTATE_HDR_VERSION)
1472 crc = fio_crc32c((void *)s, hdr->size);
1473 if (crc != hdr->crc)
1479 int verify_load_state(struct thread_data *td, const char *prefix)
1481 struct thread_io_list *s = NULL;
1482 struct verify_state_hdr hdr;
1487 if (!td->o.verify_state)
1490 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1494 ret = read(fd, &hdr, sizeof(hdr));
1495 if (ret != sizeof(hdr)) {
1497 td_verror(td, errno, "read verify state hdr");
1498 log_err("fio: failed reading verify state header\n");
1502 hdr.version = le64_to_cpu(hdr.version);
1503 hdr.size = le64_to_cpu(hdr.size);
1504 hdr.crc = le64_to_cpu(hdr.crc);
1506 if (hdr.version != VSTATE_HDR_VERSION) {
1507 log_err("fio: bad version in verify state header\n");
1511 s = malloc(hdr.size);
1512 ret = read(fd, s, hdr.size);
1513 if (ret != hdr.size) {
1515 td_verror(td, errno, "read verify state");
1516 log_err("fio: failed reading verity state\n");
1520 crc = fio_crc32c((void *)s, hdr.size);
1521 if (crc != hdr.crc) {
1522 log_err("fio: verify state is corrupt\n");
1528 verify_convert_assign_state(td, s);
1538 * Use the loaded verify state to know when to stop doing verification
1540 int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1542 struct thread_io_list *s = td->vstate;
1549 * If we're not into the window of issues - depth yet, continue. If
1550 * issue is shorter than depth, do check.
1552 if ((td->io_blocks[DDIR_READ] < s->depth ||
1553 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1554 s->numberio > s->depth)
1558 * We're in the window of having to check if this io was
1559 * completed or not. If the IO was seen as completed, then
1562 for (i = 0; i < s->no_comps; i++)
1563 if (io_u->offset == s->offsets[i])
1567 * Not found, we have to stop