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);
390 log_verify_failure(hdr, vc);
394 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
396 void *p = io_u_verify_off(hdr, vc);
397 struct vhdr_sha512 *vh = hdr_priv(hdr);
399 struct fio_sha512_ctx sha512_ctx = {
403 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
405 fio_sha512_init(&sha512_ctx);
406 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
408 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
412 vc->good_crc = vh->sha512;
413 vc->bad_crc = sha512_ctx.buf;
414 vc->crc_len = sizeof(vh->sha512);
415 log_verify_failure(hdr, vc);
419 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
421 void *p = io_u_verify_off(hdr, vc);
422 struct vhdr_sha256 *vh = hdr_priv(hdr);
424 struct fio_sha256_ctx sha256_ctx = {
428 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
430 fio_sha256_init(&sha256_ctx);
431 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
433 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
437 vc->good_crc = vh->sha256;
438 vc->bad_crc = sha256_ctx.buf;
439 vc->crc_len = sizeof(vh->sha256);
440 log_verify_failure(hdr, vc);
444 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
446 void *p = io_u_verify_off(hdr, vc);
447 struct vhdr_sha1 *vh = hdr_priv(hdr);
449 struct fio_sha1_ctx sha1_ctx = {
453 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
455 fio_sha1_init(&sha1_ctx);
456 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
458 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
462 vc->good_crc = vh->sha1;
463 vc->bad_crc = sha1_ctx.H;
464 vc->crc_len = sizeof(vh->sha1);
465 log_verify_failure(hdr, vc);
469 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
471 void *p = io_u_verify_off(hdr, vc);
472 struct vhdr_crc7 *vh = hdr_priv(hdr);
475 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
477 c = fio_crc7(p, hdr->len - hdr_size(hdr));
483 vc->good_crc = &vh->crc7;
486 log_verify_failure(hdr, vc);
490 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
492 void *p = io_u_verify_off(hdr, vc);
493 struct vhdr_crc16 *vh = hdr_priv(hdr);
496 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
498 c = fio_crc16(p, hdr->len - hdr_size(hdr));
504 vc->good_crc = &vh->crc16;
507 log_verify_failure(hdr, vc);
511 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
513 void *p = io_u_verify_off(hdr, vc);
514 struct vhdr_crc64 *vh = hdr_priv(hdr);
515 unsigned long long c;
517 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
519 c = fio_crc64(p, hdr->len - hdr_size(hdr));
525 vc->good_crc = &vh->crc64;
528 log_verify_failure(hdr, vc);
532 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
534 void *p = io_u_verify_off(hdr, vc);
535 struct vhdr_crc32 *vh = hdr_priv(hdr);
538 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
540 c = fio_crc32(p, hdr->len - hdr_size(hdr));
546 vc->good_crc = &vh->crc32;
549 log_verify_failure(hdr, vc);
553 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
555 void *p = io_u_verify_off(hdr, vc);
556 struct vhdr_crc32 *vh = hdr_priv(hdr);
559 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
561 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
567 vc->good_crc = &vh->crc32;
570 log_verify_failure(hdr, vc);
574 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
576 void *p = io_u_verify_off(hdr, vc);
577 struct vhdr_md5 *vh = hdr_priv(hdr);
578 uint32_t hash[MD5_HASH_WORDS];
579 struct fio_md5_ctx md5_ctx = {
583 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
585 fio_md5_init(&md5_ctx);
586 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
588 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
592 vc->good_crc = vh->md5_digest;
593 vc->bad_crc = md5_ctx.hash;
594 vc->crc_len = sizeof(hash);
595 log_verify_failure(hdr, vc);
600 * Push IO verification to a separate thread
602 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
605 put_file_log(td, io_u->file);
607 pthread_mutex_lock(&td->io_u_lock);
609 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
611 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
613 flist_add_tail(&io_u->verify_list, &td->verify_list);
614 io_u->flags |= IO_U_F_FREE_DEF;
615 pthread_mutex_unlock(&td->io_u_lock);
617 pthread_cond_signal(&td->verify_cond);
621 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
623 static char zero_buf[1024];
624 unsigned int this_len, len;
628 if (!td->o.trim_zero)
634 this_len = sizeof(zero_buf);
637 if (memcmp(p, zero_buf, this_len)) {
648 log_err("trim: verify failed at file %s offset %llu, length %lu"
649 ", block offset %lu\n",
650 io_u->file->file_name, io_u->offset, io_u->buflen,
651 (unsigned long) (p - io_u->buf));
655 static int verify_header(struct io_u *io_u, struct verify_header *hdr)
660 if (hdr->magic != FIO_HDR_MAGIC)
662 if (hdr->len > io_u->buflen) {
663 log_err("fio: verify header exceeds buffer length (%u > %lu)\n", hdr->len, io_u->buflen);
667 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
668 if (crc == hdr->crc32)
671 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
675 int verify_io_u(struct thread_data *td, struct io_u *io_u)
677 struct verify_header *hdr;
678 unsigned int header_size, hdr_inc, hdr_num = 0;
682 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
684 if (io_u->flags & IO_U_F_TRIMMED) {
685 ret = verify_trimmed_io_u(td, io_u);
689 hdr_inc = get_hdr_inc(td, io_u);
692 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
693 p += hdr_inc, hdr_num++) {
699 unsigned int verify_type;
701 if (ret && td->o.verify_fatal)
704 header_size = __hdr_size(td->o.verify);
705 if (td->o.verify_offset)
706 memswp(p, p + td->o.verify_offset, header_size);
709 if (!verify_header(io_u, hdr)) {
710 log_err("verify: bad magic header %x, wanted %x at "
711 "file %s offset %llu, length %u\n",
712 hdr->magic, FIO_HDR_MAGIC,
713 io_u->file->file_name,
714 io_u->offset + hdr_num * hdr->len, hdr->len);
718 if (td->o.verify != VERIFY_NONE)
719 verify_type = td->o.verify;
721 verify_type = hdr->verify_type;
723 switch (verify_type) {
725 ret = verify_io_u_md5(hdr, &vc);
728 ret = verify_io_u_crc64(hdr, &vc);
731 case VERIFY_CRC32C_INTEL:
732 ret = verify_io_u_crc32c(hdr, &vc);
735 ret = verify_io_u_crc32(hdr, &vc);
738 ret = verify_io_u_crc16(hdr, &vc);
741 ret = verify_io_u_crc7(hdr, &vc);
744 ret = verify_io_u_sha256(hdr, &vc);
747 ret = verify_io_u_sha512(hdr, &vc);
750 ret = verify_io_u_meta(hdr, &vc);
753 ret = verify_io_u_sha1(hdr, &vc);
756 ret = verify_io_u_pattern(hdr, &vc);
759 log_err("Bad verify type %u\n", hdr->verify_type);
763 if (ret && verify_type != hdr->verify_type)
764 log_err("fio: verify type mismatch (%u media, %u given)\n",
765 hdr->verify_type, verify_type);
769 if (ret && td->o.verify_fatal)
775 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
776 struct io_u *io_u, unsigned int header_num)
778 struct vhdr_meta *vh = hdr_priv(hdr);
780 vh->thread = td->thread_number;
782 vh->time_sec = io_u->start_time.tv_sec;
783 vh->time_usec = io_u->start_time.tv_usec;
785 vh->numberio = td->io_issues[DDIR_WRITE];
787 vh->offset = io_u->offset + header_num * td->o.verify_interval;
790 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
792 struct vhdr_sha512 *vh = hdr_priv(hdr);
793 struct fio_sha512_ctx sha512_ctx = {
797 fio_sha512_init(&sha512_ctx);
798 fio_sha512_update(&sha512_ctx, p, len);
801 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
803 struct vhdr_sha256 *vh = hdr_priv(hdr);
804 struct fio_sha256_ctx sha256_ctx = {
808 fio_sha256_init(&sha256_ctx);
809 fio_sha256_update(&sha256_ctx, p, len);
812 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
814 struct vhdr_sha1 *vh = hdr_priv(hdr);
815 struct fio_sha1_ctx sha1_ctx = {
819 fio_sha1_init(&sha1_ctx);
820 fio_sha1_update(&sha1_ctx, p, len);
823 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
825 struct vhdr_crc7 *vh = hdr_priv(hdr);
827 vh->crc7 = fio_crc7(p, len);
830 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
832 struct vhdr_crc16 *vh = hdr_priv(hdr);
834 vh->crc16 = fio_crc16(p, len);
837 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
839 struct vhdr_crc32 *vh = hdr_priv(hdr);
841 vh->crc32 = fio_crc32(p, len);
844 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
846 struct vhdr_crc32 *vh = hdr_priv(hdr);
848 vh->crc32 = fio_crc32c(p, len);
851 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
853 struct vhdr_crc64 *vh = hdr_priv(hdr);
855 vh->crc64 = fio_crc64(p, len);
858 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
860 struct vhdr_md5 *vh = hdr_priv(hdr);
861 struct fio_md5_ctx md5_ctx = {
862 .hash = (uint32_t *) vh->md5_digest,
865 fio_md5_init(&md5_ctx);
866 fio_md5_update(&md5_ctx, p, len);
869 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
870 struct verify_header *hdr, unsigned int header_num,
871 unsigned int header_len)
873 unsigned int data_len;
878 hdr->magic = FIO_HDR_MAGIC;
879 hdr->verify_type = td->o.verify;
880 hdr->len = header_len;
881 hdr->rand_seed = io_u->rand_seed;
882 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
884 data_len = header_len - hdr_size(hdr);
886 data = p + hdr_size(hdr);
887 switch (td->o.verify) {
889 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
891 fill_md5(hdr, data, data_len);
894 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
896 fill_crc64(hdr, data, data_len);
899 case VERIFY_CRC32C_INTEL:
900 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
902 fill_crc32c(hdr, data, data_len);
905 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
907 fill_crc32(hdr, data, data_len);
910 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
912 fill_crc16(hdr, data, data_len);
915 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
917 fill_crc7(hdr, data, data_len);
920 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
922 fill_sha256(hdr, data, data_len);
925 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
927 fill_sha512(hdr, data, data_len);
930 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
932 fill_meta(hdr, td, io_u, header_num);
935 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
937 fill_sha1(hdr, data, data_len);
940 /* nothing to do here */
943 log_err("fio: bad verify type: %d\n", td->o.verify);
946 if (td->o.verify_offset)
947 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
951 * fill body of io_u->buf with random data and add a header with the
954 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
956 if (td->o.verify == VERIFY_NULL)
959 fill_pattern_headers(td, io_u, 0, 0);
962 int get_next_verify(struct thread_data *td, struct io_u *io_u)
964 struct io_piece *ipo = NULL;
967 * this io_u is from a requeue, we already filled the offsets
972 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
973 struct rb_node *n = rb_first(&td->io_hist_tree);
975 ipo = rb_entry(n, struct io_piece, rb_node);
976 rb_erase(n, &td->io_hist_tree);
977 assert(ipo->flags & IP_F_ONRB);
978 ipo->flags &= ~IP_F_ONRB;
979 } else if (!flist_empty(&td->io_hist_list)) {
980 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
981 flist_del(&ipo->list);
982 assert(ipo->flags & IP_F_ONLIST);
983 ipo->flags &= ~IP_F_ONLIST;
989 io_u->offset = ipo->offset;
990 io_u->buflen = ipo->len;
991 io_u->file = ipo->file;
992 io_u->flags |= IO_U_F_VER_LIST;
994 if (ipo->flags & IP_F_TRIMMED)
995 io_u->flags |= IO_U_F_TRIMMED;
997 if (!fio_file_open(io_u->file)) {
998 int r = td_io_open_file(td, io_u->file);
1001 dprint(FD_VERIFY, "failed file %s open\n",
1002 io_u->file->file_name);
1007 get_file(ipo->file);
1008 assert(fio_file_open(io_u->file));
1009 io_u->ddir = DDIR_READ;
1010 io_u->xfer_buf = io_u->buf;
1011 io_u->xfer_buflen = io_u->buflen;
1013 remove_trim_entry(td, ipo);
1015 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1019 dprint(FD_VERIFY, "get_next_verify: empty\n");
1023 void fio_verify_init(struct thread_data *td)
1025 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1026 td->o.verify == VERIFY_CRC32C) {
1027 crc32c_intel_probe();
1031 static void *verify_async_thread(void *data)
1033 struct thread_data *td = data;
1037 if (td->o.verify_cpumask_set &&
1038 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1039 log_err("fio: failed setting verify thread affinity\n");
1047 if (td->verify_thread_exit)
1050 pthread_mutex_lock(&td->io_u_lock);
1052 while (flist_empty(&td->verify_list) &&
1053 !td->verify_thread_exit) {
1054 ret = pthread_cond_wait(&td->verify_cond,
1057 pthread_mutex_unlock(&td->io_u_lock);
1062 flist_splice_init(&td->verify_list, &list);
1063 pthread_mutex_unlock(&td->io_u_lock);
1065 if (flist_empty(&list))
1068 while (!flist_empty(&list)) {
1069 io_u = flist_entry(list.next, struct io_u, verify_list);
1070 flist_del(&io_u->verify_list);
1072 ret = verify_io_u(td, io_u);
1076 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1077 update_error_count(td, ret);
1085 td_verror(td, ret, "async_verify");
1086 if (td->o.verify_fatal)
1091 pthread_mutex_lock(&td->io_u_lock);
1092 td->nr_verify_threads--;
1093 pthread_mutex_unlock(&td->io_u_lock);
1095 pthread_cond_signal(&td->free_cond);
1099 int verify_async_init(struct thread_data *td)
1102 pthread_attr_t attr;
1104 pthread_attr_init(&attr);
1105 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1107 td->verify_thread_exit = 0;
1109 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1110 for (i = 0; i < td->o.verify_async; i++) {
1111 ret = pthread_create(&td->verify_threads[i], &attr,
1112 verify_async_thread, td);
1114 log_err("fio: async verify creation failed: %s\n",
1118 ret = pthread_detach(td->verify_threads[i]);
1120 log_err("fio: async verify thread detach failed: %s\n",
1124 td->nr_verify_threads++;
1127 pthread_attr_destroy(&attr);
1129 if (i != td->o.verify_async) {
1130 log_err("fio: only %d verify threads started, exiting\n", i);
1131 td->verify_thread_exit = 1;
1133 pthread_cond_broadcast(&td->verify_cond);
1140 void verify_async_exit(struct thread_data *td)
1142 td->verify_thread_exit = 1;
1144 pthread_cond_broadcast(&td->verify_cond);
1146 pthread_mutex_lock(&td->io_u_lock);
1148 while (td->nr_verify_threads)
1149 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1151 pthread_mutex_unlock(&td->io_u_lock);
1152 free(td->verify_threads);
1153 td->verify_threads = NULL;