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 void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)
33 switch (td->o.verify_pattern_bytes) {
35 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
37 __fill_random_buf(p, len, seed);
39 io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);
42 if (io_u->buf_filled_len >= len) {
43 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
46 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
47 memset(p, td->o.verify_pattern[0], len);
48 io_u->buf_filled_len = len;
51 unsigned int i = 0, size = 0;
54 if (io_u->buf_filled_len >= len) {
55 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
56 td->o.verify_pattern_bytes, len);
60 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
61 td->o.verify_pattern_bytes, len);
64 size = td->o.verify_pattern_bytes;
67 memcpy(b+i, td->o.verify_pattern, size);
70 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_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 seperation 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_meta);
165 len = sizeof(struct vhdr_sha1);
171 log_err("fio: unknown verify header!\n");
175 return len + sizeof(struct verify_header);
178 static inline unsigned int hdr_size(struct verify_header *hdr)
180 return __hdr_size(hdr->verify_type);
183 static void *hdr_priv(struct verify_header *hdr)
187 return priv + sizeof(struct verify_header);
191 * Verify container, pass info to verify handlers and allow them to
192 * pass info back in case of error
199 unsigned int hdr_num;
200 struct thread_data *td;
203 * Output, only valid in case of error
208 unsigned int crc_len;
211 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
212 const char *type, struct fio_file *f)
214 char *ptr, fname[256];
217 ptr = strdup(f->file_name);
218 strcpy(fname, basename(ptr));
220 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
222 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
224 perror("open verify buf file");
229 ret = write(fd, buf, len);
233 perror("write verify buf file");
241 log_err(" %s data dumped as %s\n", type, fname);
246 * Dump the contents of the read block and re-generate the correct data
249 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
251 struct thread_data *td = vc->td;
252 struct io_u *io_u = vc->io_u;
253 unsigned long hdr_offset;
257 if (!td->o.verify_dump)
261 * Dump the contents we just read off disk
263 hdr_offset = vc->hdr_num * hdr->len;
265 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
266 "received", vc->io_u->file);
269 * Allocate a new buf and re-generate the original data
271 buf = malloc(io_u->buflen);
274 dummy.rand_seed = hdr->rand_seed;
275 dummy.buf_filled_len = 0;
276 dummy.buflen = io_u->buflen;
278 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
280 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
281 "expected", vc->io_u->file);
285 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
287 unsigned long long offset;
289 offset = vc->io_u->offset;
290 offset += vc->hdr_num * hdr->len;
291 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
292 vc->name, vc->io_u->file->file_name, offset, hdr->len);
294 if (vc->good_crc && vc->bad_crc) {
295 log_err(" Expected CRC: ");
296 hexdump(vc->good_crc, vc->crc_len);
297 log_err(" Received CRC: ");
298 hexdump(vc->bad_crc, vc->crc_len);
301 dump_verify_buffers(hdr, vc);
305 * Return data area 'header_num'
307 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
309 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
312 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
314 struct thread_data *td = vc->td;
315 struct io_u *io_u = vc->io_u;
317 unsigned int header_size = __hdr_size(td->o.verify);
318 unsigned int len, mod, i, size, pattern_size;
320 pattern = td->o.verify_pattern;
321 pattern_size = td->o.verify_pattern_bytes;
322 if (pattern_size <= 1)
323 pattern_size = MAX_PATTERN_SIZE;
324 buf = (void *) hdr + header_size;
325 len = get_hdr_inc(td, io_u) - header_size;
326 mod = header_size % pattern_size;
328 for (i = 0; i < len; i += size) {
329 size = pattern_size - mod;
330 if (size > (len - i))
332 if (memcmp(buf + i, pattern + mod, size))
333 /* Let the slow compare find the first mismatch byte. */
338 for (; i < len; i++) {
339 if (buf[i] != pattern[mod]) {
342 bits = hweight8(buf[i] ^ pattern[mod]);
343 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
344 buf[i], pattern[mod], bits);
345 log_err("fio: bad pattern block offset %u\n", i);
346 dump_verify_buffers(hdr, vc);
350 if (mod == td->o.verify_pattern_bytes)
357 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
359 struct thread_data *td = vc->td;
360 struct vhdr_meta *vh = hdr_priv(hdr);
361 struct io_u *io_u = vc->io_u;
364 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
366 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
369 if (td->o.verify_pattern_bytes)
370 ret |= verify_io_u_pattern(hdr, vc);
376 log_verify_failure(hdr, vc);
380 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
382 void *p = io_u_verify_off(hdr, vc);
383 struct vhdr_sha512 *vh = hdr_priv(hdr);
385 struct fio_sha512_ctx sha512_ctx = {
389 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
391 fio_sha512_init(&sha512_ctx);
392 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
394 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
398 vc->good_crc = vh->sha512;
399 vc->bad_crc = sha512_ctx.buf;
400 vc->crc_len = sizeof(vh->sha512);
401 log_verify_failure(hdr, vc);
405 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
407 void *p = io_u_verify_off(hdr, vc);
408 struct vhdr_sha256 *vh = hdr_priv(hdr);
410 struct fio_sha256_ctx sha256_ctx = {
414 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
416 fio_sha256_init(&sha256_ctx);
417 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
419 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
423 vc->good_crc = vh->sha256;
424 vc->bad_crc = sha256_ctx.buf;
425 vc->crc_len = sizeof(vh->sha256);
426 log_verify_failure(hdr, vc);
430 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
432 void *p = io_u_verify_off(hdr, vc);
433 struct vhdr_sha1 *vh = hdr_priv(hdr);
435 struct fio_sha1_ctx sha1_ctx = {
439 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
441 fio_sha1_init(&sha1_ctx);
442 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
444 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
448 vc->good_crc = vh->sha1;
449 vc->bad_crc = sha1_ctx.H;
450 vc->crc_len = sizeof(vh->sha1);
451 log_verify_failure(hdr, vc);
455 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
457 void *p = io_u_verify_off(hdr, vc);
458 struct vhdr_crc7 *vh = hdr_priv(hdr);
461 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
463 c = fio_crc7(p, hdr->len - hdr_size(hdr));
469 vc->good_crc = &vh->crc7;
472 log_verify_failure(hdr, vc);
476 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
478 void *p = io_u_verify_off(hdr, vc);
479 struct vhdr_crc16 *vh = hdr_priv(hdr);
482 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
484 c = fio_crc16(p, hdr->len - hdr_size(hdr));
490 vc->good_crc = &vh->crc16;
493 log_verify_failure(hdr, vc);
497 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
499 void *p = io_u_verify_off(hdr, vc);
500 struct vhdr_crc64 *vh = hdr_priv(hdr);
501 unsigned long long c;
503 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
505 c = fio_crc64(p, hdr->len - hdr_size(hdr));
511 vc->good_crc = &vh->crc64;
514 log_verify_failure(hdr, vc);
518 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
520 void *p = io_u_verify_off(hdr, vc);
521 struct vhdr_crc32 *vh = hdr_priv(hdr);
524 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
526 c = fio_crc32(p, hdr->len - hdr_size(hdr));
532 vc->good_crc = &vh->crc32;
535 log_verify_failure(hdr, vc);
539 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
541 void *p = io_u_verify_off(hdr, vc);
542 struct vhdr_crc32 *vh = hdr_priv(hdr);
545 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
547 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
553 vc->good_crc = &vh->crc32;
556 log_verify_failure(hdr, vc);
560 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
562 void *p = io_u_verify_off(hdr, vc);
563 struct vhdr_md5 *vh = hdr_priv(hdr);
564 uint32_t hash[MD5_HASH_WORDS];
565 struct fio_md5_ctx md5_ctx = {
569 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
571 fio_md5_init(&md5_ctx);
572 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
574 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
578 vc->good_crc = vh->md5_digest;
579 vc->bad_crc = md5_ctx.hash;
580 vc->crc_len = sizeof(hash);
581 log_verify_failure(hdr, vc);
586 * Push IO verification to a separate thread
588 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
591 put_file_log(td, io_u->file);
593 pthread_mutex_lock(&td->io_u_lock);
595 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
597 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
599 flist_add_tail(&io_u->verify_list, &td->verify_list);
600 io_u->flags |= IO_U_F_FREE_DEF;
601 pthread_mutex_unlock(&td->io_u_lock);
603 pthread_cond_signal(&td->verify_cond);
607 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
609 static char zero_buf[1024];
610 unsigned int this_len, len;
614 if (!td->o.trim_zero)
620 this_len = sizeof(zero_buf);
623 if (memcmp(p, zero_buf, this_len)) {
634 log_err("trim: verify failed at file %s offset %llu, length %lu"
635 ", block offset %lu\n",
636 io_u->file->file_name, io_u->offset, io_u->buflen,
637 (unsigned long) (p - io_u->buf));
641 static int verify_header(struct io_u *io_u, struct verify_header *hdr)
646 if (hdr->magic != FIO_HDR_MAGIC)
648 if (hdr->len > io_u->buflen) {
649 log_err("fio: verify header exceeds buffer length (%u > %lu)\n", hdr->len, io_u->buflen);
653 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
654 if (crc == hdr->crc32)
657 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
661 int verify_io_u(struct thread_data *td, struct io_u *io_u)
663 struct verify_header *hdr;
664 unsigned int header_size, hdr_inc, hdr_num = 0;
668 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
670 if (io_u->flags & IO_U_F_TRIMMED) {
671 ret = verify_trimmed_io_u(td, io_u);
675 hdr_inc = get_hdr_inc(td, io_u);
678 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
679 p += hdr_inc, hdr_num++) {
685 unsigned int verify_type;
687 if (ret && td->o.verify_fatal)
690 header_size = __hdr_size(td->o.verify);
691 if (td->o.verify_offset)
692 memswp(p, p + td->o.verify_offset, header_size);
695 if (!verify_header(io_u, hdr)) {
696 log_err("verify: bad magic header %x, wanted %x at "
697 "file %s offset %llu, length %u\n",
698 hdr->magic, FIO_HDR_MAGIC,
699 io_u->file->file_name,
700 io_u->offset + hdr_num * hdr->len, hdr->len);
704 if (td->o.verify != VERIFY_NONE)
705 verify_type = td->o.verify;
707 verify_type = hdr->verify_type;
709 switch (verify_type) {
711 ret = verify_io_u_md5(hdr, &vc);
714 ret = verify_io_u_crc64(hdr, &vc);
717 case VERIFY_CRC32C_INTEL:
718 ret = verify_io_u_crc32c(hdr, &vc);
721 ret = verify_io_u_crc32(hdr, &vc);
724 ret = verify_io_u_crc16(hdr, &vc);
727 ret = verify_io_u_crc7(hdr, &vc);
730 ret = verify_io_u_sha256(hdr, &vc);
733 ret = verify_io_u_sha512(hdr, &vc);
736 ret = verify_io_u_meta(hdr, &vc);
739 ret = verify_io_u_sha1(hdr, &vc);
742 ret = verify_io_u_pattern(hdr, &vc);
745 log_err("Bad verify type %u\n", hdr->verify_type);
749 if (ret && verify_type != hdr->verify_type)
750 log_err("fio: verify type mismatch (%u media, %u given)\n",
751 hdr->verify_type, verify_type);
755 if (ret && td->o.verify_fatal)
761 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
762 struct io_u *io_u, unsigned int header_num)
764 struct vhdr_meta *vh = hdr_priv(hdr);
766 vh->thread = td->thread_number;
768 vh->time_sec = io_u->start_time.tv_sec;
769 vh->time_usec = io_u->start_time.tv_usec;
771 vh->numberio = td->io_issues[DDIR_WRITE];
773 vh->offset = io_u->offset + header_num * td->o.verify_interval;
776 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
778 struct vhdr_sha512 *vh = hdr_priv(hdr);
779 struct fio_sha512_ctx sha512_ctx = {
783 fio_sha512_init(&sha512_ctx);
784 fio_sha512_update(&sha512_ctx, p, len);
787 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
789 struct vhdr_sha256 *vh = hdr_priv(hdr);
790 struct fio_sha256_ctx sha256_ctx = {
794 fio_sha256_init(&sha256_ctx);
795 fio_sha256_update(&sha256_ctx, p, len);
798 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
800 struct vhdr_sha1 *vh = hdr_priv(hdr);
801 struct fio_sha1_ctx sha1_ctx = {
805 fio_sha1_init(&sha1_ctx);
806 fio_sha1_update(&sha1_ctx, p, len);
809 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
811 struct vhdr_crc7 *vh = hdr_priv(hdr);
813 vh->crc7 = fio_crc7(p, len);
816 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
818 struct vhdr_crc16 *vh = hdr_priv(hdr);
820 vh->crc16 = fio_crc16(p, len);
823 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
825 struct vhdr_crc32 *vh = hdr_priv(hdr);
827 vh->crc32 = fio_crc32(p, len);
830 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
832 struct vhdr_crc32 *vh = hdr_priv(hdr);
834 vh->crc32 = fio_crc32c(p, len);
837 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
839 struct vhdr_crc64 *vh = hdr_priv(hdr);
841 vh->crc64 = fio_crc64(p, len);
844 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
846 struct vhdr_md5 *vh = hdr_priv(hdr);
847 struct fio_md5_ctx md5_ctx = {
848 .hash = (uint32_t *) vh->md5_digest,
851 fio_md5_init(&md5_ctx);
852 fio_md5_update(&md5_ctx, p, len);
855 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
856 struct verify_header *hdr, unsigned int header_num,
857 unsigned int header_len)
859 unsigned int data_len;
864 hdr->magic = FIO_HDR_MAGIC;
865 hdr->verify_type = td->o.verify;
866 hdr->len = header_len;
867 hdr->rand_seed = io_u->rand_seed;
868 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
870 data_len = header_len - hdr_size(hdr);
872 data = p + hdr_size(hdr);
873 switch (td->o.verify) {
875 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
877 fill_md5(hdr, data, data_len);
880 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
882 fill_crc64(hdr, data, data_len);
885 case VERIFY_CRC32C_INTEL:
886 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
888 fill_crc32c(hdr, data, data_len);
891 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
893 fill_crc32(hdr, data, data_len);
896 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
898 fill_crc16(hdr, data, data_len);
901 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
903 fill_crc7(hdr, data, data_len);
906 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
908 fill_sha256(hdr, data, data_len);
911 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
913 fill_sha512(hdr, data, data_len);
916 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
918 fill_meta(hdr, td, io_u, header_num);
921 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
923 fill_sha1(hdr, data, data_len);
926 /* nothing to do here */
929 log_err("fio: bad verify type: %d\n", td->o.verify);
932 if (td->o.verify_offset)
933 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
937 * fill body of io_u->buf with random data and add a header with the
940 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
942 if (td->o.verify == VERIFY_NULL)
945 fill_pattern_headers(td, io_u, 0, 0);
948 int get_next_verify(struct thread_data *td, struct io_u *io_u)
950 struct io_piece *ipo = NULL;
953 * this io_u is from a requeue, we already filled the offsets
958 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
959 struct rb_node *n = rb_first(&td->io_hist_tree);
961 ipo = rb_entry(n, struct io_piece, rb_node);
962 rb_erase(n, &td->io_hist_tree);
963 assert(ipo->flags & IP_F_ONRB);
964 ipo->flags &= ~IP_F_ONRB;
965 } else if (!flist_empty(&td->io_hist_list)) {
966 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
967 flist_del(&ipo->list);
968 assert(ipo->flags & IP_F_ONLIST);
969 ipo->flags &= ~IP_F_ONLIST;
975 io_u->offset = ipo->offset;
976 io_u->buflen = ipo->len;
977 io_u->file = ipo->file;
978 io_u->flags |= IO_U_F_VER_LIST;
980 if (ipo->flags & IP_F_TRIMMED)
981 io_u->flags |= IO_U_F_TRIMMED;
983 if (!fio_file_open(io_u->file)) {
984 int r = td_io_open_file(td, io_u->file);
987 dprint(FD_VERIFY, "failed file %s open\n",
988 io_u->file->file_name);
994 assert(fio_file_open(io_u->file));
995 io_u->ddir = DDIR_READ;
996 io_u->xfer_buf = io_u->buf;
997 io_u->xfer_buflen = io_u->buflen;
999 remove_trim_entry(td, ipo);
1001 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1005 dprint(FD_VERIFY, "get_next_verify: empty\n");
1009 void fio_verify_init(struct thread_data *td)
1011 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1012 td->o.verify == VERIFY_CRC32C) {
1013 crc32c_intel_probe();
1017 static void *verify_async_thread(void *data)
1019 struct thread_data *td = data;
1023 if (td->o.verify_cpumask_set &&
1024 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1025 log_err("fio: failed setting verify thread affinity\n");
1033 if (td->verify_thread_exit)
1036 pthread_mutex_lock(&td->io_u_lock);
1038 while (flist_empty(&td->verify_list) &&
1039 !td->verify_thread_exit) {
1040 ret = pthread_cond_wait(&td->verify_cond,
1043 pthread_mutex_unlock(&td->io_u_lock);
1048 flist_splice_init(&td->verify_list, &list);
1049 pthread_mutex_unlock(&td->io_u_lock);
1051 if (flist_empty(&list))
1054 while (!flist_empty(&list)) {
1055 io_u = flist_entry(list.next, struct io_u, verify_list);
1056 flist_del(&io_u->verify_list);
1058 ret = verify_io_u(td, io_u);
1062 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1063 update_error_count(td, ret);
1071 td_verror(td, ret, "async_verify");
1072 if (td->o.verify_fatal)
1077 pthread_mutex_lock(&td->io_u_lock);
1078 td->nr_verify_threads--;
1079 pthread_mutex_unlock(&td->io_u_lock);
1081 pthread_cond_signal(&td->free_cond);
1085 int verify_async_init(struct thread_data *td)
1088 pthread_attr_t attr;
1090 pthread_attr_init(&attr);
1091 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1093 td->verify_thread_exit = 0;
1095 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1096 for (i = 0; i < td->o.verify_async; i++) {
1097 ret = pthread_create(&td->verify_threads[i], &attr,
1098 verify_async_thread, td);
1100 log_err("fio: async verify creation failed: %s\n",
1104 ret = pthread_detach(td->verify_threads[i]);
1106 log_err("fio: async verify thread detach failed: %s\n",
1110 td->nr_verify_threads++;
1113 pthread_attr_destroy(&attr);
1115 if (i != td->o.verify_async) {
1116 log_err("fio: only %d verify threads started, exiting\n", i);
1117 td->verify_thread_exit = 1;
1119 pthread_cond_broadcast(&td->verify_cond);
1126 void verify_async_exit(struct thread_data *td)
1128 td->verify_thread_exit = 1;
1130 pthread_cond_broadcast(&td->verify_cond);
1132 pthread_mutex_lock(&td->io_u_lock);
1134 while (td->nr_verify_threads)
1135 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1137 pthread_mutex_unlock(&td->io_u_lock);
1138 free(td->verify_threads);
1139 td->verify_threads = NULL;