2 * IO verification helpers
17 #include "crc/crc64.h"
18 #include "crc/crc32.h"
19 #include "crc/crc32c.h"
20 #include "crc/crc16.h"
22 #include "crc/sha256.h"
23 #include "crc/sha512.h"
26 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
27 struct verify_header *hdr, unsigned int header_num,
28 unsigned int header_len);
30 void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)
32 switch (td->o.verify_pattern_bytes) {
34 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
36 __fill_random_buf(p, len, seed);
38 io_u->rand_seed = fill_random_buf(p, len);
41 if (io_u->buf_filled_len >= len) {
42 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
45 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
46 memset(p, td->o.verify_pattern[0], len);
47 io_u->buf_filled_len = len;
50 unsigned int i = 0, size = 0;
53 if (io_u->buf_filled_len >= len) {
54 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
55 td->o.verify_pattern_bytes, len);
58 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
59 td->o.verify_pattern_bytes, len);
62 size = td->o.verify_pattern_bytes;
65 memcpy(b+i, td->o.verify_pattern, size);
68 io_u->buf_filled_len = len;
74 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
75 unsigned long seed, int use_seed)
77 unsigned int hdr_inc, header_num;
78 struct verify_header *hdr;
81 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
83 hdr_inc = io_u->buflen;
84 if (td->o.verify_interval)
85 hdr_inc = td->o.verify_interval;
88 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
90 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
95 static void memswp(void *buf1, void *buf2, unsigned int len)
99 assert(len <= sizeof(swap));
101 memcpy(&swap, buf1, len);
102 memcpy(buf1, buf2, len);
103 memcpy(buf2, &swap, len);
106 static void hexdump(void *buffer, int len)
108 unsigned char *p = buffer;
111 for (i = 0; i < len; i++)
112 log_err("%02x", p[i]);
117 * Prepare for seperation of verify_header and checksum header
119 static inline unsigned int __hdr_size(int verify_type)
121 unsigned int len = 0;
123 switch (verify_type) {
129 len = sizeof(struct vhdr_md5);
132 len = sizeof(struct vhdr_crc64);
136 case VERIFY_CRC32C_INTEL:
137 len = sizeof(struct vhdr_crc32);
140 len = sizeof(struct vhdr_crc16);
143 len = sizeof(struct vhdr_crc7);
146 len = sizeof(struct vhdr_sha256);
149 len = sizeof(struct vhdr_sha512);
152 len = sizeof(struct vhdr_meta);
155 len = sizeof(struct vhdr_sha1);
158 log_err("fio: unknown verify header!\n");
162 return len + sizeof(struct verify_header);
165 static inline unsigned int hdr_size(struct verify_header *hdr)
167 return __hdr_size(hdr->verify_type);
170 static void *hdr_priv(struct verify_header *hdr)
174 return priv + sizeof(struct verify_header);
178 * Verify container, pass info to verify handlers and allow them to
179 * pass info back in case of error
186 unsigned int hdr_num;
187 struct thread_data *td;
190 * Output, only valid in case of error
195 unsigned int crc_len;
198 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
199 const char *type, struct fio_file *f)
204 strcpy(fname, f->file_name);
207 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
209 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
211 perror("open verify buf file");
216 ret = write(fd, buf, len);
220 perror("write verify buf file");
228 log_err(" %s data dumped as %s\n", type, fname);
232 * Dump the contents of the read block and re-generate the correct data
235 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
237 struct thread_data *td = vc->td;
238 struct io_u *io_u = vc->io_u;
239 unsigned long hdr_offset;
244 * Dump the contents we just read off disk
246 hdr_offset = vc->hdr_num * hdr->len;
248 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
249 "received", vc->io_u->file);
252 * Allocate a new buf and re-generate the original data
254 buf = malloc(io_u->buflen);
257 dummy.rand_seed = hdr->rand_seed;
259 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
261 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
262 "expected", vc->io_u->file);
266 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
268 unsigned long long offset;
270 offset = vc->io_u->offset;
271 offset += vc->hdr_num * hdr->len;
272 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
273 vc->name, vc->io_u->file->file_name, offset, hdr->len);
275 if (vc->good_crc && vc->bad_crc) {
276 log_err(" Expected CRC: ");
277 hexdump(vc->good_crc, vc->crc_len);
278 log_err(" Received CRC: ");
279 hexdump(vc->bad_crc, vc->crc_len);
282 dump_verify_buffers(hdr, vc);
286 * Return data area 'header_num'
288 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
290 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
293 static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
296 struct vhdr_meta *vh = hdr_priv(hdr);
297 struct io_u *io_u = vc->io_u;
299 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
301 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
305 log_verify_failure(hdr, vc);
309 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
311 void *p = io_u_verify_off(hdr, vc);
312 struct vhdr_sha512 *vh = hdr_priv(hdr);
314 struct sha512_ctx sha512_ctx = {
318 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
320 sha512_init(&sha512_ctx);
321 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
323 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
327 vc->good_crc = vh->sha512;
328 vc->bad_crc = sha512_ctx.buf;
329 vc->crc_len = sizeof(vh->sha512);
330 log_verify_failure(hdr, vc);
334 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
336 void *p = io_u_verify_off(hdr, vc);
337 struct vhdr_sha256 *vh = hdr_priv(hdr);
339 struct sha256_ctx sha256_ctx = {
343 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
345 sha256_init(&sha256_ctx);
346 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
348 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
352 vc->good_crc = vh->sha256;
353 vc->bad_crc = sha256_ctx.buf;
354 vc->crc_len = sizeof(vh->sha256);
355 log_verify_failure(hdr, vc);
359 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
361 void *p = io_u_verify_off(hdr, vc);
362 struct vhdr_sha1 *vh = hdr_priv(hdr);
364 struct sha1_ctx sha1_ctx = {
368 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
370 sha1_init(&sha1_ctx);
371 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
373 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
377 vc->good_crc = vh->sha1;
378 vc->bad_crc = sha1_ctx.H;
379 vc->crc_len = sizeof(vh->sha1);
380 log_verify_failure(hdr, vc);
384 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
386 void *p = io_u_verify_off(hdr, vc);
387 struct vhdr_crc7 *vh = hdr_priv(hdr);
390 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
392 c = crc7(p, hdr->len - hdr_size(hdr));
398 vc->good_crc = &vh->crc7;
401 log_verify_failure(hdr, vc);
405 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
407 void *p = io_u_verify_off(hdr, vc);
408 struct vhdr_crc16 *vh = hdr_priv(hdr);
411 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
413 c = crc16(p, hdr->len - hdr_size(hdr));
419 vc->good_crc = &vh->crc16;
422 log_verify_failure(hdr, vc);
426 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
428 void *p = io_u_verify_off(hdr, vc);
429 struct vhdr_crc64 *vh = hdr_priv(hdr);
430 unsigned long long c;
432 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
434 c = crc64(p, hdr->len - hdr_size(hdr));
440 vc->good_crc = &vh->crc64;
443 log_verify_failure(hdr, vc);
447 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
449 void *p = io_u_verify_off(hdr, vc);
450 struct vhdr_crc32 *vh = hdr_priv(hdr);
453 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
455 c = crc32(p, hdr->len - hdr_size(hdr));
461 vc->good_crc = &vh->crc32;
464 log_verify_failure(hdr, vc);
468 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
470 void *p = io_u_verify_off(hdr, vc);
471 struct vhdr_crc32 *vh = hdr_priv(hdr);
474 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
476 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
477 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
479 c = crc32c(p, hdr->len - hdr_size(hdr));
485 vc->good_crc = &vh->crc32;
488 log_verify_failure(hdr, vc);
492 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
494 void *p = io_u_verify_off(hdr, vc);
495 struct vhdr_md5 *vh = hdr_priv(hdr);
496 uint32_t hash[MD5_HASH_WORDS];
497 struct md5_ctx md5_ctx = {
501 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
504 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
506 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
510 vc->good_crc = vh->md5_digest;
511 vc->bad_crc = md5_ctx.hash;
512 vc->crc_len = sizeof(hash);
513 log_verify_failure(hdr, vc);
517 static unsigned int hweight8(unsigned int w)
519 unsigned int res = w - ((w >> 1) & 0x55);
521 res = (res & 0x33) + ((res >> 2) & 0x33);
522 return (res + (res >> 4)) & 0x0F;
525 int verify_io_u_pattern(char *pattern, unsigned long pattern_size,
526 char *buf, unsigned int len, unsigned int mod)
530 for (i = 0; i < len; i++) {
531 if (buf[i] != pattern[mod]) {
534 bits = hweight8(buf[i] ^ pattern[mod]);
535 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
536 buf[i], pattern[mod], bits);
537 log_err("fio: bad pattern block offset %u\n", i);
541 if (mod == pattern_size)
549 * Push IO verification to a separate thread
551 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
554 put_file_log(td, io_u->file);
558 pthread_mutex_lock(&td->io_u_lock);
560 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
562 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
564 flist_del(&io_u->list);
565 flist_add_tail(&io_u->list, &td->verify_list);
566 io_u->flags |= IO_U_F_FREE_DEF;
567 pthread_mutex_unlock(&td->io_u_lock);
569 pthread_cond_signal(&td->verify_cond);
573 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
575 static char zero_buf[1024];
576 unsigned int this_len, len;
580 if (!td->o.trim_zero)
586 this_len = sizeof(zero_buf);
589 if (memcmp(p, zero_buf, this_len)) {
600 log_err("trim: verify failed at file %s offset %llu, length %lu"
601 ", block offset %lu\n",
602 io_u->file->file_name, io_u->offset, io_u->buflen,
603 (unsigned long) (p - io_u->buf));
607 int verify_io_u(struct thread_data *td, struct io_u *io_u)
609 struct verify_header *hdr;
610 unsigned int hdr_size, hdr_inc, hdr_num = 0;
614 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
616 if (io_u->flags & IO_U_F_TRIMMED) {
617 ret = verify_trimmed_io_u(td, io_u);
621 hdr_inc = io_u->buflen;
622 if (td->o.verify_interval)
623 hdr_inc = td->o.verify_interval;
626 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
627 p += hdr_inc, hdr_num++) {
634 if (ret && td->o.verify_fatal)
637 hdr_size = __hdr_size(td->o.verify);
638 if (td->o.verify_offset)
639 memswp(p, p + td->o.verify_offset, hdr_size);
642 if (hdr->fio_magic != FIO_HDR_MAGIC) {
643 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
644 hdr->fio_magic, FIO_HDR_MAGIC,
645 io_u->file->file_name,
646 io_u->offset + hdr_num * hdr->len, hdr->len);
650 if (td->o.verify_pattern_bytes) {
651 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
653 ret = verify_io_u_pattern(td->o.verify_pattern,
654 td->o.verify_pattern_bytes,
657 hdr_size % td->o.verify_pattern_bytes);
660 log_err("pattern: verify failed at file %s offset %llu, length %u\n",
661 io_u->file->file_name,
662 io_u->offset + hdr_num * hdr->len,
667 * Also verify the meta data, if applicable
669 if (hdr->verify_type == VERIFY_META)
670 ret |= verify_io_u_meta(hdr, td, &vc);
674 switch (hdr->verify_type) {
676 ret = verify_io_u_md5(hdr, &vc);
679 ret = verify_io_u_crc64(hdr, &vc);
682 case VERIFY_CRC32C_INTEL:
683 ret = verify_io_u_crc32c(hdr, &vc);
686 ret = verify_io_u_crc32(hdr, &vc);
689 ret = verify_io_u_crc16(hdr, &vc);
692 ret = verify_io_u_crc7(hdr, &vc);
695 ret = verify_io_u_sha256(hdr, &vc);
698 ret = verify_io_u_sha512(hdr, &vc);
701 ret = verify_io_u_meta(hdr, td, &vc);
704 ret = verify_io_u_sha1(hdr, &vc);
707 log_err("Bad verify type %u\n", hdr->verify_type);
713 if (ret && td->o.verify_fatal)
719 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
720 struct io_u *io_u, unsigned int header_num)
722 struct vhdr_meta *vh = hdr_priv(hdr);
724 vh->thread = td->thread_number;
726 vh->time_sec = io_u->start_time.tv_sec;
727 vh->time_usec = io_u->start_time.tv_usec;
729 vh->numberio = td->io_issues[DDIR_WRITE];
731 vh->offset = io_u->offset + header_num * td->o.verify_interval;
734 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
736 struct vhdr_sha512 *vh = hdr_priv(hdr);
737 struct sha512_ctx sha512_ctx = {
741 sha512_init(&sha512_ctx);
742 sha512_update(&sha512_ctx, p, len);
745 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
747 struct vhdr_sha256 *vh = hdr_priv(hdr);
748 struct sha256_ctx sha256_ctx = {
752 sha256_init(&sha256_ctx);
753 sha256_update(&sha256_ctx, p, len);
756 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
758 struct vhdr_sha1 *vh = hdr_priv(hdr);
759 struct sha1_ctx sha1_ctx = {
763 sha1_init(&sha1_ctx);
764 sha1_update(&sha1_ctx, p, len);
767 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
769 struct vhdr_crc7 *vh = hdr_priv(hdr);
771 vh->crc7 = crc7(p, len);
774 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
776 struct vhdr_crc16 *vh = hdr_priv(hdr);
778 vh->crc16 = crc16(p, len);
781 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
783 struct vhdr_crc32 *vh = hdr_priv(hdr);
785 vh->crc32 = crc32(p, len);
788 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
790 struct vhdr_crc32 *vh = hdr_priv(hdr);
792 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
793 vh->crc32 = crc32c_intel(p, len);
795 vh->crc32 = crc32c(p, len);
798 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
800 struct vhdr_crc64 *vh = hdr_priv(hdr);
802 vh->crc64 = crc64(p, len);
805 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
807 struct vhdr_md5 *vh = hdr_priv(hdr);
808 struct md5_ctx md5_ctx = {
809 .hash = (uint32_t *) vh->md5_digest,
813 md5_update(&md5_ctx, p, len);
816 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
817 struct verify_header *hdr, unsigned int header_num,
818 unsigned int header_len)
820 unsigned int data_len;
825 hdr->fio_magic = FIO_HDR_MAGIC;
826 hdr->len = header_len;
827 hdr->verify_type = td->o.verify;
828 hdr->rand_seed = io_u->rand_seed;
829 data_len = header_len - hdr_size(hdr);
831 data = p + hdr_size(hdr);
832 switch (td->o.verify) {
834 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
836 fill_md5(hdr, data, data_len);
839 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
841 fill_crc64(hdr, data, data_len);
844 case VERIFY_CRC32C_INTEL:
845 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
847 fill_crc32c(hdr, data, data_len);
850 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
852 fill_crc32(hdr, data, data_len);
855 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
857 fill_crc16(hdr, data, data_len);
860 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
862 fill_crc7(hdr, data, data_len);
865 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
867 fill_sha256(hdr, data, data_len);
870 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
872 fill_sha512(hdr, data, data_len);
875 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
877 fill_meta(hdr, td, io_u, header_num);
880 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
882 fill_sha1(hdr, data, data_len);
885 log_err("fio: bad verify type: %d\n", td->o.verify);
888 if (td->o.verify_offset)
889 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
893 * fill body of io_u->buf with random data and add a header with the
896 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
898 if (td->o.verify == VERIFY_NULL)
901 fill_pattern_headers(td, io_u, 0, 0);
904 int get_next_verify(struct thread_data *td, struct io_u *io_u)
906 struct io_piece *ipo = NULL;
909 * this io_u is from a requeue, we already filled the offsets
914 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
915 struct rb_node *n = rb_first(&td->io_hist_tree);
917 ipo = rb_entry(n, struct io_piece, rb_node);
918 rb_erase(n, &td->io_hist_tree);
919 assert(ipo->flags & IP_F_ONRB);
920 ipo->flags &= ~IP_F_ONRB;
921 } else if (!flist_empty(&td->io_hist_list)) {
922 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
923 flist_del(&ipo->list);
924 assert(ipo->flags & IP_F_ONLIST);
925 ipo->flags &= ~IP_F_ONLIST;
931 io_u->offset = ipo->offset;
932 io_u->buflen = ipo->len;
933 io_u->file = ipo->file;
935 if (ipo->flags & IP_F_TRIMMED)
936 io_u->flags |= IO_U_F_TRIMMED;
938 if (!fio_file_open(io_u->file)) {
939 int r = td_io_open_file(td, io_u->file);
942 dprint(FD_VERIFY, "failed file %s open\n",
943 io_u->file->file_name);
949 assert(fio_file_open(io_u->file));
950 io_u->ddir = DDIR_READ;
951 io_u->xfer_buf = io_u->buf;
952 io_u->xfer_buflen = io_u->buflen;
954 remove_trim_entry(td, ipo);
956 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
960 dprint(FD_VERIFY, "get_next_verify: empty\n");
964 static void *verify_async_thread(void *data)
966 struct thread_data *td = data;
970 if (td->o.verify_cpumask_set &&
971 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
972 log_err("fio: failed setting verify thread affinity\n");
980 if (td->verify_thread_exit)
983 pthread_mutex_lock(&td->io_u_lock);
985 while (flist_empty(&td->verify_list) &&
986 !td->verify_thread_exit) {
987 ret = pthread_cond_wait(&td->verify_cond,
990 pthread_mutex_unlock(&td->io_u_lock);
995 flist_splice_init(&td->verify_list, &list);
996 pthread_mutex_unlock(&td->io_u_lock);
998 if (flist_empty(&list))
1001 while (!flist_empty(&list)) {
1002 io_u = flist_entry(list.next, struct io_u, list);
1003 flist_del_init(&io_u->list);
1005 ret = verify_io_u(td, io_u);
1009 if (td->o.continue_on_error &&
1010 td_non_fatal_error(ret)) {
1011 update_error_count(td, ret);
1019 td_verror(td, ret, "async_verify");
1020 if (td->o.verify_fatal)
1025 pthread_mutex_lock(&td->io_u_lock);
1026 td->nr_verify_threads--;
1027 pthread_mutex_unlock(&td->io_u_lock);
1029 pthread_cond_signal(&td->free_cond);
1033 int verify_async_init(struct thread_data *td)
1036 pthread_attr_t attr;
1038 pthread_attr_init(&attr);
1039 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1041 td->verify_thread_exit = 0;
1043 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1044 for (i = 0; i < td->o.verify_async; i++) {
1045 ret = pthread_create(&td->verify_threads[i], &attr,
1046 verify_async_thread, td);
1048 log_err("fio: async verify creation failed: %s\n",
1052 ret = pthread_detach(td->verify_threads[i]);
1054 log_err("fio: async verify thread detach failed: %s\n",
1058 td->nr_verify_threads++;
1061 pthread_attr_destroy(&attr);
1063 if (i != td->o.verify_async) {
1064 log_err("fio: only %d verify threads started, exiting\n", i);
1065 td->verify_thread_exit = 1;
1067 pthread_cond_broadcast(&td->verify_cond);
1074 void verify_async_exit(struct thread_data *td)
1076 td->verify_thread_exit = 1;
1078 pthread_cond_broadcast(&td->verify_cond);
1080 pthread_mutex_lock(&td->io_u_lock);
1082 while (td->nr_verify_threads)
1083 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1085 pthread_mutex_unlock(&td->io_u_lock);
1086 free(td->verify_threads);
1087 td->verify_threads = NULL;