2 * IO verification helpers
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(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);
59 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
60 td->o.verify_pattern_bytes, len);
63 size = td->o.verify_pattern_bytes;
66 memcpy(b+i, td->o.verify_pattern, size);
69 io_u->buf_filled_len = len;
75 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
76 unsigned long seed, int use_seed)
78 unsigned int hdr_inc, header_num;
79 struct verify_header *hdr;
82 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
84 hdr_inc = io_u->buflen;
85 if (td->o.verify_interval)
86 hdr_inc = td->o.verify_interval;
89 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
91 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
96 static void memswp(void *buf1, void *buf2, unsigned int len)
100 assert(len <= sizeof(swap));
102 memcpy(&swap, buf1, len);
103 memcpy(buf1, buf2, len);
104 memcpy(buf2, &swap, len);
107 static void hexdump(void *buffer, int len)
109 unsigned char *p = buffer;
112 for (i = 0; i < len; i++)
113 log_err("%02x", p[i]);
118 * Prepare for seperation of verify_header and checksum header
120 static inline unsigned int __hdr_size(int verify_type)
122 unsigned int len = 0;
124 switch (verify_type) {
130 len = sizeof(struct vhdr_md5);
133 len = sizeof(struct vhdr_crc64);
137 case VERIFY_CRC32C_INTEL:
138 len = sizeof(struct vhdr_crc32);
141 len = sizeof(struct vhdr_crc16);
144 len = sizeof(struct vhdr_crc7);
147 len = sizeof(struct vhdr_sha256);
150 len = sizeof(struct vhdr_sha512);
153 len = sizeof(struct vhdr_meta);
156 len = sizeof(struct vhdr_sha1);
159 log_err("fio: unknown verify header!\n");
163 return len + sizeof(struct verify_header);
166 static inline unsigned int hdr_size(struct verify_header *hdr)
168 return __hdr_size(hdr->verify_type);
171 static void *hdr_priv(struct verify_header *hdr)
175 return priv + sizeof(struct verify_header);
179 * Verify container, pass info to verify handlers and allow them to
180 * pass info back in case of error
187 unsigned int hdr_num;
188 struct thread_data *td;
191 * Output, only valid in case of error
196 unsigned int crc_len;
199 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
200 const char *type, struct fio_file *f)
202 char *ptr, fname[256];
205 ptr = strdup(f->file_name);
206 strcpy(fname, basename(ptr));
208 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
210 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
212 perror("open verify buf file");
217 ret = write(fd, buf, len);
221 perror("write verify buf file");
229 log_err(" %s data dumped as %s\n", type, fname);
234 * Dump the contents of the read block and re-generate the correct data
237 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
239 struct thread_data *td = vc->td;
240 struct io_u *io_u = vc->io_u;
241 unsigned long hdr_offset;
246 * Dump the contents we just read off disk
248 hdr_offset = vc->hdr_num * hdr->len;
250 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
251 "received", vc->io_u->file);
254 * Allocate a new buf and re-generate the original data
256 buf = malloc(io_u->buflen);
259 dummy.rand_seed = hdr->rand_seed;
261 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
263 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
264 "expected", vc->io_u->file);
268 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
270 unsigned long long offset;
272 offset = vc->io_u->offset;
273 offset += vc->hdr_num * hdr->len;
274 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
275 vc->name, vc->io_u->file->file_name, offset, hdr->len);
277 if (vc->good_crc && vc->bad_crc) {
278 log_err(" Expected CRC: ");
279 hexdump(vc->good_crc, vc->crc_len);
280 log_err(" Received CRC: ");
281 hexdump(vc->bad_crc, vc->crc_len);
284 dump_verify_buffers(hdr, vc);
288 * Return data area 'header_num'
290 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
292 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
295 static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
298 struct vhdr_meta *vh = hdr_priv(hdr);
299 struct io_u *io_u = vc->io_u;
301 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
303 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
307 log_verify_failure(hdr, vc);
311 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
313 void *p = io_u_verify_off(hdr, vc);
314 struct vhdr_sha512 *vh = hdr_priv(hdr);
316 struct sha512_ctx sha512_ctx = {
320 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
322 sha512_init(&sha512_ctx);
323 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
325 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
329 vc->good_crc = vh->sha512;
330 vc->bad_crc = sha512_ctx.buf;
331 vc->crc_len = sizeof(vh->sha512);
332 log_verify_failure(hdr, vc);
336 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
338 void *p = io_u_verify_off(hdr, vc);
339 struct vhdr_sha256 *vh = hdr_priv(hdr);
341 struct sha256_ctx sha256_ctx = {
345 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
347 sha256_init(&sha256_ctx);
348 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
350 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
354 vc->good_crc = vh->sha256;
355 vc->bad_crc = sha256_ctx.buf;
356 vc->crc_len = sizeof(vh->sha256);
357 log_verify_failure(hdr, vc);
361 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
363 void *p = io_u_verify_off(hdr, vc);
364 struct vhdr_sha1 *vh = hdr_priv(hdr);
366 struct sha1_ctx sha1_ctx = {
370 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
372 sha1_init(&sha1_ctx);
373 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
375 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
379 vc->good_crc = vh->sha1;
380 vc->bad_crc = sha1_ctx.H;
381 vc->crc_len = sizeof(vh->sha1);
382 log_verify_failure(hdr, vc);
386 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
388 void *p = io_u_verify_off(hdr, vc);
389 struct vhdr_crc7 *vh = hdr_priv(hdr);
392 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
394 c = crc7(p, hdr->len - hdr_size(hdr));
400 vc->good_crc = &vh->crc7;
403 log_verify_failure(hdr, vc);
407 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
409 void *p = io_u_verify_off(hdr, vc);
410 struct vhdr_crc16 *vh = hdr_priv(hdr);
413 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
415 c = crc16(p, hdr->len - hdr_size(hdr));
421 vc->good_crc = &vh->crc16;
424 log_verify_failure(hdr, vc);
428 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
430 void *p = io_u_verify_off(hdr, vc);
431 struct vhdr_crc64 *vh = hdr_priv(hdr);
432 unsigned long long c;
434 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
436 c = crc64(p, hdr->len - hdr_size(hdr));
442 vc->good_crc = &vh->crc64;
445 log_verify_failure(hdr, vc);
449 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
451 void *p = io_u_verify_off(hdr, vc);
452 struct vhdr_crc32 *vh = hdr_priv(hdr);
455 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
457 c = crc32(p, hdr->len - hdr_size(hdr));
463 vc->good_crc = &vh->crc32;
466 log_verify_failure(hdr, vc);
470 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
472 void *p = io_u_verify_off(hdr, vc);
473 struct vhdr_crc32 *vh = hdr_priv(hdr);
476 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
478 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
479 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
481 c = crc32c(p, hdr->len - hdr_size(hdr));
487 vc->good_crc = &vh->crc32;
490 log_verify_failure(hdr, vc);
494 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
496 void *p = io_u_verify_off(hdr, vc);
497 struct vhdr_md5 *vh = hdr_priv(hdr);
498 uint32_t hash[MD5_HASH_WORDS];
499 struct md5_ctx md5_ctx = {
503 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
506 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
508 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
512 vc->good_crc = vh->md5_digest;
513 vc->bad_crc = md5_ctx.hash;
514 vc->crc_len = sizeof(hash);
515 log_verify_failure(hdr, vc);
519 static unsigned int hweight8(unsigned int w)
521 unsigned int res = w - ((w >> 1) & 0x55);
523 res = (res & 0x33) + ((res >> 2) & 0x33);
524 return (res + (res >> 4)) & 0x0F;
527 int verify_io_u_pattern(char *pattern, unsigned long pattern_size,
528 char *buf, unsigned int len, unsigned int mod)
532 for (i = 0; i < len; i++) {
533 if (buf[i] != pattern[mod]) {
536 bits = hweight8(buf[i] ^ pattern[mod]);
537 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
538 buf[i], pattern[mod], bits);
539 log_err("fio: bad pattern block offset %u\n", i);
543 if (mod == pattern_size)
551 * Push IO verification to a separate thread
553 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
556 put_file_log(td, io_u->file);
560 pthread_mutex_lock(&td->io_u_lock);
562 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
564 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
566 flist_del(&io_u->list);
567 flist_add_tail(&io_u->list, &td->verify_list);
568 io_u->flags |= IO_U_F_FREE_DEF;
569 pthread_mutex_unlock(&td->io_u_lock);
571 pthread_cond_signal(&td->verify_cond);
575 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
577 static char zero_buf[1024];
578 unsigned int this_len, len;
582 if (!td->o.trim_zero)
588 this_len = sizeof(zero_buf);
591 if (memcmp(p, zero_buf, this_len)) {
602 log_err("trim: verify failed at file %s offset %llu, length %lu"
603 ", block offset %lu\n",
604 io_u->file->file_name, io_u->offset, io_u->buflen,
605 (unsigned long) (p - io_u->buf));
609 int verify_io_u(struct thread_data *td, struct io_u *io_u)
611 struct verify_header *hdr;
612 unsigned int hdr_size, hdr_inc, hdr_num = 0;
616 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
618 if (io_u->flags & IO_U_F_TRIMMED) {
619 ret = verify_trimmed_io_u(td, io_u);
623 hdr_inc = io_u->buflen;
624 if (td->o.verify_interval)
625 hdr_inc = td->o.verify_interval;
628 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
629 p += hdr_inc, hdr_num++) {
636 if (ret && td->o.verify_fatal)
639 hdr_size = __hdr_size(td->o.verify);
640 if (td->o.verify_offset)
641 memswp(p, p + td->o.verify_offset, hdr_size);
644 if (hdr->fio_magic != FIO_HDR_MAGIC) {
645 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
646 hdr->fio_magic, FIO_HDR_MAGIC,
647 io_u->file->file_name,
648 io_u->offset + hdr_num * hdr->len, hdr->len);
652 if (td->o.verify_pattern_bytes) {
653 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
655 ret = verify_io_u_pattern(td->o.verify_pattern,
656 td->o.verify_pattern_bytes,
659 hdr_size % td->o.verify_pattern_bytes);
662 log_err("pattern: verify failed at file %s offset %llu, length %u\n",
663 io_u->file->file_name,
664 io_u->offset + hdr_num * hdr->len,
669 * Also verify the meta data, if applicable
671 if (hdr->verify_type == VERIFY_META)
672 ret |= verify_io_u_meta(hdr, td, &vc);
676 switch (hdr->verify_type) {
678 ret = verify_io_u_md5(hdr, &vc);
681 ret = verify_io_u_crc64(hdr, &vc);
684 case VERIFY_CRC32C_INTEL:
685 ret = verify_io_u_crc32c(hdr, &vc);
688 ret = verify_io_u_crc32(hdr, &vc);
691 ret = verify_io_u_crc16(hdr, &vc);
694 ret = verify_io_u_crc7(hdr, &vc);
697 ret = verify_io_u_sha256(hdr, &vc);
700 ret = verify_io_u_sha512(hdr, &vc);
703 ret = verify_io_u_meta(hdr, td, &vc);
706 ret = verify_io_u_sha1(hdr, &vc);
709 log_err("Bad verify type %u\n", hdr->verify_type);
715 if (ret && td->o.verify_fatal)
721 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
722 struct io_u *io_u, unsigned int header_num)
724 struct vhdr_meta *vh = hdr_priv(hdr);
726 vh->thread = td->thread_number;
728 vh->time_sec = io_u->start_time.tv_sec;
729 vh->time_usec = io_u->start_time.tv_usec;
731 vh->numberio = td->io_issues[DDIR_WRITE];
733 vh->offset = io_u->offset + header_num * td->o.verify_interval;
736 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
738 struct vhdr_sha512 *vh = hdr_priv(hdr);
739 struct sha512_ctx sha512_ctx = {
743 sha512_init(&sha512_ctx);
744 sha512_update(&sha512_ctx, p, len);
747 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
749 struct vhdr_sha256 *vh = hdr_priv(hdr);
750 struct sha256_ctx sha256_ctx = {
754 sha256_init(&sha256_ctx);
755 sha256_update(&sha256_ctx, p, len);
758 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
760 struct vhdr_sha1 *vh = hdr_priv(hdr);
761 struct sha1_ctx sha1_ctx = {
765 sha1_init(&sha1_ctx);
766 sha1_update(&sha1_ctx, p, len);
769 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
771 struct vhdr_crc7 *vh = hdr_priv(hdr);
773 vh->crc7 = crc7(p, len);
776 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
778 struct vhdr_crc16 *vh = hdr_priv(hdr);
780 vh->crc16 = crc16(p, len);
783 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
785 struct vhdr_crc32 *vh = hdr_priv(hdr);
787 vh->crc32 = crc32(p, len);
790 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
792 struct vhdr_crc32 *vh = hdr_priv(hdr);
794 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
795 vh->crc32 = crc32c_intel(p, len);
797 vh->crc32 = crc32c(p, len);
800 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
802 struct vhdr_crc64 *vh = hdr_priv(hdr);
804 vh->crc64 = crc64(p, len);
807 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
809 struct vhdr_md5 *vh = hdr_priv(hdr);
810 struct md5_ctx md5_ctx = {
811 .hash = (uint32_t *) vh->md5_digest,
815 md5_update(&md5_ctx, p, len);
818 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
819 struct verify_header *hdr, unsigned int header_num,
820 unsigned int header_len)
822 unsigned int data_len;
827 hdr->fio_magic = FIO_HDR_MAGIC;
828 hdr->len = header_len;
829 hdr->verify_type = td->o.verify;
830 hdr->rand_seed = io_u->rand_seed;
831 data_len = header_len - hdr_size(hdr);
833 data = p + hdr_size(hdr);
834 switch (td->o.verify) {
836 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
838 fill_md5(hdr, data, data_len);
841 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
843 fill_crc64(hdr, data, data_len);
846 case VERIFY_CRC32C_INTEL:
847 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
849 fill_crc32c(hdr, data, data_len);
852 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
854 fill_crc32(hdr, data, data_len);
857 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
859 fill_crc16(hdr, data, data_len);
862 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
864 fill_crc7(hdr, data, data_len);
867 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
869 fill_sha256(hdr, data, data_len);
872 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
874 fill_sha512(hdr, data, data_len);
877 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
879 fill_meta(hdr, td, io_u, header_num);
882 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
884 fill_sha1(hdr, data, data_len);
887 log_err("fio: bad verify type: %d\n", td->o.verify);
890 if (td->o.verify_offset)
891 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
895 * fill body of io_u->buf with random data and add a header with the
898 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
900 if (td->o.verify == VERIFY_NULL)
903 fill_pattern_headers(td, io_u, 0, 0);
906 int get_next_verify(struct thread_data *td, struct io_u *io_u)
908 struct io_piece *ipo = NULL;
911 * this io_u is from a requeue, we already filled the offsets
916 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
917 struct rb_node *n = rb_first(&td->io_hist_tree);
919 ipo = rb_entry(n, struct io_piece, rb_node);
920 rb_erase(n, &td->io_hist_tree);
921 assert(ipo->flags & IP_F_ONRB);
922 ipo->flags &= ~IP_F_ONRB;
923 } else if (!flist_empty(&td->io_hist_list)) {
924 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
925 flist_del(&ipo->list);
926 assert(ipo->flags & IP_F_ONLIST);
927 ipo->flags &= ~IP_F_ONLIST;
933 io_u->offset = ipo->offset;
934 io_u->buflen = ipo->len;
935 io_u->file = ipo->file;
937 if (ipo->flags & IP_F_TRIMMED)
938 io_u->flags |= IO_U_F_TRIMMED;
940 if (!fio_file_open(io_u->file)) {
941 int r = td_io_open_file(td, io_u->file);
944 dprint(FD_VERIFY, "failed file %s open\n",
945 io_u->file->file_name);
951 assert(fio_file_open(io_u->file));
952 io_u->ddir = DDIR_READ;
953 io_u->xfer_buf = io_u->buf;
954 io_u->xfer_buflen = io_u->buflen;
956 remove_trim_entry(td, ipo);
958 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
962 dprint(FD_VERIFY, "get_next_verify: empty\n");
966 static void *verify_async_thread(void *data)
968 struct thread_data *td = data;
972 if (td->o.verify_cpumask_set &&
973 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
974 log_err("fio: failed setting verify thread affinity\n");
982 if (td->verify_thread_exit)
985 pthread_mutex_lock(&td->io_u_lock);
987 while (flist_empty(&td->verify_list) &&
988 !td->verify_thread_exit) {
989 ret = pthread_cond_wait(&td->verify_cond,
992 pthread_mutex_unlock(&td->io_u_lock);
997 flist_splice_init(&td->verify_list, &list);
998 pthread_mutex_unlock(&td->io_u_lock);
1000 if (flist_empty(&list))
1003 while (!flist_empty(&list)) {
1004 io_u = flist_entry(list.next, struct io_u, list);
1005 flist_del_init(&io_u->list);
1007 ret = verify_io_u(td, io_u);
1011 if (td->o.continue_on_error &&
1012 td_non_fatal_error(ret)) {
1013 update_error_count(td, ret);
1021 td_verror(td, ret, "async_verify");
1022 if (td->o.verify_fatal)
1027 pthread_mutex_lock(&td->io_u_lock);
1028 td->nr_verify_threads--;
1029 pthread_mutex_unlock(&td->io_u_lock);
1031 pthread_cond_signal(&td->free_cond);
1035 int verify_async_init(struct thread_data *td)
1038 pthread_attr_t attr;
1040 pthread_attr_init(&attr);
1041 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1043 td->verify_thread_exit = 0;
1045 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1046 for (i = 0; i < td->o.verify_async; i++) {
1047 ret = pthread_create(&td->verify_threads[i], &attr,
1048 verify_async_thread, td);
1050 log_err("fio: async verify creation failed: %s\n",
1054 ret = pthread_detach(td->verify_threads[i]);
1056 log_err("fio: async verify thread detach failed: %s\n",
1060 td->nr_verify_threads++;
1063 pthread_attr_destroy(&attr);
1065 if (i != td->o.verify_async) {
1066 log_err("fio: only %d verify threads started, exiting\n", i);
1067 td->verify_thread_exit = 1;
1069 pthread_cond_broadcast(&td->verify_cond);
1076 void verify_async_exit(struct thread_data *td)
1078 td->verify_thread_exit = 1;
1080 pthread_cond_broadcast(&td->verify_cond);
1082 pthread_mutex_lock(&td->io_u_lock);
1084 while (td->nr_verify_threads)
1085 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1087 pthread_mutex_unlock(&td->io_u_lock);
1088 free(td->verify_threads);
1089 td->verify_threads = NULL;