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);
258 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
260 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
261 "expected", vc->io_u->file);
265 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
267 unsigned long long offset;
269 offset = vc->io_u->offset;
270 offset += vc->hdr_num * hdr->len;
271 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
272 vc->name, vc->io_u->file->file_name, offset, hdr->len);
274 if (vc->good_crc && vc->bad_crc) {
275 log_err(" Expected CRC: ");
276 hexdump(vc->good_crc, vc->crc_len);
277 log_err(" Received CRC: ");
278 hexdump(vc->bad_crc, vc->crc_len);
281 dump_verify_buffers(hdr, vc);
285 * Return data area 'header_num'
287 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
289 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
292 static int verify_io_u_meta(struct verify_header *hdr, struct thread_data *td,
295 struct vhdr_meta *vh = hdr_priv(hdr);
296 struct io_u *io_u = vc->io_u;
298 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
300 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
304 log_verify_failure(hdr, vc);
308 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
310 void *p = io_u_verify_off(hdr, vc);
311 struct vhdr_sha512 *vh = hdr_priv(hdr);
313 struct sha512_ctx sha512_ctx = {
317 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
319 sha512_init(&sha512_ctx);
320 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
322 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
326 vc->good_crc = vh->sha512;
327 vc->bad_crc = sha512_ctx.buf;
328 vc->crc_len = sizeof(vh->sha512);
329 log_verify_failure(hdr, vc);
333 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
335 void *p = io_u_verify_off(hdr, vc);
336 struct vhdr_sha256 *vh = hdr_priv(hdr);
338 struct sha256_ctx sha256_ctx = {
342 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
344 sha256_init(&sha256_ctx);
345 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
347 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
351 vc->good_crc = vh->sha256;
352 vc->bad_crc = sha256_ctx.buf;
353 vc->crc_len = sizeof(vh->sha256);
354 log_verify_failure(hdr, vc);
358 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
360 void *p = io_u_verify_off(hdr, vc);
361 struct vhdr_sha1 *vh = hdr_priv(hdr);
363 struct sha1_ctx sha1_ctx = {
367 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
369 sha1_init(&sha1_ctx);
370 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
372 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
376 vc->good_crc = vh->sha1;
377 vc->bad_crc = sha1_ctx.H;
378 vc->crc_len = sizeof(vh->sha1);
379 log_verify_failure(hdr, vc);
383 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
385 void *p = io_u_verify_off(hdr, vc);
386 struct vhdr_crc7 *vh = hdr_priv(hdr);
389 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
391 c = crc7(p, hdr->len - hdr_size(hdr));
397 vc->good_crc = &vh->crc7;
400 log_verify_failure(hdr, vc);
404 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
406 void *p = io_u_verify_off(hdr, vc);
407 struct vhdr_crc16 *vh = hdr_priv(hdr);
410 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
412 c = crc16(p, hdr->len - hdr_size(hdr));
418 vc->good_crc = &vh->crc16;
421 log_verify_failure(hdr, vc);
425 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
427 void *p = io_u_verify_off(hdr, vc);
428 struct vhdr_crc64 *vh = hdr_priv(hdr);
429 unsigned long long c;
431 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
433 c = crc64(p, hdr->len - hdr_size(hdr));
439 vc->good_crc = &vh->crc64;
442 log_verify_failure(hdr, vc);
446 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
448 void *p = io_u_verify_off(hdr, vc);
449 struct vhdr_crc32 *vh = hdr_priv(hdr);
452 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
454 c = crc32(p, hdr->len - hdr_size(hdr));
460 vc->good_crc = &vh->crc32;
463 log_verify_failure(hdr, vc);
467 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
469 void *p = io_u_verify_off(hdr, vc);
470 struct vhdr_crc32 *vh = hdr_priv(hdr);
473 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
475 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
476 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
478 c = crc32c(p, hdr->len - hdr_size(hdr));
484 vc->good_crc = &vh->crc32;
487 log_verify_failure(hdr, vc);
491 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
493 void *p = io_u_verify_off(hdr, vc);
494 struct vhdr_md5 *vh = hdr_priv(hdr);
495 uint32_t hash[MD5_HASH_WORDS];
496 struct md5_ctx md5_ctx = {
500 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
503 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
505 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
509 vc->good_crc = vh->md5_digest;
510 vc->bad_crc = md5_ctx.hash;
511 vc->crc_len = sizeof(hash);
512 log_verify_failure(hdr, vc);
516 static unsigned int hweight8(unsigned int w)
518 unsigned int res = w - ((w >> 1) & 0x55);
520 res = (res & 0x33) + ((res >> 2) & 0x33);
521 return (res + (res >> 4)) & 0x0F;
524 int verify_io_u_pattern(char *pattern, unsigned long pattern_size,
525 char *buf, unsigned int len, unsigned int mod)
529 for (i = 0; i < len; i++) {
530 if (buf[i] != pattern[mod]) {
533 bits = hweight8(buf[i] ^ pattern[mod]);
534 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
535 buf[i], pattern[mod], bits);
536 log_err("fio: bad pattern block offset %u\n", i);
540 if (mod == pattern_size)
548 * Push IO verification to a separate thread
550 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
553 put_file_log(td, io_u->file);
557 pthread_mutex_lock(&td->io_u_lock);
559 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
561 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
563 flist_del(&io_u->list);
564 flist_add_tail(&io_u->list, &td->verify_list);
565 io_u->flags |= IO_U_F_FREE_DEF;
566 pthread_mutex_unlock(&td->io_u_lock);
568 pthread_cond_signal(&td->verify_cond);
572 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
574 static char zero_buf[1024];
575 unsigned int this_len, len;
579 if (!td->o.trim_zero)
585 this_len = sizeof(zero_buf);
588 if (memcmp(p, zero_buf, this_len)) {
599 log_err("trim: verify failed at file %s offset %llu, length %lu"
600 ", block offset %lu\n",
601 io_u->file->file_name, io_u->offset, io_u->buflen,
602 (unsigned long) (p - io_u->buf));
606 int verify_io_u(struct thread_data *td, struct io_u *io_u)
608 struct verify_header *hdr;
609 unsigned int hdr_size, hdr_inc, hdr_num = 0;
613 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
615 if (io_u->flags & IO_U_F_TRIMMED) {
616 ret = verify_trimmed_io_u(td, io_u);
620 hdr_inc = io_u->buflen;
621 if (td->o.verify_interval)
622 hdr_inc = td->o.verify_interval;
625 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
626 p += hdr_inc, hdr_num++) {
633 if (ret && td->o.verify_fatal)
636 hdr_size = __hdr_size(td->o.verify);
637 if (td->o.verify_offset)
638 memswp(p, p + td->o.verify_offset, hdr_size);
641 if (hdr->fio_magic != FIO_HDR_MAGIC) {
642 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
643 hdr->fio_magic, FIO_HDR_MAGIC,
644 io_u->file->file_name,
645 io_u->offset + hdr_num * hdr->len, hdr->len);
649 if (td->o.verify_pattern_bytes) {
650 dprint(FD_VERIFY, "pattern verify io_u %p, len %u\n",
652 ret = verify_io_u_pattern(td->o.verify_pattern,
653 td->o.verify_pattern_bytes,
656 hdr_size % td->o.verify_pattern_bytes);
659 log_err("pattern: verify failed at file %s offset %llu, length %u\n",
660 io_u->file->file_name,
661 io_u->offset + hdr_num * hdr->len,
666 * Also verify the meta data, if applicable
668 if (hdr->verify_type == VERIFY_META)
669 ret |= verify_io_u_meta(hdr, td, &vc);
673 switch (hdr->verify_type) {
675 ret = verify_io_u_md5(hdr, &vc);
678 ret = verify_io_u_crc64(hdr, &vc);
681 case VERIFY_CRC32C_INTEL:
682 ret = verify_io_u_crc32c(hdr, &vc);
685 ret = verify_io_u_crc32(hdr, &vc);
688 ret = verify_io_u_crc16(hdr, &vc);
691 ret = verify_io_u_crc7(hdr, &vc);
694 ret = verify_io_u_sha256(hdr, &vc);
697 ret = verify_io_u_sha512(hdr, &vc);
700 ret = verify_io_u_meta(hdr, td, &vc);
703 ret = verify_io_u_sha1(hdr, &vc);
706 log_err("Bad verify type %u\n", hdr->verify_type);
712 if (ret && td->o.verify_fatal)
718 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
719 struct io_u *io_u, unsigned int header_num)
721 struct vhdr_meta *vh = hdr_priv(hdr);
723 vh->thread = td->thread_number;
725 vh->time_sec = io_u->start_time.tv_sec;
726 vh->time_usec = io_u->start_time.tv_usec;
728 vh->numberio = td->io_issues[DDIR_WRITE];
730 vh->offset = io_u->offset + header_num * td->o.verify_interval;
733 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
735 struct vhdr_sha512 *vh = hdr_priv(hdr);
736 struct sha512_ctx sha512_ctx = {
740 sha512_init(&sha512_ctx);
741 sha512_update(&sha512_ctx, p, len);
744 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
746 struct vhdr_sha256 *vh = hdr_priv(hdr);
747 struct sha256_ctx sha256_ctx = {
751 sha256_init(&sha256_ctx);
752 sha256_update(&sha256_ctx, p, len);
755 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
757 struct vhdr_sha1 *vh = hdr_priv(hdr);
758 struct sha1_ctx sha1_ctx = {
762 sha1_init(&sha1_ctx);
763 sha1_update(&sha1_ctx, p, len);
766 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
768 struct vhdr_crc7 *vh = hdr_priv(hdr);
770 vh->crc7 = crc7(p, len);
773 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
775 struct vhdr_crc16 *vh = hdr_priv(hdr);
777 vh->crc16 = crc16(p, len);
780 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
782 struct vhdr_crc32 *vh = hdr_priv(hdr);
784 vh->crc32 = crc32(p, len);
787 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
789 struct vhdr_crc32 *vh = hdr_priv(hdr);
791 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
792 vh->crc32 = crc32c_intel(p, len);
794 vh->crc32 = crc32c(p, len);
797 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
799 struct vhdr_crc64 *vh = hdr_priv(hdr);
801 vh->crc64 = crc64(p, len);
804 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
806 struct vhdr_md5 *vh = hdr_priv(hdr);
807 struct md5_ctx md5_ctx = {
808 .hash = (uint32_t *) vh->md5_digest,
812 md5_update(&md5_ctx, p, len);
815 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
816 struct verify_header *hdr, unsigned int header_num,
817 unsigned int header_len)
819 unsigned int data_len;
824 hdr->fio_magic = FIO_HDR_MAGIC;
825 hdr->len = header_len;
826 hdr->verify_type = td->o.verify;
827 hdr->rand_seed = io_u->rand_seed;
828 data_len = header_len - hdr_size(hdr);
830 data = p + hdr_size(hdr);
831 switch (td->o.verify) {
833 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
835 fill_md5(hdr, data, data_len);
838 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
840 fill_crc64(hdr, data, data_len);
843 case VERIFY_CRC32C_INTEL:
844 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
846 fill_crc32c(hdr, data, data_len);
849 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
851 fill_crc32(hdr, data, data_len);
854 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
856 fill_crc16(hdr, data, data_len);
859 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
861 fill_crc7(hdr, data, data_len);
864 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
866 fill_sha256(hdr, data, data_len);
869 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
871 fill_sha512(hdr, data, data_len);
874 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
876 fill_meta(hdr, td, io_u, header_num);
879 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
881 fill_sha1(hdr, data, data_len);
884 log_err("fio: bad verify type: %d\n", td->o.verify);
887 if (td->o.verify_offset)
888 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
892 * fill body of io_u->buf with random data and add a header with the
895 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
897 if (td->o.verify == VERIFY_NULL)
900 fill_pattern_headers(td, io_u, 0, 0);
903 int get_next_verify(struct thread_data *td, struct io_u *io_u)
905 struct io_piece *ipo = NULL;
908 * this io_u is from a requeue, we already filled the offsets
913 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
914 struct rb_node *n = rb_first(&td->io_hist_tree);
916 ipo = rb_entry(n, struct io_piece, rb_node);
917 rb_erase(n, &td->io_hist_tree);
918 assert(ipo->flags & IP_F_ONRB);
919 ipo->flags &= ~IP_F_ONRB;
920 } else if (!flist_empty(&td->io_hist_list)) {
921 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
922 flist_del(&ipo->list);
923 assert(ipo->flags & IP_F_ONLIST);
924 ipo->flags &= ~IP_F_ONLIST;
930 io_u->offset = ipo->offset;
931 io_u->buflen = ipo->len;
932 io_u->file = ipo->file;
934 if (ipo->flags & IP_F_TRIMMED)
935 io_u->flags |= IO_U_F_TRIMMED;
937 if (!fio_file_open(io_u->file)) {
938 int r = td_io_open_file(td, io_u->file);
941 dprint(FD_VERIFY, "failed file %s open\n",
942 io_u->file->file_name);
948 assert(fio_file_open(io_u->file));
949 io_u->ddir = DDIR_READ;
950 io_u->xfer_buf = io_u->buf;
951 io_u->xfer_buflen = io_u->buflen;
953 remove_trim_entry(td, ipo);
955 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
959 dprint(FD_VERIFY, "get_next_verify: empty\n");
963 static void *verify_async_thread(void *data)
965 struct thread_data *td = data;
969 if (td->o.verify_cpumask_set &&
970 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
971 log_err("fio: failed setting verify thread affinity\n");
979 if (td->verify_thread_exit)
982 pthread_mutex_lock(&td->io_u_lock);
984 while (flist_empty(&td->verify_list) &&
985 !td->verify_thread_exit) {
986 ret = pthread_cond_wait(&td->verify_cond,
989 pthread_mutex_unlock(&td->io_u_lock);
994 flist_splice_init(&td->verify_list, &list);
995 pthread_mutex_unlock(&td->io_u_lock);
997 if (flist_empty(&list))
1000 while (!flist_empty(&list)) {
1001 io_u = flist_entry(list.next, struct io_u, list);
1002 flist_del_init(&io_u->list);
1004 ret = verify_io_u(td, io_u);
1008 if (td->o.continue_on_error &&
1009 td_non_fatal_error(ret)) {
1010 update_error_count(td, ret);
1018 td_verror(td, ret, "async_verify");
1019 if (td->o.verify_fatal)
1024 pthread_mutex_lock(&td->io_u_lock);
1025 td->nr_verify_threads--;
1026 pthread_mutex_unlock(&td->io_u_lock);
1028 pthread_cond_signal(&td->free_cond);
1032 int verify_async_init(struct thread_data *td)
1035 pthread_attr_t attr;
1037 pthread_attr_init(&attr);
1038 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1040 td->verify_thread_exit = 0;
1042 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1043 for (i = 0; i < td->o.verify_async; i++) {
1044 ret = pthread_create(&td->verify_threads[i], &attr,
1045 verify_async_thread, td);
1047 log_err("fio: async verify creation failed: %s\n",
1051 ret = pthread_detach(td->verify_threads[i]);
1053 log_err("fio: async verify thread detach failed: %s\n",
1057 td->nr_verify_threads++;
1060 pthread_attr_destroy(&attr);
1062 if (i != td->o.verify_async) {
1063 log_err("fio: only %d verify threads started, exiting\n", i);
1064 td->verify_thread_exit = 1;
1066 pthread_cond_broadcast(&td->verify_cond);
1073 void verify_async_exit(struct thread_data *td)
1075 td->verify_thread_exit = 1;
1077 pthread_cond_broadcast(&td->verify_cond);
1079 pthread_mutex_lock(&td->io_u_lock);
1081 while (td->nr_verify_threads)
1082 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1084 pthread_mutex_unlock(&td->io_u_lock);
1085 free(td->verify_threads);
1086 td->verify_threads = NULL;