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(&td->buf_state, p, len);
43 * See below write barrier comment
47 if (io_u->buf_filled_len >= len) {
48 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
52 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
53 memset(p, td->o.verify_pattern[0], len);
55 * We need to ensure that the pattern stores are seen before
56 * the fill length store, or we could observe headers that
57 * aren't valid to the extent notified by the fill length
60 io_u->buf_filled_len = len;
63 unsigned int i = 0, size = 0;
68 if (io_u->buf_filled_len >= len) {
69 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
70 td->o.verify_pattern_bytes, len);
74 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
75 td->o.verify_pattern_bytes, len);
78 size = td->o.verify_pattern_bytes;
81 memcpy(b+i, td->o.verify_pattern, size);
85 io_u->buf_filled_len = len;
91 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
95 hdr_inc = io_u->buflen;
96 if (td->o.verify_interval)
97 hdr_inc = td->o.verify_interval;
102 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
103 unsigned long seed, int use_seed)
105 unsigned int hdr_inc, header_num;
106 struct verify_header *hdr;
109 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
111 hdr_inc = get_hdr_inc(td, io_u);
113 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
115 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
120 static void memswp(void *buf1, void *buf2, unsigned int len)
124 assert(len <= sizeof(swap));
126 memcpy(&swap, buf1, len);
127 memcpy(buf1, buf2, len);
128 memcpy(buf2, &swap, len);
131 static void hexdump(void *buffer, int len)
133 unsigned char *p = buffer;
136 for (i = 0; i < len; i++)
137 log_err("%02x", p[i]);
142 * Prepare for seperation of verify_header and checksum header
144 static inline unsigned int __hdr_size(int verify_type)
146 unsigned int len = 0;
148 switch (verify_type) {
154 len = sizeof(struct vhdr_md5);
157 len = sizeof(struct vhdr_crc64);
161 case VERIFY_CRC32C_INTEL:
162 len = sizeof(struct vhdr_crc32);
165 len = sizeof(struct vhdr_crc16);
168 len = sizeof(struct vhdr_crc7);
171 len = sizeof(struct vhdr_sha256);
174 len = sizeof(struct vhdr_sha512);
177 len = sizeof(struct vhdr_meta);
180 len = sizeof(struct vhdr_sha1);
186 log_err("fio: unknown verify header!\n");
190 return len + sizeof(struct verify_header);
193 static inline unsigned int hdr_size(struct verify_header *hdr)
195 return __hdr_size(hdr->verify_type);
198 static void *hdr_priv(struct verify_header *hdr)
202 return priv + sizeof(struct verify_header);
206 * Verify container, pass info to verify handlers and allow them to
207 * pass info back in case of error
214 unsigned int hdr_num;
215 struct thread_data *td;
218 * Output, only valid in case of error
223 unsigned int crc_len;
226 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
227 const char *type, struct fio_file *f)
229 char *ptr, fname[256];
232 ptr = strdup(f->file_name);
233 strcpy(fname, basename(ptr));
235 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
237 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
239 perror("open verify buf file");
244 ret = write(fd, buf, len);
248 perror("write verify buf file");
256 log_err(" %s data dumped as %s\n", type, fname);
261 * Dump the contents of the read block and re-generate the correct data
264 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
266 struct thread_data *td = vc->td;
267 struct io_u *io_u = vc->io_u;
268 unsigned long hdr_offset;
272 if (!td->o.verify_dump)
276 * Dump the contents we just read off disk
278 hdr_offset = vc->hdr_num * hdr->len;
280 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
281 "received", vc->io_u->file);
284 * Allocate a new buf and re-generate the original data
286 buf = malloc(io_u->buflen);
289 dummy.rand_seed = hdr->rand_seed;
290 dummy.buf_filled_len = 0;
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 unsigned int hweight8(unsigned int w)
328 unsigned int res = w - ((w >> 1) & 0x55);
330 res = (res & 0x33) + ((res >> 2) & 0x33);
331 return (res + (res >> 4)) & 0x0F;
334 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
336 struct thread_data *td = vc->td;
337 struct io_u *io_u = vc->io_u;
339 unsigned int header_size = __hdr_size(td->o.verify);
340 unsigned int len, mod, i;
342 pattern = td->o.verify_pattern;
343 buf = (void *) hdr + header_size;
344 len = get_hdr_inc(td, io_u) - header_size;
345 mod = header_size % td->o.verify_pattern_bytes;
347 for (i = 0; i < len; i++) {
348 if (buf[i] != pattern[mod]) {
351 bits = hweight8(buf[i] ^ pattern[mod]);
352 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
353 buf[i], pattern[mod], bits);
354 log_err("fio: bad pattern block offset %u\n", i);
355 dump_verify_buffers(hdr, vc);
359 if (mod == td->o.verify_pattern_bytes)
366 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
368 struct thread_data *td = vc->td;
369 struct vhdr_meta *vh = hdr_priv(hdr);
370 struct io_u *io_u = vc->io_u;
373 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
375 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
378 if (td->o.verify_pattern_bytes)
379 ret |= verify_io_u_pattern(hdr, vc);
385 log_verify_failure(hdr, vc);
389 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
391 void *p = io_u_verify_off(hdr, vc);
392 struct vhdr_sha512 *vh = hdr_priv(hdr);
394 struct sha512_ctx sha512_ctx = {
398 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
400 sha512_init(&sha512_ctx);
401 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
403 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
407 vc->good_crc = vh->sha512;
408 vc->bad_crc = sha512_ctx.buf;
409 vc->crc_len = sizeof(vh->sha512);
410 log_verify_failure(hdr, vc);
414 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
416 void *p = io_u_verify_off(hdr, vc);
417 struct vhdr_sha256 *vh = hdr_priv(hdr);
419 struct sha256_ctx sha256_ctx = {
423 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
425 sha256_init(&sha256_ctx);
426 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
428 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
432 vc->good_crc = vh->sha256;
433 vc->bad_crc = sha256_ctx.buf;
434 vc->crc_len = sizeof(vh->sha256);
435 log_verify_failure(hdr, vc);
439 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
441 void *p = io_u_verify_off(hdr, vc);
442 struct vhdr_sha1 *vh = hdr_priv(hdr);
444 struct sha1_ctx sha1_ctx = {
448 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
450 sha1_init(&sha1_ctx);
451 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
453 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
457 vc->good_crc = vh->sha1;
458 vc->bad_crc = sha1_ctx.H;
459 vc->crc_len = sizeof(vh->sha1);
460 log_verify_failure(hdr, vc);
464 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
466 void *p = io_u_verify_off(hdr, vc);
467 struct vhdr_crc7 *vh = hdr_priv(hdr);
470 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
472 c = crc7(p, hdr->len - hdr_size(hdr));
478 vc->good_crc = &vh->crc7;
481 log_verify_failure(hdr, vc);
485 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
487 void *p = io_u_verify_off(hdr, vc);
488 struct vhdr_crc16 *vh = hdr_priv(hdr);
491 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
493 c = crc16(p, hdr->len - hdr_size(hdr));
499 vc->good_crc = &vh->crc16;
502 log_verify_failure(hdr, vc);
506 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
508 void *p = io_u_verify_off(hdr, vc);
509 struct vhdr_crc64 *vh = hdr_priv(hdr);
510 unsigned long long c;
512 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
514 c = crc64(p, hdr->len - hdr_size(hdr));
520 vc->good_crc = &vh->crc64;
523 log_verify_failure(hdr, vc);
527 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
529 void *p = io_u_verify_off(hdr, vc);
530 struct vhdr_crc32 *vh = hdr_priv(hdr);
533 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
535 c = crc32(p, hdr->len - hdr_size(hdr));
541 vc->good_crc = &vh->crc32;
544 log_verify_failure(hdr, vc);
548 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
550 void *p = io_u_verify_off(hdr, vc);
551 struct vhdr_crc32 *vh = hdr_priv(hdr);
554 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
556 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
557 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
559 c = crc32c(p, hdr->len - hdr_size(hdr));
565 vc->good_crc = &vh->crc32;
568 log_verify_failure(hdr, vc);
572 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
574 void *p = io_u_verify_off(hdr, vc);
575 struct vhdr_md5 *vh = hdr_priv(hdr);
576 uint32_t hash[MD5_HASH_WORDS];
577 struct md5_ctx md5_ctx = {
581 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
584 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
586 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
590 vc->good_crc = vh->md5_digest;
591 vc->bad_crc = md5_ctx.hash;
592 vc->crc_len = sizeof(hash);
593 log_verify_failure(hdr, vc);
598 * Push IO verification to a separate thread
600 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
603 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_del(&io_u->list);
614 flist_add_tail(&io_u->list, &td->verify_list);
615 io_u->flags |= IO_U_F_FREE_DEF;
616 pthread_mutex_unlock(&td->io_u_lock);
618 pthread_cond_signal(&td->verify_cond);
622 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
624 static char zero_buf[1024];
625 unsigned int this_len, len;
629 if (!td->o.trim_zero)
635 this_len = sizeof(zero_buf);
638 if (memcmp(p, zero_buf, this_len)) {
649 log_err("trim: verify failed at file %s offset %llu, length %lu"
650 ", block offset %lu\n",
651 io_u->file->file_name, io_u->offset, io_u->buflen,
652 (unsigned long) (p - io_u->buf));
656 int verify_io_u(struct thread_data *td, struct io_u *io_u)
658 struct verify_header *hdr;
659 unsigned int header_size, hdr_inc, hdr_num = 0;
663 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
665 if (io_u->flags & IO_U_F_TRIMMED) {
666 ret = verify_trimmed_io_u(td, io_u);
670 hdr_inc = get_hdr_inc(td, io_u);
673 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
674 p += hdr_inc, hdr_num++) {
681 if (ret && td->o.verify_fatal)
684 header_size = __hdr_size(td->o.verify);
685 if (td->o.verify_offset)
686 memswp(p, p + td->o.verify_offset, header_size);
689 if (hdr->fio_magic != FIO_HDR_MAGIC) {
690 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
691 hdr->fio_magic, FIO_HDR_MAGIC,
692 io_u->file->file_name,
693 io_u->offset + hdr_num * hdr->len, hdr->len);
697 switch (hdr->verify_type) {
699 ret = verify_io_u_md5(hdr, &vc);
702 ret = verify_io_u_crc64(hdr, &vc);
705 case VERIFY_CRC32C_INTEL:
706 ret = verify_io_u_crc32c(hdr, &vc);
709 ret = verify_io_u_crc32(hdr, &vc);
712 ret = verify_io_u_crc16(hdr, &vc);
715 ret = verify_io_u_crc7(hdr, &vc);
718 ret = verify_io_u_sha256(hdr, &vc);
721 ret = verify_io_u_sha512(hdr, &vc);
724 ret = verify_io_u_meta(hdr, &vc);
727 ret = verify_io_u_sha1(hdr, &vc);
730 ret = verify_io_u_pattern(hdr, &vc);
733 log_err("Bad verify type %u\n", hdr->verify_type);
739 if (ret && td->o.verify_fatal)
745 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
746 struct io_u *io_u, unsigned int header_num)
748 struct vhdr_meta *vh = hdr_priv(hdr);
750 vh->thread = td->thread_number;
752 vh->time_sec = io_u->start_time.tv_sec;
753 vh->time_usec = io_u->start_time.tv_usec;
755 vh->numberio = td->io_issues[DDIR_WRITE];
757 vh->offset = io_u->offset + header_num * td->o.verify_interval;
760 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
762 struct vhdr_sha512 *vh = hdr_priv(hdr);
763 struct sha512_ctx sha512_ctx = {
767 sha512_init(&sha512_ctx);
768 sha512_update(&sha512_ctx, p, len);
771 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
773 struct vhdr_sha256 *vh = hdr_priv(hdr);
774 struct sha256_ctx sha256_ctx = {
778 sha256_init(&sha256_ctx);
779 sha256_update(&sha256_ctx, p, len);
782 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
784 struct vhdr_sha1 *vh = hdr_priv(hdr);
785 struct sha1_ctx sha1_ctx = {
789 sha1_init(&sha1_ctx);
790 sha1_update(&sha1_ctx, p, len);
793 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
795 struct vhdr_crc7 *vh = hdr_priv(hdr);
797 vh->crc7 = crc7(p, len);
800 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
802 struct vhdr_crc16 *vh = hdr_priv(hdr);
804 vh->crc16 = crc16(p, len);
807 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
809 struct vhdr_crc32 *vh = hdr_priv(hdr);
811 vh->crc32 = crc32(p, len);
814 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
816 struct vhdr_crc32 *vh = hdr_priv(hdr);
818 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
819 vh->crc32 = crc32c_intel(p, len);
821 vh->crc32 = crc32c(p, len);
824 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
826 struct vhdr_crc64 *vh = hdr_priv(hdr);
828 vh->crc64 = crc64(p, len);
831 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
833 struct vhdr_md5 *vh = hdr_priv(hdr);
834 struct md5_ctx md5_ctx = {
835 .hash = (uint32_t *) vh->md5_digest,
839 md5_update(&md5_ctx, p, len);
842 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
843 struct verify_header *hdr, unsigned int header_num,
844 unsigned int header_len)
846 unsigned int data_len;
851 hdr->fio_magic = FIO_HDR_MAGIC;
852 hdr->len = header_len;
853 hdr->verify_type = td->o.verify;
854 hdr->rand_seed = io_u->rand_seed;
855 data_len = header_len - hdr_size(hdr);
857 data = p + hdr_size(hdr);
858 switch (td->o.verify) {
860 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
862 fill_md5(hdr, data, data_len);
865 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
867 fill_crc64(hdr, data, data_len);
870 case VERIFY_CRC32C_INTEL:
871 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
873 fill_crc32c(hdr, data, data_len);
876 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
878 fill_crc32(hdr, data, data_len);
881 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
883 fill_crc16(hdr, data, data_len);
886 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
888 fill_crc7(hdr, data, data_len);
891 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
893 fill_sha256(hdr, data, data_len);
896 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
898 fill_sha512(hdr, data, data_len);
901 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
903 fill_meta(hdr, td, io_u, header_num);
906 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
908 fill_sha1(hdr, data, data_len);
911 /* nothing to do here */
914 log_err("fio: bad verify type: %d\n", td->o.verify);
917 if (td->o.verify_offset)
918 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
922 * fill body of io_u->buf with random data and add a header with the
925 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
927 if (td->o.verify == VERIFY_NULL)
930 fill_pattern_headers(td, io_u, 0, 0);
933 int get_next_verify(struct thread_data *td, struct io_u *io_u)
935 struct io_piece *ipo = NULL;
938 * this io_u is from a requeue, we already filled the offsets
943 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
944 struct rb_node *n = rb_first(&td->io_hist_tree);
946 ipo = rb_entry(n, struct io_piece, rb_node);
947 rb_erase(n, &td->io_hist_tree);
948 assert(ipo->flags & IP_F_ONRB);
949 ipo->flags &= ~IP_F_ONRB;
950 } else if (!flist_empty(&td->io_hist_list)) {
951 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
952 flist_del(&ipo->list);
953 assert(ipo->flags & IP_F_ONLIST);
954 ipo->flags &= ~IP_F_ONLIST;
960 io_u->offset = ipo->offset;
961 io_u->buflen = ipo->len;
962 io_u->file = ipo->file;
964 if (ipo->flags & IP_F_TRIMMED)
965 io_u->flags |= IO_U_F_TRIMMED;
967 if (!fio_file_open(io_u->file)) {
968 int r = td_io_open_file(td, io_u->file);
971 dprint(FD_VERIFY, "failed file %s open\n",
972 io_u->file->file_name);
978 assert(fio_file_open(io_u->file));
979 io_u->ddir = DDIR_READ;
980 io_u->xfer_buf = io_u->buf;
981 io_u->xfer_buflen = io_u->buflen;
983 remove_trim_entry(td, ipo);
985 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
989 dprint(FD_VERIFY, "get_next_verify: empty\n");
993 static void *verify_async_thread(void *data)
995 struct thread_data *td = data;
999 if (td->o.verify_cpumask_set &&
1000 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1001 log_err("fio: failed setting verify thread affinity\n");
1009 if (td->verify_thread_exit)
1012 pthread_mutex_lock(&td->io_u_lock);
1014 while (flist_empty(&td->verify_list) &&
1015 !td->verify_thread_exit) {
1016 ret = pthread_cond_wait(&td->verify_cond,
1019 pthread_mutex_unlock(&td->io_u_lock);
1024 flist_splice_init(&td->verify_list, &list);
1025 pthread_mutex_unlock(&td->io_u_lock);
1027 if (flist_empty(&list))
1030 while (!flist_empty(&list)) {
1031 io_u = flist_entry(list.next, struct io_u, list);
1032 flist_del_init(&io_u->list);
1034 ret = verify_io_u(td, io_u);
1038 if (td->o.continue_on_error &&
1039 td_non_fatal_error(ret)) {
1040 update_error_count(td, ret);
1048 td_verror(td, ret, "async_verify");
1049 if (td->o.verify_fatal)
1054 pthread_mutex_lock(&td->io_u_lock);
1055 td->nr_verify_threads--;
1056 pthread_mutex_unlock(&td->io_u_lock);
1058 pthread_cond_signal(&td->free_cond);
1062 int verify_async_init(struct thread_data *td)
1065 pthread_attr_t attr;
1067 pthread_attr_init(&attr);
1068 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1070 td->verify_thread_exit = 0;
1072 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1073 for (i = 0; i < td->o.verify_async; i++) {
1074 ret = pthread_create(&td->verify_threads[i], &attr,
1075 verify_async_thread, td);
1077 log_err("fio: async verify creation failed: %s\n",
1081 ret = pthread_detach(td->verify_threads[i]);
1083 log_err("fio: async verify thread detach failed: %s\n",
1087 td->nr_verify_threads++;
1090 pthread_attr_destroy(&attr);
1092 if (i != td->o.verify_async) {
1093 log_err("fio: only %d verify threads started, exiting\n", i);
1094 td->verify_thread_exit = 1;
1096 pthread_cond_broadcast(&td->verify_cond);
1103 void verify_async_exit(struct thread_data *td)
1105 td->verify_thread_exit = 1;
1107 pthread_cond_broadcast(&td->verify_cond);
1109 pthread_mutex_lock(&td->io_u_lock);
1111 while (td->nr_verify_threads)
1112 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1114 pthread_mutex_unlock(&td->io_u_lock);
1115 free(td->verify_threads);
1116 td->verify_threads = NULL;