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);
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;
273 * Dump the contents we just read off disk
275 hdr_offset = vc->hdr_num * hdr->len;
277 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
278 "received", vc->io_u->file);
281 * Allocate a new buf and re-generate the original data
283 buf = malloc(io_u->buflen);
286 dummy.rand_seed = hdr->rand_seed;
287 dummy.buf_filled_len = 0;
289 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
291 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
292 "expected", vc->io_u->file);
296 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
298 unsigned long long offset;
300 offset = vc->io_u->offset;
301 offset += vc->hdr_num * hdr->len;
302 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
303 vc->name, vc->io_u->file->file_name, offset, hdr->len);
305 if (vc->good_crc && vc->bad_crc) {
306 log_err(" Expected CRC: ");
307 hexdump(vc->good_crc, vc->crc_len);
308 log_err(" Received CRC: ");
309 hexdump(vc->bad_crc, vc->crc_len);
312 dump_verify_buffers(hdr, vc);
316 * Return data area 'header_num'
318 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
320 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
323 static unsigned int hweight8(unsigned int w)
325 unsigned int res = w - ((w >> 1) & 0x55);
327 res = (res & 0x33) + ((res >> 2) & 0x33);
328 return (res + (res >> 4)) & 0x0F;
331 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
333 struct thread_data *td = vc->td;
334 struct io_u *io_u = vc->io_u;
336 unsigned int header_size = __hdr_size(td->o.verify);
337 unsigned int len, mod, i;
339 pattern = td->o.verify_pattern;
340 buf = (void *) hdr + header_size;
341 len = get_hdr_inc(td, io_u) - header_size;
342 mod = header_size % td->o.verify_pattern_bytes;
344 for (i = 0; i < len; i++) {
345 if (buf[i] != pattern[mod]) {
348 bits = hweight8(buf[i] ^ pattern[mod]);
349 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
350 buf[i], pattern[mod], bits);
351 log_err("fio: bad pattern block offset %u\n", i);
352 dump_verify_buffers(hdr, vc);
356 if (mod == td->o.verify_pattern_bytes)
363 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
365 struct thread_data *td = vc->td;
366 struct vhdr_meta *vh = hdr_priv(hdr);
367 struct io_u *io_u = vc->io_u;
370 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
372 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
375 if (td->o.verify_pattern_bytes)
376 ret |= verify_io_u_pattern(hdr, vc);
382 log_verify_failure(hdr, vc);
386 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
388 void *p = io_u_verify_off(hdr, vc);
389 struct vhdr_sha512 *vh = hdr_priv(hdr);
391 struct sha512_ctx sha512_ctx = {
395 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
397 sha512_init(&sha512_ctx);
398 sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
400 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
404 vc->good_crc = vh->sha512;
405 vc->bad_crc = sha512_ctx.buf;
406 vc->crc_len = sizeof(vh->sha512);
407 log_verify_failure(hdr, vc);
411 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
413 void *p = io_u_verify_off(hdr, vc);
414 struct vhdr_sha256 *vh = hdr_priv(hdr);
416 struct sha256_ctx sha256_ctx = {
420 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
422 sha256_init(&sha256_ctx);
423 sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
425 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
429 vc->good_crc = vh->sha256;
430 vc->bad_crc = sha256_ctx.buf;
431 vc->crc_len = sizeof(vh->sha256);
432 log_verify_failure(hdr, vc);
436 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
438 void *p = io_u_verify_off(hdr, vc);
439 struct vhdr_sha1 *vh = hdr_priv(hdr);
441 struct sha1_ctx sha1_ctx = {
445 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
447 sha1_init(&sha1_ctx);
448 sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
450 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
454 vc->good_crc = vh->sha1;
455 vc->bad_crc = sha1_ctx.H;
456 vc->crc_len = sizeof(vh->sha1);
457 log_verify_failure(hdr, vc);
461 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
463 void *p = io_u_verify_off(hdr, vc);
464 struct vhdr_crc7 *vh = hdr_priv(hdr);
467 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
469 c = crc7(p, hdr->len - hdr_size(hdr));
475 vc->good_crc = &vh->crc7;
478 log_verify_failure(hdr, vc);
482 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
484 void *p = io_u_verify_off(hdr, vc);
485 struct vhdr_crc16 *vh = hdr_priv(hdr);
488 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
490 c = crc16(p, hdr->len - hdr_size(hdr));
496 vc->good_crc = &vh->crc16;
499 log_verify_failure(hdr, vc);
503 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
505 void *p = io_u_verify_off(hdr, vc);
506 struct vhdr_crc64 *vh = hdr_priv(hdr);
507 unsigned long long c;
509 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
511 c = crc64(p, hdr->len - hdr_size(hdr));
517 vc->good_crc = &vh->crc64;
520 log_verify_failure(hdr, vc);
524 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
526 void *p = io_u_verify_off(hdr, vc);
527 struct vhdr_crc32 *vh = hdr_priv(hdr);
530 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
532 c = crc32(p, hdr->len - hdr_size(hdr));
538 vc->good_crc = &vh->crc32;
541 log_verify_failure(hdr, vc);
545 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
547 void *p = io_u_verify_off(hdr, vc);
548 struct vhdr_crc32 *vh = hdr_priv(hdr);
551 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
553 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
554 c = crc32c_intel(p, hdr->len - hdr_size(hdr));
556 c = crc32c(p, hdr->len - hdr_size(hdr));
562 vc->good_crc = &vh->crc32;
565 log_verify_failure(hdr, vc);
569 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
571 void *p = io_u_verify_off(hdr, vc);
572 struct vhdr_md5 *vh = hdr_priv(hdr);
573 uint32_t hash[MD5_HASH_WORDS];
574 struct md5_ctx md5_ctx = {
578 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
581 md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
583 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
587 vc->good_crc = vh->md5_digest;
588 vc->bad_crc = md5_ctx.hash;
589 vc->crc_len = sizeof(hash);
590 log_verify_failure(hdr, vc);
595 * Push IO verification to a separate thread
597 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
600 put_file_log(td, io_u->file);
604 pthread_mutex_lock(&td->io_u_lock);
606 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
608 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
610 flist_del(&io_u->list);
611 flist_add_tail(&io_u->list, &td->verify_list);
612 io_u->flags |= IO_U_F_FREE_DEF;
613 pthread_mutex_unlock(&td->io_u_lock);
615 pthread_cond_signal(&td->verify_cond);
619 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
621 static char zero_buf[1024];
622 unsigned int this_len, len;
626 if (!td->o.trim_zero)
632 this_len = sizeof(zero_buf);
635 if (memcmp(p, zero_buf, this_len)) {
646 log_err("trim: verify failed at file %s offset %llu, length %lu"
647 ", block offset %lu\n",
648 io_u->file->file_name, io_u->offset, io_u->buflen,
649 (unsigned long) (p - io_u->buf));
653 int verify_io_u(struct thread_data *td, struct io_u *io_u)
655 struct verify_header *hdr;
656 unsigned int header_size, hdr_inc, hdr_num = 0;
660 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
662 if (io_u->flags & IO_U_F_TRIMMED) {
663 ret = verify_trimmed_io_u(td, io_u);
667 hdr_inc = get_hdr_inc(td, io_u);
670 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
671 p += hdr_inc, hdr_num++) {
678 if (ret && td->o.verify_fatal)
681 header_size = __hdr_size(td->o.verify);
682 if (td->o.verify_offset)
683 memswp(p, p + td->o.verify_offset, header_size);
686 if (hdr->fio_magic != FIO_HDR_MAGIC) {
687 log_err("verify: bad magic header %x, wanted %x at file %s offset %llu, length %u\n",
688 hdr->fio_magic, FIO_HDR_MAGIC,
689 io_u->file->file_name,
690 io_u->offset + hdr_num * hdr->len, hdr->len);
694 switch (hdr->verify_type) {
696 ret = verify_io_u_md5(hdr, &vc);
699 ret = verify_io_u_crc64(hdr, &vc);
702 case VERIFY_CRC32C_INTEL:
703 ret = verify_io_u_crc32c(hdr, &vc);
706 ret = verify_io_u_crc32(hdr, &vc);
709 ret = verify_io_u_crc16(hdr, &vc);
712 ret = verify_io_u_crc7(hdr, &vc);
715 ret = verify_io_u_sha256(hdr, &vc);
718 ret = verify_io_u_sha512(hdr, &vc);
721 ret = verify_io_u_meta(hdr, &vc);
724 ret = verify_io_u_sha1(hdr, &vc);
727 ret = verify_io_u_pattern(hdr, &vc);
730 log_err("Bad verify type %u\n", hdr->verify_type);
736 if (ret && td->o.verify_fatal)
742 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
743 struct io_u *io_u, unsigned int header_num)
745 struct vhdr_meta *vh = hdr_priv(hdr);
747 vh->thread = td->thread_number;
749 vh->time_sec = io_u->start_time.tv_sec;
750 vh->time_usec = io_u->start_time.tv_usec;
752 vh->numberio = td->io_issues[DDIR_WRITE];
754 vh->offset = io_u->offset + header_num * td->o.verify_interval;
757 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
759 struct vhdr_sha512 *vh = hdr_priv(hdr);
760 struct sha512_ctx sha512_ctx = {
764 sha512_init(&sha512_ctx);
765 sha512_update(&sha512_ctx, p, len);
768 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
770 struct vhdr_sha256 *vh = hdr_priv(hdr);
771 struct sha256_ctx sha256_ctx = {
775 sha256_init(&sha256_ctx);
776 sha256_update(&sha256_ctx, p, len);
779 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
781 struct vhdr_sha1 *vh = hdr_priv(hdr);
782 struct sha1_ctx sha1_ctx = {
786 sha1_init(&sha1_ctx);
787 sha1_update(&sha1_ctx, p, len);
790 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
792 struct vhdr_crc7 *vh = hdr_priv(hdr);
794 vh->crc7 = crc7(p, len);
797 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
799 struct vhdr_crc16 *vh = hdr_priv(hdr);
801 vh->crc16 = crc16(p, len);
804 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
806 struct vhdr_crc32 *vh = hdr_priv(hdr);
808 vh->crc32 = crc32(p, len);
811 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
813 struct vhdr_crc32 *vh = hdr_priv(hdr);
815 if (hdr->verify_type == VERIFY_CRC32C_INTEL)
816 vh->crc32 = crc32c_intel(p, len);
818 vh->crc32 = crc32c(p, len);
821 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
823 struct vhdr_crc64 *vh = hdr_priv(hdr);
825 vh->crc64 = crc64(p, len);
828 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
830 struct vhdr_md5 *vh = hdr_priv(hdr);
831 struct md5_ctx md5_ctx = {
832 .hash = (uint32_t *) vh->md5_digest,
836 md5_update(&md5_ctx, p, len);
839 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
840 struct verify_header *hdr, unsigned int header_num,
841 unsigned int header_len)
843 unsigned int data_len;
848 hdr->fio_magic = FIO_HDR_MAGIC;
849 hdr->len = header_len;
850 hdr->verify_type = td->o.verify;
851 hdr->rand_seed = io_u->rand_seed;
852 data_len = header_len - hdr_size(hdr);
854 data = p + hdr_size(hdr);
855 switch (td->o.verify) {
857 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
859 fill_md5(hdr, data, data_len);
862 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
864 fill_crc64(hdr, data, data_len);
867 case VERIFY_CRC32C_INTEL:
868 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
870 fill_crc32c(hdr, data, data_len);
873 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
875 fill_crc32(hdr, data, data_len);
878 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
880 fill_crc16(hdr, data, data_len);
883 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
885 fill_crc7(hdr, data, data_len);
888 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
890 fill_sha256(hdr, data, data_len);
893 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
895 fill_sha512(hdr, data, data_len);
898 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
900 fill_meta(hdr, td, io_u, header_num);
903 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
905 fill_sha1(hdr, data, data_len);
908 /* nothing to do here */
911 log_err("fio: bad verify type: %d\n", td->o.verify);
914 if (td->o.verify_offset)
915 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
919 * fill body of io_u->buf with random data and add a header with the
922 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
924 if (td->o.verify == VERIFY_NULL)
927 fill_pattern_headers(td, io_u, 0, 0);
930 int get_next_verify(struct thread_data *td, struct io_u *io_u)
932 struct io_piece *ipo = NULL;
935 * this io_u is from a requeue, we already filled the offsets
940 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
941 struct rb_node *n = rb_first(&td->io_hist_tree);
943 ipo = rb_entry(n, struct io_piece, rb_node);
944 rb_erase(n, &td->io_hist_tree);
945 assert(ipo->flags & IP_F_ONRB);
946 ipo->flags &= ~IP_F_ONRB;
947 } else if (!flist_empty(&td->io_hist_list)) {
948 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
949 flist_del(&ipo->list);
950 assert(ipo->flags & IP_F_ONLIST);
951 ipo->flags &= ~IP_F_ONLIST;
957 io_u->offset = ipo->offset;
958 io_u->buflen = ipo->len;
959 io_u->file = ipo->file;
961 if (ipo->flags & IP_F_TRIMMED)
962 io_u->flags |= IO_U_F_TRIMMED;
964 if (!fio_file_open(io_u->file)) {
965 int r = td_io_open_file(td, io_u->file);
968 dprint(FD_VERIFY, "failed file %s open\n",
969 io_u->file->file_name);
975 assert(fio_file_open(io_u->file));
976 io_u->ddir = DDIR_READ;
977 io_u->xfer_buf = io_u->buf;
978 io_u->xfer_buflen = io_u->buflen;
980 remove_trim_entry(td, ipo);
982 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
986 dprint(FD_VERIFY, "get_next_verify: empty\n");
990 static void *verify_async_thread(void *data)
992 struct thread_data *td = data;
996 if (td->o.verify_cpumask_set &&
997 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
998 log_err("fio: failed setting verify thread affinity\n");
1006 if (td->verify_thread_exit)
1009 pthread_mutex_lock(&td->io_u_lock);
1011 while (flist_empty(&td->verify_list) &&
1012 !td->verify_thread_exit) {
1013 ret = pthread_cond_wait(&td->verify_cond,
1016 pthread_mutex_unlock(&td->io_u_lock);
1021 flist_splice_init(&td->verify_list, &list);
1022 pthread_mutex_unlock(&td->io_u_lock);
1024 if (flist_empty(&list))
1027 while (!flist_empty(&list)) {
1028 io_u = flist_entry(list.next, struct io_u, list);
1029 flist_del_init(&io_u->list);
1031 ret = verify_io_u(td, io_u);
1035 if (td->o.continue_on_error &&
1036 td_non_fatal_error(ret)) {
1037 update_error_count(td, ret);
1045 td_verror(td, ret, "async_verify");
1046 if (td->o.verify_fatal)
1051 pthread_mutex_lock(&td->io_u_lock);
1052 td->nr_verify_threads--;
1053 pthread_mutex_unlock(&td->io_u_lock);
1055 pthread_cond_signal(&td->free_cond);
1059 int verify_async_init(struct thread_data *td)
1062 pthread_attr_t attr;
1064 pthread_attr_init(&attr);
1065 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1067 td->verify_thread_exit = 0;
1069 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1070 for (i = 0; i < td->o.verify_async; i++) {
1071 ret = pthread_create(&td->verify_threads[i], &attr,
1072 verify_async_thread, td);
1074 log_err("fio: async verify creation failed: %s\n",
1078 ret = pthread_detach(td->verify_threads[i]);
1080 log_err("fio: async verify thread detach failed: %s\n",
1084 td->nr_verify_threads++;
1087 pthread_attr_destroy(&attr);
1089 if (i != td->o.verify_async) {
1090 log_err("fio: only %d verify threads started, exiting\n", i);
1091 td->verify_thread_exit = 1;
1093 pthread_cond_broadcast(&td->verify_cond);
1100 void verify_async_exit(struct thread_data *td)
1102 td->verify_thread_exit = 1;
1104 pthread_cond_broadcast(&td->verify_cond);
1106 pthread_mutex_lock(&td->io_u_lock);
1108 while (td->nr_verify_threads)
1109 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1111 pthread_mutex_unlock(&td->io_u_lock);
1112 free(td->verify_threads);
1113 td->verify_threads = NULL;