2 * IO verification helpers
16 #include "lib/hweight.h"
19 #include "crc/crc64.h"
20 #include "crc/crc32.h"
21 #include "crc/crc32c.h"
22 #include "crc/crc16.h"
24 #include "crc/sha256.h"
25 #include "crc/sha512.h"
28 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
29 struct verify_header *hdr, unsigned int header_num,
30 unsigned int header_len);
32 void fill_pattern(struct thread_data *td, void *p, unsigned int len, struct io_u *io_u, unsigned long seed, int use_seed)
34 switch (td->o.verify_pattern_bytes) {
36 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
38 __fill_random_buf(p, len, seed);
40 io_u->rand_seed = fill_random_buf(&td->buf_state, p, len);
43 if (io_u->buf_filled_len >= len) {
44 dprint(FD_VERIFY, "using already filled verify pattern b=0 len=%u\n", len);
47 dprint(FD_VERIFY, "fill verify pattern b=0 len=%u\n", len);
48 memset(p, td->o.verify_pattern[0], len);
49 io_u->buf_filled_len = len;
52 unsigned int i = 0, size = 0;
55 if (io_u->buf_filled_len >= len) {
56 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
57 td->o.verify_pattern_bytes, len);
61 dprint(FD_VERIFY, "fill verify pattern b=%d len=%u\n",
62 td->o.verify_pattern_bytes, len);
65 size = td->o.verify_pattern_bytes;
68 memcpy(b+i, td->o.verify_pattern, size);
71 io_u->buf_filled_len = len;
77 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
81 hdr_inc = io_u->buflen;
82 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
83 hdr_inc = td->o.verify_interval;
88 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
89 unsigned long seed, int use_seed)
91 unsigned int hdr_inc, header_num;
92 struct verify_header *hdr;
95 fill_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
97 hdr_inc = get_hdr_inc(td, io_u);
99 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
101 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
106 static void memswp(void *buf1, void *buf2, unsigned int len)
110 assert(len <= sizeof(swap));
112 memcpy(&swap, buf1, len);
113 memcpy(buf1, buf2, len);
114 memcpy(buf2, &swap, len);
117 static void hexdump(void *buffer, int len)
119 unsigned char *p = buffer;
122 for (i = 0; i < len; i++)
123 log_err("%02x", p[i]);
128 * Prepare for seperation of verify_header and checksum header
130 static inline unsigned int __hdr_size(int verify_type)
132 unsigned int len = 0;
134 switch (verify_type) {
140 len = sizeof(struct vhdr_md5);
143 len = sizeof(struct vhdr_crc64);
147 case VERIFY_CRC32C_INTEL:
148 len = sizeof(struct vhdr_crc32);
151 len = sizeof(struct vhdr_crc16);
154 len = sizeof(struct vhdr_crc7);
157 len = sizeof(struct vhdr_sha256);
160 len = sizeof(struct vhdr_sha512);
163 len = sizeof(struct vhdr_meta);
166 len = sizeof(struct vhdr_sha1);
172 log_err("fio: unknown verify header!\n");
176 return len + sizeof(struct verify_header);
179 static inline unsigned int hdr_size(struct verify_header *hdr)
181 return __hdr_size(hdr->verify_type);
184 static void *hdr_priv(struct verify_header *hdr)
188 return priv + sizeof(struct verify_header);
192 * Verify container, pass info to verify handlers and allow them to
193 * pass info back in case of error
200 unsigned int hdr_num;
201 struct thread_data *td;
204 * Output, only valid in case of error
209 unsigned int crc_len;
212 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
213 const char *type, struct fio_file *f)
215 char *ptr, fname[256];
218 ptr = strdup(f->file_name);
219 strcpy(fname, basename(ptr));
221 sprintf(fname + strlen(fname), ".%llu.%s", offset, type);
223 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
225 perror("open verify buf file");
230 ret = write(fd, buf, len);
234 perror("write verify buf file");
242 log_err(" %s data dumped as %s\n", type, fname);
247 * Dump the contents of the read block and re-generate the correct data
250 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
252 struct thread_data *td = vc->td;
253 struct io_u *io_u = vc->io_u;
254 unsigned long hdr_offset;
258 if (!td->o.verify_dump)
262 * Dump the contents we just read off disk
264 hdr_offset = vc->hdr_num * hdr->len;
266 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
267 "received", vc->io_u->file);
270 * Allocate a new buf and re-generate the original data
272 buf = malloc(io_u->buflen);
275 dummy.rand_seed = hdr->rand_seed;
276 dummy.buf_filled_len = 0;
278 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
280 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
281 "expected", vc->io_u->file);
285 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
287 unsigned long long offset;
289 offset = vc->io_u->offset;
290 offset += vc->hdr_num * hdr->len;
291 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
292 vc->name, vc->io_u->file->file_name, offset, hdr->len);
294 if (vc->good_crc && vc->bad_crc) {
295 log_err(" Expected CRC: ");
296 hexdump(vc->good_crc, vc->crc_len);
297 log_err(" Received CRC: ");
298 hexdump(vc->bad_crc, vc->crc_len);
301 dump_verify_buffers(hdr, vc);
305 * Return data area 'header_num'
307 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
309 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr);
312 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
314 struct thread_data *td = vc->td;
315 struct io_u *io_u = vc->io_u;
317 unsigned int header_size = __hdr_size(td->o.verify);
318 unsigned int len, mod, i, size, pattern_size;
320 pattern = td->o.verify_pattern;
321 pattern_size = td->o.verify_pattern_bytes;
322 if (pattern_size <= 1)
323 pattern_size = MAX_PATTERN_SIZE;
324 buf = (void *) hdr + header_size;
325 len = get_hdr_inc(td, io_u) - header_size;
326 mod = header_size % pattern_size;
328 for (i = 0; i < len; i += size) {
329 size = pattern_size - mod;
330 if (size > (len - i))
332 if (memcmp(buf + i, pattern + mod, size))
333 /* Let the slow compare find the first mismatch byte. */
338 for (; i < len; i++) {
339 if (buf[i] != pattern[mod]) {
342 bits = hweight8(buf[i] ^ pattern[mod]);
343 log_err("fio: got pattern %x, wanted %x. Bad bits %d\n",
344 buf[i], pattern[mod], bits);
345 log_err("fio: bad pattern block offset %u\n", i);
346 dump_verify_buffers(hdr, vc);
350 if (mod == td->o.verify_pattern_bytes)
357 static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
359 struct thread_data *td = vc->td;
360 struct vhdr_meta *vh = hdr_priv(hdr);
361 struct io_u *io_u = vc->io_u;
364 dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len);
366 if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval)
369 if (td->o.verify_pattern_bytes)
370 ret |= verify_io_u_pattern(hdr, vc);
376 log_verify_failure(hdr, vc);
380 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
382 void *p = io_u_verify_off(hdr, vc);
383 struct vhdr_sha512 *vh = hdr_priv(hdr);
385 struct fio_sha512_ctx sha512_ctx = {
389 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
391 fio_sha512_init(&sha512_ctx);
392 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr));
394 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
398 vc->good_crc = vh->sha512;
399 vc->bad_crc = sha512_ctx.buf;
400 vc->crc_len = sizeof(vh->sha512);
401 log_verify_failure(hdr, vc);
405 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
407 void *p = io_u_verify_off(hdr, vc);
408 struct vhdr_sha256 *vh = hdr_priv(hdr);
410 struct fio_sha256_ctx sha256_ctx = {
414 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
416 fio_sha256_init(&sha256_ctx);
417 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr));
419 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
423 vc->good_crc = vh->sha256;
424 vc->bad_crc = sha256_ctx.buf;
425 vc->crc_len = sizeof(vh->sha256);
426 log_verify_failure(hdr, vc);
430 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
432 void *p = io_u_verify_off(hdr, vc);
433 struct vhdr_sha1 *vh = hdr_priv(hdr);
435 struct fio_sha1_ctx sha1_ctx = {
439 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
441 fio_sha1_init(&sha1_ctx);
442 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr));
444 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
448 vc->good_crc = vh->sha1;
449 vc->bad_crc = sha1_ctx.H;
450 vc->crc_len = sizeof(vh->sha1);
451 log_verify_failure(hdr, vc);
455 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
457 void *p = io_u_verify_off(hdr, vc);
458 struct vhdr_crc7 *vh = hdr_priv(hdr);
461 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
463 c = fio_crc7(p, hdr->len - hdr_size(hdr));
469 vc->good_crc = &vh->crc7;
472 log_verify_failure(hdr, vc);
476 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
478 void *p = io_u_verify_off(hdr, vc);
479 struct vhdr_crc16 *vh = hdr_priv(hdr);
482 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
484 c = fio_crc16(p, hdr->len - hdr_size(hdr));
490 vc->good_crc = &vh->crc16;
493 log_verify_failure(hdr, vc);
497 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
499 void *p = io_u_verify_off(hdr, vc);
500 struct vhdr_crc64 *vh = hdr_priv(hdr);
501 unsigned long long c;
503 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
505 c = fio_crc64(p, hdr->len - hdr_size(hdr));
511 vc->good_crc = &vh->crc64;
514 log_verify_failure(hdr, vc);
518 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
520 void *p = io_u_verify_off(hdr, vc);
521 struct vhdr_crc32 *vh = hdr_priv(hdr);
524 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
526 c = fio_crc32(p, hdr->len - hdr_size(hdr));
532 vc->good_crc = &vh->crc32;
535 log_verify_failure(hdr, vc);
539 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
541 void *p = io_u_verify_off(hdr, vc);
542 struct vhdr_crc32 *vh = hdr_priv(hdr);
545 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
547 c = fio_crc32c(p, hdr->len - hdr_size(hdr));
553 vc->good_crc = &vh->crc32;
556 log_verify_failure(hdr, vc);
560 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
562 void *p = io_u_verify_off(hdr, vc);
563 struct vhdr_md5 *vh = hdr_priv(hdr);
564 uint32_t hash[MD5_HASH_WORDS];
565 struct fio_md5_ctx md5_ctx = {
569 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
571 fio_md5_init(&md5_ctx);
572 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr));
574 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
578 vc->good_crc = vh->md5_digest;
579 vc->bad_crc = md5_ctx.hash;
580 vc->crc_len = sizeof(hash);
581 log_verify_failure(hdr, vc);
586 * Push IO verification to a separate thread
588 int verify_io_u_async(struct thread_data *td, struct io_u *io_u)
591 put_file_log(td, io_u->file);
593 pthread_mutex_lock(&td->io_u_lock);
595 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
597 io_u->flags &= ~IO_U_F_IN_CUR_DEPTH;
599 flist_del(&io_u->list);
600 flist_add_tail(&io_u->list, &td->verify_list);
601 io_u->flags |= IO_U_F_FREE_DEF;
602 pthread_mutex_unlock(&td->io_u_lock);
604 pthread_cond_signal(&td->verify_cond);
608 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
610 static char zero_buf[1024];
611 unsigned int this_len, len;
615 if (!td->o.trim_zero)
621 this_len = sizeof(zero_buf);
624 if (memcmp(p, zero_buf, this_len)) {
635 log_err("trim: verify failed at file %s offset %llu, length %lu"
636 ", block offset %lu\n",
637 io_u->file->file_name, io_u->offset, io_u->buflen,
638 (unsigned long) (p - io_u->buf));
642 static int verify_header(struct io_u *io_u, struct verify_header *hdr)
647 if (hdr->magic != FIO_HDR_MAGIC)
649 if (hdr->len > io_u->buflen) {
650 log_err("fio: verify header exceeds buffer length (%u > %lu)\n", hdr->len, io_u->buflen);
654 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
655 if (crc == hdr->crc32)
658 log_err("fio: verify header crc %x, calculated %x\n", hdr->crc32, crc);
662 int verify_io_u(struct thread_data *td, struct io_u *io_u)
664 struct verify_header *hdr;
665 unsigned int header_size, hdr_inc, hdr_num = 0;
669 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
671 if (io_u->flags & IO_U_F_TRIMMED) {
672 ret = verify_trimmed_io_u(td, io_u);
676 hdr_inc = get_hdr_inc(td, io_u);
679 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
680 p += hdr_inc, hdr_num++) {
686 unsigned int verify_type;
688 if (ret && td->o.verify_fatal)
691 header_size = __hdr_size(td->o.verify);
692 if (td->o.verify_offset)
693 memswp(p, p + td->o.verify_offset, header_size);
696 if (!verify_header(io_u, hdr)) {
697 log_err("verify: bad magic header %x, wanted %x at "
698 "file %s offset %llu, length %u\n",
699 hdr->magic, FIO_HDR_MAGIC,
700 io_u->file->file_name,
701 io_u->offset + hdr_num * hdr->len, hdr->len);
705 if (td->o.verify != VERIFY_NONE)
706 verify_type = td->o.verify;
708 verify_type = hdr->verify_type;
710 switch (verify_type) {
712 ret = verify_io_u_md5(hdr, &vc);
715 ret = verify_io_u_crc64(hdr, &vc);
718 case VERIFY_CRC32C_INTEL:
719 ret = verify_io_u_crc32c(hdr, &vc);
722 ret = verify_io_u_crc32(hdr, &vc);
725 ret = verify_io_u_crc16(hdr, &vc);
728 ret = verify_io_u_crc7(hdr, &vc);
731 ret = verify_io_u_sha256(hdr, &vc);
734 ret = verify_io_u_sha512(hdr, &vc);
737 ret = verify_io_u_meta(hdr, &vc);
740 ret = verify_io_u_sha1(hdr, &vc);
743 ret = verify_io_u_pattern(hdr, &vc);
746 log_err("Bad verify type %u\n", hdr->verify_type);
750 if (ret && verify_type != hdr->verify_type)
751 log_err("fio: verify type mismatch (%u media, %u given)\n",
752 hdr->verify_type, verify_type);
756 if (ret && td->o.verify_fatal)
762 static void fill_meta(struct verify_header *hdr, struct thread_data *td,
763 struct io_u *io_u, unsigned int header_num)
765 struct vhdr_meta *vh = hdr_priv(hdr);
767 vh->thread = td->thread_number;
769 vh->time_sec = io_u->start_time.tv_sec;
770 vh->time_usec = io_u->start_time.tv_usec;
772 vh->numberio = td->io_issues[DDIR_WRITE];
774 vh->offset = io_u->offset + header_num * td->o.verify_interval;
777 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
779 struct vhdr_sha512 *vh = hdr_priv(hdr);
780 struct fio_sha512_ctx sha512_ctx = {
784 fio_sha512_init(&sha512_ctx);
785 fio_sha512_update(&sha512_ctx, p, len);
788 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
790 struct vhdr_sha256 *vh = hdr_priv(hdr);
791 struct fio_sha256_ctx sha256_ctx = {
795 fio_sha256_init(&sha256_ctx);
796 fio_sha256_update(&sha256_ctx, p, len);
799 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
801 struct vhdr_sha1 *vh = hdr_priv(hdr);
802 struct fio_sha1_ctx sha1_ctx = {
806 fio_sha1_init(&sha1_ctx);
807 fio_sha1_update(&sha1_ctx, p, len);
810 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
812 struct vhdr_crc7 *vh = hdr_priv(hdr);
814 vh->crc7 = fio_crc7(p, len);
817 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
819 struct vhdr_crc16 *vh = hdr_priv(hdr);
821 vh->crc16 = fio_crc16(p, len);
824 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
826 struct vhdr_crc32 *vh = hdr_priv(hdr);
828 vh->crc32 = fio_crc32(p, len);
831 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
833 struct vhdr_crc32 *vh = hdr_priv(hdr);
835 vh->crc32 = fio_crc32c(p, len);
838 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
840 struct vhdr_crc64 *vh = hdr_priv(hdr);
842 vh->crc64 = fio_crc64(p, len);
845 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
847 struct vhdr_md5 *vh = hdr_priv(hdr);
848 struct fio_md5_ctx md5_ctx = {
849 .hash = (uint32_t *) vh->md5_digest,
852 fio_md5_init(&md5_ctx);
853 fio_md5_update(&md5_ctx, p, len);
856 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
857 struct verify_header *hdr, unsigned int header_num,
858 unsigned int header_len)
860 unsigned int data_len;
865 hdr->magic = FIO_HDR_MAGIC;
866 hdr->verify_type = td->o.verify;
867 hdr->len = header_len;
868 hdr->rand_seed = io_u->rand_seed;
869 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
871 data_len = header_len - hdr_size(hdr);
873 data = p + hdr_size(hdr);
874 switch (td->o.verify) {
876 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
878 fill_md5(hdr, data, data_len);
881 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
883 fill_crc64(hdr, data, data_len);
886 case VERIFY_CRC32C_INTEL:
887 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
889 fill_crc32c(hdr, data, data_len);
892 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
894 fill_crc32(hdr, data, data_len);
897 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
899 fill_crc16(hdr, data, data_len);
902 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
904 fill_crc7(hdr, data, data_len);
907 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
909 fill_sha256(hdr, data, data_len);
912 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
914 fill_sha512(hdr, data, data_len);
917 dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
919 fill_meta(hdr, td, io_u, header_num);
922 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
924 fill_sha1(hdr, data, data_len);
927 /* nothing to do here */
930 log_err("fio: bad verify type: %d\n", td->o.verify);
933 if (td->o.verify_offset)
934 memswp(p, p + td->o.verify_offset, hdr_size(hdr));
938 * fill body of io_u->buf with random data and add a header with the
941 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
943 if (td->o.verify == VERIFY_NULL)
946 fill_pattern_headers(td, io_u, 0, 0);
949 int get_next_verify(struct thread_data *td, struct io_u *io_u)
951 struct io_piece *ipo = NULL;
954 * this io_u is from a requeue, we already filled the offsets
959 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
960 struct rb_node *n = rb_first(&td->io_hist_tree);
962 ipo = rb_entry(n, struct io_piece, rb_node);
963 rb_erase(n, &td->io_hist_tree);
964 assert(ipo->flags & IP_F_ONRB);
965 ipo->flags &= ~IP_F_ONRB;
966 } else if (!flist_empty(&td->io_hist_list)) {
967 ipo = flist_entry(td->io_hist_list.next, struct io_piece, list);
968 flist_del(&ipo->list);
969 assert(ipo->flags & IP_F_ONLIST);
970 ipo->flags &= ~IP_F_ONLIST;
976 io_u->offset = ipo->offset;
977 io_u->buflen = ipo->len;
978 io_u->file = ipo->file;
979 io_u->flags |= IO_U_F_VER_LIST;
981 if (ipo->flags & IP_F_TRIMMED)
982 io_u->flags |= IO_U_F_TRIMMED;
984 if (!fio_file_open(io_u->file)) {
985 int r = td_io_open_file(td, io_u->file);
988 dprint(FD_VERIFY, "failed file %s open\n",
989 io_u->file->file_name);
995 assert(fio_file_open(io_u->file));
996 io_u->ddir = DDIR_READ;
997 io_u->xfer_buf = io_u->buf;
998 io_u->xfer_buflen = io_u->buflen;
1000 remove_trim_entry(td, ipo);
1002 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1006 dprint(FD_VERIFY, "get_next_verify: empty\n");
1010 static void *verify_async_thread(void *data)
1012 struct thread_data *td = data;
1016 if (td->o.verify_cpumask_set &&
1017 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1018 log_err("fio: failed setting verify thread affinity\n");
1026 if (td->verify_thread_exit)
1029 pthread_mutex_lock(&td->io_u_lock);
1031 while (flist_empty(&td->verify_list) &&
1032 !td->verify_thread_exit) {
1033 ret = pthread_cond_wait(&td->verify_cond,
1036 pthread_mutex_unlock(&td->io_u_lock);
1041 flist_splice_init(&td->verify_list, &list);
1042 pthread_mutex_unlock(&td->io_u_lock);
1044 if (flist_empty(&list))
1047 while (!flist_empty(&list)) {
1048 io_u = flist_entry(list.next, struct io_u, list);
1049 flist_del_init(&io_u->list);
1051 ret = verify_io_u(td, io_u);
1055 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1056 update_error_count(td, ret);
1064 td_verror(td, ret, "async_verify");
1065 if (td->o.verify_fatal)
1070 pthread_mutex_lock(&td->io_u_lock);
1071 td->nr_verify_threads--;
1072 pthread_mutex_unlock(&td->io_u_lock);
1074 pthread_cond_signal(&td->free_cond);
1078 int verify_async_init(struct thread_data *td)
1081 pthread_attr_t attr;
1083 pthread_attr_init(&attr);
1084 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1086 td->verify_thread_exit = 0;
1088 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1089 for (i = 0; i < td->o.verify_async; i++) {
1090 ret = pthread_create(&td->verify_threads[i], &attr,
1091 verify_async_thread, td);
1093 log_err("fio: async verify creation failed: %s\n",
1097 ret = pthread_detach(td->verify_threads[i]);
1099 log_err("fio: async verify thread detach failed: %s\n",
1103 td->nr_verify_threads++;
1106 pthread_attr_destroy(&attr);
1108 if (i != td->o.verify_async) {
1109 log_err("fio: only %d verify threads started, exiting\n", i);
1110 td->verify_thread_exit = 1;
1112 pthread_cond_broadcast(&td->verify_cond);
1119 void verify_async_exit(struct thread_data *td)
1121 td->verify_thread_exit = 1;
1123 pthread_cond_broadcast(&td->verify_cond);
1125 pthread_mutex_lock(&td->io_u_lock);
1127 while (td->nr_verify_threads)
1128 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1130 pthread_mutex_unlock(&td->io_u_lock);
1131 free(td->verify_threads);
1132 td->verify_threads = NULL;