2 * IO verification helpers
15 #include "lib/hweight.h"
16 #include "lib/pattern.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"
27 #include "crc/xxhash.h"
29 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
30 struct verify_header *hdr, unsigned int header_num,
31 unsigned int header_len);
32 static void fill_hdr(struct thread_data *td, struct io_u *io_u,
33 struct verify_header *hdr, unsigned int header_num,
34 unsigned int header_len, uint64_t rand_seed);
35 static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
36 struct verify_header *hdr, unsigned int header_num,
37 unsigned int header_len, uint64_t rand_seed);
39 void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len)
41 (void)cpy_pattern(td->o.buffer_pattern, td->o.buffer_pattern_bytes, p, len);
44 void __fill_buffer(struct thread_options *o, unsigned long seed, void *p,
47 __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
50 unsigned long fill_buffer(struct thread_data *td, void *p, unsigned int len)
52 struct frand_state *fs = &td->verify_state;
53 struct thread_options *o = &td->o;
55 return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
58 void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
59 struct io_u *io_u, unsigned long seed, int use_seed)
61 struct thread_options *o = &td->o;
63 if (!o->verify_pattern_bytes) {
64 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
67 __fill_buffer(o, seed, p, len);
69 io_u->rand_seed = fill_buffer(td, p, len);
73 /* Skip if we were here and we do not need to patch pattern
75 if (!td->o.verify_fmt_sz && io_u->buf_filled_len >= len) {
76 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
77 o->verify_pattern_bytes, len);
81 (void)paste_format(td->o.verify_pattern, td->o.verify_pattern_bytes,
82 td->o.verify_fmt, td->o.verify_fmt_sz,
84 io_u->buf_filled_len = len;
87 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
91 hdr_inc = io_u->buflen;
92 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
93 hdr_inc = td->o.verify_interval;
98 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
99 unsigned long seed, int use_seed)
101 unsigned int hdr_inc, header_num;
102 struct verify_header *hdr;
105 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
107 hdr_inc = get_hdr_inc(td, io_u);
109 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
111 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
116 static void memswp(void *buf1, void *buf2, unsigned int len)
120 assert(len <= sizeof(swap));
122 memcpy(&swap, buf1, len);
123 memcpy(buf1, buf2, len);
124 memcpy(buf2, &swap, len);
127 static void hexdump(void *buffer, int len)
129 unsigned char *p = buffer;
132 for (i = 0; i < len; i++)
133 log_err("%02x", p[i]);
138 * Prepare for separation of verify_header and checksum header
140 static inline unsigned int __hdr_size(int verify_type)
142 unsigned int len = 0;
144 switch (verify_type) {
146 case VERIFY_HDR_ONLY:
152 len = sizeof(struct vhdr_md5);
155 len = sizeof(struct vhdr_crc64);
159 case VERIFY_CRC32C_INTEL:
160 len = sizeof(struct vhdr_crc32);
163 len = sizeof(struct vhdr_crc16);
166 len = sizeof(struct vhdr_crc7);
169 len = sizeof(struct vhdr_sha256);
172 len = sizeof(struct vhdr_sha512);
175 len = sizeof(struct vhdr_xxhash);
178 len = sizeof(struct vhdr_sha1);
180 case VERIFY_PATTERN_NO_HDR:
183 log_err("fio: unknown verify header!\n");
187 return len + sizeof(struct verify_header);
190 static inline unsigned int hdr_size(struct thread_data *td,
191 struct verify_header *hdr)
193 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
196 return __hdr_size(hdr->verify_type);
199 static void *hdr_priv(struct verify_header *hdr)
203 return priv + sizeof(struct verify_header);
207 * Verify container, pass info to verify handlers and allow them to
208 * pass info back in case of error
215 unsigned int hdr_num;
216 struct thread_data *td;
219 * Output, only valid in case of error
224 unsigned int crc_len;
227 #define DUMP_BUF_SZ 255
228 static int dump_buf_warned;
230 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
231 const char *type, struct fio_file *f)
233 char *ptr, fname[DUMP_BUF_SZ];
234 size_t buf_left = DUMP_BUF_SZ;
237 ptr = strdup(f->file_name);
239 memset(fname, 0, sizeof(fname));
241 sprintf(fname, "%s%s", aux_path, FIO_OS_PATH_SEPARATOR);
243 strncpy(fname + strlen(fname), basename(ptr), buf_left - 1);
245 buf_left -= strlen(fname);
247 if (!dump_buf_warned) {
248 log_err("fio: verify failure dump buffer too small\n");
255 snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type);
257 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
259 perror("open verify buf file");
264 ret = write(fd, buf, len);
268 perror("write verify buf file");
276 log_err(" %s data dumped as %s\n", type, fname);
281 * Dump the contents of the read block and re-generate the correct data
284 static void __dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
286 struct thread_data *td = vc->td;
287 struct io_u *io_u = vc->io_u;
288 unsigned long hdr_offset;
292 if (!td->o.verify_dump)
296 * Dump the contents we just read off disk
298 hdr_offset = vc->hdr_num * hdr->len;
300 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
301 "received", vc->io_u->file);
304 * Allocate a new buf and re-generate the original data
306 buf = malloc(io_u->buflen);
309 dummy.rand_seed = hdr->rand_seed;
310 dummy.buf_filled_len = 0;
311 dummy.buflen = io_u->buflen;
313 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
315 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
316 "expected", vc->io_u->file);
320 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
322 struct thread_data *td = vc->td;
323 struct verify_header shdr;
325 if (td->o.verify == VERIFY_PATTERN_NO_HDR) {
326 __fill_hdr(td, vc->io_u, &shdr, 0, vc->io_u->buflen, 0);
330 __dump_verify_buffers(hdr, vc);
333 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
335 unsigned long long offset;
337 offset = vc->io_u->offset;
338 offset += vc->hdr_num * hdr->len;
339 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
340 vc->name, vc->io_u->file->file_name, offset, hdr->len);
342 if (vc->good_crc && vc->bad_crc) {
343 log_err(" Expected CRC: ");
344 hexdump(vc->good_crc, vc->crc_len);
345 log_err(" Received CRC: ");
346 hexdump(vc->bad_crc, vc->crc_len);
349 dump_verify_buffers(hdr, vc);
353 * Return data area 'header_num'
355 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
357 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(vc->td, hdr);
360 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
362 struct thread_data *td = vc->td;
363 struct io_u *io_u = vc->io_u;
365 unsigned int header_size = __hdr_size(td->o.verify);
366 unsigned int len, mod, i, pattern_size;
369 pattern = td->o.verify_pattern;
370 pattern_size = td->o.verify_pattern_bytes;
371 assert(pattern_size != 0);
373 (void)paste_format_inplace(pattern, pattern_size,
374 td->o.verify_fmt, td->o.verify_fmt_sz, io_u);
376 buf = (void *) hdr + header_size;
377 len = get_hdr_inc(td, io_u) - header_size;
378 mod = (get_hdr_inc(td, io_u) * vc->hdr_num + header_size) % pattern_size;
380 rc = cmp_pattern(pattern, pattern_size, mod, buf, len);
384 /* Slow path, compare each byte */
385 for (i = 0; i < len; i++) {
386 if (buf[i] != pattern[mod]) {
389 bits = hweight8(buf[i] ^ pattern[mod]);
390 log_err("fio: got pattern '%02x', wanted '%02x'. Bad bits %d\n",
391 (unsigned char)buf[i],
392 (unsigned char)pattern[mod],
394 log_err("fio: bad pattern block offset %u\n", i);
395 dump_verify_buffers(hdr, vc);
399 if (mod == td->o.verify_pattern_bytes)
403 /* Unreachable line */
408 static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
410 void *p = io_u_verify_off(hdr, vc);
411 struct vhdr_xxhash *vh = hdr_priv(hdr);
415 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
417 state = XXH32_init(1);
418 XXH32_update(state, p, hdr->len - hdr_size(vc->td, hdr));
419 hash = XXH32_digest(state);
421 if (vh->hash == hash)
425 vc->good_crc = &vh->hash;
427 vc->crc_len = sizeof(hash);
428 log_verify_failure(hdr, vc);
432 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
434 void *p = io_u_verify_off(hdr, vc);
435 struct vhdr_sha512 *vh = hdr_priv(hdr);
437 struct fio_sha512_ctx sha512_ctx = {
441 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
443 fio_sha512_init(&sha512_ctx);
444 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(vc->td, hdr));
446 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
450 vc->good_crc = vh->sha512;
451 vc->bad_crc = sha512_ctx.buf;
452 vc->crc_len = sizeof(vh->sha512);
453 log_verify_failure(hdr, vc);
457 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
459 void *p = io_u_verify_off(hdr, vc);
460 struct vhdr_sha256 *vh = hdr_priv(hdr);
462 struct fio_sha256_ctx sha256_ctx = {
466 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
468 fio_sha256_init(&sha256_ctx);
469 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(vc->td, hdr));
470 fio_sha256_final(&sha256_ctx);
472 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
476 vc->good_crc = vh->sha256;
477 vc->bad_crc = sha256_ctx.buf;
478 vc->crc_len = sizeof(vh->sha256);
479 log_verify_failure(hdr, vc);
483 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
485 void *p = io_u_verify_off(hdr, vc);
486 struct vhdr_sha1 *vh = hdr_priv(hdr);
488 struct fio_sha1_ctx sha1_ctx = {
492 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
494 fio_sha1_init(&sha1_ctx);
495 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(vc->td, hdr));
496 fio_sha1_final(&sha1_ctx);
498 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
502 vc->good_crc = vh->sha1;
503 vc->bad_crc = sha1_ctx.H;
504 vc->crc_len = sizeof(vh->sha1);
505 log_verify_failure(hdr, vc);
509 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
511 void *p = io_u_verify_off(hdr, vc);
512 struct vhdr_crc7 *vh = hdr_priv(hdr);
515 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
517 c = fio_crc7(p, hdr->len - hdr_size(vc->td, hdr));
523 vc->good_crc = &vh->crc7;
526 log_verify_failure(hdr, vc);
530 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
532 void *p = io_u_verify_off(hdr, vc);
533 struct vhdr_crc16 *vh = hdr_priv(hdr);
536 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
538 c = fio_crc16(p, hdr->len - hdr_size(vc->td, hdr));
544 vc->good_crc = &vh->crc16;
547 log_verify_failure(hdr, vc);
551 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
553 void *p = io_u_verify_off(hdr, vc);
554 struct vhdr_crc64 *vh = hdr_priv(hdr);
555 unsigned long long c;
557 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
559 c = fio_crc64(p, hdr->len - hdr_size(vc->td, hdr));
565 vc->good_crc = &vh->crc64;
568 log_verify_failure(hdr, vc);
572 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
574 void *p = io_u_verify_off(hdr, vc);
575 struct vhdr_crc32 *vh = hdr_priv(hdr);
578 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
580 c = fio_crc32(p, hdr->len - hdr_size(vc->td, hdr));
586 vc->good_crc = &vh->crc32;
589 log_verify_failure(hdr, vc);
593 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
595 void *p = io_u_verify_off(hdr, vc);
596 struct vhdr_crc32 *vh = hdr_priv(hdr);
599 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
601 c = fio_crc32c(p, hdr->len - hdr_size(vc->td, hdr));
607 vc->good_crc = &vh->crc32;
610 log_verify_failure(hdr, vc);
614 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
616 void *p = io_u_verify_off(hdr, vc);
617 struct vhdr_md5 *vh = hdr_priv(hdr);
618 uint32_t hash[MD5_HASH_WORDS];
619 struct fio_md5_ctx md5_ctx = {
623 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
625 fio_md5_init(&md5_ctx);
626 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(vc->td, hdr));
627 fio_md5_final(&md5_ctx);
629 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
633 vc->good_crc = vh->md5_digest;
634 vc->bad_crc = md5_ctx.hash;
635 vc->crc_len = sizeof(hash);
636 log_verify_failure(hdr, vc);
641 * Push IO verification to a separate thread
643 int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
645 struct io_u *io_u = *io_u_ptr;
647 pthread_mutex_lock(&td->io_u_lock);
650 put_file_log(td, io_u->file);
652 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
654 io_u_clear(io_u, IO_U_F_IN_CUR_DEPTH);
656 flist_add_tail(&io_u->verify_list, &td->verify_list);
658 pthread_mutex_unlock(&td->io_u_lock);
660 pthread_cond_signal(&td->verify_cond);
665 * Thanks Rusty, for spending the time so I don't have to.
667 * http://rusty.ozlabs.org/?p=560
669 static int mem_is_zero(const void *data, size_t length)
671 const unsigned char *p = data;
674 /* Check first 16 bytes manually */
675 for (len = 0; len < 16; len++) {
684 /* Now we know that's zero, memcmp with self. */
685 return memcmp(data, p, length) == 0;
688 static int mem_is_zero_slow(const void *data, size_t length, size_t *offset)
690 const unsigned char *p = data;
704 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
708 if (!td->o.trim_zero)
711 if (mem_is_zero(io_u->buf, io_u->buflen))
714 mem_is_zero_slow(io_u->buf, io_u->buflen, &offset);
716 log_err("trim: verify failed at file %s offset %llu, length %lu"
717 ", block offset %lu\n",
718 io_u->file->file_name, io_u->offset, io_u->buflen,
719 (unsigned long) offset);
723 static int verify_header(struct io_u *io_u, struct thread_data *td,
724 struct verify_header *hdr, unsigned int hdr_num,
725 unsigned int hdr_len)
730 if (hdr->magic != FIO_HDR_MAGIC) {
731 log_err("verify: bad magic header %x, wanted %x",
732 hdr->magic, FIO_HDR_MAGIC);
735 if (hdr->len != hdr_len) {
736 log_err("verify: bad header length %u, wanted %u",
740 if (hdr->rand_seed != io_u->rand_seed) {
741 log_err("verify: bad header rand_seed %"PRIu64
743 hdr->rand_seed, io_u->rand_seed);
746 if (hdr->offset != io_u->offset + hdr_num * td->o.verify_interval) {
747 log_err("verify: bad header offset %"PRIu64
749 hdr->offset, io_u->offset);
754 * For read-only workloads, the program cannot be certain of the
755 * last numberio written to a block. Checking of numberio will be
756 * done only for workloads that write data. For verify_only,
757 * numberio will be checked in the last iteration when the correct
758 * state of numberio, that would have been written to each block
759 * in a previous run of fio, has been reached.
761 if ((td_write(td) || td_rw(td)) && (td_min_bs(td) == td_max_bs(td)) &&
763 if (!td->o.verify_only || td->o.loops == 0)
764 if (hdr->numberio != io_u->numberio) {
765 log_err("verify: bad header numberio %"PRIu16
767 hdr->numberio, io_u->numberio);
771 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
772 if (crc != hdr->crc32) {
773 log_err("verify: bad header crc %x, calculated %x",
780 log_err(" at file %s offset %llu, length %u\n",
781 io_u->file->file_name,
782 io_u->offset + hdr_num * hdr_len, hdr_len);
784 if (td->o.verify_dump)
785 dump_buf(p, hdr_len, io_u->offset + hdr_num * hdr_len,
786 "hdr_fail", io_u->file);
791 int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
793 struct verify_header *hdr;
794 struct io_u *io_u = *io_u_ptr;
795 unsigned int header_size, hdr_inc, hdr_num = 0;
799 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
802 * If the IO engine is faking IO (like null), then just pretend
803 * we verified everything.
805 if (td->io_ops->flags & FIO_FAKEIO)
808 if (io_u->flags & IO_U_F_TRIMMED) {
809 ret = verify_trimmed_io_u(td, io_u);
813 hdr_inc = get_hdr_inc(td, io_u);
816 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
817 p += hdr_inc, hdr_num++) {
823 unsigned int verify_type;
825 if (ret && td->o.verify_fatal)
828 header_size = __hdr_size(td->o.verify);
829 if (td->o.verify_offset)
830 memswp(p, p + td->o.verify_offset, header_size);
834 * Make rand_seed check pass when have verifysort or
837 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
838 io_u->rand_seed = hdr->rand_seed;
840 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
841 ret = verify_header(io_u, td, hdr, hdr_num, hdr_inc);
846 if (td->o.verify != VERIFY_NONE)
847 verify_type = td->o.verify;
849 verify_type = hdr->verify_type;
851 switch (verify_type) {
852 case VERIFY_HDR_ONLY:
853 /* Header is always verified, check if pattern is left
854 * for verification. */
855 if (td->o.verify_pattern_bytes)
856 ret = verify_io_u_pattern(hdr, &vc);
859 ret = verify_io_u_md5(hdr, &vc);
862 ret = verify_io_u_crc64(hdr, &vc);
865 case VERIFY_CRC32C_INTEL:
866 ret = verify_io_u_crc32c(hdr, &vc);
869 ret = verify_io_u_crc32(hdr, &vc);
872 ret = verify_io_u_crc16(hdr, &vc);
875 ret = verify_io_u_crc7(hdr, &vc);
878 ret = verify_io_u_sha256(hdr, &vc);
881 ret = verify_io_u_sha512(hdr, &vc);
884 ret = verify_io_u_xxhash(hdr, &vc);
887 ret = verify_io_u_sha1(hdr, &vc);
890 case VERIFY_PATTERN_NO_HDR:
891 ret = verify_io_u_pattern(hdr, &vc);
894 log_err("Bad verify type %u\n", hdr->verify_type);
898 if (ret && verify_type != hdr->verify_type)
899 log_err("fio: verify type mismatch (%u media, %u given)\n",
900 hdr->verify_type, verify_type);
904 if (ret && td->o.verify_fatal)
905 fio_mark_td_terminate(td);
910 static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
912 struct vhdr_xxhash *vh = hdr_priv(hdr);
915 state = XXH32_init(1);
916 XXH32_update(state, p, len);
917 vh->hash = XXH32_digest(state);
920 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
922 struct vhdr_sha512 *vh = hdr_priv(hdr);
923 struct fio_sha512_ctx sha512_ctx = {
927 fio_sha512_init(&sha512_ctx);
928 fio_sha512_update(&sha512_ctx, p, len);
931 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
933 struct vhdr_sha256 *vh = hdr_priv(hdr);
934 struct fio_sha256_ctx sha256_ctx = {
938 fio_sha256_init(&sha256_ctx);
939 fio_sha256_update(&sha256_ctx, p, len);
940 fio_sha256_final(&sha256_ctx);
943 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
945 struct vhdr_sha1 *vh = hdr_priv(hdr);
946 struct fio_sha1_ctx sha1_ctx = {
950 fio_sha1_init(&sha1_ctx);
951 fio_sha1_update(&sha1_ctx, p, len);
952 fio_sha1_final(&sha1_ctx);
955 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
957 struct vhdr_crc7 *vh = hdr_priv(hdr);
959 vh->crc7 = fio_crc7(p, len);
962 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
964 struct vhdr_crc16 *vh = hdr_priv(hdr);
966 vh->crc16 = fio_crc16(p, len);
969 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
971 struct vhdr_crc32 *vh = hdr_priv(hdr);
973 vh->crc32 = fio_crc32(p, len);
976 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
978 struct vhdr_crc32 *vh = hdr_priv(hdr);
980 vh->crc32 = fio_crc32c(p, len);
983 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
985 struct vhdr_crc64 *vh = hdr_priv(hdr);
987 vh->crc64 = fio_crc64(p, len);
990 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
992 struct vhdr_md5 *vh = hdr_priv(hdr);
993 struct fio_md5_ctx md5_ctx = {
994 .hash = (uint32_t *) vh->md5_digest,
997 fio_md5_init(&md5_ctx);
998 fio_md5_update(&md5_ctx, p, len);
999 fio_md5_final(&md5_ctx);
1002 static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
1003 struct verify_header *hdr, unsigned int header_num,
1004 unsigned int header_len, uint64_t rand_seed)
1008 hdr->magic = FIO_HDR_MAGIC;
1009 hdr->verify_type = td->o.verify;
1010 hdr->len = header_len;
1011 hdr->rand_seed = rand_seed;
1012 hdr->offset = io_u->offset + header_num * td->o.verify_interval;
1013 hdr->time_sec = io_u->start_time.tv_sec;
1014 hdr->time_usec = io_u->start_time.tv_usec;
1015 hdr->thread = td->thread_number;
1016 hdr->numberio = io_u->numberio;
1017 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
1021 static void fill_hdr(struct thread_data *td, struct io_u *io_u,
1022 struct verify_header *hdr, unsigned int header_num,
1023 unsigned int header_len, uint64_t rand_seed)
1026 if (td->o.verify != VERIFY_PATTERN_NO_HDR)
1027 __fill_hdr(td, io_u, hdr, header_num, header_len, rand_seed);
1030 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
1031 struct verify_header *hdr, unsigned int header_num,
1032 unsigned int header_len)
1034 unsigned int data_len;
1039 fill_hdr(td, io_u, hdr, header_num, header_len, io_u->rand_seed);
1041 data_len = header_len - hdr_size(td, hdr);
1043 data = p + hdr_size(td, hdr);
1044 switch (td->o.verify) {
1046 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
1048 fill_md5(hdr, data, data_len);
1051 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1053 fill_crc64(hdr, data, data_len);
1056 case VERIFY_CRC32C_INTEL:
1057 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1059 fill_crc32c(hdr, data, data_len);
1062 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1064 fill_crc32(hdr, data, data_len);
1067 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1069 fill_crc16(hdr, data, data_len);
1072 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1074 fill_crc7(hdr, data, data_len);
1077 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1079 fill_sha256(hdr, data, data_len);
1082 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1084 fill_sha512(hdr, data, data_len);
1087 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1089 fill_xxhash(hdr, data, data_len);
1092 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1094 fill_sha1(hdr, data, data_len);
1096 case VERIFY_HDR_ONLY:
1097 case VERIFY_PATTERN:
1098 case VERIFY_PATTERN_NO_HDR:
1099 /* nothing to do here */
1102 log_err("fio: bad verify type: %d\n", td->o.verify);
1106 if (td->o.verify_offset && hdr_size(td, hdr))
1107 memswp(p, p + td->o.verify_offset, hdr_size(td, hdr));
1111 * fill body of io_u->buf with random data and add a header with the
1112 * checksum of choice
1114 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1116 if (td->o.verify == VERIFY_NULL)
1119 io_u->numberio = td->io_issues[io_u->ddir];
1121 fill_pattern_headers(td, io_u, 0, 0);
1124 int get_next_verify(struct thread_data *td, struct io_u *io_u)
1126 struct io_piece *ipo = NULL;
1129 * this io_u is from a requeue, we already filled the offsets
1134 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1135 struct rb_node *n = rb_first(&td->io_hist_tree);
1137 ipo = rb_entry(n, struct io_piece, rb_node);
1140 * Ensure that the associated IO has completed
1143 if (ipo->flags & IP_F_IN_FLIGHT)
1146 rb_erase(n, &td->io_hist_tree);
1147 assert(ipo->flags & IP_F_ONRB);
1148 ipo->flags &= ~IP_F_ONRB;
1149 } else if (!flist_empty(&td->io_hist_list)) {
1150 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1153 * Ensure that the associated IO has completed
1156 if (ipo->flags & IP_F_IN_FLIGHT)
1159 flist_del(&ipo->list);
1160 assert(ipo->flags & IP_F_ONLIST);
1161 ipo->flags &= ~IP_F_ONLIST;
1167 io_u->offset = ipo->offset;
1168 io_u->buflen = ipo->len;
1169 io_u->numberio = ipo->numberio;
1170 io_u->file = ipo->file;
1171 io_u_set(io_u, IO_U_F_VER_LIST);
1173 if (ipo->flags & IP_F_TRIMMED)
1174 io_u_set(io_u, IO_U_F_TRIMMED);
1176 if (!fio_file_open(io_u->file)) {
1177 int r = td_io_open_file(td, io_u->file);
1180 dprint(FD_VERIFY, "failed file %s open\n",
1181 io_u->file->file_name);
1186 get_file(ipo->file);
1187 assert(fio_file_open(io_u->file));
1188 io_u->ddir = DDIR_READ;
1189 io_u->xfer_buf = io_u->buf;
1190 io_u->xfer_buflen = io_u->buflen;
1192 remove_trim_entry(td, ipo);
1194 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1196 if (!td->o.verify_pattern_bytes) {
1197 io_u->rand_seed = __rand(&td->verify_state);
1198 if (sizeof(int) != sizeof(long *))
1199 io_u->rand_seed *= __rand(&td->verify_state);
1205 dprint(FD_VERIFY, "get_next_verify: empty\n");
1209 void fio_verify_init(struct thread_data *td)
1211 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1212 td->o.verify == VERIFY_CRC32C) {
1213 crc32c_intel_probe();
1217 static void *verify_async_thread(void *data)
1219 struct thread_data *td = data;
1223 if (fio_option_is_set(&td->o, verify_cpumask) &&
1224 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1225 log_err("fio: failed setting verify thread affinity\n");
1233 if (td->verify_thread_exit)
1236 pthread_mutex_lock(&td->io_u_lock);
1238 while (flist_empty(&td->verify_list) &&
1239 !td->verify_thread_exit) {
1240 ret = pthread_cond_wait(&td->verify_cond,
1243 pthread_mutex_unlock(&td->io_u_lock);
1248 flist_splice_init(&td->verify_list, &list);
1249 pthread_mutex_unlock(&td->io_u_lock);
1251 if (flist_empty(&list))
1254 while (!flist_empty(&list)) {
1255 io_u = flist_first_entry(&list, struct io_u, verify_list);
1256 flist_del_init(&io_u->verify_list);
1258 io_u_set(io_u, IO_U_F_NO_FILE_PUT);
1259 ret = verify_io_u(td, &io_u);
1264 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1265 update_error_count(td, ret);
1273 td_verror(td, ret, "async_verify");
1274 if (td->o.verify_fatal)
1275 fio_mark_td_terminate(td);
1279 pthread_mutex_lock(&td->io_u_lock);
1280 td->nr_verify_threads--;
1281 pthread_mutex_unlock(&td->io_u_lock);
1283 pthread_cond_signal(&td->free_cond);
1287 int verify_async_init(struct thread_data *td)
1290 pthread_attr_t attr;
1292 pthread_attr_init(&attr);
1293 pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
1295 td->verify_thread_exit = 0;
1297 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1298 for (i = 0; i < td->o.verify_async; i++) {
1299 ret = pthread_create(&td->verify_threads[i], &attr,
1300 verify_async_thread, td);
1302 log_err("fio: async verify creation failed: %s\n",
1306 ret = pthread_detach(td->verify_threads[i]);
1308 log_err("fio: async verify thread detach failed: %s\n",
1312 td->nr_verify_threads++;
1315 pthread_attr_destroy(&attr);
1317 if (i != td->o.verify_async) {
1318 log_err("fio: only %d verify threads started, exiting\n", i);
1319 td->verify_thread_exit = 1;
1321 pthread_cond_broadcast(&td->verify_cond);
1328 void verify_async_exit(struct thread_data *td)
1330 td->verify_thread_exit = 1;
1332 pthread_cond_broadcast(&td->verify_cond);
1334 pthread_mutex_lock(&td->io_u_lock);
1336 while (td->nr_verify_threads)
1337 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1339 pthread_mutex_unlock(&td->io_u_lock);
1340 free(td->verify_threads);
1341 td->verify_threads = NULL;
1344 int paste_blockoff(char *buf, unsigned int len, void *priv)
1346 struct io_u *io = priv;
1347 unsigned long long off;
1349 typecheck(typeof(off), io->offset);
1350 off = cpu_to_le64((uint64_t)io->offset);
1351 len = min(len, (unsigned int)sizeof(off));
1352 memcpy(buf, &off, len);
1356 static int __fill_file_completions(struct thread_data *td,
1357 struct thread_io_list *s,
1358 struct fio_file *f, unsigned int *index)
1363 if (!f->last_write_comp)
1366 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1367 comps = td->io_blocks[DDIR_WRITE];
1369 comps = td->o.iodepth;
1371 j = f->last_write_idx - 1;
1372 for (i = 0; i < comps; i++) {
1374 j = td->o.iodepth - 1;
1375 s->comps[*index].fileno = __cpu_to_le64(f->fileno);
1376 s->comps[*index].offset = cpu_to_le64(f->last_write_comp[j]);
1384 static int fill_file_completions(struct thread_data *td,
1385 struct thread_io_list *s, unsigned int *index)
1391 for_each_file(td, f, i)
1392 comps += __fill_file_completions(td, s, f, index);
1397 struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1399 struct all_io_list *rep;
1400 struct thread_data *td;
1405 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1408 * Calculate reply space needed. We need one 'io_state' per thread,
1409 * and the size will vary depending on depth.
1413 for_each_td(td, i) {
1414 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1417 td->flags |= TD_F_VSTATE_SAVED;
1418 depth += (td->o.iodepth * td->o.nr_files);
1426 *sz += nr * sizeof(struct thread_io_list);
1427 *sz += depth * sizeof(struct file_comp);
1429 memset(rep, 0, *sz);
1431 rep->threads = cpu_to_le64((uint64_t) nr);
1433 next = &rep->state[0];
1434 for_each_td(td, i) {
1435 struct thread_io_list *s = next;
1436 unsigned int comps, index = 0;
1438 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1441 comps = fill_file_completions(td, s, &index);
1443 s->no_comps = cpu_to_le64((uint64_t) comps);
1444 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1445 s->nofiles = cpu_to_le64((uint64_t) td->o.nr_files);
1446 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1447 s->index = cpu_to_le64((uint64_t) i);
1448 if (td->random_state.use64) {
1449 s->rand.state64.s[0] = cpu_to_le64(td->random_state.state64.s1);
1450 s->rand.state64.s[1] = cpu_to_le64(td->random_state.state64.s2);
1451 s->rand.state64.s[2] = cpu_to_le64(td->random_state.state64.s3);
1452 s->rand.state64.s[3] = cpu_to_le64(td->random_state.state64.s4);
1453 s->rand.state64.s[4] = cpu_to_le64(td->random_state.state64.s5);
1454 s->rand.state64.s[5] = 0;
1455 s->rand.use64 = cpu_to_le64((uint64_t)1);
1457 s->rand.state32.s[0] = cpu_to_le32(td->random_state.state32.s1);
1458 s->rand.state32.s[1] = cpu_to_le32(td->random_state.state32.s2);
1459 s->rand.state32.s[2] = cpu_to_le32(td->random_state.state32.s3);
1460 s->rand.state32.s[3] = 0;
1463 s->name[sizeof(s->name) - 1] = '\0';
1464 strncpy((char *) s->name, td->o.name, sizeof(s->name) - 1);
1465 next = io_list_next(s);
1471 static int open_state_file(const char *name, const char *prefix, int num,
1479 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1483 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1485 fd = open(out, flags, 0644);
1487 perror("fio: open state file");
1488 log_err("fio: state file: %s (for_write=%d)\n", out, for_write);
1495 static int write_thread_list_state(struct thread_io_list *s,
1498 struct verify_state_hdr hdr;
1503 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1507 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1509 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1510 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1511 hdr.crc = cpu_to_le64(crc);
1512 ret = write(fd, &hdr, sizeof(hdr));
1513 if (ret != sizeof(hdr))
1516 ret = write(fd, s, thread_io_list_sz(s));
1517 if (ret != thread_io_list_sz(s)) {
1520 perror("fio: write state file");
1521 log_err("fio: failed to write state file\n");
1530 void __verify_save_state(struct all_io_list *state, const char *prefix)
1532 struct thread_io_list *s = &state->state[0];
1535 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1536 write_thread_list_state(s, prefix);
1537 s = io_list_next(s);
1541 void verify_save_state(int mask)
1543 struct all_io_list *state;
1546 state = get_all_io_list(mask, &sz);
1548 char prefix[PATH_MAX];
1551 sprintf(prefix, "%s%slocal", aux_path, FIO_OS_PATH_SEPARATOR);
1553 strcpy(prefix, "local");
1555 __verify_save_state(state, prefix);
1560 void verify_free_state(struct thread_data *td)
1566 void verify_assign_state(struct thread_data *td, void *p)
1568 struct thread_io_list *s = p;
1571 s->no_comps = le64_to_cpu(s->no_comps);
1572 s->depth = le32_to_cpu(s->depth);
1573 s->nofiles = le32_to_cpu(s->nofiles);
1574 s->numberio = le64_to_cpu(s->numberio);
1575 s->rand.use64 = le64_to_cpu(s->rand.use64);
1577 if (s->rand.use64) {
1578 for (i = 0; i < 6; i++)
1579 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1581 for (i = 0; i < 4; i++)
1582 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1585 for (i = 0; i < s->no_comps; i++) {
1586 s->comps[i].fileno = le64_to_cpu(s->comps[i].fileno);
1587 s->comps[i].offset = le64_to_cpu(s->comps[i].offset);
1593 int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1597 hdr->version = le64_to_cpu(hdr->version);
1598 hdr->size = le64_to_cpu(hdr->size);
1599 hdr->crc = le64_to_cpu(hdr->crc);
1601 if (hdr->version != VSTATE_HDR_VERSION)
1604 crc = fio_crc32c((void *)s, hdr->size);
1605 if (crc != hdr->crc)
1611 int verify_load_state(struct thread_data *td, const char *prefix)
1613 struct verify_state_hdr hdr;
1619 if (!td->o.verify_state)
1622 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1626 ret = read(fd, &hdr, sizeof(hdr));
1627 if (ret != sizeof(hdr)) {
1629 td_verror(td, errno, "read verify state hdr");
1630 log_err("fio: failed reading verify state header\n");
1634 hdr.version = le64_to_cpu(hdr.version);
1635 hdr.size = le64_to_cpu(hdr.size);
1636 hdr.crc = le64_to_cpu(hdr.crc);
1638 if (hdr.version != VSTATE_HDR_VERSION) {
1639 log_err("fio: unsupported (%d) version in verify state header\n",
1640 (unsigned int) hdr.version);
1644 s = malloc(hdr.size);
1645 ret = read(fd, s, hdr.size);
1646 if (ret != hdr.size) {
1648 td_verror(td, errno, "read verify state");
1649 log_err("fio: failed reading verity state\n");
1653 crc = fio_crc32c(s, hdr.size);
1654 if (crc != hdr.crc) {
1655 log_err("fio: verify state is corrupt\n");
1661 verify_assign_state(td, s);
1671 * Use the loaded verify state to know when to stop doing verification
1673 int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1675 struct thread_io_list *s = td->vstate;
1676 struct fio_file *f = io_u->file;
1683 * If we're not into the window of issues - depth yet, continue. If
1684 * issue is shorter than depth, do check.
1686 if ((td->io_blocks[DDIR_READ] < s->depth ||
1687 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1688 s->numberio > s->depth)
1692 * We're in the window of having to check if this io was
1693 * completed or not. If the IO was seen as completed, then
1696 for (i = 0; i < s->no_comps; i++) {
1697 if (s->comps[i].fileno != f->fileno)
1699 if (io_u->offset == s->comps[i].offset)
1704 * Not found, we have to stop