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 static 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 static unsigned long fill_buffer(struct thread_data *td, void *p,
53 struct frand_state *fs = &td->verify_state;
54 struct thread_options *o = &td->o;
56 return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes);
59 void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len,
60 struct io_u *io_u, unsigned long seed, int use_seed)
62 struct thread_options *o = &td->o;
64 if (!o->verify_pattern_bytes) {
65 dprint(FD_VERIFY, "fill random bytes len=%u\n", len);
68 __fill_buffer(o, seed, p, len);
70 io_u->rand_seed = fill_buffer(td, p, len);
74 /* Skip if we were here and we do not need to patch pattern
76 if (!td->o.verify_fmt_sz && io_u->buf_filled_len >= len) {
77 dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n",
78 o->verify_pattern_bytes, len);
82 (void)paste_format(td->o.verify_pattern, td->o.verify_pattern_bytes,
83 td->o.verify_fmt, td->o.verify_fmt_sz,
85 io_u->buf_filled_len = len;
88 static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u)
92 hdr_inc = io_u->buflen;
93 if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen)
94 hdr_inc = td->o.verify_interval;
99 static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u,
100 unsigned long seed, int use_seed)
102 unsigned int hdr_inc, header_num;
103 struct verify_header *hdr;
106 fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed);
108 hdr_inc = get_hdr_inc(td, io_u);
110 for (; p < io_u->buf + io_u->buflen; p += hdr_inc) {
112 populate_hdr(td, io_u, hdr, header_num, hdr_inc);
117 static void memswp(void *buf1, void *buf2, unsigned int len)
121 assert(len <= sizeof(swap));
123 memcpy(&swap, buf1, len);
124 memcpy(buf1, buf2, len);
125 memcpy(buf2, &swap, len);
128 static void hexdump(void *buffer, int len)
130 unsigned char *p = buffer;
133 for (i = 0; i < len; i++)
134 log_err("%02x", p[i]);
139 * Prepare for separation of verify_header and checksum header
141 static inline unsigned int __hdr_size(int verify_type)
143 unsigned int len = 0;
145 switch (verify_type) {
147 case VERIFY_HDR_ONLY:
153 len = sizeof(struct vhdr_md5);
156 len = sizeof(struct vhdr_crc64);
160 case VERIFY_CRC32C_INTEL:
161 len = sizeof(struct vhdr_crc32);
164 len = sizeof(struct vhdr_crc16);
167 len = sizeof(struct vhdr_crc7);
170 len = sizeof(struct vhdr_sha256);
173 len = sizeof(struct vhdr_sha512);
176 len = sizeof(struct vhdr_xxhash);
179 len = sizeof(struct vhdr_sha1);
181 case VERIFY_PATTERN_NO_HDR:
184 log_err("fio: unknown verify header!\n");
188 return len + sizeof(struct verify_header);
191 static inline unsigned int hdr_size(struct thread_data *td,
192 struct verify_header *hdr)
194 if (td->o.verify == VERIFY_PATTERN_NO_HDR)
197 return __hdr_size(hdr->verify_type);
200 static void *hdr_priv(struct verify_header *hdr)
204 return priv + sizeof(struct verify_header);
208 * Verify container, pass info to verify handlers and allow them to
209 * pass info back in case of error
216 unsigned int hdr_num;
217 struct thread_data *td;
220 * Output, only valid in case of error
225 unsigned int crc_len;
228 #define DUMP_BUF_SZ 255
229 static int dump_buf_warned;
231 static void dump_buf(char *buf, unsigned int len, unsigned long long offset,
232 const char *type, struct fio_file *f)
234 char *ptr, fname[DUMP_BUF_SZ];
235 size_t buf_left = DUMP_BUF_SZ;
238 ptr = strdup(f->file_name);
240 memset(fname, 0, sizeof(fname));
242 sprintf(fname, "%s%s", aux_path, FIO_OS_PATH_SEPARATOR);
244 strncpy(fname + strlen(fname), basename(ptr), buf_left - 1);
246 buf_left -= strlen(fname);
248 if (!dump_buf_warned) {
249 log_err("fio: verify failure dump buffer too small\n");
256 snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type);
258 fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644);
260 perror("open verify buf file");
265 ret = write(fd, buf, len);
269 perror("write verify buf file");
277 log_err(" %s data dumped as %s\n", type, fname);
282 * Dump the contents of the read block and re-generate the correct data
285 static void __dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
287 struct thread_data *td = vc->td;
288 struct io_u *io_u = vc->io_u;
289 unsigned long hdr_offset;
293 if (!td->o.verify_dump)
297 * Dump the contents we just read off disk
299 hdr_offset = vc->hdr_num * hdr->len;
301 dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
302 "received", vc->io_u->file);
305 * Allocate a new buf and re-generate the original data
307 buf = malloc(io_u->buflen);
310 dummy.rand_seed = hdr->rand_seed;
311 dummy.buf_filled_len = 0;
312 dummy.buflen = io_u->buflen;
314 fill_pattern_headers(td, &dummy, hdr->rand_seed, 1);
316 dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset,
317 "expected", vc->io_u->file);
321 static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc)
323 struct thread_data *td = vc->td;
324 struct verify_header shdr;
326 if (td->o.verify == VERIFY_PATTERN_NO_HDR) {
327 __fill_hdr(td, vc->io_u, &shdr, 0, vc->io_u->buflen, 0);
331 __dump_verify_buffers(hdr, vc);
334 static void log_verify_failure(struct verify_header *hdr, struct vcont *vc)
336 unsigned long long offset;
338 offset = vc->io_u->offset;
339 offset += vc->hdr_num * hdr->len;
340 log_err("%.8s: verify failed at file %s offset %llu, length %u\n",
341 vc->name, vc->io_u->file->file_name, offset, hdr->len);
343 if (vc->good_crc && vc->bad_crc) {
344 log_err(" Expected CRC: ");
345 hexdump(vc->good_crc, vc->crc_len);
346 log_err(" Received CRC: ");
347 hexdump(vc->bad_crc, vc->crc_len);
350 dump_verify_buffers(hdr, vc);
354 * Return data area 'header_num'
356 static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc)
358 return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(vc->td, hdr);
361 static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc)
363 struct thread_data *td = vc->td;
364 struct io_u *io_u = vc->io_u;
366 unsigned int header_size = __hdr_size(td->o.verify);
367 unsigned int len, mod, i, pattern_size;
370 pattern = td->o.verify_pattern;
371 pattern_size = td->o.verify_pattern_bytes;
372 assert(pattern_size != 0);
374 (void)paste_format_inplace(pattern, pattern_size,
375 td->o.verify_fmt, td->o.verify_fmt_sz, io_u);
377 buf = (void *) hdr + header_size;
378 len = get_hdr_inc(td, io_u) - header_size;
379 mod = (get_hdr_inc(td, io_u) * vc->hdr_num + header_size) % pattern_size;
381 rc = cmp_pattern(pattern, pattern_size, mod, buf, len);
385 /* Slow path, compare each byte */
386 for (i = 0; i < len; i++) {
387 if (buf[i] != pattern[mod]) {
390 bits = hweight8(buf[i] ^ pattern[mod]);
391 log_err("fio: got pattern '%02x', wanted '%02x'. Bad bits %d\n",
392 (unsigned char)buf[i],
393 (unsigned char)pattern[mod],
395 log_err("fio: bad pattern block offset %u\n", i);
396 vc->name = "pattern";
397 log_verify_failure(hdr, vc);
401 if (mod == td->o.verify_pattern_bytes)
405 /* Unreachable line */
410 static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
412 void *p = io_u_verify_off(hdr, vc);
413 struct vhdr_xxhash *vh = hdr_priv(hdr);
417 dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
419 state = XXH32_init(1);
420 XXH32_update(state, p, hdr->len - hdr_size(vc->td, hdr));
421 hash = XXH32_digest(state);
423 if (vh->hash == hash)
427 vc->good_crc = &vh->hash;
429 vc->crc_len = sizeof(hash);
430 log_verify_failure(hdr, vc);
434 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
436 void *p = io_u_verify_off(hdr, vc);
437 struct vhdr_sha512 *vh = hdr_priv(hdr);
439 struct fio_sha512_ctx sha512_ctx = {
443 dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len);
445 fio_sha512_init(&sha512_ctx);
446 fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(vc->td, hdr));
448 if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512)))
452 vc->good_crc = vh->sha512;
453 vc->bad_crc = sha512_ctx.buf;
454 vc->crc_len = sizeof(vh->sha512);
455 log_verify_failure(hdr, vc);
459 static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc)
461 void *p = io_u_verify_off(hdr, vc);
462 struct vhdr_sha256 *vh = hdr_priv(hdr);
464 struct fio_sha256_ctx sha256_ctx = {
468 dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len);
470 fio_sha256_init(&sha256_ctx);
471 fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(vc->td, hdr));
472 fio_sha256_final(&sha256_ctx);
474 if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256)))
478 vc->good_crc = vh->sha256;
479 vc->bad_crc = sha256_ctx.buf;
480 vc->crc_len = sizeof(vh->sha256);
481 log_verify_failure(hdr, vc);
485 static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc)
487 void *p = io_u_verify_off(hdr, vc);
488 struct vhdr_sha1 *vh = hdr_priv(hdr);
490 struct fio_sha1_ctx sha1_ctx = {
494 dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len);
496 fio_sha1_init(&sha1_ctx);
497 fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(vc->td, hdr));
498 fio_sha1_final(&sha1_ctx);
500 if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1)))
504 vc->good_crc = vh->sha1;
505 vc->bad_crc = sha1_ctx.H;
506 vc->crc_len = sizeof(vh->sha1);
507 log_verify_failure(hdr, vc);
511 static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc)
513 void *p = io_u_verify_off(hdr, vc);
514 struct vhdr_crc7 *vh = hdr_priv(hdr);
517 dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len);
519 c = fio_crc7(p, hdr->len - hdr_size(vc->td, hdr));
525 vc->good_crc = &vh->crc7;
528 log_verify_failure(hdr, vc);
532 static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc)
534 void *p = io_u_verify_off(hdr, vc);
535 struct vhdr_crc16 *vh = hdr_priv(hdr);
538 dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len);
540 c = fio_crc16(p, hdr->len - hdr_size(vc->td, hdr));
546 vc->good_crc = &vh->crc16;
549 log_verify_failure(hdr, vc);
553 static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc)
555 void *p = io_u_verify_off(hdr, vc);
556 struct vhdr_crc64 *vh = hdr_priv(hdr);
557 unsigned long long c;
559 dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len);
561 c = fio_crc64(p, hdr->len - hdr_size(vc->td, hdr));
567 vc->good_crc = &vh->crc64;
570 log_verify_failure(hdr, vc);
574 static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc)
576 void *p = io_u_verify_off(hdr, vc);
577 struct vhdr_crc32 *vh = hdr_priv(hdr);
580 dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len);
582 c = fio_crc32(p, hdr->len - hdr_size(vc->td, hdr));
588 vc->good_crc = &vh->crc32;
591 log_verify_failure(hdr, vc);
595 static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc)
597 void *p = io_u_verify_off(hdr, vc);
598 struct vhdr_crc32 *vh = hdr_priv(hdr);
601 dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len);
603 c = fio_crc32c(p, hdr->len - hdr_size(vc->td, hdr));
609 vc->good_crc = &vh->crc32;
612 log_verify_failure(hdr, vc);
616 static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc)
618 void *p = io_u_verify_off(hdr, vc);
619 struct vhdr_md5 *vh = hdr_priv(hdr);
620 uint32_t hash[MD5_HASH_WORDS];
621 struct fio_md5_ctx md5_ctx = {
625 dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len);
627 fio_md5_init(&md5_ctx);
628 fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(vc->td, hdr));
629 fio_md5_final(&md5_ctx);
631 if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash)))
635 vc->good_crc = vh->md5_digest;
636 vc->bad_crc = md5_ctx.hash;
637 vc->crc_len = sizeof(hash);
638 log_verify_failure(hdr, vc);
643 * Push IO verification to a separate thread
645 int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr)
647 struct io_u *io_u = *io_u_ptr;
649 pthread_mutex_lock(&td->io_u_lock);
652 put_file_log(td, io_u->file);
654 if (io_u->flags & IO_U_F_IN_CUR_DEPTH) {
656 io_u_clear(td, io_u, IO_U_F_IN_CUR_DEPTH);
658 flist_add_tail(&io_u->verify_list, &td->verify_list);
660 pthread_mutex_unlock(&td->io_u_lock);
662 pthread_cond_signal(&td->verify_cond);
667 * Thanks Rusty, for spending the time so I don't have to.
669 * http://rusty.ozlabs.org/?p=560
671 static int mem_is_zero(const void *data, size_t length)
673 const unsigned char *p = data;
676 /* Check first 16 bytes manually */
677 for (len = 0; len < 16; len++) {
686 /* Now we know that's zero, memcmp with self. */
687 return memcmp(data, p, length) == 0;
690 static int mem_is_zero_slow(const void *data, size_t length, size_t *offset)
692 const unsigned char *p = data;
706 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
710 if (!td->o.trim_zero)
713 if (mem_is_zero(io_u->buf, io_u->buflen))
716 mem_is_zero_slow(io_u->buf, io_u->buflen, &offset);
718 log_err("trim: verify failed at file %s offset %llu, length %lu"
719 ", block offset %lu\n",
720 io_u->file->file_name, io_u->offset, io_u->buflen,
721 (unsigned long) offset);
725 static int verify_header(struct io_u *io_u, struct thread_data *td,
726 struct verify_header *hdr, unsigned int hdr_num,
727 unsigned int hdr_len)
732 if (hdr->magic != FIO_HDR_MAGIC) {
733 log_err("verify: bad magic header %x, wanted %x",
734 hdr->magic, FIO_HDR_MAGIC);
737 if (hdr->len != hdr_len) {
738 log_err("verify: bad header length %u, wanted %u",
742 if (hdr->rand_seed != io_u->rand_seed) {
743 log_err("verify: bad header rand_seed %"PRIu64
745 hdr->rand_seed, io_u->rand_seed);
748 if (hdr->offset != io_u->offset + hdr_num * td->o.verify_interval) {
749 log_err("verify: bad header offset %"PRIu64
751 hdr->offset, io_u->offset);
756 * For read-only workloads, the program cannot be certain of the
757 * last numberio written to a block. Checking of numberio will be
758 * done only for workloads that write data. For verify_only,
759 * numberio will be checked in the last iteration when the correct
760 * state of numberio, that would have been written to each block
761 * in a previous run of fio, has been reached.
763 if ((td_write(td) || td_rw(td)) && (td_min_bs(td) == td_max_bs(td)) &&
765 if (!td->o.verify_only || td->o.loops == 0)
766 if (hdr->numberio != io_u->numberio) {
767 log_err("verify: bad header numberio %"PRIu16
769 hdr->numberio, io_u->numberio);
773 crc = fio_crc32c(p, offsetof(struct verify_header, crc32));
774 if (crc != hdr->crc32) {
775 log_err("verify: bad header crc %x, calculated %x",
782 log_err(" at file %s offset %llu, length %u\n",
783 io_u->file->file_name,
784 io_u->offset + hdr_num * hdr_len, hdr_len);
786 if (td->o.verify_dump)
787 dump_buf(p, hdr_len, io_u->offset + hdr_num * hdr_len,
788 "hdr_fail", io_u->file);
793 int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr)
795 struct verify_header *hdr;
796 struct io_u *io_u = *io_u_ptr;
797 unsigned int header_size, hdr_inc, hdr_num = 0;
801 if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
804 * If the IO engine is faking IO (like null), then just pretend
805 * we verified everything.
807 if (td_ioengine_flagged(td, FIO_FAKEIO))
810 if (io_u->flags & IO_U_F_TRIMMED) {
811 ret = verify_trimmed_io_u(td, io_u);
815 hdr_inc = get_hdr_inc(td, io_u);
818 for (p = io_u->buf; p < io_u->buf + io_u->buflen;
819 p += hdr_inc, hdr_num++) {
825 unsigned int verify_type;
827 if (ret && td->o.verify_fatal)
830 header_size = __hdr_size(td->o.verify);
831 if (td->o.verify_offset)
832 memswp(p, p + td->o.verify_offset, header_size);
836 * Make rand_seed check pass when have verifysort or
839 if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG))
840 io_u->rand_seed = hdr->rand_seed;
842 if (td->o.verify != VERIFY_PATTERN_NO_HDR) {
843 ret = verify_header(io_u, td, hdr, hdr_num, hdr_inc);
848 if (td->o.verify != VERIFY_NONE)
849 verify_type = td->o.verify;
851 verify_type = hdr->verify_type;
853 switch (verify_type) {
854 case VERIFY_HDR_ONLY:
855 /* Header is always verified, check if pattern is left
856 * for verification. */
857 if (td->o.verify_pattern_bytes)
858 ret = verify_io_u_pattern(hdr, &vc);
861 ret = verify_io_u_md5(hdr, &vc);
864 ret = verify_io_u_crc64(hdr, &vc);
867 case VERIFY_CRC32C_INTEL:
868 ret = verify_io_u_crc32c(hdr, &vc);
871 ret = verify_io_u_crc32(hdr, &vc);
874 ret = verify_io_u_crc16(hdr, &vc);
877 ret = verify_io_u_crc7(hdr, &vc);
880 ret = verify_io_u_sha256(hdr, &vc);
883 ret = verify_io_u_sha512(hdr, &vc);
886 ret = verify_io_u_xxhash(hdr, &vc);
889 ret = verify_io_u_sha1(hdr, &vc);
892 case VERIFY_PATTERN_NO_HDR:
893 ret = verify_io_u_pattern(hdr, &vc);
896 log_err("Bad verify type %u\n", hdr->verify_type);
900 if (ret && verify_type != hdr->verify_type)
901 log_err("fio: verify type mismatch (%u media, %u given)\n",
902 hdr->verify_type, verify_type);
906 if (ret && td->o.verify_fatal)
907 fio_mark_td_terminate(td);
912 static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
914 struct vhdr_xxhash *vh = hdr_priv(hdr);
917 state = XXH32_init(1);
918 XXH32_update(state, p, len);
919 vh->hash = XXH32_digest(state);
922 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
924 struct vhdr_sha512 *vh = hdr_priv(hdr);
925 struct fio_sha512_ctx sha512_ctx = {
929 fio_sha512_init(&sha512_ctx);
930 fio_sha512_update(&sha512_ctx, p, len);
933 static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len)
935 struct vhdr_sha256 *vh = hdr_priv(hdr);
936 struct fio_sha256_ctx sha256_ctx = {
940 fio_sha256_init(&sha256_ctx);
941 fio_sha256_update(&sha256_ctx, p, len);
942 fio_sha256_final(&sha256_ctx);
945 static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len)
947 struct vhdr_sha1 *vh = hdr_priv(hdr);
948 struct fio_sha1_ctx sha1_ctx = {
952 fio_sha1_init(&sha1_ctx);
953 fio_sha1_update(&sha1_ctx, p, len);
954 fio_sha1_final(&sha1_ctx);
957 static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
959 struct vhdr_crc7 *vh = hdr_priv(hdr);
961 vh->crc7 = fio_crc7(p, len);
964 static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
966 struct vhdr_crc16 *vh = hdr_priv(hdr);
968 vh->crc16 = fio_crc16(p, len);
971 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
973 struct vhdr_crc32 *vh = hdr_priv(hdr);
975 vh->crc32 = fio_crc32(p, len);
978 static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
980 struct vhdr_crc32 *vh = hdr_priv(hdr);
982 vh->crc32 = fio_crc32c(p, len);
985 static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
987 struct vhdr_crc64 *vh = hdr_priv(hdr);
989 vh->crc64 = fio_crc64(p, len);
992 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
994 struct vhdr_md5 *vh = hdr_priv(hdr);
995 struct fio_md5_ctx md5_ctx = {
996 .hash = (uint32_t *) vh->md5_digest,
999 fio_md5_init(&md5_ctx);
1000 fio_md5_update(&md5_ctx, p, len);
1001 fio_md5_final(&md5_ctx);
1004 static void __fill_hdr(struct thread_data *td, struct io_u *io_u,
1005 struct verify_header *hdr, unsigned int header_num,
1006 unsigned int header_len, uint64_t rand_seed)
1010 hdr->magic = FIO_HDR_MAGIC;
1011 hdr->verify_type = td->o.verify;
1012 hdr->len = header_len;
1013 hdr->rand_seed = rand_seed;
1014 hdr->offset = io_u->offset + header_num * td->o.verify_interval;
1015 hdr->time_sec = io_u->start_time.tv_sec;
1016 hdr->time_usec = io_u->start_time.tv_usec;
1017 hdr->thread = td->thread_number;
1018 hdr->numberio = io_u->numberio;
1019 hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32));
1023 static void fill_hdr(struct thread_data *td, struct io_u *io_u,
1024 struct verify_header *hdr, unsigned int header_num,
1025 unsigned int header_len, uint64_t rand_seed)
1028 if (td->o.verify != VERIFY_PATTERN_NO_HDR)
1029 __fill_hdr(td, io_u, hdr, header_num, header_len, rand_seed);
1032 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
1033 struct verify_header *hdr, unsigned int header_num,
1034 unsigned int header_len)
1036 unsigned int data_len;
1041 fill_hdr(td, io_u, hdr, header_num, header_len, io_u->rand_seed);
1043 data_len = header_len - hdr_size(td, hdr);
1045 data = p + hdr_size(td, hdr);
1046 switch (td->o.verify) {
1048 dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n",
1050 fill_md5(hdr, data, data_len);
1053 dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n",
1055 fill_crc64(hdr, data, data_len);
1058 case VERIFY_CRC32C_INTEL:
1059 dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
1061 fill_crc32c(hdr, data, data_len);
1064 dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
1066 fill_crc32(hdr, data, data_len);
1069 dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n",
1071 fill_crc16(hdr, data, data_len);
1074 dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n",
1076 fill_crc7(hdr, data, data_len);
1079 dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n",
1081 fill_sha256(hdr, data, data_len);
1084 dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n",
1086 fill_sha512(hdr, data, data_len);
1089 dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
1091 fill_xxhash(hdr, data, data_len);
1094 dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n",
1096 fill_sha1(hdr, data, data_len);
1098 case VERIFY_HDR_ONLY:
1099 case VERIFY_PATTERN:
1100 case VERIFY_PATTERN_NO_HDR:
1101 /* nothing to do here */
1104 log_err("fio: bad verify type: %d\n", td->o.verify);
1108 if (td->o.verify_offset && hdr_size(td, hdr))
1109 memswp(p, p + td->o.verify_offset, hdr_size(td, hdr));
1113 * fill body of io_u->buf with random data and add a header with the
1114 * checksum of choice
1116 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
1118 if (td->o.verify == VERIFY_NULL)
1121 io_u->numberio = td->io_issues[io_u->ddir];
1123 fill_pattern_headers(td, io_u, 0, 0);
1126 int get_next_verify(struct thread_data *td, struct io_u *io_u)
1128 struct io_piece *ipo = NULL;
1131 * this io_u is from a requeue, we already filled the offsets
1136 if (!RB_EMPTY_ROOT(&td->io_hist_tree)) {
1137 struct rb_node *n = rb_first(&td->io_hist_tree);
1139 ipo = rb_entry(n, struct io_piece, rb_node);
1142 * Ensure that the associated IO has completed
1145 if (ipo->flags & IP_F_IN_FLIGHT)
1148 rb_erase(n, &td->io_hist_tree);
1149 assert(ipo->flags & IP_F_ONRB);
1150 ipo->flags &= ~IP_F_ONRB;
1151 } else if (!flist_empty(&td->io_hist_list)) {
1152 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
1155 * Ensure that the associated IO has completed
1158 if (ipo->flags & IP_F_IN_FLIGHT)
1161 flist_del(&ipo->list);
1162 assert(ipo->flags & IP_F_ONLIST);
1163 ipo->flags &= ~IP_F_ONLIST;
1169 io_u->offset = ipo->offset;
1170 io_u->buflen = ipo->len;
1171 io_u->numberio = ipo->numberio;
1172 io_u->file = ipo->file;
1173 io_u_set(td, io_u, IO_U_F_VER_LIST);
1175 if (ipo->flags & IP_F_TRIMMED)
1176 io_u_set(td, io_u, IO_U_F_TRIMMED);
1178 if (!fio_file_open(io_u->file)) {
1179 int r = td_io_open_file(td, io_u->file);
1182 dprint(FD_VERIFY, "failed file %s open\n",
1183 io_u->file->file_name);
1188 get_file(ipo->file);
1189 assert(fio_file_open(io_u->file));
1190 io_u->ddir = DDIR_READ;
1191 io_u->xfer_buf = io_u->buf;
1192 io_u->xfer_buflen = io_u->buflen;
1194 remove_trim_entry(td, ipo);
1196 dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u);
1198 if (!td->o.verify_pattern_bytes) {
1199 io_u->rand_seed = __rand(&td->verify_state);
1200 if (sizeof(int) != sizeof(long *))
1201 io_u->rand_seed *= __rand(&td->verify_state);
1207 dprint(FD_VERIFY, "get_next_verify: empty\n");
1211 void fio_verify_init(struct thread_data *td)
1213 if (td->o.verify == VERIFY_CRC32C_INTEL ||
1214 td->o.verify == VERIFY_CRC32C_ARM64 ||
1215 td->o.verify == VERIFY_CRC32C) {
1216 crc32c_arm64_probe();
1217 crc32c_intel_probe();
1221 static void *verify_async_thread(void *data)
1223 struct thread_data *td = data;
1227 if (fio_option_is_set(&td->o, verify_cpumask) &&
1228 fio_setaffinity(td->pid, td->o.verify_cpumask)) {
1229 log_err("fio: failed setting verify thread affinity\n");
1237 if (td->verify_thread_exit)
1240 pthread_mutex_lock(&td->io_u_lock);
1242 while (flist_empty(&td->verify_list) &&
1243 !td->verify_thread_exit) {
1244 ret = pthread_cond_wait(&td->verify_cond,
1247 pthread_mutex_unlock(&td->io_u_lock);
1252 flist_splice_init(&td->verify_list, &list);
1253 pthread_mutex_unlock(&td->io_u_lock);
1255 if (flist_empty(&list))
1258 while (!flist_empty(&list)) {
1259 io_u = flist_first_entry(&list, struct io_u, verify_list);
1260 flist_del_init(&io_u->verify_list);
1262 io_u_set(td, io_u, IO_U_F_NO_FILE_PUT);
1263 ret = verify_io_u(td, &io_u);
1268 if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) {
1269 update_error_count(td, ret);
1277 td_verror(td, ret, "async_verify");
1278 if (td->o.verify_fatal)
1279 fio_mark_td_terminate(td);
1283 pthread_mutex_lock(&td->io_u_lock);
1284 td->nr_verify_threads--;
1285 pthread_mutex_unlock(&td->io_u_lock);
1287 pthread_cond_signal(&td->free_cond);
1291 int verify_async_init(struct thread_data *td)
1294 pthread_attr_t attr;
1296 pthread_attr_init(&attr);
1297 pthread_attr_setstacksize(&attr, 2 * PTHREAD_STACK_MIN);
1299 td->verify_thread_exit = 0;
1301 td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async);
1302 for (i = 0; i < td->o.verify_async; i++) {
1303 ret = pthread_create(&td->verify_threads[i], &attr,
1304 verify_async_thread, td);
1306 log_err("fio: async verify creation failed: %s\n",
1310 ret = pthread_detach(td->verify_threads[i]);
1312 log_err("fio: async verify thread detach failed: %s\n",
1316 td->nr_verify_threads++;
1319 pthread_attr_destroy(&attr);
1321 if (i != td->o.verify_async) {
1322 log_err("fio: only %d verify threads started, exiting\n", i);
1323 td->verify_thread_exit = 1;
1325 pthread_cond_broadcast(&td->verify_cond);
1332 void verify_async_exit(struct thread_data *td)
1334 td->verify_thread_exit = 1;
1336 pthread_cond_broadcast(&td->verify_cond);
1338 pthread_mutex_lock(&td->io_u_lock);
1340 while (td->nr_verify_threads)
1341 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1343 pthread_mutex_unlock(&td->io_u_lock);
1344 free(td->verify_threads);
1345 td->verify_threads = NULL;
1348 int paste_blockoff(char *buf, unsigned int len, void *priv)
1350 struct io_u *io = priv;
1351 unsigned long long off;
1353 typecheck(typeof(off), io->offset);
1354 off = cpu_to_le64((uint64_t)io->offset);
1355 len = min(len, (unsigned int)sizeof(off));
1356 memcpy(buf, &off, len);
1360 static int __fill_file_completions(struct thread_data *td,
1361 struct thread_io_list *s,
1362 struct fio_file *f, unsigned int *index)
1367 if (!f->last_write_comp)
1370 if (td->io_blocks[DDIR_WRITE] < td->o.iodepth)
1371 comps = td->io_blocks[DDIR_WRITE];
1373 comps = td->o.iodepth;
1375 j = f->last_write_idx - 1;
1376 for (i = 0; i < comps; i++) {
1378 j = td->o.iodepth - 1;
1379 s->comps[*index].fileno = __cpu_to_le64(f->fileno);
1380 s->comps[*index].offset = cpu_to_le64(f->last_write_comp[j]);
1388 static int fill_file_completions(struct thread_data *td,
1389 struct thread_io_list *s, unsigned int *index)
1395 for_each_file(td, f, i)
1396 comps += __fill_file_completions(td, s, f, index);
1401 struct all_io_list *get_all_io_list(int save_mask, size_t *sz)
1403 struct all_io_list *rep;
1404 struct thread_data *td;
1409 compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list");
1412 * Calculate reply space needed. We need one 'io_state' per thread,
1413 * and the size will vary depending on depth.
1417 for_each_td(td, i) {
1418 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1421 td->flags |= TD_F_VSTATE_SAVED;
1422 depth += (td->o.iodepth * td->o.nr_files);
1430 *sz += nr * sizeof(struct thread_io_list);
1431 *sz += depth * sizeof(struct file_comp);
1433 memset(rep, 0, *sz);
1435 rep->threads = cpu_to_le64((uint64_t) nr);
1437 next = &rep->state[0];
1438 for_each_td(td, i) {
1439 struct thread_io_list *s = next;
1440 unsigned int comps, index = 0;
1442 if (save_mask != IO_LIST_ALL && (i + 1) != save_mask)
1445 comps = fill_file_completions(td, s, &index);
1447 s->no_comps = cpu_to_le64((uint64_t) comps);
1448 s->depth = cpu_to_le64((uint64_t) td->o.iodepth);
1449 s->nofiles = cpu_to_le64((uint64_t) td->o.nr_files);
1450 s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]);
1451 s->index = cpu_to_le64((uint64_t) i);
1452 if (td->random_state.use64) {
1453 s->rand.state64.s[0] = cpu_to_le64(td->random_state.state64.s1);
1454 s->rand.state64.s[1] = cpu_to_le64(td->random_state.state64.s2);
1455 s->rand.state64.s[2] = cpu_to_le64(td->random_state.state64.s3);
1456 s->rand.state64.s[3] = cpu_to_le64(td->random_state.state64.s4);
1457 s->rand.state64.s[4] = cpu_to_le64(td->random_state.state64.s5);
1458 s->rand.state64.s[5] = 0;
1459 s->rand.use64 = cpu_to_le64((uint64_t)1);
1461 s->rand.state32.s[0] = cpu_to_le32(td->random_state.state32.s1);
1462 s->rand.state32.s[1] = cpu_to_le32(td->random_state.state32.s2);
1463 s->rand.state32.s[2] = cpu_to_le32(td->random_state.state32.s3);
1464 s->rand.state32.s[3] = 0;
1467 s->name[sizeof(s->name) - 1] = '\0';
1468 strncpy((char *) s->name, td->o.name, sizeof(s->name) - 1);
1469 next = io_list_next(s);
1475 static int open_state_file(const char *name, const char *prefix, int num,
1483 flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC;
1487 verify_state_gen_name(out, sizeof(out), name, prefix, num);
1489 fd = open(out, flags, 0644);
1491 perror("fio: open state file");
1492 log_err("fio: state file: %s (for_write=%d)\n", out, for_write);
1499 static int write_thread_list_state(struct thread_io_list *s,
1502 struct verify_state_hdr hdr;
1507 fd = open_state_file((const char *) s->name, prefix, s->index, 1);
1511 crc = fio_crc32c((void *)s, thread_io_list_sz(s));
1513 hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION);
1514 hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s));
1515 hdr.crc = cpu_to_le64(crc);
1516 ret = write(fd, &hdr, sizeof(hdr));
1517 if (ret != sizeof(hdr))
1520 ret = write(fd, s, thread_io_list_sz(s));
1521 if (ret != thread_io_list_sz(s)) {
1524 perror("fio: write state file");
1525 log_err("fio: failed to write state file\n");
1534 void __verify_save_state(struct all_io_list *state, const char *prefix)
1536 struct thread_io_list *s = &state->state[0];
1539 for (i = 0; i < le64_to_cpu(state->threads); i++) {
1540 write_thread_list_state(s, prefix);
1541 s = io_list_next(s);
1545 void verify_save_state(int mask)
1547 struct all_io_list *state;
1550 state = get_all_io_list(mask, &sz);
1552 char prefix[PATH_MAX];
1555 sprintf(prefix, "%s%slocal", aux_path, FIO_OS_PATH_SEPARATOR);
1557 strcpy(prefix, "local");
1559 __verify_save_state(state, prefix);
1564 void verify_free_state(struct thread_data *td)
1570 void verify_assign_state(struct thread_data *td, void *p)
1572 struct thread_io_list *s = p;
1575 s->no_comps = le64_to_cpu(s->no_comps);
1576 s->depth = le32_to_cpu(s->depth);
1577 s->nofiles = le32_to_cpu(s->nofiles);
1578 s->numberio = le64_to_cpu(s->numberio);
1579 s->rand.use64 = le64_to_cpu(s->rand.use64);
1581 if (s->rand.use64) {
1582 for (i = 0; i < 6; i++)
1583 s->rand.state64.s[i] = le64_to_cpu(s->rand.state64.s[i]);
1585 for (i = 0; i < 4; i++)
1586 s->rand.state32.s[i] = le32_to_cpu(s->rand.state32.s[i]);
1589 for (i = 0; i < s->no_comps; i++) {
1590 s->comps[i].fileno = le64_to_cpu(s->comps[i].fileno);
1591 s->comps[i].offset = le64_to_cpu(s->comps[i].offset);
1597 int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s)
1601 hdr->version = le64_to_cpu(hdr->version);
1602 hdr->size = le64_to_cpu(hdr->size);
1603 hdr->crc = le64_to_cpu(hdr->crc);
1605 if (hdr->version != VSTATE_HDR_VERSION)
1608 crc = fio_crc32c((void *)s, hdr->size);
1609 if (crc != hdr->crc)
1615 int verify_load_state(struct thread_data *td, const char *prefix)
1617 struct verify_state_hdr hdr;
1623 if (!td->o.verify_state)
1626 fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0);
1630 ret = read(fd, &hdr, sizeof(hdr));
1631 if (ret != sizeof(hdr)) {
1633 td_verror(td, errno, "read verify state hdr");
1634 log_err("fio: failed reading verify state header\n");
1638 hdr.version = le64_to_cpu(hdr.version);
1639 hdr.size = le64_to_cpu(hdr.size);
1640 hdr.crc = le64_to_cpu(hdr.crc);
1642 if (hdr.version != VSTATE_HDR_VERSION) {
1643 log_err("fio: unsupported (%d) version in verify state header\n",
1644 (unsigned int) hdr.version);
1648 s = malloc(hdr.size);
1649 ret = read(fd, s, hdr.size);
1650 if (ret != hdr.size) {
1652 td_verror(td, errno, "read verify state");
1653 log_err("fio: failed reading verity state\n");
1657 crc = fio_crc32c(s, hdr.size);
1658 if (crc != hdr.crc) {
1659 log_err("fio: verify state is corrupt\n");
1665 verify_assign_state(td, s);
1675 * Use the loaded verify state to know when to stop doing verification
1677 int verify_state_should_stop(struct thread_data *td, struct io_u *io_u)
1679 struct thread_io_list *s = td->vstate;
1680 struct fio_file *f = io_u->file;
1687 * If we're not into the window of issues - depth yet, continue. If
1688 * issue is shorter than depth, do check.
1690 if ((td->io_blocks[DDIR_READ] < s->depth ||
1691 s->numberio - td->io_blocks[DDIR_READ] > s->depth) &&
1692 s->numberio > s->depth)
1696 * We're in the window of having to check if this io was
1697 * completed or not. If the IO was seen as completed, then
1700 for (i = 0; i < s->no_comps; i++) {
1701 if (s->comps[i].fileno != f->fileno)
1703 if (io_u->offset == s->comps[i].offset)
1708 * Not found, we have to stop