| 1 | /* |
| 2 | * IO verification helpers |
| 3 | */ |
| 4 | #include <unistd.h> |
| 5 | #include <fcntl.h> |
| 6 | #include <string.h> |
| 7 | #include <assert.h> |
| 8 | #include <pthread.h> |
| 9 | #include <libgen.h> |
| 10 | |
| 11 | #include "fio.h" |
| 12 | #include "verify.h" |
| 13 | #include "trim.h" |
| 14 | #include "lib/rand.h" |
| 15 | #include "lib/hweight.h" |
| 16 | |
| 17 | #include "crc/md5.h" |
| 18 | #include "crc/crc64.h" |
| 19 | #include "crc/crc32.h" |
| 20 | #include "crc/crc32c.h" |
| 21 | #include "crc/crc16.h" |
| 22 | #include "crc/crc7.h" |
| 23 | #include "crc/sha256.h" |
| 24 | #include "crc/sha512.h" |
| 25 | #include "crc/sha1.h" |
| 26 | #include "crc/xxhash.h" |
| 27 | |
| 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); |
| 31 | |
| 32 | void fill_buffer_pattern(struct thread_data *td, void *p, unsigned int len) |
| 33 | { |
| 34 | fill_pattern(p, len, td->o.buffer_pattern, td->o.buffer_pattern_bytes); |
| 35 | } |
| 36 | |
| 37 | void __fill_buffer(struct thread_options *o, unsigned long seed, void *p, |
| 38 | unsigned int len) |
| 39 | { |
| 40 | __fill_random_buf_percentage(seed, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes); |
| 41 | } |
| 42 | |
| 43 | unsigned long fill_buffer(struct thread_data *td, void *p, unsigned int len) |
| 44 | { |
| 45 | struct frand_state *fs = &td->verify_state; |
| 46 | struct thread_options *o = &td->o; |
| 47 | |
| 48 | return fill_random_buf_percentage(fs, p, o->compress_percentage, len, len, o->buffer_pattern, o->buffer_pattern_bytes); |
| 49 | } |
| 50 | |
| 51 | void fill_verify_pattern(struct thread_data *td, void *p, unsigned int len, |
| 52 | struct io_u *io_u, unsigned long seed, int use_seed) |
| 53 | { |
| 54 | struct thread_options *o = &td->o; |
| 55 | |
| 56 | if (!o->verify_pattern_bytes) { |
| 57 | dprint(FD_VERIFY, "fill random bytes len=%u\n", len); |
| 58 | |
| 59 | if (use_seed) |
| 60 | __fill_buffer(o, seed, p, len); |
| 61 | else |
| 62 | io_u->rand_seed = fill_buffer(td, p, len); |
| 63 | return; |
| 64 | } |
| 65 | |
| 66 | if (io_u->buf_filled_len >= len) { |
| 67 | dprint(FD_VERIFY, "using already filled verify pattern b=%d len=%u\n", |
| 68 | o->verify_pattern_bytes, len); |
| 69 | return; |
| 70 | } |
| 71 | |
| 72 | fill_pattern(p, len, o->verify_pattern, o->verify_pattern_bytes); |
| 73 | io_u->buf_filled_len = len; |
| 74 | } |
| 75 | |
| 76 | static unsigned int get_hdr_inc(struct thread_data *td, struct io_u *io_u) |
| 77 | { |
| 78 | unsigned int hdr_inc; |
| 79 | |
| 80 | hdr_inc = io_u->buflen; |
| 81 | if (td->o.verify_interval && td->o.verify_interval <= io_u->buflen) |
| 82 | hdr_inc = td->o.verify_interval; |
| 83 | |
| 84 | return hdr_inc; |
| 85 | } |
| 86 | |
| 87 | static void fill_pattern_headers(struct thread_data *td, struct io_u *io_u, |
| 88 | unsigned long seed, int use_seed) |
| 89 | { |
| 90 | unsigned int hdr_inc, header_num; |
| 91 | struct verify_header *hdr; |
| 92 | void *p = io_u->buf; |
| 93 | |
| 94 | fill_verify_pattern(td, p, io_u->buflen, io_u, seed, use_seed); |
| 95 | |
| 96 | hdr_inc = get_hdr_inc(td, io_u); |
| 97 | header_num = 0; |
| 98 | for (; p < io_u->buf + io_u->buflen; p += hdr_inc) { |
| 99 | hdr = p; |
| 100 | populate_hdr(td, io_u, hdr, header_num, hdr_inc); |
| 101 | header_num++; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | static void memswp(void *buf1, void *buf2, unsigned int len) |
| 106 | { |
| 107 | char swap[200]; |
| 108 | |
| 109 | assert(len <= sizeof(swap)); |
| 110 | |
| 111 | memcpy(&swap, buf1, len); |
| 112 | memcpy(buf1, buf2, len); |
| 113 | memcpy(buf2, &swap, len); |
| 114 | } |
| 115 | |
| 116 | static void hexdump(void *buffer, int len) |
| 117 | { |
| 118 | unsigned char *p = buffer; |
| 119 | int i; |
| 120 | |
| 121 | for (i = 0; i < len; i++) |
| 122 | log_err("%02x", p[i]); |
| 123 | log_err("\n"); |
| 124 | } |
| 125 | |
| 126 | /* |
| 127 | * Prepare for separation of verify_header and checksum header |
| 128 | */ |
| 129 | static inline unsigned int __hdr_size(int verify_type) |
| 130 | { |
| 131 | unsigned int len = 0; |
| 132 | |
| 133 | switch (verify_type) { |
| 134 | case VERIFY_NONE: |
| 135 | case VERIFY_NULL: |
| 136 | len = 0; |
| 137 | break; |
| 138 | case VERIFY_MD5: |
| 139 | len = sizeof(struct vhdr_md5); |
| 140 | break; |
| 141 | case VERIFY_CRC64: |
| 142 | len = sizeof(struct vhdr_crc64); |
| 143 | break; |
| 144 | case VERIFY_CRC32C: |
| 145 | case VERIFY_CRC32: |
| 146 | case VERIFY_CRC32C_INTEL: |
| 147 | len = sizeof(struct vhdr_crc32); |
| 148 | break; |
| 149 | case VERIFY_CRC16: |
| 150 | len = sizeof(struct vhdr_crc16); |
| 151 | break; |
| 152 | case VERIFY_CRC7: |
| 153 | len = sizeof(struct vhdr_crc7); |
| 154 | break; |
| 155 | case VERIFY_SHA256: |
| 156 | len = sizeof(struct vhdr_sha256); |
| 157 | break; |
| 158 | case VERIFY_SHA512: |
| 159 | len = sizeof(struct vhdr_sha512); |
| 160 | break; |
| 161 | case VERIFY_XXHASH: |
| 162 | len = sizeof(struct vhdr_xxhash); |
| 163 | break; |
| 164 | case VERIFY_META: |
| 165 | len = sizeof(struct vhdr_meta); |
| 166 | break; |
| 167 | case VERIFY_SHA1: |
| 168 | len = sizeof(struct vhdr_sha1); |
| 169 | break; |
| 170 | case VERIFY_PATTERN: |
| 171 | len = 0; |
| 172 | break; |
| 173 | default: |
| 174 | log_err("fio: unknown verify header!\n"); |
| 175 | assert(0); |
| 176 | } |
| 177 | |
| 178 | return len + sizeof(struct verify_header); |
| 179 | } |
| 180 | |
| 181 | static inline unsigned int hdr_size(struct verify_header *hdr) |
| 182 | { |
| 183 | return __hdr_size(hdr->verify_type); |
| 184 | } |
| 185 | |
| 186 | static void *hdr_priv(struct verify_header *hdr) |
| 187 | { |
| 188 | void *priv = hdr; |
| 189 | |
| 190 | return priv + sizeof(struct verify_header); |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * Verify container, pass info to verify handlers and allow them to |
| 195 | * pass info back in case of error |
| 196 | */ |
| 197 | struct vcont { |
| 198 | /* |
| 199 | * Input |
| 200 | */ |
| 201 | struct io_u *io_u; |
| 202 | unsigned int hdr_num; |
| 203 | struct thread_data *td; |
| 204 | |
| 205 | /* |
| 206 | * Output, only valid in case of error |
| 207 | */ |
| 208 | const char *name; |
| 209 | void *good_crc; |
| 210 | void *bad_crc; |
| 211 | unsigned int crc_len; |
| 212 | }; |
| 213 | |
| 214 | #define DUMP_BUF_SZ 255 |
| 215 | static int dump_buf_warned; |
| 216 | |
| 217 | static void dump_buf(char *buf, unsigned int len, unsigned long long offset, |
| 218 | const char *type, struct fio_file *f) |
| 219 | { |
| 220 | char *ptr, fname[DUMP_BUF_SZ]; |
| 221 | size_t buf_left = DUMP_BUF_SZ; |
| 222 | int ret, fd; |
| 223 | |
| 224 | ptr = strdup(f->file_name); |
| 225 | |
| 226 | fname[DUMP_BUF_SZ - 1] = '\0'; |
| 227 | strncpy(fname, basename(ptr), DUMP_BUF_SZ - 1); |
| 228 | |
| 229 | buf_left -= strlen(fname); |
| 230 | if (buf_left <= 0) { |
| 231 | if (!dump_buf_warned) { |
| 232 | log_err("fio: verify failure dump buffer too small\n"); |
| 233 | dump_buf_warned = 1; |
| 234 | } |
| 235 | free(ptr); |
| 236 | return; |
| 237 | } |
| 238 | |
| 239 | snprintf(fname + strlen(fname), buf_left, ".%llu.%s", offset, type); |
| 240 | |
| 241 | fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0644); |
| 242 | if (fd < 0) { |
| 243 | perror("open verify buf file"); |
| 244 | return; |
| 245 | } |
| 246 | |
| 247 | while (len) { |
| 248 | ret = write(fd, buf, len); |
| 249 | if (!ret) |
| 250 | break; |
| 251 | else if (ret < 0) { |
| 252 | perror("write verify buf file"); |
| 253 | break; |
| 254 | } |
| 255 | len -= ret; |
| 256 | buf += ret; |
| 257 | } |
| 258 | |
| 259 | close(fd); |
| 260 | log_err(" %s data dumped as %s\n", type, fname); |
| 261 | free(ptr); |
| 262 | } |
| 263 | |
| 264 | /* |
| 265 | * Dump the contents of the read block and re-generate the correct data |
| 266 | * and dump that too. |
| 267 | */ |
| 268 | static void dump_verify_buffers(struct verify_header *hdr, struct vcont *vc) |
| 269 | { |
| 270 | struct thread_data *td = vc->td; |
| 271 | struct io_u *io_u = vc->io_u; |
| 272 | unsigned long hdr_offset; |
| 273 | struct io_u dummy; |
| 274 | void *buf; |
| 275 | |
| 276 | if (!td->o.verify_dump) |
| 277 | return; |
| 278 | |
| 279 | /* |
| 280 | * Dump the contents we just read off disk |
| 281 | */ |
| 282 | hdr_offset = vc->hdr_num * hdr->len; |
| 283 | |
| 284 | dump_buf(io_u->buf + hdr_offset, hdr->len, io_u->offset + hdr_offset, |
| 285 | "received", vc->io_u->file); |
| 286 | |
| 287 | /* |
| 288 | * Allocate a new buf and re-generate the original data |
| 289 | */ |
| 290 | buf = malloc(io_u->buflen); |
| 291 | dummy = *io_u; |
| 292 | dummy.buf = buf; |
| 293 | dummy.rand_seed = hdr->rand_seed; |
| 294 | dummy.buf_filled_len = 0; |
| 295 | dummy.buflen = io_u->buflen; |
| 296 | |
| 297 | fill_pattern_headers(td, &dummy, hdr->rand_seed, 1); |
| 298 | |
| 299 | dump_buf(buf + hdr_offset, hdr->len, io_u->offset + hdr_offset, |
| 300 | "expected", vc->io_u->file); |
| 301 | free(buf); |
| 302 | } |
| 303 | |
| 304 | static void log_verify_failure(struct verify_header *hdr, struct vcont *vc) |
| 305 | { |
| 306 | unsigned long long offset; |
| 307 | |
| 308 | offset = vc->io_u->offset; |
| 309 | offset += vc->hdr_num * hdr->len; |
| 310 | log_err("%.8s: verify failed at file %s offset %llu, length %u\n", |
| 311 | vc->name, vc->io_u->file->file_name, offset, hdr->len); |
| 312 | |
| 313 | if (vc->good_crc && vc->bad_crc) { |
| 314 | log_err(" Expected CRC: "); |
| 315 | hexdump(vc->good_crc, vc->crc_len); |
| 316 | log_err(" Received CRC: "); |
| 317 | hexdump(vc->bad_crc, vc->crc_len); |
| 318 | } |
| 319 | |
| 320 | dump_verify_buffers(hdr, vc); |
| 321 | } |
| 322 | |
| 323 | /* |
| 324 | * Return data area 'header_num' |
| 325 | */ |
| 326 | static inline void *io_u_verify_off(struct verify_header *hdr, struct vcont *vc) |
| 327 | { |
| 328 | return vc->io_u->buf + vc->hdr_num * hdr->len + hdr_size(hdr); |
| 329 | } |
| 330 | |
| 331 | static int verify_io_u_pattern(struct verify_header *hdr, struct vcont *vc) |
| 332 | { |
| 333 | struct thread_data *td = vc->td; |
| 334 | struct io_u *io_u = vc->io_u; |
| 335 | char *buf, *pattern; |
| 336 | unsigned int header_size = __hdr_size(td->o.verify); |
| 337 | unsigned int len, mod, i, size, pattern_size; |
| 338 | |
| 339 | pattern = td->o.verify_pattern; |
| 340 | pattern_size = td->o.verify_pattern_bytes; |
| 341 | if (pattern_size <= 1) |
| 342 | pattern_size = MAX_PATTERN_SIZE; |
| 343 | buf = (void *) hdr + header_size; |
| 344 | len = get_hdr_inc(td, io_u) - header_size; |
| 345 | mod = header_size % pattern_size; |
| 346 | |
| 347 | for (i = 0; i < len; i += size) { |
| 348 | size = pattern_size - mod; |
| 349 | if (size > (len - i)) |
| 350 | size = len - i; |
| 351 | if (memcmp(buf + i, pattern + mod, size)) |
| 352 | /* Let the slow compare find the first mismatch byte. */ |
| 353 | break; |
| 354 | mod = 0; |
| 355 | } |
| 356 | |
| 357 | for (; i < len; i++) { |
| 358 | if (buf[i] != pattern[mod]) { |
| 359 | unsigned int bits; |
| 360 | |
| 361 | bits = hweight8(buf[i] ^ pattern[mod]); |
| 362 | log_err("fio: got pattern %x, wanted %x. Bad bits %d\n", |
| 363 | buf[i], pattern[mod], bits); |
| 364 | log_err("fio: bad pattern block offset %u\n", i); |
| 365 | dump_verify_buffers(hdr, vc); |
| 366 | return EILSEQ; |
| 367 | } |
| 368 | mod++; |
| 369 | if (mod == td->o.verify_pattern_bytes) |
| 370 | mod = 0; |
| 371 | } |
| 372 | |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc) |
| 377 | { |
| 378 | struct thread_data *td = vc->td; |
| 379 | struct vhdr_meta *vh = hdr_priv(hdr); |
| 380 | struct io_u *io_u = vc->io_u; |
| 381 | int ret = EILSEQ; |
| 382 | |
| 383 | dprint(FD_VERIFY, "meta verify io_u %p, len %u\n", io_u, hdr->len); |
| 384 | |
| 385 | if (vh->offset == io_u->offset + vc->hdr_num * td->o.verify_interval) |
| 386 | ret = 0; |
| 387 | |
| 388 | if (td->o.verify_pattern_bytes) |
| 389 | ret |= verify_io_u_pattern(hdr, vc); |
| 390 | |
| 391 | /* |
| 392 | * For read-only workloads, the program cannot be certain of the |
| 393 | * last numberio written to a block. Checking of numberio will be |
| 394 | * done only for workloads that write data. For verify_only, |
| 395 | * numberio will be checked in the last iteration when the correct |
| 396 | * state of numberio, that would have been written to each block |
| 397 | * in a previous run of fio, has been reached. |
| 398 | */ |
| 399 | if ((td_write(td) || td_rw(td)) && (td_min_bs(td) == td_max_bs(td)) && |
| 400 | !td->o.time_based) |
| 401 | if (!td->o.verify_only || td->o.loops == 0) |
| 402 | if (vh->numberio != io_u->numberio) |
| 403 | ret = EILSEQ; |
| 404 | |
| 405 | if (!ret) |
| 406 | return 0; |
| 407 | |
| 408 | vc->name = "meta"; |
| 409 | log_verify_failure(hdr, vc); |
| 410 | return ret; |
| 411 | } |
| 412 | |
| 413 | static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc) |
| 414 | { |
| 415 | void *p = io_u_verify_off(hdr, vc); |
| 416 | struct vhdr_xxhash *vh = hdr_priv(hdr); |
| 417 | uint32_t hash; |
| 418 | void *state; |
| 419 | |
| 420 | dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 421 | |
| 422 | state = XXH32_init(1); |
| 423 | XXH32_update(state, p, hdr->len - hdr_size(hdr)); |
| 424 | hash = XXH32_digest(state); |
| 425 | |
| 426 | if (vh->hash == hash) |
| 427 | return 0; |
| 428 | |
| 429 | vc->name = "xxhash"; |
| 430 | vc->good_crc = &vh->hash; |
| 431 | vc->bad_crc = &hash; |
| 432 | vc->crc_len = sizeof(hash); |
| 433 | log_verify_failure(hdr, vc); |
| 434 | return EILSEQ; |
| 435 | } |
| 436 | |
| 437 | static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc) |
| 438 | { |
| 439 | void *p = io_u_verify_off(hdr, vc); |
| 440 | struct vhdr_sha512 *vh = hdr_priv(hdr); |
| 441 | uint8_t sha512[128]; |
| 442 | struct fio_sha512_ctx sha512_ctx = { |
| 443 | .buf = sha512, |
| 444 | }; |
| 445 | |
| 446 | dprint(FD_VERIFY, "sha512 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 447 | |
| 448 | fio_sha512_init(&sha512_ctx); |
| 449 | fio_sha512_update(&sha512_ctx, p, hdr->len - hdr_size(hdr)); |
| 450 | |
| 451 | if (!memcmp(vh->sha512, sha512_ctx.buf, sizeof(sha512))) |
| 452 | return 0; |
| 453 | |
| 454 | vc->name = "sha512"; |
| 455 | vc->good_crc = vh->sha512; |
| 456 | vc->bad_crc = sha512_ctx.buf; |
| 457 | vc->crc_len = sizeof(vh->sha512); |
| 458 | log_verify_failure(hdr, vc); |
| 459 | return EILSEQ; |
| 460 | } |
| 461 | |
| 462 | static int verify_io_u_sha256(struct verify_header *hdr, struct vcont *vc) |
| 463 | { |
| 464 | void *p = io_u_verify_off(hdr, vc); |
| 465 | struct vhdr_sha256 *vh = hdr_priv(hdr); |
| 466 | uint8_t sha256[64]; |
| 467 | struct fio_sha256_ctx sha256_ctx = { |
| 468 | .buf = sha256, |
| 469 | }; |
| 470 | |
| 471 | dprint(FD_VERIFY, "sha256 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 472 | |
| 473 | fio_sha256_init(&sha256_ctx); |
| 474 | fio_sha256_update(&sha256_ctx, p, hdr->len - hdr_size(hdr)); |
| 475 | |
| 476 | if (!memcmp(vh->sha256, sha256_ctx.buf, sizeof(sha256))) |
| 477 | return 0; |
| 478 | |
| 479 | vc->name = "sha256"; |
| 480 | vc->good_crc = vh->sha256; |
| 481 | vc->bad_crc = sha256_ctx.buf; |
| 482 | vc->crc_len = sizeof(vh->sha256); |
| 483 | log_verify_failure(hdr, vc); |
| 484 | return EILSEQ; |
| 485 | } |
| 486 | |
| 487 | static int verify_io_u_sha1(struct verify_header *hdr, struct vcont *vc) |
| 488 | { |
| 489 | void *p = io_u_verify_off(hdr, vc); |
| 490 | struct vhdr_sha1 *vh = hdr_priv(hdr); |
| 491 | uint32_t sha1[5]; |
| 492 | struct fio_sha1_ctx sha1_ctx = { |
| 493 | .H = sha1, |
| 494 | }; |
| 495 | |
| 496 | dprint(FD_VERIFY, "sha1 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 497 | |
| 498 | fio_sha1_init(&sha1_ctx); |
| 499 | fio_sha1_update(&sha1_ctx, p, hdr->len - hdr_size(hdr)); |
| 500 | |
| 501 | if (!memcmp(vh->sha1, sha1_ctx.H, sizeof(sha1))) |
| 502 | return 0; |
| 503 | |
| 504 | vc->name = "sha1"; |
| 505 | vc->good_crc = vh->sha1; |
| 506 | vc->bad_crc = sha1_ctx.H; |
| 507 | vc->crc_len = sizeof(vh->sha1); |
| 508 | log_verify_failure(hdr, vc); |
| 509 | return EILSEQ; |
| 510 | } |
| 511 | |
| 512 | static int verify_io_u_crc7(struct verify_header *hdr, struct vcont *vc) |
| 513 | { |
| 514 | void *p = io_u_verify_off(hdr, vc); |
| 515 | struct vhdr_crc7 *vh = hdr_priv(hdr); |
| 516 | unsigned char c; |
| 517 | |
| 518 | dprint(FD_VERIFY, "crc7 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 519 | |
| 520 | c = fio_crc7(p, hdr->len - hdr_size(hdr)); |
| 521 | |
| 522 | if (c == vh->crc7) |
| 523 | return 0; |
| 524 | |
| 525 | vc->name = "crc7"; |
| 526 | vc->good_crc = &vh->crc7; |
| 527 | vc->bad_crc = &c; |
| 528 | vc->crc_len = 1; |
| 529 | log_verify_failure(hdr, vc); |
| 530 | return EILSEQ; |
| 531 | } |
| 532 | |
| 533 | static int verify_io_u_crc16(struct verify_header *hdr, struct vcont *vc) |
| 534 | { |
| 535 | void *p = io_u_verify_off(hdr, vc); |
| 536 | struct vhdr_crc16 *vh = hdr_priv(hdr); |
| 537 | unsigned short c; |
| 538 | |
| 539 | dprint(FD_VERIFY, "crc16 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 540 | |
| 541 | c = fio_crc16(p, hdr->len - hdr_size(hdr)); |
| 542 | |
| 543 | if (c == vh->crc16) |
| 544 | return 0; |
| 545 | |
| 546 | vc->name = "crc16"; |
| 547 | vc->good_crc = &vh->crc16; |
| 548 | vc->bad_crc = &c; |
| 549 | vc->crc_len = 2; |
| 550 | log_verify_failure(hdr, vc); |
| 551 | return EILSEQ; |
| 552 | } |
| 553 | |
| 554 | static int verify_io_u_crc64(struct verify_header *hdr, struct vcont *vc) |
| 555 | { |
| 556 | void *p = io_u_verify_off(hdr, vc); |
| 557 | struct vhdr_crc64 *vh = hdr_priv(hdr); |
| 558 | unsigned long long c; |
| 559 | |
| 560 | dprint(FD_VERIFY, "crc64 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 561 | |
| 562 | c = fio_crc64(p, hdr->len - hdr_size(hdr)); |
| 563 | |
| 564 | if (c == vh->crc64) |
| 565 | return 0; |
| 566 | |
| 567 | vc->name = "crc64"; |
| 568 | vc->good_crc = &vh->crc64; |
| 569 | vc->bad_crc = &c; |
| 570 | vc->crc_len = 8; |
| 571 | log_verify_failure(hdr, vc); |
| 572 | return EILSEQ; |
| 573 | } |
| 574 | |
| 575 | static int verify_io_u_crc32(struct verify_header *hdr, struct vcont *vc) |
| 576 | { |
| 577 | void *p = io_u_verify_off(hdr, vc); |
| 578 | struct vhdr_crc32 *vh = hdr_priv(hdr); |
| 579 | uint32_t c; |
| 580 | |
| 581 | dprint(FD_VERIFY, "crc32 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 582 | |
| 583 | c = fio_crc32(p, hdr->len - hdr_size(hdr)); |
| 584 | |
| 585 | if (c == vh->crc32) |
| 586 | return 0; |
| 587 | |
| 588 | vc->name = "crc32"; |
| 589 | vc->good_crc = &vh->crc32; |
| 590 | vc->bad_crc = &c; |
| 591 | vc->crc_len = 4; |
| 592 | log_verify_failure(hdr, vc); |
| 593 | return EILSEQ; |
| 594 | } |
| 595 | |
| 596 | static int verify_io_u_crc32c(struct verify_header *hdr, struct vcont *vc) |
| 597 | { |
| 598 | void *p = io_u_verify_off(hdr, vc); |
| 599 | struct vhdr_crc32 *vh = hdr_priv(hdr); |
| 600 | uint32_t c; |
| 601 | |
| 602 | dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 603 | |
| 604 | c = fio_crc32c(p, hdr->len - hdr_size(hdr)); |
| 605 | |
| 606 | if (c == vh->crc32) |
| 607 | return 0; |
| 608 | |
| 609 | vc->name = "crc32c"; |
| 610 | vc->good_crc = &vh->crc32; |
| 611 | vc->bad_crc = &c; |
| 612 | vc->crc_len = 4; |
| 613 | log_verify_failure(hdr, vc); |
| 614 | return EILSEQ; |
| 615 | } |
| 616 | |
| 617 | static int verify_io_u_md5(struct verify_header *hdr, struct vcont *vc) |
| 618 | { |
| 619 | void *p = io_u_verify_off(hdr, vc); |
| 620 | struct vhdr_md5 *vh = hdr_priv(hdr); |
| 621 | uint32_t hash[MD5_HASH_WORDS]; |
| 622 | struct fio_md5_ctx md5_ctx = { |
| 623 | .hash = hash, |
| 624 | }; |
| 625 | |
| 626 | dprint(FD_VERIFY, "md5 verify io_u %p, len %u\n", vc->io_u, hdr->len); |
| 627 | |
| 628 | fio_md5_init(&md5_ctx); |
| 629 | fio_md5_update(&md5_ctx, p, hdr->len - hdr_size(hdr)); |
| 630 | |
| 631 | if (!memcmp(vh->md5_digest, md5_ctx.hash, sizeof(hash))) |
| 632 | return 0; |
| 633 | |
| 634 | vc->name = "md5"; |
| 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); |
| 639 | return EILSEQ; |
| 640 | } |
| 641 | |
| 642 | /* |
| 643 | * Push IO verification to a separate thread |
| 644 | */ |
| 645 | int verify_io_u_async(struct thread_data *td, struct io_u **io_u_ptr) |
| 646 | { |
| 647 | struct io_u *io_u = *io_u_ptr; |
| 648 | |
| 649 | pthread_mutex_lock(&td->io_u_lock); |
| 650 | |
| 651 | if (io_u->file) |
| 652 | put_file_log(td, io_u->file); |
| 653 | |
| 654 | if (io_u->flags & IO_U_F_IN_CUR_DEPTH) { |
| 655 | td->cur_depth--; |
| 656 | io_u->flags &= ~IO_U_F_IN_CUR_DEPTH; |
| 657 | } |
| 658 | flist_add_tail(&io_u->verify_list, &td->verify_list); |
| 659 | *io_u_ptr = NULL; |
| 660 | pthread_mutex_unlock(&td->io_u_lock); |
| 661 | |
| 662 | pthread_cond_signal(&td->verify_cond); |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u) |
| 667 | { |
| 668 | static char zero_buf[1024]; |
| 669 | unsigned int this_len, len; |
| 670 | int ret = 0; |
| 671 | void *p; |
| 672 | |
| 673 | if (!td->o.trim_zero) |
| 674 | return 0; |
| 675 | |
| 676 | len = io_u->buflen; |
| 677 | p = io_u->buf; |
| 678 | do { |
| 679 | this_len = sizeof(zero_buf); |
| 680 | if (this_len > len) |
| 681 | this_len = len; |
| 682 | if (memcmp(p, zero_buf, this_len)) { |
| 683 | ret = EILSEQ; |
| 684 | break; |
| 685 | } |
| 686 | len -= this_len; |
| 687 | p += this_len; |
| 688 | } while (len); |
| 689 | |
| 690 | if (!ret) |
| 691 | return 0; |
| 692 | |
| 693 | log_err("trim: verify failed at file %s offset %llu, length %lu" |
| 694 | ", block offset %lu\n", |
| 695 | io_u->file->file_name, io_u->offset, io_u->buflen, |
| 696 | (unsigned long) (p - io_u->buf)); |
| 697 | return ret; |
| 698 | } |
| 699 | |
| 700 | static int verify_header(struct io_u *io_u, struct verify_header *hdr, |
| 701 | unsigned int hdr_num, unsigned int hdr_len) |
| 702 | { |
| 703 | void *p = hdr; |
| 704 | uint32_t crc; |
| 705 | |
| 706 | if (hdr->magic != FIO_HDR_MAGIC) { |
| 707 | log_err("verify: bad magic header %x, wanted %x", |
| 708 | hdr->magic, FIO_HDR_MAGIC); |
| 709 | goto err; |
| 710 | } |
| 711 | if (hdr->len != hdr_len) { |
| 712 | log_err("verify: bad header length %u, wanted %u", |
| 713 | hdr->len, hdr_len); |
| 714 | goto err; |
| 715 | } |
| 716 | if (hdr->rand_seed != io_u->rand_seed) { |
| 717 | log_err("verify: bad header rand_seed %"PRIu64 |
| 718 | ", wanted %"PRIu64, |
| 719 | hdr->rand_seed, io_u->rand_seed); |
| 720 | goto err; |
| 721 | } |
| 722 | |
| 723 | crc = fio_crc32c(p, offsetof(struct verify_header, crc32)); |
| 724 | if (crc != hdr->crc32) { |
| 725 | log_err("verify: bad header crc %x, calculated %x", |
| 726 | hdr->crc32, crc); |
| 727 | goto err; |
| 728 | } |
| 729 | return 0; |
| 730 | |
| 731 | err: |
| 732 | log_err(" at file %s offset %llu, length %u\n", |
| 733 | io_u->file->file_name, |
| 734 | io_u->offset + hdr_num * hdr_len, hdr_len); |
| 735 | return EILSEQ; |
| 736 | } |
| 737 | |
| 738 | int verify_io_u(struct thread_data *td, struct io_u **io_u_ptr) |
| 739 | { |
| 740 | struct verify_header *hdr; |
| 741 | struct io_u *io_u = *io_u_ptr; |
| 742 | unsigned int header_size, hdr_inc, hdr_num = 0; |
| 743 | void *p; |
| 744 | int ret; |
| 745 | |
| 746 | if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ) |
| 747 | return 0; |
| 748 | /* |
| 749 | * If the IO engine is faking IO (like null), then just pretend |
| 750 | * we verified everything. |
| 751 | */ |
| 752 | if (td->io_ops->flags & FIO_FAKEIO) |
| 753 | return 0; |
| 754 | |
| 755 | if (io_u->flags & IO_U_F_TRIMMED) { |
| 756 | ret = verify_trimmed_io_u(td, io_u); |
| 757 | goto done; |
| 758 | } |
| 759 | |
| 760 | hdr_inc = get_hdr_inc(td, io_u); |
| 761 | |
| 762 | ret = 0; |
| 763 | for (p = io_u->buf; p < io_u->buf + io_u->buflen; |
| 764 | p += hdr_inc, hdr_num++) { |
| 765 | struct vcont vc = { |
| 766 | .io_u = io_u, |
| 767 | .hdr_num = hdr_num, |
| 768 | .td = td, |
| 769 | }; |
| 770 | unsigned int verify_type; |
| 771 | |
| 772 | if (ret && td->o.verify_fatal) |
| 773 | break; |
| 774 | |
| 775 | header_size = __hdr_size(td->o.verify); |
| 776 | if (td->o.verify_offset) |
| 777 | memswp(p, p + td->o.verify_offset, header_size); |
| 778 | hdr = p; |
| 779 | |
| 780 | /* |
| 781 | * Make rand_seed check pass when have verifysort or |
| 782 | * verify_backlog. |
| 783 | */ |
| 784 | if (td->o.verifysort || (td->flags & TD_F_VER_BACKLOG)) |
| 785 | io_u->rand_seed = hdr->rand_seed; |
| 786 | |
| 787 | ret = verify_header(io_u, hdr, hdr_num, hdr_inc); |
| 788 | if (ret) |
| 789 | return ret; |
| 790 | |
| 791 | if (td->o.verify != VERIFY_NONE) |
| 792 | verify_type = td->o.verify; |
| 793 | else |
| 794 | verify_type = hdr->verify_type; |
| 795 | |
| 796 | switch (verify_type) { |
| 797 | case VERIFY_MD5: |
| 798 | ret = verify_io_u_md5(hdr, &vc); |
| 799 | break; |
| 800 | case VERIFY_CRC64: |
| 801 | ret = verify_io_u_crc64(hdr, &vc); |
| 802 | break; |
| 803 | case VERIFY_CRC32C: |
| 804 | case VERIFY_CRC32C_INTEL: |
| 805 | ret = verify_io_u_crc32c(hdr, &vc); |
| 806 | break; |
| 807 | case VERIFY_CRC32: |
| 808 | ret = verify_io_u_crc32(hdr, &vc); |
| 809 | break; |
| 810 | case VERIFY_CRC16: |
| 811 | ret = verify_io_u_crc16(hdr, &vc); |
| 812 | break; |
| 813 | case VERIFY_CRC7: |
| 814 | ret = verify_io_u_crc7(hdr, &vc); |
| 815 | break; |
| 816 | case VERIFY_SHA256: |
| 817 | ret = verify_io_u_sha256(hdr, &vc); |
| 818 | break; |
| 819 | case VERIFY_SHA512: |
| 820 | ret = verify_io_u_sha512(hdr, &vc); |
| 821 | break; |
| 822 | case VERIFY_XXHASH: |
| 823 | ret = verify_io_u_xxhash(hdr, &vc); |
| 824 | break; |
| 825 | case VERIFY_META: |
| 826 | ret = verify_io_u_meta(hdr, &vc); |
| 827 | break; |
| 828 | case VERIFY_SHA1: |
| 829 | ret = verify_io_u_sha1(hdr, &vc); |
| 830 | break; |
| 831 | case VERIFY_PATTERN: |
| 832 | ret = verify_io_u_pattern(hdr, &vc); |
| 833 | break; |
| 834 | default: |
| 835 | log_err("Bad verify type %u\n", hdr->verify_type); |
| 836 | ret = EINVAL; |
| 837 | } |
| 838 | |
| 839 | if (ret && verify_type != hdr->verify_type) |
| 840 | log_err("fio: verify type mismatch (%u media, %u given)\n", |
| 841 | hdr->verify_type, verify_type); |
| 842 | } |
| 843 | |
| 844 | done: |
| 845 | if (ret && td->o.verify_fatal) |
| 846 | fio_mark_td_terminate(td); |
| 847 | |
| 848 | return ret; |
| 849 | } |
| 850 | |
| 851 | static void fill_meta(struct verify_header *hdr, struct thread_data *td, |
| 852 | struct io_u *io_u, unsigned int header_num) |
| 853 | { |
| 854 | struct vhdr_meta *vh = hdr_priv(hdr); |
| 855 | |
| 856 | vh->thread = td->thread_number; |
| 857 | |
| 858 | vh->time_sec = io_u->start_time.tv_sec; |
| 859 | vh->time_usec = io_u->start_time.tv_usec; |
| 860 | |
| 861 | vh->numberio = io_u->numberio; |
| 862 | |
| 863 | vh->offset = io_u->offset + header_num * td->o.verify_interval; |
| 864 | } |
| 865 | |
| 866 | static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len) |
| 867 | { |
| 868 | struct vhdr_xxhash *vh = hdr_priv(hdr); |
| 869 | void *state; |
| 870 | |
| 871 | state = XXH32_init(1); |
| 872 | XXH32_update(state, p, len); |
| 873 | vh->hash = XXH32_digest(state); |
| 874 | } |
| 875 | |
| 876 | static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len) |
| 877 | { |
| 878 | struct vhdr_sha512 *vh = hdr_priv(hdr); |
| 879 | struct fio_sha512_ctx sha512_ctx = { |
| 880 | .buf = vh->sha512, |
| 881 | }; |
| 882 | |
| 883 | fio_sha512_init(&sha512_ctx); |
| 884 | fio_sha512_update(&sha512_ctx, p, len); |
| 885 | } |
| 886 | |
| 887 | static void fill_sha256(struct verify_header *hdr, void *p, unsigned int len) |
| 888 | { |
| 889 | struct vhdr_sha256 *vh = hdr_priv(hdr); |
| 890 | struct fio_sha256_ctx sha256_ctx = { |
| 891 | .buf = vh->sha256, |
| 892 | }; |
| 893 | |
| 894 | fio_sha256_init(&sha256_ctx); |
| 895 | fio_sha256_update(&sha256_ctx, p, len); |
| 896 | } |
| 897 | |
| 898 | static void fill_sha1(struct verify_header *hdr, void *p, unsigned int len) |
| 899 | { |
| 900 | struct vhdr_sha1 *vh = hdr_priv(hdr); |
| 901 | struct fio_sha1_ctx sha1_ctx = { |
| 902 | .H = vh->sha1, |
| 903 | }; |
| 904 | |
| 905 | fio_sha1_init(&sha1_ctx); |
| 906 | fio_sha1_update(&sha1_ctx, p, len); |
| 907 | } |
| 908 | |
| 909 | static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len) |
| 910 | { |
| 911 | struct vhdr_crc7 *vh = hdr_priv(hdr); |
| 912 | |
| 913 | vh->crc7 = fio_crc7(p, len); |
| 914 | } |
| 915 | |
| 916 | static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len) |
| 917 | { |
| 918 | struct vhdr_crc16 *vh = hdr_priv(hdr); |
| 919 | |
| 920 | vh->crc16 = fio_crc16(p, len); |
| 921 | } |
| 922 | |
| 923 | static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len) |
| 924 | { |
| 925 | struct vhdr_crc32 *vh = hdr_priv(hdr); |
| 926 | |
| 927 | vh->crc32 = fio_crc32(p, len); |
| 928 | } |
| 929 | |
| 930 | static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len) |
| 931 | { |
| 932 | struct vhdr_crc32 *vh = hdr_priv(hdr); |
| 933 | |
| 934 | vh->crc32 = fio_crc32c(p, len); |
| 935 | } |
| 936 | |
| 937 | static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len) |
| 938 | { |
| 939 | struct vhdr_crc64 *vh = hdr_priv(hdr); |
| 940 | |
| 941 | vh->crc64 = fio_crc64(p, len); |
| 942 | } |
| 943 | |
| 944 | static void fill_md5(struct verify_header *hdr, void *p, unsigned int len) |
| 945 | { |
| 946 | struct vhdr_md5 *vh = hdr_priv(hdr); |
| 947 | struct fio_md5_ctx md5_ctx = { |
| 948 | .hash = (uint32_t *) vh->md5_digest, |
| 949 | }; |
| 950 | |
| 951 | fio_md5_init(&md5_ctx); |
| 952 | fio_md5_update(&md5_ctx, p, len); |
| 953 | } |
| 954 | |
| 955 | static void populate_hdr(struct thread_data *td, struct io_u *io_u, |
| 956 | struct verify_header *hdr, unsigned int header_num, |
| 957 | unsigned int header_len) |
| 958 | { |
| 959 | unsigned int data_len; |
| 960 | void *data, *p; |
| 961 | |
| 962 | p = (void *) hdr; |
| 963 | |
| 964 | hdr->magic = FIO_HDR_MAGIC; |
| 965 | hdr->verify_type = td->o.verify; |
| 966 | hdr->len = header_len; |
| 967 | hdr->rand_seed = io_u->rand_seed; |
| 968 | hdr->crc32 = fio_crc32c(p, offsetof(struct verify_header, crc32)); |
| 969 | |
| 970 | data_len = header_len - hdr_size(hdr); |
| 971 | |
| 972 | data = p + hdr_size(hdr); |
| 973 | switch (td->o.verify) { |
| 974 | case VERIFY_MD5: |
| 975 | dprint(FD_VERIFY, "fill md5 io_u %p, len %u\n", |
| 976 | io_u, hdr->len); |
| 977 | fill_md5(hdr, data, data_len); |
| 978 | break; |
| 979 | case VERIFY_CRC64: |
| 980 | dprint(FD_VERIFY, "fill crc64 io_u %p, len %u\n", |
| 981 | io_u, hdr->len); |
| 982 | fill_crc64(hdr, data, data_len); |
| 983 | break; |
| 984 | case VERIFY_CRC32C: |
| 985 | case VERIFY_CRC32C_INTEL: |
| 986 | dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n", |
| 987 | io_u, hdr->len); |
| 988 | fill_crc32c(hdr, data, data_len); |
| 989 | break; |
| 990 | case VERIFY_CRC32: |
| 991 | dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n", |
| 992 | io_u, hdr->len); |
| 993 | fill_crc32(hdr, data, data_len); |
| 994 | break; |
| 995 | case VERIFY_CRC16: |
| 996 | dprint(FD_VERIFY, "fill crc16 io_u %p, len %u\n", |
| 997 | io_u, hdr->len); |
| 998 | fill_crc16(hdr, data, data_len); |
| 999 | break; |
| 1000 | case VERIFY_CRC7: |
| 1001 | dprint(FD_VERIFY, "fill crc7 io_u %p, len %u\n", |
| 1002 | io_u, hdr->len); |
| 1003 | fill_crc7(hdr, data, data_len); |
| 1004 | break; |
| 1005 | case VERIFY_SHA256: |
| 1006 | dprint(FD_VERIFY, "fill sha256 io_u %p, len %u\n", |
| 1007 | io_u, hdr->len); |
| 1008 | fill_sha256(hdr, data, data_len); |
| 1009 | break; |
| 1010 | case VERIFY_SHA512: |
| 1011 | dprint(FD_VERIFY, "fill sha512 io_u %p, len %u\n", |
| 1012 | io_u, hdr->len); |
| 1013 | fill_sha512(hdr, data, data_len); |
| 1014 | break; |
| 1015 | case VERIFY_XXHASH: |
| 1016 | dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n", |
| 1017 | io_u, hdr->len); |
| 1018 | fill_xxhash(hdr, data, data_len); |
| 1019 | break; |
| 1020 | case VERIFY_META: |
| 1021 | dprint(FD_VERIFY, "fill meta io_u %p, len %u\n", |
| 1022 | io_u, hdr->len); |
| 1023 | fill_meta(hdr, td, io_u, header_num); |
| 1024 | break; |
| 1025 | case VERIFY_SHA1: |
| 1026 | dprint(FD_VERIFY, "fill sha1 io_u %p, len %u\n", |
| 1027 | io_u, hdr->len); |
| 1028 | fill_sha1(hdr, data, data_len); |
| 1029 | break; |
| 1030 | case VERIFY_PATTERN: |
| 1031 | /* nothing to do here */ |
| 1032 | break; |
| 1033 | default: |
| 1034 | log_err("fio: bad verify type: %d\n", td->o.verify); |
| 1035 | assert(0); |
| 1036 | } |
| 1037 | if (td->o.verify_offset) |
| 1038 | memswp(p, p + td->o.verify_offset, hdr_size(hdr)); |
| 1039 | } |
| 1040 | |
| 1041 | /* |
| 1042 | * fill body of io_u->buf with random data and add a header with the |
| 1043 | * checksum of choice |
| 1044 | */ |
| 1045 | void populate_verify_io_u(struct thread_data *td, struct io_u *io_u) |
| 1046 | { |
| 1047 | if (td->o.verify == VERIFY_NULL) |
| 1048 | return; |
| 1049 | |
| 1050 | io_u->numberio = td->io_issues[io_u->ddir]; |
| 1051 | |
| 1052 | fill_pattern_headers(td, io_u, 0, 0); |
| 1053 | } |
| 1054 | |
| 1055 | int get_next_verify(struct thread_data *td, struct io_u *io_u) |
| 1056 | { |
| 1057 | struct io_piece *ipo = NULL; |
| 1058 | |
| 1059 | /* |
| 1060 | * this io_u is from a requeue, we already filled the offsets |
| 1061 | */ |
| 1062 | if (io_u->file) |
| 1063 | return 0; |
| 1064 | |
| 1065 | if (!RB_EMPTY_ROOT(&td->io_hist_tree)) { |
| 1066 | struct rb_node *n = rb_first(&td->io_hist_tree); |
| 1067 | |
| 1068 | ipo = rb_entry(n, struct io_piece, rb_node); |
| 1069 | |
| 1070 | /* |
| 1071 | * Ensure that the associated IO has completed |
| 1072 | */ |
| 1073 | read_barrier(); |
| 1074 | if (ipo->flags & IP_F_IN_FLIGHT) |
| 1075 | goto nothing; |
| 1076 | |
| 1077 | rb_erase(n, &td->io_hist_tree); |
| 1078 | assert(ipo->flags & IP_F_ONRB); |
| 1079 | ipo->flags &= ~IP_F_ONRB; |
| 1080 | } else if (!flist_empty(&td->io_hist_list)) { |
| 1081 | ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list); |
| 1082 | |
| 1083 | /* |
| 1084 | * Ensure that the associated IO has completed |
| 1085 | */ |
| 1086 | read_barrier(); |
| 1087 | if (ipo->flags & IP_F_IN_FLIGHT) |
| 1088 | goto nothing; |
| 1089 | |
| 1090 | flist_del(&ipo->list); |
| 1091 | assert(ipo->flags & IP_F_ONLIST); |
| 1092 | ipo->flags &= ~IP_F_ONLIST; |
| 1093 | } |
| 1094 | |
| 1095 | if (ipo) { |
| 1096 | td->io_hist_len--; |
| 1097 | |
| 1098 | io_u->offset = ipo->offset; |
| 1099 | io_u->buflen = ipo->len; |
| 1100 | io_u->numberio = ipo->numberio; |
| 1101 | io_u->file = ipo->file; |
| 1102 | io_u->flags |= IO_U_F_VER_LIST; |
| 1103 | |
| 1104 | if (ipo->flags & IP_F_TRIMMED) |
| 1105 | io_u->flags |= IO_U_F_TRIMMED; |
| 1106 | |
| 1107 | if (!fio_file_open(io_u->file)) { |
| 1108 | int r = td_io_open_file(td, io_u->file); |
| 1109 | |
| 1110 | if (r) { |
| 1111 | dprint(FD_VERIFY, "failed file %s open\n", |
| 1112 | io_u->file->file_name); |
| 1113 | return 1; |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | get_file(ipo->file); |
| 1118 | assert(fio_file_open(io_u->file)); |
| 1119 | io_u->ddir = DDIR_READ; |
| 1120 | io_u->xfer_buf = io_u->buf; |
| 1121 | io_u->xfer_buflen = io_u->buflen; |
| 1122 | |
| 1123 | remove_trim_entry(td, ipo); |
| 1124 | free(ipo); |
| 1125 | dprint(FD_VERIFY, "get_next_verify: ret io_u %p\n", io_u); |
| 1126 | |
| 1127 | if (!td->o.verify_pattern_bytes) { |
| 1128 | io_u->rand_seed = __rand(&td->verify_state); |
| 1129 | if (sizeof(int) != sizeof(long *)) |
| 1130 | io_u->rand_seed *= __rand(&td->verify_state); |
| 1131 | } |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
| 1135 | nothing: |
| 1136 | dprint(FD_VERIFY, "get_next_verify: empty\n"); |
| 1137 | return 1; |
| 1138 | } |
| 1139 | |
| 1140 | void fio_verify_init(struct thread_data *td) |
| 1141 | { |
| 1142 | if (td->o.verify == VERIFY_CRC32C_INTEL || |
| 1143 | td->o.verify == VERIFY_CRC32C) { |
| 1144 | crc32c_intel_probe(); |
| 1145 | } |
| 1146 | } |
| 1147 | |
| 1148 | static void *verify_async_thread(void *data) |
| 1149 | { |
| 1150 | struct thread_data *td = data; |
| 1151 | struct io_u *io_u; |
| 1152 | int ret = 0; |
| 1153 | |
| 1154 | if (fio_option_is_set(&td->o, verify_cpumask) && |
| 1155 | fio_setaffinity(td->pid, td->o.verify_cpumask)) { |
| 1156 | log_err("fio: failed setting verify thread affinity\n"); |
| 1157 | goto done; |
| 1158 | } |
| 1159 | |
| 1160 | do { |
| 1161 | FLIST_HEAD(list); |
| 1162 | |
| 1163 | read_barrier(); |
| 1164 | if (td->verify_thread_exit) |
| 1165 | break; |
| 1166 | |
| 1167 | pthread_mutex_lock(&td->io_u_lock); |
| 1168 | |
| 1169 | while (flist_empty(&td->verify_list) && |
| 1170 | !td->verify_thread_exit) { |
| 1171 | ret = pthread_cond_wait(&td->verify_cond, |
| 1172 | &td->io_u_lock); |
| 1173 | if (ret) { |
| 1174 | pthread_mutex_unlock(&td->io_u_lock); |
| 1175 | break; |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | flist_splice_init(&td->verify_list, &list); |
| 1180 | pthread_mutex_unlock(&td->io_u_lock); |
| 1181 | |
| 1182 | if (flist_empty(&list)) |
| 1183 | continue; |
| 1184 | |
| 1185 | while (!flist_empty(&list)) { |
| 1186 | io_u = flist_first_entry(&list, struct io_u, verify_list); |
| 1187 | flist_del_init(&io_u->verify_list); |
| 1188 | |
| 1189 | io_u->flags |= IO_U_F_NO_FILE_PUT; |
| 1190 | ret = verify_io_u(td, &io_u); |
| 1191 | |
| 1192 | put_io_u(td, io_u); |
| 1193 | if (!ret) |
| 1194 | continue; |
| 1195 | if (td_non_fatal_error(td, ERROR_TYPE_VERIFY_BIT, ret)) { |
| 1196 | update_error_count(td, ret); |
| 1197 | td_clear_error(td); |
| 1198 | ret = 0; |
| 1199 | } |
| 1200 | } |
| 1201 | } while (!ret); |
| 1202 | |
| 1203 | if (ret) { |
| 1204 | td_verror(td, ret, "async_verify"); |
| 1205 | if (td->o.verify_fatal) |
| 1206 | fio_mark_td_terminate(td); |
| 1207 | } |
| 1208 | |
| 1209 | done: |
| 1210 | pthread_mutex_lock(&td->io_u_lock); |
| 1211 | td->nr_verify_threads--; |
| 1212 | pthread_mutex_unlock(&td->io_u_lock); |
| 1213 | |
| 1214 | pthread_cond_signal(&td->free_cond); |
| 1215 | return NULL; |
| 1216 | } |
| 1217 | |
| 1218 | int verify_async_init(struct thread_data *td) |
| 1219 | { |
| 1220 | int i, ret; |
| 1221 | pthread_attr_t attr; |
| 1222 | |
| 1223 | pthread_attr_init(&attr); |
| 1224 | pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN); |
| 1225 | |
| 1226 | td->verify_thread_exit = 0; |
| 1227 | |
| 1228 | td->verify_threads = malloc(sizeof(pthread_t) * td->o.verify_async); |
| 1229 | for (i = 0; i < td->o.verify_async; i++) { |
| 1230 | ret = pthread_create(&td->verify_threads[i], &attr, |
| 1231 | verify_async_thread, td); |
| 1232 | if (ret) { |
| 1233 | log_err("fio: async verify creation failed: %s\n", |
| 1234 | strerror(ret)); |
| 1235 | break; |
| 1236 | } |
| 1237 | ret = pthread_detach(td->verify_threads[i]); |
| 1238 | if (ret) { |
| 1239 | log_err("fio: async verify thread detach failed: %s\n", |
| 1240 | strerror(ret)); |
| 1241 | break; |
| 1242 | } |
| 1243 | td->nr_verify_threads++; |
| 1244 | } |
| 1245 | |
| 1246 | pthread_attr_destroy(&attr); |
| 1247 | |
| 1248 | if (i != td->o.verify_async) { |
| 1249 | log_err("fio: only %d verify threads started, exiting\n", i); |
| 1250 | td->verify_thread_exit = 1; |
| 1251 | write_barrier(); |
| 1252 | pthread_cond_broadcast(&td->verify_cond); |
| 1253 | return 1; |
| 1254 | } |
| 1255 | |
| 1256 | return 0; |
| 1257 | } |
| 1258 | |
| 1259 | void verify_async_exit(struct thread_data *td) |
| 1260 | { |
| 1261 | td->verify_thread_exit = 1; |
| 1262 | write_barrier(); |
| 1263 | pthread_cond_broadcast(&td->verify_cond); |
| 1264 | |
| 1265 | pthread_mutex_lock(&td->io_u_lock); |
| 1266 | |
| 1267 | while (td->nr_verify_threads) |
| 1268 | pthread_cond_wait(&td->free_cond, &td->io_u_lock); |
| 1269 | |
| 1270 | pthread_mutex_unlock(&td->io_u_lock); |
| 1271 | free(td->verify_threads); |
| 1272 | td->verify_threads = NULL; |
| 1273 | } |
| 1274 | |
| 1275 | struct all_io_list *get_all_io_list(int save_mask, size_t *sz) |
| 1276 | { |
| 1277 | struct all_io_list *rep; |
| 1278 | struct thread_data *td; |
| 1279 | size_t depth; |
| 1280 | void *next; |
| 1281 | int i, nr; |
| 1282 | |
| 1283 | compiletime_assert(sizeof(struct all_io_list) == 8, "all_io_list"); |
| 1284 | |
| 1285 | /* |
| 1286 | * Calculate reply space needed. We need one 'io_state' per thread, |
| 1287 | * and the size will vary depending on depth. |
| 1288 | */ |
| 1289 | depth = 0; |
| 1290 | nr = 0; |
| 1291 | for_each_td(td, i) { |
| 1292 | if (save_mask != IO_LIST_ALL && (i + 1) != save_mask) |
| 1293 | continue; |
| 1294 | td->stop_io = 1; |
| 1295 | td->flags |= TD_F_VSTATE_SAVED; |
| 1296 | depth += td->o.iodepth; |
| 1297 | nr++; |
| 1298 | } |
| 1299 | |
| 1300 | if (!nr) |
| 1301 | return NULL; |
| 1302 | |
| 1303 | *sz = sizeof(*rep); |
| 1304 | *sz += nr * sizeof(struct thread_io_list); |
| 1305 | *sz += depth * sizeof(uint64_t); |
| 1306 | rep = malloc(*sz); |
| 1307 | |
| 1308 | rep->threads = cpu_to_le64((uint64_t) nr); |
| 1309 | |
| 1310 | next = &rep->state[0]; |
| 1311 | for_each_td(td, i) { |
| 1312 | struct thread_io_list *s = next; |
| 1313 | unsigned int comps; |
| 1314 | |
| 1315 | if (save_mask != IO_LIST_ALL && (i + 1) != save_mask) |
| 1316 | continue; |
| 1317 | |
| 1318 | if (td->last_write_comp) { |
| 1319 | int j, k; |
| 1320 | |
| 1321 | if (td->io_blocks[DDIR_WRITE] < td->o.iodepth) |
| 1322 | comps = td->io_blocks[DDIR_WRITE]; |
| 1323 | else |
| 1324 | comps = td->o.iodepth; |
| 1325 | |
| 1326 | k = td->last_write_idx - 1; |
| 1327 | for (j = 0; j < comps; j++) { |
| 1328 | if (k == -1) |
| 1329 | k = td->o.iodepth - 1; |
| 1330 | s->offsets[j] = cpu_to_le64(td->last_write_comp[k]); |
| 1331 | k--; |
| 1332 | } |
| 1333 | } else |
| 1334 | comps = 0; |
| 1335 | |
| 1336 | s->no_comps = cpu_to_le64((uint64_t) comps); |
| 1337 | s->depth = cpu_to_le64((uint64_t) td->o.iodepth); |
| 1338 | s->numberio = cpu_to_le64((uint64_t) td->io_issues[DDIR_WRITE]); |
| 1339 | s->index = cpu_to_le64((uint64_t) i); |
| 1340 | s->rand.s[0] = cpu_to_le32(td->random_state.s1); |
| 1341 | s->rand.s[1] = cpu_to_le32(td->random_state.s2); |
| 1342 | s->rand.s[2] = cpu_to_le32(td->random_state.s3); |
| 1343 | s->rand.s[3] = 0; |
| 1344 | strncpy((char *) s->name, td->o.name, sizeof(s->name)); |
| 1345 | next = io_list_next(s); |
| 1346 | } |
| 1347 | |
| 1348 | return rep; |
| 1349 | } |
| 1350 | |
| 1351 | static int open_state_file(const char *name, const char *prefix, int num, |
| 1352 | int for_write) |
| 1353 | { |
| 1354 | char out[64]; |
| 1355 | int flags; |
| 1356 | int fd; |
| 1357 | |
| 1358 | if (for_write) |
| 1359 | flags = O_CREAT | O_TRUNC | O_WRONLY | O_SYNC; |
| 1360 | else |
| 1361 | flags = O_RDONLY; |
| 1362 | |
| 1363 | verify_state_gen_name(out, sizeof(out), name, prefix, num); |
| 1364 | |
| 1365 | fd = open(out, flags, 0644); |
| 1366 | if (fd == -1) { |
| 1367 | perror("fio: open state file"); |
| 1368 | return -1; |
| 1369 | } |
| 1370 | |
| 1371 | return fd; |
| 1372 | } |
| 1373 | |
| 1374 | static int write_thread_list_state(struct thread_io_list *s, |
| 1375 | const char *prefix) |
| 1376 | { |
| 1377 | struct verify_state_hdr hdr; |
| 1378 | uint64_t crc; |
| 1379 | ssize_t ret; |
| 1380 | int fd; |
| 1381 | |
| 1382 | fd = open_state_file((const char *) s->name, prefix, s->index, 1); |
| 1383 | if (fd == -1) |
| 1384 | return 1; |
| 1385 | |
| 1386 | crc = fio_crc32c((void *)s, thread_io_list_sz(s)); |
| 1387 | |
| 1388 | hdr.version = cpu_to_le64((uint64_t) VSTATE_HDR_VERSION); |
| 1389 | hdr.size = cpu_to_le64((uint64_t) thread_io_list_sz(s)); |
| 1390 | hdr.crc = cpu_to_le64(crc); |
| 1391 | ret = write(fd, &hdr, sizeof(hdr)); |
| 1392 | if (ret != sizeof(hdr)) |
| 1393 | goto write_fail; |
| 1394 | |
| 1395 | ret = write(fd, s, thread_io_list_sz(s)); |
| 1396 | if (ret != thread_io_list_sz(s)) { |
| 1397 | write_fail: |
| 1398 | if (ret < 0) |
| 1399 | perror("fio: write state file"); |
| 1400 | log_err("fio: failed to write state file\n"); |
| 1401 | ret = 1; |
| 1402 | } else |
| 1403 | ret = 0; |
| 1404 | |
| 1405 | close(fd); |
| 1406 | return ret; |
| 1407 | } |
| 1408 | |
| 1409 | void __verify_save_state(struct all_io_list *state, const char *prefix) |
| 1410 | { |
| 1411 | struct thread_io_list *s = &state->state[0]; |
| 1412 | unsigned int i; |
| 1413 | |
| 1414 | for (i = 0; i < le64_to_cpu(state->threads); i++) { |
| 1415 | write_thread_list_state(s, prefix); |
| 1416 | s = io_list_next(s); |
| 1417 | } |
| 1418 | } |
| 1419 | |
| 1420 | void verify_save_state(void) |
| 1421 | { |
| 1422 | struct all_io_list *state; |
| 1423 | size_t sz; |
| 1424 | |
| 1425 | state = get_all_io_list(IO_LIST_ALL, &sz); |
| 1426 | if (state) { |
| 1427 | __verify_save_state(state, "local"); |
| 1428 | free(state); |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | void verify_free_state(struct thread_data *td) |
| 1433 | { |
| 1434 | if (td->vstate) |
| 1435 | free(td->vstate); |
| 1436 | } |
| 1437 | |
| 1438 | void verify_convert_assign_state(struct thread_data *td, |
| 1439 | struct thread_io_list *s) |
| 1440 | { |
| 1441 | int i; |
| 1442 | |
| 1443 | s->no_comps = le64_to_cpu(s->no_comps); |
| 1444 | s->depth = le64_to_cpu(s->depth); |
| 1445 | s->numberio = le64_to_cpu(s->numberio); |
| 1446 | for (i = 0; i < 4; i++) |
| 1447 | s->rand.s[i] = le32_to_cpu(s->rand.s[i]); |
| 1448 | for (i = 0; i < s->no_comps; i++) |
| 1449 | s->offsets[i] = le64_to_cpu(s->offsets[i]); |
| 1450 | |
| 1451 | td->vstate = s; |
| 1452 | } |
| 1453 | |
| 1454 | int verify_state_hdr(struct verify_state_hdr *hdr, struct thread_io_list *s) |
| 1455 | { |
| 1456 | uint64_t crc; |
| 1457 | |
| 1458 | hdr->version = le64_to_cpu(hdr->version); |
| 1459 | hdr->size = le64_to_cpu(hdr->size); |
| 1460 | hdr->crc = le64_to_cpu(hdr->crc); |
| 1461 | |
| 1462 | if (hdr->version != VSTATE_HDR_VERSION) |
| 1463 | return 1; |
| 1464 | |
| 1465 | crc = fio_crc32c((void *)s, hdr->size); |
| 1466 | if (crc != hdr->crc) |
| 1467 | return 1; |
| 1468 | |
| 1469 | return 0; |
| 1470 | } |
| 1471 | |
| 1472 | int verify_load_state(struct thread_data *td, const char *prefix) |
| 1473 | { |
| 1474 | struct thread_io_list *s = NULL; |
| 1475 | struct verify_state_hdr hdr; |
| 1476 | uint64_t crc; |
| 1477 | ssize_t ret; |
| 1478 | int fd; |
| 1479 | |
| 1480 | if (!td->o.verify_state) |
| 1481 | return 0; |
| 1482 | |
| 1483 | fd = open_state_file(td->o.name, prefix, td->thread_number - 1, 0); |
| 1484 | if (fd == -1) |
| 1485 | return 1; |
| 1486 | |
| 1487 | ret = read(fd, &hdr, sizeof(hdr)); |
| 1488 | if (ret != sizeof(hdr)) { |
| 1489 | if (ret < 0) |
| 1490 | td_verror(td, errno, "read verify state hdr"); |
| 1491 | log_err("fio: failed reading verify state header\n"); |
| 1492 | goto err; |
| 1493 | } |
| 1494 | |
| 1495 | hdr.version = le64_to_cpu(hdr.version); |
| 1496 | hdr.size = le64_to_cpu(hdr.size); |
| 1497 | hdr.crc = le64_to_cpu(hdr.crc); |
| 1498 | |
| 1499 | if (hdr.version != VSTATE_HDR_VERSION) { |
| 1500 | log_err("fio: bad version in verify state header\n"); |
| 1501 | goto err; |
| 1502 | } |
| 1503 | |
| 1504 | s = malloc(hdr.size); |
| 1505 | ret = read(fd, s, hdr.size); |
| 1506 | if (ret != hdr.size) { |
| 1507 | if (ret < 0) |
| 1508 | td_verror(td, errno, "read verify state"); |
| 1509 | log_err("fio: failed reading verity state\n"); |
| 1510 | goto err; |
| 1511 | } |
| 1512 | |
| 1513 | crc = fio_crc32c((void *)s, hdr.size); |
| 1514 | if (crc != hdr.crc) { |
| 1515 | log_err("fio: verify state is corrupt\n"); |
| 1516 | goto err; |
| 1517 | } |
| 1518 | |
| 1519 | close(fd); |
| 1520 | |
| 1521 | verify_convert_assign_state(td, s); |
| 1522 | return 0; |
| 1523 | err: |
| 1524 | if (s) |
| 1525 | free(s); |
| 1526 | close(fd); |
| 1527 | return 1; |
| 1528 | } |
| 1529 | |
| 1530 | /* |
| 1531 | * Use the loaded verify state to know when to stop doing verification |
| 1532 | */ |
| 1533 | int verify_state_should_stop(struct thread_data *td, struct io_u *io_u) |
| 1534 | { |
| 1535 | struct thread_io_list *s = td->vstate; |
| 1536 | int i; |
| 1537 | |
| 1538 | if (!s) |
| 1539 | return 0; |
| 1540 | |
| 1541 | /* |
| 1542 | * If we're not into the window of issues - depth yet, continue |
| 1543 | */ |
| 1544 | if (td->io_blocks[DDIR_READ] < s->depth || |
| 1545 | s->numberio - td->io_blocks[DDIR_READ] > s->depth) |
| 1546 | return 0; |
| 1547 | |
| 1548 | /* |
| 1549 | * We're in the window of having to check if this io was |
| 1550 | * completed or not. If the IO was seen as completed, then |
| 1551 | * lets verify it. |
| 1552 | */ |
| 1553 | for (i = 0; i < s->no_comps; i++) |
| 1554 | if (io_u->offset == s->offsets[i]) |
| 1555 | return 0; |
| 1556 | |
| 1557 | /* |
| 1558 | * Not found, we have to stop |
| 1559 | */ |
| 1560 | return 1; |
| 1561 | } |