options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch (a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return a - base;
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_options *o, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         o->bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == o->bssplit_nr[ddir]) {
  88                         o->bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, o->bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1U;
 102                 } else
 103                         perc = -1U;
 104
 105                 if (str_to_decimal(fname, &val, 1, o, 0, 0)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         o->bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == -1U)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100 && perc_missing > 1) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141
 142         /*
 143          * If values didn't have a percentage set, divide the remains between
 144          * them.
 145          */
 146         if (perc_missing) {
 147                 if (perc_missing == 1 && o->bssplit_nr[ddir] == 1)
 148                         perc = 100;
 149                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 150                         struct bssplit *bsp = &bssplit[i];
 151
 152                         if (bsp->perc == -1U)
 153                                 bsp->perc = (100 - perc) / perc_missing;
 154                 }
 155         }
 156
 157         o->min_bs[ddir] = min_bs;
 158         o->max_bs[ddir] = max_bs;
 159
 160         /*
 161          * now sort based on percentages, for ease of lookup
 162          */
 163         qsort(bssplit, o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 164         o->bssplit[ddir] = bssplit;
 165         return 0;
 166 }
 167
 168 static int str_bssplit_cb(void *data, const char *input)
 169 {
 170         struct thread_data *td = data;
 171         char *str, *p, *odir, *ddir;
 172         int ret = 0;
 173
 174         if (parse_dryrun())
 175                 return 0;
 176
 177         p = str = strdup(input);
 178
 179         strip_blank_front(&str);
 180         strip_blank_end(str);
 181
 182         odir = strchr(str, ',');
 183         if (odir) {
 184                 ddir = strchr(odir + 1, ',');
 185                 if (ddir) {
 186                         ret = bssplit_ddir(&td->o, DDIR_TRIM, ddir + 1);
 187                         if (!ret)
 188                                 *ddir = '\0';
 189                 } else {
 190                         char *op;
 191
 192                         op = strdup(odir + 1);
 193                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 194
 195                         free(op);
 196                 }
 197                 if (!ret)
 198                         ret = bssplit_ddir(&td->o, DDIR_WRITE, odir + 1);
 199                 if (!ret) {
 200                         *odir = '\0';
 201                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
 202                 }
 203         } else {
 204                 char *op;
 205
 206                 op = strdup(str);
 207                 ret = bssplit_ddir(&td->o, DDIR_WRITE, op);
 208                 free(op);
 209
 210                 if (!ret) {
 211                         op = strdup(str);
 212                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 213                         free(op);
 214                 }
 215                 ret = bssplit_ddir(&td->o, DDIR_READ, str);
 216         }
 217
 218         free(p);
 219         return ret;
 220 }
 221
 222 static int str2error(char *str)
 223 {
 224         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 225                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 226                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 227                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 228                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 229                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 230                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 231                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
 232         int i = 0, num = sizeof(err) / sizeof(void *);
 233
 234         while (i < num) {
 235                 if (!strcmp(err[i], str))
 236                         return i + 1;
 237                 i++;
 238         }
 239         return 0;
 240 }
 241
 242 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 243 {
 244         unsigned int i;
 245         int *error;
 246         char *fname;
 247
 248         if (etype >= ERROR_TYPE_CNT) {
 249                 log_err("Illegal error type\n");
 250                 return 1;
 251         }
 252
 253         td->o.ignore_error_nr[etype] = 4;
 254         error = malloc(4 * sizeof(struct bssplit));
 255
 256         i = 0;
 257         while ((fname = strsep(&str, ":")) != NULL) {
 258
 259                 if (!strlen(fname))
 260                         break;
 261
 262                 /*
 263                  * grow struct buffer, if needed
 264                  */
 265                 if (i == td->o.ignore_error_nr[etype]) {
 266                         td->o.ignore_error_nr[etype] <<= 1;
 267                         error = realloc(error, td->o.ignore_error_nr[etype]
 268                                                   * sizeof(int));
 269                 }
 270                 if (fname[0] == 'E') {
 271                         error[i] = str2error(fname);
 272                 } else {
 273                         error[i] = atoi(fname);
 274                         if (error[i] < 0)
 275                                 error[i] = -error[i];
 276                 }
 277                 if (!error[i]) {
 278                         log_err("Unknown error %s, please use number value \n",
 279                                   fname);
 280                         free(error);
 281                         return 1;
 282                 }
 283                 i++;
 284         }
 285         if (i) {
 286                 td->o.continue_on_error |= 1 << etype;
 287                 td->o.ignore_error_nr[etype] = i;
 288                 td->o.ignore_error[etype] = error;
 289         } else
 290                 free(error);
 291
 292         return 0;
 293
 294 }
 295
 296 static int str_ignore_error_cb(void *data, const char *input)
 297 {
 298         struct thread_data *td = data;
 299         char *str, *p, *n;
 300         int type = 0, ret = 1;
 301
 302         if (parse_dryrun())
 303                 return 0;
 304
 305         p = str = strdup(input);
 306
 307         strip_blank_front(&str);
 308         strip_blank_end(str);
 309
 310         while (p) {
 311                 n = strchr(p, ',');
 312                 if (n)
 313                         *n++ = '\0';
 314                 ret = ignore_error_type(td, type, p);
 315                 if (ret)
 316                         break;
 317                 p = n;
 318                 type++;
 319         }
 320         free(str);
 321         return ret;
 322 }
 323
 324 static int str_rw_cb(void *data, const char *str)
 325 {
 326         struct thread_data *td = data;
 327         struct thread_options *o = &td->o;
 328         char *nr;
 329
 330         if (parse_dryrun())
 331                 return 0;
 332
 333         o->ddir_seq_nr = 1;
 334         o->ddir_seq_add = 0;
 335
 336         nr = get_opt_postfix(str);
 337         if (!nr)
 338                 return 0;
 339
 340         if (td_random(td))
 341                 o->ddir_seq_nr = atoi(nr);
 342         else {
 343                 long long val;
 344
 345                 if (str_to_decimal(nr, &val, 1, o, 0, 0)) {
 346                         log_err("fio: rw postfix parsing failed\n");
 347                         free(nr);
 348                         return 1;
 349                 }
 350
 351                 o->ddir_seq_add = val;
 352         }
 353
 354         free(nr);
 355         return 0;
 356 }
 357
 358 static int str_mem_cb(void *data, const char *mem)
 359 {
 360         struct thread_data *td = data;
 361
 362         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP)
 363                 td->o.mmapfile = get_opt_postfix(mem);
 364
 365         return 0;
 366 }
 367
 368 static int fio_clock_source_cb(void *data, const char *str)
 369 {
 370         struct thread_data *td = data;
 371
 372         fio_clock_source = td->o.clocksource;
 373         fio_clock_source_set = 1;
 374         fio_clock_init();
 375         return 0;
 376 }
 377
 378 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 379 {
 380         struct thread_data *td = data;
 381
 382         td->o.rwmix[DDIR_READ] = *val;
 383         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 384         return 0;
 385 }
 386
 387 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 388 {
 389         struct thread_data *td = data;
 390
 391         td->o.rwmix[DDIR_WRITE] = *val;
 392         td->o.rwmix[DDIR_READ] = 100 - *val;
 393         return 0;
 394 }
 395
 396 static int str_exitall_cb(void)
 397 {
 398         exitall_on_terminate = 1;
 399         return 0;
 400 }
 401
 402 #ifdef FIO_HAVE_CPU_AFFINITY
 403 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
 404 {
 405         unsigned int i, index, cpus_in_mask;
 406         const long max_cpu = cpus_online();
 407
 408         cpus_in_mask = fio_cpu_count(mask);
 409         cpu_index = cpu_index % cpus_in_mask;
 410
 411         index = 0;
 412         for (i = 0; i < max_cpu; i++) {
 413                 if (!fio_cpu_isset(mask, i))
 414                         continue;
 415
 416                 if (cpu_index != index)
 417                         fio_cpu_clear(mask, i);
 418
 419                 index++;
 420         }
 421
 422         return fio_cpu_count(mask);
 423 }
 424
 425 static int str_cpumask_cb(void *data, unsigned long long *val)
 426 {
 427         struct thread_data *td = data;
 428         unsigned int i;
 429         long max_cpu;
 430         int ret;
 431
 432         if (parse_dryrun())
 433                 return 0;
 434
 435         ret = fio_cpuset_init(&td->o.cpumask);
 436         if (ret < 0) {
 437                 log_err("fio: cpuset_init failed\n");
 438                 td_verror(td, ret, "fio_cpuset_init");
 439                 return 1;
 440         }
 441
 442         max_cpu = cpus_online();
 443
 444         for (i = 0; i < sizeof(int) * 8; i++) {
 445                 if ((1 << i) & *val) {
 446                         if (i > max_cpu) {
 447                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 448                                                                 max_cpu);
 449                                 return 1;
 450                         }
 451                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 452                         fio_cpu_set(&td->o.cpumask, i);
 453                 }
 454         }
 455
 456         return 0;
 457 }
 458
 459 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 460                             const char *input)
 461 {
 462         char *cpu, *str, *p;
 463         long max_cpu;
 464         int ret = 0;
 465
 466         ret = fio_cpuset_init(mask);
 467         if (ret < 0) {
 468                 log_err("fio: cpuset_init failed\n");
 469                 td_verror(td, ret, "fio_cpuset_init");
 470                 return 1;
 471         }
 472
 473         p = str = strdup(input);
 474
 475         strip_blank_front(&str);
 476         strip_blank_end(str);
 477
 478         max_cpu = cpus_online();
 479
 480         while ((cpu = strsep(&str, ",")) != NULL) {
 481                 char *str2, *cpu2;
 482                 int icpu, icpu2;
 483
 484                 if (!strlen(cpu))
 485                         break;
 486
 487                 str2 = cpu;
 488                 icpu2 = -1;
 489                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 490                         if (!strlen(cpu2))
 491                                 break;
 492
 493                         icpu2 = atoi(cpu2);
 494                 }
 495
 496                 icpu = atoi(cpu);
 497                 if (icpu2 == -1)
 498                         icpu2 = icpu;
 499                 while (icpu <= icpu2) {
 500                         if (icpu >= FIO_MAX_CPUS) {
 501                                 log_err("fio: your OS only supports up to"
 502                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 503                                 ret = 1;
 504                                 break;
 505                         }
 506                         if (icpu > max_cpu) {
 507                                 log_err("fio: CPU %d too large (max=%ld)\n",
 508                                                         icpu, max_cpu);
 509                                 ret = 1;
 510                                 break;
 511                         }
 512
 513                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 514                         fio_cpu_set(mask, icpu);
 515                         icpu++;
 516                 }
 517                 if (ret)
 518                         break;
 519         }
 520
 521         free(p);
 522         return ret;
 523 }
 524
 525 static int str_cpus_allowed_cb(void *data, const char *input)
 526 {
 527         struct thread_data *td = data;
 528
 529         if (parse_dryrun())
 530                 return 0;
 531
 532         return set_cpus_allowed(td, &td->o.cpumask, input);
 533 }
 534
 535 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 536 {
 537         struct thread_data *td = data;
 538
 539         return set_cpus_allowed(td, &td->o.verify_cpumask, input);
 540 }
 541 #endif
 542
 543 #ifdef CONFIG_LIBNUMA
 544 static int str_numa_cpunodes_cb(void *data, char *input)
 545 {
 546         struct thread_data *td = data;
 547         struct bitmask *verify_bitmask;
 548
 549         if (parse_dryrun())
 550                 return 0;
 551
 552         /* numa_parse_nodestring() parses a character string list
 553          * of nodes into a bit mask. The bit mask is allocated by
 554          * numa_allocate_nodemask(), so it should be freed by
 555          * numa_free_nodemask().
 556          */
 557         verify_bitmask = numa_parse_nodestring(input);
 558         if (verify_bitmask == NULL) {
 559                 log_err("fio: numa_parse_nodestring failed\n");
 560                 td_verror(td, 1, "str_numa_cpunodes_cb");
 561                 return 1;
 562         }
 563         numa_free_nodemask(verify_bitmask);
 564
 565         td->o.numa_cpunodes = strdup(input);
 566         return 0;
 567 }
 568
 569 static int str_numa_mpol_cb(void *data, char *input)
 570 {
 571         struct thread_data *td = data;
 572         const char * const policy_types[] =
 573                 { "default", "prefer", "bind", "interleave", "local", NULL };
 574         int i;
 575         char *nodelist;
 576         struct bitmask *verify_bitmask;
 577
 578         if (parse_dryrun())
 579                 return 0;
 580
 581         nodelist = strchr(input, ':');
 582         if (nodelist) {
 583                 /* NUL-terminate mode */
 584                 *nodelist++ = '\0';
 585         }
 586
 587         for (i = 0; i <= MPOL_LOCAL; i++) {
 588                 if (!strcmp(input, policy_types[i])) {
 589                         td->o.numa_mem_mode = i;
 590                         break;
 591                 }
 592         }
 593         if (i > MPOL_LOCAL) {
 594                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 595                 goto out;
 596         }
 597
 598         switch (td->o.numa_mem_mode) {
 599         case MPOL_PREFERRED:
 600                 /*
 601                  * Insist on a nodelist of one node only
 602                  */
 603                 if (nodelist) {
 604                         char *rest = nodelist;
 605                         while (isdigit(*rest))
 606                                 rest++;
 607                         if (*rest) {
 608                                 log_err("fio: one node only for \'prefer\'\n");
 609                                 goto out;
 610                         }
 611                 } else {
 612                         log_err("fio: one node is needed for \'prefer\'\n");
 613                         goto out;
 614                 }
 615                 break;
 616         case MPOL_INTERLEAVE:
 617                 /*
 618                  * Default to online nodes with memory if no nodelist
 619                  */
 620                 if (!nodelist)
 621                         nodelist = strdup("all");
 622                 break;
 623         case MPOL_LOCAL:
 624         case MPOL_DEFAULT:
 625                 /*
 626                  * Don't allow a nodelist
 627                  */
 628                 if (nodelist) {
 629                         log_err("fio: NO nodelist for \'local\'\n");
 630                         goto out;
 631                 }
 632                 break;
 633         case MPOL_BIND:
 634                 /*
 635                  * Insist on a nodelist
 636                  */
 637                 if (!nodelist) {
 638                         log_err("fio: a nodelist is needed for \'bind\'\n");
 639                         goto out;
 640                 }
 641                 break;
 642         }
 643
 644
 645         /* numa_parse_nodestring() parses a character string list
 646          * of nodes into a bit mask. The bit mask is allocated by
 647          * numa_allocate_nodemask(), so it should be freed by
 648          * numa_free_nodemask().
 649          */
 650         switch (td->o.numa_mem_mode) {
 651         case MPOL_PREFERRED:
 652                 td->o.numa_mem_prefer_node = atoi(nodelist);
 653                 break;
 654         case MPOL_INTERLEAVE:
 655         case MPOL_BIND:
 656                 verify_bitmask = numa_parse_nodestring(nodelist);
 657                 if (verify_bitmask == NULL) {
 658                         log_err("fio: numa_parse_nodestring failed\n");
 659                         td_verror(td, 1, "str_numa_memnodes_cb");
 660                         return 1;
 661                 }
 662                 td->o.numa_memnodes = strdup(nodelist);
 663                 numa_free_nodemask(verify_bitmask);
 664
 665                 break;
 666         case MPOL_LOCAL:
 667         case MPOL_DEFAULT:
 668         default:
 669                 break;
 670         }
 671
 672         return 0;
 673 out:
 674         return 1;
 675 }
 676 #endif
 677
 678 static int str_fst_cb(void *data, const char *str)
 679 {
 680         struct thread_data *td = data;
 681         char *nr = get_opt_postfix(str);
 682
 683         td->file_service_nr = 1;
 684         if (nr) {
 685                 td->file_service_nr = atoi(nr);
 686                 free(nr);
 687         }
 688
 689         return 0;
 690 }
 691
 692 #ifdef CONFIG_SYNC_FILE_RANGE
 693 static int str_sfr_cb(void *data, const char *str)
 694 {
 695         struct thread_data *td = data;
 696         char *nr = get_opt_postfix(str);
 697
 698         td->sync_file_range_nr = 1;
 699         if (nr) {
 700                 td->sync_file_range_nr = atoi(nr);
 701                 free(nr);
 702         }
 703
 704         return 0;
 705 }
 706 #endif
 707
 708 static int str_random_distribution_cb(void *data, const char *str)
 709 {
 710         struct thread_data *td = data;
 711         double val;
 712         char *nr;
 713
 714         if (parse_dryrun())
 715                 return 0;
 716
 717         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 718                 val = 1.1;
 719         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 720                 val = 0.2;
 721         else
 722                 return 0;
 723
 724         nr = get_opt_postfix(str);
 725         if (nr && !str_to_float(nr, &val, 0)) {
 726                 log_err("fio: random postfix parsing failed\n");
 727                 free(nr);
 728                 return 1;
 729         }
 730
 731         free(nr);
 732
 733         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 734                 if (val == 1.00) {
 735                         log_err("fio: zipf theta must different than 1.0\n");
 736                         return 1;
 737                 }
 738                 td->o.zipf_theta.u.f = val;
 739         } else {
 740                 if (val <= 0.00 || val >= 1.00) {
 741                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 742                         return 1;
 743                 }
 744                 td->o.pareto_h.u.f = val;
 745         }
 746
 747         return 0;
 748 }
 749
 750 /*
 751  * Return next name in the string. Files are separated with ':'. If the ':'
 752  * is escaped with a '\', then that ':' is part of the filename and does not
 753  * indicate a new file.
 754  */
 755 static char *get_next_name(char **ptr)
 756 {
 757         char *str = *ptr;
 758         char *p, *start;
 759
 760         if (!str || !strlen(str))
 761                 return NULL;
 762
 763         start = str;
 764         do {
 765                 /*
 766                  * No colon, we are done
 767                  */
 768                 p = strchr(str, ':');
 769                 if (!p) {
 770                         *ptr = NULL;
 771                         break;
 772                 }
 773
 774                 /*
 775                  * We got a colon, but it's the first character. Skip and
 776                  * continue
 777                  */
 778                 if (p == start) {
 779                         str = ++start;
 780                         continue;
 781                 }
 782
 783                 if (*(p - 1) != '\\') {
 784                         *p = '\0';
 785                         *ptr = p + 1;
 786                         break;
 787                 }
 788
 789                 memmove(p - 1, p, strlen(p) + 1);
 790                 str = p;
 791         } while (1);
 792
 793         return start;
 794 }
 795
 796
 797 static int get_max_name_idx(char *input)
 798 {
 799         unsigned int cur_idx;
 800         char *str, *p;
 801
 802         p = str = strdup(input);
 803         for (cur_idx = 0; ; cur_idx++)
 804                 if (get_next_name(&str) == NULL)
 805                         break;
 806
 807         free(p);
 808         return cur_idx;
 809 }
 810
 811 /*
 812  * Returns the directory at the index, indexes > entires will be
 813  * assigned via modulo division of the index
 814  */
 815 int set_name_idx(char *target, char *input, int index)
 816 {
 817         unsigned int cur_idx;
 818         int len;
 819         char *fname, *str, *p;
 820
 821         p = str = strdup(input);
 822
 823         index %= get_max_name_idx(input);
 824         for (cur_idx = 0; cur_idx <= index; cur_idx++)
 825                 fname = get_next_name(&str);
 826
 827         len = sprintf(target, "%s/", fname);
 828         free(p);
 829
 830         return len;
 831 }
 832
 833 static int str_filename_cb(void *data, const char *input)
 834 {
 835         struct thread_data *td = data;
 836         char *fname, *str, *p;
 837
 838         p = str = strdup(input);
 839
 840         strip_blank_front(&str);
 841         strip_blank_end(str);
 842
 843         if (!td->files_index)
 844                 td->o.nr_files = 0;
 845
 846         while ((fname = get_next_name(&str)) != NULL) {
 847                 if (!strlen(fname))
 848                         break;
 849                 add_file(td, fname, 0, 1);
 850         }
 851
 852         free(p);
 853         return 0;
 854 }
 855
 856 static int str_directory_cb(void *data, const char fio_unused *unused)
 857 {
 858         struct thread_data *td = data;
 859         struct stat sb;
 860         char *dirname, *str, *p;
 861         int ret = 0;
 862
 863         if (parse_dryrun())
 864                 return 0;
 865
 866         p = str = strdup(td->o.directory);
 867         while ((dirname = get_next_name(&str)) != NULL) {
 868                 if (lstat(dirname, &sb) < 0) {
 869                         ret = errno;
 870
 871                         log_err("fio: %s is not a directory\n", dirname);
 872                         td_verror(td, ret, "lstat");
 873                         goto out;
 874                 }
 875                 if (!S_ISDIR(sb.st_mode)) {
 876                         log_err("fio: %s is not a directory\n", dirname);
 877                         ret = 1;
 878                         goto out;
 879                 }
 880         }
 881
 882 out:
 883         free(p);
 884         return ret;
 885 }
 886
 887 static int str_lockfile_cb(void *data, const char fio_unused *str)
 888 {
 889         struct thread_data *td = data;
 890
 891         if (td->files_index) {
 892                 log_err("fio: lockfile= option must precede filename=\n");
 893                 return 1;
 894         }
 895
 896         return 0;
 897 }
 898
 899 static int str_opendir_cb(void *data, const char fio_unused *str)
 900 {
 901         struct thread_data *td = data;
 902
 903         if (parse_dryrun())
 904                 return 0;
 905
 906         if (!td->files_index)
 907                 td->o.nr_files = 0;
 908
 909         return add_dir_files(td, td->o.opendir);
 910 }
 911
 912 static int pattern_cb(char *pattern, unsigned int max_size,
 913                       const char *input, unsigned int *pattern_bytes)
 914 {
 915         long off;
 916         int i = 0, j = 0, len, k, base = 10;
 917         uint32_t pattern_length;
 918         char *loc1, *loc2;
 919
 920         /*
 921          * Check if it's a string input
 922          */
 923         loc1 = strchr(input, '\"');
 924         if (loc1) {
 925                 do {
 926                         loc1++;
 927                         if (*loc1 == '\0' || *loc1 == '\"')
 928                                 break;
 929
 930                         pattern[i] = *loc1;
 931                         i++;
 932                 } while (i < max_size);
 933
 934                 if (!i)
 935                         return 1;
 936
 937                 goto fill;
 938         }
 939
 940         /*
 941          * No string, find out if it's decimal or hexidecimal
 942          */
 943         loc1 = strstr(input, "0x");
 944         loc2 = strstr(input, "0X");
 945         if (loc1 || loc2)
 946                 base = 16;
 947         off = strtol(input, NULL, base);
 948         if (off != LONG_MAX || errno != ERANGE) {
 949                 while (off) {
 950                         pattern[i] = off & 0xff;
 951                         off >>= 8;
 952                         i++;
 953                 }
 954         } else {
 955                 len = strlen(input);
 956                 k = len - 1;
 957                 if (base == 16) {
 958                         if (loc1)
 959                                 j = loc1 - input + 2;
 960                         else
 961                                 j = loc2 - input + 2;
 962                 } else
 963                         return 1;
 964                 if (len - j < max_size * 2) {
 965                         while (k >= j) {
 966                                 off = converthexchartoint(input[k--]);
 967                                 if (k >= j)
 968                                         off += (converthexchartoint(input[k--])
 969                                                 * 16);
 970                                 pattern[i++] = (char) off;
 971                         }
 972                 }
 973         }
 974
 975         /*
 976          * Fill the pattern all the way to the end. This greatly reduces
 977          * the number of memcpy's we have to do when verifying the IO.
 978          */
 979 fill:
 980         pattern_length = i;
 981         while (i > 1 && i * 2 <= max_size) {
 982                 memcpy(&pattern[i], &pattern[0], i);
 983                 i *= 2;
 984         }
 985
 986         /*
 987          * Fill remainder, if the pattern multiple ends up not being
 988          * max_size.
 989          */
 990         while (i > 1 && i < max_size) {
 991                 unsigned int b = min(pattern_length, max_size - i);
 992
 993                 memcpy(&pattern[i], &pattern[0], b);
 994                 i += b;
 995         }
 996
 997         if (i == 1) {
 998                 /*
 999                  * The code in verify_io_u_pattern assumes a single byte
1000                  * pattern fills the whole verify pattern buffer.
1001                  */
1002                 memset(pattern, pattern[0], max_size);
1003         }
1004
1005         *pattern_bytes = i;
1006         return 0;
1007 }
1008
1009 static int str_buffer_pattern_cb(void *data, const char *input)
1010 {
1011         struct thread_data *td = data;
1012         int ret;
1013
1014         ret = pattern_cb(td->o.buffer_pattern, MAX_PATTERN_SIZE, input,
1015                                 &td->o.buffer_pattern_bytes);
1016
1017         if (!ret && td->o.buffer_pattern_bytes) {
1018                 if (!td->o.compress_percentage)
1019                         td->o.refill_buffers = 0;
1020                 td->o.scramble_buffers = 0;
1021                 td->o.zero_buffers = 0;
1022         } else {
1023                 log_err("fio: failed parsing pattern `%s`\n", input);
1024                 ret = 1;
1025         }
1026
1027         return ret;
1028 }
1029
1030 static int str_buffer_compress_cb(void *data, unsigned long long *il)
1031 {
1032         struct thread_data *td = data;
1033
1034         td->flags |= TD_F_COMPRESS;
1035         td->o.compress_percentage = *il;
1036         return 0;
1037 }
1038
1039 static int str_dedupe_cb(void *data, unsigned long long *il)
1040 {
1041         struct thread_data *td = data;
1042
1043         td->flags |= TD_F_COMPRESS;
1044         td->o.dedupe_percentage = *il;
1045         td->o.refill_buffers = 1;
1046         return 0;
1047 }
1048
1049 static int str_verify_pattern_cb(void *data, const char *input)
1050 {
1051         struct thread_data *td = data;
1052         int ret;
1053
1054         ret = pattern_cb(td->o.verify_pattern, MAX_PATTERN_SIZE, input,
1055                                 &td->o.verify_pattern_bytes);
1056
1057         /*
1058          * VERIFY_META could already be set
1059          */
1060         if (!ret && td->o.verify == VERIFY_NONE)
1061                 td->o.verify = VERIFY_PATTERN;
1062
1063         return ret;
1064 }
1065
1066 static int str_gtod_reduce_cb(void *data, int *il)
1067 {
1068         struct thread_data *td = data;
1069         int val = *il;
1070
1071         td->o.disable_lat = !!val;
1072         td->o.disable_clat = !!val;
1073         td->o.disable_slat = !!val;
1074         td->o.disable_bw = !!val;
1075         td->o.clat_percentiles = !val;
1076         if (val)
1077                 td->tv_cache_mask = 63;
1078
1079         return 0;
1080 }
1081
1082 static int str_gtod_cpu_cb(void *data, long long *il)
1083 {
1084         struct thread_data *td = data;
1085         int val = *il;
1086
1087         td->o.gtod_cpu = val;
1088         td->o.gtod_offload = 1;
1089         return 0;
1090 }
1091
1092 static int str_size_cb(void *data, unsigned long long *__val)
1093 {
1094         struct thread_data *td = data;
1095         unsigned long long v = *__val;
1096
1097         if (parse_is_percent(v)) {
1098                 td->o.size = 0;
1099                 td->o.size_percent = -1ULL - v;
1100         } else
1101                 td->o.size = v;
1102
1103         return 0;
1104 }
1105
1106 static int rw_verify(struct fio_option *o, void *data)
1107 {
1108         struct thread_data *td = data;
1109
1110         if (read_only && td_write(td)) {
1111                 log_err("fio: job <%s> has write bit set, but fio is in"
1112                         " read-only mode\n", td->o.name);
1113                 return 1;
1114         }
1115
1116         return 0;
1117 }
1118
1119 static int gtod_cpu_verify(struct fio_option *o, void *data)
1120 {
1121 #ifndef FIO_HAVE_CPU_AFFINITY
1122         struct thread_data *td = data;
1123
1124         if (td->o.gtod_cpu) {
1125                 log_err("fio: platform must support CPU affinity for"
1126                         "gettimeofday() offloading\n");
1127                 return 1;
1128         }
1129 #endif
1130
1131         return 0;
1132 }
1133
1134 /*
1135  * Option grouping
1136  */
1137 static struct opt_group fio_opt_groups[] = {
1138         {
1139                 .name   = "General",
1140                 .mask   = FIO_OPT_C_GENERAL,
1141         },
1142         {
1143                 .name   = "I/O",
1144                 .mask   = FIO_OPT_C_IO,
1145         },
1146         {
1147                 .name   = "File",
1148                 .mask   = FIO_OPT_C_FILE,
1149         },
1150         {
1151                 .name   = "Statistics",
1152                 .mask   = FIO_OPT_C_STAT,
1153         },
1154         {
1155                 .name   = "Logging",
1156                 .mask   = FIO_OPT_C_LOG,
1157         },
1158         {
1159                 .name   = "Profiles",
1160                 .mask   = FIO_OPT_C_PROFILE,
1161         },
1162         {
1163                 .name   = NULL,
1164         },
1165 };
1166
1167 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1168                                                unsigned int inv_mask)
1169 {
1170         struct opt_group *og;
1171         int i;
1172
1173         if (*mask == inv_mask || !*mask)
1174                 return NULL;
1175
1176         for (i = 0; ogs[i].name; i++) {
1177                 og = &ogs[i];
1178
1179                 if (*mask & og->mask) {
1180                         *mask &= ~(og->mask);
1181                         return og;
1182                 }
1183         }
1184
1185         return NULL;
1186 }
1187
1188 struct opt_group *opt_group_from_mask(unsigned int *mask)
1189 {
1190         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1191 }
1192
1193 static struct opt_group fio_opt_cat_groups[] = {
1194         {
1195                 .name   = "Latency profiling",
1196                 .mask   = FIO_OPT_G_LATPROF,
1197         },
1198         {
1199                 .name   = "Rate",
1200                 .mask   = FIO_OPT_G_RATE,
1201         },
1202         {
1203                 .name   = "Zone",
1204                 .mask   = FIO_OPT_G_ZONE,
1205         },
1206         {
1207                 .name   = "Read/write mix",
1208                 .mask   = FIO_OPT_G_RWMIX,
1209         },
1210         {
1211                 .name   = "Verify",
1212                 .mask   = FIO_OPT_G_VERIFY,
1213         },
1214         {
1215                 .name   = "Trim",
1216                 .mask   = FIO_OPT_G_TRIM,
1217         },
1218         {
1219                 .name   = "I/O Logging",
1220                 .mask   = FIO_OPT_G_IOLOG,
1221         },
1222         {
1223                 .name   = "I/O Depth",
1224                 .mask   = FIO_OPT_G_IO_DEPTH,
1225         },
1226         {
1227                 .name   = "I/O Flow",
1228                 .mask   = FIO_OPT_G_IO_FLOW,
1229         },
1230         {
1231                 .name   = "Description",
1232                 .mask   = FIO_OPT_G_DESC,
1233         },
1234         {
1235                 .name   = "Filename",
1236                 .mask   = FIO_OPT_G_FILENAME,
1237         },
1238         {
1239                 .name   = "General I/O",
1240                 .mask   = FIO_OPT_G_IO_BASIC,
1241         },
1242         {
1243                 .name   = "Cgroups",
1244                 .mask   = FIO_OPT_G_CGROUP,
1245         },
1246         {
1247                 .name   = "Runtime",
1248                 .mask   = FIO_OPT_G_RUNTIME,
1249         },
1250         {
1251                 .name   = "Process",
1252                 .mask   = FIO_OPT_G_PROCESS,
1253         },
1254         {
1255                 .name   = "Job credentials / priority",
1256                 .mask   = FIO_OPT_G_CRED,
1257         },
1258         {
1259                 .name   = "Clock settings",
1260                 .mask   = FIO_OPT_G_CLOCK,
1261         },
1262         {
1263                 .name   = "I/O Type",
1264                 .mask   = FIO_OPT_G_IO_TYPE,
1265         },
1266         {
1267                 .name   = "I/O Thinktime",
1268                 .mask   = FIO_OPT_G_THINKTIME,
1269         },
1270         {
1271                 .name   = "Randomizations",
1272                 .mask   = FIO_OPT_G_RANDOM,
1273         },
1274         {
1275                 .name   = "I/O buffers",
1276                 .mask   = FIO_OPT_G_IO_BUF,
1277         },
1278         {
1279                 .name   = "Tiobench profile",
1280                 .mask   = FIO_OPT_G_TIOBENCH,
1281         },
1282
1283         {
1284                 .name   = NULL,
1285         }
1286 };
1287
1288 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1289 {
1290         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1291 }
1292
1293 /*
1294  * Map of job/command line options
1295  */
1296 struct fio_option fio_options[FIO_MAX_OPTS] = {
1297         {
1298                 .name   = "description",
1299                 .lname  = "Description of job",
1300                 .type   = FIO_OPT_STR_STORE,
1301                 .off1   = td_var_offset(description),
1302                 .help   = "Text job description",
1303                 .category = FIO_OPT_C_GENERAL,
1304                 .group  = FIO_OPT_G_DESC,
1305         },
1306         {
1307                 .name   = "name",
1308                 .lname  = "Job name",
1309                 .type   = FIO_OPT_STR_STORE,
1310                 .off1   = td_var_offset(name),
1311                 .help   = "Name of this job",
1312                 .category = FIO_OPT_C_GENERAL,
1313                 .group  = FIO_OPT_G_DESC,
1314         },
1315         {
1316                 .name   = "filename",
1317                 .lname  = "Filename(s)",
1318                 .type   = FIO_OPT_STR_STORE,
1319                 .off1   = td_var_offset(filename),
1320                 .cb     = str_filename_cb,
1321                 .prio   = -1, /* must come after "directory" */
1322                 .help   = "File(s) to use for the workload",
1323                 .category = FIO_OPT_C_FILE,
1324                 .group  = FIO_OPT_G_FILENAME,
1325         },
1326         {
1327                 .name   = "directory",
1328                 .lname  = "Directory",
1329                 .type   = FIO_OPT_STR_STORE,
1330                 .off1   = td_var_offset(directory),
1331                 .cb     = str_directory_cb,
1332                 .help   = "Directory to store files in",
1333                 .category = FIO_OPT_C_FILE,
1334                 .group  = FIO_OPT_G_FILENAME,
1335         },
1336         {
1337                 .name   = "filename_format",
1338                 .type   = FIO_OPT_STR_STORE,
1339                 .off1   = td_var_offset(filename_format),
1340                 .prio   = -1, /* must come after "directory" */
1341                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1342                 .def    = "$jobname.$jobnum.$filenum",
1343                 .category = FIO_OPT_C_FILE,
1344                 .group  = FIO_OPT_G_FILENAME,
1345         },
1346         {
1347                 .name   = "lockfile",
1348                 .lname  = "Lockfile",
1349                 .type   = FIO_OPT_STR,
1350                 .off1   = td_var_offset(file_lock_mode),
1351                 .help   = "Lock file when doing IO to it",
1352                 .prio   = 1,
1353                 .parent = "filename",
1354                 .hide   = 0,
1355                 .def    = "none",
1356                 .cb     = str_lockfile_cb,
1357                 .category = FIO_OPT_C_FILE,
1358                 .group  = FIO_OPT_G_FILENAME,
1359                 .posval = {
1360                           { .ival = "none",
1361                             .oval = FILE_LOCK_NONE,
1362                             .help = "No file locking",
1363                           },
1364                           { .ival = "exclusive",
1365                             .oval = FILE_LOCK_EXCLUSIVE,
1366                             .help = "Exclusive file lock",
1367                           },
1368                           {
1369                             .ival = "readwrite",
1370                             .oval = FILE_LOCK_READWRITE,
1371                             .help = "Read vs write lock",
1372                           },
1373                 },
1374         },
1375         {
1376                 .name   = "opendir",
1377                 .lname  = "Open directory",
1378                 .type   = FIO_OPT_STR_STORE,
1379                 .off1   = td_var_offset(opendir),
1380                 .cb     = str_opendir_cb,
1381                 .help   = "Recursively add files from this directory and down",
1382                 .category = FIO_OPT_C_FILE,
1383                 .group  = FIO_OPT_G_FILENAME,
1384         },
1385         {
1386                 .name   = "rw",
1387                 .lname  = "Read/write",
1388                 .alias  = "readwrite",
1389                 .type   = FIO_OPT_STR,
1390                 .cb     = str_rw_cb,
1391                 .off1   = td_var_offset(td_ddir),
1392                 .help   = "IO direction",
1393                 .def    = "read",
1394                 .verify = rw_verify,
1395                 .category = FIO_OPT_C_IO,
1396                 .group  = FIO_OPT_G_IO_BASIC,
1397                 .posval = {
1398                           { .ival = "read",
1399                             .oval = TD_DDIR_READ,
1400                             .help = "Sequential read",
1401                           },
1402                           { .ival = "write",
1403                             .oval = TD_DDIR_WRITE,
1404                             .help = "Sequential write",
1405                           },
1406                           { .ival = "trim",
1407                             .oval = TD_DDIR_TRIM,
1408                             .help = "Sequential trim",
1409                           },
1410                           { .ival = "randread",
1411                             .oval = TD_DDIR_RANDREAD,
1412                             .help = "Random read",
1413                           },
1414                           { .ival = "randwrite",
1415                             .oval = TD_DDIR_RANDWRITE,
1416                             .help = "Random write",
1417                           },
1418                           { .ival = "randtrim",
1419                             .oval = TD_DDIR_RANDTRIM,
1420                             .help = "Random trim",
1421                           },
1422                           { .ival = "rw",
1423                             .oval = TD_DDIR_RW,
1424                             .help = "Sequential read and write mix",
1425                           },
1426                           { .ival = "readwrite",
1427                             .oval = TD_DDIR_RW,
1428                             .help = "Sequential read and write mix",
1429                           },
1430                           { .ival = "randrw",
1431                             .oval = TD_DDIR_RANDRW,
1432                             .help = "Random read and write mix"
1433                           },
1434                 },
1435         },
1436         {
1437                 .name   = "rw_sequencer",
1438                 .lname  = "RW Sequencer",
1439                 .type   = FIO_OPT_STR,
1440                 .off1   = td_var_offset(rw_seq),
1441                 .help   = "IO offset generator modifier",
1442                 .def    = "sequential",
1443                 .category = FIO_OPT_C_IO,
1444                 .group  = FIO_OPT_G_IO_BASIC,
1445                 .posval = {
1446                           { .ival = "sequential",
1447                             .oval = RW_SEQ_SEQ,
1448                             .help = "Generate sequential offsets",
1449                           },
1450                           { .ival = "identical",
1451                             .oval = RW_SEQ_IDENT,
1452                             .help = "Generate identical offsets",
1453                           },
1454                 },
1455         },
1456
1457         {
1458                 .name   = "ioengine",
1459                 .lname  = "IO Engine",
1460                 .type   = FIO_OPT_STR_STORE,
1461                 .off1   = td_var_offset(ioengine),
1462                 .help   = "IO engine to use",
1463                 .def    = FIO_PREFERRED_ENGINE,
1464                 .category = FIO_OPT_C_IO,
1465                 .group  = FIO_OPT_G_IO_BASIC,
1466                 .posval = {
1467                           { .ival = "sync",
1468                             .help = "Use read/write",
1469                           },
1470                           { .ival = "psync",
1471                             .help = "Use pread/pwrite",
1472                           },
1473                           { .ival = "vsync",
1474                             .help = "Use readv/writev",
1475                           },
1476 #ifdef CONFIG_PWRITEV
1477                           { .ival = "pvsync",
1478                             .help = "Use preadv/pwritev",
1479                           },
1480 #endif
1481 #ifdef CONFIG_LIBAIO
1482                           { .ival = "libaio",
1483                             .help = "Linux native asynchronous IO",
1484                           },
1485 #endif
1486 #ifdef CONFIG_POSIXAIO
1487                           { .ival = "posixaio",
1488                             .help = "POSIX asynchronous IO",
1489                           },
1490 #endif
1491 #ifdef CONFIG_SOLARISAIO
1492                           { .ival = "solarisaio",
1493                             .help = "Solaris native asynchronous IO",
1494                           },
1495 #endif
1496 #ifdef CONFIG_WINDOWSAIO
1497                           { .ival = "windowsaio",
1498                             .help = "Windows native asynchronous IO"
1499                           },
1500 #endif
1501 #ifdef CONFIG_RBD
1502                           { .ival = "rbd",
1503                             .help = "Rados Block Device asynchronous IO"
1504                           },
1505 #endif
1506                           { .ival = "mmap",
1507                             .help = "Memory mapped IO"
1508                           },
1509 #ifdef CONFIG_LINUX_SPLICE
1510                           { .ival = "splice",
1511                             .help = "splice/vmsplice based IO",
1512                           },
1513                           { .ival = "netsplice",
1514                             .help = "splice/vmsplice to/from the network",
1515                           },
1516 #endif
1517 #ifdef FIO_HAVE_SGIO
1518                           { .ival = "sg",
1519                             .help = "SCSI generic v3 IO",
1520                           },
1521 #endif
1522                           { .ival = "null",
1523                             .help = "Testing engine (no data transfer)",
1524                           },
1525                           { .ival = "net",
1526                             .help = "Network IO",
1527                           },
1528                           { .ival = "cpuio",
1529                             .help = "CPU cycle burner engine",
1530                           },
1531 #ifdef CONFIG_GUASI
1532                           { .ival = "guasi",
1533                             .help = "GUASI IO engine",
1534                           },
1535 #endif
1536 #ifdef FIO_HAVE_BINJECT
1537                           { .ival = "binject",
1538                             .help = "binject direct inject block engine",
1539                           },
1540 #endif
1541 #ifdef CONFIG_RDMA
1542                           { .ival = "rdma",
1543                             .help = "RDMA IO engine",
1544                           },
1545 #endif
1546 #ifdef CONFIG_FUSION_AW
1547                           { .ival = "fusion-aw-sync",
1548                             .help = "Fusion-io atomic write engine",
1549                           },
1550 #endif
1551 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1552                           { .ival = "e4defrag",
1553                             .help = "ext4 defrag engine",
1554                           },
1555 #endif
1556 #ifdef CONFIG_LINUX_FALLOCATE
1557                           { .ival = "falloc",
1558                             .help = "fallocate() file based engine",
1559                           },
1560 #endif
1561 #ifdef CONFIG_GFAPI
1562                           { .ival = "gfapi",
1563                             .help = "Glusterfs libgfapi(sync) based engine"
1564                           },
1565                           { .ival = "gfapi_async",
1566                             .help = "Glusterfs libgfapi(async) based engine"
1567                           },
1568 #endif
1569 #ifdef CONFIG_LIBHDFS
1570                           { .ival = "libhdfs",
1571                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1572                           },
1573 #endif
1574                           { .ival = "external",
1575                             .help = "Load external engine (append name)",
1576                           },
1577                 },
1578         },
1579         {
1580                 .name   = "iodepth",
1581                 .lname  = "IO Depth",
1582                 .type   = FIO_OPT_INT,
1583                 .off1   = td_var_offset(iodepth),
1584                 .help   = "Number of IO buffers to keep in flight",
1585                 .minval = 1,
1586                 .interval = 1,
1587                 .def    = "1",
1588                 .category = FIO_OPT_C_IO,
1589                 .group  = FIO_OPT_G_IO_BASIC,
1590         },
1591         {
1592                 .name   = "iodepth_batch",
1593                 .lname  = "IO Depth batch",
1594                 .alias  = "iodepth_batch_submit",
1595                 .type   = FIO_OPT_INT,
1596                 .off1   = td_var_offset(iodepth_batch),
1597                 .help   = "Number of IO buffers to submit in one go",
1598                 .parent = "iodepth",
1599                 .hide   = 1,
1600                 .minval = 1,
1601                 .interval = 1,
1602                 .def    = "1",
1603                 .category = FIO_OPT_C_IO,
1604                 .group  = FIO_OPT_G_IO_BASIC,
1605         },
1606         {
1607                 .name   = "iodepth_batch_complete",
1608                 .lname  = "IO Depth batch complete",
1609                 .type   = FIO_OPT_INT,
1610                 .off1   = td_var_offset(iodepth_batch_complete),
1611                 .help   = "Number of IO buffers to retrieve in one go",
1612                 .parent = "iodepth",
1613                 .hide   = 1,
1614                 .minval = 0,
1615                 .interval = 1,
1616                 .def    = "1",
1617                 .category = FIO_OPT_C_IO,
1618                 .group  = FIO_OPT_G_IO_BASIC,
1619         },
1620         {
1621                 .name   = "iodepth_low",
1622                 .lname  = "IO Depth batch low",
1623                 .type   = FIO_OPT_INT,
1624                 .off1   = td_var_offset(iodepth_low),
1625                 .help   = "Low water mark for queuing depth",
1626                 .parent = "iodepth",
1627                 .hide   = 1,
1628                 .interval = 1,
1629                 .category = FIO_OPT_C_IO,
1630                 .group  = FIO_OPT_G_IO_BASIC,
1631         },
1632         {
1633                 .name   = "size",
1634                 .lname  = "Size",
1635                 .type   = FIO_OPT_STR_VAL,
1636                 .cb     = str_size_cb,
1637                 .off1   = td_var_offset(size),
1638                 .help   = "Total size of device or files",
1639                 .interval = 1024 * 1024,
1640                 .category = FIO_OPT_C_IO,
1641                 .group  = FIO_OPT_G_INVALID,
1642         },
1643         {
1644                 .name   = "io_limit",
1645                 .lname  = "IO Limit",
1646                 .type   = FIO_OPT_STR_VAL,
1647                 .off1   = td_var_offset(io_limit),
1648                 .interval = 1024 * 1024,
1649                 .category = FIO_OPT_C_IO,
1650                 .group  = FIO_OPT_G_INVALID,
1651         },
1652         {
1653                 .name   = "fill_device",
1654                 .lname  = "Fill device",
1655                 .alias  = "fill_fs",
1656                 .type   = FIO_OPT_BOOL,
1657                 .off1   = td_var_offset(fill_device),
1658                 .help   = "Write until an ENOSPC error occurs",
1659                 .def    = "0",
1660                 .category = FIO_OPT_C_FILE,
1661                 .group  = FIO_OPT_G_INVALID,
1662         },
1663         {
1664                 .name   = "filesize",
1665                 .lname  = "File size",
1666                 .type   = FIO_OPT_STR_VAL,
1667                 .off1   = td_var_offset(file_size_low),
1668                 .off2   = td_var_offset(file_size_high),
1669                 .minval = 1,
1670                 .help   = "Size of individual files",
1671                 .interval = 1024 * 1024,
1672                 .category = FIO_OPT_C_FILE,
1673                 .group  = FIO_OPT_G_INVALID,
1674         },
1675         {
1676                 .name   = "file_append",
1677                 .lname  = "File append",
1678                 .type   = FIO_OPT_BOOL,
1679                 .off1   = td_var_offset(file_append),
1680                 .help   = "IO will start at the end of the file(s)",
1681                 .def    = "0",
1682                 .category = FIO_OPT_C_FILE,
1683                 .group  = FIO_OPT_G_INVALID,
1684         },
1685         {
1686                 .name   = "offset",
1687                 .lname  = "IO offset",
1688                 .alias  = "fileoffset",
1689                 .type   = FIO_OPT_STR_VAL,
1690                 .off1   = td_var_offset(start_offset),
1691                 .help   = "Start IO from this offset",
1692                 .def    = "0",
1693                 .interval = 1024 * 1024,
1694                 .category = FIO_OPT_C_IO,
1695                 .group  = FIO_OPT_G_INVALID,
1696         },
1697         {
1698                 .name   = "offset_increment",
1699                 .lname  = "IO offset increment",
1700                 .type   = FIO_OPT_STR_VAL,
1701                 .off1   = td_var_offset(offset_increment),
1702                 .help   = "What is the increment from one offset to the next",
1703                 .parent = "offset",
1704                 .hide   = 1,
1705                 .def    = "0",
1706                 .interval = 1024 * 1024,
1707                 .category = FIO_OPT_C_IO,
1708                 .group  = FIO_OPT_G_INVALID,
1709         },
1710         {
1711                 .name   = "number_ios",
1712                 .lname  = "Number of IOs to perform",
1713                 .type   = FIO_OPT_STR_VAL,
1714                 .off1   = td_var_offset(number_ios),
1715                 .help   = "Force job completion after this number of IOs",
1716                 .def    = "0",
1717                 .category = FIO_OPT_C_IO,
1718                 .group  = FIO_OPT_G_INVALID,
1719         },
1720         {
1721                 .name   = "bs",
1722                 .lname  = "Block size",
1723                 .alias  = "blocksize",
1724                 .type   = FIO_OPT_INT,
1725                 .off1   = td_var_offset(bs[DDIR_READ]),
1726                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1727                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1728                 .minval = 1,
1729                 .help   = "Block size unit",
1730                 .def    = "4k",
1731                 .parent = "rw",
1732                 .hide   = 1,
1733                 .interval = 512,
1734                 .category = FIO_OPT_C_IO,
1735                 .group  = FIO_OPT_G_INVALID,
1736         },
1737         {
1738                 .name   = "ba",
1739                 .lname  = "Block size align",
1740                 .alias  = "blockalign",
1741                 .type   = FIO_OPT_INT,
1742                 .off1   = td_var_offset(ba[DDIR_READ]),
1743                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1744                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1745                 .minval = 1,
1746                 .help   = "IO block offset alignment",
1747                 .parent = "rw",
1748                 .hide   = 1,
1749                 .interval = 512,
1750                 .category = FIO_OPT_C_IO,
1751                 .group  = FIO_OPT_G_INVALID,
1752         },
1753         {
1754                 .name   = "bsrange",
1755                 .lname  = "Block size range",
1756                 .alias  = "blocksize_range",
1757                 .type   = FIO_OPT_RANGE,
1758                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1759                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1760                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1761                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1762                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1763                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1764                 .minval = 1,
1765                 .help   = "Set block size range (in more detail than bs)",
1766                 .parent = "rw",
1767                 .hide   = 1,
1768                 .interval = 4096,
1769                 .category = FIO_OPT_C_IO,
1770                 .group  = FIO_OPT_G_INVALID,
1771         },
1772         {
1773                 .name   = "bssplit",
1774                 .lname  = "Block size split",
1775                 .type   = FIO_OPT_STR,
1776                 .cb     = str_bssplit_cb,
1777                 .off1   = td_var_offset(bssplit),
1778                 .help   = "Set a specific mix of block sizes",
1779                 .parent = "rw",
1780                 .hide   = 1,
1781                 .category = FIO_OPT_C_IO,
1782                 .group  = FIO_OPT_G_INVALID,
1783         },
1784         {
1785                 .name   = "bs_unaligned",
1786                 .lname  = "Block size unaligned",
1787                 .alias  = "blocksize_unaligned",
1788                 .type   = FIO_OPT_STR_SET,
1789                 .off1   = td_var_offset(bs_unaligned),
1790                 .help   = "Don't sector align IO buffer sizes",
1791                 .parent = "rw",
1792                 .hide   = 1,
1793                 .category = FIO_OPT_C_IO,
1794                 .group  = FIO_OPT_G_INVALID,
1795         },
1796         {
1797                 .name   = "bs_is_seq_rand",
1798                 .lname  = "Block size division is seq/random (not read/write)",
1799                 .type   = FIO_OPT_BOOL,
1800                 .off1   = td_var_offset(bs_is_seq_rand),
1801                 .help   = "Consider any blocksize setting to be sequential,random",
1802                 .def    = "0",
1803                 .parent = "blocksize",
1804                 .category = FIO_OPT_C_IO,
1805                 .group  = FIO_OPT_G_INVALID,
1806         },
1807         {
1808                 .name   = "randrepeat",
1809                 .lname  = "Random repeatable",
1810                 .type   = FIO_OPT_BOOL,
1811                 .off1   = td_var_offset(rand_repeatable),
1812                 .help   = "Use repeatable random IO pattern",
1813                 .def    = "1",
1814                 .parent = "rw",
1815                 .hide   = 1,
1816                 .category = FIO_OPT_C_IO,
1817                 .group  = FIO_OPT_G_RANDOM,
1818         },
1819         {
1820                 .name   = "randseed",
1821                 .lname  = "The random generator seed",
1822                 .type   = FIO_OPT_STR_VAL,
1823                 .off1   = td_var_offset(rand_seed),
1824                 .help   = "Set the random generator seed value",
1825                 .parent = "rw",
1826                 .category = FIO_OPT_C_IO,
1827                 .group  = FIO_OPT_G_RANDOM,
1828         },
1829         {
1830                 .name   = "use_os_rand",
1831                 .lname  = "Use OS random",
1832                 .type   = FIO_OPT_DEPRECATED,
1833                 .off1   = td_var_offset(dep_use_os_rand),
1834                 .category = FIO_OPT_C_IO,
1835                 .group  = FIO_OPT_G_RANDOM,
1836         },
1837         {
1838                 .name   = "norandommap",
1839                 .lname  = "No randommap",
1840                 .type   = FIO_OPT_STR_SET,
1841                 .off1   = td_var_offset(norandommap),
1842                 .help   = "Accept potential duplicate random blocks",
1843                 .parent = "rw",
1844                 .hide   = 1,
1845                 .hide_on_set = 1,
1846                 .category = FIO_OPT_C_IO,
1847                 .group  = FIO_OPT_G_RANDOM,
1848         },
1849         {
1850                 .name   = "softrandommap",
1851                 .lname  = "Soft randommap",
1852                 .type   = FIO_OPT_BOOL,
1853                 .off1   = td_var_offset(softrandommap),
1854                 .help   = "Set norandommap if randommap allocation fails",
1855                 .parent = "norandommap",
1856                 .hide   = 1,
1857                 .def    = "0",
1858                 .category = FIO_OPT_C_IO,
1859                 .group  = FIO_OPT_G_RANDOM,
1860         },
1861         {
1862                 .name   = "random_generator",
1863                 .type   = FIO_OPT_STR,
1864                 .off1   = td_var_offset(random_generator),
1865                 .help   = "Type of random number generator to use",
1866                 .def    = "tausworthe",
1867                 .posval = {
1868                           { .ival = "tausworthe",
1869                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1870                             .help = "Strong Tausworthe generator",
1871                           },
1872                           { .ival = "lfsr",
1873                             .oval = FIO_RAND_GEN_LFSR,
1874                             .help = "Variable length LFSR",
1875                           },
1876                 },
1877                 .category = FIO_OPT_C_IO,
1878                 .group  = FIO_OPT_G_RANDOM,
1879         },
1880         {
1881                 .name   = "random_distribution",
1882                 .type   = FIO_OPT_STR,
1883                 .off1   = td_var_offset(random_distribution),
1884                 .cb     = str_random_distribution_cb,
1885                 .help   = "Random offset distribution generator",
1886                 .def    = "random",
1887                 .posval = {
1888                           { .ival = "random",
1889                             .oval = FIO_RAND_DIST_RANDOM,
1890                             .help = "Completely random",
1891                           },
1892                           { .ival = "zipf",
1893                             .oval = FIO_RAND_DIST_ZIPF,
1894                             .help = "Zipf distribution",
1895                           },
1896                           { .ival = "pareto",
1897                             .oval = FIO_RAND_DIST_PARETO,
1898                             .help = "Pareto distribution",
1899                           },
1900                 },
1901                 .category = FIO_OPT_C_IO,
1902                 .group  = FIO_OPT_G_RANDOM,
1903         },
1904         {
1905                 .name   = "percentage_random",
1906                 .lname  = "Percentage Random",
1907                 .type   = FIO_OPT_INT,
1908                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1909                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1910                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1911                 .maxval = 100,
1912                 .help   = "Percentage of seq/random mix that should be random",
1913                 .def    = "100,100,100",
1914                 .interval = 5,
1915                 .inverse = "percentage_sequential",
1916                 .category = FIO_OPT_C_IO,
1917                 .group  = FIO_OPT_G_RANDOM,
1918         },
1919         {
1920                 .name   = "percentage_sequential",
1921                 .lname  = "Percentage Sequential",
1922                 .type   = FIO_OPT_DEPRECATED,
1923                 .category = FIO_OPT_C_IO,
1924                 .group  = FIO_OPT_G_RANDOM,
1925         },
1926         {
1927                 .name   = "allrandrepeat",
1928                 .type   = FIO_OPT_BOOL,
1929                 .off1   = td_var_offset(allrand_repeatable),
1930                 .help   = "Use repeatable random numbers for everything",
1931                 .def    = "0",
1932                 .category = FIO_OPT_C_IO,
1933                 .group  = FIO_OPT_G_RANDOM,
1934         },
1935         {
1936                 .name   = "nrfiles",
1937                 .lname  = "Number of files",
1938                 .alias  = "nr_files",
1939                 .type   = FIO_OPT_INT,
1940                 .off1   = td_var_offset(nr_files),
1941                 .help   = "Split job workload between this number of files",
1942                 .def    = "1",
1943                 .interval = 1,
1944                 .category = FIO_OPT_C_FILE,
1945                 .group  = FIO_OPT_G_INVALID,
1946         },
1947         {
1948                 .name   = "openfiles",
1949                 .lname  = "Number of open files",
1950                 .type   = FIO_OPT_INT,
1951                 .off1   = td_var_offset(open_files),
1952                 .help   = "Number of files to keep open at the same time",
1953                 .category = FIO_OPT_C_FILE,
1954                 .group  = FIO_OPT_G_INVALID,
1955         },
1956         {
1957                 .name   = "file_service_type",
1958                 .lname  = "File service type",
1959                 .type   = FIO_OPT_STR,
1960                 .cb     = str_fst_cb,
1961                 .off1   = td_var_offset(file_service_type),
1962                 .help   = "How to select which file to service next",
1963                 .def    = "roundrobin",
1964                 .category = FIO_OPT_C_FILE,
1965                 .group  = FIO_OPT_G_INVALID,
1966                 .posval = {
1967                           { .ival = "random",
1968                             .oval = FIO_FSERVICE_RANDOM,
1969                             .help = "Choose a file at random",
1970                           },
1971                           { .ival = "roundrobin",
1972                             .oval = FIO_FSERVICE_RR,
1973                             .help = "Round robin select files",
1974                           },
1975                           { .ival = "sequential",
1976                             .oval = FIO_FSERVICE_SEQ,
1977                             .help = "Finish one file before moving to the next",
1978                           },
1979                 },
1980                 .parent = "nrfiles",
1981                 .hide   = 1,
1982         },
1983 #ifdef CONFIG_POSIX_FALLOCATE
1984         {
1985                 .name   = "fallocate",
1986                 .lname  = "Fallocate",
1987                 .type   = FIO_OPT_STR,
1988                 .off1   = td_var_offset(fallocate_mode),
1989                 .help   = "Whether pre-allocation is performed when laying out files",
1990                 .def    = "posix",
1991                 .category = FIO_OPT_C_FILE,
1992                 .group  = FIO_OPT_G_INVALID,
1993                 .posval = {
1994                           { .ival = "none",
1995                             .oval = FIO_FALLOCATE_NONE,
1996                             .help = "Do not pre-allocate space",
1997                           },
1998                           { .ival = "posix",
1999                             .oval = FIO_FALLOCATE_POSIX,
2000                             .help = "Use posix_fallocate()",
2001                           },
2002 #ifdef CONFIG_LINUX_FALLOCATE
2003                           { .ival = "keep",
2004                             .oval = FIO_FALLOCATE_KEEP_SIZE,
2005                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
2006                           },
2007 #endif
2008                           /* Compatibility with former boolean values */
2009                           { .ival = "0",
2010                             .oval = FIO_FALLOCATE_NONE,
2011                             .help = "Alias for 'none'",
2012                           },
2013                           { .ival = "1",
2014                             .oval = FIO_FALLOCATE_POSIX,
2015                             .help = "Alias for 'posix'",
2016                           },
2017                 },
2018         },
2019 #endif  /* CONFIG_POSIX_FALLOCATE */
2020         {
2021                 .name   = "fadvise_hint",
2022                 .lname  = "Fadvise hint",
2023                 .type   = FIO_OPT_BOOL,
2024                 .off1   = td_var_offset(fadvise_hint),
2025                 .help   = "Use fadvise() to advise the kernel on IO pattern",
2026                 .def    = "1",
2027                 .category = FIO_OPT_C_FILE,
2028                 .group  = FIO_OPT_G_INVALID,
2029         },
2030         {
2031                 .name   = "fsync",
2032                 .lname  = "Fsync",
2033                 .type   = FIO_OPT_INT,
2034                 .off1   = td_var_offset(fsync_blocks),
2035                 .help   = "Issue fsync for writes every given number of blocks",
2036                 .def    = "0",
2037                 .interval = 1,
2038                 .category = FIO_OPT_C_FILE,
2039                 .group  = FIO_OPT_G_INVALID,
2040         },
2041         {
2042                 .name   = "fdatasync",
2043                 .lname  = "Fdatasync",
2044                 .type   = FIO_OPT_INT,
2045                 .off1   = td_var_offset(fdatasync_blocks),
2046                 .help   = "Issue fdatasync for writes every given number of blocks",
2047                 .def    = "0",
2048                 .interval = 1,
2049                 .category = FIO_OPT_C_FILE,
2050                 .group  = FIO_OPT_G_INVALID,
2051         },
2052         {
2053                 .name   = "write_barrier",
2054                 .lname  = "Write barrier",
2055                 .type   = FIO_OPT_INT,
2056                 .off1   = td_var_offset(barrier_blocks),
2057                 .help   = "Make every Nth write a barrier write",
2058                 .def    = "0",
2059                 .interval = 1,
2060                 .category = FIO_OPT_C_IO,
2061                 .group  = FIO_OPT_G_INVALID,
2062         },
2063 #ifdef CONFIG_SYNC_FILE_RANGE
2064         {
2065                 .name   = "sync_file_range",
2066                 .lname  = "Sync file range",
2067                 .posval = {
2068                           { .ival = "wait_before",
2069                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2070                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2071                             .orval  = 1,
2072                           },
2073                           { .ival = "write",
2074                             .oval = SYNC_FILE_RANGE_WRITE,
2075                             .help = "SYNC_FILE_RANGE_WRITE",
2076                             .orval  = 1,
2077                           },
2078                           {
2079                             .ival = "wait_after",
2080                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2081                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2082                             .orval  = 1,
2083                           },
2084                 },
2085                 .type   = FIO_OPT_STR_MULTI,
2086                 .cb     = str_sfr_cb,
2087                 .off1   = td_var_offset(sync_file_range),
2088                 .help   = "Use sync_file_range()",
2089                 .category = FIO_OPT_C_FILE,
2090                 .group  = FIO_OPT_G_INVALID,
2091         },
2092 #endif
2093         {
2094                 .name   = "direct",
2095                 .lname  = "Direct I/O",
2096                 .type   = FIO_OPT_BOOL,
2097                 .off1   = td_var_offset(odirect),
2098                 .help   = "Use O_DIRECT IO (negates buffered)",
2099                 .def    = "0",
2100                 .inverse = "buffered",
2101                 .category = FIO_OPT_C_IO,
2102                 .group  = FIO_OPT_G_IO_TYPE,
2103         },
2104         {
2105                 .name   = "atomic",
2106                 .lname  = "Atomic I/O",
2107                 .type   = FIO_OPT_BOOL,
2108                 .off1   = td_var_offset(oatomic),
2109                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2110                 .def    = "0",
2111                 .category = FIO_OPT_C_IO,
2112                 .group  = FIO_OPT_G_IO_TYPE,
2113         },
2114         {
2115                 .name   = "buffered",
2116                 .lname  = "Buffered I/O",
2117                 .type   = FIO_OPT_BOOL,
2118                 .off1   = td_var_offset(odirect),
2119                 .neg    = 1,
2120                 .help   = "Use buffered IO (negates direct)",
2121                 .def    = "1",
2122                 .inverse = "direct",
2123                 .category = FIO_OPT_C_IO,
2124                 .group  = FIO_OPT_G_IO_TYPE,
2125         },
2126         {
2127                 .name   = "overwrite",
2128                 .lname  = "Overwrite",
2129                 .type   = FIO_OPT_BOOL,
2130                 .off1   = td_var_offset(overwrite),
2131                 .help   = "When writing, set whether to overwrite current data",
2132                 .def    = "0",
2133                 .category = FIO_OPT_C_FILE,
2134                 .group  = FIO_OPT_G_INVALID,
2135         },
2136         {
2137                 .name   = "loops",
2138                 .lname  = "Loops",
2139                 .type   = FIO_OPT_INT,
2140                 .off1   = td_var_offset(loops),
2141                 .help   = "Number of times to run the job",
2142                 .def    = "1",
2143                 .interval = 1,
2144                 .category = FIO_OPT_C_GENERAL,
2145                 .group  = FIO_OPT_G_RUNTIME,
2146         },
2147         {
2148                 .name   = "numjobs",
2149                 .lname  = "Number of jobs",
2150                 .type   = FIO_OPT_INT,
2151                 .off1   = td_var_offset(numjobs),
2152                 .help   = "Duplicate this job this many times",
2153                 .def    = "1",
2154                 .interval = 1,
2155                 .category = FIO_OPT_C_GENERAL,
2156                 .group  = FIO_OPT_G_RUNTIME,
2157         },
2158         {
2159                 .name   = "startdelay",
2160                 .lname  = "Start delay",
2161                 .type   = FIO_OPT_STR_VAL_TIME,
2162                 .off1   = td_var_offset(start_delay),
2163                 .off2   = td_var_offset(start_delay_high),
2164                 .help   = "Only start job when this period has passed",
2165                 .def    = "0",
2166                 .is_seconds = 1,
2167                 .is_time = 1,
2168                 .category = FIO_OPT_C_GENERAL,
2169                 .group  = FIO_OPT_G_RUNTIME,
2170         },
2171         {
2172                 .name   = "runtime",
2173                 .lname  = "Runtime",
2174                 .alias  = "timeout",
2175                 .type   = FIO_OPT_STR_VAL_TIME,
2176                 .off1   = td_var_offset(timeout),
2177                 .help   = "Stop workload when this amount of time has passed",
2178                 .def    = "0",
2179                 .is_seconds = 1,
2180                 .is_time = 1,
2181                 .category = FIO_OPT_C_GENERAL,
2182                 .group  = FIO_OPT_G_RUNTIME,
2183         },
2184         {
2185                 .name   = "time_based",
2186                 .lname  = "Time based",
2187                 .type   = FIO_OPT_STR_SET,
2188                 .off1   = td_var_offset(time_based),
2189                 .help   = "Keep running until runtime/timeout is met",
2190                 .category = FIO_OPT_C_GENERAL,
2191                 .group  = FIO_OPT_G_RUNTIME,
2192         },
2193         {
2194                 .name   = "verify_only",
2195                 .lname  = "Verify only",
2196                 .type   = FIO_OPT_STR_SET,
2197                 .off1   = td_var_offset(verify_only),
2198                 .help   = "Verifies previously written data is still valid",
2199                 .category = FIO_OPT_C_GENERAL,
2200                 .group  = FIO_OPT_G_RUNTIME,
2201         },
2202         {
2203                 .name   = "ramp_time",
2204                 .lname  = "Ramp time",
2205                 .type   = FIO_OPT_STR_VAL_TIME,
2206                 .off1   = td_var_offset(ramp_time),
2207                 .help   = "Ramp up time before measuring performance",
2208                 .is_seconds = 1,
2209                 .is_time = 1,
2210                 .category = FIO_OPT_C_GENERAL,
2211                 .group  = FIO_OPT_G_RUNTIME,
2212         },
2213         {
2214                 .name   = "clocksource",
2215                 .lname  = "Clock source",
2216                 .type   = FIO_OPT_STR,
2217                 .cb     = fio_clock_source_cb,
2218                 .off1   = td_var_offset(clocksource),
2219                 .help   = "What type of timing source to use",
2220                 .category = FIO_OPT_C_GENERAL,
2221                 .group  = FIO_OPT_G_CLOCK,
2222                 .posval = {
2223 #ifdef CONFIG_GETTIMEOFDAY
2224                           { .ival = "gettimeofday",
2225                             .oval = CS_GTOD,
2226                             .help = "Use gettimeofday(2) for timing",
2227                           },
2228 #endif
2229 #ifdef CONFIG_CLOCK_GETTIME
2230                           { .ival = "clock_gettime",
2231                             .oval = CS_CGETTIME,
2232                             .help = "Use clock_gettime(2) for timing",
2233                           },
2234 #endif
2235 #ifdef ARCH_HAVE_CPU_CLOCK
2236                           { .ival = "cpu",
2237                             .oval = CS_CPUCLOCK,
2238                             .help = "Use CPU private clock",
2239                           },
2240 #endif
2241                 },
2242         },
2243         {
2244                 .name   = "mem",
2245                 .alias  = "iomem",
2246                 .lname  = "I/O Memory",
2247                 .type   = FIO_OPT_STR,
2248                 .cb     = str_mem_cb,
2249                 .off1   = td_var_offset(mem_type),
2250                 .help   = "Backing type for IO buffers",
2251                 .def    = "malloc",
2252                 .category = FIO_OPT_C_IO,
2253                 .group  = FIO_OPT_G_INVALID,
2254                 .posval = {
2255                           { .ival = "malloc",
2256                             .oval = MEM_MALLOC,
2257                             .help = "Use malloc(3) for IO buffers",
2258                           },
2259 #ifndef CONFIG_NO_SHM
2260                           { .ival = "shm",
2261                             .oval = MEM_SHM,
2262                             .help = "Use shared memory segments for IO buffers",
2263                           },
2264 #ifdef FIO_HAVE_HUGETLB
2265                           { .ival = "shmhuge",
2266                             .oval = MEM_SHMHUGE,
2267                             .help = "Like shm, but use huge pages",
2268                           },
2269 #endif
2270 #endif
2271                           { .ival = "mmap",
2272                             .oval = MEM_MMAP,
2273                             .help = "Use mmap(2) (file or anon) for IO buffers",
2274                           },
2275 #ifdef FIO_HAVE_HUGETLB
2276                           { .ival = "mmaphuge",
2277                             .oval = MEM_MMAPHUGE,
2278                             .help = "Like mmap, but use huge pages",
2279                           },
2280 #endif
2281                   },
2282         },
2283         {
2284                 .name   = "iomem_align",
2285                 .alias  = "mem_align",
2286                 .lname  = "I/O memory alignment",
2287                 .type   = FIO_OPT_INT,
2288                 .off1   = td_var_offset(mem_align),
2289                 .minval = 0,
2290                 .help   = "IO memory buffer offset alignment",
2291                 .def    = "0",
2292                 .parent = "iomem",
2293                 .hide   = 1,
2294                 .category = FIO_OPT_C_IO,
2295                 .group  = FIO_OPT_G_INVALID,
2296         },
2297         {
2298                 .name   = "verify",
2299                 .lname  = "Verify",
2300                 .type   = FIO_OPT_STR,
2301                 .off1   = td_var_offset(verify),
2302                 .help   = "Verify data written",
2303                 .def    = "0",
2304                 .category = FIO_OPT_C_IO,
2305                 .group  = FIO_OPT_G_VERIFY,
2306                 .posval = {
2307                           { .ival = "0",
2308                             .oval = VERIFY_NONE,
2309                             .help = "Don't do IO verification",
2310                           },
2311                           { .ival = "md5",
2312                             .oval = VERIFY_MD5,
2313                             .help = "Use md5 checksums for verification",
2314                           },
2315                           { .ival = "crc64",
2316                             .oval = VERIFY_CRC64,
2317                             .help = "Use crc64 checksums for verification",
2318                           },
2319                           { .ival = "crc32",
2320                             .oval = VERIFY_CRC32,
2321                             .help = "Use crc32 checksums for verification",
2322                           },
2323                           { .ival = "crc32c-intel",
2324                             .oval = VERIFY_CRC32C,
2325                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2326                           },
2327                           { .ival = "crc32c",
2328                             .oval = VERIFY_CRC32C,
2329                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2330                           },
2331                           { .ival = "crc16",
2332                             .oval = VERIFY_CRC16,
2333                             .help = "Use crc16 checksums for verification",
2334                           },
2335                           { .ival = "crc7",
2336                             .oval = VERIFY_CRC7,
2337                             .help = "Use crc7 checksums for verification",
2338                           },
2339                           { .ival = "sha1",
2340                             .oval = VERIFY_SHA1,
2341                             .help = "Use sha1 checksums for verification",
2342                           },
2343                           { .ival = "sha256",
2344                             .oval = VERIFY_SHA256,
2345                             .help = "Use sha256 checksums for verification",
2346                           },
2347                           { .ival = "sha512",
2348                             .oval = VERIFY_SHA512,
2349                             .help = "Use sha512 checksums for verification",
2350                           },
2351                           { .ival = "xxhash",
2352                             .oval = VERIFY_XXHASH,
2353                             .help = "Use xxhash checksums for verification",
2354                           },
2355                           { .ival = "meta",
2356                             .oval = VERIFY_META,
2357                             .help = "Use io information",
2358                           },
2359                           {
2360                             .ival = "null",
2361                             .oval = VERIFY_NULL,
2362                             .help = "Pretend to verify",
2363                           },
2364                 },
2365         },
2366         {
2367                 .name   = "do_verify",
2368                 .lname  = "Perform verify step",
2369                 .type   = FIO_OPT_BOOL,
2370                 .off1   = td_var_offset(do_verify),
2371                 .help   = "Run verification stage after write",
2372                 .def    = "1",
2373                 .parent = "verify",
2374                 .hide   = 1,
2375                 .category = FIO_OPT_C_IO,
2376                 .group  = FIO_OPT_G_VERIFY,
2377         },
2378         {
2379                 .name   = "verifysort",
2380                 .lname  = "Verify sort",
2381                 .type   = FIO_OPT_BOOL,
2382                 .off1   = td_var_offset(verifysort),
2383                 .help   = "Sort written verify blocks for read back",
2384                 .def    = "1",
2385                 .parent = "verify",
2386                 .hide   = 1,
2387                 .category = FIO_OPT_C_IO,
2388                 .group  = FIO_OPT_G_VERIFY,
2389         },
2390         {
2391                 .name   = "verifysort_nr",
2392                 .type   = FIO_OPT_INT,
2393                 .off1   = td_var_offset(verifysort_nr),
2394                 .help   = "Pre-load and sort verify blocks for a read workload",
2395                 .minval = 0,
2396                 .maxval = 131072,
2397                 .def    = "1024",
2398                 .parent = "verify",
2399                 .category = FIO_OPT_C_IO,
2400                 .group  = FIO_OPT_G_VERIFY,
2401         },
2402         {
2403                 .name   = "verify_interval",
2404                 .lname  = "Verify interval",
2405                 .type   = FIO_OPT_INT,
2406                 .off1   = td_var_offset(verify_interval),
2407                 .minval = 2 * sizeof(struct verify_header),
2408                 .help   = "Store verify buffer header every N bytes",
2409                 .parent = "verify",
2410                 .hide   = 1,
2411                 .interval = 2 * sizeof(struct verify_header),
2412                 .category = FIO_OPT_C_IO,
2413                 .group  = FIO_OPT_G_VERIFY,
2414         },
2415         {
2416                 .name   = "verify_offset",
2417                 .lname  = "Verify offset",
2418                 .type   = FIO_OPT_INT,
2419                 .help   = "Offset verify header location by N bytes",
2420                 .off1   = td_var_offset(verify_offset),
2421                 .minval = sizeof(struct verify_header),
2422                 .parent = "verify",
2423                 .hide   = 1,
2424                 .category = FIO_OPT_C_IO,
2425                 .group  = FIO_OPT_G_VERIFY,
2426         },
2427         {
2428                 .name   = "verify_pattern",
2429                 .lname  = "Verify pattern",
2430                 .type   = FIO_OPT_STR,
2431                 .cb     = str_verify_pattern_cb,
2432                 .off1   = td_var_offset(verify_pattern),
2433                 .help   = "Fill pattern for IO buffers",
2434                 .parent = "verify",
2435                 .hide   = 1,
2436                 .category = FIO_OPT_C_IO,
2437                 .group  = FIO_OPT_G_VERIFY,
2438         },
2439         {
2440                 .name   = "verify_fatal",
2441                 .lname  = "Verify fatal",
2442                 .type   = FIO_OPT_BOOL,
2443                 .off1   = td_var_offset(verify_fatal),
2444                 .def    = "0",
2445                 .help   = "Exit on a single verify failure, don't continue",
2446                 .parent = "verify",
2447                 .hide   = 1,
2448                 .category = FIO_OPT_C_IO,
2449                 .group  = FIO_OPT_G_VERIFY,
2450         },
2451         {
2452                 .name   = "verify_dump",
2453                 .lname  = "Verify dump",
2454                 .type   = FIO_OPT_BOOL,
2455                 .off1   = td_var_offset(verify_dump),
2456                 .def    = "0",
2457                 .help   = "Dump contents of good and bad blocks on failure",
2458                 .parent = "verify",
2459                 .hide   = 1,
2460                 .category = FIO_OPT_C_IO,
2461                 .group  = FIO_OPT_G_VERIFY,
2462         },
2463         {
2464                 .name   = "verify_async",
2465                 .lname  = "Verify asynchronously",
2466                 .type   = FIO_OPT_INT,
2467                 .off1   = td_var_offset(verify_async),
2468                 .def    = "0",
2469                 .help   = "Number of async verifier threads to use",
2470                 .parent = "verify",
2471                 .hide   = 1,
2472                 .category = FIO_OPT_C_IO,
2473                 .group  = FIO_OPT_G_VERIFY,
2474         },
2475         {
2476                 .name   = "verify_backlog",
2477                 .lname  = "Verify backlog",
2478                 .type   = FIO_OPT_STR_VAL,
2479                 .off1   = td_var_offset(verify_backlog),
2480                 .help   = "Verify after this number of blocks are written",
2481                 .parent = "verify",
2482                 .hide   = 1,
2483                 .category = FIO_OPT_C_IO,
2484                 .group  = FIO_OPT_G_VERIFY,
2485         },
2486         {
2487                 .name   = "verify_backlog_batch",
2488                 .lname  = "Verify backlog batch",
2489                 .type   = FIO_OPT_INT,
2490                 .off1   = td_var_offset(verify_batch),
2491                 .help   = "Verify this number of IO blocks",
2492                 .parent = "verify",
2493                 .hide   = 1,
2494                 .category = FIO_OPT_C_IO,
2495                 .group  = FIO_OPT_G_VERIFY,
2496         },
2497 #ifdef FIO_HAVE_CPU_AFFINITY
2498         {
2499                 .name   = "verify_async_cpus",
2500                 .lname  = "Async verify CPUs",
2501                 .type   = FIO_OPT_STR,
2502                 .cb     = str_verify_cpus_allowed_cb,
2503                 .off1   = td_var_offset(verify_cpumask),
2504                 .help   = "Set CPUs allowed for async verify threads",
2505                 .parent = "verify_async",
2506                 .hide   = 1,
2507                 .category = FIO_OPT_C_IO,
2508                 .group  = FIO_OPT_G_VERIFY,
2509         },
2510 #endif
2511         {
2512                 .name   = "experimental_verify",
2513                 .off1   = td_var_offset(experimental_verify),
2514                 .type   = FIO_OPT_BOOL,
2515                 .help   = "Enable experimental verification",
2516                 .parent = "verify",
2517                 .category = FIO_OPT_C_IO,
2518                 .group  = FIO_OPT_G_VERIFY,
2519         },
2520         {
2521                 .name   = "verify_state_load",
2522                 .lname  = "Load verify state",
2523                 .off1   = td_var_offset(verify_state),
2524                 .type   = FIO_OPT_BOOL,
2525                 .help   = "Load verify termination state",
2526                 .parent = "verify",
2527                 .category = FIO_OPT_C_IO,
2528                 .group  = FIO_OPT_G_VERIFY,
2529         },
2530         {
2531                 .name   = "verify_state_save",
2532                 .lname  = "Save verify state",
2533                 .off1   = td_var_offset(verify_state_save),
2534                 .type   = FIO_OPT_BOOL,
2535                 .def    = "1",
2536                 .help   = "Save verify state on termination",
2537                 .parent = "verify",
2538                 .category = FIO_OPT_C_IO,
2539                 .group  = FIO_OPT_G_VERIFY,
2540         },
2541 #ifdef FIO_HAVE_TRIM
2542         {
2543                 .name   = "trim_percentage",
2544                 .lname  = "Trim percentage",
2545                 .type   = FIO_OPT_INT,
2546                 .off1   = td_var_offset(trim_percentage),
2547                 .minval = 0,
2548                 .maxval = 100,
2549                 .help   = "Number of verify blocks to discard/trim",
2550                 .parent = "verify",
2551                 .def    = "0",
2552                 .interval = 1,
2553                 .hide   = 1,
2554                 .category = FIO_OPT_C_IO,
2555                 .group  = FIO_OPT_G_TRIM,
2556         },
2557         {
2558                 .name   = "trim_verify_zero",
2559                 .lname  = "Verify trim zero",
2560                 .type   = FIO_OPT_BOOL,
2561                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2562                 .off1   = td_var_offset(trim_zero),
2563                 .parent = "trim_percentage",
2564                 .hide   = 1,
2565                 .def    = "1",
2566                 .category = FIO_OPT_C_IO,
2567                 .group  = FIO_OPT_G_TRIM,
2568         },
2569         {
2570                 .name   = "trim_backlog",
2571                 .lname  = "Trim backlog",
2572                 .type   = FIO_OPT_STR_VAL,
2573                 .off1   = td_var_offset(trim_backlog),
2574                 .help   = "Trim after this number of blocks are written",
2575                 .parent = "trim_percentage",
2576                 .hide   = 1,
2577                 .interval = 1,
2578                 .category = FIO_OPT_C_IO,
2579                 .group  = FIO_OPT_G_TRIM,
2580         },
2581         {
2582                 .name   = "trim_backlog_batch",
2583                 .lname  = "Trim backlog batch",
2584                 .type   = FIO_OPT_INT,
2585                 .off1   = td_var_offset(trim_batch),
2586                 .help   = "Trim this number of IO blocks",
2587                 .parent = "trim_percentage",
2588                 .hide   = 1,
2589                 .interval = 1,
2590                 .category = FIO_OPT_C_IO,
2591                 .group  = FIO_OPT_G_TRIM,
2592         },
2593 #endif
2594         {
2595                 .name   = "write_iolog",
2596                 .lname  = "Write I/O log",
2597                 .type   = FIO_OPT_STR_STORE,
2598                 .off1   = td_var_offset(write_iolog_file),
2599                 .help   = "Store IO pattern to file",
2600                 .category = FIO_OPT_C_IO,
2601                 .group  = FIO_OPT_G_IOLOG,
2602         },
2603         {
2604                 .name   = "read_iolog",
2605                 .lname  = "Read I/O log",
2606                 .type   = FIO_OPT_STR_STORE,
2607                 .off1   = td_var_offset(read_iolog_file),
2608                 .help   = "Playback IO pattern from file",
2609                 .category = FIO_OPT_C_IO,
2610                 .group  = FIO_OPT_G_IOLOG,
2611         },
2612         {
2613                 .name   = "replay_no_stall",
2614                 .lname  = "Don't stall on replay",
2615                 .type   = FIO_OPT_BOOL,
2616                 .off1   = td_var_offset(no_stall),
2617                 .def    = "0",
2618                 .parent = "read_iolog",
2619                 .hide   = 1,
2620                 .help   = "Playback IO pattern file as fast as possible without stalls",
2621                 .category = FIO_OPT_C_IO,
2622                 .group  = FIO_OPT_G_IOLOG,
2623         },
2624         {
2625                 .name   = "replay_redirect",
2626                 .lname  = "Redirect device for replay",
2627                 .type   = FIO_OPT_STR_STORE,
2628                 .off1   = td_var_offset(replay_redirect),
2629                 .parent = "read_iolog",
2630                 .hide   = 1,
2631                 .help   = "Replay all I/O onto this device, regardless of trace device",
2632                 .category = FIO_OPT_C_IO,
2633                 .group  = FIO_OPT_G_IOLOG,
2634         },
2635         {
2636                 .name   = "exec_prerun",
2637                 .lname  = "Pre-execute runnable",
2638                 .type   = FIO_OPT_STR_STORE,
2639                 .off1   = td_var_offset(exec_prerun),
2640                 .help   = "Execute this file prior to running job",
2641                 .category = FIO_OPT_C_GENERAL,
2642                 .group  = FIO_OPT_G_INVALID,
2643         },
2644         {
2645                 .name   = "exec_postrun",
2646                 .lname  = "Post-execute runnable",
2647                 .type   = FIO_OPT_STR_STORE,
2648                 .off1   = td_var_offset(exec_postrun),
2649                 .help   = "Execute this file after running job",
2650                 .category = FIO_OPT_C_GENERAL,
2651                 .group  = FIO_OPT_G_INVALID,
2652         },
2653 #ifdef FIO_HAVE_IOSCHED_SWITCH
2654         {
2655                 .name   = "ioscheduler",
2656                 .lname  = "I/O scheduler",
2657                 .type   = FIO_OPT_STR_STORE,
2658                 .off1   = td_var_offset(ioscheduler),
2659                 .help   = "Use this IO scheduler on the backing device",
2660                 .category = FIO_OPT_C_FILE,
2661                 .group  = FIO_OPT_G_INVALID,
2662         },
2663 #endif
2664         {
2665                 .name   = "zonesize",
2666                 .lname  = "Zone size",
2667                 .type   = FIO_OPT_STR_VAL,
2668                 .off1   = td_var_offset(zone_size),
2669                 .help   = "Amount of data to read per zone",
2670                 .def    = "0",
2671                 .interval = 1024 * 1024,
2672                 .category = FIO_OPT_C_IO,
2673                 .group  = FIO_OPT_G_ZONE,
2674         },
2675         {
2676                 .name   = "zonerange",
2677                 .lname  = "Zone range",
2678                 .type   = FIO_OPT_STR_VAL,
2679                 .off1   = td_var_offset(zone_range),
2680                 .help   = "Give size of an IO zone",
2681                 .def    = "0",
2682                 .interval = 1024 * 1024,
2683                 .category = FIO_OPT_C_IO,
2684                 .group  = FIO_OPT_G_ZONE,
2685         },
2686         {
2687                 .name   = "zoneskip",
2688                 .lname  = "Zone skip",
2689                 .type   = FIO_OPT_STR_VAL,
2690                 .off1   = td_var_offset(zone_skip),
2691                 .help   = "Space between IO zones",
2692                 .def    = "0",
2693                 .interval = 1024 * 1024,
2694                 .category = FIO_OPT_C_IO,
2695                 .group  = FIO_OPT_G_ZONE,
2696         },
2697         {
2698                 .name   = "lockmem",
2699                 .lname  = "Lock memory",
2700                 .type   = FIO_OPT_STR_VAL,
2701                 .off1   = td_var_offset(lockmem),
2702                 .help   = "Lock down this amount of memory (per worker)",
2703                 .def    = "0",
2704                 .interval = 1024 * 1024,
2705                 .category = FIO_OPT_C_GENERAL,
2706                 .group  = FIO_OPT_G_INVALID,
2707         },
2708         {
2709                 .name   = "rwmixread",
2710                 .lname  = "Read/write mix read",
2711                 .type   = FIO_OPT_INT,
2712                 .cb     = str_rwmix_read_cb,
2713                 .off1   = td_var_offset(rwmix[DDIR_READ]),
2714                 .maxval = 100,
2715                 .help   = "Percentage of mixed workload that is reads",
2716                 .def    = "50",
2717                 .interval = 5,
2718                 .inverse = "rwmixwrite",
2719                 .category = FIO_OPT_C_IO,
2720                 .group  = FIO_OPT_G_RWMIX,
2721         },
2722         {
2723                 .name   = "rwmixwrite",
2724                 .lname  = "Read/write mix write",
2725                 .type   = FIO_OPT_INT,
2726                 .cb     = str_rwmix_write_cb,
2727                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
2728                 .maxval = 100,
2729                 .help   = "Percentage of mixed workload that is writes",
2730                 .def    = "50",
2731                 .interval = 5,
2732                 .inverse = "rwmixread",
2733                 .category = FIO_OPT_C_IO,
2734                 .group  = FIO_OPT_G_RWMIX,
2735         },
2736         {
2737                 .name   = "rwmixcycle",
2738                 .lname  = "Read/write mix cycle",
2739                 .type   = FIO_OPT_DEPRECATED,
2740                 .category = FIO_OPT_C_IO,
2741                 .group  = FIO_OPT_G_RWMIX,
2742         },
2743         {
2744                 .name   = "nice",
2745                 .lname  = "Nice",
2746                 .type   = FIO_OPT_INT,
2747                 .off1   = td_var_offset(nice),
2748                 .help   = "Set job CPU nice value",
2749                 .minval = -19,
2750                 .maxval = 20,
2751                 .def    = "0",
2752                 .interval = 1,
2753                 .category = FIO_OPT_C_GENERAL,
2754                 .group  = FIO_OPT_G_CRED,
2755         },
2756 #ifdef FIO_HAVE_IOPRIO
2757         {
2758                 .name   = "prio",
2759                 .lname  = "I/O nice priority",
2760                 .type   = FIO_OPT_INT,
2761                 .off1   = td_var_offset(ioprio),
2762                 .help   = "Set job IO priority value",
2763                 .minval = 0,
2764                 .maxval = 7,
2765                 .interval = 1,
2766                 .category = FIO_OPT_C_GENERAL,
2767                 .group  = FIO_OPT_G_CRED,
2768         },
2769         {
2770                 .name   = "prioclass",
2771                 .lname  = "I/O nice priority class",
2772                 .type   = FIO_OPT_INT,
2773                 .off1   = td_var_offset(ioprio_class),
2774                 .help   = "Set job IO priority class",
2775                 .minval = 0,
2776                 .maxval = 3,
2777                 .interval = 1,
2778                 .category = FIO_OPT_C_GENERAL,
2779                 .group  = FIO_OPT_G_CRED,
2780         },
2781 #endif
2782         {
2783                 .name   = "thinktime",
2784                 .lname  = "Thinktime",
2785                 .type   = FIO_OPT_INT,
2786                 .off1   = td_var_offset(thinktime),
2787                 .help   = "Idle time between IO buffers (usec)",
2788                 .def    = "0",
2789                 .is_time = 1,
2790                 .category = FIO_OPT_C_IO,
2791                 .group  = FIO_OPT_G_THINKTIME,
2792         },
2793         {
2794                 .name   = "thinktime_spin",
2795                 .lname  = "Thinktime spin",
2796                 .type   = FIO_OPT_INT,
2797                 .off1   = td_var_offset(thinktime_spin),
2798                 .help   = "Start think time by spinning this amount (usec)",
2799                 .def    = "0",
2800                 .is_time = 1,
2801                 .parent = "thinktime",
2802                 .hide   = 1,
2803                 .category = FIO_OPT_C_IO,
2804                 .group  = FIO_OPT_G_THINKTIME,
2805         },
2806         {
2807                 .name   = "thinktime_blocks",
2808                 .lname  = "Thinktime blocks",
2809                 .type   = FIO_OPT_INT,
2810                 .off1   = td_var_offset(thinktime_blocks),
2811                 .help   = "IO buffer period between 'thinktime'",
2812                 .def    = "1",
2813                 .parent = "thinktime",
2814                 .hide   = 1,
2815                 .category = FIO_OPT_C_IO,
2816                 .group  = FIO_OPT_G_THINKTIME,
2817         },
2818         {
2819                 .name   = "rate",
2820                 .lname  = "I/O rate",
2821                 .type   = FIO_OPT_INT,
2822                 .off1   = td_var_offset(rate[DDIR_READ]),
2823                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2824                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2825                 .help   = "Set bandwidth rate",
2826                 .category = FIO_OPT_C_IO,
2827                 .group  = FIO_OPT_G_RATE,
2828         },
2829         {
2830                 .name   = "ratemin",
2831                 .lname  = "I/O min rate",
2832                 .type   = FIO_OPT_INT,
2833                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2834                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2835                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2836                 .help   = "Job must meet this rate or it will be shutdown",
2837                 .parent = "rate",
2838                 .hide   = 1,
2839                 .category = FIO_OPT_C_IO,
2840                 .group  = FIO_OPT_G_RATE,
2841         },
2842         {
2843                 .name   = "rate_iops",
2844                 .lname  = "I/O rate IOPS",
2845                 .type   = FIO_OPT_INT,
2846                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2847                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2848                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2849                 .help   = "Limit IO used to this number of IO operations/sec",
2850                 .hide   = 1,
2851                 .category = FIO_OPT_C_IO,
2852                 .group  = FIO_OPT_G_RATE,
2853         },
2854         {
2855                 .name   = "rate_iops_min",
2856                 .lname  = "I/O min rate IOPS",
2857                 .type   = FIO_OPT_INT,
2858                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2859                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2860                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2861                 .help   = "Job must meet this rate or it will be shut down",
2862                 .parent = "rate_iops",
2863                 .hide   = 1,
2864                 .category = FIO_OPT_C_IO,
2865                 .group  = FIO_OPT_G_RATE,
2866         },
2867         {
2868                 .name   = "ratecycle",
2869                 .lname  = "I/O rate cycle",
2870                 .type   = FIO_OPT_INT,
2871                 .off1   = td_var_offset(ratecycle),
2872                 .help   = "Window average for rate limits (msec)",
2873                 .def    = "1000",
2874                 .parent = "rate",
2875                 .hide   = 1,
2876                 .category = FIO_OPT_C_IO,
2877                 .group  = FIO_OPT_G_RATE,
2878         },
2879         {
2880                 .name   = "max_latency",
2881                 .type   = FIO_OPT_INT,
2882                 .off1   = td_var_offset(max_latency),
2883                 .help   = "Maximum tolerated IO latency (usec)",
2884                 .is_time = 1,
2885                 .category = FIO_OPT_C_IO,
2886                 .group = FIO_OPT_G_LATPROF,
2887         },
2888         {
2889                 .name   = "latency_target",
2890                 .lname  = "Latency Target (usec)",
2891                 .type   = FIO_OPT_STR_VAL_TIME,
2892                 .off1   = td_var_offset(latency_target),
2893                 .help   = "Ramp to max queue depth supporting this latency",
2894                 .is_time = 1,
2895                 .category = FIO_OPT_C_IO,
2896                 .group  = FIO_OPT_G_LATPROF,
2897         },
2898         {
2899                 .name   = "latency_window",
2900                 .lname  = "Latency Window (usec)",
2901                 .type   = FIO_OPT_STR_VAL_TIME,
2902                 .off1   = td_var_offset(latency_window),
2903                 .help   = "Time to sustain latency_target",
2904                 .is_time = 1,
2905                 .category = FIO_OPT_C_IO,
2906                 .group  = FIO_OPT_G_LATPROF,
2907         },
2908         {
2909                 .name   = "latency_percentile",
2910                 .lname  = "Latency Percentile",
2911                 .type   = FIO_OPT_FLOAT_LIST,
2912                 .off1   = td_var_offset(latency_percentile),
2913                 .help   = "Percentile of IOs must be below latency_target",
2914                 .def    = "100",
2915                 .maxlen = 1,
2916                 .minfp  = 0.0,
2917                 .maxfp  = 100.0,
2918                 .category = FIO_OPT_C_IO,
2919                 .group  = FIO_OPT_G_LATPROF,
2920         },
2921         {
2922                 .name   = "invalidate",
2923                 .lname  = "Cache invalidate",
2924                 .type   = FIO_OPT_BOOL,
2925                 .off1   = td_var_offset(invalidate_cache),
2926                 .help   = "Invalidate buffer/page cache prior to running job",
2927                 .def    = "1",
2928                 .category = FIO_OPT_C_IO,
2929                 .group  = FIO_OPT_G_IO_TYPE,
2930         },
2931         {
2932                 .name   = "sync",
2933                 .lname  = "Synchronous I/O",
2934                 .type   = FIO_OPT_BOOL,
2935                 .off1   = td_var_offset(sync_io),
2936                 .help   = "Use O_SYNC for buffered writes",
2937                 .def    = "0",
2938                 .parent = "buffered",
2939                 .hide   = 1,
2940                 .category = FIO_OPT_C_IO,
2941                 .group  = FIO_OPT_G_IO_TYPE,
2942         },
2943         {
2944                 .name   = "create_serialize",
2945                 .lname  = "Create serialize",
2946                 .type   = FIO_OPT_BOOL,
2947                 .off1   = td_var_offset(create_serialize),
2948                 .help   = "Serialize creating of job files",
2949                 .def    = "1",
2950                 .category = FIO_OPT_C_FILE,
2951                 .group  = FIO_OPT_G_INVALID,
2952         },
2953         {
2954                 .name   = "create_fsync",
2955                 .lname  = "Create fsync",
2956                 .type   = FIO_OPT_BOOL,
2957                 .off1   = td_var_offset(create_fsync),
2958                 .help   = "fsync file after creation",
2959                 .def    = "1",
2960                 .category = FIO_OPT_C_FILE,
2961                 .group  = FIO_OPT_G_INVALID,
2962         },
2963         {
2964                 .name   = "create_on_open",
2965                 .lname  = "Create on open",
2966                 .type   = FIO_OPT_BOOL,
2967                 .off1   = td_var_offset(create_on_open),
2968                 .help   = "Create files when they are opened for IO",
2969                 .def    = "0",
2970                 .category = FIO_OPT_C_FILE,
2971                 .group  = FIO_OPT_G_INVALID,
2972         },
2973         {
2974                 .name   = "create_only",
2975                 .type   = FIO_OPT_BOOL,
2976                 .off1   = td_var_offset(create_only),
2977                 .help   = "Only perform file creation phase",
2978                 .category = FIO_OPT_C_FILE,
2979                 .def    = "0",
2980         },
2981         {
2982                 .name   = "pre_read",
2983                 .lname  = "Pre-read files",
2984                 .type   = FIO_OPT_BOOL,
2985                 .off1   = td_var_offset(pre_read),
2986                 .help   = "Pre-read files before starting official testing",
2987                 .def    = "0",
2988                 .category = FIO_OPT_C_FILE,
2989                 .group  = FIO_OPT_G_INVALID,
2990         },
2991 #ifdef FIO_HAVE_CPU_AFFINITY
2992         {
2993                 .name   = "cpumask",
2994                 .lname  = "CPU mask",
2995                 .type   = FIO_OPT_INT,
2996                 .cb     = str_cpumask_cb,
2997                 .off1   = td_var_offset(cpumask),
2998                 .help   = "CPU affinity mask",
2999                 .category = FIO_OPT_C_GENERAL,
3000                 .group  = FIO_OPT_G_CRED,
3001         },
3002         {
3003                 .name   = "cpus_allowed",
3004                 .lname  = "CPUs allowed",
3005                 .type   = FIO_OPT_STR,
3006                 .cb     = str_cpus_allowed_cb,
3007                 .off1   = td_var_offset(cpumask),
3008                 .help   = "Set CPUs allowed",
3009                 .category = FIO_OPT_C_GENERAL,
3010                 .group  = FIO_OPT_G_CRED,
3011         },
3012         {
3013                 .name   = "cpus_allowed_policy",
3014                 .lname  = "CPUs allowed distribution policy",
3015                 .type   = FIO_OPT_STR,
3016                 .off1   = td_var_offset(cpus_allowed_policy),
3017                 .help   = "Distribution policy for cpus_allowed",
3018                 .parent = "cpus_allowed",
3019                 .prio   = 1,
3020                 .posval = {
3021                           { .ival = "shared",
3022                             .oval = FIO_CPUS_SHARED,
3023                             .help = "Mask shared between threads",
3024                           },
3025                           { .ival = "split",
3026                             .oval = FIO_CPUS_SPLIT,
3027                             .help = "Mask split between threads",
3028                           },
3029                 },
3030                 .category = FIO_OPT_C_GENERAL,
3031                 .group  = FIO_OPT_G_CRED,
3032         },
3033 #endif
3034 #ifdef CONFIG_LIBNUMA
3035         {
3036                 .name   = "numa_cpu_nodes",
3037                 .type   = FIO_OPT_STR,
3038                 .cb     = str_numa_cpunodes_cb,
3039                 .off1   = td_var_offset(numa_cpunodes),
3040                 .help   = "NUMA CPU nodes bind",
3041                 .category = FIO_OPT_C_GENERAL,
3042                 .group  = FIO_OPT_G_INVALID,
3043         },
3044         {
3045                 .name   = "numa_mem_policy",
3046                 .type   = FIO_OPT_STR,
3047                 .cb     = str_numa_mpol_cb,
3048                 .off1   = td_var_offset(numa_memnodes),
3049                 .help   = "NUMA memory policy setup",
3050                 .category = FIO_OPT_C_GENERAL,
3051                 .group  = FIO_OPT_G_INVALID,
3052         },
3053 #endif
3054         {
3055                 .name   = "end_fsync",
3056                 .lname  = "End fsync",
3057                 .type   = FIO_OPT_BOOL,
3058                 .off1   = td_var_offset(end_fsync),
3059                 .help   = "Include fsync at the end of job",
3060                 .def    = "0",
3061                 .category = FIO_OPT_C_FILE,
3062                 .group  = FIO_OPT_G_INVALID,
3063         },
3064         {
3065                 .name   = "fsync_on_close",
3066                 .lname  = "Fsync on close",
3067                 .type   = FIO_OPT_BOOL,
3068                 .off1   = td_var_offset(fsync_on_close),
3069                 .help   = "fsync files on close",
3070                 .def    = "0",
3071                 .category = FIO_OPT_C_FILE,
3072                 .group  = FIO_OPT_G_INVALID,
3073         },
3074         {
3075                 .name   = "unlink",
3076                 .lname  = "Unlink file",
3077                 .type   = FIO_OPT_BOOL,
3078                 .off1   = td_var_offset(unlink),
3079                 .help   = "Unlink created files after job has completed",
3080                 .def    = "0",
3081                 .category = FIO_OPT_C_FILE,
3082                 .group  = FIO_OPT_G_INVALID,
3083         },
3084         {
3085                 .name   = "exitall",
3086                 .lname  = "Exit-all on terminate",
3087                 .type   = FIO_OPT_STR_SET,
3088                 .cb     = str_exitall_cb,
3089                 .help   = "Terminate all jobs when one exits",
3090                 .category = FIO_OPT_C_GENERAL,
3091                 .group  = FIO_OPT_G_PROCESS,
3092         },
3093         {
3094                 .name   = "stonewall",
3095                 .lname  = "Wait for previous",
3096                 .alias  = "wait_for_previous",
3097                 .type   = FIO_OPT_STR_SET,
3098                 .off1   = td_var_offset(stonewall),
3099                 .help   = "Insert a hard barrier between this job and previous",
3100                 .category = FIO_OPT_C_GENERAL,
3101                 .group  = FIO_OPT_G_PROCESS,
3102         },
3103         {
3104                 .name   = "new_group",
3105                 .lname  = "New group",
3106                 .type   = FIO_OPT_STR_SET,
3107                 .off1   = td_var_offset(new_group),
3108                 .help   = "Mark the start of a new group (for reporting)",
3109                 .category = FIO_OPT_C_GENERAL,
3110                 .group  = FIO_OPT_G_PROCESS,
3111         },
3112         {
3113                 .name   = "thread",
3114                 .lname  = "Thread",
3115                 .type   = FIO_OPT_STR_SET,
3116                 .off1   = td_var_offset(use_thread),
3117                 .help   = "Use threads instead of processes",
3118 #ifdef CONFIG_NO_SHM
3119                 .def    = "1",
3120                 .no_warn_def = 1,
3121 #endif
3122                 .category = FIO_OPT_C_GENERAL,
3123                 .group  = FIO_OPT_G_PROCESS,
3124         },
3125         {
3126                 .name   = "write_bw_log",
3127                 .lname  = "Write bandwidth log",
3128                 .type   = FIO_OPT_STR_STORE,
3129                 .off1   = td_var_offset(bw_log_file),
3130                 .help   = "Write log of bandwidth during run",
3131                 .category = FIO_OPT_C_LOG,
3132                 .group  = FIO_OPT_G_INVALID,
3133         },
3134         {
3135                 .name   = "write_lat_log",
3136                 .lname  = "Write latency log",
3137                 .type   = FIO_OPT_STR_STORE,
3138                 .off1   = td_var_offset(lat_log_file),
3139                 .help   = "Write log of latency during run",
3140                 .category = FIO_OPT_C_LOG,
3141                 .group  = FIO_OPT_G_INVALID,
3142         },
3143         {
3144                 .name   = "write_iops_log",
3145                 .lname  = "Write IOPS log",
3146                 .type   = FIO_OPT_STR_STORE,
3147                 .off1   = td_var_offset(iops_log_file),
3148                 .help   = "Write log of IOPS during run",
3149                 .category = FIO_OPT_C_LOG,
3150                 .group  = FIO_OPT_G_INVALID,
3151         },
3152         {
3153                 .name   = "log_avg_msec",
3154                 .lname  = "Log averaging (msec)",
3155                 .type   = FIO_OPT_INT,
3156                 .off1   = td_var_offset(log_avg_msec),
3157                 .help   = "Average bw/iops/lat logs over this period of time",
3158                 .def    = "0",
3159                 .category = FIO_OPT_C_LOG,
3160                 .group  = FIO_OPT_G_INVALID,
3161         },
3162         {
3163                 .name   = "log_offset",
3164                 .lname  = "Log offset of IO",
3165                 .type   = FIO_OPT_BOOL,
3166                 .off1   = td_var_offset(log_offset),
3167                 .help   = "Include offset of IO for each log entry",
3168                 .def    = "0",
3169                 .category = FIO_OPT_C_LOG,
3170                 .group  = FIO_OPT_G_INVALID,
3171         },
3172 #ifdef CONFIG_ZLIB
3173         {
3174                 .name   = "log_compression",
3175                 .lname  = "Log compression",
3176                 .type   = FIO_OPT_INT,
3177                 .off1   = td_var_offset(log_gz),
3178                 .help   = "Log in compressed chunks of this size",
3179                 .minval = 32 * 1024 * 1024ULL,
3180                 .maxval = 512 * 1024 * 1024ULL,
3181                 .category = FIO_OPT_C_LOG,
3182                 .group  = FIO_OPT_G_INVALID,
3183         },
3184         {
3185                 .name   = "log_store_compressed",
3186                 .lname  = "Log store compressed",
3187                 .type   = FIO_OPT_BOOL,
3188                 .off1   = td_var_offset(log_gz_store),
3189                 .help   = "Store logs in a compressed format",
3190                 .category = FIO_OPT_C_LOG,
3191                 .group  = FIO_OPT_G_INVALID,
3192         },
3193 #endif
3194         {
3195                 .name   = "bwavgtime",
3196                 .lname  = "Bandwidth average time",
3197                 .type   = FIO_OPT_INT,
3198                 .off1   = td_var_offset(bw_avg_time),
3199                 .help   = "Time window over which to calculate bandwidth"
3200                           " (msec)",
3201                 .def    = "500",
3202                 .parent = "write_bw_log",
3203                 .hide   = 1,
3204                 .interval = 100,
3205                 .category = FIO_OPT_C_LOG,
3206                 .group  = FIO_OPT_G_INVALID,
3207         },
3208         {
3209                 .name   = "iopsavgtime",
3210                 .lname  = "IOPS average time",
3211                 .type   = FIO_OPT_INT,
3212                 .off1   = td_var_offset(iops_avg_time),
3213                 .help   = "Time window over which to calculate IOPS (msec)",
3214                 .def    = "500",
3215                 .parent = "write_iops_log",
3216                 .hide   = 1,
3217                 .interval = 100,
3218                 .category = FIO_OPT_C_LOG,
3219                 .group  = FIO_OPT_G_INVALID,
3220         },
3221         {
3222                 .name   = "group_reporting",
3223                 .lname  = "Group reporting",
3224                 .type   = FIO_OPT_STR_SET,
3225                 .off1   = td_var_offset(group_reporting),
3226                 .help   = "Do reporting on a per-group basis",
3227                 .category = FIO_OPT_C_STAT,
3228                 .group  = FIO_OPT_G_INVALID,
3229         },
3230         {
3231                 .name   = "zero_buffers",
3232                 .lname  = "Zero I/O buffers",
3233                 .type   = FIO_OPT_STR_SET,
3234                 .off1   = td_var_offset(zero_buffers),
3235                 .help   = "Init IO buffers to all zeroes",
3236                 .category = FIO_OPT_C_IO,
3237                 .group  = FIO_OPT_G_IO_BUF,
3238         },
3239         {
3240                 .name   = "refill_buffers",
3241                 .lname  = "Refill I/O buffers",
3242                 .type   = FIO_OPT_STR_SET,
3243                 .off1   = td_var_offset(refill_buffers),
3244                 .help   = "Refill IO buffers on every IO submit",
3245                 .category = FIO_OPT_C_IO,
3246                 .group  = FIO_OPT_G_IO_BUF,
3247         },
3248         {
3249                 .name   = "scramble_buffers",
3250                 .lname  = "Scramble I/O buffers",
3251                 .type   = FIO_OPT_BOOL,
3252                 .off1   = td_var_offset(scramble_buffers),
3253                 .help   = "Slightly scramble buffers on every IO submit",
3254                 .def    = "1",
3255                 .category = FIO_OPT_C_IO,
3256                 .group  = FIO_OPT_G_IO_BUF,
3257         },
3258         {
3259                 .name   = "buffer_pattern",
3260                 .lname  = "Buffer pattern",
3261                 .type   = FIO_OPT_STR,
3262                 .cb     = str_buffer_pattern_cb,
3263                 .off1   = td_var_offset(buffer_pattern),
3264                 .help   = "Fill pattern for IO buffers",
3265                 .category = FIO_OPT_C_IO,
3266                 .group  = FIO_OPT_G_IO_BUF,
3267         },
3268         {
3269                 .name   = "buffer_compress_percentage",
3270                 .lname  = "Buffer compression percentage",
3271                 .type   = FIO_OPT_INT,
3272                 .cb     = str_buffer_compress_cb,
3273                 .off1   = td_var_offset(compress_percentage),
3274                 .maxval = 100,
3275                 .minval = 0,
3276                 .help   = "How compressible the buffer is (approximately)",
3277                 .interval = 5,
3278                 .category = FIO_OPT_C_IO,
3279                 .group  = FIO_OPT_G_IO_BUF,
3280         },
3281         {
3282                 .name   = "buffer_compress_chunk",
3283                 .lname  = "Buffer compression chunk size",
3284                 .type   = FIO_OPT_INT,
3285                 .off1   = td_var_offset(compress_chunk),
3286                 .parent = "buffer_compress_percentage",
3287                 .hide   = 1,
3288                 .help   = "Size of compressible region in buffer",
3289                 .interval = 256,
3290                 .category = FIO_OPT_C_IO,
3291                 .group  = FIO_OPT_G_IO_BUF,
3292         },
3293         {
3294                 .name   = "dedupe_percentage",
3295                 .lname  = "Dedupe percentage",
3296                 .type   = FIO_OPT_INT,
3297                 .cb     = str_dedupe_cb,
3298                 .off1   = td_var_offset(dedupe_percentage),
3299                 .maxval = 100,
3300                 .minval = 0,
3301                 .help   = "Percentage of buffers that are dedupable",
3302                 .interval = 1,
3303                 .category = FIO_OPT_C_IO,
3304                 .group  = FIO_OPT_G_IO_BUF,
3305         },
3306         {
3307                 .name   = "clat_percentiles",
3308                 .lname  = "Completion latency percentiles",
3309                 .type   = FIO_OPT_BOOL,
3310                 .off1   = td_var_offset(clat_percentiles),
3311                 .help   = "Enable the reporting of completion latency percentiles",
3312                 .def    = "1",
3313                 .category = FIO_OPT_C_STAT,
3314                 .group  = FIO_OPT_G_INVALID,
3315         },
3316         {
3317                 .name   = "percentile_list",
3318                 .lname  = "Completion latency percentile list",
3319                 .type   = FIO_OPT_FLOAT_LIST,
3320                 .off1   = td_var_offset(percentile_list),
3321                 .off2   = td_var_offset(percentile_precision),
3322                 .help   = "Specify a custom list of percentiles to report",
3323                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3324                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3325                 .minfp  = 0.0,
3326                 .maxfp  = 100.0,
3327                 .category = FIO_OPT_C_STAT,
3328                 .group  = FIO_OPT_G_INVALID,
3329         },
3330
3331 #ifdef FIO_HAVE_DISK_UTIL
3332         {
3333                 .name   = "disk_util",
3334                 .lname  = "Disk utilization",
3335                 .type   = FIO_OPT_BOOL,
3336                 .off1   = td_var_offset(do_disk_util),
3337                 .help   = "Log disk utilization statistics",
3338                 .def    = "1",
3339                 .category = FIO_OPT_C_STAT,
3340                 .group  = FIO_OPT_G_INVALID,
3341         },
3342 #endif
3343         {
3344                 .name   = "gtod_reduce",
3345                 .lname  = "Reduce gettimeofday() calls",
3346                 .type   = FIO_OPT_BOOL,
3347                 .help   = "Greatly reduce number of gettimeofday() calls",
3348                 .cb     = str_gtod_reduce_cb,
3349                 .def    = "0",
3350                 .hide_on_set = 1,
3351                 .category = FIO_OPT_C_STAT,
3352                 .group  = FIO_OPT_G_INVALID,
3353         },
3354         {
3355                 .name   = "disable_lat",
3356                 .lname  = "Disable all latency stats",
3357                 .type   = FIO_OPT_BOOL,
3358                 .off1   = td_var_offset(disable_lat),
3359                 .help   = "Disable latency numbers",
3360                 .parent = "gtod_reduce",
3361                 .hide   = 1,
3362                 .def    = "0",
3363                 .category = FIO_OPT_C_STAT,
3364                 .group  = FIO_OPT_G_INVALID,
3365         },
3366         {
3367                 .name   = "disable_clat",
3368                 .lname  = "Disable completion latency stats",
3369                 .type   = FIO_OPT_BOOL,
3370                 .off1   = td_var_offset(disable_clat),
3371                 .help   = "Disable completion latency numbers",
3372                 .parent = "gtod_reduce",
3373                 .hide   = 1,
3374                 .def    = "0",
3375                 .category = FIO_OPT_C_STAT,
3376                 .group  = FIO_OPT_G_INVALID,
3377         },
3378         {
3379                 .name   = "disable_slat",
3380                 .lname  = "Disable submission latency stats",
3381                 .type   = FIO_OPT_BOOL,
3382                 .off1   = td_var_offset(disable_slat),
3383                 .help   = "Disable submission latency numbers",
3384                 .parent = "gtod_reduce",
3385                 .hide   = 1,
3386                 .def    = "0",
3387                 .category = FIO_OPT_C_STAT,
3388                 .group  = FIO_OPT_G_INVALID,
3389         },
3390         {
3391                 .name   = "disable_bw_measurement",
3392                 .lname  = "Disable bandwidth stats",
3393                 .type   = FIO_OPT_BOOL,
3394                 .off1   = td_var_offset(disable_bw),
3395                 .help   = "Disable bandwidth logging",
3396                 .parent = "gtod_reduce",
3397                 .hide   = 1,
3398                 .def    = "0",
3399                 .category = FIO_OPT_C_STAT,
3400                 .group  = FIO_OPT_G_INVALID,
3401         },
3402         {
3403                 .name   = "gtod_cpu",
3404                 .lname  = "Dedicated gettimeofday() CPU",
3405                 .type   = FIO_OPT_INT,
3406                 .cb     = str_gtod_cpu_cb,
3407                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3408                 .verify = gtod_cpu_verify,
3409                 .category = FIO_OPT_C_GENERAL,
3410                 .group  = FIO_OPT_G_CLOCK,
3411         },
3412         {
3413                 .name   = "unified_rw_reporting",
3414                 .type   = FIO_OPT_BOOL,
3415                 .off1   = td_var_offset(unified_rw_rep),
3416                 .help   = "Unify reporting across data direction",
3417                 .def    = "0",
3418                 .category = FIO_OPT_C_GENERAL,
3419                 .group  = FIO_OPT_G_INVALID,
3420         },
3421         {
3422                 .name   = "continue_on_error",
3423                 .lname  = "Continue on error",
3424                 .type   = FIO_OPT_STR,
3425                 .off1   = td_var_offset(continue_on_error),
3426                 .help   = "Continue on non-fatal errors during IO",
3427                 .def    = "none",
3428                 .category = FIO_OPT_C_GENERAL,
3429                 .group  = FIO_OPT_G_ERR,
3430                 .posval = {
3431                           { .ival = "none",
3432                             .oval = ERROR_TYPE_NONE,
3433                             .help = "Exit when an error is encountered",
3434                           },
3435                           { .ival = "read",
3436                             .oval = ERROR_TYPE_READ,
3437                             .help = "Continue on read errors only",
3438                           },
3439                           { .ival = "write",
3440                             .oval = ERROR_TYPE_WRITE,
3441                             .help = "Continue on write errors only",
3442                           },
3443                           { .ival = "io",
3444                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3445                             .help = "Continue on any IO errors",
3446                           },
3447                           { .ival = "verify",
3448                             .oval = ERROR_TYPE_VERIFY,
3449                             .help = "Continue on verify errors only",
3450                           },
3451                           { .ival = "all",
3452                             .oval = ERROR_TYPE_ANY,
3453                             .help = "Continue on all io and verify errors",
3454                           },
3455                           { .ival = "0",
3456                             .oval = ERROR_TYPE_NONE,
3457                             .help = "Alias for 'none'",
3458                           },
3459                           { .ival = "1",
3460                             .oval = ERROR_TYPE_ANY,
3461                             .help = "Alias for 'all'",
3462                           },
3463                 },
3464         },
3465         {
3466                 .name   = "ignore_error",
3467                 .type   = FIO_OPT_STR,
3468                 .cb     = str_ignore_error_cb,
3469                 .off1   = td_var_offset(ignore_error_nr),
3470                 .help   = "Set a specific list of errors to ignore",
3471                 .parent = "rw",
3472                 .category = FIO_OPT_C_GENERAL,
3473                 .group  = FIO_OPT_G_ERR,
3474         },
3475         {
3476                 .name   = "error_dump",
3477                 .type   = FIO_OPT_BOOL,
3478                 .off1   = td_var_offset(error_dump),
3479                 .def    = "0",
3480                 .help   = "Dump info on each error",
3481                 .category = FIO_OPT_C_GENERAL,
3482                 .group  = FIO_OPT_G_ERR,
3483         },
3484         {
3485                 .name   = "profile",
3486                 .lname  = "Profile",
3487                 .type   = FIO_OPT_STR_STORE,
3488                 .off1   = td_var_offset(profile),
3489                 .help   = "Select a specific builtin performance test",
3490                 .category = FIO_OPT_C_PROFILE,
3491                 .group  = FIO_OPT_G_INVALID,
3492         },
3493         {
3494                 .name   = "cgroup",
3495                 .lname  = "Cgroup",
3496                 .type   = FIO_OPT_STR_STORE,
3497                 .off1   = td_var_offset(cgroup),
3498                 .help   = "Add job to cgroup of this name",
3499                 .category = FIO_OPT_C_GENERAL,
3500                 .group  = FIO_OPT_G_CGROUP,
3501         },
3502         {
3503                 .name   = "cgroup_nodelete",
3504                 .lname  = "Cgroup no-delete",
3505                 .type   = FIO_OPT_BOOL,
3506                 .off1   = td_var_offset(cgroup_nodelete),
3507                 .help   = "Do not delete cgroups after job completion",
3508                 .def    = "0",
3509                 .parent = "cgroup",
3510                 .category = FIO_OPT_C_GENERAL,
3511                 .group  = FIO_OPT_G_CGROUP,
3512         },
3513         {
3514                 .name   = "cgroup_weight",
3515                 .lname  = "Cgroup weight",
3516                 .type   = FIO_OPT_INT,
3517                 .off1   = td_var_offset(cgroup_weight),
3518                 .help   = "Use given weight for cgroup",
3519                 .minval = 100,
3520                 .maxval = 1000,
3521                 .parent = "cgroup",
3522                 .category = FIO_OPT_C_GENERAL,
3523                 .group  = FIO_OPT_G_CGROUP,
3524         },
3525         {
3526                 .name   = "uid",
3527                 .lname  = "User ID",
3528                 .type   = FIO_OPT_INT,
3529                 .off1   = td_var_offset(uid),
3530                 .help   = "Run job with this user ID",
3531                 .category = FIO_OPT_C_GENERAL,
3532                 .group  = FIO_OPT_G_CRED,
3533         },
3534         {
3535                 .name   = "gid",
3536                 .lname  = "Group ID",
3537                 .type   = FIO_OPT_INT,
3538                 .off1   = td_var_offset(gid),
3539                 .help   = "Run job with this group ID",
3540                 .category = FIO_OPT_C_GENERAL,
3541                 .group  = FIO_OPT_G_CRED,
3542         },
3543         {
3544                 .name   = "kb_base",
3545                 .lname  = "KB Base",
3546                 .type   = FIO_OPT_INT,
3547                 .off1   = td_var_offset(kb_base),
3548                 .prio   = 1,
3549                 .def    = "1024",
3550                 .posval = {
3551                           { .ival = "1024",
3552                             .oval = 1024,
3553                             .help = "Use 1024 as the K base",
3554                           },
3555                           { .ival = "1000",
3556                             .oval = 1000,
3557                             .help = "Use 1000 as the K base",
3558                           },
3559                 },
3560                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3561                 .category = FIO_OPT_C_GENERAL,
3562                 .group  = FIO_OPT_G_INVALID,
3563         },
3564         {
3565                 .name   = "unit_base",
3566                 .lname  = "Base unit for reporting (Bits or Bytes)",
3567                 .type   = FIO_OPT_INT,
3568                 .off1   = td_var_offset(unit_base),
3569                 .prio   = 1,
3570                 .posval = {
3571                           { .ival = "0",
3572                             .oval = 0,
3573                             .help = "Auto-detect",
3574                           },
3575                           { .ival = "8",
3576                             .oval = 8,
3577                             .help = "Normal (byte based)",
3578                           },
3579                           { .ival = "1",
3580                             .oval = 1,
3581                             .help = "Bit based",
3582                           },
3583                 },
3584                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3585                 .category = FIO_OPT_C_GENERAL,
3586                 .group  = FIO_OPT_G_INVALID,
3587         },
3588         {
3589                 .name   = "hugepage-size",
3590                 .lname  = "Hugepage size",
3591                 .type   = FIO_OPT_INT,
3592                 .off1   = td_var_offset(hugepage_size),
3593                 .help   = "When using hugepages, specify size of each page",
3594                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3595                 .interval = 1024 * 1024,
3596                 .category = FIO_OPT_C_GENERAL,
3597                 .group  = FIO_OPT_G_INVALID,
3598         },
3599         {
3600                 .name   = "flow_id",
3601                 .lname  = "I/O flow ID",
3602                 .type   = FIO_OPT_INT,
3603                 .off1   = td_var_offset(flow_id),
3604                 .help   = "The flow index ID to use",
3605                 .def    = "0",
3606                 .category = FIO_OPT_C_IO,
3607                 .group  = FIO_OPT_G_IO_FLOW,
3608         },
3609         {
3610                 .name   = "flow",
3611                 .lname  = "I/O flow weight",
3612                 .type   = FIO_OPT_INT,
3613                 .off1   = td_var_offset(flow),
3614                 .help   = "Weight for flow control of this job",
3615                 .parent = "flow_id",
3616                 .hide   = 1,
3617                 .def    = "0",
3618                 .category = FIO_OPT_C_IO,
3619                 .group  = FIO_OPT_G_IO_FLOW,
3620         },
3621         {
3622                 .name   = "flow_watermark",
3623                 .lname  = "I/O flow watermark",
3624                 .type   = FIO_OPT_INT,
3625                 .off1   = td_var_offset(flow_watermark),
3626                 .help   = "High watermark for flow control. This option"
3627                         " should be set to the same value for all threads"
3628                         " with non-zero flow.",
3629                 .parent = "flow_id",
3630                 .hide   = 1,
3631                 .def    = "1024",
3632                 .category = FIO_OPT_C_IO,
3633                 .group  = FIO_OPT_G_IO_FLOW,
3634         },
3635         {
3636                 .name   = "flow_sleep",
3637                 .lname  = "I/O flow sleep",
3638                 .type   = FIO_OPT_INT,
3639                 .off1   = td_var_offset(flow_sleep),
3640                 .help   = "How many microseconds to sleep after being held"
3641                         " back by the flow control mechanism",
3642                 .parent = "flow_id",
3643                 .hide   = 1,
3644                 .def    = "0",
3645                 .category = FIO_OPT_C_IO,
3646                 .group  = FIO_OPT_G_IO_FLOW,
3647         },
3648         {
3649                 .name = NULL,
3650         },
3651 };
3652
3653 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3654                         const char *name, int val)
3655 {
3656         lopt->name = (char *) name;
3657         lopt->val = val;
3658         if (o->type == FIO_OPT_STR_SET)
3659                 lopt->has_arg = optional_argument;
3660         else
3661                 lopt->has_arg = required_argument;
3662 }
3663
3664 static void options_to_lopts(struct fio_option *opts,
3665                               struct option *long_options,
3666                               int i, int option_type)
3667 {
3668         struct fio_option *o = &opts[0];
3669         while (o->name) {
3670                 add_to_lopt(&long_options[i], o, o->name, option_type);
3671                 if (o->alias) {
3672                         i++;
3673                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3674                 }
3675
3676                 i++;
3677                 o++;
3678                 assert(i < FIO_NR_OPTIONS);
3679         }
3680 }
3681
3682 void fio_options_set_ioengine_opts(struct option *long_options,
3683                                    struct thread_data *td)
3684 {
3685         unsigned int i;
3686
3687         i = 0;
3688         while (long_options[i].name) {
3689                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3690                         memset(&long_options[i], 0, sizeof(*long_options));
3691                         break;
3692                 }
3693                 i++;
3694         }
3695
3696         /*
3697          * Just clear out the prior ioengine options.
3698          */
3699         if (!td || !td->eo)
3700                 return;
3701
3702         options_to_lopts(td->io_ops->options, long_options, i,
3703                          FIO_GETOPT_IOENGINE);
3704 }
3705
3706 void fio_options_dup_and_init(struct option *long_options)
3707 {
3708         unsigned int i;
3709
3710         options_init(fio_options);
3711
3712         i = 0;
3713         while (long_options[i].name)
3714                 i++;
3715
3716         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3717 }
3718
3719 struct fio_keyword {
3720         const char *word;
3721         const char *desc;
3722         char *replace;
3723 };
3724
3725 static struct fio_keyword fio_keywords[] = {
3726         {
3727                 .word   = "$pagesize",
3728                 .desc   = "Page size in the system",
3729         },
3730         {
3731                 .word   = "$mb_memory",
3732                 .desc   = "Megabytes of memory online",
3733         },
3734         {
3735                 .word   = "$ncpus",
3736                 .desc   = "Number of CPUs online in the system",
3737         },
3738         {
3739                 .word   = NULL,
3740         },
3741 };
3742
3743 void fio_keywords_init(void)
3744 {
3745         unsigned long long mb_memory;
3746         char buf[128];
3747         long l;
3748
3749         sprintf(buf, "%lu", (unsigned long) page_size);
3750         fio_keywords[0].replace = strdup(buf);
3751
3752         mb_memory = os_phys_mem() / (1024 * 1024);
3753         sprintf(buf, "%llu", mb_memory);
3754         fio_keywords[1].replace = strdup(buf);
3755
3756         l = cpus_online();
3757         sprintf(buf, "%lu", l);
3758         fio_keywords[2].replace = strdup(buf);
3759 }
3760
3761 #define BC_APP          "bc"
3762
3763 static char *bc_calc(char *str)
3764 {
3765         char buf[128], *tmp;
3766         FILE *f;
3767         int ret;
3768
3769         /*
3770          * No math, just return string
3771          */
3772         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3773              !strchr(str, '/')) || strchr(str, '\''))
3774                 return str;
3775
3776         /*
3777          * Split option from value, we only need to calculate the value
3778          */
3779         tmp = strchr(str, '=');
3780         if (!tmp)
3781                 return str;
3782
3783         tmp++;
3784
3785         /*
3786          * Prevent buffer overflows; such a case isn't reasonable anyway
3787          */
3788         if (strlen(str) >= 128 || strlen(tmp) > 100)
3789                 return str;
3790
3791         sprintf(buf, "which %s > /dev/null", BC_APP);
3792         if (system(buf)) {
3793                 log_err("fio: bc is needed for performing math\n");
3794                 return NULL;
3795         }
3796
3797         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
3798         f = popen(buf, "r");
3799         if (!f)
3800                 return NULL;
3801
3802         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
3803         if (ret <= 0) {
3804                 pclose(f);
3805                 return NULL;
3806         }
3807
3808         pclose(f);
3809         buf[(tmp - str) + ret - 1] = '\0';
3810         memcpy(buf, str, tmp - str);
3811         free(str);
3812         return strdup(buf);
3813 }
3814
3815 /*
3816  * Return a copy of the input string with substrings of the form ${VARNAME}
3817  * substituted with the value of the environment variable VARNAME.  The
3818  * substitution always occurs, even if VARNAME is empty or the corresponding
3819  * environment variable undefined.
3820  */
3821 static char *option_dup_subs(const char *opt)
3822 {
3823         char out[OPT_LEN_MAX+1];
3824         char in[OPT_LEN_MAX+1];
3825         char *outptr = out;
3826         char *inptr = in;
3827         char *ch1, *ch2, *env;
3828         ssize_t nchr = OPT_LEN_MAX;
3829         size_t envlen;
3830
3831         if (strlen(opt) + 1 > OPT_LEN_MAX) {
3832                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
3833                 return NULL;
3834         }
3835
3836         in[OPT_LEN_MAX] = '\0';
3837         strncpy(in, opt, OPT_LEN_MAX);
3838
3839         while (*inptr && nchr > 0) {
3840                 if (inptr[0] == '$' && inptr[1] == '{') {
3841                         ch2 = strchr(inptr, '}');
3842                         if (ch2 && inptr+1 < ch2) {
3843                                 ch1 = inptr+2;
3844                                 inptr = ch2+1;
3845                                 *ch2 = '\0';
3846
3847                                 env = getenv(ch1);
3848                                 if (env) {
3849                                         envlen = strlen(env);
3850                                         if (envlen <= nchr) {
3851                                                 memcpy(outptr, env, envlen);
3852                                                 outptr += envlen;
3853                                                 nchr -= envlen;
3854                                         }
3855                                 }
3856
3857                                 continue;
3858                         }
3859                 }
3860
3861                 *outptr++ = *inptr++;
3862                 --nchr;
3863         }
3864
3865         *outptr = '\0';
3866         return strdup(out);
3867 }
3868
3869 /*
3870  * Look for reserved variable names and replace them with real values
3871  */
3872 static char *fio_keyword_replace(char *opt)
3873 {
3874         char *s;
3875         int i;
3876         int docalc = 0;
3877
3878         for (i = 0; fio_keywords[i].word != NULL; i++) {
3879                 struct fio_keyword *kw = &fio_keywords[i];
3880
3881                 while ((s = strstr(opt, kw->word)) != NULL) {
3882                         char *new = malloc(strlen(opt) + 1);
3883                         char *o_org = opt;
3884                         int olen = s - opt;
3885                         int len;
3886
3887                         /*
3888                          * Copy part of the string before the keyword and
3889                          * sprintf() the replacement after it.
3890                          */
3891                         memcpy(new, opt, olen);
3892                         len = sprintf(new + olen, "%s", kw->replace);
3893
3894                         /*
3895                          * If there's more in the original string, copy that
3896                          * in too
3897                          */
3898                         opt += strlen(kw->word) + olen;
3899                         if (strlen(opt))
3900                                 memcpy(new + olen + len, opt, opt - o_org - 1);
3901
3902                         /*
3903                          * replace opt and free the old opt
3904                          */
3905                         opt = new;
3906                         free(o_org);
3907
3908                         docalc = 1;
3909                 }
3910         }
3911
3912         /*
3913          * Check for potential math and invoke bc, if possible
3914          */
3915         if (docalc)
3916                 opt = bc_calc(opt);
3917
3918         return opt;
3919 }
3920
3921 static char **dup_and_sub_options(char **opts, int num_opts)
3922 {
3923         int i;
3924         char **opts_copy = malloc(num_opts * sizeof(*opts));
3925         for (i = 0; i < num_opts; i++) {
3926                 opts_copy[i] = option_dup_subs(opts[i]);
3927                 if (!opts_copy[i])
3928                         continue;
3929                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
3930         }
3931         return opts_copy;
3932 }
3933