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 = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, o, 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 == (unsigned char) -1)
 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          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 if (perc_missing == 1)
 147                         perc = 100;
 148                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 149                         struct bssplit *bsp = &bssplit[i];
 150
 151                         if (bsp->perc == (unsigned char) -1)
 152                                 bsp->perc = (100 - perc) / perc_missing;
 153                 }
 154         }
 155
 156         o->min_bs[ddir] = min_bs;
 157         o->max_bs[ddir] = max_bs;
 158
 159         /*
 160          * now sort based on percentages, for ease of lookup
 161          */
 162         qsort(bssplit, o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 163         o->bssplit[ddir] = bssplit;
 164         return 0;
 165 }
 166
 167 static int str_bssplit_cb(void *data, const char *input)
 168 {
 169         struct thread_data *td = data;
 170         char *str, *p, *odir, *ddir;
 171         int ret = 0;
 172
 173         if (parse_dryrun())
 174                 return 0;
 175
 176         p = str = strdup(input);
 177
 178         strip_blank_front(&str);
 179         strip_blank_end(str);
 180
 181         odir = strchr(str, ',');
 182         if (odir) {
 183                 ddir = strchr(odir + 1, ',');
 184                 if (ddir) {
 185                         ret = bssplit_ddir(&td->o, DDIR_TRIM, ddir + 1);
 186                         if (!ret)
 187                                 *ddir = '\0';
 188                 } else {
 189                         char *op;
 190
 191                         op = strdup(odir + 1);
 192                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 193
 194                         free(op);
 195                 }
 196                 if (!ret)
 197                         ret = bssplit_ddir(&td->o, DDIR_WRITE, odir + 1);
 198                 if (!ret) {
 199                         *odir = '\0';
 200                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
 201                 }
 202         } else {
 203                 char *op;
 204
 205                 op = strdup(str);
 206                 ret = bssplit_ddir(&td->o, DDIR_WRITE, op);
 207                 free(op);
 208
 209                 if (!ret) {
 210                         op = strdup(str);
 211                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 212                         free(op);
 213                 }
 214                 ret = bssplit_ddir(&td->o, DDIR_READ, str);
 215         }
 216
 217         free(p);
 218         return ret;
 219 }
 220
 221 static int str2error(char *str)
 222 {
 223         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 224                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 225                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 226                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 227                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 228                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 229                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 230                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
 231         int i = 0, num = sizeof(err) / sizeof(void *);
 232
 233         while (i < num) {
 234                 if (!strcmp(err[i], str))
 235                         return i + 1;
 236                 i++;
 237         }
 238         return 0;
 239 }
 240
 241 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 242 {
 243         unsigned int i;
 244         int *error;
 245         char *fname;
 246
 247         if (etype >= ERROR_TYPE_CNT) {
 248                 log_err("Illegal error type\n");
 249                 return 1;
 250         }
 251
 252         td->o.ignore_error_nr[etype] = 4;
 253         error = malloc(4 * sizeof(struct bssplit));
 254
 255         i = 0;
 256         while ((fname = strsep(&str, ":")) != NULL) {
 257
 258                 if (!strlen(fname))
 259                         break;
 260
 261                 /*
 262                  * grow struct buffer, if needed
 263                  */
 264                 if (i == td->o.ignore_error_nr[etype]) {
 265                         td->o.ignore_error_nr[etype] <<= 1;
 266                         error = realloc(error, td->o.ignore_error_nr[etype]
 267                                                   * sizeof(int));
 268                 }
 269                 if (fname[0] == 'E') {
 270                         error[i] = str2error(fname);
 271                 } else {
 272                         error[i] = atoi(fname);
 273                         if (error[i] < 0)
 274                                 error[i] = -error[i];
 275                 }
 276                 if (!error[i]) {
 277                         log_err("Unknown error %s, please use number value \n",
 278                                   fname);
 279                         free(error);
 280                         return 1;
 281                 }
 282                 i++;
 283         }
 284         if (i) {
 285                 td->o.continue_on_error |= 1 << etype;
 286                 td->o.ignore_error_nr[etype] = i;
 287                 td->o.ignore_error[etype] = error;
 288         } else
 289                 free(error);
 290
 291         return 0;
 292
 293 }
 294
 295 static int str_ignore_error_cb(void *data, const char *input)
 296 {
 297         struct thread_data *td = data;
 298         char *str, *p, *n;
 299         int type = 0, ret = 1;
 300
 301         if (parse_dryrun())
 302                 return 0;
 303
 304         p = str = strdup(input);
 305
 306         strip_blank_front(&str);
 307         strip_blank_end(str);
 308
 309         while (p) {
 310                 n = strchr(p, ',');
 311                 if (n)
 312                         *n++ = '\0';
 313                 ret = ignore_error_type(td, type, p);
 314                 if (ret)
 315                         break;
 316                 p = n;
 317                 type++;
 318         }
 319         free(str);
 320         return ret;
 321 }
 322
 323 static int str_rw_cb(void *data, const char *str)
 324 {
 325         struct thread_data *td = data;
 326         struct thread_options *o = &td->o;
 327         char *nr;
 328
 329         if (parse_dryrun())
 330                 return 0;
 331
 332         o->ddir_seq_nr = 1;
 333         o->ddir_seq_add = 0;
 334
 335         nr = get_opt_postfix(str);
 336         if (!nr)
 337                 return 0;
 338
 339         if (td_random(td))
 340                 o->ddir_seq_nr = atoi(nr);
 341         else {
 342                 long long val;
 343
 344                 if (str_to_decimal(nr, &val, 1, o, 0)) {
 345                         log_err("fio: rw postfix parsing failed\n");
 346                         free(nr);
 347                         return 1;
 348                 }
 349
 350                 o->ddir_seq_add = val;
 351         }
 352
 353         free(nr);
 354         return 0;
 355 }
 356
 357 static int str_mem_cb(void *data, const char *mem)
 358 {
 359         struct thread_data *td = data;
 360
 361         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP)
 362                 td->o.mmapfile = get_opt_postfix(mem);
 363
 364         return 0;
 365 }
 366
 367 static int fio_clock_source_cb(void *data, const char *str)
 368 {
 369         struct thread_data *td = data;
 370
 371         fio_clock_source = td->o.clocksource;
 372         fio_clock_source_set = 1;
 373         fio_clock_init();
 374         return 0;
 375 }
 376
 377 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 378 {
 379         struct thread_data *td = data;
 380
 381         td->o.rwmix[DDIR_READ] = *val;
 382         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 383         return 0;
 384 }
 385
 386 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 387 {
 388         struct thread_data *td = data;
 389
 390         td->o.rwmix[DDIR_WRITE] = *val;
 391         td->o.rwmix[DDIR_READ] = 100 - *val;
 392         return 0;
 393 }
 394
 395 static int str_exitall_cb(void)
 396 {
 397         exitall_on_terminate = 1;
 398         return 0;
 399 }
 400
 401 #ifdef FIO_HAVE_CPU_AFFINITY
 402 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
 403 {
 404         unsigned int i, index, cpus_in_mask;
 405         const long max_cpu = cpus_online();
 406
 407         cpus_in_mask = fio_cpu_count(mask);
 408         cpu_index = cpu_index % cpus_in_mask;
 409
 410         index = 0;
 411         for (i = 0; i < max_cpu; i++) {
 412                 if (!fio_cpu_isset(mask, i))
 413                         continue;
 414
 415                 if (cpu_index != index)
 416                         fio_cpu_clear(mask, i);
 417
 418                 index++;
 419         }
 420
 421         return fio_cpu_count(mask);
 422 }
 423
 424 static int str_cpumask_cb(void *data, unsigned long long *val)
 425 {
 426         struct thread_data *td = data;
 427         unsigned int i;
 428         long max_cpu;
 429         int ret;
 430
 431         if (parse_dryrun())
 432                 return 0;
 433
 434         ret = fio_cpuset_init(&td->o.cpumask);
 435         if (ret < 0) {
 436                 log_err("fio: cpuset_init failed\n");
 437                 td_verror(td, ret, "fio_cpuset_init");
 438                 return 1;
 439         }
 440
 441         max_cpu = cpus_online();
 442
 443         for (i = 0; i < sizeof(int) * 8; i++) {
 444                 if ((1 << i) & *val) {
 445                         if (i > max_cpu) {
 446                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 447                                                                 max_cpu);
 448                                 return 1;
 449                         }
 450                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 451                         fio_cpu_set(&td->o.cpumask, i);
 452                 }
 453         }
 454
 455         td->o.cpumask_set = 1;
 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         if (!ret)
 523                 td->o.cpumask_set = 1;
 524         return ret;
 525 }
 526
 527 static int str_cpus_allowed_cb(void *data, const char *input)
 528 {
 529         struct thread_data *td = data;
 530         int ret;
 531
 532         if (parse_dryrun())
 533                 return 0;
 534
 535         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 536         if (!ret)
 537                 td->o.cpumask_set = 1;
 538
 539         return ret;
 540 }
 541
 542 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 543 {
 544         struct thread_data *td = data;
 545         int ret;
 546
 547         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 548         if (!ret)
 549                 td->o.verify_cpumask_set = 1;
 550
 551         return ret;
 552 }
 553 #endif
 554
 555 #ifdef CONFIG_LIBNUMA
 556 static int str_numa_cpunodes_cb(void *data, char *input)
 557 {
 558         struct thread_data *td = data;
 559         struct bitmask *verify_bitmask;
 560
 561         if (parse_dryrun())
 562                 return 0;
 563
 564         /* numa_parse_nodestring() parses a character string list
 565          * of nodes into a bit mask. The bit mask is allocated by
 566          * numa_allocate_nodemask(), so it should be freed by
 567          * numa_free_nodemask().
 568          */
 569         verify_bitmask = numa_parse_nodestring(input);
 570         if (verify_bitmask == NULL) {
 571                 log_err("fio: numa_parse_nodestring failed\n");
 572                 td_verror(td, 1, "str_numa_cpunodes_cb");
 573                 return 1;
 574         }
 575         numa_free_nodemask(verify_bitmask);
 576
 577         td->o.numa_cpunodes = strdup(input);
 578         td->o.numa_cpumask_set = 1;
 579         return 0;
 580 }
 581
 582 static int str_numa_mpol_cb(void *data, char *input)
 583 {
 584         struct thread_data *td = data;
 585         const char * const policy_types[] =
 586                 { "default", "prefer", "bind", "interleave", "local", NULL };
 587         int i;
 588         char *nodelist;
 589         struct bitmask *verify_bitmask;
 590
 591         if (parse_dryrun())
 592                 return 0;
 593
 594         nodelist = strchr(input, ':');
 595         if (nodelist) {
 596                 /* NUL-terminate mode */
 597                 *nodelist++ = '\0';
 598         }
 599
 600         for (i = 0; i <= MPOL_LOCAL; i++) {
 601                 if (!strcmp(input, policy_types[i])) {
 602                         td->o.numa_mem_mode = i;
 603                         break;
 604                 }
 605         }
 606         if (i > MPOL_LOCAL) {
 607                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 608                 goto out;
 609         }
 610
 611         switch (td->o.numa_mem_mode) {
 612         case MPOL_PREFERRED:
 613                 /*
 614                  * Insist on a nodelist of one node only
 615                  */
 616                 if (nodelist) {
 617                         char *rest = nodelist;
 618                         while (isdigit(*rest))
 619                                 rest++;
 620                         if (*rest) {
 621                                 log_err("fio: one node only for \'prefer\'\n");
 622                                 goto out;
 623                         }
 624                 } else {
 625                         log_err("fio: one node is needed for \'prefer\'\n");
 626                         goto out;
 627                 }
 628                 break;
 629         case MPOL_INTERLEAVE:
 630                 /*
 631                  * Default to online nodes with memory if no nodelist
 632                  */
 633                 if (!nodelist)
 634                         nodelist = strdup("all");
 635                 break;
 636         case MPOL_LOCAL:
 637         case MPOL_DEFAULT:
 638                 /*
 639                  * Don't allow a nodelist
 640                  */
 641                 if (nodelist) {
 642                         log_err("fio: NO nodelist for \'local\'\n");
 643                         goto out;
 644                 }
 645                 break;
 646         case MPOL_BIND:
 647                 /*
 648                  * Insist on a nodelist
 649                  */
 650                 if (!nodelist) {
 651                         log_err("fio: a nodelist is needed for \'bind\'\n");
 652                         goto out;
 653                 }
 654                 break;
 655         }
 656
 657
 658         /* numa_parse_nodestring() parses a character string list
 659          * of nodes into a bit mask. The bit mask is allocated by
 660          * numa_allocate_nodemask(), so it should be freed by
 661          * numa_free_nodemask().
 662          */
 663         switch (td->o.numa_mem_mode) {
 664         case MPOL_PREFERRED:
 665                 td->o.numa_mem_prefer_node = atoi(nodelist);
 666                 break;
 667         case MPOL_INTERLEAVE:
 668         case MPOL_BIND:
 669                 verify_bitmask = numa_parse_nodestring(nodelist);
 670                 if (verify_bitmask == NULL) {
 671                         log_err("fio: numa_parse_nodestring failed\n");
 672                         td_verror(td, 1, "str_numa_memnodes_cb");
 673                         return 1;
 674                 }
 675                 td->o.numa_memnodes = strdup(nodelist);
 676                 numa_free_nodemask(verify_bitmask);
 677
 678                 break;
 679         case MPOL_LOCAL:
 680         case MPOL_DEFAULT:
 681         default:
 682                 break;
 683         }
 684
 685         td->o.numa_memmask_set = 1;
 686         return 0;
 687
 688 out:
 689         return 1;
 690 }
 691 #endif
 692
 693 static int str_fst_cb(void *data, const char *str)
 694 {
 695         struct thread_data *td = data;
 696         char *nr = get_opt_postfix(str);
 697
 698         td->file_service_nr = 1;
 699         if (nr) {
 700                 td->file_service_nr = atoi(nr);
 701                 free(nr);
 702         }
 703
 704         return 0;
 705 }
 706
 707 #ifdef CONFIG_SYNC_FILE_RANGE
 708 static int str_sfr_cb(void *data, const char *str)
 709 {
 710         struct thread_data *td = data;
 711         char *nr = get_opt_postfix(str);
 712
 713         td->sync_file_range_nr = 1;
 714         if (nr) {
 715                 td->sync_file_range_nr = atoi(nr);
 716                 free(nr);
 717         }
 718
 719         return 0;
 720 }
 721 #endif
 722
 723 static int str_random_distribution_cb(void *data, const char *str)
 724 {
 725         struct thread_data *td = data;
 726         double val;
 727         char *nr;
 728
 729         if (parse_dryrun())
 730                 return 0;
 731
 732         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 733                 val = 1.1;
 734         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 735                 val = 0.2;
 736         else
 737                 return 0;
 738
 739         nr = get_opt_postfix(str);
 740         if (nr && !str_to_float(nr, &val)) {
 741                 log_err("fio: random postfix parsing failed\n");
 742                 free(nr);
 743                 return 1;
 744         }
 745
 746         free(nr);
 747
 748         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 749                 if (val == 1.00) {
 750                         log_err("fio: zipf theta must different than 1.0\n");
 751                         return 1;
 752                 }
 753                 td->o.zipf_theta.u.f = val;
 754         } else {
 755                 if (val <= 0.00 || val >= 1.00) {
 756                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 757                         return 1;
 758                 }
 759                 td->o.pareto_h.u.f = val;
 760         }
 761
 762         return 0;
 763 }
 764
 765 /*
 766  * Return next name in the string. Files are separated with ':'. If the ':'
 767  * is escaped with a '\', then that ':' is part of the filename and does not
 768  * indicate a new file.
 769  */
 770 static char *get_next_name(char **ptr)
 771 {
 772         char *str = *ptr;
 773         char *p, *start;
 774
 775         if (!str || !strlen(str))
 776                 return NULL;
 777
 778         start = str;
 779         do {
 780                 /*
 781                  * No colon, we are done
 782                  */
 783                 p = strchr(str, ':');
 784                 if (!p) {
 785                         *ptr = NULL;
 786                         break;
 787                 }
 788
 789                 /*
 790                  * We got a colon, but it's the first character. Skip and
 791                  * continue
 792                  */
 793                 if (p == start) {
 794                         str = ++start;
 795                         continue;
 796                 }
 797
 798                 if (*(p - 1) != '\\') {
 799                         *p = '\0';
 800                         *ptr = p + 1;
 801                         break;
 802                 }
 803
 804                 memmove(p - 1, p, strlen(p) + 1);
 805                 str = p;
 806         } while (1);
 807
 808         return start;
 809 }
 810
 811
 812 static int get_max_name_idx(char *input)
 813 {
 814         unsigned int cur_idx;
 815         char *str, *p;
 816
 817         p = str = strdup(input);
 818         for (cur_idx = 0; ; cur_idx++)
 819                 if (get_next_name(&str) == NULL)
 820                         break;
 821
 822         free(p);
 823         return cur_idx;
 824 }
 825
 826 /*
 827  * Returns the directory at the index, indexes > entires will be
 828  * assigned via modulo division of the index
 829  */
 830 int set_name_idx(char *target, char *input, int index)
 831 {
 832         unsigned int cur_idx;
 833         int len;
 834         char *fname, *str, *p;
 835
 836         p = str = strdup(input);
 837
 838         index %= get_max_name_idx(input);
 839         for (cur_idx = 0; cur_idx <= index; cur_idx++)
 840                 fname = get_next_name(&str);
 841
 842         len = sprintf(target, "%s/", fname);
 843         free(p);
 844
 845         return len;
 846 }
 847
 848 static int str_filename_cb(void *data, const char *input)
 849 {
 850         struct thread_data *td = data;
 851         char *fname, *str, *p;
 852
 853         p = str = strdup(input);
 854
 855         strip_blank_front(&str);
 856         strip_blank_end(str);
 857
 858         if (!td->files_index)
 859                 td->o.nr_files = 0;
 860
 861         while ((fname = get_next_name(&str)) != NULL) {
 862                 if (!strlen(fname))
 863                         break;
 864                 add_file(td, fname, 0, 1);
 865         }
 866
 867         free(p);
 868         return 0;
 869 }
 870
 871 static int str_directory_cb(void *data, const char fio_unused *unused)
 872 {
 873         struct thread_data *td = data;
 874         struct stat sb;
 875         char *dirname, *str, *p;
 876         int ret = 0;
 877
 878         if (parse_dryrun())
 879                 return 0;
 880
 881         p = str = strdup(td->o.directory);
 882         while ((dirname = get_next_name(&str)) != NULL) {
 883                 if (lstat(dirname, &sb) < 0) {
 884                         ret = errno;
 885
 886                         log_err("fio: %s is not a directory\n", dirname);
 887                         td_verror(td, ret, "lstat");
 888                         goto out;
 889                 }
 890                 if (!S_ISDIR(sb.st_mode)) {
 891                         log_err("fio: %s is not a directory\n", dirname);
 892                         ret = 1;
 893                         goto out;
 894                 }
 895         }
 896
 897 out:
 898         free(p);
 899         return ret;
 900 }
 901
 902 static int str_lockfile_cb(void *data, const char fio_unused *str)
 903 {
 904         struct thread_data *td = data;
 905
 906         if (td->files_index) {
 907                 log_err("fio: lockfile= option must precede filename=\n");
 908                 return 1;
 909         }
 910
 911         return 0;
 912 }
 913
 914 static int str_opendir_cb(void *data, const char fio_unused *str)
 915 {
 916         struct thread_data *td = data;
 917
 918         if (parse_dryrun())
 919                 return 0;
 920
 921         if (!td->files_index)
 922                 td->o.nr_files = 0;
 923
 924         return add_dir_files(td, td->o.opendir);
 925 }
 926
 927 static int pattern_cb(char *pattern, unsigned int max_size,
 928                       const char *input, unsigned int *pattern_bytes)
 929 {
 930         long off;
 931         int i = 0, j = 0, len, k, base = 10;
 932         uint32_t pattern_length;
 933         char *loc1, *loc2;
 934
 935         /*
 936          * Check if it's a string input
 937          */
 938         loc1 = strchr(input, '\"');
 939         if (loc1) {
 940                 do {
 941                         loc1++;
 942                         if (*loc1 == '\0' || *loc1 == '\"')
 943                                 break;
 944
 945                         pattern[i] = *loc1;
 946                         i++;
 947                 } while (i < max_size);
 948
 949                 if (!i)
 950                         return 1;
 951
 952                 goto fill;
 953         }
 954
 955         /*
 956          * No string, find out if it's decimal or hexidecimal
 957          */
 958         loc1 = strstr(input, "0x");
 959         loc2 = strstr(input, "0X");
 960         if (loc1 || loc2)
 961                 base = 16;
 962         off = strtol(input, NULL, base);
 963         if (off != LONG_MAX || errno != ERANGE) {
 964                 while (off) {
 965                         pattern[i] = off & 0xff;
 966                         off >>= 8;
 967                         i++;
 968                 }
 969         } else {
 970                 len = strlen(input);
 971                 k = len - 1;
 972                 if (base == 16) {
 973                         if (loc1)
 974                                 j = loc1 - input + 2;
 975                         else
 976                                 j = loc2 - input + 2;
 977                 } else
 978                         return 1;
 979                 if (len - j < max_size * 2) {
 980                         while (k >= j) {
 981                                 off = converthexchartoint(input[k--]);
 982                                 if (k >= j)
 983                                         off += (converthexchartoint(input[k--])
 984                                                 * 16);
 985                                 pattern[i++] = (char) off;
 986                         }
 987                 }
 988         }
 989
 990         /*
 991          * Fill the pattern all the way to the end. This greatly reduces
 992          * the number of memcpy's we have to do when verifying the IO.
 993          */
 994 fill:
 995         pattern_length = i;
 996         while (i > 1 && i * 2 <= max_size) {
 997                 memcpy(&pattern[i], &pattern[0], i);
 998                 i *= 2;
 999         }
1000
1001         /*
1002          * Fill remainder, if the pattern multiple ends up not being
1003          * max_size.
1004          */
1005         while (i > 1 && i < max_size) {
1006                 unsigned int b = min(pattern_length, max_size - i);
1007
1008                 memcpy(&pattern[i], &pattern[0], b);
1009                 i += b;
1010         }
1011
1012         if (i == 1) {
1013                 /*
1014                  * The code in verify_io_u_pattern assumes a single byte
1015                  * pattern fills the whole verify pattern buffer.
1016                  */
1017                 memset(pattern, pattern[0], max_size);
1018         }
1019
1020         *pattern_bytes = i;
1021         return 0;
1022 }
1023
1024 static int str_buffer_pattern_cb(void *data, const char *input)
1025 {
1026         struct thread_data *td = data;
1027         int ret;
1028
1029         ret = pattern_cb(td->o.buffer_pattern, MAX_PATTERN_SIZE, input,
1030                                 &td->o.buffer_pattern_bytes);
1031
1032         if (!ret && td->o.buffer_pattern_bytes) {
1033                 td->o.refill_buffers = 0;
1034                 td->o.scramble_buffers = 0;
1035                 td->o.zero_buffers = 0;
1036         } else {
1037                 log_err("fio: failed parsing pattern `%s`\n", input);
1038                 ret = 1;
1039         }
1040
1041         return ret;
1042 }
1043
1044 static int str_buffer_compress_cb(void *data, unsigned long long *il)
1045 {
1046         struct thread_data *td = data;
1047
1048         td->flags |= TD_F_COMPRESS;
1049         td->o.compress_percentage = *il;
1050         return 0;
1051 }
1052
1053 static int str_dedupe_cb(void *data, unsigned long long *il)
1054 {
1055         struct thread_data *td = data;
1056
1057         td->flags |= TD_F_COMPRESS;
1058         td->o.dedupe_percentage = *il;
1059         td->o.refill_buffers = 1;
1060         return 0;
1061 }
1062
1063 static int str_verify_pattern_cb(void *data, const char *input)
1064 {
1065         struct thread_data *td = data;
1066         int ret;
1067
1068         ret = pattern_cb(td->o.verify_pattern, MAX_PATTERN_SIZE, input,
1069                                 &td->o.verify_pattern_bytes);
1070
1071         /*
1072          * VERIFY_META could already be set
1073          */
1074         if (!ret && td->o.verify == VERIFY_NONE)
1075                 td->o.verify = VERIFY_PATTERN;
1076
1077         return ret;
1078 }
1079
1080 static int str_gtod_reduce_cb(void *data, int *il)
1081 {
1082         struct thread_data *td = data;
1083         int val = *il;
1084
1085         td->o.disable_lat = !!val;
1086         td->o.disable_clat = !!val;
1087         td->o.disable_slat = !!val;
1088         td->o.disable_bw = !!val;
1089         td->o.clat_percentiles = !val;
1090         if (val)
1091                 td->tv_cache_mask = 63;
1092
1093         return 0;
1094 }
1095
1096 static int str_gtod_cpu_cb(void *data, long long *il)
1097 {
1098         struct thread_data *td = data;
1099         int val = *il;
1100
1101         td->o.gtod_cpu = val;
1102         td->o.gtod_offload = 1;
1103         return 0;
1104 }
1105
1106 static int str_size_cb(void *data, unsigned long long *__val)
1107 {
1108         struct thread_data *td = data;
1109         unsigned long long v = *__val;
1110
1111         if (parse_is_percent(v)) {
1112                 td->o.size = 0;
1113                 td->o.size_percent = -1ULL - v;
1114         } else
1115                 td->o.size = v;
1116
1117         return 0;
1118 }
1119
1120 static int rw_verify(struct fio_option *o, void *data)
1121 {
1122         struct thread_data *td = data;
1123
1124         if (read_only && td_write(td)) {
1125                 log_err("fio: job <%s> has write bit set, but fio is in"
1126                         " read-only mode\n", td->o.name);
1127                 return 1;
1128         }
1129
1130         return 0;
1131 }
1132
1133 static int gtod_cpu_verify(struct fio_option *o, void *data)
1134 {
1135 #ifndef FIO_HAVE_CPU_AFFINITY
1136         struct thread_data *td = data;
1137
1138         if (td->o.gtod_cpu) {
1139                 log_err("fio: platform must support CPU affinity for"
1140                         "gettimeofday() offloading\n");
1141                 return 1;
1142         }
1143 #endif
1144
1145         return 0;
1146 }
1147
1148 /*
1149  * Option grouping
1150  */
1151 static struct opt_group fio_opt_groups[] = {
1152         {
1153                 .name   = "General",
1154                 .mask   = FIO_OPT_C_GENERAL,
1155         },
1156         {
1157                 .name   = "I/O",
1158                 .mask   = FIO_OPT_C_IO,
1159         },
1160         {
1161                 .name   = "File",
1162                 .mask   = FIO_OPT_C_FILE,
1163         },
1164         {
1165                 .name   = "Statistics",
1166                 .mask   = FIO_OPT_C_STAT,
1167         },
1168         {
1169                 .name   = "Logging",
1170                 .mask   = FIO_OPT_C_LOG,
1171         },
1172         {
1173                 .name   = "Profiles",
1174                 .mask   = FIO_OPT_C_PROFILE,
1175         },
1176         {
1177                 .name   = NULL,
1178         },
1179 };
1180
1181 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1182                                                unsigned int inv_mask)
1183 {
1184         struct opt_group *og;
1185         int i;
1186
1187         if (*mask == inv_mask || !*mask)
1188                 return NULL;
1189
1190         for (i = 0; ogs[i].name; i++) {
1191                 og = &ogs[i];
1192
1193                 if (*mask & og->mask) {
1194                         *mask &= ~(og->mask);
1195                         return og;
1196                 }
1197         }
1198
1199         return NULL;
1200 }
1201
1202 struct opt_group *opt_group_from_mask(unsigned int *mask)
1203 {
1204         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1205 }
1206
1207 static struct opt_group fio_opt_cat_groups[] = {
1208         {
1209                 .name   = "Latency profiling",
1210                 .mask   = FIO_OPT_G_LATPROF,
1211         },
1212         {
1213                 .name   = "Rate",
1214                 .mask   = FIO_OPT_G_RATE,
1215         },
1216         {
1217                 .name   = "Zone",
1218                 .mask   = FIO_OPT_G_ZONE,
1219         },
1220         {
1221                 .name   = "Read/write mix",
1222                 .mask   = FIO_OPT_G_RWMIX,
1223         },
1224         {
1225                 .name   = "Verify",
1226                 .mask   = FIO_OPT_G_VERIFY,
1227         },
1228         {
1229                 .name   = "Trim",
1230                 .mask   = FIO_OPT_G_TRIM,
1231         },
1232         {
1233                 .name   = "I/O Logging",
1234                 .mask   = FIO_OPT_G_IOLOG,
1235         },
1236         {
1237                 .name   = "I/O Depth",
1238                 .mask   = FIO_OPT_G_IO_DEPTH,
1239         },
1240         {
1241                 .name   = "I/O Flow",
1242                 .mask   = FIO_OPT_G_IO_FLOW,
1243         },
1244         {
1245                 .name   = "Description",
1246                 .mask   = FIO_OPT_G_DESC,
1247         },
1248         {
1249                 .name   = "Filename",
1250                 .mask   = FIO_OPT_G_FILENAME,
1251         },
1252         {
1253                 .name   = "General I/O",
1254                 .mask   = FIO_OPT_G_IO_BASIC,
1255         },
1256         {
1257                 .name   = "Cgroups",
1258                 .mask   = FIO_OPT_G_CGROUP,
1259         },
1260         {
1261                 .name   = "Runtime",
1262                 .mask   = FIO_OPT_G_RUNTIME,
1263         },
1264         {
1265                 .name   = "Process",
1266                 .mask   = FIO_OPT_G_PROCESS,
1267         },
1268         {
1269                 .name   = "Job credentials / priority",
1270                 .mask   = FIO_OPT_G_CRED,
1271         },
1272         {
1273                 .name   = "Clock settings",
1274                 .mask   = FIO_OPT_G_CLOCK,
1275         },
1276         {
1277                 .name   = "I/O Type",
1278                 .mask   = FIO_OPT_G_IO_TYPE,
1279         },
1280         {
1281                 .name   = "I/O Thinktime",
1282                 .mask   = FIO_OPT_G_THINKTIME,
1283         },
1284         {
1285                 .name   = "Randomizations",
1286                 .mask   = FIO_OPT_G_RANDOM,
1287         },
1288         {
1289                 .name   = "I/O buffers",
1290                 .mask   = FIO_OPT_G_IO_BUF,
1291         },
1292         {
1293                 .name   = "Tiobench profile",
1294                 .mask   = FIO_OPT_G_TIOBENCH,
1295         },
1296
1297         {
1298                 .name   = NULL,
1299         }
1300 };
1301
1302 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1303 {
1304         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1305 }
1306
1307 /*
1308  * Map of job/command line options
1309  */
1310 struct fio_option fio_options[FIO_MAX_OPTS] = {
1311         {
1312                 .name   = "description",
1313                 .lname  = "Description of job",
1314                 .type   = FIO_OPT_STR_STORE,
1315                 .off1   = td_var_offset(description),
1316                 .help   = "Text job description",
1317                 .category = FIO_OPT_C_GENERAL,
1318                 .group  = FIO_OPT_G_DESC,
1319         },
1320         {
1321                 .name   = "name",
1322                 .lname  = "Job name",
1323                 .type   = FIO_OPT_STR_STORE,
1324                 .off1   = td_var_offset(name),
1325                 .help   = "Name of this job",
1326                 .category = FIO_OPT_C_GENERAL,
1327                 .group  = FIO_OPT_G_DESC,
1328         },
1329         {
1330                 .name   = "filename",
1331                 .lname  = "Filename(s)",
1332                 .type   = FIO_OPT_STR_STORE,
1333                 .off1   = td_var_offset(filename),
1334                 .cb     = str_filename_cb,
1335                 .prio   = -1, /* must come after "directory" */
1336                 .help   = "File(s) to use for the workload",
1337                 .category = FIO_OPT_C_FILE,
1338                 .group  = FIO_OPT_G_FILENAME,
1339         },
1340         {
1341                 .name   = "directory",
1342                 .lname  = "Directory",
1343                 .type   = FIO_OPT_STR_STORE,
1344                 .off1   = td_var_offset(directory),
1345                 .cb     = str_directory_cb,
1346                 .help   = "Directory to store files in",
1347                 .category = FIO_OPT_C_FILE,
1348                 .group  = FIO_OPT_G_FILENAME,
1349         },
1350         {
1351                 .name   = "filename_format",
1352                 .type   = FIO_OPT_STR_STORE,
1353                 .off1   = td_var_offset(filename_format),
1354                 .prio   = -1, /* must come after "directory" */
1355                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1356                 .def    = "$jobname.$jobnum.$filenum",
1357                 .category = FIO_OPT_C_FILE,
1358                 .group  = FIO_OPT_G_FILENAME,
1359         },
1360         {
1361                 .name   = "lockfile",
1362                 .lname  = "Lockfile",
1363                 .type   = FIO_OPT_STR,
1364                 .off1   = td_var_offset(file_lock_mode),
1365                 .help   = "Lock file when doing IO to it",
1366                 .prio   = 1,
1367                 .parent = "filename",
1368                 .hide   = 0,
1369                 .def    = "none",
1370                 .cb     = str_lockfile_cb,
1371                 .category = FIO_OPT_C_FILE,
1372                 .group  = FIO_OPT_G_FILENAME,
1373                 .posval = {
1374                           { .ival = "none",
1375                             .oval = FILE_LOCK_NONE,
1376                             .help = "No file locking",
1377                           },
1378                           { .ival = "exclusive",
1379                             .oval = FILE_LOCK_EXCLUSIVE,
1380                             .help = "Exclusive file lock",
1381                           },
1382                           {
1383                             .ival = "readwrite",
1384                             .oval = FILE_LOCK_READWRITE,
1385                             .help = "Read vs write lock",
1386                           },
1387                 },
1388         },
1389         {
1390                 .name   = "opendir",
1391                 .lname  = "Open directory",
1392                 .type   = FIO_OPT_STR_STORE,
1393                 .off1   = td_var_offset(opendir),
1394                 .cb     = str_opendir_cb,
1395                 .help   = "Recursively add files from this directory and down",
1396                 .category = FIO_OPT_C_FILE,
1397                 .group  = FIO_OPT_G_FILENAME,
1398         },
1399         {
1400                 .name   = "rw",
1401                 .lname  = "Read/write",
1402                 .alias  = "readwrite",
1403                 .type   = FIO_OPT_STR,
1404                 .cb     = str_rw_cb,
1405                 .off1   = td_var_offset(td_ddir),
1406                 .help   = "IO direction",
1407                 .def    = "read",
1408                 .verify = rw_verify,
1409                 .category = FIO_OPT_C_IO,
1410                 .group  = FIO_OPT_G_IO_BASIC,
1411                 .posval = {
1412                           { .ival = "read",
1413                             .oval = TD_DDIR_READ,
1414                             .help = "Sequential read",
1415                           },
1416                           { .ival = "write",
1417                             .oval = TD_DDIR_WRITE,
1418                             .help = "Sequential write",
1419                           },
1420                           { .ival = "trim",
1421                             .oval = TD_DDIR_TRIM,
1422                             .help = "Sequential trim",
1423                           },
1424                           { .ival = "randread",
1425                             .oval = TD_DDIR_RANDREAD,
1426                             .help = "Random read",
1427                           },
1428                           { .ival = "randwrite",
1429                             .oval = TD_DDIR_RANDWRITE,
1430                             .help = "Random write",
1431                           },
1432                           { .ival = "randtrim",
1433                             .oval = TD_DDIR_RANDTRIM,
1434                             .help = "Random trim",
1435                           },
1436                           { .ival = "rw",
1437                             .oval = TD_DDIR_RW,
1438                             .help = "Sequential read and write mix",
1439                           },
1440                           { .ival = "readwrite",
1441                             .oval = TD_DDIR_RW,
1442                             .help = "Sequential read and write mix",
1443                           },
1444                           { .ival = "randrw",
1445                             .oval = TD_DDIR_RANDRW,
1446                             .help = "Random read and write mix"
1447                           },
1448                 },
1449         },
1450         {
1451                 .name   = "rw_sequencer",
1452                 .lname  = "RW Sequencer",
1453                 .type   = FIO_OPT_STR,
1454                 .off1   = td_var_offset(rw_seq),
1455                 .help   = "IO offset generator modifier",
1456                 .def    = "sequential",
1457                 .category = FIO_OPT_C_IO,
1458                 .group  = FIO_OPT_G_IO_BASIC,
1459                 .posval = {
1460                           { .ival = "sequential",
1461                             .oval = RW_SEQ_SEQ,
1462                             .help = "Generate sequential offsets",
1463                           },
1464                           { .ival = "identical",
1465                             .oval = RW_SEQ_IDENT,
1466                             .help = "Generate identical offsets",
1467                           },
1468                 },
1469         },
1470
1471         {
1472                 .name   = "ioengine",
1473                 .lname  = "IO Engine",
1474                 .type   = FIO_OPT_STR_STORE,
1475                 .off1   = td_var_offset(ioengine),
1476                 .help   = "IO engine to use",
1477                 .def    = FIO_PREFERRED_ENGINE,
1478                 .category = FIO_OPT_C_IO,
1479                 .group  = FIO_OPT_G_IO_BASIC,
1480                 .posval = {
1481                           { .ival = "sync",
1482                             .help = "Use read/write",
1483                           },
1484                           { .ival = "psync",
1485                             .help = "Use pread/pwrite",
1486                           },
1487                           { .ival = "vsync",
1488                             .help = "Use readv/writev",
1489                           },
1490 #ifdef CONFIG_PWRITEV
1491                           { .ival = "pvsync",
1492                             .help = "Use preadv/pwritev",
1493                           },
1494 #endif
1495 #ifdef CONFIG_LIBAIO
1496                           { .ival = "libaio",
1497                             .help = "Linux native asynchronous IO",
1498                           },
1499 #endif
1500 #ifdef CONFIG_POSIXAIO
1501                           { .ival = "posixaio",
1502                             .help = "POSIX asynchronous IO",
1503                           },
1504 #endif
1505 #ifdef CONFIG_SOLARISAIO
1506                           { .ival = "solarisaio",
1507                             .help = "Solaris native asynchronous IO",
1508                           },
1509 #endif
1510 #ifdef CONFIG_WINDOWSAIO
1511                           { .ival = "windowsaio",
1512                             .help = "Windows native asynchronous IO"
1513                           },
1514 #endif
1515 #ifdef CONFIG_RBD
1516                           { .ival = "rbd",
1517                             .help = "Rados Block Device asynchronous IO"
1518                           },
1519 #endif
1520                           { .ival = "mmap",
1521                             .help = "Memory mapped IO"
1522                           },
1523 #ifdef CONFIG_LINUX_SPLICE
1524                           { .ival = "splice",
1525                             .help = "splice/vmsplice based IO",
1526                           },
1527                           { .ival = "netsplice",
1528                             .help = "splice/vmsplice to/from the network",
1529                           },
1530 #endif
1531 #ifdef FIO_HAVE_SGIO
1532                           { .ival = "sg",
1533                             .help = "SCSI generic v3 IO",
1534                           },
1535 #endif
1536                           { .ival = "null",
1537                             .help = "Testing engine (no data transfer)",
1538                           },
1539                           { .ival = "net",
1540                             .help = "Network IO",
1541                           },
1542                           { .ival = "cpuio",
1543                             .help = "CPU cycle burner engine",
1544                           },
1545 #ifdef CONFIG_GUASI
1546                           { .ival = "guasi",
1547                             .help = "GUASI IO engine",
1548                           },
1549 #endif
1550 #ifdef FIO_HAVE_BINJECT
1551                           { .ival = "binject",
1552                             .help = "binject direct inject block engine",
1553                           },
1554 #endif
1555 #ifdef CONFIG_RDMA
1556                           { .ival = "rdma",
1557                             .help = "RDMA IO engine",
1558                           },
1559 #endif
1560 #ifdef CONFIG_FUSION_AW
1561                           { .ival = "fusion-aw-sync",
1562                             .help = "Fusion-io atomic write engine",
1563                           },
1564 #endif
1565 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1566                           { .ival = "e4defrag",
1567                             .help = "ext4 defrag engine",
1568                           },
1569 #endif
1570 #ifdef CONFIG_LINUX_FALLOCATE
1571                           { .ival = "falloc",
1572                             .help = "fallocate() file based engine",
1573                           },
1574 #endif
1575 #ifdef CONFIG_GFAPI
1576                           { .ival = "gfapi",
1577                             .help = "Glusterfs libgfapi(sync) based engine"
1578                           },
1579                           { .ival = "gfapi_async",
1580                             .help = "Glusterfs libgfapi(async) based engine"
1581                           },
1582 #endif
1583 #ifdef CONFIG_LIBHDFS
1584                           { .ival = "libhdfs",
1585                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1586                           },
1587 #endif
1588                           { .ival = "external",
1589                             .help = "Load external engine (append name)",
1590                           },
1591                 },
1592         },
1593         {
1594                 .name   = "iodepth",
1595                 .lname  = "IO Depth",
1596                 .type   = FIO_OPT_INT,
1597                 .off1   = td_var_offset(iodepth),
1598                 .help   = "Number of IO buffers to keep in flight",
1599                 .minval = 1,
1600                 .interval = 1,
1601                 .def    = "1",
1602                 .category = FIO_OPT_C_IO,
1603                 .group  = FIO_OPT_G_IO_BASIC,
1604         },
1605         {
1606                 .name   = "iodepth_batch",
1607                 .lname  = "IO Depth batch",
1608                 .alias  = "iodepth_batch_submit",
1609                 .type   = FIO_OPT_INT,
1610                 .off1   = td_var_offset(iodepth_batch),
1611                 .help   = "Number of IO buffers to submit in one go",
1612                 .parent = "iodepth",
1613                 .hide   = 1,
1614                 .minval = 1,
1615                 .interval = 1,
1616                 .def    = "1",
1617                 .category = FIO_OPT_C_IO,
1618                 .group  = FIO_OPT_G_IO_BASIC,
1619         },
1620         {
1621                 .name   = "iodepth_batch_complete",
1622                 .lname  = "IO Depth batch complete",
1623                 .type   = FIO_OPT_INT,
1624                 .off1   = td_var_offset(iodepth_batch_complete),
1625                 .help   = "Number of IO buffers to retrieve in one go",
1626                 .parent = "iodepth",
1627                 .hide   = 1,
1628                 .minval = 0,
1629                 .interval = 1,
1630                 .def    = "1",
1631                 .category = FIO_OPT_C_IO,
1632                 .group  = FIO_OPT_G_IO_BASIC,
1633         },
1634         {
1635                 .name   = "iodepth_low",
1636                 .lname  = "IO Depth batch low",
1637                 .type   = FIO_OPT_INT,
1638                 .off1   = td_var_offset(iodepth_low),
1639                 .help   = "Low water mark for queuing depth",
1640                 .parent = "iodepth",
1641                 .hide   = 1,
1642                 .interval = 1,
1643                 .category = FIO_OPT_C_IO,
1644                 .group  = FIO_OPT_G_IO_BASIC,
1645         },
1646         {
1647                 .name   = "size",
1648                 .lname  = "Size",
1649                 .type   = FIO_OPT_STR_VAL,
1650                 .cb     = str_size_cb,
1651                 .help   = "Total size of device or files",
1652                 .interval = 1024 * 1024,
1653                 .category = FIO_OPT_C_IO,
1654                 .group  = FIO_OPT_G_INVALID,
1655         },
1656         {
1657                 .name   = "io_limit",
1658                 .lname  = "IO Limit",
1659                 .type   = FIO_OPT_STR_VAL,
1660                 .off1   = td_var_offset(io_limit),
1661                 .interval = 1024 * 1024,
1662                 .category = FIO_OPT_C_IO,
1663                 .group  = FIO_OPT_G_INVALID,
1664         },
1665         {
1666                 .name   = "fill_device",
1667                 .lname  = "Fill device",
1668                 .alias  = "fill_fs",
1669                 .type   = FIO_OPT_BOOL,
1670                 .off1   = td_var_offset(fill_device),
1671                 .help   = "Write until an ENOSPC error occurs",
1672                 .def    = "0",
1673                 .category = FIO_OPT_C_FILE,
1674                 .group  = FIO_OPT_G_INVALID,
1675         },
1676         {
1677                 .name   = "filesize",
1678                 .lname  = "File size",
1679                 .type   = FIO_OPT_STR_VAL,
1680                 .off1   = td_var_offset(file_size_low),
1681                 .off2   = td_var_offset(file_size_high),
1682                 .minval = 1,
1683                 .help   = "Size of individual files",
1684                 .interval = 1024 * 1024,
1685                 .category = FIO_OPT_C_FILE,
1686                 .group  = FIO_OPT_G_INVALID,
1687         },
1688         {
1689                 .name   = "file_append",
1690                 .lname  = "File append",
1691                 .type   = FIO_OPT_BOOL,
1692                 .off1   = td_var_offset(file_append),
1693                 .help   = "IO will start at the end of the file(s)",
1694                 .def    = "0",
1695                 .category = FIO_OPT_C_FILE,
1696                 .group  = FIO_OPT_G_INVALID,
1697         },
1698         {
1699                 .name   = "offset",
1700                 .lname  = "IO offset",
1701                 .alias  = "fileoffset",
1702                 .type   = FIO_OPT_STR_VAL,
1703                 .off1   = td_var_offset(start_offset),
1704                 .help   = "Start IO from this offset",
1705                 .def    = "0",
1706                 .interval = 1024 * 1024,
1707                 .category = FIO_OPT_C_IO,
1708                 .group  = FIO_OPT_G_INVALID,
1709         },
1710         {
1711                 .name   = "offset_increment",
1712                 .lname  = "IO offset increment",
1713                 .type   = FIO_OPT_STR_VAL,
1714                 .off1   = td_var_offset(offset_increment),
1715                 .help   = "What is the increment from one offset to the next",
1716                 .parent = "offset",
1717                 .hide   = 1,
1718                 .def    = "0",
1719                 .interval = 1024 * 1024,
1720                 .category = FIO_OPT_C_IO,
1721                 .group  = FIO_OPT_G_INVALID,
1722         },
1723         {
1724                 .name   = "number_ios",
1725                 .lname  = "Number of IOs to perform",
1726                 .type   = FIO_OPT_STR_VAL,
1727                 .off1   = td_var_offset(number_ios),
1728                 .help   = "Force job completion of this number of IOs",
1729                 .def    = "0",
1730                 .category = FIO_OPT_C_IO,
1731                 .group  = FIO_OPT_G_INVALID,
1732         },
1733         {
1734                 .name   = "bs",
1735                 .lname  = "Block size",
1736                 .alias  = "blocksize",
1737                 .type   = FIO_OPT_INT,
1738                 .off1   = td_var_offset(bs[DDIR_READ]),
1739                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1740                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1741                 .minval = 1,
1742                 .help   = "Block size unit",
1743                 .def    = "4k",
1744                 .parent = "rw",
1745                 .hide   = 1,
1746                 .interval = 512,
1747                 .category = FIO_OPT_C_IO,
1748                 .group  = FIO_OPT_G_INVALID,
1749         },
1750         {
1751                 .name   = "ba",
1752                 .lname  = "Block size align",
1753                 .alias  = "blockalign",
1754                 .type   = FIO_OPT_INT,
1755                 .off1   = td_var_offset(ba[DDIR_READ]),
1756                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1757                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1758                 .minval = 1,
1759                 .help   = "IO block offset alignment",
1760                 .parent = "rw",
1761                 .hide   = 1,
1762                 .interval = 512,
1763                 .category = FIO_OPT_C_IO,
1764                 .group  = FIO_OPT_G_INVALID,
1765         },
1766         {
1767                 .name   = "bsrange",
1768                 .lname  = "Block size range",
1769                 .alias  = "blocksize_range",
1770                 .type   = FIO_OPT_RANGE,
1771                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1772                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1773                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1774                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1775                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1776                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1777                 .minval = 1,
1778                 .help   = "Set block size range (in more detail than bs)",
1779                 .parent = "rw",
1780                 .hide   = 1,
1781                 .interval = 4096,
1782                 .category = FIO_OPT_C_IO,
1783                 .group  = FIO_OPT_G_INVALID,
1784         },
1785         {
1786                 .name   = "bssplit",
1787                 .lname  = "Block size split",
1788                 .type   = FIO_OPT_STR,
1789                 .cb     = str_bssplit_cb,
1790                 .help   = "Set a specific mix of block sizes",
1791                 .parent = "rw",
1792                 .hide   = 1,
1793                 .category = FIO_OPT_C_IO,
1794                 .group  = FIO_OPT_G_INVALID,
1795         },
1796         {
1797                 .name   = "bs_unaligned",
1798                 .lname  = "Block size unaligned",
1799                 .alias  = "blocksize_unaligned",
1800                 .type   = FIO_OPT_STR_SET,
1801                 .off1   = td_var_offset(bs_unaligned),
1802                 .help   = "Don't sector align IO buffer sizes",
1803                 .parent = "rw",
1804                 .hide   = 1,
1805                 .category = FIO_OPT_C_IO,
1806                 .group  = FIO_OPT_G_INVALID,
1807         },
1808         {
1809                 .name   = "bs_is_seq_rand",
1810                 .lname  = "Block size division is seq/random (not read/write)",
1811                 .type   = FIO_OPT_BOOL,
1812                 .off1   = td_var_offset(bs_is_seq_rand),
1813                 .help   = "Consider any blocksize setting to be sequential,ramdom",
1814                 .def    = "0",
1815                 .parent = "blocksize",
1816                 .category = FIO_OPT_C_IO,
1817                 .group  = FIO_OPT_G_INVALID,
1818         },
1819         {
1820                 .name   = "randrepeat",
1821                 .lname  = "Random repeatable",
1822                 .type   = FIO_OPT_BOOL,
1823                 .off1   = td_var_offset(rand_repeatable),
1824                 .help   = "Use repeatable random IO pattern",
1825                 .def    = "1",
1826                 .parent = "rw",
1827                 .hide   = 1,
1828                 .category = FIO_OPT_C_IO,
1829                 .group  = FIO_OPT_G_RANDOM,
1830         },
1831         {
1832                 .name   = "randseed",
1833                 .lname  = "The random generator seed",
1834                 .type   = FIO_OPT_STR_VAL,
1835                 .off1   = td_var_offset(rand_seed),
1836                 .help   = "Set the random generator seed value",
1837                 .parent = "rw",
1838                 .category = FIO_OPT_C_IO,
1839                 .group  = FIO_OPT_G_RANDOM,
1840         },
1841         {
1842                 .name   = "use_os_rand",
1843                 .lname  = "Use OS random",
1844                 .type   = FIO_OPT_BOOL,
1845                 .off1   = td_var_offset(use_os_rand),
1846                 .help   = "Set to use OS random generator",
1847                 .def    = "0",
1848                 .parent = "rw",
1849                 .hide   = 1,
1850                 .category = FIO_OPT_C_IO,
1851                 .group  = FIO_OPT_G_RANDOM,
1852         },
1853         {
1854                 .name   = "norandommap",
1855                 .lname  = "No randommap",
1856                 .type   = FIO_OPT_STR_SET,
1857                 .off1   = td_var_offset(norandommap),
1858                 .help   = "Accept potential duplicate random blocks",
1859                 .parent = "rw",
1860                 .hide   = 1,
1861                 .hide_on_set = 1,
1862                 .category = FIO_OPT_C_IO,
1863                 .group  = FIO_OPT_G_RANDOM,
1864         },
1865         {
1866                 .name   = "softrandommap",
1867                 .lname  = "Soft randommap",
1868                 .type   = FIO_OPT_BOOL,
1869                 .off1   = td_var_offset(softrandommap),
1870                 .help   = "Set norandommap if randommap allocation fails",
1871                 .parent = "norandommap",
1872                 .hide   = 1,
1873                 .def    = "0",
1874                 .category = FIO_OPT_C_IO,
1875                 .group  = FIO_OPT_G_RANDOM,
1876         },
1877         {
1878                 .name   = "random_generator",
1879                 .type   = FIO_OPT_STR,
1880                 .off1   = td_var_offset(random_generator),
1881                 .help   = "Type of random number generator to use",
1882                 .def    = "tausworthe",
1883                 .posval = {
1884                           { .ival = "tausworthe",
1885                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1886                             .help = "Strong Tausworthe generator",
1887                           },
1888                           { .ival = "lfsr",
1889                             .oval = FIO_RAND_GEN_LFSR,
1890                             .help = "Variable length LFSR",
1891                           },
1892                 },
1893                 .category = FIO_OPT_C_IO,
1894                 .group  = FIO_OPT_G_RANDOM,
1895         },
1896         {
1897                 .name   = "random_distribution",
1898                 .type   = FIO_OPT_STR,
1899                 .off1   = td_var_offset(random_distribution),
1900                 .cb     = str_random_distribution_cb,
1901                 .help   = "Random offset distribution generator",
1902                 .def    = "random",
1903                 .posval = {
1904                           { .ival = "random",
1905                             .oval = FIO_RAND_DIST_RANDOM,
1906                             .help = "Completely random",
1907                           },
1908                           { .ival = "zipf",
1909                             .oval = FIO_RAND_DIST_ZIPF,
1910                             .help = "Zipf distribution",
1911                           },
1912                           { .ival = "pareto",
1913                             .oval = FIO_RAND_DIST_PARETO,
1914                             .help = "Pareto distribution",
1915                           },
1916                 },
1917                 .category = FIO_OPT_C_IO,
1918                 .group  = FIO_OPT_G_RANDOM,
1919         },
1920         {
1921                 .name   = "percentage_random",
1922                 .lname  = "Percentage Random",
1923                 .type   = FIO_OPT_INT,
1924                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1925                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1926                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1927                 .maxval = 100,
1928                 .help   = "Percentage of seq/random mix that should be random",
1929                 .def    = "100,100,100",
1930                 .interval = 5,
1931                 .inverse = "percentage_sequential",
1932                 .category = FIO_OPT_C_IO,
1933                 .group  = FIO_OPT_G_RANDOM,
1934         },
1935         {
1936                 .name   = "percentage_sequential",
1937                 .lname  = "Percentage Sequential",
1938                 .type   = FIO_OPT_DEPRECATED,
1939                 .category = FIO_OPT_C_IO,
1940                 .group  = FIO_OPT_G_RANDOM,
1941         },
1942         {
1943                 .name   = "allrandrepeat",
1944                 .type   = FIO_OPT_BOOL,
1945                 .off1   = td_var_offset(allrand_repeatable),
1946                 .help   = "Use repeatable random numbers for everything",
1947                 .def    = "0",
1948                 .category = FIO_OPT_C_IO,
1949                 .group  = FIO_OPT_G_RANDOM,
1950         },
1951         {
1952                 .name   = "nrfiles",
1953                 .lname  = "Number of files",
1954                 .alias  = "nr_files",
1955                 .type   = FIO_OPT_INT,
1956                 .off1   = td_var_offset(nr_files),
1957                 .help   = "Split job workload between this number of files",
1958                 .def    = "1",
1959                 .interval = 1,
1960                 .category = FIO_OPT_C_FILE,
1961                 .group  = FIO_OPT_G_INVALID,
1962         },
1963         {
1964                 .name   = "openfiles",
1965                 .lname  = "Number of open files",
1966                 .type   = FIO_OPT_INT,
1967                 .off1   = td_var_offset(open_files),
1968                 .help   = "Number of files to keep open at the same time",
1969                 .category = FIO_OPT_C_FILE,
1970                 .group  = FIO_OPT_G_INVALID,
1971         },
1972         {
1973                 .name   = "file_service_type",
1974                 .lname  = "File service type",
1975                 .type   = FIO_OPT_STR,
1976                 .cb     = str_fst_cb,
1977                 .off1   = td_var_offset(file_service_type),
1978                 .help   = "How to select which file to service next",
1979                 .def    = "roundrobin",
1980                 .category = FIO_OPT_C_FILE,
1981                 .group  = FIO_OPT_G_INVALID,
1982                 .posval = {
1983                           { .ival = "random",
1984                             .oval = FIO_FSERVICE_RANDOM,
1985                             .help = "Choose a file at random",
1986                           },
1987                           { .ival = "roundrobin",
1988                             .oval = FIO_FSERVICE_RR,
1989                             .help = "Round robin select files",
1990                           },
1991                           { .ival = "sequential",
1992                             .oval = FIO_FSERVICE_SEQ,
1993                             .help = "Finish one file before moving to the next",
1994                           },
1995                 },
1996                 .parent = "nrfiles",
1997                 .hide   = 1,
1998         },
1999 #ifdef CONFIG_POSIX_FALLOCATE
2000         {
2001                 .name   = "fallocate",
2002                 .lname  = "Fallocate",
2003                 .type   = FIO_OPT_STR,
2004                 .off1   = td_var_offset(fallocate_mode),
2005                 .help   = "Whether pre-allocation is performed when laying out files",
2006                 .def    = "posix",
2007                 .category = FIO_OPT_C_FILE,
2008                 .group  = FIO_OPT_G_INVALID,
2009                 .posval = {
2010                           { .ival = "none",
2011                             .oval = FIO_FALLOCATE_NONE,
2012                             .help = "Do not pre-allocate space",
2013                           },
2014                           { .ival = "posix",
2015                             .oval = FIO_FALLOCATE_POSIX,
2016                             .help = "Use posix_fallocate()",
2017                           },
2018 #ifdef CONFIG_LINUX_FALLOCATE
2019                           { .ival = "keep",
2020                             .oval = FIO_FALLOCATE_KEEP_SIZE,
2021                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
2022                           },
2023 #endif
2024                           /* Compatibility with former boolean values */
2025                           { .ival = "0",
2026                             .oval = FIO_FALLOCATE_NONE,
2027                             .help = "Alias for 'none'",
2028                           },
2029                           { .ival = "1",
2030                             .oval = FIO_FALLOCATE_POSIX,
2031                             .help = "Alias for 'posix'",
2032                           },
2033                 },
2034         },
2035 #endif  /* CONFIG_POSIX_FALLOCATE */
2036         {
2037                 .name   = "fadvise_hint",
2038                 .lname  = "Fadvise hint",
2039                 .type   = FIO_OPT_BOOL,
2040                 .off1   = td_var_offset(fadvise_hint),
2041                 .help   = "Use fadvise() to advise the kernel on IO pattern",
2042                 .def    = "1",
2043                 .category = FIO_OPT_C_FILE,
2044                 .group  = FIO_OPT_G_INVALID,
2045         },
2046         {
2047                 .name   = "fsync",
2048                 .lname  = "Fsync",
2049                 .type   = FIO_OPT_INT,
2050                 .off1   = td_var_offset(fsync_blocks),
2051                 .help   = "Issue fsync for writes every given number of blocks",
2052                 .def    = "0",
2053                 .interval = 1,
2054                 .category = FIO_OPT_C_FILE,
2055                 .group  = FIO_OPT_G_INVALID,
2056         },
2057         {
2058                 .name   = "fdatasync",
2059                 .lname  = "Fdatasync",
2060                 .type   = FIO_OPT_INT,
2061                 .off1   = td_var_offset(fdatasync_blocks),
2062                 .help   = "Issue fdatasync for writes every given number of blocks",
2063                 .def    = "0",
2064                 .interval = 1,
2065                 .category = FIO_OPT_C_FILE,
2066                 .group  = FIO_OPT_G_INVALID,
2067         },
2068         {
2069                 .name   = "write_barrier",
2070                 .lname  = "Write barrier",
2071                 .type   = FIO_OPT_INT,
2072                 .off1   = td_var_offset(barrier_blocks),
2073                 .help   = "Make every Nth write a barrier write",
2074                 .def    = "0",
2075                 .interval = 1,
2076                 .category = FIO_OPT_C_IO,
2077                 .group  = FIO_OPT_G_INVALID,
2078         },
2079 #ifdef CONFIG_SYNC_FILE_RANGE
2080         {
2081                 .name   = "sync_file_range",
2082                 .lname  = "Sync file range",
2083                 .posval = {
2084                           { .ival = "wait_before",
2085                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2086                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2087                             .orval  = 1,
2088                           },
2089                           { .ival = "write",
2090                             .oval = SYNC_FILE_RANGE_WRITE,
2091                             .help = "SYNC_FILE_RANGE_WRITE",
2092                             .orval  = 1,
2093                           },
2094                           {
2095                             .ival = "wait_after",
2096                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2097                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2098                             .orval  = 1,
2099                           },
2100                 },
2101                 .type   = FIO_OPT_STR_MULTI,
2102                 .cb     = str_sfr_cb,
2103                 .off1   = td_var_offset(sync_file_range),
2104                 .help   = "Use sync_file_range()",
2105                 .category = FIO_OPT_C_FILE,
2106                 .group  = FIO_OPT_G_INVALID,
2107         },
2108 #endif
2109         {
2110                 .name   = "direct",
2111                 .lname  = "Direct I/O",
2112                 .type   = FIO_OPT_BOOL,
2113                 .off1   = td_var_offset(odirect),
2114                 .help   = "Use O_DIRECT IO (negates buffered)",
2115                 .def    = "0",
2116                 .inverse = "buffered",
2117                 .category = FIO_OPT_C_IO,
2118                 .group  = FIO_OPT_G_IO_TYPE,
2119         },
2120         {
2121                 .name   = "atomic",
2122                 .lname  = "Atomic I/O",
2123                 .type   = FIO_OPT_BOOL,
2124                 .off1   = td_var_offset(oatomic),
2125                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2126                 .def    = "0",
2127                 .category = FIO_OPT_C_IO,
2128                 .group  = FIO_OPT_G_IO_TYPE,
2129         },
2130         {
2131                 .name   = "buffered",
2132                 .lname  = "Buffered I/O",
2133                 .type   = FIO_OPT_BOOL,
2134                 .off1   = td_var_offset(odirect),
2135                 .neg    = 1,
2136                 .help   = "Use buffered IO (negates direct)",
2137                 .def    = "1",
2138                 .inverse = "direct",
2139                 .category = FIO_OPT_C_IO,
2140                 .group  = FIO_OPT_G_IO_TYPE,
2141         },
2142         {
2143                 .name   = "overwrite",
2144                 .lname  = "Overwrite",
2145                 .type   = FIO_OPT_BOOL,
2146                 .off1   = td_var_offset(overwrite),
2147                 .help   = "When writing, set whether to overwrite current data",
2148                 .def    = "0",
2149                 .category = FIO_OPT_C_FILE,
2150                 .group  = FIO_OPT_G_INVALID,
2151         },
2152         {
2153                 .name   = "loops",
2154                 .lname  = "Loops",
2155                 .type   = FIO_OPT_INT,
2156                 .off1   = td_var_offset(loops),
2157                 .help   = "Number of times to run the job",
2158                 .def    = "1",
2159                 .interval = 1,
2160                 .category = FIO_OPT_C_GENERAL,
2161                 .group  = FIO_OPT_G_RUNTIME,
2162         },
2163         {
2164                 .name   = "numjobs",
2165                 .lname  = "Number of jobs",
2166                 .type   = FIO_OPT_INT,
2167                 .off1   = td_var_offset(numjobs),
2168                 .help   = "Duplicate this job this many times",
2169                 .def    = "1",
2170                 .interval = 1,
2171                 .category = FIO_OPT_C_GENERAL,
2172                 .group  = FIO_OPT_G_RUNTIME,
2173         },
2174         {
2175                 .name   = "startdelay",
2176                 .lname  = "Start delay",
2177                 .type   = FIO_OPT_STR_VAL_TIME,
2178                 .off1   = td_var_offset(start_delay),
2179                 .off2   = td_var_offset(start_delay_high),
2180                 .help   = "Only start job when this period has passed",
2181                 .def    = "0",
2182                 .is_seconds = 1,
2183                 .category = FIO_OPT_C_GENERAL,
2184                 .group  = FIO_OPT_G_RUNTIME,
2185         },
2186         {
2187                 .name   = "runtime",
2188                 .lname  = "Runtime",
2189                 .alias  = "timeout",
2190                 .type   = FIO_OPT_STR_VAL_TIME,
2191                 .off1   = td_var_offset(timeout),
2192                 .help   = "Stop workload when this amount of time has passed",
2193                 .def    = "0",
2194                 .is_seconds = 1,
2195                 .category = FIO_OPT_C_GENERAL,
2196                 .group  = FIO_OPT_G_RUNTIME,
2197         },
2198         {
2199                 .name   = "time_based",
2200                 .lname  = "Time based",
2201                 .type   = FIO_OPT_STR_SET,
2202                 .off1   = td_var_offset(time_based),
2203                 .help   = "Keep running until runtime/timeout is met",
2204                 .category = FIO_OPT_C_GENERAL,
2205                 .group  = FIO_OPT_G_RUNTIME,
2206         },
2207         {
2208                 .name   = "verify_only",
2209                 .lname  = "Verify only",
2210                 .type   = FIO_OPT_STR_SET,
2211                 .off1   = td_var_offset(verify_only),
2212                 .help   = "Verifies previously written data is still valid",
2213                 .category = FIO_OPT_C_GENERAL,
2214                 .group  = FIO_OPT_G_RUNTIME,
2215         },
2216         {
2217                 .name   = "ramp_time",
2218                 .lname  = "Ramp time",
2219                 .type   = FIO_OPT_STR_VAL_TIME,
2220                 .off1   = td_var_offset(ramp_time),
2221                 .help   = "Ramp up time before measuring performance",
2222                 .is_seconds = 1,
2223                 .category = FIO_OPT_C_GENERAL,
2224                 .group  = FIO_OPT_G_RUNTIME,
2225         },
2226         {
2227                 .name   = "clocksource",
2228                 .lname  = "Clock source",
2229                 .type   = FIO_OPT_STR,
2230                 .cb     = fio_clock_source_cb,
2231                 .off1   = td_var_offset(clocksource),
2232                 .help   = "What type of timing source to use",
2233                 .category = FIO_OPT_C_GENERAL,
2234                 .group  = FIO_OPT_G_CLOCK,
2235                 .posval = {
2236 #ifdef CONFIG_GETTIMEOFDAY
2237                           { .ival = "gettimeofday",
2238                             .oval = CS_GTOD,
2239                             .help = "Use gettimeofday(2) for timing",
2240                           },
2241 #endif
2242 #ifdef CONFIG_CLOCK_GETTIME
2243                           { .ival = "clock_gettime",
2244                             .oval = CS_CGETTIME,
2245                             .help = "Use clock_gettime(2) for timing",
2246                           },
2247 #endif
2248 #ifdef ARCH_HAVE_CPU_CLOCK
2249                           { .ival = "cpu",
2250                             .oval = CS_CPUCLOCK,
2251                             .help = "Use CPU private clock",
2252                           },
2253 #endif
2254                 },
2255         },
2256         {
2257                 .name   = "mem",
2258                 .alias  = "iomem",
2259                 .lname  = "I/O Memory",
2260                 .type   = FIO_OPT_STR,
2261                 .cb     = str_mem_cb,
2262                 .off1   = td_var_offset(mem_type),
2263                 .help   = "Backing type for IO buffers",
2264                 .def    = "malloc",
2265                 .category = FIO_OPT_C_IO,
2266                 .group  = FIO_OPT_G_INVALID,
2267                 .posval = {
2268                           { .ival = "malloc",
2269                             .oval = MEM_MALLOC,
2270                             .help = "Use malloc(3) for IO buffers",
2271                           },
2272 #ifndef CONFIG_NO_SHM
2273                           { .ival = "shm",
2274                             .oval = MEM_SHM,
2275                             .help = "Use shared memory segments for IO buffers",
2276                           },
2277 #ifdef FIO_HAVE_HUGETLB
2278                           { .ival = "shmhuge",
2279                             .oval = MEM_SHMHUGE,
2280                             .help = "Like shm, but use huge pages",
2281                           },
2282 #endif
2283 #endif
2284                           { .ival = "mmap",
2285                             .oval = MEM_MMAP,
2286                             .help = "Use mmap(2) (file or anon) for IO buffers",
2287                           },
2288 #ifdef FIO_HAVE_HUGETLB
2289                           { .ival = "mmaphuge",
2290                             .oval = MEM_MMAPHUGE,
2291                             .help = "Like mmap, but use huge pages",
2292                           },
2293 #endif
2294                   },
2295         },
2296         {
2297                 .name   = "iomem_align",
2298                 .alias  = "mem_align",
2299                 .lname  = "I/O memory alignment",
2300                 .type   = FIO_OPT_INT,
2301                 .off1   = td_var_offset(mem_align),
2302                 .minval = 0,
2303                 .help   = "IO memory buffer offset alignment",
2304                 .def    = "0",
2305                 .parent = "iomem",
2306                 .hide   = 1,
2307                 .category = FIO_OPT_C_IO,
2308                 .group  = FIO_OPT_G_INVALID,
2309         },
2310         {
2311                 .name   = "verify",
2312                 .lname  = "Verify",
2313                 .type   = FIO_OPT_STR,
2314                 .off1   = td_var_offset(verify),
2315                 .help   = "Verify data written",
2316                 .def    = "0",
2317                 .category = FIO_OPT_C_IO,
2318                 .group  = FIO_OPT_G_VERIFY,
2319                 .posval = {
2320                           { .ival = "0",
2321                             .oval = VERIFY_NONE,
2322                             .help = "Don't do IO verification",
2323                           },
2324                           { .ival = "md5",
2325                             .oval = VERIFY_MD5,
2326                             .help = "Use md5 checksums for verification",
2327                           },
2328                           { .ival = "crc64",
2329                             .oval = VERIFY_CRC64,
2330                             .help = "Use crc64 checksums for verification",
2331                           },
2332                           { .ival = "crc32",
2333                             .oval = VERIFY_CRC32,
2334                             .help = "Use crc32 checksums for verification",
2335                           },
2336                           { .ival = "crc32c-intel",
2337                             .oval = VERIFY_CRC32C,
2338                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2339                           },
2340                           { .ival = "crc32c",
2341                             .oval = VERIFY_CRC32C,
2342                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2343                           },
2344                           { .ival = "crc16",
2345                             .oval = VERIFY_CRC16,
2346                             .help = "Use crc16 checksums for verification",
2347                           },
2348                           { .ival = "crc7",
2349                             .oval = VERIFY_CRC7,
2350                             .help = "Use crc7 checksums for verification",
2351                           },
2352                           { .ival = "sha1",
2353                             .oval = VERIFY_SHA1,
2354                             .help = "Use sha1 checksums for verification",
2355                           },
2356                           { .ival = "sha256",
2357                             .oval = VERIFY_SHA256,
2358                             .help = "Use sha256 checksums for verification",
2359                           },
2360                           { .ival = "sha512",
2361                             .oval = VERIFY_SHA512,
2362                             .help = "Use sha512 checksums for verification",
2363                           },
2364                           { .ival = "xxhash",
2365                             .oval = VERIFY_XXHASH,
2366                             .help = "Use xxhash checksums for verification",
2367                           },
2368                           { .ival = "meta",
2369                             .oval = VERIFY_META,
2370                             .help = "Use io information",
2371                           },
2372                           {
2373                             .ival = "null",
2374                             .oval = VERIFY_NULL,
2375                             .help = "Pretend to verify",
2376                           },
2377                 },
2378         },
2379         {
2380                 .name   = "do_verify",
2381                 .lname  = "Perform verify step",
2382                 .type   = FIO_OPT_BOOL,
2383                 .off1   = td_var_offset(do_verify),
2384                 .help   = "Run verification stage after write",
2385                 .def    = "1",
2386                 .parent = "verify",
2387                 .hide   = 1,
2388                 .category = FIO_OPT_C_IO,
2389                 .group  = FIO_OPT_G_VERIFY,
2390         },
2391         {
2392                 .name   = "verifysort",
2393                 .lname  = "Verify sort",
2394                 .type   = FIO_OPT_BOOL,
2395                 .off1   = td_var_offset(verifysort),
2396                 .help   = "Sort written verify blocks for read back",
2397                 .def    = "1",
2398                 .parent = "verify",
2399                 .hide   = 1,
2400                 .category = FIO_OPT_C_IO,
2401                 .group  = FIO_OPT_G_VERIFY,
2402         },
2403         {
2404                 .name   = "verifysort_nr",
2405                 .type   = FIO_OPT_INT,
2406                 .off1   = td_var_offset(verifysort_nr),
2407                 .help   = "Pre-load and sort verify blocks for a read workload",
2408                 .minval = 0,
2409                 .maxval = 131072,
2410                 .def    = "1024",
2411                 .parent = "verify",
2412                 .category = FIO_OPT_C_IO,
2413                 .group  = FIO_OPT_G_VERIFY,
2414         },
2415         {
2416                 .name   = "verify_interval",
2417                 .lname  = "Verify interval",
2418                 .type   = FIO_OPT_INT,
2419                 .off1   = td_var_offset(verify_interval),
2420                 .minval = 2 * sizeof(struct verify_header),
2421                 .help   = "Store verify buffer header every N bytes",
2422                 .parent = "verify",
2423                 .hide   = 1,
2424                 .interval = 2 * sizeof(struct verify_header),
2425                 .category = FIO_OPT_C_IO,
2426                 .group  = FIO_OPT_G_VERIFY,
2427         },
2428         {
2429                 .name   = "verify_offset",
2430                 .lname  = "Verify offset",
2431                 .type   = FIO_OPT_INT,
2432                 .help   = "Offset verify header location by N bytes",
2433                 .off1   = td_var_offset(verify_offset),
2434                 .minval = sizeof(struct verify_header),
2435                 .parent = "verify",
2436                 .hide   = 1,
2437                 .category = FIO_OPT_C_IO,
2438                 .group  = FIO_OPT_G_VERIFY,
2439         },
2440         {
2441                 .name   = "verify_pattern",
2442                 .lname  = "Verify pattern",
2443                 .type   = FIO_OPT_STR,
2444                 .cb     = str_verify_pattern_cb,
2445                 .help   = "Fill pattern for IO buffers",
2446                 .parent = "verify",
2447                 .hide   = 1,
2448                 .category = FIO_OPT_C_IO,
2449                 .group  = FIO_OPT_G_VERIFY,
2450         },
2451         {
2452                 .name   = "verify_fatal",
2453                 .lname  = "Verify fatal",
2454                 .type   = FIO_OPT_BOOL,
2455                 .off1   = td_var_offset(verify_fatal),
2456                 .def    = "0",
2457                 .help   = "Exit on a single verify failure, don't continue",
2458                 .parent = "verify",
2459                 .hide   = 1,
2460                 .category = FIO_OPT_C_IO,
2461                 .group  = FIO_OPT_G_VERIFY,
2462         },
2463         {
2464                 .name   = "verify_dump",
2465                 .lname  = "Verify dump",
2466                 .type   = FIO_OPT_BOOL,
2467                 .off1   = td_var_offset(verify_dump),
2468                 .def    = "0",
2469                 .help   = "Dump contents of good and bad blocks on failure",
2470                 .parent = "verify",
2471                 .hide   = 1,
2472                 .category = FIO_OPT_C_IO,
2473                 .group  = FIO_OPT_G_VERIFY,
2474         },
2475         {
2476                 .name   = "verify_async",
2477                 .lname  = "Verify asynchronously",
2478                 .type   = FIO_OPT_INT,
2479                 .off1   = td_var_offset(verify_async),
2480                 .def    = "0",
2481                 .help   = "Number of async verifier threads to use",
2482                 .parent = "verify",
2483                 .hide   = 1,
2484                 .category = FIO_OPT_C_IO,
2485                 .group  = FIO_OPT_G_VERIFY,
2486         },
2487         {
2488                 .name   = "verify_backlog",
2489                 .lname  = "Verify backlog",
2490                 .type   = FIO_OPT_STR_VAL,
2491                 .off1   = td_var_offset(verify_backlog),
2492                 .help   = "Verify after this number of blocks are written",
2493                 .parent = "verify",
2494                 .hide   = 1,
2495                 .category = FIO_OPT_C_IO,
2496                 .group  = FIO_OPT_G_VERIFY,
2497         },
2498         {
2499                 .name   = "verify_backlog_batch",
2500                 .lname  = "Verify backlog batch",
2501                 .type   = FIO_OPT_INT,
2502                 .off1   = td_var_offset(verify_batch),
2503                 .help   = "Verify this number of IO blocks",
2504                 .parent = "verify",
2505                 .hide   = 1,
2506                 .category = FIO_OPT_C_IO,
2507                 .group  = FIO_OPT_G_VERIFY,
2508         },
2509 #ifdef FIO_HAVE_CPU_AFFINITY
2510         {
2511                 .name   = "verify_async_cpus",
2512                 .lname  = "Async verify CPUs",
2513                 .type   = FIO_OPT_STR,
2514                 .cb     = str_verify_cpus_allowed_cb,
2515                 .help   = "Set CPUs allowed for async verify threads",
2516                 .parent = "verify_async",
2517                 .hide   = 1,
2518                 .category = FIO_OPT_C_IO,
2519                 .group  = FIO_OPT_G_VERIFY,
2520         },
2521 #endif
2522         {
2523                 .name   = "experimental_verify",
2524                 .off1   = td_var_offset(experimental_verify),
2525                 .type   = FIO_OPT_BOOL,
2526                 .help   = "Enable experimental verification",
2527                 .category = FIO_OPT_C_IO,
2528                 .group  = FIO_OPT_G_VERIFY,
2529         },
2530 #ifdef FIO_HAVE_TRIM
2531         {
2532                 .name   = "trim_percentage",
2533                 .lname  = "Trim percentage",
2534                 .type   = FIO_OPT_INT,
2535                 .off1   = td_var_offset(trim_percentage),
2536                 .minval = 0,
2537                 .maxval = 100,
2538                 .help   = "Number of verify blocks to discard/trim",
2539                 .parent = "verify",
2540                 .def    = "0",
2541                 .interval = 1,
2542                 .hide   = 1,
2543                 .category = FIO_OPT_C_IO,
2544                 .group  = FIO_OPT_G_TRIM,
2545         },
2546         {
2547                 .name   = "trim_verify_zero",
2548                 .lname  = "Verify trim zero",
2549                 .type   = FIO_OPT_BOOL,
2550                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2551                 .off1   = td_var_offset(trim_zero),
2552                 .parent = "trim_percentage",
2553                 .hide   = 1,
2554                 .def    = "1",
2555                 .category = FIO_OPT_C_IO,
2556                 .group  = FIO_OPT_G_TRIM,
2557         },
2558         {
2559                 .name   = "trim_backlog",
2560                 .lname  = "Trim backlog",
2561                 .type   = FIO_OPT_STR_VAL,
2562                 .off1   = td_var_offset(trim_backlog),
2563                 .help   = "Trim after this number of blocks are written",
2564                 .parent = "trim_percentage",
2565                 .hide   = 1,
2566                 .interval = 1,
2567                 .category = FIO_OPT_C_IO,
2568                 .group  = FIO_OPT_G_TRIM,
2569         },
2570         {
2571                 .name   = "trim_backlog_batch",
2572                 .lname  = "Trim backlog batch",
2573                 .type   = FIO_OPT_INT,
2574                 .off1   = td_var_offset(trim_batch),
2575                 .help   = "Trim this number of IO blocks",
2576                 .parent = "trim_percentage",
2577                 .hide   = 1,
2578                 .interval = 1,
2579                 .category = FIO_OPT_C_IO,
2580                 .group  = FIO_OPT_G_TRIM,
2581         },
2582 #endif
2583         {
2584                 .name   = "write_iolog",
2585                 .lname  = "Write I/O log",
2586                 .type   = FIO_OPT_STR_STORE,
2587                 .off1   = td_var_offset(write_iolog_file),
2588                 .help   = "Store IO pattern to file",
2589                 .category = FIO_OPT_C_IO,
2590                 .group  = FIO_OPT_G_IOLOG,
2591         },
2592         {
2593                 .name   = "read_iolog",
2594                 .lname  = "Read I/O log",
2595                 .type   = FIO_OPT_STR_STORE,
2596                 .off1   = td_var_offset(read_iolog_file),
2597                 .help   = "Playback IO pattern from file",
2598                 .category = FIO_OPT_C_IO,
2599                 .group  = FIO_OPT_G_IOLOG,
2600         },
2601         {
2602                 .name   = "replay_no_stall",
2603                 .lname  = "Don't stall on replay",
2604                 .type   = FIO_OPT_BOOL,
2605                 .off1   = td_var_offset(no_stall),
2606                 .def    = "0",
2607                 .parent = "read_iolog",
2608                 .hide   = 1,
2609                 .help   = "Playback IO pattern file as fast as possible without stalls",
2610                 .category = FIO_OPT_C_IO,
2611                 .group  = FIO_OPT_G_IOLOG,
2612         },
2613         {
2614                 .name   = "replay_redirect",
2615                 .lname  = "Redirect device for replay",
2616                 .type   = FIO_OPT_STR_STORE,
2617                 .off1   = td_var_offset(replay_redirect),
2618                 .parent = "read_iolog",
2619                 .hide   = 1,
2620                 .help   = "Replay all I/O onto this device, regardless of trace device",
2621                 .category = FIO_OPT_C_IO,
2622                 .group  = FIO_OPT_G_IOLOG,
2623         },
2624         {
2625                 .name   = "exec_prerun",
2626                 .lname  = "Pre-execute runnable",
2627                 .type   = FIO_OPT_STR_STORE,
2628                 .off1   = td_var_offset(exec_prerun),
2629                 .help   = "Execute this file prior to running job",
2630                 .category = FIO_OPT_C_GENERAL,
2631                 .group  = FIO_OPT_G_INVALID,
2632         },
2633         {
2634                 .name   = "exec_postrun",
2635                 .lname  = "Post-execute runnable",
2636                 .type   = FIO_OPT_STR_STORE,
2637                 .off1   = td_var_offset(exec_postrun),
2638                 .help   = "Execute this file after running job",
2639                 .category = FIO_OPT_C_GENERAL,
2640                 .group  = FIO_OPT_G_INVALID,
2641         },
2642 #ifdef FIO_HAVE_IOSCHED_SWITCH
2643         {
2644                 .name   = "ioscheduler",
2645                 .lname  = "I/O scheduler",
2646                 .type   = FIO_OPT_STR_STORE,
2647                 .off1   = td_var_offset(ioscheduler),
2648                 .help   = "Use this IO scheduler on the backing device",
2649                 .category = FIO_OPT_C_FILE,
2650                 .group  = FIO_OPT_G_INVALID,
2651         },
2652 #endif
2653         {
2654                 .name   = "zonesize",
2655                 .lname  = "Zone size",
2656                 .type   = FIO_OPT_STR_VAL,
2657                 .off1   = td_var_offset(zone_size),
2658                 .help   = "Amount of data to read per zone",
2659                 .def    = "0",
2660                 .interval = 1024 * 1024,
2661                 .category = FIO_OPT_C_IO,
2662                 .group  = FIO_OPT_G_ZONE,
2663         },
2664         {
2665                 .name   = "zonerange",
2666                 .lname  = "Zone range",
2667                 .type   = FIO_OPT_STR_VAL,
2668                 .off1   = td_var_offset(zone_range),
2669                 .help   = "Give size of an IO zone",
2670                 .def    = "0",
2671                 .interval = 1024 * 1024,
2672                 .category = FIO_OPT_C_IO,
2673                 .group  = FIO_OPT_G_ZONE,
2674         },
2675         {
2676                 .name   = "zoneskip",
2677                 .lname  = "Zone skip",
2678                 .type   = FIO_OPT_STR_VAL,
2679                 .off1   = td_var_offset(zone_skip),
2680                 .help   = "Space between IO zones",
2681                 .def    = "0",
2682                 .interval = 1024 * 1024,
2683                 .category = FIO_OPT_C_IO,
2684                 .group  = FIO_OPT_G_ZONE,
2685         },
2686         {
2687                 .name   = "lockmem",
2688                 .lname  = "Lock memory",
2689                 .type   = FIO_OPT_STR_VAL,
2690                 .off1   = td_var_offset(lockmem),
2691                 .help   = "Lock down this amount of memory (per worker)",
2692                 .def    = "0",
2693                 .interval = 1024 * 1024,
2694                 .category = FIO_OPT_C_GENERAL,
2695                 .group  = FIO_OPT_G_INVALID,
2696         },
2697         {
2698                 .name   = "rwmixread",
2699                 .lname  = "Read/write mix read",
2700                 .type   = FIO_OPT_INT,
2701                 .cb     = str_rwmix_read_cb,
2702                 .maxval = 100,
2703                 .help   = "Percentage of mixed workload that is reads",
2704                 .def    = "50",
2705                 .interval = 5,
2706                 .inverse = "rwmixwrite",
2707                 .category = FIO_OPT_C_IO,
2708                 .group  = FIO_OPT_G_RWMIX,
2709         },
2710         {
2711                 .name   = "rwmixwrite",
2712                 .lname  = "Read/write mix write",
2713                 .type   = FIO_OPT_INT,
2714                 .cb     = str_rwmix_write_cb,
2715                 .maxval = 100,
2716                 .help   = "Percentage of mixed workload that is writes",
2717                 .def    = "50",
2718                 .interval = 5,
2719                 .inverse = "rwmixread",
2720                 .category = FIO_OPT_C_IO,
2721                 .group  = FIO_OPT_G_RWMIX,
2722         },
2723         {
2724                 .name   = "rwmixcycle",
2725                 .lname  = "Read/write mix cycle",
2726                 .type   = FIO_OPT_DEPRECATED,
2727                 .category = FIO_OPT_C_IO,
2728                 .group  = FIO_OPT_G_RWMIX,
2729         },
2730         {
2731                 .name   = "nice",
2732                 .lname  = "Nice",
2733                 .type   = FIO_OPT_INT,
2734                 .off1   = td_var_offset(nice),
2735                 .help   = "Set job CPU nice value",
2736                 .minval = -19,
2737                 .maxval = 20,
2738                 .def    = "0",
2739                 .interval = 1,
2740                 .category = FIO_OPT_C_GENERAL,
2741                 .group  = FIO_OPT_G_CRED,
2742         },
2743 #ifdef FIO_HAVE_IOPRIO
2744         {
2745                 .name   = "prio",
2746                 .lname  = "I/O nice priority",
2747                 .type   = FIO_OPT_INT,
2748                 .off1   = td_var_offset(ioprio),
2749                 .help   = "Set job IO priority value",
2750                 .minval = 0,
2751                 .maxval = 7,
2752                 .interval = 1,
2753                 .category = FIO_OPT_C_GENERAL,
2754                 .group  = FIO_OPT_G_CRED,
2755         },
2756         {
2757                 .name   = "prioclass",
2758                 .lname  = "I/O nice priority class",
2759                 .type   = FIO_OPT_INT,
2760                 .off1   = td_var_offset(ioprio_class),
2761                 .help   = "Set job IO priority class",
2762                 .minval = 0,
2763                 .maxval = 3,
2764                 .interval = 1,
2765                 .category = FIO_OPT_C_GENERAL,
2766                 .group  = FIO_OPT_G_CRED,
2767         },
2768 #endif
2769         {
2770                 .name   = "thinktime",
2771                 .lname  = "Thinktime",
2772                 .type   = FIO_OPT_INT,
2773                 .off1   = td_var_offset(thinktime),
2774                 .help   = "Idle time between IO buffers (usec)",
2775                 .def    = "0",
2776                 .category = FIO_OPT_C_IO,
2777                 .group  = FIO_OPT_G_THINKTIME,
2778         },
2779         {
2780                 .name   = "thinktime_spin",
2781                 .lname  = "Thinktime spin",
2782                 .type   = FIO_OPT_INT,
2783                 .off1   = td_var_offset(thinktime_spin),
2784                 .help   = "Start think time by spinning this amount (usec)",
2785                 .def    = "0",
2786                 .parent = "thinktime",
2787                 .hide   = 1,
2788                 .category = FIO_OPT_C_IO,
2789                 .group  = FIO_OPT_G_THINKTIME,
2790         },
2791         {
2792                 .name   = "thinktime_blocks",
2793                 .lname  = "Thinktime blocks",
2794                 .type   = FIO_OPT_INT,
2795                 .off1   = td_var_offset(thinktime_blocks),
2796                 .help   = "IO buffer period between 'thinktime'",
2797                 .def    = "1",
2798                 .parent = "thinktime",
2799                 .hide   = 1,
2800                 .category = FIO_OPT_C_IO,
2801                 .group  = FIO_OPT_G_THINKTIME,
2802         },
2803         {
2804                 .name   = "rate",
2805                 .lname  = "I/O rate",
2806                 .type   = FIO_OPT_INT,
2807                 .off1   = td_var_offset(rate[DDIR_READ]),
2808                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2809                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2810                 .help   = "Set bandwidth rate",
2811                 .category = FIO_OPT_C_IO,
2812                 .group  = FIO_OPT_G_RATE,
2813         },
2814         {
2815                 .name   = "ratemin",
2816                 .lname  = "I/O min rate",
2817                 .type   = FIO_OPT_INT,
2818                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2819                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2820                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2821                 .help   = "Job must meet this rate or it will be shutdown",
2822                 .parent = "rate",
2823                 .hide   = 1,
2824                 .category = FIO_OPT_C_IO,
2825                 .group  = FIO_OPT_G_RATE,
2826         },
2827         {
2828                 .name   = "rate_iops",
2829                 .lname  = "I/O rate IOPS",
2830                 .type   = FIO_OPT_INT,
2831                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2832                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2833                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2834                 .help   = "Limit IO used to this number of IO operations/sec",
2835                 .hide   = 1,
2836                 .category = FIO_OPT_C_IO,
2837                 .group  = FIO_OPT_G_RATE,
2838         },
2839         {
2840                 .name   = "rate_iops_min",
2841                 .lname  = "I/O min rate IOPS",
2842                 .type   = FIO_OPT_INT,
2843                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2844                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2845                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2846                 .help   = "Job must meet this rate or it will be shut down",
2847                 .parent = "rate_iops",
2848                 .hide   = 1,
2849                 .category = FIO_OPT_C_IO,
2850                 .group  = FIO_OPT_G_RATE,
2851         },
2852         {
2853                 .name   = "ratecycle",
2854                 .lname  = "I/O rate cycle",
2855                 .type   = FIO_OPT_INT,
2856                 .off1   = td_var_offset(ratecycle),
2857                 .help   = "Window average for rate limits (msec)",
2858                 .def    = "1000",
2859                 .parent = "rate",
2860                 .hide   = 1,
2861                 .category = FIO_OPT_C_IO,
2862                 .group  = FIO_OPT_G_RATE,
2863         },
2864         {
2865                 .name   = "max_latency",
2866                 .type   = FIO_OPT_INT,
2867                 .off1   = td_var_offset(max_latency),
2868                 .help   = "Maximum tolerated IO latency (usec)",
2869                 .category = FIO_OPT_C_IO,
2870                 .group = FIO_OPT_G_LATPROF,
2871         },
2872         {
2873                 .name   = "latency_target",
2874                 .lname  = "Latency Target (usec)",
2875                 .type   = FIO_OPT_STR_VAL_TIME,
2876                 .off1   = td_var_offset(latency_target),
2877                 .help   = "Ramp to max queue depth supporting this latency",
2878                 .category = FIO_OPT_C_IO,
2879                 .group  = FIO_OPT_G_LATPROF,
2880         },
2881         {
2882                 .name   = "latency_window",
2883                 .lname  = "Latency Window (usec)",
2884                 .type   = FIO_OPT_STR_VAL_TIME,
2885                 .off1   = td_var_offset(latency_window),
2886                 .help   = "Time to sustain latency_target",
2887                 .category = FIO_OPT_C_IO,
2888                 .group  = FIO_OPT_G_LATPROF,
2889         },
2890         {
2891                 .name   = "latency_percentile",
2892                 .lname  = "Latency Percentile",
2893                 .type   = FIO_OPT_FLOAT_LIST,
2894                 .off1   = td_var_offset(latency_percentile),
2895                 .help   = "Percentile of IOs must be below latency_target",
2896                 .def    = "100",
2897                 .maxlen = 1,
2898                 .minfp  = 0.0,
2899                 .maxfp  = 100.0,
2900                 .category = FIO_OPT_C_IO,
2901                 .group  = FIO_OPT_G_LATPROF,
2902         },
2903         {
2904                 .name   = "invalidate",
2905                 .lname  = "Cache invalidate",
2906                 .type   = FIO_OPT_BOOL,
2907                 .off1   = td_var_offset(invalidate_cache),
2908                 .help   = "Invalidate buffer/page cache prior to running job",
2909                 .def    = "1",
2910                 .category = FIO_OPT_C_IO,
2911                 .group  = FIO_OPT_G_IO_TYPE,
2912         },
2913         {
2914                 .name   = "sync",
2915                 .lname  = "Synchronous I/O",
2916                 .type   = FIO_OPT_BOOL,
2917                 .off1   = td_var_offset(sync_io),
2918                 .help   = "Use O_SYNC for buffered writes",
2919                 .def    = "0",
2920                 .parent = "buffered",
2921                 .hide   = 1,
2922                 .category = FIO_OPT_C_IO,
2923                 .group  = FIO_OPT_G_IO_TYPE,
2924         },
2925         {
2926                 .name   = "create_serialize",
2927                 .lname  = "Create serialize",
2928                 .type   = FIO_OPT_BOOL,
2929                 .off1   = td_var_offset(create_serialize),
2930                 .help   = "Serialize creating of job files",
2931                 .def    = "1",
2932                 .category = FIO_OPT_C_FILE,
2933                 .group  = FIO_OPT_G_INVALID,
2934         },
2935         {
2936                 .name   = "create_fsync",
2937                 .lname  = "Create fsync",
2938                 .type   = FIO_OPT_BOOL,
2939                 .off1   = td_var_offset(create_fsync),
2940                 .help   = "fsync file after creation",
2941                 .def    = "1",
2942                 .category = FIO_OPT_C_FILE,
2943                 .group  = FIO_OPT_G_INVALID,
2944         },
2945         {
2946                 .name   = "create_on_open",
2947                 .lname  = "Create on open",
2948                 .type   = FIO_OPT_BOOL,
2949                 .off1   = td_var_offset(create_on_open),
2950                 .help   = "Create files when they are opened for IO",
2951                 .def    = "0",
2952                 .category = FIO_OPT_C_FILE,
2953                 .group  = FIO_OPT_G_INVALID,
2954         },
2955         {
2956                 .name   = "create_only",
2957                 .type   = FIO_OPT_BOOL,
2958                 .off1   = td_var_offset(create_only),
2959                 .help   = "Only perform file creation phase",
2960                 .category = FIO_OPT_C_FILE,
2961                 .def    = "0",
2962         },
2963         {
2964                 .name   = "pre_read",
2965                 .lname  = "Pre-read files",
2966                 .type   = FIO_OPT_BOOL,
2967                 .off1   = td_var_offset(pre_read),
2968                 .help   = "Pre-read files before starting official testing",
2969                 .def    = "0",
2970                 .category = FIO_OPT_C_FILE,
2971                 .group  = FIO_OPT_G_INVALID,
2972         },
2973 #ifdef FIO_HAVE_CPU_AFFINITY
2974         {
2975                 .name   = "cpumask",
2976                 .lname  = "CPU mask",
2977                 .type   = FIO_OPT_INT,
2978                 .cb     = str_cpumask_cb,
2979                 .help   = "CPU affinity mask",
2980                 .category = FIO_OPT_C_GENERAL,
2981                 .group  = FIO_OPT_G_CRED,
2982         },
2983         {
2984                 .name   = "cpus_allowed",
2985                 .lname  = "CPUs allowed",
2986                 .type   = FIO_OPT_STR,
2987                 .cb     = str_cpus_allowed_cb,
2988                 .help   = "Set CPUs allowed",
2989                 .category = FIO_OPT_C_GENERAL,
2990                 .group  = FIO_OPT_G_CRED,
2991         },
2992         {
2993                 .name   = "cpus_allowed_policy",
2994                 .lname  = "CPUs allowed distribution policy",
2995                 .type   = FIO_OPT_STR,
2996                 .off1   = td_var_offset(cpus_allowed_policy),
2997                 .help   = "Distribution policy for cpus_allowed",
2998                 .parent = "cpus_allowed",
2999                 .prio   = 1,
3000                 .posval = {
3001                           { .ival = "shared",
3002                             .oval = FIO_CPUS_SHARED,
3003                             .help = "Mask shared between threads",
3004                           },
3005                           { .ival = "split",
3006                             .oval = FIO_CPUS_SPLIT,
3007                             .help = "Mask split between threads",
3008                           },
3009                 },
3010                 .category = FIO_OPT_C_GENERAL,
3011                 .group  = FIO_OPT_G_CRED,
3012         },
3013 #endif
3014 #ifdef CONFIG_LIBNUMA
3015         {
3016                 .name   = "numa_cpu_nodes",
3017                 .type   = FIO_OPT_STR,
3018                 .cb     = str_numa_cpunodes_cb,
3019                 .help   = "NUMA CPU nodes bind",
3020                 .category = FIO_OPT_C_GENERAL,
3021                 .group  = FIO_OPT_G_INVALID,
3022         },
3023         {
3024                 .name   = "numa_mem_policy",
3025                 .type   = FIO_OPT_STR,
3026                 .cb     = str_numa_mpol_cb,
3027                 .help   = "NUMA memory policy setup",
3028                 .category = FIO_OPT_C_GENERAL,
3029                 .group  = FIO_OPT_G_INVALID,
3030         },
3031 #endif
3032         {
3033                 .name   = "end_fsync",
3034                 .lname  = "End fsync",
3035                 .type   = FIO_OPT_BOOL,
3036                 .off1   = td_var_offset(end_fsync),
3037                 .help   = "Include fsync at the end of job",
3038                 .def    = "0",
3039                 .category = FIO_OPT_C_FILE,
3040                 .group  = FIO_OPT_G_INVALID,
3041         },
3042         {
3043                 .name   = "fsync_on_close",
3044                 .lname  = "Fsync on close",
3045                 .type   = FIO_OPT_BOOL,
3046                 .off1   = td_var_offset(fsync_on_close),
3047                 .help   = "fsync files on close",
3048                 .def    = "0",
3049                 .category = FIO_OPT_C_FILE,
3050                 .group  = FIO_OPT_G_INVALID,
3051         },
3052         {
3053                 .name   = "unlink",
3054                 .lname  = "Unlink file",
3055                 .type   = FIO_OPT_BOOL,
3056                 .off1   = td_var_offset(unlink),
3057                 .help   = "Unlink created files after job has completed",
3058                 .def    = "0",
3059                 .category = FIO_OPT_C_FILE,
3060                 .group  = FIO_OPT_G_INVALID,
3061         },
3062         {
3063                 .name   = "exitall",
3064                 .lname  = "Exit-all on terminate",
3065                 .type   = FIO_OPT_STR_SET,
3066                 .cb     = str_exitall_cb,
3067                 .help   = "Terminate all jobs when one exits",
3068                 .category = FIO_OPT_C_GENERAL,
3069                 .group  = FIO_OPT_G_PROCESS,
3070         },
3071         {
3072                 .name   = "stonewall",
3073                 .lname  = "Wait for previous",
3074                 .alias  = "wait_for_previous",
3075                 .type   = FIO_OPT_STR_SET,
3076                 .off1   = td_var_offset(stonewall),
3077                 .help   = "Insert a hard barrier between this job and previous",
3078                 .category = FIO_OPT_C_GENERAL,
3079                 .group  = FIO_OPT_G_PROCESS,
3080         },
3081         {
3082                 .name   = "new_group",
3083                 .lname  = "New group",
3084                 .type   = FIO_OPT_STR_SET,
3085                 .off1   = td_var_offset(new_group),
3086                 .help   = "Mark the start of a new group (for reporting)",
3087                 .category = FIO_OPT_C_GENERAL,
3088                 .group  = FIO_OPT_G_PROCESS,
3089         },
3090         {
3091                 .name   = "thread",
3092                 .lname  = "Thread",
3093                 .type   = FIO_OPT_STR_SET,
3094                 .off1   = td_var_offset(use_thread),
3095                 .help   = "Use threads instead of processes",
3096 #ifdef CONFIG_NO_SHM
3097                 .def    = "1",
3098                 .no_warn_def = 1,
3099 #endif
3100                 .category = FIO_OPT_C_GENERAL,
3101                 .group  = FIO_OPT_G_PROCESS,
3102         },
3103         {
3104                 .name   = "write_bw_log",
3105                 .lname  = "Write bandwidth log",
3106                 .type   = FIO_OPT_STR_STORE,
3107                 .off1   = td_var_offset(bw_log_file),
3108                 .help   = "Write log of bandwidth during run",
3109                 .category = FIO_OPT_C_LOG,
3110                 .group  = FIO_OPT_G_INVALID,
3111         },
3112         {
3113                 .name   = "write_lat_log",
3114                 .lname  = "Write latency log",
3115                 .type   = FIO_OPT_STR_STORE,
3116                 .off1   = td_var_offset(lat_log_file),
3117                 .help   = "Write log of latency during run",
3118                 .category = FIO_OPT_C_LOG,
3119                 .group  = FIO_OPT_G_INVALID,
3120         },
3121         {
3122                 .name   = "write_iops_log",
3123                 .lname  = "Write IOPS log",
3124                 .type   = FIO_OPT_STR_STORE,
3125                 .off1   = td_var_offset(iops_log_file),
3126                 .help   = "Write log of IOPS during run",
3127                 .category = FIO_OPT_C_LOG,
3128                 .group  = FIO_OPT_G_INVALID,
3129         },
3130         {
3131                 .name   = "log_avg_msec",
3132                 .lname  = "Log averaging (msec)",
3133                 .type   = FIO_OPT_INT,
3134                 .off1   = td_var_offset(log_avg_msec),
3135                 .help   = "Average bw/iops/lat logs over this period of time",
3136                 .def    = "0",
3137                 .category = FIO_OPT_C_LOG,
3138                 .group  = FIO_OPT_G_INVALID,
3139         },
3140         {
3141                 .name   = "log_offset",
3142                 .lname  = "Log offset of IO",
3143                 .type   = FIO_OPT_BOOL,
3144                 .off1   = td_var_offset(log_offset),
3145                 .help   = "Include offset of IO for each log entry",
3146                 .def    = "0",
3147                 .category = FIO_OPT_C_LOG,
3148                 .group  = FIO_OPT_G_INVALID,
3149         },
3150 #ifdef CONFIG_ZLIB
3151         {
3152                 .name   = "log_compression",
3153                 .lname  = "Log compression",
3154                 .type   = FIO_OPT_INT,
3155                 .off1   = td_var_offset(log_gz),
3156                 .help   = "Log in compressed chunks of this size",
3157                 .minval = 32 * 1024 * 1024ULL,
3158                 .maxval = 512 * 1024 * 1024ULL,
3159                 .category = FIO_OPT_C_LOG,
3160                 .group  = FIO_OPT_G_INVALID,
3161         },
3162         {
3163                 .name   = "log_store_compressed",
3164                 .lname  = "Log store compressed",
3165                 .type   = FIO_OPT_BOOL,
3166                 .off1   = td_var_offset(log_gz_store),
3167                 .help   = "Store logs in a compressed format",
3168                 .category = FIO_OPT_C_LOG,
3169                 .group  = FIO_OPT_G_INVALID,
3170         },
3171 #endif
3172         {
3173                 .name   = "bwavgtime",
3174                 .lname  = "Bandwidth average time",
3175                 .type   = FIO_OPT_INT,
3176                 .off1   = td_var_offset(bw_avg_time),
3177                 .help   = "Time window over which to calculate bandwidth"
3178                           " (msec)",
3179                 .def    = "500",
3180                 .parent = "write_bw_log",
3181                 .hide   = 1,
3182                 .interval = 100,
3183                 .category = FIO_OPT_C_LOG,
3184                 .group  = FIO_OPT_G_INVALID,
3185         },
3186         {
3187                 .name   = "iopsavgtime",
3188                 .lname  = "IOPS average time",
3189                 .type   = FIO_OPT_INT,
3190                 .off1   = td_var_offset(iops_avg_time),
3191                 .help   = "Time window over which to calculate IOPS (msec)",
3192                 .def    = "500",
3193                 .parent = "write_iops_log",
3194                 .hide   = 1,
3195                 .interval = 100,
3196                 .category = FIO_OPT_C_LOG,
3197                 .group  = FIO_OPT_G_INVALID,
3198         },
3199         {
3200                 .name   = "group_reporting",
3201                 .lname  = "Group reporting",
3202                 .type   = FIO_OPT_STR_SET,
3203                 .off1   = td_var_offset(group_reporting),
3204                 .help   = "Do reporting on a per-group basis",
3205                 .category = FIO_OPT_C_STAT,
3206                 .group  = FIO_OPT_G_INVALID,
3207         },
3208         {
3209                 .name   = "zero_buffers",
3210                 .lname  = "Zero I/O buffers",
3211                 .type   = FIO_OPT_STR_SET,
3212                 .off1   = td_var_offset(zero_buffers),
3213                 .help   = "Init IO buffers to all zeroes",
3214                 .category = FIO_OPT_C_IO,
3215                 .group  = FIO_OPT_G_IO_BUF,
3216         },
3217         {
3218                 .name   = "refill_buffers",
3219                 .lname  = "Refill I/O buffers",
3220                 .type   = FIO_OPT_STR_SET,
3221                 .off1   = td_var_offset(refill_buffers),
3222                 .help   = "Refill IO buffers on every IO submit",
3223                 .category = FIO_OPT_C_IO,
3224                 .group  = FIO_OPT_G_IO_BUF,
3225         },
3226         {
3227                 .name   = "scramble_buffers",
3228                 .lname  = "Scramble I/O buffers",
3229                 .type   = FIO_OPT_BOOL,
3230                 .off1   = td_var_offset(scramble_buffers),
3231                 .help   = "Slightly scramble buffers on every IO submit",
3232                 .def    = "1",
3233                 .category = FIO_OPT_C_IO,
3234                 .group  = FIO_OPT_G_IO_BUF,
3235         },
3236         {
3237                 .name   = "buffer_pattern",
3238                 .lname  = "Buffer pattern",
3239                 .type   = FIO_OPT_STR,
3240                 .cb     = str_buffer_pattern_cb,
3241                 .help   = "Fill pattern for IO buffers",
3242                 .category = FIO_OPT_C_IO,
3243                 .group  = FIO_OPT_G_IO_BUF,
3244         },
3245         {
3246                 .name   = "buffer_compress_percentage",
3247                 .lname  = "Buffer compression percentage",
3248                 .type   = FIO_OPT_INT,
3249                 .cb     = str_buffer_compress_cb,
3250                 .maxval = 100,
3251                 .minval = 0,
3252                 .help   = "How compressible the buffer is (approximately)",
3253                 .interval = 5,
3254                 .category = FIO_OPT_C_IO,
3255                 .group  = FIO_OPT_G_IO_BUF,
3256         },
3257         {
3258                 .name   = "buffer_compress_chunk",
3259                 .lname  = "Buffer compression chunk size",
3260                 .type   = FIO_OPT_INT,
3261                 .off1   = td_var_offset(compress_chunk),
3262                 .parent = "buffer_compress_percentage",
3263                 .hide   = 1,
3264                 .help   = "Size of compressible region in buffer",
3265                 .interval = 256,
3266                 .category = FIO_OPT_C_IO,
3267                 .group  = FIO_OPT_G_IO_BUF,
3268         },
3269         {
3270                 .name   = "dedupe_percentage",
3271                 .lname  = "Dedupe percentage",
3272                 .type   = FIO_OPT_INT,
3273                 .cb     = str_dedupe_cb,
3274                 .maxval = 100,
3275                 .minval = 0,
3276                 .help   = "Percentage of buffers that are dedupable",
3277                 .interval = 1,
3278                 .category = FIO_OPT_C_IO,
3279                 .group  = FIO_OPT_G_IO_BUF,
3280         },
3281         {
3282                 .name   = "clat_percentiles",
3283                 .lname  = "Completion latency percentiles",
3284                 .type   = FIO_OPT_BOOL,
3285                 .off1   = td_var_offset(clat_percentiles),
3286                 .help   = "Enable the reporting of completion latency percentiles",
3287                 .def    = "1",
3288                 .category = FIO_OPT_C_STAT,
3289                 .group  = FIO_OPT_G_INVALID,
3290         },
3291         {
3292                 .name   = "percentile_list",
3293                 .lname  = "Completion latency percentile list",
3294                 .type   = FIO_OPT_FLOAT_LIST,
3295                 .off1   = td_var_offset(percentile_list),
3296                 .off2   = td_var_offset(percentile_precision),
3297                 .help   = "Specify a custom list of percentiles to report",
3298                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3299                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3300                 .minfp  = 0.0,
3301                 .maxfp  = 100.0,
3302                 .category = FIO_OPT_C_STAT,
3303                 .group  = FIO_OPT_G_INVALID,
3304         },
3305
3306 #ifdef FIO_HAVE_DISK_UTIL
3307         {
3308                 .name   = "disk_util",
3309                 .lname  = "Disk utilization",
3310                 .type   = FIO_OPT_BOOL,
3311                 .off1   = td_var_offset(do_disk_util),
3312                 .help   = "Log disk utilization statistics",
3313                 .def    = "1",
3314                 .category = FIO_OPT_C_STAT,
3315                 .group  = FIO_OPT_G_INVALID,
3316         },
3317 #endif
3318         {
3319                 .name   = "gtod_reduce",
3320                 .lname  = "Reduce gettimeofday() calls",
3321                 .type   = FIO_OPT_BOOL,
3322                 .help   = "Greatly reduce number of gettimeofday() calls",
3323                 .cb     = str_gtod_reduce_cb,
3324                 .def    = "0",
3325                 .hide_on_set = 1,
3326                 .category = FIO_OPT_C_STAT,
3327                 .group  = FIO_OPT_G_INVALID,
3328         },
3329         {
3330                 .name   = "disable_lat",
3331                 .lname  = "Disable all latency stats",
3332                 .type   = FIO_OPT_BOOL,
3333                 .off1   = td_var_offset(disable_lat),
3334                 .help   = "Disable latency numbers",
3335                 .parent = "gtod_reduce",
3336                 .hide   = 1,
3337                 .def    = "0",
3338                 .category = FIO_OPT_C_STAT,
3339                 .group  = FIO_OPT_G_INVALID,
3340         },
3341         {
3342                 .name   = "disable_clat",
3343                 .lname  = "Disable completion latency stats",
3344                 .type   = FIO_OPT_BOOL,
3345                 .off1   = td_var_offset(disable_clat),
3346                 .help   = "Disable completion latency numbers",
3347                 .parent = "gtod_reduce",
3348                 .hide   = 1,
3349                 .def    = "0",
3350                 .category = FIO_OPT_C_STAT,
3351                 .group  = FIO_OPT_G_INVALID,
3352         },
3353         {
3354                 .name   = "disable_slat",
3355                 .lname  = "Disable submission latency stats",
3356                 .type   = FIO_OPT_BOOL,
3357                 .off1   = td_var_offset(disable_slat),
3358                 .help   = "Disable submission latency numbers",
3359                 .parent = "gtod_reduce",
3360                 .hide   = 1,
3361                 .def    = "0",
3362                 .category = FIO_OPT_C_STAT,
3363                 .group  = FIO_OPT_G_INVALID,
3364         },
3365         {
3366                 .name   = "disable_bw_measurement",
3367                 .lname  = "Disable bandwidth stats",
3368                 .type   = FIO_OPT_BOOL,
3369                 .off1   = td_var_offset(disable_bw),
3370                 .help   = "Disable bandwidth logging",
3371                 .parent = "gtod_reduce",
3372                 .hide   = 1,
3373                 .def    = "0",
3374                 .category = FIO_OPT_C_STAT,
3375                 .group  = FIO_OPT_G_INVALID,
3376         },
3377         {
3378                 .name   = "gtod_cpu",
3379                 .lname  = "Dedicated gettimeofday() CPU",
3380                 .type   = FIO_OPT_INT,
3381                 .cb     = str_gtod_cpu_cb,
3382                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3383                 .verify = gtod_cpu_verify,
3384                 .category = FIO_OPT_C_GENERAL,
3385                 .group  = FIO_OPT_G_CLOCK,
3386         },
3387         {
3388                 .name   = "unified_rw_reporting",
3389                 .type   = FIO_OPT_BOOL,
3390                 .off1   = td_var_offset(unified_rw_rep),
3391                 .help   = "Unify reporting across data direction",
3392                 .def    = "0",
3393                 .category = FIO_OPT_C_GENERAL,
3394                 .group  = FIO_OPT_G_INVALID,
3395         },
3396         {
3397                 .name   = "continue_on_error",
3398                 .lname  = "Continue on error",
3399                 .type   = FIO_OPT_STR,
3400                 .off1   = td_var_offset(continue_on_error),
3401                 .help   = "Continue on non-fatal errors during IO",
3402                 .def    = "none",
3403                 .category = FIO_OPT_C_GENERAL,
3404                 .group  = FIO_OPT_G_ERR,
3405                 .posval = {
3406                           { .ival = "none",
3407                             .oval = ERROR_TYPE_NONE,
3408                             .help = "Exit when an error is encountered",
3409                           },
3410                           { .ival = "read",
3411                             .oval = ERROR_TYPE_READ,
3412                             .help = "Continue on read errors only",
3413                           },
3414                           { .ival = "write",
3415                             .oval = ERROR_TYPE_WRITE,
3416                             .help = "Continue on write errors only",
3417                           },
3418                           { .ival = "io",
3419                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3420                             .help = "Continue on any IO errors",
3421                           },
3422                           { .ival = "verify",
3423                             .oval = ERROR_TYPE_VERIFY,
3424                             .help = "Continue on verify errors only",
3425                           },
3426                           { .ival = "all",
3427                             .oval = ERROR_TYPE_ANY,
3428                             .help = "Continue on all io and verify errors",
3429                           },
3430                           { .ival = "0",
3431                             .oval = ERROR_TYPE_NONE,
3432                             .help = "Alias for 'none'",
3433                           },
3434                           { .ival = "1",
3435                             .oval = ERROR_TYPE_ANY,
3436                             .help = "Alias for 'all'",
3437                           },
3438                 },
3439         },
3440         {
3441                 .name   = "ignore_error",
3442                 .type   = FIO_OPT_STR,
3443                 .cb     = str_ignore_error_cb,
3444                 .help   = "Set a specific list of errors to ignore",
3445                 .parent = "rw",
3446                 .category = FIO_OPT_C_GENERAL,
3447                 .group  = FIO_OPT_G_ERR,
3448         },
3449         {
3450                 .name   = "error_dump",
3451                 .type   = FIO_OPT_BOOL,
3452                 .off1   = td_var_offset(error_dump),
3453                 .def    = "0",
3454                 .help   = "Dump info on each error",
3455                 .category = FIO_OPT_C_GENERAL,
3456                 .group  = FIO_OPT_G_ERR,
3457         },
3458         {
3459                 .name   = "profile",
3460                 .lname  = "Profile",
3461                 .type   = FIO_OPT_STR_STORE,
3462                 .off1   = td_var_offset(profile),
3463                 .help   = "Select a specific builtin performance test",
3464                 .category = FIO_OPT_C_PROFILE,
3465                 .group  = FIO_OPT_G_INVALID,
3466         },
3467         {
3468                 .name   = "cgroup",
3469                 .lname  = "Cgroup",
3470                 .type   = FIO_OPT_STR_STORE,
3471                 .off1   = td_var_offset(cgroup),
3472                 .help   = "Add job to cgroup of this name",
3473                 .category = FIO_OPT_C_GENERAL,
3474                 .group  = FIO_OPT_G_CGROUP,
3475         },
3476         {
3477                 .name   = "cgroup_nodelete",
3478                 .lname  = "Cgroup no-delete",
3479                 .type   = FIO_OPT_BOOL,
3480                 .off1   = td_var_offset(cgroup_nodelete),
3481                 .help   = "Do not delete cgroups after job completion",
3482                 .def    = "0",
3483                 .parent = "cgroup",
3484                 .category = FIO_OPT_C_GENERAL,
3485                 .group  = FIO_OPT_G_CGROUP,
3486         },
3487         {
3488                 .name   = "cgroup_weight",
3489                 .lname  = "Cgroup weight",
3490                 .type   = FIO_OPT_INT,
3491                 .off1   = td_var_offset(cgroup_weight),
3492                 .help   = "Use given weight for cgroup",
3493                 .minval = 100,
3494                 .maxval = 1000,
3495                 .parent = "cgroup",
3496                 .category = FIO_OPT_C_GENERAL,
3497                 .group  = FIO_OPT_G_CGROUP,
3498         },
3499         {
3500                 .name   = "uid",
3501                 .lname  = "User ID",
3502                 .type   = FIO_OPT_INT,
3503                 .off1   = td_var_offset(uid),
3504                 .help   = "Run job with this user ID",
3505                 .category = FIO_OPT_C_GENERAL,
3506                 .group  = FIO_OPT_G_CRED,
3507         },
3508         {
3509                 .name   = "gid",
3510                 .lname  = "Group ID",
3511                 .type   = FIO_OPT_INT,
3512                 .off1   = td_var_offset(gid),
3513                 .help   = "Run job with this group ID",
3514                 .category = FIO_OPT_C_GENERAL,
3515                 .group  = FIO_OPT_G_CRED,
3516         },
3517         {
3518                 .name   = "kb_base",
3519                 .lname  = "KB Base",
3520                 .type   = FIO_OPT_INT,
3521                 .off1   = td_var_offset(kb_base),
3522                 .prio   = 1,
3523                 .def    = "1024",
3524                 .posval = {
3525                           { .ival = "1024",
3526                             .oval = 1024,
3527                             .help = "Use 1024 as the K base",
3528                           },
3529                           { .ival = "1000",
3530                             .oval = 1000,
3531                             .help = "Use 1000 as the K base",
3532                           },
3533                 },
3534                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3535                 .category = FIO_OPT_C_GENERAL,
3536                 .group  = FIO_OPT_G_INVALID,
3537         },
3538         {
3539                 .name   = "unit_base",
3540                 .lname  = "Base unit for reporting (Bits or Bytes)",
3541                 .type   = FIO_OPT_INT,
3542                 .off1   = td_var_offset(unit_base),
3543                 .prio   = 1,
3544                 .posval = {
3545                           { .ival = "0",
3546                             .oval = 0,
3547                             .help = "Auto-detect",
3548                           },
3549                           { .ival = "8",
3550                             .oval = 8,
3551                             .help = "Normal (byte based)",
3552                           },
3553                           { .ival = "1",
3554                             .oval = 1,
3555                             .help = "Bit based",
3556                           },
3557                 },
3558                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3559                 .category = FIO_OPT_C_GENERAL,
3560                 .group  = FIO_OPT_G_INVALID,
3561         },
3562         {
3563                 .name   = "hugepage-size",
3564                 .lname  = "Hugepage size",
3565                 .type   = FIO_OPT_INT,
3566                 .off1   = td_var_offset(hugepage_size),
3567                 .help   = "When using hugepages, specify size of each page",
3568                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3569                 .interval = 1024 * 1024,
3570                 .category = FIO_OPT_C_GENERAL,
3571                 .group  = FIO_OPT_G_INVALID,
3572         },
3573         {
3574                 .name   = "flow_id",
3575                 .lname  = "I/O flow ID",
3576                 .type   = FIO_OPT_INT,
3577                 .off1   = td_var_offset(flow_id),
3578                 .help   = "The flow index ID to use",
3579                 .def    = "0",
3580                 .category = FIO_OPT_C_IO,
3581                 .group  = FIO_OPT_G_IO_FLOW,
3582         },
3583         {
3584                 .name   = "flow",
3585                 .lname  = "I/O flow weight",
3586                 .type   = FIO_OPT_INT,
3587                 .off1   = td_var_offset(flow),
3588                 .help   = "Weight for flow control of this job",
3589                 .parent = "flow_id",
3590                 .hide   = 1,
3591                 .def    = "0",
3592                 .category = FIO_OPT_C_IO,
3593                 .group  = FIO_OPT_G_IO_FLOW,
3594         },
3595         {
3596                 .name   = "flow_watermark",
3597                 .lname  = "I/O flow watermark",
3598                 .type   = FIO_OPT_INT,
3599                 .off1   = td_var_offset(flow_watermark),
3600                 .help   = "High watermark for flow control. This option"
3601                         " should be set to the same value for all threads"
3602                         " with non-zero flow.",
3603                 .parent = "flow_id",
3604                 .hide   = 1,
3605                 .def    = "1024",
3606                 .category = FIO_OPT_C_IO,
3607                 .group  = FIO_OPT_G_IO_FLOW,
3608         },
3609         {
3610                 .name   = "flow_sleep",
3611                 .lname  = "I/O flow sleep",
3612                 .type   = FIO_OPT_INT,
3613                 .off1   = td_var_offset(flow_sleep),
3614                 .help   = "How many microseconds to sleep after being held"
3615                         " back by the flow control mechanism",
3616                 .parent = "flow_id",
3617                 .hide   = 1,
3618                 .def    = "0",
3619                 .category = FIO_OPT_C_IO,
3620                 .group  = FIO_OPT_G_IO_FLOW,
3621         },
3622         {
3623                 .name = NULL,
3624         },
3625 };
3626
3627 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3628                         const char *name, int val)
3629 {
3630         lopt->name = (char *) name;
3631         lopt->val = val;
3632         if (o->type == FIO_OPT_STR_SET)
3633                 lopt->has_arg = optional_argument;
3634         else
3635                 lopt->has_arg = required_argument;
3636 }
3637
3638 static void options_to_lopts(struct fio_option *opts,
3639                               struct option *long_options,
3640                               int i, int option_type)
3641 {
3642         struct fio_option *o = &opts[0];
3643         while (o->name) {
3644                 add_to_lopt(&long_options[i], o, o->name, option_type);
3645                 if (o->alias) {
3646                         i++;
3647                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3648                 }
3649
3650                 i++;
3651                 o++;
3652                 assert(i < FIO_NR_OPTIONS);
3653         }
3654 }
3655
3656 void fio_options_set_ioengine_opts(struct option *long_options,
3657                                    struct thread_data *td)
3658 {
3659         unsigned int i;
3660
3661         i = 0;
3662         while (long_options[i].name) {
3663                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3664                         memset(&long_options[i], 0, sizeof(*long_options));
3665                         break;
3666                 }
3667                 i++;
3668         }
3669
3670         /*
3671          * Just clear out the prior ioengine options.
3672          */
3673         if (!td || !td->eo)
3674                 return;
3675
3676         options_to_lopts(td->io_ops->options, long_options, i,
3677                          FIO_GETOPT_IOENGINE);
3678 }
3679
3680 void fio_options_dup_and_init(struct option *long_options)
3681 {
3682         unsigned int i;
3683
3684         options_init(fio_options);
3685
3686         i = 0;
3687         while (long_options[i].name)
3688                 i++;
3689
3690         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3691 }
3692
3693 struct fio_keyword {
3694         const char *word;
3695         const char *desc;
3696         char *replace;
3697 };
3698
3699 static struct fio_keyword fio_keywords[] = {
3700         {
3701                 .word   = "$pagesize",
3702                 .desc   = "Page size in the system",
3703         },
3704         {
3705                 .word   = "$mb_memory",
3706                 .desc   = "Megabytes of memory online",
3707         },
3708         {
3709                 .word   = "$ncpus",
3710                 .desc   = "Number of CPUs online in the system",
3711         },
3712         {
3713                 .word   = NULL,
3714         },
3715 };
3716
3717 void fio_keywords_init(void)
3718 {
3719         unsigned long long mb_memory;
3720         char buf[128];
3721         long l;
3722
3723         sprintf(buf, "%lu", (unsigned long) page_size);
3724         fio_keywords[0].replace = strdup(buf);
3725
3726         mb_memory = os_phys_mem() / (1024 * 1024);
3727         sprintf(buf, "%llu", mb_memory);
3728         fio_keywords[1].replace = strdup(buf);
3729
3730         l = cpus_online();
3731         sprintf(buf, "%lu", l);
3732         fio_keywords[2].replace = strdup(buf);
3733 }
3734
3735 #define BC_APP          "bc"
3736
3737 static char *bc_calc(char *str)
3738 {
3739         char buf[128], *tmp;
3740         FILE *f;
3741         int ret;
3742
3743         /*
3744          * No math, just return string
3745          */
3746         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3747              !strchr(str, '/')) || strchr(str, '\''))
3748                 return str;
3749
3750         /*
3751          * Split option from value, we only need to calculate the value
3752          */
3753         tmp = strchr(str, '=');
3754         if (!tmp)
3755                 return str;
3756
3757         tmp++;
3758
3759         /*
3760          * Prevent buffer overflows; such a case isn't reasonable anyway
3761          */
3762         if (strlen(str) >= 128 || strlen(tmp) > 100)
3763                 return str;
3764
3765         sprintf(buf, "which %s > /dev/null", BC_APP);
3766         if (system(buf)) {
3767                 log_err("fio: bc is needed for performing math\n");
3768                 return NULL;
3769         }
3770
3771         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
3772         f = popen(buf, "r");
3773         if (!f)
3774                 return NULL;
3775
3776         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
3777         if (ret <= 0) {
3778                 pclose(f);
3779                 return NULL;
3780         }
3781
3782         pclose(f);
3783         buf[(tmp - str) + ret - 1] = '\0';
3784         memcpy(buf, str, tmp - str);
3785         free(str);
3786         return strdup(buf);
3787 }
3788
3789 /*
3790  * Return a copy of the input string with substrings of the form ${VARNAME}
3791  * substituted with the value of the environment variable VARNAME.  The
3792  * substitution always occurs, even if VARNAME is empty or the corresponding
3793  * environment variable undefined.
3794  */
3795 static char *option_dup_subs(const char *opt)
3796 {
3797         char out[OPT_LEN_MAX+1];
3798         char in[OPT_LEN_MAX+1];
3799         char *outptr = out;
3800         char *inptr = in;
3801         char *ch1, *ch2, *env;
3802         ssize_t nchr = OPT_LEN_MAX;
3803         size_t envlen;
3804
3805         if (strlen(opt) + 1 > OPT_LEN_MAX) {
3806                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
3807                 return NULL;
3808         }
3809
3810         in[OPT_LEN_MAX] = '\0';
3811         strncpy(in, opt, OPT_LEN_MAX);
3812
3813         while (*inptr && nchr > 0) {
3814                 if (inptr[0] == '$' && inptr[1] == '{') {
3815                         ch2 = strchr(inptr, '}');
3816                         if (ch2 && inptr+1 < ch2) {
3817                                 ch1 = inptr+2;
3818                                 inptr = ch2+1;
3819                                 *ch2 = '\0';
3820
3821                                 env = getenv(ch1);
3822                                 if (env) {
3823                                         envlen = strlen(env);
3824                                         if (envlen <= nchr) {
3825                                                 memcpy(outptr, env, envlen);
3826                                                 outptr += envlen;
3827                                                 nchr -= envlen;
3828                                         }
3829                                 }
3830
3831                                 continue;
3832                         }
3833                 }
3834
3835                 *outptr++ = *inptr++;
3836                 --nchr;
3837         }
3838
3839         *outptr = '\0';
3840         return strdup(out);
3841 }
3842
3843 /*
3844  * Look for reserved variable names and replace them with real values
3845  */
3846 static char *fio_keyword_replace(char *opt)
3847 {
3848         char *s;
3849         int i;
3850         int docalc = 0;
3851
3852         for (i = 0; fio_keywords[i].word != NULL; i++) {
3853                 struct fio_keyword *kw = &fio_keywords[i];
3854
3855                 while ((s = strstr(opt, kw->word)) != NULL) {
3856                         char *new = malloc(strlen(opt) + 1);
3857                         char *o_org = opt;
3858                         int olen = s - opt;
3859                         int len;
3860
3861                         /*
3862                          * Copy part of the string before the keyword and
3863                          * sprintf() the replacement after it.
3864                          */
3865                         memcpy(new, opt, olen);
3866                         len = sprintf(new + olen, "%s", kw->replace);
3867
3868                         /*
3869                          * If there's more in the original string, copy that
3870                          * in too
3871                          */
3872                         opt += strlen(kw->word) + olen;
3873                         if (strlen(opt))
3874                                 memcpy(new + olen + len, opt, opt - o_org - 1);
3875
3876                         /*
3877                          * replace opt and free the old opt
3878                          */
3879                         opt = new;
3880                         free(o_org);
3881
3882                         docalc = 1;
3883                 }
3884         }
3885
3886         /*
3887          * Check for potential math and invoke bc, if possible
3888          */
3889         if (docalc)
3890                 opt = bc_calc(opt);
3891
3892         return opt;
3893 }
3894
3895 static char **dup_and_sub_options(char **opts, int num_opts)
3896 {
3897         int i;
3898         char **opts_copy = malloc(num_opts * sizeof(*opts));
3899         for (i = 0; i < num_opts; i++) {
3900                 opts_copy[i] = option_dup_subs(opts[i]);
3901                 if (!opts_copy[i])
3902                         continue;
3903                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
3904         }
3905         return opts_copy;
3906 }
3907
3908 int fio_options_parse(struct thread_data *td, char **opts, int num_opts,
3909                         int dump_cmdline)
3910 {
3911         int i, ret, unknown;
3912         char **opts_copy;
3913
3914         sort_options(opts, fio_options, num_opts);
3915         opts_copy = dup_and_sub_options(opts, num_opts);
3916
3917         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
3918                 struct fio_option *o;
3919                 int newret = parse_option(opts_copy[i], opts[i], fio_options,
3920                                                 &o, td, dump_cmdline);
3921
3922                 if (opts_copy[i]) {
3923                         if (newret && !o) {
3924                                 unknown++;
3925                                 continue;
3926                         }
3927                         free(opts_copy[i]);
3928                         opts_copy[i] = NULL;
3929                 }
3930
3931                 ret |= newret;
3932         }
3933
3934         if (unknown) {
3935                 ret |= ioengine_load(td);
3936                 if (td->eo) {
3937                         sort_options(opts_copy, td->io_ops->options, num_opts);
3938                         opts = opts_copy;
3939                 }
3940                 for (i = 0; i < num_opts; i++) {
3941                         struct fio_option *o = NULL;
3942                         int newret = 1;
3943                         if (!opts_copy[i])
3944                                 continue;
3945
3946                         if (td->eo)
3947                                 newret = parse_option(opts_copy[i], opts[i],
3948                                                       td->io_ops->options, &o,
3949                                                       td->eo, dump_cmdline);
3950
3951                         ret |= newret;
3952                         if (!o)
3953                                 log_err("Bad option <%s>\n", opts[i]);
3954
3955                         free(opts_copy[i]);
3956                         opts_copy[i] = NULL;
3957                 }
3958         }
3959
3960         free(opts_copy);
3961         return ret;
3962 }
3963
3964 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
3965 {
3966         return parse_cmd_option(opt, val, fio_options, td);
3967 }
3968
3969 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
3970                                 char *val)
3971 {
3972         return parse_cmd_option(opt, val, td->io_ops->options, td->eo);
3973 }
3974
3975 void fio_fill_default_options(struct thread_data *td)
3976 {
3977         td->o.magic = OPT_MAGIC;
3978         fill_default_options(td, fio_options);
3979 }
3980
3981 int fio_show_option_help(const char *opt)
3982 {
3983         return show_cmd_help(fio_options, opt);
3984 }
3985
3986 void options_mem_dupe(void *data, struct fio_option *options)
3987 {
3988         struct fio_option *o;
3989         char **ptr;
3990
3991         for (o = &options[0]; o->name; o++) {
3992                 if (o->type != FIO_OPT_STR_STORE)
3993                         continue;
3994
3995                 ptr = td_var(data, o, o->off1);
3996                 if (*ptr)
3997                         *ptr = strdup(*ptr);
3998         }
3999 }
4000
4001 /*
4002  * dupe FIO_OPT_STR_STORE options
4003  */
4004 void fio_options_mem_dupe(struct thread_data *td)
4005 {
4006         options_mem_dupe(&td->o, fio_options);
4007
4008         if (td->eo && td->io_ops) {
4009                 void *oldeo = td->eo;
4010
4011                 td->eo = malloc(td->io_ops->option_struct_size);
4012                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
4013                 options_mem_dupe(td->eo, td->io_ops->options);
4014         }
4015 }
4016
4017 unsigned int fio_get_kb_base(void *data)
4018 {
4019         struct thread_options *o = data;
4020         unsigned int kb_base = 0;
4021
4022         /*
4023          * This is a hack... For private options, *data is not holding
4024          * a pointer to the thread_options, but to private data. This means
4025          * we can't safely dereference it, but magic is first so mem wise
4026          * it is valid. But this also means that if the job first sets
4027          * kb_base and expects that to be honored by private options,
4028          * it will be disappointed. We will return the global default
4029          * for this.
4030          */
4031         if (o && o->magic == OPT_MAGIC)
4032                 kb_base = o->kb_base;
4033         if (!kb_base)
4034                 kb_base = 1024;
4035
4036         return kb_base;
4037 }
4038
4039 int add_option(struct fio_option *o)
4040 {
4041         struct fio_option *__o;
4042         int opt_index = 0;
4043
4044         __o = fio_options;
4045         while (__o->name) {
4046                 opt_index++;
4047                 __o++;
4048         }
4049
4050         if (opt_index + 1 == FIO_MAX_OPTS) {
4051                 log_err("fio: FIO_MAX_OPTS is too small\n");
4052                 return 1;
4053         }
4054
4055         memcpy(&fio_options[opt_index], o, sizeof(*o));
4056         fio_options[opt_index + 1].name = NULL;
4057         return 0;
4058 }
4059
4060 void invalidate_profile_options(const char *prof_name)
4061 {
4062         struct fio_option *o;
4063
4064         o = fio_options;
4065         while (o->name) {
4066                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
4067                         o->type = FIO_OPT_INVALID;
4068                         o->prof_name = NULL;
4069                 }
4070                 o++;
4071         }
4072 }
4073
4074 void add_opt_posval(const char *optname, const char *ival, const char *help)
4075 {
4076         struct fio_option *o;
4077         unsigned int i;
4078
4079         o = find_option(fio_options, optname);
4080         if (!o)
4081                 return;
4082
4083         for (i = 0; i < PARSE_MAX_VP; i++) {
4084                 if (o->posval[i].ival)
4085                         continue;
4086
4087                 o->posval[i].ival = ival;
4088                 o->posval[i].help = help;
4089                 break;
4090         }
4091 }
4092
4093 void del_opt_posval(const char *optname, const char *ival)
4094 {
4095         struct fio_option *o;
4096         unsigned int i;
4097
4098         o = find_option(fio_options, optname);
4099         if (!o)
4100                 return;
4101
4102         for (i = 0; i < PARSE_MAX_VP; i++) {
4103                 if (!o->posval[i].ival)
4104                         continue;
4105                 if (strcmp(o->posval[i].ival, ival))
4106                         continue;
4107
4108                 o->posval[i].ival = NULL;
4109                 o->posval[i].help = NULL;
4110         }
4111 }
4112
4113 void fio_options_free(struct thread_data *td)
4114 {
4115         options_free(fio_options, td);
4116         if (td->eo && td->io_ops && td->io_ops->options) {
4117                 options_free(td->io_ops->options, td->eo);
4118                 free(td->eo);
4119                 td->eo = NULL;
4120         }
4121 }
4122
4123 struct fio_option *fio_option_find(const char *name)
4124 {
4125         return find_option(fio_options, name);
4126 }
4127