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 #include <netinet/in.h>
  12
  13 #include "fio.h"
  14 #include "verify.h"
  15 #include "parse.h"
  16 #include "lib/fls.h"
  17 #include "lib/pattern.h"
  18 #include "options.h"
  19
  20 #include "crc/crc32c.h"
  21
  22 char client_sockaddr_str[INET6_ADDRSTRLEN] = { 0 };
  23
  24 struct pattern_fmt_desc fmt_desc[] = {
  25         {
  26                 .fmt   = "%o",
  27                 .len   = FIELD_SIZE(struct io_u *, offset),
  28                 .paste = paste_blockoff
  29         }
  30 };
  31
  32 /*
  33  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  34  */
  35 static char *get_opt_postfix(const char *str)
  36 {
  37         char *p = strstr(str, ":");
  38
  39         if (!p)
  40                 return NULL;
  41
  42         p++;
  43         strip_blank_front(&p);
  44         strip_blank_end(p);
  45         return strdup(p);
  46 }
  47
  48 static int bs_cmp(const void *p1, const void *p2)
  49 {
  50         const struct bssplit *bsp1 = p1;
  51         const struct bssplit *bsp2 = p2;
  52
  53         return bsp1->perc < bsp2->perc;
  54 }
  55
  56 static int bssplit_ddir(struct thread_options *o, int ddir, char *str)
  57 {
  58         struct bssplit *bssplit;
  59         unsigned int i, perc, perc_missing;
  60         unsigned int max_bs, min_bs;
  61         long long val;
  62         char *fname;
  63
  64         o->bssplit_nr[ddir] = 4;
  65         bssplit = malloc(4 * sizeof(struct bssplit));
  66
  67         i = 0;
  68         max_bs = 0;
  69         min_bs = -1;
  70         while ((fname = strsep(&str, ":")) != NULL) {
  71                 char *perc_str;
  72
  73                 if (!strlen(fname))
  74                         break;
  75
  76                 /*
  77                  * grow struct buffer, if needed
  78                  */
  79                 if (i == o->bssplit_nr[ddir]) {
  80                         o->bssplit_nr[ddir] <<= 1;
  81                         bssplit = realloc(bssplit, o->bssplit_nr[ddir]
  82                                                   * sizeof(struct bssplit));
  83                 }
  84
  85                 perc_str = strstr(fname, "/");
  86                 if (perc_str) {
  87                         *perc_str = '\0';
  88                         perc_str++;
  89                         perc = atoi(perc_str);
  90                         if (perc > 100)
  91                                 perc = 100;
  92                         else if (!perc)
  93                                 perc = -1U;
  94                 } else
  95                         perc = -1U;
  96
  97                 if (str_to_decimal(fname, &val, 1, o, 0, 0)) {
  98                         log_err("fio: bssplit conversion failed\n");
  99                         free(bssplit);
 100                         return 1;
 101                 }
 102
 103                 if (val > max_bs)
 104                         max_bs = val;
 105                 if (val < min_bs)
 106                         min_bs = val;
 107
 108                 bssplit[i].bs = val;
 109                 bssplit[i].perc = perc;
 110                 i++;
 111         }
 112
 113         o->bssplit_nr[ddir] = i;
 114
 115         /*
 116          * Now check if the percentages add up, and how much is missing
 117          */
 118         perc = perc_missing = 0;
 119         for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 120                 struct bssplit *bsp = &bssplit[i];
 121
 122                 if (bsp->perc == -1U)
 123                         perc_missing++;
 124                 else
 125                         perc += bsp->perc;
 126         }
 127
 128         if (perc > 100 && perc_missing > 1) {
 129                 log_err("fio: bssplit percentages add to more than 100%%\n");
 130                 free(bssplit);
 131                 return 1;
 132         }
 133
 134         /*
 135          * If values didn't have a percentage set, divide the remains between
 136          * them.
 137          */
 138         if (perc_missing) {
 139                 if (perc_missing == 1 && o->bssplit_nr[ddir] == 1)
 140                         perc = 100;
 141                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 142                         struct bssplit *bsp = &bssplit[i];
 143
 144                         if (bsp->perc == -1U)
 145                                 bsp->perc = (100 - perc) / perc_missing;
 146                 }
 147         }
 148
 149         o->min_bs[ddir] = min_bs;
 150         o->max_bs[ddir] = max_bs;
 151
 152         /*
 153          * now sort based on percentages, for ease of lookup
 154          */
 155         qsort(bssplit, o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 156         o->bssplit[ddir] = bssplit;
 157         return 0;
 158 }
 159
 160 static int str_bssplit_cb(void *data, const char *input)
 161 {
 162         struct thread_data *td = data;
 163         char *str, *p, *odir, *ddir;
 164         int ret = 0;
 165
 166         if (parse_dryrun())
 167                 return 0;
 168
 169         p = str = strdup(input);
 170
 171         strip_blank_front(&str);
 172         strip_blank_end(str);
 173
 174         odir = strchr(str, ',');
 175         if (odir) {
 176                 ddir = strchr(odir + 1, ',');
 177                 if (ddir) {
 178                         ret = bssplit_ddir(&td->o, DDIR_TRIM, ddir + 1);
 179                         if (!ret)
 180                                 *ddir = '\0';
 181                 } else {
 182                         char *op;
 183
 184                         op = strdup(odir + 1);
 185                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 186
 187                         free(op);
 188                 }
 189                 if (!ret)
 190                         ret = bssplit_ddir(&td->o, DDIR_WRITE, odir + 1);
 191                 if (!ret) {
 192                         *odir = '\0';
 193                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
 194                 }
 195         } else {
 196                 char *op;
 197
 198                 op = strdup(str);
 199                 ret = bssplit_ddir(&td->o, DDIR_WRITE, op);
 200                 free(op);
 201
 202                 if (!ret) {
 203                         op = strdup(str);
 204                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 205                         free(op);
 206                 }
 207                 ret = bssplit_ddir(&td->o, DDIR_READ, str);
 208         }
 209
 210         free(p);
 211         return ret;
 212 }
 213
 214 static int str2error(char *str)
 215 {
 216         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 217                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 218                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 219                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 220                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 221                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 222                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 223                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
 224         int i = 0, num = sizeof(err) / sizeof(void *);
 225
 226         while (i < num) {
 227                 if (!strcmp(err[i], str))
 228                         return i + 1;
 229                 i++;
 230         }
 231         return 0;
 232 }
 233
 234 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 235 {
 236         unsigned int i;
 237         int *error;
 238         char *fname;
 239
 240         if (etype >= ERROR_TYPE_CNT) {
 241                 log_err("Illegal error type\n");
 242                 return 1;
 243         }
 244
 245         td->o.ignore_error_nr[etype] = 4;
 246         error = malloc(4 * sizeof(struct bssplit));
 247
 248         i = 0;
 249         while ((fname = strsep(&str, ":")) != NULL) {
 250
 251                 if (!strlen(fname))
 252                         break;
 253
 254                 /*
 255                  * grow struct buffer, if needed
 256                  */
 257                 if (i == td->o.ignore_error_nr[etype]) {
 258                         td->o.ignore_error_nr[etype] <<= 1;
 259                         error = realloc(error, td->o.ignore_error_nr[etype]
 260                                                   * sizeof(int));
 261                 }
 262                 if (fname[0] == 'E') {
 263                         error[i] = str2error(fname);
 264                 } else {
 265                         error[i] = atoi(fname);
 266                         if (error[i] < 0)
 267                                 error[i] = -error[i];
 268                 }
 269                 if (!error[i]) {
 270                         log_err("Unknown error %s, please use number value \n",
 271                                   fname);
 272                         free(error);
 273                         return 1;
 274                 }
 275                 i++;
 276         }
 277         if (i) {
 278                 td->o.continue_on_error |= 1 << etype;
 279                 td->o.ignore_error_nr[etype] = i;
 280                 td->o.ignore_error[etype] = error;
 281         } else
 282                 free(error);
 283
 284         return 0;
 285
 286 }
 287
 288 static int str_ignore_error_cb(void *data, const char *input)
 289 {
 290         struct thread_data *td = data;
 291         char *str, *p, *n;
 292         int type = 0, ret = 1;
 293
 294         if (parse_dryrun())
 295                 return 0;
 296
 297         p = str = strdup(input);
 298
 299         strip_blank_front(&str);
 300         strip_blank_end(str);
 301
 302         while (p) {
 303                 n = strchr(p, ',');
 304                 if (n)
 305                         *n++ = '\0';
 306                 ret = ignore_error_type(td, type, p);
 307                 if (ret)
 308                         break;
 309                 p = n;
 310                 type++;
 311         }
 312         free(str);
 313         return ret;
 314 }
 315
 316 static int str_rw_cb(void *data, const char *str)
 317 {
 318         struct thread_data *td = data;
 319         struct thread_options *o = &td->o;
 320         char *nr;
 321
 322         if (parse_dryrun())
 323                 return 0;
 324
 325         o->ddir_seq_nr = 1;
 326         o->ddir_seq_add = 0;
 327
 328         nr = get_opt_postfix(str);
 329         if (!nr)
 330                 return 0;
 331
 332         if (td_random(td))
 333                 o->ddir_seq_nr = atoi(nr);
 334         else {
 335                 long long val;
 336
 337                 if (str_to_decimal(nr, &val, 1, o, 0, 0)) {
 338                         log_err("fio: rw postfix parsing failed\n");
 339                         free(nr);
 340                         return 1;
 341                 }
 342
 343                 o->ddir_seq_add = val;
 344         }
 345
 346         free(nr);
 347         return 0;
 348 }
 349
 350 static int str_mem_cb(void *data, const char *mem)
 351 {
 352         struct thread_data *td = data;
 353
 354         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP)
 355                 td->o.mmapfile = get_opt_postfix(mem);
 356
 357         return 0;
 358 }
 359
 360 static int fio_clock_source_cb(void *data, const char *str)
 361 {
 362         struct thread_data *td = data;
 363
 364         fio_clock_source = td->o.clocksource;
 365         fio_clock_source_set = 1;
 366         fio_clock_init();
 367         return 0;
 368 }
 369
 370 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 371 {
 372         struct thread_data *td = data;
 373
 374         td->o.rwmix[DDIR_READ] = *val;
 375         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 376         return 0;
 377 }
 378
 379 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 380 {
 381         struct thread_data *td = data;
 382
 383         td->o.rwmix[DDIR_WRITE] = *val;
 384         td->o.rwmix[DDIR_READ] = 100 - *val;
 385         return 0;
 386 }
 387
 388 static int str_exitall_cb(void)
 389 {
 390         exitall_on_terminate = 1;
 391         return 0;
 392 }
 393
 394 #ifdef FIO_HAVE_CPU_AFFINITY
 395 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
 396 {
 397         unsigned int i, index, cpus_in_mask;
 398         const long max_cpu = cpus_online();
 399
 400         cpus_in_mask = fio_cpu_count(mask);
 401         cpu_index = cpu_index % cpus_in_mask;
 402
 403         index = 0;
 404         for (i = 0; i < max_cpu; i++) {
 405                 if (!fio_cpu_isset(mask, i))
 406                         continue;
 407
 408                 if (cpu_index != index)
 409                         fio_cpu_clear(mask, i);
 410
 411                 index++;
 412         }
 413
 414         return fio_cpu_count(mask);
 415 }
 416
 417 static int str_cpumask_cb(void *data, unsigned long long *val)
 418 {
 419         struct thread_data *td = data;
 420         unsigned int i;
 421         long max_cpu;
 422         int ret;
 423
 424         if (parse_dryrun())
 425                 return 0;
 426
 427         ret = fio_cpuset_init(&td->o.cpumask);
 428         if (ret < 0) {
 429                 log_err("fio: cpuset_init failed\n");
 430                 td_verror(td, ret, "fio_cpuset_init");
 431                 return 1;
 432         }
 433
 434         max_cpu = cpus_online();
 435
 436         for (i = 0; i < sizeof(int) * 8; i++) {
 437                 if ((1 << i) & *val) {
 438                         if (i >= max_cpu) {
 439                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 440                                                                 max_cpu - 1);
 441                                 return 1;
 442                         }
 443                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 444                         fio_cpu_set(&td->o.cpumask, i);
 445                 }
 446         }
 447
 448         return 0;
 449 }
 450
 451 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 452                             const char *input)
 453 {
 454         char *cpu, *str, *p;
 455         long max_cpu;
 456         int ret = 0;
 457
 458         ret = fio_cpuset_init(mask);
 459         if (ret < 0) {
 460                 log_err("fio: cpuset_init failed\n");
 461                 td_verror(td, ret, "fio_cpuset_init");
 462                 return 1;
 463         }
 464
 465         p = str = strdup(input);
 466
 467         strip_blank_front(&str);
 468         strip_blank_end(str);
 469
 470         max_cpu = cpus_online();
 471
 472         while ((cpu = strsep(&str, ",")) != NULL) {
 473                 char *str2, *cpu2;
 474                 int icpu, icpu2;
 475
 476                 if (!strlen(cpu))
 477                         break;
 478
 479                 str2 = cpu;
 480                 icpu2 = -1;
 481                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 482                         if (!strlen(cpu2))
 483                                 break;
 484
 485                         icpu2 = atoi(cpu2);
 486                 }
 487
 488                 icpu = atoi(cpu);
 489                 if (icpu2 == -1)
 490                         icpu2 = icpu;
 491                 while (icpu <= icpu2) {
 492                         if (icpu >= FIO_MAX_CPUS) {
 493                                 log_err("fio: your OS only supports up to"
 494                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 495                                 ret = 1;
 496                                 break;
 497                         }
 498                         if (icpu >= max_cpu) {
 499                                 log_err("fio: CPU %d too large (max=%ld)\n",
 500                                                         icpu, max_cpu - 1);
 501                                 ret = 1;
 502                                 break;
 503                         }
 504
 505                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 506                         fio_cpu_set(mask, icpu);
 507                         icpu++;
 508                 }
 509                 if (ret)
 510                         break;
 511         }
 512
 513         free(p);
 514         return ret;
 515 }
 516
 517 static int str_cpus_allowed_cb(void *data, const char *input)
 518 {
 519         struct thread_data *td = data;
 520
 521         if (parse_dryrun())
 522                 return 0;
 523
 524         return set_cpus_allowed(td, &td->o.cpumask, input);
 525 }
 526
 527 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 528 {
 529         struct thread_data *td = data;
 530
 531         return set_cpus_allowed(td, &td->o.verify_cpumask, input);
 532 }
 533 #endif
 534
 535 #ifdef CONFIG_LIBNUMA
 536 static int str_numa_cpunodes_cb(void *data, char *input)
 537 {
 538         struct thread_data *td = data;
 539         struct bitmask *verify_bitmask;
 540
 541         if (parse_dryrun())
 542                 return 0;
 543
 544         /* numa_parse_nodestring() parses a character string list
 545          * of nodes into a bit mask. The bit mask is allocated by
 546          * numa_allocate_nodemask(), so it should be freed by
 547          * numa_free_nodemask().
 548          */
 549         verify_bitmask = numa_parse_nodestring(input);
 550         if (verify_bitmask == NULL) {
 551                 log_err("fio: numa_parse_nodestring failed\n");
 552                 td_verror(td, 1, "str_numa_cpunodes_cb");
 553                 return 1;
 554         }
 555         numa_free_nodemask(verify_bitmask);
 556
 557         td->o.numa_cpunodes = strdup(input);
 558         return 0;
 559 }
 560
 561 static int str_numa_mpol_cb(void *data, char *input)
 562 {
 563         struct thread_data *td = data;
 564         const char * const policy_types[] =
 565                 { "default", "prefer", "bind", "interleave", "local", NULL };
 566         int i;
 567         char *nodelist;
 568         struct bitmask *verify_bitmask;
 569
 570         if (parse_dryrun())
 571                 return 0;
 572
 573         nodelist = strchr(input, ':');
 574         if (nodelist) {
 575                 /* NUL-terminate mode */
 576                 *nodelist++ = '\0';
 577         }
 578
 579         for (i = 0; i <= MPOL_LOCAL; i++) {
 580                 if (!strcmp(input, policy_types[i])) {
 581                         td->o.numa_mem_mode = i;
 582                         break;
 583                 }
 584         }
 585         if (i > MPOL_LOCAL) {
 586                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 587                 goto out;
 588         }
 589
 590         switch (td->o.numa_mem_mode) {
 591         case MPOL_PREFERRED:
 592                 /*
 593                  * Insist on a nodelist of one node only
 594                  */
 595                 if (nodelist) {
 596                         char *rest = nodelist;
 597                         while (isdigit(*rest))
 598                                 rest++;
 599                         if (*rest) {
 600                                 log_err("fio: one node only for \'prefer\'\n");
 601                                 goto out;
 602                         }
 603                 } else {
 604                         log_err("fio: one node is needed for \'prefer\'\n");
 605                         goto out;
 606                 }
 607                 break;
 608         case MPOL_INTERLEAVE:
 609                 /*
 610                  * Default to online nodes with memory if no nodelist
 611                  */
 612                 if (!nodelist)
 613                         nodelist = strdup("all");
 614                 break;
 615         case MPOL_LOCAL:
 616         case MPOL_DEFAULT:
 617                 /*
 618                  * Don't allow a nodelist
 619                  */
 620                 if (nodelist) {
 621                         log_err("fio: NO nodelist for \'local\'\n");
 622                         goto out;
 623                 }
 624                 break;
 625         case MPOL_BIND:
 626                 /*
 627                  * Insist on a nodelist
 628                  */
 629                 if (!nodelist) {
 630                         log_err("fio: a nodelist is needed for \'bind\'\n");
 631                         goto out;
 632                 }
 633                 break;
 634         }
 635
 636
 637         /* numa_parse_nodestring() parses a character string list
 638          * of nodes into a bit mask. The bit mask is allocated by
 639          * numa_allocate_nodemask(), so it should be freed by
 640          * numa_free_nodemask().
 641          */
 642         switch (td->o.numa_mem_mode) {
 643         case MPOL_PREFERRED:
 644                 td->o.numa_mem_prefer_node = atoi(nodelist);
 645                 break;
 646         case MPOL_INTERLEAVE:
 647         case MPOL_BIND:
 648                 verify_bitmask = numa_parse_nodestring(nodelist);
 649                 if (verify_bitmask == NULL) {
 650                         log_err("fio: numa_parse_nodestring failed\n");
 651                         td_verror(td, 1, "str_numa_memnodes_cb");
 652                         return 1;
 653                 }
 654                 td->o.numa_memnodes = strdup(nodelist);
 655                 numa_free_nodemask(verify_bitmask);
 656
 657                 break;
 658         case MPOL_LOCAL:
 659         case MPOL_DEFAULT:
 660         default:
 661                 break;
 662         }
 663
 664         return 0;
 665 out:
 666         return 1;
 667 }
 668 #endif
 669
 670 static int str_fst_cb(void *data, const char *str)
 671 {
 672         struct thread_data *td = data;
 673         char *nr = get_opt_postfix(str);
 674
 675         td->file_service_nr = 1;
 676         if (nr) {
 677                 td->file_service_nr = atoi(nr);
 678                 free(nr);
 679         }
 680
 681         return 0;
 682 }
 683
 684 #ifdef CONFIG_SYNC_FILE_RANGE
 685 static int str_sfr_cb(void *data, const char *str)
 686 {
 687         struct thread_data *td = data;
 688         char *nr = get_opt_postfix(str);
 689
 690         td->sync_file_range_nr = 1;
 691         if (nr) {
 692                 td->sync_file_range_nr = atoi(nr);
 693                 free(nr);
 694         }
 695
 696         return 0;
 697 }
 698 #endif
 699
 700 static int str_random_distribution_cb(void *data, const char *str)
 701 {
 702         struct thread_data *td = data;
 703         double val;
 704         char *nr;
 705
 706         if (parse_dryrun())
 707                 return 0;
 708
 709         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 710                 val = FIO_DEF_ZIPF;
 711         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 712                 val = FIO_DEF_PARETO;
 713         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
 714                 val = 0.0;
 715         else
 716                 return 0;
 717
 718         nr = get_opt_postfix(str);
 719         if (nr && !str_to_float(nr, &val, 0)) {
 720                 log_err("fio: random postfix parsing failed\n");
 721                 free(nr);
 722                 return 1;
 723         }
 724
 725         free(nr);
 726
 727         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 728                 if (val == 1.00) {
 729                         log_err("fio: zipf theta must different than 1.0\n");
 730                         return 1;
 731                 }
 732                 td->o.zipf_theta.u.f = val;
 733         } else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) {
 734                 if (val <= 0.00 || val >= 1.00) {
 735                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 736                         return 1;
 737                 }
 738                 td->o.pareto_h.u.f = val;
 739         } else {
 740                 if (val <= 0.00 || val >= 100.0) {
 741                         log_err("fio: normal deviation out of range (0 < input < 100.0)\n");
 742                         return 1;
 743                 }
 744                 td->o.gauss_dev.u.f = val;
 745         }
 746
 747         return 0;
 748 }
 749
 750 /*
 751  * Return next name in the string. Files are separated with ':'. If the ':'
 752  * is escaped with a '\', then that ':' is part of the filename and does not
 753  * indicate a new file.
 754  */
 755 static char *get_next_name(char **ptr)
 756 {
 757         char *str = *ptr;
 758         char *p, *start;
 759
 760         if (!str || !strlen(str))
 761                 return NULL;
 762
 763         start = str;
 764         do {
 765                 /*
 766                  * No colon, we are done
 767                  */
 768                 p = strchr(str, ':');
 769                 if (!p) {
 770                         *ptr = NULL;
 771                         break;
 772                 }
 773
 774                 /*
 775                  * We got a colon, but it's the first character. Skip and
 776                  * continue
 777                  */
 778                 if (p == start) {
 779                         str = ++start;
 780                         continue;
 781                 }
 782
 783                 if (*(p - 1) != '\\') {
 784                         *p = '\0';
 785                         *ptr = p + 1;
 786                         break;
 787                 }
 788
 789                 memmove(p - 1, p, strlen(p) + 1);
 790                 str = p;
 791         } while (1);
 792
 793         return start;
 794 }
 795
 796
 797 static int get_max_name_idx(char *input)
 798 {
 799         unsigned int cur_idx;
 800         char *str, *p;
 801
 802         p = str = strdup(input);
 803         for (cur_idx = 0; ; cur_idx++)
 804                 if (get_next_name(&str) == NULL)
 805                         break;
 806
 807         free(p);
 808         return cur_idx;
 809 }
 810
 811 /*
 812  * Returns the directory at the index, indexes > entires will be
 813  * assigned via modulo division of the index
 814  */
 815 int set_name_idx(char *target, size_t tlen, char *input, int index)
 816 {
 817         unsigned int cur_idx;
 818         int len;
 819         char *fname, *str, *p;
 820
 821         p = str = strdup(input);
 822
 823         index %= get_max_name_idx(input);
 824         for (cur_idx = 0; cur_idx <= index; cur_idx++)
 825                 fname = get_next_name(&str);
 826
 827         if (client_sockaddr_str[0]) {
 828                 len = snprintf(target, tlen, "%s/%s.", fname,
 829                                 client_sockaddr_str);
 830         } else
 831                 len = snprintf(target, tlen, "%s/", fname);
 832
 833         target[tlen - 1] = '\0';
 834         free(p);
 835
 836         return len;
 837 }
 838
 839 static int str_filename_cb(void *data, const char *input)
 840 {
 841         struct thread_data *td = data;
 842         char *fname, *str, *p;
 843
 844         p = str = strdup(input);
 845
 846         strip_blank_front(&str);
 847         strip_blank_end(str);
 848
 849         if (!td->files_index)
 850                 td->o.nr_files = 0;
 851
 852         while ((fname = get_next_name(&str)) != NULL) {
 853                 if (!strlen(fname))
 854                         break;
 855                 add_file(td, fname, 0, 1);
 856         }
 857
 858         free(p);
 859         return 0;
 860 }
 861
 862 static int str_directory_cb(void *data, const char fio_unused *unused)
 863 {
 864         struct thread_data *td = data;
 865         struct stat sb;
 866         char *dirname, *str, *p;
 867         int ret = 0;
 868
 869         if (parse_dryrun())
 870                 return 0;
 871
 872         p = str = strdup(td->o.directory);
 873         while ((dirname = get_next_name(&str)) != NULL) {
 874                 if (lstat(dirname, &sb) < 0) {
 875                         ret = errno;
 876
 877                         log_err("fio: %s is not a directory\n", dirname);
 878                         td_verror(td, ret, "lstat");
 879                         goto out;
 880                 }
 881                 if (!S_ISDIR(sb.st_mode)) {
 882                         log_err("fio: %s is not a directory\n", dirname);
 883                         ret = 1;
 884                         goto out;
 885                 }
 886         }
 887
 888 out:
 889         free(p);
 890         return ret;
 891 }
 892
 893 static int str_opendir_cb(void *data, const char fio_unused *str)
 894 {
 895         struct thread_data *td = data;
 896
 897         if (parse_dryrun())
 898                 return 0;
 899
 900         if (!td->files_index)
 901                 td->o.nr_files = 0;
 902
 903         return add_dir_files(td, td->o.opendir);
 904 }
 905
 906 static int str_buffer_pattern_cb(void *data, const char *input)
 907 {
 908         struct thread_data *td = data;
 909         int ret;
 910
 911         /* FIXME: for now buffer pattern does not support formats */
 912         ret = parse_and_fill_pattern(input, strlen(input), td->o.buffer_pattern,
 913                                      MAX_PATTERN_SIZE, NULL, 0, NULL, NULL);
 914         if (ret < 0)
 915                 return 1;
 916
 917         assert(ret != 0);
 918         td->o.buffer_pattern_bytes = ret;
 919         if (!td->o.compress_percentage)
 920                 td->o.refill_buffers = 0;
 921         td->o.scramble_buffers = 0;
 922         td->o.zero_buffers = 0;
 923
 924         return 0;
 925 }
 926
 927 static int str_buffer_compress_cb(void *data, unsigned long long *il)
 928 {
 929         struct thread_data *td = data;
 930
 931         td->flags |= TD_F_COMPRESS;
 932         td->o.compress_percentage = *il;
 933         return 0;
 934 }
 935
 936 static int str_dedupe_cb(void *data, unsigned long long *il)
 937 {
 938         struct thread_data *td = data;
 939
 940         td->flags |= TD_F_COMPRESS;
 941         td->o.dedupe_percentage = *il;
 942         td->o.refill_buffers = 1;
 943         return 0;
 944 }
 945
 946 static int str_verify_pattern_cb(void *data, const char *input)
 947 {
 948         struct thread_data *td = data;
 949         int ret;
 950
 951         td->o.verify_fmt_sz = ARRAY_SIZE(td->o.verify_fmt);
 952         ret = parse_and_fill_pattern(input, strlen(input), td->o.verify_pattern,
 953                                      MAX_PATTERN_SIZE, fmt_desc, sizeof(fmt_desc),
 954                                      td->o.verify_fmt, &td->o.verify_fmt_sz);
 955         if (ret < 0)
 956                 return 1;
 957
 958         assert(ret != 0);
 959         td->o.verify_pattern_bytes = ret;
 960         /*
 961          * VERIFY_* could already be set
 962          */
 963         if (!fio_option_is_set(&td->o, verify))
 964                 td->o.verify = VERIFY_PATTERN;
 965
 966         return 0;
 967 }
 968
 969 static int str_gtod_reduce_cb(void *data, int *il)
 970 {
 971         struct thread_data *td = data;
 972         int val = *il;
 973
 974         td->o.disable_lat = !!val;
 975         td->o.disable_clat = !!val;
 976         td->o.disable_slat = !!val;
 977         td->o.disable_bw = !!val;
 978         td->o.clat_percentiles = !val;
 979         if (val)
 980                 td->tv_cache_mask = 63;
 981
 982         return 0;
 983 }
 984
 985 static int str_size_cb(void *data, unsigned long long *__val)
 986 {
 987         struct thread_data *td = data;
 988         unsigned long long v = *__val;
 989
 990         if (parse_is_percent(v)) {
 991                 td->o.size = 0;
 992                 td->o.size_percent = -1ULL - v;
 993         } else
 994                 td->o.size = v;
 995
 996         return 0;
 997 }
 998
 999 static int rw_verify(struct fio_option *o, void *data)
1000 {
1001         struct thread_data *td = data;
1002
1003         if (read_only && td_write(td)) {
1004                 log_err("fio: job <%s> has write bit set, but fio is in"
1005                         " read-only mode\n", td->o.name);
1006                 return 1;
1007         }
1008
1009         return 0;
1010 }
1011
1012 static int gtod_cpu_verify(struct fio_option *o, void *data)
1013 {
1014 #ifndef FIO_HAVE_CPU_AFFINITY
1015         struct thread_data *td = data;
1016
1017         if (td->o.gtod_cpu) {
1018                 log_err("fio: platform must support CPU affinity for"
1019                         "gettimeofday() offloading\n");
1020                 return 1;
1021         }
1022 #endif
1023
1024         return 0;
1025 }
1026
1027 /*
1028  * Option grouping
1029  */
1030 static struct opt_group fio_opt_groups[] = {
1031         {
1032                 .name   = "General",
1033                 .mask   = FIO_OPT_C_GENERAL,
1034         },
1035         {
1036                 .name   = "I/O",
1037                 .mask   = FIO_OPT_C_IO,
1038         },
1039         {
1040                 .name   = "File",
1041                 .mask   = FIO_OPT_C_FILE,
1042         },
1043         {
1044                 .name   = "Statistics",
1045                 .mask   = FIO_OPT_C_STAT,
1046         },
1047         {
1048                 .name   = "Logging",
1049                 .mask   = FIO_OPT_C_LOG,
1050         },
1051         {
1052                 .name   = "Profiles",
1053                 .mask   = FIO_OPT_C_PROFILE,
1054         },
1055         {
1056                 .name   = NULL,
1057         },
1058 };
1059
1060 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1061                                                unsigned int inv_mask)
1062 {
1063         struct opt_group *og;
1064         int i;
1065
1066         if (*mask == inv_mask || !*mask)
1067                 return NULL;
1068
1069         for (i = 0; ogs[i].name; i++) {
1070                 og = &ogs[i];
1071
1072                 if (*mask & og->mask) {
1073                         *mask &= ~(og->mask);
1074                         return og;
1075                 }
1076         }
1077
1078         return NULL;
1079 }
1080
1081 struct opt_group *opt_group_from_mask(unsigned int *mask)
1082 {
1083         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1084 }
1085
1086 static struct opt_group fio_opt_cat_groups[] = {
1087         {
1088                 .name   = "Latency profiling",
1089                 .mask   = FIO_OPT_G_LATPROF,
1090         },
1091         {
1092                 .name   = "Rate",
1093                 .mask   = FIO_OPT_G_RATE,
1094         },
1095         {
1096                 .name   = "Zone",
1097                 .mask   = FIO_OPT_G_ZONE,
1098         },
1099         {
1100                 .name   = "Read/write mix",
1101                 .mask   = FIO_OPT_G_RWMIX,
1102         },
1103         {
1104                 .name   = "Verify",
1105                 .mask   = FIO_OPT_G_VERIFY,
1106         },
1107         {
1108                 .name   = "Trim",
1109                 .mask   = FIO_OPT_G_TRIM,
1110         },
1111         {
1112                 .name   = "I/O Logging",
1113                 .mask   = FIO_OPT_G_IOLOG,
1114         },
1115         {
1116                 .name   = "I/O Depth",
1117                 .mask   = FIO_OPT_G_IO_DEPTH,
1118         },
1119         {
1120                 .name   = "I/O Flow",
1121                 .mask   = FIO_OPT_G_IO_FLOW,
1122         },
1123         {
1124                 .name   = "Description",
1125                 .mask   = FIO_OPT_G_DESC,
1126         },
1127         {
1128                 .name   = "Filename",
1129                 .mask   = FIO_OPT_G_FILENAME,
1130         },
1131         {
1132                 .name   = "General I/O",
1133                 .mask   = FIO_OPT_G_IO_BASIC,
1134         },
1135         {
1136                 .name   = "Cgroups",
1137                 .mask   = FIO_OPT_G_CGROUP,
1138         },
1139         {
1140                 .name   = "Runtime",
1141                 .mask   = FIO_OPT_G_RUNTIME,
1142         },
1143         {
1144                 .name   = "Process",
1145                 .mask   = FIO_OPT_G_PROCESS,
1146         },
1147         {
1148                 .name   = "Job credentials / priority",
1149                 .mask   = FIO_OPT_G_CRED,
1150         },
1151         {
1152                 .name   = "Clock settings",
1153                 .mask   = FIO_OPT_G_CLOCK,
1154         },
1155         {
1156                 .name   = "I/O Type",
1157                 .mask   = FIO_OPT_G_IO_TYPE,
1158         },
1159         {
1160                 .name   = "I/O Thinktime",
1161                 .mask   = FIO_OPT_G_THINKTIME,
1162         },
1163         {
1164                 .name   = "Randomizations",
1165                 .mask   = FIO_OPT_G_RANDOM,
1166         },
1167         {
1168                 .name   = "I/O buffers",
1169                 .mask   = FIO_OPT_G_IO_BUF,
1170         },
1171         {
1172                 .name   = "Tiobench profile",
1173                 .mask   = FIO_OPT_G_TIOBENCH,
1174         },
1175         {
1176                 .name   = "MTD",
1177                 .mask   = FIO_OPT_G_MTD,
1178         },
1179
1180         {
1181                 .name   = NULL,
1182         }
1183 };
1184
1185 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1186 {
1187         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1188 }
1189
1190 /*
1191  * Map of job/command line options
1192  */
1193 struct fio_option fio_options[FIO_MAX_OPTS] = {
1194         {
1195                 .name   = "description",
1196                 .lname  = "Description of job",
1197                 .type   = FIO_OPT_STR_STORE,
1198                 .off1   = td_var_offset(description),
1199                 .help   = "Text job description",
1200                 .category = FIO_OPT_C_GENERAL,
1201                 .group  = FIO_OPT_G_DESC,
1202         },
1203         {
1204                 .name   = "name",
1205                 .lname  = "Job name",
1206                 .type   = FIO_OPT_STR_STORE,
1207                 .off1   = td_var_offset(name),
1208                 .help   = "Name of this job",
1209                 .category = FIO_OPT_C_GENERAL,
1210                 .group  = FIO_OPT_G_DESC,
1211         },
1212         {
1213                 .name   = "filename",
1214                 .lname  = "Filename(s)",
1215                 .type   = FIO_OPT_STR_STORE,
1216                 .off1   = td_var_offset(filename),
1217                 .cb     = str_filename_cb,
1218                 .prio   = -1, /* must come after "directory" */
1219                 .help   = "File(s) to use for the workload",
1220                 .category = FIO_OPT_C_FILE,
1221                 .group  = FIO_OPT_G_FILENAME,
1222         },
1223         {
1224                 .name   = "directory",
1225                 .lname  = "Directory",
1226                 .type   = FIO_OPT_STR_STORE,
1227                 .off1   = td_var_offset(directory),
1228                 .cb     = str_directory_cb,
1229                 .help   = "Directory to store files in",
1230                 .category = FIO_OPT_C_FILE,
1231                 .group  = FIO_OPT_G_FILENAME,
1232         },
1233         {
1234                 .name   = "filename_format",
1235                 .type   = FIO_OPT_STR_STORE,
1236                 .off1   = td_var_offset(filename_format),
1237                 .prio   = -1, /* must come after "directory" */
1238                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1239                 .def    = "$jobname.$jobnum.$filenum",
1240                 .category = FIO_OPT_C_FILE,
1241                 .group  = FIO_OPT_G_FILENAME,
1242         },
1243         {
1244                 .name   = "lockfile",
1245                 .lname  = "Lockfile",
1246                 .type   = FIO_OPT_STR,
1247                 .off1   = td_var_offset(file_lock_mode),
1248                 .help   = "Lock file when doing IO to it",
1249                 .prio   = 1,
1250                 .parent = "filename",
1251                 .hide   = 0,
1252                 .def    = "none",
1253                 .category = FIO_OPT_C_FILE,
1254                 .group  = FIO_OPT_G_FILENAME,
1255                 .posval = {
1256                           { .ival = "none",
1257                             .oval = FILE_LOCK_NONE,
1258                             .help = "No file locking",
1259                           },
1260                           { .ival = "exclusive",
1261                             .oval = FILE_LOCK_EXCLUSIVE,
1262                             .help = "Exclusive file lock",
1263                           },
1264                           {
1265                             .ival = "readwrite",
1266                             .oval = FILE_LOCK_READWRITE,
1267                             .help = "Read vs write lock",
1268                           },
1269                 },
1270         },
1271         {
1272                 .name   = "opendir",
1273                 .lname  = "Open directory",
1274                 .type   = FIO_OPT_STR_STORE,
1275                 .off1   = td_var_offset(opendir),
1276                 .cb     = str_opendir_cb,
1277                 .help   = "Recursively add files from this directory and down",
1278                 .category = FIO_OPT_C_FILE,
1279                 .group  = FIO_OPT_G_FILENAME,
1280         },
1281         {
1282                 .name   = "rw",
1283                 .lname  = "Read/write",
1284                 .alias  = "readwrite",
1285                 .type   = FIO_OPT_STR,
1286                 .cb     = str_rw_cb,
1287                 .off1   = td_var_offset(td_ddir),
1288                 .help   = "IO direction",
1289                 .def    = "read",
1290                 .verify = rw_verify,
1291                 .category = FIO_OPT_C_IO,
1292                 .group  = FIO_OPT_G_IO_BASIC,
1293                 .posval = {
1294                           { .ival = "read",
1295                             .oval = TD_DDIR_READ,
1296                             .help = "Sequential read",
1297                           },
1298                           { .ival = "write",
1299                             .oval = TD_DDIR_WRITE,
1300                             .help = "Sequential write",
1301                           },
1302                           { .ival = "trim",
1303                             .oval = TD_DDIR_TRIM,
1304                             .help = "Sequential trim",
1305                           },
1306                           { .ival = "randread",
1307                             .oval = TD_DDIR_RANDREAD,
1308                             .help = "Random read",
1309                           },
1310                           { .ival = "randwrite",
1311                             .oval = TD_DDIR_RANDWRITE,
1312                             .help = "Random write",
1313                           },
1314                           { .ival = "randtrim",
1315                             .oval = TD_DDIR_RANDTRIM,
1316                             .help = "Random trim",
1317                           },
1318                           { .ival = "rw",
1319                             .oval = TD_DDIR_RW,
1320                             .help = "Sequential read and write mix",
1321                           },
1322                           { .ival = "readwrite",
1323                             .oval = TD_DDIR_RW,
1324                             .help = "Sequential read and write mix",
1325                           },
1326                           { .ival = "randrw",
1327                             .oval = TD_DDIR_RANDRW,
1328                             .help = "Random read and write mix"
1329                           },
1330                           { .ival = "trimwrite",
1331                             .oval = TD_DDIR_TRIMWRITE,
1332                             .help = "Trim and write mix, trims preceding writes"
1333                           },
1334                 },
1335         },
1336         {
1337                 .name   = "rw_sequencer",
1338                 .lname  = "RW Sequencer",
1339                 .type   = FIO_OPT_STR,
1340                 .off1   = td_var_offset(rw_seq),
1341                 .help   = "IO offset generator modifier",
1342                 .def    = "sequential",
1343                 .category = FIO_OPT_C_IO,
1344                 .group  = FIO_OPT_G_IO_BASIC,
1345                 .posval = {
1346                           { .ival = "sequential",
1347                             .oval = RW_SEQ_SEQ,
1348                             .help = "Generate sequential offsets",
1349                           },
1350                           { .ival = "identical",
1351                             .oval = RW_SEQ_IDENT,
1352                             .help = "Generate identical offsets",
1353                           },
1354                 },
1355         },
1356
1357         {
1358                 .name   = "ioengine",
1359                 .lname  = "IO Engine",
1360                 .type   = FIO_OPT_STR_STORE,
1361                 .off1   = td_var_offset(ioengine),
1362                 .help   = "IO engine to use",
1363                 .def    = FIO_PREFERRED_ENGINE,
1364                 .category = FIO_OPT_C_IO,
1365                 .group  = FIO_OPT_G_IO_BASIC,
1366                 .posval = {
1367                           { .ival = "sync",
1368                             .help = "Use read/write",
1369                           },
1370                           { .ival = "psync",
1371                             .help = "Use pread/pwrite",
1372                           },
1373                           { .ival = "vsync",
1374                             .help = "Use readv/writev",
1375                           },
1376 #ifdef CONFIG_PWRITEV
1377                           { .ival = "pvsync",
1378                             .help = "Use preadv/pwritev",
1379                           },
1380 #endif
1381 #ifdef CONFIG_LIBAIO
1382                           { .ival = "libaio",
1383                             .help = "Linux native asynchronous IO",
1384                           },
1385 #endif
1386 #ifdef CONFIG_POSIXAIO
1387                           { .ival = "posixaio",
1388                             .help = "POSIX asynchronous IO",
1389                           },
1390 #endif
1391 #ifdef CONFIG_SOLARISAIO
1392                           { .ival = "solarisaio",
1393                             .help = "Solaris native asynchronous IO",
1394                           },
1395 #endif
1396 #ifdef CONFIG_WINDOWSAIO
1397                           { .ival = "windowsaio",
1398                             .help = "Windows native asynchronous IO"
1399                           },
1400 #endif
1401 #ifdef CONFIG_RBD
1402                           { .ival = "rbd",
1403                             .help = "Rados Block Device asynchronous IO"
1404                           },
1405 #endif
1406                           { .ival = "mmap",
1407                             .help = "Memory mapped IO"
1408                           },
1409 #ifdef CONFIG_LINUX_SPLICE
1410                           { .ival = "splice",
1411                             .help = "splice/vmsplice based IO",
1412                           },
1413                           { .ival = "netsplice",
1414                             .help = "splice/vmsplice to/from the network",
1415                           },
1416 #endif
1417 #ifdef FIO_HAVE_SGIO
1418                           { .ival = "sg",
1419                             .help = "SCSI generic v3 IO",
1420                           },
1421 #endif
1422                           { .ival = "null",
1423                             .help = "Testing engine (no data transfer)",
1424                           },
1425                           { .ival = "net",
1426                             .help = "Network IO",
1427                           },
1428                           { .ival = "cpuio",
1429                             .help = "CPU cycle burner engine",
1430                           },
1431 #ifdef CONFIG_GUASI
1432                           { .ival = "guasi",
1433                             .help = "GUASI IO engine",
1434                           },
1435 #endif
1436 #ifdef FIO_HAVE_BINJECT
1437                           { .ival = "binject",
1438                             .help = "binject direct inject block engine",
1439                           },
1440 #endif
1441 #ifdef CONFIG_RDMA
1442                           { .ival = "rdma",
1443                             .help = "RDMA IO engine",
1444                           },
1445 #endif
1446 #ifdef CONFIG_FUSION_AW
1447                           { .ival = "fusion-aw-sync",
1448                             .help = "Fusion-io atomic write engine",
1449                           },
1450 #endif
1451 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1452                           { .ival = "e4defrag",
1453                             .help = "ext4 defrag engine",
1454                           },
1455 #endif
1456 #ifdef CONFIG_LINUX_FALLOCATE
1457                           { .ival = "falloc",
1458                             .help = "fallocate() file based engine",
1459                           },
1460 #endif
1461 #ifdef CONFIG_GFAPI
1462                           { .ival = "gfapi",
1463                             .help = "Glusterfs libgfapi(sync) based engine"
1464                           },
1465                           { .ival = "gfapi_async",
1466                             .help = "Glusterfs libgfapi(async) based engine"
1467                           },
1468 #endif
1469 #ifdef CONFIG_LIBHDFS
1470                           { .ival = "libhdfs",
1471                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1472                           },
1473 #endif
1474                           { .ival = "external",
1475                             .help = "Load external engine (append name)",
1476                           },
1477                 },
1478         },
1479         {
1480                 .name   = "iodepth",
1481                 .lname  = "IO Depth",
1482                 .type   = FIO_OPT_INT,
1483                 .off1   = td_var_offset(iodepth),
1484                 .help   = "Number of IO buffers to keep in flight",
1485                 .minval = 1,
1486                 .interval = 1,
1487                 .def    = "1",
1488                 .category = FIO_OPT_C_IO,
1489                 .group  = FIO_OPT_G_IO_BASIC,
1490         },
1491         {
1492                 .name   = "iodepth_batch",
1493                 .lname  = "IO Depth batch",
1494                 .alias  = "iodepth_batch_submit",
1495                 .type   = FIO_OPT_INT,
1496                 .off1   = td_var_offset(iodepth_batch),
1497                 .help   = "Number of IO buffers to submit in one go",
1498                 .parent = "iodepth",
1499                 .hide   = 1,
1500                 .minval = 1,
1501                 .interval = 1,
1502                 .def    = "1",
1503                 .category = FIO_OPT_C_IO,
1504                 .group  = FIO_OPT_G_IO_BASIC,
1505         },
1506         {
1507                 .name   = "iodepth_batch_complete_min",
1508                 .lname  = "Min IO depth batch complete",
1509                 .alias  = "iodepth_batch_complete",
1510                 .type   = FIO_OPT_INT,
1511                 .off1   = td_var_offset(iodepth_batch_complete_min),
1512                 .help   = "Min number of IO buffers to retrieve in one go",
1513                 .parent = "iodepth",
1514                 .hide   = 1,
1515                 .minval = 0,
1516                 .interval = 1,
1517                 .def    = "1",
1518                 .category = FIO_OPT_C_IO,
1519                 .group  = FIO_OPT_G_IO_BASIC,
1520         },
1521         {
1522                 .name   = "iodepth_batch_complete_max",
1523                 .lname  = "Max IO depth batch complete",
1524                 .type   = FIO_OPT_INT,
1525                 .off1   = td_var_offset(iodepth_batch_complete_max),
1526                 .help   = "Max number of IO buffers to retrieve in one go",
1527                 .parent = "iodepth",
1528                 .hide   = 1,
1529                 .minval = 0,
1530                 .interval = 1,
1531                 .category = FIO_OPT_C_IO,
1532                 .group  = FIO_OPT_G_IO_BASIC,
1533         },
1534         {
1535                 .name   = "iodepth_low",
1536                 .lname  = "IO Depth batch low",
1537                 .type   = FIO_OPT_INT,
1538                 .off1   = td_var_offset(iodepth_low),
1539                 .help   = "Low water mark for queuing depth",
1540                 .parent = "iodepth",
1541                 .hide   = 1,
1542                 .interval = 1,
1543                 .category = FIO_OPT_C_IO,
1544                 .group  = FIO_OPT_G_IO_BASIC,
1545         },
1546         {
1547                 .name   = "io_submit_mode",
1548                 .lname  = "IO submit mode",
1549                 .type   = FIO_OPT_STR,
1550                 .off1   = td_var_offset(io_submit_mode),
1551                 .help   = "How IO submissions and completions are done",
1552                 .def    = "inline",
1553                 .category = FIO_OPT_C_IO,
1554                 .group  = FIO_OPT_G_IO_BASIC,
1555                 .posval = {
1556                           { .ival = "inline",
1557                             .oval = IO_MODE_INLINE,
1558                             .help = "Submit and complete IO inline",
1559                           },
1560                           { .ival = "offload",
1561                             .oval = IO_MODE_OFFLOAD,
1562                             .help = "Offload submit and complete to threads",
1563                           },
1564                 },
1565         },
1566         {
1567                 .name   = "size",
1568                 .lname  = "Size",
1569                 .type   = FIO_OPT_STR_VAL,
1570                 .cb     = str_size_cb,
1571                 .off1   = td_var_offset(size),
1572                 .help   = "Total size of device or files",
1573                 .interval = 1024 * 1024,
1574                 .category = FIO_OPT_C_IO,
1575                 .group  = FIO_OPT_G_INVALID,
1576         },
1577         {
1578                 .name   = "io_size",
1579                 .alias  = "io_limit",
1580                 .lname  = "IO Size",
1581                 .type   = FIO_OPT_STR_VAL,
1582                 .off1   = td_var_offset(io_limit),
1583                 .interval = 1024 * 1024,
1584                 .category = FIO_OPT_C_IO,
1585                 .group  = FIO_OPT_G_INVALID,
1586         },
1587         {
1588                 .name   = "fill_device",
1589                 .lname  = "Fill device",
1590                 .alias  = "fill_fs",
1591                 .type   = FIO_OPT_BOOL,
1592                 .off1   = td_var_offset(fill_device),
1593                 .help   = "Write until an ENOSPC error occurs",
1594                 .def    = "0",
1595                 .category = FIO_OPT_C_FILE,
1596                 .group  = FIO_OPT_G_INVALID,
1597         },
1598         {
1599                 .name   = "filesize",
1600                 .lname  = "File size",
1601                 .type   = FIO_OPT_STR_VAL,
1602                 .off1   = td_var_offset(file_size_low),
1603                 .off2   = td_var_offset(file_size_high),
1604                 .minval = 1,
1605                 .help   = "Size of individual files",
1606                 .interval = 1024 * 1024,
1607                 .category = FIO_OPT_C_FILE,
1608                 .group  = FIO_OPT_G_INVALID,
1609         },
1610         {
1611                 .name   = "file_append",
1612                 .lname  = "File append",
1613                 .type   = FIO_OPT_BOOL,
1614                 .off1   = td_var_offset(file_append),
1615                 .help   = "IO will start at the end of the file(s)",
1616                 .def    = "0",
1617                 .category = FIO_OPT_C_FILE,
1618                 .group  = FIO_OPT_G_INVALID,
1619         },
1620         {
1621                 .name   = "offset",
1622                 .lname  = "IO offset",
1623                 .alias  = "fileoffset",
1624                 .type   = FIO_OPT_STR_VAL,
1625                 .off1   = td_var_offset(start_offset),
1626                 .help   = "Start IO from this offset",
1627                 .def    = "0",
1628                 .interval = 1024 * 1024,
1629                 .category = FIO_OPT_C_IO,
1630                 .group  = FIO_OPT_G_INVALID,
1631         },
1632         {
1633                 .name   = "offset_increment",
1634                 .lname  = "IO offset increment",
1635                 .type   = FIO_OPT_STR_VAL,
1636                 .off1   = td_var_offset(offset_increment),
1637                 .help   = "What is the increment from one offset to the next",
1638                 .parent = "offset",
1639                 .hide   = 1,
1640                 .def    = "0",
1641                 .interval = 1024 * 1024,
1642                 .category = FIO_OPT_C_IO,
1643                 .group  = FIO_OPT_G_INVALID,
1644         },
1645         {
1646                 .name   = "number_ios",
1647                 .lname  = "Number of IOs to perform",
1648                 .type   = FIO_OPT_STR_VAL,
1649                 .off1   = td_var_offset(number_ios),
1650                 .help   = "Force job completion after this number of IOs",
1651                 .def    = "0",
1652                 .category = FIO_OPT_C_IO,
1653                 .group  = FIO_OPT_G_INVALID,
1654         },
1655         {
1656                 .name   = "bs",
1657                 .lname  = "Block size",
1658                 .alias  = "blocksize",
1659                 .type   = FIO_OPT_INT,
1660                 .off1   = td_var_offset(bs[DDIR_READ]),
1661                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1662                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1663                 .minval = 1,
1664                 .help   = "Block size unit",
1665                 .def    = "4k",
1666                 .parent = "rw",
1667                 .hide   = 1,
1668                 .interval = 512,
1669                 .category = FIO_OPT_C_IO,
1670                 .group  = FIO_OPT_G_INVALID,
1671         },
1672         {
1673                 .name   = "ba",
1674                 .lname  = "Block size align",
1675                 .alias  = "blockalign",
1676                 .type   = FIO_OPT_INT,
1677                 .off1   = td_var_offset(ba[DDIR_READ]),
1678                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1679                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1680                 .minval = 1,
1681                 .help   = "IO block offset alignment",
1682                 .parent = "rw",
1683                 .hide   = 1,
1684                 .interval = 512,
1685                 .category = FIO_OPT_C_IO,
1686                 .group  = FIO_OPT_G_INVALID,
1687         },
1688         {
1689                 .name   = "bsrange",
1690                 .lname  = "Block size range",
1691                 .alias  = "blocksize_range",
1692                 .type   = FIO_OPT_RANGE,
1693                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1694                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1695                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1696                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1697                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1698                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1699                 .minval = 1,
1700                 .help   = "Set block size range (in more detail than bs)",
1701                 .parent = "rw",
1702                 .hide   = 1,
1703                 .interval = 4096,
1704                 .category = FIO_OPT_C_IO,
1705                 .group  = FIO_OPT_G_INVALID,
1706         },
1707         {
1708                 .name   = "bssplit",
1709                 .lname  = "Block size split",
1710                 .type   = FIO_OPT_STR,
1711                 .cb     = str_bssplit_cb,
1712                 .off1   = td_var_offset(bssplit),
1713                 .help   = "Set a specific mix of block sizes",
1714                 .parent = "rw",
1715                 .hide   = 1,
1716                 .category = FIO_OPT_C_IO,
1717                 .group  = FIO_OPT_G_INVALID,
1718         },
1719         {
1720                 .name   = "bs_unaligned",
1721                 .lname  = "Block size unaligned",
1722                 .alias  = "blocksize_unaligned",
1723                 .type   = FIO_OPT_STR_SET,
1724                 .off1   = td_var_offset(bs_unaligned),
1725                 .help   = "Don't sector align IO buffer sizes",
1726                 .parent = "rw",
1727                 .hide   = 1,
1728                 .category = FIO_OPT_C_IO,
1729                 .group  = FIO_OPT_G_INVALID,
1730         },
1731         {
1732                 .name   = "bs_is_seq_rand",
1733                 .lname  = "Block size division is seq/random (not read/write)",
1734                 .type   = FIO_OPT_BOOL,
1735                 .off1   = td_var_offset(bs_is_seq_rand),
1736                 .help   = "Consider any blocksize setting to be sequential,random",
1737                 .def    = "0",
1738                 .parent = "blocksize",
1739                 .category = FIO_OPT_C_IO,
1740                 .group  = FIO_OPT_G_INVALID,
1741         },
1742         {
1743                 .name   = "randrepeat",
1744                 .lname  = "Random repeatable",
1745                 .type   = FIO_OPT_BOOL,
1746                 .off1   = td_var_offset(rand_repeatable),
1747                 .help   = "Use repeatable random IO pattern",
1748                 .def    = "1",
1749                 .parent = "rw",
1750                 .hide   = 1,
1751                 .category = FIO_OPT_C_IO,
1752                 .group  = FIO_OPT_G_RANDOM,
1753         },
1754         {
1755                 .name   = "randseed",
1756                 .lname  = "The random generator seed",
1757                 .type   = FIO_OPT_STR_VAL,
1758                 .off1   = td_var_offset(rand_seed),
1759                 .help   = "Set the random generator seed value",
1760                 .def    = "0x89",
1761                 .parent = "rw",
1762                 .category = FIO_OPT_C_IO,
1763                 .group  = FIO_OPT_G_RANDOM,
1764         },
1765         {
1766                 .name   = "use_os_rand",
1767                 .lname  = "Use OS random",
1768                 .type   = FIO_OPT_DEPRECATED,
1769                 .off1   = td_var_offset(dep_use_os_rand),
1770                 .category = FIO_OPT_C_IO,
1771                 .group  = FIO_OPT_G_RANDOM,
1772         },
1773         {
1774                 .name   = "norandommap",
1775                 .lname  = "No randommap",
1776                 .type   = FIO_OPT_STR_SET,
1777                 .off1   = td_var_offset(norandommap),
1778                 .help   = "Accept potential duplicate random blocks",
1779                 .parent = "rw",
1780                 .hide   = 1,
1781                 .hide_on_set = 1,
1782                 .category = FIO_OPT_C_IO,
1783                 .group  = FIO_OPT_G_RANDOM,
1784         },
1785         {
1786                 .name   = "softrandommap",
1787                 .lname  = "Soft randommap",
1788                 .type   = FIO_OPT_BOOL,
1789                 .off1   = td_var_offset(softrandommap),
1790                 .help   = "Set norandommap if randommap allocation fails",
1791                 .parent = "norandommap",
1792                 .hide   = 1,
1793                 .def    = "0",
1794                 .category = FIO_OPT_C_IO,
1795                 .group  = FIO_OPT_G_RANDOM,
1796         },
1797         {
1798                 .name   = "random_generator",
1799                 .type   = FIO_OPT_STR,
1800                 .off1   = td_var_offset(random_generator),
1801                 .help   = "Type of random number generator to use",
1802                 .def    = "tausworthe",
1803                 .posval = {
1804                           { .ival = "tausworthe",
1805                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1806                             .help = "Strong Tausworthe generator",
1807                           },
1808                           { .ival = "lfsr",
1809                             .oval = FIO_RAND_GEN_LFSR,
1810                             .help = "Variable length LFSR",
1811                           },
1812                           {
1813                             .ival = "tausworthe64",
1814                             .oval = FIO_RAND_GEN_TAUSWORTHE64,
1815                             .help = "64-bit Tausworthe variant",
1816                           },
1817                 },
1818                 .category = FIO_OPT_C_IO,
1819                 .group  = FIO_OPT_G_RANDOM,
1820         },
1821         {
1822                 .name   = "random_distribution",
1823                 .type   = FIO_OPT_STR,
1824                 .off1   = td_var_offset(random_distribution),
1825                 .cb     = str_random_distribution_cb,
1826                 .help   = "Random offset distribution generator",
1827                 .def    = "random",
1828                 .posval = {
1829                           { .ival = "random",
1830                             .oval = FIO_RAND_DIST_RANDOM,
1831                             .help = "Completely random",
1832                           },
1833                           { .ival = "zipf",
1834                             .oval = FIO_RAND_DIST_ZIPF,
1835                             .help = "Zipf distribution",
1836                           },
1837                           { .ival = "pareto",
1838                             .oval = FIO_RAND_DIST_PARETO,
1839                             .help = "Pareto distribution",
1840                           },
1841                           { .ival = "normal",
1842                             .oval = FIO_RAND_DIST_GAUSS,
1843                             .help = "Normal (gaussian) distribution",
1844                           },
1845                 },
1846                 .category = FIO_OPT_C_IO,
1847                 .group  = FIO_OPT_G_RANDOM,
1848         },
1849         {
1850                 .name   = "percentage_random",
1851                 .lname  = "Percentage Random",
1852                 .type   = FIO_OPT_INT,
1853                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1854                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1855                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1856                 .maxval = 100,
1857                 .help   = "Percentage of seq/random mix that should be random",
1858                 .def    = "100,100,100",
1859                 .interval = 5,
1860                 .inverse = "percentage_sequential",
1861                 .category = FIO_OPT_C_IO,
1862                 .group  = FIO_OPT_G_RANDOM,
1863         },
1864         {
1865                 .name   = "percentage_sequential",
1866                 .lname  = "Percentage Sequential",
1867                 .type   = FIO_OPT_DEPRECATED,
1868                 .category = FIO_OPT_C_IO,
1869                 .group  = FIO_OPT_G_RANDOM,
1870         },
1871         {
1872                 .name   = "allrandrepeat",
1873                 .type   = FIO_OPT_BOOL,
1874                 .off1   = td_var_offset(allrand_repeatable),
1875                 .help   = "Use repeatable random numbers for everything",
1876                 .def    = "0",
1877                 .category = FIO_OPT_C_IO,
1878                 .group  = FIO_OPT_G_RANDOM,
1879         },
1880         {
1881                 .name   = "nrfiles",
1882                 .lname  = "Number of files",
1883                 .alias  = "nr_files",
1884                 .type   = FIO_OPT_INT,
1885                 .off1   = td_var_offset(nr_files),
1886                 .help   = "Split job workload between this number of files",
1887                 .def    = "1",
1888                 .interval = 1,
1889                 .category = FIO_OPT_C_FILE,
1890                 .group  = FIO_OPT_G_INVALID,
1891         },
1892         {
1893                 .name   = "openfiles",
1894                 .lname  = "Number of open files",
1895                 .type   = FIO_OPT_INT,
1896                 .off1   = td_var_offset(open_files),
1897                 .help   = "Number of files to keep open at the same time",
1898                 .category = FIO_OPT_C_FILE,
1899                 .group  = FIO_OPT_G_INVALID,
1900         },
1901         {
1902                 .name   = "file_service_type",
1903                 .lname  = "File service type",
1904                 .type   = FIO_OPT_STR,
1905                 .cb     = str_fst_cb,
1906                 .off1   = td_var_offset(file_service_type),
1907                 .help   = "How to select which file to service next",
1908                 .def    = "roundrobin",
1909                 .category = FIO_OPT_C_FILE,
1910                 .group  = FIO_OPT_G_INVALID,
1911                 .posval = {
1912                           { .ival = "random",
1913                             .oval = FIO_FSERVICE_RANDOM,
1914                             .help = "Choose a file at random",
1915                           },
1916                           { .ival = "roundrobin",
1917                             .oval = FIO_FSERVICE_RR,
1918                             .help = "Round robin select files",
1919                           },
1920                           { .ival = "sequential",
1921                             .oval = FIO_FSERVICE_SEQ,
1922                             .help = "Finish one file before moving to the next",
1923                           },
1924                 },
1925                 .parent = "nrfiles",
1926                 .hide   = 1,
1927         },
1928 #ifdef CONFIG_POSIX_FALLOCATE
1929         {
1930                 .name   = "fallocate",
1931                 .lname  = "Fallocate",
1932                 .type   = FIO_OPT_STR,
1933                 .off1   = td_var_offset(fallocate_mode),
1934                 .help   = "Whether pre-allocation is performed when laying out files",
1935                 .def    = "posix",
1936                 .category = FIO_OPT_C_FILE,
1937                 .group  = FIO_OPT_G_INVALID,
1938                 .posval = {
1939                           { .ival = "none",
1940                             .oval = FIO_FALLOCATE_NONE,
1941                             .help = "Do not pre-allocate space",
1942                           },
1943                           { .ival = "posix",
1944                             .oval = FIO_FALLOCATE_POSIX,
1945                             .help = "Use posix_fallocate()",
1946                           },
1947 #ifdef CONFIG_LINUX_FALLOCATE
1948                           { .ival = "keep",
1949                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1950                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1951                           },
1952 #endif
1953                           /* Compatibility with former boolean values */
1954                           { .ival = "0",
1955                             .oval = FIO_FALLOCATE_NONE,
1956                             .help = "Alias for 'none'",
1957                           },
1958                           { .ival = "1",
1959                             .oval = FIO_FALLOCATE_POSIX,
1960                             .help = "Alias for 'posix'",
1961                           },
1962                 },
1963         },
1964 #endif  /* CONFIG_POSIX_FALLOCATE */
1965         {
1966                 .name   = "fadvise_hint",
1967                 .lname  = "Fadvise hint",
1968                 .type   = FIO_OPT_BOOL,
1969                 .off1   = td_var_offset(fadvise_hint),
1970                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1971                 .def    = "1",
1972                 .category = FIO_OPT_C_FILE,
1973                 .group  = FIO_OPT_G_INVALID,
1974         },
1975 #ifdef FIO_HAVE_STREAMID
1976         {
1977                 .name   = "fadvise_stream",
1978                 .lname  = "Fadvise stream",
1979                 .type   = FIO_OPT_INT,
1980                 .off1   = td_var_offset(fadvise_stream),
1981                 .help   = "Use fadvise() to set stream ID",
1982                 .category = FIO_OPT_C_FILE,
1983                 .group  = FIO_OPT_G_INVALID,
1984         },
1985 #endif
1986         {
1987                 .name   = "fsync",
1988                 .lname  = "Fsync",
1989                 .type   = FIO_OPT_INT,
1990                 .off1   = td_var_offset(fsync_blocks),
1991                 .help   = "Issue fsync for writes every given number of blocks",
1992                 .def    = "0",
1993                 .interval = 1,
1994                 .category = FIO_OPT_C_FILE,
1995                 .group  = FIO_OPT_G_INVALID,
1996         },
1997         {
1998                 .name   = "fdatasync",
1999                 .lname  = "Fdatasync",
2000                 .type   = FIO_OPT_INT,
2001                 .off1   = td_var_offset(fdatasync_blocks),
2002                 .help   = "Issue fdatasync for writes every given number of blocks",
2003                 .def    = "0",
2004                 .interval = 1,
2005                 .category = FIO_OPT_C_FILE,
2006                 .group  = FIO_OPT_G_INVALID,
2007         },
2008         {
2009                 .name   = "write_barrier",
2010                 .lname  = "Write barrier",
2011                 .type   = FIO_OPT_INT,
2012                 .off1   = td_var_offset(barrier_blocks),
2013                 .help   = "Make every Nth write a barrier write",
2014                 .def    = "0",
2015                 .interval = 1,
2016                 .category = FIO_OPT_C_IO,
2017                 .group  = FIO_OPT_G_INVALID,
2018         },
2019 #ifdef CONFIG_SYNC_FILE_RANGE
2020         {
2021                 .name   = "sync_file_range",
2022                 .lname  = "Sync file range",
2023                 .posval = {
2024                           { .ival = "wait_before",
2025                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2026                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2027                             .orval  = 1,
2028                           },
2029                           { .ival = "write",
2030                             .oval = SYNC_FILE_RANGE_WRITE,
2031                             .help = "SYNC_FILE_RANGE_WRITE",
2032                             .orval  = 1,
2033                           },
2034                           {
2035                             .ival = "wait_after",
2036                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2037                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2038                             .orval  = 1,
2039                           },
2040                 },
2041                 .type   = FIO_OPT_STR_MULTI,
2042                 .cb     = str_sfr_cb,
2043                 .off1   = td_var_offset(sync_file_range),
2044                 .help   = "Use sync_file_range()",
2045                 .category = FIO_OPT_C_FILE,
2046                 .group  = FIO_OPT_G_INVALID,
2047         },
2048 #endif
2049         {
2050                 .name   = "direct",
2051                 .lname  = "Direct I/O",
2052                 .type   = FIO_OPT_BOOL,
2053                 .off1   = td_var_offset(odirect),
2054                 .help   = "Use O_DIRECT IO (negates buffered)",
2055                 .def    = "0",
2056                 .inverse = "buffered",
2057                 .category = FIO_OPT_C_IO,
2058                 .group  = FIO_OPT_G_IO_TYPE,
2059         },
2060         {
2061                 .name   = "atomic",
2062                 .lname  = "Atomic I/O",
2063                 .type   = FIO_OPT_BOOL,
2064                 .off1   = td_var_offset(oatomic),
2065                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2066                 .def    = "0",
2067                 .category = FIO_OPT_C_IO,
2068                 .group  = FIO_OPT_G_IO_TYPE,
2069         },
2070         {
2071                 .name   = "buffered",
2072                 .lname  = "Buffered I/O",
2073                 .type   = FIO_OPT_BOOL,
2074                 .off1   = td_var_offset(odirect),
2075                 .neg    = 1,
2076                 .help   = "Use buffered IO (negates direct)",
2077                 .def    = "1",
2078                 .inverse = "direct",
2079                 .category = FIO_OPT_C_IO,
2080                 .group  = FIO_OPT_G_IO_TYPE,
2081         },
2082         {
2083                 .name   = "overwrite",
2084                 .lname  = "Overwrite",
2085                 .type   = FIO_OPT_BOOL,
2086                 .off1   = td_var_offset(overwrite),
2087                 .help   = "When writing, set whether to overwrite current data",
2088                 .def    = "0",
2089                 .category = FIO_OPT_C_FILE,
2090                 .group  = FIO_OPT_G_INVALID,
2091         },
2092         {
2093                 .name   = "loops",
2094                 .lname  = "Loops",
2095                 .type   = FIO_OPT_INT,
2096                 .off1   = td_var_offset(loops),
2097                 .help   = "Number of times to run the job",
2098                 .def    = "1",
2099                 .interval = 1,
2100                 .category = FIO_OPT_C_GENERAL,
2101                 .group  = FIO_OPT_G_RUNTIME,
2102         },
2103         {
2104                 .name   = "numjobs",
2105                 .lname  = "Number of jobs",
2106                 .type   = FIO_OPT_INT,
2107                 .off1   = td_var_offset(numjobs),
2108                 .help   = "Duplicate this job this many times",
2109                 .def    = "1",
2110                 .interval = 1,
2111                 .category = FIO_OPT_C_GENERAL,
2112                 .group  = FIO_OPT_G_RUNTIME,
2113         },
2114         {
2115                 .name   = "startdelay",
2116                 .lname  = "Start delay",
2117                 .type   = FIO_OPT_STR_VAL_TIME,
2118                 .off1   = td_var_offset(start_delay),
2119                 .off2   = td_var_offset(start_delay_high),
2120                 .help   = "Only start job when this period has passed",
2121                 .def    = "0",
2122                 .is_seconds = 1,
2123                 .is_time = 1,
2124                 .category = FIO_OPT_C_GENERAL,
2125                 .group  = FIO_OPT_G_RUNTIME,
2126         },
2127         {
2128                 .name   = "runtime",
2129                 .lname  = "Runtime",
2130                 .alias  = "timeout",
2131                 .type   = FIO_OPT_STR_VAL_TIME,
2132                 .off1   = td_var_offset(timeout),
2133                 .help   = "Stop workload when this amount of time has passed",
2134                 .def    = "0",
2135                 .is_seconds = 1,
2136                 .is_time = 1,
2137                 .category = FIO_OPT_C_GENERAL,
2138                 .group  = FIO_OPT_G_RUNTIME,
2139         },
2140         {
2141                 .name   = "time_based",
2142                 .lname  = "Time based",
2143                 .type   = FIO_OPT_STR_SET,
2144                 .off1   = td_var_offset(time_based),
2145                 .help   = "Keep running until runtime/timeout is met",
2146                 .category = FIO_OPT_C_GENERAL,
2147                 .group  = FIO_OPT_G_RUNTIME,
2148         },
2149         {
2150                 .name   = "verify_only",
2151                 .lname  = "Verify only",
2152                 .type   = FIO_OPT_STR_SET,
2153                 .off1   = td_var_offset(verify_only),
2154                 .help   = "Verifies previously written data is still valid",
2155                 .category = FIO_OPT_C_GENERAL,
2156                 .group  = FIO_OPT_G_RUNTIME,
2157         },
2158         {
2159                 .name   = "ramp_time",
2160                 .lname  = "Ramp time",
2161                 .type   = FIO_OPT_STR_VAL_TIME,
2162                 .off1   = td_var_offset(ramp_time),
2163                 .help   = "Ramp up time before measuring performance",
2164                 .is_seconds = 1,
2165                 .is_time = 1,
2166                 .category = FIO_OPT_C_GENERAL,
2167                 .group  = FIO_OPT_G_RUNTIME,
2168         },
2169         {
2170                 .name   = "clocksource",
2171                 .lname  = "Clock source",
2172                 .type   = FIO_OPT_STR,
2173                 .cb     = fio_clock_source_cb,
2174                 .off1   = td_var_offset(clocksource),
2175                 .help   = "What type of timing source to use",
2176                 .category = FIO_OPT_C_GENERAL,
2177                 .group  = FIO_OPT_G_CLOCK,
2178                 .posval = {
2179 #ifdef CONFIG_GETTIMEOFDAY
2180                           { .ival = "gettimeofday",
2181                             .oval = CS_GTOD,
2182                             .help = "Use gettimeofday(2) for timing",
2183                           },
2184 #endif
2185 #ifdef CONFIG_CLOCK_GETTIME
2186                           { .ival = "clock_gettime",
2187                             .oval = CS_CGETTIME,
2188                             .help = "Use clock_gettime(2) for timing",
2189                           },
2190 #endif
2191 #ifdef ARCH_HAVE_CPU_CLOCK
2192                           { .ival = "cpu",
2193                             .oval = CS_CPUCLOCK,
2194                             .help = "Use CPU private clock",
2195                           },
2196 #endif
2197                 },
2198         },
2199         {
2200                 .name   = "mem",
2201                 .alias  = "iomem",
2202                 .lname  = "I/O Memory",
2203                 .type   = FIO_OPT_STR,
2204                 .cb     = str_mem_cb,
2205                 .off1   = td_var_offset(mem_type),
2206                 .help   = "Backing type for IO buffers",
2207                 .def    = "malloc",
2208                 .category = FIO_OPT_C_IO,
2209                 .group  = FIO_OPT_G_INVALID,
2210                 .posval = {
2211                           { .ival = "malloc",
2212                             .oval = MEM_MALLOC,
2213                             .help = "Use malloc(3) for IO buffers",
2214                           },
2215 #ifndef CONFIG_NO_SHM
2216                           { .ival = "shm",
2217                             .oval = MEM_SHM,
2218                             .help = "Use shared memory segments for IO buffers",
2219                           },
2220 #ifdef FIO_HAVE_HUGETLB
2221                           { .ival = "shmhuge",
2222                             .oval = MEM_SHMHUGE,
2223                             .help = "Like shm, but use huge pages",
2224                           },
2225 #endif
2226 #endif
2227                           { .ival = "mmap",
2228                             .oval = MEM_MMAP,
2229                             .help = "Use mmap(2) (file or anon) for IO buffers",
2230                           },
2231 #ifdef FIO_HAVE_HUGETLB
2232                           { .ival = "mmaphuge",
2233                             .oval = MEM_MMAPHUGE,
2234                             .help = "Like mmap, but use huge pages",
2235                           },
2236 #endif
2237                   },
2238         },
2239         {
2240                 .name   = "iomem_align",
2241                 .alias  = "mem_align",
2242                 .lname  = "I/O memory alignment",
2243                 .type   = FIO_OPT_INT,
2244                 .off1   = td_var_offset(mem_align),
2245                 .minval = 0,
2246                 .help   = "IO memory buffer offset alignment",
2247                 .def    = "0",
2248                 .parent = "iomem",
2249                 .hide   = 1,
2250                 .category = FIO_OPT_C_IO,
2251                 .group  = FIO_OPT_G_INVALID,
2252         },
2253         {
2254                 .name   = "verify",
2255                 .lname  = "Verify",
2256                 .type   = FIO_OPT_STR,
2257                 .off1   = td_var_offset(verify),
2258                 .help   = "Verify data written",
2259                 .def    = "0",
2260                 .category = FIO_OPT_C_IO,
2261                 .group  = FIO_OPT_G_VERIFY,
2262                 .posval = {
2263                           { .ival = "0",
2264                             .oval = VERIFY_NONE,
2265                             .help = "Don't do IO verification",
2266                           },
2267                           { .ival = "md5",
2268                             .oval = VERIFY_MD5,
2269                             .help = "Use md5 checksums for verification",
2270                           },
2271                           { .ival = "crc64",
2272                             .oval = VERIFY_CRC64,
2273                             .help = "Use crc64 checksums for verification",
2274                           },
2275                           { .ival = "crc32",
2276                             .oval = VERIFY_CRC32,
2277                             .help = "Use crc32 checksums for verification",
2278                           },
2279                           { .ival = "crc32c-intel",
2280                             .oval = VERIFY_CRC32C,
2281                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2282                           },
2283                           { .ival = "crc32c",
2284                             .oval = VERIFY_CRC32C,
2285                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2286                           },
2287                           { .ival = "crc16",
2288                             .oval = VERIFY_CRC16,
2289                             .help = "Use crc16 checksums for verification",
2290                           },
2291                           { .ival = "crc7",
2292                             .oval = VERIFY_CRC7,
2293                             .help = "Use crc7 checksums for verification",
2294                           },
2295                           { .ival = "sha1",
2296                             .oval = VERIFY_SHA1,
2297                             .help = "Use sha1 checksums for verification",
2298                           },
2299                           { .ival = "sha256",
2300                             .oval = VERIFY_SHA256,
2301                             .help = "Use sha256 checksums for verification",
2302                           },
2303                           { .ival = "sha512",
2304                             .oval = VERIFY_SHA512,
2305                             .help = "Use sha512 checksums for verification",
2306                           },
2307                           { .ival = "xxhash",
2308                             .oval = VERIFY_XXHASH,
2309                             .help = "Use xxhash checksums for verification",
2310                           },
2311                           /* Meta information was included into verify_header,
2312                            * 'meta' verification is implied by default. */
2313                           { .ival = "meta",
2314                             .oval = VERIFY_HDR_ONLY,
2315                             .help = "Use io information for verification. "
2316                                     "Now is implied by default, thus option is obsolete, "
2317                                     "don't use it",
2318                           },
2319                           { .ival = "pattern",
2320                             .oval = VERIFY_PATTERN_NO_HDR,
2321                             .help = "Verify strict pattern",
2322                           },
2323                           {
2324                             .ival = "null",
2325                             .oval = VERIFY_NULL,
2326                             .help = "Pretend to verify",
2327                           },
2328                 },
2329         },
2330         {
2331                 .name   = "do_verify",
2332                 .lname  = "Perform verify step",
2333                 .type   = FIO_OPT_BOOL,
2334                 .off1   = td_var_offset(do_verify),
2335                 .help   = "Run verification stage after write",
2336                 .def    = "1",
2337                 .parent = "verify",
2338                 .hide   = 1,
2339                 .category = FIO_OPT_C_IO,
2340                 .group  = FIO_OPT_G_VERIFY,
2341         },
2342         {
2343                 .name   = "verifysort",
2344                 .lname  = "Verify sort",
2345                 .type   = FIO_OPT_BOOL,
2346                 .off1   = td_var_offset(verifysort),
2347                 .help   = "Sort written verify blocks for read back",
2348                 .def    = "1",
2349                 .parent = "verify",
2350                 .hide   = 1,
2351                 .category = FIO_OPT_C_IO,
2352                 .group  = FIO_OPT_G_VERIFY,
2353         },
2354         {
2355                 .name   = "verifysort_nr",
2356                 .type   = FIO_OPT_INT,
2357                 .off1   = td_var_offset(verifysort_nr),
2358                 .help   = "Pre-load and sort verify blocks for a read workload",
2359                 .minval = 0,
2360                 .maxval = 131072,
2361                 .def    = "1024",
2362                 .parent = "verify",
2363                 .category = FIO_OPT_C_IO,
2364                 .group  = FIO_OPT_G_VERIFY,
2365         },
2366         {
2367                 .name   = "verify_interval",
2368                 .lname  = "Verify interval",
2369                 .type   = FIO_OPT_INT,
2370                 .off1   = td_var_offset(verify_interval),
2371                 .minval = 2 * sizeof(struct verify_header),
2372                 .help   = "Store verify buffer header every N bytes",
2373                 .parent = "verify",
2374                 .hide   = 1,
2375                 .interval = 2 * sizeof(struct verify_header),
2376                 .category = FIO_OPT_C_IO,
2377                 .group  = FIO_OPT_G_VERIFY,
2378         },
2379         {
2380                 .name   = "verify_offset",
2381                 .lname  = "Verify offset",
2382                 .type   = FIO_OPT_INT,
2383                 .help   = "Offset verify header location by N bytes",
2384                 .off1   = td_var_offset(verify_offset),
2385                 .minval = sizeof(struct verify_header),
2386                 .parent = "verify",
2387                 .hide   = 1,
2388                 .category = FIO_OPT_C_IO,
2389                 .group  = FIO_OPT_G_VERIFY,
2390         },
2391         {
2392                 .name   = "verify_pattern",
2393                 .lname  = "Verify pattern",
2394                 .type   = FIO_OPT_STR,
2395                 .cb     = str_verify_pattern_cb,
2396                 .off1   = td_var_offset(verify_pattern),
2397                 .help   = "Fill pattern for IO buffers",
2398                 .parent = "verify",
2399                 .hide   = 1,
2400                 .category = FIO_OPT_C_IO,
2401                 .group  = FIO_OPT_G_VERIFY,
2402         },
2403         {
2404                 .name   = "verify_fatal",
2405                 .lname  = "Verify fatal",
2406                 .type   = FIO_OPT_BOOL,
2407                 .off1   = td_var_offset(verify_fatal),
2408                 .def    = "0",
2409                 .help   = "Exit on a single verify failure, don't continue",
2410                 .parent = "verify",
2411                 .hide   = 1,
2412                 .category = FIO_OPT_C_IO,
2413                 .group  = FIO_OPT_G_VERIFY,
2414         },
2415         {
2416                 .name   = "verify_dump",
2417                 .lname  = "Verify dump",
2418                 .type   = FIO_OPT_BOOL,
2419                 .off1   = td_var_offset(verify_dump),
2420                 .def    = "0",
2421                 .help   = "Dump contents of good and bad blocks on failure",
2422                 .parent = "verify",
2423                 .hide   = 1,
2424                 .category = FIO_OPT_C_IO,
2425                 .group  = FIO_OPT_G_VERIFY,
2426         },
2427         {
2428                 .name   = "verify_async",
2429                 .lname  = "Verify asynchronously",
2430                 .type   = FIO_OPT_INT,
2431                 .off1   = td_var_offset(verify_async),
2432                 .def    = "0",
2433                 .help   = "Number of async verifier threads to use",
2434                 .parent = "verify",
2435                 .hide   = 1,
2436                 .category = FIO_OPT_C_IO,
2437                 .group  = FIO_OPT_G_VERIFY,
2438         },
2439         {
2440                 .name   = "verify_backlog",
2441                 .lname  = "Verify backlog",
2442                 .type   = FIO_OPT_STR_VAL,
2443                 .off1   = td_var_offset(verify_backlog),
2444                 .help   = "Verify after this number of blocks are written",
2445                 .parent = "verify",
2446                 .hide   = 1,
2447                 .category = FIO_OPT_C_IO,
2448                 .group  = FIO_OPT_G_VERIFY,
2449         },
2450         {
2451                 .name   = "verify_backlog_batch",
2452                 .lname  = "Verify backlog batch",
2453                 .type   = FIO_OPT_INT,
2454                 .off1   = td_var_offset(verify_batch),
2455                 .help   = "Verify this number of IO blocks",
2456                 .parent = "verify",
2457                 .hide   = 1,
2458                 .category = FIO_OPT_C_IO,
2459                 .group  = FIO_OPT_G_VERIFY,
2460         },
2461 #ifdef FIO_HAVE_CPU_AFFINITY
2462         {
2463                 .name   = "verify_async_cpus",
2464                 .lname  = "Async verify CPUs",
2465                 .type   = FIO_OPT_STR,
2466                 .cb     = str_verify_cpus_allowed_cb,
2467                 .off1   = td_var_offset(verify_cpumask),
2468                 .help   = "Set CPUs allowed for async verify threads",
2469                 .parent = "verify_async",
2470                 .hide   = 1,
2471                 .category = FIO_OPT_C_IO,
2472                 .group  = FIO_OPT_G_VERIFY,
2473         },
2474 #endif
2475         {
2476                 .name   = "experimental_verify",
2477                 .off1   = td_var_offset(experimental_verify),
2478                 .type   = FIO_OPT_BOOL,
2479                 .help   = "Enable experimental verification",
2480                 .parent = "verify",
2481                 .category = FIO_OPT_C_IO,
2482                 .group  = FIO_OPT_G_VERIFY,
2483         },
2484         {
2485                 .name   = "verify_state_load",
2486                 .lname  = "Load verify state",
2487                 .off1   = td_var_offset(verify_state),
2488                 .type   = FIO_OPT_BOOL,
2489                 .help   = "Load verify termination state",
2490                 .parent = "verify",
2491                 .category = FIO_OPT_C_IO,
2492                 .group  = FIO_OPT_G_VERIFY,
2493         },
2494         {
2495                 .name   = "verify_state_save",
2496                 .lname  = "Save verify state",
2497                 .off1   = td_var_offset(verify_state_save),
2498                 .type   = FIO_OPT_BOOL,
2499                 .def    = "1",
2500                 .help   = "Save verify state on termination",
2501                 .parent = "verify",
2502                 .category = FIO_OPT_C_IO,
2503                 .group  = FIO_OPT_G_VERIFY,
2504         },
2505 #ifdef FIO_HAVE_TRIM
2506         {
2507                 .name   = "trim_percentage",
2508                 .lname  = "Trim percentage",
2509                 .type   = FIO_OPT_INT,
2510                 .off1   = td_var_offset(trim_percentage),
2511                 .minval = 0,
2512                 .maxval = 100,
2513                 .help   = "Number of verify blocks to discard/trim",
2514                 .parent = "verify",
2515                 .def    = "0",
2516                 .interval = 1,
2517                 .hide   = 1,
2518                 .category = FIO_OPT_C_IO,
2519                 .group  = FIO_OPT_G_TRIM,
2520         },
2521         {
2522                 .name   = "trim_verify_zero",
2523                 .lname  = "Verify trim zero",
2524                 .type   = FIO_OPT_BOOL,
2525                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2526                 .off1   = td_var_offset(trim_zero),
2527                 .parent = "trim_percentage",
2528                 .hide   = 1,
2529                 .def    = "1",
2530                 .category = FIO_OPT_C_IO,
2531                 .group  = FIO_OPT_G_TRIM,
2532         },
2533         {
2534                 .name   = "trim_backlog",
2535                 .lname  = "Trim backlog",
2536                 .type   = FIO_OPT_STR_VAL,
2537                 .off1   = td_var_offset(trim_backlog),
2538                 .help   = "Trim after this number of blocks are written",
2539                 .parent = "trim_percentage",
2540                 .hide   = 1,
2541                 .interval = 1,
2542                 .category = FIO_OPT_C_IO,
2543                 .group  = FIO_OPT_G_TRIM,
2544         },
2545         {
2546                 .name   = "trim_backlog_batch",
2547                 .lname  = "Trim backlog batch",
2548                 .type   = FIO_OPT_INT,
2549                 .off1   = td_var_offset(trim_batch),
2550                 .help   = "Trim this number of IO blocks",
2551                 .parent = "trim_percentage",
2552                 .hide   = 1,
2553                 .interval = 1,
2554                 .category = FIO_OPT_C_IO,
2555                 .group  = FIO_OPT_G_TRIM,
2556         },
2557 #endif
2558         {
2559                 .name   = "write_iolog",
2560                 .lname  = "Write I/O log",
2561                 .type   = FIO_OPT_STR_STORE,
2562                 .off1   = td_var_offset(write_iolog_file),
2563                 .help   = "Store IO pattern to file",
2564                 .category = FIO_OPT_C_IO,
2565                 .group  = FIO_OPT_G_IOLOG,
2566         },
2567         {
2568                 .name   = "read_iolog",
2569                 .lname  = "Read I/O log",
2570                 .type   = FIO_OPT_STR_STORE,
2571                 .off1   = td_var_offset(read_iolog_file),
2572                 .help   = "Playback IO pattern from file",
2573                 .category = FIO_OPT_C_IO,
2574                 .group  = FIO_OPT_G_IOLOG,
2575         },
2576         {
2577                 .name   = "replay_no_stall",
2578                 .lname  = "Don't stall on replay",
2579                 .type   = FIO_OPT_BOOL,
2580                 .off1   = td_var_offset(no_stall),
2581                 .def    = "0",
2582                 .parent = "read_iolog",
2583                 .hide   = 1,
2584                 .help   = "Playback IO pattern file as fast as possible without stalls",
2585                 .category = FIO_OPT_C_IO,
2586                 .group  = FIO_OPT_G_IOLOG,
2587         },
2588         {
2589                 .name   = "replay_redirect",
2590                 .lname  = "Redirect device for replay",
2591                 .type   = FIO_OPT_STR_STORE,
2592                 .off1   = td_var_offset(replay_redirect),
2593                 .parent = "read_iolog",
2594                 .hide   = 1,
2595                 .help   = "Replay all I/O onto this device, regardless of trace device",
2596                 .category = FIO_OPT_C_IO,
2597                 .group  = FIO_OPT_G_IOLOG,
2598         },
2599         {
2600                 .name   = "replay_scale",
2601                 .lname  = "Replace offset scale factor",
2602                 .type   = FIO_OPT_INT,
2603                 .off1   = td_var_offset(replay_scale),
2604                 .parent = "read_iolog",
2605                 .def    = "1",
2606                 .help   = "Align offsets to this blocksize",
2607                 .category = FIO_OPT_C_IO,
2608                 .group  = FIO_OPT_G_IOLOG,
2609         },
2610         {
2611                 .name   = "replay_align",
2612                 .lname  = "Replace alignment",
2613                 .type   = FIO_OPT_INT,
2614                 .off1   = td_var_offset(replay_align),
2615                 .parent = "read_iolog",
2616                 .help   = "Scale offset down by this factor",
2617                 .category = FIO_OPT_C_IO,
2618                 .group  = FIO_OPT_G_IOLOG,
2619                 .pow2   = 1,
2620         },
2621         {
2622                 .name   = "exec_prerun",
2623                 .lname  = "Pre-execute runnable",
2624                 .type   = FIO_OPT_STR_STORE,
2625                 .off1   = td_var_offset(exec_prerun),
2626                 .help   = "Execute this file prior to running job",
2627                 .category = FIO_OPT_C_GENERAL,
2628                 .group  = FIO_OPT_G_INVALID,
2629         },
2630         {
2631                 .name   = "exec_postrun",
2632                 .lname  = "Post-execute runnable",
2633                 .type   = FIO_OPT_STR_STORE,
2634                 .off1   = td_var_offset(exec_postrun),
2635                 .help   = "Execute this file after running job",
2636                 .category = FIO_OPT_C_GENERAL,
2637                 .group  = FIO_OPT_G_INVALID,
2638         },
2639 #ifdef FIO_HAVE_IOSCHED_SWITCH
2640         {
2641                 .name   = "ioscheduler",
2642                 .lname  = "I/O scheduler",
2643                 .type   = FIO_OPT_STR_STORE,
2644                 .off1   = td_var_offset(ioscheduler),
2645                 .help   = "Use this IO scheduler on the backing device",
2646                 .category = FIO_OPT_C_FILE,
2647                 .group  = FIO_OPT_G_INVALID,
2648         },
2649 #endif
2650         {
2651                 .name   = "zonesize",
2652                 .lname  = "Zone size",
2653                 .type   = FIO_OPT_STR_VAL,
2654                 .off1   = td_var_offset(zone_size),
2655                 .help   = "Amount of data to read per zone",
2656                 .def    = "0",
2657                 .interval = 1024 * 1024,
2658                 .category = FIO_OPT_C_IO,
2659                 .group  = FIO_OPT_G_ZONE,
2660         },
2661         {
2662                 .name   = "zonerange",
2663                 .lname  = "Zone range",
2664                 .type   = FIO_OPT_STR_VAL,
2665                 .off1   = td_var_offset(zone_range),
2666                 .help   = "Give size of an IO zone",
2667                 .def    = "0",
2668                 .interval = 1024 * 1024,
2669                 .category = FIO_OPT_C_IO,
2670                 .group  = FIO_OPT_G_ZONE,
2671         },
2672         {
2673                 .name   = "zoneskip",
2674                 .lname  = "Zone skip",
2675                 .type   = FIO_OPT_STR_VAL,
2676                 .off1   = td_var_offset(zone_skip),
2677                 .help   = "Space between IO zones",
2678                 .def    = "0",
2679                 .interval = 1024 * 1024,
2680                 .category = FIO_OPT_C_IO,
2681                 .group  = FIO_OPT_G_ZONE,
2682         },
2683         {
2684                 .name   = "lockmem",
2685                 .lname  = "Lock memory",
2686                 .type   = FIO_OPT_STR_VAL,
2687                 .off1   = td_var_offset(lockmem),
2688                 .help   = "Lock down this amount of memory (per worker)",
2689                 .def    = "0",
2690                 .interval = 1024 * 1024,
2691                 .category = FIO_OPT_C_GENERAL,
2692                 .group  = FIO_OPT_G_INVALID,
2693         },
2694         {
2695                 .name   = "rwmixread",
2696                 .lname  = "Read/write mix read",
2697                 .type   = FIO_OPT_INT,
2698                 .cb     = str_rwmix_read_cb,
2699                 .off1   = td_var_offset(rwmix[DDIR_READ]),
2700                 .maxval = 100,
2701                 .help   = "Percentage of mixed workload that is reads",
2702                 .def    = "50",
2703                 .interval = 5,
2704                 .inverse = "rwmixwrite",
2705                 .category = FIO_OPT_C_IO,
2706                 .group  = FIO_OPT_G_RWMIX,
2707         },
2708         {
2709                 .name   = "rwmixwrite",
2710                 .lname  = "Read/write mix write",
2711                 .type   = FIO_OPT_INT,
2712                 .cb     = str_rwmix_write_cb,
2713                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
2714                 .maxval = 100,
2715                 .help   = "Percentage of mixed workload that is writes",
2716                 .def    = "50",
2717                 .interval = 5,
2718                 .inverse = "rwmixread",
2719                 .category = FIO_OPT_C_IO,
2720                 .group  = FIO_OPT_G_RWMIX,
2721         },
2722         {
2723                 .name   = "rwmixcycle",
2724                 .lname  = "Read/write mix cycle",
2725                 .type   = FIO_OPT_DEPRECATED,
2726                 .category = FIO_OPT_C_IO,
2727                 .group  = FIO_OPT_G_RWMIX,
2728         },
2729         {
2730                 .name   = "nice",
2731                 .lname  = "Nice",
2732                 .type   = FIO_OPT_INT,
2733                 .off1   = td_var_offset(nice),
2734                 .help   = "Set job CPU nice value",
2735                 .minval = -19,
2736                 .maxval = 20,
2737                 .def    = "0",
2738                 .interval = 1,
2739                 .category = FIO_OPT_C_GENERAL,
2740                 .group  = FIO_OPT_G_CRED,
2741         },
2742 #ifdef FIO_HAVE_IOPRIO
2743         {
2744                 .name   = "prio",
2745                 .lname  = "I/O nice priority",
2746                 .type   = FIO_OPT_INT,
2747                 .off1   = td_var_offset(ioprio),
2748                 .help   = "Set job IO priority value",
2749                 .minval = 0,
2750                 .maxval = 7,
2751                 .interval = 1,
2752                 .category = FIO_OPT_C_GENERAL,
2753                 .group  = FIO_OPT_G_CRED,
2754         },
2755         {
2756                 .name   = "prioclass",
2757                 .lname  = "I/O nice priority class",
2758                 .type   = FIO_OPT_INT,
2759                 .off1   = td_var_offset(ioprio_class),
2760                 .help   = "Set job IO priority class",
2761                 .minval = 0,
2762                 .maxval = 3,
2763                 .interval = 1,
2764                 .category = FIO_OPT_C_GENERAL,
2765                 .group  = FIO_OPT_G_CRED,
2766         },
2767 #endif
2768         {
2769                 .name   = "thinktime",
2770                 .lname  = "Thinktime",
2771                 .type   = FIO_OPT_INT,
2772                 .off1   = td_var_offset(thinktime),
2773                 .help   = "Idle time between IO buffers (usec)",
2774                 .def    = "0",
2775                 .is_time = 1,
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                 .is_time = 1,
2787                 .parent = "thinktime",
2788                 .hide   = 1,
2789                 .category = FIO_OPT_C_IO,
2790                 .group  = FIO_OPT_G_THINKTIME,
2791         },
2792         {
2793                 .name   = "thinktime_blocks",
2794                 .lname  = "Thinktime blocks",
2795                 .type   = FIO_OPT_INT,
2796                 .off1   = td_var_offset(thinktime_blocks),
2797                 .help   = "IO buffer period between 'thinktime'",
2798                 .def    = "1",
2799                 .parent = "thinktime",
2800                 .hide   = 1,
2801                 .category = FIO_OPT_C_IO,
2802                 .group  = FIO_OPT_G_THINKTIME,
2803         },
2804         {
2805                 .name   = "rate",
2806                 .lname  = "I/O rate",
2807                 .type   = FIO_OPT_INT,
2808                 .off1   = td_var_offset(rate[DDIR_READ]),
2809                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2810                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2811                 .help   = "Set bandwidth rate",
2812                 .category = FIO_OPT_C_IO,
2813                 .group  = FIO_OPT_G_RATE,
2814         },
2815         {
2816                 .name   = "ratemin",
2817                 .lname  = "I/O min rate",
2818                 .type   = FIO_OPT_INT,
2819                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2820                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2821                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2822                 .help   = "Job must meet this rate or it will be shutdown",
2823                 .parent = "rate",
2824                 .hide   = 1,
2825                 .category = FIO_OPT_C_IO,
2826                 .group  = FIO_OPT_G_RATE,
2827         },
2828         {
2829                 .name   = "rate_iops",
2830                 .lname  = "I/O rate IOPS",
2831                 .type   = FIO_OPT_INT,
2832                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2833                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2834                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2835                 .help   = "Limit IO used to this number of IO operations/sec",
2836                 .hide   = 1,
2837                 .category = FIO_OPT_C_IO,
2838                 .group  = FIO_OPT_G_RATE,
2839         },
2840         {
2841                 .name   = "rate_iops_min",
2842                 .lname  = "I/O min rate IOPS",
2843                 .type   = FIO_OPT_INT,
2844                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2845                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2846                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2847                 .help   = "Job must meet this rate or it will be shut down",
2848                 .parent = "rate_iops",
2849                 .hide   = 1,
2850                 .category = FIO_OPT_C_IO,
2851                 .group  = FIO_OPT_G_RATE,
2852         },
2853         {
2854                 .name   = "ratecycle",
2855                 .lname  = "I/O rate cycle",
2856                 .type   = FIO_OPT_INT,
2857                 .off1   = td_var_offset(ratecycle),
2858                 .help   = "Window average for rate limits (msec)",
2859                 .def    = "1000",
2860                 .parent = "rate",
2861                 .hide   = 1,
2862                 .category = FIO_OPT_C_IO,
2863                 .group  = FIO_OPT_G_RATE,
2864         },
2865         {
2866                 .name   = "max_latency",
2867                 .type   = FIO_OPT_INT,
2868                 .off1   = td_var_offset(max_latency),
2869                 .help   = "Maximum tolerated IO latency (usec)",
2870                 .is_time = 1,
2871                 .category = FIO_OPT_C_IO,
2872                 .group = FIO_OPT_G_LATPROF,
2873         },
2874         {
2875                 .name   = "latency_target",
2876                 .lname  = "Latency Target (usec)",
2877                 .type   = FIO_OPT_STR_VAL_TIME,
2878                 .off1   = td_var_offset(latency_target),
2879                 .help   = "Ramp to max queue depth supporting this latency",
2880                 .is_time = 1,
2881                 .category = FIO_OPT_C_IO,
2882                 .group  = FIO_OPT_G_LATPROF,
2883         },
2884         {
2885                 .name   = "latency_window",
2886                 .lname  = "Latency Window (usec)",
2887                 .type   = FIO_OPT_STR_VAL_TIME,
2888                 .off1   = td_var_offset(latency_window),
2889                 .help   = "Time to sustain latency_target",
2890                 .is_time = 1,
2891                 .category = FIO_OPT_C_IO,
2892                 .group  = FIO_OPT_G_LATPROF,
2893         },
2894         {
2895                 .name   = "latency_percentile",
2896                 .lname  = "Latency Percentile",
2897                 .type   = FIO_OPT_FLOAT_LIST,
2898                 .off1   = td_var_offset(latency_percentile),
2899                 .help   = "Percentile of IOs must be below latency_target",
2900                 .def    = "100",
2901                 .maxlen = 1,
2902                 .minfp  = 0.0,
2903                 .maxfp  = 100.0,
2904                 .category = FIO_OPT_C_IO,
2905                 .group  = FIO_OPT_G_LATPROF,
2906         },
2907         {
2908                 .name   = "invalidate",
2909                 .lname  = "Cache invalidate",
2910                 .type   = FIO_OPT_BOOL,
2911                 .off1   = td_var_offset(invalidate_cache),
2912                 .help   = "Invalidate buffer/page cache prior to running job",
2913                 .def    = "1",
2914                 .category = FIO_OPT_C_IO,
2915                 .group  = FIO_OPT_G_IO_TYPE,
2916         },
2917         {
2918                 .name   = "sync",
2919                 .lname  = "Synchronous I/O",
2920                 .type   = FIO_OPT_BOOL,
2921                 .off1   = td_var_offset(sync_io),
2922                 .help   = "Use O_SYNC for buffered writes",
2923                 .def    = "0",
2924                 .parent = "buffered",
2925                 .hide   = 1,
2926                 .category = FIO_OPT_C_IO,
2927                 .group  = FIO_OPT_G_IO_TYPE,
2928         },
2929         {
2930                 .name   = "create_serialize",
2931                 .lname  = "Create serialize",
2932                 .type   = FIO_OPT_BOOL,
2933                 .off1   = td_var_offset(create_serialize),
2934                 .help   = "Serialize creating of job files",
2935                 .def    = "1",
2936                 .category = FIO_OPT_C_FILE,
2937                 .group  = FIO_OPT_G_INVALID,
2938         },
2939         {
2940                 .name   = "create_fsync",
2941                 .lname  = "Create fsync",
2942                 .type   = FIO_OPT_BOOL,
2943                 .off1   = td_var_offset(create_fsync),
2944                 .help   = "fsync file after creation",
2945                 .def    = "1",
2946                 .category = FIO_OPT_C_FILE,
2947                 .group  = FIO_OPT_G_INVALID,
2948         },
2949         {
2950                 .name   = "create_on_open",
2951                 .lname  = "Create on open",
2952                 .type   = FIO_OPT_BOOL,
2953                 .off1   = td_var_offset(create_on_open),
2954                 .help   = "Create files when they are opened for IO",
2955                 .def    = "0",
2956                 .category = FIO_OPT_C_FILE,
2957                 .group  = FIO_OPT_G_INVALID,
2958         },
2959         {
2960                 .name   = "create_only",
2961                 .type   = FIO_OPT_BOOL,
2962                 .off1   = td_var_offset(create_only),
2963                 .help   = "Only perform file creation phase",
2964                 .category = FIO_OPT_C_FILE,
2965                 .def    = "0",
2966         },
2967         {
2968                 .name   = "allow_file_create",
2969                 .lname  = "Allow file create",
2970                 .type   = FIO_OPT_BOOL,
2971                 .off1   = td_var_offset(allow_create),
2972                 .help   = "Permit fio to create files, if they don't exist",
2973                 .def    = "1",
2974                 .category = FIO_OPT_C_FILE,
2975                 .group  = FIO_OPT_G_FILENAME,
2976         },
2977         {
2978                 .name   = "allow_mounted_write",
2979                 .lname  = "Allow mounted write",
2980                 .type   = FIO_OPT_BOOL,
2981                 .off1   = td_var_offset(allow_mounted_write),
2982                 .help   = "Allow writes to a mounted partition",
2983                 .def    = "0",
2984                 .category = FIO_OPT_C_FILE,
2985                 .group  = FIO_OPT_G_FILENAME,
2986         },
2987         {
2988                 .name   = "pre_read",
2989                 .lname  = "Pre-read files",
2990                 .type   = FIO_OPT_BOOL,
2991                 .off1   = td_var_offset(pre_read),
2992                 .help   = "Pre-read files before starting official testing",
2993                 .def    = "0",
2994                 .category = FIO_OPT_C_FILE,
2995                 .group  = FIO_OPT_G_INVALID,
2996         },
2997 #ifdef FIO_HAVE_CPU_AFFINITY
2998         {
2999                 .name   = "cpumask",
3000                 .lname  = "CPU mask",
3001                 .type   = FIO_OPT_INT,
3002                 .cb     = str_cpumask_cb,
3003                 .off1   = td_var_offset(cpumask),
3004                 .help   = "CPU affinity mask",
3005                 .category = FIO_OPT_C_GENERAL,
3006                 .group  = FIO_OPT_G_CRED,
3007         },
3008         {
3009                 .name   = "cpus_allowed",
3010                 .lname  = "CPUs allowed",
3011                 .type   = FIO_OPT_STR,
3012                 .cb     = str_cpus_allowed_cb,
3013                 .off1   = td_var_offset(cpumask),
3014                 .help   = "Set CPUs allowed",
3015                 .category = FIO_OPT_C_GENERAL,
3016                 .group  = FIO_OPT_G_CRED,
3017         },
3018         {
3019                 .name   = "cpus_allowed_policy",
3020                 .lname  = "CPUs allowed distribution policy",
3021                 .type   = FIO_OPT_STR,
3022                 .off1   = td_var_offset(cpus_allowed_policy),
3023                 .help   = "Distribution policy for cpus_allowed",
3024                 .parent = "cpus_allowed",
3025                 .prio   = 1,
3026                 .posval = {
3027                           { .ival = "shared",
3028                             .oval = FIO_CPUS_SHARED,
3029                             .help = "Mask shared between threads",
3030                           },
3031                           { .ival = "split",
3032                             .oval = FIO_CPUS_SPLIT,
3033                             .help = "Mask split between threads",
3034                           },
3035                 },
3036                 .category = FIO_OPT_C_GENERAL,
3037                 .group  = FIO_OPT_G_CRED,
3038         },
3039 #endif
3040 #ifdef CONFIG_LIBNUMA
3041         {
3042                 .name   = "numa_cpu_nodes",
3043                 .type   = FIO_OPT_STR,
3044                 .cb     = str_numa_cpunodes_cb,
3045                 .off1   = td_var_offset(numa_cpunodes),
3046                 .help   = "NUMA CPU nodes bind",
3047                 .category = FIO_OPT_C_GENERAL,
3048                 .group  = FIO_OPT_G_INVALID,
3049         },
3050         {
3051                 .name   = "numa_mem_policy",
3052                 .type   = FIO_OPT_STR,
3053                 .cb     = str_numa_mpol_cb,
3054                 .off1   = td_var_offset(numa_memnodes),
3055                 .help   = "NUMA memory policy setup",
3056                 .category = FIO_OPT_C_GENERAL,
3057                 .group  = FIO_OPT_G_INVALID,
3058         },
3059 #endif
3060         {
3061                 .name   = "end_fsync",
3062                 .lname  = "End fsync",
3063                 .type   = FIO_OPT_BOOL,
3064                 .off1   = td_var_offset(end_fsync),
3065                 .help   = "Include fsync at the end of job",
3066                 .def    = "0",
3067                 .category = FIO_OPT_C_FILE,
3068                 .group  = FIO_OPT_G_INVALID,
3069         },
3070         {
3071                 .name   = "fsync_on_close",
3072                 .lname  = "Fsync on close",
3073                 .type   = FIO_OPT_BOOL,
3074                 .off1   = td_var_offset(fsync_on_close),
3075                 .help   = "fsync files on close",
3076                 .def    = "0",
3077                 .category = FIO_OPT_C_FILE,
3078                 .group  = FIO_OPT_G_INVALID,
3079         },
3080         {
3081                 .name   = "unlink",
3082                 .lname  = "Unlink file",
3083                 .type   = FIO_OPT_BOOL,
3084                 .off1   = td_var_offset(unlink),
3085                 .help   = "Unlink created files after job has completed",
3086                 .def    = "0",
3087                 .category = FIO_OPT_C_FILE,
3088                 .group  = FIO_OPT_G_INVALID,
3089         },
3090         {
3091                 .name   = "exitall",
3092                 .lname  = "Exit-all on terminate",
3093                 .type   = FIO_OPT_STR_SET,
3094                 .cb     = str_exitall_cb,
3095                 .help   = "Terminate all jobs when one exits",
3096                 .category = FIO_OPT_C_GENERAL,
3097                 .group  = FIO_OPT_G_PROCESS,
3098         },
3099         {
3100                 .name   = "stonewall",
3101                 .lname  = "Wait for previous",
3102                 .alias  = "wait_for_previous",
3103                 .type   = FIO_OPT_STR_SET,
3104                 .off1   = td_var_offset(stonewall),
3105                 .help   = "Insert a hard barrier between this job and previous",
3106                 .category = FIO_OPT_C_GENERAL,
3107                 .group  = FIO_OPT_G_PROCESS,
3108         },
3109         {
3110                 .name   = "new_group",
3111                 .lname  = "New group",
3112                 .type   = FIO_OPT_STR_SET,
3113                 .off1   = td_var_offset(new_group),
3114                 .help   = "Mark the start of a new group (for reporting)",
3115                 .category = FIO_OPT_C_GENERAL,
3116                 .group  = FIO_OPT_G_PROCESS,
3117         },
3118         {
3119                 .name   = "thread",
3120                 .lname  = "Thread",
3121                 .type   = FIO_OPT_STR_SET,
3122                 .off1   = td_var_offset(use_thread),
3123                 .help   = "Use threads instead of processes",
3124 #ifdef CONFIG_NO_SHM
3125                 .def    = "1",
3126                 .no_warn_def = 1,
3127 #endif
3128                 .category = FIO_OPT_C_GENERAL,
3129                 .group  = FIO_OPT_G_PROCESS,
3130         },
3131         {
3132                 .name   = "per_job_logs",
3133                 .type   = FIO_OPT_BOOL,
3134                 .off1   = td_var_offset(per_job_logs),
3135                 .help   = "Include job number in generated log files or not",
3136                 .def    = "1",
3137                 .category = FIO_OPT_C_LOG,
3138                 .group  = FIO_OPT_G_INVALID,
3139         },
3140         {
3141                 .name   = "write_bw_log",
3142                 .lname  = "Write bandwidth log",
3143                 .type   = FIO_OPT_STR_STORE,
3144                 .off1   = td_var_offset(bw_log_file),
3145                 .help   = "Write log of bandwidth during run",
3146                 .category = FIO_OPT_C_LOG,
3147                 .group  = FIO_OPT_G_INVALID,
3148         },
3149         {
3150                 .name   = "write_lat_log",
3151                 .lname  = "Write latency log",
3152                 .type   = FIO_OPT_STR_STORE,
3153                 .off1   = td_var_offset(lat_log_file),
3154                 .help   = "Write log of latency during run",
3155                 .category = FIO_OPT_C_LOG,
3156                 .group  = FIO_OPT_G_INVALID,
3157         },
3158         {
3159                 .name   = "write_iops_log",
3160                 .lname  = "Write IOPS log",
3161                 .type   = FIO_OPT_STR_STORE,
3162                 .off1   = td_var_offset(iops_log_file),
3163                 .help   = "Write log of IOPS during run",
3164                 .category = FIO_OPT_C_LOG,
3165                 .group  = FIO_OPT_G_INVALID,
3166         },
3167         {
3168                 .name   = "log_avg_msec",
3169                 .lname  = "Log averaging (msec)",
3170                 .type   = FIO_OPT_INT,
3171                 .off1   = td_var_offset(log_avg_msec),
3172                 .help   = "Average bw/iops/lat logs over this period of time",
3173                 .def    = "0",
3174                 .category = FIO_OPT_C_LOG,
3175                 .group  = FIO_OPT_G_INVALID,
3176         },
3177         {
3178                 .name   = "log_offset",
3179                 .lname  = "Log offset of IO",
3180                 .type   = FIO_OPT_BOOL,
3181                 .off1   = td_var_offset(log_offset),
3182                 .help   = "Include offset of IO for each log entry",
3183                 .def    = "0",
3184                 .category = FIO_OPT_C_LOG,
3185                 .group  = FIO_OPT_G_INVALID,
3186         },
3187 #ifdef CONFIG_ZLIB
3188         {
3189                 .name   = "log_compression",
3190                 .lname  = "Log compression",
3191                 .type   = FIO_OPT_INT,
3192                 .off1   = td_var_offset(log_gz),
3193                 .help   = "Log in compressed chunks of this size",
3194                 .minval = 1024ULL,
3195                 .maxval = 512 * 1024 * 1024ULL,
3196                 .category = FIO_OPT_C_LOG,
3197                 .group  = FIO_OPT_G_INVALID,
3198         },
3199         {
3200                 .name   = "log_store_compressed",
3201                 .lname  = "Log store compressed",
3202                 .type   = FIO_OPT_BOOL,
3203                 .off1   = td_var_offset(log_gz_store),
3204                 .help   = "Store logs in a compressed format",
3205                 .category = FIO_OPT_C_LOG,
3206                 .group  = FIO_OPT_G_INVALID,
3207         },
3208 #endif
3209         {
3210                 .name   = "block_error_percentiles",
3211                 .lname  = "Block error percentiles",
3212                 .type   = FIO_OPT_BOOL,
3213                 .off1   = td_var_offset(block_error_hist),
3214                 .help   = "Record trim block errors and make a histogram",
3215                 .def    = "0",
3216                 .category = FIO_OPT_C_LOG,
3217                 .group  = FIO_OPT_G_INVALID,
3218         },
3219         {
3220                 .name   = "bwavgtime",
3221                 .lname  = "Bandwidth average time",
3222                 .type   = FIO_OPT_INT,
3223                 .off1   = td_var_offset(bw_avg_time),
3224                 .help   = "Time window over which to calculate bandwidth"
3225                           " (msec)",
3226                 .def    = "500",
3227                 .parent = "write_bw_log",
3228                 .hide   = 1,
3229                 .interval = 100,
3230                 .category = FIO_OPT_C_LOG,
3231                 .group  = FIO_OPT_G_INVALID,
3232         },
3233         {
3234                 .name   = "iopsavgtime",
3235                 .lname  = "IOPS average time",
3236                 .type   = FIO_OPT_INT,
3237                 .off1   = td_var_offset(iops_avg_time),
3238                 .help   = "Time window over which to calculate IOPS (msec)",
3239                 .def    = "500",
3240                 .parent = "write_iops_log",
3241                 .hide   = 1,
3242                 .interval = 100,
3243                 .category = FIO_OPT_C_LOG,
3244                 .group  = FIO_OPT_G_INVALID,
3245         },
3246         {
3247                 .name   = "group_reporting",
3248                 .lname  = "Group reporting",
3249                 .type   = FIO_OPT_STR_SET,
3250                 .off1   = td_var_offset(group_reporting),
3251                 .help   = "Do reporting on a per-group basis",
3252                 .category = FIO_OPT_C_STAT,
3253                 .group  = FIO_OPT_G_INVALID,
3254         },
3255         {
3256                 .name   = "zero_buffers",
3257                 .lname  = "Zero I/O buffers",
3258                 .type   = FIO_OPT_STR_SET,
3259                 .off1   = td_var_offset(zero_buffers),
3260                 .help   = "Init IO buffers to all zeroes",
3261                 .category = FIO_OPT_C_IO,
3262                 .group  = FIO_OPT_G_IO_BUF,
3263         },
3264         {
3265                 .name   = "refill_buffers",
3266                 .lname  = "Refill I/O buffers",
3267                 .type   = FIO_OPT_STR_SET,
3268                 .off1   = td_var_offset(refill_buffers),
3269                 .help   = "Refill IO buffers on every IO submit",
3270                 .category = FIO_OPT_C_IO,
3271                 .group  = FIO_OPT_G_IO_BUF,
3272         },
3273         {
3274                 .name   = "scramble_buffers",
3275                 .lname  = "Scramble I/O buffers",
3276                 .type   = FIO_OPT_BOOL,
3277                 .off1   = td_var_offset(scramble_buffers),
3278                 .help   = "Slightly scramble buffers on every IO submit",
3279                 .def    = "1",
3280                 .category = FIO_OPT_C_IO,
3281                 .group  = FIO_OPT_G_IO_BUF,
3282         },
3283         {
3284                 .name   = "buffer_pattern",
3285                 .lname  = "Buffer pattern",
3286                 .type   = FIO_OPT_STR,
3287                 .cb     = str_buffer_pattern_cb,
3288                 .off1   = td_var_offset(buffer_pattern),
3289                 .help   = "Fill pattern for IO buffers",
3290                 .category = FIO_OPT_C_IO,
3291                 .group  = FIO_OPT_G_IO_BUF,
3292         },
3293         {
3294                 .name   = "buffer_compress_percentage",
3295                 .lname  = "Buffer compression percentage",
3296                 .type   = FIO_OPT_INT,
3297                 .cb     = str_buffer_compress_cb,
3298                 .off1   = td_var_offset(compress_percentage),
3299                 .maxval = 100,
3300                 .minval = 0,
3301                 .help   = "How compressible the buffer is (approximately)",
3302                 .interval = 5,
3303                 .category = FIO_OPT_C_IO,
3304                 .group  = FIO_OPT_G_IO_BUF,
3305         },
3306         {
3307                 .name   = "buffer_compress_chunk",
3308                 .lname  = "Buffer compression chunk size",
3309                 .type   = FIO_OPT_INT,
3310                 .off1   = td_var_offset(compress_chunk),
3311                 .parent = "buffer_compress_percentage",
3312                 .hide   = 1,
3313                 .help   = "Size of compressible region in buffer",
3314                 .interval = 256,
3315                 .category = FIO_OPT_C_IO,
3316                 .group  = FIO_OPT_G_IO_BUF,
3317         },
3318         {
3319                 .name   = "dedupe_percentage",
3320                 .lname  = "Dedupe percentage",
3321                 .type   = FIO_OPT_INT,
3322                 .cb     = str_dedupe_cb,
3323                 .off1   = td_var_offset(dedupe_percentage),
3324                 .maxval = 100,
3325                 .minval = 0,
3326                 .help   = "Percentage of buffers that are dedupable",
3327                 .interval = 1,
3328                 .category = FIO_OPT_C_IO,
3329                 .group  = FIO_OPT_G_IO_BUF,
3330         },
3331         {
3332                 .name   = "clat_percentiles",
3333                 .lname  = "Completion latency percentiles",
3334                 .type   = FIO_OPT_BOOL,
3335                 .off1   = td_var_offset(clat_percentiles),
3336                 .help   = "Enable the reporting of completion latency percentiles",
3337                 .def    = "1",
3338                 .category = FIO_OPT_C_STAT,
3339                 .group  = FIO_OPT_G_INVALID,
3340         },
3341         {
3342                 .name   = "percentile_list",
3343                 .lname  = "Percentile list",
3344                 .type   = FIO_OPT_FLOAT_LIST,
3345                 .off1   = td_var_offset(percentile_list),
3346                 .off2   = td_var_offset(percentile_precision),
3347                 .help   = "Specify a custom list of percentiles to report for "
3348                           "completion latency and block errors",
3349                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3350                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3351                 .minfp  = 0.0,
3352                 .maxfp  = 100.0,
3353                 .category = FIO_OPT_C_STAT,
3354                 .group  = FIO_OPT_G_INVALID,
3355         },
3356
3357 #ifdef FIO_HAVE_DISK_UTIL
3358         {
3359                 .name   = "disk_util",
3360                 .lname  = "Disk utilization",
3361                 .type   = FIO_OPT_BOOL,
3362                 .off1   = td_var_offset(do_disk_util),
3363                 .help   = "Log disk utilization statistics",
3364                 .def    = "1",
3365                 .category = FIO_OPT_C_STAT,
3366                 .group  = FIO_OPT_G_INVALID,
3367         },
3368 #endif
3369         {
3370                 .name   = "gtod_reduce",
3371                 .lname  = "Reduce gettimeofday() calls",
3372                 .type   = FIO_OPT_BOOL,
3373                 .help   = "Greatly reduce number of gettimeofday() calls",
3374                 .cb     = str_gtod_reduce_cb,
3375                 .def    = "0",
3376                 .hide_on_set = 1,
3377                 .category = FIO_OPT_C_STAT,
3378                 .group  = FIO_OPT_G_INVALID,
3379         },
3380         {
3381                 .name   = "disable_lat",
3382                 .lname  = "Disable all latency stats",
3383                 .type   = FIO_OPT_BOOL,
3384                 .off1   = td_var_offset(disable_lat),
3385                 .help   = "Disable latency numbers",
3386                 .parent = "gtod_reduce",
3387                 .hide   = 1,
3388                 .def    = "0",
3389                 .category = FIO_OPT_C_STAT,
3390                 .group  = FIO_OPT_G_INVALID,
3391         },
3392         {
3393                 .name   = "disable_clat",
3394                 .lname  = "Disable completion latency stats",
3395                 .type   = FIO_OPT_BOOL,
3396                 .off1   = td_var_offset(disable_clat),
3397                 .help   = "Disable completion latency numbers",
3398                 .parent = "gtod_reduce",
3399                 .hide   = 1,
3400                 .def    = "0",
3401                 .category = FIO_OPT_C_STAT,
3402                 .group  = FIO_OPT_G_INVALID,
3403         },
3404         {
3405                 .name   = "disable_slat",
3406                 .lname  = "Disable submission latency stats",
3407                 .type   = FIO_OPT_BOOL,
3408                 .off1   = td_var_offset(disable_slat),
3409                 .help   = "Disable submission latency numbers",
3410                 .parent = "gtod_reduce",
3411                 .hide   = 1,
3412                 .def    = "0",
3413                 .category = FIO_OPT_C_STAT,
3414                 .group  = FIO_OPT_G_INVALID,
3415         },
3416         {
3417                 .name   = "disable_bw_measurement",
3418                 .lname  = "Disable bandwidth stats",
3419                 .type   = FIO_OPT_BOOL,
3420                 .off1   = td_var_offset(disable_bw),
3421                 .help   = "Disable bandwidth logging",
3422                 .parent = "gtod_reduce",
3423                 .hide   = 1,
3424                 .def    = "0",
3425                 .category = FIO_OPT_C_STAT,
3426                 .group  = FIO_OPT_G_INVALID,
3427         },
3428         {
3429                 .name   = "gtod_cpu",
3430                 .lname  = "Dedicated gettimeofday() CPU",
3431                 .type   = FIO_OPT_INT,
3432                 .off1   = td_var_offset(gtod_cpu),
3433                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3434                 .verify = gtod_cpu_verify,
3435                 .category = FIO_OPT_C_GENERAL,
3436                 .group  = FIO_OPT_G_CLOCK,
3437         },
3438         {
3439                 .name   = "unified_rw_reporting",
3440                 .type   = FIO_OPT_BOOL,
3441                 .off1   = td_var_offset(unified_rw_rep),
3442                 .help   = "Unify reporting across data direction",
3443                 .def    = "0",
3444                 .category = FIO_OPT_C_GENERAL,
3445                 .group  = FIO_OPT_G_INVALID,
3446         },
3447         {
3448                 .name   = "continue_on_error",
3449                 .lname  = "Continue on error",
3450                 .type   = FIO_OPT_STR,
3451                 .off1   = td_var_offset(continue_on_error),
3452                 .help   = "Continue on non-fatal errors during IO",
3453                 .def    = "none",
3454                 .category = FIO_OPT_C_GENERAL,
3455                 .group  = FIO_OPT_G_ERR,
3456                 .posval = {
3457                           { .ival = "none",
3458                             .oval = ERROR_TYPE_NONE,
3459                             .help = "Exit when an error is encountered",
3460                           },
3461                           { .ival = "read",
3462                             .oval = ERROR_TYPE_READ,
3463                             .help = "Continue on read errors only",
3464                           },
3465                           { .ival = "write",
3466                             .oval = ERROR_TYPE_WRITE,
3467                             .help = "Continue on write errors only",
3468                           },
3469                           { .ival = "io",
3470                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3471                             .help = "Continue on any IO errors",
3472                           },
3473                           { .ival = "verify",
3474                             .oval = ERROR_TYPE_VERIFY,
3475                             .help = "Continue on verify errors only",
3476                           },
3477                           { .ival = "all",
3478                             .oval = ERROR_TYPE_ANY,
3479                             .help = "Continue on all io and verify errors",
3480                           },
3481                           { .ival = "0",
3482                             .oval = ERROR_TYPE_NONE,
3483                             .help = "Alias for 'none'",
3484                           },
3485                           { .ival = "1",
3486                             .oval = ERROR_TYPE_ANY,
3487                             .help = "Alias for 'all'",
3488                           },
3489                 },
3490         },
3491         {
3492                 .name   = "ignore_error",
3493                 .type   = FIO_OPT_STR,
3494                 .cb     = str_ignore_error_cb,
3495                 .off1   = td_var_offset(ignore_error_nr),
3496                 .help   = "Set a specific list of errors to ignore",
3497                 .parent = "rw",
3498                 .category = FIO_OPT_C_GENERAL,
3499                 .group  = FIO_OPT_G_ERR,
3500         },
3501         {
3502                 .name   = "error_dump",
3503                 .type   = FIO_OPT_BOOL,
3504                 .off1   = td_var_offset(error_dump),
3505                 .def    = "0",
3506                 .help   = "Dump info on each error",
3507                 .category = FIO_OPT_C_GENERAL,
3508                 .group  = FIO_OPT_G_ERR,
3509         },
3510         {
3511                 .name   = "profile",
3512                 .lname  = "Profile",
3513                 .type   = FIO_OPT_STR_STORE,
3514                 .off1   = td_var_offset(profile),
3515                 .help   = "Select a specific builtin performance test",
3516                 .category = FIO_OPT_C_PROFILE,
3517                 .group  = FIO_OPT_G_INVALID,
3518         },
3519         {
3520                 .name   = "cgroup",
3521                 .lname  = "Cgroup",
3522                 .type   = FIO_OPT_STR_STORE,
3523                 .off1   = td_var_offset(cgroup),
3524                 .help   = "Add job to cgroup of this name",
3525                 .category = FIO_OPT_C_GENERAL,
3526                 .group  = FIO_OPT_G_CGROUP,
3527         },
3528         {
3529                 .name   = "cgroup_nodelete",
3530                 .lname  = "Cgroup no-delete",
3531                 .type   = FIO_OPT_BOOL,
3532                 .off1   = td_var_offset(cgroup_nodelete),
3533                 .help   = "Do not delete cgroups after job completion",
3534                 .def    = "0",
3535                 .parent = "cgroup",
3536                 .category = FIO_OPT_C_GENERAL,
3537                 .group  = FIO_OPT_G_CGROUP,
3538         },
3539         {
3540                 .name   = "cgroup_weight",
3541                 .lname  = "Cgroup weight",
3542                 .type   = FIO_OPT_INT,
3543                 .off1   = td_var_offset(cgroup_weight),
3544                 .help   = "Use given weight for cgroup",
3545                 .minval = 100,
3546                 .maxval = 1000,
3547                 .parent = "cgroup",
3548                 .category = FIO_OPT_C_GENERAL,
3549                 .group  = FIO_OPT_G_CGROUP,
3550         },
3551         {
3552                 .name   = "uid",
3553                 .lname  = "User ID",
3554                 .type   = FIO_OPT_INT,
3555                 .off1   = td_var_offset(uid),
3556                 .help   = "Run job with this user ID",
3557                 .category = FIO_OPT_C_GENERAL,
3558                 .group  = FIO_OPT_G_CRED,
3559         },
3560         {
3561                 .name   = "gid",
3562                 .lname  = "Group ID",
3563                 .type   = FIO_OPT_INT,
3564                 .off1   = td_var_offset(gid),
3565                 .help   = "Run job with this group ID",
3566                 .category = FIO_OPT_C_GENERAL,
3567                 .group  = FIO_OPT_G_CRED,
3568         },
3569         {
3570                 .name   = "kb_base",
3571                 .lname  = "KB Base",
3572                 .type   = FIO_OPT_INT,
3573                 .off1   = td_var_offset(kb_base),
3574                 .prio   = 1,
3575                 .def    = "1024",
3576                 .posval = {
3577                           { .ival = "1024",
3578                             .oval = 1024,
3579                             .help = "Use 1024 as the K base",
3580                           },
3581                           { .ival = "1000",
3582                             .oval = 1000,
3583                             .help = "Use 1000 as the K base",
3584                           },
3585                 },
3586                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3587                 .category = FIO_OPT_C_GENERAL,
3588                 .group  = FIO_OPT_G_INVALID,
3589         },
3590         {
3591                 .name   = "unit_base",
3592                 .lname  = "Base unit for reporting (Bits or Bytes)",
3593                 .type   = FIO_OPT_INT,
3594                 .off1   = td_var_offset(unit_base),
3595                 .prio   = 1,
3596                 .posval = {
3597                           { .ival = "0",
3598                             .oval = 0,
3599                             .help = "Auto-detect",
3600                           },
3601                           { .ival = "8",
3602                             .oval = 8,
3603                             .help = "Normal (byte based)",
3604                           },
3605                           { .ival = "1",
3606                             .oval = 1,
3607                             .help = "Bit based",
3608                           },
3609                 },
3610                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3611                 .category = FIO_OPT_C_GENERAL,
3612                 .group  = FIO_OPT_G_INVALID,
3613         },
3614         {
3615                 .name   = "hugepage-size",
3616                 .lname  = "Hugepage size",
3617                 .type   = FIO_OPT_INT,
3618                 .off1   = td_var_offset(hugepage_size),
3619                 .help   = "When using hugepages, specify size of each page",
3620                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3621                 .interval = 1024 * 1024,
3622                 .category = FIO_OPT_C_GENERAL,
3623                 .group  = FIO_OPT_G_INVALID,
3624         },
3625         {
3626                 .name   = "flow_id",
3627                 .lname  = "I/O flow ID",
3628                 .type   = FIO_OPT_INT,
3629                 .off1   = td_var_offset(flow_id),
3630                 .help   = "The flow index ID to use",
3631                 .def    = "0",
3632                 .category = FIO_OPT_C_IO,
3633                 .group  = FIO_OPT_G_IO_FLOW,
3634         },
3635         {
3636                 .name   = "flow",
3637                 .lname  = "I/O flow weight",
3638                 .type   = FIO_OPT_INT,
3639                 .off1   = td_var_offset(flow),
3640                 .help   = "Weight for flow control of this job",
3641                 .parent = "flow_id",
3642                 .hide   = 1,
3643                 .def    = "0",
3644                 .category = FIO_OPT_C_IO,
3645                 .group  = FIO_OPT_G_IO_FLOW,
3646         },
3647         {
3648                 .name   = "flow_watermark",
3649                 .lname  = "I/O flow watermark",
3650                 .type   = FIO_OPT_INT,
3651                 .off1   = td_var_offset(flow_watermark),
3652                 .help   = "High watermark for flow control. This option"
3653                         " should be set to the same value for all threads"
3654                         " with non-zero flow.",
3655                 .parent = "flow_id",
3656                 .hide   = 1,
3657                 .def    = "1024",
3658                 .category = FIO_OPT_C_IO,
3659                 .group  = FIO_OPT_G_IO_FLOW,
3660         },
3661         {
3662                 .name   = "flow_sleep",
3663                 .lname  = "I/O flow sleep",
3664                 .type   = FIO_OPT_INT,
3665                 .off1   = td_var_offset(flow_sleep),
3666                 .help   = "How many microseconds to sleep after being held"
3667                         " back by the flow control mechanism",
3668                 .parent = "flow_id",
3669                 .hide   = 1,
3670                 .def    = "0",
3671                 .category = FIO_OPT_C_IO,
3672                 .group  = FIO_OPT_G_IO_FLOW,
3673         },
3674         {
3675                 .name   = "skip_bad",
3676                 .lname  = "Skip operations against bad blocks",
3677                 .type   = FIO_OPT_BOOL,
3678                 .off1   = td_var_offset(skip_bad),
3679                 .help   = "Skip operations against known bad blocks.",
3680                 .hide   = 1,
3681                 .def    = "0",
3682                 .category = FIO_OPT_C_IO,
3683                 .group  = FIO_OPT_G_MTD,
3684         },
3685         {
3686                 .name = NULL,
3687         },
3688 };
3689
3690 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3691                         const char *name, int val)
3692 {
3693         lopt->name = (char *) name;
3694         lopt->val = val;
3695         if (o->type == FIO_OPT_STR_SET)
3696                 lopt->has_arg = optional_argument;
3697         else
3698                 lopt->has_arg = required_argument;
3699 }
3700
3701 static void options_to_lopts(struct fio_option *opts,
3702                               struct option *long_options,
3703                               int i, int option_type)
3704 {
3705         struct fio_option *o = &opts[0];
3706         while (o->name) {
3707                 add_to_lopt(&long_options[i], o, o->name, option_type);
3708                 if (o->alias) {
3709                         i++;
3710                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3711                 }
3712
3713                 i++;
3714                 o++;
3715                 assert(i < FIO_NR_OPTIONS);
3716         }
3717 }
3718
3719 void fio_options_set_ioengine_opts(struct option *long_options,
3720                                    struct thread_data *td)
3721 {
3722         unsigned int i;
3723
3724         i = 0;
3725         while (long_options[i].name) {
3726                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3727                         memset(&long_options[i], 0, sizeof(*long_options));
3728                         break;
3729                 }
3730                 i++;
3731         }
3732
3733         /*
3734          * Just clear out the prior ioengine options.
3735          */
3736         if (!td || !td->eo)
3737                 return;
3738
3739         options_to_lopts(td->io_ops->options, long_options, i,
3740                          FIO_GETOPT_IOENGINE);
3741 }
3742
3743 void fio_options_dup_and_init(struct option *long_options)
3744 {
3745         unsigned int i;
3746
3747         options_init(fio_options);
3748
3749         i = 0;
3750         while (long_options[i].name)
3751                 i++;
3752
3753         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3754 }
3755
3756 struct fio_keyword {
3757         const char *word;
3758         const char *desc;
3759         char *replace;
3760 };
3761
3762 static struct fio_keyword fio_keywords[] = {
3763         {
3764                 .word   = "$pagesize",
3765                 .desc   = "Page size in the system",
3766         },
3767         {
3768                 .word   = "$mb_memory",
3769                 .desc   = "Megabytes of memory online",
3770         },
3771         {
3772                 .word   = "$ncpus",
3773                 .desc   = "Number of CPUs online in the system",
3774         },
3775         {
3776                 .word   = NULL,
3777         },
3778 };
3779
3780 void fio_keywords_exit(void)
3781 {
3782         struct fio_keyword *kw;
3783
3784         kw = &fio_keywords[0];
3785         while (kw->word) {
3786                 free(kw->replace);
3787                 kw->replace = NULL;
3788                 kw++;
3789         }
3790 }
3791
3792 void fio_keywords_init(void)
3793 {
3794         unsigned long long mb_memory;
3795         char buf[128];
3796         long l;
3797
3798         sprintf(buf, "%lu", (unsigned long) page_size);
3799         fio_keywords[0].replace = strdup(buf);
3800
3801         mb_memory = os_phys_mem() / (1024 * 1024);
3802         sprintf(buf, "%llu", mb_memory);
3803         fio_keywords[1].replace = strdup(buf);
3804
3805         l = cpus_online();
3806         sprintf(buf, "%lu", l);
3807         fio_keywords[2].replace = strdup(buf);
3808 }
3809
3810 #define BC_APP          "bc"
3811
3812 static char *bc_calc(char *str)
3813 {
3814         char buf[128], *tmp;
3815         FILE *f;
3816         int ret;
3817
3818         /*
3819          * No math, just return string
3820          */
3821         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3822              !strchr(str, '/')) || strchr(str, '\''))
3823                 return str;
3824
3825         /*
3826          * Split option from value, we only need to calculate the value
3827          */
3828         tmp = strchr(str, '=');
3829         if (!tmp)
3830                 return str;
3831
3832         tmp++;
3833
3834         /*
3835          * Prevent buffer overflows; such a case isn't reasonable anyway
3836          */
3837         if (strlen(str) >= 128 || strlen(tmp) > 100)
3838                 return str;
3839
3840         sprintf(buf, "which %s > /dev/null", BC_APP);
3841         if (system(buf)) {
3842                 log_err("fio: bc is needed for performing math\n");
3843                 return NULL;
3844         }
3845
3846         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
3847         f = popen(buf, "r");
3848         if (!f)
3849                 return NULL;
3850
3851         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
3852         if (ret <= 0) {
3853                 pclose(f);
3854                 return NULL;
3855         }
3856
3857         pclose(f);
3858         buf[(tmp - str) + ret - 1] = '\0';
3859         memcpy(buf, str, tmp - str);
3860         free(str);
3861         return strdup(buf);
3862 }
3863
3864 /*
3865  * Return a copy of the input string with substrings of the form ${VARNAME}
3866  * substituted with the value of the environment variable VARNAME.  The
3867  * substitution always occurs, even if VARNAME is empty or the corresponding
3868  * environment variable undefined.
3869  */
3870 static char *option_dup_subs(const char *opt)
3871 {
3872         char out[OPT_LEN_MAX+1];
3873         char in[OPT_LEN_MAX+1];
3874         char *outptr = out;
3875         char *inptr = in;
3876         char *ch1, *ch2, *env;
3877         ssize_t nchr = OPT_LEN_MAX;
3878         size_t envlen;
3879
3880         if (strlen(opt) + 1 > OPT_LEN_MAX) {
3881                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
3882                 return NULL;
3883         }
3884
3885         in[OPT_LEN_MAX] = '\0';
3886         strncpy(in, opt, OPT_LEN_MAX);
3887
3888         while (*inptr && nchr > 0) {
3889                 if (inptr[0] == '$' && inptr[1] == '{') {
3890                         ch2 = strchr(inptr, '}');
3891                         if (ch2 && inptr+1 < ch2) {
3892                                 ch1 = inptr+2;
3893                                 inptr = ch2+1;
3894                                 *ch2 = '\0';
3895
3896                                 env = getenv(ch1);
3897                                 if (env) {
3898                                         envlen = strlen(env);
3899                                         if (envlen <= nchr) {
3900                                                 memcpy(outptr, env, envlen);
3901                                                 outptr += envlen;
3902                                                 nchr -= envlen;
3903                                         }
3904                                 }
3905
3906                                 continue;
3907                         }
3908                 }
3909
3910                 *outptr++ = *inptr++;
3911                 --nchr;
3912         }
3913
3914         *outptr = '\0';
3915         return strdup(out);
3916 }
3917
3918 /*
3919  * Look for reserved variable names and replace them with real values
3920  */
3921 static char *fio_keyword_replace(char *opt)
3922 {
3923         char *s;
3924         int i;
3925         int docalc = 0;
3926
3927         for (i = 0; fio_keywords[i].word != NULL; i++) {
3928                 struct fio_keyword *kw = &fio_keywords[i];
3929
3930                 while ((s = strstr(opt, kw->word)) != NULL) {
3931                         char *new = malloc(strlen(opt) + 1);
3932                         char *o_org = opt;
3933                         int olen = s - opt;
3934                         int len;
3935
3936                         /*
3937                          * Copy part of the string before the keyword and
3938                          * sprintf() the replacement after it.
3939                          */
3940                         memcpy(new, opt, olen);
3941                         len = sprintf(new + olen, "%s", kw->replace);
3942
3943                         /*
3944                          * If there's more in the original string, copy that
3945                          * in too
3946                          */
3947                         opt += strlen(kw->word) + olen;
3948                         if (strlen(opt))
3949                                 memcpy(new + olen + len, opt, opt - o_org - 1);
3950
3951                         /*
3952                          * replace opt and free the old opt
3953                          */
3954                         opt = new;
3955                         free(o_org);
3956
3957                         docalc = 1;
3958                 }
3959         }
3960
3961         /*
3962          * Check for potential math and invoke bc, if possible
3963          */
3964         if (docalc)
3965                 opt = bc_calc(opt);
3966
3967         return opt;
3968 }
3969
3970 static char **dup_and_sub_options(char **opts, int num_opts)
3971 {
3972         int i;
3973         char **opts_copy = malloc(num_opts * sizeof(*opts));
3974         for (i = 0; i < num_opts; i++) {
3975                 opts_copy[i] = option_dup_subs(opts[i]);
3976                 if (!opts_copy[i])
3977                         continue;
3978                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
3979         }
3980         return opts_copy;
3981 }
3982
3983 static void show_closest_option(const char *opt)
3984 {
3985         int best_option, best_distance;
3986         int i, distance;
3987         char *name;
3988
3989         if (!strlen(opt))
3990                 return;
3991
3992         name = strdup(opt);
3993         i = 0;
3994         while (name[i] != '\0' && name[i] != '=')
3995                 i++;
3996         name[i] = '\0';
3997
3998         best_option = -1;
3999         best_distance = INT_MAX;
4000         i = 0;
4001         while (fio_options[i].name) {
4002                 distance = string_distance(name, fio_options[i].name);
4003                 if (distance < best_distance) {
4004                         best_distance = distance;
4005                         best_option = i;
4006                 }
4007                 i++;
4008         }
4009
4010         if (best_option != -1 && string_distance_ok(name, best_distance))
4011                 log_err("Did you mean %s?\n", fio_options[best_option].name);
4012
4013         free(name);
4014 }
4015
4016 int fio_options_parse(struct thread_data *td, char **opts, int num_opts,
4017                         int dump_cmdline)
4018 {
4019         int i, ret, unknown;
4020         char **opts_copy;
4021
4022         sort_options(opts, fio_options, num_opts);
4023         opts_copy = dup_and_sub_options(opts, num_opts);
4024
4025         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
4026                 struct fio_option *o;
4027                 int newret = parse_option(opts_copy[i], opts[i], fio_options,
4028                                                 &o, td, dump_cmdline);
4029
4030                 if (!newret && o)
4031                         fio_option_mark_set(&td->o, o);
4032
4033                 if (opts_copy[i]) {
4034                         if (newret && !o) {
4035                                 unknown++;
4036                                 continue;
4037                         }
4038                         free(opts_copy[i]);
4039                         opts_copy[i] = NULL;
4040                 }
4041
4042                 ret |= newret;
4043         }
4044
4045         if (unknown) {
4046                 ret |= ioengine_load(td);
4047                 if (td->eo) {
4048                         sort_options(opts_copy, td->io_ops->options, num_opts);
4049                         opts = opts_copy;
4050                 }
4051                 for (i = 0; i < num_opts; i++) {
4052                         struct fio_option *o = NULL;
4053                         int newret = 1;
4054
4055                         if (!opts_copy[i])
4056                                 continue;
4057
4058                         if (td->eo)
4059                                 newret = parse_option(opts_copy[i], opts[i],
4060                                                       td->io_ops->options, &o,
4061                                                       td->eo, dump_cmdline);
4062
4063                         ret |= newret;
4064                         if (!o) {
4065                                 log_err("Bad option <%s>\n", opts[i]);
4066                                 show_closest_option(opts[i]);
4067                         }
4068                         free(opts_copy[i]);
4069                         opts_copy[i] = NULL;
4070                 }
4071         }
4072
4073         free(opts_copy);
4074         return ret;
4075 }
4076
4077 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
4078 {
4079         int ret;
4080
4081         ret = parse_cmd_option(opt, val, fio_options, td);
4082         if (!ret) {
4083                 struct fio_option *o;
4084
4085                 o = find_option(fio_options, opt);
4086                 if (o)
4087                         fio_option_mark_set(&td->o, o);
4088         }
4089
4090         return ret;
4091 }
4092
4093 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
4094                                 char *val)
4095 {
4096         return parse_cmd_option(opt, val, td->io_ops->options, td->eo);
4097 }
4098
4099 void fio_fill_default_options(struct thread_data *td)
4100 {
4101         td->o.magic = OPT_MAGIC;
4102         fill_default_options(td, fio_options);
4103 }
4104
4105 int fio_show_option_help(const char *opt)
4106 {
4107         return show_cmd_help(fio_options, opt);
4108 }
4109
4110 void options_mem_dupe(void *data, struct fio_option *options)
4111 {
4112         struct fio_option *o;
4113         char **ptr;
4114
4115         for (o = &options[0]; o->name; o++) {
4116                 if (o->type != FIO_OPT_STR_STORE)
4117                         continue;
4118
4119                 ptr = td_var(data, o, o->off1);
4120                 if (*ptr)
4121                         *ptr = strdup(*ptr);
4122         }
4123 }
4124
4125 /*
4126  * dupe FIO_OPT_STR_STORE options
4127  */
4128 void fio_options_mem_dupe(struct thread_data *td)
4129 {
4130         options_mem_dupe(&td->o, fio_options);
4131
4132         if (td->eo && td->io_ops) {
4133                 void *oldeo = td->eo;
4134
4135                 td->eo = malloc(td->io_ops->option_struct_size);
4136                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
4137                 options_mem_dupe(td->eo, td->io_ops->options);
4138         }
4139 }
4140
4141 unsigned int fio_get_kb_base(void *data)
4142 {
4143         struct thread_options *o = data;
4144         unsigned int kb_base = 0;
4145
4146         /*
4147          * This is a hack... For private options, *data is not holding
4148          * a pointer to the thread_options, but to private data. This means
4149          * we can't safely dereference it, but magic is first so mem wise
4150          * it is valid. But this also means that if the job first sets
4151          * kb_base and expects that to be honored by private options,
4152          * it will be disappointed. We will return the global default
4153          * for this.
4154          */
4155         if (o && o->magic == OPT_MAGIC)
4156                 kb_base = o->kb_base;
4157         if (!kb_base)
4158                 kb_base = 1024;
4159
4160         return kb_base;
4161 }
4162
4163 int add_option(struct fio_option *o)
4164 {
4165         struct fio_option *__o;
4166         int opt_index = 0;
4167
4168         __o = fio_options;
4169         while (__o->name) {
4170                 opt_index++;
4171                 __o++;
4172         }
4173
4174         if (opt_index + 1 == FIO_MAX_OPTS) {
4175                 log_err("fio: FIO_MAX_OPTS is too small\n");
4176                 return 1;
4177         }
4178
4179         memcpy(&fio_options[opt_index], o, sizeof(*o));
4180         fio_options[opt_index + 1].name = NULL;
4181         return 0;
4182 }
4183
4184 void invalidate_profile_options(const char *prof_name)
4185 {
4186         struct fio_option *o;
4187
4188         o = fio_options;
4189         while (o->name) {
4190                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
4191                         o->type = FIO_OPT_INVALID;
4192                         o->prof_name = NULL;
4193                 }
4194                 o++;
4195         }
4196 }
4197
4198 void add_opt_posval(const char *optname, const char *ival, const char *help)
4199 {
4200         struct fio_option *o;
4201         unsigned int i;
4202
4203         o = find_option(fio_options, optname);
4204         if (!o)
4205                 return;
4206
4207         for (i = 0; i < PARSE_MAX_VP; i++) {
4208                 if (o->posval[i].ival)
4209                         continue;
4210
4211                 o->posval[i].ival = ival;
4212                 o->posval[i].help = help;
4213                 break;
4214         }
4215 }
4216
4217 void del_opt_posval(const char *optname, const char *ival)
4218 {
4219         struct fio_option *o;
4220         unsigned int i;
4221
4222         o = find_option(fio_options, optname);
4223         if (!o)
4224                 return;
4225
4226         for (i = 0; i < PARSE_MAX_VP; i++) {
4227                 if (!o->posval[i].ival)
4228                         continue;
4229                 if (strcmp(o->posval[i].ival, ival))
4230                         continue;
4231
4232                 o->posval[i].ival = NULL;
4233                 o->posval[i].help = NULL;
4234         }
4235 }
4236
4237 void fio_options_free(struct thread_data *td)
4238 {
4239         options_free(fio_options, td);
4240         if (td->eo && td->io_ops && td->io_ops->options) {
4241                 options_free(td->io_ops->options, td->eo);
4242                 free(td->eo);
4243                 td->eo = NULL;
4244         }
4245 }
4246
4247 struct fio_option *fio_option_find(const char *name)
4248 {
4249         return find_option(fio_options, name);
4250 }
4251
4252 static struct fio_option *find_next_opt(struct thread_options *o,
4253                                         struct fio_option *from,
4254                                         unsigned int off1)
4255 {
4256         struct fio_option *opt;
4257
4258         if (!from)
4259                 from = &fio_options[0];
4260         else
4261                 from++;
4262
4263         opt = NULL;
4264         do {
4265                 if (off1 == from->off1) {
4266                         opt = from;
4267                         break;
4268                 }
4269                 from++;
4270         } while (from->name);
4271
4272         return opt;
4273 }
4274
4275 static int opt_is_set(struct thread_options *o, struct fio_option *opt)
4276 {
4277         unsigned int opt_off, index, offset;
4278
4279         opt_off = opt - &fio_options[0];
4280         index = opt_off / (8 * sizeof(uint64_t));
4281         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4282         return (o->set_options[index] & ((uint64_t)1 << offset)) != 0;
4283 }
4284
4285 int __fio_option_is_set(struct thread_options *o, unsigned int off1)
4286 {
4287         struct fio_option *opt, *next;
4288
4289         next = NULL;
4290         while ((opt = find_next_opt(o, next, off1)) != NULL) {
4291                 if (opt_is_set(o, opt))
4292                         return 1;
4293
4294                 next = opt;
4295         }
4296
4297         return 0;
4298 }
4299
4300 void fio_option_mark_set(struct thread_options *o, struct fio_option *opt)
4301 {
4302         unsigned int opt_off, index, offset;
4303
4304         opt_off = opt - &fio_options[0];
4305         index = opt_off / (8 * sizeof(uint64_t));
4306         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4307         o->set_options[index] |= (uint64_t)1 << offset;
4308 }