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                 if (!ret)
 208                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
 209         }
 210
 211         free(p);
 212         return ret;
 213 }
 214
 215 static int str2error(char *str)
 216 {
 217         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 218                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 219                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 220                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 221                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 222                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 223                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 224                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
 225         int i = 0, num = sizeof(err) / sizeof(void *);
 226
 227         while (i < num) {
 228                 if (!strcmp(err[i], str))
 229                         return i + 1;
 230                 i++;
 231         }
 232         return 0;
 233 }
 234
 235 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 236 {
 237         unsigned int i;
 238         int *error;
 239         char *fname;
 240
 241         if (etype >= ERROR_TYPE_CNT) {
 242                 log_err("Illegal error type\n");
 243                 return 1;
 244         }
 245
 246         td->o.ignore_error_nr[etype] = 4;
 247         error = malloc(4 * sizeof(struct bssplit));
 248
 249         i = 0;
 250         while ((fname = strsep(&str, ":")) != NULL) {
 251
 252                 if (!strlen(fname))
 253                         break;
 254
 255                 /*
 256                  * grow struct buffer, if needed
 257                  */
 258                 if (i == td->o.ignore_error_nr[etype]) {
 259                         td->o.ignore_error_nr[etype] <<= 1;
 260                         error = realloc(error, td->o.ignore_error_nr[etype]
 261                                                   * sizeof(int));
 262                 }
 263                 if (fname[0] == 'E') {
 264                         error[i] = str2error(fname);
 265                 } else {
 266                         error[i] = atoi(fname);
 267                         if (error[i] < 0)
 268                                 error[i] = -error[i];
 269                 }
 270                 if (!error[i]) {
 271                         log_err("Unknown error %s, please use number value \n",
 272                                   fname);
 273                         free(error);
 274                         return 1;
 275                 }
 276                 i++;
 277         }
 278         if (i) {
 279                 td->o.continue_on_error |= 1 << etype;
 280                 td->o.ignore_error_nr[etype] = i;
 281                 td->o.ignore_error[etype] = error;
 282         } else
 283                 free(error);
 284
 285         return 0;
 286
 287 }
 288
 289 static int str_ignore_error_cb(void *data, const char *input)
 290 {
 291         struct thread_data *td = data;
 292         char *str, *p, *n;
 293         int type = 0, ret = 1;
 294
 295         if (parse_dryrun())
 296                 return 0;
 297
 298         p = str = strdup(input);
 299
 300         strip_blank_front(&str);
 301         strip_blank_end(str);
 302
 303         while (p) {
 304                 n = strchr(p, ',');
 305                 if (n)
 306                         *n++ = '\0';
 307                 ret = ignore_error_type(td, type, p);
 308                 if (ret)
 309                         break;
 310                 p = n;
 311                 type++;
 312         }
 313         free(str);
 314         return ret;
 315 }
 316
 317 static int str_rw_cb(void *data, const char *str)
 318 {
 319         struct thread_data *td = data;
 320         struct thread_options *o = &td->o;
 321         char *nr;
 322
 323         if (parse_dryrun())
 324                 return 0;
 325
 326         o->ddir_seq_nr = 1;
 327         o->ddir_seq_add = 0;
 328
 329         nr = get_opt_postfix(str);
 330         if (!nr)
 331                 return 0;
 332
 333         if (td_random(td))
 334                 o->ddir_seq_nr = atoi(nr);
 335         else {
 336                 long long val;
 337
 338                 if (str_to_decimal(nr, &val, 1, o, 0, 0)) {
 339                         log_err("fio: rw postfix parsing failed\n");
 340                         free(nr);
 341                         return 1;
 342                 }
 343
 344                 o->ddir_seq_add = val;
 345         }
 346
 347         free(nr);
 348         return 0;
 349 }
 350
 351 static int str_mem_cb(void *data, const char *mem)
 352 {
 353         struct thread_data *td = data;
 354
 355         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP ||
 356             td->o.mem_type == MEM_MMAPSHARED)
 357                 td->o.mmapfile = get_opt_postfix(mem);
 358
 359         return 0;
 360 }
 361
 362 static int fio_clock_source_cb(void *data, const char *str)
 363 {
 364         struct thread_data *td = data;
 365
 366         fio_clock_source = td->o.clocksource;
 367         fio_clock_source_set = 1;
 368         fio_clock_init();
 369         return 0;
 370 }
 371
 372 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 373 {
 374         struct thread_data *td = data;
 375
 376         td->o.rwmix[DDIR_READ] = *val;
 377         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 378         return 0;
 379 }
 380
 381 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 382 {
 383         struct thread_data *td = data;
 384
 385         td->o.rwmix[DDIR_WRITE] = *val;
 386         td->o.rwmix[DDIR_READ] = 100 - *val;
 387         return 0;
 388 }
 389
 390 static int str_exitall_cb(void)
 391 {
 392         exitall_on_terminate = 1;
 393         return 0;
 394 }
 395
 396 #ifdef FIO_HAVE_CPU_AFFINITY
 397 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
 398 {
 399         unsigned int i, index, cpus_in_mask;
 400         const long max_cpu = cpus_online();
 401
 402         cpus_in_mask = fio_cpu_count(mask);
 403         cpu_index = cpu_index % cpus_in_mask;
 404
 405         index = 0;
 406         for (i = 0; i < max_cpu; i++) {
 407                 if (!fio_cpu_isset(mask, i))
 408                         continue;
 409
 410                 if (cpu_index != index)
 411                         fio_cpu_clear(mask, i);
 412
 413                 index++;
 414         }
 415
 416         return fio_cpu_count(mask);
 417 }
 418
 419 static int str_cpumask_cb(void *data, unsigned long long *val)
 420 {
 421         struct thread_data *td = data;
 422         unsigned int i;
 423         long max_cpu;
 424         int ret;
 425
 426         if (parse_dryrun())
 427                 return 0;
 428
 429         ret = fio_cpuset_init(&td->o.cpumask);
 430         if (ret < 0) {
 431                 log_err("fio: cpuset_init failed\n");
 432                 td_verror(td, ret, "fio_cpuset_init");
 433                 return 1;
 434         }
 435
 436         max_cpu = cpus_online();
 437
 438         for (i = 0; i < sizeof(int) * 8; i++) {
 439                 if ((1 << i) & *val) {
 440                         if (i >= max_cpu) {
 441                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 442                                                                 max_cpu - 1);
 443                                 return 1;
 444                         }
 445                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 446                         fio_cpu_set(&td->o.cpumask, i);
 447                 }
 448         }
 449
 450         return 0;
 451 }
 452
 453 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 454                             const char *input)
 455 {
 456         char *cpu, *str, *p;
 457         long max_cpu;
 458         int ret = 0;
 459
 460         ret = fio_cpuset_init(mask);
 461         if (ret < 0) {
 462                 log_err("fio: cpuset_init failed\n");
 463                 td_verror(td, ret, "fio_cpuset_init");
 464                 return 1;
 465         }
 466
 467         p = str = strdup(input);
 468
 469         strip_blank_front(&str);
 470         strip_blank_end(str);
 471
 472         max_cpu = cpus_online();
 473
 474         while ((cpu = strsep(&str, ",")) != NULL) {
 475                 char *str2, *cpu2;
 476                 int icpu, icpu2;
 477
 478                 if (!strlen(cpu))
 479                         break;
 480
 481                 str2 = cpu;
 482                 icpu2 = -1;
 483                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 484                         if (!strlen(cpu2))
 485                                 break;
 486
 487                         icpu2 = atoi(cpu2);
 488                 }
 489
 490                 icpu = atoi(cpu);
 491                 if (icpu2 == -1)
 492                         icpu2 = icpu;
 493                 while (icpu <= icpu2) {
 494                         if (icpu >= FIO_MAX_CPUS) {
 495                                 log_err("fio: your OS only supports up to"
 496                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 497                                 ret = 1;
 498                                 break;
 499                         }
 500                         if (icpu >= max_cpu) {
 501                                 log_err("fio: CPU %d too large (max=%ld)\n",
 502                                                         icpu, max_cpu - 1);
 503                                 ret = 1;
 504                                 break;
 505                         }
 506
 507                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 508                         fio_cpu_set(mask, icpu);
 509                         icpu++;
 510                 }
 511                 if (ret)
 512                         break;
 513         }
 514
 515         free(p);
 516         return ret;
 517 }
 518
 519 static int str_cpus_allowed_cb(void *data, const char *input)
 520 {
 521         struct thread_data *td = data;
 522
 523         if (parse_dryrun())
 524                 return 0;
 525
 526         return set_cpus_allowed(td, &td->o.cpumask, input);
 527 }
 528
 529 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 530 {
 531         struct thread_data *td = data;
 532
 533         if (parse_dryrun())
 534                 return 0;
 535
 536         return set_cpus_allowed(td, &td->o.verify_cpumask, input);
 537 }
 538
 539 static int str_log_cpus_allowed_cb(void *data, const char *input)
 540 {
 541         struct thread_data *td = data;
 542
 543         if (parse_dryrun())
 544                 return 0;
 545
 546         return set_cpus_allowed(td, &td->o.log_gz_cpumask, input);
 547 }
 548
 549 #endif
 550
 551 #ifdef CONFIG_LIBNUMA
 552 static int str_numa_cpunodes_cb(void *data, char *input)
 553 {
 554         struct thread_data *td = data;
 555         struct bitmask *verify_bitmask;
 556
 557         if (parse_dryrun())
 558                 return 0;
 559
 560         /* numa_parse_nodestring() parses a character string list
 561          * of nodes into a bit mask. The bit mask is allocated by
 562          * numa_allocate_nodemask(), so it should be freed by
 563          * numa_free_nodemask().
 564          */
 565         verify_bitmask = numa_parse_nodestring(input);
 566         if (verify_bitmask == NULL) {
 567                 log_err("fio: numa_parse_nodestring failed\n");
 568                 td_verror(td, 1, "str_numa_cpunodes_cb");
 569                 return 1;
 570         }
 571         numa_free_nodemask(verify_bitmask);
 572
 573         td->o.numa_cpunodes = strdup(input);
 574         return 0;
 575 }
 576
 577 static int str_numa_mpol_cb(void *data, char *input)
 578 {
 579         struct thread_data *td = data;
 580         const char * const policy_types[] =
 581                 { "default", "prefer", "bind", "interleave", "local", NULL };
 582         int i;
 583         char *nodelist;
 584         struct bitmask *verify_bitmask;
 585
 586         if (parse_dryrun())
 587                 return 0;
 588
 589         nodelist = strchr(input, ':');
 590         if (nodelist) {
 591                 /* NUL-terminate mode */
 592                 *nodelist++ = '\0';
 593         }
 594
 595         for (i = 0; i <= MPOL_LOCAL; i++) {
 596                 if (!strcmp(input, policy_types[i])) {
 597                         td->o.numa_mem_mode = i;
 598                         break;
 599                 }
 600         }
 601         if (i > MPOL_LOCAL) {
 602                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 603                 goto out;
 604         }
 605
 606         switch (td->o.numa_mem_mode) {
 607         case MPOL_PREFERRED:
 608                 /*
 609                  * Insist on a nodelist of one node only
 610                  */
 611                 if (nodelist) {
 612                         char *rest = nodelist;
 613                         while (isdigit(*rest))
 614                                 rest++;
 615                         if (*rest) {
 616                                 log_err("fio: one node only for \'prefer\'\n");
 617                                 goto out;
 618                         }
 619                 } else {
 620                         log_err("fio: one node is needed for \'prefer\'\n");
 621                         goto out;
 622                 }
 623                 break;
 624         case MPOL_INTERLEAVE:
 625                 /*
 626                  * Default to online nodes with memory if no nodelist
 627                  */
 628                 if (!nodelist)
 629                         nodelist = strdup("all");
 630                 break;
 631         case MPOL_LOCAL:
 632         case MPOL_DEFAULT:
 633                 /*
 634                  * Don't allow a nodelist
 635                  */
 636                 if (nodelist) {
 637                         log_err("fio: NO nodelist for \'local\'\n");
 638                         goto out;
 639                 }
 640                 break;
 641         case MPOL_BIND:
 642                 /*
 643                  * Insist on a nodelist
 644                  */
 645                 if (!nodelist) {
 646                         log_err("fio: a nodelist is needed for \'bind\'\n");
 647                         goto out;
 648                 }
 649                 break;
 650         }
 651
 652
 653         /* numa_parse_nodestring() parses a character string list
 654          * of nodes into a bit mask. The bit mask is allocated by
 655          * numa_allocate_nodemask(), so it should be freed by
 656          * numa_free_nodemask().
 657          */
 658         switch (td->o.numa_mem_mode) {
 659         case MPOL_PREFERRED:
 660                 td->o.numa_mem_prefer_node = atoi(nodelist);
 661                 break;
 662         case MPOL_INTERLEAVE:
 663         case MPOL_BIND:
 664                 verify_bitmask = numa_parse_nodestring(nodelist);
 665                 if (verify_bitmask == NULL) {
 666                         log_err("fio: numa_parse_nodestring failed\n");
 667                         td_verror(td, 1, "str_numa_memnodes_cb");
 668                         return 1;
 669                 }
 670                 td->o.numa_memnodes = strdup(nodelist);
 671                 numa_free_nodemask(verify_bitmask);
 672
 673                 break;
 674         case MPOL_LOCAL:
 675         case MPOL_DEFAULT:
 676         default:
 677                 break;
 678         }
 679
 680         return 0;
 681 out:
 682         return 1;
 683 }
 684 #endif
 685
 686 static int str_fst_cb(void *data, const char *str)
 687 {
 688         struct thread_data *td = data;
 689         char *nr = get_opt_postfix(str);
 690
 691         td->file_service_nr = 1;
 692         if (nr) {
 693                 td->file_service_nr = atoi(nr);
 694                 free(nr);
 695         }
 696
 697         return 0;
 698 }
 699
 700 #ifdef CONFIG_SYNC_FILE_RANGE
 701 static int str_sfr_cb(void *data, const char *str)
 702 {
 703         struct thread_data *td = data;
 704         char *nr = get_opt_postfix(str);
 705
 706         td->sync_file_range_nr = 1;
 707         if (nr) {
 708                 td->sync_file_range_nr = atoi(nr);
 709                 free(nr);
 710         }
 711
 712         return 0;
 713 }
 714 #endif
 715
 716 static int str_random_distribution_cb(void *data, const char *str)
 717 {
 718         struct thread_data *td = data;
 719         double val;
 720         char *nr;
 721
 722         if (parse_dryrun())
 723                 return 0;
 724
 725         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 726                 val = FIO_DEF_ZIPF;
 727         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 728                 val = FIO_DEF_PARETO;
 729         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
 730                 val = 0.0;
 731         else
 732                 return 0;
 733
 734         nr = get_opt_postfix(str);
 735         if (nr && !str_to_float(nr, &val, 0)) {
 736                 log_err("fio: random postfix parsing failed\n");
 737                 free(nr);
 738                 return 1;
 739         }
 740
 741         free(nr);
 742
 743         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 744                 if (val == 1.00) {
 745                         log_err("fio: zipf theta must different than 1.0\n");
 746                         return 1;
 747                 }
 748                 td->o.zipf_theta.u.f = val;
 749         } else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) {
 750                 if (val <= 0.00 || val >= 1.00) {
 751                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 752                         return 1;
 753                 }
 754                 td->o.pareto_h.u.f = val;
 755         } else {
 756                 if (val <= 0.00 || val >= 100.0) {
 757                         log_err("fio: normal deviation out of range (0 < input < 100.0)\n");
 758                         return 1;
 759                 }
 760                 td->o.gauss_dev.u.f = val;
 761         }
 762
 763         return 0;
 764 }
 765
 766 /*
 767  * Return next name in the string. Files are separated with ':'. If the ':'
 768  * is escaped with a '\', then that ':' is part of the filename and does not
 769  * indicate a new file.
 770  */
 771 static char *get_next_name(char **ptr)
 772 {
 773         char *str = *ptr;
 774         char *p, *start;
 775
 776         if (!str || !strlen(str))
 777                 return NULL;
 778
 779         start = str;
 780         do {
 781                 /*
 782                  * No colon, we are done
 783                  */
 784                 p = strchr(str, ':');
 785                 if (!p) {
 786                         *ptr = NULL;
 787                         break;
 788                 }
 789
 790                 /*
 791                  * We got a colon, but it's the first character. Skip and
 792                  * continue
 793                  */
 794                 if (p == start) {
 795                         str = ++start;
 796                         continue;
 797                 }
 798
 799                 if (*(p - 1) != '\\') {
 800                         *p = '\0';
 801                         *ptr = p + 1;
 802                         break;
 803                 }
 804
 805                 memmove(p - 1, p, strlen(p) + 1);
 806                 str = p;
 807         } while (1);
 808
 809         return start;
 810 }
 811
 812
 813 static int get_max_name_idx(char *input)
 814 {
 815         unsigned int cur_idx;
 816         char *str, *p;
 817
 818         p = str = strdup(input);
 819         for (cur_idx = 0; ; cur_idx++)
 820                 if (get_next_name(&str) == NULL)
 821                         break;
 822
 823         free(p);
 824         return cur_idx;
 825 }
 826
 827 /*
 828  * Returns the directory at the index, indexes > entires will be
 829  * assigned via modulo division of the index
 830  */
 831 int set_name_idx(char *target, size_t tlen, char *input, int index)
 832 {
 833         unsigned int cur_idx;
 834         int len;
 835         char *fname, *str, *p;
 836
 837         p = str = strdup(input);
 838
 839         index %= get_max_name_idx(input);
 840         for (cur_idx = 0; cur_idx <= index; cur_idx++)
 841                 fname = get_next_name(&str);
 842
 843         if (client_sockaddr_str[0]) {
 844                 len = snprintf(target, tlen, "%s/%s.", fname,
 845                                 client_sockaddr_str);
 846         } else
 847                 len = snprintf(target, tlen, "%s/", fname);
 848
 849         target[tlen - 1] = '\0';
 850         free(p);
 851
 852         return len;
 853 }
 854
 855 static int str_filename_cb(void *data, const char *input)
 856 {
 857         struct thread_data *td = data;
 858         char *fname, *str, *p;
 859
 860         p = str = strdup(input);
 861
 862         strip_blank_front(&str);
 863         strip_blank_end(str);
 864
 865         if (!td->files_index)
 866                 td->o.nr_files = 0;
 867
 868         while ((fname = get_next_name(&str)) != NULL) {
 869                 if (!strlen(fname))
 870                         break;
 871                 add_file(td, fname, 0, 1);
 872         }
 873
 874         free(p);
 875         return 0;
 876 }
 877
 878 static int str_directory_cb(void *data, const char fio_unused *unused)
 879 {
 880         struct thread_data *td = data;
 881         struct stat sb;
 882         char *dirname, *str, *p;
 883         int ret = 0;
 884
 885         if (parse_dryrun())
 886                 return 0;
 887
 888         p = str = strdup(td->o.directory);
 889         while ((dirname = get_next_name(&str)) != NULL) {
 890                 if (lstat(dirname, &sb) < 0) {
 891                         ret = errno;
 892
 893                         log_err("fio: %s is not a directory\n", dirname);
 894                         td_verror(td, ret, "lstat");
 895                         goto out;
 896                 }
 897                 if (!S_ISDIR(sb.st_mode)) {
 898                         log_err("fio: %s is not a directory\n", dirname);
 899                         ret = 1;
 900                         goto out;
 901                 }
 902         }
 903
 904 out:
 905         free(p);
 906         return ret;
 907 }
 908
 909 static int str_opendir_cb(void *data, const char fio_unused *str)
 910 {
 911         struct thread_data *td = data;
 912
 913         if (parse_dryrun())
 914                 return 0;
 915
 916         if (!td->files_index)
 917                 td->o.nr_files = 0;
 918
 919         return add_dir_files(td, td->o.opendir);
 920 }
 921
 922 static int str_buffer_pattern_cb(void *data, const char *input)
 923 {
 924         struct thread_data *td = data;
 925         int ret;
 926
 927         /* FIXME: for now buffer pattern does not support formats */
 928         ret = parse_and_fill_pattern(input, strlen(input), td->o.buffer_pattern,
 929                                      MAX_PATTERN_SIZE, NULL, 0, NULL, NULL);
 930         if (ret < 0)
 931                 return 1;
 932
 933         assert(ret != 0);
 934         td->o.buffer_pattern_bytes = ret;
 935         if (!td->o.compress_percentage)
 936                 td->o.refill_buffers = 0;
 937         td->o.scramble_buffers = 0;
 938         td->o.zero_buffers = 0;
 939
 940         return 0;
 941 }
 942
 943 static int str_buffer_compress_cb(void *data, unsigned long long *il)
 944 {
 945         struct thread_data *td = data;
 946
 947         td->flags |= TD_F_COMPRESS;
 948         td->o.compress_percentage = *il;
 949         return 0;
 950 }
 951
 952 static int str_dedupe_cb(void *data, unsigned long long *il)
 953 {
 954         struct thread_data *td = data;
 955
 956         td->flags |= TD_F_COMPRESS;
 957         td->o.dedupe_percentage = *il;
 958         td->o.refill_buffers = 1;
 959         return 0;
 960 }
 961
 962 static int str_verify_pattern_cb(void *data, const char *input)
 963 {
 964         struct thread_data *td = data;
 965         int ret;
 966
 967         td->o.verify_fmt_sz = ARRAY_SIZE(td->o.verify_fmt);
 968         ret = parse_and_fill_pattern(input, strlen(input), td->o.verify_pattern,
 969                                      MAX_PATTERN_SIZE, fmt_desc, sizeof(fmt_desc),
 970                                      td->o.verify_fmt, &td->o.verify_fmt_sz);
 971         if (ret < 0)
 972                 return 1;
 973
 974         assert(ret != 0);
 975         td->o.verify_pattern_bytes = ret;
 976         /*
 977          * VERIFY_* could already be set
 978          */
 979         if (!fio_option_is_set(&td->o, verify))
 980                 td->o.verify = VERIFY_PATTERN;
 981
 982         return 0;
 983 }
 984
 985 static int str_gtod_reduce_cb(void *data, int *il)
 986 {
 987         struct thread_data *td = data;
 988         int val = *il;
 989
 990         td->o.disable_lat = !!val;
 991         td->o.disable_clat = !!val;
 992         td->o.disable_slat = !!val;
 993         td->o.disable_bw = !!val;
 994         td->o.clat_percentiles = !val;
 995         if (val)
 996                 td->tv_cache_mask = 63;
 997
 998         return 0;
 999 }
1000
1001 static int str_size_cb(void *data, unsigned long long *__val)
1002 {
1003         struct thread_data *td = data;
1004         unsigned long long v = *__val;
1005
1006         if (parse_is_percent(v)) {
1007                 td->o.size = 0;
1008                 td->o.size_percent = -1ULL - v;
1009         } else
1010                 td->o.size = v;
1011
1012         return 0;
1013 }
1014
1015 static int rw_verify(struct fio_option *o, void *data)
1016 {
1017         struct thread_data *td = data;
1018
1019         if (read_only && td_write(td)) {
1020                 log_err("fio: job <%s> has write bit set, but fio is in"
1021                         " read-only mode\n", td->o.name);
1022                 return 1;
1023         }
1024
1025         return 0;
1026 }
1027
1028 static int gtod_cpu_verify(struct fio_option *o, void *data)
1029 {
1030 #ifndef FIO_HAVE_CPU_AFFINITY
1031         struct thread_data *td = data;
1032
1033         if (td->o.gtod_cpu) {
1034                 log_err("fio: platform must support CPU affinity for"
1035                         "gettimeofday() offloading\n");
1036                 return 1;
1037         }
1038 #endif
1039
1040         return 0;
1041 }
1042
1043 /*
1044  * Option grouping
1045  */
1046 static struct opt_group fio_opt_groups[] = {
1047         {
1048                 .name   = "General",
1049                 .mask   = FIO_OPT_C_GENERAL,
1050         },
1051         {
1052                 .name   = "I/O",
1053                 .mask   = FIO_OPT_C_IO,
1054         },
1055         {
1056                 .name   = "File",
1057                 .mask   = FIO_OPT_C_FILE,
1058         },
1059         {
1060                 .name   = "Statistics",
1061                 .mask   = FIO_OPT_C_STAT,
1062         },
1063         {
1064                 .name   = "Logging",
1065                 .mask   = FIO_OPT_C_LOG,
1066         },
1067         {
1068                 .name   = "Profiles",
1069                 .mask   = FIO_OPT_C_PROFILE,
1070         },
1071         {
1072                 .name   = NULL,
1073         },
1074 };
1075
1076 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1077                                                unsigned int inv_mask)
1078 {
1079         struct opt_group *og;
1080         int i;
1081
1082         if (*mask == inv_mask || !*mask)
1083                 return NULL;
1084
1085         for (i = 0; ogs[i].name; i++) {
1086                 og = &ogs[i];
1087
1088                 if (*mask & og->mask) {
1089                         *mask &= ~(og->mask);
1090                         return og;
1091                 }
1092         }
1093
1094         return NULL;
1095 }
1096
1097 struct opt_group *opt_group_from_mask(unsigned int *mask)
1098 {
1099         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1100 }
1101
1102 static struct opt_group fio_opt_cat_groups[] = {
1103         {
1104                 .name   = "Latency profiling",
1105                 .mask   = FIO_OPT_G_LATPROF,
1106         },
1107         {
1108                 .name   = "Rate",
1109                 .mask   = FIO_OPT_G_RATE,
1110         },
1111         {
1112                 .name   = "Zone",
1113                 .mask   = FIO_OPT_G_ZONE,
1114         },
1115         {
1116                 .name   = "Read/write mix",
1117                 .mask   = FIO_OPT_G_RWMIX,
1118         },
1119         {
1120                 .name   = "Verify",
1121                 .mask   = FIO_OPT_G_VERIFY,
1122         },
1123         {
1124                 .name   = "Trim",
1125                 .mask   = FIO_OPT_G_TRIM,
1126         },
1127         {
1128                 .name   = "I/O Logging",
1129                 .mask   = FIO_OPT_G_IOLOG,
1130         },
1131         {
1132                 .name   = "I/O Depth",
1133                 .mask   = FIO_OPT_G_IO_DEPTH,
1134         },
1135         {
1136                 .name   = "I/O Flow",
1137                 .mask   = FIO_OPT_G_IO_FLOW,
1138         },
1139         {
1140                 .name   = "Description",
1141                 .mask   = FIO_OPT_G_DESC,
1142         },
1143         {
1144                 .name   = "Filename",
1145                 .mask   = FIO_OPT_G_FILENAME,
1146         },
1147         {
1148                 .name   = "General I/O",
1149                 .mask   = FIO_OPT_G_IO_BASIC,
1150         },
1151         {
1152                 .name   = "Cgroups",
1153                 .mask   = FIO_OPT_G_CGROUP,
1154         },
1155         {
1156                 .name   = "Runtime",
1157                 .mask   = FIO_OPT_G_RUNTIME,
1158         },
1159         {
1160                 .name   = "Process",
1161                 .mask   = FIO_OPT_G_PROCESS,
1162         },
1163         {
1164                 .name   = "Job credentials / priority",
1165                 .mask   = FIO_OPT_G_CRED,
1166         },
1167         {
1168                 .name   = "Clock settings",
1169                 .mask   = FIO_OPT_G_CLOCK,
1170         },
1171         {
1172                 .name   = "I/O Type",
1173                 .mask   = FIO_OPT_G_IO_TYPE,
1174         },
1175         {
1176                 .name   = "I/O Thinktime",
1177                 .mask   = FIO_OPT_G_THINKTIME,
1178         },
1179         {
1180                 .name   = "Randomizations",
1181                 .mask   = FIO_OPT_G_RANDOM,
1182         },
1183         {
1184                 .name   = "I/O buffers",
1185                 .mask   = FIO_OPT_G_IO_BUF,
1186         },
1187         {
1188                 .name   = "Tiobench profile",
1189                 .mask   = FIO_OPT_G_TIOBENCH,
1190         },
1191         {
1192                 .name   = "MTD",
1193                 .mask   = FIO_OPT_G_MTD,
1194         },
1195
1196         {
1197                 .name   = NULL,
1198         }
1199 };
1200
1201 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1202 {
1203         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1204 }
1205
1206 /*
1207  * Map of job/command line options
1208  */
1209 struct fio_option fio_options[FIO_MAX_OPTS] = {
1210         {
1211                 .name   = "description",
1212                 .lname  = "Description of job",
1213                 .type   = FIO_OPT_STR_STORE,
1214                 .off1   = td_var_offset(description),
1215                 .help   = "Text job description",
1216                 .category = FIO_OPT_C_GENERAL,
1217                 .group  = FIO_OPT_G_DESC,
1218         },
1219         {
1220                 .name   = "name",
1221                 .lname  = "Job name",
1222                 .type   = FIO_OPT_STR_STORE,
1223                 .off1   = td_var_offset(name),
1224                 .help   = "Name of this job",
1225                 .category = FIO_OPT_C_GENERAL,
1226                 .group  = FIO_OPT_G_DESC,
1227         },
1228         {
1229                 .name   = "filename",
1230                 .lname  = "Filename(s)",
1231                 .type   = FIO_OPT_STR_STORE,
1232                 .off1   = td_var_offset(filename),
1233                 .cb     = str_filename_cb,
1234                 .prio   = -1, /* must come after "directory" */
1235                 .help   = "File(s) to use for the workload",
1236                 .category = FIO_OPT_C_FILE,
1237                 .group  = FIO_OPT_G_FILENAME,
1238         },
1239         {
1240                 .name   = "directory",
1241                 .lname  = "Directory",
1242                 .type   = FIO_OPT_STR_STORE,
1243                 .off1   = td_var_offset(directory),
1244                 .cb     = str_directory_cb,
1245                 .help   = "Directory to store files in",
1246                 .category = FIO_OPT_C_FILE,
1247                 .group  = FIO_OPT_G_FILENAME,
1248         },
1249         {
1250                 .name   = "filename_format",
1251                 .type   = FIO_OPT_STR_STORE,
1252                 .off1   = td_var_offset(filename_format),
1253                 .prio   = -1, /* must come after "directory" */
1254                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1255                 .def    = "$jobname.$jobnum.$filenum",
1256                 .category = FIO_OPT_C_FILE,
1257                 .group  = FIO_OPT_G_FILENAME,
1258         },
1259         {
1260                 .name   = "lockfile",
1261                 .lname  = "Lockfile",
1262                 .type   = FIO_OPT_STR,
1263                 .off1   = td_var_offset(file_lock_mode),
1264                 .help   = "Lock file when doing IO to it",
1265                 .prio   = 1,
1266                 .parent = "filename",
1267                 .hide   = 0,
1268                 .def    = "none",
1269                 .category = FIO_OPT_C_FILE,
1270                 .group  = FIO_OPT_G_FILENAME,
1271                 .posval = {
1272                           { .ival = "none",
1273                             .oval = FILE_LOCK_NONE,
1274                             .help = "No file locking",
1275                           },
1276                           { .ival = "exclusive",
1277                             .oval = FILE_LOCK_EXCLUSIVE,
1278                             .help = "Exclusive file lock",
1279                           },
1280                           {
1281                             .ival = "readwrite",
1282                             .oval = FILE_LOCK_READWRITE,
1283                             .help = "Read vs write lock",
1284                           },
1285                 },
1286         },
1287         {
1288                 .name   = "opendir",
1289                 .lname  = "Open directory",
1290                 .type   = FIO_OPT_STR_STORE,
1291                 .off1   = td_var_offset(opendir),
1292                 .cb     = str_opendir_cb,
1293                 .help   = "Recursively add files from this directory and down",
1294                 .category = FIO_OPT_C_FILE,
1295                 .group  = FIO_OPT_G_FILENAME,
1296         },
1297         {
1298                 .name   = "rw",
1299                 .lname  = "Read/write",
1300                 .alias  = "readwrite",
1301                 .type   = FIO_OPT_STR,
1302                 .cb     = str_rw_cb,
1303                 .off1   = td_var_offset(td_ddir),
1304                 .help   = "IO direction",
1305                 .def    = "read",
1306                 .verify = rw_verify,
1307                 .category = FIO_OPT_C_IO,
1308                 .group  = FIO_OPT_G_IO_BASIC,
1309                 .posval = {
1310                           { .ival = "read",
1311                             .oval = TD_DDIR_READ,
1312                             .help = "Sequential read",
1313                           },
1314                           { .ival = "write",
1315                             .oval = TD_DDIR_WRITE,
1316                             .help = "Sequential write",
1317                           },
1318                           { .ival = "trim",
1319                             .oval = TD_DDIR_TRIM,
1320                             .help = "Sequential trim",
1321                           },
1322                           { .ival = "randread",
1323                             .oval = TD_DDIR_RANDREAD,
1324                             .help = "Random read",
1325                           },
1326                           { .ival = "randwrite",
1327                             .oval = TD_DDIR_RANDWRITE,
1328                             .help = "Random write",
1329                           },
1330                           { .ival = "randtrim",
1331                             .oval = TD_DDIR_RANDTRIM,
1332                             .help = "Random trim",
1333                           },
1334                           { .ival = "rw",
1335                             .oval = TD_DDIR_RW,
1336                             .help = "Sequential read and write mix",
1337                           },
1338                           { .ival = "readwrite",
1339                             .oval = TD_DDIR_RW,
1340                             .help = "Sequential read and write mix",
1341                           },
1342                           { .ival = "randrw",
1343                             .oval = TD_DDIR_RANDRW,
1344                             .help = "Random read and write mix"
1345                           },
1346                           { .ival = "trimwrite",
1347                             .oval = TD_DDIR_TRIMWRITE,
1348                             .help = "Trim and write mix, trims preceding writes"
1349                           },
1350                 },
1351         },
1352         {
1353                 .name   = "rw_sequencer",
1354                 .lname  = "RW Sequencer",
1355                 .type   = FIO_OPT_STR,
1356                 .off1   = td_var_offset(rw_seq),
1357                 .help   = "IO offset generator modifier",
1358                 .def    = "sequential",
1359                 .category = FIO_OPT_C_IO,
1360                 .group  = FIO_OPT_G_IO_BASIC,
1361                 .posval = {
1362                           { .ival = "sequential",
1363                             .oval = RW_SEQ_SEQ,
1364                             .help = "Generate sequential offsets",
1365                           },
1366                           { .ival = "identical",
1367                             .oval = RW_SEQ_IDENT,
1368                             .help = "Generate identical offsets",
1369                           },
1370                 },
1371         },
1372
1373         {
1374                 .name   = "ioengine",
1375                 .lname  = "IO Engine",
1376                 .type   = FIO_OPT_STR_STORE,
1377                 .off1   = td_var_offset(ioengine),
1378                 .help   = "IO engine to use",
1379                 .def    = FIO_PREFERRED_ENGINE,
1380                 .category = FIO_OPT_C_IO,
1381                 .group  = FIO_OPT_G_IO_BASIC,
1382                 .posval = {
1383                           { .ival = "sync",
1384                             .help = "Use read/write",
1385                           },
1386                           { .ival = "psync",
1387                             .help = "Use pread/pwrite",
1388                           },
1389                           { .ival = "vsync",
1390                             .help = "Use readv/writev",
1391                           },
1392 #ifdef CONFIG_PWRITEV
1393                           { .ival = "pvsync",
1394                             .help = "Use preadv/pwritev",
1395                           },
1396 #endif
1397 #ifdef CONFIG_LIBAIO
1398                           { .ival = "libaio",
1399                             .help = "Linux native asynchronous IO",
1400                           },
1401 #endif
1402 #ifdef CONFIG_POSIXAIO
1403                           { .ival = "posixaio",
1404                             .help = "POSIX asynchronous IO",
1405                           },
1406 #endif
1407 #ifdef CONFIG_SOLARISAIO
1408                           { .ival = "solarisaio",
1409                             .help = "Solaris native asynchronous IO",
1410                           },
1411 #endif
1412 #ifdef CONFIG_WINDOWSAIO
1413                           { .ival = "windowsaio",
1414                             .help = "Windows native asynchronous IO"
1415                           },
1416 #endif
1417 #ifdef CONFIG_RBD
1418                           { .ival = "rbd",
1419                             .help = "Rados Block Device asynchronous IO"
1420                           },
1421 #endif
1422                           { .ival = "mmap",
1423                             .help = "Memory mapped IO"
1424                           },
1425 #ifdef CONFIG_LINUX_SPLICE
1426                           { .ival = "splice",
1427                             .help = "splice/vmsplice based IO",
1428                           },
1429                           { .ival = "netsplice",
1430                             .help = "splice/vmsplice to/from the network",
1431                           },
1432 #endif
1433 #ifdef FIO_HAVE_SGIO
1434                           { .ival = "sg",
1435                             .help = "SCSI generic v3 IO",
1436                           },
1437 #endif
1438                           { .ival = "null",
1439                             .help = "Testing engine (no data transfer)",
1440                           },
1441                           { .ival = "net",
1442                             .help = "Network IO",
1443                           },
1444                           { .ival = "cpuio",
1445                             .help = "CPU cycle burner engine",
1446                           },
1447 #ifdef CONFIG_GUASI
1448                           { .ival = "guasi",
1449                             .help = "GUASI IO engine",
1450                           },
1451 #endif
1452 #ifdef FIO_HAVE_BINJECT
1453                           { .ival = "binject",
1454                             .help = "binject direct inject block engine",
1455                           },
1456 #endif
1457 #ifdef CONFIG_RDMA
1458                           { .ival = "rdma",
1459                             .help = "RDMA IO engine",
1460                           },
1461 #endif
1462 #ifdef CONFIG_FUSION_AW
1463                           { .ival = "fusion-aw-sync",
1464                             .help = "Fusion-io atomic write engine",
1465                           },
1466 #endif
1467 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1468                           { .ival = "e4defrag",
1469                             .help = "ext4 defrag engine",
1470                           },
1471 #endif
1472 #ifdef CONFIG_LINUX_FALLOCATE
1473                           { .ival = "falloc",
1474                             .help = "fallocate() file based engine",
1475                           },
1476 #endif
1477 #ifdef CONFIG_GFAPI
1478                           { .ival = "gfapi",
1479                             .help = "Glusterfs libgfapi(sync) based engine"
1480                           },
1481                           { .ival = "gfapi_async",
1482                             .help = "Glusterfs libgfapi(async) based engine"
1483                           },
1484 #endif
1485 #ifdef CONFIG_LIBHDFS
1486                           { .ival = "libhdfs",
1487                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1488                           },
1489 #endif
1490                           { .ival = "external",
1491                             .help = "Load external engine (append name)",
1492                           },
1493                 },
1494         },
1495         {
1496                 .name   = "iodepth",
1497                 .lname  = "IO Depth",
1498                 .type   = FIO_OPT_INT,
1499                 .off1   = td_var_offset(iodepth),
1500                 .help   = "Number of IO buffers to keep in flight",
1501                 .minval = 1,
1502                 .interval = 1,
1503                 .def    = "1",
1504                 .category = FIO_OPT_C_IO,
1505                 .group  = FIO_OPT_G_IO_BASIC,
1506         },
1507         {
1508                 .name   = "iodepth_batch",
1509                 .lname  = "IO Depth batch",
1510                 .alias  = "iodepth_batch_submit",
1511                 .type   = FIO_OPT_INT,
1512                 .off1   = td_var_offset(iodepth_batch),
1513                 .help   = "Number of IO buffers to submit in one go",
1514                 .parent = "iodepth",
1515                 .hide   = 1,
1516                 .minval = 1,
1517                 .interval = 1,
1518                 .def    = "1",
1519                 .category = FIO_OPT_C_IO,
1520                 .group  = FIO_OPT_G_IO_BASIC,
1521         },
1522         {
1523                 .name   = "iodepth_batch_complete_min",
1524                 .lname  = "Min IO depth batch complete",
1525                 .alias  = "iodepth_batch_complete",
1526                 .type   = FIO_OPT_INT,
1527                 .off1   = td_var_offset(iodepth_batch_complete_min),
1528                 .help   = "Min number of IO buffers to retrieve in one go",
1529                 .parent = "iodepth",
1530                 .hide   = 1,
1531                 .minval = 0,
1532                 .interval = 1,
1533                 .def    = "1",
1534                 .category = FIO_OPT_C_IO,
1535                 .group  = FIO_OPT_G_IO_BASIC,
1536         },
1537         {
1538                 .name   = "iodepth_batch_complete_max",
1539                 .lname  = "Max IO depth batch complete",
1540                 .type   = FIO_OPT_INT,
1541                 .off1   = td_var_offset(iodepth_batch_complete_max),
1542                 .help   = "Max number of IO buffers to retrieve in one go",
1543                 .parent = "iodepth",
1544                 .hide   = 1,
1545                 .minval = 0,
1546                 .interval = 1,
1547                 .category = FIO_OPT_C_IO,
1548                 .group  = FIO_OPT_G_IO_BASIC,
1549         },
1550         {
1551                 .name   = "iodepth_low",
1552                 .lname  = "IO Depth batch low",
1553                 .type   = FIO_OPT_INT,
1554                 .off1   = td_var_offset(iodepth_low),
1555                 .help   = "Low water mark for queuing depth",
1556                 .parent = "iodepth",
1557                 .hide   = 1,
1558                 .interval = 1,
1559                 .category = FIO_OPT_C_IO,
1560                 .group  = FIO_OPT_G_IO_BASIC,
1561         },
1562         {
1563                 .name   = "io_submit_mode",
1564                 .lname  = "IO submit mode",
1565                 .type   = FIO_OPT_STR,
1566                 .off1   = td_var_offset(io_submit_mode),
1567                 .help   = "How IO submissions and completions are done",
1568                 .def    = "inline",
1569                 .category = FIO_OPT_C_IO,
1570                 .group  = FIO_OPT_G_IO_BASIC,
1571                 .posval = {
1572                           { .ival = "inline",
1573                             .oval = IO_MODE_INLINE,
1574                             .help = "Submit and complete IO inline",
1575                           },
1576                           { .ival = "offload",
1577                             .oval = IO_MODE_OFFLOAD,
1578                             .help = "Offload submit and complete to threads",
1579                           },
1580                 },
1581         },
1582         {
1583                 .name   = "size",
1584                 .lname  = "Size",
1585                 .type   = FIO_OPT_STR_VAL,
1586                 .cb     = str_size_cb,
1587                 .off1   = td_var_offset(size),
1588                 .help   = "Total size of device or files",
1589                 .interval = 1024 * 1024,
1590                 .category = FIO_OPT_C_IO,
1591                 .group  = FIO_OPT_G_INVALID,
1592         },
1593         {
1594                 .name   = "io_size",
1595                 .alias  = "io_limit",
1596                 .lname  = "IO Size",
1597                 .type   = FIO_OPT_STR_VAL,
1598                 .off1   = td_var_offset(io_limit),
1599                 .interval = 1024 * 1024,
1600                 .category = FIO_OPT_C_IO,
1601                 .group  = FIO_OPT_G_INVALID,
1602         },
1603         {
1604                 .name   = "fill_device",
1605                 .lname  = "Fill device",
1606                 .alias  = "fill_fs",
1607                 .type   = FIO_OPT_BOOL,
1608                 .off1   = td_var_offset(fill_device),
1609                 .help   = "Write until an ENOSPC error occurs",
1610                 .def    = "0",
1611                 .category = FIO_OPT_C_FILE,
1612                 .group  = FIO_OPT_G_INVALID,
1613         },
1614         {
1615                 .name   = "filesize",
1616                 .lname  = "File size",
1617                 .type   = FIO_OPT_STR_VAL,
1618                 .off1   = td_var_offset(file_size_low),
1619                 .off2   = td_var_offset(file_size_high),
1620                 .minval = 1,
1621                 .help   = "Size of individual files",
1622                 .interval = 1024 * 1024,
1623                 .category = FIO_OPT_C_FILE,
1624                 .group  = FIO_OPT_G_INVALID,
1625         },
1626         {
1627                 .name   = "file_append",
1628                 .lname  = "File append",
1629                 .type   = FIO_OPT_BOOL,
1630                 .off1   = td_var_offset(file_append),
1631                 .help   = "IO will start at the end of the file(s)",
1632                 .def    = "0",
1633                 .category = FIO_OPT_C_FILE,
1634                 .group  = FIO_OPT_G_INVALID,
1635         },
1636         {
1637                 .name   = "offset",
1638                 .lname  = "IO offset",
1639                 .alias  = "fileoffset",
1640                 .type   = FIO_OPT_STR_VAL,
1641                 .off1   = td_var_offset(start_offset),
1642                 .help   = "Start IO from this offset",
1643                 .def    = "0",
1644                 .interval = 1024 * 1024,
1645                 .category = FIO_OPT_C_IO,
1646                 .group  = FIO_OPT_G_INVALID,
1647         },
1648         {
1649                 .name   = "offset_increment",
1650                 .lname  = "IO offset increment",
1651                 .type   = FIO_OPT_STR_VAL,
1652                 .off1   = td_var_offset(offset_increment),
1653                 .help   = "What is the increment from one offset to the next",
1654                 .parent = "offset",
1655                 .hide   = 1,
1656                 .def    = "0",
1657                 .interval = 1024 * 1024,
1658                 .category = FIO_OPT_C_IO,
1659                 .group  = FIO_OPT_G_INVALID,
1660         },
1661         {
1662                 .name   = "number_ios",
1663                 .lname  = "Number of IOs to perform",
1664                 .type   = FIO_OPT_STR_VAL,
1665                 .off1   = td_var_offset(number_ios),
1666                 .help   = "Force job completion after this number of IOs",
1667                 .def    = "0",
1668                 .category = FIO_OPT_C_IO,
1669                 .group  = FIO_OPT_G_INVALID,
1670         },
1671         {
1672                 .name   = "bs",
1673                 .lname  = "Block size",
1674                 .alias  = "blocksize",
1675                 .type   = FIO_OPT_INT,
1676                 .off1   = td_var_offset(bs[DDIR_READ]),
1677                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1678                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1679                 .minval = 1,
1680                 .help   = "Block size unit",
1681                 .def    = "4k",
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   = "ba",
1690                 .lname  = "Block size align",
1691                 .alias  = "blockalign",
1692                 .type   = FIO_OPT_INT,
1693                 .off1   = td_var_offset(ba[DDIR_READ]),
1694                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1695                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1696                 .minval = 1,
1697                 .help   = "IO block offset alignment",
1698                 .parent = "rw",
1699                 .hide   = 1,
1700                 .interval = 512,
1701                 .category = FIO_OPT_C_IO,
1702                 .group  = FIO_OPT_G_INVALID,
1703         },
1704         {
1705                 .name   = "bsrange",
1706                 .lname  = "Block size range",
1707                 .alias  = "blocksize_range",
1708                 .type   = FIO_OPT_RANGE,
1709                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1710                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1711                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1712                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1713                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1714                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1715                 .minval = 1,
1716                 .help   = "Set block size range (in more detail than bs)",
1717                 .parent = "rw",
1718                 .hide   = 1,
1719                 .interval = 4096,
1720                 .category = FIO_OPT_C_IO,
1721                 .group  = FIO_OPT_G_INVALID,
1722         },
1723         {
1724                 .name   = "bssplit",
1725                 .lname  = "Block size split",
1726                 .type   = FIO_OPT_STR,
1727                 .cb     = str_bssplit_cb,
1728                 .off1   = td_var_offset(bssplit),
1729                 .help   = "Set a specific mix of block sizes",
1730                 .parent = "rw",
1731                 .hide   = 1,
1732                 .category = FIO_OPT_C_IO,
1733                 .group  = FIO_OPT_G_INVALID,
1734         },
1735         {
1736                 .name   = "bs_unaligned",
1737                 .lname  = "Block size unaligned",
1738                 .alias  = "blocksize_unaligned",
1739                 .type   = FIO_OPT_STR_SET,
1740                 .off1   = td_var_offset(bs_unaligned),
1741                 .help   = "Don't sector align IO buffer sizes",
1742                 .parent = "rw",
1743                 .hide   = 1,
1744                 .category = FIO_OPT_C_IO,
1745                 .group  = FIO_OPT_G_INVALID,
1746         },
1747         {
1748                 .name   = "bs_is_seq_rand",
1749                 .lname  = "Block size division is seq/random (not read/write)",
1750                 .type   = FIO_OPT_BOOL,
1751                 .off1   = td_var_offset(bs_is_seq_rand),
1752                 .help   = "Consider any blocksize setting to be sequential,random",
1753                 .def    = "0",
1754                 .parent = "blocksize",
1755                 .category = FIO_OPT_C_IO,
1756                 .group  = FIO_OPT_G_INVALID,
1757         },
1758         {
1759                 .name   = "randrepeat",
1760                 .lname  = "Random repeatable",
1761                 .type   = FIO_OPT_BOOL,
1762                 .off1   = td_var_offset(rand_repeatable),
1763                 .help   = "Use repeatable random IO pattern",
1764                 .def    = "1",
1765                 .parent = "rw",
1766                 .hide   = 1,
1767                 .category = FIO_OPT_C_IO,
1768                 .group  = FIO_OPT_G_RANDOM,
1769         },
1770         {
1771                 .name   = "randseed",
1772                 .lname  = "The random generator seed",
1773                 .type   = FIO_OPT_STR_VAL,
1774                 .off1   = td_var_offset(rand_seed),
1775                 .help   = "Set the random generator seed value",
1776                 .def    = "0x89",
1777                 .parent = "rw",
1778                 .category = FIO_OPT_C_IO,
1779                 .group  = FIO_OPT_G_RANDOM,
1780         },
1781         {
1782                 .name   = "use_os_rand",
1783                 .lname  = "Use OS random",
1784                 .type   = FIO_OPT_DEPRECATED,
1785                 .off1   = td_var_offset(dep_use_os_rand),
1786                 .category = FIO_OPT_C_IO,
1787                 .group  = FIO_OPT_G_RANDOM,
1788         },
1789         {
1790                 .name   = "norandommap",
1791                 .lname  = "No randommap",
1792                 .type   = FIO_OPT_STR_SET,
1793                 .off1   = td_var_offset(norandommap),
1794                 .help   = "Accept potential duplicate random blocks",
1795                 .parent = "rw",
1796                 .hide   = 1,
1797                 .hide_on_set = 1,
1798                 .category = FIO_OPT_C_IO,
1799                 .group  = FIO_OPT_G_RANDOM,
1800         },
1801         {
1802                 .name   = "softrandommap",
1803                 .lname  = "Soft randommap",
1804                 .type   = FIO_OPT_BOOL,
1805                 .off1   = td_var_offset(softrandommap),
1806                 .help   = "Set norandommap if randommap allocation fails",
1807                 .parent = "norandommap",
1808                 .hide   = 1,
1809                 .def    = "0",
1810                 .category = FIO_OPT_C_IO,
1811                 .group  = FIO_OPT_G_RANDOM,
1812         },
1813         {
1814                 .name   = "random_generator",
1815                 .type   = FIO_OPT_STR,
1816                 .off1   = td_var_offset(random_generator),
1817                 .help   = "Type of random number generator to use",
1818                 .def    = "tausworthe",
1819                 .posval = {
1820                           { .ival = "tausworthe",
1821                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1822                             .help = "Strong Tausworthe generator",
1823                           },
1824                           { .ival = "lfsr",
1825                             .oval = FIO_RAND_GEN_LFSR,
1826                             .help = "Variable length LFSR",
1827                           },
1828                           {
1829                             .ival = "tausworthe64",
1830                             .oval = FIO_RAND_GEN_TAUSWORTHE64,
1831                             .help = "64-bit Tausworthe variant",
1832                           },
1833                 },
1834                 .category = FIO_OPT_C_IO,
1835                 .group  = FIO_OPT_G_RANDOM,
1836         },
1837         {
1838                 .name   = "random_distribution",
1839                 .type   = FIO_OPT_STR,
1840                 .off1   = td_var_offset(random_distribution),
1841                 .cb     = str_random_distribution_cb,
1842                 .help   = "Random offset distribution generator",
1843                 .def    = "random",
1844                 .posval = {
1845                           { .ival = "random",
1846                             .oval = FIO_RAND_DIST_RANDOM,
1847                             .help = "Completely random",
1848                           },
1849                           { .ival = "zipf",
1850                             .oval = FIO_RAND_DIST_ZIPF,
1851                             .help = "Zipf distribution",
1852                           },
1853                           { .ival = "pareto",
1854                             .oval = FIO_RAND_DIST_PARETO,
1855                             .help = "Pareto distribution",
1856                           },
1857                           { .ival = "normal",
1858                             .oval = FIO_RAND_DIST_GAUSS,
1859                             .help = "Normal (gaussian) distribution",
1860                           },
1861                 },
1862                 .category = FIO_OPT_C_IO,
1863                 .group  = FIO_OPT_G_RANDOM,
1864         },
1865         {
1866                 .name   = "percentage_random",
1867                 .lname  = "Percentage Random",
1868                 .type   = FIO_OPT_INT,
1869                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1870                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1871                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1872                 .maxval = 100,
1873                 .help   = "Percentage of seq/random mix that should be random",
1874                 .def    = "100,100,100",
1875                 .interval = 5,
1876                 .inverse = "percentage_sequential",
1877                 .category = FIO_OPT_C_IO,
1878                 .group  = FIO_OPT_G_RANDOM,
1879         },
1880         {
1881                 .name   = "percentage_sequential",
1882                 .lname  = "Percentage Sequential",
1883                 .type   = FIO_OPT_DEPRECATED,
1884                 .category = FIO_OPT_C_IO,
1885                 .group  = FIO_OPT_G_RANDOM,
1886         },
1887         {
1888                 .name   = "allrandrepeat",
1889                 .type   = FIO_OPT_BOOL,
1890                 .off1   = td_var_offset(allrand_repeatable),
1891                 .help   = "Use repeatable random numbers for everything",
1892                 .def    = "0",
1893                 .category = FIO_OPT_C_IO,
1894                 .group  = FIO_OPT_G_RANDOM,
1895         },
1896         {
1897                 .name   = "nrfiles",
1898                 .lname  = "Number of files",
1899                 .alias  = "nr_files",
1900                 .type   = FIO_OPT_INT,
1901                 .off1   = td_var_offset(nr_files),
1902                 .help   = "Split job workload between this number of files",
1903                 .def    = "1",
1904                 .interval = 1,
1905                 .category = FIO_OPT_C_FILE,
1906                 .group  = FIO_OPT_G_INVALID,
1907         },
1908         {
1909                 .name   = "openfiles",
1910                 .lname  = "Number of open files",
1911                 .type   = FIO_OPT_INT,
1912                 .off1   = td_var_offset(open_files),
1913                 .help   = "Number of files to keep open at the same time",
1914                 .category = FIO_OPT_C_FILE,
1915                 .group  = FIO_OPT_G_INVALID,
1916         },
1917         {
1918                 .name   = "file_service_type",
1919                 .lname  = "File service type",
1920                 .type   = FIO_OPT_STR,
1921                 .cb     = str_fst_cb,
1922                 .off1   = td_var_offset(file_service_type),
1923                 .help   = "How to select which file to service next",
1924                 .def    = "roundrobin",
1925                 .category = FIO_OPT_C_FILE,
1926                 .group  = FIO_OPT_G_INVALID,
1927                 .posval = {
1928                           { .ival = "random",
1929                             .oval = FIO_FSERVICE_RANDOM,
1930                             .help = "Choose a file at random",
1931                           },
1932                           { .ival = "roundrobin",
1933                             .oval = FIO_FSERVICE_RR,
1934                             .help = "Round robin select files",
1935                           },
1936                           { .ival = "sequential",
1937                             .oval = FIO_FSERVICE_SEQ,
1938                             .help = "Finish one file before moving to the next",
1939                           },
1940                 },
1941                 .parent = "nrfiles",
1942                 .hide   = 1,
1943         },
1944 #ifdef CONFIG_POSIX_FALLOCATE
1945         {
1946                 .name   = "fallocate",
1947                 .lname  = "Fallocate",
1948                 .type   = FIO_OPT_STR,
1949                 .off1   = td_var_offset(fallocate_mode),
1950                 .help   = "Whether pre-allocation is performed when laying out files",
1951                 .def    = "posix",
1952                 .category = FIO_OPT_C_FILE,
1953                 .group  = FIO_OPT_G_INVALID,
1954                 .posval = {
1955                           { .ival = "none",
1956                             .oval = FIO_FALLOCATE_NONE,
1957                             .help = "Do not pre-allocate space",
1958                           },
1959                           { .ival = "posix",
1960                             .oval = FIO_FALLOCATE_POSIX,
1961                             .help = "Use posix_fallocate()",
1962                           },
1963 #ifdef CONFIG_LINUX_FALLOCATE
1964                           { .ival = "keep",
1965                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1966                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1967                           },
1968 #endif
1969                           /* Compatibility with former boolean values */
1970                           { .ival = "0",
1971                             .oval = FIO_FALLOCATE_NONE,
1972                             .help = "Alias for 'none'",
1973                           },
1974                           { .ival = "1",
1975                             .oval = FIO_FALLOCATE_POSIX,
1976                             .help = "Alias for 'posix'",
1977                           },
1978                 },
1979         },
1980 #endif  /* CONFIG_POSIX_FALLOCATE */
1981         {
1982                 .name   = "fadvise_hint",
1983                 .lname  = "Fadvise hint",
1984                 .type   = FIO_OPT_BOOL,
1985                 .off1   = td_var_offset(fadvise_hint),
1986                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1987                 .def    = "1",
1988                 .category = FIO_OPT_C_FILE,
1989                 .group  = FIO_OPT_G_INVALID,
1990         },
1991 #ifdef FIO_HAVE_STREAMID
1992         {
1993                 .name   = "fadvise_stream",
1994                 .lname  = "Fadvise stream",
1995                 .type   = FIO_OPT_INT,
1996                 .off1   = td_var_offset(fadvise_stream),
1997                 .help   = "Use fadvise() to set stream ID",
1998                 .category = FIO_OPT_C_FILE,
1999                 .group  = FIO_OPT_G_INVALID,
2000         },
2001 #endif
2002         {
2003                 .name   = "fsync",
2004                 .lname  = "Fsync",
2005                 .type   = FIO_OPT_INT,
2006                 .off1   = td_var_offset(fsync_blocks),
2007                 .help   = "Issue fsync for writes every given number of blocks",
2008                 .def    = "0",
2009                 .interval = 1,
2010                 .category = FIO_OPT_C_FILE,
2011                 .group  = FIO_OPT_G_INVALID,
2012         },
2013         {
2014                 .name   = "fdatasync",
2015                 .lname  = "Fdatasync",
2016                 .type   = FIO_OPT_INT,
2017                 .off1   = td_var_offset(fdatasync_blocks),
2018                 .help   = "Issue fdatasync for writes every given number of blocks",
2019                 .def    = "0",
2020                 .interval = 1,
2021                 .category = FIO_OPT_C_FILE,
2022                 .group  = FIO_OPT_G_INVALID,
2023         },
2024         {
2025                 .name   = "write_barrier",
2026                 .lname  = "Write barrier",
2027                 .type   = FIO_OPT_INT,
2028                 .off1   = td_var_offset(barrier_blocks),
2029                 .help   = "Make every Nth write a barrier write",
2030                 .def    = "0",
2031                 .interval = 1,
2032                 .category = FIO_OPT_C_IO,
2033                 .group  = FIO_OPT_G_INVALID,
2034         },
2035 #ifdef CONFIG_SYNC_FILE_RANGE
2036         {
2037                 .name   = "sync_file_range",
2038                 .lname  = "Sync file range",
2039                 .posval = {
2040                           { .ival = "wait_before",
2041                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2042                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2043                             .orval  = 1,
2044                           },
2045                           { .ival = "write",
2046                             .oval = SYNC_FILE_RANGE_WRITE,
2047                             .help = "SYNC_FILE_RANGE_WRITE",
2048                             .orval  = 1,
2049                           },
2050                           {
2051                             .ival = "wait_after",
2052                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2053                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2054                             .orval  = 1,
2055                           },
2056                 },
2057                 .type   = FIO_OPT_STR_MULTI,
2058                 .cb     = str_sfr_cb,
2059                 .off1   = td_var_offset(sync_file_range),
2060                 .help   = "Use sync_file_range()",
2061                 .category = FIO_OPT_C_FILE,
2062                 .group  = FIO_OPT_G_INVALID,
2063         },
2064 #endif
2065         {
2066                 .name   = "direct",
2067                 .lname  = "Direct I/O",
2068                 .type   = FIO_OPT_BOOL,
2069                 .off1   = td_var_offset(odirect),
2070                 .help   = "Use O_DIRECT IO (negates buffered)",
2071                 .def    = "0",
2072                 .inverse = "buffered",
2073                 .category = FIO_OPT_C_IO,
2074                 .group  = FIO_OPT_G_IO_TYPE,
2075         },
2076         {
2077                 .name   = "atomic",
2078                 .lname  = "Atomic I/O",
2079                 .type   = FIO_OPT_BOOL,
2080                 .off1   = td_var_offset(oatomic),
2081                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2082                 .def    = "0",
2083                 .category = FIO_OPT_C_IO,
2084                 .group  = FIO_OPT_G_IO_TYPE,
2085         },
2086         {
2087                 .name   = "buffered",
2088                 .lname  = "Buffered I/O",
2089                 .type   = FIO_OPT_BOOL,
2090                 .off1   = td_var_offset(odirect),
2091                 .neg    = 1,
2092                 .help   = "Use buffered IO (negates direct)",
2093                 .def    = "1",
2094                 .inverse = "direct",
2095                 .category = FIO_OPT_C_IO,
2096                 .group  = FIO_OPT_G_IO_TYPE,
2097         },
2098         {
2099                 .name   = "overwrite",
2100                 .lname  = "Overwrite",
2101                 .type   = FIO_OPT_BOOL,
2102                 .off1   = td_var_offset(overwrite),
2103                 .help   = "When writing, set whether to overwrite current data",
2104                 .def    = "0",
2105                 .category = FIO_OPT_C_FILE,
2106                 .group  = FIO_OPT_G_INVALID,
2107         },
2108         {
2109                 .name   = "loops",
2110                 .lname  = "Loops",
2111                 .type   = FIO_OPT_INT,
2112                 .off1   = td_var_offset(loops),
2113                 .help   = "Number of times to run the job",
2114                 .def    = "1",
2115                 .interval = 1,
2116                 .category = FIO_OPT_C_GENERAL,
2117                 .group  = FIO_OPT_G_RUNTIME,
2118         },
2119         {
2120                 .name   = "numjobs",
2121                 .lname  = "Number of jobs",
2122                 .type   = FIO_OPT_INT,
2123                 .off1   = td_var_offset(numjobs),
2124                 .help   = "Duplicate this job this many times",
2125                 .def    = "1",
2126                 .interval = 1,
2127                 .category = FIO_OPT_C_GENERAL,
2128                 .group  = FIO_OPT_G_RUNTIME,
2129         },
2130         {
2131                 .name   = "startdelay",
2132                 .lname  = "Start delay",
2133                 .type   = FIO_OPT_STR_VAL_TIME,
2134                 .off1   = td_var_offset(start_delay),
2135                 .off2   = td_var_offset(start_delay_high),
2136                 .help   = "Only start job when this period has passed",
2137                 .def    = "0",
2138                 .is_seconds = 1,
2139                 .is_time = 1,
2140                 .category = FIO_OPT_C_GENERAL,
2141                 .group  = FIO_OPT_G_RUNTIME,
2142         },
2143         {
2144                 .name   = "runtime",
2145                 .lname  = "Runtime",
2146                 .alias  = "timeout",
2147                 .type   = FIO_OPT_STR_VAL_TIME,
2148                 .off1   = td_var_offset(timeout),
2149                 .help   = "Stop workload when this amount of time has passed",
2150                 .def    = "0",
2151                 .is_seconds = 1,
2152                 .is_time = 1,
2153                 .category = FIO_OPT_C_GENERAL,
2154                 .group  = FIO_OPT_G_RUNTIME,
2155         },
2156         {
2157                 .name   = "time_based",
2158                 .lname  = "Time based",
2159                 .type   = FIO_OPT_STR_SET,
2160                 .off1   = td_var_offset(time_based),
2161                 .help   = "Keep running until runtime/timeout is met",
2162                 .category = FIO_OPT_C_GENERAL,
2163                 .group  = FIO_OPT_G_RUNTIME,
2164         },
2165         {
2166                 .name   = "verify_only",
2167                 .lname  = "Verify only",
2168                 .type   = FIO_OPT_STR_SET,
2169                 .off1   = td_var_offset(verify_only),
2170                 .help   = "Verifies previously written data is still valid",
2171                 .category = FIO_OPT_C_GENERAL,
2172                 .group  = FIO_OPT_G_RUNTIME,
2173         },
2174         {
2175                 .name   = "ramp_time",
2176                 .lname  = "Ramp time",
2177                 .type   = FIO_OPT_STR_VAL_TIME,
2178                 .off1   = td_var_offset(ramp_time),
2179                 .help   = "Ramp up time before measuring performance",
2180                 .is_seconds = 1,
2181                 .is_time = 1,
2182                 .category = FIO_OPT_C_GENERAL,
2183                 .group  = FIO_OPT_G_RUNTIME,
2184         },
2185         {
2186                 .name   = "clocksource",
2187                 .lname  = "Clock source",
2188                 .type   = FIO_OPT_STR,
2189                 .cb     = fio_clock_source_cb,
2190                 .off1   = td_var_offset(clocksource),
2191                 .help   = "What type of timing source to use",
2192                 .category = FIO_OPT_C_GENERAL,
2193                 .group  = FIO_OPT_G_CLOCK,
2194                 .posval = {
2195 #ifdef CONFIG_GETTIMEOFDAY
2196                           { .ival = "gettimeofday",
2197                             .oval = CS_GTOD,
2198                             .help = "Use gettimeofday(2) for timing",
2199                           },
2200 #endif
2201 #ifdef CONFIG_CLOCK_GETTIME
2202                           { .ival = "clock_gettime",
2203                             .oval = CS_CGETTIME,
2204                             .help = "Use clock_gettime(2) for timing",
2205                           },
2206 #endif
2207 #ifdef ARCH_HAVE_CPU_CLOCK
2208                           { .ival = "cpu",
2209                             .oval = CS_CPUCLOCK,
2210                             .help = "Use CPU private clock",
2211                           },
2212 #endif
2213                 },
2214         },
2215         {
2216                 .name   = "mem",
2217                 .alias  = "iomem",
2218                 .lname  = "I/O Memory",
2219                 .type   = FIO_OPT_STR,
2220                 .cb     = str_mem_cb,
2221                 .off1   = td_var_offset(mem_type),
2222                 .help   = "Backing type for IO buffers",
2223                 .def    = "malloc",
2224                 .category = FIO_OPT_C_IO,
2225                 .group  = FIO_OPT_G_INVALID,
2226                 .posval = {
2227                           { .ival = "malloc",
2228                             .oval = MEM_MALLOC,
2229                             .help = "Use malloc(3) for IO buffers",
2230                           },
2231 #ifndef CONFIG_NO_SHM
2232                           { .ival = "shm",
2233                             .oval = MEM_SHM,
2234                             .help = "Use shared memory segments for IO buffers",
2235                           },
2236 #ifdef FIO_HAVE_HUGETLB
2237                           { .ival = "shmhuge",
2238                             .oval = MEM_SHMHUGE,
2239                             .help = "Like shm, but use huge pages",
2240                           },
2241 #endif
2242 #endif
2243                           { .ival = "mmap",
2244                             .oval = MEM_MMAP,
2245                             .help = "Use mmap(2) (file or anon) for IO buffers",
2246                           },
2247                           { .ival = "mmapshared",
2248                             .oval = MEM_MMAPSHARED,
2249                             .help = "Like mmap, but use the shared flag",
2250                           },
2251 #ifdef FIO_HAVE_HUGETLB
2252                           { .ival = "mmaphuge",
2253                             .oval = MEM_MMAPHUGE,
2254                             .help = "Like mmap, but use huge pages",
2255                           },
2256 #endif
2257                   },
2258         },
2259         {
2260                 .name   = "iomem_align",
2261                 .alias  = "mem_align",
2262                 .lname  = "I/O memory alignment",
2263                 .type   = FIO_OPT_INT,
2264                 .off1   = td_var_offset(mem_align),
2265                 .minval = 0,
2266                 .help   = "IO memory buffer offset alignment",
2267                 .def    = "0",
2268                 .parent = "iomem",
2269                 .hide   = 1,
2270                 .category = FIO_OPT_C_IO,
2271                 .group  = FIO_OPT_G_INVALID,
2272         },
2273         {
2274                 .name   = "verify",
2275                 .lname  = "Verify",
2276                 .type   = FIO_OPT_STR,
2277                 .off1   = td_var_offset(verify),
2278                 .help   = "Verify data written",
2279                 .def    = "0",
2280                 .category = FIO_OPT_C_IO,
2281                 .group  = FIO_OPT_G_VERIFY,
2282                 .posval = {
2283                           { .ival = "0",
2284                             .oval = VERIFY_NONE,
2285                             .help = "Don't do IO verification",
2286                           },
2287                           { .ival = "md5",
2288                             .oval = VERIFY_MD5,
2289                             .help = "Use md5 checksums for verification",
2290                           },
2291                           { .ival = "crc64",
2292                             .oval = VERIFY_CRC64,
2293                             .help = "Use crc64 checksums for verification",
2294                           },
2295                           { .ival = "crc32",
2296                             .oval = VERIFY_CRC32,
2297                             .help = "Use crc32 checksums for verification",
2298                           },
2299                           { .ival = "crc32c-intel",
2300                             .oval = VERIFY_CRC32C,
2301                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2302                           },
2303                           { .ival = "crc32c",
2304                             .oval = VERIFY_CRC32C,
2305                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2306                           },
2307                           { .ival = "crc16",
2308                             .oval = VERIFY_CRC16,
2309                             .help = "Use crc16 checksums for verification",
2310                           },
2311                           { .ival = "crc7",
2312                             .oval = VERIFY_CRC7,
2313                             .help = "Use crc7 checksums for verification",
2314                           },
2315                           { .ival = "sha1",
2316                             .oval = VERIFY_SHA1,
2317                             .help = "Use sha1 checksums for verification",
2318                           },
2319                           { .ival = "sha256",
2320                             .oval = VERIFY_SHA256,
2321                             .help = "Use sha256 checksums for verification",
2322                           },
2323                           { .ival = "sha512",
2324                             .oval = VERIFY_SHA512,
2325                             .help = "Use sha512 checksums for verification",
2326                           },
2327                           { .ival = "xxhash",
2328                             .oval = VERIFY_XXHASH,
2329                             .help = "Use xxhash checksums for verification",
2330                           },
2331                           /* Meta information was included into verify_header,
2332                            * 'meta' verification is implied by default. */
2333                           { .ival = "meta",
2334                             .oval = VERIFY_HDR_ONLY,
2335                             .help = "Use io information for verification. "
2336                                     "Now is implied by default, thus option is obsolete, "
2337                                     "don't use it",
2338                           },
2339                           { .ival = "pattern",
2340                             .oval = VERIFY_PATTERN_NO_HDR,
2341                             .help = "Verify strict pattern",
2342                           },
2343                           {
2344                             .ival = "null",
2345                             .oval = VERIFY_NULL,
2346                             .help = "Pretend to verify",
2347                           },
2348                 },
2349         },
2350         {
2351                 .name   = "do_verify",
2352                 .lname  = "Perform verify step",
2353                 .type   = FIO_OPT_BOOL,
2354                 .off1   = td_var_offset(do_verify),
2355                 .help   = "Run verification stage after write",
2356                 .def    = "1",
2357                 .parent = "verify",
2358                 .hide   = 1,
2359                 .category = FIO_OPT_C_IO,
2360                 .group  = FIO_OPT_G_VERIFY,
2361         },
2362         {
2363                 .name   = "verifysort",
2364                 .lname  = "Verify sort",
2365                 .type   = FIO_OPT_BOOL,
2366                 .off1   = td_var_offset(verifysort),
2367                 .help   = "Sort written verify blocks for read back",
2368                 .def    = "1",
2369                 .parent = "verify",
2370                 .hide   = 1,
2371                 .category = FIO_OPT_C_IO,
2372                 .group  = FIO_OPT_G_VERIFY,
2373         },
2374         {
2375                 .name   = "verifysort_nr",
2376                 .type   = FIO_OPT_INT,
2377                 .off1   = td_var_offset(verifysort_nr),
2378                 .help   = "Pre-load and sort verify blocks for a read workload",
2379                 .minval = 0,
2380                 .maxval = 131072,
2381                 .def    = "1024",
2382                 .parent = "verify",
2383                 .category = FIO_OPT_C_IO,
2384                 .group  = FIO_OPT_G_VERIFY,
2385         },
2386         {
2387                 .name   = "verify_interval",
2388                 .lname  = "Verify interval",
2389                 .type   = FIO_OPT_INT,
2390                 .off1   = td_var_offset(verify_interval),
2391                 .minval = 2 * sizeof(struct verify_header),
2392                 .help   = "Store verify buffer header every N bytes",
2393                 .parent = "verify",
2394                 .hide   = 1,
2395                 .interval = 2 * sizeof(struct verify_header),
2396                 .category = FIO_OPT_C_IO,
2397                 .group  = FIO_OPT_G_VERIFY,
2398         },
2399         {
2400                 .name   = "verify_offset",
2401                 .lname  = "Verify offset",
2402                 .type   = FIO_OPT_INT,
2403                 .help   = "Offset verify header location by N bytes",
2404                 .off1   = td_var_offset(verify_offset),
2405                 .minval = sizeof(struct verify_header),
2406                 .parent = "verify",
2407                 .hide   = 1,
2408                 .category = FIO_OPT_C_IO,
2409                 .group  = FIO_OPT_G_VERIFY,
2410         },
2411         {
2412                 .name   = "verify_pattern",
2413                 .lname  = "Verify pattern",
2414                 .type   = FIO_OPT_STR,
2415                 .cb     = str_verify_pattern_cb,
2416                 .off1   = td_var_offset(verify_pattern),
2417                 .help   = "Fill pattern for IO buffers",
2418                 .parent = "verify",
2419                 .hide   = 1,
2420                 .category = FIO_OPT_C_IO,
2421                 .group  = FIO_OPT_G_VERIFY,
2422         },
2423         {
2424                 .name   = "verify_fatal",
2425                 .lname  = "Verify fatal",
2426                 .type   = FIO_OPT_BOOL,
2427                 .off1   = td_var_offset(verify_fatal),
2428                 .def    = "0",
2429                 .help   = "Exit on a single verify failure, don't continue",
2430                 .parent = "verify",
2431                 .hide   = 1,
2432                 .category = FIO_OPT_C_IO,
2433                 .group  = FIO_OPT_G_VERIFY,
2434         },
2435         {
2436                 .name   = "verify_dump",
2437                 .lname  = "Verify dump",
2438                 .type   = FIO_OPT_BOOL,
2439                 .off1   = td_var_offset(verify_dump),
2440                 .def    = "0",
2441                 .help   = "Dump contents of good and bad blocks on failure",
2442                 .parent = "verify",
2443                 .hide   = 1,
2444                 .category = FIO_OPT_C_IO,
2445                 .group  = FIO_OPT_G_VERIFY,
2446         },
2447         {
2448                 .name   = "verify_async",
2449                 .lname  = "Verify asynchronously",
2450                 .type   = FIO_OPT_INT,
2451                 .off1   = td_var_offset(verify_async),
2452                 .def    = "0",
2453                 .help   = "Number of async verifier threads to use",
2454                 .parent = "verify",
2455                 .hide   = 1,
2456                 .category = FIO_OPT_C_IO,
2457                 .group  = FIO_OPT_G_VERIFY,
2458         },
2459         {
2460                 .name   = "verify_backlog",
2461                 .lname  = "Verify backlog",
2462                 .type   = FIO_OPT_STR_VAL,
2463                 .off1   = td_var_offset(verify_backlog),
2464                 .help   = "Verify after this number of blocks are written",
2465                 .parent = "verify",
2466                 .hide   = 1,
2467                 .category = FIO_OPT_C_IO,
2468                 .group  = FIO_OPT_G_VERIFY,
2469         },
2470         {
2471                 .name   = "verify_backlog_batch",
2472                 .lname  = "Verify backlog batch",
2473                 .type   = FIO_OPT_INT,
2474                 .off1   = td_var_offset(verify_batch),
2475                 .help   = "Verify this number of IO blocks",
2476                 .parent = "verify",
2477                 .hide   = 1,
2478                 .category = FIO_OPT_C_IO,
2479                 .group  = FIO_OPT_G_VERIFY,
2480         },
2481 #ifdef FIO_HAVE_CPU_AFFINITY
2482         {
2483                 .name   = "verify_async_cpus",
2484                 .lname  = "Async verify CPUs",
2485                 .type   = FIO_OPT_STR,
2486                 .cb     = str_verify_cpus_allowed_cb,
2487                 .off1   = td_var_offset(verify_cpumask),
2488                 .help   = "Set CPUs allowed for async verify threads",
2489                 .parent = "verify_async",
2490                 .hide   = 1,
2491                 .category = FIO_OPT_C_IO,
2492                 .group  = FIO_OPT_G_VERIFY,
2493         },
2494 #endif
2495         {
2496                 .name   = "experimental_verify",
2497                 .off1   = td_var_offset(experimental_verify),
2498                 .type   = FIO_OPT_BOOL,
2499                 .help   = "Enable experimental verification",
2500                 .parent = "verify",
2501                 .category = FIO_OPT_C_IO,
2502                 .group  = FIO_OPT_G_VERIFY,
2503         },
2504         {
2505                 .name   = "verify_state_load",
2506                 .lname  = "Load verify state",
2507                 .off1   = td_var_offset(verify_state),
2508                 .type   = FIO_OPT_BOOL,
2509                 .help   = "Load verify termination state",
2510                 .parent = "verify",
2511                 .category = FIO_OPT_C_IO,
2512                 .group  = FIO_OPT_G_VERIFY,
2513         },
2514         {
2515                 .name   = "verify_state_save",
2516                 .lname  = "Save verify state",
2517                 .off1   = td_var_offset(verify_state_save),
2518                 .type   = FIO_OPT_BOOL,
2519                 .def    = "1",
2520                 .help   = "Save verify state on termination",
2521                 .parent = "verify",
2522                 .category = FIO_OPT_C_IO,
2523                 .group  = FIO_OPT_G_VERIFY,
2524         },
2525 #ifdef FIO_HAVE_TRIM
2526         {
2527                 .name   = "trim_percentage",
2528                 .lname  = "Trim percentage",
2529                 .type   = FIO_OPT_INT,
2530                 .off1   = td_var_offset(trim_percentage),
2531                 .minval = 0,
2532                 .maxval = 100,
2533                 .help   = "Number of verify blocks to discard/trim",
2534                 .parent = "verify",
2535                 .def    = "0",
2536                 .interval = 1,
2537                 .hide   = 1,
2538                 .category = FIO_OPT_C_IO,
2539                 .group  = FIO_OPT_G_TRIM,
2540         },
2541         {
2542                 .name   = "trim_verify_zero",
2543                 .lname  = "Verify trim zero",
2544                 .type   = FIO_OPT_BOOL,
2545                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2546                 .off1   = td_var_offset(trim_zero),
2547                 .parent = "trim_percentage",
2548                 .hide   = 1,
2549                 .def    = "1",
2550                 .category = FIO_OPT_C_IO,
2551                 .group  = FIO_OPT_G_TRIM,
2552         },
2553         {
2554                 .name   = "trim_backlog",
2555                 .lname  = "Trim backlog",
2556                 .type   = FIO_OPT_STR_VAL,
2557                 .off1   = td_var_offset(trim_backlog),
2558                 .help   = "Trim after this number of blocks are written",
2559                 .parent = "trim_percentage",
2560                 .hide   = 1,
2561                 .interval = 1,
2562                 .category = FIO_OPT_C_IO,
2563                 .group  = FIO_OPT_G_TRIM,
2564         },
2565         {
2566                 .name   = "trim_backlog_batch",
2567                 .lname  = "Trim backlog batch",
2568                 .type   = FIO_OPT_INT,
2569                 .off1   = td_var_offset(trim_batch),
2570                 .help   = "Trim this number of IO blocks",
2571                 .parent = "trim_percentage",
2572                 .hide   = 1,
2573                 .interval = 1,
2574                 .category = FIO_OPT_C_IO,
2575                 .group  = FIO_OPT_G_TRIM,
2576         },
2577 #endif
2578         {
2579                 .name   = "write_iolog",
2580                 .lname  = "Write I/O log",
2581                 .type   = FIO_OPT_STR_STORE,
2582                 .off1   = td_var_offset(write_iolog_file),
2583                 .help   = "Store IO pattern to file",
2584                 .category = FIO_OPT_C_IO,
2585                 .group  = FIO_OPT_G_IOLOG,
2586         },
2587         {
2588                 .name   = "read_iolog",
2589                 .lname  = "Read I/O log",
2590                 .type   = FIO_OPT_STR_STORE,
2591                 .off1   = td_var_offset(read_iolog_file),
2592                 .help   = "Playback IO pattern from file",
2593                 .category = FIO_OPT_C_IO,
2594                 .group  = FIO_OPT_G_IOLOG,
2595         },
2596         {
2597                 .name   = "replay_no_stall",
2598                 .lname  = "Don't stall on replay",
2599                 .type   = FIO_OPT_BOOL,
2600                 .off1   = td_var_offset(no_stall),
2601                 .def    = "0",
2602                 .parent = "read_iolog",
2603                 .hide   = 1,
2604                 .help   = "Playback IO pattern file as fast as possible without stalls",
2605                 .category = FIO_OPT_C_IO,
2606                 .group  = FIO_OPT_G_IOLOG,
2607         },
2608         {
2609                 .name   = "replay_redirect",
2610                 .lname  = "Redirect device for replay",
2611                 .type   = FIO_OPT_STR_STORE,
2612                 .off1   = td_var_offset(replay_redirect),
2613                 .parent = "read_iolog",
2614                 .hide   = 1,
2615                 .help   = "Replay all I/O onto this device, regardless of trace device",
2616                 .category = FIO_OPT_C_IO,
2617                 .group  = FIO_OPT_G_IOLOG,
2618         },
2619         {
2620                 .name   = "replay_scale",
2621                 .lname  = "Replace offset scale factor",
2622                 .type   = FIO_OPT_INT,
2623                 .off1   = td_var_offset(replay_scale),
2624                 .parent = "read_iolog",
2625                 .def    = "1",
2626                 .help   = "Align offsets to this blocksize",
2627                 .category = FIO_OPT_C_IO,
2628                 .group  = FIO_OPT_G_IOLOG,
2629         },
2630         {
2631                 .name   = "replay_align",
2632                 .lname  = "Replace alignment",
2633                 .type   = FIO_OPT_INT,
2634                 .off1   = td_var_offset(replay_align),
2635                 .parent = "read_iolog",
2636                 .help   = "Scale offset down by this factor",
2637                 .category = FIO_OPT_C_IO,
2638                 .group  = FIO_OPT_G_IOLOG,
2639                 .pow2   = 1,
2640         },
2641         {
2642                 .name   = "exec_prerun",
2643                 .lname  = "Pre-execute runnable",
2644                 .type   = FIO_OPT_STR_STORE,
2645                 .off1   = td_var_offset(exec_prerun),
2646                 .help   = "Execute this file prior to running job",
2647                 .category = FIO_OPT_C_GENERAL,
2648                 .group  = FIO_OPT_G_INVALID,
2649         },
2650         {
2651                 .name   = "exec_postrun",
2652                 .lname  = "Post-execute runnable",
2653                 .type   = FIO_OPT_STR_STORE,
2654                 .off1   = td_var_offset(exec_postrun),
2655                 .help   = "Execute this file after running job",
2656                 .category = FIO_OPT_C_GENERAL,
2657                 .group  = FIO_OPT_G_INVALID,
2658         },
2659 #ifdef FIO_HAVE_IOSCHED_SWITCH
2660         {
2661                 .name   = "ioscheduler",
2662                 .lname  = "I/O scheduler",
2663                 .type   = FIO_OPT_STR_STORE,
2664                 .off1   = td_var_offset(ioscheduler),
2665                 .help   = "Use this IO scheduler on the backing device",
2666                 .category = FIO_OPT_C_FILE,
2667                 .group  = FIO_OPT_G_INVALID,
2668         },
2669 #endif
2670         {
2671                 .name   = "zonesize",
2672                 .lname  = "Zone size",
2673                 .type   = FIO_OPT_STR_VAL,
2674                 .off1   = td_var_offset(zone_size),
2675                 .help   = "Amount of data to read per zone",
2676                 .def    = "0",
2677                 .interval = 1024 * 1024,
2678                 .category = FIO_OPT_C_IO,
2679                 .group  = FIO_OPT_G_ZONE,
2680         },
2681         {
2682                 .name   = "zonerange",
2683                 .lname  = "Zone range",
2684                 .type   = FIO_OPT_STR_VAL,
2685                 .off1   = td_var_offset(zone_range),
2686                 .help   = "Give size of an IO zone",
2687                 .def    = "0",
2688                 .interval = 1024 * 1024,
2689                 .category = FIO_OPT_C_IO,
2690                 .group  = FIO_OPT_G_ZONE,
2691         },
2692         {
2693                 .name   = "zoneskip",
2694                 .lname  = "Zone skip",
2695                 .type   = FIO_OPT_STR_VAL,
2696                 .off1   = td_var_offset(zone_skip),
2697                 .help   = "Space between IO zones",
2698                 .def    = "0",
2699                 .interval = 1024 * 1024,
2700                 .category = FIO_OPT_C_IO,
2701                 .group  = FIO_OPT_G_ZONE,
2702         },
2703         {
2704                 .name   = "lockmem",
2705                 .lname  = "Lock memory",
2706                 .type   = FIO_OPT_STR_VAL,
2707                 .off1   = td_var_offset(lockmem),
2708                 .help   = "Lock down this amount of memory (per worker)",
2709                 .def    = "0",
2710                 .interval = 1024 * 1024,
2711                 .category = FIO_OPT_C_GENERAL,
2712                 .group  = FIO_OPT_G_INVALID,
2713         },
2714         {
2715                 .name   = "rwmixread",
2716                 .lname  = "Read/write mix read",
2717                 .type   = FIO_OPT_INT,
2718                 .cb     = str_rwmix_read_cb,
2719                 .off1   = td_var_offset(rwmix[DDIR_READ]),
2720                 .maxval = 100,
2721                 .help   = "Percentage of mixed workload that is reads",
2722                 .def    = "50",
2723                 .interval = 5,
2724                 .inverse = "rwmixwrite",
2725                 .category = FIO_OPT_C_IO,
2726                 .group  = FIO_OPT_G_RWMIX,
2727         },
2728         {
2729                 .name   = "rwmixwrite",
2730                 .lname  = "Read/write mix write",
2731                 .type   = FIO_OPT_INT,
2732                 .cb     = str_rwmix_write_cb,
2733                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
2734                 .maxval = 100,
2735                 .help   = "Percentage of mixed workload that is writes",
2736                 .def    = "50",
2737                 .interval = 5,
2738                 .inverse = "rwmixread",
2739                 .category = FIO_OPT_C_IO,
2740                 .group  = FIO_OPT_G_RWMIX,
2741         },
2742         {
2743                 .name   = "rwmixcycle",
2744                 .lname  = "Read/write mix cycle",
2745                 .type   = FIO_OPT_DEPRECATED,
2746                 .category = FIO_OPT_C_IO,
2747                 .group  = FIO_OPT_G_RWMIX,
2748         },
2749         {
2750                 .name   = "nice",
2751                 .lname  = "Nice",
2752                 .type   = FIO_OPT_INT,
2753                 .off1   = td_var_offset(nice),
2754                 .help   = "Set job CPU nice value",
2755                 .minval = -19,
2756                 .maxval = 20,
2757                 .def    = "0",
2758                 .interval = 1,
2759                 .category = FIO_OPT_C_GENERAL,
2760                 .group  = FIO_OPT_G_CRED,
2761         },
2762 #ifdef FIO_HAVE_IOPRIO
2763         {
2764                 .name   = "prio",
2765                 .lname  = "I/O nice priority",
2766                 .type   = FIO_OPT_INT,
2767                 .off1   = td_var_offset(ioprio),
2768                 .help   = "Set job IO priority value",
2769                 .minval = 0,
2770                 .maxval = 7,
2771                 .interval = 1,
2772                 .category = FIO_OPT_C_GENERAL,
2773                 .group  = FIO_OPT_G_CRED,
2774         },
2775         {
2776                 .name   = "prioclass",
2777                 .lname  = "I/O nice priority class",
2778                 .type   = FIO_OPT_INT,
2779                 .off1   = td_var_offset(ioprio_class),
2780                 .help   = "Set job IO priority class",
2781                 .minval = 0,
2782                 .maxval = 3,
2783                 .interval = 1,
2784                 .category = FIO_OPT_C_GENERAL,
2785                 .group  = FIO_OPT_G_CRED,
2786         },
2787 #endif
2788         {
2789                 .name   = "thinktime",
2790                 .lname  = "Thinktime",
2791                 .type   = FIO_OPT_INT,
2792                 .off1   = td_var_offset(thinktime),
2793                 .help   = "Idle time between IO buffers (usec)",
2794                 .def    = "0",
2795                 .is_time = 1,
2796                 .category = FIO_OPT_C_IO,
2797                 .group  = FIO_OPT_G_THINKTIME,
2798         },
2799         {
2800                 .name   = "thinktime_spin",
2801                 .lname  = "Thinktime spin",
2802                 .type   = FIO_OPT_INT,
2803                 .off1   = td_var_offset(thinktime_spin),
2804                 .help   = "Start think time by spinning this amount (usec)",
2805                 .def    = "0",
2806                 .is_time = 1,
2807                 .parent = "thinktime",
2808                 .hide   = 1,
2809                 .category = FIO_OPT_C_IO,
2810                 .group  = FIO_OPT_G_THINKTIME,
2811         },
2812         {
2813                 .name   = "thinktime_blocks",
2814                 .lname  = "Thinktime blocks",
2815                 .type   = FIO_OPT_INT,
2816                 .off1   = td_var_offset(thinktime_blocks),
2817                 .help   = "IO buffer period between 'thinktime'",
2818                 .def    = "1",
2819                 .parent = "thinktime",
2820                 .hide   = 1,
2821                 .category = FIO_OPT_C_IO,
2822                 .group  = FIO_OPT_G_THINKTIME,
2823         },
2824         {
2825                 .name   = "rate",
2826                 .lname  = "I/O rate",
2827                 .type   = FIO_OPT_INT,
2828                 .off1   = td_var_offset(rate[DDIR_READ]),
2829                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2830                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2831                 .help   = "Set bandwidth rate",
2832                 .category = FIO_OPT_C_IO,
2833                 .group  = FIO_OPT_G_RATE,
2834         },
2835         {
2836                 .name   = "rate_min",
2837                 .alias  = "ratemin",
2838                 .lname  = "I/O min rate",
2839                 .type   = FIO_OPT_INT,
2840                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2841                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2842                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2843                 .help   = "Job must meet this rate or it will be shutdown",
2844                 .parent = "rate",
2845                 .hide   = 1,
2846                 .category = FIO_OPT_C_IO,
2847                 .group  = FIO_OPT_G_RATE,
2848         },
2849         {
2850                 .name   = "rate_iops",
2851                 .lname  = "I/O rate IOPS",
2852                 .type   = FIO_OPT_INT,
2853                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2854                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2855                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2856                 .help   = "Limit IO used to this number of IO operations/sec",
2857                 .hide   = 1,
2858                 .category = FIO_OPT_C_IO,
2859                 .group  = FIO_OPT_G_RATE,
2860         },
2861         {
2862                 .name   = "rate_iops_min",
2863                 .lname  = "I/O min rate IOPS",
2864                 .type   = FIO_OPT_INT,
2865                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2866                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2867                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2868                 .help   = "Job must meet this rate or it will be shut down",
2869                 .parent = "rate_iops",
2870                 .hide   = 1,
2871                 .category = FIO_OPT_C_IO,
2872                 .group  = FIO_OPT_G_RATE,
2873         },
2874         {
2875                 .name   = "rate_process",
2876                 .lname  = "Rate Process",
2877                 .type   = FIO_OPT_STR,
2878                 .off1   = td_var_offset(rate_process),
2879                 .help   = "What process controls how rated IO is managed",
2880                 .def    = "linear",
2881                 .category = FIO_OPT_C_IO,
2882                 .group  = FIO_OPT_G_RATE,
2883                 .posval = {
2884                           { .ival = "linear",
2885                             .oval = RATE_PROCESS_LINEAR,
2886                             .help = "Linear rate of IO",
2887                           },
2888                           {
2889                             .ival = "poisson",
2890                             .oval = RATE_PROCESS_POISSON,
2891                             .help = "Rate follows Poisson process",
2892                           },
2893                 },
2894                 .parent = "rate",
2895         },
2896         {
2897                 .name   = "rate_cycle",
2898                 .alias  = "ratecycle",
2899                 .lname  = "I/O rate cycle",
2900                 .type   = FIO_OPT_INT,
2901                 .off1   = td_var_offset(ratecycle),
2902                 .help   = "Window average for rate limits (msec)",
2903                 .def    = "1000",
2904                 .parent = "rate",
2905                 .hide   = 1,
2906                 .category = FIO_OPT_C_IO,
2907                 .group  = FIO_OPT_G_RATE,
2908         },
2909         {
2910                 .name   = "max_latency",
2911                 .type   = FIO_OPT_INT,
2912                 .off1   = td_var_offset(max_latency),
2913                 .help   = "Maximum tolerated IO latency (usec)",
2914                 .is_time = 1,
2915                 .category = FIO_OPT_C_IO,
2916                 .group = FIO_OPT_G_LATPROF,
2917         },
2918         {
2919                 .name   = "latency_target",
2920                 .lname  = "Latency Target (usec)",
2921                 .type   = FIO_OPT_STR_VAL_TIME,
2922                 .off1   = td_var_offset(latency_target),
2923                 .help   = "Ramp to max queue depth supporting this latency",
2924                 .is_time = 1,
2925                 .category = FIO_OPT_C_IO,
2926                 .group  = FIO_OPT_G_LATPROF,
2927         },
2928         {
2929                 .name   = "latency_window",
2930                 .lname  = "Latency Window (usec)",
2931                 .type   = FIO_OPT_STR_VAL_TIME,
2932                 .off1   = td_var_offset(latency_window),
2933                 .help   = "Time to sustain latency_target",
2934                 .is_time = 1,
2935                 .category = FIO_OPT_C_IO,
2936                 .group  = FIO_OPT_G_LATPROF,
2937         },
2938         {
2939                 .name   = "latency_percentile",
2940                 .lname  = "Latency Percentile",
2941                 .type   = FIO_OPT_FLOAT_LIST,
2942                 .off1   = td_var_offset(latency_percentile),
2943                 .help   = "Percentile of IOs must be below latency_target",
2944                 .def    = "100",
2945                 .maxlen = 1,
2946                 .minfp  = 0.0,
2947                 .maxfp  = 100.0,
2948                 .category = FIO_OPT_C_IO,
2949                 .group  = FIO_OPT_G_LATPROF,
2950         },
2951         {
2952                 .name   = "invalidate",
2953                 .lname  = "Cache invalidate",
2954                 .type   = FIO_OPT_BOOL,
2955                 .off1   = td_var_offset(invalidate_cache),
2956                 .help   = "Invalidate buffer/page cache prior to running job",
2957                 .def    = "1",
2958                 .category = FIO_OPT_C_IO,
2959                 .group  = FIO_OPT_G_IO_TYPE,
2960         },
2961         {
2962                 .name   = "sync",
2963                 .lname  = "Synchronous I/O",
2964                 .type   = FIO_OPT_BOOL,
2965                 .off1   = td_var_offset(sync_io),
2966                 .help   = "Use O_SYNC for buffered writes",
2967                 .def    = "0",
2968                 .parent = "buffered",
2969                 .hide   = 1,
2970                 .category = FIO_OPT_C_IO,
2971                 .group  = FIO_OPT_G_IO_TYPE,
2972         },
2973         {
2974                 .name   = "create_serialize",
2975                 .lname  = "Create serialize",
2976                 .type   = FIO_OPT_BOOL,
2977                 .off1   = td_var_offset(create_serialize),
2978                 .help   = "Serialize creating of job files",
2979                 .def    = "1",
2980                 .category = FIO_OPT_C_FILE,
2981                 .group  = FIO_OPT_G_INVALID,
2982         },
2983         {
2984                 .name   = "create_fsync",
2985                 .lname  = "Create fsync",
2986                 .type   = FIO_OPT_BOOL,
2987                 .off1   = td_var_offset(create_fsync),
2988                 .help   = "fsync file after creation",
2989                 .def    = "1",
2990                 .category = FIO_OPT_C_FILE,
2991                 .group  = FIO_OPT_G_INVALID,
2992         },
2993         {
2994                 .name   = "create_on_open",
2995                 .lname  = "Create on open",
2996                 .type   = FIO_OPT_BOOL,
2997                 .off1   = td_var_offset(create_on_open),
2998                 .help   = "Create files when they are opened for IO",
2999                 .def    = "0",
3000                 .category = FIO_OPT_C_FILE,
3001                 .group  = FIO_OPT_G_INVALID,
3002         },
3003         {
3004                 .name   = "create_only",
3005                 .type   = FIO_OPT_BOOL,
3006                 .off1   = td_var_offset(create_only),
3007                 .help   = "Only perform file creation phase",
3008                 .category = FIO_OPT_C_FILE,
3009                 .def    = "0",
3010         },
3011         {
3012                 .name   = "allow_file_create",
3013                 .lname  = "Allow file create",
3014                 .type   = FIO_OPT_BOOL,
3015                 .off1   = td_var_offset(allow_create),
3016                 .help   = "Permit fio to create files, if they don't exist",
3017                 .def    = "1",
3018                 .category = FIO_OPT_C_FILE,
3019                 .group  = FIO_OPT_G_FILENAME,
3020         },
3021         {
3022                 .name   = "allow_mounted_write",
3023                 .lname  = "Allow mounted write",
3024                 .type   = FIO_OPT_BOOL,
3025                 .off1   = td_var_offset(allow_mounted_write),
3026                 .help   = "Allow writes to a mounted partition",
3027                 .def    = "0",
3028                 .category = FIO_OPT_C_FILE,
3029                 .group  = FIO_OPT_G_FILENAME,
3030         },
3031         {
3032                 .name   = "pre_read",
3033                 .lname  = "Pre-read files",
3034                 .type   = FIO_OPT_BOOL,
3035                 .off1   = td_var_offset(pre_read),
3036                 .help   = "Pre-read files before starting official testing",
3037                 .def    = "0",
3038                 .category = FIO_OPT_C_FILE,
3039                 .group  = FIO_OPT_G_INVALID,
3040         },
3041 #ifdef FIO_HAVE_CPU_AFFINITY
3042         {
3043                 .name   = "cpumask",
3044                 .lname  = "CPU mask",
3045                 .type   = FIO_OPT_INT,
3046                 .cb     = str_cpumask_cb,
3047                 .off1   = td_var_offset(cpumask),
3048                 .help   = "CPU affinity mask",
3049                 .category = FIO_OPT_C_GENERAL,
3050                 .group  = FIO_OPT_G_CRED,
3051         },
3052         {
3053                 .name   = "cpus_allowed",
3054                 .lname  = "CPUs allowed",
3055                 .type   = FIO_OPT_STR,
3056                 .cb     = str_cpus_allowed_cb,
3057                 .off1   = td_var_offset(cpumask),
3058                 .help   = "Set CPUs allowed",
3059                 .category = FIO_OPT_C_GENERAL,
3060                 .group  = FIO_OPT_G_CRED,
3061         },
3062         {
3063                 .name   = "cpus_allowed_policy",
3064                 .lname  = "CPUs allowed distribution policy",
3065                 .type   = FIO_OPT_STR,
3066                 .off1   = td_var_offset(cpus_allowed_policy),
3067                 .help   = "Distribution policy for cpus_allowed",
3068                 .parent = "cpus_allowed",
3069                 .prio   = 1,
3070                 .posval = {
3071                           { .ival = "shared",
3072                             .oval = FIO_CPUS_SHARED,
3073                             .help = "Mask shared between threads",
3074                           },
3075                           { .ival = "split",
3076                             .oval = FIO_CPUS_SPLIT,
3077                             .help = "Mask split between threads",
3078                           },
3079                 },
3080                 .category = FIO_OPT_C_GENERAL,
3081                 .group  = FIO_OPT_G_CRED,
3082         },
3083 #endif
3084 #ifdef CONFIG_LIBNUMA
3085         {
3086                 .name   = "numa_cpu_nodes",
3087                 .type   = FIO_OPT_STR,
3088                 .cb     = str_numa_cpunodes_cb,
3089                 .off1   = td_var_offset(numa_cpunodes),
3090                 .help   = "NUMA CPU nodes bind",
3091                 .category = FIO_OPT_C_GENERAL,
3092                 .group  = FIO_OPT_G_INVALID,
3093         },
3094         {
3095                 .name   = "numa_mem_policy",
3096                 .type   = FIO_OPT_STR,
3097                 .cb     = str_numa_mpol_cb,
3098                 .off1   = td_var_offset(numa_memnodes),
3099                 .help   = "NUMA memory policy setup",
3100                 .category = FIO_OPT_C_GENERAL,
3101                 .group  = FIO_OPT_G_INVALID,
3102         },
3103 #endif
3104         {
3105                 .name   = "end_fsync",
3106                 .lname  = "End fsync",
3107                 .type   = FIO_OPT_BOOL,
3108                 .off1   = td_var_offset(end_fsync),
3109                 .help   = "Include fsync at the end of job",
3110                 .def    = "0",
3111                 .category = FIO_OPT_C_FILE,
3112                 .group  = FIO_OPT_G_INVALID,
3113         },
3114         {
3115                 .name   = "fsync_on_close",
3116                 .lname  = "Fsync on close",
3117                 .type   = FIO_OPT_BOOL,
3118                 .off1   = td_var_offset(fsync_on_close),
3119                 .help   = "fsync files on close",
3120                 .def    = "0",
3121                 .category = FIO_OPT_C_FILE,
3122                 .group  = FIO_OPT_G_INVALID,
3123         },
3124         {
3125                 .name   = "unlink",
3126                 .lname  = "Unlink file",
3127                 .type   = FIO_OPT_BOOL,
3128                 .off1   = td_var_offset(unlink),
3129                 .help   = "Unlink created files after job has completed",
3130                 .def    = "0",
3131                 .category = FIO_OPT_C_FILE,
3132                 .group  = FIO_OPT_G_INVALID,
3133         },
3134         {
3135                 .name   = "exitall",
3136                 .lname  = "Exit-all on terminate",
3137                 .type   = FIO_OPT_STR_SET,
3138                 .cb     = str_exitall_cb,
3139                 .help   = "Terminate all jobs when one exits",
3140                 .category = FIO_OPT_C_GENERAL,
3141                 .group  = FIO_OPT_G_PROCESS,
3142         },
3143         {
3144                 .name   = "stonewall",
3145                 .lname  = "Wait for previous",
3146                 .alias  = "wait_for_previous",
3147                 .type   = FIO_OPT_STR_SET,
3148                 .off1   = td_var_offset(stonewall),
3149                 .help   = "Insert a hard barrier between this job and previous",
3150                 .category = FIO_OPT_C_GENERAL,
3151                 .group  = FIO_OPT_G_PROCESS,
3152         },
3153         {
3154                 .name   = "new_group",
3155                 .lname  = "New group",
3156                 .type   = FIO_OPT_STR_SET,
3157                 .off1   = td_var_offset(new_group),
3158                 .help   = "Mark the start of a new group (for reporting)",
3159                 .category = FIO_OPT_C_GENERAL,
3160                 .group  = FIO_OPT_G_PROCESS,
3161         },
3162         {
3163                 .name   = "thread",
3164                 .lname  = "Thread",
3165                 .type   = FIO_OPT_STR_SET,
3166                 .off1   = td_var_offset(use_thread),
3167                 .help   = "Use threads instead of processes",
3168 #ifdef CONFIG_NO_SHM
3169                 .def    = "1",
3170                 .no_warn_def = 1,
3171 #endif
3172                 .category = FIO_OPT_C_GENERAL,
3173                 .group  = FIO_OPT_G_PROCESS,
3174         },
3175         {
3176                 .name   = "per_job_logs",
3177                 .type   = FIO_OPT_BOOL,
3178                 .off1   = td_var_offset(per_job_logs),
3179                 .help   = "Include job number in generated log files or not",
3180                 .def    = "1",
3181                 .category = FIO_OPT_C_LOG,
3182                 .group  = FIO_OPT_G_INVALID,
3183         },
3184         {
3185                 .name   = "write_bw_log",
3186                 .lname  = "Write bandwidth log",
3187                 .type   = FIO_OPT_STR_STORE,
3188                 .off1   = td_var_offset(bw_log_file),
3189                 .help   = "Write log of bandwidth during run",
3190                 .category = FIO_OPT_C_LOG,
3191                 .group  = FIO_OPT_G_INVALID,
3192         },
3193         {
3194                 .name   = "write_lat_log",
3195                 .lname  = "Write latency log",
3196                 .type   = FIO_OPT_STR_STORE,
3197                 .off1   = td_var_offset(lat_log_file),
3198                 .help   = "Write log of latency during run",
3199                 .category = FIO_OPT_C_LOG,
3200                 .group  = FIO_OPT_G_INVALID,
3201         },
3202         {
3203                 .name   = "write_iops_log",
3204                 .lname  = "Write IOPS log",
3205                 .type   = FIO_OPT_STR_STORE,
3206                 .off1   = td_var_offset(iops_log_file),
3207                 .help   = "Write log of IOPS during run",
3208                 .category = FIO_OPT_C_LOG,
3209                 .group  = FIO_OPT_G_INVALID,
3210         },
3211         {
3212                 .name   = "log_avg_msec",
3213                 .lname  = "Log averaging (msec)",
3214                 .type   = FIO_OPT_INT,
3215                 .off1   = td_var_offset(log_avg_msec),
3216                 .help   = "Average bw/iops/lat logs over this period of time",
3217                 .def    = "0",
3218                 .category = FIO_OPT_C_LOG,
3219                 .group  = FIO_OPT_G_INVALID,
3220         },
3221         {
3222                 .name   = "log_offset",
3223                 .lname  = "Log offset of IO",
3224                 .type   = FIO_OPT_BOOL,
3225                 .off1   = td_var_offset(log_offset),
3226                 .help   = "Include offset of IO for each log entry",
3227                 .def    = "0",
3228                 .category = FIO_OPT_C_LOG,
3229                 .group  = FIO_OPT_G_INVALID,
3230         },
3231 #ifdef CONFIG_ZLIB
3232         {
3233                 .name   = "log_compression",
3234                 .lname  = "Log compression",
3235                 .type   = FIO_OPT_INT,
3236                 .off1   = td_var_offset(log_gz),
3237                 .help   = "Log in compressed chunks of this size",
3238                 .minval = 1024ULL,
3239                 .maxval = 512 * 1024 * 1024ULL,
3240                 .category = FIO_OPT_C_LOG,
3241                 .group  = FIO_OPT_G_INVALID,
3242         },
3243 #ifdef FIO_HAVE_CPU_AFFINITY
3244         {
3245                 .name   = "log_compression_cpus",
3246                 .lname  = "Log Compression CPUs",
3247                 .type   = FIO_OPT_STR,
3248                 .cb     = str_log_cpus_allowed_cb,
3249                 .off1   = td_var_offset(log_gz_cpumask),
3250                 .parent = "log_compression",
3251                 .help   = "Limit log compression to these CPUs",
3252                 .category = FIO_OPT_C_LOG,
3253                 .group  = FIO_OPT_G_INVALID,
3254         },
3255 #endif
3256         {
3257                 .name   = "log_store_compressed",
3258                 .lname  = "Log store compressed",
3259                 .type   = FIO_OPT_BOOL,
3260                 .off1   = td_var_offset(log_gz_store),
3261                 .help   = "Store logs in a compressed format",
3262                 .category = FIO_OPT_C_LOG,
3263                 .group  = FIO_OPT_G_INVALID,
3264         },
3265 #endif
3266         {
3267                 .name   = "block_error_percentiles",
3268                 .lname  = "Block error percentiles",
3269                 .type   = FIO_OPT_BOOL,
3270                 .off1   = td_var_offset(block_error_hist),
3271                 .help   = "Record trim block errors and make a histogram",
3272                 .def    = "0",
3273                 .category = FIO_OPT_C_LOG,
3274                 .group  = FIO_OPT_G_INVALID,
3275         },
3276         {
3277                 .name   = "bwavgtime",
3278                 .lname  = "Bandwidth average time",
3279                 .type   = FIO_OPT_INT,
3280                 .off1   = td_var_offset(bw_avg_time),
3281                 .help   = "Time window over which to calculate bandwidth"
3282                           " (msec)",
3283                 .def    = "500",
3284                 .parent = "write_bw_log",
3285                 .hide   = 1,
3286                 .interval = 100,
3287                 .category = FIO_OPT_C_LOG,
3288                 .group  = FIO_OPT_G_INVALID,
3289         },
3290         {
3291                 .name   = "iopsavgtime",
3292                 .lname  = "IOPS average time",
3293                 .type   = FIO_OPT_INT,
3294                 .off1   = td_var_offset(iops_avg_time),
3295                 .help   = "Time window over which to calculate IOPS (msec)",
3296                 .def    = "500",
3297                 .parent = "write_iops_log",
3298                 .hide   = 1,
3299                 .interval = 100,
3300                 .category = FIO_OPT_C_LOG,
3301                 .group  = FIO_OPT_G_INVALID,
3302         },
3303         {
3304                 .name   = "group_reporting",
3305                 .lname  = "Group reporting",
3306                 .type   = FIO_OPT_STR_SET,
3307                 .off1   = td_var_offset(group_reporting),
3308                 .help   = "Do reporting on a per-group basis",
3309                 .category = FIO_OPT_C_STAT,
3310                 .group  = FIO_OPT_G_INVALID,
3311         },
3312         {
3313                 .name   = "zero_buffers",
3314                 .lname  = "Zero I/O buffers",
3315                 .type   = FIO_OPT_STR_SET,
3316                 .off1   = td_var_offset(zero_buffers),
3317                 .help   = "Init IO buffers to all zeroes",
3318                 .category = FIO_OPT_C_IO,
3319                 .group  = FIO_OPT_G_IO_BUF,
3320         },
3321         {
3322                 .name   = "refill_buffers",
3323                 .lname  = "Refill I/O buffers",
3324                 .type   = FIO_OPT_STR_SET,
3325                 .off1   = td_var_offset(refill_buffers),
3326                 .help   = "Refill IO buffers on every IO submit",
3327                 .category = FIO_OPT_C_IO,
3328                 .group  = FIO_OPT_G_IO_BUF,
3329         },
3330         {
3331                 .name   = "scramble_buffers",
3332                 .lname  = "Scramble I/O buffers",
3333                 .type   = FIO_OPT_BOOL,
3334                 .off1   = td_var_offset(scramble_buffers),
3335                 .help   = "Slightly scramble buffers on every IO submit",
3336                 .def    = "1",
3337                 .category = FIO_OPT_C_IO,
3338                 .group  = FIO_OPT_G_IO_BUF,
3339         },
3340         {
3341                 .name   = "buffer_pattern",
3342                 .lname  = "Buffer pattern",
3343                 .type   = FIO_OPT_STR,
3344                 .cb     = str_buffer_pattern_cb,
3345                 .off1   = td_var_offset(buffer_pattern),
3346                 .help   = "Fill pattern for IO buffers",
3347                 .category = FIO_OPT_C_IO,
3348                 .group  = FIO_OPT_G_IO_BUF,
3349         },
3350         {
3351                 .name   = "buffer_compress_percentage",
3352                 .lname  = "Buffer compression percentage",
3353                 .type   = FIO_OPT_INT,
3354                 .cb     = str_buffer_compress_cb,
3355                 .off1   = td_var_offset(compress_percentage),
3356                 .maxval = 100,
3357                 .minval = 0,
3358                 .help   = "How compressible the buffer is (approximately)",
3359                 .interval = 5,
3360                 .category = FIO_OPT_C_IO,
3361                 .group  = FIO_OPT_G_IO_BUF,
3362         },
3363         {
3364                 .name   = "buffer_compress_chunk",
3365                 .lname  = "Buffer compression chunk size",
3366                 .type   = FIO_OPT_INT,
3367                 .off1   = td_var_offset(compress_chunk),
3368                 .parent = "buffer_compress_percentage",
3369                 .hide   = 1,
3370                 .help   = "Size of compressible region in buffer",
3371                 .interval = 256,
3372                 .category = FIO_OPT_C_IO,
3373                 .group  = FIO_OPT_G_IO_BUF,
3374         },
3375         {
3376                 .name   = "dedupe_percentage",
3377                 .lname  = "Dedupe percentage",
3378                 .type   = FIO_OPT_INT,
3379                 .cb     = str_dedupe_cb,
3380                 .off1   = td_var_offset(dedupe_percentage),
3381                 .maxval = 100,
3382                 .minval = 0,
3383                 .help   = "Percentage of buffers that are dedupable",
3384                 .interval = 1,
3385                 .category = FIO_OPT_C_IO,
3386                 .group  = FIO_OPT_G_IO_BUF,
3387         },
3388         {
3389                 .name   = "clat_percentiles",
3390                 .lname  = "Completion latency percentiles",
3391                 .type   = FIO_OPT_BOOL,
3392                 .off1   = td_var_offset(clat_percentiles),
3393                 .help   = "Enable the reporting of completion latency percentiles",
3394                 .def    = "1",
3395                 .category = FIO_OPT_C_STAT,
3396                 .group  = FIO_OPT_G_INVALID,
3397         },
3398         {
3399                 .name   = "percentile_list",
3400                 .lname  = "Percentile list",
3401                 .type   = FIO_OPT_FLOAT_LIST,
3402                 .off1   = td_var_offset(percentile_list),
3403                 .off2   = td_var_offset(percentile_precision),
3404                 .help   = "Specify a custom list of percentiles to report for "
3405                           "completion latency and block errors",
3406                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3407                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3408                 .minfp  = 0.0,
3409                 .maxfp  = 100.0,
3410                 .category = FIO_OPT_C_STAT,
3411                 .group  = FIO_OPT_G_INVALID,
3412         },
3413
3414 #ifdef FIO_HAVE_DISK_UTIL
3415         {
3416                 .name   = "disk_util",
3417                 .lname  = "Disk utilization",
3418                 .type   = FIO_OPT_BOOL,
3419                 .off1   = td_var_offset(do_disk_util),
3420                 .help   = "Log disk utilization statistics",
3421                 .def    = "1",
3422                 .category = FIO_OPT_C_STAT,
3423                 .group  = FIO_OPT_G_INVALID,
3424         },
3425 #endif
3426         {
3427                 .name   = "gtod_reduce",
3428                 .lname  = "Reduce gettimeofday() calls",
3429                 .type   = FIO_OPT_BOOL,
3430                 .help   = "Greatly reduce number of gettimeofday() calls",
3431                 .cb     = str_gtod_reduce_cb,
3432                 .def    = "0",
3433                 .hide_on_set = 1,
3434                 .category = FIO_OPT_C_STAT,
3435                 .group  = FIO_OPT_G_INVALID,
3436         },
3437         {
3438                 .name   = "disable_lat",
3439                 .lname  = "Disable all latency stats",
3440                 .type   = FIO_OPT_BOOL,
3441                 .off1   = td_var_offset(disable_lat),
3442                 .help   = "Disable latency numbers",
3443                 .parent = "gtod_reduce",
3444                 .hide   = 1,
3445                 .def    = "0",
3446                 .category = FIO_OPT_C_STAT,
3447                 .group  = FIO_OPT_G_INVALID,
3448         },
3449         {
3450                 .name   = "disable_clat",
3451                 .lname  = "Disable completion latency stats",
3452                 .type   = FIO_OPT_BOOL,
3453                 .off1   = td_var_offset(disable_clat),
3454                 .help   = "Disable completion latency numbers",
3455                 .parent = "gtod_reduce",
3456                 .hide   = 1,
3457                 .def    = "0",
3458                 .category = FIO_OPT_C_STAT,
3459                 .group  = FIO_OPT_G_INVALID,
3460         },
3461         {
3462                 .name   = "disable_slat",
3463                 .lname  = "Disable submission latency stats",
3464                 .type   = FIO_OPT_BOOL,
3465                 .off1   = td_var_offset(disable_slat),
3466                 .help   = "Disable submission latency numbers",
3467                 .parent = "gtod_reduce",
3468                 .hide   = 1,
3469                 .def    = "0",
3470                 .category = FIO_OPT_C_STAT,
3471                 .group  = FIO_OPT_G_INVALID,
3472         },
3473         {
3474                 .name   = "disable_bw_measurement",
3475                 .lname  = "Disable bandwidth stats",
3476                 .type   = FIO_OPT_BOOL,
3477                 .off1   = td_var_offset(disable_bw),
3478                 .help   = "Disable bandwidth logging",
3479                 .parent = "gtod_reduce",
3480                 .hide   = 1,
3481                 .def    = "0",
3482                 .category = FIO_OPT_C_STAT,
3483                 .group  = FIO_OPT_G_INVALID,
3484         },
3485         {
3486                 .name   = "gtod_cpu",
3487                 .lname  = "Dedicated gettimeofday() CPU",
3488                 .type   = FIO_OPT_INT,
3489                 .off1   = td_var_offset(gtod_cpu),
3490                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3491                 .verify = gtod_cpu_verify,
3492                 .category = FIO_OPT_C_GENERAL,
3493                 .group  = FIO_OPT_G_CLOCK,
3494         },
3495         {
3496                 .name   = "unified_rw_reporting",
3497                 .type   = FIO_OPT_BOOL,
3498                 .off1   = td_var_offset(unified_rw_rep),
3499                 .help   = "Unify reporting across data direction",
3500                 .def    = "0",
3501                 .category = FIO_OPT_C_GENERAL,
3502                 .group  = FIO_OPT_G_INVALID,
3503         },
3504         {
3505                 .name   = "continue_on_error",
3506                 .lname  = "Continue on error",
3507                 .type   = FIO_OPT_STR,
3508                 .off1   = td_var_offset(continue_on_error),
3509                 .help   = "Continue on non-fatal errors during IO",
3510                 .def    = "none",
3511                 .category = FIO_OPT_C_GENERAL,
3512                 .group  = FIO_OPT_G_ERR,
3513                 .posval = {
3514                           { .ival = "none",
3515                             .oval = ERROR_TYPE_NONE,
3516                             .help = "Exit when an error is encountered",
3517                           },
3518                           { .ival = "read",
3519                             .oval = ERROR_TYPE_READ,
3520                             .help = "Continue on read errors only",
3521                           },
3522                           { .ival = "write",
3523                             .oval = ERROR_TYPE_WRITE,
3524                             .help = "Continue on write errors only",
3525                           },
3526                           { .ival = "io",
3527                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3528                             .help = "Continue on any IO errors",
3529                           },
3530                           { .ival = "verify",
3531                             .oval = ERROR_TYPE_VERIFY,
3532                             .help = "Continue on verify errors only",
3533                           },
3534                           { .ival = "all",
3535                             .oval = ERROR_TYPE_ANY,
3536                             .help = "Continue on all io and verify errors",
3537                           },
3538                           { .ival = "0",
3539                             .oval = ERROR_TYPE_NONE,
3540                             .help = "Alias for 'none'",
3541                           },
3542                           { .ival = "1",
3543                             .oval = ERROR_TYPE_ANY,
3544                             .help = "Alias for 'all'",
3545                           },
3546                 },
3547         },
3548         {
3549                 .name   = "ignore_error",
3550                 .type   = FIO_OPT_STR,
3551                 .cb     = str_ignore_error_cb,
3552                 .off1   = td_var_offset(ignore_error_nr),
3553                 .help   = "Set a specific list of errors to ignore",
3554                 .parent = "rw",
3555                 .category = FIO_OPT_C_GENERAL,
3556                 .group  = FIO_OPT_G_ERR,
3557         },
3558         {
3559                 .name   = "error_dump",
3560                 .type   = FIO_OPT_BOOL,
3561                 .off1   = td_var_offset(error_dump),
3562                 .def    = "0",
3563                 .help   = "Dump info on each error",
3564                 .category = FIO_OPT_C_GENERAL,
3565                 .group  = FIO_OPT_G_ERR,
3566         },
3567         {
3568                 .name   = "profile",
3569                 .lname  = "Profile",
3570                 .type   = FIO_OPT_STR_STORE,
3571                 .off1   = td_var_offset(profile),
3572                 .help   = "Select a specific builtin performance test",
3573                 .category = FIO_OPT_C_PROFILE,
3574                 .group  = FIO_OPT_G_INVALID,
3575         },
3576         {
3577                 .name   = "cgroup",
3578                 .lname  = "Cgroup",
3579                 .type   = FIO_OPT_STR_STORE,
3580                 .off1   = td_var_offset(cgroup),
3581                 .help   = "Add job to cgroup of this name",
3582                 .category = FIO_OPT_C_GENERAL,
3583                 .group  = FIO_OPT_G_CGROUP,
3584         },
3585         {
3586                 .name   = "cgroup_nodelete",
3587                 .lname  = "Cgroup no-delete",
3588                 .type   = FIO_OPT_BOOL,
3589                 .off1   = td_var_offset(cgroup_nodelete),
3590                 .help   = "Do not delete cgroups after job completion",
3591                 .def    = "0",
3592                 .parent = "cgroup",
3593                 .category = FIO_OPT_C_GENERAL,
3594                 .group  = FIO_OPT_G_CGROUP,
3595         },
3596         {
3597                 .name   = "cgroup_weight",
3598                 .lname  = "Cgroup weight",
3599                 .type   = FIO_OPT_INT,
3600                 .off1   = td_var_offset(cgroup_weight),
3601                 .help   = "Use given weight for cgroup",
3602                 .minval = 100,
3603                 .maxval = 1000,
3604                 .parent = "cgroup",
3605                 .category = FIO_OPT_C_GENERAL,
3606                 .group  = FIO_OPT_G_CGROUP,
3607         },
3608         {
3609                 .name   = "uid",
3610                 .lname  = "User ID",
3611                 .type   = FIO_OPT_INT,
3612                 .off1   = td_var_offset(uid),
3613                 .help   = "Run job with this user ID",
3614                 .category = FIO_OPT_C_GENERAL,
3615                 .group  = FIO_OPT_G_CRED,
3616         },
3617         {
3618                 .name   = "gid",
3619                 .lname  = "Group ID",
3620                 .type   = FIO_OPT_INT,
3621                 .off1   = td_var_offset(gid),
3622                 .help   = "Run job with this group ID",
3623                 .category = FIO_OPT_C_GENERAL,
3624                 .group  = FIO_OPT_G_CRED,
3625         },
3626         {
3627                 .name   = "kb_base",
3628                 .lname  = "KB Base",
3629                 .type   = FIO_OPT_INT,
3630                 .off1   = td_var_offset(kb_base),
3631                 .prio   = 1,
3632                 .def    = "1024",
3633                 .posval = {
3634                           { .ival = "1024",
3635                             .oval = 1024,
3636                             .help = "Use 1024 as the K base",
3637                           },
3638                           { .ival = "1000",
3639                             .oval = 1000,
3640                             .help = "Use 1000 as the K base",
3641                           },
3642                 },
3643                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3644                 .category = FIO_OPT_C_GENERAL,
3645                 .group  = FIO_OPT_G_INVALID,
3646         },
3647         {
3648                 .name   = "unit_base",
3649                 .lname  = "Base unit for reporting (Bits or Bytes)",
3650                 .type   = FIO_OPT_INT,
3651                 .off1   = td_var_offset(unit_base),
3652                 .prio   = 1,
3653                 .posval = {
3654                           { .ival = "0",
3655                             .oval = 0,
3656                             .help = "Auto-detect",
3657                           },
3658                           { .ival = "8",
3659                             .oval = 8,
3660                             .help = "Normal (byte based)",
3661                           },
3662                           { .ival = "1",
3663                             .oval = 1,
3664                             .help = "Bit based",
3665                           },
3666                 },
3667                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3668                 .category = FIO_OPT_C_GENERAL,
3669                 .group  = FIO_OPT_G_INVALID,
3670         },
3671         {
3672                 .name   = "hugepage-size",
3673                 .lname  = "Hugepage size",
3674                 .type   = FIO_OPT_INT,
3675                 .off1   = td_var_offset(hugepage_size),
3676                 .help   = "When using hugepages, specify size of each page",
3677                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3678                 .interval = 1024 * 1024,
3679                 .category = FIO_OPT_C_GENERAL,
3680                 .group  = FIO_OPT_G_INVALID,
3681         },
3682         {
3683                 .name   = "flow_id",
3684                 .lname  = "I/O flow ID",
3685                 .type   = FIO_OPT_INT,
3686                 .off1   = td_var_offset(flow_id),
3687                 .help   = "The flow index ID to use",
3688                 .def    = "0",
3689                 .category = FIO_OPT_C_IO,
3690                 .group  = FIO_OPT_G_IO_FLOW,
3691         },
3692         {
3693                 .name   = "flow",
3694                 .lname  = "I/O flow weight",
3695                 .type   = FIO_OPT_INT,
3696                 .off1   = td_var_offset(flow),
3697                 .help   = "Weight for flow control of this job",
3698                 .parent = "flow_id",
3699                 .hide   = 1,
3700                 .def    = "0",
3701                 .category = FIO_OPT_C_IO,
3702                 .group  = FIO_OPT_G_IO_FLOW,
3703         },
3704         {
3705                 .name   = "flow_watermark",
3706                 .lname  = "I/O flow watermark",
3707                 .type   = FIO_OPT_INT,
3708                 .off1   = td_var_offset(flow_watermark),
3709                 .help   = "High watermark for flow control. This option"
3710                         " should be set to the same value for all threads"
3711                         " with non-zero flow.",
3712                 .parent = "flow_id",
3713                 .hide   = 1,
3714                 .def    = "1024",
3715                 .category = FIO_OPT_C_IO,
3716                 .group  = FIO_OPT_G_IO_FLOW,
3717         },
3718         {
3719                 .name   = "flow_sleep",
3720                 .lname  = "I/O flow sleep",
3721                 .type   = FIO_OPT_INT,
3722                 .off1   = td_var_offset(flow_sleep),
3723                 .help   = "How many microseconds to sleep after being held"
3724                         " back by the flow control mechanism",
3725                 .parent = "flow_id",
3726                 .hide   = 1,
3727                 .def    = "0",
3728                 .category = FIO_OPT_C_IO,
3729                 .group  = FIO_OPT_G_IO_FLOW,
3730         },
3731         {
3732                 .name   = "skip_bad",
3733                 .lname  = "Skip operations against bad blocks",
3734                 .type   = FIO_OPT_BOOL,
3735                 .off1   = td_var_offset(skip_bad),
3736                 .help   = "Skip operations against known bad blocks.",
3737                 .hide   = 1,
3738                 .def    = "0",
3739                 .category = FIO_OPT_C_IO,
3740                 .group  = FIO_OPT_G_MTD,
3741         },
3742         {
3743                 .name = NULL,
3744         },
3745 };
3746
3747 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3748                         const char *name, int val)
3749 {
3750         lopt->name = (char *) name;
3751         lopt->val = val;
3752         if (o->type == FIO_OPT_STR_SET)
3753                 lopt->has_arg = optional_argument;
3754         else
3755                 lopt->has_arg = required_argument;
3756 }
3757
3758 static void options_to_lopts(struct fio_option *opts,
3759                               struct option *long_options,
3760                               int i, int option_type)
3761 {
3762         struct fio_option *o = &opts[0];
3763         while (o->name) {
3764                 add_to_lopt(&long_options[i], o, o->name, option_type);
3765                 if (o->alias) {
3766                         i++;
3767                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3768                 }
3769
3770                 i++;
3771                 o++;
3772                 assert(i < FIO_NR_OPTIONS);
3773         }
3774 }
3775
3776 void fio_options_set_ioengine_opts(struct option *long_options,
3777                                    struct thread_data *td)
3778 {
3779         unsigned int i;
3780
3781         i = 0;
3782         while (long_options[i].name) {
3783                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3784                         memset(&long_options[i], 0, sizeof(*long_options));
3785                         break;
3786                 }
3787                 i++;
3788         }
3789
3790         /*
3791          * Just clear out the prior ioengine options.
3792          */
3793         if (!td || !td->eo)
3794                 return;
3795
3796         options_to_lopts(td->io_ops->options, long_options, i,
3797                          FIO_GETOPT_IOENGINE);
3798 }
3799
3800 void fio_options_dup_and_init(struct option *long_options)
3801 {
3802         unsigned int i;
3803
3804         options_init(fio_options);
3805
3806         i = 0;
3807         while (long_options[i].name)
3808                 i++;
3809
3810         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3811 }
3812
3813 struct fio_keyword {
3814         const char *word;
3815         const char *desc;
3816         char *replace;
3817 };
3818
3819 static struct fio_keyword fio_keywords[] = {
3820         {
3821                 .word   = "$pagesize",
3822                 .desc   = "Page size in the system",
3823         },
3824         {
3825                 .word   = "$mb_memory",
3826                 .desc   = "Megabytes of memory online",
3827         },
3828         {
3829                 .word   = "$ncpus",
3830                 .desc   = "Number of CPUs online in the system",
3831         },
3832         {
3833                 .word   = NULL,
3834         },
3835 };
3836
3837 void fio_keywords_exit(void)
3838 {
3839         struct fio_keyword *kw;
3840
3841         kw = &fio_keywords[0];
3842         while (kw->word) {
3843                 free(kw->replace);
3844                 kw->replace = NULL;
3845                 kw++;
3846         }
3847 }
3848
3849 void fio_keywords_init(void)
3850 {
3851         unsigned long long mb_memory;
3852         char buf[128];
3853         long l;
3854
3855         sprintf(buf, "%lu", (unsigned long) page_size);
3856         fio_keywords[0].replace = strdup(buf);
3857
3858         mb_memory = os_phys_mem() / (1024 * 1024);
3859         sprintf(buf, "%llu", mb_memory);
3860         fio_keywords[1].replace = strdup(buf);
3861
3862         l = cpus_online();
3863         sprintf(buf, "%lu", l);
3864         fio_keywords[2].replace = strdup(buf);
3865 }
3866
3867 #define BC_APP          "bc"
3868
3869 static char *bc_calc(char *str)
3870 {
3871         char buf[128], *tmp;
3872         FILE *f;
3873         int ret;
3874
3875         /*
3876          * No math, just return string
3877          */
3878         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3879              !strchr(str, '/')) || strchr(str, '\''))
3880                 return str;
3881
3882         /*
3883          * Split option from value, we only need to calculate the value
3884          */
3885         tmp = strchr(str, '=');
3886         if (!tmp)
3887                 return str;
3888
3889         tmp++;
3890
3891         /*
3892          * Prevent buffer overflows; such a case isn't reasonable anyway
3893          */
3894         if (strlen(str) >= 128 || strlen(tmp) > 100)
3895                 return str;
3896
3897         sprintf(buf, "which %s > /dev/null", BC_APP);
3898         if (system(buf)) {
3899                 log_err("fio: bc is needed for performing math\n");
3900                 return NULL;
3901         }
3902
3903         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
3904         f = popen(buf, "r");
3905         if (!f)
3906                 return NULL;
3907
3908         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
3909         if (ret <= 0) {
3910                 pclose(f);
3911                 return NULL;
3912         }
3913
3914         pclose(f);
3915         buf[(tmp - str) + ret - 1] = '\0';
3916         memcpy(buf, str, tmp - str);
3917         free(str);
3918         return strdup(buf);
3919 }
3920
3921 /*
3922  * Return a copy of the input string with substrings of the form ${VARNAME}
3923  * substituted with the value of the environment variable VARNAME.  The
3924  * substitution always occurs, even if VARNAME is empty or the corresponding
3925  * environment variable undefined.
3926  */
3927 static char *option_dup_subs(const char *opt)
3928 {
3929         char out[OPT_LEN_MAX+1];
3930         char in[OPT_LEN_MAX+1];
3931         char *outptr = out;
3932         char *inptr = in;
3933         char *ch1, *ch2, *env;
3934         ssize_t nchr = OPT_LEN_MAX;
3935         size_t envlen;
3936
3937         if (strlen(opt) + 1 > OPT_LEN_MAX) {
3938                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
3939                 return NULL;
3940         }
3941
3942         in[OPT_LEN_MAX] = '\0';
3943         strncpy(in, opt, OPT_LEN_MAX);
3944
3945         while (*inptr && nchr > 0) {
3946                 if (inptr[0] == '$' && inptr[1] == '{') {
3947                         ch2 = strchr(inptr, '}');
3948                         if (ch2 && inptr+1 < ch2) {
3949                                 ch1 = inptr+2;
3950                                 inptr = ch2+1;
3951                                 *ch2 = '\0';
3952
3953                                 env = getenv(ch1);
3954                                 if (env) {
3955                                         envlen = strlen(env);
3956                                         if (envlen <= nchr) {
3957                                                 memcpy(outptr, env, envlen);
3958                                                 outptr += envlen;
3959                                                 nchr -= envlen;
3960                                         }
3961                                 }
3962
3963                                 continue;
3964                         }
3965                 }
3966
3967                 *outptr++ = *inptr++;
3968                 --nchr;
3969         }
3970
3971         *outptr = '\0';
3972         return strdup(out);
3973 }
3974
3975 /*
3976  * Look for reserved variable names and replace them with real values
3977  */
3978 static char *fio_keyword_replace(char *opt)
3979 {
3980         char *s;
3981         int i;
3982         int docalc = 0;
3983
3984         for (i = 0; fio_keywords[i].word != NULL; i++) {
3985                 struct fio_keyword *kw = &fio_keywords[i];
3986
3987                 while ((s = strstr(opt, kw->word)) != NULL) {
3988                         char *new = malloc(strlen(opt) + 1);
3989                         char *o_org = opt;
3990                         int olen = s - opt;
3991                         int len;
3992
3993                         /*
3994                          * Copy part of the string before the keyword and
3995                          * sprintf() the replacement after it.
3996                          */
3997                         memcpy(new, opt, olen);
3998                         len = sprintf(new + olen, "%s", kw->replace);
3999
4000                         /*
4001                          * If there's more in the original string, copy that
4002                          * in too
4003                          */
4004                         opt += strlen(kw->word) + olen;
4005                         if (strlen(opt))
4006                                 memcpy(new + olen + len, opt, opt - o_org - 1);
4007
4008                         /*
4009                          * replace opt and free the old opt
4010                          */
4011                         opt = new;
4012                         free(o_org);
4013
4014                         docalc = 1;
4015                 }
4016         }
4017
4018         /*
4019          * Check for potential math and invoke bc, if possible
4020          */
4021         if (docalc)
4022                 opt = bc_calc(opt);
4023
4024         return opt;
4025 }
4026
4027 static char **dup_and_sub_options(char **opts, int num_opts)
4028 {
4029         int i;
4030         char **opts_copy = malloc(num_opts * sizeof(*opts));
4031         for (i = 0; i < num_opts; i++) {
4032                 opts_copy[i] = option_dup_subs(opts[i]);
4033                 if (!opts_copy[i])
4034                         continue;
4035                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
4036         }
4037         return opts_copy;
4038 }
4039
4040 static void show_closest_option(const char *opt)
4041 {
4042         int best_option, best_distance;
4043         int i, distance;
4044         char *name;
4045
4046         if (!strlen(opt))
4047                 return;
4048
4049         name = strdup(opt);
4050         i = 0;
4051         while (name[i] != '\0' && name[i] != '=')
4052                 i++;
4053         name[i] = '\0';
4054
4055         best_option = -1;
4056         best_distance = INT_MAX;
4057         i = 0;
4058         while (fio_options[i].name) {
4059                 distance = string_distance(name, fio_options[i].name);
4060                 if (distance < best_distance) {
4061                         best_distance = distance;
4062                         best_option = i;
4063                 }
4064                 i++;
4065         }
4066
4067         if (best_option != -1 && string_distance_ok(name, best_distance))
4068                 log_err("Did you mean %s?\n", fio_options[best_option].name);
4069
4070         free(name);
4071 }
4072
4073 int fio_options_parse(struct thread_data *td, char **opts, int num_opts,
4074                         int dump_cmdline)
4075 {
4076         int i, ret, unknown;
4077         char **opts_copy;
4078
4079         sort_options(opts, fio_options, num_opts);
4080         opts_copy = dup_and_sub_options(opts, num_opts);
4081
4082         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
4083                 struct fio_option *o;
4084                 int newret = parse_option(opts_copy[i], opts[i], fio_options,
4085                                                 &o, td, dump_cmdline);
4086
4087                 if (!newret && o)
4088                         fio_option_mark_set(&td->o, o);
4089
4090                 if (opts_copy[i]) {
4091                         if (newret && !o) {
4092                                 unknown++;
4093                                 continue;
4094                         }
4095                         free(opts_copy[i]);
4096                         opts_copy[i] = NULL;
4097                 }
4098
4099                 ret |= newret;
4100         }
4101
4102         if (unknown) {
4103                 ret |= ioengine_load(td);
4104                 if (td->eo) {
4105                         sort_options(opts_copy, td->io_ops->options, num_opts);
4106                         opts = opts_copy;
4107                 }
4108                 for (i = 0; i < num_opts; i++) {
4109                         struct fio_option *o = NULL;
4110                         int newret = 1;
4111
4112                         if (!opts_copy[i])
4113                                 continue;
4114
4115                         if (td->eo)
4116                                 newret = parse_option(opts_copy[i], opts[i],
4117                                                       td->io_ops->options, &o,
4118                                                       td->eo, dump_cmdline);
4119
4120                         ret |= newret;
4121                         if (!o) {
4122                                 log_err("Bad option <%s>\n", opts[i]);
4123                                 show_closest_option(opts[i]);
4124                         }
4125                         free(opts_copy[i]);
4126                         opts_copy[i] = NULL;
4127                 }
4128         }
4129
4130         free(opts_copy);
4131         return ret;
4132 }
4133
4134 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
4135 {
4136         int ret;
4137
4138         ret = parse_cmd_option(opt, val, fio_options, td);
4139         if (!ret) {
4140                 struct fio_option *o;
4141
4142                 o = find_option(fio_options, opt);
4143                 if (o)
4144                         fio_option_mark_set(&td->o, o);
4145         }
4146
4147         return ret;
4148 }
4149
4150 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
4151                                 char *val)
4152 {
4153         return parse_cmd_option(opt, val, td->io_ops->options, td->eo);
4154 }
4155
4156 void fio_fill_default_options(struct thread_data *td)
4157 {
4158         td->o.magic = OPT_MAGIC;
4159         fill_default_options(td, fio_options);
4160 }
4161
4162 int fio_show_option_help(const char *opt)
4163 {
4164         return show_cmd_help(fio_options, opt);
4165 }
4166
4167 void options_mem_dupe(void *data, struct fio_option *options)
4168 {
4169         struct fio_option *o;
4170         char **ptr;
4171
4172         for (o = &options[0]; o->name; o++) {
4173                 if (o->type != FIO_OPT_STR_STORE)
4174                         continue;
4175
4176                 ptr = td_var(data, o, o->off1);
4177                 if (*ptr)
4178                         *ptr = strdup(*ptr);
4179         }
4180 }
4181
4182 /*
4183  * dupe FIO_OPT_STR_STORE options
4184  */
4185 void fio_options_mem_dupe(struct thread_data *td)
4186 {
4187         options_mem_dupe(&td->o, fio_options);
4188
4189         if (td->eo && td->io_ops) {
4190                 void *oldeo = td->eo;
4191
4192                 td->eo = malloc(td->io_ops->option_struct_size);
4193                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
4194                 options_mem_dupe(td->eo, td->io_ops->options);
4195         }
4196 }
4197
4198 unsigned int fio_get_kb_base(void *data)
4199 {
4200         struct thread_options *o = data;
4201         unsigned int kb_base = 0;
4202
4203         /*
4204          * This is a hack... For private options, *data is not holding
4205          * a pointer to the thread_options, but to private data. This means
4206          * we can't safely dereference it, but magic is first so mem wise
4207          * it is valid. But this also means that if the job first sets
4208          * kb_base and expects that to be honored by private options,
4209          * it will be disappointed. We will return the global default
4210          * for this.
4211          */
4212         if (o && o->magic == OPT_MAGIC)
4213                 kb_base = o->kb_base;
4214         if (!kb_base)
4215                 kb_base = 1024;
4216
4217         return kb_base;
4218 }
4219
4220 int add_option(struct fio_option *o)
4221 {
4222         struct fio_option *__o;
4223         int opt_index = 0;
4224
4225         __o = fio_options;
4226         while (__o->name) {
4227                 opt_index++;
4228                 __o++;
4229         }
4230
4231         if (opt_index + 1 == FIO_MAX_OPTS) {
4232                 log_err("fio: FIO_MAX_OPTS is too small\n");
4233                 return 1;
4234         }
4235
4236         memcpy(&fio_options[opt_index], o, sizeof(*o));
4237         fio_options[opt_index + 1].name = NULL;
4238         return 0;
4239 }
4240
4241 void invalidate_profile_options(const char *prof_name)
4242 {
4243         struct fio_option *o;
4244
4245         o = fio_options;
4246         while (o->name) {
4247                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
4248                         o->type = FIO_OPT_INVALID;
4249                         o->prof_name = NULL;
4250                 }
4251                 o++;
4252         }
4253 }
4254
4255 void add_opt_posval(const char *optname, const char *ival, const char *help)
4256 {
4257         struct fio_option *o;
4258         unsigned int i;
4259
4260         o = find_option(fio_options, optname);
4261         if (!o)
4262                 return;
4263
4264         for (i = 0; i < PARSE_MAX_VP; i++) {
4265                 if (o->posval[i].ival)
4266                         continue;
4267
4268                 o->posval[i].ival = ival;
4269                 o->posval[i].help = help;
4270                 break;
4271         }
4272 }
4273
4274 void del_opt_posval(const char *optname, const char *ival)
4275 {
4276         struct fio_option *o;
4277         unsigned int i;
4278
4279         o = find_option(fio_options, optname);
4280         if (!o)
4281                 return;
4282
4283         for (i = 0; i < PARSE_MAX_VP; i++) {
4284                 if (!o->posval[i].ival)
4285                         continue;
4286                 if (strcmp(o->posval[i].ival, ival))
4287                         continue;
4288
4289                 o->posval[i].ival = NULL;
4290                 o->posval[i].help = NULL;
4291         }
4292 }
4293
4294 void fio_options_free(struct thread_data *td)
4295 {
4296         options_free(fio_options, td);
4297         if (td->eo && td->io_ops && td->io_ops->options) {
4298                 options_free(td->io_ops->options, td->eo);
4299                 free(td->eo);
4300                 td->eo = NULL;
4301         }
4302 }
4303
4304 struct fio_option *fio_option_find(const char *name)
4305 {
4306         return find_option(fio_options, name);
4307 }
4308
4309 static struct fio_option *find_next_opt(struct thread_options *o,
4310                                         struct fio_option *from,
4311                                         unsigned int off1)
4312 {
4313         struct fio_option *opt;
4314
4315         if (!from)
4316                 from = &fio_options[0];
4317         else
4318                 from++;
4319
4320         opt = NULL;
4321         do {
4322                 if (off1 == from->off1) {
4323                         opt = from;
4324                         break;
4325                 }
4326                 from++;
4327         } while (from->name);
4328
4329         return opt;
4330 }
4331
4332 static int opt_is_set(struct thread_options *o, struct fio_option *opt)
4333 {
4334         unsigned int opt_off, index, offset;
4335
4336         opt_off = opt - &fio_options[0];
4337         index = opt_off / (8 * sizeof(uint64_t));
4338         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4339         return (o->set_options[index] & ((uint64_t)1 << offset)) != 0;
4340 }
4341
4342 int __fio_option_is_set(struct thread_options *o, unsigned int off1)
4343 {
4344         struct fio_option *opt, *next;
4345
4346         next = NULL;
4347         while ((opt = find_next_opt(o, next, off1)) != NULL) {
4348                 if (opt_is_set(o, opt))
4349                         return 1;
4350
4351                 next = opt;
4352         }
4353
4354         return 0;
4355 }
4356
4357 void fio_option_mark_set(struct thread_options *o, struct fio_option *opt)
4358 {
4359         unsigned int opt_off, index, offset;
4360
4361         opt_off = opt - &fio_options[0];
4362         index = opt_off / (8 * sizeof(uint64_t));
4363         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4364         o->set_options[index] |= (uint64_t)1 << offset;
4365 }