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 "options.h"
  18
  19 #include "crc/crc32c.h"
  20
  21 char client_sockaddr_str[INET6_ADDRSTRLEN] = { 0 };
  22
  23 /*
  24  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  25  */
  26 static char *get_opt_postfix(const char *str)
  27 {
  28         char *p = strstr(str, ":");
  29
  30         if (!p)
  31                 return NULL;
  32
  33         p++;
  34         strip_blank_front(&p);
  35         strip_blank_end(p);
  36         return strdup(p);
  37 }
  38
  39 static int converthexchartoint(char a)
  40 {
  41         int base;
  42
  43         switch (a) {
  44         case '0'...'9':
  45                 base = '0';
  46                 break;
  47         case 'A'...'F':
  48                 base = 'A' - 10;
  49                 break;
  50         case 'a'...'f':
  51                 base = 'a' - 10;
  52                 break;
  53         default:
  54                 base = 0;
  55         }
  56         return a - base;
  57 }
  58
  59 static int bs_cmp(const void *p1, const void *p2)
  60 {
  61         const struct bssplit *bsp1 = p1;
  62         const struct bssplit *bsp2 = p2;
  63
  64         return bsp1->perc < bsp2->perc;
  65 }
  66
  67 static int bssplit_ddir(struct thread_options *o, int ddir, char *str)
  68 {
  69         struct bssplit *bssplit;
  70         unsigned int i, perc, perc_missing;
  71         unsigned int max_bs, min_bs;
  72         long long val;
  73         char *fname;
  74
  75         o->bssplit_nr[ddir] = 4;
  76         bssplit = malloc(4 * sizeof(struct bssplit));
  77
  78         i = 0;
  79         max_bs = 0;
  80         min_bs = -1;
  81         while ((fname = strsep(&str, ":")) != NULL) {
  82                 char *perc_str;
  83
  84                 if (!strlen(fname))
  85                         break;
  86
  87                 /*
  88                  * grow struct buffer, if needed
  89                  */
  90                 if (i == o->bssplit_nr[ddir]) {
  91                         o->bssplit_nr[ddir] <<= 1;
  92                         bssplit = realloc(bssplit, o->bssplit_nr[ddir]
  93                                                   * sizeof(struct bssplit));
  94                 }
  95
  96                 perc_str = strstr(fname, "/");
  97                 if (perc_str) {
  98                         *perc_str = '\0';
  99                         perc_str++;
 100                         perc = atoi(perc_str);
 101                         if (perc > 100)
 102                                 perc = 100;
 103                         else if (!perc)
 104                                 perc = -1U;
 105                 } else
 106                         perc = -1U;
 107
 108                 if (str_to_decimal(fname, &val, 1, o, 0, 0)) {
 109                         log_err("fio: bssplit conversion failed\n");
 110                         free(bssplit);
 111                         return 1;
 112                 }
 113
 114                 if (val > max_bs)
 115                         max_bs = val;
 116                 if (val < min_bs)
 117                         min_bs = val;
 118
 119                 bssplit[i].bs = val;
 120                 bssplit[i].perc = perc;
 121                 i++;
 122         }
 123
 124         o->bssplit_nr[ddir] = i;
 125
 126         /*
 127          * Now check if the percentages add up, and how much is missing
 128          */
 129         perc = perc_missing = 0;
 130         for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 131                 struct bssplit *bsp = &bssplit[i];
 132
 133                 if (bsp->perc == -1U)
 134                         perc_missing++;
 135                 else
 136                         perc += bsp->perc;
 137         }
 138
 139         if (perc > 100 && perc_missing > 1) {
 140                 log_err("fio: bssplit percentages add to more than 100%%\n");
 141                 free(bssplit);
 142                 return 1;
 143         }
 144
 145         /*
 146          * If values didn't have a percentage set, divide the remains between
 147          * them.
 148          */
 149         if (perc_missing) {
 150                 if (perc_missing == 1 && o->bssplit_nr[ddir] == 1)
 151                         perc = 100;
 152                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 153                         struct bssplit *bsp = &bssplit[i];
 154
 155                         if (bsp->perc == -1U)
 156                                 bsp->perc = (100 - perc) / perc_missing;
 157                 }
 158         }
 159
 160         o->min_bs[ddir] = min_bs;
 161         o->max_bs[ddir] = max_bs;
 162
 163         /*
 164          * now sort based on percentages, for ease of lookup
 165          */
 166         qsort(bssplit, o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 167         o->bssplit[ddir] = bssplit;
 168         return 0;
 169 }
 170
 171 static int str_bssplit_cb(void *data, const char *input)
 172 {
 173         struct thread_data *td = data;
 174         char *str, *p, *odir, *ddir;
 175         int ret = 0;
 176
 177         if (parse_dryrun())
 178                 return 0;
 179
 180         p = str = strdup(input);
 181
 182         strip_blank_front(&str);
 183         strip_blank_end(str);
 184
 185         odir = strchr(str, ',');
 186         if (odir) {
 187                 ddir = strchr(odir + 1, ',');
 188                 if (ddir) {
 189                         ret = bssplit_ddir(&td->o, DDIR_TRIM, ddir + 1);
 190                         if (!ret)
 191                                 *ddir = '\0';
 192                 } else {
 193                         char *op;
 194
 195                         op = strdup(odir + 1);
 196                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 197
 198                         free(op);
 199                 }
 200                 if (!ret)
 201                         ret = bssplit_ddir(&td->o, DDIR_WRITE, odir + 1);
 202                 if (!ret) {
 203                         *odir = '\0';
 204                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
 205                 }
 206         } else {
 207                 char *op;
 208
 209                 op = strdup(str);
 210                 ret = bssplit_ddir(&td->o, DDIR_WRITE, op);
 211                 free(op);
 212
 213                 if (!ret) {
 214                         op = strdup(str);
 215                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
 216                         free(op);
 217                 }
 218                 ret = bssplit_ddir(&td->o, DDIR_READ, str);
 219         }
 220
 221         free(p);
 222         return ret;
 223 }
 224
 225 static int str2error(char *str)
 226 {
 227         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 228                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 229                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 230                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 231                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 232                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 233                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 234                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
 235         int i = 0, num = sizeof(err) / sizeof(void *);
 236
 237         while (i < num) {
 238                 if (!strcmp(err[i], str))
 239                         return i + 1;
 240                 i++;
 241         }
 242         return 0;
 243 }
 244
 245 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 246 {
 247         unsigned int i;
 248         int *error;
 249         char *fname;
 250
 251         if (etype >= ERROR_TYPE_CNT) {
 252                 log_err("Illegal error type\n");
 253                 return 1;
 254         }
 255
 256         td->o.ignore_error_nr[etype] = 4;
 257         error = malloc(4 * sizeof(struct bssplit));
 258
 259         i = 0;
 260         while ((fname = strsep(&str, ":")) != NULL) {
 261
 262                 if (!strlen(fname))
 263                         break;
 264
 265                 /*
 266                  * grow struct buffer, if needed
 267                  */
 268                 if (i == td->o.ignore_error_nr[etype]) {
 269                         td->o.ignore_error_nr[etype] <<= 1;
 270                         error = realloc(error, td->o.ignore_error_nr[etype]
 271                                                   * sizeof(int));
 272                 }
 273                 if (fname[0] == 'E') {
 274                         error[i] = str2error(fname);
 275                 } else {
 276                         error[i] = atoi(fname);
 277                         if (error[i] < 0)
 278                                 error[i] = -error[i];
 279                 }
 280                 if (!error[i]) {
 281                         log_err("Unknown error %s, please use number value \n",
 282                                   fname);
 283                         free(error);
 284                         return 1;
 285                 }
 286                 i++;
 287         }
 288         if (i) {
 289                 td->o.continue_on_error |= 1 << etype;
 290                 td->o.ignore_error_nr[etype] = i;
 291                 td->o.ignore_error[etype] = error;
 292         } else
 293                 free(error);
 294
 295         return 0;
 296
 297 }
 298
 299 static int str_ignore_error_cb(void *data, const char *input)
 300 {
 301         struct thread_data *td = data;
 302         char *str, *p, *n;
 303         int type = 0, ret = 1;
 304
 305         if (parse_dryrun())
 306                 return 0;
 307
 308         p = str = strdup(input);
 309
 310         strip_blank_front(&str);
 311         strip_blank_end(str);
 312
 313         while (p) {
 314                 n = strchr(p, ',');
 315                 if (n)
 316                         *n++ = '\0';
 317                 ret = ignore_error_type(td, type, p);
 318                 if (ret)
 319                         break;
 320                 p = n;
 321                 type++;
 322         }
 323         free(str);
 324         return ret;
 325 }
 326
 327 static int str_rw_cb(void *data, const char *str)
 328 {
 329         struct thread_data *td = data;
 330         struct thread_options *o = &td->o;
 331         char *nr;
 332
 333         if (parse_dryrun())
 334                 return 0;
 335
 336         o->ddir_seq_nr = 1;
 337         o->ddir_seq_add = 0;
 338
 339         nr = get_opt_postfix(str);
 340         if (!nr)
 341                 return 0;
 342
 343         if (td_random(td))
 344                 o->ddir_seq_nr = atoi(nr);
 345         else {
 346                 long long val;
 347
 348                 if (str_to_decimal(nr, &val, 1, o, 0, 0)) {
 349                         log_err("fio: rw postfix parsing failed\n");
 350                         free(nr);
 351                         return 1;
 352                 }
 353
 354                 o->ddir_seq_add = val;
 355         }
 356
 357         free(nr);
 358         return 0;
 359 }
 360
 361 static int str_mem_cb(void *data, const char *mem)
 362 {
 363         struct thread_data *td = data;
 364
 365         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP)
 366                 td->o.mmapfile = get_opt_postfix(mem);
 367
 368         return 0;
 369 }
 370
 371 static int fio_clock_source_cb(void *data, const char *str)
 372 {
 373         struct thread_data *td = data;
 374
 375         fio_clock_source = td->o.clocksource;
 376         fio_clock_source_set = 1;
 377         fio_clock_init();
 378         return 0;
 379 }
 380
 381 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 382 {
 383         struct thread_data *td = data;
 384
 385         td->o.rwmix[DDIR_READ] = *val;
 386         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 387         return 0;
 388 }
 389
 390 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 391 {
 392         struct thread_data *td = data;
 393
 394         td->o.rwmix[DDIR_WRITE] = *val;
 395         td->o.rwmix[DDIR_READ] = 100 - *val;
 396         return 0;
 397 }
 398
 399 static int str_exitall_cb(void)
 400 {
 401         exitall_on_terminate = 1;
 402         return 0;
 403 }
 404
 405 #ifdef FIO_HAVE_CPU_AFFINITY
 406 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
 407 {
 408         unsigned int i, index, cpus_in_mask;
 409         const long max_cpu = cpus_online();
 410
 411         cpus_in_mask = fio_cpu_count(mask);
 412         cpu_index = cpu_index % cpus_in_mask;
 413
 414         index = 0;
 415         for (i = 0; i < max_cpu; i++) {
 416                 if (!fio_cpu_isset(mask, i))
 417                         continue;
 418
 419                 if (cpu_index != index)
 420                         fio_cpu_clear(mask, i);
 421
 422                 index++;
 423         }
 424
 425         return fio_cpu_count(mask);
 426 }
 427
 428 static int str_cpumask_cb(void *data, unsigned long long *val)
 429 {
 430         struct thread_data *td = data;
 431         unsigned int i;
 432         long max_cpu;
 433         int ret;
 434
 435         if (parse_dryrun())
 436                 return 0;
 437
 438         ret = fio_cpuset_init(&td->o.cpumask);
 439         if (ret < 0) {
 440                 log_err("fio: cpuset_init failed\n");
 441                 td_verror(td, ret, "fio_cpuset_init");
 442                 return 1;
 443         }
 444
 445         max_cpu = cpus_online();
 446
 447         for (i = 0; i < sizeof(int) * 8; i++) {
 448                 if ((1 << i) & *val) {
 449                         if (i >= max_cpu) {
 450                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 451                                                                 max_cpu - 1);
 452                                 return 1;
 453                         }
 454                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 455                         fio_cpu_set(&td->o.cpumask, i);
 456                 }
 457         }
 458
 459         return 0;
 460 }
 461
 462 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 463                             const char *input)
 464 {
 465         char *cpu, *str, *p;
 466         long max_cpu;
 467         int ret = 0;
 468
 469         ret = fio_cpuset_init(mask);
 470         if (ret < 0) {
 471                 log_err("fio: cpuset_init failed\n");
 472                 td_verror(td, ret, "fio_cpuset_init");
 473                 return 1;
 474         }
 475
 476         p = str = strdup(input);
 477
 478         strip_blank_front(&str);
 479         strip_blank_end(str);
 480
 481         max_cpu = cpus_online();
 482
 483         while ((cpu = strsep(&str, ",")) != NULL) {
 484                 char *str2, *cpu2;
 485                 int icpu, icpu2;
 486
 487                 if (!strlen(cpu))
 488                         break;
 489
 490                 str2 = cpu;
 491                 icpu2 = -1;
 492                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 493                         if (!strlen(cpu2))
 494                                 break;
 495
 496                         icpu2 = atoi(cpu2);
 497                 }
 498
 499                 icpu = atoi(cpu);
 500                 if (icpu2 == -1)
 501                         icpu2 = icpu;
 502                 while (icpu <= icpu2) {
 503                         if (icpu >= FIO_MAX_CPUS) {
 504                                 log_err("fio: your OS only supports up to"
 505                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 506                                 ret = 1;
 507                                 break;
 508                         }
 509                         if (icpu >= max_cpu) {
 510                                 log_err("fio: CPU %d too large (max=%ld)\n",
 511                                                         icpu, max_cpu - 1);
 512                                 ret = 1;
 513                                 break;
 514                         }
 515
 516                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 517                         fio_cpu_set(mask, icpu);
 518                         icpu++;
 519                 }
 520                 if (ret)
 521                         break;
 522         }
 523
 524         free(p);
 525         return ret;
 526 }
 527
 528 static int str_cpus_allowed_cb(void *data, const char *input)
 529 {
 530         struct thread_data *td = data;
 531
 532         if (parse_dryrun())
 533                 return 0;
 534
 535         return set_cpus_allowed(td, &td->o.cpumask, input);
 536 }
 537
 538 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 539 {
 540         struct thread_data *td = data;
 541
 542         return set_cpus_allowed(td, &td->o.verify_cpumask, input);
 543 }
 544 #endif
 545
 546 #ifdef CONFIG_LIBNUMA
 547 static int str_numa_cpunodes_cb(void *data, char *input)
 548 {
 549         struct thread_data *td = data;
 550         struct bitmask *verify_bitmask;
 551
 552         if (parse_dryrun())
 553                 return 0;
 554
 555         /* numa_parse_nodestring() parses a character string list
 556          * of nodes into a bit mask. The bit mask is allocated by
 557          * numa_allocate_nodemask(), so it should be freed by
 558          * numa_free_nodemask().
 559          */
 560         verify_bitmask = numa_parse_nodestring(input);
 561         if (verify_bitmask == NULL) {
 562                 log_err("fio: numa_parse_nodestring failed\n");
 563                 td_verror(td, 1, "str_numa_cpunodes_cb");
 564                 return 1;
 565         }
 566         numa_free_nodemask(verify_bitmask);
 567
 568         td->o.numa_cpunodes = strdup(input);
 569         return 0;
 570 }
 571
 572 static int str_numa_mpol_cb(void *data, char *input)
 573 {
 574         struct thread_data *td = data;
 575         const char * const policy_types[] =
 576                 { "default", "prefer", "bind", "interleave", "local", NULL };
 577         int i;
 578         char *nodelist;
 579         struct bitmask *verify_bitmask;
 580
 581         if (parse_dryrun())
 582                 return 0;
 583
 584         nodelist = strchr(input, ':');
 585         if (nodelist) {
 586                 /* NUL-terminate mode */
 587                 *nodelist++ = '\0';
 588         }
 589
 590         for (i = 0; i <= MPOL_LOCAL; i++) {
 591                 if (!strcmp(input, policy_types[i])) {
 592                         td->o.numa_mem_mode = i;
 593                         break;
 594                 }
 595         }
 596         if (i > MPOL_LOCAL) {
 597                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 598                 goto out;
 599         }
 600
 601         switch (td->o.numa_mem_mode) {
 602         case MPOL_PREFERRED:
 603                 /*
 604                  * Insist on a nodelist of one node only
 605                  */
 606                 if (nodelist) {
 607                         char *rest = nodelist;
 608                         while (isdigit(*rest))
 609                                 rest++;
 610                         if (*rest) {
 611                                 log_err("fio: one node only for \'prefer\'\n");
 612                                 goto out;
 613                         }
 614                 } else {
 615                         log_err("fio: one node is needed for \'prefer\'\n");
 616                         goto out;
 617                 }
 618                 break;
 619         case MPOL_INTERLEAVE:
 620                 /*
 621                  * Default to online nodes with memory if no nodelist
 622                  */
 623                 if (!nodelist)
 624                         nodelist = strdup("all");
 625                 break;
 626         case MPOL_LOCAL:
 627         case MPOL_DEFAULT:
 628                 /*
 629                  * Don't allow a nodelist
 630                  */
 631                 if (nodelist) {
 632                         log_err("fio: NO nodelist for \'local\'\n");
 633                         goto out;
 634                 }
 635                 break;
 636         case MPOL_BIND:
 637                 /*
 638                  * Insist on a nodelist
 639                  */
 640                 if (!nodelist) {
 641                         log_err("fio: a nodelist is needed for \'bind\'\n");
 642                         goto out;
 643                 }
 644                 break;
 645         }
 646
 647
 648         /* numa_parse_nodestring() parses a character string list
 649          * of nodes into a bit mask. The bit mask is allocated by
 650          * numa_allocate_nodemask(), so it should be freed by
 651          * numa_free_nodemask().
 652          */
 653         switch (td->o.numa_mem_mode) {
 654         case MPOL_PREFERRED:
 655                 td->o.numa_mem_prefer_node = atoi(nodelist);
 656                 break;
 657         case MPOL_INTERLEAVE:
 658         case MPOL_BIND:
 659                 verify_bitmask = numa_parse_nodestring(nodelist);
 660                 if (verify_bitmask == NULL) {
 661                         log_err("fio: numa_parse_nodestring failed\n");
 662                         td_verror(td, 1, "str_numa_memnodes_cb");
 663                         return 1;
 664                 }
 665                 td->o.numa_memnodes = strdup(nodelist);
 666                 numa_free_nodemask(verify_bitmask);
 667
 668                 break;
 669         case MPOL_LOCAL:
 670         case MPOL_DEFAULT:
 671         default:
 672                 break;
 673         }
 674
 675         return 0;
 676 out:
 677         return 1;
 678 }
 679 #endif
 680
 681 static int str_fst_cb(void *data, const char *str)
 682 {
 683         struct thread_data *td = data;
 684         char *nr = get_opt_postfix(str);
 685
 686         td->file_service_nr = 1;
 687         if (nr) {
 688                 td->file_service_nr = atoi(nr);
 689                 free(nr);
 690         }
 691
 692         return 0;
 693 }
 694
 695 #ifdef CONFIG_SYNC_FILE_RANGE
 696 static int str_sfr_cb(void *data, const char *str)
 697 {
 698         struct thread_data *td = data;
 699         char *nr = get_opt_postfix(str);
 700
 701         td->sync_file_range_nr = 1;
 702         if (nr) {
 703                 td->sync_file_range_nr = atoi(nr);
 704                 free(nr);
 705         }
 706
 707         return 0;
 708 }
 709 #endif
 710
 711 static int str_random_distribution_cb(void *data, const char *str)
 712 {
 713         struct thread_data *td = data;
 714         double val;
 715         char *nr;
 716
 717         if (parse_dryrun())
 718                 return 0;
 719
 720         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 721                 val = FIO_DEF_ZIPF;
 722         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 723                 val = FIO_DEF_PARETO;
 724         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
 725                 val = 0.0;
 726         else
 727                 return 0;
 728
 729         nr = get_opt_postfix(str);
 730         if (nr && !str_to_float(nr, &val, 0)) {
 731                 log_err("fio: random postfix parsing failed\n");
 732                 free(nr);
 733                 return 1;
 734         }
 735
 736         free(nr);
 737
 738         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 739                 if (val == 1.00) {
 740                         log_err("fio: zipf theta must different than 1.0\n");
 741                         return 1;
 742                 }
 743                 td->o.zipf_theta.u.f = val;
 744         } else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) {
 745                 if (val <= 0.00 || val >= 1.00) {
 746                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 747                         return 1;
 748                 }
 749                 td->o.pareto_h.u.f = val;
 750         } else {
 751                 if (val <= 0.00 || val >= 100.0) {
 752                         log_err("fio: normal deviation out of range (0 < input < 100.0)\n");
 753                         return 1;
 754                 }
 755                 td->o.gauss_dev.u.f = val;
 756         }
 757
 758         return 0;
 759 }
 760
 761 /*
 762  * Return next name in the string. Files are separated with ':'. If the ':'
 763  * is escaped with a '\', then that ':' is part of the filename and does not
 764  * indicate a new file.
 765  */
 766 static char *get_next_name(char **ptr)
 767 {
 768         char *str = *ptr;
 769         char *p, *start;
 770
 771         if (!str || !strlen(str))
 772                 return NULL;
 773
 774         start = str;
 775         do {
 776                 /*
 777                  * No colon, we are done
 778                  */
 779                 p = strchr(str, ':');
 780                 if (!p) {
 781                         *ptr = NULL;
 782                         break;
 783                 }
 784
 785                 /*
 786                  * We got a colon, but it's the first character. Skip and
 787                  * continue
 788                  */
 789                 if (p == start) {
 790                         str = ++start;
 791                         continue;
 792                 }
 793
 794                 if (*(p - 1) != '\\') {
 795                         *p = '\0';
 796                         *ptr = p + 1;
 797                         break;
 798                 }
 799
 800                 memmove(p - 1, p, strlen(p) + 1);
 801                 str = p;
 802         } while (1);
 803
 804         return start;
 805 }
 806
 807
 808 static int get_max_name_idx(char *input)
 809 {
 810         unsigned int cur_idx;
 811         char *str, *p;
 812
 813         p = str = strdup(input);
 814         for (cur_idx = 0; ; cur_idx++)
 815                 if (get_next_name(&str) == NULL)
 816                         break;
 817
 818         free(p);
 819         return cur_idx;
 820 }
 821
 822 /*
 823  * Returns the directory at the index, indexes > entires will be
 824  * assigned via modulo division of the index
 825  */
 826 int set_name_idx(char *target, size_t tlen, char *input, int index)
 827 {
 828         unsigned int cur_idx;
 829         int len;
 830         char *fname, *str, *p;
 831
 832         p = str = strdup(input);
 833
 834         index %= get_max_name_idx(input);
 835         for (cur_idx = 0; cur_idx <= index; cur_idx++)
 836                 fname = get_next_name(&str);
 837
 838         if (client_sockaddr_str[0]) {
 839                 len = snprintf(target, tlen, "%s/%s.", fname,
 840                                 client_sockaddr_str);
 841         } else
 842                 len = snprintf(target, tlen, "%s/", fname);
 843
 844         target[tlen - 1] = '\0';
 845         free(p);
 846
 847         return len;
 848 }
 849
 850 static int str_filename_cb(void *data, const char *input)
 851 {
 852         struct thread_data *td = data;
 853         char *fname, *str, *p;
 854
 855         p = str = strdup(input);
 856
 857         strip_blank_front(&str);
 858         strip_blank_end(str);
 859
 860         if (!td->files_index)
 861                 td->o.nr_files = 0;
 862
 863         while ((fname = get_next_name(&str)) != NULL) {
 864                 if (!strlen(fname))
 865                         break;
 866                 add_file(td, fname, 0, 1);
 867         }
 868
 869         free(p);
 870         return 0;
 871 }
 872
 873 static int str_directory_cb(void *data, const char fio_unused *unused)
 874 {
 875         struct thread_data *td = data;
 876         struct stat sb;
 877         char *dirname, *str, *p;
 878         int ret = 0;
 879
 880         if (parse_dryrun())
 881                 return 0;
 882
 883         p = str = strdup(td->o.directory);
 884         while ((dirname = get_next_name(&str)) != NULL) {
 885                 if (lstat(dirname, &sb) < 0) {
 886                         ret = errno;
 887
 888                         log_err("fio: %s is not a directory\n", dirname);
 889                         td_verror(td, ret, "lstat");
 890                         goto out;
 891                 }
 892                 if (!S_ISDIR(sb.st_mode)) {
 893                         log_err("fio: %s is not a directory\n", dirname);
 894                         ret = 1;
 895                         goto out;
 896                 }
 897         }
 898
 899 out:
 900         free(p);
 901         return ret;
 902 }
 903
 904 static int str_opendir_cb(void *data, const char fio_unused *str)
 905 {
 906         struct thread_data *td = data;
 907
 908         if (parse_dryrun())
 909                 return 0;
 910
 911         if (!td->files_index)
 912                 td->o.nr_files = 0;
 913
 914         return add_dir_files(td, td->o.opendir);
 915 }
 916
 917 static int pattern_cb(char *pattern, unsigned int max_size,
 918                       const char *input, unsigned int *pattern_bytes)
 919 {
 920         long off;
 921         int i = 0, j = 0, len, k, base = 10;
 922         uint32_t pattern_length;
 923         char *loc1, *loc2;
 924
 925         /*
 926          * Check if it's a string input
 927          */
 928         loc1 = strchr(input, '\"');
 929         if (loc1) {
 930                 do {
 931                         loc1++;
 932                         if (*loc1 == '\0' || *loc1 == '\"')
 933                                 break;
 934
 935                         pattern[i] = *loc1;
 936                         i++;
 937                 } while (i < max_size);
 938
 939                 if (!i)
 940                         return 1;
 941
 942                 goto fill;
 943         }
 944
 945         /*
 946          * No string, find out if it's decimal or hexidecimal
 947          */
 948         loc1 = strstr(input, "0x");
 949         loc2 = strstr(input, "0X");
 950         if (loc1 || loc2)
 951                 base = 16;
 952         off = strtol(input, NULL, base);
 953         if (off != LONG_MAX || errno != ERANGE) {
 954                 while (off) {
 955                         pattern[i] = off & 0xff;
 956                         off >>= 8;
 957                         i++;
 958                 }
 959         } else {
 960                 len = strlen(input);
 961                 k = len - 1;
 962                 if (base == 16) {
 963                         if (loc1)
 964                                 j = loc1 - input + 2;
 965                         else
 966                                 j = loc2 - input + 2;
 967                 } else
 968                         return 1;
 969                 if (len - j < max_size * 2) {
 970                         while (k >= j) {
 971                                 off = converthexchartoint(input[k--]);
 972                                 if (k >= j)
 973                                         off += (converthexchartoint(input[k--])
 974                                                 * 16);
 975                                 pattern[i++] = (char) off;
 976                         }
 977                 }
 978         }
 979
 980         /*
 981          * Fill the pattern all the way to the end. This greatly reduces
 982          * the number of memcpy's we have to do when verifying the IO.
 983          */
 984 fill:
 985         pattern_length = i;
 986         while (i > 1 && i * 2 <= max_size) {
 987                 memcpy(&pattern[i], &pattern[0], i);
 988                 i *= 2;
 989         }
 990
 991         /*
 992          * Fill remainder, if the pattern multiple ends up not being
 993          * max_size.
 994          */
 995         while (i > 1 && i < max_size) {
 996                 unsigned int b = min(pattern_length, max_size - i);
 997
 998                 memcpy(&pattern[i], &pattern[0], b);
 999                 i += b;
1000         }
1001
1002         if (i == 1) {
1003                 /*
1004                  * The code in verify_io_u_pattern assumes a single byte
1005                  * pattern fills the whole verify pattern buffer.
1006                  */
1007                 memset(pattern, pattern[0], max_size);
1008         }
1009
1010         *pattern_bytes = i;
1011         return 0;
1012 }
1013
1014 static int str_buffer_pattern_cb(void *data, const char *input)
1015 {
1016         struct thread_data *td = data;
1017         int ret;
1018
1019         ret = pattern_cb(td->o.buffer_pattern, MAX_PATTERN_SIZE, input,
1020                                 &td->o.buffer_pattern_bytes);
1021
1022         if (!ret && td->o.buffer_pattern_bytes) {
1023                 if (!td->o.compress_percentage)
1024                         td->o.refill_buffers = 0;
1025                 td->o.scramble_buffers = 0;
1026                 td->o.zero_buffers = 0;
1027         } else {
1028                 log_err("fio: failed parsing pattern `%s`\n", input);
1029                 ret = 1;
1030         }
1031
1032         return ret;
1033 }
1034
1035 static int str_buffer_compress_cb(void *data, unsigned long long *il)
1036 {
1037         struct thread_data *td = data;
1038
1039         td->flags |= TD_F_COMPRESS;
1040         td->o.compress_percentage = *il;
1041         return 0;
1042 }
1043
1044 static int str_dedupe_cb(void *data, unsigned long long *il)
1045 {
1046         struct thread_data *td = data;
1047
1048         td->flags |= TD_F_COMPRESS;
1049         td->o.dedupe_percentage = *il;
1050         td->o.refill_buffers = 1;
1051         return 0;
1052 }
1053
1054 static int str_verify_pattern_cb(void *data, const char *input)
1055 {
1056         struct thread_data *td = data;
1057         int ret;
1058
1059         ret = pattern_cb(td->o.verify_pattern, MAX_PATTERN_SIZE, input,
1060                                 &td->o.verify_pattern_bytes);
1061
1062         /*
1063          * VERIFY_META could already be set
1064          */
1065         if (!ret && td->o.verify == VERIFY_NONE)
1066                 td->o.verify = VERIFY_PATTERN;
1067
1068         return ret;
1069 }
1070
1071 static int str_gtod_reduce_cb(void *data, int *il)
1072 {
1073         struct thread_data *td = data;
1074         int val = *il;
1075
1076         td->o.disable_lat = !!val;
1077         td->o.disable_clat = !!val;
1078         td->o.disable_slat = !!val;
1079         td->o.disable_bw = !!val;
1080         td->o.clat_percentiles = !val;
1081         if (val)
1082                 td->tv_cache_mask = 63;
1083
1084         return 0;
1085 }
1086
1087 static int str_size_cb(void *data, unsigned long long *__val)
1088 {
1089         struct thread_data *td = data;
1090         unsigned long long v = *__val;
1091
1092         if (parse_is_percent(v)) {
1093                 td->o.size = 0;
1094                 td->o.size_percent = -1ULL - v;
1095         } else
1096                 td->o.size = v;
1097
1098         return 0;
1099 }
1100
1101 static int rw_verify(struct fio_option *o, void *data)
1102 {
1103         struct thread_data *td = data;
1104
1105         if (read_only && td_write(td)) {
1106                 log_err("fio: job <%s> has write bit set, but fio is in"
1107                         " read-only mode\n", td->o.name);
1108                 return 1;
1109         }
1110
1111         return 0;
1112 }
1113
1114 static int gtod_cpu_verify(struct fio_option *o, void *data)
1115 {
1116 #ifndef FIO_HAVE_CPU_AFFINITY
1117         struct thread_data *td = data;
1118
1119         if (td->o.gtod_cpu) {
1120                 log_err("fio: platform must support CPU affinity for"
1121                         "gettimeofday() offloading\n");
1122                 return 1;
1123         }
1124 #endif
1125
1126         return 0;
1127 }
1128
1129 /*
1130  * Option grouping
1131  */
1132 static struct opt_group fio_opt_groups[] = {
1133         {
1134                 .name   = "General",
1135                 .mask   = FIO_OPT_C_GENERAL,
1136         },
1137         {
1138                 .name   = "I/O",
1139                 .mask   = FIO_OPT_C_IO,
1140         },
1141         {
1142                 .name   = "File",
1143                 .mask   = FIO_OPT_C_FILE,
1144         },
1145         {
1146                 .name   = "Statistics",
1147                 .mask   = FIO_OPT_C_STAT,
1148         },
1149         {
1150                 .name   = "Logging",
1151                 .mask   = FIO_OPT_C_LOG,
1152         },
1153         {
1154                 .name   = "Profiles",
1155                 .mask   = FIO_OPT_C_PROFILE,
1156         },
1157         {
1158                 .name   = NULL,
1159         },
1160 };
1161
1162 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1163                                                unsigned int inv_mask)
1164 {
1165         struct opt_group *og;
1166         int i;
1167
1168         if (*mask == inv_mask || !*mask)
1169                 return NULL;
1170
1171         for (i = 0; ogs[i].name; i++) {
1172                 og = &ogs[i];
1173
1174                 if (*mask & og->mask) {
1175                         *mask &= ~(og->mask);
1176                         return og;
1177                 }
1178         }
1179
1180         return NULL;
1181 }
1182
1183 struct opt_group *opt_group_from_mask(unsigned int *mask)
1184 {
1185         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1186 }
1187
1188 static struct opt_group fio_opt_cat_groups[] = {
1189         {
1190                 .name   = "Latency profiling",
1191                 .mask   = FIO_OPT_G_LATPROF,
1192         },
1193         {
1194                 .name   = "Rate",
1195                 .mask   = FIO_OPT_G_RATE,
1196         },
1197         {
1198                 .name   = "Zone",
1199                 .mask   = FIO_OPT_G_ZONE,
1200         },
1201         {
1202                 .name   = "Read/write mix",
1203                 .mask   = FIO_OPT_G_RWMIX,
1204         },
1205         {
1206                 .name   = "Verify",
1207                 .mask   = FIO_OPT_G_VERIFY,
1208         },
1209         {
1210                 .name   = "Trim",
1211                 .mask   = FIO_OPT_G_TRIM,
1212         },
1213         {
1214                 .name   = "I/O Logging",
1215                 .mask   = FIO_OPT_G_IOLOG,
1216         },
1217         {
1218                 .name   = "I/O Depth",
1219                 .mask   = FIO_OPT_G_IO_DEPTH,
1220         },
1221         {
1222                 .name   = "I/O Flow",
1223                 .mask   = FIO_OPT_G_IO_FLOW,
1224         },
1225         {
1226                 .name   = "Description",
1227                 .mask   = FIO_OPT_G_DESC,
1228         },
1229         {
1230                 .name   = "Filename",
1231                 .mask   = FIO_OPT_G_FILENAME,
1232         },
1233         {
1234                 .name   = "General I/O",
1235                 .mask   = FIO_OPT_G_IO_BASIC,
1236         },
1237         {
1238                 .name   = "Cgroups",
1239                 .mask   = FIO_OPT_G_CGROUP,
1240         },
1241         {
1242                 .name   = "Runtime",
1243                 .mask   = FIO_OPT_G_RUNTIME,
1244         },
1245         {
1246                 .name   = "Process",
1247                 .mask   = FIO_OPT_G_PROCESS,
1248         },
1249         {
1250                 .name   = "Job credentials / priority",
1251                 .mask   = FIO_OPT_G_CRED,
1252         },
1253         {
1254                 .name   = "Clock settings",
1255                 .mask   = FIO_OPT_G_CLOCK,
1256         },
1257         {
1258                 .name   = "I/O Type",
1259                 .mask   = FIO_OPT_G_IO_TYPE,
1260         },
1261         {
1262                 .name   = "I/O Thinktime",
1263                 .mask   = FIO_OPT_G_THINKTIME,
1264         },
1265         {
1266                 .name   = "Randomizations",
1267                 .mask   = FIO_OPT_G_RANDOM,
1268         },
1269         {
1270                 .name   = "I/O buffers",
1271                 .mask   = FIO_OPT_G_IO_BUF,
1272         },
1273         {
1274                 .name   = "Tiobench profile",
1275                 .mask   = FIO_OPT_G_TIOBENCH,
1276         },
1277         {
1278                 .name   = "MTD",
1279                 .mask   = FIO_OPT_G_MTD,
1280         },
1281
1282         {
1283                 .name   = NULL,
1284         }
1285 };
1286
1287 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1288 {
1289         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1290 }
1291
1292 /*
1293  * Map of job/command line options
1294  */
1295 struct fio_option fio_options[FIO_MAX_OPTS] = {
1296         {
1297                 .name   = "description",
1298                 .lname  = "Description of job",
1299                 .type   = FIO_OPT_STR_STORE,
1300                 .off1   = td_var_offset(description),
1301                 .help   = "Text job description",
1302                 .category = FIO_OPT_C_GENERAL,
1303                 .group  = FIO_OPT_G_DESC,
1304         },
1305         {
1306                 .name   = "name",
1307                 .lname  = "Job name",
1308                 .type   = FIO_OPT_STR_STORE,
1309                 .off1   = td_var_offset(name),
1310                 .help   = "Name of this job",
1311                 .category = FIO_OPT_C_GENERAL,
1312                 .group  = FIO_OPT_G_DESC,
1313         },
1314         {
1315                 .name   = "filename",
1316                 .lname  = "Filename(s)",
1317                 .type   = FIO_OPT_STR_STORE,
1318                 .off1   = td_var_offset(filename),
1319                 .cb     = str_filename_cb,
1320                 .prio   = -1, /* must come after "directory" */
1321                 .help   = "File(s) to use for the workload",
1322                 .category = FIO_OPT_C_FILE,
1323                 .group  = FIO_OPT_G_FILENAME,
1324         },
1325         {
1326                 .name   = "directory",
1327                 .lname  = "Directory",
1328                 .type   = FIO_OPT_STR_STORE,
1329                 .off1   = td_var_offset(directory),
1330                 .cb     = str_directory_cb,
1331                 .help   = "Directory to store files in",
1332                 .category = FIO_OPT_C_FILE,
1333                 .group  = FIO_OPT_G_FILENAME,
1334         },
1335         {
1336                 .name   = "filename_format",
1337                 .type   = FIO_OPT_STR_STORE,
1338                 .off1   = td_var_offset(filename_format),
1339                 .prio   = -1, /* must come after "directory" */
1340                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1341                 .def    = "$jobname.$jobnum.$filenum",
1342                 .category = FIO_OPT_C_FILE,
1343                 .group  = FIO_OPT_G_FILENAME,
1344         },
1345         {
1346                 .name   = "lockfile",
1347                 .lname  = "Lockfile",
1348                 .type   = FIO_OPT_STR,
1349                 .off1   = td_var_offset(file_lock_mode),
1350                 .help   = "Lock file when doing IO to it",
1351                 .prio   = 1,
1352                 .parent = "filename",
1353                 .hide   = 0,
1354                 .def    = "none",
1355                 .category = FIO_OPT_C_FILE,
1356                 .group  = FIO_OPT_G_FILENAME,
1357                 .posval = {
1358                           { .ival = "none",
1359                             .oval = FILE_LOCK_NONE,
1360                             .help = "No file locking",
1361                           },
1362                           { .ival = "exclusive",
1363                             .oval = FILE_LOCK_EXCLUSIVE,
1364                             .help = "Exclusive file lock",
1365                           },
1366                           {
1367                             .ival = "readwrite",
1368                             .oval = FILE_LOCK_READWRITE,
1369                             .help = "Read vs write lock",
1370                           },
1371                 },
1372         },
1373         {
1374                 .name   = "opendir",
1375                 .lname  = "Open directory",
1376                 .type   = FIO_OPT_STR_STORE,
1377                 .off1   = td_var_offset(opendir),
1378                 .cb     = str_opendir_cb,
1379                 .help   = "Recursively add files from this directory and down",
1380                 .category = FIO_OPT_C_FILE,
1381                 .group  = FIO_OPT_G_FILENAME,
1382         },
1383         {
1384                 .name   = "rw",
1385                 .lname  = "Read/write",
1386                 .alias  = "readwrite",
1387                 .type   = FIO_OPT_STR,
1388                 .cb     = str_rw_cb,
1389                 .off1   = td_var_offset(td_ddir),
1390                 .help   = "IO direction",
1391                 .def    = "read",
1392                 .verify = rw_verify,
1393                 .category = FIO_OPT_C_IO,
1394                 .group  = FIO_OPT_G_IO_BASIC,
1395                 .posval = {
1396                           { .ival = "read",
1397                             .oval = TD_DDIR_READ,
1398                             .help = "Sequential read",
1399                           },
1400                           { .ival = "write",
1401                             .oval = TD_DDIR_WRITE,
1402                             .help = "Sequential write",
1403                           },
1404                           { .ival = "trim",
1405                             .oval = TD_DDIR_TRIM,
1406                             .help = "Sequential trim",
1407                           },
1408                           { .ival = "randread",
1409                             .oval = TD_DDIR_RANDREAD,
1410                             .help = "Random read",
1411                           },
1412                           { .ival = "randwrite",
1413                             .oval = TD_DDIR_RANDWRITE,
1414                             .help = "Random write",
1415                           },
1416                           { .ival = "randtrim",
1417                             .oval = TD_DDIR_RANDTRIM,
1418                             .help = "Random trim",
1419                           },
1420                           { .ival = "rw",
1421                             .oval = TD_DDIR_RW,
1422                             .help = "Sequential read and write mix",
1423                           },
1424                           { .ival = "readwrite",
1425                             .oval = TD_DDIR_RW,
1426                             .help = "Sequential read and write mix",
1427                           },
1428                           { .ival = "randrw",
1429                             .oval = TD_DDIR_RANDRW,
1430                             .help = "Random read and write mix"
1431                           },
1432                           { .ival = "trimwrite",
1433                             .oval = TD_DDIR_TRIMWRITE,
1434                             .help = "Trim and write mix, trims preceding writes"
1435                           },
1436                 },
1437         },
1438         {
1439                 .name   = "rw_sequencer",
1440                 .lname  = "RW Sequencer",
1441                 .type   = FIO_OPT_STR,
1442                 .off1   = td_var_offset(rw_seq),
1443                 .help   = "IO offset generator modifier",
1444                 .def    = "sequential",
1445                 .category = FIO_OPT_C_IO,
1446                 .group  = FIO_OPT_G_IO_BASIC,
1447                 .posval = {
1448                           { .ival = "sequential",
1449                             .oval = RW_SEQ_SEQ,
1450                             .help = "Generate sequential offsets",
1451                           },
1452                           { .ival = "identical",
1453                             .oval = RW_SEQ_IDENT,
1454                             .help = "Generate identical offsets",
1455                           },
1456                 },
1457         },
1458
1459         {
1460                 .name   = "ioengine",
1461                 .lname  = "IO Engine",
1462                 .type   = FIO_OPT_STR_STORE,
1463                 .off1   = td_var_offset(ioengine),
1464                 .help   = "IO engine to use",
1465                 .def    = FIO_PREFERRED_ENGINE,
1466                 .category = FIO_OPT_C_IO,
1467                 .group  = FIO_OPT_G_IO_BASIC,
1468                 .posval = {
1469                           { .ival = "sync",
1470                             .help = "Use read/write",
1471                           },
1472                           { .ival = "psync",
1473                             .help = "Use pread/pwrite",
1474                           },
1475                           { .ival = "vsync",
1476                             .help = "Use readv/writev",
1477                           },
1478 #ifdef CONFIG_PWRITEV
1479                           { .ival = "pvsync",
1480                             .help = "Use preadv/pwritev",
1481                           },
1482 #endif
1483 #ifdef CONFIG_LIBAIO
1484                           { .ival = "libaio",
1485                             .help = "Linux native asynchronous IO",
1486                           },
1487 #endif
1488 #ifdef CONFIG_POSIXAIO
1489                           { .ival = "posixaio",
1490                             .help = "POSIX asynchronous IO",
1491                           },
1492 #endif
1493 #ifdef CONFIG_SOLARISAIO
1494                           { .ival = "solarisaio",
1495                             .help = "Solaris native asynchronous IO",
1496                           },
1497 #endif
1498 #ifdef CONFIG_WINDOWSAIO
1499                           { .ival = "windowsaio",
1500                             .help = "Windows native asynchronous IO"
1501                           },
1502 #endif
1503 #ifdef CONFIG_RBD
1504                           { .ival = "rbd",
1505                             .help = "Rados Block Device asynchronous IO"
1506                           },
1507 #endif
1508                           { .ival = "mmap",
1509                             .help = "Memory mapped IO"
1510                           },
1511 #ifdef CONFIG_LINUX_SPLICE
1512                           { .ival = "splice",
1513                             .help = "splice/vmsplice based IO",
1514                           },
1515                           { .ival = "netsplice",
1516                             .help = "splice/vmsplice to/from the network",
1517                           },
1518 #endif
1519 #ifdef FIO_HAVE_SGIO
1520                           { .ival = "sg",
1521                             .help = "SCSI generic v3 IO",
1522                           },
1523 #endif
1524                           { .ival = "null",
1525                             .help = "Testing engine (no data transfer)",
1526                           },
1527                           { .ival = "net",
1528                             .help = "Network IO",
1529                           },
1530                           { .ival = "cpuio",
1531                             .help = "CPU cycle burner engine",
1532                           },
1533 #ifdef CONFIG_GUASI
1534                           { .ival = "guasi",
1535                             .help = "GUASI IO engine",
1536                           },
1537 #endif
1538 #ifdef FIO_HAVE_BINJECT
1539                           { .ival = "binject",
1540                             .help = "binject direct inject block engine",
1541                           },
1542 #endif
1543 #ifdef CONFIG_RDMA
1544                           { .ival = "rdma",
1545                             .help = "RDMA IO engine",
1546                           },
1547 #endif
1548 #ifdef CONFIG_FUSION_AW
1549                           { .ival = "fusion-aw-sync",
1550                             .help = "Fusion-io atomic write engine",
1551                           },
1552 #endif
1553 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1554                           { .ival = "e4defrag",
1555                             .help = "ext4 defrag engine",
1556                           },
1557 #endif
1558 #ifdef CONFIG_LINUX_FALLOCATE
1559                           { .ival = "falloc",
1560                             .help = "fallocate() file based engine",
1561                           },
1562 #endif
1563 #ifdef CONFIG_GFAPI
1564                           { .ival = "gfapi",
1565                             .help = "Glusterfs libgfapi(sync) based engine"
1566                           },
1567                           { .ival = "gfapi_async",
1568                             .help = "Glusterfs libgfapi(async) based engine"
1569                           },
1570 #endif
1571 #ifdef CONFIG_LIBHDFS
1572                           { .ival = "libhdfs",
1573                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1574                           },
1575 #endif
1576                           { .ival = "external",
1577                             .help = "Load external engine (append name)",
1578                           },
1579                 },
1580         },
1581         {
1582                 .name   = "iodepth",
1583                 .lname  = "IO Depth",
1584                 .type   = FIO_OPT_INT,
1585                 .off1   = td_var_offset(iodepth),
1586                 .help   = "Number of IO buffers to keep in flight",
1587                 .minval = 1,
1588                 .interval = 1,
1589                 .def    = "1",
1590                 .category = FIO_OPT_C_IO,
1591                 .group  = FIO_OPT_G_IO_BASIC,
1592         },
1593         {
1594                 .name   = "iodepth_batch",
1595                 .lname  = "IO Depth batch",
1596                 .alias  = "iodepth_batch_submit",
1597                 .type   = FIO_OPT_INT,
1598                 .off1   = td_var_offset(iodepth_batch),
1599                 .help   = "Number of IO buffers to submit in one go",
1600                 .parent = "iodepth",
1601                 .hide   = 1,
1602                 .minval = 1,
1603                 .interval = 1,
1604                 .def    = "1",
1605                 .category = FIO_OPT_C_IO,
1606                 .group  = FIO_OPT_G_IO_BASIC,
1607         },
1608         {
1609                 .name   = "iodepth_batch_complete",
1610                 .lname  = "IO Depth batch complete",
1611                 .type   = FIO_OPT_INT,
1612                 .off1   = td_var_offset(iodepth_batch_complete),
1613                 .help   = "Number of IO buffers to retrieve in one go",
1614                 .parent = "iodepth",
1615                 .hide   = 1,
1616                 .minval = 0,
1617                 .interval = 1,
1618                 .def    = "1",
1619                 .category = FIO_OPT_C_IO,
1620                 .group  = FIO_OPT_G_IO_BASIC,
1621         },
1622         {
1623                 .name   = "iodepth_low",
1624                 .lname  = "IO Depth batch low",
1625                 .type   = FIO_OPT_INT,
1626                 .off1   = td_var_offset(iodepth_low),
1627                 .help   = "Low water mark for queuing depth",
1628                 .parent = "iodepth",
1629                 .hide   = 1,
1630                 .interval = 1,
1631                 .category = FIO_OPT_C_IO,
1632                 .group  = FIO_OPT_G_IO_BASIC,
1633         },
1634         {
1635                 .name   = "io_submit_mode",
1636                 .lname  = "IO submit mode",
1637                 .type   = FIO_OPT_STR,
1638                 .off1   = td_var_offset(io_submit_mode),
1639                 .help   = "How IO submissions and completions are done",
1640                 .def    = "inline",
1641                 .category = FIO_OPT_C_IO,
1642                 .group  = FIO_OPT_G_IO_BASIC,
1643                 .posval = {
1644                           { .ival = "inline",
1645                             .oval = IO_MODE_INLINE,
1646                             .help = "Submit and complete IO inline",
1647                           },
1648                           { .ival = "offload",
1649                             .oval = IO_MODE_OFFLOAD,
1650                             .help = "Offload submit and complete to threads",
1651                           },
1652                 },
1653         },
1654         {
1655                 .name   = "size",
1656                 .lname  = "Size",
1657                 .type   = FIO_OPT_STR_VAL,
1658                 .cb     = str_size_cb,
1659                 .off1   = td_var_offset(size),
1660                 .help   = "Total size of device or files",
1661                 .interval = 1024 * 1024,
1662                 .category = FIO_OPT_C_IO,
1663                 .group  = FIO_OPT_G_INVALID,
1664         },
1665         {
1666                 .name   = "io_size",
1667                 .alias  = "io_limit",
1668                 .lname  = "IO Size",
1669                 .type   = FIO_OPT_STR_VAL,
1670                 .off1   = td_var_offset(io_limit),
1671                 .interval = 1024 * 1024,
1672                 .category = FIO_OPT_C_IO,
1673                 .group  = FIO_OPT_G_INVALID,
1674         },
1675         {
1676                 .name   = "fill_device",
1677                 .lname  = "Fill device",
1678                 .alias  = "fill_fs",
1679                 .type   = FIO_OPT_BOOL,
1680                 .off1   = td_var_offset(fill_device),
1681                 .help   = "Write until an ENOSPC error occurs",
1682                 .def    = "0",
1683                 .category = FIO_OPT_C_FILE,
1684                 .group  = FIO_OPT_G_INVALID,
1685         },
1686         {
1687                 .name   = "filesize",
1688                 .lname  = "File size",
1689                 .type   = FIO_OPT_STR_VAL,
1690                 .off1   = td_var_offset(file_size_low),
1691                 .off2   = td_var_offset(file_size_high),
1692                 .minval = 1,
1693                 .help   = "Size of individual files",
1694                 .interval = 1024 * 1024,
1695                 .category = FIO_OPT_C_FILE,
1696                 .group  = FIO_OPT_G_INVALID,
1697         },
1698         {
1699                 .name   = "file_append",
1700                 .lname  = "File append",
1701                 .type   = FIO_OPT_BOOL,
1702                 .off1   = td_var_offset(file_append),
1703                 .help   = "IO will start at the end of the file(s)",
1704                 .def    = "0",
1705                 .category = FIO_OPT_C_FILE,
1706                 .group  = FIO_OPT_G_INVALID,
1707         },
1708         {
1709                 .name   = "offset",
1710                 .lname  = "IO offset",
1711                 .alias  = "fileoffset",
1712                 .type   = FIO_OPT_STR_VAL,
1713                 .off1   = td_var_offset(start_offset),
1714                 .help   = "Start IO from this offset",
1715                 .def    = "0",
1716                 .interval = 1024 * 1024,
1717                 .category = FIO_OPT_C_IO,
1718                 .group  = FIO_OPT_G_INVALID,
1719         },
1720         {
1721                 .name   = "offset_increment",
1722                 .lname  = "IO offset increment",
1723                 .type   = FIO_OPT_STR_VAL,
1724                 .off1   = td_var_offset(offset_increment),
1725                 .help   = "What is the increment from one offset to the next",
1726                 .parent = "offset",
1727                 .hide   = 1,
1728                 .def    = "0",
1729                 .interval = 1024 * 1024,
1730                 .category = FIO_OPT_C_IO,
1731                 .group  = FIO_OPT_G_INVALID,
1732         },
1733         {
1734                 .name   = "number_ios",
1735                 .lname  = "Number of IOs to perform",
1736                 .type   = FIO_OPT_STR_VAL,
1737                 .off1   = td_var_offset(number_ios),
1738                 .help   = "Force job completion after this number of IOs",
1739                 .def    = "0",
1740                 .category = FIO_OPT_C_IO,
1741                 .group  = FIO_OPT_G_INVALID,
1742         },
1743         {
1744                 .name   = "bs",
1745                 .lname  = "Block size",
1746                 .alias  = "blocksize",
1747                 .type   = FIO_OPT_INT,
1748                 .off1   = td_var_offset(bs[DDIR_READ]),
1749                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1750                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1751                 .minval = 1,
1752                 .help   = "Block size unit",
1753                 .def    = "4k",
1754                 .parent = "rw",
1755                 .hide   = 1,
1756                 .interval = 512,
1757                 .category = FIO_OPT_C_IO,
1758                 .group  = FIO_OPT_G_INVALID,
1759         },
1760         {
1761                 .name   = "ba",
1762                 .lname  = "Block size align",
1763                 .alias  = "blockalign",
1764                 .type   = FIO_OPT_INT,
1765                 .off1   = td_var_offset(ba[DDIR_READ]),
1766                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1767                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1768                 .minval = 1,
1769                 .help   = "IO block offset alignment",
1770                 .parent = "rw",
1771                 .hide   = 1,
1772                 .interval = 512,
1773                 .category = FIO_OPT_C_IO,
1774                 .group  = FIO_OPT_G_INVALID,
1775         },
1776         {
1777                 .name   = "bsrange",
1778                 .lname  = "Block size range",
1779                 .alias  = "blocksize_range",
1780                 .type   = FIO_OPT_RANGE,
1781                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1782                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1783                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1784                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1785                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1786                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1787                 .minval = 1,
1788                 .help   = "Set block size range (in more detail than bs)",
1789                 .parent = "rw",
1790                 .hide   = 1,
1791                 .interval = 4096,
1792                 .category = FIO_OPT_C_IO,
1793                 .group  = FIO_OPT_G_INVALID,
1794         },
1795         {
1796                 .name   = "bssplit",
1797                 .lname  = "Block size split",
1798                 .type   = FIO_OPT_STR,
1799                 .cb     = str_bssplit_cb,
1800                 .off1   = td_var_offset(bssplit),
1801                 .help   = "Set a specific mix of block sizes",
1802                 .parent = "rw",
1803                 .hide   = 1,
1804                 .category = FIO_OPT_C_IO,
1805                 .group  = FIO_OPT_G_INVALID,
1806         },
1807         {
1808                 .name   = "bs_unaligned",
1809                 .lname  = "Block size unaligned",
1810                 .alias  = "blocksize_unaligned",
1811                 .type   = FIO_OPT_STR_SET,
1812                 .off1   = td_var_offset(bs_unaligned),
1813                 .help   = "Don't sector align IO buffer sizes",
1814                 .parent = "rw",
1815                 .hide   = 1,
1816                 .category = FIO_OPT_C_IO,
1817                 .group  = FIO_OPT_G_INVALID,
1818         },
1819         {
1820                 .name   = "bs_is_seq_rand",
1821                 .lname  = "Block size division is seq/random (not read/write)",
1822                 .type   = FIO_OPT_BOOL,
1823                 .off1   = td_var_offset(bs_is_seq_rand),
1824                 .help   = "Consider any blocksize setting to be sequential,random",
1825                 .def    = "0",
1826                 .parent = "blocksize",
1827                 .category = FIO_OPT_C_IO,
1828                 .group  = FIO_OPT_G_INVALID,
1829         },
1830         {
1831                 .name   = "randrepeat",
1832                 .lname  = "Random repeatable",
1833                 .type   = FIO_OPT_BOOL,
1834                 .off1   = td_var_offset(rand_repeatable),
1835                 .help   = "Use repeatable random IO pattern",
1836                 .def    = "1",
1837                 .parent = "rw",
1838                 .hide   = 1,
1839                 .category = FIO_OPT_C_IO,
1840                 .group  = FIO_OPT_G_RANDOM,
1841         },
1842         {
1843                 .name   = "randseed",
1844                 .lname  = "The random generator seed",
1845                 .type   = FIO_OPT_STR_VAL,
1846                 .off1   = td_var_offset(rand_seed),
1847                 .help   = "Set the random generator seed value",
1848                 .def    = "0x89",
1849                 .parent = "rw",
1850                 .category = FIO_OPT_C_IO,
1851                 .group  = FIO_OPT_G_RANDOM,
1852         },
1853         {
1854                 .name   = "use_os_rand",
1855                 .lname  = "Use OS random",
1856                 .type   = FIO_OPT_DEPRECATED,
1857                 .off1   = td_var_offset(dep_use_os_rand),
1858                 .category = FIO_OPT_C_IO,
1859                 .group  = FIO_OPT_G_RANDOM,
1860         },
1861         {
1862                 .name   = "norandommap",
1863                 .lname  = "No randommap",
1864                 .type   = FIO_OPT_STR_SET,
1865                 .off1   = td_var_offset(norandommap),
1866                 .help   = "Accept potential duplicate random blocks",
1867                 .parent = "rw",
1868                 .hide   = 1,
1869                 .hide_on_set = 1,
1870                 .category = FIO_OPT_C_IO,
1871                 .group  = FIO_OPT_G_RANDOM,
1872         },
1873         {
1874                 .name   = "softrandommap",
1875                 .lname  = "Soft randommap",
1876                 .type   = FIO_OPT_BOOL,
1877                 .off1   = td_var_offset(softrandommap),
1878                 .help   = "Set norandommap if randommap allocation fails",
1879                 .parent = "norandommap",
1880                 .hide   = 1,
1881                 .def    = "0",
1882                 .category = FIO_OPT_C_IO,
1883                 .group  = FIO_OPT_G_RANDOM,
1884         },
1885         {
1886                 .name   = "random_generator",
1887                 .type   = FIO_OPT_STR,
1888                 .off1   = td_var_offset(random_generator),
1889                 .help   = "Type of random number generator to use",
1890                 .def    = "tausworthe",
1891                 .posval = {
1892                           { .ival = "tausworthe",
1893                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1894                             .help = "Strong Tausworthe generator",
1895                           },
1896                           { .ival = "lfsr",
1897                             .oval = FIO_RAND_GEN_LFSR,
1898                             .help = "Variable length LFSR",
1899                           },
1900                 },
1901                 .category = FIO_OPT_C_IO,
1902                 .group  = FIO_OPT_G_RANDOM,
1903         },
1904         {
1905                 .name   = "random_distribution",
1906                 .type   = FIO_OPT_STR,
1907                 .off1   = td_var_offset(random_distribution),
1908                 .cb     = str_random_distribution_cb,
1909                 .help   = "Random offset distribution generator",
1910                 .def    = "random",
1911                 .posval = {
1912                           { .ival = "random",
1913                             .oval = FIO_RAND_DIST_RANDOM,
1914                             .help = "Completely random",
1915                           },
1916                           { .ival = "zipf",
1917                             .oval = FIO_RAND_DIST_ZIPF,
1918                             .help = "Zipf distribution",
1919                           },
1920                           { .ival = "pareto",
1921                             .oval = FIO_RAND_DIST_PARETO,
1922                             .help = "Pareto distribution",
1923                           },
1924                           { .ival = "normal",
1925                             .oval = FIO_RAND_DIST_GAUSS,
1926                             .help = "Normal (gaussian) distribution",
1927                           },
1928                 },
1929                 .category = FIO_OPT_C_IO,
1930                 .group  = FIO_OPT_G_RANDOM,
1931         },
1932         {
1933                 .name   = "percentage_random",
1934                 .lname  = "Percentage Random",
1935                 .type   = FIO_OPT_INT,
1936                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1937                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1938                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1939                 .maxval = 100,
1940                 .help   = "Percentage of seq/random mix that should be random",
1941                 .def    = "100,100,100",
1942                 .interval = 5,
1943                 .inverse = "percentage_sequential",
1944                 .category = FIO_OPT_C_IO,
1945                 .group  = FIO_OPT_G_RANDOM,
1946         },
1947         {
1948                 .name   = "percentage_sequential",
1949                 .lname  = "Percentage Sequential",
1950                 .type   = FIO_OPT_DEPRECATED,
1951                 .category = FIO_OPT_C_IO,
1952                 .group  = FIO_OPT_G_RANDOM,
1953         },
1954         {
1955                 .name   = "allrandrepeat",
1956                 .type   = FIO_OPT_BOOL,
1957                 .off1   = td_var_offset(allrand_repeatable),
1958                 .help   = "Use repeatable random numbers for everything",
1959                 .def    = "0",
1960                 .category = FIO_OPT_C_IO,
1961                 .group  = FIO_OPT_G_RANDOM,
1962         },
1963         {
1964                 .name   = "nrfiles",
1965                 .lname  = "Number of files",
1966                 .alias  = "nr_files",
1967                 .type   = FIO_OPT_INT,
1968                 .off1   = td_var_offset(nr_files),
1969                 .help   = "Split job workload between this number of files",
1970                 .def    = "1",
1971                 .interval = 1,
1972                 .category = FIO_OPT_C_FILE,
1973                 .group  = FIO_OPT_G_INVALID,
1974         },
1975         {
1976                 .name   = "openfiles",
1977                 .lname  = "Number of open files",
1978                 .type   = FIO_OPT_INT,
1979                 .off1   = td_var_offset(open_files),
1980                 .help   = "Number of files to keep open at the same time",
1981                 .category = FIO_OPT_C_FILE,
1982                 .group  = FIO_OPT_G_INVALID,
1983         },
1984         {
1985                 .name   = "file_service_type",
1986                 .lname  = "File service type",
1987                 .type   = FIO_OPT_STR,
1988                 .cb     = str_fst_cb,
1989                 .off1   = td_var_offset(file_service_type),
1990                 .help   = "How to select which file to service next",
1991                 .def    = "roundrobin",
1992                 .category = FIO_OPT_C_FILE,
1993                 .group  = FIO_OPT_G_INVALID,
1994                 .posval = {
1995                           { .ival = "random",
1996                             .oval = FIO_FSERVICE_RANDOM,
1997                             .help = "Choose a file at random",
1998                           },
1999                           { .ival = "roundrobin",
2000                             .oval = FIO_FSERVICE_RR,
2001                             .help = "Round robin select files",
2002                           },
2003                           { .ival = "sequential",
2004                             .oval = FIO_FSERVICE_SEQ,
2005                             .help = "Finish one file before moving to the next",
2006                           },
2007                 },
2008                 .parent = "nrfiles",
2009                 .hide   = 1,
2010         },
2011 #ifdef CONFIG_POSIX_FALLOCATE
2012         {
2013                 .name   = "fallocate",
2014                 .lname  = "Fallocate",
2015                 .type   = FIO_OPT_STR,
2016                 .off1   = td_var_offset(fallocate_mode),
2017                 .help   = "Whether pre-allocation is performed when laying out files",
2018                 .def    = "posix",
2019                 .category = FIO_OPT_C_FILE,
2020                 .group  = FIO_OPT_G_INVALID,
2021                 .posval = {
2022                           { .ival = "none",
2023                             .oval = FIO_FALLOCATE_NONE,
2024                             .help = "Do not pre-allocate space",
2025                           },
2026                           { .ival = "posix",
2027                             .oval = FIO_FALLOCATE_POSIX,
2028                             .help = "Use posix_fallocate()",
2029                           },
2030 #ifdef CONFIG_LINUX_FALLOCATE
2031                           { .ival = "keep",
2032                             .oval = FIO_FALLOCATE_KEEP_SIZE,
2033                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
2034                           },
2035 #endif
2036                           /* Compatibility with former boolean values */
2037                           { .ival = "0",
2038                             .oval = FIO_FALLOCATE_NONE,
2039                             .help = "Alias for 'none'",
2040                           },
2041                           { .ival = "1",
2042                             .oval = FIO_FALLOCATE_POSIX,
2043                             .help = "Alias for 'posix'",
2044                           },
2045                 },
2046         },
2047 #endif  /* CONFIG_POSIX_FALLOCATE */
2048         {
2049                 .name   = "fadvise_hint",
2050                 .lname  = "Fadvise hint",
2051                 .type   = FIO_OPT_BOOL,
2052                 .off1   = td_var_offset(fadvise_hint),
2053                 .help   = "Use fadvise() to advise the kernel on IO pattern",
2054                 .def    = "1",
2055                 .category = FIO_OPT_C_FILE,
2056                 .group  = FIO_OPT_G_INVALID,
2057         },
2058 #ifdef FIO_HAVE_STREAMID
2059         {
2060                 .name   = "fadvise_stream",
2061                 .lname  = "Fadvise stream",
2062                 .type   = FIO_OPT_INT,
2063                 .off1   = td_var_offset(fadvise_stream),
2064                 .help   = "Use fadvise() to set stream ID",
2065                 .category = FIO_OPT_C_FILE,
2066                 .group  = FIO_OPT_G_INVALID,
2067         },
2068 #endif
2069         {
2070                 .name   = "fsync",
2071                 .lname  = "Fsync",
2072                 .type   = FIO_OPT_INT,
2073                 .off1   = td_var_offset(fsync_blocks),
2074                 .help   = "Issue fsync for writes every given number of blocks",
2075                 .def    = "0",
2076                 .interval = 1,
2077                 .category = FIO_OPT_C_FILE,
2078                 .group  = FIO_OPT_G_INVALID,
2079         },
2080         {
2081                 .name   = "fdatasync",
2082                 .lname  = "Fdatasync",
2083                 .type   = FIO_OPT_INT,
2084                 .off1   = td_var_offset(fdatasync_blocks),
2085                 .help   = "Issue fdatasync for writes every given number of blocks",
2086                 .def    = "0",
2087                 .interval = 1,
2088                 .category = FIO_OPT_C_FILE,
2089                 .group  = FIO_OPT_G_INVALID,
2090         },
2091         {
2092                 .name   = "write_barrier",
2093                 .lname  = "Write barrier",
2094                 .type   = FIO_OPT_INT,
2095                 .off1   = td_var_offset(barrier_blocks),
2096                 .help   = "Make every Nth write a barrier write",
2097                 .def    = "0",
2098                 .interval = 1,
2099                 .category = FIO_OPT_C_IO,
2100                 .group  = FIO_OPT_G_INVALID,
2101         },
2102 #ifdef CONFIG_SYNC_FILE_RANGE
2103         {
2104                 .name   = "sync_file_range",
2105                 .lname  = "Sync file range",
2106                 .posval = {
2107                           { .ival = "wait_before",
2108                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2109                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2110                             .orval  = 1,
2111                           },
2112                           { .ival = "write",
2113                             .oval = SYNC_FILE_RANGE_WRITE,
2114                             .help = "SYNC_FILE_RANGE_WRITE",
2115                             .orval  = 1,
2116                           },
2117                           {
2118                             .ival = "wait_after",
2119                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2120                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2121                             .orval  = 1,
2122                           },
2123                 },
2124                 .type   = FIO_OPT_STR_MULTI,
2125                 .cb     = str_sfr_cb,
2126                 .off1   = td_var_offset(sync_file_range),
2127                 .help   = "Use sync_file_range()",
2128                 .category = FIO_OPT_C_FILE,
2129                 .group  = FIO_OPT_G_INVALID,
2130         },
2131 #endif
2132         {
2133                 .name   = "direct",
2134                 .lname  = "Direct I/O",
2135                 .type   = FIO_OPT_BOOL,
2136                 .off1   = td_var_offset(odirect),
2137                 .help   = "Use O_DIRECT IO (negates buffered)",
2138                 .def    = "0",
2139                 .inverse = "buffered",
2140                 .category = FIO_OPT_C_IO,
2141                 .group  = FIO_OPT_G_IO_TYPE,
2142         },
2143         {
2144                 .name   = "atomic",
2145                 .lname  = "Atomic I/O",
2146                 .type   = FIO_OPT_BOOL,
2147                 .off1   = td_var_offset(oatomic),
2148                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2149                 .def    = "0",
2150                 .category = FIO_OPT_C_IO,
2151                 .group  = FIO_OPT_G_IO_TYPE,
2152         },
2153         {
2154                 .name   = "buffered",
2155                 .lname  = "Buffered I/O",
2156                 .type   = FIO_OPT_BOOL,
2157                 .off1   = td_var_offset(odirect),
2158                 .neg    = 1,
2159                 .help   = "Use buffered IO (negates direct)",
2160                 .def    = "1",
2161                 .inverse = "direct",
2162                 .category = FIO_OPT_C_IO,
2163                 .group  = FIO_OPT_G_IO_TYPE,
2164         },
2165         {
2166                 .name   = "overwrite",
2167                 .lname  = "Overwrite",
2168                 .type   = FIO_OPT_BOOL,
2169                 .off1   = td_var_offset(overwrite),
2170                 .help   = "When writing, set whether to overwrite current data",
2171                 .def    = "0",
2172                 .category = FIO_OPT_C_FILE,
2173                 .group  = FIO_OPT_G_INVALID,
2174         },
2175         {
2176                 .name   = "loops",
2177                 .lname  = "Loops",
2178                 .type   = FIO_OPT_INT,
2179                 .off1   = td_var_offset(loops),
2180                 .help   = "Number of times to run the job",
2181                 .def    = "1",
2182                 .interval = 1,
2183                 .category = FIO_OPT_C_GENERAL,
2184                 .group  = FIO_OPT_G_RUNTIME,
2185         },
2186         {
2187                 .name   = "numjobs",
2188                 .lname  = "Number of jobs",
2189                 .type   = FIO_OPT_INT,
2190                 .off1   = td_var_offset(numjobs),
2191                 .help   = "Duplicate this job this many times",
2192                 .def    = "1",
2193                 .interval = 1,
2194                 .category = FIO_OPT_C_GENERAL,
2195                 .group  = FIO_OPT_G_RUNTIME,
2196         },
2197         {
2198                 .name   = "startdelay",
2199                 .lname  = "Start delay",
2200                 .type   = FIO_OPT_STR_VAL_TIME,
2201                 .off1   = td_var_offset(start_delay),
2202                 .off2   = td_var_offset(start_delay_high),
2203                 .help   = "Only start job when this period has passed",
2204                 .def    = "0",
2205                 .is_seconds = 1,
2206                 .is_time = 1,
2207                 .category = FIO_OPT_C_GENERAL,
2208                 .group  = FIO_OPT_G_RUNTIME,
2209         },
2210         {
2211                 .name   = "runtime",
2212                 .lname  = "Runtime",
2213                 .alias  = "timeout",
2214                 .type   = FIO_OPT_STR_VAL_TIME,
2215                 .off1   = td_var_offset(timeout),
2216                 .help   = "Stop workload when this amount of time has passed",
2217                 .def    = "0",
2218                 .is_seconds = 1,
2219                 .is_time = 1,
2220                 .category = FIO_OPT_C_GENERAL,
2221                 .group  = FIO_OPT_G_RUNTIME,
2222         },
2223         {
2224                 .name   = "time_based",
2225                 .lname  = "Time based",
2226                 .type   = FIO_OPT_STR_SET,
2227                 .off1   = td_var_offset(time_based),
2228                 .help   = "Keep running until runtime/timeout is met",
2229                 .category = FIO_OPT_C_GENERAL,
2230                 .group  = FIO_OPT_G_RUNTIME,
2231         },
2232         {
2233                 .name   = "verify_only",
2234                 .lname  = "Verify only",
2235                 .type   = FIO_OPT_STR_SET,
2236                 .off1   = td_var_offset(verify_only),
2237                 .help   = "Verifies previously written data is still valid",
2238                 .category = FIO_OPT_C_GENERAL,
2239                 .group  = FIO_OPT_G_RUNTIME,
2240         },
2241         {
2242                 .name   = "ramp_time",
2243                 .lname  = "Ramp time",
2244                 .type   = FIO_OPT_STR_VAL_TIME,
2245                 .off1   = td_var_offset(ramp_time),
2246                 .help   = "Ramp up time before measuring performance",
2247                 .is_seconds = 1,
2248                 .is_time = 1,
2249                 .category = FIO_OPT_C_GENERAL,
2250                 .group  = FIO_OPT_G_RUNTIME,
2251         },
2252         {
2253                 .name   = "clocksource",
2254                 .lname  = "Clock source",
2255                 .type   = FIO_OPT_STR,
2256                 .cb     = fio_clock_source_cb,
2257                 .off1   = td_var_offset(clocksource),
2258                 .help   = "What type of timing source to use",
2259                 .category = FIO_OPT_C_GENERAL,
2260                 .group  = FIO_OPT_G_CLOCK,
2261                 .posval = {
2262 #ifdef CONFIG_GETTIMEOFDAY
2263                           { .ival = "gettimeofday",
2264                             .oval = CS_GTOD,
2265                             .help = "Use gettimeofday(2) for timing",
2266                           },
2267 #endif
2268 #ifdef CONFIG_CLOCK_GETTIME
2269                           { .ival = "clock_gettime",
2270                             .oval = CS_CGETTIME,
2271                             .help = "Use clock_gettime(2) for timing",
2272                           },
2273 #endif
2274 #ifdef ARCH_HAVE_CPU_CLOCK
2275                           { .ival = "cpu",
2276                             .oval = CS_CPUCLOCK,
2277                             .help = "Use CPU private clock",
2278                           },
2279 #endif
2280                 },
2281         },
2282         {
2283                 .name   = "mem",
2284                 .alias  = "iomem",
2285                 .lname  = "I/O Memory",
2286                 .type   = FIO_OPT_STR,
2287                 .cb     = str_mem_cb,
2288                 .off1   = td_var_offset(mem_type),
2289                 .help   = "Backing type for IO buffers",
2290                 .def    = "malloc",
2291                 .category = FIO_OPT_C_IO,
2292                 .group  = FIO_OPT_G_INVALID,
2293                 .posval = {
2294                           { .ival = "malloc",
2295                             .oval = MEM_MALLOC,
2296                             .help = "Use malloc(3) for IO buffers",
2297                           },
2298 #ifndef CONFIG_NO_SHM
2299                           { .ival = "shm",
2300                             .oval = MEM_SHM,
2301                             .help = "Use shared memory segments for IO buffers",
2302                           },
2303 #ifdef FIO_HAVE_HUGETLB
2304                           { .ival = "shmhuge",
2305                             .oval = MEM_SHMHUGE,
2306                             .help = "Like shm, but use huge pages",
2307                           },
2308 #endif
2309 #endif
2310                           { .ival = "mmap",
2311                             .oval = MEM_MMAP,
2312                             .help = "Use mmap(2) (file or anon) for IO buffers",
2313                           },
2314 #ifdef FIO_HAVE_HUGETLB
2315                           { .ival = "mmaphuge",
2316                             .oval = MEM_MMAPHUGE,
2317                             .help = "Like mmap, but use huge pages",
2318                           },
2319 #endif
2320                   },
2321         },
2322         {
2323                 .name   = "iomem_align",
2324                 .alias  = "mem_align",
2325                 .lname  = "I/O memory alignment",
2326                 .type   = FIO_OPT_INT,
2327                 .off1   = td_var_offset(mem_align),
2328                 .minval = 0,
2329                 .help   = "IO memory buffer offset alignment",
2330                 .def    = "0",
2331                 .parent = "iomem",
2332                 .hide   = 1,
2333                 .category = FIO_OPT_C_IO,
2334                 .group  = FIO_OPT_G_INVALID,
2335         },
2336         {
2337                 .name   = "verify",
2338                 .lname  = "Verify",
2339                 .type   = FIO_OPT_STR,
2340                 .off1   = td_var_offset(verify),
2341                 .help   = "Verify data written",
2342                 .def    = "0",
2343                 .category = FIO_OPT_C_IO,
2344                 .group  = FIO_OPT_G_VERIFY,
2345                 .posval = {
2346                           { .ival = "0",
2347                             .oval = VERIFY_NONE,
2348                             .help = "Don't do IO verification",
2349                           },
2350                           { .ival = "md5",
2351                             .oval = VERIFY_MD5,
2352                             .help = "Use md5 checksums for verification",
2353                           },
2354                           { .ival = "crc64",
2355                             .oval = VERIFY_CRC64,
2356                             .help = "Use crc64 checksums for verification",
2357                           },
2358                           { .ival = "crc32",
2359                             .oval = VERIFY_CRC32,
2360                             .help = "Use crc32 checksums for verification",
2361                           },
2362                           { .ival = "crc32c-intel",
2363                             .oval = VERIFY_CRC32C,
2364                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2365                           },
2366                           { .ival = "crc32c",
2367                             .oval = VERIFY_CRC32C,
2368                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2369                           },
2370                           { .ival = "crc16",
2371                             .oval = VERIFY_CRC16,
2372                             .help = "Use crc16 checksums for verification",
2373                           },
2374                           { .ival = "crc7",
2375                             .oval = VERIFY_CRC7,
2376                             .help = "Use crc7 checksums for verification",
2377                           },
2378                           { .ival = "sha1",
2379                             .oval = VERIFY_SHA1,
2380                             .help = "Use sha1 checksums for verification",
2381                           },
2382                           { .ival = "sha256",
2383                             .oval = VERIFY_SHA256,
2384                             .help = "Use sha256 checksums for verification",
2385                           },
2386                           { .ival = "sha512",
2387                             .oval = VERIFY_SHA512,
2388                             .help = "Use sha512 checksums for verification",
2389                           },
2390                           { .ival = "xxhash",
2391                             .oval = VERIFY_XXHASH,
2392                             .help = "Use xxhash checksums for verification",
2393                           },
2394                           { .ival = "meta",
2395                             .oval = VERIFY_META,
2396                             .help = "Use io information",
2397                           },
2398                           {
2399                             .ival = "null",
2400                             .oval = VERIFY_NULL,
2401                             .help = "Pretend to verify",
2402                           },
2403                 },
2404         },
2405         {
2406                 .name   = "do_verify",
2407                 .lname  = "Perform verify step",
2408                 .type   = FIO_OPT_BOOL,
2409                 .off1   = td_var_offset(do_verify),
2410                 .help   = "Run verification stage after write",
2411                 .def    = "1",
2412                 .parent = "verify",
2413                 .hide   = 1,
2414                 .category = FIO_OPT_C_IO,
2415                 .group  = FIO_OPT_G_VERIFY,
2416         },
2417         {
2418                 .name   = "verifysort",
2419                 .lname  = "Verify sort",
2420                 .type   = FIO_OPT_BOOL,
2421                 .off1   = td_var_offset(verifysort),
2422                 .help   = "Sort written verify blocks for read back",
2423                 .def    = "1",
2424                 .parent = "verify",
2425                 .hide   = 1,
2426                 .category = FIO_OPT_C_IO,
2427                 .group  = FIO_OPT_G_VERIFY,
2428         },
2429         {
2430                 .name   = "verifysort_nr",
2431                 .type   = FIO_OPT_INT,
2432                 .off1   = td_var_offset(verifysort_nr),
2433                 .help   = "Pre-load and sort verify blocks for a read workload",
2434                 .minval = 0,
2435                 .maxval = 131072,
2436                 .def    = "1024",
2437                 .parent = "verify",
2438                 .category = FIO_OPT_C_IO,
2439                 .group  = FIO_OPT_G_VERIFY,
2440         },
2441         {
2442                 .name   = "verify_interval",
2443                 .lname  = "Verify interval",
2444                 .type   = FIO_OPT_INT,
2445                 .off1   = td_var_offset(verify_interval),
2446                 .minval = 2 * sizeof(struct verify_header),
2447                 .help   = "Store verify buffer header every N bytes",
2448                 .parent = "verify",
2449                 .hide   = 1,
2450                 .interval = 2 * sizeof(struct verify_header),
2451                 .category = FIO_OPT_C_IO,
2452                 .group  = FIO_OPT_G_VERIFY,
2453         },
2454         {
2455                 .name   = "verify_offset",
2456                 .lname  = "Verify offset",
2457                 .type   = FIO_OPT_INT,
2458                 .help   = "Offset verify header location by N bytes",
2459                 .off1   = td_var_offset(verify_offset),
2460                 .minval = sizeof(struct verify_header),
2461                 .parent = "verify",
2462                 .hide   = 1,
2463                 .category = FIO_OPT_C_IO,
2464                 .group  = FIO_OPT_G_VERIFY,
2465         },
2466         {
2467                 .name   = "verify_pattern",
2468                 .lname  = "Verify pattern",
2469                 .type   = FIO_OPT_STR,
2470                 .cb     = str_verify_pattern_cb,
2471                 .off1   = td_var_offset(verify_pattern),
2472                 .help   = "Fill pattern for IO buffers",
2473                 .parent = "verify",
2474                 .hide   = 1,
2475                 .category = FIO_OPT_C_IO,
2476                 .group  = FIO_OPT_G_VERIFY,
2477         },
2478         {
2479                 .name   = "verify_fatal",
2480                 .lname  = "Verify fatal",
2481                 .type   = FIO_OPT_BOOL,
2482                 .off1   = td_var_offset(verify_fatal),
2483                 .def    = "0",
2484                 .help   = "Exit on a single verify failure, don't continue",
2485                 .parent = "verify",
2486                 .hide   = 1,
2487                 .category = FIO_OPT_C_IO,
2488                 .group  = FIO_OPT_G_VERIFY,
2489         },
2490         {
2491                 .name   = "verify_dump",
2492                 .lname  = "Verify dump",
2493                 .type   = FIO_OPT_BOOL,
2494                 .off1   = td_var_offset(verify_dump),
2495                 .def    = "0",
2496                 .help   = "Dump contents of good and bad blocks on failure",
2497                 .parent = "verify",
2498                 .hide   = 1,
2499                 .category = FIO_OPT_C_IO,
2500                 .group  = FIO_OPT_G_VERIFY,
2501         },
2502         {
2503                 .name   = "verify_async",
2504                 .lname  = "Verify asynchronously",
2505                 .type   = FIO_OPT_INT,
2506                 .off1   = td_var_offset(verify_async),
2507                 .def    = "0",
2508                 .help   = "Number of async verifier threads to use",
2509                 .parent = "verify",
2510                 .hide   = 1,
2511                 .category = FIO_OPT_C_IO,
2512                 .group  = FIO_OPT_G_VERIFY,
2513         },
2514         {
2515                 .name   = "verify_backlog",
2516                 .lname  = "Verify backlog",
2517                 .type   = FIO_OPT_STR_VAL,
2518                 .off1   = td_var_offset(verify_backlog),
2519                 .help   = "Verify after this number of blocks are written",
2520                 .parent = "verify",
2521                 .hide   = 1,
2522                 .category = FIO_OPT_C_IO,
2523                 .group  = FIO_OPT_G_VERIFY,
2524         },
2525         {
2526                 .name   = "verify_backlog_batch",
2527                 .lname  = "Verify backlog batch",
2528                 .type   = FIO_OPT_INT,
2529                 .off1   = td_var_offset(verify_batch),
2530                 .help   = "Verify this number of IO blocks",
2531                 .parent = "verify",
2532                 .hide   = 1,
2533                 .category = FIO_OPT_C_IO,
2534                 .group  = FIO_OPT_G_VERIFY,
2535         },
2536 #ifdef FIO_HAVE_CPU_AFFINITY
2537         {
2538                 .name   = "verify_async_cpus",
2539                 .lname  = "Async verify CPUs",
2540                 .type   = FIO_OPT_STR,
2541                 .cb     = str_verify_cpus_allowed_cb,
2542                 .off1   = td_var_offset(verify_cpumask),
2543                 .help   = "Set CPUs allowed for async verify threads",
2544                 .parent = "verify_async",
2545                 .hide   = 1,
2546                 .category = FIO_OPT_C_IO,
2547                 .group  = FIO_OPT_G_VERIFY,
2548         },
2549 #endif
2550         {
2551                 .name   = "experimental_verify",
2552                 .off1   = td_var_offset(experimental_verify),
2553                 .type   = FIO_OPT_BOOL,
2554                 .help   = "Enable experimental verification",
2555                 .parent = "verify",
2556                 .category = FIO_OPT_C_IO,
2557                 .group  = FIO_OPT_G_VERIFY,
2558         },
2559         {
2560                 .name   = "verify_state_load",
2561                 .lname  = "Load verify state",
2562                 .off1   = td_var_offset(verify_state),
2563                 .type   = FIO_OPT_BOOL,
2564                 .help   = "Load verify termination state",
2565                 .parent = "verify",
2566                 .category = FIO_OPT_C_IO,
2567                 .group  = FIO_OPT_G_VERIFY,
2568         },
2569         {
2570                 .name   = "verify_state_save",
2571                 .lname  = "Save verify state",
2572                 .off1   = td_var_offset(verify_state_save),
2573                 .type   = FIO_OPT_BOOL,
2574                 .def    = "1",
2575                 .help   = "Save verify state on termination",
2576                 .parent = "verify",
2577                 .category = FIO_OPT_C_IO,
2578                 .group  = FIO_OPT_G_VERIFY,
2579         },
2580 #ifdef FIO_HAVE_TRIM
2581         {
2582                 .name   = "trim_percentage",
2583                 .lname  = "Trim percentage",
2584                 .type   = FIO_OPT_INT,
2585                 .off1   = td_var_offset(trim_percentage),
2586                 .minval = 0,
2587                 .maxval = 100,
2588                 .help   = "Number of verify blocks to discard/trim",
2589                 .parent = "verify",
2590                 .def    = "0",
2591                 .interval = 1,
2592                 .hide   = 1,
2593                 .category = FIO_OPT_C_IO,
2594                 .group  = FIO_OPT_G_TRIM,
2595         },
2596         {
2597                 .name   = "trim_verify_zero",
2598                 .lname  = "Verify trim zero",
2599                 .type   = FIO_OPT_BOOL,
2600                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2601                 .off1   = td_var_offset(trim_zero),
2602                 .parent = "trim_percentage",
2603                 .hide   = 1,
2604                 .def    = "1",
2605                 .category = FIO_OPT_C_IO,
2606                 .group  = FIO_OPT_G_TRIM,
2607         },
2608         {
2609                 .name   = "trim_backlog",
2610                 .lname  = "Trim backlog",
2611                 .type   = FIO_OPT_STR_VAL,
2612                 .off1   = td_var_offset(trim_backlog),
2613                 .help   = "Trim after this number of blocks are written",
2614                 .parent = "trim_percentage",
2615                 .hide   = 1,
2616                 .interval = 1,
2617                 .category = FIO_OPT_C_IO,
2618                 .group  = FIO_OPT_G_TRIM,
2619         },
2620         {
2621                 .name   = "trim_backlog_batch",
2622                 .lname  = "Trim backlog batch",
2623                 .type   = FIO_OPT_INT,
2624                 .off1   = td_var_offset(trim_batch),
2625                 .help   = "Trim this number of IO blocks",
2626                 .parent = "trim_percentage",
2627                 .hide   = 1,
2628                 .interval = 1,
2629                 .category = FIO_OPT_C_IO,
2630                 .group  = FIO_OPT_G_TRIM,
2631         },
2632 #endif
2633         {
2634                 .name   = "write_iolog",
2635                 .lname  = "Write I/O log",
2636                 .type   = FIO_OPT_STR_STORE,
2637                 .off1   = td_var_offset(write_iolog_file),
2638                 .help   = "Store IO pattern to file",
2639                 .category = FIO_OPT_C_IO,
2640                 .group  = FIO_OPT_G_IOLOG,
2641         },
2642         {
2643                 .name   = "read_iolog",
2644                 .lname  = "Read I/O log",
2645                 .type   = FIO_OPT_STR_STORE,
2646                 .off1   = td_var_offset(read_iolog_file),
2647                 .help   = "Playback IO pattern from file",
2648                 .category = FIO_OPT_C_IO,
2649                 .group  = FIO_OPT_G_IOLOG,
2650         },
2651         {
2652                 .name   = "replay_no_stall",
2653                 .lname  = "Don't stall on replay",
2654                 .type   = FIO_OPT_BOOL,
2655                 .off1   = td_var_offset(no_stall),
2656                 .def    = "0",
2657                 .parent = "read_iolog",
2658                 .hide   = 1,
2659                 .help   = "Playback IO pattern file as fast as possible without stalls",
2660                 .category = FIO_OPT_C_IO,
2661                 .group  = FIO_OPT_G_IOLOG,
2662         },
2663         {
2664                 .name   = "replay_redirect",
2665                 .lname  = "Redirect device for replay",
2666                 .type   = FIO_OPT_STR_STORE,
2667                 .off1   = td_var_offset(replay_redirect),
2668                 .parent = "read_iolog",
2669                 .hide   = 1,
2670                 .help   = "Replay all I/O onto this device, regardless of trace device",
2671                 .category = FIO_OPT_C_IO,
2672                 .group  = FIO_OPT_G_IOLOG,
2673         },
2674         {
2675                 .name   = "replay_scale",
2676                 .lname  = "Replace offset scale factor",
2677                 .type   = FIO_OPT_INT,
2678                 .off1   = td_var_offset(replay_scale),
2679                 .parent = "read_iolog",
2680                 .def    = "1",
2681                 .help   = "Align offsets to this blocksize",
2682                 .category = FIO_OPT_C_IO,
2683                 .group  = FIO_OPT_G_IOLOG,
2684         },
2685         {
2686                 .name   = "replay_align",
2687                 .lname  = "Replace alignment",
2688                 .type   = FIO_OPT_INT,
2689                 .off1   = td_var_offset(replay_align),
2690                 .parent = "read_iolog",
2691                 .help   = "Scale offset down by this factor",
2692                 .category = FIO_OPT_C_IO,
2693                 .group  = FIO_OPT_G_IOLOG,
2694                 .pow2   = 1,
2695         },
2696         {
2697                 .name   = "exec_prerun",
2698                 .lname  = "Pre-execute runnable",
2699                 .type   = FIO_OPT_STR_STORE,
2700                 .off1   = td_var_offset(exec_prerun),
2701                 .help   = "Execute this file prior to running job",
2702                 .category = FIO_OPT_C_GENERAL,
2703                 .group  = FIO_OPT_G_INVALID,
2704         },
2705         {
2706                 .name   = "exec_postrun",
2707                 .lname  = "Post-execute runnable",
2708                 .type   = FIO_OPT_STR_STORE,
2709                 .off1   = td_var_offset(exec_postrun),
2710                 .help   = "Execute this file after running job",
2711                 .category = FIO_OPT_C_GENERAL,
2712                 .group  = FIO_OPT_G_INVALID,
2713         },
2714 #ifdef FIO_HAVE_IOSCHED_SWITCH
2715         {
2716                 .name   = "ioscheduler",
2717                 .lname  = "I/O scheduler",
2718                 .type   = FIO_OPT_STR_STORE,
2719                 .off1   = td_var_offset(ioscheduler),
2720                 .help   = "Use this IO scheduler on the backing device",
2721                 .category = FIO_OPT_C_FILE,
2722                 .group  = FIO_OPT_G_INVALID,
2723         },
2724 #endif
2725         {
2726                 .name   = "zonesize",
2727                 .lname  = "Zone size",
2728                 .type   = FIO_OPT_STR_VAL,
2729                 .off1   = td_var_offset(zone_size),
2730                 .help   = "Amount of data to read per zone",
2731                 .def    = "0",
2732                 .interval = 1024 * 1024,
2733                 .category = FIO_OPT_C_IO,
2734                 .group  = FIO_OPT_G_ZONE,
2735         },
2736         {
2737                 .name   = "zonerange",
2738                 .lname  = "Zone range",
2739                 .type   = FIO_OPT_STR_VAL,
2740                 .off1   = td_var_offset(zone_range),
2741                 .help   = "Give size of an IO zone",
2742                 .def    = "0",
2743                 .interval = 1024 * 1024,
2744                 .category = FIO_OPT_C_IO,
2745                 .group  = FIO_OPT_G_ZONE,
2746         },
2747         {
2748                 .name   = "zoneskip",
2749                 .lname  = "Zone skip",
2750                 .type   = FIO_OPT_STR_VAL,
2751                 .off1   = td_var_offset(zone_skip),
2752                 .help   = "Space between IO zones",
2753                 .def    = "0",
2754                 .interval = 1024 * 1024,
2755                 .category = FIO_OPT_C_IO,
2756                 .group  = FIO_OPT_G_ZONE,
2757         },
2758         {
2759                 .name   = "lockmem",
2760                 .lname  = "Lock memory",
2761                 .type   = FIO_OPT_STR_VAL,
2762                 .off1   = td_var_offset(lockmem),
2763                 .help   = "Lock down this amount of memory (per worker)",
2764                 .def    = "0",
2765                 .interval = 1024 * 1024,
2766                 .category = FIO_OPT_C_GENERAL,
2767                 .group  = FIO_OPT_G_INVALID,
2768         },
2769         {
2770                 .name   = "rwmixread",
2771                 .lname  = "Read/write mix read",
2772                 .type   = FIO_OPT_INT,
2773                 .cb     = str_rwmix_read_cb,
2774                 .off1   = td_var_offset(rwmix[DDIR_READ]),
2775                 .maxval = 100,
2776                 .help   = "Percentage of mixed workload that is reads",
2777                 .def    = "50",
2778                 .interval = 5,
2779                 .inverse = "rwmixwrite",
2780                 .category = FIO_OPT_C_IO,
2781                 .group  = FIO_OPT_G_RWMIX,
2782         },
2783         {
2784                 .name   = "rwmixwrite",
2785                 .lname  = "Read/write mix write",
2786                 .type   = FIO_OPT_INT,
2787                 .cb     = str_rwmix_write_cb,
2788                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
2789                 .maxval = 100,
2790                 .help   = "Percentage of mixed workload that is writes",
2791                 .def    = "50",
2792                 .interval = 5,
2793                 .inverse = "rwmixread",
2794                 .category = FIO_OPT_C_IO,
2795                 .group  = FIO_OPT_G_RWMIX,
2796         },
2797         {
2798                 .name   = "rwmixcycle",
2799                 .lname  = "Read/write mix cycle",
2800                 .type   = FIO_OPT_DEPRECATED,
2801                 .category = FIO_OPT_C_IO,
2802                 .group  = FIO_OPT_G_RWMIX,
2803         },
2804         {
2805                 .name   = "nice",
2806                 .lname  = "Nice",
2807                 .type   = FIO_OPT_INT,
2808                 .off1   = td_var_offset(nice),
2809                 .help   = "Set job CPU nice value",
2810                 .minval = -19,
2811                 .maxval = 20,
2812                 .def    = "0",
2813                 .interval = 1,
2814                 .category = FIO_OPT_C_GENERAL,
2815                 .group  = FIO_OPT_G_CRED,
2816         },
2817 #ifdef FIO_HAVE_IOPRIO
2818         {
2819                 .name   = "prio",
2820                 .lname  = "I/O nice priority",
2821                 .type   = FIO_OPT_INT,
2822                 .off1   = td_var_offset(ioprio),
2823                 .help   = "Set job IO priority value",
2824                 .minval = 0,
2825                 .maxval = 7,
2826                 .interval = 1,
2827                 .category = FIO_OPT_C_GENERAL,
2828                 .group  = FIO_OPT_G_CRED,
2829         },
2830         {
2831                 .name   = "prioclass",
2832                 .lname  = "I/O nice priority class",
2833                 .type   = FIO_OPT_INT,
2834                 .off1   = td_var_offset(ioprio_class),
2835                 .help   = "Set job IO priority class",
2836                 .minval = 0,
2837                 .maxval = 3,
2838                 .interval = 1,
2839                 .category = FIO_OPT_C_GENERAL,
2840                 .group  = FIO_OPT_G_CRED,
2841         },
2842 #endif
2843         {
2844                 .name   = "thinktime",
2845                 .lname  = "Thinktime",
2846                 .type   = FIO_OPT_INT,
2847                 .off1   = td_var_offset(thinktime),
2848                 .help   = "Idle time between IO buffers (usec)",
2849                 .def    = "0",
2850                 .is_time = 1,
2851                 .category = FIO_OPT_C_IO,
2852                 .group  = FIO_OPT_G_THINKTIME,
2853         },
2854         {
2855                 .name   = "thinktime_spin",
2856                 .lname  = "Thinktime spin",
2857                 .type   = FIO_OPT_INT,
2858                 .off1   = td_var_offset(thinktime_spin),
2859                 .help   = "Start think time by spinning this amount (usec)",
2860                 .def    = "0",
2861                 .is_time = 1,
2862                 .parent = "thinktime",
2863                 .hide   = 1,
2864                 .category = FIO_OPT_C_IO,
2865                 .group  = FIO_OPT_G_THINKTIME,
2866         },
2867         {
2868                 .name   = "thinktime_blocks",
2869                 .lname  = "Thinktime blocks",
2870                 .type   = FIO_OPT_INT,
2871                 .off1   = td_var_offset(thinktime_blocks),
2872                 .help   = "IO buffer period between 'thinktime'",
2873                 .def    = "1",
2874                 .parent = "thinktime",
2875                 .hide   = 1,
2876                 .category = FIO_OPT_C_IO,
2877                 .group  = FIO_OPT_G_THINKTIME,
2878         },
2879         {
2880                 .name   = "rate",
2881                 .lname  = "I/O rate",
2882                 .type   = FIO_OPT_INT,
2883                 .off1   = td_var_offset(rate[DDIR_READ]),
2884                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2885                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2886                 .help   = "Set bandwidth rate",
2887                 .category = FIO_OPT_C_IO,
2888                 .group  = FIO_OPT_G_RATE,
2889         },
2890         {
2891                 .name   = "ratemin",
2892                 .lname  = "I/O min rate",
2893                 .type   = FIO_OPT_INT,
2894                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2895                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2896                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2897                 .help   = "Job must meet this rate or it will be shutdown",
2898                 .parent = "rate",
2899                 .hide   = 1,
2900                 .category = FIO_OPT_C_IO,
2901                 .group  = FIO_OPT_G_RATE,
2902         },
2903         {
2904                 .name   = "rate_iops",
2905                 .lname  = "I/O rate IOPS",
2906                 .type   = FIO_OPT_INT,
2907                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2908                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2909                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2910                 .help   = "Limit IO used to this number of IO operations/sec",
2911                 .hide   = 1,
2912                 .category = FIO_OPT_C_IO,
2913                 .group  = FIO_OPT_G_RATE,
2914         },
2915         {
2916                 .name   = "rate_iops_min",
2917                 .lname  = "I/O min rate IOPS",
2918                 .type   = FIO_OPT_INT,
2919                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2920                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2921                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2922                 .help   = "Job must meet this rate or it will be shut down",
2923                 .parent = "rate_iops",
2924                 .hide   = 1,
2925                 .category = FIO_OPT_C_IO,
2926                 .group  = FIO_OPT_G_RATE,
2927         },
2928         {
2929                 .name   = "ratecycle",
2930                 .lname  = "I/O rate cycle",
2931                 .type   = FIO_OPT_INT,
2932                 .off1   = td_var_offset(ratecycle),
2933                 .help   = "Window average for rate limits (msec)",
2934                 .def    = "1000",
2935                 .parent = "rate",
2936                 .hide   = 1,
2937                 .category = FIO_OPT_C_IO,
2938                 .group  = FIO_OPT_G_RATE,
2939         },
2940         {
2941                 .name   = "max_latency",
2942                 .type   = FIO_OPT_INT,
2943                 .off1   = td_var_offset(max_latency),
2944                 .help   = "Maximum tolerated IO latency (usec)",
2945                 .is_time = 1,
2946                 .category = FIO_OPT_C_IO,
2947                 .group = FIO_OPT_G_LATPROF,
2948         },
2949         {
2950                 .name   = "latency_target",
2951                 .lname  = "Latency Target (usec)",
2952                 .type   = FIO_OPT_STR_VAL_TIME,
2953                 .off1   = td_var_offset(latency_target),
2954                 .help   = "Ramp to max queue depth supporting this latency",
2955                 .is_time = 1,
2956                 .category = FIO_OPT_C_IO,
2957                 .group  = FIO_OPT_G_LATPROF,
2958         },
2959         {
2960                 .name   = "latency_window",
2961                 .lname  = "Latency Window (usec)",
2962                 .type   = FIO_OPT_STR_VAL_TIME,
2963                 .off1   = td_var_offset(latency_window),
2964                 .help   = "Time to sustain latency_target",
2965                 .is_time = 1,
2966                 .category = FIO_OPT_C_IO,
2967                 .group  = FIO_OPT_G_LATPROF,
2968         },
2969         {
2970                 .name   = "latency_percentile",
2971                 .lname  = "Latency Percentile",
2972                 .type   = FIO_OPT_FLOAT_LIST,
2973                 .off1   = td_var_offset(latency_percentile),
2974                 .help   = "Percentile of IOs must be below latency_target",
2975                 .def    = "100",
2976                 .maxlen = 1,
2977                 .minfp  = 0.0,
2978                 .maxfp  = 100.0,
2979                 .category = FIO_OPT_C_IO,
2980                 .group  = FIO_OPT_G_LATPROF,
2981         },
2982         {
2983                 .name   = "invalidate",
2984                 .lname  = "Cache invalidate",
2985                 .type   = FIO_OPT_BOOL,
2986                 .off1   = td_var_offset(invalidate_cache),
2987                 .help   = "Invalidate buffer/page cache prior to running job",
2988                 .def    = "1",
2989                 .category = FIO_OPT_C_IO,
2990                 .group  = FIO_OPT_G_IO_TYPE,
2991         },
2992         {
2993                 .name   = "sync",
2994                 .lname  = "Synchronous I/O",
2995                 .type   = FIO_OPT_BOOL,
2996                 .off1   = td_var_offset(sync_io),
2997                 .help   = "Use O_SYNC for buffered writes",
2998                 .def    = "0",
2999                 .parent = "buffered",
3000                 .hide   = 1,
3001                 .category = FIO_OPT_C_IO,
3002                 .group  = FIO_OPT_G_IO_TYPE,
3003         },
3004         {
3005                 .name   = "create_serialize",
3006                 .lname  = "Create serialize",
3007                 .type   = FIO_OPT_BOOL,
3008                 .off1   = td_var_offset(create_serialize),
3009                 .help   = "Serialize creating of job files",
3010                 .def    = "1",
3011                 .category = FIO_OPT_C_FILE,
3012                 .group  = FIO_OPT_G_INVALID,
3013         },
3014         {
3015                 .name   = "create_fsync",
3016                 .lname  = "Create fsync",
3017                 .type   = FIO_OPT_BOOL,
3018                 .off1   = td_var_offset(create_fsync),
3019                 .help   = "fsync file after creation",
3020                 .def    = "1",
3021                 .category = FIO_OPT_C_FILE,
3022                 .group  = FIO_OPT_G_INVALID,
3023         },
3024         {
3025                 .name   = "create_on_open",
3026                 .lname  = "Create on open",
3027                 .type   = FIO_OPT_BOOL,
3028                 .off1   = td_var_offset(create_on_open),
3029                 .help   = "Create files when they are opened for IO",
3030                 .def    = "0",
3031                 .category = FIO_OPT_C_FILE,
3032                 .group  = FIO_OPT_G_INVALID,
3033         },
3034         {
3035                 .name   = "create_only",
3036                 .type   = FIO_OPT_BOOL,
3037                 .off1   = td_var_offset(create_only),
3038                 .help   = "Only perform file creation phase",
3039                 .category = FIO_OPT_C_FILE,
3040                 .def    = "0",
3041         },
3042         {
3043                 .name   = "allow_file_create",
3044                 .lname  = "Allow file create",
3045                 .type   = FIO_OPT_BOOL,
3046                 .off1   = td_var_offset(allow_create),
3047                 .help   = "Permit fio to create files, if they don't exist",
3048                 .def    = "1",
3049                 .category = FIO_OPT_C_FILE,
3050                 .group  = FIO_OPT_G_FILENAME,
3051         },
3052         {
3053                 .name   = "allow_mounted_write",
3054                 .lname  = "Allow mounted write",
3055                 .type   = FIO_OPT_BOOL,
3056                 .off1   = td_var_offset(allow_mounted_write),
3057                 .help   = "Allow writes to a mounted partition",
3058                 .def    = "0",
3059                 .category = FIO_OPT_C_FILE,
3060                 .group  = FIO_OPT_G_FILENAME,
3061         },
3062         {
3063                 .name   = "pre_read",
3064                 .lname  = "Pre-read files",
3065                 .type   = FIO_OPT_BOOL,
3066                 .off1   = td_var_offset(pre_read),
3067                 .help   = "Pre-read files before starting official testing",
3068                 .def    = "0",
3069                 .category = FIO_OPT_C_FILE,
3070                 .group  = FIO_OPT_G_INVALID,
3071         },
3072 #ifdef FIO_HAVE_CPU_AFFINITY
3073         {
3074                 .name   = "cpumask",
3075                 .lname  = "CPU mask",
3076                 .type   = FIO_OPT_INT,
3077                 .cb     = str_cpumask_cb,
3078                 .off1   = td_var_offset(cpumask),
3079                 .help   = "CPU affinity mask",
3080                 .category = FIO_OPT_C_GENERAL,
3081                 .group  = FIO_OPT_G_CRED,
3082         },
3083         {
3084                 .name   = "cpus_allowed",
3085                 .lname  = "CPUs allowed",
3086                 .type   = FIO_OPT_STR,
3087                 .cb     = str_cpus_allowed_cb,
3088                 .off1   = td_var_offset(cpumask),
3089                 .help   = "Set CPUs allowed",
3090                 .category = FIO_OPT_C_GENERAL,
3091                 .group  = FIO_OPT_G_CRED,
3092         },
3093         {
3094                 .name   = "cpus_allowed_policy",
3095                 .lname  = "CPUs allowed distribution policy",
3096                 .type   = FIO_OPT_STR,
3097                 .off1   = td_var_offset(cpus_allowed_policy),
3098                 .help   = "Distribution policy for cpus_allowed",
3099                 .parent = "cpus_allowed",
3100                 .prio   = 1,
3101                 .posval = {
3102                           { .ival = "shared",
3103                             .oval = FIO_CPUS_SHARED,
3104                             .help = "Mask shared between threads",
3105                           },
3106                           { .ival = "split",
3107                             .oval = FIO_CPUS_SPLIT,
3108                             .help = "Mask split between threads",
3109                           },
3110                 },
3111                 .category = FIO_OPT_C_GENERAL,
3112                 .group  = FIO_OPT_G_CRED,
3113         },
3114 #endif
3115 #ifdef CONFIG_LIBNUMA
3116         {
3117                 .name   = "numa_cpu_nodes",
3118                 .type   = FIO_OPT_STR,
3119                 .cb     = str_numa_cpunodes_cb,
3120                 .off1   = td_var_offset(numa_cpunodes),
3121                 .help   = "NUMA CPU nodes bind",
3122                 .category = FIO_OPT_C_GENERAL,
3123                 .group  = FIO_OPT_G_INVALID,
3124         },
3125         {
3126                 .name   = "numa_mem_policy",
3127                 .type   = FIO_OPT_STR,
3128                 .cb     = str_numa_mpol_cb,
3129                 .off1   = td_var_offset(numa_memnodes),
3130                 .help   = "NUMA memory policy setup",
3131                 .category = FIO_OPT_C_GENERAL,
3132                 .group  = FIO_OPT_G_INVALID,
3133         },
3134 #endif
3135         {
3136                 .name   = "end_fsync",
3137                 .lname  = "End fsync",
3138                 .type   = FIO_OPT_BOOL,
3139                 .off1   = td_var_offset(end_fsync),
3140                 .help   = "Include fsync at the end of job",
3141                 .def    = "0",
3142                 .category = FIO_OPT_C_FILE,
3143                 .group  = FIO_OPT_G_INVALID,
3144         },
3145         {
3146                 .name   = "fsync_on_close",
3147                 .lname  = "Fsync on close",
3148                 .type   = FIO_OPT_BOOL,
3149                 .off1   = td_var_offset(fsync_on_close),
3150                 .help   = "fsync files on close",
3151                 .def    = "0",
3152                 .category = FIO_OPT_C_FILE,
3153                 .group  = FIO_OPT_G_INVALID,
3154         },
3155         {
3156                 .name   = "unlink",
3157                 .lname  = "Unlink file",
3158                 .type   = FIO_OPT_BOOL,
3159                 .off1   = td_var_offset(unlink),
3160                 .help   = "Unlink created files after job has completed",
3161                 .def    = "0",
3162                 .category = FIO_OPT_C_FILE,
3163                 .group  = FIO_OPT_G_INVALID,
3164         },
3165         {
3166                 .name   = "exitall",
3167                 .lname  = "Exit-all on terminate",
3168                 .type   = FIO_OPT_STR_SET,
3169                 .cb     = str_exitall_cb,
3170                 .help   = "Terminate all jobs when one exits",
3171                 .category = FIO_OPT_C_GENERAL,
3172                 .group  = FIO_OPT_G_PROCESS,
3173         },
3174         {
3175                 .name   = "stonewall",
3176                 .lname  = "Wait for previous",
3177                 .alias  = "wait_for_previous",
3178                 .type   = FIO_OPT_STR_SET,
3179                 .off1   = td_var_offset(stonewall),
3180                 .help   = "Insert a hard barrier between this job and previous",
3181                 .category = FIO_OPT_C_GENERAL,
3182                 .group  = FIO_OPT_G_PROCESS,
3183         },
3184         {
3185                 .name   = "new_group",
3186                 .lname  = "New group",
3187                 .type   = FIO_OPT_STR_SET,
3188                 .off1   = td_var_offset(new_group),
3189                 .help   = "Mark the start of a new group (for reporting)",
3190                 .category = FIO_OPT_C_GENERAL,
3191                 .group  = FIO_OPT_G_PROCESS,
3192         },
3193         {
3194                 .name   = "thread",
3195                 .lname  = "Thread",
3196                 .type   = FIO_OPT_STR_SET,
3197                 .off1   = td_var_offset(use_thread),
3198                 .help   = "Use threads instead of processes",
3199 #ifdef CONFIG_NO_SHM
3200                 .def    = "1",
3201                 .no_warn_def = 1,
3202 #endif
3203                 .category = FIO_OPT_C_GENERAL,
3204                 .group  = FIO_OPT_G_PROCESS,
3205         },
3206         {
3207                 .name   = "per_job_logs",
3208                 .type   = FIO_OPT_BOOL,
3209                 .off1   = td_var_offset(per_job_logs),
3210                 .help   = "Include job number in generated log files or not",
3211                 .def    = "1",
3212                 .category = FIO_OPT_C_LOG,
3213                 .group  = FIO_OPT_G_INVALID,
3214         },
3215         {
3216                 .name   = "write_bw_log",
3217                 .lname  = "Write bandwidth log",
3218                 .type   = FIO_OPT_STR_STORE,
3219                 .off1   = td_var_offset(bw_log_file),
3220                 .help   = "Write log of bandwidth during run",
3221                 .category = FIO_OPT_C_LOG,
3222                 .group  = FIO_OPT_G_INVALID,
3223         },
3224         {
3225                 .name   = "write_lat_log",
3226                 .lname  = "Write latency log",
3227                 .type   = FIO_OPT_STR_STORE,
3228                 .off1   = td_var_offset(lat_log_file),
3229                 .help   = "Write log of latency during run",
3230                 .category = FIO_OPT_C_LOG,
3231                 .group  = FIO_OPT_G_INVALID,
3232         },
3233         {
3234                 .name   = "write_iops_log",
3235                 .lname  = "Write IOPS log",
3236                 .type   = FIO_OPT_STR_STORE,
3237                 .off1   = td_var_offset(iops_log_file),
3238                 .help   = "Write log of IOPS during run",
3239                 .category = FIO_OPT_C_LOG,
3240                 .group  = FIO_OPT_G_INVALID,
3241         },
3242         {
3243                 .name   = "log_avg_msec",
3244                 .lname  = "Log averaging (msec)",
3245                 .type   = FIO_OPT_INT,
3246                 .off1   = td_var_offset(log_avg_msec),
3247                 .help   = "Average bw/iops/lat logs over this period of time",
3248                 .def    = "0",
3249                 .category = FIO_OPT_C_LOG,
3250                 .group  = FIO_OPT_G_INVALID,
3251         },
3252         {
3253                 .name   = "log_offset",
3254                 .lname  = "Log offset of IO",
3255                 .type   = FIO_OPT_BOOL,
3256                 .off1   = td_var_offset(log_offset),
3257                 .help   = "Include offset of IO for each log entry",
3258                 .def    = "0",
3259                 .category = FIO_OPT_C_LOG,
3260                 .group  = FIO_OPT_G_INVALID,
3261         },
3262 #ifdef CONFIG_ZLIB
3263         {
3264                 .name   = "log_compression",
3265                 .lname  = "Log compression",
3266                 .type   = FIO_OPT_INT,
3267                 .off1   = td_var_offset(log_gz),
3268                 .help   = "Log in compressed chunks of this size",
3269                 .minval = 32 * 1024 * 1024ULL,
3270                 .maxval = 512 * 1024 * 1024ULL,
3271                 .category = FIO_OPT_C_LOG,
3272                 .group  = FIO_OPT_G_INVALID,
3273         },
3274         {
3275                 .name   = "log_store_compressed",
3276                 .lname  = "Log store compressed",
3277                 .type   = FIO_OPT_BOOL,
3278                 .off1   = td_var_offset(log_gz_store),
3279                 .help   = "Store logs in a compressed format",
3280                 .category = FIO_OPT_C_LOG,
3281                 .group  = FIO_OPT_G_INVALID,
3282         },
3283 #endif
3284         {
3285                 .name   = "block_error_percentiles",
3286                 .lname  = "Block error percentiles",
3287                 .type   = FIO_OPT_BOOL,
3288                 .off1   = td_var_offset(block_error_hist),
3289                 .help   = "Record trim block errors and make a histogram",
3290                 .def    = "0",
3291                 .category = FIO_OPT_C_LOG,
3292                 .group  = FIO_OPT_G_INVALID,
3293         },
3294         {
3295                 .name   = "bwavgtime",
3296                 .lname  = "Bandwidth average time",
3297                 .type   = FIO_OPT_INT,
3298                 .off1   = td_var_offset(bw_avg_time),
3299                 .help   = "Time window over which to calculate bandwidth"
3300                           " (msec)",
3301                 .def    = "500",
3302                 .parent = "write_bw_log",
3303                 .hide   = 1,
3304                 .interval = 100,
3305                 .category = FIO_OPT_C_LOG,
3306                 .group  = FIO_OPT_G_INVALID,
3307         },
3308         {
3309                 .name   = "iopsavgtime",
3310                 .lname  = "IOPS average time",
3311                 .type   = FIO_OPT_INT,
3312                 .off1   = td_var_offset(iops_avg_time),
3313                 .help   = "Time window over which to calculate IOPS (msec)",
3314                 .def    = "500",
3315                 .parent = "write_iops_log",
3316                 .hide   = 1,
3317                 .interval = 100,
3318                 .category = FIO_OPT_C_LOG,
3319                 .group  = FIO_OPT_G_INVALID,
3320         },
3321         {
3322                 .name   = "group_reporting",
3323                 .lname  = "Group reporting",
3324                 .type   = FIO_OPT_STR_SET,
3325                 .off1   = td_var_offset(group_reporting),
3326                 .help   = "Do reporting on a per-group basis",
3327                 .category = FIO_OPT_C_STAT,
3328                 .group  = FIO_OPT_G_INVALID,
3329         },
3330         {
3331                 .name   = "zero_buffers",
3332                 .lname  = "Zero I/O buffers",
3333                 .type   = FIO_OPT_STR_SET,
3334                 .off1   = td_var_offset(zero_buffers),
3335                 .help   = "Init IO buffers to all zeroes",
3336                 .category = FIO_OPT_C_IO,
3337                 .group  = FIO_OPT_G_IO_BUF,
3338         },
3339         {
3340                 .name   = "refill_buffers",
3341                 .lname  = "Refill I/O buffers",
3342                 .type   = FIO_OPT_STR_SET,
3343                 .off1   = td_var_offset(refill_buffers),
3344                 .help   = "Refill IO buffers on every IO submit",
3345                 .category = FIO_OPT_C_IO,
3346                 .group  = FIO_OPT_G_IO_BUF,
3347         },
3348         {
3349                 .name   = "scramble_buffers",
3350                 .lname  = "Scramble I/O buffers",
3351                 .type   = FIO_OPT_BOOL,
3352                 .off1   = td_var_offset(scramble_buffers),
3353                 .help   = "Slightly scramble buffers on every IO submit",
3354                 .def    = "1",
3355                 .category = FIO_OPT_C_IO,
3356                 .group  = FIO_OPT_G_IO_BUF,
3357         },
3358         {
3359                 .name   = "buffer_pattern",
3360                 .lname  = "Buffer pattern",
3361                 .type   = FIO_OPT_STR,
3362                 .cb     = str_buffer_pattern_cb,
3363                 .off1   = td_var_offset(buffer_pattern),
3364                 .help   = "Fill pattern for IO buffers",
3365                 .category = FIO_OPT_C_IO,
3366                 .group  = FIO_OPT_G_IO_BUF,
3367         },
3368         {
3369                 .name   = "buffer_compress_percentage",
3370                 .lname  = "Buffer compression percentage",
3371                 .type   = FIO_OPT_INT,
3372                 .cb     = str_buffer_compress_cb,
3373                 .off1   = td_var_offset(compress_percentage),
3374                 .maxval = 100,
3375                 .minval = 0,
3376                 .help   = "How compressible the buffer is (approximately)",
3377                 .interval = 5,
3378                 .category = FIO_OPT_C_IO,
3379                 .group  = FIO_OPT_G_IO_BUF,
3380         },
3381         {
3382                 .name   = "buffer_compress_chunk",
3383                 .lname  = "Buffer compression chunk size",
3384                 .type   = FIO_OPT_INT,
3385                 .off1   = td_var_offset(compress_chunk),
3386                 .parent = "buffer_compress_percentage",
3387                 .hide   = 1,
3388                 .help   = "Size of compressible region in buffer",
3389                 .interval = 256,
3390                 .category = FIO_OPT_C_IO,
3391                 .group  = FIO_OPT_G_IO_BUF,
3392         },
3393         {
3394                 .name   = "dedupe_percentage",
3395                 .lname  = "Dedupe percentage",
3396                 .type   = FIO_OPT_INT,
3397                 .cb     = str_dedupe_cb,
3398                 .off1   = td_var_offset(dedupe_percentage),
3399                 .maxval = 100,
3400                 .minval = 0,
3401                 .help   = "Percentage of buffers that are dedupable",
3402                 .interval = 1,
3403                 .category = FIO_OPT_C_IO,
3404                 .group  = FIO_OPT_G_IO_BUF,
3405         },
3406         {
3407                 .name   = "clat_percentiles",
3408                 .lname  = "Completion latency percentiles",
3409                 .type   = FIO_OPT_BOOL,
3410                 .off1   = td_var_offset(clat_percentiles),
3411                 .help   = "Enable the reporting of completion latency percentiles",
3412                 .def    = "1",
3413                 .category = FIO_OPT_C_STAT,
3414                 .group  = FIO_OPT_G_INVALID,
3415         },
3416         {
3417                 .name   = "percentile_list",
3418                 .lname  = "Percentile list",
3419                 .type   = FIO_OPT_FLOAT_LIST,
3420                 .off1   = td_var_offset(percentile_list),
3421                 .off2   = td_var_offset(percentile_precision),
3422                 .help   = "Specify a custom list of percentiles to report for "
3423                           "completion latency and block errors",
3424                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3425                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3426                 .minfp  = 0.0,
3427                 .maxfp  = 100.0,
3428                 .category = FIO_OPT_C_STAT,
3429                 .group  = FIO_OPT_G_INVALID,
3430         },
3431
3432 #ifdef FIO_HAVE_DISK_UTIL
3433         {
3434                 .name   = "disk_util",
3435                 .lname  = "Disk utilization",
3436                 .type   = FIO_OPT_BOOL,
3437                 .off1   = td_var_offset(do_disk_util),
3438                 .help   = "Log disk utilization statistics",
3439                 .def    = "1",
3440                 .category = FIO_OPT_C_STAT,
3441                 .group  = FIO_OPT_G_INVALID,
3442         },
3443 #endif
3444         {
3445                 .name   = "gtod_reduce",
3446                 .lname  = "Reduce gettimeofday() calls",
3447                 .type   = FIO_OPT_BOOL,
3448                 .help   = "Greatly reduce number of gettimeofday() calls",
3449                 .cb     = str_gtod_reduce_cb,
3450                 .def    = "0",
3451                 .hide_on_set = 1,
3452                 .category = FIO_OPT_C_STAT,
3453                 .group  = FIO_OPT_G_INVALID,
3454         },
3455         {
3456                 .name   = "disable_lat",
3457                 .lname  = "Disable all latency stats",
3458                 .type   = FIO_OPT_BOOL,
3459                 .off1   = td_var_offset(disable_lat),
3460                 .help   = "Disable latency numbers",
3461                 .parent = "gtod_reduce",
3462                 .hide   = 1,
3463                 .def    = "0",
3464                 .category = FIO_OPT_C_STAT,
3465                 .group  = FIO_OPT_G_INVALID,
3466         },
3467         {
3468                 .name   = "disable_clat",
3469                 .lname  = "Disable completion latency stats",
3470                 .type   = FIO_OPT_BOOL,
3471                 .off1   = td_var_offset(disable_clat),
3472                 .help   = "Disable completion latency numbers",
3473                 .parent = "gtod_reduce",
3474                 .hide   = 1,
3475                 .def    = "0",
3476                 .category = FIO_OPT_C_STAT,
3477                 .group  = FIO_OPT_G_INVALID,
3478         },
3479         {
3480                 .name   = "disable_slat",
3481                 .lname  = "Disable submission latency stats",
3482                 .type   = FIO_OPT_BOOL,
3483                 .off1   = td_var_offset(disable_slat),
3484                 .help   = "Disable submission latency numbers",
3485                 .parent = "gtod_reduce",
3486                 .hide   = 1,
3487                 .def    = "0",
3488                 .category = FIO_OPT_C_STAT,
3489                 .group  = FIO_OPT_G_INVALID,
3490         },
3491         {
3492                 .name   = "disable_bw_measurement",
3493                 .lname  = "Disable bandwidth stats",
3494                 .type   = FIO_OPT_BOOL,
3495                 .off1   = td_var_offset(disable_bw),
3496                 .help   = "Disable bandwidth logging",
3497                 .parent = "gtod_reduce",
3498                 .hide   = 1,
3499                 .def    = "0",
3500                 .category = FIO_OPT_C_STAT,
3501                 .group  = FIO_OPT_G_INVALID,
3502         },
3503         {
3504                 .name   = "gtod_cpu",
3505                 .lname  = "Dedicated gettimeofday() CPU",
3506                 .type   = FIO_OPT_INT,
3507                 .off1   = td_var_offset(gtod_cpu),
3508                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3509                 .verify = gtod_cpu_verify,
3510                 .category = FIO_OPT_C_GENERAL,
3511                 .group  = FIO_OPT_G_CLOCK,
3512         },
3513         {
3514                 .name   = "unified_rw_reporting",
3515                 .type   = FIO_OPT_BOOL,
3516                 .off1   = td_var_offset(unified_rw_rep),
3517                 .help   = "Unify reporting across data direction",
3518                 .def    = "0",
3519                 .category = FIO_OPT_C_GENERAL,
3520                 .group  = FIO_OPT_G_INVALID,
3521         },
3522         {
3523                 .name   = "continue_on_error",
3524                 .lname  = "Continue on error",
3525                 .type   = FIO_OPT_STR,
3526                 .off1   = td_var_offset(continue_on_error),
3527                 .help   = "Continue on non-fatal errors during IO",
3528                 .def    = "none",
3529                 .category = FIO_OPT_C_GENERAL,
3530                 .group  = FIO_OPT_G_ERR,
3531                 .posval = {
3532                           { .ival = "none",
3533                             .oval = ERROR_TYPE_NONE,
3534                             .help = "Exit when an error is encountered",
3535                           },
3536                           { .ival = "read",
3537                             .oval = ERROR_TYPE_READ,
3538                             .help = "Continue on read errors only",
3539                           },
3540                           { .ival = "write",
3541                             .oval = ERROR_TYPE_WRITE,
3542                             .help = "Continue on write errors only",
3543                           },
3544                           { .ival = "io",
3545                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3546                             .help = "Continue on any IO errors",
3547                           },
3548                           { .ival = "verify",
3549                             .oval = ERROR_TYPE_VERIFY,
3550                             .help = "Continue on verify errors only",
3551                           },
3552                           { .ival = "all",
3553                             .oval = ERROR_TYPE_ANY,
3554                             .help = "Continue on all io and verify errors",
3555                           },
3556                           { .ival = "0",
3557                             .oval = ERROR_TYPE_NONE,
3558                             .help = "Alias for 'none'",
3559                           },
3560                           { .ival = "1",
3561                             .oval = ERROR_TYPE_ANY,
3562                             .help = "Alias for 'all'",
3563                           },
3564                 },
3565         },
3566         {
3567                 .name   = "ignore_error",
3568                 .type   = FIO_OPT_STR,
3569                 .cb     = str_ignore_error_cb,
3570                 .off1   = td_var_offset(ignore_error_nr),
3571                 .help   = "Set a specific list of errors to ignore",
3572                 .parent = "rw",
3573                 .category = FIO_OPT_C_GENERAL,
3574                 .group  = FIO_OPT_G_ERR,
3575         },
3576         {
3577                 .name   = "error_dump",
3578                 .type   = FIO_OPT_BOOL,
3579                 .off1   = td_var_offset(error_dump),
3580                 .def    = "0",
3581                 .help   = "Dump info on each error",
3582                 .category = FIO_OPT_C_GENERAL,
3583                 .group  = FIO_OPT_G_ERR,
3584         },
3585         {
3586                 .name   = "profile",
3587                 .lname  = "Profile",
3588                 .type   = FIO_OPT_STR_STORE,
3589                 .off1   = td_var_offset(profile),
3590                 .help   = "Select a specific builtin performance test",
3591                 .category = FIO_OPT_C_PROFILE,
3592                 .group  = FIO_OPT_G_INVALID,
3593         },
3594         {
3595                 .name   = "cgroup",
3596                 .lname  = "Cgroup",
3597                 .type   = FIO_OPT_STR_STORE,
3598                 .off1   = td_var_offset(cgroup),
3599                 .help   = "Add job to cgroup of this name",
3600                 .category = FIO_OPT_C_GENERAL,
3601                 .group  = FIO_OPT_G_CGROUP,
3602         },
3603         {
3604                 .name   = "cgroup_nodelete",
3605                 .lname  = "Cgroup no-delete",
3606                 .type   = FIO_OPT_BOOL,
3607                 .off1   = td_var_offset(cgroup_nodelete),
3608                 .help   = "Do not delete cgroups after job completion",
3609                 .def    = "0",
3610                 .parent = "cgroup",
3611                 .category = FIO_OPT_C_GENERAL,
3612                 .group  = FIO_OPT_G_CGROUP,
3613         },
3614         {
3615                 .name   = "cgroup_weight",
3616                 .lname  = "Cgroup weight",
3617                 .type   = FIO_OPT_INT,
3618                 .off1   = td_var_offset(cgroup_weight),
3619                 .help   = "Use given weight for cgroup",
3620                 .minval = 100,
3621                 .maxval = 1000,
3622                 .parent = "cgroup",
3623                 .category = FIO_OPT_C_GENERAL,
3624                 .group  = FIO_OPT_G_CGROUP,
3625         },
3626         {
3627                 .name   = "uid",
3628                 .lname  = "User ID",
3629                 .type   = FIO_OPT_INT,
3630                 .off1   = td_var_offset(uid),
3631                 .help   = "Run job with this user ID",
3632                 .category = FIO_OPT_C_GENERAL,
3633                 .group  = FIO_OPT_G_CRED,
3634         },
3635         {
3636                 .name   = "gid",
3637                 .lname  = "Group ID",
3638                 .type   = FIO_OPT_INT,
3639                 .off1   = td_var_offset(gid),
3640                 .help   = "Run job with this group ID",
3641                 .category = FIO_OPT_C_GENERAL,
3642                 .group  = FIO_OPT_G_CRED,
3643         },
3644         {
3645                 .name   = "kb_base",
3646                 .lname  = "KB Base",
3647                 .type   = FIO_OPT_INT,
3648                 .off1   = td_var_offset(kb_base),
3649                 .prio   = 1,
3650                 .def    = "1024",
3651                 .posval = {
3652                           { .ival = "1024",
3653                             .oval = 1024,
3654                             .help = "Use 1024 as the K base",
3655                           },
3656                           { .ival = "1000",
3657                             .oval = 1000,
3658                             .help = "Use 1000 as the K base",
3659                           },
3660                 },
3661                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3662                 .category = FIO_OPT_C_GENERAL,
3663                 .group  = FIO_OPT_G_INVALID,
3664         },
3665         {
3666                 .name   = "unit_base",
3667                 .lname  = "Base unit for reporting (Bits or Bytes)",
3668                 .type   = FIO_OPT_INT,
3669                 .off1   = td_var_offset(unit_base),
3670                 .prio   = 1,
3671                 .posval = {
3672                           { .ival = "0",
3673                             .oval = 0,
3674                             .help = "Auto-detect",
3675                           },
3676                           { .ival = "8",
3677                             .oval = 8,
3678                             .help = "Normal (byte based)",
3679                           },
3680                           { .ival = "1",
3681                             .oval = 1,
3682                             .help = "Bit based",
3683                           },
3684                 },
3685                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3686                 .category = FIO_OPT_C_GENERAL,
3687                 .group  = FIO_OPT_G_INVALID,
3688         },
3689         {
3690                 .name   = "hugepage-size",
3691                 .lname  = "Hugepage size",
3692                 .type   = FIO_OPT_INT,
3693                 .off1   = td_var_offset(hugepage_size),
3694                 .help   = "When using hugepages, specify size of each page",
3695                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3696                 .interval = 1024 * 1024,
3697                 .category = FIO_OPT_C_GENERAL,
3698                 .group  = FIO_OPT_G_INVALID,
3699         },
3700         {
3701                 .name   = "flow_id",
3702                 .lname  = "I/O flow ID",
3703                 .type   = FIO_OPT_INT,
3704                 .off1   = td_var_offset(flow_id),
3705                 .help   = "The flow index ID to use",
3706                 .def    = "0",
3707                 .category = FIO_OPT_C_IO,
3708                 .group  = FIO_OPT_G_IO_FLOW,
3709         },
3710         {
3711                 .name   = "flow",
3712                 .lname  = "I/O flow weight",
3713                 .type   = FIO_OPT_INT,
3714                 .off1   = td_var_offset(flow),
3715                 .help   = "Weight for flow control of this job",
3716                 .parent = "flow_id",
3717                 .hide   = 1,
3718                 .def    = "0",
3719                 .category = FIO_OPT_C_IO,
3720                 .group  = FIO_OPT_G_IO_FLOW,
3721         },
3722         {
3723                 .name   = "flow_watermark",
3724                 .lname  = "I/O flow watermark",
3725                 .type   = FIO_OPT_INT,
3726                 .off1   = td_var_offset(flow_watermark),
3727                 .help   = "High watermark for flow control. This option"
3728                         " should be set to the same value for all threads"
3729                         " with non-zero flow.",
3730                 .parent = "flow_id",
3731                 .hide   = 1,
3732                 .def    = "1024",
3733                 .category = FIO_OPT_C_IO,
3734                 .group  = FIO_OPT_G_IO_FLOW,
3735         },
3736         {
3737                 .name   = "flow_sleep",
3738                 .lname  = "I/O flow sleep",
3739                 .type   = FIO_OPT_INT,
3740                 .off1   = td_var_offset(flow_sleep),
3741                 .help   = "How many microseconds to sleep after being held"
3742                         " back by the flow control mechanism",
3743                 .parent = "flow_id",
3744                 .hide   = 1,
3745                 .def    = "0",
3746                 .category = FIO_OPT_C_IO,
3747                 .group  = FIO_OPT_G_IO_FLOW,
3748         },
3749         {
3750                 .name   = "skip_bad",
3751                 .lname  = "Skip operations against bad blocks",
3752                 .type   = FIO_OPT_BOOL,
3753                 .off1   = td_var_offset(skip_bad),
3754                 .help   = "Skip operations against known bad blocks.",
3755                 .hide   = 1,
3756                 .def    = "0",
3757                 .category = FIO_OPT_C_IO,
3758                 .group  = FIO_OPT_G_MTD,
3759         },
3760         {
3761                 .name = NULL,
3762         },
3763 };
3764
3765 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3766                         const char *name, int val)
3767 {
3768         lopt->name = (char *) name;
3769         lopt->val = val;
3770         if (o->type == FIO_OPT_STR_SET)
3771                 lopt->has_arg = optional_argument;
3772         else
3773                 lopt->has_arg = required_argument;
3774 }
3775
3776 static void options_to_lopts(struct fio_option *opts,
3777                               struct option *long_options,
3778                               int i, int option_type)
3779 {
3780         struct fio_option *o = &opts[0];
3781         while (o->name) {
3782                 add_to_lopt(&long_options[i], o, o->name, option_type);
3783                 if (o->alias) {
3784                         i++;
3785                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3786                 }
3787
3788                 i++;
3789                 o++;
3790                 assert(i < FIO_NR_OPTIONS);
3791         }
3792 }
3793
3794 void fio_options_set_ioengine_opts(struct option *long_options,
3795                                    struct thread_data *td)
3796 {
3797         unsigned int i;
3798
3799         i = 0;
3800         while (long_options[i].name) {
3801                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3802                         memset(&long_options[i], 0, sizeof(*long_options));
3803                         break;
3804                 }
3805                 i++;
3806         }
3807
3808         /*
3809          * Just clear out the prior ioengine options.
3810          */
3811         if (!td || !td->eo)
3812                 return;
3813
3814         options_to_lopts(td->io_ops->options, long_options, i,
3815                          FIO_GETOPT_IOENGINE);
3816 }
3817
3818 void fio_options_dup_and_init(struct option *long_options)
3819 {
3820         unsigned int i;
3821
3822         options_init(fio_options);
3823
3824         i = 0;
3825         while (long_options[i].name)
3826                 i++;
3827
3828         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3829 }
3830
3831 struct fio_keyword {
3832         const char *word;
3833         const char *desc;
3834         char *replace;
3835 };
3836
3837 static struct fio_keyword fio_keywords[] = {
3838         {
3839                 .word   = "$pagesize",
3840                 .desc   = "Page size in the system",
3841         },
3842         {
3843                 .word   = "$mb_memory",
3844                 .desc   = "Megabytes of memory online",
3845         },
3846         {
3847                 .word   = "$ncpus",
3848                 .desc   = "Number of CPUs online in the system",
3849         },
3850         {
3851                 .word   = NULL,
3852         },
3853 };
3854
3855 void fio_keywords_exit(void)
3856 {
3857         struct fio_keyword *kw;
3858
3859         kw = &fio_keywords[0];
3860         while (kw->word) {
3861                 free(kw->replace);
3862                 kw->replace = NULL;
3863                 kw++;
3864         }
3865 }
3866
3867 void fio_keywords_init(void)
3868 {
3869         unsigned long long mb_memory;
3870         char buf[128];
3871         long l;
3872
3873         sprintf(buf, "%lu", (unsigned long) page_size);
3874         fio_keywords[0].replace = strdup(buf);
3875
3876         mb_memory = os_phys_mem() / (1024 * 1024);
3877         sprintf(buf, "%llu", mb_memory);
3878         fio_keywords[1].replace = strdup(buf);
3879
3880         l = cpus_online();
3881         sprintf(buf, "%lu", l);
3882         fio_keywords[2].replace = strdup(buf);
3883 }
3884
3885 #define BC_APP          "bc"
3886
3887 static char *bc_calc(char *str)
3888 {
3889         char buf[128], *tmp;
3890         FILE *f;
3891         int ret;
3892
3893         /*
3894          * No math, just return string
3895          */
3896         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3897              !strchr(str, '/')) || strchr(str, '\''))
3898                 return str;
3899
3900         /*
3901          * Split option from value, we only need to calculate the value
3902          */
3903         tmp = strchr(str, '=');
3904         if (!tmp)
3905                 return str;
3906
3907         tmp++;
3908
3909         /*
3910          * Prevent buffer overflows; such a case isn't reasonable anyway
3911          */
3912         if (strlen(str) >= 128 || strlen(tmp) > 100)
3913                 return str;
3914
3915         sprintf(buf, "which %s > /dev/null", BC_APP);
3916         if (system(buf)) {
3917                 log_err("fio: bc is needed for performing math\n");
3918                 return NULL;
3919         }
3920
3921         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
3922         f = popen(buf, "r");
3923         if (!f)
3924                 return NULL;
3925
3926         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
3927         if (ret <= 0) {
3928                 pclose(f);
3929                 return NULL;
3930         }
3931
3932         pclose(f);
3933         buf[(tmp - str) + ret - 1] = '\0';
3934         memcpy(buf, str, tmp - str);
3935         free(str);
3936         return strdup(buf);
3937 }
3938
3939 /*
3940  * Return a copy of the input string with substrings of the form ${VARNAME}
3941  * substituted with the value of the environment variable VARNAME.  The
3942  * substitution always occurs, even if VARNAME is empty or the corresponding
3943  * environment variable undefined.
3944  */
3945 static char *option_dup_subs(const char *opt)
3946 {
3947         char out[OPT_LEN_MAX+1];
3948         char in[OPT_LEN_MAX+1];
3949         char *outptr = out;
3950         char *inptr = in;
3951         char *ch1, *ch2, *env;
3952         ssize_t nchr = OPT_LEN_MAX;
3953         size_t envlen;
3954
3955         if (strlen(opt) + 1 > OPT_LEN_MAX) {
3956                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
3957                 return NULL;
3958         }
3959
3960         in[OPT_LEN_MAX] = '\0';
3961         strncpy(in, opt, OPT_LEN_MAX);
3962
3963         while (*inptr && nchr > 0) {
3964                 if (inptr[0] == '$' && inptr[1] == '{') {
3965                         ch2 = strchr(inptr, '}');
3966                         if (ch2 && inptr+1 < ch2) {
3967                                 ch1 = inptr+2;
3968                                 inptr = ch2+1;
3969                                 *ch2 = '\0';
3970
3971                                 env = getenv(ch1);
3972                                 if (env) {
3973                                         envlen = strlen(env);
3974                                         if (envlen <= nchr) {
3975                                                 memcpy(outptr, env, envlen);
3976                                                 outptr += envlen;
3977                                                 nchr -= envlen;
3978                                         }
3979                                 }
3980
3981                                 continue;
3982                         }
3983                 }
3984
3985                 *outptr++ = *inptr++;
3986                 --nchr;
3987         }
3988
3989         *outptr = '\0';
3990         return strdup(out);
3991 }
3992
3993 /*
3994  * Look for reserved variable names and replace them with real values
3995  */
3996 static char *fio_keyword_replace(char *opt)
3997 {
3998         char *s;
3999         int i;
4000         int docalc = 0;
4001
4002         for (i = 0; fio_keywords[i].word != NULL; i++) {
4003                 struct fio_keyword *kw = &fio_keywords[i];
4004
4005                 while ((s = strstr(opt, kw->word)) != NULL) {
4006                         char *new = malloc(strlen(opt) + 1);
4007                         char *o_org = opt;
4008                         int olen = s - opt;
4009                         int len;
4010
4011                         /*
4012                          * Copy part of the string before the keyword and
4013                          * sprintf() the replacement after it.
4014                          */
4015                         memcpy(new, opt, olen);
4016                         len = sprintf(new + olen, "%s", kw->replace);
4017
4018                         /*
4019                          * If there's more in the original string, copy that
4020                          * in too
4021                          */
4022                         opt += strlen(kw->word) + olen;
4023                         if (strlen(opt))
4024                                 memcpy(new + olen + len, opt, opt - o_org - 1);
4025
4026                         /*
4027                          * replace opt and free the old opt
4028                          */
4029                         opt = new;
4030                         free(o_org);
4031
4032                         docalc = 1;
4033                 }
4034         }
4035
4036         /*
4037          * Check for potential math and invoke bc, if possible
4038          */
4039         if (docalc)
4040                 opt = bc_calc(opt);
4041
4042         return opt;
4043 }
4044
4045 static char **dup_and_sub_options(char **opts, int num_opts)
4046 {
4047         int i;
4048         char **opts_copy = malloc(num_opts * sizeof(*opts));
4049         for (i = 0; i < num_opts; i++) {
4050                 opts_copy[i] = option_dup_subs(opts[i]);
4051                 if (!opts_copy[i])
4052                         continue;
4053                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
4054         }
4055         return opts_copy;
4056 }
4057
4058 static void show_closest_option(const char *opt)
4059 {
4060         int best_option, best_distance;
4061         int i, distance;
4062         char *name;
4063
4064         if (!strlen(opt))
4065                 return;
4066
4067         name = strdup(opt);
4068         i = 0;
4069         while (name[i] != '\0' && name[i] != '=')
4070                 i++;
4071         name[i] = '\0';
4072
4073         best_option = -1;
4074         best_distance = INT_MAX;
4075         i = 0;
4076         while (fio_options[i].name) {
4077                 distance = string_distance(name, fio_options[i].name);
4078                 if (distance < best_distance) {
4079                         best_distance = distance;
4080                         best_option = i;
4081                 }
4082                 i++;
4083         }
4084
4085         if (best_option != -1)
4086                 log_err("Did you mean %s?\n", fio_options[best_option].name);
4087
4088         free(name);
4089 }
4090
4091 int fio_options_parse(struct thread_data *td, char **opts, int num_opts,
4092                         int dump_cmdline)
4093 {
4094         int i, ret, unknown;
4095         char **opts_copy;
4096
4097         sort_options(opts, fio_options, num_opts);
4098         opts_copy = dup_and_sub_options(opts, num_opts);
4099
4100         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
4101                 struct fio_option *o;
4102                 int newret = parse_option(opts_copy[i], opts[i], fio_options,
4103                                                 &o, td, dump_cmdline);
4104
4105                 if (!newret && o)
4106                         fio_option_mark_set(&td->o, o);
4107
4108                 if (opts_copy[i]) {
4109                         if (newret && !o) {
4110                                 unknown++;
4111                                 continue;
4112                         }
4113                         free(opts_copy[i]);
4114                         opts_copy[i] = NULL;
4115                 }
4116
4117                 ret |= newret;
4118         }
4119
4120         if (unknown) {
4121                 ret |= ioengine_load(td);
4122                 if (td->eo) {
4123                         sort_options(opts_copy, td->io_ops->options, num_opts);
4124                         opts = opts_copy;
4125                 }
4126                 for (i = 0; i < num_opts; i++) {
4127                         struct fio_option *o = NULL;
4128                         int newret = 1;
4129
4130                         if (!opts_copy[i])
4131                                 continue;
4132
4133                         if (td->eo)
4134                                 newret = parse_option(opts_copy[i], opts[i],
4135                                                       td->io_ops->options, &o,
4136                                                       td->eo, dump_cmdline);
4137
4138                         ret |= newret;
4139                         if (!o) {
4140                                 log_err("Bad option <%s>\n", opts[i]);
4141                                 show_closest_option(opts[i]);
4142                         }
4143                         free(opts_copy[i]);
4144                         opts_copy[i] = NULL;
4145                 }
4146         }
4147
4148         free(opts_copy);
4149         return ret;
4150 }
4151
4152 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
4153 {
4154         int ret;
4155
4156         ret = parse_cmd_option(opt, val, fio_options, td);
4157         if (!ret) {
4158                 struct fio_option *o;
4159
4160                 o = find_option(fio_options, opt);
4161                 if (o)
4162                         fio_option_mark_set(&td->o, o);
4163         }
4164
4165         return ret;
4166 }
4167
4168 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
4169                                 char *val)
4170 {
4171         return parse_cmd_option(opt, val, td->io_ops->options, td->eo);
4172 }
4173
4174 void fio_fill_default_options(struct thread_data *td)
4175 {
4176         td->o.magic = OPT_MAGIC;
4177         fill_default_options(td, fio_options);
4178 }
4179
4180 int fio_show_option_help(const char *opt)
4181 {
4182         return show_cmd_help(fio_options, opt);
4183 }
4184
4185 void options_mem_dupe(void *data, struct fio_option *options)
4186 {
4187         struct fio_option *o;
4188         char **ptr;
4189
4190         for (o = &options[0]; o->name; o++) {
4191                 if (o->type != FIO_OPT_STR_STORE)
4192                         continue;
4193
4194                 ptr = td_var(data, o, o->off1);
4195                 if (*ptr)
4196                         *ptr = strdup(*ptr);
4197         }
4198 }
4199
4200 /*
4201  * dupe FIO_OPT_STR_STORE options
4202  */
4203 void fio_options_mem_dupe(struct thread_data *td)
4204 {
4205         options_mem_dupe(&td->o, fio_options);
4206
4207         if (td->eo && td->io_ops) {
4208                 void *oldeo = td->eo;
4209
4210                 td->eo = malloc(td->io_ops->option_struct_size);
4211                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
4212                 options_mem_dupe(td->eo, td->io_ops->options);
4213         }
4214 }
4215
4216 unsigned int fio_get_kb_base(void *data)
4217 {
4218         struct thread_options *o = data;
4219         unsigned int kb_base = 0;
4220
4221         /*
4222          * This is a hack... For private options, *data is not holding
4223          * a pointer to the thread_options, but to private data. This means
4224          * we can't safely dereference it, but magic is first so mem wise
4225          * it is valid. But this also means that if the job first sets
4226          * kb_base and expects that to be honored by private options,
4227          * it will be disappointed. We will return the global default
4228          * for this.
4229          */
4230         if (o && o->magic == OPT_MAGIC)
4231                 kb_base = o->kb_base;
4232         if (!kb_base)
4233                 kb_base = 1024;
4234
4235         return kb_base;
4236 }
4237
4238 int add_option(struct fio_option *o)
4239 {
4240         struct fio_option *__o;
4241         int opt_index = 0;
4242
4243         __o = fio_options;
4244         while (__o->name) {
4245                 opt_index++;
4246                 __o++;
4247         }
4248
4249         if (opt_index + 1 == FIO_MAX_OPTS) {
4250                 log_err("fio: FIO_MAX_OPTS is too small\n");
4251                 return 1;
4252         }
4253
4254         memcpy(&fio_options[opt_index], o, sizeof(*o));
4255         fio_options[opt_index + 1].name = NULL;
4256         return 0;
4257 }
4258
4259 void invalidate_profile_options(const char *prof_name)
4260 {
4261         struct fio_option *o;
4262
4263         o = fio_options;
4264         while (o->name) {
4265                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
4266                         o->type = FIO_OPT_INVALID;
4267                         o->prof_name = NULL;
4268                 }
4269                 o++;
4270         }
4271 }
4272
4273 void add_opt_posval(const char *optname, const char *ival, const char *help)
4274 {
4275         struct fio_option *o;
4276         unsigned int i;
4277
4278         o = find_option(fio_options, optname);
4279         if (!o)
4280                 return;
4281
4282         for (i = 0; i < PARSE_MAX_VP; i++) {
4283                 if (o->posval[i].ival)
4284                         continue;
4285
4286                 o->posval[i].ival = ival;
4287                 o->posval[i].help = help;
4288                 break;
4289         }
4290 }
4291
4292 void del_opt_posval(const char *optname, const char *ival)
4293 {
4294         struct fio_option *o;
4295         unsigned int i;
4296
4297         o = find_option(fio_options, optname);
4298         if (!o)
4299                 return;
4300
4301         for (i = 0; i < PARSE_MAX_VP; i++) {
4302                 if (!o->posval[i].ival)
4303                         continue;
4304                 if (strcmp(o->posval[i].ival, ival))
4305                         continue;
4306
4307                 o->posval[i].ival = NULL;
4308                 o->posval[i].help = NULL;
4309         }
4310 }
4311
4312 void fio_options_free(struct thread_data *td)
4313 {
4314         options_free(fio_options, td);
4315         if (td->eo && td->io_ops && td->io_ops->options) {
4316                 options_free(td->io_ops->options, td->eo);
4317                 free(td->eo);
4318                 td->eo = NULL;
4319         }
4320 }
4321
4322 struct fio_option *fio_option_find(const char *name)
4323 {
4324         return find_option(fio_options, name);
4325 }
4326
4327 static struct fio_option *find_next_opt(struct thread_options *o,
4328                                         struct fio_option *from,
4329                                         unsigned int off1)
4330 {
4331         struct fio_option *opt;
4332
4333         if (!from)
4334                 from = &fio_options[0];
4335         else
4336                 from++;
4337
4338         opt = NULL;
4339         do {
4340                 if (off1 == from->off1) {
4341                         opt = from;
4342                         break;
4343                 }
4344                 from++;
4345         } while (from->name);
4346
4347         return opt;
4348 }
4349
4350 static int opt_is_set(struct thread_options *o, struct fio_option *opt)
4351 {
4352         unsigned int opt_off, index, offset;
4353
4354         opt_off = opt - &fio_options[0];
4355         index = opt_off / (8 * sizeof(uint64_t));
4356         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4357         return (o->set_options[index] & (1UL << offset)) != 0;
4358 }
4359
4360 int __fio_option_is_set(struct thread_options *o, unsigned int off1)
4361 {
4362         struct fio_option *opt, *next;
4363
4364         next = NULL;
4365         while ((opt = find_next_opt(o, next, off1)) != NULL) {
4366                 if (opt_is_set(o, opt))
4367                         return 1;
4368
4369                 next = opt;
4370         }
4371
4372         return 0;
4373 }
4374
4375 void fio_option_mark_set(struct thread_options *o, struct fio_option *opt)
4376 {
4377         unsigned int opt_off, index, offset;
4378
4379         opt_off = opt - &fio_options[0];
4380         index = opt_off / (8 * sizeof(uint64_t));
4381         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4382         o->set_options[index] |= 1UL << offset;
4383 }