options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11 #include <netinet/in.h>
  12
  13 #include "fio.h"
  14 #include "verify.h"
  15 #include "parse.h"
  16 #include "lib/fls.h"
  17 #include "lib/pattern.h"
  18 #include "options.h"
  19 #include "optgroup.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 bs_cmp(const void *p1, const void *p2)
  40 {
  41         const struct bssplit *bsp1 = p1;
  42         const struct bssplit *bsp2 = p2;
  43
  44         return (int) bsp1->perc - (int) bsp2->perc;
  45 }
  46
  47 struct split {
  48         unsigned int nr;
  49         unsigned int val1[100];
  50         unsigned int val2[100];
  51 };
  52
  53 static int split_parse_ddir(struct thread_options *o, struct split *split,
  54                             enum fio_ddir ddir, char *str)
  55 {
  56         unsigned int i, perc;
  57         long long val;
  58         char *fname;
  59
  60         split->nr = 0;
  61
  62         i = 0;
  63         while ((fname = strsep(&str, ":")) != NULL) {
  64                 char *perc_str;
  65
  66                 if (!strlen(fname))
  67                         break;
  68
  69                 perc_str = strstr(fname, "/");
  70                 if (perc_str) {
  71                         *perc_str = '\0';
  72                         perc_str++;
  73                         perc = atoi(perc_str);
  74                         if (perc > 100)
  75                                 perc = 100;
  76                         else if (!perc)
  77                                 perc = -1U;
  78                 } else
  79                         perc = -1U;
  80
  81                 if (str_to_decimal(fname, &val, 1, o, 0, 0)) {
  82                         log_err("fio: bssplit conversion failed\n");
  83                         return 1;
  84                 }
  85
  86                 split->val1[i] = val;
  87                 split->val2[i] = perc;
  88                 i++;
  89                 if (i == 100)
  90                         break;
  91         }
  92
  93         split->nr = i;
  94         return 0;
  95 }
  96
  97 static int bssplit_ddir(struct thread_options *o, enum fio_ddir ddir, char *str)
  98 {
  99         unsigned int i, perc, perc_missing;
 100         unsigned int max_bs, min_bs;
 101         struct split split;
 102
 103         memset(&split, 0, sizeof(split));
 104
 105         if (split_parse_ddir(o, &split, ddir, str))
 106                 return 1;
 107         if (!split.nr)
 108                 return 0;
 109
 110         max_bs = 0;
 111         min_bs = -1;
 112         o->bssplit[ddir] = malloc(split.nr * sizeof(struct bssplit));
 113         o->bssplit_nr[ddir] = split.nr;
 114         for (i = 0; i < split.nr; i++) {
 115                 if (split.val1[i] > max_bs)
 116                         max_bs = split.val1[i];
 117                 if (split.val1[i] < min_bs)
 118                         min_bs = split.val1[i];
 119
 120                 o->bssplit[ddir][i].bs = split.val1[i];
 121                 o->bssplit[ddir][i].perc =split.val2[i];
 122         }
 123
 124         /*
 125          * Now check if the percentages add up, and how much is missing
 126          */
 127         perc = perc_missing = 0;
 128         for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 129                 struct bssplit *bsp = &o->bssplit[ddir][i];
 130
 131                 if (bsp->perc == -1U)
 132                         perc_missing++;
 133                 else
 134                         perc += bsp->perc;
 135         }
 136
 137         if (perc > 100 && perc_missing > 1) {
 138                 log_err("fio: bssplit percentages add to more than 100%%\n");
 139                 free(o->bssplit[ddir]);
 140                 o->bssplit[ddir] = NULL;
 141                 return 1;
 142         }
 143
 144         /*
 145          * If values didn't have a percentage set, divide the remains between
 146          * them.
 147          */
 148         if (perc_missing) {
 149                 if (perc_missing == 1 && o->bssplit_nr[ddir] == 1)
 150                         perc = 100;
 151                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
 152                         struct bssplit *bsp = &o->bssplit[ddir][i];
 153
 154                         if (bsp->perc == -1U)
 155                                 bsp->perc = (100 - perc) / perc_missing;
 156                 }
 157         }
 158
 159         o->min_bs[ddir] = min_bs;
 160         o->max_bs[ddir] = max_bs;
 161
 162         /*
 163          * now sort based on percentages, for ease of lookup
 164          */
 165         qsort(o->bssplit[ddir], o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 166         return 0;
 167 }
 168
 169 typedef int (split_parse_fn)(struct thread_options *, enum fio_ddir, char *);
 170
 171 static int str_split_parse(struct thread_data *td, char *str, split_parse_fn *fn)
 172 {
 173         char *odir, *ddir;
 174         int ret = 0;
 175
 176         odir = strchr(str, ',');
 177         if (odir) {
 178                 ddir = strchr(odir + 1, ',');
 179                 if (ddir) {
 180                         ret = fn(&td->o, DDIR_TRIM, ddir + 1);
 181                         if (!ret)
 182                                 *ddir = '\0';
 183                 } else {
 184                         char *op;
 185
 186                         op = strdup(odir + 1);
 187                         ret = fn(&td->o, DDIR_TRIM, op);
 188
 189                         free(op);
 190                 }
 191                 if (!ret)
 192                         ret = fn(&td->o, DDIR_WRITE, odir + 1);
 193                 if (!ret) {
 194                         *odir = '\0';
 195                         ret = fn(&td->o, DDIR_READ, str);
 196                 }
 197         } else {
 198                 char *op;
 199
 200                 op = strdup(str);
 201                 ret = fn(&td->o, DDIR_WRITE, op);
 202                 free(op);
 203
 204                 if (!ret) {
 205                         op = strdup(str);
 206                         ret = fn(&td->o, DDIR_TRIM, op);
 207                         free(op);
 208                 }
 209                 if (!ret)
 210                         ret = fn(&td->o, DDIR_READ, str);
 211         }
 212
 213         return ret;
 214 }
 215
 216 static int str_bssplit_cb(void *data, const char *input)
 217 {
 218         struct thread_data *td = data;
 219         char *str, *p;
 220         int ret = 0;
 221
 222         p = str = strdup(input);
 223
 224         strip_blank_front(&str);
 225         strip_blank_end(str);
 226
 227         ret = str_split_parse(td, str, bssplit_ddir);
 228
 229         if (parse_dryrun()) {
 230                 int i;
 231
 232                 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 233                         free(td->o.bssplit[i]);
 234                         td->o.bssplit[i] = NULL;
 235                         td->o.bssplit_nr[i] = 0;
 236                 }
 237         }
 238
 239         free(p);
 240         return ret;
 241 }
 242
 243 static int str2error(char *str)
 244 {
 245         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
 246                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
 247                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
 248                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
 249                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
 250                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
 251                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
 252                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
 253         int i = 0, num = sizeof(err) / sizeof(void *);
 254
 255         while (i < num) {
 256                 if (!strcmp(err[i], str))
 257                         return i + 1;
 258                 i++;
 259         }
 260         return 0;
 261 }
 262
 263 static int ignore_error_type(struct thread_data *td, int etype, char *str)
 264 {
 265         unsigned int i;
 266         int *error;
 267         char *fname;
 268
 269         if (etype >= ERROR_TYPE_CNT) {
 270                 log_err("Illegal error type\n");
 271                 return 1;
 272         }
 273
 274         td->o.ignore_error_nr[etype] = 4;
 275         error = malloc(4 * sizeof(struct bssplit));
 276
 277         i = 0;
 278         while ((fname = strsep(&str, ":")) != NULL) {
 279
 280                 if (!strlen(fname))
 281                         break;
 282
 283                 /*
 284                  * grow struct buffer, if needed
 285                  */
 286                 if (i == td->o.ignore_error_nr[etype]) {
 287                         td->o.ignore_error_nr[etype] <<= 1;
 288                         error = realloc(error, td->o.ignore_error_nr[etype]
 289                                                   * sizeof(int));
 290                 }
 291                 if (fname[0] == 'E') {
 292                         error[i] = str2error(fname);
 293                 } else {
 294                         error[i] = atoi(fname);
 295                         if (error[i] < 0)
 296                                 error[i] = -error[i];
 297                 }
 298                 if (!error[i]) {
 299                         log_err("Unknown error %s, please use number value \n",
 300                                   fname);
 301                         free(error);
 302                         return 1;
 303                 }
 304                 i++;
 305         }
 306         if (i) {
 307                 td->o.continue_on_error |= 1 << etype;
 308                 td->o.ignore_error_nr[etype] = i;
 309                 td->o.ignore_error[etype] = error;
 310         } else
 311                 free(error);
 312
 313         return 0;
 314
 315 }
 316
 317 static int str_ignore_error_cb(void *data, const char *input)
 318 {
 319         struct thread_data *td = data;
 320         char *str, *p, *n;
 321         int type = 0, ret = 1;
 322
 323         if (parse_dryrun())
 324                 return 0;
 325
 326         p = str = strdup(input);
 327
 328         strip_blank_front(&str);
 329         strip_blank_end(str);
 330
 331         while (p) {
 332                 n = strchr(p, ',');
 333                 if (n)
 334                         *n++ = '\0';
 335                 ret = ignore_error_type(td, type, p);
 336                 if (ret)
 337                         break;
 338                 p = n;
 339                 type++;
 340         }
 341         free(str);
 342         return ret;
 343 }
 344
 345 static int str_rw_cb(void *data, const char *str)
 346 {
 347         struct thread_data *td = data;
 348         struct thread_options *o = &td->o;
 349         char *nr;
 350
 351         if (parse_dryrun())
 352                 return 0;
 353
 354         o->ddir_seq_nr = 1;
 355         o->ddir_seq_add = 0;
 356
 357         nr = get_opt_postfix(str);
 358         if (!nr)
 359                 return 0;
 360
 361         if (td_random(td))
 362                 o->ddir_seq_nr = atoi(nr);
 363         else {
 364                 long long val;
 365
 366                 if (str_to_decimal(nr, &val, 1, o, 0, 0)) {
 367                         log_err("fio: rw postfix parsing failed\n");
 368                         free(nr);
 369                         return 1;
 370                 }
 371
 372                 o->ddir_seq_add = val;
 373         }
 374
 375         free(nr);
 376         return 0;
 377 }
 378
 379 static int str_mem_cb(void *data, const char *mem)
 380 {
 381         struct thread_data *td = data;
 382
 383         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP ||
 384             td->o.mem_type == MEM_MMAPSHARED)
 385                 td->o.mmapfile = get_opt_postfix(mem);
 386
 387         return 0;
 388 }
 389
 390 static int fio_clock_source_cb(void *data, const char *str)
 391 {
 392         struct thread_data *td = data;
 393
 394         fio_clock_source = td->o.clocksource;
 395         fio_clock_source_set = 1;
 396         fio_clock_init();
 397         return 0;
 398 }
 399
 400 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 401 {
 402         struct thread_data *td = data;
 403
 404         td->o.rwmix[DDIR_READ] = *val;
 405         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 406         return 0;
 407 }
 408
 409 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 410 {
 411         struct thread_data *td = data;
 412
 413         td->o.rwmix[DDIR_WRITE] = *val;
 414         td->o.rwmix[DDIR_READ] = 100 - *val;
 415         return 0;
 416 }
 417
 418 static int str_exitall_cb(void)
 419 {
 420         exitall_on_terminate = 1;
 421         return 0;
 422 }
 423
 424 #ifdef FIO_HAVE_CPU_AFFINITY
 425 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
 426 {
 427         unsigned int i, index, cpus_in_mask;
 428         const long max_cpu = cpus_online();
 429
 430         cpus_in_mask = fio_cpu_count(mask);
 431         cpu_index = cpu_index % cpus_in_mask;
 432
 433         index = 0;
 434         for (i = 0; i < max_cpu; i++) {
 435                 if (!fio_cpu_isset(mask, i))
 436                         continue;
 437
 438                 if (cpu_index != index)
 439                         fio_cpu_clear(mask, i);
 440
 441                 index++;
 442         }
 443
 444         return fio_cpu_count(mask);
 445 }
 446
 447 static int str_cpumask_cb(void *data, unsigned long long *val)
 448 {
 449         struct thread_data *td = data;
 450         unsigned int i;
 451         long max_cpu;
 452         int ret;
 453
 454         if (parse_dryrun())
 455                 return 0;
 456
 457         ret = fio_cpuset_init(&td->o.cpumask);
 458         if (ret < 0) {
 459                 log_err("fio: cpuset_init failed\n");
 460                 td_verror(td, ret, "fio_cpuset_init");
 461                 return 1;
 462         }
 463
 464         max_cpu = cpus_online();
 465
 466         for (i = 0; i < sizeof(int) * 8; i++) {
 467                 if ((1 << i) & *val) {
 468                         if (i >= max_cpu) {
 469                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 470                                                                 max_cpu - 1);
 471                                 return 1;
 472                         }
 473                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 474                         fio_cpu_set(&td->o.cpumask, i);
 475                 }
 476         }
 477
 478         return 0;
 479 }
 480
 481 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 482                             const char *input)
 483 {
 484         char *cpu, *str, *p;
 485         long max_cpu;
 486         int ret = 0;
 487
 488         ret = fio_cpuset_init(mask);
 489         if (ret < 0) {
 490                 log_err("fio: cpuset_init failed\n");
 491                 td_verror(td, ret, "fio_cpuset_init");
 492                 return 1;
 493         }
 494
 495         p = str = strdup(input);
 496
 497         strip_blank_front(&str);
 498         strip_blank_end(str);
 499
 500         max_cpu = cpus_online();
 501
 502         while ((cpu = strsep(&str, ",")) != NULL) {
 503                 char *str2, *cpu2;
 504                 int icpu, icpu2;
 505
 506                 if (!strlen(cpu))
 507                         break;
 508
 509                 str2 = cpu;
 510                 icpu2 = -1;
 511                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 512                         if (!strlen(cpu2))
 513                                 break;
 514
 515                         icpu2 = atoi(cpu2);
 516                 }
 517
 518                 icpu = atoi(cpu);
 519                 if (icpu2 == -1)
 520                         icpu2 = icpu;
 521                 while (icpu <= icpu2) {
 522                         if (icpu >= FIO_MAX_CPUS) {
 523                                 log_err("fio: your OS only supports up to"
 524                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 525                                 ret = 1;
 526                                 break;
 527                         }
 528                         if (icpu >= max_cpu) {
 529                                 log_err("fio: CPU %d too large (max=%ld)\n",
 530                                                         icpu, max_cpu - 1);
 531                                 ret = 1;
 532                                 break;
 533                         }
 534
 535                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 536                         fio_cpu_set(mask, icpu);
 537                         icpu++;
 538                 }
 539                 if (ret)
 540                         break;
 541         }
 542
 543         free(p);
 544         return ret;
 545 }
 546
 547 static int str_cpus_allowed_cb(void *data, const char *input)
 548 {
 549         struct thread_data *td = data;
 550
 551         if (parse_dryrun())
 552                 return 0;
 553
 554         return set_cpus_allowed(td, &td->o.cpumask, input);
 555 }
 556
 557 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 558 {
 559         struct thread_data *td = data;
 560
 561         if (parse_dryrun())
 562                 return 0;
 563
 564         return set_cpus_allowed(td, &td->o.verify_cpumask, input);
 565 }
 566
 567 #ifdef CONFIG_ZLIB
 568 static int str_log_cpus_allowed_cb(void *data, const char *input)
 569 {
 570         struct thread_data *td = data;
 571
 572         if (parse_dryrun())
 573                 return 0;
 574
 575         return set_cpus_allowed(td, &td->o.log_gz_cpumask, input);
 576 }
 577 #endif /* CONFIG_ZLIB */
 578
 579 #endif /* FIO_HAVE_CPU_AFFINITY */
 580
 581 #ifdef CONFIG_LIBNUMA
 582 static int str_numa_cpunodes_cb(void *data, char *input)
 583 {
 584         struct thread_data *td = data;
 585         struct bitmask *verify_bitmask;
 586
 587         if (parse_dryrun())
 588                 return 0;
 589
 590         /* numa_parse_nodestring() parses a character string list
 591          * of nodes into a bit mask. The bit mask is allocated by
 592          * numa_allocate_nodemask(), so it should be freed by
 593          * numa_free_nodemask().
 594          */
 595         verify_bitmask = numa_parse_nodestring(input);
 596         if (verify_bitmask == NULL) {
 597                 log_err("fio: numa_parse_nodestring failed\n");
 598                 td_verror(td, 1, "str_numa_cpunodes_cb");
 599                 return 1;
 600         }
 601         numa_free_nodemask(verify_bitmask);
 602
 603         td->o.numa_cpunodes = strdup(input);
 604         return 0;
 605 }
 606
 607 static int str_numa_mpol_cb(void *data, char *input)
 608 {
 609         struct thread_data *td = data;
 610         const char * const policy_types[] =
 611                 { "default", "prefer", "bind", "interleave", "local", NULL };
 612         int i;
 613         char *nodelist;
 614         struct bitmask *verify_bitmask;
 615
 616         if (parse_dryrun())
 617                 return 0;
 618
 619         nodelist = strchr(input, ':');
 620         if (nodelist) {
 621                 /* NUL-terminate mode */
 622                 *nodelist++ = '\0';
 623         }
 624
 625         for (i = 0; i <= MPOL_LOCAL; i++) {
 626                 if (!strcmp(input, policy_types[i])) {
 627                         td->o.numa_mem_mode = i;
 628                         break;
 629                 }
 630         }
 631         if (i > MPOL_LOCAL) {
 632                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
 633                 goto out;
 634         }
 635
 636         switch (td->o.numa_mem_mode) {
 637         case MPOL_PREFERRED:
 638                 /*
 639                  * Insist on a nodelist of one node only
 640                  */
 641                 if (nodelist) {
 642                         char *rest = nodelist;
 643                         while (isdigit(*rest))
 644                                 rest++;
 645                         if (*rest) {
 646                                 log_err("fio: one node only for \'prefer\'\n");
 647                                 goto out;
 648                         }
 649                 } else {
 650                         log_err("fio: one node is needed for \'prefer\'\n");
 651                         goto out;
 652                 }
 653                 break;
 654         case MPOL_INTERLEAVE:
 655                 /*
 656                  * Default to online nodes with memory if no nodelist
 657                  */
 658                 if (!nodelist)
 659                         nodelist = strdup("all");
 660                 break;
 661         case MPOL_LOCAL:
 662         case MPOL_DEFAULT:
 663                 /*
 664                  * Don't allow a nodelist
 665                  */
 666                 if (nodelist) {
 667                         log_err("fio: NO nodelist for \'local\'\n");
 668                         goto out;
 669                 }
 670                 break;
 671         case MPOL_BIND:
 672                 /*
 673                  * Insist on a nodelist
 674                  */
 675                 if (!nodelist) {
 676                         log_err("fio: a nodelist is needed for \'bind\'\n");
 677                         goto out;
 678                 }
 679                 break;
 680         }
 681
 682
 683         /* numa_parse_nodestring() parses a character string list
 684          * of nodes into a bit mask. The bit mask is allocated by
 685          * numa_allocate_nodemask(), so it should be freed by
 686          * numa_free_nodemask().
 687          */
 688         switch (td->o.numa_mem_mode) {
 689         case MPOL_PREFERRED:
 690                 td->o.numa_mem_prefer_node = atoi(nodelist);
 691                 break;
 692         case MPOL_INTERLEAVE:
 693         case MPOL_BIND:
 694                 verify_bitmask = numa_parse_nodestring(nodelist);
 695                 if (verify_bitmask == NULL) {
 696                         log_err("fio: numa_parse_nodestring failed\n");
 697                         td_verror(td, 1, "str_numa_memnodes_cb");
 698                         return 1;
 699                 }
 700                 td->o.numa_memnodes = strdup(nodelist);
 701                 numa_free_nodemask(verify_bitmask);
 702
 703                 break;
 704         case MPOL_LOCAL:
 705         case MPOL_DEFAULT:
 706         default:
 707                 break;
 708         }
 709
 710         return 0;
 711 out:
 712         return 1;
 713 }
 714 #endif
 715
 716 static int str_fst_cb(void *data, const char *str)
 717 {
 718         struct thread_data *td = data;
 719         char *nr = get_opt_postfix(str);
 720
 721         td->file_service_nr = 1;
 722         if (nr) {
 723                 td->file_service_nr = atoi(nr);
 724                 free(nr);
 725         }
 726
 727         return 0;
 728 }
 729
 730 #ifdef CONFIG_SYNC_FILE_RANGE
 731 static int str_sfr_cb(void *data, const char *str)
 732 {
 733         struct thread_data *td = data;
 734         char *nr = get_opt_postfix(str);
 735
 736         td->sync_file_range_nr = 1;
 737         if (nr) {
 738                 td->sync_file_range_nr = atoi(nr);
 739                 free(nr);
 740         }
 741
 742         return 0;
 743 }
 744 #endif
 745
 746 static int zone_cmp(const void *p1, const void *p2)
 747 {
 748         const struct zone_split *zsp1 = p1;
 749         const struct zone_split *zsp2 = p2;
 750
 751         return (int) zsp2->access_perc - (int) zsp1->access_perc;
 752 }
 753
 754 static int zone_split_ddir(struct thread_options *o, enum fio_ddir ddir,
 755                            char *str)
 756 {
 757         unsigned int i, perc, perc_missing, sperc, sperc_missing;
 758         struct split split;
 759
 760         memset(&split, 0, sizeof(split));
 761
 762         if (split_parse_ddir(o, &split, ddir, str))
 763                 return 1;
 764         if (!split.nr)
 765                 return 0;
 766
 767         o->zone_split[ddir] = malloc(split.nr * sizeof(struct zone_split));
 768         o->zone_split_nr[ddir] = split.nr;
 769         for (i = 0; i < split.nr; i++) {
 770                 o->zone_split[ddir][i].access_perc = split.val1[i];
 771                 o->zone_split[ddir][i].size_perc = split.val2[i];
 772         }
 773
 774         /*
 775          * Now check if the percentages add up, and how much is missing
 776          */
 777         perc = perc_missing = 0;
 778         sperc = sperc_missing = 0;
 779         for (i = 0; i < o->zone_split_nr[ddir]; i++) {
 780                 struct zone_split *zsp = &o->zone_split[ddir][i];
 781
 782                 if (zsp->access_perc == (uint8_t) -1U)
 783                         perc_missing++;
 784                 else
 785                         perc += zsp->access_perc;
 786
 787                 if (zsp->size_perc == (uint8_t) -1U)
 788                         sperc_missing++;
 789                 else
 790                         sperc += zsp->size_perc;
 791
 792         }
 793
 794         if (perc > 100 || sperc > 100) {
 795                 log_err("fio: zone_split percentages add to more than 100%%\n");
 796                 free(o->zone_split[ddir]);
 797                 o->zone_split[ddir] = NULL;
 798                 return 1;
 799         }
 800         if (perc < 100) {
 801                 log_err("fio: access percentage don't add up to 100 for zoned "
 802                         "random distribution (got=%u)\n", perc);
 803                 free(o->zone_split[ddir]);
 804                 o->zone_split[ddir] = NULL;
 805                 return 1;
 806         }
 807
 808         /*
 809          * If values didn't have a percentage set, divide the remains between
 810          * them.
 811          */
 812         if (perc_missing) {
 813                 if (perc_missing == 1 && o->zone_split_nr[ddir] == 1)
 814                         perc = 100;
 815                 for (i = 0; i < o->zone_split_nr[ddir]; i++) {
 816                         struct zone_split *zsp = &o->zone_split[ddir][i];
 817
 818                         if (zsp->access_perc == (uint8_t) -1U)
 819                                 zsp->access_perc = (100 - perc) / perc_missing;
 820                 }
 821         }
 822         if (sperc_missing) {
 823                 if (sperc_missing == 1 && o->zone_split_nr[ddir] == 1)
 824                         sperc = 100;
 825                 for (i = 0; i < o->zone_split_nr[ddir]; i++) {
 826                         struct zone_split *zsp = &o->zone_split[ddir][i];
 827
 828                         if (zsp->size_perc == (uint8_t) -1U)
 829                                 zsp->size_perc = (100 - sperc) / sperc_missing;
 830                 }
 831         }
 832
 833         /*
 834          * now sort based on percentages, for ease of lookup
 835          */
 836         qsort(o->zone_split[ddir], o->zone_split_nr[ddir], sizeof(struct zone_split), zone_cmp);
 837         return 0;
 838 }
 839
 840 static void __td_zone_gen_index(struct thread_data *td, enum fio_ddir ddir)
 841 {
 842         unsigned int i, j, sprev, aprev;
 843
 844         td->zone_state_index[ddir] = malloc(sizeof(struct zone_split_index) * 100);
 845
 846         sprev = aprev = 0;
 847         for (i = 0; i < td->o.zone_split_nr[ddir]; i++) {
 848                 struct zone_split *zsp = &td->o.zone_split[ddir][i];
 849
 850                 for (j = aprev; j < aprev + zsp->access_perc; j++) {
 851                         struct zone_split_index *zsi = &td->zone_state_index[ddir][j];
 852
 853                         zsi->size_perc = sprev + zsp->size_perc;
 854                         zsi->size_perc_prev = sprev;
 855                 }
 856
 857                 aprev += zsp->access_perc;
 858                 sprev += zsp->size_perc;
 859         }
 860 }
 861
 862 /*
 863  * Generate state table for indexes, so we don't have to do it inline from
 864  * the hot IO path
 865  */
 866 static void td_zone_gen_index(struct thread_data *td)
 867 {
 868         int i;
 869
 870         td->zone_state_index = malloc(DDIR_RWDIR_CNT *
 871                                         sizeof(struct zone_split_index *));
 872
 873         for (i = 0; i < DDIR_RWDIR_CNT; i++)
 874                 __td_zone_gen_index(td, i);
 875 }
 876
 877 static int parse_zoned_distribution(struct thread_data *td, const char *input)
 878 {
 879         char *str, *p;
 880         int i, ret = 0;
 881
 882         p = str = strdup(input);
 883
 884         strip_blank_front(&str);
 885         strip_blank_end(str);
 886
 887         /* We expect it to start like that, bail if not */
 888         if (strncmp(str, "zoned:", 6)) {
 889                 log_err("fio: mismatch in zoned input <%s>\n", str);
 890                 free(p);
 891                 return 1;
 892         }
 893         str += strlen("zoned:");
 894
 895         ret = str_split_parse(td, str, zone_split_ddir);
 896
 897         free(p);
 898
 899         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 900                 int j;
 901
 902                 dprint(FD_PARSE, "zone ddir %d (nr=%u): \n", i, td->o.zone_split_nr[i]);
 903
 904                 for (j = 0; j < td->o.zone_split_nr[i]; j++) {
 905                         struct zone_split *zsp = &td->o.zone_split[i][j];
 906
 907                         dprint(FD_PARSE, "\t%d: %u/%u\n", j, zsp->access_perc,
 908                                                                 zsp->size_perc);
 909                 }
 910         }
 911
 912         if (parse_dryrun()) {
 913                 int i;
 914
 915                 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 916                         free(td->o.zone_split[i]);
 917                         td->o.zone_split[i] = NULL;
 918                         td->o.zone_split_nr[i] = 0;
 919                 }
 920
 921                 return ret;
 922         }
 923
 924         if (!ret)
 925                 td_zone_gen_index(td);
 926         else {
 927                 for (i = 0; i < DDIR_RWDIR_CNT; i++)
 928                         td->o.zone_split_nr[i] = 0;
 929         }
 930
 931         return ret;
 932 }
 933
 934 static int str_random_distribution_cb(void *data, const char *str)
 935 {
 936         struct thread_data *td = data;
 937         double val;
 938         char *nr;
 939
 940         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
 941                 val = FIO_DEF_ZIPF;
 942         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
 943                 val = FIO_DEF_PARETO;
 944         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
 945                 val = 0.0;
 946         else if (td->o.random_distribution == FIO_RAND_DIST_ZONED)
 947                 return parse_zoned_distribution(td, str);
 948         else
 949                 return 0;
 950
 951         nr = get_opt_postfix(str);
 952         if (nr && !str_to_float(nr, &val, 0)) {
 953                 log_err("fio: random postfix parsing failed\n");
 954                 free(nr);
 955                 return 1;
 956         }
 957
 958         free(nr);
 959
 960         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
 961                 if (val == 1.00) {
 962                         log_err("fio: zipf theta must different than 1.0\n");
 963                         return 1;
 964                 }
 965                 if (parse_dryrun())
 966                         return 0;
 967                 td->o.zipf_theta.u.f = val;
 968         } else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) {
 969                 if (val <= 0.00 || val >= 1.00) {
 970                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
 971                         return 1;
 972                 }
 973                 if (parse_dryrun())
 974                         return 0;
 975                 td->o.pareto_h.u.f = val;
 976         } else {
 977                 if (val <= 0.00 || val >= 100.0) {
 978                         log_err("fio: normal deviation out of range (0 < input < 100.0)\n");
 979                         return 1;
 980                 }
 981                 if (parse_dryrun())
 982                         return 0;
 983                 td->o.gauss_dev.u.f = val;
 984         }
 985
 986         return 0;
 987 }
 988
 989 /*
 990  * Return next name in the string. Files are separated with ':'. If the ':'
 991  * is escaped with a '\', then that ':' is part of the filename and does not
 992  * indicate a new file.
 993  */
 994 static char *get_next_name(char **ptr)
 995 {
 996         char *str = *ptr;
 997         char *p, *start;
 998
 999         if (!str || !strlen(str))
1000                 return NULL;
1001
1002         start = str;
1003         do {
1004                 /*
1005                  * No colon, we are done
1006                  */
1007                 p = strchr(str, ':');
1008                 if (!p) {
1009                         *ptr = NULL;
1010                         break;
1011                 }
1012
1013                 /*
1014                  * We got a colon, but it's the first character. Skip and
1015                  * continue
1016                  */
1017                 if (p == start) {
1018                         str = ++start;
1019                         continue;
1020                 }
1021
1022                 if (*(p - 1) != '\\') {
1023                         *p = '\0';
1024                         *ptr = p + 1;
1025                         break;
1026                 }
1027
1028                 memmove(p - 1, p, strlen(p) + 1);
1029                 str = p;
1030         } while (1);
1031
1032         return start;
1033 }
1034
1035
1036 static int get_max_name_idx(char *input)
1037 {
1038         unsigned int cur_idx;
1039         char *str, *p;
1040
1041         p = str = strdup(input);
1042         for (cur_idx = 0; ; cur_idx++)
1043                 if (get_next_name(&str) == NULL)
1044                         break;
1045
1046         free(p);
1047         return cur_idx;
1048 }
1049
1050 /*
1051  * Returns the directory at the index, indexes > entires will be
1052  * assigned via modulo division of the index
1053  */
1054 int set_name_idx(char *target, size_t tlen, char *input, int index)
1055 {
1056         unsigned int cur_idx;
1057         int len;
1058         char *fname, *str, *p;
1059
1060         p = str = strdup(input);
1061
1062         index %= get_max_name_idx(input);
1063         for (cur_idx = 0; cur_idx <= index; cur_idx++)
1064                 fname = get_next_name(&str);
1065
1066         if (client_sockaddr_str[0]) {
1067                 len = snprintf(target, tlen, "%s/%s.", fname,
1068                                 client_sockaddr_str);
1069         } else
1070                 len = snprintf(target, tlen, "%s/", fname);
1071
1072         target[tlen - 1] = '\0';
1073         free(p);
1074
1075         return len;
1076 }
1077
1078 static int str_filename_cb(void *data, const char *input)
1079 {
1080         struct thread_data *td = data;
1081         char *fname, *str, *p;
1082
1083         p = str = strdup(input);
1084
1085         strip_blank_front(&str);
1086         strip_blank_end(str);
1087
1088         if (!td->files_index)
1089                 td->o.nr_files = 0;
1090
1091         while ((fname = get_next_name(&str)) != NULL) {
1092                 if (!strlen(fname))
1093                         break;
1094                 add_file(td, fname, 0, 1);
1095         }
1096
1097         free(p);
1098         return 0;
1099 }
1100
1101 static int str_directory_cb(void *data, const char fio_unused *unused)
1102 {
1103         struct thread_data *td = data;
1104         struct stat sb;
1105         char *dirname, *str, *p;
1106         int ret = 0;
1107
1108         if (parse_dryrun())
1109                 return 0;
1110
1111         p = str = strdup(td->o.directory);
1112         while ((dirname = get_next_name(&str)) != NULL) {
1113                 if (lstat(dirname, &sb) < 0) {
1114                         ret = errno;
1115
1116                         log_err("fio: %s is not a directory\n", dirname);
1117                         td_verror(td, ret, "lstat");
1118                         goto out;
1119                 }
1120                 if (!S_ISDIR(sb.st_mode)) {
1121                         log_err("fio: %s is not a directory\n", dirname);
1122                         ret = 1;
1123                         goto out;
1124                 }
1125         }
1126
1127 out:
1128         free(p);
1129         return ret;
1130 }
1131
1132 static int str_opendir_cb(void *data, const char fio_unused *str)
1133 {
1134         struct thread_data *td = data;
1135
1136         if (parse_dryrun())
1137                 return 0;
1138
1139         if (!td->files_index)
1140                 td->o.nr_files = 0;
1141
1142         return add_dir_files(td, td->o.opendir);
1143 }
1144
1145 static int str_buffer_pattern_cb(void *data, const char *input)
1146 {
1147         struct thread_data *td = data;
1148         int ret;
1149
1150         /* FIXME: for now buffer pattern does not support formats */
1151         ret = parse_and_fill_pattern(input, strlen(input), td->o.buffer_pattern,
1152                                      MAX_PATTERN_SIZE, NULL, 0, NULL, NULL);
1153         if (ret < 0)
1154                 return 1;
1155
1156         assert(ret != 0);
1157         td->o.buffer_pattern_bytes = ret;
1158         if (!td->o.compress_percentage)
1159                 td->o.refill_buffers = 0;
1160         td->o.scramble_buffers = 0;
1161         td->o.zero_buffers = 0;
1162
1163         return 0;
1164 }
1165
1166 static int str_buffer_compress_cb(void *data, unsigned long long *il)
1167 {
1168         struct thread_data *td = data;
1169
1170         td->flags |= TD_F_COMPRESS;
1171         td->o.compress_percentage = *il;
1172         return 0;
1173 }
1174
1175 static int str_dedupe_cb(void *data, unsigned long long *il)
1176 {
1177         struct thread_data *td = data;
1178
1179         td->flags |= TD_F_COMPRESS;
1180         td->o.dedupe_percentage = *il;
1181         td->o.refill_buffers = 1;
1182         return 0;
1183 }
1184
1185 static int str_verify_pattern_cb(void *data, const char *input)
1186 {
1187         struct pattern_fmt_desc fmt_desc[] = {
1188                 {
1189                         .fmt   = "%o",
1190                         .len   = FIELD_SIZE(struct io_u *, offset),
1191                         .paste = paste_blockoff
1192                 }
1193         };
1194         struct thread_data *td = data;
1195         int ret;
1196
1197         td->o.verify_fmt_sz = ARRAY_SIZE(td->o.verify_fmt);
1198         ret = parse_and_fill_pattern(input, strlen(input), td->o.verify_pattern,
1199                         MAX_PATTERN_SIZE, fmt_desc, sizeof(fmt_desc),
1200                         td->o.verify_fmt, &td->o.verify_fmt_sz);
1201         if (ret < 0)
1202                 return 1;
1203
1204         assert(ret != 0);
1205         td->o.verify_pattern_bytes = ret;
1206         /*
1207          * VERIFY_* could already be set
1208          */
1209         if (!fio_option_is_set(&td->o, verify))
1210                 td->o.verify = VERIFY_PATTERN;
1211
1212         return 0;
1213 }
1214
1215 static int str_gtod_reduce_cb(void *data, int *il)
1216 {
1217         struct thread_data *td = data;
1218         int val = *il;
1219
1220         td->o.disable_lat = !!val;
1221         td->o.disable_clat = !!val;
1222         td->o.disable_slat = !!val;
1223         td->o.disable_bw = !!val;
1224         td->o.clat_percentiles = !val;
1225         if (val)
1226                 td->tv_cache_mask = 63;
1227
1228         return 0;
1229 }
1230
1231 static int str_size_cb(void *data, unsigned long long *__val)
1232 {
1233         struct thread_data *td = data;
1234         unsigned long long v = *__val;
1235
1236         if (parse_is_percent(v)) {
1237                 td->o.size = 0;
1238                 td->o.size_percent = -1ULL - v;
1239         } else
1240                 td->o.size = v;
1241
1242         return 0;
1243 }
1244
1245 static int rw_verify(struct fio_option *o, void *data)
1246 {
1247         struct thread_data *td = data;
1248
1249         if (read_only && td_write(td)) {
1250                 log_err("fio: job <%s> has write bit set, but fio is in"
1251                         " read-only mode\n", td->o.name);
1252                 return 1;
1253         }
1254
1255         return 0;
1256 }
1257
1258 static int gtod_cpu_verify(struct fio_option *o, void *data)
1259 {
1260 #ifndef FIO_HAVE_CPU_AFFINITY
1261         struct thread_data *td = data;
1262
1263         if (td->o.gtod_cpu) {
1264                 log_err("fio: platform must support CPU affinity for"
1265                         "gettimeofday() offloading\n");
1266                 return 1;
1267         }
1268 #endif
1269
1270         return 0;
1271 }
1272
1273 /*
1274  * Map of job/command line options
1275  */
1276 struct fio_option fio_options[FIO_MAX_OPTS] = {
1277         {
1278                 .name   = "description",
1279                 .lname  = "Description of job",
1280                 .type   = FIO_OPT_STR_STORE,
1281                 .off1   = td_var_offset(description),
1282                 .help   = "Text job description",
1283                 .category = FIO_OPT_C_GENERAL,
1284                 .group  = FIO_OPT_G_DESC,
1285         },
1286         {
1287                 .name   = "name",
1288                 .lname  = "Job name",
1289                 .type   = FIO_OPT_STR_STORE,
1290                 .off1   = td_var_offset(name),
1291                 .help   = "Name of this job",
1292                 .category = FIO_OPT_C_GENERAL,
1293                 .group  = FIO_OPT_G_DESC,
1294         },
1295         {
1296                 .name   = "wait_for",
1297                 .lname  = "Waitee name",
1298                 .type   = FIO_OPT_STR_STORE,
1299                 .off1   = td_var_offset(wait_for),
1300                 .help   = "Name of the job this one wants to wait for before starting",
1301                 .category = FIO_OPT_C_GENERAL,
1302                 .group  = FIO_OPT_G_DESC,
1303         },
1304         {
1305                 .name   = "filename",
1306                 .lname  = "Filename(s)",
1307                 .type   = FIO_OPT_STR_STORE,
1308                 .off1   = td_var_offset(filename),
1309                 .cb     = str_filename_cb,
1310                 .prio   = -1, /* must come after "directory" */
1311                 .help   = "File(s) to use for the workload",
1312                 .category = FIO_OPT_C_FILE,
1313                 .group  = FIO_OPT_G_FILENAME,
1314         },
1315         {
1316                 .name   = "directory",
1317                 .lname  = "Directory",
1318                 .type   = FIO_OPT_STR_STORE,
1319                 .off1   = td_var_offset(directory),
1320                 .cb     = str_directory_cb,
1321                 .help   = "Directory to store files in",
1322                 .category = FIO_OPT_C_FILE,
1323                 .group  = FIO_OPT_G_FILENAME,
1324         },
1325         {
1326                 .name   = "filename_format",
1327                 .type   = FIO_OPT_STR_STORE,
1328                 .off1   = td_var_offset(filename_format),
1329                 .prio   = -1, /* must come after "directory" */
1330                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1331                 .def    = "$jobname.$jobnum.$filenum",
1332                 .category = FIO_OPT_C_FILE,
1333                 .group  = FIO_OPT_G_FILENAME,
1334         },
1335         {
1336                 .name   = "lockfile",
1337                 .lname  = "Lockfile",
1338                 .type   = FIO_OPT_STR,
1339                 .off1   = td_var_offset(file_lock_mode),
1340                 .help   = "Lock file when doing IO to it",
1341                 .prio   = 1,
1342                 .parent = "filename",
1343                 .hide   = 0,
1344                 .def    = "none",
1345                 .category = FIO_OPT_C_FILE,
1346                 .group  = FIO_OPT_G_FILENAME,
1347                 .posval = {
1348                           { .ival = "none",
1349                             .oval = FILE_LOCK_NONE,
1350                             .help = "No file locking",
1351                           },
1352                           { .ival = "exclusive",
1353                             .oval = FILE_LOCK_EXCLUSIVE,
1354                             .help = "Exclusive file lock",
1355                           },
1356                           {
1357                             .ival = "readwrite",
1358                             .oval = FILE_LOCK_READWRITE,
1359                             .help = "Read vs write lock",
1360                           },
1361                 },
1362         },
1363         {
1364                 .name   = "opendir",
1365                 .lname  = "Open directory",
1366                 .type   = FIO_OPT_STR_STORE,
1367                 .off1   = td_var_offset(opendir),
1368                 .cb     = str_opendir_cb,
1369                 .help   = "Recursively add files from this directory and down",
1370                 .category = FIO_OPT_C_FILE,
1371                 .group  = FIO_OPT_G_FILENAME,
1372         },
1373         {
1374                 .name   = "rw",
1375                 .lname  = "Read/write",
1376                 .alias  = "readwrite",
1377                 .type   = FIO_OPT_STR,
1378                 .cb     = str_rw_cb,
1379                 .off1   = td_var_offset(td_ddir),
1380                 .help   = "IO direction",
1381                 .def    = "read",
1382                 .verify = rw_verify,
1383                 .category = FIO_OPT_C_IO,
1384                 .group  = FIO_OPT_G_IO_BASIC,
1385                 .posval = {
1386                           { .ival = "read",
1387                             .oval = TD_DDIR_READ,
1388                             .help = "Sequential read",
1389                           },
1390                           { .ival = "write",
1391                             .oval = TD_DDIR_WRITE,
1392                             .help = "Sequential write",
1393                           },
1394                           { .ival = "trim",
1395                             .oval = TD_DDIR_TRIM,
1396                             .help = "Sequential trim",
1397                           },
1398                           { .ival = "randread",
1399                             .oval = TD_DDIR_RANDREAD,
1400                             .help = "Random read",
1401                           },
1402                           { .ival = "randwrite",
1403                             .oval = TD_DDIR_RANDWRITE,
1404                             .help = "Random write",
1405                           },
1406                           { .ival = "randtrim",
1407                             .oval = TD_DDIR_RANDTRIM,
1408                             .help = "Random trim",
1409                           },
1410                           { .ival = "rw",
1411                             .oval = TD_DDIR_RW,
1412                             .help = "Sequential read and write mix",
1413                           },
1414                           { .ival = "readwrite",
1415                             .oval = TD_DDIR_RW,
1416                             .help = "Sequential read and write mix",
1417                           },
1418                           { .ival = "randrw",
1419                             .oval = TD_DDIR_RANDRW,
1420                             .help = "Random read and write mix"
1421                           },
1422                           { .ival = "trimwrite",
1423                             .oval = TD_DDIR_TRIMWRITE,
1424                             .help = "Trim and write mix, trims preceding writes"
1425                           },
1426                 },
1427         },
1428         {
1429                 .name   = "rw_sequencer",
1430                 .lname  = "RW Sequencer",
1431                 .type   = FIO_OPT_STR,
1432                 .off1   = td_var_offset(rw_seq),
1433                 .help   = "IO offset generator modifier",
1434                 .def    = "sequential",
1435                 .category = FIO_OPT_C_IO,
1436                 .group  = FIO_OPT_G_IO_BASIC,
1437                 .posval = {
1438                           { .ival = "sequential",
1439                             .oval = RW_SEQ_SEQ,
1440                             .help = "Generate sequential offsets",
1441                           },
1442                           { .ival = "identical",
1443                             .oval = RW_SEQ_IDENT,
1444                             .help = "Generate identical offsets",
1445                           },
1446                 },
1447         },
1448
1449         {
1450                 .name   = "ioengine",
1451                 .lname  = "IO Engine",
1452                 .type   = FIO_OPT_STR_STORE,
1453                 .off1   = td_var_offset(ioengine),
1454                 .help   = "IO engine to use",
1455                 .def    = FIO_PREFERRED_ENGINE,
1456                 .category = FIO_OPT_C_IO,
1457                 .group  = FIO_OPT_G_IO_BASIC,
1458                 .posval = {
1459                           { .ival = "sync",
1460                             .help = "Use read/write",
1461                           },
1462                           { .ival = "psync",
1463                             .help = "Use pread/pwrite",
1464                           },
1465                           { .ival = "vsync",
1466                             .help = "Use readv/writev",
1467                           },
1468 #ifdef CONFIG_PWRITEV
1469                           { .ival = "pvsync",
1470                             .help = "Use preadv/pwritev",
1471                           },
1472 #endif
1473 #ifdef CONFIG_PWRITEV
1474                           { .ival = "pvsync2",
1475                             .help = "Use preadv2/pwritev2",
1476                           },
1477 #endif
1478 #ifdef CONFIG_LIBAIO
1479                           { .ival = "libaio",
1480                             .help = "Linux native asynchronous IO",
1481                           },
1482 #endif
1483 #ifdef CONFIG_POSIXAIO
1484                           { .ival = "posixaio",
1485                             .help = "POSIX asynchronous IO",
1486                           },
1487 #endif
1488 #ifdef CONFIG_SOLARISAIO
1489                           { .ival = "solarisaio",
1490                             .help = "Solaris native asynchronous IO",
1491                           },
1492 #endif
1493 #ifdef CONFIG_WINDOWSAIO
1494                           { .ival = "windowsaio",
1495                             .help = "Windows native asynchronous IO"
1496                           },
1497 #endif
1498 #ifdef CONFIG_RBD
1499                           { .ival = "rbd",
1500                             .help = "Rados Block Device asynchronous IO"
1501                           },
1502 #endif
1503                           { .ival = "mmap",
1504                             .help = "Memory mapped IO"
1505                           },
1506 #ifdef CONFIG_LINUX_SPLICE
1507                           { .ival = "splice",
1508                             .help = "splice/vmsplice based IO",
1509                           },
1510                           { .ival = "netsplice",
1511                             .help = "splice/vmsplice to/from the network",
1512                           },
1513 #endif
1514 #ifdef FIO_HAVE_SGIO
1515                           { .ival = "sg",
1516                             .help = "SCSI generic v3 IO",
1517                           },
1518 #endif
1519                           { .ival = "null",
1520                             .help = "Testing engine (no data transfer)",
1521                           },
1522                           { .ival = "net",
1523                             .help = "Network IO",
1524                           },
1525                           { .ival = "cpuio",
1526                             .help = "CPU cycle burner engine",
1527                           },
1528 #ifdef CONFIG_GUASI
1529                           { .ival = "guasi",
1530                             .help = "GUASI IO engine",
1531                           },
1532 #endif
1533 #ifdef FIO_HAVE_BINJECT
1534                           { .ival = "binject",
1535                             .help = "binject direct inject block engine",
1536                           },
1537 #endif
1538 #ifdef CONFIG_RDMA
1539                           { .ival = "rdma",
1540                             .help = "RDMA IO engine",
1541                           },
1542 #endif
1543 #ifdef CONFIG_FUSION_AW
1544                           { .ival = "fusion-aw-sync",
1545                             .help = "Fusion-io atomic write engine",
1546                           },
1547 #endif
1548 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1549                           { .ival = "e4defrag",
1550                             .help = "ext4 defrag engine",
1551                           },
1552 #endif
1553 #ifdef CONFIG_LINUX_FALLOCATE
1554                           { .ival = "falloc",
1555                             .help = "fallocate() file based engine",
1556                           },
1557 #endif
1558 #ifdef CONFIG_GFAPI
1559                           { .ival = "gfapi",
1560                             .help = "Glusterfs libgfapi(sync) based engine"
1561                           },
1562                           { .ival = "gfapi_async",
1563                             .help = "Glusterfs libgfapi(async) based engine"
1564                           },
1565 #endif
1566 #ifdef CONFIG_LIBHDFS
1567                           { .ival = "libhdfs",
1568                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1569                           },
1570 #endif
1571                           { .ival = "external",
1572                             .help = "Load external engine (append name)",
1573                           },
1574                 },
1575         },
1576         {
1577                 .name   = "iodepth",
1578                 .lname  = "IO Depth",
1579                 .type   = FIO_OPT_INT,
1580                 .off1   = td_var_offset(iodepth),
1581                 .help   = "Number of IO buffers to keep in flight",
1582                 .minval = 1,
1583                 .interval = 1,
1584                 .def    = "1",
1585                 .category = FIO_OPT_C_IO,
1586                 .group  = FIO_OPT_G_IO_BASIC,
1587         },
1588         {
1589                 .name   = "iodepth_batch",
1590                 .lname  = "IO Depth batch",
1591                 .alias  = "iodepth_batch_submit",
1592                 .type   = FIO_OPT_INT,
1593                 .off1   = td_var_offset(iodepth_batch),
1594                 .help   = "Number of IO buffers to submit in one go",
1595                 .parent = "iodepth",
1596                 .hide   = 1,
1597                 .minval = 1,
1598                 .interval = 1,
1599                 .def    = "1",
1600                 .category = FIO_OPT_C_IO,
1601                 .group  = FIO_OPT_G_IO_BASIC,
1602         },
1603         {
1604                 .name   = "iodepth_batch_complete_min",
1605                 .lname  = "Min IO depth batch complete",
1606                 .alias  = "iodepth_batch_complete",
1607                 .type   = FIO_OPT_INT,
1608                 .off1   = td_var_offset(iodepth_batch_complete_min),
1609                 .help   = "Min number of IO buffers to retrieve in one go",
1610                 .parent = "iodepth",
1611                 .hide   = 1,
1612                 .minval = 0,
1613                 .interval = 1,
1614                 .def    = "1",
1615                 .category = FIO_OPT_C_IO,
1616                 .group  = FIO_OPT_G_IO_BASIC,
1617         },
1618         {
1619                 .name   = "iodepth_batch_complete_max",
1620                 .lname  = "Max IO depth batch complete",
1621                 .type   = FIO_OPT_INT,
1622                 .off1   = td_var_offset(iodepth_batch_complete_max),
1623                 .help   = "Max number of IO buffers to retrieve in one go",
1624                 .parent = "iodepth",
1625                 .hide   = 1,
1626                 .minval = 0,
1627                 .interval = 1,
1628                 .category = FIO_OPT_C_IO,
1629                 .group  = FIO_OPT_G_IO_BASIC,
1630         },
1631         {
1632                 .name   = "iodepth_low",
1633                 .lname  = "IO Depth batch low",
1634                 .type   = FIO_OPT_INT,
1635                 .off1   = td_var_offset(iodepth_low),
1636                 .help   = "Low water mark for queuing depth",
1637                 .parent = "iodepth",
1638                 .hide   = 1,
1639                 .interval = 1,
1640                 .category = FIO_OPT_C_IO,
1641                 .group  = FIO_OPT_G_IO_BASIC,
1642         },
1643         {
1644                 .name   = "io_submit_mode",
1645                 .lname  = "IO submit mode",
1646                 .type   = FIO_OPT_STR,
1647                 .off1   = td_var_offset(io_submit_mode),
1648                 .help   = "How IO submissions and completions are done",
1649                 .def    = "inline",
1650                 .category = FIO_OPT_C_IO,
1651                 .group  = FIO_OPT_G_IO_BASIC,
1652                 .posval = {
1653                           { .ival = "inline",
1654                             .oval = IO_MODE_INLINE,
1655                             .help = "Submit and complete IO inline",
1656                           },
1657                           { .ival = "offload",
1658                             .oval = IO_MODE_OFFLOAD,
1659                             .help = "Offload submit and complete to threads",
1660                           },
1661                 },
1662         },
1663         {
1664                 .name   = "size",
1665                 .lname  = "Size",
1666                 .type   = FIO_OPT_STR_VAL,
1667                 .cb     = str_size_cb,
1668                 .off1   = td_var_offset(size),
1669                 .help   = "Total size of device or files",
1670                 .interval = 1024 * 1024,
1671                 .category = FIO_OPT_C_IO,
1672                 .group  = FIO_OPT_G_INVALID,
1673         },
1674         {
1675                 .name   = "io_size",
1676                 .alias  = "io_limit",
1677                 .lname  = "IO Size",
1678                 .type   = FIO_OPT_STR_VAL,
1679                 .off1   = td_var_offset(io_limit),
1680                 .interval = 1024 * 1024,
1681                 .category = FIO_OPT_C_IO,
1682                 .group  = FIO_OPT_G_INVALID,
1683         },
1684         {
1685                 .name   = "fill_device",
1686                 .lname  = "Fill device",
1687                 .alias  = "fill_fs",
1688                 .type   = FIO_OPT_BOOL,
1689                 .off1   = td_var_offset(fill_device),
1690                 .help   = "Write until an ENOSPC error occurs",
1691                 .def    = "0",
1692                 .category = FIO_OPT_C_FILE,
1693                 .group  = FIO_OPT_G_INVALID,
1694         },
1695         {
1696                 .name   = "filesize",
1697                 .lname  = "File size",
1698                 .type   = FIO_OPT_STR_VAL,
1699                 .off1   = td_var_offset(file_size_low),
1700                 .off2   = td_var_offset(file_size_high),
1701                 .minval = 1,
1702                 .help   = "Size of individual files",
1703                 .interval = 1024 * 1024,
1704                 .category = FIO_OPT_C_FILE,
1705                 .group  = FIO_OPT_G_INVALID,
1706         },
1707         {
1708                 .name   = "file_append",
1709                 .lname  = "File append",
1710                 .type   = FIO_OPT_BOOL,
1711                 .off1   = td_var_offset(file_append),
1712                 .help   = "IO will start at the end of the file(s)",
1713                 .def    = "0",
1714                 .category = FIO_OPT_C_FILE,
1715                 .group  = FIO_OPT_G_INVALID,
1716         },
1717         {
1718                 .name   = "offset",
1719                 .lname  = "IO offset",
1720                 .alias  = "fileoffset",
1721                 .type   = FIO_OPT_STR_VAL,
1722                 .off1   = td_var_offset(start_offset),
1723                 .help   = "Start IO from this offset",
1724                 .def    = "0",
1725                 .interval = 1024 * 1024,
1726                 .category = FIO_OPT_C_IO,
1727                 .group  = FIO_OPT_G_INVALID,
1728         },
1729         {
1730                 .name   = "offset_increment",
1731                 .lname  = "IO offset increment",
1732                 .type   = FIO_OPT_STR_VAL,
1733                 .off1   = td_var_offset(offset_increment),
1734                 .help   = "What is the increment from one offset to the next",
1735                 .parent = "offset",
1736                 .hide   = 1,
1737                 .def    = "0",
1738                 .interval = 1024 * 1024,
1739                 .category = FIO_OPT_C_IO,
1740                 .group  = FIO_OPT_G_INVALID,
1741         },
1742         {
1743                 .name   = "number_ios",
1744                 .lname  = "Number of IOs to perform",
1745                 .type   = FIO_OPT_STR_VAL,
1746                 .off1   = td_var_offset(number_ios),
1747                 .help   = "Force job completion after this number of IOs",
1748                 .def    = "0",
1749                 .category = FIO_OPT_C_IO,
1750                 .group  = FIO_OPT_G_INVALID,
1751         },
1752         {
1753                 .name   = "bs",
1754                 .lname  = "Block size",
1755                 .alias  = "blocksize",
1756                 .type   = FIO_OPT_INT,
1757                 .off1   = td_var_offset(bs[DDIR_READ]),
1758                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1759                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1760                 .minval = 1,
1761                 .help   = "Block size unit",
1762                 .def    = "4k",
1763                 .parent = "rw",
1764                 .hide   = 1,
1765                 .interval = 512,
1766                 .category = FIO_OPT_C_IO,
1767                 .group  = FIO_OPT_G_INVALID,
1768         },
1769         {
1770                 .name   = "ba",
1771                 .lname  = "Block size align",
1772                 .alias  = "blockalign",
1773                 .type   = FIO_OPT_INT,
1774                 .off1   = td_var_offset(ba[DDIR_READ]),
1775                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1776                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1777                 .minval = 1,
1778                 .help   = "IO block offset alignment",
1779                 .parent = "rw",
1780                 .hide   = 1,
1781                 .interval = 512,
1782                 .category = FIO_OPT_C_IO,
1783                 .group  = FIO_OPT_G_INVALID,
1784         },
1785         {
1786                 .name   = "bsrange",
1787                 .lname  = "Block size range",
1788                 .alias  = "blocksize_range",
1789                 .type   = FIO_OPT_RANGE,
1790                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1791                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1792                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1793                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1794                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1795                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1796                 .minval = 1,
1797                 .help   = "Set block size range (in more detail than bs)",
1798                 .parent = "rw",
1799                 .hide   = 1,
1800                 .interval = 4096,
1801                 .category = FIO_OPT_C_IO,
1802                 .group  = FIO_OPT_G_INVALID,
1803         },
1804         {
1805                 .name   = "bssplit",
1806                 .lname  = "Block size split",
1807                 .type   = FIO_OPT_STR,
1808                 .cb     = str_bssplit_cb,
1809                 .off1   = td_var_offset(bssplit),
1810                 .help   = "Set a specific mix of block sizes",
1811                 .parent = "rw",
1812                 .hide   = 1,
1813                 .category = FIO_OPT_C_IO,
1814                 .group  = FIO_OPT_G_INVALID,
1815         },
1816         {
1817                 .name   = "bs_unaligned",
1818                 .lname  = "Block size unaligned",
1819                 .alias  = "blocksize_unaligned",
1820                 .type   = FIO_OPT_STR_SET,
1821                 .off1   = td_var_offset(bs_unaligned),
1822                 .help   = "Don't sector align IO buffer sizes",
1823                 .parent = "rw",
1824                 .hide   = 1,
1825                 .category = FIO_OPT_C_IO,
1826                 .group  = FIO_OPT_G_INVALID,
1827         },
1828         {
1829                 .name   = "bs_is_seq_rand",
1830                 .lname  = "Block size division is seq/random (not read/write)",
1831                 .type   = FIO_OPT_BOOL,
1832                 .off1   = td_var_offset(bs_is_seq_rand),
1833                 .help   = "Consider any blocksize setting to be sequential,random",
1834                 .def    = "0",
1835                 .parent = "blocksize",
1836                 .category = FIO_OPT_C_IO,
1837                 .group  = FIO_OPT_G_INVALID,
1838         },
1839         {
1840                 .name   = "randrepeat",
1841                 .lname  = "Random repeatable",
1842                 .type   = FIO_OPT_BOOL,
1843                 .off1   = td_var_offset(rand_repeatable),
1844                 .help   = "Use repeatable random IO pattern",
1845                 .def    = "1",
1846                 .parent = "rw",
1847                 .hide   = 1,
1848                 .category = FIO_OPT_C_IO,
1849                 .group  = FIO_OPT_G_RANDOM,
1850         },
1851         {
1852                 .name   = "randseed",
1853                 .lname  = "The random generator seed",
1854                 .type   = FIO_OPT_STR_VAL,
1855                 .off1   = td_var_offset(rand_seed),
1856                 .help   = "Set the random generator seed value",
1857                 .def    = "0x89",
1858                 .parent = "rw",
1859                 .category = FIO_OPT_C_IO,
1860                 .group  = FIO_OPT_G_RANDOM,
1861         },
1862         {
1863                 .name   = "use_os_rand",
1864                 .lname  = "Use OS random",
1865                 .type   = FIO_OPT_DEPRECATED,
1866                 .off1   = td_var_offset(dep_use_os_rand),
1867                 .category = FIO_OPT_C_IO,
1868                 .group  = FIO_OPT_G_RANDOM,
1869         },
1870         {
1871                 .name   = "norandommap",
1872                 .lname  = "No randommap",
1873                 .type   = FIO_OPT_STR_SET,
1874                 .off1   = td_var_offset(norandommap),
1875                 .help   = "Accept potential duplicate random blocks",
1876                 .parent = "rw",
1877                 .hide   = 1,
1878                 .hide_on_set = 1,
1879                 .category = FIO_OPT_C_IO,
1880                 .group  = FIO_OPT_G_RANDOM,
1881         },
1882         {
1883                 .name   = "softrandommap",
1884                 .lname  = "Soft randommap",
1885                 .type   = FIO_OPT_BOOL,
1886                 .off1   = td_var_offset(softrandommap),
1887                 .help   = "Set norandommap if randommap allocation fails",
1888                 .parent = "norandommap",
1889                 .hide   = 1,
1890                 .def    = "0",
1891                 .category = FIO_OPT_C_IO,
1892                 .group  = FIO_OPT_G_RANDOM,
1893         },
1894         {
1895                 .name   = "random_generator",
1896                 .type   = FIO_OPT_STR,
1897                 .off1   = td_var_offset(random_generator),
1898                 .help   = "Type of random number generator to use",
1899                 .def    = "tausworthe",
1900                 .posval = {
1901                           { .ival = "tausworthe",
1902                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1903                             .help = "Strong Tausworthe generator",
1904                           },
1905                           { .ival = "lfsr",
1906                             .oval = FIO_RAND_GEN_LFSR,
1907                             .help = "Variable length LFSR",
1908                           },
1909                           {
1910                             .ival = "tausworthe64",
1911                             .oval = FIO_RAND_GEN_TAUSWORTHE64,
1912                             .help = "64-bit Tausworthe variant",
1913                           },
1914                 },
1915                 .category = FIO_OPT_C_IO,
1916                 .group  = FIO_OPT_G_RANDOM,
1917         },
1918         {
1919                 .name   = "random_distribution",
1920                 .type   = FIO_OPT_STR,
1921                 .off1   = td_var_offset(random_distribution),
1922                 .cb     = str_random_distribution_cb,
1923                 .help   = "Random offset distribution generator",
1924                 .def    = "random",
1925                 .posval = {
1926                           { .ival = "random",
1927                             .oval = FIO_RAND_DIST_RANDOM,
1928                             .help = "Completely random",
1929                           },
1930                           { .ival = "zipf",
1931                             .oval = FIO_RAND_DIST_ZIPF,
1932                             .help = "Zipf distribution",
1933                           },
1934                           { .ival = "pareto",
1935                             .oval = FIO_RAND_DIST_PARETO,
1936                             .help = "Pareto distribution",
1937                           },
1938                           { .ival = "normal",
1939                             .oval = FIO_RAND_DIST_GAUSS,
1940                             .help = "Normal (gaussian) distribution",
1941                           },
1942                           { .ival = "zoned",
1943                             .oval = FIO_RAND_DIST_ZONED,
1944                             .help = "Zoned random distribution",
1945                           },
1946
1947                 },
1948                 .category = FIO_OPT_C_IO,
1949                 .group  = FIO_OPT_G_RANDOM,
1950         },
1951         {
1952                 .name   = "percentage_random",
1953                 .lname  = "Percentage Random",
1954                 .type   = FIO_OPT_INT,
1955                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1956                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1957                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1958                 .maxval = 100,
1959                 .help   = "Percentage of seq/random mix that should be random",
1960                 .def    = "100,100,100",
1961                 .interval = 5,
1962                 .inverse = "percentage_sequential",
1963                 .category = FIO_OPT_C_IO,
1964                 .group  = FIO_OPT_G_RANDOM,
1965         },
1966         {
1967                 .name   = "percentage_sequential",
1968                 .lname  = "Percentage Sequential",
1969                 .type   = FIO_OPT_DEPRECATED,
1970                 .category = FIO_OPT_C_IO,
1971                 .group  = FIO_OPT_G_RANDOM,
1972         },
1973         {
1974                 .name   = "allrandrepeat",
1975                 .type   = FIO_OPT_BOOL,
1976                 .off1   = td_var_offset(allrand_repeatable),
1977                 .help   = "Use repeatable random numbers for everything",
1978                 .def    = "0",
1979                 .category = FIO_OPT_C_IO,
1980                 .group  = FIO_OPT_G_RANDOM,
1981         },
1982         {
1983                 .name   = "nrfiles",
1984                 .lname  = "Number of files",
1985                 .alias  = "nr_files",
1986                 .type   = FIO_OPT_INT,
1987                 .off1   = td_var_offset(nr_files),
1988                 .help   = "Split job workload between this number of files",
1989                 .def    = "1",
1990                 .interval = 1,
1991                 .category = FIO_OPT_C_FILE,
1992                 .group  = FIO_OPT_G_INVALID,
1993         },
1994         {
1995                 .name   = "openfiles",
1996                 .lname  = "Number of open files",
1997                 .type   = FIO_OPT_INT,
1998                 .off1   = td_var_offset(open_files),
1999                 .help   = "Number of files to keep open at the same time",
2000                 .category = FIO_OPT_C_FILE,
2001                 .group  = FIO_OPT_G_INVALID,
2002         },
2003         {
2004                 .name   = "file_service_type",
2005                 .lname  = "File service type",
2006                 .type   = FIO_OPT_STR,
2007                 .cb     = str_fst_cb,
2008                 .off1   = td_var_offset(file_service_type),
2009                 .help   = "How to select which file to service next",
2010                 .def    = "roundrobin",
2011                 .category = FIO_OPT_C_FILE,
2012                 .group  = FIO_OPT_G_INVALID,
2013                 .posval = {
2014                           { .ival = "random",
2015                             .oval = FIO_FSERVICE_RANDOM,
2016                             .help = "Choose a file at random",
2017                           },
2018                           { .ival = "roundrobin",
2019                             .oval = FIO_FSERVICE_RR,
2020                             .help = "Round robin select files",
2021                           },
2022                           { .ival = "sequential",
2023                             .oval = FIO_FSERVICE_SEQ,
2024                             .help = "Finish one file before moving to the next",
2025                           },
2026                 },
2027                 .parent = "nrfiles",
2028                 .hide   = 1,
2029         },
2030 #ifdef CONFIG_POSIX_FALLOCATE
2031         {
2032                 .name   = "fallocate",
2033                 .lname  = "Fallocate",
2034                 .type   = FIO_OPT_STR,
2035                 .off1   = td_var_offset(fallocate_mode),
2036                 .help   = "Whether pre-allocation is performed when laying out files",
2037                 .def    = "posix",
2038                 .category = FIO_OPT_C_FILE,
2039                 .group  = FIO_OPT_G_INVALID,
2040                 .posval = {
2041                           { .ival = "none",
2042                             .oval = FIO_FALLOCATE_NONE,
2043                             .help = "Do not pre-allocate space",
2044                           },
2045                           { .ival = "posix",
2046                             .oval = FIO_FALLOCATE_POSIX,
2047                             .help = "Use posix_fallocate()",
2048                           },
2049 #ifdef CONFIG_LINUX_FALLOCATE
2050                           { .ival = "keep",
2051                             .oval = FIO_FALLOCATE_KEEP_SIZE,
2052                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
2053                           },
2054 #endif
2055                           /* Compatibility with former boolean values */
2056                           { .ival = "0",
2057                             .oval = FIO_FALLOCATE_NONE,
2058                             .help = "Alias for 'none'",
2059                           },
2060                           { .ival = "1",
2061                             .oval = FIO_FALLOCATE_POSIX,
2062                             .help = "Alias for 'posix'",
2063                           },
2064                 },
2065         },
2066 #endif  /* CONFIG_POSIX_FALLOCATE */
2067         {
2068                 .name   = "fadvise_hint",
2069                 .lname  = "Fadvise hint",
2070                 .type   = FIO_OPT_BOOL,
2071                 .off1   = td_var_offset(fadvise_hint),
2072                 .help   = "Use fadvise() to advise the kernel on IO pattern",
2073                 .def    = "1",
2074                 .category = FIO_OPT_C_FILE,
2075                 .group  = FIO_OPT_G_INVALID,
2076         },
2077 #ifdef FIO_HAVE_STREAMID
2078         {
2079                 .name   = "fadvise_stream",
2080                 .lname  = "Fadvise stream",
2081                 .type   = FIO_OPT_INT,
2082                 .off1   = td_var_offset(fadvise_stream),
2083                 .help   = "Use fadvise() to set stream ID",
2084                 .category = FIO_OPT_C_FILE,
2085                 .group  = FIO_OPT_G_INVALID,
2086         },
2087 #endif
2088         {
2089                 .name   = "fsync",
2090                 .lname  = "Fsync",
2091                 .type   = FIO_OPT_INT,
2092                 .off1   = td_var_offset(fsync_blocks),
2093                 .help   = "Issue fsync for writes every given number of blocks",
2094                 .def    = "0",
2095                 .interval = 1,
2096                 .category = FIO_OPT_C_FILE,
2097                 .group  = FIO_OPT_G_INVALID,
2098         },
2099         {
2100                 .name   = "fdatasync",
2101                 .lname  = "Fdatasync",
2102                 .type   = FIO_OPT_INT,
2103                 .off1   = td_var_offset(fdatasync_blocks),
2104                 .help   = "Issue fdatasync for writes every given number of blocks",
2105                 .def    = "0",
2106                 .interval = 1,
2107                 .category = FIO_OPT_C_FILE,
2108                 .group  = FIO_OPT_G_INVALID,
2109         },
2110         {
2111                 .name   = "write_barrier",
2112                 .lname  = "Write barrier",
2113                 .type   = FIO_OPT_INT,
2114                 .off1   = td_var_offset(barrier_blocks),
2115                 .help   = "Make every Nth write a barrier write",
2116                 .def    = "0",
2117                 .interval = 1,
2118                 .category = FIO_OPT_C_IO,
2119                 .group  = FIO_OPT_G_INVALID,
2120         },
2121 #ifdef CONFIG_SYNC_FILE_RANGE
2122         {
2123                 .name   = "sync_file_range",
2124                 .lname  = "Sync file range",
2125                 .posval = {
2126                           { .ival = "wait_before",
2127                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2128                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2129                             .orval  = 1,
2130                           },
2131                           { .ival = "write",
2132                             .oval = SYNC_FILE_RANGE_WRITE,
2133                             .help = "SYNC_FILE_RANGE_WRITE",
2134                             .orval  = 1,
2135                           },
2136                           {
2137                             .ival = "wait_after",
2138                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2139                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2140                             .orval  = 1,
2141                           },
2142                 },
2143                 .type   = FIO_OPT_STR_MULTI,
2144                 .cb     = str_sfr_cb,
2145                 .off1   = td_var_offset(sync_file_range),
2146                 .help   = "Use sync_file_range()",
2147                 .category = FIO_OPT_C_FILE,
2148                 .group  = FIO_OPT_G_INVALID,
2149         },
2150 #endif
2151         {
2152                 .name   = "direct",
2153                 .lname  = "Direct I/O",
2154                 .type   = FIO_OPT_BOOL,
2155                 .off1   = td_var_offset(odirect),
2156                 .help   = "Use O_DIRECT IO (negates buffered)",
2157                 .def    = "0",
2158                 .inverse = "buffered",
2159                 .category = FIO_OPT_C_IO,
2160                 .group  = FIO_OPT_G_IO_TYPE,
2161         },
2162         {
2163                 .name   = "atomic",
2164                 .lname  = "Atomic I/O",
2165                 .type   = FIO_OPT_BOOL,
2166                 .off1   = td_var_offset(oatomic),
2167                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2168                 .def    = "0",
2169                 .category = FIO_OPT_C_IO,
2170                 .group  = FIO_OPT_G_IO_TYPE,
2171         },
2172         {
2173                 .name   = "buffered",
2174                 .lname  = "Buffered I/O",
2175                 .type   = FIO_OPT_BOOL,
2176                 .off1   = td_var_offset(odirect),
2177                 .neg    = 1,
2178                 .help   = "Use buffered IO (negates direct)",
2179                 .def    = "1",
2180                 .inverse = "direct",
2181                 .category = FIO_OPT_C_IO,
2182                 .group  = FIO_OPT_G_IO_TYPE,
2183         },
2184         {
2185                 .name   = "overwrite",
2186                 .lname  = "Overwrite",
2187                 .type   = FIO_OPT_BOOL,
2188                 .off1   = td_var_offset(overwrite),
2189                 .help   = "When writing, set whether to overwrite current data",
2190                 .def    = "0",
2191                 .category = FIO_OPT_C_FILE,
2192                 .group  = FIO_OPT_G_INVALID,
2193         },
2194         {
2195                 .name   = "loops",
2196                 .lname  = "Loops",
2197                 .type   = FIO_OPT_INT,
2198                 .off1   = td_var_offset(loops),
2199                 .help   = "Number of times to run the job",
2200                 .def    = "1",
2201                 .interval = 1,
2202                 .category = FIO_OPT_C_GENERAL,
2203                 .group  = FIO_OPT_G_RUNTIME,
2204         },
2205         {
2206                 .name   = "numjobs",
2207                 .lname  = "Number of jobs",
2208                 .type   = FIO_OPT_INT,
2209                 .off1   = td_var_offset(numjobs),
2210                 .help   = "Duplicate this job this many times",
2211                 .def    = "1",
2212                 .interval = 1,
2213                 .category = FIO_OPT_C_GENERAL,
2214                 .group  = FIO_OPT_G_RUNTIME,
2215         },
2216         {
2217                 .name   = "startdelay",
2218                 .lname  = "Start delay",
2219                 .type   = FIO_OPT_STR_VAL_TIME,
2220                 .off1   = td_var_offset(start_delay),
2221                 .off2   = td_var_offset(start_delay_high),
2222                 .help   = "Only start job when this period has passed",
2223                 .def    = "0",
2224                 .is_seconds = 1,
2225                 .is_time = 1,
2226                 .category = FIO_OPT_C_GENERAL,
2227                 .group  = FIO_OPT_G_RUNTIME,
2228         },
2229         {
2230                 .name   = "runtime",
2231                 .lname  = "Runtime",
2232                 .alias  = "timeout",
2233                 .type   = FIO_OPT_STR_VAL_TIME,
2234                 .off1   = td_var_offset(timeout),
2235                 .help   = "Stop workload when this amount of time has passed",
2236                 .def    = "0",
2237                 .is_seconds = 1,
2238                 .is_time = 1,
2239                 .category = FIO_OPT_C_GENERAL,
2240                 .group  = FIO_OPT_G_RUNTIME,
2241         },
2242         {
2243                 .name   = "time_based",
2244                 .lname  = "Time based",
2245                 .type   = FIO_OPT_STR_SET,
2246                 .off1   = td_var_offset(time_based),
2247                 .help   = "Keep running until runtime/timeout is met",
2248                 .category = FIO_OPT_C_GENERAL,
2249                 .group  = FIO_OPT_G_RUNTIME,
2250         },
2251         {
2252                 .name   = "verify_only",
2253                 .lname  = "Verify only",
2254                 .type   = FIO_OPT_STR_SET,
2255                 .off1   = td_var_offset(verify_only),
2256                 .help   = "Verifies previously written data is still valid",
2257                 .category = FIO_OPT_C_GENERAL,
2258                 .group  = FIO_OPT_G_RUNTIME,
2259         },
2260         {
2261                 .name   = "ramp_time",
2262                 .lname  = "Ramp time",
2263                 .type   = FIO_OPT_STR_VAL_TIME,
2264                 .off1   = td_var_offset(ramp_time),
2265                 .help   = "Ramp up time before measuring performance",
2266                 .is_seconds = 1,
2267                 .is_time = 1,
2268                 .category = FIO_OPT_C_GENERAL,
2269                 .group  = FIO_OPT_G_RUNTIME,
2270         },
2271         {
2272                 .name   = "clocksource",
2273                 .lname  = "Clock source",
2274                 .type   = FIO_OPT_STR,
2275                 .cb     = fio_clock_source_cb,
2276                 .off1   = td_var_offset(clocksource),
2277                 .help   = "What type of timing source to use",
2278                 .category = FIO_OPT_C_GENERAL,
2279                 .group  = FIO_OPT_G_CLOCK,
2280                 .posval = {
2281 #ifdef CONFIG_GETTIMEOFDAY
2282                           { .ival = "gettimeofday",
2283                             .oval = CS_GTOD,
2284                             .help = "Use gettimeofday(2) for timing",
2285                           },
2286 #endif
2287 #ifdef CONFIG_CLOCK_GETTIME
2288                           { .ival = "clock_gettime",
2289                             .oval = CS_CGETTIME,
2290                             .help = "Use clock_gettime(2) for timing",
2291                           },
2292 #endif
2293 #ifdef ARCH_HAVE_CPU_CLOCK
2294                           { .ival = "cpu",
2295                             .oval = CS_CPUCLOCK,
2296                             .help = "Use CPU private clock",
2297                           },
2298 #endif
2299                 },
2300         },
2301         {
2302                 .name   = "mem",
2303                 .alias  = "iomem",
2304                 .lname  = "I/O Memory",
2305                 .type   = FIO_OPT_STR,
2306                 .cb     = str_mem_cb,
2307                 .off1   = td_var_offset(mem_type),
2308                 .help   = "Backing type for IO buffers",
2309                 .def    = "malloc",
2310                 .category = FIO_OPT_C_IO,
2311                 .group  = FIO_OPT_G_INVALID,
2312                 .posval = {
2313                           { .ival = "malloc",
2314                             .oval = MEM_MALLOC,
2315                             .help = "Use malloc(3) for IO buffers",
2316                           },
2317 #ifndef CONFIG_NO_SHM
2318                           { .ival = "shm",
2319                             .oval = MEM_SHM,
2320                             .help = "Use shared memory segments for IO buffers",
2321                           },
2322 #ifdef FIO_HAVE_HUGETLB
2323                           { .ival = "shmhuge",
2324                             .oval = MEM_SHMHUGE,
2325                             .help = "Like shm, but use huge pages",
2326                           },
2327 #endif
2328 #endif
2329                           { .ival = "mmap",
2330                             .oval = MEM_MMAP,
2331                             .help = "Use mmap(2) (file or anon) for IO buffers",
2332                           },
2333                           { .ival = "mmapshared",
2334                             .oval = MEM_MMAPSHARED,
2335                             .help = "Like mmap, but use the shared flag",
2336                           },
2337 #ifdef FIO_HAVE_HUGETLB
2338                           { .ival = "mmaphuge",
2339                             .oval = MEM_MMAPHUGE,
2340                             .help = "Like mmap, but use huge pages",
2341                           },
2342 #endif
2343                   },
2344         },
2345         {
2346                 .name   = "iomem_align",
2347                 .alias  = "mem_align",
2348                 .lname  = "I/O memory alignment",
2349                 .type   = FIO_OPT_INT,
2350                 .off1   = td_var_offset(mem_align),
2351                 .minval = 0,
2352                 .help   = "IO memory buffer offset alignment",
2353                 .def    = "0",
2354                 .parent = "iomem",
2355                 .hide   = 1,
2356                 .category = FIO_OPT_C_IO,
2357                 .group  = FIO_OPT_G_INVALID,
2358         },
2359         {
2360                 .name   = "verify",
2361                 .lname  = "Verify",
2362                 .type   = FIO_OPT_STR,
2363                 .off1   = td_var_offset(verify),
2364                 .help   = "Verify data written",
2365                 .def    = "0",
2366                 .category = FIO_OPT_C_IO,
2367                 .group  = FIO_OPT_G_VERIFY,
2368                 .posval = {
2369                           { .ival = "0",
2370                             .oval = VERIFY_NONE,
2371                             .help = "Don't do IO verification",
2372                           },
2373                           { .ival = "md5",
2374                             .oval = VERIFY_MD5,
2375                             .help = "Use md5 checksums for verification",
2376                           },
2377                           { .ival = "crc64",
2378                             .oval = VERIFY_CRC64,
2379                             .help = "Use crc64 checksums for verification",
2380                           },
2381                           { .ival = "crc32",
2382                             .oval = VERIFY_CRC32,
2383                             .help = "Use crc32 checksums for verification",
2384                           },
2385                           { .ival = "crc32c-intel",
2386                             .oval = VERIFY_CRC32C,
2387                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2388                           },
2389                           { .ival = "crc32c",
2390                             .oval = VERIFY_CRC32C,
2391                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2392                           },
2393                           { .ival = "crc16",
2394                             .oval = VERIFY_CRC16,
2395                             .help = "Use crc16 checksums for verification",
2396                           },
2397                           { .ival = "crc7",
2398                             .oval = VERIFY_CRC7,
2399                             .help = "Use crc7 checksums for verification",
2400                           },
2401                           { .ival = "sha1",
2402                             .oval = VERIFY_SHA1,
2403                             .help = "Use sha1 checksums for verification",
2404                           },
2405                           { .ival = "sha256",
2406                             .oval = VERIFY_SHA256,
2407                             .help = "Use sha256 checksums for verification",
2408                           },
2409                           { .ival = "sha512",
2410                             .oval = VERIFY_SHA512,
2411                             .help = "Use sha512 checksums for verification",
2412                           },
2413                           { .ival = "xxhash",
2414                             .oval = VERIFY_XXHASH,
2415                             .help = "Use xxhash checksums for verification",
2416                           },
2417                           /* Meta information was included into verify_header,
2418                            * 'meta' verification is implied by default. */
2419                           { .ival = "meta",
2420                             .oval = VERIFY_HDR_ONLY,
2421                             .help = "Use io information for verification. "
2422                                     "Now is implied by default, thus option is obsolete, "
2423                                     "don't use it",
2424                           },
2425                           { .ival = "pattern",
2426                             .oval = VERIFY_PATTERN_NO_HDR,
2427                             .help = "Verify strict pattern",
2428                           },
2429                           {
2430                             .ival = "null",
2431                             .oval = VERIFY_NULL,
2432                             .help = "Pretend to verify",
2433                           },
2434                 },
2435         },
2436         {
2437                 .name   = "do_verify",
2438                 .lname  = "Perform verify step",
2439                 .type   = FIO_OPT_BOOL,
2440                 .off1   = td_var_offset(do_verify),
2441                 .help   = "Run verification stage after write",
2442                 .def    = "1",
2443                 .parent = "verify",
2444                 .hide   = 1,
2445                 .category = FIO_OPT_C_IO,
2446                 .group  = FIO_OPT_G_VERIFY,
2447         },
2448         {
2449                 .name   = "verifysort",
2450                 .lname  = "Verify sort",
2451                 .type   = FIO_OPT_BOOL,
2452                 .off1   = td_var_offset(verifysort),
2453                 .help   = "Sort written verify blocks for read back",
2454                 .def    = "1",
2455                 .parent = "verify",
2456                 .hide   = 1,
2457                 .category = FIO_OPT_C_IO,
2458                 .group  = FIO_OPT_G_VERIFY,
2459         },
2460         {
2461                 .name   = "verifysort_nr",
2462                 .type   = FIO_OPT_INT,
2463                 .off1   = td_var_offset(verifysort_nr),
2464                 .help   = "Pre-load and sort verify blocks for a read workload",
2465                 .minval = 0,
2466                 .maxval = 131072,
2467                 .def    = "1024",
2468                 .parent = "verify",
2469                 .category = FIO_OPT_C_IO,
2470                 .group  = FIO_OPT_G_VERIFY,
2471         },
2472         {
2473                 .name   = "verify_interval",
2474                 .lname  = "Verify interval",
2475                 .type   = FIO_OPT_INT,
2476                 .off1   = td_var_offset(verify_interval),
2477                 .minval = 2 * sizeof(struct verify_header),
2478                 .help   = "Store verify buffer header every N bytes",
2479                 .parent = "verify",
2480                 .hide   = 1,
2481                 .interval = 2 * sizeof(struct verify_header),
2482                 .category = FIO_OPT_C_IO,
2483                 .group  = FIO_OPT_G_VERIFY,
2484         },
2485         {
2486                 .name   = "verify_offset",
2487                 .lname  = "Verify offset",
2488                 .type   = FIO_OPT_INT,
2489                 .help   = "Offset verify header location by N bytes",
2490                 .off1   = td_var_offset(verify_offset),
2491                 .minval = sizeof(struct verify_header),
2492                 .parent = "verify",
2493                 .hide   = 1,
2494                 .category = FIO_OPT_C_IO,
2495                 .group  = FIO_OPT_G_VERIFY,
2496         },
2497         {
2498                 .name   = "verify_pattern",
2499                 .lname  = "Verify pattern",
2500                 .type   = FIO_OPT_STR,
2501                 .cb     = str_verify_pattern_cb,
2502                 .off1   = td_var_offset(verify_pattern),
2503                 .help   = "Fill pattern for IO buffers",
2504                 .parent = "verify",
2505                 .hide   = 1,
2506                 .category = FIO_OPT_C_IO,
2507                 .group  = FIO_OPT_G_VERIFY,
2508         },
2509         {
2510                 .name   = "verify_fatal",
2511                 .lname  = "Verify fatal",
2512                 .type   = FIO_OPT_BOOL,
2513                 .off1   = td_var_offset(verify_fatal),
2514                 .def    = "0",
2515                 .help   = "Exit on a single verify failure, don't continue",
2516                 .parent = "verify",
2517                 .hide   = 1,
2518                 .category = FIO_OPT_C_IO,
2519                 .group  = FIO_OPT_G_VERIFY,
2520         },
2521         {
2522                 .name   = "verify_dump",
2523                 .lname  = "Verify dump",
2524                 .type   = FIO_OPT_BOOL,
2525                 .off1   = td_var_offset(verify_dump),
2526                 .def    = "0",
2527                 .help   = "Dump contents of good and bad blocks on failure",
2528                 .parent = "verify",
2529                 .hide   = 1,
2530                 .category = FIO_OPT_C_IO,
2531                 .group  = FIO_OPT_G_VERIFY,
2532         },
2533         {
2534                 .name   = "verify_async",
2535                 .lname  = "Verify asynchronously",
2536                 .type   = FIO_OPT_INT,
2537                 .off1   = td_var_offset(verify_async),
2538                 .def    = "0",
2539                 .help   = "Number of async verifier threads to use",
2540                 .parent = "verify",
2541                 .hide   = 1,
2542                 .category = FIO_OPT_C_IO,
2543                 .group  = FIO_OPT_G_VERIFY,
2544         },
2545         {
2546                 .name   = "verify_backlog",
2547                 .lname  = "Verify backlog",
2548                 .type   = FIO_OPT_STR_VAL,
2549                 .off1   = td_var_offset(verify_backlog),
2550                 .help   = "Verify after this number of blocks are written",
2551                 .parent = "verify",
2552                 .hide   = 1,
2553                 .category = FIO_OPT_C_IO,
2554                 .group  = FIO_OPT_G_VERIFY,
2555         },
2556         {
2557                 .name   = "verify_backlog_batch",
2558                 .lname  = "Verify backlog batch",
2559                 .type   = FIO_OPT_INT,
2560                 .off1   = td_var_offset(verify_batch),
2561                 .help   = "Verify this number of IO blocks",
2562                 .parent = "verify",
2563                 .hide   = 1,
2564                 .category = FIO_OPT_C_IO,
2565                 .group  = FIO_OPT_G_VERIFY,
2566         },
2567 #ifdef FIO_HAVE_CPU_AFFINITY
2568         {
2569                 .name   = "verify_async_cpus",
2570                 .lname  = "Async verify CPUs",
2571                 .type   = FIO_OPT_STR,
2572                 .cb     = str_verify_cpus_allowed_cb,
2573                 .off1   = td_var_offset(verify_cpumask),
2574                 .help   = "Set CPUs allowed for async verify threads",
2575                 .parent = "verify_async",
2576                 .hide   = 1,
2577                 .category = FIO_OPT_C_IO,
2578                 .group  = FIO_OPT_G_VERIFY,
2579         },
2580 #endif
2581         {
2582                 .name   = "experimental_verify",
2583                 .off1   = td_var_offset(experimental_verify),
2584                 .type   = FIO_OPT_BOOL,
2585                 .help   = "Enable experimental verification",
2586                 .parent = "verify",
2587                 .category = FIO_OPT_C_IO,
2588                 .group  = FIO_OPT_G_VERIFY,
2589         },
2590         {
2591                 .name   = "verify_state_load",
2592                 .lname  = "Load verify state",
2593                 .off1   = td_var_offset(verify_state),
2594                 .type   = FIO_OPT_BOOL,
2595                 .help   = "Load verify termination state",
2596                 .parent = "verify",
2597                 .category = FIO_OPT_C_IO,
2598                 .group  = FIO_OPT_G_VERIFY,
2599         },
2600         {
2601                 .name   = "verify_state_save",
2602                 .lname  = "Save verify state",
2603                 .off1   = td_var_offset(verify_state_save),
2604                 .type   = FIO_OPT_BOOL,
2605                 .def    = "1",
2606                 .help   = "Save verify state on termination",
2607                 .parent = "verify",
2608                 .category = FIO_OPT_C_IO,
2609                 .group  = FIO_OPT_G_VERIFY,
2610         },
2611 #ifdef FIO_HAVE_TRIM
2612         {
2613                 .name   = "trim_percentage",
2614                 .lname  = "Trim percentage",
2615                 .type   = FIO_OPT_INT,
2616                 .off1   = td_var_offset(trim_percentage),
2617                 .minval = 0,
2618                 .maxval = 100,
2619                 .help   = "Number of verify blocks to discard/trim",
2620                 .parent = "verify",
2621                 .def    = "0",
2622                 .interval = 1,
2623                 .hide   = 1,
2624                 .category = FIO_OPT_C_IO,
2625                 .group  = FIO_OPT_G_TRIM,
2626         },
2627         {
2628                 .name   = "trim_verify_zero",
2629                 .lname  = "Verify trim zero",
2630                 .type   = FIO_OPT_BOOL,
2631                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2632                 .off1   = td_var_offset(trim_zero),
2633                 .parent = "trim_percentage",
2634                 .hide   = 1,
2635                 .def    = "1",
2636                 .category = FIO_OPT_C_IO,
2637                 .group  = FIO_OPT_G_TRIM,
2638         },
2639         {
2640                 .name   = "trim_backlog",
2641                 .lname  = "Trim backlog",
2642                 .type   = FIO_OPT_STR_VAL,
2643                 .off1   = td_var_offset(trim_backlog),
2644                 .help   = "Trim after this number of blocks are written",
2645                 .parent = "trim_percentage",
2646                 .hide   = 1,
2647                 .interval = 1,
2648                 .category = FIO_OPT_C_IO,
2649                 .group  = FIO_OPT_G_TRIM,
2650         },
2651         {
2652                 .name   = "trim_backlog_batch",
2653                 .lname  = "Trim backlog batch",
2654                 .type   = FIO_OPT_INT,
2655                 .off1   = td_var_offset(trim_batch),
2656                 .help   = "Trim this number of IO blocks",
2657                 .parent = "trim_percentage",
2658                 .hide   = 1,
2659                 .interval = 1,
2660                 .category = FIO_OPT_C_IO,
2661                 .group  = FIO_OPT_G_TRIM,
2662         },
2663 #endif
2664         {
2665                 .name   = "write_iolog",
2666                 .lname  = "Write I/O log",
2667                 .type   = FIO_OPT_STR_STORE,
2668                 .off1   = td_var_offset(write_iolog_file),
2669                 .help   = "Store IO pattern to file",
2670                 .category = FIO_OPT_C_IO,
2671                 .group  = FIO_OPT_G_IOLOG,
2672         },
2673         {
2674                 .name   = "read_iolog",
2675                 .lname  = "Read I/O log",
2676                 .type   = FIO_OPT_STR_STORE,
2677                 .off1   = td_var_offset(read_iolog_file),
2678                 .help   = "Playback IO pattern from file",
2679                 .category = FIO_OPT_C_IO,
2680                 .group  = FIO_OPT_G_IOLOG,
2681         },
2682         {
2683                 .name   = "replay_no_stall",
2684                 .lname  = "Don't stall on replay",
2685                 .type   = FIO_OPT_BOOL,
2686                 .off1   = td_var_offset(no_stall),
2687                 .def    = "0",
2688                 .parent = "read_iolog",
2689                 .hide   = 1,
2690                 .help   = "Playback IO pattern file as fast as possible without stalls",
2691                 .category = FIO_OPT_C_IO,
2692                 .group  = FIO_OPT_G_IOLOG,
2693         },
2694         {
2695                 .name   = "replay_redirect",
2696                 .lname  = "Redirect device for replay",
2697                 .type   = FIO_OPT_STR_STORE,
2698                 .off1   = td_var_offset(replay_redirect),
2699                 .parent = "read_iolog",
2700                 .hide   = 1,
2701                 .help   = "Replay all I/O onto this device, regardless of trace device",
2702                 .category = FIO_OPT_C_IO,
2703                 .group  = FIO_OPT_G_IOLOG,
2704         },
2705         {
2706                 .name   = "replay_scale",
2707                 .lname  = "Replace offset scale factor",
2708                 .type   = FIO_OPT_INT,
2709                 .off1   = td_var_offset(replay_scale),
2710                 .parent = "read_iolog",
2711                 .def    = "1",
2712                 .help   = "Align offsets to this blocksize",
2713                 .category = FIO_OPT_C_IO,
2714                 .group  = FIO_OPT_G_IOLOG,
2715         },
2716         {
2717                 .name   = "replay_align",
2718                 .lname  = "Replace alignment",
2719                 .type   = FIO_OPT_INT,
2720                 .off1   = td_var_offset(replay_align),
2721                 .parent = "read_iolog",
2722                 .help   = "Scale offset down by this factor",
2723                 .category = FIO_OPT_C_IO,
2724                 .group  = FIO_OPT_G_IOLOG,
2725                 .pow2   = 1,
2726         },
2727         {
2728                 .name   = "exec_prerun",
2729                 .lname  = "Pre-execute runnable",
2730                 .type   = FIO_OPT_STR_STORE,
2731                 .off1   = td_var_offset(exec_prerun),
2732                 .help   = "Execute this file prior to running job",
2733                 .category = FIO_OPT_C_GENERAL,
2734                 .group  = FIO_OPT_G_INVALID,
2735         },
2736         {
2737                 .name   = "exec_postrun",
2738                 .lname  = "Post-execute runnable",
2739                 .type   = FIO_OPT_STR_STORE,
2740                 .off1   = td_var_offset(exec_postrun),
2741                 .help   = "Execute this file after running job",
2742                 .category = FIO_OPT_C_GENERAL,
2743                 .group  = FIO_OPT_G_INVALID,
2744         },
2745 #ifdef FIO_HAVE_IOSCHED_SWITCH
2746         {
2747                 .name   = "ioscheduler",
2748                 .lname  = "I/O scheduler",
2749                 .type   = FIO_OPT_STR_STORE,
2750                 .off1   = td_var_offset(ioscheduler),
2751                 .help   = "Use this IO scheduler on the backing device",
2752                 .category = FIO_OPT_C_FILE,
2753                 .group  = FIO_OPT_G_INVALID,
2754         },
2755 #endif
2756         {
2757                 .name   = "zonesize",
2758                 .lname  = "Zone size",
2759                 .type   = FIO_OPT_STR_VAL,
2760                 .off1   = td_var_offset(zone_size),
2761                 .help   = "Amount of data to read per zone",
2762                 .def    = "0",
2763                 .interval = 1024 * 1024,
2764                 .category = FIO_OPT_C_IO,
2765                 .group  = FIO_OPT_G_ZONE,
2766         },
2767         {
2768                 .name   = "zonerange",
2769                 .lname  = "Zone range",
2770                 .type   = FIO_OPT_STR_VAL,
2771                 .off1   = td_var_offset(zone_range),
2772                 .help   = "Give size of an IO zone",
2773                 .def    = "0",
2774                 .interval = 1024 * 1024,
2775                 .category = FIO_OPT_C_IO,
2776                 .group  = FIO_OPT_G_ZONE,
2777         },
2778         {
2779                 .name   = "zoneskip",
2780                 .lname  = "Zone skip",
2781                 .type   = FIO_OPT_STR_VAL,
2782                 .off1   = td_var_offset(zone_skip),
2783                 .help   = "Space between IO zones",
2784                 .def    = "0",
2785                 .interval = 1024 * 1024,
2786                 .category = FIO_OPT_C_IO,
2787                 .group  = FIO_OPT_G_ZONE,
2788         },
2789         {
2790                 .name   = "lockmem",
2791                 .lname  = "Lock memory",
2792                 .type   = FIO_OPT_STR_VAL,
2793                 .off1   = td_var_offset(lockmem),
2794                 .help   = "Lock down this amount of memory (per worker)",
2795                 .def    = "0",
2796                 .interval = 1024 * 1024,
2797                 .category = FIO_OPT_C_GENERAL,
2798                 .group  = FIO_OPT_G_INVALID,
2799         },
2800         {
2801                 .name   = "rwmixread",
2802                 .lname  = "Read/write mix read",
2803                 .type   = FIO_OPT_INT,
2804                 .cb     = str_rwmix_read_cb,
2805                 .off1   = td_var_offset(rwmix[DDIR_READ]),
2806                 .maxval = 100,
2807                 .help   = "Percentage of mixed workload that is reads",
2808                 .def    = "50",
2809                 .interval = 5,
2810                 .inverse = "rwmixwrite",
2811                 .category = FIO_OPT_C_IO,
2812                 .group  = FIO_OPT_G_RWMIX,
2813         },
2814         {
2815                 .name   = "rwmixwrite",
2816                 .lname  = "Read/write mix write",
2817                 .type   = FIO_OPT_INT,
2818                 .cb     = str_rwmix_write_cb,
2819                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
2820                 .maxval = 100,
2821                 .help   = "Percentage of mixed workload that is writes",
2822                 .def    = "50",
2823                 .interval = 5,
2824                 .inverse = "rwmixread",
2825                 .category = FIO_OPT_C_IO,
2826                 .group  = FIO_OPT_G_RWMIX,
2827         },
2828         {
2829                 .name   = "rwmixcycle",
2830                 .lname  = "Read/write mix cycle",
2831                 .type   = FIO_OPT_DEPRECATED,
2832                 .category = FIO_OPT_C_IO,
2833                 .group  = FIO_OPT_G_RWMIX,
2834         },
2835         {
2836                 .name   = "nice",
2837                 .lname  = "Nice",
2838                 .type   = FIO_OPT_INT,
2839                 .off1   = td_var_offset(nice),
2840                 .help   = "Set job CPU nice value",
2841                 .minval = -19,
2842                 .maxval = 20,
2843                 .def    = "0",
2844                 .interval = 1,
2845                 .category = FIO_OPT_C_GENERAL,
2846                 .group  = FIO_OPT_G_CRED,
2847         },
2848 #ifdef FIO_HAVE_IOPRIO
2849         {
2850                 .name   = "prio",
2851                 .lname  = "I/O nice priority",
2852                 .type   = FIO_OPT_INT,
2853                 .off1   = td_var_offset(ioprio),
2854                 .help   = "Set job IO priority value",
2855                 .minval = 0,
2856                 .maxval = 7,
2857                 .interval = 1,
2858                 .category = FIO_OPT_C_GENERAL,
2859                 .group  = FIO_OPT_G_CRED,
2860         },
2861         {
2862                 .name   = "prioclass",
2863                 .lname  = "I/O nice priority class",
2864                 .type   = FIO_OPT_INT,
2865                 .off1   = td_var_offset(ioprio_class),
2866                 .help   = "Set job IO priority class",
2867                 .minval = 0,
2868                 .maxval = 3,
2869                 .interval = 1,
2870                 .category = FIO_OPT_C_GENERAL,
2871                 .group  = FIO_OPT_G_CRED,
2872         },
2873 #endif
2874         {
2875                 .name   = "thinktime",
2876                 .lname  = "Thinktime",
2877                 .type   = FIO_OPT_INT,
2878                 .off1   = td_var_offset(thinktime),
2879                 .help   = "Idle time between IO buffers (usec)",
2880                 .def    = "0",
2881                 .is_time = 1,
2882                 .category = FIO_OPT_C_IO,
2883                 .group  = FIO_OPT_G_THINKTIME,
2884         },
2885         {
2886                 .name   = "thinktime_spin",
2887                 .lname  = "Thinktime spin",
2888                 .type   = FIO_OPT_INT,
2889                 .off1   = td_var_offset(thinktime_spin),
2890                 .help   = "Start think time by spinning this amount (usec)",
2891                 .def    = "0",
2892                 .is_time = 1,
2893                 .parent = "thinktime",
2894                 .hide   = 1,
2895                 .category = FIO_OPT_C_IO,
2896                 .group  = FIO_OPT_G_THINKTIME,
2897         },
2898         {
2899                 .name   = "thinktime_blocks",
2900                 .lname  = "Thinktime blocks",
2901                 .type   = FIO_OPT_INT,
2902                 .off1   = td_var_offset(thinktime_blocks),
2903                 .help   = "IO buffer period between 'thinktime'",
2904                 .def    = "1",
2905                 .parent = "thinktime",
2906                 .hide   = 1,
2907                 .category = FIO_OPT_C_IO,
2908                 .group  = FIO_OPT_G_THINKTIME,
2909         },
2910         {
2911                 .name   = "rate",
2912                 .lname  = "I/O rate",
2913                 .type   = FIO_OPT_INT,
2914                 .off1   = td_var_offset(rate[DDIR_READ]),
2915                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2916                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2917                 .help   = "Set bandwidth rate",
2918                 .category = FIO_OPT_C_IO,
2919                 .group  = FIO_OPT_G_RATE,
2920         },
2921         {
2922                 .name   = "rate_min",
2923                 .alias  = "ratemin",
2924                 .lname  = "I/O min rate",
2925                 .type   = FIO_OPT_INT,
2926                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2927                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2928                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2929                 .help   = "Job must meet this rate or it will be shutdown",
2930                 .parent = "rate",
2931                 .hide   = 1,
2932                 .category = FIO_OPT_C_IO,
2933                 .group  = FIO_OPT_G_RATE,
2934         },
2935         {
2936                 .name   = "rate_iops",
2937                 .lname  = "I/O rate IOPS",
2938                 .type   = FIO_OPT_INT,
2939                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2940                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2941                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2942                 .help   = "Limit IO used to this number of IO operations/sec",
2943                 .hide   = 1,
2944                 .category = FIO_OPT_C_IO,
2945                 .group  = FIO_OPT_G_RATE,
2946         },
2947         {
2948                 .name   = "rate_iops_min",
2949                 .lname  = "I/O min rate IOPS",
2950                 .type   = FIO_OPT_INT,
2951                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2952                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2953                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2954                 .help   = "Job must meet this rate or it will be shut down",
2955                 .parent = "rate_iops",
2956                 .hide   = 1,
2957                 .category = FIO_OPT_C_IO,
2958                 .group  = FIO_OPT_G_RATE,
2959         },
2960         {
2961                 .name   = "rate_process",
2962                 .lname  = "Rate Process",
2963                 .type   = FIO_OPT_STR,
2964                 .off1   = td_var_offset(rate_process),
2965                 .help   = "What process controls how rated IO is managed",
2966                 .def    = "linear",
2967                 .category = FIO_OPT_C_IO,
2968                 .group  = FIO_OPT_G_RATE,
2969                 .posval = {
2970                           { .ival = "linear",
2971                             .oval = RATE_PROCESS_LINEAR,
2972                             .help = "Linear rate of IO",
2973                           },
2974                           {
2975                             .ival = "poisson",
2976                             .oval = RATE_PROCESS_POISSON,
2977                             .help = "Rate follows Poisson process",
2978                           },
2979                 },
2980                 .parent = "rate",
2981         },
2982         {
2983                 .name   = "rate_cycle",
2984                 .alias  = "ratecycle",
2985                 .lname  = "I/O rate cycle",
2986                 .type   = FIO_OPT_INT,
2987                 .off1   = td_var_offset(ratecycle),
2988                 .help   = "Window average for rate limits (msec)",
2989                 .def    = "1000",
2990                 .parent = "rate",
2991                 .hide   = 1,
2992                 .category = FIO_OPT_C_IO,
2993                 .group  = FIO_OPT_G_RATE,
2994         },
2995         {
2996                 .name   = "max_latency",
2997                 .type   = FIO_OPT_INT,
2998                 .off1   = td_var_offset(max_latency),
2999                 .help   = "Maximum tolerated IO latency (usec)",
3000                 .is_time = 1,
3001                 .category = FIO_OPT_C_IO,
3002                 .group = FIO_OPT_G_LATPROF,
3003         },
3004         {
3005                 .name   = "latency_target",
3006                 .lname  = "Latency Target (usec)",
3007                 .type   = FIO_OPT_STR_VAL_TIME,
3008                 .off1   = td_var_offset(latency_target),
3009                 .help   = "Ramp to max queue depth supporting this latency",
3010                 .is_time = 1,
3011                 .category = FIO_OPT_C_IO,
3012                 .group  = FIO_OPT_G_LATPROF,
3013         },
3014         {
3015                 .name   = "latency_window",
3016                 .lname  = "Latency Window (usec)",
3017                 .type   = FIO_OPT_STR_VAL_TIME,
3018                 .off1   = td_var_offset(latency_window),
3019                 .help   = "Time to sustain latency_target",
3020                 .is_time = 1,
3021                 .category = FIO_OPT_C_IO,
3022                 .group  = FIO_OPT_G_LATPROF,
3023         },
3024         {
3025                 .name   = "latency_percentile",
3026                 .lname  = "Latency Percentile",
3027                 .type   = FIO_OPT_FLOAT_LIST,
3028                 .off1   = td_var_offset(latency_percentile),
3029                 .help   = "Percentile of IOs must be below latency_target",
3030                 .def    = "100",
3031                 .maxlen = 1,
3032                 .minfp  = 0.0,
3033                 .maxfp  = 100.0,
3034                 .category = FIO_OPT_C_IO,
3035                 .group  = FIO_OPT_G_LATPROF,
3036         },
3037         {
3038                 .name   = "invalidate",
3039                 .lname  = "Cache invalidate",
3040                 .type   = FIO_OPT_BOOL,
3041                 .off1   = td_var_offset(invalidate_cache),
3042                 .help   = "Invalidate buffer/page cache prior to running job",
3043                 .def    = "1",
3044                 .category = FIO_OPT_C_IO,
3045                 .group  = FIO_OPT_G_IO_TYPE,
3046         },
3047         {
3048                 .name   = "sync",
3049                 .lname  = "Synchronous I/O",
3050                 .type   = FIO_OPT_BOOL,
3051                 .off1   = td_var_offset(sync_io),
3052                 .help   = "Use O_SYNC for buffered writes",
3053                 .def    = "0",
3054                 .parent = "buffered",
3055                 .hide   = 1,
3056                 .category = FIO_OPT_C_IO,
3057                 .group  = FIO_OPT_G_IO_TYPE,
3058         },
3059         {
3060                 .name   = "create_serialize",
3061                 .lname  = "Create serialize",
3062                 .type   = FIO_OPT_BOOL,
3063                 .off1   = td_var_offset(create_serialize),
3064                 .help   = "Serialize creating of job files",
3065                 .def    = "1",
3066                 .category = FIO_OPT_C_FILE,
3067                 .group  = FIO_OPT_G_INVALID,
3068         },
3069         {
3070                 .name   = "create_fsync",
3071                 .lname  = "Create fsync",
3072                 .type   = FIO_OPT_BOOL,
3073                 .off1   = td_var_offset(create_fsync),
3074                 .help   = "fsync file after creation",
3075                 .def    = "1",
3076                 .category = FIO_OPT_C_FILE,
3077                 .group  = FIO_OPT_G_INVALID,
3078         },
3079         {
3080                 .name   = "create_on_open",
3081                 .lname  = "Create on open",
3082                 .type   = FIO_OPT_BOOL,
3083                 .off1   = td_var_offset(create_on_open),
3084                 .help   = "Create files when they are opened for IO",
3085                 .def    = "0",
3086                 .category = FIO_OPT_C_FILE,
3087                 .group  = FIO_OPT_G_INVALID,
3088         },
3089         {
3090                 .name   = "create_only",
3091                 .type   = FIO_OPT_BOOL,
3092                 .off1   = td_var_offset(create_only),
3093                 .help   = "Only perform file creation phase",
3094                 .category = FIO_OPT_C_FILE,
3095                 .def    = "0",
3096         },
3097         {
3098                 .name   = "allow_file_create",
3099                 .lname  = "Allow file create",
3100                 .type   = FIO_OPT_BOOL,
3101                 .off1   = td_var_offset(allow_create),
3102                 .help   = "Permit fio to create files, if they don't exist",
3103                 .def    = "1",
3104                 .category = FIO_OPT_C_FILE,
3105                 .group  = FIO_OPT_G_FILENAME,
3106         },
3107         {
3108                 .name   = "allow_mounted_write",
3109                 .lname  = "Allow mounted write",
3110                 .type   = FIO_OPT_BOOL,
3111                 .off1   = td_var_offset(allow_mounted_write),
3112                 .help   = "Allow writes to a mounted partition",
3113                 .def    = "0",
3114                 .category = FIO_OPT_C_FILE,
3115                 .group  = FIO_OPT_G_FILENAME,
3116         },
3117         {
3118                 .name   = "pre_read",
3119                 .lname  = "Pre-read files",
3120                 .type   = FIO_OPT_BOOL,
3121                 .off1   = td_var_offset(pre_read),
3122                 .help   = "Pre-read files before starting official testing",
3123                 .def    = "0",
3124                 .category = FIO_OPT_C_FILE,
3125                 .group  = FIO_OPT_G_INVALID,
3126         },
3127 #ifdef FIO_HAVE_CPU_AFFINITY
3128         {
3129                 .name   = "cpumask",
3130                 .lname  = "CPU mask",
3131                 .type   = FIO_OPT_INT,
3132                 .cb     = str_cpumask_cb,
3133                 .off1   = td_var_offset(cpumask),
3134                 .help   = "CPU affinity mask",
3135                 .category = FIO_OPT_C_GENERAL,
3136                 .group  = FIO_OPT_G_CRED,
3137         },
3138         {
3139                 .name   = "cpus_allowed",
3140                 .lname  = "CPUs allowed",
3141                 .type   = FIO_OPT_STR,
3142                 .cb     = str_cpus_allowed_cb,
3143                 .off1   = td_var_offset(cpumask),
3144                 .help   = "Set CPUs allowed",
3145                 .category = FIO_OPT_C_GENERAL,
3146                 .group  = FIO_OPT_G_CRED,
3147         },
3148         {
3149                 .name   = "cpus_allowed_policy",
3150                 .lname  = "CPUs allowed distribution policy",
3151                 .type   = FIO_OPT_STR,
3152                 .off1   = td_var_offset(cpus_allowed_policy),
3153                 .help   = "Distribution policy for cpus_allowed",
3154                 .parent = "cpus_allowed",
3155                 .prio   = 1,
3156                 .posval = {
3157                           { .ival = "shared",
3158                             .oval = FIO_CPUS_SHARED,
3159                             .help = "Mask shared between threads",
3160                           },
3161                           { .ival = "split",
3162                             .oval = FIO_CPUS_SPLIT,
3163                             .help = "Mask split between threads",
3164                           },
3165                 },
3166                 .category = FIO_OPT_C_GENERAL,
3167                 .group  = FIO_OPT_G_CRED,
3168         },
3169 #endif
3170 #ifdef CONFIG_LIBNUMA
3171         {
3172                 .name   = "numa_cpu_nodes",
3173                 .type   = FIO_OPT_STR,
3174                 .cb     = str_numa_cpunodes_cb,
3175                 .off1   = td_var_offset(numa_cpunodes),
3176                 .help   = "NUMA CPU nodes bind",
3177                 .category = FIO_OPT_C_GENERAL,
3178                 .group  = FIO_OPT_G_INVALID,
3179         },
3180         {
3181                 .name   = "numa_mem_policy",
3182                 .type   = FIO_OPT_STR,
3183                 .cb     = str_numa_mpol_cb,
3184                 .off1   = td_var_offset(numa_memnodes),
3185                 .help   = "NUMA memory policy setup",
3186                 .category = FIO_OPT_C_GENERAL,
3187                 .group  = FIO_OPT_G_INVALID,
3188         },
3189 #endif
3190         {
3191                 .name   = "end_fsync",
3192                 .lname  = "End fsync",
3193                 .type   = FIO_OPT_BOOL,
3194                 .off1   = td_var_offset(end_fsync),
3195                 .help   = "Include fsync at the end of job",
3196                 .def    = "0",
3197                 .category = FIO_OPT_C_FILE,
3198                 .group  = FIO_OPT_G_INVALID,
3199         },
3200         {
3201                 .name   = "fsync_on_close",
3202                 .lname  = "Fsync on close",
3203                 .type   = FIO_OPT_BOOL,
3204                 .off1   = td_var_offset(fsync_on_close),
3205                 .help   = "fsync files on close",
3206                 .def    = "0",
3207                 .category = FIO_OPT_C_FILE,
3208                 .group  = FIO_OPT_G_INVALID,
3209         },
3210         {
3211                 .name   = "unlink",
3212                 .lname  = "Unlink file",
3213                 .type   = FIO_OPT_BOOL,
3214                 .off1   = td_var_offset(unlink),
3215                 .help   = "Unlink created files after job has completed",
3216                 .def    = "0",
3217                 .category = FIO_OPT_C_FILE,
3218                 .group  = FIO_OPT_G_INVALID,
3219         },
3220         {
3221                 .name   = "exitall",
3222                 .lname  = "Exit-all on terminate",
3223                 .type   = FIO_OPT_STR_SET,
3224                 .cb     = str_exitall_cb,
3225                 .help   = "Terminate all jobs when one exits",
3226                 .category = FIO_OPT_C_GENERAL,
3227                 .group  = FIO_OPT_G_PROCESS,
3228         },
3229         {
3230                 .name   = "exitall_on_error",
3231                 .lname  = "Exit-all on terminate in error",
3232                 .type   = FIO_OPT_BOOL,
3233                 .off1   = td_var_offset(unlink),
3234                 .help   = "Terminate all jobs when one exits in error",
3235                 .category = FIO_OPT_C_GENERAL,
3236                 .group  = FIO_OPT_G_PROCESS,
3237         },
3238         {
3239                 .name   = "stonewall",
3240                 .lname  = "Wait for previous",
3241                 .alias  = "wait_for_previous",
3242                 .type   = FIO_OPT_STR_SET,
3243                 .off1   = td_var_offset(stonewall),
3244                 .help   = "Insert a hard barrier between this job and previous",
3245                 .category = FIO_OPT_C_GENERAL,
3246                 .group  = FIO_OPT_G_PROCESS,
3247         },
3248         {
3249                 .name   = "new_group",
3250                 .lname  = "New group",
3251                 .type   = FIO_OPT_STR_SET,
3252                 .off1   = td_var_offset(new_group),
3253                 .help   = "Mark the start of a new group (for reporting)",
3254                 .category = FIO_OPT_C_GENERAL,
3255                 .group  = FIO_OPT_G_PROCESS,
3256         },
3257         {
3258                 .name   = "thread",
3259                 .lname  = "Thread",
3260                 .type   = FIO_OPT_STR_SET,
3261                 .off1   = td_var_offset(use_thread),
3262                 .help   = "Use threads instead of processes",
3263 #ifdef CONFIG_NO_SHM
3264                 .def    = "1",
3265                 .no_warn_def = 1,
3266 #endif
3267                 .category = FIO_OPT_C_GENERAL,
3268                 .group  = FIO_OPT_G_PROCESS,
3269         },
3270         {
3271                 .name   = "per_job_logs",
3272                 .type   = FIO_OPT_BOOL,
3273                 .off1   = td_var_offset(per_job_logs),
3274                 .help   = "Include job number in generated log files or not",
3275                 .def    = "1",
3276                 .category = FIO_OPT_C_LOG,
3277                 .group  = FIO_OPT_G_INVALID,
3278         },
3279         {
3280                 .name   = "write_bw_log",
3281                 .lname  = "Write bandwidth log",
3282                 .type   = FIO_OPT_STR_STORE,
3283                 .off1   = td_var_offset(bw_log_file),
3284                 .help   = "Write log of bandwidth during run",
3285                 .category = FIO_OPT_C_LOG,
3286                 .group  = FIO_OPT_G_INVALID,
3287         },
3288         {
3289                 .name   = "write_lat_log",
3290                 .lname  = "Write latency log",
3291                 .type   = FIO_OPT_STR_STORE,
3292                 .off1   = td_var_offset(lat_log_file),
3293                 .help   = "Write log of latency during run",
3294                 .category = FIO_OPT_C_LOG,
3295                 .group  = FIO_OPT_G_INVALID,
3296         },
3297         {
3298                 .name   = "write_iops_log",
3299                 .lname  = "Write IOPS log",
3300                 .type   = FIO_OPT_STR_STORE,
3301                 .off1   = td_var_offset(iops_log_file),
3302                 .help   = "Write log of IOPS during run",
3303                 .category = FIO_OPT_C_LOG,
3304                 .group  = FIO_OPT_G_INVALID,
3305         },
3306         {
3307                 .name   = "log_avg_msec",
3308                 .lname  = "Log averaging (msec)",
3309                 .type   = FIO_OPT_INT,
3310                 .off1   = td_var_offset(log_avg_msec),
3311                 .help   = "Average bw/iops/lat logs over this period of time",
3312                 .def    = "0",
3313                 .category = FIO_OPT_C_LOG,
3314                 .group  = FIO_OPT_G_INVALID,
3315         },
3316         {
3317                 .name   = "log_max_value",
3318                 .lname  = "Log maximum instead of average",
3319                 .type   = FIO_OPT_BOOL,
3320                 .off1   = td_var_offset(log_max),
3321                 .help   = "Log max sample in a window instead of average",
3322                 .def    = "0",
3323                 .category = FIO_OPT_C_LOG,
3324                 .group  = FIO_OPT_G_INVALID,
3325         },
3326         {
3327                 .name   = "log_offset",
3328                 .lname  = "Log offset of IO",
3329                 .type   = FIO_OPT_BOOL,
3330                 .off1   = td_var_offset(log_offset),
3331                 .help   = "Include offset of IO for each log entry",
3332                 .def    = "0",
3333                 .category = FIO_OPT_C_LOG,
3334                 .group  = FIO_OPT_G_INVALID,
3335         },
3336 #ifdef CONFIG_ZLIB
3337         {
3338                 .name   = "log_compression",
3339                 .lname  = "Log compression",
3340                 .type   = FIO_OPT_INT,
3341                 .off1   = td_var_offset(log_gz),
3342                 .help   = "Log in compressed chunks of this size",
3343                 .minval = 1024ULL,
3344                 .maxval = 512 * 1024 * 1024ULL,
3345                 .category = FIO_OPT_C_LOG,
3346                 .group  = FIO_OPT_G_INVALID,
3347         },
3348 #ifdef FIO_HAVE_CPU_AFFINITY
3349         {
3350                 .name   = "log_compression_cpus",
3351                 .lname  = "Log Compression CPUs",
3352                 .type   = FIO_OPT_STR,
3353                 .cb     = str_log_cpus_allowed_cb,
3354                 .off1   = td_var_offset(log_gz_cpumask),
3355                 .parent = "log_compression",
3356                 .help   = "Limit log compression to these CPUs",
3357                 .category = FIO_OPT_C_LOG,
3358                 .group  = FIO_OPT_G_INVALID,
3359         },
3360 #endif
3361         {
3362                 .name   = "log_store_compressed",
3363                 .lname  = "Log store compressed",
3364                 .type   = FIO_OPT_BOOL,
3365                 .off1   = td_var_offset(log_gz_store),
3366                 .help   = "Store logs in a compressed format",
3367                 .category = FIO_OPT_C_LOG,
3368                 .group  = FIO_OPT_G_INVALID,
3369         },
3370 #endif
3371         {
3372                 .name   = "block_error_percentiles",
3373                 .lname  = "Block error percentiles",
3374                 .type   = FIO_OPT_BOOL,
3375                 .off1   = td_var_offset(block_error_hist),
3376                 .help   = "Record trim block errors and make a histogram",
3377                 .def    = "0",
3378                 .category = FIO_OPT_C_LOG,
3379                 .group  = FIO_OPT_G_INVALID,
3380         },
3381         {
3382                 .name   = "bwavgtime",
3383                 .lname  = "Bandwidth average time",
3384                 .type   = FIO_OPT_INT,
3385                 .off1   = td_var_offset(bw_avg_time),
3386                 .help   = "Time window over which to calculate bandwidth"
3387                           " (msec)",
3388                 .def    = "500",
3389                 .parent = "write_bw_log",
3390                 .hide   = 1,
3391                 .interval = 100,
3392                 .category = FIO_OPT_C_LOG,
3393                 .group  = FIO_OPT_G_INVALID,
3394         },
3395         {
3396                 .name   = "iopsavgtime",
3397                 .lname  = "IOPS average time",
3398                 .type   = FIO_OPT_INT,
3399                 .off1   = td_var_offset(iops_avg_time),
3400                 .help   = "Time window over which to calculate IOPS (msec)",
3401                 .def    = "500",
3402                 .parent = "write_iops_log",
3403                 .hide   = 1,
3404                 .interval = 100,
3405                 .category = FIO_OPT_C_LOG,
3406                 .group  = FIO_OPT_G_INVALID,
3407         },
3408         {
3409                 .name   = "group_reporting",
3410                 .lname  = "Group reporting",
3411                 .type   = FIO_OPT_STR_SET,
3412                 .off1   = td_var_offset(group_reporting),
3413                 .help   = "Do reporting on a per-group basis",
3414                 .category = FIO_OPT_C_STAT,
3415                 .group  = FIO_OPT_G_INVALID,
3416         },
3417         {
3418                 .name   = "zero_buffers",
3419                 .lname  = "Zero I/O buffers",
3420                 .type   = FIO_OPT_STR_SET,
3421                 .off1   = td_var_offset(zero_buffers),
3422                 .help   = "Init IO buffers to all zeroes",
3423                 .category = FIO_OPT_C_IO,
3424                 .group  = FIO_OPT_G_IO_BUF,
3425         },
3426         {
3427                 .name   = "refill_buffers",
3428                 .lname  = "Refill I/O buffers",
3429                 .type   = FIO_OPT_STR_SET,
3430                 .off1   = td_var_offset(refill_buffers),
3431                 .help   = "Refill IO buffers on every IO submit",
3432                 .category = FIO_OPT_C_IO,
3433                 .group  = FIO_OPT_G_IO_BUF,
3434         },
3435         {
3436                 .name   = "scramble_buffers",
3437                 .lname  = "Scramble I/O buffers",
3438                 .type   = FIO_OPT_BOOL,
3439                 .off1   = td_var_offset(scramble_buffers),
3440                 .help   = "Slightly scramble buffers on every IO submit",
3441                 .def    = "1",
3442                 .category = FIO_OPT_C_IO,
3443                 .group  = FIO_OPT_G_IO_BUF,
3444         },
3445         {
3446                 .name   = "buffer_pattern",
3447                 .lname  = "Buffer pattern",
3448                 .type   = FIO_OPT_STR,
3449                 .cb     = str_buffer_pattern_cb,
3450                 .off1   = td_var_offset(buffer_pattern),
3451                 .help   = "Fill pattern for IO buffers",
3452                 .category = FIO_OPT_C_IO,
3453                 .group  = FIO_OPT_G_IO_BUF,
3454         },
3455         {
3456                 .name   = "buffer_compress_percentage",
3457                 .lname  = "Buffer compression percentage",
3458                 .type   = FIO_OPT_INT,
3459                 .cb     = str_buffer_compress_cb,
3460                 .off1   = td_var_offset(compress_percentage),
3461                 .maxval = 100,
3462                 .minval = 0,
3463                 .help   = "How compressible the buffer is (approximately)",
3464                 .interval = 5,
3465                 .category = FIO_OPT_C_IO,
3466                 .group  = FIO_OPT_G_IO_BUF,
3467         },
3468         {
3469                 .name   = "buffer_compress_chunk",
3470                 .lname  = "Buffer compression chunk size",
3471                 .type   = FIO_OPT_INT,
3472                 .off1   = td_var_offset(compress_chunk),
3473                 .parent = "buffer_compress_percentage",
3474                 .hide   = 1,
3475                 .help   = "Size of compressible region in buffer",
3476                 .interval = 256,
3477                 .category = FIO_OPT_C_IO,
3478                 .group  = FIO_OPT_G_IO_BUF,
3479         },
3480         {
3481                 .name   = "dedupe_percentage",
3482                 .lname  = "Dedupe percentage",
3483                 .type   = FIO_OPT_INT,
3484                 .cb     = str_dedupe_cb,
3485                 .off1   = td_var_offset(dedupe_percentage),
3486                 .maxval = 100,
3487                 .minval = 0,
3488                 .help   = "Percentage of buffers that are dedupable",
3489                 .interval = 1,
3490                 .category = FIO_OPT_C_IO,
3491                 .group  = FIO_OPT_G_IO_BUF,
3492         },
3493         {
3494                 .name   = "clat_percentiles",
3495                 .lname  = "Completion latency percentiles",
3496                 .type   = FIO_OPT_BOOL,
3497                 .off1   = td_var_offset(clat_percentiles),
3498                 .help   = "Enable the reporting of completion latency percentiles",
3499                 .def    = "1",
3500                 .category = FIO_OPT_C_STAT,
3501                 .group  = FIO_OPT_G_INVALID,
3502         },
3503         {
3504                 .name   = "percentile_list",
3505                 .lname  = "Percentile list",
3506                 .type   = FIO_OPT_FLOAT_LIST,
3507                 .off1   = td_var_offset(percentile_list),
3508                 .off2   = td_var_offset(percentile_precision),
3509                 .help   = "Specify a custom list of percentiles to report for "
3510                           "completion latency and block errors",
3511                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3512                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3513                 .minfp  = 0.0,
3514                 .maxfp  = 100.0,
3515                 .category = FIO_OPT_C_STAT,
3516                 .group  = FIO_OPT_G_INVALID,
3517         },
3518
3519 #ifdef FIO_HAVE_DISK_UTIL
3520         {
3521                 .name   = "disk_util",
3522                 .lname  = "Disk utilization",
3523                 .type   = FIO_OPT_BOOL,
3524                 .off1   = td_var_offset(do_disk_util),
3525                 .help   = "Log disk utilization statistics",
3526                 .def    = "1",
3527                 .category = FIO_OPT_C_STAT,
3528                 .group  = FIO_OPT_G_INVALID,
3529         },
3530 #endif
3531         {
3532                 .name   = "gtod_reduce",
3533                 .lname  = "Reduce gettimeofday() calls",
3534                 .type   = FIO_OPT_BOOL,
3535                 .help   = "Greatly reduce number of gettimeofday() calls",
3536                 .cb     = str_gtod_reduce_cb,
3537                 .def    = "0",
3538                 .hide_on_set = 1,
3539                 .category = FIO_OPT_C_STAT,
3540                 .group  = FIO_OPT_G_INVALID,
3541         },
3542         {
3543                 .name   = "disable_lat",
3544                 .lname  = "Disable all latency stats",
3545                 .type   = FIO_OPT_BOOL,
3546                 .off1   = td_var_offset(disable_lat),
3547                 .help   = "Disable latency numbers",
3548                 .parent = "gtod_reduce",
3549                 .hide   = 1,
3550                 .def    = "0",
3551                 .category = FIO_OPT_C_STAT,
3552                 .group  = FIO_OPT_G_INVALID,
3553         },
3554         {
3555                 .name   = "disable_clat",
3556                 .lname  = "Disable completion latency stats",
3557                 .type   = FIO_OPT_BOOL,
3558                 .off1   = td_var_offset(disable_clat),
3559                 .help   = "Disable completion latency numbers",
3560                 .parent = "gtod_reduce",
3561                 .hide   = 1,
3562                 .def    = "0",
3563                 .category = FIO_OPT_C_STAT,
3564                 .group  = FIO_OPT_G_INVALID,
3565         },
3566         {
3567                 .name   = "disable_slat",
3568                 .lname  = "Disable submission latency stats",
3569                 .type   = FIO_OPT_BOOL,
3570                 .off1   = td_var_offset(disable_slat),
3571                 .help   = "Disable submission latency numbers",
3572                 .parent = "gtod_reduce",
3573                 .hide   = 1,
3574                 .def    = "0",
3575                 .category = FIO_OPT_C_STAT,
3576                 .group  = FIO_OPT_G_INVALID,
3577         },
3578         {
3579                 .name   = "disable_bw_measurement",
3580                 .lname  = "Disable bandwidth stats",
3581                 .type   = FIO_OPT_BOOL,
3582                 .off1   = td_var_offset(disable_bw),
3583                 .help   = "Disable bandwidth logging",
3584                 .parent = "gtod_reduce",
3585                 .hide   = 1,
3586                 .def    = "0",
3587                 .category = FIO_OPT_C_STAT,
3588                 .group  = FIO_OPT_G_INVALID,
3589         },
3590         {
3591                 .name   = "gtod_cpu",
3592                 .lname  = "Dedicated gettimeofday() CPU",
3593                 .type   = FIO_OPT_INT,
3594                 .off1   = td_var_offset(gtod_cpu),
3595                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3596                 .verify = gtod_cpu_verify,
3597                 .category = FIO_OPT_C_GENERAL,
3598                 .group  = FIO_OPT_G_CLOCK,
3599         },
3600         {
3601                 .name   = "unified_rw_reporting",
3602                 .type   = FIO_OPT_BOOL,
3603                 .off1   = td_var_offset(unified_rw_rep),
3604                 .help   = "Unify reporting across data direction",
3605                 .def    = "0",
3606                 .category = FIO_OPT_C_GENERAL,
3607                 .group  = FIO_OPT_G_INVALID,
3608         },
3609         {
3610                 .name   = "continue_on_error",
3611                 .lname  = "Continue on error",
3612                 .type   = FIO_OPT_STR,
3613                 .off1   = td_var_offset(continue_on_error),
3614                 .help   = "Continue on non-fatal errors during IO",
3615                 .def    = "none",
3616                 .category = FIO_OPT_C_GENERAL,
3617                 .group  = FIO_OPT_G_ERR,
3618                 .posval = {
3619                           { .ival = "none",
3620                             .oval = ERROR_TYPE_NONE,
3621                             .help = "Exit when an error is encountered",
3622                           },
3623                           { .ival = "read",
3624                             .oval = ERROR_TYPE_READ,
3625                             .help = "Continue on read errors only",
3626                           },
3627                           { .ival = "write",
3628                             .oval = ERROR_TYPE_WRITE,
3629                             .help = "Continue on write errors only",
3630                           },
3631                           { .ival = "io",
3632                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3633                             .help = "Continue on any IO errors",
3634                           },
3635                           { .ival = "verify",
3636                             .oval = ERROR_TYPE_VERIFY,
3637                             .help = "Continue on verify errors only",
3638                           },
3639                           { .ival = "all",
3640                             .oval = ERROR_TYPE_ANY,
3641                             .help = "Continue on all io and verify errors",
3642                           },
3643                           { .ival = "0",
3644                             .oval = ERROR_TYPE_NONE,
3645                             .help = "Alias for 'none'",
3646                           },
3647                           { .ival = "1",
3648                             .oval = ERROR_TYPE_ANY,
3649                             .help = "Alias for 'all'",
3650                           },
3651                 },
3652         },
3653         {
3654                 .name   = "ignore_error",
3655                 .type   = FIO_OPT_STR,
3656                 .cb     = str_ignore_error_cb,
3657                 .off1   = td_var_offset(ignore_error_nr),
3658                 .help   = "Set a specific list of errors to ignore",
3659                 .parent = "rw",
3660                 .category = FIO_OPT_C_GENERAL,
3661                 .group  = FIO_OPT_G_ERR,
3662         },
3663         {
3664                 .name   = "error_dump",
3665                 .type   = FIO_OPT_BOOL,
3666                 .off1   = td_var_offset(error_dump),
3667                 .def    = "0",
3668                 .help   = "Dump info on each error",
3669                 .category = FIO_OPT_C_GENERAL,
3670                 .group  = FIO_OPT_G_ERR,
3671         },
3672         {
3673                 .name   = "profile",
3674                 .lname  = "Profile",
3675                 .type   = FIO_OPT_STR_STORE,
3676                 .off1   = td_var_offset(profile),
3677                 .help   = "Select a specific builtin performance test",
3678                 .category = FIO_OPT_C_PROFILE,
3679                 .group  = FIO_OPT_G_INVALID,
3680         },
3681         {
3682                 .name   = "cgroup",
3683                 .lname  = "Cgroup",
3684                 .type   = FIO_OPT_STR_STORE,
3685                 .off1   = td_var_offset(cgroup),
3686                 .help   = "Add job to cgroup of this name",
3687                 .category = FIO_OPT_C_GENERAL,
3688                 .group  = FIO_OPT_G_CGROUP,
3689         },
3690         {
3691                 .name   = "cgroup_nodelete",
3692                 .lname  = "Cgroup no-delete",
3693                 .type   = FIO_OPT_BOOL,
3694                 .off1   = td_var_offset(cgroup_nodelete),
3695                 .help   = "Do not delete cgroups after job completion",
3696                 .def    = "0",
3697                 .parent = "cgroup",
3698                 .category = FIO_OPT_C_GENERAL,
3699                 .group  = FIO_OPT_G_CGROUP,
3700         },
3701         {
3702                 .name   = "cgroup_weight",
3703                 .lname  = "Cgroup weight",
3704                 .type   = FIO_OPT_INT,
3705                 .off1   = td_var_offset(cgroup_weight),
3706                 .help   = "Use given weight for cgroup",
3707                 .minval = 100,
3708                 .maxval = 1000,
3709                 .parent = "cgroup",
3710                 .category = FIO_OPT_C_GENERAL,
3711                 .group  = FIO_OPT_G_CGROUP,
3712         },
3713         {
3714                 .name   = "uid",
3715                 .lname  = "User ID",
3716                 .type   = FIO_OPT_INT,
3717                 .off1   = td_var_offset(uid),
3718                 .help   = "Run job with this user ID",
3719                 .category = FIO_OPT_C_GENERAL,
3720                 .group  = FIO_OPT_G_CRED,
3721         },
3722         {
3723                 .name   = "gid",
3724                 .lname  = "Group ID",
3725                 .type   = FIO_OPT_INT,
3726                 .off1   = td_var_offset(gid),
3727                 .help   = "Run job with this group ID",
3728                 .category = FIO_OPT_C_GENERAL,
3729                 .group  = FIO_OPT_G_CRED,
3730         },
3731         {
3732                 .name   = "kb_base",
3733                 .lname  = "KB Base",
3734                 .type   = FIO_OPT_INT,
3735                 .off1   = td_var_offset(kb_base),
3736                 .prio   = 1,
3737                 .def    = "1024",
3738                 .posval = {
3739                           { .ival = "1024",
3740                             .oval = 1024,
3741                             .help = "Use 1024 as the K base",
3742                           },
3743                           { .ival = "1000",
3744                             .oval = 1000,
3745                             .help = "Use 1000 as the K base",
3746                           },
3747                 },
3748                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3749                 .category = FIO_OPT_C_GENERAL,
3750                 .group  = FIO_OPT_G_INVALID,
3751         },
3752         {
3753                 .name   = "unit_base",
3754                 .lname  = "Base unit for reporting (Bits or Bytes)",
3755                 .type   = FIO_OPT_INT,
3756                 .off1   = td_var_offset(unit_base),
3757                 .prio   = 1,
3758                 .posval = {
3759                           { .ival = "0",
3760                             .oval = 0,
3761                             .help = "Auto-detect",
3762                           },
3763                           { .ival = "8",
3764                             .oval = 8,
3765                             .help = "Normal (byte based)",
3766                           },
3767                           { .ival = "1",
3768                             .oval = 1,
3769                             .help = "Bit based",
3770                           },
3771                 },
3772                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3773                 .category = FIO_OPT_C_GENERAL,
3774                 .group  = FIO_OPT_G_INVALID,
3775         },
3776         {
3777                 .name   = "hugepage-size",
3778                 .lname  = "Hugepage size",
3779                 .type   = FIO_OPT_INT,
3780                 .off1   = td_var_offset(hugepage_size),
3781                 .help   = "When using hugepages, specify size of each page",
3782                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3783                 .interval = 1024 * 1024,
3784                 .category = FIO_OPT_C_GENERAL,
3785                 .group  = FIO_OPT_G_INVALID,
3786         },
3787         {
3788                 .name   = "flow_id",
3789                 .lname  = "I/O flow ID",
3790                 .type   = FIO_OPT_INT,
3791                 .off1   = td_var_offset(flow_id),
3792                 .help   = "The flow index ID to use",
3793                 .def    = "0",
3794                 .category = FIO_OPT_C_IO,
3795                 .group  = FIO_OPT_G_IO_FLOW,
3796         },
3797         {
3798                 .name   = "flow",
3799                 .lname  = "I/O flow weight",
3800                 .type   = FIO_OPT_INT,
3801                 .off1   = td_var_offset(flow),
3802                 .help   = "Weight for flow control of this job",
3803                 .parent = "flow_id",
3804                 .hide   = 1,
3805                 .def    = "0",
3806                 .category = FIO_OPT_C_IO,
3807                 .group  = FIO_OPT_G_IO_FLOW,
3808         },
3809         {
3810                 .name   = "flow_watermark",
3811                 .lname  = "I/O flow watermark",
3812                 .type   = FIO_OPT_INT,
3813                 .off1   = td_var_offset(flow_watermark),
3814                 .help   = "High watermark for flow control. This option"
3815                         " should be set to the same value for all threads"
3816                         " with non-zero flow.",
3817                 .parent = "flow_id",
3818                 .hide   = 1,
3819                 .def    = "1024",
3820                 .category = FIO_OPT_C_IO,
3821                 .group  = FIO_OPT_G_IO_FLOW,
3822         },
3823         {
3824                 .name   = "flow_sleep",
3825                 .lname  = "I/O flow sleep",
3826                 .type   = FIO_OPT_INT,
3827                 .off1   = td_var_offset(flow_sleep),
3828                 .help   = "How many microseconds to sleep after being held"
3829                         " back by the flow control mechanism",
3830                 .parent = "flow_id",
3831                 .hide   = 1,
3832                 .def    = "0",
3833                 .category = FIO_OPT_C_IO,
3834                 .group  = FIO_OPT_G_IO_FLOW,
3835         },
3836         {
3837                 .name   = "skip_bad",
3838                 .lname  = "Skip operations against bad blocks",
3839                 .type   = FIO_OPT_BOOL,
3840                 .off1   = td_var_offset(skip_bad),
3841                 .help   = "Skip operations against known bad blocks.",
3842                 .hide   = 1,
3843                 .def    = "0",
3844                 .category = FIO_OPT_C_IO,
3845                 .group  = FIO_OPT_G_MTD,
3846         },
3847         {
3848                 .name = NULL,
3849         },
3850 };
3851
3852 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3853                         const char *name, int val)
3854 {
3855         lopt->name = (char *) name;
3856         lopt->val = val;
3857         if (o->type == FIO_OPT_STR_SET)
3858                 lopt->has_arg = optional_argument;
3859         else
3860                 lopt->has_arg = required_argument;
3861 }
3862
3863 static void options_to_lopts(struct fio_option *opts,
3864                               struct option *long_options,
3865                               int i, int option_type)
3866 {
3867         struct fio_option *o = &opts[0];
3868         while (o->name) {
3869                 add_to_lopt(&long_options[i], o, o->name, option_type);
3870                 if (o->alias) {
3871                         i++;
3872                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3873                 }
3874
3875                 i++;
3876                 o++;
3877                 assert(i < FIO_NR_OPTIONS);
3878         }
3879 }
3880
3881 void fio_options_set_ioengine_opts(struct option *long_options,
3882                                    struct thread_data *td)
3883 {
3884         unsigned int i;
3885
3886         i = 0;
3887         while (long_options[i].name) {
3888                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3889                         memset(&long_options[i], 0, sizeof(*long_options));
3890                         break;
3891                 }
3892                 i++;
3893         }
3894
3895         /*
3896          * Just clear out the prior ioengine options.
3897          */
3898         if (!td || !td->eo)
3899                 return;
3900
3901         options_to_lopts(td->io_ops->options, long_options, i,
3902                          FIO_GETOPT_IOENGINE);
3903 }
3904
3905 void fio_options_dup_and_init(struct option *long_options)
3906 {
3907         unsigned int i;
3908
3909         options_init(fio_options);
3910
3911         i = 0;
3912         while (long_options[i].name)
3913                 i++;
3914
3915         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3916 }
3917
3918 struct fio_keyword {
3919         const char *word;
3920         const char *desc;
3921         char *replace;
3922 };
3923
3924 static struct fio_keyword fio_keywords[] = {
3925         {
3926                 .word   = "$pagesize",
3927                 .desc   = "Page size in the system",
3928         },
3929         {
3930                 .word   = "$mb_memory",
3931                 .desc   = "Megabytes of memory online",
3932         },
3933         {
3934                 .word   = "$ncpus",
3935                 .desc   = "Number of CPUs online in the system",
3936         },
3937         {
3938                 .word   = NULL,
3939         },
3940 };
3941
3942 void fio_keywords_exit(void)
3943 {
3944         struct fio_keyword *kw;
3945
3946         kw = &fio_keywords[0];
3947         while (kw->word) {
3948                 free(kw->replace);
3949                 kw->replace = NULL;
3950                 kw++;
3951         }
3952 }
3953
3954 void fio_keywords_init(void)
3955 {
3956         unsigned long long mb_memory;
3957         char buf[128];
3958         long l;
3959
3960         sprintf(buf, "%lu", (unsigned long) page_size);
3961         fio_keywords[0].replace = strdup(buf);
3962
3963         mb_memory = os_phys_mem() / (1024 * 1024);
3964         sprintf(buf, "%llu", mb_memory);
3965         fio_keywords[1].replace = strdup(buf);
3966
3967         l = cpus_online();
3968         sprintf(buf, "%lu", l);
3969         fio_keywords[2].replace = strdup(buf);
3970 }
3971
3972 #define BC_APP          "bc"
3973
3974 static char *bc_calc(char *str)
3975 {
3976         char buf[128], *tmp;
3977         FILE *f;
3978         int ret;
3979
3980         /*
3981          * No math, just return string
3982          */
3983         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3984              !strchr(str, '/')) || strchr(str, '\''))
3985                 return str;
3986
3987         /*
3988          * Split option from value, we only need to calculate the value
3989          */
3990         tmp = strchr(str, '=');
3991         if (!tmp)
3992                 return str;
3993
3994         tmp++;
3995
3996         /*
3997          * Prevent buffer overflows; such a case isn't reasonable anyway
3998          */
3999         if (strlen(str) >= 128 || strlen(tmp) > 100)
4000                 return str;
4001
4002         sprintf(buf, "which %s > /dev/null", BC_APP);
4003         if (system(buf)) {
4004                 log_err("fio: bc is needed for performing math\n");
4005                 return NULL;
4006         }
4007
4008         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
4009         f = popen(buf, "r");
4010         if (!f)
4011                 return NULL;
4012
4013         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
4014         if (ret <= 0) {
4015                 pclose(f);
4016                 return NULL;
4017         }
4018
4019         pclose(f);
4020         buf[(tmp - str) + ret - 1] = '\0';
4021         memcpy(buf, str, tmp - str);
4022         free(str);
4023         return strdup(buf);
4024 }
4025
4026 /*
4027  * Return a copy of the input string with substrings of the form ${VARNAME}
4028  * substituted with the value of the environment variable VARNAME.  The
4029  * substitution always occurs, even if VARNAME is empty or the corresponding
4030  * environment variable undefined.
4031  */
4032 static char *option_dup_subs(const char *opt)
4033 {
4034         char out[OPT_LEN_MAX+1];
4035         char in[OPT_LEN_MAX+1];
4036         char *outptr = out;
4037         char *inptr = in;
4038         char *ch1, *ch2, *env;
4039         ssize_t nchr = OPT_LEN_MAX;
4040         size_t envlen;
4041
4042         if (strlen(opt) + 1 > OPT_LEN_MAX) {
4043                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
4044                 return NULL;
4045         }
4046
4047         in[OPT_LEN_MAX] = '\0';
4048         strncpy(in, opt, OPT_LEN_MAX);
4049
4050         while (*inptr && nchr > 0) {
4051                 if (inptr[0] == '$' && inptr[1] == '{') {
4052                         ch2 = strchr(inptr, '}');
4053                         if (ch2 && inptr+1 < ch2) {
4054                                 ch1 = inptr+2;
4055                                 inptr = ch2+1;
4056                                 *ch2 = '\0';
4057
4058                                 env = getenv(ch1);
4059                                 if (env) {
4060                                         envlen = strlen(env);
4061                                         if (envlen <= nchr) {
4062                                                 memcpy(outptr, env, envlen);
4063                                                 outptr += envlen;
4064                                                 nchr -= envlen;
4065                                         }
4066                                 }
4067
4068                                 continue;
4069                         }
4070                 }
4071
4072                 *outptr++ = *inptr++;
4073                 --nchr;
4074         }
4075
4076         *outptr = '\0';
4077         return strdup(out);
4078 }
4079
4080 /*
4081  * Look for reserved variable names and replace them with real values
4082  */
4083 static char *fio_keyword_replace(char *opt)
4084 {
4085         char *s;
4086         int i;
4087         int docalc = 0;
4088
4089         for (i = 0; fio_keywords[i].word != NULL; i++) {
4090                 struct fio_keyword *kw = &fio_keywords[i];
4091
4092                 while ((s = strstr(opt, kw->word)) != NULL) {
4093                         char *new = malloc(strlen(opt) + 1);
4094                         char *o_org = opt;
4095                         int olen = s - opt;
4096                         int len;
4097
4098                         /*
4099                          * Copy part of the string before the keyword and
4100                          * sprintf() the replacement after it.
4101                          */
4102                         memcpy(new, opt, olen);
4103                         len = sprintf(new + olen, "%s", kw->replace);
4104
4105                         /*
4106                          * If there's more in the original string, copy that
4107                          * in too
4108                          */
4109                         opt += strlen(kw->word) + olen;
4110                         if (strlen(opt))
4111                                 memcpy(new + olen + len, opt, opt - o_org - 1);
4112
4113                         /*
4114                          * replace opt and free the old opt
4115                          */
4116                         opt = new;
4117                         free(o_org);
4118
4119                         docalc = 1;
4120                 }
4121         }
4122
4123         /*
4124          * Check for potential math and invoke bc, if possible
4125          */
4126         if (docalc)
4127                 opt = bc_calc(opt);
4128
4129         return opt;
4130 }
4131
4132 static char **dup_and_sub_options(char **opts, int num_opts)
4133 {
4134         int i;
4135         char **opts_copy = malloc(num_opts * sizeof(*opts));
4136         for (i = 0; i < num_opts; i++) {
4137                 opts_copy[i] = option_dup_subs(opts[i]);
4138                 if (!opts_copy[i])
4139                         continue;
4140                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
4141         }
4142         return opts_copy;
4143 }
4144
4145 static void show_closest_option(const char *opt)
4146 {
4147         int best_option, best_distance;
4148         int i, distance;
4149         char *name;
4150
4151         if (!strlen(opt))
4152                 return;
4153
4154         name = strdup(opt);
4155         i = 0;
4156         while (name[i] != '\0' && name[i] != '=')
4157                 i++;
4158         name[i] = '\0';
4159
4160         best_option = -1;
4161         best_distance = INT_MAX;
4162         i = 0;
4163         while (fio_options[i].name) {
4164                 distance = string_distance(name, fio_options[i].name);
4165                 if (distance < best_distance) {
4166                         best_distance = distance;
4167                         best_option = i;
4168                 }
4169                 i++;
4170         }
4171
4172         if (best_option != -1 && string_distance_ok(name, best_distance))
4173                 log_err("Did you mean %s?\n", fio_options[best_option].name);
4174
4175         free(name);
4176 }
4177
4178 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
4179 {
4180         int i, ret, unknown;
4181         char **opts_copy;
4182
4183         sort_options(opts, fio_options, num_opts);
4184         opts_copy = dup_and_sub_options(opts, num_opts);
4185
4186         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
4187                 struct fio_option *o;
4188                 int newret = parse_option(opts_copy[i], opts[i], fio_options,
4189                                                 &o, td, &td->opt_list);
4190
4191                 if (!newret && o)
4192                         fio_option_mark_set(&td->o, o);
4193
4194                 if (opts_copy[i]) {
4195                         if (newret && !o) {
4196                                 unknown++;
4197                                 continue;
4198                         }
4199                         free(opts_copy[i]);
4200                         opts_copy[i] = NULL;
4201                 }
4202
4203                 ret |= newret;
4204         }
4205
4206         if (unknown) {
4207                 ret |= ioengine_load(td);
4208                 if (td->eo) {
4209                         sort_options(opts_copy, td->io_ops->options, num_opts);
4210                         opts = opts_copy;
4211                 }
4212                 for (i = 0; i < num_opts; i++) {
4213                         struct fio_option *o = NULL;
4214                         int newret = 1;
4215
4216                         if (!opts_copy[i])
4217                                 continue;
4218
4219                         if (td->eo)
4220                                 newret = parse_option(opts_copy[i], opts[i],
4221                                                       td->io_ops->options, &o,
4222                                                       td->eo, &td->opt_list);
4223
4224                         ret |= newret;
4225                         if (!o) {
4226                                 log_err("Bad option <%s>\n", opts[i]);
4227                                 show_closest_option(opts[i]);
4228                         }
4229                         free(opts_copy[i]);
4230                         opts_copy[i] = NULL;
4231                 }
4232         }
4233
4234         free(opts_copy);
4235         return ret;
4236 }
4237
4238 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
4239 {
4240         int ret;
4241
4242         ret = parse_cmd_option(opt, val, fio_options, td, &td->opt_list);
4243         if (!ret) {
4244                 struct fio_option *o;
4245
4246                 o = find_option(fio_options, opt);
4247                 if (o)
4248                         fio_option_mark_set(&td->o, o);
4249         }
4250
4251         return ret;
4252 }
4253
4254 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
4255                                 char *val)
4256 {
4257         return parse_cmd_option(opt, val, td->io_ops->options, td->eo,
4258                                         &td->opt_list);
4259 }
4260
4261 void fio_fill_default_options(struct thread_data *td)
4262 {
4263         td->o.magic = OPT_MAGIC;
4264         fill_default_options(td, fio_options);
4265 }
4266
4267 int fio_show_option_help(const char *opt)
4268 {
4269         return show_cmd_help(fio_options, opt);
4270 }
4271
4272 void options_mem_dupe(void *data, struct fio_option *options)
4273 {
4274         struct fio_option *o;
4275         char **ptr;
4276
4277         for (o = &options[0]; o->name; o++) {
4278                 if (o->type != FIO_OPT_STR_STORE)
4279                         continue;
4280
4281                 ptr = td_var(data, o, o->off1);
4282                 if (*ptr)
4283                         *ptr = strdup(*ptr);
4284         }
4285 }
4286
4287 /*
4288  * dupe FIO_OPT_STR_STORE options
4289  */
4290 void fio_options_mem_dupe(struct thread_data *td)
4291 {
4292         options_mem_dupe(&td->o, fio_options);
4293
4294         if (td->eo && td->io_ops) {
4295                 void *oldeo = td->eo;
4296
4297                 td->eo = malloc(td->io_ops->option_struct_size);
4298                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
4299                 options_mem_dupe(td->eo, td->io_ops->options);
4300         }
4301 }
4302
4303 unsigned int fio_get_kb_base(void *data)
4304 {
4305         struct thread_options *o = data;
4306         unsigned int kb_base = 0;
4307
4308         /*
4309          * This is a hack... For private options, *data is not holding
4310          * a pointer to the thread_options, but to private data. This means
4311          * we can't safely dereference it, but magic is first so mem wise
4312          * it is valid. But this also means that if the job first sets
4313          * kb_base and expects that to be honored by private options,
4314          * it will be disappointed. We will return the global default
4315          * for this.
4316          */
4317         if (o && o->magic == OPT_MAGIC)
4318                 kb_base = o->kb_base;
4319         if (!kb_base)
4320                 kb_base = 1024;
4321
4322         return kb_base;
4323 }
4324
4325 int add_option(struct fio_option *o)
4326 {
4327         struct fio_option *__o;
4328         int opt_index = 0;
4329
4330         __o = fio_options;
4331         while (__o->name) {
4332                 opt_index++;
4333                 __o++;
4334         }
4335
4336         if (opt_index + 1 == FIO_MAX_OPTS) {
4337                 log_err("fio: FIO_MAX_OPTS is too small\n");
4338                 return 1;
4339         }
4340
4341         memcpy(&fio_options[opt_index], o, sizeof(*o));
4342         fio_options[opt_index + 1].name = NULL;
4343         return 0;
4344 }
4345
4346 void invalidate_profile_options(const char *prof_name)
4347 {
4348         struct fio_option *o;
4349
4350         o = fio_options;
4351         while (o->name) {
4352                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
4353                         o->type = FIO_OPT_INVALID;
4354                         o->prof_name = NULL;
4355                 }
4356                 o++;
4357         }
4358 }
4359
4360 void add_opt_posval(const char *optname, const char *ival, const char *help)
4361 {
4362         struct fio_option *o;
4363         unsigned int i;
4364
4365         o = find_option(fio_options, optname);
4366         if (!o)
4367                 return;
4368
4369         for (i = 0; i < PARSE_MAX_VP; i++) {
4370                 if (o->posval[i].ival)
4371                         continue;
4372
4373                 o->posval[i].ival = ival;
4374                 o->posval[i].help = help;
4375                 break;
4376         }
4377 }
4378
4379 void del_opt_posval(const char *optname, const char *ival)
4380 {
4381         struct fio_option *o;
4382         unsigned int i;
4383
4384         o = find_option(fio_options, optname);
4385         if (!o)
4386                 return;
4387
4388         for (i = 0; i < PARSE_MAX_VP; i++) {
4389                 if (!o->posval[i].ival)
4390                         continue;
4391                 if (strcmp(o->posval[i].ival, ival))
4392                         continue;
4393
4394                 o->posval[i].ival = NULL;
4395                 o->posval[i].help = NULL;
4396         }
4397 }
4398
4399 void fio_options_free(struct thread_data *td)
4400 {
4401         options_free(fio_options, td);
4402         if (td->eo && td->io_ops && td->io_ops->options) {
4403                 options_free(td->io_ops->options, td->eo);
4404                 free(td->eo);
4405                 td->eo = NULL;
4406         }
4407 }
4408
4409 struct fio_option *fio_option_find(const char *name)
4410 {
4411         return find_option(fio_options, name);
4412 }
4413
4414 static struct fio_option *find_next_opt(struct thread_options *o,
4415                                         struct fio_option *from,
4416                                         unsigned int off1)
4417 {
4418         struct fio_option *opt;
4419
4420         if (!from)
4421                 from = &fio_options[0];
4422         else
4423                 from++;
4424
4425         opt = NULL;
4426         do {
4427                 if (off1 == from->off1) {
4428                         opt = from;
4429                         break;
4430                 }
4431                 from++;
4432         } while (from->name);
4433
4434         return opt;
4435 }
4436
4437 static int opt_is_set(struct thread_options *o, struct fio_option *opt)
4438 {
4439         unsigned int opt_off, index, offset;
4440
4441         opt_off = opt - &fio_options[0];
4442         index = opt_off / (8 * sizeof(uint64_t));
4443         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4444         return (o->set_options[index] & ((uint64_t)1 << offset)) != 0;
4445 }
4446
4447 bool __fio_option_is_set(struct thread_options *o, unsigned int off1)
4448 {
4449         struct fio_option *opt, *next;
4450
4451         next = NULL;
4452         while ((opt = find_next_opt(o, next, off1)) != NULL) {
4453                 if (opt_is_set(o, opt))
4454                         return true;
4455
4456                 next = opt;
4457         }
4458
4459         return false;
4460 }
4461
4462 void fio_option_mark_set(struct thread_options *o, struct fio_option *opt)
4463 {
4464         unsigned int opt_off, index, offset;
4465
4466         opt_off = opt - &fio_options[0];
4467         index = opt_off / (8 * sizeof(uint64_t));
4468         offset = opt_off & ((8 * sizeof(uint64_t)) - 1);
4469         o->set_options[index] |= (uint64_t)1 << offset;
4470 }