options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <getopt.h>
   7 #include <assert.h>
   8 #include <libgen.h>
   9 #include <fcntl.h>
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12
  13 #include "fio.h"
  14 #include "verify.h"
  15 #include "parse.h"
  16 #include "lib/fls.h"
  17
  18 #define td_var_offset(var)      ((size_t) &((struct thread_options *)0)->var)
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int bs_cmp(const void *p1, const void *p2)
  37 {
  38         const struct bssplit *bsp1 = p1;
  39         const struct bssplit *bsp2 = p2;
  40
  41         return bsp1->perc < bsp2->perc;
  42 }
  43
  44 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  45 {
  46         struct bssplit *bssplit;
  47         unsigned int i, perc, perc_missing;
  48         unsigned int max_bs, min_bs;
  49         long long val;
  50         char *fname;
  51
  52         td->o.bssplit_nr[ddir] = 4;
  53         bssplit = malloc(4 * sizeof(struct bssplit));
  54
  55         i = 0;
  56         max_bs = 0;
  57         min_bs = -1;
  58         while ((fname = strsep(&str, ":")) != NULL) {
  59                 char *perc_str;
  60
  61                 if (!strlen(fname))
  62                         break;
  63
  64                 /*
  65                  * grow struct buffer, if needed
  66                  */
  67                 if (i == td->o.bssplit_nr[ddir]) {
  68                         td->o.bssplit_nr[ddir] <<= 1;
  69                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  70                                                   * sizeof(struct bssplit));
  71                 }
  72
  73                 perc_str = strstr(fname, "/");
  74                 if (perc_str) {
  75                         *perc_str = '\0';
  76                         perc_str++;
  77                         perc = atoi(perc_str);
  78                         if (perc > 100)
  79                                 perc = 100;
  80                         else if (!perc)
  81                                 perc = -1;
  82                 } else
  83                         perc = -1;
  84
  85                 if (str_to_decimal(fname, &val, 1, &td)) {
  86                         log_err("fio: bssplit conversion failed\n");
  87                         free(td->o.bssplit);
  88                         return 1;
  89                 }
  90
  91                 if (val > max_bs)
  92                         max_bs = val;
  93                 if (val < min_bs)
  94                         min_bs = val;
  95
  96                 bssplit[i].bs = val;
  97                 bssplit[i].perc = perc;
  98                 i++;
  99         }
 100
 101         td->o.bssplit_nr[ddir] = i;
 102
 103         /*
 104          * Now check if the percentages add up, and how much is missing
 105          */
 106         perc = perc_missing = 0;
 107         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 108                 struct bssplit *bsp = &bssplit[i];
 109
 110                 if (bsp->perc == (unsigned char) -1)
 111                         perc_missing++;
 112                 else
 113                         perc += bsp->perc;
 114         }
 115
 116         if (perc > 100) {
 117                 log_err("fio: bssplit percentages add to more than 100%%\n");
 118                 free(bssplit);
 119                 return 1;
 120         }
 121         /*
 122          * If values didn't have a percentage set, divide the remains between
 123          * them.
 124          */
 125         if (perc_missing) {
 126                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 127                         struct bssplit *bsp = &bssplit[i];
 128
 129                         if (bsp->perc == (unsigned char) -1)
 130                                 bsp->perc = (100 - perc) / perc_missing;
 131                 }
 132         }
 133
 134         td->o.min_bs[ddir] = min_bs;
 135         td->o.max_bs[ddir] = max_bs;
 136
 137         /*
 138          * now sort based on percentages, for ease of lookup
 139          */
 140         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 141         td->o.bssplit[ddir] = bssplit;
 142         return 0;
 143
 144 }
 145
 146 static int str_bssplit_cb(void *data, const char *input)
 147 {
 148         struct thread_data *td = data;
 149         char *str, *p, *odir;
 150         int ret = 0;
 151
 152         p = str = strdup(input);
 153
 154         strip_blank_front(&str);
 155         strip_blank_end(str);
 156
 157         odir = strchr(str, ',');
 158         if (odir) {
 159                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 160                 if (!ret) {
 161                         *odir = '\0';
 162                         ret = bssplit_ddir(td, DDIR_READ, str);
 163                 }
 164         } else {
 165                 char *op;
 166
 167                 op = strdup(str);
 168
 169                 ret = bssplit_ddir(td, DDIR_READ, str);
 170                 if (!ret)
 171                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 172
 173                 free(op);
 174         }
 175
 176         free(p);
 177         return ret;
 178 }
 179
 180 static int str_rw_cb(void *data, const char *str)
 181 {
 182         struct thread_data *td = data;
 183         char *nr = get_opt_postfix(str);
 184
 185         td->o.ddir_nr = 1;
 186         if (nr) {
 187                 td->o.ddir_nr = atoi(nr);
 188                 free(nr);
 189         }
 190
 191         return 0;
 192 }
 193
 194 static int str_mem_cb(void *data, const char *mem)
 195 {
 196         struct thread_data *td = data;
 197
 198         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 199                 td->mmapfile = get_opt_postfix(mem);
 200                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 201                         log_err("fio: mmaphuge:/path/to/file\n");
 202                         return 1;
 203                 }
 204         }
 205
 206         return 0;
 207 }
 208
 209 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
 210 {
 211         mlock_size = *val;
 212         return 0;
 213 }
 214
 215 static int str_rwmix_read_cb(void *data, unsigned int *val)
 216 {
 217         struct thread_data *td = data;
 218
 219         td->o.rwmix[DDIR_READ] = *val;
 220         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 221         return 0;
 222 }
 223
 224 static int str_rwmix_write_cb(void *data, unsigned int *val)
 225 {
 226         struct thread_data *td = data;
 227
 228         td->o.rwmix[DDIR_WRITE] = *val;
 229         td->o.rwmix[DDIR_READ] = 100 - *val;
 230         return 0;
 231 }
 232
 233 #ifdef FIO_HAVE_IOPRIO
 234 static int str_prioclass_cb(void *data, unsigned int *val)
 235 {
 236         struct thread_data *td = data;
 237         unsigned short mask;
 238
 239         /*
 240          * mask off old class bits, str_prio_cb() may have set a default class
 241          */
 242         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 243         td->ioprio &= mask;
 244
 245         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 246         td->ioprio_set = 1;
 247         return 0;
 248 }
 249
 250 static int str_prio_cb(void *data, unsigned int *val)
 251 {
 252         struct thread_data *td = data;
 253
 254         td->ioprio |= *val;
 255
 256         /*
 257          * If no class is set, assume BE
 258          */
 259         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 260                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 261
 262         td->ioprio_set = 1;
 263         return 0;
 264 }
 265 #endif
 266
 267 static int str_exitall_cb(void)
 268 {
 269         exitall_on_terminate = 1;
 270         return 0;
 271 }
 272
 273 #ifdef FIO_HAVE_CPU_AFFINITY
 274 static int str_cpumask_cb(void *data, unsigned int *val)
 275 {
 276         struct thread_data *td = data;
 277         unsigned int i;
 278         long max_cpu;
 279         int ret;
 280
 281         ret = fio_cpuset_init(&td->o.cpumask);
 282         if (ret < 0) {
 283                 log_err("fio: cpuset_init failed\n");
 284                 td_verror(td, ret, "fio_cpuset_init");
 285                 return 1;
 286         }
 287
 288         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 289
 290         for (i = 0; i < sizeof(int) * 8; i++) {
 291                 if ((1 << i) & *val) {
 292                         if (i > max_cpu) {
 293                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 294                                                                 max_cpu);
 295                                 return 1;
 296                         }
 297                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 298                         fio_cpu_set(&td->o.cpumask, i);
 299                 }
 300         }
 301
 302         td->o.cpumask_set = 1;
 303         return 0;
 304 }
 305
 306 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 307                             const char *input)
 308 {
 309         char *cpu, *str, *p;
 310         long max_cpu;
 311         int ret = 0;
 312
 313         ret = fio_cpuset_init(mask);
 314         if (ret < 0) {
 315                 log_err("fio: cpuset_init failed\n");
 316                 td_verror(td, ret, "fio_cpuset_init");
 317                 return 1;
 318         }
 319
 320         p = str = strdup(input);
 321
 322         strip_blank_front(&str);
 323         strip_blank_end(str);
 324
 325         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 326
 327         while ((cpu = strsep(&str, ",")) != NULL) {
 328                 char *str2, *cpu2;
 329                 int icpu, icpu2;
 330
 331                 if (!strlen(cpu))
 332                         break;
 333
 334                 str2 = cpu;
 335                 icpu2 = -1;
 336                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 337                         if (!strlen(cpu2))
 338                                 break;
 339
 340                         icpu2 = atoi(cpu2);
 341                 }
 342
 343                 icpu = atoi(cpu);
 344                 if (icpu2 == -1)
 345                         icpu2 = icpu;
 346                 while (icpu <= icpu2) {
 347                         if (icpu >= FIO_MAX_CPUS) {
 348                                 log_err("fio: your OS only supports up to"
 349                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 350                                 ret = 1;
 351                                 break;
 352                         }
 353                         if (icpu > max_cpu) {
 354                                 log_err("fio: CPU %d too large (max=%ld)\n",
 355                                                         icpu, max_cpu);
 356                                 ret = 1;
 357                                 break;
 358                         }
 359
 360                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 361                         fio_cpu_set(mask, icpu);
 362                         icpu++;
 363                 }
 364                 if (ret)
 365                         break;
 366         }
 367
 368         free(p);
 369         if (!ret)
 370                 td->o.cpumask_set = 1;
 371         return ret;
 372 }
 373
 374 static int str_cpus_allowed_cb(void *data, const char *input)
 375 {
 376         struct thread_data *td = data;
 377         int ret;
 378
 379         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 380         if (!ret)
 381                 td->o.cpumask_set = 1;
 382
 383         return ret;
 384 }
 385
 386 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 387 {
 388         struct thread_data *td = data;
 389         int ret;
 390
 391         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 392         if (!ret)
 393                 td->o.verify_cpumask_set = 1;
 394
 395         return ret;
 396 }
 397 #endif
 398
 399 static int str_fst_cb(void *data, const char *str)
 400 {
 401         struct thread_data *td = data;
 402         char *nr = get_opt_postfix(str);
 403
 404         td->file_service_nr = 1;
 405         if (nr) {
 406                 td->file_service_nr = atoi(nr);
 407                 free(nr);
 408         }
 409
 410         return 0;
 411 }
 412
 413 static int check_dir(struct thread_data *td, char *fname)
 414 {
 415         char file[PATH_MAX], *dir;
 416         int elen = 0;
 417
 418         if (td->o.directory) {
 419                 strcpy(file, td->o.directory);
 420                 strcat(file, "/");
 421                 elen = strlen(file);
 422         }
 423
 424         sprintf(file + elen, "%s", fname);
 425         dir = dirname(file);
 426
 427 #if 0
 428         {
 429         struct stat sb;
 430         /*
 431          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 432          * yet, so we can't do this check right here...
 433          */
 434         if (lstat(dir, &sb) < 0) {
 435                 int ret = errno;
 436
 437                 log_err("fio: %s is not a directory\n", dir);
 438                 td_verror(td, ret, "lstat");
 439                 return 1;
 440         }
 441
 442         if (!S_ISDIR(sb.st_mode)) {
 443                 log_err("fio: %s is not a directory\n", dir);
 444                 return 1;
 445         }
 446         }
 447 #endif
 448
 449         return 0;
 450 }
 451
 452 static int str_filename_cb(void *data, const char *input)
 453 {
 454         struct thread_data *td = data;
 455         char *fname, *str, *p;
 456
 457         p = str = strdup(input);
 458
 459         strip_blank_front(&str);
 460         strip_blank_end(str);
 461
 462         if (!td->files_index)
 463                 td->o.nr_files = 0;
 464
 465         while ((fname = strsep(&str, ":")) != NULL) {
 466                 if (!strlen(fname))
 467                         break;
 468                 if (check_dir(td, fname)) {
 469                         free(p);
 470                         return 1;
 471                 }
 472                 add_file(td, fname);
 473                 td->o.nr_files++;
 474         }
 475
 476         free(p);
 477         return 0;
 478 }
 479
 480 static int str_directory_cb(void *data, const char fio_unused *str)
 481 {
 482         struct thread_data *td = data;
 483         struct stat sb;
 484
 485         if (lstat(td->o.directory, &sb) < 0) {
 486                 int ret = errno;
 487
 488                 log_err("fio: %s is not a directory\n", td->o.directory);
 489                 td_verror(td, ret, "lstat");
 490                 return 1;
 491         }
 492         if (!S_ISDIR(sb.st_mode)) {
 493                 log_err("fio: %s is not a directory\n", td->o.directory);
 494                 return 1;
 495         }
 496
 497         return 0;
 498 }
 499
 500 static int str_opendir_cb(void *data, const char fio_unused *str)
 501 {
 502         struct thread_data *td = data;
 503
 504         if (!td->files_index)
 505                 td->o.nr_files = 0;
 506
 507         return add_dir_files(td, td->o.opendir);
 508 }
 509
 510 static int str_verify_offset_cb(void *data, unsigned int *off)
 511 {
 512         struct thread_data *td = data;
 513
 514         if (*off && *off < sizeof(struct verify_header)) {
 515                 log_err("fio: verify_offset too small\n");
 516                 return 1;
 517         }
 518
 519         td->o.verify_offset = *off;
 520         return 0;
 521 }
 522
 523 static int str_verify_pattern_cb(void *data, unsigned int *off)
 524 {
 525         struct thread_data *td = data;
 526         unsigned int msb;
 527
 528         msb = __fls(*off);
 529         if (msb <= 8)
 530                 td->o.verify_pattern_bytes = 1;
 531         else if (msb <= 16)
 532                 td->o.verify_pattern_bytes = 2;
 533         else if (msb <= 24)
 534                 td->o.verify_pattern_bytes = 3;
 535         else
 536                 td->o.verify_pattern_bytes = 4;
 537
 538         td->o.verify_pattern = *off;
 539         return 0;
 540 }
 541
 542 static int str_lockfile_cb(void *data, const char *str)
 543 {
 544         struct thread_data *td = data;
 545         char *nr = get_opt_postfix(str);
 546
 547         td->o.lockfile_batch = 1;
 548         if (nr) {
 549                 td->o.lockfile_batch = atoi(nr);
 550                 free(nr);
 551         }
 552
 553         return 0;
 554 }
 555
 556 static int str_write_bw_log_cb(void *data, const char *str)
 557 {
 558         struct thread_data *td = data;
 559
 560         if (str)
 561                 td->o.bw_log_file = strdup(str);
 562
 563         td->o.write_bw_log = 1;
 564         return 0;
 565 }
 566
 567 static int str_write_lat_log_cb(void *data, const char *str)
 568 {
 569         struct thread_data *td = data;
 570
 571         if (str)
 572                 td->o.lat_log_file = strdup(str);
 573
 574         td->o.write_lat_log = 1;
 575         return 0;
 576 }
 577
 578 static int str_gtod_reduce_cb(void *data, int *il)
 579 {
 580         struct thread_data *td = data;
 581         int val = *il;
 582
 583         td->o.disable_clat = !!val;
 584         td->o.disable_slat = !!val;
 585         td->o.disable_bw = !!val;
 586         if (val)
 587                 td->tv_cache_mask = 63;
 588
 589         return 0;
 590 }
 591
 592 static int str_gtod_cpu_cb(void *data, int *il)
 593 {
 594         struct thread_data *td = data;
 595         int val = *il;
 596
 597         td->o.gtod_cpu = val;
 598         td->o.gtod_offload = 1;
 599         return 0;
 600 }
 601
 602 static int rw_verify(struct fio_option *o, void *data)
 603 {
 604         struct thread_data *td = data;
 605
 606         if (read_only && td_write(td)) {
 607                 log_err("fio: job <%s> has write bit set, but fio is in"
 608                         " read-only mode\n", td->o.name);
 609                 return 1;
 610         }
 611
 612         return 0;
 613 }
 614
 615 static int gtod_cpu_verify(struct fio_option *o, void *data)
 616 {
 617 #ifndef FIO_HAVE_CPU_AFFINITY
 618         struct thread_data *td = data;
 619
 620         if (td->o.gtod_cpu) {
 621                 log_err("fio: platform must support CPU affinity for"
 622                         "gettimeofday() offloading\n");
 623                 return 1;
 624         }
 625 #endif
 626
 627         return 0;
 628 }
 629
 630 static int kb_base_verify(struct fio_option *o, void *data)
 631 {
 632         struct thread_data *td = data;
 633
 634         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
 635                 log_err("fio: kb_base set to nonsensical value: %u\n",
 636                                 td->o.kb_base);
 637                 return 1;
 638         }
 639
 640         return 0;
 641 }
 642
 643 #define __stringify_1(x)        #x
 644 #define __stringify(x)          __stringify_1(x)
 645
 646 /*
 647  * Map of job/command line options
 648  */
 649 static struct fio_option options[] = {
 650         {
 651                 .name   = "description",
 652                 .type   = FIO_OPT_STR_STORE,
 653                 .off1   = td_var_offset(description),
 654                 .help   = "Text job description",
 655         },
 656         {
 657                 .name   = "name",
 658                 .type   = FIO_OPT_STR_STORE,
 659                 .off1   = td_var_offset(name),
 660                 .help   = "Name of this job",
 661         },
 662         {
 663                 .name   = "directory",
 664                 .type   = FIO_OPT_STR_STORE,
 665                 .off1   = td_var_offset(directory),
 666                 .cb     = str_directory_cb,
 667                 .help   = "Directory to store files in",
 668         },
 669         {
 670                 .name   = "filename",
 671                 .type   = FIO_OPT_STR_STORE,
 672                 .off1   = td_var_offset(filename),
 673                 .cb     = str_filename_cb,
 674                 .prio   = -1, /* must come after "directory" */
 675                 .help   = "File(s) to use for the workload",
 676         },
 677         {
 678                 .name   = "kb_base",
 679                 .type   = FIO_OPT_INT,
 680                 .off1   = td_var_offset(kb_base),
 681                 .verify = kb_base_verify,
 682                 .prio   = 1,
 683                 .def    = "1024",
 684                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
 685         },
 686         {
 687                 .name   = "lockfile",
 688                 .type   = FIO_OPT_STR,
 689                 .cb     = str_lockfile_cb,
 690                 .off1   = td_var_offset(file_lock_mode),
 691                 .help   = "Lock file when doing IO to it",
 692                 .parent = "filename",
 693                 .def    = "none",
 694                 .posval = {
 695                           { .ival = "none",
 696                             .oval = FILE_LOCK_NONE,
 697                             .help = "No file locking",
 698                           },
 699                           { .ival = "exclusive",
 700                             .oval = FILE_LOCK_EXCLUSIVE,
 701                             .help = "Exclusive file lock",
 702                           },
 703                           {
 704                             .ival = "readwrite",
 705                             .oval = FILE_LOCK_READWRITE,
 706                             .help = "Read vs write lock",
 707                           },
 708                 },
 709         },
 710         {
 711                 .name   = "opendir",
 712                 .type   = FIO_OPT_STR_STORE,
 713                 .off1   = td_var_offset(opendir),
 714                 .cb     = str_opendir_cb,
 715                 .help   = "Recursively add files from this directory and down",
 716         },
 717         {
 718                 .name   = "rw",
 719                 .alias  = "readwrite",
 720                 .type   = FIO_OPT_STR,
 721                 .cb     = str_rw_cb,
 722                 .off1   = td_var_offset(td_ddir),
 723                 .help   = "IO direction",
 724                 .def    = "read",
 725                 .verify = rw_verify,
 726                 .posval = {
 727                           { .ival = "read",
 728                             .oval = TD_DDIR_READ,
 729                             .help = "Sequential read",
 730                           },
 731                           { .ival = "write",
 732                             .oval = TD_DDIR_WRITE,
 733                             .help = "Sequential write",
 734                           },
 735                           { .ival = "randread",
 736                             .oval = TD_DDIR_RANDREAD,
 737                             .help = "Random read",
 738                           },
 739                           { .ival = "randwrite",
 740                             .oval = TD_DDIR_RANDWRITE,
 741                             .help = "Random write",
 742                           },
 743                           { .ival = "rw",
 744                             .oval = TD_DDIR_RW,
 745                             .help = "Sequential read and write mix",
 746                           },
 747                           { .ival = "randrw",
 748                             .oval = TD_DDIR_RANDRW,
 749                             .help = "Random read and write mix"
 750                           },
 751                 },
 752         },
 753         {
 754                 .name   = "ioengine",
 755                 .type   = FIO_OPT_STR_STORE,
 756                 .off1   = td_var_offset(ioengine),
 757                 .help   = "IO engine to use",
 758                 .def    = "sync",
 759                 .posval = {
 760                           { .ival = "sync",
 761                             .help = "Use read/write",
 762                           },
 763                           { .ival = "psync",
 764                             .help = "Use pread/pwrite",
 765                           },
 766                           { .ival = "vsync",
 767                              .help = "Use readv/writev",
 768                           },
 769 #ifdef FIO_HAVE_LIBAIO
 770                           { .ival = "libaio",
 771                             .help = "Linux native asynchronous IO",
 772                           },
 773 #endif
 774 #ifdef FIO_HAVE_POSIXAIO
 775                           { .ival = "posixaio",
 776                             .help = "POSIX asynchronous IO",
 777                           },
 778 #endif
 779 #ifdef FIO_HAVE_SOLARISAIO
 780                           { .ival = "solarisaio",
 781                             .help = "Solaris native asynchronous IO",
 782                           },
 783 #endif
 784                           { .ival = "mmap",
 785                             .help = "Memory mapped IO",
 786                           },
 787 #ifdef FIO_HAVE_SPLICE
 788                           { .ival = "splice",
 789                             .help = "splice/vmsplice based IO",
 790                           },
 791                           { .ival = "netsplice",
 792                             .help = "splice/vmsplice to/from the network",
 793                           },
 794 #endif
 795 #ifdef FIO_HAVE_SGIO
 796                           { .ival = "sg",
 797                             .help = "SCSI generic v3 IO",
 798                           },
 799 #endif
 800                           { .ival = "null",
 801                             .help = "Testing engine (no data transfer)",
 802                           },
 803                           { .ival = "net",
 804                             .help = "Network IO",
 805                           },
 806 #ifdef FIO_HAVE_SYSLET
 807                           { .ival = "syslet-rw",
 808                             .help = "syslet enabled async pread/pwrite IO",
 809                           },
 810 #endif
 811                           { .ival = "cpuio",
 812                             .help = "CPU cycler burner engine",
 813                           },
 814 #ifdef FIO_HAVE_GUASI
 815                           { .ival = "guasi",
 816                             .help = "GUASI IO engine",
 817                           },
 818 #endif
 819                           { .ival = "external",
 820                             .help = "Load external engine (append name)",
 821                           },
 822                 },
 823         },
 824         {
 825                 .name   = "iodepth",
 826                 .type   = FIO_OPT_INT,
 827                 .off1   = td_var_offset(iodepth),
 828                 .help   = "Amount of IO buffers to keep in flight",
 829                 .minval = 1,
 830                 .def    = "1",
 831         },
 832         {
 833                 .name   = "iodepth_batch",
 834                 .alias  = "iodepth_batch_submit",
 835                 .type   = FIO_OPT_INT,
 836                 .off1   = td_var_offset(iodepth_batch),
 837                 .help   = "Number of IO buffers to submit in one go",
 838                 .parent = "iodepth",
 839                 .minval = 1,
 840                 .def    = "1",
 841         },
 842         {
 843                 .name   = "iodepth_batch_complete",
 844                 .type   = FIO_OPT_INT,
 845                 .off1   = td_var_offset(iodepth_batch_complete),
 846                 .help   = "Number of IO buffers to retrieve in one go",
 847                 .parent = "iodepth",
 848                 .minval = 0,
 849                 .def    = "1",
 850         },
 851         {
 852                 .name   = "iodepth_low",
 853                 .type   = FIO_OPT_INT,
 854                 .off1   = td_var_offset(iodepth_low),
 855                 .help   = "Low water mark for queuing depth",
 856                 .parent = "iodepth",
 857         },
 858         {
 859                 .name   = "size",
 860                 .type   = FIO_OPT_STR_VAL,
 861                 .off1   = td_var_offset(size),
 862                 .minval = 1,
 863                 .help   = "Total size of device or files",
 864         },
 865         {
 866                 .name   = "fill_device",
 867                 .type   = FIO_OPT_BOOL,
 868                 .off1   = td_var_offset(fill_device),
 869                 .help   = "Write until an ENOSPC error occurs",
 870                 .def    = "0",
 871         },
 872         {
 873                 .name   = "filesize",
 874                 .type   = FIO_OPT_STR_VAL,
 875                 .off1   = td_var_offset(file_size_low),
 876                 .off2   = td_var_offset(file_size_high),
 877                 .minval = 1,
 878                 .help   = "Size of individual files",
 879         },
 880         {
 881                 .name   = "offset",
 882                 .alias  = "fileoffset",
 883                 .type   = FIO_OPT_STR_VAL,
 884                 .off1   = td_var_offset(start_offset),
 885                 .help   = "Start IO from this offset",
 886                 .def    = "0",
 887         },
 888         {
 889                 .name   = "bs",
 890                 .alias  = "blocksize",
 891                 .type   = FIO_OPT_INT,
 892                 .off1   = td_var_offset(bs[DDIR_READ]),
 893                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 894                 .minval = 1,
 895                 .help   = "Block size unit",
 896                 .def    = "4k",
 897                 .parent = "rw",
 898         },
 899         {
 900                 .name   = "ba",
 901                 .alias  = "blockalign",
 902                 .type   = FIO_OPT_INT,
 903                 .off1   = td_var_offset(ba[DDIR_READ]),
 904                 .off2   = td_var_offset(ba[DDIR_WRITE]),
 905                 .minval = 1,
 906                 .help   = "IO block offset alignment",
 907                 .parent = "rw",
 908         },
 909         {
 910                 .name   = "bsrange",
 911                 .alias  = "blocksize_range",
 912                 .type   = FIO_OPT_RANGE,
 913                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 914                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 915                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 916                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 917                 .minval = 1,
 918                 .help   = "Set block size range (in more detail than bs)",
 919                 .parent = "rw",
 920         },
 921         {
 922                 .name   = "bssplit",
 923                 .type   = FIO_OPT_STR,
 924                 .cb     = str_bssplit_cb,
 925                 .help   = "Set a specific mix of block sizes",
 926                 .parent = "rw",
 927         },
 928         {
 929                 .name   = "bs_unaligned",
 930                 .alias  = "blocksize_unaligned",
 931                 .type   = FIO_OPT_STR_SET,
 932                 .off1   = td_var_offset(bs_unaligned),
 933                 .help   = "Don't sector align IO buffer sizes",
 934                 .parent = "rw",
 935         },
 936         {
 937                 .name   = "randrepeat",
 938                 .type   = FIO_OPT_BOOL,
 939                 .off1   = td_var_offset(rand_repeatable),
 940                 .help   = "Use repeatable random IO pattern",
 941                 .def    = "1",
 942                 .parent = "rw",
 943         },
 944         {
 945                 .name   = "norandommap",
 946                 .type   = FIO_OPT_STR_SET,
 947                 .off1   = td_var_offset(norandommap),
 948                 .help   = "Accept potential duplicate random blocks",
 949                 .parent = "rw",
 950         },
 951         {
 952                 .name   = "softrandommap",
 953                 .type   = FIO_OPT_BOOL,
 954                 .off1   = td_var_offset(softrandommap),
 955                 .help   = "Set norandommap if randommap allocation fails",
 956                 .parent = "norandommap",
 957                 .def    = "0",
 958         },
 959         {
 960                 .name   = "nrfiles",
 961                 .type   = FIO_OPT_INT,
 962                 .off1   = td_var_offset(nr_files),
 963                 .help   = "Split job workload between this number of files",
 964                 .def    = "1",
 965         },
 966         {
 967                 .name   = "openfiles",
 968                 .type   = FIO_OPT_INT,
 969                 .off1   = td_var_offset(open_files),
 970                 .help   = "Number of files to keep open at the same time",
 971         },
 972         {
 973                 .name   = "file_service_type",
 974                 .type   = FIO_OPT_STR,
 975                 .cb     = str_fst_cb,
 976                 .off1   = td_var_offset(file_service_type),
 977                 .help   = "How to select which file to service next",
 978                 .def    = "roundrobin",
 979                 .posval = {
 980                           { .ival = "random",
 981                             .oval = FIO_FSERVICE_RANDOM,
 982                             .help = "Choose a file at random",
 983                           },
 984                           { .ival = "roundrobin",
 985                             .oval = FIO_FSERVICE_RR,
 986                             .help = "Round robin select files",
 987                           },
 988                           { .ival = "sequential",
 989                             .oval = FIO_FSERVICE_SEQ,
 990                             .help = "Finish one file before moving to the next",
 991                           },
 992                 },
 993                 .parent = "nrfiles",
 994         },
 995         {
 996                 .name   = "fadvise_hint",
 997                 .type   = FIO_OPT_BOOL,
 998                 .off1   = td_var_offset(fadvise_hint),
 999                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1000                 .def    = "1",
1001         },
1002         {
1003                 .name   = "fsync",
1004                 .type   = FIO_OPT_INT,
1005                 .off1   = td_var_offset(fsync_blocks),
1006                 .help   = "Issue fsync for writes every given number of blocks",
1007                 .def    = "0",
1008         },
1009         {
1010                 .name   = "fdatasync",
1011                 .type   = FIO_OPT_INT,
1012                 .off1   = td_var_offset(fdatasync_blocks),
1013                 .help   = "Issue fdatasync for writes every given number of blocks",
1014                 .def    = "0",
1015         },
1016         {
1017                 .name   = "direct",
1018                 .type   = FIO_OPT_BOOL,
1019                 .off1   = td_var_offset(odirect),
1020                 .help   = "Use O_DIRECT IO (negates buffered)",
1021                 .def    = "0",
1022         },
1023         {
1024                 .name   = "buffered",
1025                 .type   = FIO_OPT_BOOL,
1026                 .off1   = td_var_offset(odirect),
1027                 .neg    = 1,
1028                 .help   = "Use buffered IO (negates direct)",
1029                 .def    = "1",
1030         },
1031         {
1032                 .name   = "overwrite",
1033                 .type   = FIO_OPT_BOOL,
1034                 .off1   = td_var_offset(overwrite),
1035                 .help   = "When writing, set whether to overwrite current data",
1036                 .def    = "0",
1037         },
1038         {
1039                 .name   = "loops",
1040                 .type   = FIO_OPT_INT,
1041                 .off1   = td_var_offset(loops),
1042                 .help   = "Number of times to run the job",
1043                 .def    = "1",
1044         },
1045         {
1046                 .name   = "numjobs",
1047                 .type   = FIO_OPT_INT,
1048                 .off1   = td_var_offset(numjobs),
1049                 .help   = "Duplicate this job this many times",
1050                 .def    = "1",
1051         },
1052         {
1053                 .name   = "startdelay",
1054                 .type   = FIO_OPT_INT,
1055                 .off1   = td_var_offset(start_delay),
1056                 .help   = "Only start job when this period has passed",
1057                 .def    = "0",
1058         },
1059         {
1060                 .name   = "runtime",
1061                 .alias  = "timeout",
1062                 .type   = FIO_OPT_STR_VAL_TIME,
1063                 .off1   = td_var_offset(timeout),
1064                 .help   = "Stop workload when this amount of time has passed",
1065                 .def    = "0",
1066         },
1067         {
1068                 .name   = "time_based",
1069                 .type   = FIO_OPT_STR_SET,
1070                 .off1   = td_var_offset(time_based),
1071                 .help   = "Keep running until runtime/timeout is met",
1072         },
1073         {
1074                 .name   = "ramp_time",
1075                 .type   = FIO_OPT_STR_VAL_TIME,
1076                 .off1   = td_var_offset(ramp_time),
1077                 .help   = "Ramp up time before measuring performance",
1078         },
1079         {
1080                 .name   = "mem",
1081                 .alias  = "iomem",
1082                 .type   = FIO_OPT_STR,
1083                 .cb     = str_mem_cb,
1084                 .off1   = td_var_offset(mem_type),
1085                 .help   = "Backing type for IO buffers",
1086                 .def    = "malloc",
1087                 .posval = {
1088                           { .ival = "malloc",
1089                             .oval = MEM_MALLOC,
1090                             .help = "Use malloc(3) for IO buffers",
1091                           },
1092                           { .ival = "shm",
1093                             .oval = MEM_SHM,
1094                             .help = "Use shared memory segments for IO buffers",
1095                           },
1096 #ifdef FIO_HAVE_HUGETLB
1097                           { .ival = "shmhuge",
1098                             .oval = MEM_SHMHUGE,
1099                             .help = "Like shm, but use huge pages",
1100                           },
1101 #endif
1102                           { .ival = "mmap",
1103                             .oval = MEM_MMAP,
1104                             .help = "Use mmap(2) (file or anon) for IO buffers",
1105                           },
1106 #ifdef FIO_HAVE_HUGETLB
1107                           { .ival = "mmaphuge",
1108                             .oval = MEM_MMAPHUGE,
1109                             .help = "Like mmap, but use huge pages",
1110                           },
1111 #endif
1112                   },
1113         },
1114         {
1115                 .name   = "iomem_align",
1116                 .alias  = "mem_align",
1117                 .type   = FIO_OPT_INT,
1118                 .off1   = td_var_offset(mem_align),
1119                 .minval = 0,
1120                 .help   = "IO memory buffer offset alignment",
1121                 .def    = "0",
1122                 .parent = "iomem",
1123         },
1124         {
1125                 .name   = "verify",
1126                 .type   = FIO_OPT_STR,
1127                 .off1   = td_var_offset(verify),
1128                 .help   = "Verify data written",
1129                 .def    = "0",
1130                 .posval = {
1131                           { .ival = "0",
1132                             .oval = VERIFY_NONE,
1133                             .help = "Don't do IO verification",
1134                           },
1135                           { .ival = "md5",
1136                             .oval = VERIFY_MD5,
1137                             .help = "Use md5 checksums for verification",
1138                           },
1139                           { .ival = "crc64",
1140                             .oval = VERIFY_CRC64,
1141                             .help = "Use crc64 checksums for verification",
1142                           },
1143                           { .ival = "crc32",
1144                             .oval = VERIFY_CRC32,
1145                             .help = "Use crc32 checksums for verification",
1146                           },
1147                           { .ival = "crc32c-intel",
1148                             .oval = VERIFY_CRC32C_INTEL,
1149                             .help = "Use hw crc32c checksums for verification",
1150                           },
1151                           { .ival = "crc32c",
1152                             .oval = VERIFY_CRC32C,
1153                             .help = "Use crc32c checksums for verification",
1154                           },
1155                           { .ival = "crc16",
1156                             .oval = VERIFY_CRC16,
1157                             .help = "Use crc16 checksums for verification",
1158                           },
1159                           { .ival = "crc7",
1160                             .oval = VERIFY_CRC7,
1161                             .help = "Use crc7 checksums for verification",
1162                           },
1163                           { .ival = "sha256",
1164                             .oval = VERIFY_SHA256,
1165                             .help = "Use sha256 checksums for verification",
1166                           },
1167                           { .ival = "sha512",
1168                             .oval = VERIFY_SHA512,
1169                             .help = "Use sha512 checksums for verification",
1170                           },
1171                           { .ival = "meta",
1172                             .oval = VERIFY_META,
1173                             .help = "Use io information",
1174                           },
1175                           {
1176                             .ival = "null",
1177                             .oval = VERIFY_NULL,
1178                             .help = "Pretend to verify",
1179                           },
1180                 },
1181         },
1182         {
1183                 .name   = "do_verify",
1184                 .type   = FIO_OPT_BOOL,
1185                 .off1   = td_var_offset(do_verify),
1186                 .help   = "Run verification stage after write",
1187                 .def    = "1",
1188                 .parent = "verify",
1189         },
1190         {
1191                 .name   = "verifysort",
1192                 .type   = FIO_OPT_BOOL,
1193                 .off1   = td_var_offset(verifysort),
1194                 .help   = "Sort written verify blocks for read back",
1195                 .def    = "1",
1196                 .parent = "verify",
1197         },
1198         {
1199                 .name   = "verify_interval",
1200                 .type   = FIO_OPT_INT,
1201                 .off1   = td_var_offset(verify_interval),
1202                 .minval = 2 * sizeof(struct verify_header),
1203                 .help   = "Store verify buffer header every N bytes",
1204                 .parent = "verify",
1205         },
1206         {
1207                 .name   = "verify_offset",
1208                 .type   = FIO_OPT_INT,
1209                 .help   = "Offset verify header location by N bytes",
1210                 .def    = "0",
1211                 .cb     = str_verify_offset_cb,
1212                 .parent = "verify",
1213         },
1214         {
1215                 .name   = "verify_pattern",
1216                 .type   = FIO_OPT_INT,
1217                 .cb     = str_verify_pattern_cb,
1218                 .help   = "Fill pattern for IO buffers",
1219                 .parent = "verify",
1220         },
1221         {
1222                 .name   = "verify_fatal",
1223                 .type   = FIO_OPT_BOOL,
1224                 .off1   = td_var_offset(verify_fatal),
1225                 .def    = "0",
1226                 .help   = "Exit on a single verify failure, don't continue",
1227                 .parent = "verify",
1228         },
1229         {
1230                 .name   = "verify_async",
1231                 .type   = FIO_OPT_INT,
1232                 .off1   = td_var_offset(verify_async),
1233                 .def    = "0",
1234                 .help   = "Number of async verifier threads to use",
1235                 .parent = "verify",
1236         },
1237 #ifdef FIO_HAVE_CPU_AFFINITY
1238         {
1239                 .name   = "verify_async_cpus",
1240                 .type   = FIO_OPT_STR,
1241                 .cb     = str_verify_cpus_allowed_cb,
1242                 .help   = "Set CPUs allowed for async verify threads",
1243                 .parent = "verify_async",
1244         },
1245 #endif
1246         {
1247                 .name   = "write_iolog",
1248                 .type   = FIO_OPT_STR_STORE,
1249                 .off1   = td_var_offset(write_iolog_file),
1250                 .help   = "Store IO pattern to file",
1251         },
1252         {
1253                 .name   = "read_iolog",
1254                 .type   = FIO_OPT_STR_STORE,
1255                 .off1   = td_var_offset(read_iolog_file),
1256                 .help   = "Playback IO pattern from file",
1257         },
1258         {
1259                 .name   = "exec_prerun",
1260                 .type   = FIO_OPT_STR_STORE,
1261                 .off1   = td_var_offset(exec_prerun),
1262                 .help   = "Execute this file prior to running job",
1263         },
1264         {
1265                 .name   = "exec_postrun",
1266                 .type   = FIO_OPT_STR_STORE,
1267                 .off1   = td_var_offset(exec_postrun),
1268                 .help   = "Execute this file after running job",
1269         },
1270 #ifdef FIO_HAVE_IOSCHED_SWITCH
1271         {
1272                 .name   = "ioscheduler",
1273                 .type   = FIO_OPT_STR_STORE,
1274                 .off1   = td_var_offset(ioscheduler),
1275                 .help   = "Use this IO scheduler on the backing device",
1276         },
1277 #endif
1278         {
1279                 .name   = "zonesize",
1280                 .type   = FIO_OPT_STR_VAL,
1281                 .off1   = td_var_offset(zone_size),
1282                 .help   = "Give size of an IO zone",
1283                 .def    = "0",
1284         },
1285         {
1286                 .name   = "zoneskip",
1287                 .type   = FIO_OPT_STR_VAL,
1288                 .off1   = td_var_offset(zone_skip),
1289                 .help   = "Space between IO zones",
1290                 .def    = "0",
1291         },
1292         {
1293                 .name   = "lockmem",
1294                 .type   = FIO_OPT_STR_VAL,
1295                 .cb     = str_lockmem_cb,
1296                 .help   = "Lock down this amount of memory",
1297                 .def    = "0",
1298         },
1299         {
1300                 .name   = "rwmixread",
1301                 .type   = FIO_OPT_INT,
1302                 .cb     = str_rwmix_read_cb,
1303                 .maxval = 100,
1304                 .help   = "Percentage of mixed workload that is reads",
1305                 .def    = "50",
1306         },
1307         {
1308                 .name   = "rwmixwrite",
1309                 .type   = FIO_OPT_INT,
1310                 .cb     = str_rwmix_write_cb,
1311                 .maxval = 100,
1312                 .help   = "Percentage of mixed workload that is writes",
1313                 .def    = "50",
1314         },
1315         {
1316                 .name   = "rwmixcycle",
1317                 .type   = FIO_OPT_DEPRECATED,
1318         },
1319         {
1320                 .name   = "nice",
1321                 .type   = FIO_OPT_INT,
1322                 .off1   = td_var_offset(nice),
1323                 .help   = "Set job CPU nice value",
1324                 .minval = -19,
1325                 .maxval = 20,
1326                 .def    = "0",
1327         },
1328 #ifdef FIO_HAVE_IOPRIO
1329         {
1330                 .name   = "prio",
1331                 .type   = FIO_OPT_INT,
1332                 .cb     = str_prio_cb,
1333                 .help   = "Set job IO priority value",
1334                 .minval = 0,
1335                 .maxval = 7,
1336         },
1337         {
1338                 .name   = "prioclass",
1339                 .type   = FIO_OPT_INT,
1340                 .cb     = str_prioclass_cb,
1341                 .help   = "Set job IO priority class",
1342                 .minval = 0,
1343                 .maxval = 3,
1344         },
1345 #endif
1346         {
1347                 .name   = "thinktime",
1348                 .type   = FIO_OPT_INT,
1349                 .off1   = td_var_offset(thinktime),
1350                 .help   = "Idle time between IO buffers (usec)",
1351                 .def    = "0",
1352         },
1353         {
1354                 .name   = "thinktime_spin",
1355                 .type   = FIO_OPT_INT,
1356                 .off1   = td_var_offset(thinktime_spin),
1357                 .help   = "Start think time by spinning this amount (usec)",
1358                 .def    = "0",
1359                 .parent = "thinktime",
1360         },
1361         {
1362                 .name   = "thinktime_blocks",
1363                 .type   = FIO_OPT_INT,
1364                 .off1   = td_var_offset(thinktime_blocks),
1365                 .help   = "IO buffer period between 'thinktime'",
1366                 .def    = "1",
1367                 .parent = "thinktime",
1368         },
1369         {
1370                 .name   = "rate",
1371                 .type   = FIO_OPT_INT,
1372                 .off1   = td_var_offset(rate[0]),
1373                 .off2   = td_var_offset(rate[1]),
1374                 .help   = "Set bandwidth rate",
1375         },
1376         {
1377                 .name   = "ratemin",
1378                 .type   = FIO_OPT_INT,
1379                 .off1   = td_var_offset(ratemin[0]),
1380                 .off2   = td_var_offset(ratemin[1]),
1381                 .help   = "Job must meet this rate or it will be shutdown",
1382                 .parent = "rate",
1383         },
1384         {
1385                 .name   = "rate_iops",
1386                 .type   = FIO_OPT_INT,
1387                 .off1   = td_var_offset(rate_iops[0]),
1388                 .off2   = td_var_offset(rate_iops[1]),
1389                 .help   = "Limit IO used to this number of IO operations/sec",
1390         },
1391         {
1392                 .name   = "rate_iops_min",
1393                 .type   = FIO_OPT_INT,
1394                 .off1   = td_var_offset(rate_iops_min[0]),
1395                 .off2   = td_var_offset(rate_iops_min[1]),
1396                 .help   = "Job must meet this rate or it will be shutdown",
1397                 .parent = "rate_iops",
1398         },
1399         {
1400                 .name   = "ratecycle",
1401                 .type   = FIO_OPT_INT,
1402                 .off1   = td_var_offset(ratecycle),
1403                 .help   = "Window average for rate limits (msec)",
1404                 .def    = "1000",
1405                 .parent = "rate",
1406         },
1407         {
1408                 .name   = "invalidate",
1409                 .type   = FIO_OPT_BOOL,
1410                 .off1   = td_var_offset(invalidate_cache),
1411                 .help   = "Invalidate buffer/page cache prior to running job",
1412                 .def    = "1",
1413         },
1414         {
1415                 .name   = "sync",
1416                 .type   = FIO_OPT_BOOL,
1417                 .off1   = td_var_offset(sync_io),
1418                 .help   = "Use O_SYNC for buffered writes",
1419                 .def    = "0",
1420                 .parent = "buffered",
1421         },
1422         {
1423                 .name   = "bwavgtime",
1424                 .type   = FIO_OPT_INT,
1425                 .off1   = td_var_offset(bw_avg_time),
1426                 .help   = "Time window over which to calculate bandwidth"
1427                           " (msec)",
1428                 .def    = "500",
1429         },
1430         {
1431                 .name   = "create_serialize",
1432                 .type   = FIO_OPT_BOOL,
1433                 .off1   = td_var_offset(create_serialize),
1434                 .help   = "Serialize creating of job files",
1435                 .def    = "1",
1436         },
1437         {
1438                 .name   = "create_fsync",
1439                 .type   = FIO_OPT_BOOL,
1440                 .off1   = td_var_offset(create_fsync),
1441                 .help   = "Fsync file after creation",
1442                 .def    = "1",
1443         },
1444         {
1445                 .name   = "create_on_open",
1446                 .type   = FIO_OPT_BOOL,
1447                 .off1   = td_var_offset(create_on_open),
1448                 .help   = "Create files when they are opened for IO",
1449                 .def    = "0",
1450         },
1451         {
1452                 .name   = "pre_read",
1453                 .type   = FIO_OPT_BOOL,
1454                 .off1   = td_var_offset(pre_read),
1455                 .help   = "Preread files before starting official testing",
1456                 .def    = "0",
1457         },
1458         {
1459                 .name   = "cpuload",
1460                 .type   = FIO_OPT_INT,
1461                 .off1   = td_var_offset(cpuload),
1462                 .help   = "Use this percentage of CPU",
1463         },
1464         {
1465                 .name   = "cpuchunks",
1466                 .type   = FIO_OPT_INT,
1467                 .off1   = td_var_offset(cpucycle),
1468                 .help   = "Length of the CPU burn cycles (usecs)",
1469                 .def    = "50000",
1470                 .parent = "cpuload",
1471         },
1472 #ifdef FIO_HAVE_CPU_AFFINITY
1473         {
1474                 .name   = "cpumask",
1475                 .type   = FIO_OPT_INT,
1476                 .cb     = str_cpumask_cb,
1477                 .help   = "CPU affinity mask",
1478         },
1479         {
1480                 .name   = "cpus_allowed",
1481                 .type   = FIO_OPT_STR,
1482                 .cb     = str_cpus_allowed_cb,
1483                 .help   = "Set CPUs allowed",
1484         },
1485 #endif
1486         {
1487                 .name   = "end_fsync",
1488                 .type   = FIO_OPT_BOOL,
1489                 .off1   = td_var_offset(end_fsync),
1490                 .help   = "Include fsync at the end of job",
1491                 .def    = "0",
1492         },
1493         {
1494                 .name   = "fsync_on_close",
1495                 .type   = FIO_OPT_BOOL,
1496                 .off1   = td_var_offset(fsync_on_close),
1497                 .help   = "fsync files on close",
1498                 .def    = "0",
1499         },
1500         {
1501                 .name   = "unlink",
1502                 .type   = FIO_OPT_BOOL,
1503                 .off1   = td_var_offset(unlink),
1504                 .help   = "Unlink created files after job has completed",
1505                 .def    = "0",
1506         },
1507         {
1508                 .name   = "exitall",
1509                 .type   = FIO_OPT_STR_SET,
1510                 .cb     = str_exitall_cb,
1511                 .help   = "Terminate all jobs when one exits",
1512         },
1513         {
1514                 .name   = "stonewall",
1515                 .type   = FIO_OPT_STR_SET,
1516                 .off1   = td_var_offset(stonewall),
1517                 .help   = "Insert a hard barrier between this job and previous",
1518         },
1519         {
1520                 .name   = "new_group",
1521                 .type   = FIO_OPT_STR_SET,
1522                 .off1   = td_var_offset(new_group),
1523                 .help   = "Mark the start of a new group (for reporting)",
1524         },
1525         {
1526                 .name   = "thread",
1527                 .type   = FIO_OPT_STR_SET,
1528                 .off1   = td_var_offset(use_thread),
1529                 .help   = "Use threads instead of forks",
1530         },
1531         {
1532                 .name   = "write_bw_log",
1533                 .type   = FIO_OPT_STR,
1534                 .off1   = td_var_offset(write_bw_log),
1535                 .cb     = str_write_bw_log_cb,
1536                 .help   = "Write log of bandwidth during run",
1537         },
1538         {
1539                 .name   = "write_lat_log",
1540                 .type   = FIO_OPT_STR,
1541                 .off1   = td_var_offset(write_lat_log),
1542                 .cb     = str_write_lat_log_cb,
1543                 .help   = "Write log of latency during run",
1544         },
1545         {
1546                 .name   = "hugepage-size",
1547                 .type   = FIO_OPT_INT,
1548                 .off1   = td_var_offset(hugepage_size),
1549                 .help   = "When using hugepages, specify size of each page",
1550                 .def    = __stringify(FIO_HUGE_PAGE),
1551         },
1552         {
1553                 .name   = "group_reporting",
1554                 .type   = FIO_OPT_STR_SET,
1555                 .off1   = td_var_offset(group_reporting),
1556                 .help   = "Do reporting on a per-group basis",
1557         },
1558         {
1559                 .name   = "zero_buffers",
1560                 .type   = FIO_OPT_STR_SET,
1561                 .off1   = td_var_offset(zero_buffers),
1562                 .help   = "Init IO buffers to all zeroes",
1563         },
1564         {
1565                 .name   = "refill_buffers",
1566                 .type   = FIO_OPT_STR_SET,
1567                 .off1   = td_var_offset(refill_buffers),
1568                 .help   = "Refill IO buffers on every IO submit",
1569         },
1570 #ifdef FIO_HAVE_DISK_UTIL
1571         {
1572                 .name   = "disk_util",
1573                 .type   = FIO_OPT_BOOL,
1574                 .off1   = td_var_offset(do_disk_util),
1575                 .help   = "Log disk utilization statistics",
1576                 .def    = "1",
1577         },
1578 #endif
1579         {
1580                 .name   = "gtod_reduce",
1581                 .type   = FIO_OPT_BOOL,
1582                 .help   = "Greatly reduce number of gettimeofday() calls",
1583                 .cb     = str_gtod_reduce_cb,
1584                 .def    = "0",
1585         },
1586         {
1587                 .name   = "disable_clat",
1588                 .type   = FIO_OPT_BOOL,
1589                 .off1   = td_var_offset(disable_clat),
1590                 .help   = "Disable completion latency numbers",
1591                 .parent = "gtod_reduce",
1592                 .def    = "0",
1593         },
1594         {
1595                 .name   = "disable_slat",
1596                 .type   = FIO_OPT_BOOL,
1597                 .off1   = td_var_offset(disable_slat),
1598                 .help   = "Disable submissionn latency numbers",
1599                 .parent = "gtod_reduce",
1600                 .def    = "0",
1601         },
1602         {
1603                 .name   = "disable_bw_measurement",
1604                 .type   = FIO_OPT_BOOL,
1605                 .off1   = td_var_offset(disable_bw),
1606                 .help   = "Disable bandwidth logging",
1607                 .parent = "gtod_reduce",
1608                 .def    = "0",
1609         },
1610         {
1611                 .name   = "gtod_cpu",
1612                 .type   = FIO_OPT_INT,
1613                 .cb     = str_gtod_cpu_cb,
1614                 .help   = "Setup dedicated gettimeofday() thread on this CPU",
1615                 .verify = gtod_cpu_verify,
1616         },
1617         {
1618                 .name   = "continue_on_error",
1619                 .type   = FIO_OPT_BOOL,
1620                 .off1   = td_var_offset(continue_on_error),
1621                 .help   = "Continue on non-fatal errors during I/O",
1622                 .def    = "0",
1623         },
1624         {
1625                 .name = NULL,
1626         },
1627 };
1628
1629 void fio_options_dup_and_init(struct option *long_options)
1630 {
1631         struct fio_option *o;
1632         unsigned int i;
1633
1634         options_init(options);
1635
1636         i = 0;
1637         while (long_options[i].name)
1638                 i++;
1639
1640         o = &options[0];
1641         while (o->name) {
1642                 long_options[i].name = (char *) o->name;
1643                 long_options[i].val = FIO_GETOPT_JOB;
1644                 if (o->type == FIO_OPT_STR_SET)
1645                         long_options[i].has_arg = no_argument;
1646                 else
1647                         long_options[i].has_arg = required_argument;
1648
1649                 i++;
1650                 o++;
1651                 assert(i < FIO_NR_OPTIONS);
1652         }
1653 }
1654
1655 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
1656 {
1657         int i, ret;
1658
1659         sort_options(opts, options, num_opts);
1660
1661         for (ret = 0, i = 0; i < num_opts; i++)
1662                 ret |= parse_option(opts[i], options, td);
1663
1664         return ret;
1665 }
1666
1667 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1668 {
1669         return parse_cmd_option(opt, val, options, td);
1670 }
1671
1672 void fio_fill_default_options(struct thread_data *td)
1673 {
1674         fill_default_options(td, options);
1675 }
1676
1677 int fio_show_option_help(const char *opt)
1678 {
1679         return show_cmd_help(options, opt);
1680 }
1681
1682 static void __options_mem(struct thread_data *td, int alloc)
1683 {
1684         struct thread_options *o = &td->o;
1685         struct fio_option *opt;
1686         char **ptr;
1687         int i;
1688
1689         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1690                 if (opt->type != FIO_OPT_STR_STORE)
1691                         continue;
1692
1693                 ptr = (void *) o + opt->off1;
1694                 if (*ptr) {
1695                         if (alloc)
1696                                 *ptr = strdup(*ptr);
1697                         else {
1698                                 free(*ptr);
1699                                 *ptr = NULL;
1700                         }
1701                 }
1702         }
1703 }
1704
1705 /*
1706  * dupe FIO_OPT_STR_STORE options
1707  */
1708 void options_mem_dupe(struct thread_data *td)
1709 {
1710         __options_mem(td, 1);
1711 }
1712
1713 void options_mem_free(struct thread_data fio_unused *td)
1714 {
1715 #if 0
1716         __options_mem(td, 0);
1717 #endif
1718 }
1719
1720 unsigned int fio_get_kb_base(void *data)
1721 {
1722         struct thread_data *td = data;
1723         unsigned int kb_base = 0;
1724
1725         if (td)
1726                 kb_base = td->o.kb_base;
1727         if (!kb_base)
1728                 kb_base = 1024;
1729
1730         return kb_base;
1731 }