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)) {
  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 #define __stringify_1(x)        #x
 631 #define __stringify(x)          __stringify_1(x)
 632
 633 /*
 634  * Map of job/command line options
 635  */
 636 static struct fio_option options[] = {
 637         {
 638                 .name   = "description",
 639                 .type   = FIO_OPT_STR_STORE,
 640                 .off1   = td_var_offset(description),
 641                 .help   = "Text job description",
 642         },
 643         {
 644                 .name   = "name",
 645                 .type   = FIO_OPT_STR_STORE,
 646                 .off1   = td_var_offset(name),
 647                 .help   = "Name of this job",
 648         },
 649         {
 650                 .name   = "directory",
 651                 .type   = FIO_OPT_STR_STORE,
 652                 .off1   = td_var_offset(directory),
 653                 .cb     = str_directory_cb,
 654                 .help   = "Directory to store files in",
 655         },
 656         {
 657                 .name   = "filename",
 658                 .type   = FIO_OPT_STR_STORE,
 659                 .off1   = td_var_offset(filename),
 660                 .cb     = str_filename_cb,
 661                 .prio   = -1, /* must come after "directory" */
 662                 .help   = "File(s) to use for the workload",
 663         },
 664         {
 665                 .name   = "lockfile",
 666                 .type   = FIO_OPT_STR,
 667                 .cb     = str_lockfile_cb,
 668                 .off1   = td_var_offset(file_lock_mode),
 669                 .help   = "Lock file when doing IO to it",
 670                 .parent = "filename",
 671                 .def    = "none",
 672                 .posval = {
 673                           { .ival = "none",
 674                             .oval = FILE_LOCK_NONE,
 675                             .help = "No file locking",
 676                           },
 677                           { .ival = "exclusive",
 678                             .oval = FILE_LOCK_EXCLUSIVE,
 679                             .help = "Exclusive file lock",
 680                           },
 681                           {
 682                             .ival = "readwrite",
 683                             .oval = FILE_LOCK_READWRITE,
 684                             .help = "Read vs write lock",
 685                           },
 686                 },
 687         },
 688         {
 689                 .name   = "opendir",
 690                 .type   = FIO_OPT_STR_STORE,
 691                 .off1   = td_var_offset(opendir),
 692                 .cb     = str_opendir_cb,
 693                 .help   = "Recursively add files from this directory and down",
 694         },
 695         {
 696                 .name   = "rw",
 697                 .alias  = "readwrite",
 698                 .type   = FIO_OPT_STR,
 699                 .cb     = str_rw_cb,
 700                 .off1   = td_var_offset(td_ddir),
 701                 .help   = "IO direction",
 702                 .def    = "read",
 703                 .verify = rw_verify,
 704                 .posval = {
 705                           { .ival = "read",
 706                             .oval = TD_DDIR_READ,
 707                             .help = "Sequential read",
 708                           },
 709                           { .ival = "write",
 710                             .oval = TD_DDIR_WRITE,
 711                             .help = "Sequential write",
 712                           },
 713                           { .ival = "randread",
 714                             .oval = TD_DDIR_RANDREAD,
 715                             .help = "Random read",
 716                           },
 717                           { .ival = "randwrite",
 718                             .oval = TD_DDIR_RANDWRITE,
 719                             .help = "Random write",
 720                           },
 721                           { .ival = "rw",
 722                             .oval = TD_DDIR_RW,
 723                             .help = "Sequential read and write mix",
 724                           },
 725                           { .ival = "randrw",
 726                             .oval = TD_DDIR_RANDRW,
 727                             .help = "Random read and write mix"
 728                           },
 729                 },
 730         },
 731         {
 732                 .name   = "ioengine",
 733                 .type   = FIO_OPT_STR_STORE,
 734                 .off1   = td_var_offset(ioengine),
 735                 .help   = "IO engine to use",
 736                 .def    = "sync",
 737                 .posval = {
 738                           { .ival = "sync",
 739                             .help = "Use read/write",
 740                           },
 741                           { .ival = "psync",
 742                             .help = "Use pread/pwrite",
 743                           },
 744                           { .ival = "vsync",
 745                              .help = "Use readv/writev",
 746                           },
 747 #ifdef FIO_HAVE_LIBAIO
 748                           { .ival = "libaio",
 749                             .help = "Linux native asynchronous IO",
 750                           },
 751 #endif
 752 #ifdef FIO_HAVE_POSIXAIO
 753                           { .ival = "posixaio",
 754                             .help = "POSIX asynchronous IO",
 755                           },
 756 #endif
 757 #ifdef FIO_HAVE_SOLARISAIO
 758                           { .ival = "solarisaio",
 759                             .help = "Solaris native asynchronous IO",
 760                           },
 761 #endif
 762                           { .ival = "mmap",
 763                             .help = "Memory mapped IO",
 764                           },
 765 #ifdef FIO_HAVE_SPLICE
 766                           { .ival = "splice",
 767                             .help = "splice/vmsplice based IO",
 768                           },
 769                           { .ival = "netsplice",
 770                             .help = "splice/vmsplice to/from the network",
 771                           },
 772 #endif
 773 #ifdef FIO_HAVE_SGIO
 774                           { .ival = "sg",
 775                             .help = "SCSI generic v3 IO",
 776                           },
 777 #endif
 778                           { .ival = "null",
 779                             .help = "Testing engine (no data transfer)",
 780                           },
 781                           { .ival = "net",
 782                             .help = "Network IO",
 783                           },
 784 #ifdef FIO_HAVE_SYSLET
 785                           { .ival = "syslet-rw",
 786                             .help = "syslet enabled async pread/pwrite IO",
 787                           },
 788 #endif
 789                           { .ival = "cpuio",
 790                             .help = "CPU cycler burner engine",
 791                           },
 792 #ifdef FIO_HAVE_GUASI
 793                           { .ival = "guasi",
 794                             .help = "GUASI IO engine",
 795                           },
 796 #endif
 797                           { .ival = "external",
 798                             .help = "Load external engine (append name)",
 799                           },
 800                 },
 801         },
 802         {
 803                 .name   = "iodepth",
 804                 .type   = FIO_OPT_INT,
 805                 .off1   = td_var_offset(iodepth),
 806                 .help   = "Amount of IO buffers to keep in flight",
 807                 .minval = 1,
 808                 .def    = "1",
 809         },
 810         {
 811                 .name   = "iodepth_batch",
 812                 .alias  = "iodepth_batch_submit",
 813                 .type   = FIO_OPT_INT,
 814                 .off1   = td_var_offset(iodepth_batch),
 815                 .help   = "Number of IO buffers to submit in one go",
 816                 .parent = "iodepth",
 817                 .minval = 1,
 818                 .def    = "1",
 819         },
 820         {
 821                 .name   = "iodepth_batch_complete",
 822                 .type   = FIO_OPT_INT,
 823                 .off1   = td_var_offset(iodepth_batch_complete),
 824                 .help   = "Number of IO buffers to retrieve in one go",
 825                 .parent = "iodepth",
 826                 .minval = 0,
 827                 .def    = "1",
 828         },
 829         {
 830                 .name   = "iodepth_low",
 831                 .type   = FIO_OPT_INT,
 832                 .off1   = td_var_offset(iodepth_low),
 833                 .help   = "Low water mark for queuing depth",
 834                 .parent = "iodepth",
 835         },
 836         {
 837                 .name   = "size",
 838                 .type   = FIO_OPT_STR_VAL,
 839                 .off1   = td_var_offset(size),
 840                 .minval = 1,
 841                 .help   = "Total size of device or files",
 842         },
 843         {
 844                 .name   = "fill_device",
 845                 .type   = FIO_OPT_BOOL,
 846                 .off1   = td_var_offset(fill_device),
 847                 .help   = "Write until an ENOSPC error occurs",
 848                 .def    = "0",
 849         },
 850         {
 851                 .name   = "filesize",
 852                 .type   = FIO_OPT_STR_VAL,
 853                 .off1   = td_var_offset(file_size_low),
 854                 .off2   = td_var_offset(file_size_high),
 855                 .minval = 1,
 856                 .help   = "Size of individual files",
 857         },
 858         {
 859                 .name   = "offset",
 860                 .alias  = "fileoffset",
 861                 .type   = FIO_OPT_STR_VAL,
 862                 .off1   = td_var_offset(start_offset),
 863                 .help   = "Start IO from this offset",
 864                 .def    = "0",
 865         },
 866         {
 867                 .name   = "bs",
 868                 .alias  = "blocksize",
 869                 .type   = FIO_OPT_INT,
 870                 .off1   = td_var_offset(bs[DDIR_READ]),
 871                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 872                 .minval = 1,
 873                 .help   = "Block size unit",
 874                 .def    = "4k",
 875                 .parent = "rw",
 876         },
 877         {
 878                 .name   = "ba",
 879                 .alias  = "blockalign",
 880                 .type   = FIO_OPT_INT,
 881                 .off1   = td_var_offset(ba[DDIR_READ]),
 882                 .off2   = td_var_offset(ba[DDIR_WRITE]),
 883                 .minval = 1,
 884                 .help   = "IO block offset alignment",
 885                 .parent = "rw",
 886         },
 887         {
 888                 .name   = "bsrange",
 889                 .alias  = "blocksize_range",
 890                 .type   = FIO_OPT_RANGE,
 891                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 892                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 893                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 894                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 895                 .minval = 1,
 896                 .help   = "Set block size range (in more detail than bs)",
 897                 .parent = "rw",
 898         },
 899         {
 900                 .name   = "bssplit",
 901                 .type   = FIO_OPT_STR,
 902                 .cb     = str_bssplit_cb,
 903                 .help   = "Set a specific mix of block sizes",
 904                 .parent = "rw",
 905         },
 906         {
 907                 .name   = "bs_unaligned",
 908                 .alias  = "blocksize_unaligned",
 909                 .type   = FIO_OPT_STR_SET,
 910                 .off1   = td_var_offset(bs_unaligned),
 911                 .help   = "Don't sector align IO buffer sizes",
 912                 .parent = "rw",
 913         },
 914         {
 915                 .name   = "randrepeat",
 916                 .type   = FIO_OPT_BOOL,
 917                 .off1   = td_var_offset(rand_repeatable),
 918                 .help   = "Use repeatable random IO pattern",
 919                 .def    = "1",
 920                 .parent = "rw",
 921         },
 922         {
 923                 .name   = "norandommap",
 924                 .type   = FIO_OPT_STR_SET,
 925                 .off1   = td_var_offset(norandommap),
 926                 .help   = "Accept potential duplicate random blocks",
 927                 .parent = "rw",
 928         },
 929         {
 930                 .name   = "softrandommap",
 931                 .type   = FIO_OPT_BOOL,
 932                 .off1   = td_var_offset(softrandommap),
 933                 .help   = "Set norandommap if randommap allocation fails",
 934                 .parent = "norandommap",
 935                 .def    = "0",
 936         },
 937         {
 938                 .name   = "nrfiles",
 939                 .type   = FIO_OPT_INT,
 940                 .off1   = td_var_offset(nr_files),
 941                 .help   = "Split job workload between this number of files",
 942                 .def    = "1",
 943         },
 944         {
 945                 .name   = "openfiles",
 946                 .type   = FIO_OPT_INT,
 947                 .off1   = td_var_offset(open_files),
 948                 .help   = "Number of files to keep open at the same time",
 949         },
 950         {
 951                 .name   = "file_service_type",
 952                 .type   = FIO_OPT_STR,
 953                 .cb     = str_fst_cb,
 954                 .off1   = td_var_offset(file_service_type),
 955                 .help   = "How to select which file to service next",
 956                 .def    = "roundrobin",
 957                 .posval = {
 958                           { .ival = "random",
 959                             .oval = FIO_FSERVICE_RANDOM,
 960                             .help = "Choose a file at random",
 961                           },
 962                           { .ival = "roundrobin",
 963                             .oval = FIO_FSERVICE_RR,
 964                             .help = "Round robin select files",
 965                           },
 966                           { .ival = "sequential",
 967                             .oval = FIO_FSERVICE_SEQ,
 968                             .help = "Finish one file before moving to the next",
 969                           },
 970                 },
 971                 .parent = "nrfiles",
 972         },
 973         {
 974                 .name   = "fadvise_hint",
 975                 .type   = FIO_OPT_BOOL,
 976                 .off1   = td_var_offset(fadvise_hint),
 977                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 978                 .def    = "1",
 979         },
 980         {
 981                 .name   = "fsync",
 982                 .type   = FIO_OPT_INT,
 983                 .off1   = td_var_offset(fsync_blocks),
 984                 .help   = "Issue fsync for writes every given number of blocks",
 985                 .def    = "0",
 986         },
 987         {
 988                 .name   = "fdatasync",
 989                 .type   = FIO_OPT_INT,
 990                 .off1   = td_var_offset(fdatasync_blocks),
 991                 .help   = "Issue fdatasync for writes every given number of blocks",
 992                 .def    = "0",
 993         },
 994         {
 995                 .name   = "direct",
 996                 .type   = FIO_OPT_BOOL,
 997                 .off1   = td_var_offset(odirect),
 998                 .help   = "Use O_DIRECT IO (negates buffered)",
 999                 .def    = "0",
1000         },
1001         {
1002                 .name   = "buffered",
1003                 .type   = FIO_OPT_BOOL,
1004                 .off1   = td_var_offset(odirect),
1005                 .neg    = 1,
1006                 .help   = "Use buffered IO (negates direct)",
1007                 .def    = "1",
1008         },
1009         {
1010                 .name   = "overwrite",
1011                 .type   = FIO_OPT_BOOL,
1012                 .off1   = td_var_offset(overwrite),
1013                 .help   = "When writing, set whether to overwrite current data",
1014                 .def    = "0",
1015         },
1016         {
1017                 .name   = "loops",
1018                 .type   = FIO_OPT_INT,
1019                 .off1   = td_var_offset(loops),
1020                 .help   = "Number of times to run the job",
1021                 .def    = "1",
1022         },
1023         {
1024                 .name   = "numjobs",
1025                 .type   = FIO_OPT_INT,
1026                 .off1   = td_var_offset(numjobs),
1027                 .help   = "Duplicate this job this many times",
1028                 .def    = "1",
1029         },
1030         {
1031                 .name   = "startdelay",
1032                 .type   = FIO_OPT_INT,
1033                 .off1   = td_var_offset(start_delay),
1034                 .help   = "Only start job when this period has passed",
1035                 .def    = "0",
1036         },
1037         {
1038                 .name   = "runtime",
1039                 .alias  = "timeout",
1040                 .type   = FIO_OPT_STR_VAL_TIME,
1041                 .off1   = td_var_offset(timeout),
1042                 .help   = "Stop workload when this amount of time has passed",
1043                 .def    = "0",
1044         },
1045         {
1046                 .name   = "time_based",
1047                 .type   = FIO_OPT_STR_SET,
1048                 .off1   = td_var_offset(time_based),
1049                 .help   = "Keep running until runtime/timeout is met",
1050         },
1051         {
1052                 .name   = "ramp_time",
1053                 .type   = FIO_OPT_STR_VAL_TIME,
1054                 .off1   = td_var_offset(ramp_time),
1055                 .help   = "Ramp up time before measuring performance",
1056         },
1057         {
1058                 .name   = "mem",
1059                 .alias  = "iomem",
1060                 .type   = FIO_OPT_STR,
1061                 .cb     = str_mem_cb,
1062                 .off1   = td_var_offset(mem_type),
1063                 .help   = "Backing type for IO buffers",
1064                 .def    = "malloc",
1065                 .posval = {
1066                           { .ival = "malloc",
1067                             .oval = MEM_MALLOC,
1068                             .help = "Use malloc(3) for IO buffers",
1069                           },
1070                           { .ival = "shm",
1071                             .oval = MEM_SHM,
1072                             .help = "Use shared memory segments for IO buffers",
1073                           },
1074 #ifdef FIO_HAVE_HUGETLB
1075                           { .ival = "shmhuge",
1076                             .oval = MEM_SHMHUGE,
1077                             .help = "Like shm, but use huge pages",
1078                           },
1079 #endif
1080                           { .ival = "mmap",
1081                             .oval = MEM_MMAP,
1082                             .help = "Use mmap(2) (file or anon) for IO buffers",
1083                           },
1084 #ifdef FIO_HAVE_HUGETLB
1085                           { .ival = "mmaphuge",
1086                             .oval = MEM_MMAPHUGE,
1087                             .help = "Like mmap, but use huge pages",
1088                           },
1089 #endif
1090                   },
1091         },
1092         {
1093                 .name   = "iomem_align",
1094                 .alias  = "mem_align",
1095                 .type   = FIO_OPT_INT,
1096                 .off1   = td_var_offset(mem_align),
1097                 .minval = 0,
1098                 .help   = "IO memory buffer offset alignment",
1099                 .def    = "0",
1100                 .parent = "iomem",
1101         },
1102         {
1103                 .name   = "verify",
1104                 .type   = FIO_OPT_STR,
1105                 .off1   = td_var_offset(verify),
1106                 .help   = "Verify data written",
1107                 .def    = "0",
1108                 .posval = {
1109                           { .ival = "0",
1110                             .oval = VERIFY_NONE,
1111                             .help = "Don't do IO verification",
1112                           },
1113                           { .ival = "md5",
1114                             .oval = VERIFY_MD5,
1115                             .help = "Use md5 checksums for verification",
1116                           },
1117                           { .ival = "crc64",
1118                             .oval = VERIFY_CRC64,
1119                             .help = "Use crc64 checksums for verification",
1120                           },
1121                           { .ival = "crc32",
1122                             .oval = VERIFY_CRC32,
1123                             .help = "Use crc32 checksums for verification",
1124                           },
1125                           { .ival = "crc32c-intel",
1126                             .oval = VERIFY_CRC32C_INTEL,
1127                             .help = "Use hw crc32c checksums for verification",
1128                           },
1129                           { .ival = "crc32c",
1130                             .oval = VERIFY_CRC32C,
1131                             .help = "Use crc32c checksums for verification",
1132                           },
1133                           { .ival = "crc16",
1134                             .oval = VERIFY_CRC16,
1135                             .help = "Use crc16 checksums for verification",
1136                           },
1137                           { .ival = "crc7",
1138                             .oval = VERIFY_CRC7,
1139                             .help = "Use crc7 checksums for verification",
1140                           },
1141                           { .ival = "sha256",
1142                             .oval = VERIFY_SHA256,
1143                             .help = "Use sha256 checksums for verification",
1144                           },
1145                           { .ival = "sha512",
1146                             .oval = VERIFY_SHA512,
1147                             .help = "Use sha512 checksums for verification",
1148                           },
1149                           { .ival = "meta",
1150                             .oval = VERIFY_META,
1151                             .help = "Use io information",
1152                           },
1153                           {
1154                             .ival = "null",
1155                             .oval = VERIFY_NULL,
1156                             .help = "Pretend to verify",
1157                           },
1158                 },
1159         },
1160         {
1161                 .name   = "do_verify",
1162                 .type   = FIO_OPT_BOOL,
1163                 .off1   = td_var_offset(do_verify),
1164                 .help   = "Run verification stage after write",
1165                 .def    = "1",
1166                 .parent = "verify",
1167         },
1168         {
1169                 .name   = "verifysort",
1170                 .type   = FIO_OPT_BOOL,
1171                 .off1   = td_var_offset(verifysort),
1172                 .help   = "Sort written verify blocks for read back",
1173                 .def    = "1",
1174                 .parent = "verify",
1175         },
1176         {
1177                 .name   = "verify_interval",
1178                 .type   = FIO_OPT_INT,
1179                 .off1   = td_var_offset(verify_interval),
1180                 .minval = 2 * sizeof(struct verify_header),
1181                 .help   = "Store verify buffer header every N bytes",
1182                 .parent = "verify",
1183         },
1184         {
1185                 .name   = "verify_offset",
1186                 .type   = FIO_OPT_INT,
1187                 .help   = "Offset verify header location by N bytes",
1188                 .def    = "0",
1189                 .cb     = str_verify_offset_cb,
1190                 .parent = "verify",
1191         },
1192         {
1193                 .name   = "verify_pattern",
1194                 .type   = FIO_OPT_INT,
1195                 .cb     = str_verify_pattern_cb,
1196                 .help   = "Fill pattern for IO buffers",
1197                 .parent = "verify",
1198         },
1199         {
1200                 .name   = "verify_fatal",
1201                 .type   = FIO_OPT_BOOL,
1202                 .off1   = td_var_offset(verify_fatal),
1203                 .def    = "0",
1204                 .help   = "Exit on a single verify failure, don't continue",
1205                 .parent = "verify",
1206         },
1207         {
1208                 .name   = "verify_async",
1209                 .type   = FIO_OPT_INT,
1210                 .off1   = td_var_offset(verify_async),
1211                 .def    = "0",
1212                 .help   = "Number of async verifier threads to use",
1213                 .parent = "verify",
1214         },
1215 #ifdef FIO_HAVE_CPU_AFFINITY
1216         {
1217                 .name   = "verify_async_cpus",
1218                 .type   = FIO_OPT_STR,
1219                 .cb     = str_verify_cpus_allowed_cb,
1220                 .help   = "Set CPUs allowed for async verify threads",
1221                 .parent = "verify_async",
1222         },
1223 #endif
1224         {
1225                 .name   = "write_iolog",
1226                 .type   = FIO_OPT_STR_STORE,
1227                 .off1   = td_var_offset(write_iolog_file),
1228                 .help   = "Store IO pattern to file",
1229         },
1230         {
1231                 .name   = "read_iolog",
1232                 .type   = FIO_OPT_STR_STORE,
1233                 .off1   = td_var_offset(read_iolog_file),
1234                 .help   = "Playback IO pattern from file",
1235         },
1236         {
1237                 .name   = "exec_prerun",
1238                 .type   = FIO_OPT_STR_STORE,
1239                 .off1   = td_var_offset(exec_prerun),
1240                 .help   = "Execute this file prior to running job",
1241         },
1242         {
1243                 .name   = "exec_postrun",
1244                 .type   = FIO_OPT_STR_STORE,
1245                 .off1   = td_var_offset(exec_postrun),
1246                 .help   = "Execute this file after running job",
1247         },
1248 #ifdef FIO_HAVE_IOSCHED_SWITCH
1249         {
1250                 .name   = "ioscheduler",
1251                 .type   = FIO_OPT_STR_STORE,
1252                 .off1   = td_var_offset(ioscheduler),
1253                 .help   = "Use this IO scheduler on the backing device",
1254         },
1255 #endif
1256         {
1257                 .name   = "zonesize",
1258                 .type   = FIO_OPT_STR_VAL,
1259                 .off1   = td_var_offset(zone_size),
1260                 .help   = "Give size of an IO zone",
1261                 .def    = "0",
1262         },
1263         {
1264                 .name   = "zoneskip",
1265                 .type   = FIO_OPT_STR_VAL,
1266                 .off1   = td_var_offset(zone_skip),
1267                 .help   = "Space between IO zones",
1268                 .def    = "0",
1269         },
1270         {
1271                 .name   = "lockmem",
1272                 .type   = FIO_OPT_STR_VAL,
1273                 .cb     = str_lockmem_cb,
1274                 .help   = "Lock down this amount of memory",
1275                 .def    = "0",
1276         },
1277         {
1278                 .name   = "rwmixread",
1279                 .type   = FIO_OPT_INT,
1280                 .cb     = str_rwmix_read_cb,
1281                 .maxval = 100,
1282                 .help   = "Percentage of mixed workload that is reads",
1283                 .def    = "50",
1284         },
1285         {
1286                 .name   = "rwmixwrite",
1287                 .type   = FIO_OPT_INT,
1288                 .cb     = str_rwmix_write_cb,
1289                 .maxval = 100,
1290                 .help   = "Percentage of mixed workload that is writes",
1291                 .def    = "50",
1292         },
1293         {
1294                 .name   = "rwmixcycle",
1295                 .type   = FIO_OPT_DEPRECATED,
1296         },
1297         {
1298                 .name   = "nice",
1299                 .type   = FIO_OPT_INT,
1300                 .off1   = td_var_offset(nice),
1301                 .help   = "Set job CPU nice value",
1302                 .minval = -19,
1303                 .maxval = 20,
1304                 .def    = "0",
1305         },
1306 #ifdef FIO_HAVE_IOPRIO
1307         {
1308                 .name   = "prio",
1309                 .type   = FIO_OPT_INT,
1310                 .cb     = str_prio_cb,
1311                 .help   = "Set job IO priority value",
1312                 .minval = 0,
1313                 .maxval = 7,
1314         },
1315         {
1316                 .name   = "prioclass",
1317                 .type   = FIO_OPT_INT,
1318                 .cb     = str_prioclass_cb,
1319                 .help   = "Set job IO priority class",
1320                 .minval = 0,
1321                 .maxval = 3,
1322         },
1323 #endif
1324         {
1325                 .name   = "thinktime",
1326                 .type   = FIO_OPT_INT,
1327                 .off1   = td_var_offset(thinktime),
1328                 .help   = "Idle time between IO buffers (usec)",
1329                 .def    = "0",
1330         },
1331         {
1332                 .name   = "thinktime_spin",
1333                 .type   = FIO_OPT_INT,
1334                 .off1   = td_var_offset(thinktime_spin),
1335                 .help   = "Start think time by spinning this amount (usec)",
1336                 .def    = "0",
1337                 .parent = "thinktime",
1338         },
1339         {
1340                 .name   = "thinktime_blocks",
1341                 .type   = FIO_OPT_INT,
1342                 .off1   = td_var_offset(thinktime_blocks),
1343                 .help   = "IO buffer period between 'thinktime'",
1344                 .def    = "1",
1345                 .parent = "thinktime",
1346         },
1347         {
1348                 .name   = "rate",
1349                 .type   = FIO_OPT_INT,
1350                 .off1   = td_var_offset(rate[0]),
1351                 .off2   = td_var_offset(rate[1]),
1352                 .help   = "Set bandwidth rate",
1353         },
1354         {
1355                 .name   = "ratemin",
1356                 .type   = FIO_OPT_INT,
1357                 .off1   = td_var_offset(ratemin[0]),
1358                 .off2   = td_var_offset(ratemin[1]),
1359                 .help   = "Job must meet this rate or it will be shutdown",
1360                 .parent = "rate",
1361         },
1362         {
1363                 .name   = "rate_iops",
1364                 .type   = FIO_OPT_INT,
1365                 .off1   = td_var_offset(rate_iops[0]),
1366                 .off2   = td_var_offset(rate_iops[1]),
1367                 .help   = "Limit IO used to this number of IO operations/sec",
1368         },
1369         {
1370                 .name   = "rate_iops_min",
1371                 .type   = FIO_OPT_INT,
1372                 .off1   = td_var_offset(rate_iops_min[0]),
1373                 .off2   = td_var_offset(rate_iops_min[1]),
1374                 .help   = "Job must meet this rate or it will be shutdown",
1375                 .parent = "rate_iops",
1376         },
1377         {
1378                 .name   = "ratecycle",
1379                 .type   = FIO_OPT_INT,
1380                 .off1   = td_var_offset(ratecycle),
1381                 .help   = "Window average for rate limits (msec)",
1382                 .def    = "1000",
1383                 .parent = "rate",
1384         },
1385         {
1386                 .name   = "invalidate",
1387                 .type   = FIO_OPT_BOOL,
1388                 .off1   = td_var_offset(invalidate_cache),
1389                 .help   = "Invalidate buffer/page cache prior to running job",
1390                 .def    = "1",
1391         },
1392         {
1393                 .name   = "sync",
1394                 .type   = FIO_OPT_BOOL,
1395                 .off1   = td_var_offset(sync_io),
1396                 .help   = "Use O_SYNC for buffered writes",
1397                 .def    = "0",
1398                 .parent = "buffered",
1399         },
1400         {
1401                 .name   = "bwavgtime",
1402                 .type   = FIO_OPT_INT,
1403                 .off1   = td_var_offset(bw_avg_time),
1404                 .help   = "Time window over which to calculate bandwidth"
1405                           " (msec)",
1406                 .def    = "500",
1407         },
1408         {
1409                 .name   = "create_serialize",
1410                 .type   = FIO_OPT_BOOL,
1411                 .off1   = td_var_offset(create_serialize),
1412                 .help   = "Serialize creating of job files",
1413                 .def    = "1",
1414         },
1415         {
1416                 .name   = "create_fsync",
1417                 .type   = FIO_OPT_BOOL,
1418                 .off1   = td_var_offset(create_fsync),
1419                 .help   = "Fsync file after creation",
1420                 .def    = "1",
1421         },
1422         {
1423                 .name   = "create_on_open",
1424                 .type   = FIO_OPT_BOOL,
1425                 .off1   = td_var_offset(create_on_open),
1426                 .help   = "Create files when they are opened for IO",
1427                 .def    = "0",
1428         },
1429         {
1430                 .name   = "pre_read",
1431                 .type   = FIO_OPT_BOOL,
1432                 .off1   = td_var_offset(pre_read),
1433                 .help   = "Preread files before starting official testing",
1434                 .def    = "0",
1435         },
1436         {
1437                 .name   = "cpuload",
1438                 .type   = FIO_OPT_INT,
1439                 .off1   = td_var_offset(cpuload),
1440                 .help   = "Use this percentage of CPU",
1441         },
1442         {
1443                 .name   = "cpuchunks",
1444                 .type   = FIO_OPT_INT,
1445                 .off1   = td_var_offset(cpucycle),
1446                 .help   = "Length of the CPU burn cycles (usecs)",
1447                 .def    = "50000",
1448                 .parent = "cpuload",
1449         },
1450 #ifdef FIO_HAVE_CPU_AFFINITY
1451         {
1452                 .name   = "cpumask",
1453                 .type   = FIO_OPT_INT,
1454                 .cb     = str_cpumask_cb,
1455                 .help   = "CPU affinity mask",
1456         },
1457         {
1458                 .name   = "cpus_allowed",
1459                 .type   = FIO_OPT_STR,
1460                 .cb     = str_cpus_allowed_cb,
1461                 .help   = "Set CPUs allowed",
1462         },
1463 #endif
1464         {
1465                 .name   = "end_fsync",
1466                 .type   = FIO_OPT_BOOL,
1467                 .off1   = td_var_offset(end_fsync),
1468                 .help   = "Include fsync at the end of job",
1469                 .def    = "0",
1470         },
1471         {
1472                 .name   = "fsync_on_close",
1473                 .type   = FIO_OPT_BOOL,
1474                 .off1   = td_var_offset(fsync_on_close),
1475                 .help   = "fsync files on close",
1476                 .def    = "0",
1477         },
1478         {
1479                 .name   = "unlink",
1480                 .type   = FIO_OPT_BOOL,
1481                 .off1   = td_var_offset(unlink),
1482                 .help   = "Unlink created files after job has completed",
1483                 .def    = "0",
1484         },
1485         {
1486                 .name   = "exitall",
1487                 .type   = FIO_OPT_STR_SET,
1488                 .cb     = str_exitall_cb,
1489                 .help   = "Terminate all jobs when one exits",
1490         },
1491         {
1492                 .name   = "stonewall",
1493                 .type   = FIO_OPT_STR_SET,
1494                 .off1   = td_var_offset(stonewall),
1495                 .help   = "Insert a hard barrier between this job and previous",
1496         },
1497         {
1498                 .name   = "new_group",
1499                 .type   = FIO_OPT_STR_SET,
1500                 .off1   = td_var_offset(new_group),
1501                 .help   = "Mark the start of a new group (for reporting)",
1502         },
1503         {
1504                 .name   = "thread",
1505                 .type   = FIO_OPT_STR_SET,
1506                 .off1   = td_var_offset(use_thread),
1507                 .help   = "Use threads instead of forks",
1508         },
1509         {
1510                 .name   = "write_bw_log",
1511                 .type   = FIO_OPT_STR,
1512                 .off1   = td_var_offset(write_bw_log),
1513                 .cb     = str_write_bw_log_cb,
1514                 .help   = "Write log of bandwidth during run",
1515         },
1516         {
1517                 .name   = "write_lat_log",
1518                 .type   = FIO_OPT_STR,
1519                 .off1   = td_var_offset(write_lat_log),
1520                 .cb     = str_write_lat_log_cb,
1521                 .help   = "Write log of latency during run",
1522         },
1523         {
1524                 .name   = "hugepage-size",
1525                 .type   = FIO_OPT_INT,
1526                 .off1   = td_var_offset(hugepage_size),
1527                 .help   = "When using hugepages, specify size of each page",
1528                 .def    = __stringify(FIO_HUGE_PAGE),
1529         },
1530         {
1531                 .name   = "group_reporting",
1532                 .type   = FIO_OPT_STR_SET,
1533                 .off1   = td_var_offset(group_reporting),
1534                 .help   = "Do reporting on a per-group basis",
1535         },
1536         {
1537                 .name   = "zero_buffers",
1538                 .type   = FIO_OPT_STR_SET,
1539                 .off1   = td_var_offset(zero_buffers),
1540                 .help   = "Init IO buffers to all zeroes",
1541         },
1542         {
1543                 .name   = "refill_buffers",
1544                 .type   = FIO_OPT_STR_SET,
1545                 .off1   = td_var_offset(refill_buffers),
1546                 .help   = "Refill IO buffers on every IO submit",
1547         },
1548 #ifdef FIO_HAVE_DISK_UTIL
1549         {
1550                 .name   = "disk_util",
1551                 .type   = FIO_OPT_BOOL,
1552                 .off1   = td_var_offset(do_disk_util),
1553                 .help   = "Log disk utilization statistics",
1554                 .def    = "1",
1555         },
1556 #endif
1557         {
1558                 .name   = "gtod_reduce",
1559                 .type   = FIO_OPT_BOOL,
1560                 .help   = "Greatly reduce number of gettimeofday() calls",
1561                 .cb     = str_gtod_reduce_cb,
1562                 .def    = "0",
1563         },
1564         {
1565                 .name   = "disable_clat",
1566                 .type   = FIO_OPT_BOOL,
1567                 .off1   = td_var_offset(disable_clat),
1568                 .help   = "Disable completion latency numbers",
1569                 .parent = "gtod_reduce",
1570                 .def    = "0",
1571         },
1572         {
1573                 .name   = "disable_slat",
1574                 .type   = FIO_OPT_BOOL,
1575                 .off1   = td_var_offset(disable_slat),
1576                 .help   = "Disable submissionn latency numbers",
1577                 .parent = "gtod_reduce",
1578                 .def    = "0",
1579         },
1580         {
1581                 .name   = "disable_bw_measurement",
1582                 .type   = FIO_OPT_BOOL,
1583                 .off1   = td_var_offset(disable_bw),
1584                 .help   = "Disable bandwidth logging",
1585                 .parent = "gtod_reduce",
1586                 .def    = "0",
1587         },
1588         {
1589                 .name   = "gtod_cpu",
1590                 .type   = FIO_OPT_INT,
1591                 .cb     = str_gtod_cpu_cb,
1592                 .help   = "Setup dedicated gettimeofday() thread on this CPU",
1593                 .verify = gtod_cpu_verify,
1594         },
1595         {
1596                 .name   = "continue_on_error",
1597                 .type   = FIO_OPT_BOOL,
1598                 .off1   = td_var_offset(continue_on_error),
1599                 .help   = "Continue on non-fatal errors during I/O",
1600                 .def    = "0",
1601         },
1602         {
1603                 .name = NULL,
1604         },
1605 };
1606
1607 void fio_options_dup_and_init(struct option *long_options)
1608 {
1609         struct fio_option *o;
1610         unsigned int i;
1611
1612         options_init(options);
1613
1614         i = 0;
1615         while (long_options[i].name)
1616                 i++;
1617
1618         o = &options[0];
1619         while (o->name) {
1620                 long_options[i].name = (char *) o->name;
1621                 long_options[i].val = FIO_GETOPT_JOB;
1622                 if (o->type == FIO_OPT_STR_SET)
1623                         long_options[i].has_arg = no_argument;
1624                 else
1625                         long_options[i].has_arg = required_argument;
1626
1627                 i++;
1628                 o++;
1629                 assert(i < FIO_NR_OPTIONS);
1630         }
1631 }
1632
1633 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
1634 {
1635         int i, ret;
1636
1637         sort_options(opts, options, num_opts);
1638
1639         for (ret = 0, i = 0; i < num_opts; i++)
1640                 ret |= parse_option(opts[i], options, td);
1641
1642         return ret;
1643 }
1644
1645 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1646 {
1647         return parse_cmd_option(opt, val, options, td);
1648 }
1649
1650 void fio_fill_default_options(struct thread_data *td)
1651 {
1652         fill_default_options(td, options);
1653 }
1654
1655 int fio_show_option_help(const char *opt)
1656 {
1657         return show_cmd_help(options, opt);
1658 }
1659
1660 static void __options_mem(struct thread_data *td, int alloc)
1661 {
1662         struct thread_options *o = &td->o;
1663         struct fio_option *opt;
1664         char **ptr;
1665         int i;
1666
1667         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1668                 if (opt->type != FIO_OPT_STR_STORE)
1669                         continue;
1670
1671                 ptr = (void *) o + opt->off1;
1672                 if (*ptr) {
1673                         if (alloc)
1674                                 *ptr = strdup(*ptr);
1675                         else {
1676                                 free(*ptr);
1677                                 *ptr = NULL;
1678                         }
1679                 }
1680         }
1681 }
1682
1683 /*
1684  * dupe FIO_OPT_STR_STORE options
1685  */
1686 void options_mem_dupe(struct thread_data *td)
1687 {
1688         __options_mem(td, 1);
1689 }
1690
1691 void options_mem_free(struct thread_data fio_unused *td)
1692 {
1693 #if 0
1694         __options_mem(td, 0);
1695 #endif
1696 }