options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  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 converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 180                 if (!ret) {
 181                         *odir = '\0';
 182                         ret = bssplit_ddir(td, DDIR_READ, str);
 183                 }
 184         } else {
 185                 char *op;
 186
 187                 op = strdup(str);
 188
 189                 ret = bssplit_ddir(td, DDIR_READ, str);
 190                 if (!ret)
 191                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 192
 193                 free(op);
 194         }
 195
 196         free(p);
 197         return ret;
 198 }
 199
 200 static int str_rw_cb(void *data, const char *str)
 201 {
 202         struct thread_data *td = data;
 203         char *nr = get_opt_postfix(str);
 204
 205         td->o.ddir_seq_nr = 1;
 206         td->o.ddir_seq_add = 0;
 207
 208         if (!nr)
 209                 return 0;
 210
 211         if (td_random(td))
 212                 td->o.ddir_seq_nr = atoi(nr);
 213         else {
 214                 long long val;
 215
 216                 if (str_to_decimal(nr, &val, 1, td)) {
 217                         log_err("fio: rw postfix parsing failed\n");
 218                         free(nr);
 219                         return 1;
 220                 }
 221
 222                 td->o.ddir_seq_add = val;
 223         }
 224
 225         free(nr);
 226         return 0;
 227 }
 228
 229 static int str_mem_cb(void *data, const char *mem)
 230 {
 231         struct thread_data *td = data;
 232
 233         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 234                 td->mmapfile = get_opt_postfix(mem);
 235                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 236                         log_err("fio: mmaphuge:/path/to/file\n");
 237                         return 1;
 238                 }
 239         }
 240
 241         return 0;
 242 }
 243
 244 static int str_verify_cb(void *data, const char *mem)
 245 {
 246         struct thread_data *td = data;
 247
 248         if (td->o.verify == VERIFY_CRC32C_INTEL ||
 249             td->o.verify == VERIFY_CRC32C) {
 250                 crc32c_intel_probe();
 251         }
 252
 253         return 0;
 254 }
 255
 256 static int fio_clock_source_cb(void *data, const char *str)
 257 {
 258         struct thread_data *td = data;
 259
 260         fio_clock_source = td->o.clocksource;
 261         fio_time_init();
 262         return 0;
 263 }
 264
 265 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 266 {
 267         mlock_size = *val;
 268         return 0;
 269 }
 270
 271 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 272 {
 273         struct thread_data *td = data;
 274
 275         td->o.rwmix[DDIR_READ] = *val;
 276         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 277         return 0;
 278 }
 279
 280 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 281 {
 282         struct thread_data *td = data;
 283
 284         td->o.rwmix[DDIR_WRITE] = *val;
 285         td->o.rwmix[DDIR_READ] = 100 - *val;
 286         return 0;
 287 }
 288
 289 #ifdef FIO_HAVE_IOPRIO
 290 static int str_prioclass_cb(void *data, unsigned long long *val)
 291 {
 292         struct thread_data *td = data;
 293         unsigned short mask;
 294
 295         /*
 296          * mask off old class bits, str_prio_cb() may have set a default class
 297          */
 298         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 299         td->ioprio &= mask;
 300
 301         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 302         td->ioprio_set = 1;
 303         return 0;
 304 }
 305
 306 static int str_prio_cb(void *data, unsigned long long *val)
 307 {
 308         struct thread_data *td = data;
 309
 310         td->ioprio |= *val;
 311
 312         /*
 313          * If no class is set, assume BE
 314          */
 315         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 316                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 317
 318         td->ioprio_set = 1;
 319         return 0;
 320 }
 321 #endif
 322
 323 static int str_exitall_cb(void)
 324 {
 325         exitall_on_terminate = 1;
 326         return 0;
 327 }
 328
 329 #ifdef FIO_HAVE_CPU_AFFINITY
 330 static int str_cpumask_cb(void *data, unsigned long long *val)
 331 {
 332         struct thread_data *td = data;
 333         unsigned int i;
 334         long max_cpu;
 335         int ret;
 336
 337         ret = fio_cpuset_init(&td->o.cpumask);
 338         if (ret < 0) {
 339                 log_err("fio: cpuset_init failed\n");
 340                 td_verror(td, ret, "fio_cpuset_init");
 341                 return 1;
 342         }
 343
 344         max_cpu = cpus_online();
 345
 346         for (i = 0; i < sizeof(int) * 8; i++) {
 347                 if ((1 << i) & *val) {
 348                         if (i > max_cpu) {
 349                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 350                                                                 max_cpu);
 351                                 return 1;
 352                         }
 353                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 354                         fio_cpu_set(&td->o.cpumask, i);
 355                 }
 356         }
 357
 358         td->o.cpumask_set = 1;
 359         return 0;
 360 }
 361
 362 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 363                             const char *input)
 364 {
 365         char *cpu, *str, *p;
 366         long max_cpu;
 367         int ret = 0;
 368
 369         ret = fio_cpuset_init(mask);
 370         if (ret < 0) {
 371                 log_err("fio: cpuset_init failed\n");
 372                 td_verror(td, ret, "fio_cpuset_init");
 373                 return 1;
 374         }
 375
 376         p = str = strdup(input);
 377
 378         strip_blank_front(&str);
 379         strip_blank_end(str);
 380
 381         max_cpu = cpus_online();
 382
 383         while ((cpu = strsep(&str, ",")) != NULL) {
 384                 char *str2, *cpu2;
 385                 int icpu, icpu2;
 386
 387                 if (!strlen(cpu))
 388                         break;
 389
 390                 str2 = cpu;
 391                 icpu2 = -1;
 392                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 393                         if (!strlen(cpu2))
 394                                 break;
 395
 396                         icpu2 = atoi(cpu2);
 397                 }
 398
 399                 icpu = atoi(cpu);
 400                 if (icpu2 == -1)
 401                         icpu2 = icpu;
 402                 while (icpu <= icpu2) {
 403                         if (icpu >= FIO_MAX_CPUS) {
 404                                 log_err("fio: your OS only supports up to"
 405                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 406                                 ret = 1;
 407                                 break;
 408                         }
 409                         if (icpu > max_cpu) {
 410                                 log_err("fio: CPU %d too large (max=%ld)\n",
 411                                                         icpu, max_cpu);
 412                                 ret = 1;
 413                                 break;
 414                         }
 415
 416                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 417                         fio_cpu_set(mask, icpu);
 418                         icpu++;
 419                 }
 420                 if (ret)
 421                         break;
 422         }
 423
 424         free(p);
 425         if (!ret)
 426                 td->o.cpumask_set = 1;
 427         return ret;
 428 }
 429
 430 static int str_cpus_allowed_cb(void *data, const char *input)
 431 {
 432         struct thread_data *td = data;
 433         int ret;
 434
 435         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 436         if (!ret)
 437                 td->o.cpumask_set = 1;
 438
 439         return ret;
 440 }
 441
 442 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 443 {
 444         struct thread_data *td = data;
 445         int ret;
 446
 447         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 448         if (!ret)
 449                 td->o.verify_cpumask_set = 1;
 450
 451         return ret;
 452 }
 453 #endif
 454
 455 #ifdef FIO_HAVE_TRIM
 456 static int str_verify_trim_cb(void *data, unsigned long long *val)
 457 {
 458         struct thread_data *td = data;
 459
 460         td->o.trim_percentage = *val;
 461         return 0;
 462 }
 463 #endif
 464
 465 static int str_fst_cb(void *data, const char *str)
 466 {
 467         struct thread_data *td = data;
 468         char *nr = get_opt_postfix(str);
 469
 470         td->file_service_nr = 1;
 471         if (nr) {
 472                 td->file_service_nr = atoi(nr);
 473                 free(nr);
 474         }
 475
 476         return 0;
 477 }
 478
 479 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 480 static int str_sfr_cb(void *data, const char *str)
 481 {
 482         struct thread_data *td = data;
 483         char *nr = get_opt_postfix(str);
 484
 485         td->sync_file_range_nr = 1;
 486         if (nr) {
 487                 td->sync_file_range_nr = atoi(nr);
 488                 free(nr);
 489         }
 490
 491         return 0;
 492 }
 493 #endif
 494
 495 static int check_dir(struct thread_data *td, char *fname)
 496 {
 497 #if 0
 498         char file[PATH_MAX], *dir;
 499         int elen = 0;
 500
 501         if (td->o.directory) {
 502                 strcpy(file, td->o.directory);
 503                 strcat(file, "/");
 504                 elen = strlen(file);
 505         }
 506
 507         sprintf(file + elen, "%s", fname);
 508         dir = dirname(file);
 509
 510         {
 511         struct stat sb;
 512         /*
 513          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 514          * yet, so we can't do this check right here...
 515          */
 516         if (lstat(dir, &sb) < 0) {
 517                 int ret = errno;
 518
 519                 log_err("fio: %s is not a directory\n", dir);
 520                 td_verror(td, ret, "lstat");
 521                 return 1;
 522         }
 523
 524         if (!S_ISDIR(sb.st_mode)) {
 525                 log_err("fio: %s is not a directory\n", dir);
 526                 return 1;
 527         }
 528         }
 529 #endif
 530
 531         return 0;
 532 }
 533
 534 /*
 535  * Return next file in the string. Files are separated with ':'. If the ':'
 536  * is escaped with a '\', then that ':' is part of the filename and does not
 537  * indicate a new file.
 538  */
 539 static char *get_next_file_name(char **ptr)
 540 {
 541         char *str = *ptr;
 542         char *p, *start;
 543
 544         if (!str || !strlen(str))
 545                 return NULL;
 546
 547         start = str;
 548         do {
 549                 /*
 550                  * No colon, we are done
 551                  */
 552                 p = strchr(str, ':');
 553                 if (!p) {
 554                         *ptr = NULL;
 555                         break;
 556                 }
 557
 558                 /*
 559                  * We got a colon, but it's the first character. Skip and
 560                  * continue
 561                  */
 562                 if (p == start) {
 563                         str = ++start;
 564                         continue;
 565                 }
 566
 567                 if (*(p - 1) != '\\') {
 568                         *p = '\0';
 569                         *ptr = p + 1;
 570                         break;
 571                 }
 572
 573                 memmove(p - 1, p, strlen(p) + 1);
 574                 str = p;
 575         } while (1);
 576
 577         return start;
 578 }
 579
 580 static int str_filename_cb(void *data, const char *input)
 581 {
 582         struct thread_data *td = data;
 583         char *fname, *str, *p;
 584
 585         p = str = strdup(input);
 586
 587         strip_blank_front(&str);
 588         strip_blank_end(str);
 589
 590         if (!td->files_index)
 591                 td->o.nr_files = 0;
 592
 593         while ((fname = get_next_file_name(&str)) != NULL) {
 594                 if (!strlen(fname))
 595                         break;
 596                 if (check_dir(td, fname)) {
 597                         free(p);
 598                         return 1;
 599                 }
 600                 add_file(td, fname);
 601                 td->o.nr_files++;
 602         }
 603
 604         free(p);
 605         return 0;
 606 }
 607
 608 static int str_directory_cb(void *data, const char fio_unused *str)
 609 {
 610         struct thread_data *td = data;
 611         struct stat sb;
 612
 613         if (lstat(td->o.directory, &sb) < 0) {
 614                 int ret = errno;
 615
 616                 log_err("fio: %s is not a directory\n", td->o.directory);
 617                 td_verror(td, ret, "lstat");
 618                 return 1;
 619         }
 620         if (!S_ISDIR(sb.st_mode)) {
 621                 log_err("fio: %s is not a directory\n", td->o.directory);
 622                 return 1;
 623         }
 624
 625         return 0;
 626 }
 627
 628 static int str_opendir_cb(void *data, const char fio_unused *str)
 629 {
 630         struct thread_data *td = data;
 631
 632         if (!td->files_index)
 633                 td->o.nr_files = 0;
 634
 635         return add_dir_files(td, td->o.opendir);
 636 }
 637
 638 static int str_verify_offset_cb(void *data, unsigned long long *off)
 639 {
 640         struct thread_data *td = data;
 641
 642         if (*off && *off < sizeof(struct verify_header)) {
 643                 log_err("fio: verify_offset too small\n");
 644                 return 1;
 645         }
 646
 647         td->o.verify_offset = *off;
 648         return 0;
 649 }
 650
 651 static int str_verify_pattern_cb(void *data, const char *input)
 652 {
 653         struct thread_data *td = data;
 654         long off;
 655         int i = 0, j = 0, len, k, base = 10;
 656         char* loc1, * loc2;
 657
 658         loc1 = strstr(input, "0x");
 659         loc2 = strstr(input, "0X");
 660         if (loc1 || loc2)
 661                 base = 16;
 662         off = strtol(input, NULL, base);
 663         if (off != LONG_MAX || errno != ERANGE) {
 664                 while (off) {
 665                         td->o.verify_pattern[i] = off & 0xff;
 666                         off >>= 8;
 667                         i++;
 668                 }
 669         } else {
 670                 len = strlen(input);
 671                 k = len - 1;
 672                 if (base == 16) {
 673                         if (loc1)
 674                                 j = loc1 - input + 2;
 675                         else
 676                                 j = loc2 - input + 2;
 677                 } else
 678                         return 1;
 679                 if (len - j < MAX_PATTERN_SIZE * 2) {
 680                         while (k >= j) {
 681                                 off = converthexchartoint(input[k--]);
 682                                 if (k >= j)
 683                                         off += (converthexchartoint(input[k--])
 684                                                 * 16);
 685                                 td->o.verify_pattern[i++] = (char) off;
 686                         }
 687                 }
 688         }
 689
 690         /*
 691          * Fill the pattern all the way to the end. This greatly reduces
 692          * the number of memcpy's we have to do when verifying the IO.
 693          */
 694         while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
 695                 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
 696                 i *= 2;
 697         }
 698         if (i == 1) {
 699                 /*
 700                  * The code in verify_io_u_pattern assumes a single byte pattern
 701                  * fills the whole verify pattern buffer.
 702                  */
 703                 memset(td->o.verify_pattern, td->o.verify_pattern[0],
 704                        MAX_PATTERN_SIZE);
 705         }
 706
 707         td->o.verify_pattern_bytes = i;
 708
 709         /*
 710          * VERIFY_META could already be set
 711          */
 712         if (td->o.verify == VERIFY_NONE)
 713                 td->o.verify = VERIFY_PATTERN;
 714
 715         return 0;
 716 }
 717
 718 static int str_lockfile_cb(void *data, const char *str)
 719 {
 720         struct thread_data *td = data;
 721         char *nr = get_opt_postfix(str);
 722
 723         td->o.lockfile_batch = 1;
 724         if (nr) {
 725                 td->o.lockfile_batch = atoi(nr);
 726                 free(nr);
 727         }
 728
 729         return 0;
 730 }
 731
 732 static int str_write_bw_log_cb(void *data, const char *str)
 733 {
 734         struct thread_data *td = data;
 735
 736         if (str)
 737                 td->o.bw_log_file = strdup(str);
 738
 739         td->o.write_bw_log = 1;
 740         return 0;
 741 }
 742
 743 static int str_write_lat_log_cb(void *data, const char *str)
 744 {
 745         struct thread_data *td = data;
 746
 747         if (str)
 748                 td->o.lat_log_file = strdup(str);
 749
 750         td->o.write_lat_log = 1;
 751         return 0;
 752 }
 753
 754 static int str_write_iops_log_cb(void *data, const char *str)
 755 {
 756         struct thread_data *td = data;
 757
 758         if (str)
 759                 td->o.iops_log_file = strdup(str);
 760
 761         td->o.write_iops_log = 1;
 762         return 0;
 763 }
 764
 765 static int str_gtod_reduce_cb(void *data, int *il)
 766 {
 767         struct thread_data *td = data;
 768         int val = *il;
 769
 770         td->o.disable_lat = !!val;
 771         td->o.disable_clat = !!val;
 772         td->o.disable_slat = !!val;
 773         td->o.disable_bw = !!val;
 774         td->o.clat_percentiles = !val;
 775         if (val)
 776                 td->tv_cache_mask = 63;
 777
 778         return 0;
 779 }
 780
 781 static int str_gtod_cpu_cb(void *data, long long *il)
 782 {
 783         struct thread_data *td = data;
 784         int val = *il;
 785
 786         td->o.gtod_cpu = val;
 787         td->o.gtod_offload = 1;
 788         return 0;
 789 }
 790
 791 static int str_size_cb(void *data, unsigned long long *__val)
 792 {
 793         struct thread_data *td = data;
 794         unsigned long long v = *__val;
 795
 796         if (parse_is_percent(v)) {
 797                 td->o.size = 0;
 798                 td->o.size_percent = -1ULL - v;
 799         } else
 800                 td->o.size = v;
 801
 802         return 0;
 803 }
 804
 805 static int rw_verify(struct fio_option *o, void *data)
 806 {
 807         struct thread_data *td = data;
 808
 809         if (read_only && td_write(td)) {
 810                 log_err("fio: job <%s> has write bit set, but fio is in"
 811                         " read-only mode\n", td->o.name);
 812                 return 1;
 813         }
 814
 815         return 0;
 816 }
 817
 818 static int gtod_cpu_verify(struct fio_option *o, void *data)
 819 {
 820 #ifndef FIO_HAVE_CPU_AFFINITY
 821         struct thread_data *td = data;
 822
 823         if (td->o.gtod_cpu) {
 824                 log_err("fio: platform must support CPU affinity for"
 825                         "gettimeofday() offloading\n");
 826                 return 1;
 827         }
 828 #endif
 829
 830         return 0;
 831 }
 832
 833 static int kb_base_verify(struct fio_option *o, void *data)
 834 {
 835         struct thread_data *td = data;
 836
 837         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
 838                 log_err("fio: kb_base set to nonsensical value: %u\n",
 839                                 td->o.kb_base);
 840                 return 1;
 841         }
 842
 843         return 0;
 844 }
 845
 846 /*
 847  * Map of job/command line options
 848  */
 849 static struct fio_option options[FIO_MAX_OPTS] = {
 850         {
 851                 .name   = "description",
 852                 .type   = FIO_OPT_STR_STORE,
 853                 .off1   = td_var_offset(description),
 854                 .help   = "Text job description",
 855         },
 856         {
 857                 .name   = "name",
 858                 .type   = FIO_OPT_STR_STORE,
 859                 .off1   = td_var_offset(name),
 860                 .help   = "Name of this job",
 861         },
 862         {
 863                 .name   = "directory",
 864                 .type   = FIO_OPT_STR_STORE,
 865                 .off1   = td_var_offset(directory),
 866                 .cb     = str_directory_cb,
 867                 .help   = "Directory to store files in",
 868         },
 869         {
 870                 .name   = "filename",
 871                 .type   = FIO_OPT_STR_STORE,
 872                 .off1   = td_var_offset(filename),
 873                 .cb     = str_filename_cb,
 874                 .prio   = -1, /* must come after "directory" */
 875                 .help   = "File(s) to use for the workload",
 876         },
 877         {
 878                 .name   = "kb_base",
 879                 .type   = FIO_OPT_INT,
 880                 .off1   = td_var_offset(kb_base),
 881                 .verify = kb_base_verify,
 882                 .prio   = 1,
 883                 .def    = "1024",
 884                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
 885         },
 886         {
 887                 .name   = "lockfile",
 888                 .type   = FIO_OPT_STR,
 889                 .cb     = str_lockfile_cb,
 890                 .off1   = td_var_offset(file_lock_mode),
 891                 .help   = "Lock file when doing IO to it",
 892                 .parent = "filename",
 893                 .def    = "none",
 894                 .posval = {
 895                           { .ival = "none",
 896                             .oval = FILE_LOCK_NONE,
 897                             .help = "No file locking",
 898                           },
 899                           { .ival = "exclusive",
 900                             .oval = FILE_LOCK_EXCLUSIVE,
 901                             .help = "Exclusive file lock",
 902                           },
 903                           {
 904                             .ival = "readwrite",
 905                             .oval = FILE_LOCK_READWRITE,
 906                             .help = "Read vs write lock",
 907                           },
 908                 },
 909         },
 910         {
 911                 .name   = "opendir",
 912                 .type   = FIO_OPT_STR_STORE,
 913                 .off1   = td_var_offset(opendir),
 914                 .cb     = str_opendir_cb,
 915                 .help   = "Recursively add files from this directory and down",
 916         },
 917         {
 918                 .name   = "rw",
 919                 .alias  = "readwrite",
 920                 .type   = FIO_OPT_STR,
 921                 .cb     = str_rw_cb,
 922                 .off1   = td_var_offset(td_ddir),
 923                 .help   = "IO direction",
 924                 .def    = "read",
 925                 .verify = rw_verify,
 926                 .posval = {
 927                           { .ival = "read",
 928                             .oval = TD_DDIR_READ,
 929                             .help = "Sequential read",
 930                           },
 931                           { .ival = "write",
 932                             .oval = TD_DDIR_WRITE,
 933                             .help = "Sequential write",
 934                           },
 935                           { .ival = "randread",
 936                             .oval = TD_DDIR_RANDREAD,
 937                             .help = "Random read",
 938                           },
 939                           { .ival = "randwrite",
 940                             .oval = TD_DDIR_RANDWRITE,
 941                             .help = "Random write",
 942                           },
 943                           { .ival = "rw",
 944                             .oval = TD_DDIR_RW,
 945                             .help = "Sequential read and write mix",
 946                           },
 947                           { .ival = "readwrite",
 948                             .oval = TD_DDIR_RW,
 949                             .help = "Sequential read and write mix",
 950                           },
 951                           { .ival = "randrw",
 952                             .oval = TD_DDIR_RANDRW,
 953                             .help = "Random read and write mix"
 954                           },
 955                 },
 956         },
 957         {
 958                 .name   = "rw_sequencer",
 959                 .type   = FIO_OPT_STR,
 960                 .off1   = td_var_offset(rw_seq),
 961                 .help   = "IO offset generator modifier",
 962                 .def    = "sequential",
 963                 .posval = {
 964                           { .ival = "sequential",
 965                             .oval = RW_SEQ_SEQ,
 966                             .help = "Generate sequential offsets",
 967                           },
 968                           { .ival = "identical",
 969                             .oval = RW_SEQ_IDENT,
 970                             .help = "Generate identical offsets",
 971                           },
 972                 },
 973         },
 974
 975         {
 976                 .name   = "ioengine",
 977                 .type   = FIO_OPT_STR_STORE,
 978                 .off1   = td_var_offset(ioengine),
 979                 .help   = "IO engine to use",
 980                 .def    = FIO_PREFERRED_ENGINE,
 981                 .posval = {
 982                           { .ival = "sync",
 983                             .help = "Use read/write",
 984                           },
 985                           { .ival = "psync",
 986                             .help = "Use pread/pwrite",
 987                           },
 988                           { .ival = "vsync",
 989                             .help = "Use readv/writev",
 990                           },
 991 #ifdef FIO_HAVE_LIBAIO
 992                           { .ival = "libaio",
 993                             .help = "Linux native asynchronous IO",
 994                           },
 995 #endif
 996 #ifdef FIO_HAVE_POSIXAIO
 997                           { .ival = "posixaio",
 998                             .help = "POSIX asynchronous IO",
 999                           },
1000 #endif
1001 #ifdef FIO_HAVE_SOLARISAIO
1002                           { .ival = "solarisaio",
1003                             .help = "Solaris native asynchronous IO",
1004                           },
1005 #endif
1006 #ifdef FIO_HAVE_WINDOWSAIO
1007                           { .ival = "windowsaio",
1008                             .help = "Windows native asynchronous IO"
1009                           },
1010 #endif
1011                           { .ival = "mmap",
1012                             .help = "Memory mapped IO"
1013                           },
1014 #ifdef FIO_HAVE_SPLICE
1015                           { .ival = "splice",
1016                             .help = "splice/vmsplice based IO",
1017                           },
1018                           { .ival = "netsplice",
1019                             .help = "splice/vmsplice to/from the network",
1020                           },
1021 #endif
1022 #ifdef FIO_HAVE_SGIO
1023                           { .ival = "sg",
1024                             .help = "SCSI generic v3 IO",
1025                           },
1026 #endif
1027                           { .ival = "null",
1028                             .help = "Testing engine (no data transfer)",
1029                           },
1030                           { .ival = "net",
1031                             .help = "Network IO",
1032                           },
1033 #ifdef FIO_HAVE_SYSLET
1034                           { .ival = "syslet-rw",
1035                             .help = "syslet enabled async pread/pwrite IO",
1036                           },
1037 #endif
1038                           { .ival = "cpuio",
1039                             .help = "CPU cycle burner engine",
1040                           },
1041 #ifdef FIO_HAVE_GUASI
1042                           { .ival = "guasi",
1043                             .help = "GUASI IO engine",
1044                           },
1045 #endif
1046 #ifdef FIO_HAVE_BINJECT
1047                           { .ival = "binject",
1048                             .help = "binject direct inject block engine",
1049                           },
1050 #endif
1051 #ifdef FIO_HAVE_RDMA
1052                           { .ival = "rdma",
1053                             .help = "RDMA IO engine",
1054                           },
1055 #endif
1056                           { .ival = "external",
1057                             .help = "Load external engine (append name)",
1058                           },
1059                 },
1060         },
1061         {
1062                 .name   = "iodepth",
1063                 .type   = FIO_OPT_INT,
1064                 .off1   = td_var_offset(iodepth),
1065                 .help   = "Number of IO buffers to keep in flight",
1066                 .minval = 1,
1067                 .def    = "1",
1068         },
1069         {
1070                 .name   = "iodepth_batch",
1071                 .alias  = "iodepth_batch_submit",
1072                 .type   = FIO_OPT_INT,
1073                 .off1   = td_var_offset(iodepth_batch),
1074                 .help   = "Number of IO buffers to submit in one go",
1075                 .parent = "iodepth",
1076                 .minval = 1,
1077                 .def    = "1",
1078         },
1079         {
1080                 .name   = "iodepth_batch_complete",
1081                 .type   = FIO_OPT_INT,
1082                 .off1   = td_var_offset(iodepth_batch_complete),
1083                 .help   = "Number of IO buffers to retrieve in one go",
1084                 .parent = "iodepth",
1085                 .minval = 0,
1086                 .def    = "1",
1087         },
1088         {
1089                 .name   = "iodepth_low",
1090                 .type   = FIO_OPT_INT,
1091                 .off1   = td_var_offset(iodepth_low),
1092                 .help   = "Low water mark for queuing depth",
1093                 .parent = "iodepth",
1094         },
1095         {
1096                 .name   = "size",
1097                 .type   = FIO_OPT_STR_VAL,
1098                 .cb     = str_size_cb,
1099                 .help   = "Total size of device or files",
1100         },
1101         {
1102                 .name   = "fill_device",
1103                 .alias  = "fill_fs",
1104                 .type   = FIO_OPT_BOOL,
1105                 .off1   = td_var_offset(fill_device),
1106                 .help   = "Write until an ENOSPC error occurs",
1107                 .def    = "0",
1108         },
1109         {
1110                 .name   = "filesize",
1111                 .type   = FIO_OPT_STR_VAL,
1112                 .off1   = td_var_offset(file_size_low),
1113                 .off2   = td_var_offset(file_size_high),
1114                 .minval = 1,
1115                 .help   = "Size of individual files",
1116         },
1117         {
1118                 .name   = "offset",
1119                 .alias  = "fileoffset",
1120                 .type   = FIO_OPT_STR_VAL,
1121                 .off1   = td_var_offset(start_offset),
1122                 .help   = "Start IO from this offset",
1123                 .def    = "0",
1124         },
1125         {
1126                 .name   = "offset_increment",
1127                 .type   = FIO_OPT_STR_VAL,
1128                 .off1   = td_var_offset(offset_increment),
1129                 .help   = "What is the increment from one offset to the next",
1130                 .parent = "offset",
1131                 .def    = "0",
1132         },
1133         {
1134                 .name   = "bs",
1135                 .alias  = "blocksize",
1136                 .type   = FIO_OPT_INT,
1137                 .off1   = td_var_offset(bs[DDIR_READ]),
1138                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1139                 .minval = 1,
1140                 .help   = "Block size unit",
1141                 .def    = "4k",
1142                 .parent = "rw",
1143         },
1144         {
1145                 .name   = "ba",
1146                 .alias  = "blockalign",
1147                 .type   = FIO_OPT_INT,
1148                 .off1   = td_var_offset(ba[DDIR_READ]),
1149                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1150                 .minval = 1,
1151                 .help   = "IO block offset alignment",
1152                 .parent = "rw",
1153         },
1154         {
1155                 .name   = "bsrange",
1156                 .alias  = "blocksize_range",
1157                 .type   = FIO_OPT_RANGE,
1158                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1159                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1160                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1161                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1162                 .minval = 1,
1163                 .help   = "Set block size range (in more detail than bs)",
1164                 .parent = "rw",
1165         },
1166         {
1167                 .name   = "bssplit",
1168                 .type   = FIO_OPT_STR,
1169                 .cb     = str_bssplit_cb,
1170                 .help   = "Set a specific mix of block sizes",
1171                 .parent = "rw",
1172         },
1173         {
1174                 .name   = "bs_unaligned",
1175                 .alias  = "blocksize_unaligned",
1176                 .type   = FIO_OPT_STR_SET,
1177                 .off1   = td_var_offset(bs_unaligned),
1178                 .help   = "Don't sector align IO buffer sizes",
1179                 .parent = "rw",
1180         },
1181         {
1182                 .name   = "randrepeat",
1183                 .type   = FIO_OPT_BOOL,
1184                 .off1   = td_var_offset(rand_repeatable),
1185                 .help   = "Use repeatable random IO pattern",
1186                 .def    = "1",
1187                 .parent = "rw",
1188         },
1189         {
1190                 .name   = "use_os_rand",
1191                 .type   = FIO_OPT_BOOL,
1192                 .off1   = td_var_offset(use_os_rand),
1193                 .help   = "Set to use OS random generator",
1194                 .def    = "0",
1195                 .parent = "rw",
1196         },
1197         {
1198                 .name   = "norandommap",
1199                 .type   = FIO_OPT_STR_SET,
1200                 .off1   = td_var_offset(norandommap),
1201                 .help   = "Accept potential duplicate random blocks",
1202                 .parent = "rw",
1203         },
1204         {
1205                 .name   = "softrandommap",
1206                 .type   = FIO_OPT_BOOL,
1207                 .off1   = td_var_offset(softrandommap),
1208                 .help   = "Set norandommap if randommap allocation fails",
1209                 .parent = "norandommap",
1210                 .def    = "0",
1211         },
1212         {
1213                 .name   = "nrfiles",
1214                 .alias  = "nr_files",
1215                 .type   = FIO_OPT_INT,
1216                 .off1   = td_var_offset(nr_files),
1217                 .help   = "Split job workload between this number of files",
1218                 .def    = "1",
1219         },
1220         {
1221                 .name   = "openfiles",
1222                 .type   = FIO_OPT_INT,
1223                 .off1   = td_var_offset(open_files),
1224                 .help   = "Number of files to keep open at the same time",
1225         },
1226         {
1227                 .name   = "file_service_type",
1228                 .type   = FIO_OPT_STR,
1229                 .cb     = str_fst_cb,
1230                 .off1   = td_var_offset(file_service_type),
1231                 .help   = "How to select which file to service next",
1232                 .def    = "roundrobin",
1233                 .posval = {
1234                           { .ival = "random",
1235                             .oval = FIO_FSERVICE_RANDOM,
1236                             .help = "Choose a file at random",
1237                           },
1238                           { .ival = "roundrobin",
1239                             .oval = FIO_FSERVICE_RR,
1240                             .help = "Round robin select files",
1241                           },
1242                           { .ival = "sequential",
1243                             .oval = FIO_FSERVICE_SEQ,
1244                             .help = "Finish one file before moving to the next",
1245                           },
1246                 },
1247                 .parent = "nrfiles",
1248         },
1249 #ifdef FIO_HAVE_FALLOCATE
1250         {
1251                 .name   = "fallocate",
1252                 .type   = FIO_OPT_STR,
1253                 .off1   = td_var_offset(fallocate_mode),
1254                 .help   = "Whether pre-allocation is performed when laying out files",
1255                 .def    = "posix",
1256                 .posval = {
1257                           { .ival = "none",
1258                             .oval = FIO_FALLOCATE_NONE,
1259                             .help = "Do not pre-allocate space",
1260                           },
1261                           { .ival = "posix",
1262                             .oval = FIO_FALLOCATE_POSIX,
1263                             .help = "Use posix_fallocate()",
1264                           },
1265 #ifdef FIO_HAVE_LINUX_FALLOCATE
1266                           { .ival = "keep",
1267                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1268                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1269                           },
1270 #endif
1271                           /* Compatibility with former boolean values */
1272                           { .ival = "0",
1273                             .oval = FIO_FALLOCATE_NONE,
1274                             .help = "Alias for 'none'",
1275                           },
1276                           { .ival = "1",
1277                             .oval = FIO_FALLOCATE_POSIX,
1278                             .help = "Alias for 'posix'",
1279                           },
1280                 },
1281         },
1282 #endif  /* FIO_HAVE_FALLOCATE */
1283         {
1284                 .name   = "fadvise_hint",
1285                 .type   = FIO_OPT_BOOL,
1286                 .off1   = td_var_offset(fadvise_hint),
1287                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1288                 .def    = "1",
1289         },
1290         {
1291                 .name   = "fsync",
1292                 .type   = FIO_OPT_INT,
1293                 .off1   = td_var_offset(fsync_blocks),
1294                 .help   = "Issue fsync for writes every given number of blocks",
1295                 .def    = "0",
1296         },
1297         {
1298                 .name   = "fdatasync",
1299                 .type   = FIO_OPT_INT,
1300                 .off1   = td_var_offset(fdatasync_blocks),
1301                 .help   = "Issue fdatasync for writes every given number of blocks",
1302                 .def    = "0",
1303         },
1304         {
1305                 .name   = "write_barrier",
1306                 .type   = FIO_OPT_INT,
1307                 .off1   = td_var_offset(barrier_blocks),
1308                 .help   = "Make every Nth write a barrier write",
1309                 .def    = "0",
1310         },
1311 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1312         {
1313                 .name   = "sync_file_range",
1314                 .posval = {
1315                           { .ival = "wait_before",
1316                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1317                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1318                             .or   = 1,
1319                           },
1320                           { .ival = "write",
1321                             .oval = SYNC_FILE_RANGE_WRITE,
1322                             .help = "SYNC_FILE_RANGE_WRITE",
1323                             .or   = 1,
1324                           },
1325                           {
1326                             .ival = "wait_after",
1327                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1328                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1329                             .or   = 1,
1330                           },
1331                 },
1332                 .type   = FIO_OPT_STR_MULTI,
1333                 .cb     = str_sfr_cb,
1334                 .off1   = td_var_offset(sync_file_range),
1335                 .help   = "Use sync_file_range()",
1336         },
1337 #endif
1338         {
1339                 .name   = "direct",
1340                 .type   = FIO_OPT_BOOL,
1341                 .off1   = td_var_offset(odirect),
1342                 .help   = "Use O_DIRECT IO (negates buffered)",
1343                 .def    = "0",
1344         },
1345         {
1346                 .name   = "buffered",
1347                 .type   = FIO_OPT_BOOL,
1348                 .off1   = td_var_offset(odirect),
1349                 .neg    = 1,
1350                 .help   = "Use buffered IO (negates direct)",
1351                 .def    = "1",
1352         },
1353         {
1354                 .name   = "overwrite",
1355                 .type   = FIO_OPT_BOOL,
1356                 .off1   = td_var_offset(overwrite),
1357                 .help   = "When writing, set whether to overwrite current data",
1358                 .def    = "0",
1359         },
1360         {
1361                 .name   = "loops",
1362                 .type   = FIO_OPT_INT,
1363                 .off1   = td_var_offset(loops),
1364                 .help   = "Number of times to run the job",
1365                 .def    = "1",
1366         },
1367         {
1368                 .name   = "numjobs",
1369                 .type   = FIO_OPT_INT,
1370                 .off1   = td_var_offset(numjobs),
1371                 .help   = "Duplicate this job this many times",
1372                 .def    = "1",
1373         },
1374         {
1375                 .name   = "startdelay",
1376                 .type   = FIO_OPT_STR_VAL_TIME,
1377                 .off1   = td_var_offset(start_delay),
1378                 .help   = "Only start job when this period has passed",
1379                 .def    = "0",
1380         },
1381         {
1382                 .name   = "runtime",
1383                 .alias  = "timeout",
1384                 .type   = FIO_OPT_STR_VAL_TIME,
1385                 .off1   = td_var_offset(timeout),
1386                 .help   = "Stop workload when this amount of time has passed",
1387                 .def    = "0",
1388         },
1389         {
1390                 .name   = "time_based",
1391                 .type   = FIO_OPT_STR_SET,
1392                 .off1   = td_var_offset(time_based),
1393                 .help   = "Keep running until runtime/timeout is met",
1394         },
1395         {
1396                 .name   = "ramp_time",
1397                 .type   = FIO_OPT_STR_VAL_TIME,
1398                 .off1   = td_var_offset(ramp_time),
1399                 .help   = "Ramp up time before measuring performance",
1400         },
1401         {
1402                 .name   = "clocksource",
1403                 .type   = FIO_OPT_STR,
1404                 .cb     = fio_clock_source_cb,
1405                 .off1   = td_var_offset(clocksource),
1406                 .help   = "What type of timing source to use",
1407                 .posval = {
1408                           { .ival = "gettimeofday",
1409                             .oval = CS_GTOD,
1410                             .help = "Use gettimeofday(2) for timing",
1411                           },
1412                           { .ival = "clock_gettime",
1413                             .oval = CS_CGETTIME,
1414                             .help = "Use clock_gettime(2) for timing",
1415                           },
1416 #ifdef ARCH_HAVE_CPU_CLOCK
1417                           { .ival = "cpu",
1418                             .oval = CS_CPUCLOCK,
1419                             .help = "Use CPU private clock",
1420                           },
1421 #endif
1422                 },
1423         },
1424         {
1425                 .name   = "mem",
1426                 .alias  = "iomem",
1427                 .type   = FIO_OPT_STR,
1428                 .cb     = str_mem_cb,
1429                 .off1   = td_var_offset(mem_type),
1430                 .help   = "Backing type for IO buffers",
1431                 .def    = "malloc",
1432                 .posval = {
1433                           { .ival = "malloc",
1434                             .oval = MEM_MALLOC,
1435                             .help = "Use malloc(3) for IO buffers",
1436                           },
1437                           { .ival = "shm",
1438                             .oval = MEM_SHM,
1439                             .help = "Use shared memory segments for IO buffers",
1440                           },
1441 #ifdef FIO_HAVE_HUGETLB
1442                           { .ival = "shmhuge",
1443                             .oval = MEM_SHMHUGE,
1444                             .help = "Like shm, but use huge pages",
1445                           },
1446 #endif
1447                           { .ival = "mmap",
1448                             .oval = MEM_MMAP,
1449                             .help = "Use mmap(2) (file or anon) for IO buffers",
1450                           },
1451 #ifdef FIO_HAVE_HUGETLB
1452                           { .ival = "mmaphuge",
1453                             .oval = MEM_MMAPHUGE,
1454                             .help = "Like mmap, but use huge pages",
1455                           },
1456 #endif
1457                   },
1458         },
1459         {
1460                 .name   = "iomem_align",
1461                 .alias  = "mem_align",
1462                 .type   = FIO_OPT_INT,
1463                 .off1   = td_var_offset(mem_align),
1464                 .minval = 0,
1465                 .help   = "IO memory buffer offset alignment",
1466                 .def    = "0",
1467                 .parent = "iomem",
1468         },
1469         {
1470                 .name   = "verify",
1471                 .type   = FIO_OPT_STR,
1472                 .off1   = td_var_offset(verify),
1473                 .help   = "Verify data written",
1474                 .cb     = str_verify_cb,
1475                 .def    = "0",
1476                 .posval = {
1477                           { .ival = "0",
1478                             .oval = VERIFY_NONE,
1479                             .help = "Don't do IO verification",
1480                           },
1481                           { .ival = "md5",
1482                             .oval = VERIFY_MD5,
1483                             .help = "Use md5 checksums for verification",
1484                           },
1485                           { .ival = "crc64",
1486                             .oval = VERIFY_CRC64,
1487                             .help = "Use crc64 checksums for verification",
1488                           },
1489                           { .ival = "crc32",
1490                             .oval = VERIFY_CRC32,
1491                             .help = "Use crc32 checksums for verification",
1492                           },
1493                           { .ival = "crc32c-intel",
1494                             .oval = VERIFY_CRC32C,
1495                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1496                           },
1497                           { .ival = "crc32c",
1498                             .oval = VERIFY_CRC32C,
1499                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
1500                           },
1501                           { .ival = "crc16",
1502                             .oval = VERIFY_CRC16,
1503                             .help = "Use crc16 checksums for verification",
1504                           },
1505                           { .ival = "crc7",
1506                             .oval = VERIFY_CRC7,
1507                             .help = "Use crc7 checksums for verification",
1508                           },
1509                           { .ival = "sha1",
1510                             .oval = VERIFY_SHA1,
1511                             .help = "Use sha1 checksums for verification",
1512                           },
1513                           { .ival = "sha256",
1514                             .oval = VERIFY_SHA256,
1515                             .help = "Use sha256 checksums for verification",
1516                           },
1517                           { .ival = "sha512",
1518                             .oval = VERIFY_SHA512,
1519                             .help = "Use sha512 checksums for verification",
1520                           },
1521                           { .ival = "meta",
1522                             .oval = VERIFY_META,
1523                             .help = "Use io information",
1524                           },
1525                           {
1526                             .ival = "null",
1527                             .oval = VERIFY_NULL,
1528                             .help = "Pretend to verify",
1529                           },
1530                 },
1531         },
1532         {
1533                 .name   = "do_verify",
1534                 .type   = FIO_OPT_BOOL,
1535                 .off1   = td_var_offset(do_verify),
1536                 .help   = "Run verification stage after write",
1537                 .def    = "1",
1538                 .parent = "verify",
1539         },
1540         {
1541                 .name   = "verifysort",
1542                 .type   = FIO_OPT_BOOL,
1543                 .off1   = td_var_offset(verifysort),
1544                 .help   = "Sort written verify blocks for read back",
1545                 .def    = "1",
1546                 .parent = "verify",
1547         },
1548         {
1549                 .name   = "verify_interval",
1550                 .type   = FIO_OPT_INT,
1551                 .off1   = td_var_offset(verify_interval),
1552                 .minval = 2 * sizeof(struct verify_header),
1553                 .help   = "Store verify buffer header every N bytes",
1554                 .parent = "verify",
1555         },
1556         {
1557                 .name   = "verify_offset",
1558                 .type   = FIO_OPT_INT,
1559                 .help   = "Offset verify header location by N bytes",
1560                 .def    = "0",
1561                 .cb     = str_verify_offset_cb,
1562                 .parent = "verify",
1563         },
1564         {
1565                 .name   = "verify_pattern",
1566                 .type   = FIO_OPT_STR,
1567                 .cb     = str_verify_pattern_cb,
1568                 .help   = "Fill pattern for IO buffers",
1569                 .parent = "verify",
1570         },
1571         {
1572                 .name   = "verify_fatal",
1573                 .type   = FIO_OPT_BOOL,
1574                 .off1   = td_var_offset(verify_fatal),
1575                 .def    = "0",
1576                 .help   = "Exit on a single verify failure, don't continue",
1577                 .parent = "verify",
1578         },
1579         {
1580                 .name   = "verify_dump",
1581                 .type   = FIO_OPT_BOOL,
1582                 .off1   = td_var_offset(verify_dump),
1583                 .def    = "0",
1584                 .help   = "Dump contents of good and bad blocks on failure",
1585                 .parent = "verify",
1586         },
1587         {
1588                 .name   = "verify_async",
1589                 .type   = FIO_OPT_INT,
1590                 .off1   = td_var_offset(verify_async),
1591                 .def    = "0",
1592                 .help   = "Number of async verifier threads to use",
1593                 .parent = "verify",
1594         },
1595         {
1596                 .name   = "verify_backlog",
1597                 .type   = FIO_OPT_STR_VAL,
1598                 .off1   = td_var_offset(verify_backlog),
1599                 .help   = "Verify after this number of blocks are written",
1600                 .parent = "verify",
1601         },
1602         {
1603                 .name   = "verify_backlog_batch",
1604                 .type   = FIO_OPT_INT,
1605                 .off1   = td_var_offset(verify_batch),
1606                 .help   = "Verify this number of IO blocks",
1607                 .parent = "verify",
1608         },
1609 #ifdef FIO_HAVE_CPU_AFFINITY
1610         {
1611                 .name   = "verify_async_cpus",
1612                 .type   = FIO_OPT_STR,
1613                 .cb     = str_verify_cpus_allowed_cb,
1614                 .help   = "Set CPUs allowed for async verify threads",
1615                 .parent = "verify_async",
1616         },
1617 #endif
1618 #ifdef FIO_HAVE_TRIM
1619         {
1620                 .name   = "trim_percentage",
1621                 .type   = FIO_OPT_INT,
1622                 .cb     = str_verify_trim_cb,
1623                 .maxval = 100,
1624                 .help   = "Number of verify blocks to discard/trim",
1625                 .parent = "verify",
1626                 .def    = "0",
1627         },
1628         {
1629                 .name   = "trim_verify_zero",
1630                 .type   = FIO_OPT_INT,
1631                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1632                 .off1   = td_var_offset(trim_zero),
1633                 .parent = "trim_percentage",
1634                 .def    = "1",
1635         },
1636         {
1637                 .name   = "trim_backlog",
1638                 .type   = FIO_OPT_STR_VAL,
1639                 .off1   = td_var_offset(trim_backlog),
1640                 .help   = "Trim after this number of blocks are written",
1641                 .parent = "trim_percentage",
1642         },
1643         {
1644                 .name   = "trim_backlog_batch",
1645                 .type   = FIO_OPT_INT,
1646                 .off1   = td_var_offset(trim_batch),
1647                 .help   = "Trim this number of IO blocks",
1648                 .parent = "trim_percentage",
1649         },
1650 #endif
1651         {
1652                 .name   = "write_iolog",
1653                 .type   = FIO_OPT_STR_STORE,
1654                 .off1   = td_var_offset(write_iolog_file),
1655                 .help   = "Store IO pattern to file",
1656         },
1657         {
1658                 .name   = "read_iolog",
1659                 .type   = FIO_OPT_STR_STORE,
1660                 .off1   = td_var_offset(read_iolog_file),
1661                 .help   = "Playback IO pattern from file",
1662         },
1663         {
1664                 .name   = "replay_no_stall",
1665                 .type   = FIO_OPT_INT,
1666                 .off1   = td_var_offset(no_stall),
1667                 .def    = "0",
1668                 .parent = "read_iolog",
1669                 .help   = "Playback IO pattern file as fast as possible without stalls",
1670         },
1671         {
1672                 .name   = "replay_redirect",
1673                 .type   = FIO_OPT_STR_STORE,
1674                 .off1   = td_var_offset(replay_redirect),
1675                 .parent = "read_iolog",
1676                 .help   = "Replay all I/O onto this device, regardless of trace device",
1677         },
1678         {
1679                 .name   = "exec_prerun",
1680                 .type   = FIO_OPT_STR_STORE,
1681                 .off1   = td_var_offset(exec_prerun),
1682                 .help   = "Execute this file prior to running job",
1683         },
1684         {
1685                 .name   = "exec_postrun",
1686                 .type   = FIO_OPT_STR_STORE,
1687                 .off1   = td_var_offset(exec_postrun),
1688                 .help   = "Execute this file after running job",
1689         },
1690 #ifdef FIO_HAVE_IOSCHED_SWITCH
1691         {
1692                 .name   = "ioscheduler",
1693                 .type   = FIO_OPT_STR_STORE,
1694                 .off1   = td_var_offset(ioscheduler),
1695                 .help   = "Use this IO scheduler on the backing device",
1696         },
1697 #endif
1698         {
1699                 .name   = "zonesize",
1700                 .type   = FIO_OPT_STR_VAL,
1701                 .off1   = td_var_offset(zone_size),
1702                 .help   = "Amount of data to read per zone",
1703                 .def    = "0",
1704         },
1705         {
1706                 .name   = "zonerange",
1707                 .type   = FIO_OPT_STR_VAL,
1708                 .off1   = td_var_offset(zone_range),
1709                 .help   = "Give size of an IO zone",
1710                 .def    = "0",
1711         },
1712         {
1713                 .name   = "zoneskip",
1714                 .type   = FIO_OPT_STR_VAL,
1715                 .off1   = td_var_offset(zone_skip),
1716                 .help   = "Space between IO zones",
1717                 .def    = "0",
1718         },
1719         {
1720                 .name   = "lockmem",
1721                 .type   = FIO_OPT_STR_VAL,
1722                 .cb     = str_lockmem_cb,
1723                 .help   = "Lock down this amount of memory",
1724                 .def    = "0",
1725         },
1726         {
1727                 .name   = "rwmixread",
1728                 .type   = FIO_OPT_INT,
1729                 .cb     = str_rwmix_read_cb,
1730                 .maxval = 100,
1731                 .help   = "Percentage of mixed workload that is reads",
1732                 .def    = "50",
1733         },
1734         {
1735                 .name   = "rwmixwrite",
1736                 .type   = FIO_OPT_INT,
1737                 .cb     = str_rwmix_write_cb,
1738                 .maxval = 100,
1739                 .help   = "Percentage of mixed workload that is writes",
1740                 .def    = "50",
1741         },
1742         {
1743                 .name   = "rwmixcycle",
1744                 .type   = FIO_OPT_DEPRECATED,
1745         },
1746         {
1747                 .name   = "nice",
1748                 .type   = FIO_OPT_INT,
1749                 .off1   = td_var_offset(nice),
1750                 .help   = "Set job CPU nice value",
1751                 .minval = -19,
1752                 .maxval = 20,
1753                 .def    = "0",
1754         },
1755 #ifdef FIO_HAVE_IOPRIO
1756         {
1757                 .name   = "prio",
1758                 .type   = FIO_OPT_INT,
1759                 .cb     = str_prio_cb,
1760                 .help   = "Set job IO priority value",
1761                 .minval = 0,
1762                 .maxval = 7,
1763         },
1764         {
1765                 .name   = "prioclass",
1766                 .type   = FIO_OPT_INT,
1767                 .cb     = str_prioclass_cb,
1768                 .help   = "Set job IO priority class",
1769                 .minval = 0,
1770                 .maxval = 3,
1771         },
1772 #endif
1773         {
1774                 .name   = "thinktime",
1775                 .type   = FIO_OPT_INT,
1776                 .off1   = td_var_offset(thinktime),
1777                 .help   = "Idle time between IO buffers (usec)",
1778                 .def    = "0",
1779         },
1780         {
1781                 .name   = "thinktime_spin",
1782                 .type   = FIO_OPT_INT,
1783                 .off1   = td_var_offset(thinktime_spin),
1784                 .help   = "Start think time by spinning this amount (usec)",
1785                 .def    = "0",
1786                 .parent = "thinktime",
1787         },
1788         {
1789                 .name   = "thinktime_blocks",
1790                 .type   = FIO_OPT_INT,
1791                 .off1   = td_var_offset(thinktime_blocks),
1792                 .help   = "IO buffer period between 'thinktime'",
1793                 .def    = "1",
1794                 .parent = "thinktime",
1795         },
1796         {
1797                 .name   = "rate",
1798                 .type   = FIO_OPT_INT,
1799                 .off1   = td_var_offset(rate[0]),
1800                 .off2   = td_var_offset(rate[1]),
1801                 .help   = "Set bandwidth rate",
1802         },
1803         {
1804                 .name   = "ratemin",
1805                 .type   = FIO_OPT_INT,
1806                 .off1   = td_var_offset(ratemin[0]),
1807                 .off2   = td_var_offset(ratemin[1]),
1808                 .help   = "Job must meet this rate or it will be shutdown",
1809                 .parent = "rate",
1810         },
1811         {
1812                 .name   = "rate_iops",
1813                 .type   = FIO_OPT_INT,
1814                 .off1   = td_var_offset(rate_iops[0]),
1815                 .off2   = td_var_offset(rate_iops[1]),
1816                 .help   = "Limit IO used to this number of IO operations/sec",
1817         },
1818         {
1819                 .name   = "rate_iops_min",
1820                 .type   = FIO_OPT_INT,
1821                 .off1   = td_var_offset(rate_iops_min[0]),
1822                 .off2   = td_var_offset(rate_iops_min[1]),
1823                 .help   = "Job must meet this rate or it will be shut down",
1824                 .parent = "rate_iops",
1825         },
1826         {
1827                 .name   = "ratecycle",
1828                 .type   = FIO_OPT_INT,
1829                 .off1   = td_var_offset(ratecycle),
1830                 .help   = "Window average for rate limits (msec)",
1831                 .def    = "1000",
1832                 .parent = "rate",
1833         },
1834         {
1835                 .name   = "invalidate",
1836                 .type   = FIO_OPT_BOOL,
1837                 .off1   = td_var_offset(invalidate_cache),
1838                 .help   = "Invalidate buffer/page cache prior to running job",
1839                 .def    = "1",
1840         },
1841         {
1842                 .name   = "sync",
1843                 .type   = FIO_OPT_BOOL,
1844                 .off1   = td_var_offset(sync_io),
1845                 .help   = "Use O_SYNC for buffered writes",
1846                 .def    = "0",
1847                 .parent = "buffered",
1848         },
1849         {
1850                 .name   = "bwavgtime",
1851                 .type   = FIO_OPT_INT,
1852                 .off1   = td_var_offset(bw_avg_time),
1853                 .help   = "Time window over which to calculate bandwidth"
1854                           " (msec)",
1855                 .def    = "500",
1856                 .parent = "write_bw_log",
1857         },
1858         {
1859                 .name   = "iopsavgtime",
1860                 .type   = FIO_OPT_INT,
1861                 .off1   = td_var_offset(iops_avg_time),
1862                 .help   = "Time window over which to calculate IOPS (msec)",
1863                 .def    = "500",
1864                 .parent = "write_iops_log",
1865         },
1866         {
1867                 .name   = "create_serialize",
1868                 .type   = FIO_OPT_BOOL,
1869                 .off1   = td_var_offset(create_serialize),
1870                 .help   = "Serialize creating of job files",
1871                 .def    = "1",
1872         },
1873         {
1874                 .name   = "create_fsync",
1875                 .type   = FIO_OPT_BOOL,
1876                 .off1   = td_var_offset(create_fsync),
1877                 .help   = "fsync file after creation",
1878                 .def    = "1",
1879         },
1880         {
1881                 .name   = "create_on_open",
1882                 .type   = FIO_OPT_BOOL,
1883                 .off1   = td_var_offset(create_on_open),
1884                 .help   = "Create files when they are opened for IO",
1885                 .def    = "0",
1886         },
1887         {
1888                 .name   = "pre_read",
1889                 .type   = FIO_OPT_BOOL,
1890                 .off1   = td_var_offset(pre_read),
1891                 .help   = "Pre-read files before starting official testing",
1892                 .def    = "0",
1893         },
1894         {
1895                 .name   = "cpuload",
1896                 .type   = FIO_OPT_INT,
1897                 .off1   = td_var_offset(cpuload),
1898                 .help   = "Use this percentage of CPU",
1899         },
1900         {
1901                 .name   = "cpuchunks",
1902                 .type   = FIO_OPT_INT,
1903                 .off1   = td_var_offset(cpucycle),
1904                 .help   = "Length of the CPU burn cycles (usecs)",
1905                 .def    = "50000",
1906                 .parent = "cpuload",
1907         },
1908 #ifdef FIO_HAVE_CPU_AFFINITY
1909         {
1910                 .name   = "cpumask",
1911                 .type   = FIO_OPT_INT,
1912                 .cb     = str_cpumask_cb,
1913                 .help   = "CPU affinity mask",
1914         },
1915         {
1916                 .name   = "cpus_allowed",
1917                 .type   = FIO_OPT_STR,
1918                 .cb     = str_cpus_allowed_cb,
1919                 .help   = "Set CPUs allowed",
1920         },
1921 #endif
1922         {
1923                 .name   = "end_fsync",
1924                 .type   = FIO_OPT_BOOL,
1925                 .off1   = td_var_offset(end_fsync),
1926                 .help   = "Include fsync at the end of job",
1927                 .def    = "0",
1928         },
1929         {
1930                 .name   = "fsync_on_close",
1931                 .type   = FIO_OPT_BOOL,
1932                 .off1   = td_var_offset(fsync_on_close),
1933                 .help   = "fsync files on close",
1934                 .def    = "0",
1935         },
1936         {
1937                 .name   = "unlink",
1938                 .type   = FIO_OPT_BOOL,
1939                 .off1   = td_var_offset(unlink),
1940                 .help   = "Unlink created files after job has completed",
1941                 .def    = "0",
1942         },
1943         {
1944                 .name   = "exitall",
1945                 .type   = FIO_OPT_STR_SET,
1946                 .cb     = str_exitall_cb,
1947                 .help   = "Terminate all jobs when one exits",
1948         },
1949         {
1950                 .name   = "stonewall",
1951                 .alias  = "wait_for_previous",
1952                 .type   = FIO_OPT_STR_SET,
1953                 .off1   = td_var_offset(stonewall),
1954                 .help   = "Insert a hard barrier between this job and previous",
1955         },
1956         {
1957                 .name   = "new_group",
1958                 .type   = FIO_OPT_STR_SET,
1959                 .off1   = td_var_offset(new_group),
1960                 .help   = "Mark the start of a new group (for reporting)",
1961         },
1962         {
1963                 .name   = "thread",
1964                 .type   = FIO_OPT_STR_SET,
1965                 .off1   = td_var_offset(use_thread),
1966                 .help   = "Use threads instead of forks",
1967         },
1968         {
1969                 .name   = "write_bw_log",
1970                 .type   = FIO_OPT_STR,
1971                 .off1   = td_var_offset(write_bw_log),
1972                 .cb     = str_write_bw_log_cb,
1973                 .help   = "Write log of bandwidth during run",
1974         },
1975         {
1976                 .name   = "write_lat_log",
1977                 .type   = FIO_OPT_STR,
1978                 .off1   = td_var_offset(write_lat_log),
1979                 .cb     = str_write_lat_log_cb,
1980                 .help   = "Write log of latency during run",
1981         },
1982         {
1983                 .name   = "write_iops_log",
1984                 .type   = FIO_OPT_STR,
1985                 .off1   = td_var_offset(write_iops_log),
1986                 .cb     = str_write_iops_log_cb,
1987                 .help   = "Write log of IOPS during run",
1988         },
1989         {
1990                 .name   = "log_avg_msec",
1991                 .type   = FIO_OPT_INT,
1992                 .off1   = td_var_offset(log_avg_msec),
1993                 .help   = "Average bw/iops/lat logs over this period of time",
1994                 .def    = "0",
1995         },
1996         {
1997                 .name   = "hugepage-size",
1998                 .type   = FIO_OPT_INT,
1999                 .off1   = td_var_offset(hugepage_size),
2000                 .help   = "When using hugepages, specify size of each page",
2001                 .def    = __fio_stringify(FIO_HUGE_PAGE),
2002         },
2003         {
2004                 .name   = "group_reporting",
2005                 .type   = FIO_OPT_STR_SET,
2006                 .off1   = td_var_offset(group_reporting),
2007                 .help   = "Do reporting on a per-group basis",
2008         },
2009         {
2010                 .name   = "zero_buffers",
2011                 .type   = FIO_OPT_STR_SET,
2012                 .off1   = td_var_offset(zero_buffers),
2013                 .help   = "Init IO buffers to all zeroes",
2014         },
2015         {
2016                 .name   = "refill_buffers",
2017                 .type   = FIO_OPT_STR_SET,
2018                 .off1   = td_var_offset(refill_buffers),
2019                 .help   = "Refill IO buffers on every IO submit",
2020         },
2021         {
2022                 .name   = "scramble_buffers",
2023                 .type   = FIO_OPT_BOOL,
2024                 .off1   = td_var_offset(scramble_buffers),
2025                 .help   = "Slightly scramble buffers on every IO submit",
2026                 .def    = "1",
2027         },
2028         {
2029                 .name   = "buffer_compress_percentage",
2030                 .type   = FIO_OPT_INT,
2031                 .off1   = td_var_offset(compress_percentage),
2032                 .maxval = 100,
2033                 .minval = 1,
2034                 .help   = "How compressible the buffer is (approximately)",
2035         },
2036         {
2037                 .name   = "buffer_compress_chunk",
2038                 .type   = FIO_OPT_INT,
2039                 .off1   = td_var_offset(compress_chunk),
2040                 .parent = "buffer_compress_percentage",
2041                 .help   = "Size of compressible region in buffer",
2042         },
2043         {
2044                 .name   = "clat_percentiles",
2045                 .type   = FIO_OPT_BOOL,
2046                 .off1   = td_var_offset(clat_percentiles),
2047                 .help   = "Enable the reporting of completion latency percentiles",
2048                 .def    = "1",
2049         },
2050         {
2051                 .name   = "percentile_list",
2052                 .type   = FIO_OPT_FLOAT_LIST,
2053                 .off1   = td_var_offset(percentile_list),
2054                 .off2   = td_var_offset(overwrite_plist),
2055                 .help   = "Specify a custom list of percentiles to report",
2056                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2057                 .minfp  = 0.0,
2058                 .maxfp  = 100.0,
2059         },
2060
2061 #ifdef FIO_HAVE_DISK_UTIL
2062         {
2063                 .name   = "disk_util",
2064                 .type   = FIO_OPT_BOOL,
2065                 .off1   = td_var_offset(do_disk_util),
2066                 .help   = "Log disk utilization statistics",
2067                 .def    = "1",
2068         },
2069 #endif
2070         {
2071                 .name   = "gtod_reduce",
2072                 .type   = FIO_OPT_BOOL,
2073                 .help   = "Greatly reduce number of gettimeofday() calls",
2074                 .cb     = str_gtod_reduce_cb,
2075                 .def    = "0",
2076         },
2077         {
2078                 .name   = "disable_lat",
2079                 .type   = FIO_OPT_BOOL,
2080                 .off1   = td_var_offset(disable_lat),
2081                 .help   = "Disable latency numbers",
2082                 .parent = "gtod_reduce",
2083                 .def    = "0",
2084         },
2085         {
2086                 .name   = "disable_clat",
2087                 .type   = FIO_OPT_BOOL,
2088                 .off1   = td_var_offset(disable_clat),
2089                 .help   = "Disable completion latency numbers",
2090                 .parent = "gtod_reduce",
2091                 .def    = "0",
2092         },
2093         {
2094                 .name   = "disable_slat",
2095                 .type   = FIO_OPT_BOOL,
2096                 .off1   = td_var_offset(disable_slat),
2097                 .help   = "Disable submission latency numbers",
2098                 .parent = "gtod_reduce",
2099                 .def    = "0",
2100         },
2101         {
2102                 .name   = "disable_bw_measurement",
2103                 .type   = FIO_OPT_BOOL,
2104                 .off1   = td_var_offset(disable_bw),
2105                 .help   = "Disable bandwidth logging",
2106                 .parent = "gtod_reduce",
2107                 .def    = "0",
2108         },
2109         {
2110                 .name   = "gtod_cpu",
2111                 .type   = FIO_OPT_INT,
2112                 .cb     = str_gtod_cpu_cb,
2113                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
2114                 .verify = gtod_cpu_verify,
2115         },
2116         {
2117                 .name   = "continue_on_error",
2118                 .type   = FIO_OPT_STR,
2119                 .off1   = td_var_offset(continue_on_error),
2120                 .help   = "Continue on non-fatal errors during IO",
2121                 .def    = "none",
2122                 .posval = {
2123                           { .ival = "none",
2124                             .oval = ERROR_TYPE_NONE,
2125                             .help = "Exit when an error is encountered",
2126                           },
2127                           { .ival = "read",
2128                             .oval = ERROR_TYPE_READ,
2129                             .help = "Continue on read errors only",
2130                           },
2131                           { .ival = "write",
2132                             .oval = ERROR_TYPE_WRITE,
2133                             .help = "Continue on write errors only",
2134                           },
2135                           { .ival = "io",
2136                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2137                             .help = "Continue on any IO errors",
2138                           },
2139                           { .ival = "verify",
2140                             .oval = ERROR_TYPE_VERIFY,
2141                             .help = "Continue on verify errors only",
2142                           },
2143                           { .ival = "all",
2144                             .oval = ERROR_TYPE_ANY,
2145                             .help = "Continue on all io and verify errors",
2146                           },
2147                           { .ival = "0",
2148                             .oval = ERROR_TYPE_NONE,
2149                             .help = "Alias for 'none'",
2150                           },
2151                           { .ival = "1",
2152                             .oval = ERROR_TYPE_ANY,
2153                             .help = "Alias for 'all'",
2154                           },
2155                 },
2156         },
2157         {
2158                 .name   = "profile",
2159                 .type   = FIO_OPT_STR_STORE,
2160                 .off1   = td_var_offset(profile),
2161                 .help   = "Select a specific builtin performance test",
2162         },
2163         {
2164                 .name   = "cgroup",
2165                 .type   = FIO_OPT_STR_STORE,
2166                 .off1   = td_var_offset(cgroup),
2167                 .help   = "Add job to cgroup of this name",
2168         },
2169         {
2170                 .name   = "cgroup_weight",
2171                 .type   = FIO_OPT_INT,
2172                 .off1   = td_var_offset(cgroup_weight),
2173                 .help   = "Use given weight for cgroup",
2174                 .minval = 100,
2175                 .maxval = 1000,
2176         },
2177         {
2178                 .name   = "cgroup_nodelete",
2179                 .type   = FIO_OPT_BOOL,
2180                 .off1   = td_var_offset(cgroup_nodelete),
2181                 .help   = "Do not delete cgroups after job completion",
2182                 .def    = "0",
2183         },
2184         {
2185                 .name   = "uid",
2186                 .type   = FIO_OPT_INT,
2187                 .off1   = td_var_offset(uid),
2188                 .help   = "Run job with this user ID",
2189         },
2190         {
2191                 .name   = "gid",
2192                 .type   = FIO_OPT_INT,
2193                 .off1   = td_var_offset(gid),
2194                 .help   = "Run job with this group ID",
2195         },
2196         {
2197                 .name   = "flow_id",
2198                 .type   = FIO_OPT_INT,
2199                 .off1   = td_var_offset(flow_id),
2200                 .help   = "The flow index ID to use",
2201                 .def    = "0",
2202         },
2203         {
2204                 .name   = "flow",
2205                 .type   = FIO_OPT_INT,
2206                 .off1   = td_var_offset(flow),
2207                 .help   = "Weight for flow control of this job",
2208                 .parent = "flow_id",
2209                 .def    = "0",
2210         },
2211         {
2212                 .name   = "flow_watermark",
2213                 .type   = FIO_OPT_INT,
2214                 .off1   = td_var_offset(flow_watermark),
2215                 .help   = "High watermark for flow control. This option"
2216                         " should be set to the same value for all threads"
2217                         " with non-zero flow.",
2218                 .parent = "flow_id",
2219                 .def    = "1024",
2220         },
2221         {
2222                 .name   = "flow_sleep",
2223                 .type   = FIO_OPT_INT,
2224                 .off1   = td_var_offset(flow_sleep),
2225                 .help   = "How many microseconds to sleep after being held"
2226                         " back by the flow control mechanism",
2227                 .parent = "flow_id",
2228                 .def    = "0",
2229         },
2230         {
2231                 .name = NULL,
2232         },
2233 };
2234
2235 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2236                         const char *name, int val)
2237 {
2238         lopt->name = (char *) name;
2239         lopt->val = val;
2240         if (o->type == FIO_OPT_STR_SET)
2241                 lopt->has_arg = no_argument;
2242         else
2243                 lopt->has_arg = required_argument;
2244 }
2245
2246 static void options_to_lopts(struct fio_option *opts,
2247                               struct option *long_options,
2248                               int i, int option_type)
2249 {
2250         struct fio_option *o = &opts[0];
2251         while (o->name) {
2252                 add_to_lopt(&long_options[i], o, o->name, option_type);
2253                 if (o->alias) {
2254                         i++;
2255                         add_to_lopt(&long_options[i], o, o->alias, option_type);
2256                 }
2257
2258                 i++;
2259                 o++;
2260                 assert(i < FIO_NR_OPTIONS);
2261         }
2262 }
2263
2264 void fio_options_set_ioengine_opts(struct option *long_options,
2265                                    struct thread_data *td)
2266 {
2267         unsigned int i;
2268
2269         i = 0;
2270         while (long_options[i].name) {
2271                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2272                         memset(&long_options[i], 0, sizeof(*long_options));
2273                         break;
2274                 }
2275                 i++;
2276         }
2277
2278         /*
2279          * Just clear out the prior ioengine options.
2280          */
2281         if (!td || !td->eo)
2282                 return;
2283
2284         options_to_lopts(td->io_ops->options, long_options, i,
2285                          FIO_GETOPT_IOENGINE);
2286 }
2287
2288 void fio_options_dup_and_init(struct option *long_options)
2289 {
2290         unsigned int i;
2291
2292         options_init(options);
2293
2294         i = 0;
2295         while (long_options[i].name)
2296                 i++;
2297
2298         options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2299 }
2300
2301 struct fio_keyword {
2302         const char *word;
2303         const char *desc;
2304         char *replace;
2305 };
2306
2307 static struct fio_keyword fio_keywords[] = {
2308         {
2309                 .word   = "$pagesize",
2310                 .desc   = "Page size in the system",
2311         },
2312         {
2313                 .word   = "$mb_memory",
2314                 .desc   = "Megabytes of memory online",
2315         },
2316         {
2317                 .word   = "$ncpus",
2318                 .desc   = "Number of CPUs online in the system",
2319         },
2320         {
2321                 .word   = NULL,
2322         },
2323 };
2324
2325 void fio_keywords_init(void)
2326 {
2327         unsigned long long mb_memory;
2328         char buf[128];
2329         long l;
2330
2331         sprintf(buf, "%lu", page_size);
2332         fio_keywords[0].replace = strdup(buf);
2333
2334         mb_memory = os_phys_mem() / (1024 * 1024);
2335         sprintf(buf, "%llu", mb_memory);
2336         fio_keywords[1].replace = strdup(buf);
2337
2338         l = cpus_online();
2339         sprintf(buf, "%lu", l);
2340         fio_keywords[2].replace = strdup(buf);
2341 }
2342
2343 #define BC_APP          "bc"
2344
2345 static char *bc_calc(char *str)
2346 {
2347         char buf[128], *tmp;
2348         FILE *f;
2349         int ret;
2350
2351         /*
2352          * No math, just return string
2353          */
2354         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2355              !strchr(str, '/')) || strchr(str, '\''))
2356                 return str;
2357
2358         /*
2359          * Split option from value, we only need to calculate the value
2360          */
2361         tmp = strchr(str, '=');
2362         if (!tmp)
2363                 return str;
2364
2365         tmp++;
2366
2367         /*
2368          * Prevent buffer overflows; such a case isn't reasonable anyway
2369          */
2370         if (strlen(str) >= 128 || strlen(tmp) > 100)
2371                 return str;
2372
2373         sprintf(buf, "which %s > /dev/null", BC_APP);
2374         if (system(buf)) {
2375                 log_err("fio: bc is needed for performing math\n");
2376                 return NULL;
2377         }
2378
2379         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2380         f = popen(buf, "r");
2381         if (!f) {
2382                 return NULL;
2383         }
2384
2385         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2386         if (ret <= 0) {
2387                 return NULL;
2388         }
2389
2390         pclose(f);
2391         buf[(tmp - str) + ret - 1] = '\0';
2392         memcpy(buf, str, tmp - str);
2393         free(str);
2394         return strdup(buf);
2395 }
2396
2397 /*
2398  * Return a copy of the input string with substrings of the form ${VARNAME}
2399  * substituted with the value of the environment variable VARNAME.  The
2400  * substitution always occurs, even if VARNAME is empty or the corresponding
2401  * environment variable undefined.
2402  */
2403 static char *option_dup_subs(const char *opt)
2404 {
2405         char out[OPT_LEN_MAX+1];
2406         char in[OPT_LEN_MAX+1];
2407         char *outptr = out;
2408         char *inptr = in;
2409         char *ch1, *ch2, *env;
2410         ssize_t nchr = OPT_LEN_MAX;
2411         size_t envlen;
2412
2413         if (strlen(opt) + 1 > OPT_LEN_MAX) {
2414                 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2415                 return NULL;
2416         }
2417
2418         in[OPT_LEN_MAX] = '\0';
2419         strncpy(in, opt, OPT_LEN_MAX);
2420
2421         while (*inptr && nchr > 0) {
2422                 if (inptr[0] == '$' && inptr[1] == '{') {
2423                         ch2 = strchr(inptr, '}');
2424                         if (ch2 && inptr+1 < ch2) {
2425                                 ch1 = inptr+2;
2426                                 inptr = ch2+1;
2427                                 *ch2 = '\0';
2428
2429                                 env = getenv(ch1);
2430                                 if (env) {
2431                                         envlen = strlen(env);
2432                                         if (envlen <= nchr) {
2433                                                 memcpy(outptr, env, envlen);
2434                                                 outptr += envlen;
2435                                                 nchr -= envlen;
2436                                         }
2437                                 }
2438
2439                                 continue;
2440                         }
2441                 }
2442
2443                 *outptr++ = *inptr++;
2444                 --nchr;
2445         }
2446
2447         *outptr = '\0';
2448         return strdup(out);
2449 }
2450
2451 /*
2452  * Look for reserved variable names and replace them with real values
2453  */
2454 static char *fio_keyword_replace(char *opt)
2455 {
2456         char *s;
2457         int i;
2458         int docalc = 0;
2459
2460         for (i = 0; fio_keywords[i].word != NULL; i++) {
2461                 struct fio_keyword *kw = &fio_keywords[i];
2462
2463                 while ((s = strstr(opt, kw->word)) != NULL) {
2464                         char *new = malloc(strlen(opt) + 1);
2465                         char *o_org = opt;
2466                         int olen = s - opt;
2467                         int len;
2468
2469                         /*
2470                          * Copy part of the string before the keyword and
2471                          * sprintf() the replacement after it.
2472                          */
2473                         memcpy(new, opt, olen);
2474                         len = sprintf(new + olen, "%s", kw->replace);
2475
2476                         /*
2477                          * If there's more in the original string, copy that
2478                          * in too
2479                          */
2480                         opt += strlen(kw->word) + olen;
2481                         if (strlen(opt))
2482                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2483
2484                         /*
2485                          * replace opt and free the old opt
2486                          */
2487                         opt = new;
2488                         free(o_org);
2489
2490                         docalc = 1;
2491                 }
2492         }
2493
2494         /*
2495          * Check for potential math and invoke bc, if possible
2496          */
2497         if (docalc)
2498                 opt = bc_calc(opt);
2499
2500         return opt;
2501 }
2502
2503 static char **dup_and_sub_options(char **opts, int num_opts)
2504 {
2505         int i;
2506         char **opts_copy = malloc(num_opts * sizeof(*opts));
2507         for (i = 0; i < num_opts; i++) {
2508                 opts_copy[i] = option_dup_subs(opts[i]);
2509                 if (!opts_copy[i])
2510                         continue;
2511                 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2512         }
2513         return opts_copy;
2514 }
2515
2516 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2517 {
2518         int i, ret, unknown;
2519         char **opts_copy;
2520
2521         sort_options(opts, options, num_opts);
2522         opts_copy = dup_and_sub_options(opts, num_opts);
2523
2524         for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2525                 struct fio_option *o;
2526                 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2527                                           td);
2528
2529                 if (opts_copy[i]) {
2530                         if (newret && !o) {
2531                                 unknown++;
2532                                 continue;
2533                         }
2534                         free(opts_copy[i]);
2535                         opts_copy[i] = NULL;
2536                 }
2537
2538                 ret |= newret;
2539         }
2540
2541         if (unknown) {
2542                 ret |= ioengine_load(td);
2543                 if (td->eo) {
2544                         sort_options(opts_copy, td->io_ops->options, num_opts);
2545                         opts = opts_copy;
2546                 }
2547                 for (i = 0; i < num_opts; i++) {
2548                         struct fio_option *o = NULL;
2549                         int newret = 1;
2550                         if (!opts_copy[i])
2551                                 continue;
2552
2553                         if (td->eo)
2554                                 newret = parse_option(opts_copy[i], opts[i],
2555                                                       td->io_ops->options, &o,
2556                                                       td->eo);
2557
2558                         ret |= newret;
2559                         if (!o)
2560                                 log_err("Bad option <%s>\n", opts[i]);
2561
2562                         free(opts_copy[i]);
2563                         opts_copy[i] = NULL;
2564                 }
2565         }
2566
2567         free(opts_copy);
2568         return ret;
2569 }
2570
2571 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2572 {
2573         return parse_cmd_option(opt, val, options, td);
2574 }
2575
2576 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2577                                 char *val)
2578 {
2579         return parse_cmd_option(opt, val, td->io_ops->options, td);
2580 }
2581
2582 void fio_fill_default_options(struct thread_data *td)
2583 {
2584         fill_default_options(td, options);
2585 }
2586
2587 int fio_show_option_help(const char *opt)
2588 {
2589         return show_cmd_help(options, opt);
2590 }
2591
2592 void options_mem_dupe(void *data, struct fio_option *options)
2593 {
2594         struct fio_option *o;
2595         char **ptr;
2596
2597         for (o = &options[0]; o->name; o++) {
2598                 if (o->type != FIO_OPT_STR_STORE)
2599                         continue;
2600
2601                 ptr = td_var(data, o->off1);
2602                 if (*ptr)
2603                         *ptr = strdup(*ptr);
2604         }
2605 }
2606
2607 /*
2608  * dupe FIO_OPT_STR_STORE options
2609  */
2610 void fio_options_mem_dupe(struct thread_data *td)
2611 {
2612         options_mem_dupe(&td->o, options);
2613
2614         if (td->eo && td->io_ops) {
2615                 void *oldeo = td->eo;
2616
2617                 td->eo = malloc(td->io_ops->option_struct_size);
2618                 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
2619                 options_mem_dupe(td->eo, td->io_ops->options);
2620         }
2621 }
2622
2623 unsigned int fio_get_kb_base(void *data)
2624 {
2625         struct thread_data *td = data;
2626         unsigned int kb_base = 0;
2627
2628         if (td)
2629                 kb_base = td->o.kb_base;
2630         if (!kb_base)
2631                 kb_base = 1024;
2632
2633         return kb_base;
2634 }
2635
2636 int add_option(struct fio_option *o)
2637 {
2638         struct fio_option *__o;
2639         int opt_index = 0;
2640
2641         __o = options;
2642         while (__o->name) {
2643                 opt_index++;
2644                 __o++;
2645         }
2646
2647         memcpy(&options[opt_index], o, sizeof(*o));
2648         return 0;
2649 }
2650
2651 void invalidate_profile_options(const char *prof_name)
2652 {
2653         struct fio_option *o;
2654
2655         o = options;
2656         while (o->name) {
2657                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
2658                         o->type = FIO_OPT_INVALID;
2659                         o->prof_name = NULL;
2660                 }
2661                 o++;
2662         }
2663 }
2664
2665 void add_opt_posval(const char *optname, const char *ival, const char *help)
2666 {
2667         struct fio_option *o;
2668         unsigned int i;
2669
2670         o = find_option(options, optname);
2671         if (!o)
2672                 return;
2673
2674         for (i = 0; i < PARSE_MAX_VP; i++) {
2675                 if (o->posval[i].ival)
2676                         continue;
2677
2678                 o->posval[i].ival = ival;
2679                 o->posval[i].help = help;
2680                 break;
2681         }
2682 }
2683
2684 void del_opt_posval(const char *optname, const char *ival)
2685 {
2686         struct fio_option *o;
2687         unsigned int i;
2688
2689         o = find_option(options, optname);
2690         if (!o)
2691                 return;
2692
2693         for (i = 0; i < PARSE_MAX_VP; i++) {
2694                 if (!o->posval[i].ival)
2695                         continue;
2696                 if (strcmp(o->posval[i].ival, ival))
2697                         continue;
2698
2699                 o->posval[i].ival = NULL;
2700                 o->posval[i].help = NULL;
2701         }
2702 }
2703
2704 void fio_options_free(struct thread_data *td)
2705 {
2706         options_free(options, td);
2707         if (td->eo && td->io_ops && td->io_ops->options) {
2708                 options_free(td->io_ops->options, td->eo);
2709                 free(td->eo);
2710                 td->eo = NULL;
2711         }
2712 }