options.c

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