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