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         exit(0);
 255         return 0;
 256 }
 257 #endif
 258
 259 static int str_fst_cb(void *data, const char *str)
 260 {
 261         struct thread_data *td = data;
 262         char *nr = get_opt_postfix(str);
 263
 264         td->file_service_nr = 1;
 265         if (nr)
 266                 td->file_service_nr = atoi(nr);
 267
 268         return 0;
 269 }
 270
 271 static int str_filename_cb(void *data, const char *input)
 272 {
 273         struct thread_data *td = data;
 274         char *fname, *str, *p;
 275
 276         p = str = strdup(input);
 277
 278         strip_blank_front(&str);
 279         strip_blank_end(str);
 280
 281         if (!td->files_index)
 282                 td->o.nr_files = 0;
 283
 284         while ((fname = strsep(&str, ":")) != NULL) {
 285                 if (!strlen(fname))
 286                         break;
 287                 add_file(td, fname);
 288                 td->o.nr_files++;
 289         }
 290
 291         free(p);
 292         return 0;
 293 }
 294
 295 static int str_directory_cb(void *data, const char fio_unused *str)
 296 {
 297         struct thread_data *td = data;
 298         struct stat sb;
 299
 300         if (lstat(td->o.directory, &sb) < 0) {
 301                 log_err("fio: %s is not a directory\n", td->o.directory);
 302                 td_verror(td, errno, "lstat");
 303                 return 1;
 304         }
 305         if (!S_ISDIR(sb.st_mode)) {
 306                 log_err("fio: %s is not a directory\n", td->o.directory);
 307                 return 1;
 308         }
 309
 310         return 0;
 311 }
 312
 313 static int str_opendir_cb(void *data, const char fio_unused *str)
 314 {
 315         struct thread_data *td = data;
 316
 317         if (!td->files_index)
 318                 td->o.nr_files = 0;
 319
 320         return add_dir_files(td, td->o.opendir);
 321 }
 322
 323 static int str_verify_offset_cb(void *data, unsigned int *off)
 324 {
 325         struct thread_data *td = data;
 326
 327         if (*off && *off < sizeof(struct verify_header)) {
 328                 log_err("fio: verify_offset too small\n");
 329                 return 1;
 330         }
 331
 332         td->o.verify_offset = *off;
 333         return 0;
 334 }
 335
 336 static int str_verify_pattern_cb(void *data, unsigned int *off)
 337 {
 338         struct thread_data *td = data;
 339         unsigned int msb;
 340
 341         msb = fls(*off);
 342         if (msb <= 8)
 343                 td->o.verify_pattern_bytes = 1;
 344         else if (msb <= 16)
 345                 td->o.verify_pattern_bytes = 2;
 346         else if (msb <= 24)
 347                 td->o.verify_pattern_bytes = 3;
 348         else
 349                 td->o.verify_pattern_bytes = 4;
 350
 351         td->o.verify_pattern = *off;
 352         return 0;
 353 }
 354
 355 #define __stringify_1(x)        #x
 356 #define __stringify(x)          __stringify_1(x)
 357
 358 /*
 359  * Map of job/command line options
 360  */
 361 static struct fio_option options[] = {
 362         {
 363                 .name   = "description",
 364                 .type   = FIO_OPT_STR_STORE,
 365                 .off1   = td_var_offset(description),
 366                 .help   = "Text job description",
 367         },
 368         {
 369                 .name   = "name",
 370                 .type   = FIO_OPT_STR_STORE,
 371                 .off1   = td_var_offset(name),
 372                 .help   = "Name of this job",
 373         },
 374         {
 375                 .name   = "directory",
 376                 .type   = FIO_OPT_STR_STORE,
 377                 .off1   = td_var_offset(directory),
 378                 .cb     = str_directory_cb,
 379                 .help   = "Directory to store files in",
 380         },
 381         {
 382                 .name   = "filename",
 383                 .type   = FIO_OPT_STR_STORE,
 384                 .off1   = td_var_offset(filename),
 385                 .cb     = str_filename_cb,
 386                 .help   = "File(s) to use for the workload",
 387         },
 388         {
 389                 .name   = "opendir",
 390                 .type   = FIO_OPT_STR_STORE,
 391                 .off1   = td_var_offset(opendir),
 392                 .cb     = str_opendir_cb,
 393                 .help   = "Recursively add files from this directory and down",
 394         },
 395         {
 396                 .name   = "rw",
 397                 .alias  = "readwrite",
 398                 .type   = FIO_OPT_STR,
 399                 .cb     = str_rw_cb,
 400                 .off1   = td_var_offset(td_ddir),
 401                 .help   = "IO direction",
 402                 .def    = "read",
 403                 .posval = {
 404                           { .ival = "read",
 405                             .oval = TD_DDIR_READ,
 406                             .help = "Sequential read",
 407                           },
 408                           { .ival = "write",
 409                             .oval = TD_DDIR_WRITE,
 410                             .help = "Sequential write",
 411                           },
 412                           { .ival = "randread",
 413                             .oval = TD_DDIR_RANDREAD,
 414                             .help = "Random read",
 415                           },
 416                           { .ival = "randwrite",
 417                             .oval = TD_DDIR_RANDWRITE,
 418                             .help = "Random write",
 419                           },
 420                           { .ival = "rw",
 421                             .oval = TD_DDIR_RW,
 422                             .help = "Sequential read and write mix",
 423                           },
 424                           { .ival = "randrw",
 425                             .oval = TD_DDIR_RANDRW,
 426                             .help = "Random read and write mix"
 427                           },
 428                 },
 429         },
 430         {
 431                 .name   = "ioengine",
 432                 .type   = FIO_OPT_STR_STORE,
 433                 .off1   = td_var_offset(ioengine),
 434                 .help   = "IO engine to use",
 435                 .def    = "sync",
 436                 .posval = {
 437                           { .ival = "sync",
 438                             .help = "Use read/write",
 439                           },
 440                           { .ival = "psync",
 441                             .help = "Use pread/pwrite",
 442                           },
 443                           { .ival = "vsync",
 444                              .help = "Use readv/writev",
 445                           },
 446 #ifdef FIO_HAVE_LIBAIO
 447                           { .ival = "libaio",
 448                             .help = "Linux native asynchronous IO",
 449                           },
 450 #endif
 451 #ifdef FIO_HAVE_POSIXAIO
 452                           { .ival = "posixaio",
 453                             .help = "POSIX asynchronous IO",
 454                           },
 455 #endif
 456                           { .ival = "mmap",
 457                             .help = "Memory mapped IO",
 458                           },
 459 #ifdef FIO_HAVE_SPLICE
 460                           { .ival = "splice",
 461                             .help = "splice/vmsplice based IO",
 462                           },
 463                           { .ival = "netsplice",
 464                             .help = "splice/vmsplice to/from the network",
 465                           },
 466 #endif
 467 #ifdef FIO_HAVE_SGIO
 468                           { .ival = "sg",
 469                             .help = "SCSI generic v3 IO",
 470                           },
 471 #endif
 472                           { .ival = "null",
 473                             .help = "Testing engine (no data transfer)",
 474                           },
 475                           { .ival = "net",
 476                             .help = "Network IO",
 477                           },
 478 #ifdef FIO_HAVE_SYSLET
 479                           { .ival = "syslet-rw",
 480                             .help = "syslet enabled async pread/pwrite IO",
 481                           },
 482 #endif
 483                           { .ival = "cpuio",
 484                             .help = "CPU cycler burner engine",
 485                           },
 486 #ifdef FIO_HAVE_GUASI
 487                           { .ival = "guasi",
 488                             .help = "GUASI IO engine",
 489                           },
 490 #endif
 491                           { .ival = "external",
 492                             .help = "Load external engine (append name)",
 493                           },
 494                 },
 495         },
 496         {
 497                 .name   = "iodepth",
 498                 .type   = FIO_OPT_INT,
 499                 .off1   = td_var_offset(iodepth),
 500                 .help   = "Amount of IO buffers to keep in flight",
 501                 .minval = 1,
 502                 .def    = "1",
 503         },
 504         {
 505                 .name   = "iodepth_batch",
 506                 .type   = FIO_OPT_INT,
 507                 .off1   = td_var_offset(iodepth_batch),
 508                 .help   = "Number of IO to submit in one go",
 509                 .parent = "iodepth",
 510                 .minval = 1,
 511                 .def    = "1",
 512         },
 513         {
 514                 .name   = "iodepth_low",
 515                 .type   = FIO_OPT_INT,
 516                 .off1   = td_var_offset(iodepth_low),
 517                 .help   = "Low water mark for queuing depth",
 518                 .parent = "iodepth",
 519         },
 520         {
 521                 .name   = "size",
 522                 .type   = FIO_OPT_STR_VAL,
 523                 .off1   = td_var_offset(size),
 524                 .minval = 1,
 525                 .help   = "Total size of device or files",
 526         },
 527         {
 528                 .name   = "fill_device",
 529                 .type   = FIO_OPT_BOOL,
 530                 .off1   = td_var_offset(fill_device),
 531                 .help   = "Write until an ENOSPC error occurs",
 532                 .def    = "0",
 533         },
 534         {
 535                 .name   = "filesize",
 536                 .type   = FIO_OPT_STR_VAL,
 537                 .off1   = td_var_offset(file_size_low),
 538                 .off2   = td_var_offset(file_size_high),
 539                 .minval = 1,
 540                 .help   = "Size of individual files",
 541         },
 542         {
 543                 .name   = "offset",
 544                 .alias  = "fileoffset",
 545                 .type   = FIO_OPT_STR_VAL,
 546                 .off1   = td_var_offset(start_offset),
 547                 .help   = "Start IO from this offset",
 548                 .def    = "0",
 549         },
 550         {
 551                 .name   = "bs",
 552                 .alias  = "blocksize",
 553                 .type   = FIO_OPT_STR_VAL_INT,
 554                 .off1   = td_var_offset(bs[DDIR_READ]),
 555                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 556                 .minval = 1,
 557                 .help   = "Block size unit",
 558                 .def    = "4k",
 559                 .parent = "rw",
 560         },
 561         {
 562                 .name   = "bsrange",
 563                 .alias  = "blocksize_range",
 564                 .type   = FIO_OPT_RANGE,
 565                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 566                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 567                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 568                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 569                 .minval = 1,
 570                 .help   = "Set block size range (in more detail than bs)",
 571                 .parent = "rw",
 572         },
 573         {
 574                 .name   = "bssplit",
 575                 .type   = FIO_OPT_STR,
 576                 .cb     = str_bssplit_cb,
 577                 .help   = "Set a specific mix of block sizes",
 578                 .parent = "rw",
 579         },
 580         {
 581                 .name   = "bs_unaligned",
 582                 .alias  = "blocksize_unaligned",
 583                 .type   = FIO_OPT_STR_SET,
 584                 .off1   = td_var_offset(bs_unaligned),
 585                 .help   = "Don't sector align IO buffer sizes",
 586                 .parent = "rw",
 587         },
 588         {
 589                 .name   = "randrepeat",
 590                 .type   = FIO_OPT_BOOL,
 591                 .off1   = td_var_offset(rand_repeatable),
 592                 .help   = "Use repeatable random IO pattern",
 593                 .def    = "1",
 594                 .parent = "rw",
 595         },
 596         {
 597                 .name   = "norandommap",
 598                 .type   = FIO_OPT_STR_SET,
 599                 .off1   = td_var_offset(norandommap),
 600                 .help   = "Accept potential duplicate random blocks",
 601                 .parent = "rw",
 602         },
 603         {
 604                 .name   = "nrfiles",
 605                 .type   = FIO_OPT_INT,
 606                 .off1   = td_var_offset(nr_files),
 607                 .help   = "Split job workload between this number of files",
 608                 .def    = "1",
 609         },
 610         {
 611                 .name   = "openfiles",
 612                 .type   = FIO_OPT_INT,
 613                 .off1   = td_var_offset(open_files),
 614                 .help   = "Number of files to keep open at the same time",
 615         },
 616         {
 617                 .name   = "file_service_type",
 618                 .type   = FIO_OPT_STR,
 619                 .cb     = str_fst_cb,
 620                 .off1   = td_var_offset(file_service_type),
 621                 .help   = "How to select which file to service next",
 622                 .def    = "roundrobin",
 623                 .posval = {
 624                           { .ival = "random",
 625                             .oval = FIO_FSERVICE_RANDOM,
 626                             .help = "Choose a file at random",
 627                           },
 628                           { .ival = "roundrobin",
 629                             .oval = FIO_FSERVICE_RR,
 630                             .help = "Round robin select files",
 631                           },
 632                 },
 633                 .parent = "nrfiles",
 634         },
 635         {
 636                 .name   = "fadvise_hint",
 637                 .type   = FIO_OPT_BOOL,
 638                 .off1   = td_var_offset(fadvise_hint),
 639                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 640                 .def    = "1",
 641         },
 642         {
 643                 .name   = "fsync",
 644                 .type   = FIO_OPT_INT,
 645                 .off1   = td_var_offset(fsync_blocks),
 646                 .help   = "Issue fsync for writes every given number of blocks",
 647                 .def    = "0",
 648         },
 649         {
 650                 .name   = "direct",
 651                 .type   = FIO_OPT_BOOL,
 652                 .off1   = td_var_offset(odirect),
 653                 .help   = "Use O_DIRECT IO (negates buffered)",
 654                 .def    = "0",
 655         },
 656         {
 657                 .name   = "buffered",
 658                 .type   = FIO_OPT_BOOL,
 659                 .off1   = td_var_offset(odirect),
 660                 .neg    = 1,
 661                 .help   = "Use buffered IO (negates direct)",
 662                 .def    = "1",
 663         },
 664         {
 665                 .name   = "overwrite",
 666                 .type   = FIO_OPT_BOOL,
 667                 .off1   = td_var_offset(overwrite),
 668                 .help   = "When writing, set whether to overwrite current data",
 669                 .def    = "0",
 670         },
 671         {
 672                 .name   = "loops",
 673                 .type   = FIO_OPT_INT,
 674                 .off1   = td_var_offset(loops),
 675                 .help   = "Number of times to run the job",
 676                 .def    = "1",
 677         },
 678         {
 679                 .name   = "numjobs",
 680                 .type   = FIO_OPT_INT,
 681                 .off1   = td_var_offset(numjobs),
 682                 .help   = "Duplicate this job this many times",
 683                 .def    = "1",
 684         },
 685         {
 686                 .name   = "startdelay",
 687                 .type   = FIO_OPT_INT,
 688                 .off1   = td_var_offset(start_delay),
 689                 .help   = "Only start job when this period has passed",
 690                 .def    = "0",
 691         },
 692         {
 693                 .name   = "runtime",
 694                 .alias  = "timeout",
 695                 .type   = FIO_OPT_STR_VAL_TIME,
 696                 .off1   = td_var_offset(timeout),
 697                 .help   = "Stop workload when this amount of time has passed",
 698                 .def    = "0",
 699         },
 700         {
 701                 .name   = "time_based",
 702                 .type   = FIO_OPT_STR_SET,
 703                 .off1   = td_var_offset(time_based),
 704                 .help   = "Keep running until runtime/timeout is met",
 705         },
 706         {
 707                 .name   = "mem",
 708                 .alias  = "iomem",
 709                 .type   = FIO_OPT_STR,
 710                 .cb     = str_mem_cb,
 711                 .off1   = td_var_offset(mem_type),
 712                 .help   = "Backing type for IO buffers",
 713                 .def    = "malloc",
 714                 .posval = {
 715                           { .ival = "malloc",
 716                             .oval = MEM_MALLOC,
 717                             .help = "Use malloc(3) for IO buffers",
 718                           },
 719                           { .ival = "shm",
 720                             .oval = MEM_SHM,
 721                             .help = "Use shared memory segments for IO buffers",
 722                           },
 723 #ifdef FIO_HAVE_HUGETLB
 724                           { .ival = "shmhuge",
 725                             .oval = MEM_SHMHUGE,
 726                             .help = "Like shm, but use huge pages",
 727                           },
 728 #endif
 729                           { .ival = "mmap",
 730                             .oval = MEM_MMAP,
 731                             .help = "Use mmap(2) (file or anon) for IO buffers",
 732                           },
 733 #ifdef FIO_HAVE_HUGETLB
 734                           { .ival = "mmaphuge",
 735                             .oval = MEM_MMAPHUGE,
 736                             .help = "Like mmap, but use huge pages",
 737                           },
 738 #endif
 739                   },
 740         },
 741         {
 742                 .name   = "verify",
 743                 .type   = FIO_OPT_STR,
 744                 .off1   = td_var_offset(verify),
 745                 .help   = "Verify data written",
 746                 .def    = "0",
 747                 .posval = {
 748                           { .ival = "0",
 749                             .oval = VERIFY_NONE,
 750                             .help = "Don't do IO verification",
 751                           },
 752                           { .ival = "md5",
 753                             .oval = VERIFY_MD5,
 754                             .help = "Use md5 checksums for verification",
 755                           },
 756                           { .ival = "crc64",
 757                             .oval = VERIFY_CRC64,
 758                             .help = "Use crc64 checksums for verification",
 759                           },
 760                           { .ival = "crc32",
 761                             .oval = VERIFY_CRC32,
 762                             .help = "Use crc32 checksums for verification",
 763                           },
 764                           { .ival = "crc16",
 765                             .oval = VERIFY_CRC16,
 766                             .help = "Use crc16 checksums for verification",
 767                           },
 768                           { .ival = "crc7",
 769                             .oval = VERIFY_CRC7,
 770                             .help = "Use crc7 checksums for verification",
 771                           },
 772                           { .ival = "sha256",
 773                             .oval = VERIFY_SHA256,
 774                             .help = "Use sha256 checksums for verification",
 775                           },
 776                           { .ival = "sha512",
 777                             .oval = VERIFY_SHA512,
 778                             .help = "Use sha512 checksums for verification",
 779                           },
 780                           { .ival = "meta",
 781                             .oval = VERIFY_META,
 782                             .help = "Use io information",
 783                           },
 784                           {
 785                             .ival = "null",
 786                             .oval = VERIFY_NULL,
 787                             .help = "Pretend to verify",
 788                           },
 789                 },
 790         },
 791         {
 792                 .name   = "do_verify",
 793                 .type   = FIO_OPT_BOOL,
 794                 .off1   = td_var_offset(do_verify),
 795                 .help   = "Run verification stage after write",
 796                 .def    = "1",
 797                 .parent = "verify",
 798         },
 799         {
 800                 .name   = "verifysort",
 801                 .type   = FIO_OPT_BOOL,
 802                 .off1   = td_var_offset(verifysort),
 803                 .help   = "Sort written verify blocks for read back",
 804                 .def    = "1",
 805                 .parent = "verify",
 806         },
 807         {
 808                 .name   = "verify_interval",
 809                 .type   = FIO_OPT_STR_VAL_INT,
 810                 .off1   = td_var_offset(verify_interval),
 811                 .minval = 2 * sizeof(struct verify_header),
 812                 .help   = "Store verify buffer header every N bytes",
 813                 .parent = "verify",
 814         },
 815         {
 816                 .name   = "verify_offset",
 817                 .type   = FIO_OPT_STR_VAL_INT,
 818                 .help   = "Offset verify header location by N bytes",
 819                 .def    = "0",
 820                 .cb     = str_verify_offset_cb,
 821                 .parent = "verify",
 822         },
 823         {
 824                 .name   = "verify_pattern",
 825                 .type   = FIO_OPT_INT,
 826                 .cb     = str_verify_pattern_cb,
 827                 .help   = "Fill pattern for IO buffers",
 828                 .parent = "verify",
 829         },
 830         {
 831                 .name   = "verify_fatal",
 832                 .type   = FIO_OPT_BOOL,
 833                 .off1   = td_var_offset(verify_fatal),
 834                 .def    = "0",
 835                 .help   = "Exit on a single verify failure, don't continue",
 836                 .parent = "verify",
 837         },
 838         {
 839                 .name   = "write_iolog",
 840                 .type   = FIO_OPT_STR_STORE,
 841                 .off1   = td_var_offset(write_iolog_file),
 842                 .help   = "Store IO pattern to file",
 843         },
 844         {
 845                 .name   = "read_iolog",
 846                 .type   = FIO_OPT_STR_STORE,
 847                 .off1   = td_var_offset(read_iolog_file),
 848                 .help   = "Playback IO pattern from file",
 849         },
 850         {
 851                 .name   = "exec_prerun",
 852                 .type   = FIO_OPT_STR_STORE,
 853                 .off1   = td_var_offset(exec_prerun),
 854                 .help   = "Execute this file prior to running job",
 855         },
 856         {
 857                 .name   = "exec_postrun",
 858                 .type   = FIO_OPT_STR_STORE,
 859                 .off1   = td_var_offset(exec_postrun),
 860                 .help   = "Execute this file after running job",
 861         },
 862 #ifdef FIO_HAVE_IOSCHED_SWITCH
 863         {
 864                 .name   = "ioscheduler",
 865                 .type   = FIO_OPT_STR_STORE,
 866                 .off1   = td_var_offset(ioscheduler),
 867                 .help   = "Use this IO scheduler on the backing device",
 868         },
 869 #endif
 870         {
 871                 .name   = "zonesize",
 872                 .type   = FIO_OPT_STR_VAL,
 873                 .off1   = td_var_offset(zone_size),
 874                 .help   = "Give size of an IO zone",
 875                 .def    = "0",
 876         },
 877         {
 878                 .name   = "zoneskip",
 879                 .type   = FIO_OPT_STR_VAL,
 880                 .off1   = td_var_offset(zone_skip),
 881                 .help   = "Space between IO zones",
 882                 .def    = "0",
 883         },
 884         {
 885                 .name   = "lockmem",
 886                 .type   = FIO_OPT_STR_VAL,
 887                 .cb     = str_lockmem_cb,
 888                 .help   = "Lock down this amount of memory",
 889                 .def    = "0",
 890         },
 891         {
 892                 .name   = "rwmixread",
 893                 .type   = FIO_OPT_INT,
 894                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 895                 .maxval = 100,
 896                 .help   = "Percentage of mixed workload that is reads",
 897                 .def    = "50",
 898         },
 899         {
 900                 .name   = "rwmixwrite",
 901                 .type   = FIO_OPT_INT,
 902                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 903                 .maxval = 100,
 904                 .help   = "Percentage of mixed workload that is writes",
 905                 .def    = "50",
 906         },
 907         {
 908                 .name   = "rwmixcycle",
 909                 .type   = FIO_OPT_INT,
 910                 .off1   = td_var_offset(rwmixcycle),
 911                 .help   = "Cycle period for mixed read/write workloads (msec)",
 912                 .def    = "500",
 913                 .parent = "rwmixread",
 914         },
 915         {
 916                 .name   = "nice",
 917                 .type   = FIO_OPT_INT,
 918                 .off1   = td_var_offset(nice),
 919                 .help   = "Set job CPU nice value",
 920                 .minval = -19,
 921                 .maxval = 20,
 922                 .def    = "0",
 923         },
 924 #ifdef FIO_HAVE_IOPRIO
 925         {
 926                 .name   = "prio",
 927                 .type   = FIO_OPT_INT,
 928                 .cb     = str_prio_cb,
 929                 .help   = "Set job IO priority value",
 930                 .minval = 0,
 931                 .maxval = 7,
 932         },
 933         {
 934                 .name   = "prioclass",
 935                 .type   = FIO_OPT_INT,
 936                 .cb     = str_prioclass_cb,
 937                 .help   = "Set job IO priority class",
 938                 .minval = 0,
 939                 .maxval = 3,
 940         },
 941 #endif
 942         {
 943                 .name   = "thinktime",
 944                 .type   = FIO_OPT_INT,
 945                 .off1   = td_var_offset(thinktime),
 946                 .help   = "Idle time between IO buffers (usec)",
 947                 .def    = "0",
 948         },
 949         {
 950                 .name   = "thinktime_spin",
 951                 .type   = FIO_OPT_INT,
 952                 .off1   = td_var_offset(thinktime_spin),
 953                 .help   = "Start think time by spinning this amount (usec)",
 954                 .def    = "0",
 955                 .parent = "thinktime",
 956         },
 957         {
 958                 .name   = "thinktime_blocks",
 959                 .type   = FIO_OPT_INT,
 960                 .off1   = td_var_offset(thinktime_blocks),
 961                 .help   = "IO buffer period between 'thinktime'",
 962                 .def    = "1",
 963                 .parent = "thinktime",
 964         },
 965         {
 966                 .name   = "rate",
 967                 .type   = FIO_OPT_INT,
 968                 .off1   = td_var_offset(rate),
 969                 .help   = "Set bandwidth rate",
 970         },
 971         {
 972                 .name   = "ratemin",
 973                 .type   = FIO_OPT_INT,
 974                 .off1   = td_var_offset(ratemin),
 975                 .help   = "Job must meet this rate or it will be shutdown",
 976                 .parent = "rate",
 977         },
 978         {
 979                 .name   = "rate_iops",
 980                 .type   = FIO_OPT_INT,
 981                 .off1   = td_var_offset(rate_iops),
 982                 .help   = "Limit IO used to this number of IO operations/sec",
 983         },
 984         {
 985                 .name   = "rate_iops_min",
 986                 .type   = FIO_OPT_INT,
 987                 .off1   = td_var_offset(rate_iops_min),
 988                 .help   = "Job must meet this rate or it will be shutdown",
 989                 .parent = "rate_iops",
 990         },
 991         {
 992                 .name   = "ratecycle",
 993                 .type   = FIO_OPT_INT,
 994                 .off1   = td_var_offset(ratecycle),
 995                 .help   = "Window average for rate limits (msec)",
 996                 .def    = "1000",
 997                 .parent = "rate",
 998         },
 999         {
1000                 .name   = "invalidate",
1001                 .type   = FIO_OPT_BOOL,
1002                 .off1   = td_var_offset(invalidate_cache),
1003                 .help   = "Invalidate buffer/page cache prior to running job",
1004                 .def    = "1",
1005         },
1006         {
1007                 .name   = "sync",
1008                 .type   = FIO_OPT_BOOL,
1009                 .off1   = td_var_offset(sync_io),
1010                 .help   = "Use O_SYNC for buffered writes",
1011                 .def    = "0",
1012                 .parent = "buffered",
1013         },
1014         {
1015                 .name   = "bwavgtime",
1016                 .type   = FIO_OPT_INT,
1017                 .off1   = td_var_offset(bw_avg_time),
1018                 .help   = "Time window over which to calculate bandwidth (msec)",
1019                 .def    = "500",
1020         },
1021         {
1022                 .name   = "create_serialize",
1023                 .type   = FIO_OPT_BOOL,
1024                 .off1   = td_var_offset(create_serialize),
1025                 .help   = "Serialize creating of job files",
1026                 .def    = "1",
1027         },
1028         {
1029                 .name   = "create_fsync",
1030                 .type   = FIO_OPT_BOOL,
1031                 .off1   = td_var_offset(create_fsync),
1032                 .help   = "Fsync file after creation",
1033                 .def    = "1",
1034         },
1035         {
1036                 .name   = "cpuload",
1037                 .type   = FIO_OPT_INT,
1038                 .off1   = td_var_offset(cpuload),
1039                 .help   = "Use this percentage of CPU",
1040         },
1041         {
1042                 .name   = "cpuchunks",
1043                 .type   = FIO_OPT_INT,
1044                 .off1   = td_var_offset(cpucycle),
1045                 .help   = "Length of the CPU burn cycles (usecs)",
1046                 .def    = "50000",
1047                 .parent = "cpuload",
1048         },
1049 #ifdef FIO_HAVE_CPU_AFFINITY
1050         {
1051                 .name   = "cpumask",
1052                 .type   = FIO_OPT_INT,
1053                 .cb     = str_cpumask_cb,
1054                 .help   = "CPU affinity mask",
1055         },
1056         {
1057                 .name   = "cpus_allowed",
1058                 .type   = FIO_OPT_STR,
1059                 .cb     = str_cpus_allowed_cb,
1060                 .help   = "Set CPUs allowed",
1061         },
1062 #endif
1063         {
1064                 .name   = "end_fsync",
1065                 .type   = FIO_OPT_BOOL,
1066                 .off1   = td_var_offset(end_fsync),
1067                 .help   = "Include fsync at the end of job",
1068                 .def    = "0",
1069         },
1070         {
1071                 .name   = "fsync_on_close",
1072                 .type   = FIO_OPT_BOOL,
1073                 .off1   = td_var_offset(fsync_on_close),
1074                 .help   = "fsync files on close",
1075                 .def    = "0",
1076         },
1077         {
1078                 .name   = "unlink",
1079                 .type   = FIO_OPT_BOOL,
1080                 .off1   = td_var_offset(unlink),
1081                 .help   = "Unlink created files after job has completed",
1082                 .def    = "0",
1083         },
1084         {
1085                 .name   = "exitall",
1086                 .type   = FIO_OPT_STR_SET,
1087                 .cb     = str_exitall_cb,
1088                 .help   = "Terminate all jobs when one exits",
1089         },
1090         {
1091                 .name   = "stonewall",
1092                 .type   = FIO_OPT_STR_SET,
1093                 .off1   = td_var_offset(stonewall),
1094                 .help   = "Insert a hard barrier between this job and previous",
1095         },
1096         {
1097                 .name   = "new_group",
1098                 .type   = FIO_OPT_STR_SET,
1099                 .off1   = td_var_offset(new_group),
1100                 .help   = "Mark the start of a new group (for reporting)",
1101         },
1102         {
1103                 .name   = "thread",
1104                 .type   = FIO_OPT_STR_SET,
1105                 .off1   = td_var_offset(use_thread),
1106                 .help   = "Use threads instead of forks",
1107         },
1108         {
1109                 .name   = "write_bw_log",
1110                 .type   = FIO_OPT_STR_SET,
1111                 .off1   = td_var_offset(write_bw_log),
1112                 .help   = "Write log of bandwidth during run",
1113         },
1114         {
1115                 .name   = "write_lat_log",
1116                 .type   = FIO_OPT_STR_SET,
1117                 .off1   = td_var_offset(write_lat_log),
1118                 .help   = "Write log of latency during run",
1119         },
1120         {
1121                 .name   = "hugepage-size",
1122                 .type   = FIO_OPT_STR_VAL,
1123                 .off1   = td_var_offset(hugepage_size),
1124                 .help   = "When using hugepages, specify size of each page",
1125                 .def    = __stringify(FIO_HUGE_PAGE),
1126         },
1127         {
1128                 .name   = "group_reporting",
1129                 .type   = FIO_OPT_STR_SET,
1130                 .off1   = td_var_offset(group_reporting),
1131                 .help   = "Do reporting on a per-group basis",
1132         },
1133         {
1134                 .name   = "zero_buffers",
1135                 .type   = FIO_OPT_STR_SET,
1136                 .off1   = td_var_offset(zero_buffers),
1137                 .help   = "Init IO buffers to all zeroes",
1138         },
1139 #ifdef FIO_HAVE_DISK_UTIL
1140         {
1141                 .name   = "disk_util",
1142                 .type   = FIO_OPT_BOOL,
1143                 .off1   = td_var_offset(do_disk_util),
1144                 .help   = "Log disk utilization stats",
1145                 .def    = "1",
1146         },
1147 #endif
1148         {
1149                 .name = NULL,
1150         },
1151 };
1152
1153 void fio_options_dup_and_init(struct option *long_options)
1154 {
1155         struct fio_option *o;
1156         unsigned int i;
1157
1158         options_init(options);
1159
1160         i = 0;
1161         while (long_options[i].name)
1162                 i++;
1163
1164         o = &options[0];
1165         while (o->name) {
1166                 long_options[i].name = o->name;
1167                 long_options[i].val = FIO_GETOPT_JOB;
1168                 if (o->type == FIO_OPT_STR_SET)
1169                         long_options[i].has_arg = no_argument;
1170                 else
1171                         long_options[i].has_arg = required_argument;
1172
1173                 i++;
1174                 o++;
1175                 assert(i < FIO_NR_OPTIONS);
1176         }
1177 }
1178
1179 int fio_option_parse(struct thread_data *td, const char *opt)
1180 {
1181         return parse_option(opt, options, td);
1182 }
1183
1184 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1185 {
1186         return parse_cmd_option(opt, val, options, td);
1187 }
1188
1189 void fio_fill_default_options(struct thread_data *td)
1190 {
1191         fill_default_options(td, options);
1192 }
1193
1194 int fio_show_option_help(const char *opt)
1195 {
1196         return show_cmd_help(options, opt);
1197 }
1198
1199 static void __options_mem(struct thread_data *td, int alloc)
1200 {
1201         struct thread_options *o = &td->o;
1202         struct fio_option *opt;
1203         char **ptr;
1204         int i;
1205
1206         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1207                 if (opt->type != FIO_OPT_STR_STORE)
1208                         continue;
1209
1210                 ptr = (void *) o + opt->off1;
1211                 if (*ptr) {
1212                         if (alloc)
1213                                 *ptr = strdup(*ptr);
1214                         else {
1215                                 free(*ptr);
1216                                 *ptr = NULL;
1217                         }
1218                 }
1219         }
1220 }
1221
1222 /*
1223  * dupe FIO_OPT_STR_STORE options
1224  */
1225 void options_mem_dupe(struct thread_data *td)
1226 {
1227         __options_mem(td, 1);
1228 }
1229
1230 void options_mem_free(struct thread_data fio_unused *td)
1231 {
1232 #if 0
1233         __options_mem(td, 0);
1234 #endif
1235 }