init.c

   1 /*
   2  * This file contains job initialization and setup functions.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <getopt.h>
  12 #include <sys/ipc.h>
  13 #include <sys/shm.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16
  17 #include "fio.h"
  18 #include "parse.h"
  19
  20 static char fio_version_string[] = "fio 1.18";
  21
  22 #define FIO_RANDSEED            (0xb1899bedUL)
  23
  24 static char **ini_file;
  25 static int max_jobs = MAX_JOBS;
  26 static int dump_cmdline;
  27
  28 struct thread_data def_thread;
  29 struct thread_data *threads = NULL;
  30
  31 int exitall_on_terminate = 0;
  32 int terse_output = 0;
  33 int eta_print;
  34 unsigned long long mlock_size = 0;
  35 FILE *f_out = NULL;
  36 FILE *f_err = NULL;
  37
  38 int write_bw_log = 0;
  39 int read_only = 0;
  40
  41 static int def_timeout = 0;
  42 static int write_lat_log = 0;
  43
  44 static int prev_group_jobs;
  45
  46 unsigned long fio_debug = 0;
  47
  48 /*
  49  * Command line options. These will contain the above, plus a few
  50  * extra that only pertain to fio itself and not jobs.
  51  */
  52 static struct option long_options[FIO_NR_OPTIONS] = {
  53         {
  54                 .name           = "output",
  55                 .has_arg        = required_argument,
  56                 .val            = 'o',
  57         },
  58         {
  59                 .name           = "timeout",
  60                 .has_arg        = required_argument,
  61                 .val            = 't',
  62         },
  63         {
  64                 .name           = "latency-log",
  65                 .has_arg        = required_argument,
  66                 .val            = 'l',
  67         },
  68         {
  69                 .name           = "bandwidth-log",
  70                 .has_arg        = required_argument,
  71                 .val            = 'b',
  72         },
  73         {
  74                 .name           = "minimal",
  75                 .has_arg        = optional_argument,
  76                 .val            = 'm',
  77         },
  78         {
  79                 .name           = "version",
  80                 .has_arg        = no_argument,
  81                 .val            = 'v',
  82         },
  83         {
  84                 .name           = "help",
  85                 .has_arg        = no_argument,
  86                 .val            = 'h',
  87         },
  88         {
  89                 .name           = "cmdhelp",
  90                 .has_arg        = optional_argument,
  91                 .val            = 'c',
  92         },
  93         {
  94                 .name           = "showcmd",
  95                 .has_arg        = no_argument,
  96                 .val            = 's',
  97         },
  98         {
  99                 .name           = "readonly",
 100                 .has_arg        = no_argument,
 101                 .val            = 'r',
 102         },
 103         {
 104                 .name           = "eta",
 105                 .has_arg        = required_argument,
 106                 .val            = 'e',
 107         },
 108         {
 109                 .name           = "debug",
 110                 .has_arg        = required_argument,
 111                 .val            = 'd',
 112         },
 113         {
 114                 .name           = NULL,
 115         },
 116 };
 117
 118 FILE *get_f_out()
 119 {
 120         return f_out;
 121 }
 122
 123 FILE *get_f_err()
 124 {
 125         return f_err;
 126 }
 127
 128 /*
 129  * Return a free job structure.
 130  */
 131 static struct thread_data *get_new_job(int global, struct thread_data *parent)
 132 {
 133         struct thread_data *td;
 134
 135         if (global)
 136                 return &def_thread;
 137         if (thread_number >= max_jobs)
 138                 return NULL;
 139
 140         td = &threads[thread_number++];
 141         *td = *parent;
 142
 143         dup_files(td, parent);
 144         options_mem_dupe(td);
 145
 146         td->thread_number = thread_number;
 147         return td;
 148 }
 149
 150 static void put_job(struct thread_data *td)
 151 {
 152         if (td == &def_thread)
 153                 return;
 154
 155         if (td->error)
 156                 log_info("fio: %s\n", td->verror);
 157
 158         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 159         thread_number--;
 160 }
 161
 162 static int setup_rate(struct thread_data *td)
 163 {
 164         unsigned long nr_reads_per_msec;
 165         unsigned long long rate;
 166         unsigned int bs;
 167
 168         if (!td->o.rate && !td->o.rate_iops)
 169                 return 0;
 170
 171         if (td_rw(td))
 172                 bs = td->o.rw_min_bs;
 173         else if (td_read(td))
 174                 bs = td->o.min_bs[DDIR_READ];
 175         else
 176                 bs = td->o.min_bs[DDIR_WRITE];
 177
 178         if (td->o.rate) {
 179                 rate = td->o.rate;
 180                 nr_reads_per_msec = (rate * 1024 * 1000LL) / bs;
 181         } else
 182                 nr_reads_per_msec = td->o.rate_iops * 1000UL;
 183
 184         if (!nr_reads_per_msec) {
 185                 log_err("rate lower than supported\n");
 186                 return -1;
 187         }
 188
 189         td->rate_usec_cycle = 1000000000ULL / nr_reads_per_msec;
 190         td->rate_pending_usleep = 0;
 191         return 0;
 192 }
 193
 194 /*
 195  * Lazy way of fixing up options that depend on each other. We could also
 196  * define option callback handlers, but this is easier.
 197  */
 198 static int fixup_options(struct thread_data *td)
 199 {
 200         struct thread_options *o = &td->o;
 201
 202         if (read_only && td_write(td)) {
 203                 log_err("fio: job <%s> has write bit set, but fio is in read-only mode\n", td->o.name);
 204                 return 1;
 205         }
 206
 207         if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
 208                 o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
 209
 210         if (o->write_iolog_file && o->read_iolog_file) {
 211                 log_err("fio: read iolog overrides write_iolog\n");
 212                 free(o->write_iolog_file);
 213                 o->write_iolog_file = NULL;
 214         }
 215
 216         /*
 217          * only really works for sequential io for now, and with 1 file
 218          */
 219         if (o->zone_size && td_random(td) && o->open_files == 1)
 220                 o->zone_size = 0;
 221
 222         /*
 223          * Reads can do overwrites, we always need to pre-create the file
 224          */
 225         if (td_read(td) || td_rw(td))
 226                 o->overwrite = 1;
 227
 228         if (!o->min_bs[DDIR_READ])
 229                 o->min_bs[DDIR_READ]= o->bs[DDIR_READ];
 230         if (!o->max_bs[DDIR_READ])
 231                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 232         if (!o->min_bs[DDIR_WRITE])
 233                 o->min_bs[DDIR_WRITE]= o->bs[DDIR_WRITE];
 234         if (!o->max_bs[DDIR_WRITE])
 235                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 236
 237         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 238
 239         if (!o->file_size_high)
 240                 o->file_size_high = o->file_size_low;
 241
 242         if (o->norandommap && o->verify != VERIFY_NONE) {
 243                 log_err("fio: norandommap given, verify disabled\n");
 244                 o->verify = VERIFY_NONE;
 245         }
 246         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 247                 log_err("fio: bs_unaligned may not work with raw io\n");
 248
 249         /*
 250          * thinktime_spin must be less than thinktime
 251          */
 252         if (o->thinktime_spin > o->thinktime)
 253                 o->thinktime_spin = o->thinktime;
 254
 255         /*
 256          * The low water mark cannot be bigger than the iodepth
 257          */
 258         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 259                 /*
 260                  * syslet work around - if the workload is sequential,
 261                  * we want to let the queue drain all the way down to
 262                  * avoid seeking between async threads
 263                  */
 264                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 265                         o->iodepth_low = 1;
 266                 else
 267                         o->iodepth_low = o->iodepth;
 268         }
 269
 270         /*
 271          * If batch number isn't set, default to the same as iodepth
 272          */
 273         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 274                 o->iodepth_batch = o->iodepth;
 275
 276         if (o->nr_files > td->files_index)
 277                 o->nr_files = td->files_index;
 278
 279         if (o->open_files > o->nr_files || !o->open_files)
 280                 o->open_files = o->nr_files;
 281
 282         if ((o->rate && o->rate_iops) || (o->ratemin && o->rate_iops_min)) {
 283                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 284                 return 1;
 285         }
 286         if ((o->rate < o->ratemin) || (o->rate_iops < o->rate_iops_min)) {
 287                 log_err("fio: minimum rate exceeds rate\n");
 288                 return 1;
 289         }
 290
 291         if (!o->timeout && o->time_based) {
 292                 log_err("fio: time_based requires a runtime/timeout setting\n");
 293                 o->time_based = 0;
 294         }
 295
 296         if (o->fill_device && !o->size)
 297                 o->size = ULONG_LONG_MAX;
 298
 299         if (td_rw(td) && td->o.verify != VERIFY_NONE)
 300                 log_info("fio: mixed read/write workload with verify. May not "
 301                  "work as expected, unless you pre-populated the file\n");
 302
 303         return 0;
 304 }
 305
 306 /*
 307  * This function leaks the buffer
 308  */
 309 static char *to_kmg(unsigned int val)
 310 {
 311         char *buf = malloc(32);
 312         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 313         char *p = post;
 314
 315         do {
 316                 if (val & 1023)
 317                         break;
 318
 319                 val >>= 10;
 320                 p++;
 321         } while (*p);
 322
 323         snprintf(buf, 31, "%u%c", val, *p);
 324         return buf;
 325 }
 326
 327 /* External engines are specified by "external:name.o") */
 328 static const char *get_engine_name(const char *str)
 329 {
 330         char *p = strstr(str, ":");
 331
 332         if (!p)
 333                 return str;
 334
 335         p++;
 336         strip_blank_front(&p);
 337         strip_blank_end(p);
 338         return p;
 339 }
 340
 341 static int exists_and_not_file(const char *filename)
 342 {
 343         struct stat sb;
 344
 345         if (lstat(filename, &sb) == -1)
 346                 return 0;
 347
 348         if (S_ISREG(sb.st_mode))
 349                 return 0;
 350
 351         return 1;
 352 }
 353
 354 /*
 355  * Initialize the various random states we need (random io, block size ranges,
 356  * read/write mix, etc).
 357  */
 358 static int init_random_state(struct thread_data *td)
 359 {
 360         unsigned long seeds[6];
 361         int fd;
 362
 363         fd = open("/dev/urandom", O_RDONLY);
 364         if (fd == -1) {
 365                 td_verror(td, errno, "open");
 366                 return 1;
 367         }
 368
 369         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 370                 td_verror(td, EIO, "read");
 371                 close(fd);
 372                 return 1;
 373         }
 374
 375         close(fd);
 376
 377         os_random_seed(seeds[0], &td->bsrange_state);
 378         os_random_seed(seeds[1], &td->verify_state);
 379         os_random_seed(seeds[2], &td->rwmix_state);
 380
 381         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 382                 os_random_seed(seeds[3], &td->next_file_state);
 383
 384         os_random_seed(seeds[5], &td->file_size_state);
 385
 386         if (!td_random(td))
 387                 return 0;
 388
 389         if (td->o.rand_repeatable)
 390                 seeds[4] = FIO_RANDSEED * td->thread_number;
 391
 392         os_random_seed(seeds[4], &td->random_state);
 393         return 0;
 394 }
 395
 396 /*
 397  * Adds a job to the list of things todo. Sanitizes the various options
 398  * to make sure we don't have conflicts, and initializes various
 399  * members of td.
 400  */
 401 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 402 {
 403         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 404                                    "randread", "randwrite", "randrw" };
 405         unsigned int i;
 406         const char *engine;
 407         char fname[PATH_MAX];
 408         int numjobs, file_alloced;
 409
 410         /*
 411          * the def_thread is just for options, it's not a real job
 412          */
 413         if (td == &def_thread)
 414                 return 0;
 415
 416         /*
 417          * if we are just dumping the output command line, don't add the job
 418          */
 419         if (dump_cmdline) {
 420                 put_job(td);
 421                 return 0;
 422         }
 423
 424         engine = get_engine_name(td->o.ioengine);
 425         td->io_ops = load_ioengine(td, engine);
 426         if (!td->io_ops) {
 427                 log_err("fio: failed to load engine %s\n", engine);
 428                 goto err;
 429         }
 430
 431         if (td->o.use_thread)
 432                 nr_thread++;
 433         else
 434                 nr_process++;
 435
 436         if (td->o.odirect)
 437                 td->io_ops->flags |= FIO_RAWIO;
 438
 439         file_alloced = 0;
 440         if (!td->o.filename && !td->files_index) {
 441                 file_alloced = 1;
 442
 443                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 444                         add_file(td, jobname);
 445                 else {
 446                         for (i = 0; i < td->o.nr_files; i++) {
 447                                 sprintf(fname, "%s.%d.%d", jobname, td->thread_number, i);
 448                                 add_file(td, fname);
 449                         }
 450                 }
 451         }
 452
 453         if (fixup_options(td))
 454                 goto err;
 455
 456         if (td->io_ops->flags & FIO_DISKLESSIO) {
 457                 struct fio_file *f;
 458
 459                 for_each_file(td, f, i)
 460                         f->real_file_size = -1ULL;
 461         }
 462
 463         td->mutex = fio_sem_init(0);
 464
 465         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 466         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 467         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 468         td->ddir_nr = td->o.ddir_nr;
 469
 470         if ((td->o.stonewall || td->o.numjobs > 1 || td->o.new_group)
 471              && prev_group_jobs) {
 472                 prev_group_jobs = 0;
 473                 groupid++;
 474         }
 475
 476         td->groupid = groupid;
 477         prev_group_jobs++;
 478
 479         if (init_random_state(td))
 480                 goto err;
 481
 482         if (setup_rate(td))
 483                 goto err;
 484
 485         if (td->o.write_lat_log) {
 486                 setup_log(&td->ts.slat_log);
 487                 setup_log(&td->ts.clat_log);
 488         }
 489         if (td->o.write_bw_log)
 490                 setup_log(&td->ts.bw_log);
 491
 492         if (!td->o.name)
 493                 td->o.name = strdup(jobname);
 494
 495         if (!terse_output) {
 496                 if (!job_add_num) {
 497                         if (!strcmp(td->io_ops->name, "cpuio"))
 498                                 log_info("%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->o.name, td->o.cpuload, td->o.cpucycle);
 499                         else {
 500                                 char *c1, *c2, *c3, *c4;
 501
 502                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 503                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 504                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 505                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 506
 507                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->o.name, td->groupid, ddir_str[td->o.td_ddir], c1, c2, c3, c4, td->io_ops->name, td->o.iodepth);
 508
 509                                 free(c1);
 510                                 free(c2);
 511                                 free(c3);
 512                                 free(c4);
 513                         }
 514                 } else if (job_add_num == 1)
 515                         log_info("...\n");
 516         }
 517
 518         /*
 519          * recurse add identical jobs, clear numjobs and stonewall options
 520          * as they don't apply to sub-jobs
 521          */
 522         numjobs = td->o.numjobs;
 523         while (--numjobs) {
 524                 struct thread_data *td_new = get_new_job(0, td);
 525
 526                 if (!td_new)
 527                         goto err;
 528
 529                 td_new->o.numjobs = 1;
 530                 td_new->o.stonewall = 0;
 531                 td_new->o.new_group = 0;
 532
 533                 if (file_alloced) {
 534                         td_new->o.filename = NULL;
 535                         td_new->files_index = 0;
 536                         td_new->files = NULL;
 537                 }
 538
 539                 job_add_num = numjobs - 1;
 540
 541                 if (add_job(td_new, jobname, job_add_num))
 542                         goto err;
 543         }
 544
 545         return 0;
 546 err:
 547         put_job(td);
 548         return -1;
 549 }
 550
 551 static int is_empty_or_comment(char *line)
 552 {
 553         unsigned int i;
 554
 555         for (i = 0; i < strlen(line); i++) {
 556                 if (line[i] == ';')
 557                         return 1;
 558                 if (line[i] == '#')
 559                         return 1;
 560                 if (!isspace(line[i]) && !iscntrl(line[i]))
 561                         return 0;
 562         }
 563
 564         return 1;
 565 }
 566
 567 /*
 568  * This is our [ini] type file parser.
 569  */
 570 static int parse_jobs_ini(char *file, int stonewall_flag)
 571 {
 572         unsigned int global;
 573         struct thread_data *td;
 574         char *string, *name;
 575         FILE *f;
 576         char *p;
 577         int ret = 0, stonewall;
 578         int first_sect = 1;
 579         int skip_fgets = 0;
 580
 581         if (!strcmp(file, "-"))
 582                 f = stdin;
 583         else
 584                 f = fopen(file, "r");
 585
 586         if (!f) {
 587                 perror("fopen job file");
 588                 return 1;
 589         }
 590
 591         string = malloc(4096);
 592
 593         /*
 594          * it's really 256 + small bit, 280 should suffice
 595          */
 596         name = malloc(280);
 597         memset(name, 0, 280);
 598
 599         stonewall = stonewall_flag;
 600         do {
 601                 /*
 602                  * if skip_fgets is set, we already have loaded a line we
 603                  * haven't handled.
 604                  */
 605                 if (!skip_fgets) {
 606                         p = fgets(string, 4095, f);
 607                         if (!p)
 608                                 break;
 609                 }
 610
 611                 skip_fgets = 0;
 612                 strip_blank_front(&p);
 613                 strip_blank_end(p);
 614
 615                 if (is_empty_or_comment(p))
 616                         continue;
 617                 if (sscanf(p, "[%255s]", name) != 1) {
 618                         log_err("fio: option <%s> outside of [] job section\n", p);
 619                         break;
 620                 }
 621
 622                 global = !strncmp(name, "global", 6);
 623
 624                 name[strlen(name) - 1] = '\0';
 625
 626                 if (dump_cmdline) {
 627                         if (first_sect)
 628                                 log_info("fio ");
 629                         if (!global)
 630                                 log_info("--name=%s ", name);
 631                         first_sect = 0;
 632                 }
 633
 634                 td = get_new_job(global, &def_thread);
 635                 if (!td) {
 636                         ret = 1;
 637                         break;
 638                 }
 639
 640                 /*
 641                  * Seperate multiple job files by a stonewall
 642                  */
 643                 if (!global && stonewall) {
 644                         td->o.stonewall = stonewall;
 645                         stonewall = 0;
 646                 }
 647
 648                 while ((p = fgets(string, 4096, f)) != NULL) {
 649                         if (is_empty_or_comment(p))
 650                                 continue;
 651
 652                         strip_blank_front(&p);
 653
 654                         /*
 655                          * new section, break out and make sure we don't
 656                          * fgets() a new line at the top.
 657                          */
 658                         if (p[0] == '[') {
 659                                 skip_fgets = 1;
 660                                 break;
 661                         }
 662
 663                         strip_blank_end(p);
 664
 665                         /*
 666                          * Don't break here, continue parsing options so we
 667                          * dump all the bad ones. Makes trial/error fixups
 668                          * easier on the user.
 669                          */
 670                         ret |= fio_option_parse(td, p);
 671                         if (!ret && dump_cmdline)
 672                                 log_info("--%s ", p);
 673                 }
 674
 675                 if (!ret)
 676                         ret = add_job(td, name, 0);
 677                 else {
 678                         log_err("fio: job %s dropped\n", name);
 679                         put_job(td);
 680                 }
 681         } while (!ret);
 682
 683         if (dump_cmdline)
 684                 log_info("\n");
 685
 686         free(string);
 687         free(name);
 688         if (f != stdin)
 689                 fclose(f);
 690         return ret;
 691 }
 692
 693 static int fill_def_thread(void)
 694 {
 695         memset(&def_thread, 0, sizeof(def_thread));
 696
 697         fio_getaffinity(getpid(), &def_thread.o.cpumask);
 698
 699         /*
 700          * fill default options
 701          */
 702         fio_fill_default_options(&def_thread);
 703
 704         def_thread.o.timeout = def_timeout;
 705         def_thread.o.write_bw_log = write_bw_log;
 706         def_thread.o.write_lat_log = write_lat_log;
 707
 708         return 0;
 709 }
 710
 711 static void free_shm(void)
 712 {
 713         struct shmid_ds sbuf;
 714
 715         if (threads) {
 716                 shmdt((void *) threads);
 717                 threads = NULL;
 718                 shmctl(shm_id, IPC_RMID, &sbuf);
 719         }
 720 }
 721
 722 /*
 723  * The thread area is shared between the main process and the job
 724  * threads/processes. So setup a shared memory segment that will hold
 725  * all the job info.
 726  */
 727 static int setup_thread_area(void)
 728 {
 729         /*
 730          * 1024 is too much on some machines, scale max_jobs if
 731          * we get a failure that looks like too large a shm segment
 732          */
 733         do {
 734                 size_t size = max_jobs * sizeof(struct thread_data);
 735
 736                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 737                 if (shm_id != -1)
 738                         break;
 739                 if (errno != EINVAL) {
 740                         perror("shmget");
 741                         break;
 742                 }
 743
 744                 max_jobs >>= 1;
 745         } while (max_jobs);
 746
 747         if (shm_id == -1)
 748                 return 1;
 749
 750         threads = shmat(shm_id, NULL, 0);
 751         if (threads == (void *) -1) {
 752                 perror("shmat");
 753                 return 1;
 754         }
 755
 756         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 757         atexit(free_shm);
 758         return 0;
 759 }
 760
 761 static void usage(const char *name)
 762 {
 763         printf("%s\n", fio_version_string);
 764         printf("%s [options] [job options] <job file(s)>\n", name);
 765         printf("\t--debug=options\tEnable debug logging\n");
 766         printf("\t--output\tWrite output to file\n");
 767         printf("\t--timeout\tRuntime in seconds\n");
 768         printf("\t--latency-log\tGenerate per-job latency logs\n");
 769         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
 770         printf("\t--minimal\tMinimal (terse) output\n");
 771         printf("\t--version\tPrint version info and exit\n");
 772         printf("\t--help\t\tPrint this page\n");
 773         printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
 774         printf("\t--showcmd\tTurn a job file into command line options\n");
 775         printf("\t--eta=when\tWhen ETA estimate should be printed\n");
 776         printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
 777 }
 778
 779 #ifdef FIO_INC_DEBUG
 780 struct debug_level debug_levels[] = {
 781         { .name = "process",    .shift = FD_PROCESS, },
 782         { .name = "file",       .shift = FD_FILE, },
 783         { .name = "io",         .shift = FD_IO, },
 784         { .name = "mem",        .shift = FD_MEM, },
 785         { .name = "blktrace",   .shift = FD_BLKTRACE },
 786         { .name = "verify",     .shift = FD_VERIFY },
 787         { },
 788 };
 789
 790 static void set_debug(const char *string)
 791 {
 792         struct debug_level *dl;
 793         char *p = (char *) string;
 794         char *opt;
 795         int i;
 796
 797         if (!strcmp(string, "?") || !strcmp(string, "help")) {
 798                 int i;
 799
 800                 log_info("fio: dumping debug options:");
 801                 for (i = 0; debug_levels[i].name; i++) {
 802                         dl = &debug_levels[i];
 803                         log_info("%s,", dl->name);
 804                 }
 805                 log_info("all\n");
 806                 return;
 807         } else if (!strcmp(string, "all")) {
 808                 fio_debug = ~0UL;
 809                 return;
 810         }
 811
 812         while ((opt = strsep(&p, ",")) != NULL) {
 813                 int found = 0;
 814
 815                 for (i = 0; debug_levels[i].name; i++) {
 816                         dl = &debug_levels[i];
 817                         if (!strncmp(opt, dl->name, strlen(opt))) {
 818                                 log_info("fio: set debug option %s\n", opt);
 819                                 found = 1;
 820                                 fio_debug |= (1UL << dl->shift);
 821                                 break;
 822                         }
 823                 }
 824
 825                 if (!found)
 826                         log_err("fio: debug mask %s not found\n", opt);
 827         }
 828 }
 829 #else
 830 static void set_debug(const char *string)
 831 {
 832         log_err("fio: debug tracing not included in build\n");
 833 }
 834 #endif
 835
 836 static int parse_cmd_line(int argc, char *argv[])
 837 {
 838         struct thread_data *td = NULL;
 839         int c, ini_idx = 0, lidx, ret, dont_add_job = 0;
 840
 841         while ((c = getopt_long_only(argc, argv, "", long_options, &lidx)) != -1) {
 842                 switch (c) {
 843                 case 't':
 844                         def_timeout = atoi(optarg);
 845                         break;
 846                 case 'l':
 847                         write_lat_log = 1;
 848                         break;
 849                 case 'w':
 850                         write_bw_log = 1;
 851                         break;
 852                 case 'o':
 853                         f_out = fopen(optarg, "w+");
 854                         if (!f_out) {
 855                                 perror("fopen output");
 856                                 exit(1);
 857                         }
 858                         f_err = f_out;
 859                         break;
 860                 case 'm':
 861                         terse_output = 1;
 862                         break;
 863                 case 'h':
 864                         usage(argv[0]);
 865                         exit(0);
 866                 case 'c':
 867                         exit(fio_show_option_help(optarg));
 868                 case 's':
 869                         dump_cmdline = 1;
 870                         break;
 871                 case 'r':
 872                         read_only = 1;
 873                         break;
 874                 case 'v':
 875                         printf("%s\n", fio_version_string);
 876                         exit(0);
 877                 case 'e':
 878                         if (!strcmp("always", optarg))
 879                                 eta_print = FIO_ETA_ALWAYS;
 880                         else if (!strcmp("never", optarg))
 881                                 eta_print = FIO_ETA_NEVER;
 882                         break;
 883                 case 'd':
 884                         set_debug(optarg);
 885                         break;
 886                 case FIO_GETOPT_JOB: {
 887                         const char *opt = long_options[lidx].name;
 888                         char *val = optarg;
 889
 890                         if (!strncmp(opt, "name", 4) && td) {
 891                                 ret = add_job(td, td->o.name ?: "fio", 0);
 892                                 if (ret) {
 893                                         put_job(td);
 894                                         return 0;
 895                                 }
 896                                 td = NULL;
 897                         }
 898                         if (!td) {
 899                                 int global = 0;
 900
 901                                 if (strncmp(opt, "name", 4) ||
 902                                     !strncmp(val, "global", 6))
 903                                         global = 1;
 904
 905                                 td = get_new_job(global, &def_thread);
 906                                 if (!td)
 907                                         return 0;
 908                         }
 909
 910                         ret = fio_cmd_option_parse(td, opt, val);
 911                         if (ret)
 912                                 dont_add_job = 1;
 913                         break;
 914                 }
 915                 default:
 916                         break;
 917                 }
 918         }
 919
 920         if (td) {
 921                 if (dont_add_job)
 922                         put_job(td);
 923                 else {
 924                         ret = add_job(td, td->o.name ?: "fio", 0);
 925                         if (ret)
 926                                 put_job(td);
 927                 }
 928         }
 929
 930         while (optind < argc) {
 931                 ini_idx++;
 932                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
 933                 ini_file[ini_idx - 1] = strdup(argv[optind]);
 934                 optind++;
 935         }
 936
 937         return ini_idx;
 938 }
 939
 940 int parse_options(int argc, char *argv[])
 941 {
 942         int job_files, i;
 943
 944         f_out = stdout;
 945         f_err = stderr;
 946
 947         fio_options_dup_and_init(long_options);
 948
 949         if (setup_thread_area())
 950                 return 1;
 951         if (fill_def_thread())
 952                 return 1;
 953
 954         job_files = parse_cmd_line(argc, argv);
 955
 956         for (i = 0; i < job_files; i++) {
 957                 if (fill_def_thread())
 958                         return 1;
 959                 if (parse_jobs_ini(ini_file[i], i))
 960                         return 1;
 961                 free(ini_file[i]);
 962         }
 963
 964         free(ini_file);
 965         options_mem_free(&def_thread);
 966
 967         if (!thread_number) {
 968                 if (dump_cmdline)
 969                         return 0;
 970
 971                 log_err("No jobs defined(s)\n");
 972                 usage(argv[0]);
 973                 return 1;
 974         }
 975
 976         return 0;
 977 }