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 #include "smalloc.h"
  20 #include "filehash.h"
  21 #include "verify.h"
  22
  23 static char fio_version_string[] = "fio 1.35";
  24
  25 #define FIO_RANDSEED            (0xb1899bedUL)
  26
  27 static char **ini_file;
  28 static int max_jobs = MAX_JOBS;
  29 static int dump_cmdline;
  30
  31 static struct thread_data def_thread;
  32 struct thread_data *threads = NULL;
  33
  34 int exitall_on_terminate = 0;
  35 int terse_output = 0;
  36 int eta_print;
  37 unsigned long long mlock_size = 0;
  38 FILE *f_out = NULL;
  39 FILE *f_err = NULL;
  40 char *job_section = NULL;
  41
  42 int write_bw_log = 0;
  43 int read_only = 0;
  44
  45 static int def_timeout;
  46 static int write_lat_log;
  47
  48 static int prev_group_jobs;
  49
  50 unsigned long fio_debug = 0;
  51 unsigned int fio_debug_jobno = -1;
  52 unsigned int *fio_debug_jobp = NULL;
  53
  54 /*
  55  * Command line options. These will contain the above, plus a few
  56  * extra that only pertain to fio itself and not jobs.
  57  */
  58 static struct option l_opts[FIO_NR_OPTIONS] = {
  59         {
  60                 .name           = "output",
  61                 .has_arg        = required_argument,
  62                 .val            = 'o',
  63         },
  64         {
  65                 .name           = "timeout",
  66                 .has_arg        = required_argument,
  67                 .val            = 't',
  68         },
  69         {
  70                 .name           = "latency-log",
  71                 .has_arg        = required_argument,
  72                 .val            = 'l',
  73         },
  74         {
  75                 .name           = "bandwidth-log",
  76                 .has_arg        = required_argument,
  77                 .val            = 'b',
  78         },
  79         {
  80                 .name           = "minimal",
  81                 .has_arg        = optional_argument,
  82                 .val            = 'm',
  83         },
  84         {
  85                 .name           = "version",
  86                 .has_arg        = no_argument,
  87                 .val            = 'v',
  88         },
  89         {
  90                 .name           = "help",
  91                 .has_arg        = no_argument,
  92                 .val            = 'h',
  93         },
  94         {
  95                 .name           = "cmdhelp",
  96                 .has_arg        = optional_argument,
  97                 .val            = 'c',
  98         },
  99         {
 100                 .name           = "showcmd",
 101                 .has_arg        = no_argument,
 102                 .val            = 's',
 103         },
 104         {
 105                 .name           = "readonly",
 106                 .has_arg        = no_argument,
 107                 .val            = 'r',
 108         },
 109         {
 110                 .name           = "eta",
 111                 .has_arg        = required_argument,
 112                 .val            = 'e',
 113         },
 114         {
 115                 .name           = "debug",
 116                 .has_arg        = required_argument,
 117                 .val            = 'd',
 118         },
 119         {
 120                 .name           = "section",
 121                 .has_arg        = required_argument,
 122                 .val            = 'x',
 123         },
 124         {
 125                 .name           = "alloc-size",
 126                 .has_arg        = required_argument,
 127                 .val            = 'a',
 128         },
 129         {
 130                 .name           = "profile",
 131                 .has_arg        = required_argument,
 132                 .val            = 'p',
 133         },
 134         {
 135                 .name           = NULL,
 136         },
 137 };
 138
 139 static const char *tiobench_opts[] = {
 140         "buffered=0", "size=4*1024*$mb_memory", "bs=4k", "timeout=600",
 141         "numjobs=4", "group_reporting", "thread", "overwrite=1",
 142         "filename=.fio.tio.1:.fio.tio.2:.fio.tio.3:.fio.tio.4",
 143         "name=seqwrite", "rw=write", "end_fsync=1",
 144         "name=randwrite", "stonewall", "rw=randwrite", "end_fsync=1",
 145         "name=seqread", "stonewall", "rw=read",
 146         "name=randread", "stonewall", "rw=randread", NULL,
 147 };
 148
 149 static const char **fio_prof_strings[PROFILE_END] = {
 150         NULL,
 151         tiobench_opts,
 152 };
 153
 154 static const char *profiles[PROFILE_END] = {
 155         "none",
 156         "tiobench",
 157 };
 158
 159 FILE *get_f_out()
 160 {
 161         return f_out;
 162 }
 163
 164 FILE *get_f_err()
 165 {
 166         return f_err;
 167 }
 168
 169 /*
 170  * Return a free job structure.
 171  */
 172 static struct thread_data *get_new_job(int global, struct thread_data *parent)
 173 {
 174         struct thread_data *td;
 175
 176         if (global)
 177                 return &def_thread;
 178         if (thread_number >= max_jobs)
 179                 return NULL;
 180
 181         td = &threads[thread_number++];
 182         *td = *parent;
 183
 184         dup_files(td, parent);
 185         options_mem_dupe(td);
 186
 187         td->thread_number = thread_number;
 188         return td;
 189 }
 190
 191 static void put_job(struct thread_data *td)
 192 {
 193         if (td == &def_thread)
 194                 return;
 195
 196         if (td->error)
 197                 log_info("fio: %s\n", td->verror);
 198
 199         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 200         thread_number--;
 201 }
 202
 203 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 204 {
 205         unsigned int bs = td->o.min_bs[ddir];
 206         unsigned long long rate;
 207         unsigned long ios_per_msec;
 208
 209         if (td->o.rate[ddir]) {
 210                 rate = td->o.rate[ddir];
 211                 ios_per_msec = (rate * 1000LL) / bs;
 212         } else
 213                 ios_per_msec = td->o.rate_iops[ddir] * 1000UL;
 214
 215         if (!ios_per_msec) {
 216                 log_err("rate lower than supported\n");
 217                 return -1;
 218         }
 219
 220         td->rate_usec_cycle[ddir] = 1000000000ULL / ios_per_msec;
 221         td->rate_pending_usleep[ddir] = 0;
 222         return 0;
 223 }
 224
 225 static int setup_rate(struct thread_data *td)
 226 {
 227         int ret = 0;
 228
 229         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 230                 ret = __setup_rate(td, DDIR_READ);
 231         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 232                 ret |= __setup_rate(td, DDIR_WRITE);
 233
 234         return ret;
 235 }
 236
 237 static int fixed_block_size(struct thread_options *o)
 238 {
 239         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 240                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 241                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
 242 }
 243
 244 /*
 245  * Lazy way of fixing up options that depend on each other. We could also
 246  * define option callback handlers, but this is easier.
 247  */
 248 static int fixup_options(struct thread_data *td)
 249 {
 250         struct thread_options *o = &td->o;
 251
 252 #ifndef FIO_HAVE_PSHARED_MUTEX
 253         if (!td->o.use_thread) {
 254                 log_info("fio: this platform does not support process shared"
 255                          " mutexes, forcing use of threads. Use the 'thread'"
 256                          " option to get rid of this warning.\n");
 257                 td->o.use_thread = 1;
 258         }
 259 #endif
 260
 261         if (o->write_iolog_file && o->read_iolog_file) {
 262                 log_err("fio: read iolog overrides write_iolog\n");
 263                 free(o->write_iolog_file);
 264                 o->write_iolog_file = NULL;
 265         }
 266
 267         /*
 268          * only really works for sequential io for now, and with 1 file
 269          */
 270         if (o->zone_size && td_random(td) && o->open_files == 1)
 271                 o->zone_size = 0;
 272
 273         /*
 274          * Reads can do overwrites, we always need to pre-create the file
 275          */
 276         if (td_read(td) || td_rw(td))
 277                 o->overwrite = 1;
 278
 279         if (!o->min_bs[DDIR_READ])
 280                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 281         if (!o->max_bs[DDIR_READ])
 282                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 283         if (!o->min_bs[DDIR_WRITE])
 284                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 285         if (!o->max_bs[DDIR_WRITE])
 286                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 287
 288         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 289
 290         /*
 291          * For random IO, allow blockalign offset other than min_bs.
 292          */
 293         if (!o->ba[DDIR_READ] || !td_random(td))
 294                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 295         if (!o->ba[DDIR_WRITE] || !td_random(td))
 296                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 297
 298         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 299             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
 300             !td->o.norandommap) {
 301                 log_err("fio: Any use of blockalign= turns off randommap\n");
 302                 td->o.norandommap = 1;
 303         }
 304
 305         if (!o->file_size_high)
 306                 o->file_size_high = o->file_size_low;
 307
 308         if (o->norandommap && o->verify != VERIFY_NONE
 309             && !fixed_block_size(o))  {
 310                 log_err("fio: norandommap given for variable block sizes, "
 311                         "verify disabled\n");
 312                 o->verify = VERIFY_NONE;
 313         }
 314         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 315                 log_err("fio: bs_unaligned may not work with raw io\n");
 316
 317         /*
 318          * thinktime_spin must be less than thinktime
 319          */
 320         if (o->thinktime_spin > o->thinktime)
 321                 o->thinktime_spin = o->thinktime;
 322
 323         /*
 324          * The low water mark cannot be bigger than the iodepth
 325          */
 326         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 327                 /*
 328                  * syslet work around - if the workload is sequential,
 329                  * we want to let the queue drain all the way down to
 330                  * avoid seeking between async threads
 331                  */
 332                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 333                         o->iodepth_low = 1;
 334                 else
 335                         o->iodepth_low = o->iodepth;
 336         }
 337
 338         /*
 339          * If batch number isn't set, default to the same as iodepth
 340          */
 341         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 342                 o->iodepth_batch = o->iodepth;
 343
 344         if (o->nr_files > td->files_index)
 345                 o->nr_files = td->files_index;
 346
 347         if (o->open_files > o->nr_files || !o->open_files)
 348                 o->open_files = o->nr_files;
 349
 350         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
 351             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
 352                 o->rate_iops_min[1]))) {
 353                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 354                 return 1;
 355         }
 356         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
 357             (o->rate_iops[0] < o->rate_iops_min[0]) ||
 358             (o->rate_iops[1] < o->rate_iops_min[1])) {
 359                 log_err("fio: minimum rate exceeds rate\n");
 360                 return 1;
 361         }
 362
 363         if (!o->timeout && o->time_based) {
 364                 log_err("fio: time_based requires a runtime/timeout setting\n");
 365                 o->time_based = 0;
 366         }
 367
 368         if (o->fill_device && !o->size)
 369                 o->size = -1ULL;
 370
 371         if (td_rw(td) && td->o.verify != VERIFY_NONE)
 372                 log_info("fio: mixed read/write workload with verify. May not "
 373                  "work as expected, unless you pre-populated the file\n");
 374
 375         if (td->o.verify != VERIFY_NONE)
 376                 td->o.refill_buffers = 1;
 377
 378         if (td->o.pre_read) {
 379                 td->o.invalidate_cache = 0;
 380                 if (td->io_ops->flags & FIO_PIPEIO)
 381                         log_info("fio: cannot pre-read files with an IO engine"
 382                                  " that isn't seekable. Pre-read disabled.\n");
 383         }
 384
 385         return 0;
 386 }
 387
 388 /*
 389  * This function leaks the buffer
 390  */
 391 static char *to_kmg(unsigned int val)
 392 {
 393         char *buf = malloc(32);
 394         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 395         char *p = post;
 396
 397         do {
 398                 if (val & 1023)
 399                         break;
 400
 401                 val >>= 10;
 402                 p++;
 403         } while (*p);
 404
 405         snprintf(buf, 31, "%u%c", val, *p);
 406         return buf;
 407 }
 408
 409 /* External engines are specified by "external:name.o") */
 410 static const char *get_engine_name(const char *str)
 411 {
 412         char *p = strstr(str, ":");
 413
 414         if (!p)
 415                 return str;
 416
 417         p++;
 418         strip_blank_front(&p);
 419         strip_blank_end(p);
 420         return p;
 421 }
 422
 423 static int exists_and_not_file(const char *filename)
 424 {
 425         struct stat sb;
 426
 427         if (lstat(filename, &sb) == -1)
 428                 return 0;
 429
 430         if (S_ISREG(sb.st_mode))
 431                 return 0;
 432
 433         return 1;
 434 }
 435
 436 void td_fill_rand_seeds(struct thread_data *td)
 437 {
 438         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 439         os_random_seed(td->rand_seeds[1], &td->verify_state);
 440         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 441
 442         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 443                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 444
 445         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 446
 447         if (!td_random(td))
 448                 return;
 449
 450         if (td->o.rand_repeatable)
 451                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 452
 453         os_random_seed(td->rand_seeds[4], &td->random_state);
 454 }
 455
 456 /*
 457  * Initialize the various random states we need (random io, block size ranges,
 458  * read/write mix, etc).
 459  */
 460 static int init_random_state(struct thread_data *td)
 461 {
 462         int fd;
 463
 464         fd = open("/dev/urandom", O_RDONLY);
 465         if (fd == -1) {
 466                 td_verror(td, errno, "open");
 467                 return 1;
 468         }
 469
 470         if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) <
 471             (int) sizeof(td->rand_seeds)) {
 472                 td_verror(td, EIO, "read");
 473                 close(fd);
 474                 return 1;
 475         }
 476
 477         close(fd);
 478         td_fill_rand_seeds(td);
 479         return 0;
 480 }
 481
 482 /*
 483  * Adds a job to the list of things todo. Sanitizes the various options
 484  * to make sure we don't have conflicts, and initializes various
 485  * members of td.
 486  */
 487 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 488 {
 489         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 490                                    "randread", "randwrite", "randrw" };
 491         unsigned int i;
 492         const char *engine;
 493         char fname[PATH_MAX];
 494         int numjobs, file_alloced;
 495
 496         /*
 497          * the def_thread is just for options, it's not a real job
 498          */
 499         if (td == &def_thread)
 500                 return 0;
 501
 502         /*
 503          * if we are just dumping the output command line, don't add the job
 504          */
 505         if (dump_cmdline) {
 506                 put_job(td);
 507                 return 0;
 508         }
 509
 510         engine = get_engine_name(td->o.ioengine);
 511         td->io_ops = load_ioengine(td, engine);
 512         if (!td->io_ops) {
 513                 log_err("fio: failed to load engine %s\n", engine);
 514                 goto err;
 515         }
 516
 517         if (td->o.use_thread)
 518                 nr_thread++;
 519         else
 520                 nr_process++;
 521
 522         if (td->o.odirect)
 523                 td->io_ops->flags |= FIO_RAWIO;
 524
 525         file_alloced = 0;
 526         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 527                 file_alloced = 1;
 528
 529                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 530                         add_file(td, jobname);
 531                 else {
 532                         for (i = 0; i < td->o.nr_files; i++) {
 533                                 sprintf(fname, "%s.%d.%d", jobname,
 534                                                         td->thread_number, i);
 535                                 add_file(td, fname);
 536                         }
 537                 }
 538         }
 539
 540         if (fixup_options(td))
 541                 goto err;
 542
 543         if (td->io_ops->flags & FIO_DISKLESSIO) {
 544                 struct fio_file *f;
 545
 546                 for_each_file(td, f, i)
 547                         f->real_file_size = -1ULL;
 548         }
 549
 550         td->mutex = fio_mutex_init(0);
 551
 552         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
 553         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
 554         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 555         td->ddir_nr = td->o.ddir_nr;
 556
 557         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 558                 prev_group_jobs = 0;
 559                 groupid++;
 560         }
 561
 562         td->groupid = groupid;
 563         prev_group_jobs++;
 564
 565         if (init_random_state(td))
 566                 goto err;
 567
 568         if (setup_rate(td))
 569                 goto err;
 570
 571         if (td->o.write_lat_log) {
 572                 setup_log(&td->ts.slat_log);
 573                 setup_log(&td->ts.clat_log);
 574         }
 575         if (td->o.write_bw_log)
 576                 setup_log(&td->ts.bw_log);
 577
 578         if (!td->o.name)
 579                 td->o.name = strdup(jobname);
 580
 581         if (!terse_output) {
 582                 if (!job_add_num) {
 583                         if (!strcmp(td->io_ops->name, "cpuio")) {
 584                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 585                                          " cpucycle=%u\n", td->o.name,
 586                                                         td->o.cpuload,
 587                                                         td->o.cpucycle);
 588                         } else {
 589                                 char *c1, *c2, *c3, *c4;
 590
 591                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 592                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 593                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 594                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 595
 596                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
 597                                          " ioengine=%s, iodepth=%u\n",
 598                                                 td->o.name, td->groupid,
 599                                                 ddir_str[td->o.td_ddir],
 600                                                 c1, c2, c3, c4,
 601                                                 td->io_ops->name,
 602                                                 td->o.iodepth);
 603
 604                                 free(c1);
 605                                 free(c2);
 606                                 free(c3);
 607                                 free(c4);
 608                         }
 609                 } else if (job_add_num == 1)
 610                         log_info("...\n");
 611         }
 612
 613         /*
 614          * recurse add identical jobs, clear numjobs and stonewall options
 615          * as they don't apply to sub-jobs
 616          */
 617         numjobs = td->o.numjobs;
 618         while (--numjobs) {
 619                 struct thread_data *td_new = get_new_job(0, td);
 620
 621                 if (!td_new)
 622                         goto err;
 623
 624                 td_new->o.numjobs = 1;
 625                 td_new->o.stonewall = 0;
 626                 td_new->o.new_group = 0;
 627
 628                 if (file_alloced) {
 629                         td_new->o.filename = NULL;
 630                         td_new->files_index = 0;
 631                         td_new->files_size = 0;
 632                         td_new->files = NULL;
 633                 }
 634
 635                 job_add_num = numjobs - 1;
 636
 637                 if (add_job(td_new, jobname, job_add_num))
 638                         goto err;
 639         }
 640
 641         return 0;
 642 err:
 643         put_job(td);
 644         return -1;
 645 }
 646
 647 static int skip_this_section(const char *name)
 648 {
 649         if (!job_section)
 650                 return 0;
 651         if (!strncmp(name, "global", 6))
 652                 return 0;
 653
 654         return strcmp(job_section, name);
 655 }
 656
 657 static int is_empty_or_comment(char *line)
 658 {
 659         unsigned int i;
 660
 661         for (i = 0; i < strlen(line); i++) {
 662                 if (line[i] == ';')
 663                         return 1;
 664                 if (line[i] == '#')
 665                         return 1;
 666                 if (!isspace(line[i]) && !iscntrl(line[i]))
 667                         return 0;
 668         }
 669
 670         return 1;
 671 }
 672
 673 /*
 674  * This is our [ini] type file parser.
 675  */
 676 static int parse_jobs_ini(char *file, int stonewall_flag)
 677 {
 678         unsigned int global;
 679         struct thread_data *td;
 680         char *string, *name;
 681         FILE *f;
 682         char *p;
 683         int ret = 0, stonewall;
 684         int first_sect = 1;
 685         int skip_fgets = 0;
 686         int inside_skip = 0;
 687         char **opts;
 688         int i, alloc_opts, num_opts;
 689
 690         if (!strcmp(file, "-"))
 691                 f = stdin;
 692         else
 693                 f = fopen(file, "r");
 694
 695         if (!f) {
 696                 perror("fopen job file");
 697                 return 1;
 698         }
 699
 700         string = malloc(4096);
 701
 702         /*
 703          * it's really 256 + small bit, 280 should suffice
 704          */
 705         name = malloc(280);
 706         memset(name, 0, 280);
 707
 708         alloc_opts = 8;
 709         opts = malloc(sizeof(char *) * alloc_opts);
 710         num_opts = 0;
 711
 712         stonewall = stonewall_flag;
 713         do {
 714                 /*
 715                  * if skip_fgets is set, we already have loaded a line we
 716                  * haven't handled.
 717                  */
 718                 if (!skip_fgets) {
 719                         p = fgets(string, 4095, f);
 720                         if (!p)
 721                                 break;
 722                 }
 723
 724                 skip_fgets = 0;
 725                 strip_blank_front(&p);
 726                 strip_blank_end(p);
 727
 728                 if (is_empty_or_comment(p))
 729                         continue;
 730                 if (sscanf(p, "[%255s]", name) != 1) {
 731                         if (inside_skip)
 732                                 continue;
 733                         log_err("fio: option <%s> outside of [] job section\n",
 734                                                                         p);
 735                         break;
 736                 }
 737
 738                 if (skip_this_section(name)) {
 739                         inside_skip = 1;
 740                         continue;
 741                 } else
 742                         inside_skip = 0;
 743
 744                 global = !strncmp(name, "global", 6);
 745
 746                 name[strlen(name) - 1] = '\0';
 747
 748                 if (dump_cmdline) {
 749                         if (first_sect)
 750                                 log_info("fio ");
 751                         if (!global)
 752                                 log_info("--name=%s ", name);
 753                         first_sect = 0;
 754                 }
 755
 756                 td = get_new_job(global, &def_thread);
 757                 if (!td) {
 758                         ret = 1;
 759                         break;
 760                 }
 761
 762                 /*
 763                  * Seperate multiple job files by a stonewall
 764                  */
 765                 if (!global && stonewall) {
 766                         td->o.stonewall = stonewall;
 767                         stonewall = 0;
 768                 }
 769
 770                 num_opts = 0;
 771                 memset(opts, 0, alloc_opts * sizeof(char *));
 772
 773                 while ((p = fgets(string, 4096, f)) != NULL) {
 774                         if (is_empty_or_comment(p))
 775                                 continue;
 776
 777                         strip_blank_front(&p);
 778
 779                         /*
 780                          * new section, break out and make sure we don't
 781                          * fgets() a new line at the top.
 782                          */
 783                         if (p[0] == '[') {
 784                                 skip_fgets = 1;
 785                                 break;
 786                         }
 787
 788                         strip_blank_end(p);
 789
 790                         if (num_opts == alloc_opts) {
 791                                 alloc_opts <<= 1;
 792                                 opts = realloc(opts,
 793                                                 alloc_opts * sizeof(char *));
 794                         }
 795
 796                         opts[num_opts] = strdup(p);
 797                         num_opts++;
 798                 }
 799
 800                 ret = fio_options_parse(td, opts, num_opts);
 801                 if (!ret) {
 802                         if (dump_cmdline)
 803                                 for (i = 0; i < num_opts; i++)
 804                                         log_info("--%s ", opts[i]);
 805
 806                         ret = add_job(td, name, 0);
 807                 } else {
 808                         log_err("fio: job %s dropped\n", name);
 809                         put_job(td);
 810                 }
 811
 812                 for (i = 0; i < num_opts; i++)
 813                         free(opts[i]);
 814                 num_opts = 0;
 815         } while (!ret);
 816
 817         if (dump_cmdline)
 818                 log_info("\n");
 819
 820         for (i = 0; i < num_opts; i++)
 821                 free(opts[i]);
 822
 823         free(string);
 824         free(name);
 825         free(opts);
 826         if (f != stdin)
 827                 fclose(f);
 828         return ret;
 829 }
 830
 831 static int fill_def_thread(void)
 832 {
 833         memset(&def_thread, 0, sizeof(def_thread));
 834
 835         fio_getaffinity(getpid(), &def_thread.o.cpumask);
 836
 837         /*
 838          * fill default options
 839          */
 840         fio_fill_default_options(&def_thread);
 841
 842         def_thread.o.timeout = def_timeout;
 843         def_thread.o.write_bw_log = write_bw_log;
 844         def_thread.o.write_lat_log = write_lat_log;
 845
 846         return 0;
 847 }
 848
 849 static void free_shm(void)
 850 {
 851         struct shmid_ds sbuf;
 852
 853         if (threads) {
 854                 void *tp = threads;
 855
 856                 threads = NULL;
 857                 file_hash_exit();
 858                 fio_debug_jobp = NULL;
 859                 shmdt(tp);
 860                 shmctl(shm_id, IPC_RMID, &sbuf);
 861         }
 862
 863         scleanup();
 864 }
 865
 866 /*
 867  * The thread area is shared between the main process and the job
 868  * threads/processes. So setup a shared memory segment that will hold
 869  * all the job info. We use the end of the region for keeping track of
 870  * open files across jobs, for file sharing.
 871  */
 872 static int setup_thread_area(void)
 873 {
 874         void *hash;
 875
 876         /*
 877          * 1024 is too much on some machines, scale max_jobs if
 878          * we get a failure that looks like too large a shm segment
 879          */
 880         do {
 881                 size_t size = max_jobs * sizeof(struct thread_data);
 882
 883                 size += file_hash_size;
 884                 size += sizeof(unsigned int);
 885
 886                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 887                 if (shm_id != -1)
 888                         break;
 889                 if (errno != EINVAL) {
 890                         perror("shmget");
 891                         break;
 892                 }
 893
 894                 max_jobs >>= 1;
 895         } while (max_jobs);
 896
 897         if (shm_id == -1)
 898                 return 1;
 899
 900         threads = shmat(shm_id, NULL, 0);
 901         if (threads == (void *) -1) {
 902                 perror("shmat");
 903                 return 1;
 904         }
 905
 906         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 907         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 908         fio_debug_jobp = (void *) hash + file_hash_size;
 909         *fio_debug_jobp = -1;
 910         file_hash_init(hash);
 911         atexit(free_shm);
 912         return 0;
 913 }
 914
 915 static void usage(const char *name)
 916 {
 917         printf("%s\n", fio_version_string);
 918         printf("%s [options] [job options] <job file(s)>\n", name);
 919         printf("\t--debug=options\tEnable debug logging\n");
 920         printf("\t--output\tWrite output to file\n");
 921         printf("\t--timeout\tRuntime in seconds\n");
 922         printf("\t--latency-log\tGenerate per-job latency logs\n");
 923         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
 924         printf("\t--minimal\tMinimal (terse) output\n");
 925         printf("\t--version\tPrint version info and exit\n");
 926         printf("\t--help\t\tPrint this page\n");
 927         printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
 928                 " them\n");
 929         printf("\t--showcmd\tTurn a job file into command line options\n");
 930         printf("\t--eta=when\tWhen ETA estimate should be printed\n");
 931         printf("\t          \tMay be \"always\", \"never\" or \"auto\"\n");
 932         printf("\t--readonly\tTurn on safety read-only checks, preventing"
 933                 " writes\n");
 934         printf("\t--section=name\tOnly run specified section in job file\n");
 935         printf("\t--alloc-size=kb\tSet smalloc pool to this size in kb"
 936                 " (def 1024)\n");
 937         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>\n");
 938 }
 939
 940 #ifdef FIO_INC_DEBUG
 941 struct debug_level debug_levels[] = {
 942         { .name = "process",    .shift = FD_PROCESS, },
 943         { .name = "file",       .shift = FD_FILE, },
 944         { .name = "io",         .shift = FD_IO, },
 945         { .name = "mem",        .shift = FD_MEM, },
 946         { .name = "blktrace",   .shift = FD_BLKTRACE },
 947         { .name = "verify",     .shift = FD_VERIFY },
 948         { .name = "random",     .shift = FD_RANDOM },
 949         { .name = "parse",      .shift = FD_PARSE },
 950         { .name = "diskutil",   .shift = FD_DISKUTIL },
 951         { .name = "job",        .shift = FD_JOB },
 952         { .name = "mutex",      .shift = FD_MUTEX },
 953         { .name = NULL, },
 954 };
 955
 956 static int set_debug(const char *string)
 957 {
 958         struct debug_level *dl;
 959         char *p = (char *) string;
 960         char *opt;
 961         int i;
 962
 963         if (!strcmp(string, "?") || !strcmp(string, "help")) {
 964                 int i;
 965
 966                 log_info("fio: dumping debug options:");
 967                 for (i = 0; debug_levels[i].name; i++) {
 968                         dl = &debug_levels[i];
 969                         log_info("%s,", dl->name);
 970                 }
 971                 log_info("all\n");
 972                 return 1;
 973         }
 974
 975         while ((opt = strsep(&p, ",")) != NULL) {
 976                 int found = 0;
 977
 978                 if (!strncmp(opt, "all", 3)) {
 979                         log_info("fio: set all debug options\n");
 980                         fio_debug = ~0UL;
 981                         continue;
 982                 }
 983
 984                 for (i = 0; debug_levels[i].name; i++) {
 985                         dl = &debug_levels[i];
 986                         found = !strncmp(opt, dl->name, strlen(dl->name));
 987                         if (!found)
 988                                 continue;
 989
 990                         if (dl->shift == FD_JOB) {
 991                                 opt = strchr(opt, ':');
 992                                 if (!opt) {
 993                                         log_err("fio: missing job number\n");
 994                                         break;
 995                                 }
 996                                 opt++;
 997                                 fio_debug_jobno = atoi(opt);
 998                                 log_info("fio: set debug jobno %d\n",
 999                                                         fio_debug_jobno);
1000                         } else {
1001                                 log_info("fio: set debug option %s\n", opt);
1002                                 fio_debug |= (1UL << dl->shift);
1003                         }
1004                         break;
1005                 }
1006
1007                 if (!found)
1008                         log_err("fio: debug mask %s not found\n", opt);
1009         }
1010         return 0;
1011 }
1012 #else
1013 static int set_debug(const char *string)
1014 {
1015         log_err("fio: debug tracing not included in build\n");
1016         return 1;
1017 }
1018 #endif
1019
1020 static int load_profile(const char *profile)
1021 {
1022         struct thread_data *td, *td_parent;
1023         const char **o;
1024         int i, in_global = 1;
1025         char jobname[32];
1026
1027         dprint(FD_PARSE, "loading profile %s\n", profile);
1028
1029         for (i = 0; i < PROFILE_END; i++) {
1030                 if (!strcmp(profile, profiles[i]))
1031                         break;
1032         }
1033
1034         if (i == PROFILE_END) {
1035                 log_err("fio: unknown profile %s\n", profile);
1036                 return 1;
1037         }
1038
1039         o = fio_prof_strings[i];
1040         if (!o)
1041                 return 0;
1042
1043         i = 0;
1044         td_parent = td = NULL;
1045         while (o[i]) {
1046                 if (!strncmp(o[i], "name", 4)) {
1047                         in_global = 0;
1048                         if (td)
1049                                 add_job(td, jobname, 0);
1050                         td = NULL;
1051                         sprintf(jobname, "%s", o[i] + 5);
1052                 }
1053                 if (in_global && !td_parent)
1054                         td_parent = get_new_job(1, &def_thread);
1055                 else if (!in_global && !td) {
1056                         if (!td_parent)
1057                                 td_parent = &def_thread;
1058                         td = get_new_job(0, td_parent);
1059                 }
1060                 if (in_global)
1061                         fio_options_parse(td_parent, (char **) &o[i], 1);
1062                 else
1063                         fio_options_parse(td, (char **) &o[i], 1);
1064                 i++;
1065         }
1066         if (td)
1067                 add_job(td, jobname, 0);
1068         return 0;
1069 }
1070
1071 static int parse_cmd_line(int argc, char *argv[])
1072 {
1073         struct thread_data *td = NULL;
1074         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1075
1076         while ((c = getopt_long_only(argc, argv, "", l_opts, &lidx)) != -1) {
1077                 switch (c) {
1078                 case 'a':
1079                         smalloc_pool_size = atoi(optarg);
1080                         break;
1081                 case 't':
1082                         def_timeout = atoi(optarg);
1083                         break;
1084                 case 'l':
1085                         write_lat_log = 1;
1086                         break;
1087                 case 'w':
1088                         write_bw_log = 1;
1089                         break;
1090                 case 'o':
1091                         f_out = fopen(optarg, "w+");
1092                         if (!f_out) {
1093                                 perror("fopen output");
1094                                 exit(1);
1095                         }
1096                         f_err = f_out;
1097                         break;
1098                 case 'm':
1099                         terse_output = 1;
1100                         break;
1101                 case 'h':
1102                         usage(argv[0]);
1103                         exit(0);
1104                 case 'c':
1105                         exit(fio_show_option_help(optarg));
1106                 case 's':
1107                         dump_cmdline = 1;
1108                         break;
1109                 case 'r':
1110                         read_only = 1;
1111                         break;
1112                 case 'v':
1113                         printf("%s\n", fio_version_string);
1114                         exit(0);
1115                 case 'e':
1116                         if (!strcmp("always", optarg))
1117                                 eta_print = FIO_ETA_ALWAYS;
1118                         else if (!strcmp("never", optarg))
1119                                 eta_print = FIO_ETA_NEVER;
1120                         break;
1121                 case 'd':
1122                         if (set_debug(optarg))
1123                                 do_exit++;
1124                         break;
1125                 case 'x':
1126                         if (!strcmp(optarg, "global")) {
1127                                 log_err("fio: can't use global as only "
1128                                         "section\n");
1129                                 do_exit++;
1130                                 exit_val = 1;
1131                                 break;
1132                         }
1133                         if (job_section)
1134                                 free(job_section);
1135                         job_section = strdup(optarg);
1136                         break;
1137                 case 'p':
1138                         if (load_profile(optarg))
1139                                 do_exit++;
1140                         break;
1141                 case FIO_GETOPT_JOB: {
1142                         const char *opt = l_opts[lidx].name;
1143                         char *val = optarg;
1144
1145                         if (!strncmp(opt, "name", 4) && td) {
1146                                 ret = add_job(td, td->o.name ?: "fio", 0);
1147                                 if (ret) {
1148                                         put_job(td);
1149                                         return 0;
1150                                 }
1151                                 td = NULL;
1152                         }
1153                         if (!td) {
1154                                 int is_section = !strncmp(opt, "name", 4);
1155                                 int global = 0;
1156
1157                                 if (!is_section || !strncmp(val, "global", 6))
1158                                         global = 1;
1159
1160                                 if (is_section && skip_this_section(val))
1161                                         continue;
1162
1163                                 td = get_new_job(global, &def_thread);
1164                                 if (!td)
1165                                         return 0;
1166                         }
1167
1168                         ret = fio_cmd_option_parse(td, opt, val);
1169                         break;
1170                 }
1171                 default:
1172                         do_exit++;
1173                         exit_val = 1;
1174                         break;
1175                 }
1176         }
1177
1178         if (do_exit)
1179                 exit(exit_val);
1180
1181         if (td) {
1182                 if (!ret)
1183                         ret = add_job(td, td->o.name ?: "fio", 0);
1184                 if (ret)
1185                         put_job(td);
1186         }
1187
1188         while (optind < argc) {
1189                 ini_idx++;
1190                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1191                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1192                 optind++;
1193         }
1194
1195         return ini_idx;
1196 }
1197
1198 int parse_options(int argc, char *argv[])
1199 {
1200         int job_files, i;
1201
1202         f_out = stdout;
1203         f_err = stderr;
1204
1205         fio_options_dup_and_init(l_opts);
1206
1207         if (setup_thread_area())
1208                 return 1;
1209         if (fill_def_thread())
1210                 return 1;
1211
1212         job_files = parse_cmd_line(argc, argv);
1213
1214         for (i = 0; i < job_files; i++) {
1215                 if (fill_def_thread())
1216                         return 1;
1217                 if (parse_jobs_ini(ini_file[i], i))
1218                         return 1;
1219                 free(ini_file[i]);
1220         }
1221
1222         free(ini_file);
1223         options_mem_free(&def_thread);
1224
1225         if (!thread_number) {
1226                 if (dump_cmdline)
1227                         return 0;
1228
1229                 log_err("No jobs defined(s)\n\n");
1230                 usage(argv[0]);
1231                 return 1;
1232         }
1233
1234         if (def_thread.o.gtod_offload) {
1235                 fio_gtod_init();
1236                 fio_gtod_offload = 1;
1237                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1238         }
1239
1240         return 0;
1241 }