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 <sys/ipc.h>
  12 #include <sys/shm.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15
  16 #include "fio.h"
  17 #include "parse.h"
  18 #include "smalloc.h"
  19 #include "filehash.h"
  20 #include "verify.h"
  21 #include "profile.h"
  22 #include "server.h"
  23
  24 #include "lib/getopt.h"
  25
  26 const char fio_version_string[] = FIO_VERSION;
  27
  28 #define FIO_RANDSEED            (0xb1899bedUL)
  29
  30 static char **ini_file;
  31 static int max_jobs = FIO_MAX_JOBS;
  32 static int dump_cmdline;
  33 static int def_timeout;
  34
  35 static struct thread_data def_thread;
  36 struct thread_data *threads = NULL;
  37
  38 int exitall_on_terminate = 0;
  39 int output_format = FIO_OUTPUT_NORMAL;
  40 int eta_print;
  41 unsigned long long mlock_size = 0;
  42 FILE *f_out = NULL;
  43 FILE *f_err = NULL;
  44 char **job_sections = NULL;
  45 int nr_job_sections = 0;
  46 char *exec_profile = NULL;
  47 int warnings_fatal = 0;
  48 int terse_version = 3;
  49 int is_backend = 0;
  50 int nr_clients = 0;
  51 int log_syslog = 0;
  52
  53 int write_bw_log = 0;
  54 int read_only = 0;
  55
  56 static int write_lat_log;
  57
  58 static int prev_group_jobs;
  59
  60 unsigned long fio_debug = 0;
  61 unsigned int fio_debug_jobno = -1;
  62 unsigned int *fio_debug_jobp = NULL;
  63
  64 static char cmd_optstr[256];
  65 static int did_arg;
  66
  67 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
  68         { .u.f  =  1.00 },
  69         { .u.f  =  5.00 },
  70         { .u.f  = 10.00 },
  71         { .u.f  = 20.00 },
  72         { .u.f  = 30.00 },
  73         { .u.f  = 40.00 },
  74         { .u.f  = 50.00 },
  75         { .u.f  = 60.00 },
  76         { .u.f  = 70.00 },
  77         { .u.f  = 80.00 },
  78         { .u.f  = 90.00 },
  79         { .u.f  = 95.00 },
  80         { .u.f  = 99.00 },
  81         { .u.f  = 99.50 },
  82         { .u.f  = 99.90 },
  83         { .u.f  = 99.95 },
  84         { .u.f  = 99.99 },
  85 };
  86
  87 #define FIO_CLIENT_FLAG         (1 << 16)
  88
  89 /*
  90  * Command line options. These will contain the above, plus a few
  91  * extra that only pertain to fio itself and not jobs.
  92  */
  93 static struct option l_opts[FIO_NR_OPTIONS] = {
  94         {
  95                 .name           = (char *) "output",
  96                 .has_arg        = required_argument,
  97                 .val            = 'o' | FIO_CLIENT_FLAG,
  98         },
  99         {
 100                 .name           = (char *) "timeout",
 101                 .has_arg        = required_argument,
 102                 .val            = 't' | FIO_CLIENT_FLAG,
 103         },
 104         {
 105                 .name           = (char *) "latency-log",
 106                 .has_arg        = required_argument,
 107                 .val            = 'l' | FIO_CLIENT_FLAG,
 108         },
 109         {
 110                 .name           = (char *) "bandwidth-log",
 111                 .has_arg        = required_argument,
 112                 .val            = 'b' | FIO_CLIENT_FLAG,
 113         },
 114         {
 115                 .name           = (char *) "minimal",
 116                 .has_arg        = optional_argument,
 117                 .val            = 'm' | FIO_CLIENT_FLAG,
 118         },
 119         {
 120                 .name           = (char *) "output-format",
 121                 .has_arg        = optional_argument,
 122                 .val            = 'F' | FIO_CLIENT_FLAG,
 123         },
 124         {
 125                 .name           = (char *) "version",
 126                 .has_arg        = no_argument,
 127                 .val            = 'v' | FIO_CLIENT_FLAG,
 128         },
 129         {
 130                 .name           = (char *) "help",
 131                 .has_arg        = no_argument,
 132                 .val            = 'h' | FIO_CLIENT_FLAG,
 133         },
 134         {
 135                 .name           = (char *) "cmdhelp",
 136                 .has_arg        = optional_argument,
 137                 .val            = 'c' | FIO_CLIENT_FLAG,
 138         },
 139         {
 140                 .name              = (char *) "enghelp",
 141                 .has_arg        = optional_argument,
 142                 .val                = 'i' | FIO_CLIENT_FLAG,
 143         },
 144         {
 145                 .name           = (char *) "showcmd",
 146                 .has_arg        = no_argument,
 147                 .val            = 's' | FIO_CLIENT_FLAG,
 148         },
 149         {
 150                 .name           = (char *) "readonly",
 151                 .has_arg        = no_argument,
 152                 .val            = 'r' | FIO_CLIENT_FLAG,
 153         },
 154         {
 155                 .name           = (char *) "eta",
 156                 .has_arg        = required_argument,
 157                 .val            = 'e' | FIO_CLIENT_FLAG,
 158         },
 159         {
 160                 .name           = (char *) "debug",
 161                 .has_arg        = required_argument,
 162                 .val            = 'd' | FIO_CLIENT_FLAG,
 163         },
 164         {
 165                 .name           = (char *) "section",
 166                 .has_arg        = required_argument,
 167                 .val            = 'x' | FIO_CLIENT_FLAG,
 168         },
 169         {
 170                 .name           = (char *) "alloc-size",
 171                 .has_arg        = required_argument,
 172                 .val            = 'a' | FIO_CLIENT_FLAG,
 173         },
 174         {
 175                 .name           = (char *) "profile",
 176                 .has_arg        = required_argument,
 177                 .val            = 'p' | FIO_CLIENT_FLAG,
 178         },
 179         {
 180                 .name           = (char *) "warnings-fatal",
 181                 .has_arg        = no_argument,
 182                 .val            = 'w' | FIO_CLIENT_FLAG,
 183         },
 184         {
 185                 .name           = (char *) "max-jobs",
 186                 .has_arg        = required_argument,
 187                 .val            = 'j' | FIO_CLIENT_FLAG,
 188         },
 189         {
 190                 .name           = (char *) "terse-version",
 191                 .has_arg        = required_argument,
 192                 .val            = 'V' | FIO_CLIENT_FLAG,
 193         },
 194         {
 195                 .name           = (char *) "server",
 196                 .has_arg        = optional_argument,
 197                 .val            = 'S',
 198         },
 199         {       .name           = (char *) "daemonize",
 200                 .has_arg        = required_argument,
 201                 .val            = 'D',
 202         },
 203         {
 204                 .name           = (char *) "client",
 205                 .has_arg        = required_argument,
 206                 .val            = 'C',
 207         },
 208         {
 209                 .name           = NULL,
 210         },
 211 };
 212
 213 static void free_shm(void)
 214 {
 215         struct shmid_ds sbuf;
 216
 217         if (threads) {
 218                 void *tp = threads;
 219
 220                 threads = NULL;
 221                 file_hash_exit();
 222                 flow_exit();
 223                 fio_debug_jobp = NULL;
 224                 shmdt(tp);
 225                 shmctl(shm_id, IPC_RMID, &sbuf);
 226         }
 227
 228         scleanup();
 229 }
 230
 231 /*
 232  * The thread area is shared between the main process and the job
 233  * threads/processes. So setup a shared memory segment that will hold
 234  * all the job info. We use the end of the region for keeping track of
 235  * open files across jobs, for file sharing.
 236  */
 237 static int setup_thread_area(void)
 238 {
 239         void *hash;
 240
 241         if (threads)
 242                 return 0;
 243
 244         /*
 245          * 1024 is too much on some machines, scale max_jobs if
 246          * we get a failure that looks like too large a shm segment
 247          */
 248         do {
 249                 size_t size = max_jobs * sizeof(struct thread_data);
 250
 251                 size += file_hash_size;
 252                 size += sizeof(unsigned int);
 253
 254                 shm_id = shmget(0, size, IPC_CREAT | 0600);
 255                 if (shm_id != -1)
 256                         break;
 257                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
 258                         perror("shmget");
 259                         break;
 260                 }
 261
 262                 max_jobs >>= 1;
 263         } while (max_jobs);
 264
 265         if (shm_id == -1)
 266                 return 1;
 267
 268         threads = shmat(shm_id, NULL, 0);
 269         if (threads == (void *) -1) {
 270                 perror("shmat");
 271                 return 1;
 272         }
 273
 274         memset(threads, 0, max_jobs * sizeof(struct thread_data));
 275         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
 276         fio_debug_jobp = (void *) hash + file_hash_size;
 277         *fio_debug_jobp = -1;
 278         file_hash_init(hash);
 279
 280         flow_init();
 281
 282         return 0;
 283 }
 284
 285 /*
 286  * Return a free job structure.
 287  */
 288 static struct thread_data *get_new_job(int global, struct thread_data *parent,
 289                                        int preserve_eo)
 290 {
 291         struct thread_data *td;
 292
 293         if (global)
 294                 return &def_thread;
 295         if (setup_thread_area()) {
 296                 log_err("error: failed to setup shm segment\n");
 297                 return NULL;
 298         }
 299         if (thread_number >= max_jobs) {
 300                 log_err("error: maximum number of jobs (%d) reached.\n",
 301                                 max_jobs);
 302                 return NULL;
 303         }
 304
 305         td = &threads[thread_number++];
 306         *td = *parent;
 307
 308         td->io_ops = NULL;
 309         if (!preserve_eo)
 310                 td->eo = NULL;
 311
 312         td->o.uid = td->o.gid = -1U;
 313
 314         dup_files(td, parent);
 315         fio_options_mem_dupe(td);
 316
 317         profile_add_hooks(td);
 318
 319         td->thread_number = thread_number;
 320
 321         if (!parent || !parent->o.group_reporting)
 322                 stat_number++;
 323
 324         return td;
 325 }
 326
 327 static void put_job(struct thread_data *td)
 328 {
 329         if (td == &def_thread)
 330                 return;
 331
 332         profile_td_exit(td);
 333         flow_exit_job(td);
 334
 335         if (td->error)
 336                 log_info("fio: %s\n", td->verror);
 337
 338         fio_options_free(td);
 339         if (td->io_ops)
 340                 free_ioengine(td);
 341
 342         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 343         thread_number--;
 344 }
 345
 346 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
 347 {
 348         unsigned int bs = td->o.min_bs[ddir];
 349
 350         assert(ddir_rw(ddir));
 351
 352         if (td->o.rate[ddir])
 353                 td->rate_bps[ddir] = td->o.rate[ddir];
 354         else
 355                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
 356
 357         if (!td->rate_bps[ddir]) {
 358                 log_err("rate lower than supported\n");
 359                 return -1;
 360         }
 361
 362         td->rate_pending_usleep[ddir] = 0;
 363         return 0;
 364 }
 365
 366 static int setup_rate(struct thread_data *td)
 367 {
 368         int ret = 0;
 369
 370         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
 371                 ret = __setup_rate(td, DDIR_READ);
 372         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
 373                 ret |= __setup_rate(td, DDIR_WRITE);
 374         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
 375                 ret |= __setup_rate(td, DDIR_TRIM);
 376
 377         return ret;
 378 }
 379
 380 static int fixed_block_size(struct thread_options *o)
 381 {
 382         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
 383                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
 384                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
 385                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
 386                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
 387 }
 388
 389 /*
 390  * Lazy way of fixing up options that depend on each other. We could also
 391  * define option callback handlers, but this is easier.
 392  */
 393 static int fixup_options(struct thread_data *td)
 394 {
 395         struct thread_options *o = &td->o;
 396         int ret = 0;
 397
 398 #ifndef FIO_HAVE_PSHARED_MUTEX
 399         if (!o->use_thread) {
 400                 log_info("fio: this platform does not support process shared"
 401                          " mutexes, forcing use of threads. Use the 'thread'"
 402                          " option to get rid of this warning.\n");
 403                 o->use_thread = 1;
 404                 ret = warnings_fatal;
 405         }
 406 #endif
 407
 408         if (o->write_iolog_file && o->read_iolog_file) {
 409                 log_err("fio: read iolog overrides write_iolog\n");
 410                 free(o->write_iolog_file);
 411                 o->write_iolog_file = NULL;
 412                 ret = warnings_fatal;
 413         }
 414
 415         /*
 416          * only really works with 1 file
 417          */
 418         if (o->zone_size && o->open_files == 1)
 419                 o->zone_size = 0;
 420
 421         /*
 422          * If zone_range isn't specified, backward compatibility dictates it
 423          * should be made equal to zone_size.
 424          */
 425         if (o->zone_size && !o->zone_range)
 426                 o->zone_range = o->zone_size;
 427
 428         /*
 429          * Reads can do overwrites, we always need to pre-create the file
 430          */
 431         if (td_read(td) || td_rw(td))
 432                 o->overwrite = 1;
 433
 434         if (!o->min_bs[DDIR_READ])
 435                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
 436         if (!o->max_bs[DDIR_READ])
 437                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
 438         if (!o->min_bs[DDIR_WRITE])
 439                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 440         if (!o->max_bs[DDIR_WRITE])
 441                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 442         if (!o->min_bs[DDIR_TRIM])
 443                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 444         if (!o->max_bs[DDIR_TRIM])
 445                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
 446
 447
 448         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 449         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
 450
 451         /*
 452          * For random IO, allow blockalign offset other than min_bs.
 453          */
 454         if (!o->ba[DDIR_READ] || !td_random(td))
 455                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
 456         if (!o->ba[DDIR_WRITE] || !td_random(td))
 457                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
 458         if (!o->ba[DDIR_TRIM] || !td_random(td))
 459                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
 460
 461         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
 462             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
 463             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
 464             !o->norandommap) {
 465                 log_err("fio: Any use of blockalign= turns off randommap\n");
 466                 o->norandommap = 1;
 467                 ret = warnings_fatal;
 468         }
 469
 470         if (!o->file_size_high)
 471                 o->file_size_high = o->file_size_low;
 472
 473         if (o->norandommap && o->verify != VERIFY_NONE
 474             && !fixed_block_size(o))  {
 475                 log_err("fio: norandommap given for variable block sizes, "
 476                         "verify disabled\n");
 477                 o->verify = VERIFY_NONE;
 478                 ret = warnings_fatal;
 479         }
 480         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
 481                 log_err("fio: bs_unaligned may not work with raw io\n");
 482
 483         /*
 484          * thinktime_spin must be less than thinktime
 485          */
 486         if (o->thinktime_spin > o->thinktime)
 487                 o->thinktime_spin = o->thinktime;
 488
 489         /*
 490          * The low water mark cannot be bigger than the iodepth
 491          */
 492         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
 493                 /*
 494                  * syslet work around - if the workload is sequential,
 495                  * we want to let the queue drain all the way down to
 496                  * avoid seeking between async threads
 497                  */
 498                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
 499                         o->iodepth_low = 1;
 500                 else
 501                         o->iodepth_low = o->iodepth;
 502         }
 503
 504         /*
 505          * If batch number isn't set, default to the same as iodepth
 506          */
 507         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
 508                 o->iodepth_batch = o->iodepth;
 509
 510         if (o->nr_files > td->files_index)
 511                 o->nr_files = td->files_index;
 512
 513         if (o->open_files > o->nr_files || !o->open_files)
 514                 o->open_files = o->nr_files;
 515
 516         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
 517             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
 518             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
 519             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
 520                 log_err("fio: rate and rate_iops are mutually exclusive\n");
 521                 ret = 1;
 522         }
 523         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
 524             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
 525             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
 526             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
 527             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
 528             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
 529                 log_err("fio: minimum rate exceeds rate\n");
 530                 ret = 1;
 531         }
 532
 533         if (!o->timeout && o->time_based) {
 534                 log_err("fio: time_based requires a runtime/timeout setting\n");
 535                 o->time_based = 0;
 536                 ret = warnings_fatal;
 537         }
 538
 539         if (o->fill_device && !o->size)
 540                 o->size = -1ULL;
 541
 542         if (o->verify != VERIFY_NONE) {
 543                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
 544                         log_info("Multiple writers may overwrite blocks that "
 545                                 "belong to other jobs. This can cause "
 546                                 "verification failures.\n");
 547                         ret = warnings_fatal;
 548                 }
 549
 550                 o->refill_buffers = 1;
 551                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
 552                     !o->verify_interval)
 553                         o->verify_interval = o->min_bs[DDIR_WRITE];
 554         }
 555
 556         if (o->pre_read) {
 557                 o->invalidate_cache = 0;
 558                 if (td->io_ops->flags & FIO_PIPEIO) {
 559                         log_info("fio: cannot pre-read files with an IO engine"
 560                                  " that isn't seekable. Pre-read disabled.\n");
 561                         ret = warnings_fatal;
 562                 }
 563         }
 564
 565 #ifndef FIO_HAVE_FDATASYNC
 566         if (o->fdatasync_blocks) {
 567                 log_info("fio: this platform does not support fdatasync()"
 568                          " falling back to using fsync().  Use the 'fsync'"
 569                          " option instead of 'fdatasync' to get rid of"
 570                          " this warning\n");
 571                 o->fsync_blocks = o->fdatasync_blocks;
 572                 o->fdatasync_blocks = 0;
 573                 ret = warnings_fatal;
 574         }
 575 #endif
 576
 577 #ifdef WIN32
 578         /*
 579          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
 580          * so fail if we're passed those flags
 581          */
 582         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
 583                 log_err("fio: Windows does not support direct or non-buffered io with"
 584                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
 585                                 " with 'direct=1' and 'iodepth=1' instead.\n");
 586                 ret = 1;
 587         }
 588 #endif
 589
 590         /*
 591          * For fully compressible data, just zero them at init time.
 592          * It's faster than repeatedly filling it.
 593          */
 594         if (td->o.compress_percentage == 100) {
 595                 td->o.zero_buffers = 1;
 596                 td->o.compress_percentage = 0;
 597         }
 598
 599         /*
 600          * Using a non-uniform random distribution excludes usage of
 601          * a random map
 602          */
 603         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
 604                 td->o.norandommap = 1;
 605
 606         return ret;
 607 }
 608
 609 /*
 610  * This function leaks the buffer
 611  */
 612 static char *to_kmg(unsigned int val)
 613 {
 614         char *buf = malloc(32);
 615         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
 616         char *p = post;
 617
 618         do {
 619                 if (val & 1023)
 620                         break;
 621
 622                 val >>= 10;
 623                 p++;
 624         } while (*p);
 625
 626         snprintf(buf, 31, "%u%c", val, *p);
 627         return buf;
 628 }
 629
 630 /* External engines are specified by "external:name.o") */
 631 static const char *get_engine_name(const char *str)
 632 {
 633         char *p = strstr(str, ":");
 634
 635         if (!p)
 636                 return str;
 637
 638         p++;
 639         strip_blank_front(&p);
 640         strip_blank_end(p);
 641         return p;
 642 }
 643
 644 static int exists_and_not_file(const char *filename)
 645 {
 646         struct stat sb;
 647
 648         if (lstat(filename, &sb) == -1)
 649                 return 0;
 650
 651         /* \\.\ is the device namespace in Windows, where every file
 652          * is a device node */
 653         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
 654                 return 0;
 655
 656         return 1;
 657 }
 658
 659 static void td_fill_rand_seeds_os(struct thread_data *td)
 660 {
 661         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
 662         os_random_seed(td->rand_seeds[1], &td->verify_state);
 663         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
 664
 665         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 666                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
 667
 668         os_random_seed(td->rand_seeds[5], &td->file_size_state);
 669         os_random_seed(td->rand_seeds[6], &td->trim_state);
 670
 671         if (!td_random(td))
 672                 return;
 673
 674         if (td->o.rand_repeatable)
 675                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 676
 677         os_random_seed(td->rand_seeds[4], &td->random_state);
 678 }
 679
 680 static void td_fill_rand_seeds_internal(struct thread_data *td)
 681 {
 682         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
 683         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
 684         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
 685
 686         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
 687                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
 688
 689         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
 690         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
 691
 692         if (!td_random(td))
 693                 return;
 694
 695         if (td->o.rand_repeatable)
 696                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
 697
 698         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
 699 }
 700
 701 void td_fill_rand_seeds(struct thread_data *td)
 702 {
 703         if (td->o.use_os_rand)
 704                 td_fill_rand_seeds_os(td);
 705         else
 706                 td_fill_rand_seeds_internal(td);
 707
 708         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 709 }
 710
 711
 712 /*
 713  * Initializes the ioengine configured for a job, if it has not been done so
 714  * already.
 715  */
 716 int ioengine_load(struct thread_data *td)
 717 {
 718         const char *engine;
 719
 720         /*
 721          * Engine has already been loaded.
 722          */
 723         if (td->io_ops)
 724                 return 0;
 725
 726         engine = get_engine_name(td->o.ioengine);
 727         td->io_ops = load_ioengine(td, engine);
 728         if (!td->io_ops) {
 729                 log_err("fio: failed to load engine %s\n", engine);
 730                 return 1;
 731         }
 732
 733         if (td->io_ops->option_struct_size && td->io_ops->options) {
 734                 /*
 735                  * In cases where td->eo is set, clone it for a child thread.
 736                  * This requires that the parent thread has the same ioengine,
 737                  * but that requirement must be enforced by the code which
 738                  * cloned the thread.
 739                  */
 740                 void *origeo = td->eo;
 741                 /*
 742                  * Otherwise use the default thread options.
 743                  */
 744                 if (!origeo && td != &def_thread && def_thread.eo &&
 745                     def_thread.io_ops->options == td->io_ops->options)
 746                         origeo = def_thread.eo;
 747
 748                 options_init(td->io_ops->options);
 749                 td->eo = malloc(td->io_ops->option_struct_size);
 750                 /*
 751                  * Use the default thread as an option template if this uses the
 752                  * same options structure and there are non-default options
 753                  * used.
 754                  */
 755                 if (origeo) {
 756                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
 757                         options_mem_dupe(td->eo, td->io_ops->options);
 758                 } else {
 759                         memset(td->eo, 0, td->io_ops->option_struct_size);
 760                         fill_default_options(td->eo, td->io_ops->options);
 761                 }
 762                 *(struct thread_data **)td->eo = td;
 763         }
 764
 765         return 0;
 766 }
 767
 768 /*
 769  * Adds a job to the list of things todo. Sanitizes the various options
 770  * to make sure we don't have conflicts, and initializes various
 771  * members of td.
 772  */
 773 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 774 {
 775         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
 776                                    "randread", "randwrite", "randrw",
 777                                    "trim", NULL, NULL, NULL, "randtrim" };
 778         unsigned int i;
 779         char fname[PATH_MAX];
 780         int numjobs, file_alloced;
 781
 782         /*
 783          * the def_thread is just for options, it's not a real job
 784          */
 785         if (td == &def_thread)
 786                 return 0;
 787
 788         /*
 789          * if we are just dumping the output command line, don't add the job
 790          */
 791         if (dump_cmdline) {
 792                 put_job(td);
 793                 return 0;
 794         }
 795
 796         if (profile_td_init(td))
 797                 goto err;
 798
 799         if (ioengine_load(td))
 800                 goto err;
 801
 802         if (td->o.use_thread)
 803                 nr_thread++;
 804         else
 805                 nr_process++;
 806
 807         if (td->o.odirect)
 808                 td->io_ops->flags |= FIO_RAWIO;
 809
 810         file_alloced = 0;
 811         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
 812                 file_alloced = 1;
 813
 814                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
 815                         add_file(td, jobname);
 816                 else {
 817                         for (i = 0; i < td->o.nr_files; i++) {
 818                                 sprintf(fname, "%s.%d.%d", jobname,
 819                                                         td->thread_number, i);
 820                                 add_file(td, fname);
 821                         }
 822                 }
 823         }
 824
 825         if (fixup_options(td))
 826                 goto err;
 827
 828         flow_init_job(td);
 829
 830         /*
 831          * IO engines only need this for option callbacks, and the address may
 832          * change in subprocesses.
 833          */
 834         if (td->eo)
 835                 *(struct thread_data **)td->eo = NULL;
 836
 837         if (td->io_ops->flags & FIO_DISKLESSIO) {
 838                 struct fio_file *f;
 839
 840                 for_each_file(td, f, i)
 841                         f->real_file_size = -1ULL;
 842         }
 843
 844         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
 845
 846         td->ts.clat_percentiles = td->o.clat_percentiles;
 847         if (td->o.overwrite_plist)
 848                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 849         else
 850                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
 851
 852         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 853                 td->ts.clat_stat[i].min_val = ULONG_MAX;
 854                 td->ts.slat_stat[i].min_val = ULONG_MAX;
 855                 td->ts.lat_stat[i].min_val = ULONG_MAX;
 856                 td->ts.bw_stat[i].min_val = ULONG_MAX;
 857         }
 858         td->ddir_seq_nr = td->o.ddir_seq_nr;
 859
 860         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
 861                 prev_group_jobs = 0;
 862                 groupid++;
 863         }
 864
 865         td->groupid = groupid;
 866         prev_group_jobs++;
 867
 868         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
 869                 td_verror(td, errno, "init_random_state");
 870                 goto err;
 871         }
 872
 873         if (setup_rate(td))
 874                 goto err;
 875
 876         if (td->o.write_lat_log) {
 877                 setup_log(&td->lat_log, td->o.log_avg_msec);
 878                 setup_log(&td->slat_log, td->o.log_avg_msec);
 879                 setup_log(&td->clat_log, td->o.log_avg_msec);
 880         }
 881         if (td->o.write_bw_log)
 882                 setup_log(&td->bw_log, td->o.log_avg_msec);
 883         if (td->o.write_iops_log)
 884                 setup_log(&td->iops_log, td->o.log_avg_msec);
 885
 886         if (!td->o.name)
 887                 td->o.name = strdup(jobname);
 888
 889         if (output_format == FIO_OUTPUT_NORMAL) {
 890                 if (!job_add_num) {
 891                         if (!strcmp(td->io_ops->name, "cpuio")) {
 892                                 log_info("%s: ioengine=cpu, cpuload=%u,"
 893                                          " cpucycle=%u\n", td->o.name,
 894                                                         td->o.cpuload,
 895                                                         td->o.cpucycle);
 896                         } else {
 897                                 char *c1, *c2, *c3, *c4, *c5, *c6;
 898
 899                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
 900                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
 901                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
 902                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 903                                 c5 = to_kmg(td->o.min_bs[DDIR_TRIM]);
 904                                 c6 = to_kmg(td->o.max_bs[DDIR_TRIM]);
 905
 906                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
 907                                          " ioengine=%s, iodepth=%u\n",
 908                                                 td->o.name, td->groupid,
 909                                                 ddir_str[td->o.td_ddir],
 910                                                 c1, c2, c3, c4, c5, c6,
 911                                                 td->io_ops->name,
 912                                                 td->o.iodepth);
 913
 914                                 free(c1);
 915                                 free(c2);
 916                                 free(c3);
 917                                 free(c4);
 918                                 free(c5);
 919                                 free(c6);
 920                         }
 921                 } else if (job_add_num == 1)
 922                         log_info("...\n");
 923         }
 924
 925         /*
 926          * recurse add identical jobs, clear numjobs and stonewall options
 927          * as they don't apply to sub-jobs
 928          */
 929         numjobs = td->o.numjobs;
 930         while (--numjobs) {
 931                 struct thread_data *td_new = get_new_job(0, td, 1);
 932
 933                 if (!td_new)
 934                         goto err;
 935
 936                 td_new->o.numjobs = 1;
 937                 td_new->o.stonewall = 0;
 938                 td_new->o.new_group = 0;
 939
 940                 if (file_alloced) {
 941                         td_new->o.filename = NULL;
 942                         td_new->files_index = 0;
 943                         td_new->files_size = 0;
 944                         td_new->files = NULL;
 945                 }
 946
 947                 job_add_num = numjobs - 1;
 948
 949                 if (add_job(td_new, jobname, job_add_num))
 950                         goto err;
 951         }
 952
 953         return 0;
 954 err:
 955         put_job(td);
 956         return -1;
 957 }
 958
 959 /*
 960  * Parse as if 'o' was a command line
 961  */
 962 void add_job_opts(const char **o)
 963 {
 964         struct thread_data *td, *td_parent;
 965         int i, in_global = 1;
 966         char jobname[32];
 967
 968         i = 0;
 969         td_parent = td = NULL;
 970         while (o[i]) {
 971                 if (!strncmp(o[i], "name", 4)) {
 972                         in_global = 0;
 973                         if (td)
 974                                 add_job(td, jobname, 0);
 975                         td = NULL;
 976                         sprintf(jobname, "%s", o[i] + 5);
 977                 }
 978                 if (in_global && !td_parent)
 979                         td_parent = get_new_job(1, &def_thread, 0);
 980                 else if (!in_global && !td) {
 981                         if (!td_parent)
 982                                 td_parent = &def_thread;
 983                         td = get_new_job(0, td_parent, 0);
 984                 }
 985                 if (in_global)
 986                         fio_options_parse(td_parent, (char **) &o[i], 1);
 987                 else
 988                         fio_options_parse(td, (char **) &o[i], 1);
 989                 i++;
 990         }
 991
 992         if (td)
 993                 add_job(td, jobname, 0);
 994 }
 995
 996 static int skip_this_section(const char *name)
 997 {
 998         int i;
 999
1000         if (!nr_job_sections)
1001                 return 0;
1002         if (!strncmp(name, "global", 6))
1003                 return 0;
1004
1005         for (i = 0; i < nr_job_sections; i++)
1006                 if (!strcmp(job_sections[i], name))
1007                         return 0;
1008
1009         return 1;
1010 }
1011
1012 static int is_empty_or_comment(char *line)
1013 {
1014         unsigned int i;
1015
1016         for (i = 0; i < strlen(line); i++) {
1017                 if (line[i] == ';')
1018                         return 1;
1019                 if (line[i] == '#')
1020                         return 1;
1021                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1022                         return 0;
1023         }
1024
1025         return 1;
1026 }
1027
1028 /*
1029  * This is our [ini] type file parser.
1030  */
1031 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
1032 {
1033         unsigned int global;
1034         struct thread_data *td;
1035         char *string, *name;
1036         FILE *f;
1037         char *p;
1038         int ret = 0, stonewall;
1039         int first_sect = 1;
1040         int skip_fgets = 0;
1041         int inside_skip = 0;
1042         char **opts;
1043         int i, alloc_opts, num_opts;
1044
1045         if (is_buf)
1046                 f = NULL;
1047         else {
1048                 if (!strcmp(file, "-"))
1049                         f = stdin;
1050                 else
1051                         f = fopen(file, "r");
1052
1053                 if (!f) {
1054                         perror("fopen job file");
1055                         return 1;
1056                 }
1057         }
1058
1059         string = malloc(4096);
1060
1061         /*
1062          * it's really 256 + small bit, 280 should suffice
1063          */
1064         name = malloc(280);
1065         memset(name, 0, 280);
1066
1067         alloc_opts = 8;
1068         opts = malloc(sizeof(char *) * alloc_opts);
1069         num_opts = 0;
1070
1071         stonewall = stonewall_flag;
1072         do {
1073                 /*
1074                  * if skip_fgets is set, we already have loaded a line we
1075                  * haven't handled.
1076                  */
1077                 if (!skip_fgets) {
1078                         if (is_buf)
1079                                 p = strsep(&file, "\n");
1080                         else
1081                                 p = fgets(string, 4096, f);
1082                         if (!p)
1083                                 break;
1084                 }
1085
1086                 skip_fgets = 0;
1087                 strip_blank_front(&p);
1088                 strip_blank_end(p);
1089
1090                 if (is_empty_or_comment(p))
1091                         continue;
1092                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1093                         if (inside_skip)
1094                                 continue;
1095                         log_err("fio: option <%s> outside of [] job section\n",
1096                                                                         p);
1097                         break;
1098                 }
1099
1100                 name[strlen(name) - 1] = '\0';
1101
1102                 if (skip_this_section(name)) {
1103                         inside_skip = 1;
1104                         continue;
1105                 } else
1106                         inside_skip = 0;
1107
1108                 global = !strncmp(name, "global", 6);
1109
1110                 if (dump_cmdline) {
1111                         if (first_sect)
1112                                 log_info("fio ");
1113                         if (!global)
1114                                 log_info("--name=%s ", name);
1115                         first_sect = 0;
1116                 }
1117
1118                 td = get_new_job(global, &def_thread, 0);
1119                 if (!td) {
1120                         ret = 1;
1121                         break;
1122                 }
1123
1124                 /*
1125                  * Seperate multiple job files by a stonewall
1126                  */
1127                 if (!global && stonewall) {
1128                         td->o.stonewall = stonewall;
1129                         stonewall = 0;
1130                 }
1131
1132                 num_opts = 0;
1133                 memset(opts, 0, alloc_opts * sizeof(char *));
1134
1135                 while (1) {
1136                         if (is_buf)
1137                                 p = strsep(&file, "\n");
1138                         else
1139                                 p = fgets(string, 4096, f);
1140                         if (!p)
1141                                 break;
1142
1143                         if (is_empty_or_comment(p))
1144                                 continue;
1145
1146                         strip_blank_front(&p);
1147
1148                         /*
1149                          * new section, break out and make sure we don't
1150                          * fgets() a new line at the top.
1151                          */
1152                         if (p[0] == '[') {
1153                                 skip_fgets = 1;
1154                                 break;
1155                         }
1156
1157                         strip_blank_end(p);
1158
1159                         if (num_opts == alloc_opts) {
1160                                 alloc_opts <<= 1;
1161                                 opts = realloc(opts,
1162                                                 alloc_opts * sizeof(char *));
1163                         }
1164
1165                         opts[num_opts] = strdup(p);
1166                         num_opts++;
1167                 }
1168
1169                 ret = fio_options_parse(td, opts, num_opts);
1170                 if (!ret) {
1171                         if (dump_cmdline)
1172                                 for (i = 0; i < num_opts; i++)
1173                                         log_info("--%s ", opts[i]);
1174
1175                         ret = add_job(td, name, 0);
1176                 } else {
1177                         log_err("fio: job %s dropped\n", name);
1178                         put_job(td);
1179                 }
1180
1181                 for (i = 0; i < num_opts; i++)
1182                         free(opts[i]);
1183                 num_opts = 0;
1184         } while (!ret);
1185
1186         if (dump_cmdline)
1187                 log_info("\n");
1188
1189         i = 0;
1190         while (i < nr_job_sections) {
1191                 free(job_sections[i]);
1192                 i++;
1193         }
1194
1195         for (i = 0; i < num_opts; i++)
1196                 free(opts[i]);
1197
1198         free(string);
1199         free(name);
1200         free(opts);
1201         if (!is_buf && f != stdin)
1202                 fclose(f);
1203         return ret;
1204 }
1205
1206 static int fill_def_thread(void)
1207 {
1208         memset(&def_thread, 0, sizeof(def_thread));
1209
1210         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1211         def_thread.o.timeout = def_timeout;
1212         def_thread.o.error_dump = 1;
1213         /*
1214          * fill default options
1215          */
1216         fio_fill_default_options(&def_thread);
1217         return 0;
1218 }
1219
1220 static void usage(const char *name)
1221 {
1222         printf("%s\n", fio_version_string);
1223         printf("%s [options] [job options] <job file(s)>\n", name);
1224         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1225                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1226                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1227         printf("  --output\t\tWrite output to file\n");
1228         printf("  --runtime\t\tRuntime in seconds\n");
1229         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1230         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1231         printf("  --minimal\t\tMinimal (terse) output\n");
1232         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1233         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1234         printf("  --version\t\tPrint version info and exit\n");
1235         printf("  --help\t\tPrint this page\n");
1236         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1237                 " them\n");
1238         printf("  --enghelp=engine\tPrint ioengine help, or list"
1239                 " available ioengines\n");
1240         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1241                 " cmd\n");
1242         printf("  --showcmd\t\tTurn a job file into command line options\n");
1243         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1244         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1245         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1246                 " writes\n");
1247         printf("  --section=name\tOnly run specified section in job file\n");
1248         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1249                 " (def 1024)\n");
1250         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1251         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1252         printf("  --server=args\t\tStart a backend fio server\n");
1253         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1254         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1255         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1256         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1257 }
1258
1259 #ifdef FIO_INC_DEBUG
1260 struct debug_level debug_levels[] = {
1261         { .name = "process",    .shift = FD_PROCESS, },
1262         { .name = "file",       .shift = FD_FILE, },
1263         { .name = "io",         .shift = FD_IO, },
1264         { .name = "mem",        .shift = FD_MEM, },
1265         { .name = "blktrace",   .shift = FD_BLKTRACE },
1266         { .name = "verify",     .shift = FD_VERIFY },
1267         { .name = "random",     .shift = FD_RANDOM },
1268         { .name = "parse",      .shift = FD_PARSE },
1269         { .name = "diskutil",   .shift = FD_DISKUTIL },
1270         { .name = "job",        .shift = FD_JOB },
1271         { .name = "mutex",      .shift = FD_MUTEX },
1272         { .name = "profile",    .shift = FD_PROFILE },
1273         { .name = "time",       .shift = FD_TIME },
1274         { .name = "net",        .shift = FD_NET },
1275         { .name = NULL, },
1276 };
1277
1278 static int set_debug(const char *string)
1279 {
1280         struct debug_level *dl;
1281         char *p = (char *) string;
1282         char *opt;
1283         int i;
1284
1285         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1286                 log_info("fio: dumping debug options:");
1287                 for (i = 0; debug_levels[i].name; i++) {
1288                         dl = &debug_levels[i];
1289                         log_info("%s,", dl->name);
1290                 }
1291                 log_info("all\n");
1292                 return 1;
1293         }
1294
1295         while ((opt = strsep(&p, ",")) != NULL) {
1296                 int found = 0;
1297
1298                 if (!strncmp(opt, "all", 3)) {
1299                         log_info("fio: set all debug options\n");
1300                         fio_debug = ~0UL;
1301                         continue;
1302                 }
1303
1304                 for (i = 0; debug_levels[i].name; i++) {
1305                         dl = &debug_levels[i];
1306                         found = !strncmp(opt, dl->name, strlen(dl->name));
1307                         if (!found)
1308                                 continue;
1309
1310                         if (dl->shift == FD_JOB) {
1311                                 opt = strchr(opt, ':');
1312                                 if (!opt) {
1313                                         log_err("fio: missing job number\n");
1314                                         break;
1315                                 }
1316                                 opt++;
1317                                 fio_debug_jobno = atoi(opt);
1318                                 log_info("fio: set debug jobno %d\n",
1319                                                         fio_debug_jobno);
1320                         } else {
1321                                 log_info("fio: set debug option %s\n", opt);
1322                                 fio_debug |= (1UL << dl->shift);
1323                         }
1324                         break;
1325                 }
1326
1327                 if (!found)
1328                         log_err("fio: debug mask %s not found\n", opt);
1329         }
1330         return 0;
1331 }
1332 #else
1333 static int set_debug(const char *string)
1334 {
1335         log_err("fio: debug tracing not included in build\n");
1336         return 1;
1337 }
1338 #endif
1339
1340 static void fio_options_fill_optstring(void)
1341 {
1342         char *ostr = cmd_optstr;
1343         int i, c;
1344
1345         c = i = 0;
1346         while (l_opts[i].name) {
1347                 ostr[c++] = l_opts[i].val;
1348                 if (l_opts[i].has_arg == required_argument)
1349                         ostr[c++] = ':';
1350                 else if (l_opts[i].has_arg == optional_argument) {
1351                         ostr[c++] = ':';
1352                         ostr[c++] = ':';
1353                 }
1354                 i++;
1355         }
1356         ostr[c] = '\0';
1357 }
1358
1359 static int client_flag_set(char c)
1360 {
1361         int i;
1362
1363         i = 0;
1364         while (l_opts[i].name) {
1365                 int val = l_opts[i].val;
1366
1367                 if (c == (val & 0xff))
1368                         return (val & FIO_CLIENT_FLAG);
1369
1370                 i++;
1371         }
1372
1373         return 0;
1374 }
1375
1376 void parse_cmd_client(void *client, char *opt)
1377 {
1378         fio_client_add_cmd_option(client, opt);
1379 }
1380
1381 int parse_cmd_line(int argc, char *argv[])
1382 {
1383         struct thread_data *td = NULL;
1384         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1385         char *ostr = cmd_optstr;
1386         void *pid_file = NULL;
1387         void *cur_client = NULL;
1388         int backend = 0;
1389
1390         /*
1391          * Reset optind handling, since we may call this multiple times
1392          * for the backend.
1393          */
1394         optind = 1;
1395
1396         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1397                 did_arg = 1;
1398
1399                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1400                         parse_cmd_client(cur_client, argv[optind - 1]);
1401                         c &= ~FIO_CLIENT_FLAG;
1402                 }
1403
1404                 switch (c) {
1405                 case 'a':
1406                         smalloc_pool_size = atoi(optarg);
1407                         break;
1408                 case 't':
1409                         def_timeout = atoi(optarg);
1410                         break;
1411                 case 'l':
1412                         write_lat_log = 1;
1413                         break;
1414                 case 'b':
1415                         write_bw_log = 1;
1416                         break;
1417                 case 'o':
1418                         f_out = fopen(optarg, "w+");
1419                         if (!f_out) {
1420                                 perror("fopen output");
1421                                 exit(1);
1422                         }
1423                         f_err = f_out;
1424                         break;
1425                 case 'm':
1426                         output_format = FIO_OUTPUT_TERSE;
1427                         break;
1428                 case 'F':
1429                         if (!strcmp(optarg, "minimal") ||
1430                             !strcmp(optarg, "terse") ||
1431                             !strcmp(optarg, "csv"))
1432                                 output_format = FIO_OUTPUT_TERSE;
1433                         else if (!strcmp(optarg, "json"))
1434                                 output_format = FIO_OUTPUT_JSON;
1435                         else
1436                                 output_format = FIO_OUTPUT_NORMAL;
1437                         break;
1438                 case 'h':
1439                         if (!cur_client) {
1440                                 usage(argv[0]);
1441                                 do_exit++;
1442                         }
1443                         break;
1444                 case 'c':
1445                         if (!cur_client) {
1446                                 fio_show_option_help(optarg);
1447                                 do_exit++;
1448                         }
1449                         break;
1450                 case 'i':
1451                         if (!cur_client) {
1452                                 fio_show_ioengine_help(optarg);
1453                                 do_exit++;
1454                         }
1455                         break;
1456                 case 's':
1457                         dump_cmdline = 1;
1458                         break;
1459                 case 'r':
1460                         read_only = 1;
1461                         break;
1462                 case 'v':
1463                         if (!cur_client) {
1464                                 log_info("%s\n", fio_version_string);
1465                                 do_exit++;
1466                         }
1467                         break;
1468                 case 'V':
1469                         terse_version = atoi(optarg);
1470                         if (!(terse_version == 2 || terse_version == 3 ||
1471                              terse_version == 4)) {
1472                                 log_err("fio: bad terse version format\n");
1473                                 exit_val = 1;
1474                                 do_exit++;
1475                         }
1476                         break;
1477                 case 'e':
1478                         if (!strcmp("always", optarg))
1479                                 eta_print = FIO_ETA_ALWAYS;
1480                         else if (!strcmp("never", optarg))
1481                                 eta_print = FIO_ETA_NEVER;
1482                         break;
1483                 case 'd':
1484                         if (set_debug(optarg))
1485                                 do_exit++;
1486                         break;
1487                 case 'x': {
1488                         size_t new_size;
1489
1490                         if (!strcmp(optarg, "global")) {
1491                                 log_err("fio: can't use global as only "
1492                                         "section\n");
1493                                 do_exit++;
1494                                 exit_val = 1;
1495                                 break;
1496                         }
1497                         new_size = (nr_job_sections + 1) * sizeof(char *);
1498                         job_sections = realloc(job_sections, new_size);
1499                         job_sections[nr_job_sections] = strdup(optarg);
1500                         nr_job_sections++;
1501                         break;
1502                         }
1503                 case 'p':
1504                         exec_profile = strdup(optarg);
1505                         break;
1506                 case FIO_GETOPT_JOB: {
1507                         const char *opt = l_opts[lidx].name;
1508                         char *val = optarg;
1509
1510                         if (!strncmp(opt, "name", 4) && td) {
1511                                 ret = add_job(td, td->o.name ?: "fio", 0);
1512                                 if (ret)
1513                                         return 0;
1514                                 td = NULL;
1515                         }
1516                         if (!td) {
1517                                 int is_section = !strncmp(opt, "name", 4);
1518                                 int global = 0;
1519
1520                                 if (!is_section || !strncmp(val, "global", 6))
1521                                         global = 1;
1522
1523                                 if (is_section && skip_this_section(val))
1524                                         continue;
1525
1526                                 td = get_new_job(global, &def_thread, 1);
1527                                 if (!td || ioengine_load(td))
1528                                         return 0;
1529                                 fio_options_set_ioengine_opts(l_opts, td);
1530                         }
1531
1532                         ret = fio_cmd_option_parse(td, opt, val);
1533
1534                         if (!ret && !strcmp(opt, "ioengine")) {
1535                                 free_ioengine(td);
1536                                 if (ioengine_load(td))
1537                                         return 0;
1538                                 fio_options_set_ioengine_opts(l_opts, td);
1539                         }
1540                         break;
1541                 }
1542                 case FIO_GETOPT_IOENGINE: {
1543                         const char *opt = l_opts[lidx].name;
1544                         char *val = optarg;
1545                         opt = l_opts[lidx].name;
1546                         val = optarg;
1547                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1548                         break;
1549                 }
1550                 case 'w':
1551                         warnings_fatal = 1;
1552                         break;
1553                 case 'j':
1554                         max_jobs = atoi(optarg);
1555                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1556                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1557                                 do_exit++;
1558                                 exit_val = 1;
1559                         }
1560                         break;
1561                 case 'S':
1562                         if (nr_clients) {
1563                                 log_err("fio: can't be both client and server\n");
1564                                 do_exit++;
1565                                 exit_val = 1;
1566                                 break;
1567                         }
1568                         if (optarg)
1569                                 fio_server_set_arg(optarg);
1570                         is_backend = 1;
1571                         backend = 1;
1572                         break;
1573                 case 'D':
1574                         pid_file = strdup(optarg);
1575                         break;
1576                 case 'C':
1577                         if (is_backend) {
1578                                 log_err("fio: can't be both client and server\n");
1579                                 do_exit++;
1580                                 exit_val = 1;
1581                                 break;
1582                         }
1583                         if (fio_client_add(optarg, &cur_client)) {
1584                                 log_err("fio: failed adding client %s\n", optarg);
1585                                 do_exit++;
1586                                 exit_val = 1;
1587                                 break;
1588                         }
1589                         /*
1590                          * If the next argument exists and isn't an option,
1591                          * assume it's a job file for this client only.
1592                          */
1593                         while (optind < argc) {
1594                                 if (!strncmp(argv[optind], "--", 2) ||
1595                                     !strncmp(argv[optind], "-", 1))
1596                                         break;
1597
1598                                 fio_client_add_ini_file(cur_client, argv[optind]);
1599                                 optind++;
1600                         }
1601                         break;
1602                 default:
1603                         do_exit++;
1604                         exit_val = 1;
1605                         break;
1606                 }
1607                 if (do_exit)
1608                         break;
1609         }
1610
1611         if (do_exit) {
1612                 if (exit_val && !(is_backend || nr_clients))
1613                         exit(exit_val);
1614         }
1615
1616         if (nr_clients && fio_clients_connect()) {
1617                 do_exit++;
1618                 exit_val = 1;
1619                 return -1;
1620         }
1621
1622         if (is_backend && backend)
1623                 return fio_start_server(pid_file);
1624
1625         if (td) {
1626                 if (!ret)
1627                         ret = add_job(td, td->o.name ?: "fio", 0);
1628         }
1629
1630         while (!ret && optind < argc) {
1631                 ini_idx++;
1632                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1633                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1634                 optind++;
1635         }
1636
1637         return ini_idx;
1638 }
1639
1640 int parse_options(int argc, char *argv[])
1641 {
1642         int job_files, i;
1643
1644         f_out = stdout;
1645         f_err = stderr;
1646
1647         fio_options_fill_optstring();
1648         fio_options_dup_and_init(l_opts);
1649
1650         atexit(free_shm);
1651
1652         if (fill_def_thread())
1653                 return 1;
1654
1655         job_files = parse_cmd_line(argc, argv);
1656
1657         if (job_files > 0) {
1658                 for (i = 0; i < job_files; i++) {
1659                         if (fill_def_thread())
1660                                 return 1;
1661                         if (nr_clients) {
1662                                 if (fio_clients_send_ini(ini_file[i]))
1663                                         return 1;
1664                                 free(ini_file[i]);
1665                         } else if (!is_backend) {
1666                                 if (parse_jobs_ini(ini_file[i], 0, i))
1667                                         return 1;
1668                                 free(ini_file[i]);
1669                         }
1670                 }
1671         } else if (nr_clients) {
1672                 if (fill_def_thread())
1673                         return 1;
1674                 if (fio_clients_send_ini(NULL))
1675                         return 1;
1676         }
1677
1678         free(ini_file);
1679         fio_options_free(&def_thread);
1680
1681         if (!thread_number) {
1682                 if (dump_cmdline)
1683                         return 0;
1684                 if (exec_profile)
1685                         return 0;
1686                 if (is_backend || nr_clients)
1687                         return 0;
1688                 if (did_arg)
1689                         return 0;
1690
1691                 log_err("No jobs(s) defined\n\n");
1692
1693                 if (!did_arg) {
1694                         usage(argv[0]);
1695                         return 1;
1696                 }
1697
1698                 return 0;
1699         }
1700
1701         if (def_thread.o.gtod_offload) {
1702                 fio_gtod_init();
1703                 fio_gtod_offload = 1;
1704                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1705         }
1706
1707         if (output_format == FIO_OUTPUT_NORMAL)
1708                 log_info("%s\n", fio_version_string);
1709
1710         return 0;
1711 }