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 <assert.h>
  13 #include <sys/ipc.h>
  14 #include <sys/shm.h>
  15 #include <sys/types.h>
  16 #include <sys/stat.h>
  17
  18 #include "fio.h"
  19 #include "parse.h"
  20
  21 #define FIO_RANDSEED            (0xb1899bedUL)
  22
  23 #define td_var_offset(var)      ((size_t) &((struct thread_data *)0)->var)
  24
  25 static int str_rw_cb(void *, const char *);
  26 static int str_ioengine_cb(void *, const char *);
  27 static int str_mem_cb(void *, const char *);
  28 static int str_verify_cb(void *, const char *);
  29 static int str_lockmem_cb(void *, unsigned long *);
  30 #ifdef FIO_HAVE_IOPRIO
  31 static int str_prio_cb(void *, unsigned int *);
  32 static int str_prioclass_cb(void *, unsigned int *);
  33 #endif
  34 static int str_exitall_cb(void);
  35 static int str_cpumask_cb(void *, unsigned int *);
  36
  37 #define __stringify_1(x)        #x
  38 #define __stringify(x)          __stringify_1(x)
  39
  40 /*
  41  * Map of job/command line options
  42  */
  43 static struct fio_option options[] = {
  44         {
  45                 .name   = "name",
  46                 .type   = FIO_OPT_STR_STORE,
  47                 .off1   = td_var_offset(name),
  48                 .help   = "Name of this job",
  49         },
  50         {
  51                 .name   = "directory",
  52                 .type   = FIO_OPT_STR_STORE,
  53                 .off1   = td_var_offset(directory),
  54                 .help   = "Directory to store files in",
  55         },
  56         {
  57                 .name   = "filename",
  58                 .type   = FIO_OPT_STR_STORE,
  59                 .off1   = td_var_offset(filename),
  60                 .help   = "Force the use of a specific file",
  61         },
  62         {
  63                 .name   = "rw",
  64                 .type   = FIO_OPT_STR,
  65                 .cb     = str_rw_cb,
  66                 .help   = "IO direction",
  67                 .def    = "read",
  68                 .posval = { "read", "write", "randwrite", "randread", "rw",
  69                                 "randrw", },
  70         },
  71         {
  72                 .name   = "ioengine",
  73                 .type   = FIO_OPT_STR,
  74                 .cb     = str_ioengine_cb,
  75                 .help   = "IO engine to use",
  76                 .def    = "sync",
  77                 .posval = { "sync", "libaio", "posixaio", "mmap", "splice",
  78                                 "sg", "null", },
  79         },
  80         {
  81                 .name   = "iodepth",
  82                 .type   = FIO_OPT_INT,
  83                 .off1   = td_var_offset(iodepth),
  84                 .help   = "Amount of IO buffers to keep in flight",
  85                 .def    = "1",
  86         },
  87         {
  88                 .name   = "size",
  89                 .type   = FIO_OPT_STR_VAL,
  90                 .off1   = td_var_offset(total_file_size),
  91                 .help   = "Size of device or file",
  92         },
  93         {
  94                 .name   = "bs",
  95                 .type   = FIO_OPT_STR_VAL_INT,
  96                 .off1   = td_var_offset(bs[DDIR_READ]),
  97                 .off2   = td_var_offset(bs[DDIR_WRITE]),
  98                 .help   = "Block size unit",
  99                 .def    = "4k",
 100         },
 101         {
 102                 .name   = "bsrange",
 103                 .type   = FIO_OPT_RANGE,
 104                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 105                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 106                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 107                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 108                 .help   = "Set block size range (in more detail than bs)",
 109         },
 110         {
 111                 .name   = "bs_unaligned",
 112                 .type   = FIO_OPT_STR_SET,
 113                 .off1   = td_var_offset(bs_unaligned),
 114                 .help   = "Don't sector align IO buffer sizes",
 115         },
 116         {
 117                 .name   = "offset",
 118                 .type   = FIO_OPT_STR_VAL,
 119                 .off1   = td_var_offset(start_offset),
 120                 .help   = "Start IO from this offset",
 121                 .def    = "0",
 122         },
 123         {
 124                 .name   = "randrepeat",
 125                 .type   = FIO_OPT_BOOL,
 126                 .off1   = td_var_offset(rand_repeatable),
 127                 .help   = "Use repeatable random IO pattern",
 128                 .def    = "1",
 129         },
 130         {
 131                 .name   = "norandommap",
 132                 .type   = FIO_OPT_STR_SET,
 133                 .off1   = td_var_offset(norandommap),
 134                 .help   = "Accept potential duplicate random blocks",
 135         },
 136         {
 137                 .name   = "nrfiles",
 138                 .type   = FIO_OPT_INT,
 139                 .off1   = td_var_offset(nr_files),
 140                 .help   = "Split job workload between this number of files",
 141                 .def    = "1",
 142         },
 143         {
 144                 .name   = "fsync",
 145                 .type   = FIO_OPT_INT,
 146                 .off1   = td_var_offset(fsync_blocks),
 147                 .help   = "Issue fsync for writes every given number of blocks",
 148                 .def    = "0",
 149         },
 150         {
 151                 .name   = "direct",
 152                 .type   = FIO_OPT_BOOL,
 153                 .off1   = td_var_offset(odirect),
 154                 .help   = "Use O_DIRECT IO (negates buffered)",
 155                 .def    = "0",
 156         },
 157         {
 158                 .name   = "buffered",
 159                 .type   = FIO_OPT_BOOL,
 160                 .off1   = td_var_offset(odirect),
 161                 .neg    = 1,
 162                 .help   = "Use buffered IO (negates direct)",
 163                 .def    = "1",
 164         },
 165         {
 166                 .name   = "overwrite",
 167                 .type   = FIO_OPT_BOOL,
 168                 .off1   = td_var_offset(overwrite),
 169                 .help   = "When writing, set whether to overwrite current data",
 170                 .def    = "0",
 171         },
 172         {
 173                 .name   = "loops",
 174                 .type   = FIO_OPT_INT,
 175                 .off1   = td_var_offset(loops),
 176                 .help   = "Number of times to run the job",
 177                 .def    = "1",
 178         },
 179         {
 180                 .name   = "numjobs",
 181                 .type   = FIO_OPT_INT,
 182                 .off1   = td_var_offset(numjobs),
 183                 .help   = "Duplicate this job this many times",
 184                 .def    = "1",
 185         },
 186         {
 187                 .name   = "startdelay",
 188                 .type   = FIO_OPT_INT,
 189                 .off1   = td_var_offset(start_delay),
 190                 .help   = "Only start job when this period has passed",
 191                 .def    = "0",
 192         },
 193         {
 194                 .name   = "runtime",
 195                 .alias  = "timeout",
 196                 .type   = FIO_OPT_STR_VAL_TIME,
 197                 .off1   = td_var_offset(timeout),
 198                 .help   = "Stop workload when this amount of time has passed",
 199                 .def    = "0",
 200         },
 201         {
 202                 .name   = "mem",
 203                 .type   = FIO_OPT_STR,
 204                 .cb     = str_mem_cb,
 205                 .help   = "Backing type for IO buffers",
 206                 .def    = "malloc",
 207                 .posval =  { "malloc", "shm", "shmhuge", "mmap", "mmaphuge", },
 208         },
 209         {
 210                 .name   = "verify",
 211                 .type   = FIO_OPT_STR,
 212                 .cb     = str_verify_cb,
 213                 .help   = "Verify sum function",
 214                 .def    = "0",
 215                 .posval = { "crc32", "md5", },
 216         },
 217         {
 218                 .name   = "write_iolog",
 219                 .type   = FIO_OPT_STR_STORE,
 220                 .off1   = td_var_offset(write_iolog_file),
 221                 .help   = "Store IO pattern to file",
 222         },
 223         {
 224                 .name   = "read_iolog",
 225                 .type   = FIO_OPT_STR_STORE,
 226                 .off1   = td_var_offset(read_iolog_file),
 227                 .help   = "Playback IO pattern from file",
 228         },
 229         {
 230                 .name   = "exec_prerun",
 231                 .type   = FIO_OPT_STR_STORE,
 232                 .off1   = td_var_offset(exec_prerun),
 233                 .help   = "Execute this file prior to running job",
 234         },
 235         {
 236                 .name   = "exec_postrun",
 237                 .type   = FIO_OPT_STR_STORE,
 238                 .off1   = td_var_offset(exec_postrun),
 239                 .help   = "Execute this file after running job",
 240         },
 241 #ifdef FIO_HAVE_IOSCHED_SWITCH
 242         {
 243                 .name   = "ioscheduler",
 244                 .type   = FIO_OPT_STR_STORE,
 245                 .off1   = td_var_offset(ioscheduler),
 246                 .help   = "Use this IO scheduler on the backing device",
 247         },
 248 #endif
 249         {
 250                 .name   = "zonesize",
 251                 .type   = FIO_OPT_STR_VAL,
 252                 .off1   = td_var_offset(zone_size),
 253                 .help   = "Give size of an IO zone",
 254                 .def    = "0",
 255         },
 256         {
 257                 .name   = "zoneskip",
 258                 .type   = FIO_OPT_STR_VAL,
 259                 .off1   = td_var_offset(zone_skip),
 260                 .help   = "Space between IO zones",
 261                 .def    = "0",
 262         },
 263         {
 264                 .name   = "lockmem",
 265                 .type   = FIO_OPT_STR_VAL,
 266                 .cb     = str_lockmem_cb,
 267                 .help   = "Lock down this amount of memory",
 268                 .def    = "0",
 269         },
 270         {
 271                 .name   = "rwmixcycle",
 272                 .type   = FIO_OPT_INT,
 273                 .off1   = td_var_offset(rwmixcycle),
 274                 .help   = "Cycle period for mixed read/write workloads (msec)",
 275                 .def    = "500",
 276         },
 277         {
 278                 .name   = "rwmixread",
 279                 .type   = FIO_OPT_INT,
 280                 .off1   = td_var_offset(rwmixread),
 281                 .maxval = 100,
 282                 .help   = "Percentage of mixed workload that is reads",
 283                 .def    = "50",
 284         },
 285         {
 286                 .name   = "rwmixwrite",
 287                 .type   = FIO_OPT_INT,
 288                 .off1   = td_var_offset(rwmixwrite),
 289                 .maxval = 100,
 290                 .help   = "Percentage of mixed workload that is writes",
 291                 .def    = "50",
 292         },
 293         {
 294                 .name   = "nice",
 295                 .type   = FIO_OPT_INT,
 296                 .off1   = td_var_offset(nice),
 297                 .help   = "Set job CPU nice value",
 298                 .minval = -19,
 299                 .maxval = 20,
 300                 .def    = "0",
 301         },
 302 #ifdef FIO_HAVE_IOPRIO
 303         {
 304                 .name   = "prio",
 305                 .type   = FIO_OPT_INT,
 306                 .cb     = str_prio_cb,
 307                 .help   = "Set job IO priority value",
 308                 .minval = 0,
 309                 .maxval = 7,
 310         },
 311         {
 312                 .name   = "prioclass",
 313                 .type   = FIO_OPT_INT,
 314                 .cb     = str_prioclass_cb,
 315                 .help   = "Set job IO priority class",
 316                 .minval = 0,
 317                 .maxval = 3,
 318         },
 319 #endif
 320         {
 321                 .name   = "thinktime",
 322                 .type   = FIO_OPT_INT,
 323                 .off1   = td_var_offset(thinktime),
 324                 .help   = "Idle time between IO buffers (usec)",
 325                 .def    = "0",
 326         },
 327         {
 328                 .name   = "thinktime_blocks",
 329                 .type   = FIO_OPT_INT,
 330                 .off1   = td_var_offset(thinktime_blocks),
 331                 .help   = "IO buffer period between 'thinktime'",
 332                 .def    = "1",
 333         },
 334         {
 335                 .name   = "rate",
 336                 .type   = FIO_OPT_INT,
 337                 .off1   = td_var_offset(rate),
 338                 .help   = "Set bandwidth rate",
 339         },
 340         {
 341                 .name   = "ratemin",
 342                 .type   = FIO_OPT_INT,
 343                 .off1   = td_var_offset(ratemin),
 344                 .help   = "The bottom limit accepted",
 345         },
 346         {
 347                 .name   = "ratecycle",
 348                 .type   = FIO_OPT_INT,
 349                 .off1   = td_var_offset(ratecycle),
 350                 .help   = "Window average for rate limits (msec)",
 351                 .def    = "1000",
 352         },
 353         {
 354                 .name   = "invalidate",
 355                 .type   = FIO_OPT_BOOL,
 356                 .off1   = td_var_offset(invalidate_cache),
 357                 .help   = "Invalidate buffer/page cache prior to running job",
 358                 .def    = "1",
 359         },
 360         {
 361                 .name   = "sync",
 362                 .type   = FIO_OPT_BOOL,
 363                 .off1   = td_var_offset(sync_io),
 364                 .help   = "Use O_SYNC for buffered writes",
 365                 .def    = "0",
 366         },
 367         {
 368                 .name   = "bwavgtime",
 369                 .type   = FIO_OPT_INT,
 370                 .off1   = td_var_offset(bw_avg_time),
 371                 .help   = "Time window over which to calculate bandwidth (msec)",
 372                 .def    = "500",
 373         },
 374         {
 375                 .name   = "create_serialize",
 376                 .type   = FIO_OPT_BOOL,
 377                 .off1   = td_var_offset(create_serialize),
 378                 .help   = "Serialize creating of job files",
 379                 .def    = "1",
 380         },
 381         {
 382                 .name   = "create_fsync",
 383                 .type   = FIO_OPT_BOOL,
 384                 .off1   = td_var_offset(create_fsync),
 385                 .help   = "Fsync file after creation",
 386                 .def    = "1",
 387         },
 388         {
 389                 .name   = "cpuload",
 390                 .type   = FIO_OPT_INT,
 391                 .off1   = td_var_offset(cpuload),
 392                 .help   = "Use this percentage of CPU",
 393         },
 394         {
 395                 .name   = "cpuchunks",
 396                 .type   = FIO_OPT_INT,
 397                 .off1   = td_var_offset(cpucycle),
 398                 .help   = "Length of the CPU burn cycles",
 399         },
 400 #ifdef FIO_HAVE_CPU_AFFINITY
 401         {
 402                 .name   = "cpumask",
 403                 .type   = FIO_OPT_INT,
 404                 .cb     = str_cpumask_cb,
 405                 .help   = "CPU affinity mask",
 406         },
 407 #endif
 408         {
 409                 .name   = "end_fsync",
 410                 .type   = FIO_OPT_BOOL,
 411                 .off1   = td_var_offset(end_fsync),
 412                 .help   = "Include fsync at the end of job",
 413                 .def    = "0",
 414         },
 415         {
 416                 .name   = "unlink",
 417                 .type   = FIO_OPT_BOOL,
 418                 .off1   = td_var_offset(unlink),
 419                 .help   = "Unlink created files after job has completed",
 420                 .def    = "0",
 421         },
 422         {
 423                 .name   = "exitall",
 424                 .type   = FIO_OPT_STR_SET,
 425                 .cb     = str_exitall_cb,
 426                 .help   = "Terminate all jobs when one exits",
 427         },
 428         {
 429                 .name   = "stonewall",
 430                 .type   = FIO_OPT_STR_SET,
 431                 .off1   = td_var_offset(stonewall),
 432                 .help   = "Insert a hard barrier between this job and previous",
 433         },
 434         {
 435                 .name   = "thread",
 436                 .type   = FIO_OPT_STR_SET,
 437                 .off1   = td_var_offset(use_thread),
 438                 .help   = "Use threads instead of forks",
 439         },
 440         {
 441                 .name   = "write_bw_log",
 442                 .type   = FIO_OPT_STR_SET,
 443                 .off1   = td_var_offset(write_bw_log),
 444                 .help   = "Write log of bandwidth during run",
 445         },
 446         {
 447                 .name   = "write_lat_log",
 448                 .type   = FIO_OPT_STR_SET,
 449                 .off1   = td_var_offset(write_lat_log),
 450                 .help   = "Write log of latency during run",
 451         },
 452         {
 453                 .name   = "hugepage-size",
 454                 .type   = FIO_OPT_STR_VAL,
 455                 .off1   = td_var_offset(hugepage_size),
 456                 .help   = "When using hugepages, specify size of each page",
 457                 .def    = __stringify(FIO_HUGE_PAGE),
 458         },
 459         {
 460                 .name = NULL,
 461         },
 462 };
 463
 464 #define FIO_JOB_OPTS    (sizeof(options) / sizeof(struct fio_option))
 465 #define FIO_CMD_OPTS    (16)
 466 #define FIO_GETOPT_JOB  (0x89988998)
 467
 468 /*
 469  * Command line options. These will contain the above, plus a few
 470  * extra that only pertain to fio itself and not jobs.
 471  */
 472 static struct option long_options[FIO_JOB_OPTS + FIO_CMD_OPTS] = {
 473         {
 474                 .name           = "output",
 475                 .has_arg        = required_argument,
 476                 .val            = 'o',
 477         },
 478         {
 479                 .name           = "timeout",
 480                 .has_arg        = required_argument,
 481                 .val            = 't',
 482         },
 483         {
 484                 .name           = "latency-log",
 485                 .has_arg        = required_argument,
 486                 .val            = 'l',
 487         },
 488         {
 489                 .name           = "bandwidth-log",
 490                 .has_arg        = required_argument,
 491                 .val            = 'b',
 492         },
 493         {
 494                 .name           = "minimal",
 495                 .has_arg        = optional_argument,
 496                 .val            = 'm',
 497         },
 498         {
 499                 .name           = "version",
 500                 .has_arg        = no_argument,
 501                 .val            = 'v',
 502         },
 503         {
 504                 .name           = "help",
 505                 .has_arg        = no_argument,
 506                 .val            = 'h',
 507         },
 508         {
 509                 .name           = "cmdhelp",
 510                 .has_arg        = required_argument,
 511                 .val            = 'c',
 512         },
 513         {
 514                 .name           = NULL,
 515         },
 516 };
 517
 518 static int def_timeout = 0;
 519
 520 static char fio_version_string[] = "fio 1.11";
 521
 522 static char **ini_file;
 523 static int max_jobs = MAX_JOBS;
 524
 525 struct thread_data def_thread;
 526 struct thread_data *threads = NULL;
 527
 528 int exitall_on_terminate = 0;
 529 int terse_output = 0;
 530 unsigned long long mlock_size = 0;
 531 FILE *f_out = NULL;
 532 FILE *f_err = NULL;
 533
 534 static int write_lat_log = 0;
 535 static int write_bw_log = 0;
 536
 537 /*
 538  * Return a free job structure.
 539  */
 540 static struct thread_data *get_new_job(int global, struct thread_data *parent)
 541 {
 542         struct thread_data *td;
 543
 544         if (global)
 545                 return &def_thread;
 546         if (thread_number >= max_jobs)
 547                 return NULL;
 548
 549         td = &threads[thread_number++];
 550         *td = *parent;
 551
 552         td->thread_number = thread_number;
 553         return td;
 554 }
 555
 556 static void put_job(struct thread_data *td)
 557 {
 558         if (td == &def_thread)
 559                 return;
 560
 561         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 562         thread_number--;
 563 }
 564
 565 /*
 566  * Lazy way of fixing up options that depend on each other. We could also
 567  * define option callback handlers, but this is easier.
 568  */
 569 static void fixup_options(struct thread_data *td)
 570 {
 571         if (!td->rwmixread && td->rwmixwrite)
 572                 td->rwmixread = 100 - td->rwmixwrite;
 573
 574         if (td->write_iolog_file && td->read_iolog_file) {
 575                 log_err("fio: read iolog overrides write_iolog\n");
 576                 free(td->write_iolog_file);
 577                 td->write_iolog_file = NULL;
 578         }
 579
 580         if (td->io_ops->flags & FIO_SYNCIO)
 581                 td->iodepth = 1;
 582         else {
 583                 if (!td->iodepth)
 584                         td->iodepth = td->nr_files;
 585         }
 586
 587         /*
 588          * only really works for sequential io for now, and with 1 file
 589          */
 590         if (td->zone_size && !td->sequential && td->nr_files == 1)
 591                 td->zone_size = 0;
 592
 593         /*
 594          * Reads can do overwrites, we always need to pre-create the file
 595          */
 596         if (td_read(td) || td_rw(td))
 597                 td->overwrite = 1;
 598
 599         if (!td->min_bs[DDIR_READ])
 600                 td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
 601         if (!td->max_bs[DDIR_READ])
 602                 td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
 603         if (!td->min_bs[DDIR_WRITE])
 604                 td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
 605         if (!td->max_bs[DDIR_WRITE])
 606                 td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
 607
 608         td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
 609
 610         if (td_read(td) && !td_rw(td))
 611                 td->verify = 0;
 612
 613         if (td->norandommap && td->verify != VERIFY_NONE) {
 614                 log_err("fio: norandommap given, verify disabled\n");
 615                 td->verify = VERIFY_NONE;
 616         }
 617         if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
 618                 log_err("fio: bs_unaligned may not work with raw io\n");
 619
 620         /*
 621          * O_DIRECT and char doesn't mix, clear that flag if necessary.
 622          */
 623         if (td->filetype == FIO_TYPE_CHAR && td->odirect)
 624                 td->odirect = 0;
 625 }
 626
 627 /*
 628  * This function leaks the buffer
 629  */
 630 static char *to_kmg(unsigned int val)
 631 {
 632         char *buf = malloc(32);
 633         char post[] = { 0, 'K', 'M', 'G', 'P', 0 };
 634         char *p = post;
 635
 636         do {
 637                 if (val & 1023)
 638                         break;
 639
 640                 val >>= 10;
 641                 p++;
 642         } while (*p);
 643
 644         snprintf(buf, 31, "%u%c", val, *p);
 645         return buf;
 646 }
 647
 648 /*
 649  * Adds a job to the list of things todo. Sanitizes the various options
 650  * to make sure we don't have conflicts, and initializes various
 651  * members of td.
 652  */
 653 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 654 {
 655         const char *ddir_str[] = { "read", "write", "randread", "randwrite",
 656                                    "rw", NULL, "randrw" };
 657         struct stat sb;
 658         int numjobs, ddir, i;
 659         struct fio_file *f;
 660
 661         /*
 662          * the def_thread is just for options, it's not a real job
 663          */
 664         if (td == &def_thread)
 665                 return 0;
 666
 667         assert(td->io_ops);
 668
 669         if (td->odirect)
 670                 td->io_ops->flags |= FIO_RAWIO;
 671
 672         td->filetype = FIO_TYPE_FILE;
 673         if (!stat(jobname, &sb)) {
 674                 if (S_ISBLK(sb.st_mode))
 675                         td->filetype = FIO_TYPE_BD;
 676                 else if (S_ISCHR(sb.st_mode))
 677                         td->filetype = FIO_TYPE_CHAR;
 678         }
 679
 680         fixup_options(td);
 681
 682         if (td->filename)
 683                 td->nr_uniq_files = 1;
 684         else
 685                 td->nr_uniq_files = td->nr_files;
 686
 687         if (td->filetype == FIO_TYPE_FILE || td->filename) {
 688                 char tmp[PATH_MAX];
 689                 int len = 0;
 690
 691                 if (td->directory && td->directory[0] != '\0')
 692                         len = sprintf(tmp, "%s/", td->directory);
 693
 694                 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
 695
 696                 for_each_file(td, f, i) {
 697                         memset(f, 0, sizeof(*f));
 698                         f->fd = -1;
 699
 700                         if (td->filename)
 701                                 sprintf(tmp + len, "%s", td->filename);
 702                         else
 703                                 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
 704                         f->file_name = strdup(tmp);
 705                 }
 706         } else {
 707                 td->nr_files = 1;
 708                 td->files = malloc(sizeof(struct fio_file));
 709                 f = &td->files[0];
 710
 711                 memset(f, 0, sizeof(*f));
 712                 f->fd = -1;
 713                 f->file_name = strdup(jobname);
 714         }
 715
 716         for_each_file(td, f, i) {
 717                 f->file_size = td->total_file_size / td->nr_files;
 718                 f->file_offset = td->start_offset;
 719         }
 720
 721         fio_sem_init(&td->mutex, 0);
 722
 723         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 724         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 725         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 726
 727         if (td->stonewall && td->thread_number > 1)
 728                 groupid++;
 729
 730         td->groupid = groupid;
 731
 732         if (setup_rate(td))
 733                 goto err;
 734
 735         if (td->write_lat_log) {
 736                 setup_log(&td->slat_log);
 737                 setup_log(&td->clat_log);
 738         }
 739         if (td->write_bw_log)
 740                 setup_log(&td->bw_log);
 741
 742         if (!td->name)
 743                 td->name = strdup(jobname);
 744
 745         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 746
 747         if (!terse_output) {
 748                 if (!job_add_num) {
 749                         if (td->io_ops->flags & FIO_CPUIO)
 750                                 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
 751                         else {
 752                                 char *c1, *c2, *c3, *c4;
 753
 754                                 c1 = to_kmg(td->min_bs[DDIR_READ]);
 755                                 c2 = to_kmg(td->max_bs[DDIR_READ]);
 756                                 c3 = to_kmg(td->min_bs[DDIR_WRITE]);
 757                                 c4 = to_kmg(td->max_bs[DDIR_WRITE]);
 758
 759                                 fprintf(f_out, "%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[ddir], c1, c2, c3, c4, td->io_ops->name, td->iodepth);
 760
 761                                 free(c1);
 762                                 free(c2);
 763                                 free(c3);
 764                                 free(c4);
 765                         }
 766                 } else if (job_add_num == 1)
 767                         fprintf(f_out, "...\n");
 768         }
 769
 770         /*
 771          * recurse add identical jobs, clear numjobs and stonewall options
 772          * as they don't apply to sub-jobs
 773          */
 774         numjobs = td->numjobs;
 775         while (--numjobs) {
 776                 struct thread_data *td_new = get_new_job(0, td);
 777
 778                 if (!td_new)
 779                         goto err;
 780
 781                 td_new->numjobs = 1;
 782                 td_new->stonewall = 0;
 783                 job_add_num = numjobs - 1;
 784
 785                 if (add_job(td_new, jobname, job_add_num))
 786                         goto err;
 787         }
 788         return 0;
 789 err:
 790         put_job(td);
 791         return -1;
 792 }
 793
 794 /*
 795  * Initialize the various random states we need (random io, block size ranges,
 796  * read/write mix, etc).
 797  */
 798 int init_random_state(struct thread_data *td)
 799 {
 800         unsigned long seeds[4];
 801         int fd, num_maps, blocks, i;
 802         struct fio_file *f;
 803
 804         if (td->io_ops->flags & FIO_CPUIO)
 805                 return 0;
 806
 807         fd = open("/dev/urandom", O_RDONLY);
 808         if (fd == -1) {
 809                 td_verror(td, errno);
 810                 return 1;
 811         }
 812
 813         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 814                 td_verror(td, EIO);
 815                 close(fd);
 816                 return 1;
 817         }
 818
 819         close(fd);
 820
 821         os_random_seed(seeds[0], &td->bsrange_state);
 822         os_random_seed(seeds[1], &td->verify_state);
 823         os_random_seed(seeds[2], &td->rwmix_state);
 824
 825         if (td->sequential)
 826                 return 0;
 827
 828         if (td->rand_repeatable)
 829                 seeds[3] = FIO_RANDSEED;
 830
 831         if (!td->norandommap) {
 832                 for_each_file(td, f, i) {
 833                         blocks = (f->file_size + td->rw_min_bs - 1) / td->rw_min_bs;
 834                         num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
 835                         f->file_map = malloc(num_maps * sizeof(long));
 836                         f->num_maps = num_maps;
 837                         memset(f->file_map, 0, num_maps * sizeof(long));
 838                 }
 839         }
 840
 841         os_random_seed(seeds[3], &td->random_state);
 842         return 0;
 843 }
 844
 845 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 846 {
 847 #ifdef FIO_HAVE_CPU_AFFINITY
 848         unsigned int i;
 849
 850         CPU_ZERO(&cpumask);
 851
 852         for (i = 0; i < sizeof(int) * 8; i++) {
 853                 if ((1 << i) & cpu)
 854                         CPU_SET(i, &cpumask);
 855         }
 856 #endif
 857 }
 858
 859 static int is_empty_or_comment(char *line)
 860 {
 861         unsigned int i;
 862
 863         for (i = 0; i < strlen(line); i++) {
 864                 if (line[i] == ';')
 865                         return 1;
 866                 if (!isspace(line[i]) && !iscntrl(line[i]))
 867                         return 0;
 868         }
 869
 870         return 1;
 871 }
 872
 873 static int str_rw_cb(void *data, const char *mem)
 874 {
 875         struct thread_data *td = data;
 876
 877         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 878                 td->ddir = DDIR_READ;
 879                 td->sequential = 1;
 880                 return 0;
 881         } else if (!strncmp(mem, "randread", 8)) {
 882                 td->ddir = DDIR_READ;
 883                 td->sequential = 0;
 884                 return 0;
 885         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 886                 td->ddir = DDIR_WRITE;
 887                 td->sequential = 1;
 888                 return 0;
 889         } else if (!strncmp(mem, "randwrite", 9)) {
 890                 td->ddir = DDIR_WRITE;
 891                 td->sequential = 0;
 892                 return 0;
 893         } else if (!strncmp(mem, "rw", 2)) {
 894                 td->ddir = DDIR_READ;
 895                 td->iomix = 1;
 896                 td->sequential = 1;
 897                 return 0;
 898         } else if (!strncmp(mem, "randrw", 6)) {
 899                 td->ddir = DDIR_READ;
 900                 td->iomix = 1;
 901                 td->sequential = 0;
 902                 return 0;
 903         }
 904
 905         log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
 906         return 1;
 907 }
 908
 909 static int str_verify_cb(void *data, const char *mem)
 910 {
 911         struct thread_data *td = data;
 912
 913         if (!strncmp(mem, "0", 1)) {
 914                 td->verify = VERIFY_NONE;
 915                 return 0;
 916         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 917                 td->verify = VERIFY_MD5;
 918                 return 0;
 919         } else if (!strncmp(mem, "crc32", 5)) {
 920                 td->verify = VERIFY_CRC32;
 921                 return 0;
 922         }
 923
 924         log_err("fio: verify types: md5, crc32\n");
 925         return 1;
 926 }
 927
 928 /*
 929  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
 930  */
 931 static char *get_mmap_file(const char *str)
 932 {
 933         char *p = strstr(str, ":");
 934
 935         if (!p)
 936                 return NULL;
 937
 938         p++;
 939         strip_blank_front(&p);
 940         strip_blank_end(p);
 941         return strdup(p);
 942 }
 943
 944 static int str_mem_cb(void *data, const char *mem)
 945 {
 946         struct thread_data *td = data;
 947
 948         if (!strncmp(mem, "malloc", 6)) {
 949                 td->mem_type = MEM_MALLOC;
 950                 return 0;
 951         } else if (!strncmp(mem, "mmaphuge", 8)) {
 952 #ifdef FIO_HAVE_HUGETLB
 953                 /*
 954                  * mmaphuge must be appended with the actual file
 955                  */
 956                 td->mmapfile = get_mmap_file(mem);
 957                 if (!td->mmapfile) {
 958                         log_err("fio: mmaphuge:/path/to/file\n");
 959                         return 1;
 960                 }
 961
 962                 td->mem_type = MEM_MMAPHUGE;
 963                 return 0;
 964 #else
 965                 log_err("fio: mmaphuge not available\n");
 966                 return 1;
 967 #endif
 968         } else if (!strncmp(mem, "mmap", 4)) {
 969                 /*
 970                  * Check if the user wants file backed memory. It's ok
 971                  * if there's no file given, we'll just use anon mamp then.
 972                  */
 973                 td->mmapfile = get_mmap_file(mem);
 974                 td->mem_type = MEM_MMAP;
 975                 return 0;
 976         } else if (!strncmp(mem, "shmhuge", 7)) {
 977 #ifdef FIO_HAVE_HUGETLB
 978                 td->mem_type = MEM_SHMHUGE;
 979                 return 0;
 980 #else
 981                 log_err("fio: shmhuge not available\n");
 982                 return 1;
 983 #endif
 984         } else if (!strncmp(mem, "shm", 3)) {
 985                 td->mem_type = MEM_SHM;
 986                 return 0;
 987         }
 988
 989         log_err("fio: mem type: malloc, shm, shmhuge, mmap, mmaphuge\n");
 990         return 1;
 991 }
 992
 993 static int str_ioengine_cb(void *data, const char *str)
 994 {
 995         struct thread_data *td = data;
 996
 997         td->io_ops = load_ioengine(td, str);
 998         if (td->io_ops)
 999                 return 0;
1000
1001         log_err("fio: ioengine= libaio, posixaio, sync, mmap, sgio, splice, cpu, null\n");
1002         log_err("fio: or specify path to dynamic ioengine module\n");
1003         return 1;
1004 }
1005
1006 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
1007 {
1008         mlock_size = *val;
1009         return 0;
1010 }
1011
1012 #ifdef FIO_HAVE_IOPRIO
1013 static int str_prioclass_cb(void *data, unsigned int *val)
1014 {
1015         struct thread_data *td = data;
1016
1017         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
1018         return 0;
1019 }
1020
1021 static int str_prio_cb(void *data, unsigned int *val)
1022 {
1023         struct thread_data *td = data;
1024
1025         td->ioprio |= *val;
1026         return 0;
1027 }
1028 #endif
1029
1030 static int str_exitall_cb(void)
1031 {
1032         exitall_on_terminate = 1;
1033         return 0;
1034 }
1035
1036 static int str_cpumask_cb(void *data, unsigned int *val)
1037 {
1038         struct thread_data *td = data;
1039
1040         fill_cpu_mask(td->cpumask, *val);
1041         return 0;
1042 }
1043
1044 /*
1045  * This is our [ini] type file parser.
1046  */
1047 static int parse_jobs_ini(char *file, int stonewall_flag)
1048 {
1049         unsigned int global;
1050         struct thread_data *td;
1051         char *string, *name;
1052         fpos_t off;
1053         FILE *f;
1054         char *p;
1055         int ret = 0, stonewall;
1056
1057         f = fopen(file, "r");
1058         if (!f) {
1059                 perror("fopen job file");
1060                 return 1;
1061         }
1062
1063         string = malloc(4096);
1064         name = malloc(256);
1065         memset(name, 0, 256);
1066
1067         stonewall = stonewall_flag;
1068         do {
1069                 p = fgets(string, 4095, f);
1070                 if (!p)
1071                         break;
1072                 if (is_empty_or_comment(p))
1073                         continue;
1074                 if (sscanf(p, "[%255s]", name) != 1)
1075                         continue;
1076
1077                 global = !strncmp(name, "global", 6);
1078
1079                 name[strlen(name) - 1] = '\0';
1080
1081                 td = get_new_job(global, &def_thread);
1082                 if (!td) {
1083                         ret = 1;
1084                         break;
1085                 }
1086
1087                 /*
1088                  * Seperate multiple job files by a stonewall
1089                  */
1090                 if (!global && stonewall) {
1091                         td->stonewall = stonewall;
1092                         stonewall = 0;
1093                 }
1094
1095                 fgetpos(f, &off);
1096                 while ((p = fgets(string, 4096, f)) != NULL) {
1097                         if (is_empty_or_comment(p))
1098                                 continue;
1099
1100                         strip_blank_front(&p);
1101
1102                         if (p[0] == '[')
1103                                 break;
1104
1105                         strip_blank_end(p);
1106
1107                         fgetpos(f, &off);
1108
1109                         /*
1110                          * Don't break here, continue parsing options so we
1111                          * dump all the bad ones. Makes trial/error fixups
1112                          * easier on the user.
1113                          */
1114                         ret |= parse_option(p, options, td);
1115                 }
1116
1117                 if (!ret) {
1118                         fsetpos(f, &off);
1119                         ret = add_job(td, name, 0);
1120                 } else {
1121                         log_err("fio: job %s dropped\n", name);
1122                         put_job(td);
1123                 }
1124         } while (!ret);
1125
1126         free(string);
1127         free(name);
1128         fclose(f);
1129         return ret;
1130 }
1131
1132 static int fill_def_thread(void)
1133 {
1134         memset(&def_thread, 0, sizeof(def_thread));
1135
1136         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1137                 perror("sched_getaffinity");
1138                 return 1;
1139         }
1140
1141         /*
1142          * fill default options
1143          */
1144         fill_default_options(&def_thread, options);
1145
1146         def_thread.timeout = def_timeout;
1147         def_thread.write_bw_log = write_bw_log;
1148         def_thread.write_lat_log = write_lat_log;
1149
1150 #ifdef FIO_HAVE_DISK_UTIL
1151         def_thread.do_disk_util = 1;
1152 #endif
1153
1154         return 0;
1155 }
1156
1157 static void usage(void)
1158 {
1159         printf("%s\n", fio_version_string);
1160         printf("\t--output\tWrite output to file\n");
1161         printf("\t--timeout\tRuntime in seconds\n");
1162         printf("\t--latency-log\tGenerate per-job latency logs\n");
1163         printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1164         printf("\t--minimal\tMinimal (terse) output\n");
1165         printf("\t--version\tPrint version info and exit\n");
1166         printf("\t--help\t\tPrint this page\n");
1167         printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
1168 }
1169
1170 static int parse_cmd_line(int argc, char *argv[])
1171 {
1172         struct thread_data *td = NULL;
1173         int c, ini_idx = 0, lidx, ret;
1174
1175         while ((c = getopt_long(argc, argv, "", long_options, &lidx)) != -1) {
1176                 switch (c) {
1177                 case 't':
1178                         def_timeout = atoi(optarg);
1179                         break;
1180                 case 'l':
1181                         write_lat_log = 1;
1182                         break;
1183                 case 'w':
1184                         write_bw_log = 1;
1185                         break;
1186                 case 'o':
1187                         f_out = fopen(optarg, "w+");
1188                         if (!f_out) {
1189                                 perror("fopen output");
1190                                 exit(1);
1191                         }
1192                         f_err = f_out;
1193                         break;
1194                 case 'm':
1195                         terse_output = 1;
1196                         break;
1197                 case 'h':
1198                         usage();
1199                         exit(0);
1200                 case 'c':
1201                         ret = show_cmd_help(options, optarg);
1202                         exit(ret);
1203                 case 'v':
1204                         printf("%s\n", fio_version_string);
1205                         exit(0);
1206                 case FIO_GETOPT_JOB: {
1207                         const char *opt = long_options[lidx].name;
1208                         char *val = optarg;
1209
1210                         if (!strncmp(opt, "name", 4) && td) {
1211                                 ret = add_job(td, td->name ?: "fio", 0);
1212                                 if (ret) {
1213                                         put_job(td);
1214                                         return 0;
1215                                 }
1216                                 td = NULL;
1217                         }
1218                         if (!td) {
1219                                 int global = !strncmp(val, "global", 6);
1220
1221                                 td = get_new_job(global, &def_thread);
1222                                 if (!td)
1223                                         return 0;
1224                         }
1225
1226                         ret = parse_cmd_option(opt, val, options, td);
1227                         if (ret) {
1228                                 log_err("fio: job dropped\n");
1229                                 put_job(td);
1230                                 td = NULL;
1231                         }
1232                         break;
1233                 }
1234                 default:
1235                         break;
1236                 }
1237         }
1238
1239         if (td) {
1240                 ret = add_job(td, td->name ?: "fio", 0);
1241                 if (ret)
1242                         put_job(td);
1243         }
1244
1245         while (optind < argc) {
1246                 ini_idx++;
1247                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1248                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1249                 optind++;
1250         }
1251
1252         return ini_idx;
1253 }
1254
1255 static void free_shm(void)
1256 {
1257         struct shmid_ds sbuf;
1258
1259         if (threads) {
1260                 shmdt((void *) threads);
1261                 threads = NULL;
1262                 shmctl(shm_id, IPC_RMID, &sbuf);
1263         }
1264 }
1265
1266 /*
1267  * The thread area is shared between the main process and the job
1268  * threads/processes. So setup a shared memory segment that will hold
1269  * all the job info.
1270  */
1271 static int setup_thread_area(void)
1272 {
1273         /*
1274          * 1024 is too much on some machines, scale max_jobs if
1275          * we get a failure that looks like too large a shm segment
1276          */
1277         do {
1278                 size_t size = max_jobs * sizeof(struct thread_data);
1279
1280                 shm_id = shmget(0, size, IPC_CREAT | 0600);
1281                 if (shm_id != -1)
1282                         break;
1283                 if (errno != EINVAL) {
1284                         perror("shmget");
1285                         break;
1286                 }
1287
1288                 max_jobs >>= 1;
1289         } while (max_jobs);
1290
1291         if (shm_id == -1)
1292                 return 1;
1293
1294         threads = shmat(shm_id, NULL, 0);
1295         if (threads == (void *) -1) {
1296                 perror("shmat");
1297                 return 1;
1298         }
1299
1300         atexit(free_shm);
1301         return 0;
1302 }
1303
1304 /*
1305  * Copy the fio options into the long options map, so we mirror
1306  * job and cmd line options.
1307  */
1308 static void dupe_job_options(void)
1309 {
1310         struct fio_option *o;
1311         unsigned int i;
1312
1313         i = 0;
1314         while (long_options[i].name)
1315                 i++;
1316
1317         o = &options[0];
1318         while (o->name) {
1319                 long_options[i].name = o->name;
1320                 long_options[i].val = FIO_GETOPT_JOB;
1321                 if (o->type == FIO_OPT_STR_SET)
1322                         long_options[i].has_arg = no_argument;
1323                 else
1324                         long_options[i].has_arg = required_argument;
1325
1326                 i++;
1327                 o++;
1328                 assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
1329         }
1330 }
1331
1332 int parse_options(int argc, char *argv[])
1333 {
1334         int job_files, i;
1335
1336         f_out = stdout;
1337         f_err = stderr;
1338
1339         options_init(options);
1340
1341         dupe_job_options();
1342
1343         if (setup_thread_area())
1344                 return 1;
1345         if (fill_def_thread())
1346                 return 1;
1347
1348         job_files = parse_cmd_line(argc, argv);
1349
1350         for (i = 0; i < job_files; i++) {
1351                 if (fill_def_thread())
1352                         return 1;
1353                 if (parse_jobs_ini(ini_file[i], i))
1354                         return 1;
1355                 free(ini_file[i]);
1356         }
1357
1358         free(ini_file);
1359
1360         if (!thread_number) {
1361                 log_err("No jobs defined(s)\n");
1362                 return 1;
1363         }
1364
1365         return 0;
1366 }