6878322be349d0ac04c25ea210add8ddffe13e94
[fio.git] / 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 #ifndef FIO_NO_HAVE_SHM_H
13 #include <sys/shm.h>
14 #endif
15 #include <sys/types.h>
16 #include <sys/stat.h>
17
18 #include "fio.h"
19 #include "parse.h"
20 #include "smalloc.h"
21 #include "filehash.h"
22 #include "verify.h"
23 #include "profile.h"
24 #include "server.h"
25
26 #include "lib/getopt.h"
27
28 const char fio_version_string[] = FIO_VERSION;
29
30 #define FIO_RANDSEED            (0xb1899bedUL)
31
32 static char **ini_file;
33 static int max_jobs = FIO_MAX_JOBS;
34 static int dump_cmdline;
35 static int def_timeout;
36
37 static struct thread_data def_thread;
38 struct thread_data *threads = NULL;
39
40 int exitall_on_terminate = 0;
41 int output_format = FIO_OUTPUT_NORMAL;
42 int eta_print;
43 FILE *f_out = NULL;
44 FILE *f_err = NULL;
45 char **job_sections = NULL;
46 int nr_job_sections = 0;
47 char *exec_profile = NULL;
48 int warnings_fatal = 0;
49 int terse_version = 3;
50 int is_backend = 0;
51 int nr_clients = 0;
52 int log_syslog = 0;
53
54 int write_bw_log = 0;
55 int read_only = 0;
56
57 static int write_lat_log;
58
59 static int prev_group_jobs;
60
61 unsigned long fio_debug = 0;
62 unsigned int fio_debug_jobno = -1;
63 unsigned int *fio_debug_jobp = NULL;
64
65 static char cmd_optstr[256];
66 static int did_arg;
67
68 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
69         { .u.f  =  1.00 },
70         { .u.f  =  5.00 },
71         { .u.f  = 10.00 },
72         { .u.f  = 20.00 },
73         { .u.f  = 30.00 },
74         { .u.f  = 40.00 },
75         { .u.f  = 50.00 },
76         { .u.f  = 60.00 },
77         { .u.f  = 70.00 },
78         { .u.f  = 80.00 },
79         { .u.f  = 90.00 },
80         { .u.f  = 95.00 },
81         { .u.f  = 99.00 },
82         { .u.f  = 99.50 },
83         { .u.f  = 99.90 },
84         { .u.f  = 99.95 },
85         { .u.f  = 99.99 },
86 };
87
88 #define FIO_CLIENT_FLAG         (1 << 16)
89
90 /*
91  * Command line options. These will contain the above, plus a few
92  * extra that only pertain to fio itself and not jobs.
93  */
94 static struct option l_opts[FIO_NR_OPTIONS] = {
95         {
96                 .name           = (char *) "output",
97                 .has_arg        = required_argument,
98                 .val            = 'o' | FIO_CLIENT_FLAG,
99         },
100         {
101                 .name           = (char *) "timeout",
102                 .has_arg        = required_argument,
103                 .val            = 't' | FIO_CLIENT_FLAG,
104         },
105         {
106                 .name           = (char *) "latency-log",
107                 .has_arg        = required_argument,
108                 .val            = 'l' | FIO_CLIENT_FLAG,
109         },
110         {
111                 .name           = (char *) "bandwidth-log",
112                 .has_arg        = required_argument,
113                 .val            = 'b' | FIO_CLIENT_FLAG,
114         },
115         {
116                 .name           = (char *) "minimal",
117                 .has_arg        = optional_argument,
118                 .val            = 'm' | FIO_CLIENT_FLAG,
119         },
120         {
121                 .name           = (char *) "output-format",
122                 .has_arg        = optional_argument,
123                 .val            = 'F' | FIO_CLIENT_FLAG,
124         },
125         {
126                 .name           = (char *) "version",
127                 .has_arg        = no_argument,
128                 .val            = 'v' | FIO_CLIENT_FLAG,
129         },
130         {
131                 .name           = (char *) "help",
132                 .has_arg        = no_argument,
133                 .val            = 'h' | FIO_CLIENT_FLAG,
134         },
135         {
136                 .name           = (char *) "cmdhelp",
137                 .has_arg        = optional_argument,
138                 .val            = 'c' | FIO_CLIENT_FLAG,
139         },
140         {
141                 .name              = (char *) "enghelp",
142                 .has_arg        = optional_argument,
143                 .val                = 'i' | FIO_CLIENT_FLAG,
144         },
145         {
146                 .name           = (char *) "showcmd",
147                 .has_arg        = no_argument,
148                 .val            = 's' | FIO_CLIENT_FLAG,
149         },
150         {
151                 .name           = (char *) "readonly",
152                 .has_arg        = no_argument,
153                 .val            = 'r' | FIO_CLIENT_FLAG,
154         },
155         {
156                 .name           = (char *) "eta",
157                 .has_arg        = required_argument,
158                 .val            = 'e' | FIO_CLIENT_FLAG,
159         },
160         {
161                 .name           = (char *) "debug",
162                 .has_arg        = required_argument,
163                 .val            = 'd' | FIO_CLIENT_FLAG,
164         },
165         {
166                 .name           = (char *) "section",
167                 .has_arg        = required_argument,
168                 .val            = 'x' | FIO_CLIENT_FLAG,
169         },
170         {
171                 .name           = (char *) "alloc-size",
172                 .has_arg        = required_argument,
173                 .val            = 'a' | FIO_CLIENT_FLAG,
174         },
175         {
176                 .name           = (char *) "profile",
177                 .has_arg        = required_argument,
178                 .val            = 'p' | FIO_CLIENT_FLAG,
179         },
180         {
181                 .name           = (char *) "warnings-fatal",
182                 .has_arg        = no_argument,
183                 .val            = 'w' | FIO_CLIENT_FLAG,
184         },
185         {
186                 .name           = (char *) "max-jobs",
187                 .has_arg        = required_argument,
188                 .val            = 'j' | FIO_CLIENT_FLAG,
189         },
190         {
191                 .name           = (char *) "terse-version",
192                 .has_arg        = required_argument,
193                 .val            = 'V' | FIO_CLIENT_FLAG,
194         },
195         {
196                 .name           = (char *) "server",
197                 .has_arg        = optional_argument,
198                 .val            = 'S',
199         },
200         {       .name           = (char *) "daemonize",
201                 .has_arg        = required_argument,
202                 .val            = 'D',
203         },
204         {
205                 .name           = (char *) "client",
206                 .has_arg        = required_argument,
207                 .val            = 'C',
208         },
209         {
210                 .name           = NULL,
211         },
212 };
213
214 void free_threads_shm(void)
215 {
216         struct shmid_ds sbuf;
217
218         if (threads) {
219                 void *tp = threads;
220
221                 threads = NULL;
222                 shmdt(tp);
223                 shmctl(shm_id, IPC_RMID, &sbuf);
224                 shm_id = -1;
225         }
226 }
227
228 void free_shm(void)
229 {
230         if (threads) {
231                 file_hash_exit();
232                 flow_exit();
233                 fio_debug_jobp = NULL;
234                 free_threads_shm();
235         }
236
237         scleanup();
238 }
239
240 /*
241  * The thread area is shared between the main process and the job
242  * threads/processes. So setup a shared memory segment that will hold
243  * all the job info. We use the end of the region for keeping track of
244  * open files across jobs, for file sharing.
245  */
246 static int setup_thread_area(void)
247 {
248         void *hash;
249
250         if (threads)
251                 return 0;
252
253         /*
254          * 1024 is too much on some machines, scale max_jobs if
255          * we get a failure that looks like too large a shm segment
256          */
257         do {
258                 size_t size = max_jobs * sizeof(struct thread_data);
259
260                 size += file_hash_size;
261                 size += sizeof(unsigned int);
262
263                 shm_id = shmget(0, size, IPC_CREAT | 0600);
264                 if (shm_id != -1)
265                         break;
266                 if (errno != EINVAL && errno != ENOMEM && errno != ENOSPC) {
267                         perror("shmget");
268                         break;
269                 }
270
271                 max_jobs >>= 1;
272         } while (max_jobs);
273
274         if (shm_id == -1)
275                 return 1;
276
277         threads = shmat(shm_id, NULL, 0);
278         if (threads == (void *) -1) {
279                 perror("shmat");
280                 return 1;
281         }
282
283         memset(threads, 0, max_jobs * sizeof(struct thread_data));
284         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
285         fio_debug_jobp = (void *) hash + file_hash_size;
286         *fio_debug_jobp = -1;
287         file_hash_init(hash);
288
289         flow_init();
290
291         return 0;
292 }
293
294 /*
295  * Return a free job structure.
296  */
297 static struct thread_data *get_new_job(int global, struct thread_data *parent,
298                                        int preserve_eo)
299 {
300         struct thread_data *td;
301
302         if (global)
303                 return &def_thread;
304         if (setup_thread_area()) {
305                 log_err("error: failed to setup shm segment\n");
306                 return NULL;
307         }
308         if (thread_number >= max_jobs) {
309                 log_err("error: maximum number of jobs (%d) reached.\n",
310                                 max_jobs);
311                 return NULL;
312         }
313
314         td = &threads[thread_number++];
315         *td = *parent;
316
317         td->io_ops = NULL;
318         if (!preserve_eo)
319                 td->eo = NULL;
320
321         td->o.uid = td->o.gid = -1U;
322
323         dup_files(td, parent);
324         fio_options_mem_dupe(td);
325
326         profile_add_hooks(td);
327
328         td->thread_number = thread_number;
329
330         if (!parent || !parent->o.group_reporting)
331                 stat_number++;
332
333         return td;
334 }
335
336 static void put_job(struct thread_data *td)
337 {
338         if (td == &def_thread)
339                 return;
340
341         profile_td_exit(td);
342         flow_exit_job(td);
343
344         if (td->error)
345                 log_info("fio: %s\n", td->verror);
346
347         fio_options_free(td);
348         if (td->io_ops)
349                 free_ioengine(td);
350
351         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
352         thread_number--;
353 }
354
355 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
356 {
357         unsigned int bs = td->o.min_bs[ddir];
358
359         assert(ddir_rw(ddir));
360
361         if (td->o.rate[ddir])
362                 td->rate_bps[ddir] = td->o.rate[ddir];
363         else
364                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
365
366         if (!td->rate_bps[ddir]) {
367                 log_err("rate lower than supported\n");
368                 return -1;
369         }
370
371         td->rate_pending_usleep[ddir] = 0;
372         return 0;
373 }
374
375 static int setup_rate(struct thread_data *td)
376 {
377         int ret = 0;
378
379         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
380                 ret = __setup_rate(td, DDIR_READ);
381         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
382                 ret |= __setup_rate(td, DDIR_WRITE);
383         if (td->o.rate[DDIR_TRIM] || td->o.rate_iops[DDIR_TRIM])
384                 ret |= __setup_rate(td, DDIR_TRIM);
385
386         return ret;
387 }
388
389 static int fixed_block_size(struct thread_options *o)
390 {
391         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
392                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
393                 o->min_bs[DDIR_TRIM] == o->max_bs[DDIR_TRIM] &&
394                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE] &&
395                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_TRIM];
396 }
397
398 /*
399  * Lazy way of fixing up options that depend on each other. We could also
400  * define option callback handlers, but this is easier.
401  */
402 static int fixup_options(struct thread_data *td)
403 {
404         struct thread_options *o = &td->o;
405         int ret = 0;
406
407 #ifndef FIO_HAVE_PSHARED_MUTEX
408         if (!o->use_thread) {
409                 log_info("fio: this platform does not support process shared"
410                          " mutexes, forcing use of threads. Use the 'thread'"
411                          " option to get rid of this warning.\n");
412                 o->use_thread = 1;
413                 ret = warnings_fatal;
414         }
415 #endif
416
417         if (o->write_iolog_file && o->read_iolog_file) {
418                 log_err("fio: read iolog overrides write_iolog\n");
419                 free(o->write_iolog_file);
420                 o->write_iolog_file = NULL;
421                 ret = warnings_fatal;
422         }
423
424         /*
425          * only really works with 1 file
426          */
427         if (o->zone_size && o->open_files == 1)
428                 o->zone_size = 0;
429
430         /*
431          * If zone_range isn't specified, backward compatibility dictates it
432          * should be made equal to zone_size.
433          */
434         if (o->zone_size && !o->zone_range)
435                 o->zone_range = o->zone_size;
436
437         /*
438          * Reads can do overwrites, we always need to pre-create the file
439          */
440         if (td_read(td) || td_rw(td))
441                 o->overwrite = 1;
442
443         if (!o->min_bs[DDIR_READ])
444                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
445         if (!o->max_bs[DDIR_READ])
446                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
447         if (!o->min_bs[DDIR_WRITE])
448                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
449         if (!o->max_bs[DDIR_WRITE])
450                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
451         if (!o->min_bs[DDIR_TRIM])
452                 o->min_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
453         if (!o->max_bs[DDIR_TRIM])
454                 o->max_bs[DDIR_TRIM] = o->bs[DDIR_TRIM];
455
456
457         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
458         o->rw_min_bs = min(o->min_bs[DDIR_TRIM], o->rw_min_bs);
459
460         /*
461          * For random IO, allow blockalign offset other than min_bs.
462          */
463         if (!o->ba[DDIR_READ] || !td_random(td))
464                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
465         if (!o->ba[DDIR_WRITE] || !td_random(td))
466                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
467         if (!o->ba[DDIR_TRIM] || !td_random(td))
468                 o->ba[DDIR_TRIM] = o->min_bs[DDIR_TRIM];
469
470         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
471             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE] ||
472             o->ba[DDIR_TRIM] != o->min_bs[DDIR_TRIM]) &&
473             !o->norandommap) {
474                 log_err("fio: Any use of blockalign= turns off randommap\n");
475                 o->norandommap = 1;
476                 ret = warnings_fatal;
477         }
478
479         if (!o->file_size_high)
480                 o->file_size_high = o->file_size_low;
481
482         if (o->norandommap && o->verify != VERIFY_NONE
483             && !fixed_block_size(o))  {
484                 log_err("fio: norandommap given for variable block sizes, "
485                         "verify disabled\n");
486                 o->verify = VERIFY_NONE;
487                 ret = warnings_fatal;
488         }
489         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
490                 log_err("fio: bs_unaligned may not work with raw io\n");
491
492         /*
493          * thinktime_spin must be less than thinktime
494          */
495         if (o->thinktime_spin > o->thinktime)
496                 o->thinktime_spin = o->thinktime;
497
498         /*
499          * The low water mark cannot be bigger than the iodepth
500          */
501         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
502                 /*
503                  * syslet work around - if the workload is sequential,
504                  * we want to let the queue drain all the way down to
505                  * avoid seeking between async threads
506                  */
507                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
508                         o->iodepth_low = 1;
509                 else
510                         o->iodepth_low = o->iodepth;
511         }
512
513         /*
514          * If batch number isn't set, default to the same as iodepth
515          */
516         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
517                 o->iodepth_batch = o->iodepth;
518
519         if (o->nr_files > td->files_index)
520                 o->nr_files = td->files_index;
521
522         if (o->open_files > o->nr_files || !o->open_files)
523                 o->open_files = o->nr_files;
524
525         if (((o->rate[DDIR_READ] + o->rate[DDIR_WRITE] + o->rate[DDIR_TRIM]) &&
526             (o->rate_iops[DDIR_READ] + o->rate_iops[DDIR_WRITE] + o->rate_iops[DDIR_TRIM])) ||
527             ((o->ratemin[DDIR_READ] + o->ratemin[DDIR_WRITE] + o->ratemin[DDIR_TRIM]) &&
528             (o->rate_iops_min[DDIR_READ] + o->rate_iops_min[DDIR_WRITE] + o->rate_iops_min[DDIR_TRIM]))) {
529                 log_err("fio: rate and rate_iops are mutually exclusive\n");
530                 ret = 1;
531         }
532         if ((o->rate[DDIR_READ] < o->ratemin[DDIR_READ]) ||
533             (o->rate[DDIR_WRITE] < o->ratemin[DDIR_WRITE]) ||
534             (o->rate[DDIR_TRIM] < o->ratemin[DDIR_TRIM]) ||
535             (o->rate_iops[DDIR_READ] < o->rate_iops_min[DDIR_READ]) ||
536             (o->rate_iops[DDIR_WRITE] < o->rate_iops_min[DDIR_WRITE]) ||
537             (o->rate_iops[DDIR_TRIM] < o->rate_iops_min[DDIR_TRIM])) {
538                 log_err("fio: minimum rate exceeds rate\n");
539                 ret = 1;
540         }
541
542         if (!o->timeout && o->time_based) {
543                 log_err("fio: time_based requires a runtime/timeout setting\n");
544                 o->time_based = 0;
545                 ret = warnings_fatal;
546         }
547
548         if (o->fill_device && !o->size)
549                 o->size = -1ULL;
550
551         if (o->verify != VERIFY_NONE) {
552                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
553                         log_info("Multiple writers may overwrite blocks that "
554                                 "belong to other jobs. This can cause "
555                                 "verification failures.\n");
556                         ret = warnings_fatal;
557                 }
558
559                 o->refill_buffers = 1;
560                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
561                     !o->verify_interval)
562                         o->verify_interval = o->min_bs[DDIR_WRITE];
563         }
564
565         if (o->pre_read) {
566                 o->invalidate_cache = 0;
567                 if (td->io_ops->flags & FIO_PIPEIO) {
568                         log_info("fio: cannot pre-read files with an IO engine"
569                                  " that isn't seekable. Pre-read disabled.\n");
570                         ret = warnings_fatal;
571                 }
572         }
573
574 #ifndef FIO_HAVE_FDATASYNC
575         if (o->fdatasync_blocks) {
576                 log_info("fio: this platform does not support fdatasync()"
577                          " falling back to using fsync().  Use the 'fsync'"
578                          " option instead of 'fdatasync' to get rid of"
579                          " this warning\n");
580                 o->fsync_blocks = o->fdatasync_blocks;
581                 o->fdatasync_blocks = 0;
582                 ret = warnings_fatal;
583         }
584 #endif
585
586 #ifdef WIN32
587         /*
588          * Windows doesn't support O_DIRECT or O_SYNC with the _open interface,
589          * so fail if we're passed those flags
590          */
591         if ((td->io_ops->flags & FIO_SYNCIO) && (td->o.odirect || td->o.sync_io)) {
592                 log_err("fio: Windows does not support direct or non-buffered io with"
593                                 " the synchronous ioengines. Use the 'windowsaio' ioengine"
594                                 " with 'direct=1' and 'iodepth=1' instead.\n");
595                 ret = 1;
596         }
597 #endif
598
599         /*
600          * For fully compressible data, just zero them at init time.
601          * It's faster than repeatedly filling it.
602          */
603         if (td->o.compress_percentage == 100) {
604                 td->o.zero_buffers = 1;
605                 td->o.compress_percentage = 0;
606         }
607
608         /*
609          * Using a non-uniform random distribution excludes usage of
610          * a random map
611          */
612         if (td->o.random_distribution != FIO_RAND_DIST_RANDOM)
613                 td->o.norandommap = 1;
614
615         return ret;
616 }
617
618 /*
619  * This function leaks the buffer
620  */
621 char *fio_uint_to_kmg(unsigned int val)
622 {
623         char *buf = malloc(32);
624         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
625         char *p = post;
626
627         do {
628                 if (val & 1023)
629                         break;
630
631                 val >>= 10;
632                 p++;
633         } while (*p);
634
635         snprintf(buf, 31, "%u%c", val, *p);
636         return buf;
637 }
638
639 /* External engines are specified by "external:name.o") */
640 static const char *get_engine_name(const char *str)
641 {
642         char *p = strstr(str, ":");
643
644         if (!p)
645                 return str;
646
647         p++;
648         strip_blank_front(&p);
649         strip_blank_end(p);
650         return p;
651 }
652
653 static int exists_and_not_file(const char *filename)
654 {
655         struct stat sb;
656
657         if (lstat(filename, &sb) == -1)
658                 return 0;
659
660         /* \\.\ is the device namespace in Windows, where every file
661          * is a device node */
662         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
663                 return 0;
664
665         return 1;
666 }
667
668 static void td_fill_rand_seeds_os(struct thread_data *td)
669 {
670         os_random_seed(td->rand_seeds[FIO_RAND_BS_OFF], &td->bsrange_state);
671         os_random_seed(td->rand_seeds[FIO_RAND_VER_OFF], &td->verify_state);
672         os_random_seed(td->rand_seeds[FIO_RAND_MIX_OFF], &td->rwmix_state);
673
674         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
675                 os_random_seed(td->rand_seeds[FIO_RAND_FILE_OFF], &td->next_file_state);
676
677         os_random_seed(td->rand_seeds[FIO_RAND_FILE_SIZE_OFF], &td->file_size_state);
678         os_random_seed(td->rand_seeds[FIO_RAND_TRIM_OFF], &td->trim_state);
679
680         if (!td_random(td))
681                 return;
682
683         if (td->o.rand_repeatable)
684                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
685
686         os_random_seed(td->rand_seeds[FIO_RAND_BLOCK_OFF], &td->random_state);
687 }
688
689 static void td_fill_rand_seeds_internal(struct thread_data *td)
690 {
691         init_rand_seed(&td->__bsrange_state, td->rand_seeds[FIO_RAND_BS_OFF]);
692         init_rand_seed(&td->__verify_state, td->rand_seeds[FIO_RAND_VER_OFF]);
693         init_rand_seed(&td->__rwmix_state, td->rand_seeds[FIO_RAND_MIX_OFF]);
694
695         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
696                 init_rand_seed(&td->__next_file_state, td->rand_seeds[FIO_RAND_FILE_OFF]);
697
698         init_rand_seed(&td->__file_size_state, td->rand_seeds[FIO_RAND_FILE_SIZE_OFF]);
699         init_rand_seed(&td->__trim_state, td->rand_seeds[FIO_RAND_TRIM_OFF]);
700
701         if (!td_random(td))
702                 return;
703
704         if (td->o.rand_repeatable)
705                 td->rand_seeds[FIO_RAND_BLOCK_OFF] = FIO_RANDSEED * td->thread_number;
706
707         init_rand_seed(&td->__random_state, td->rand_seeds[FIO_RAND_BLOCK_OFF]);
708 }
709
710 void td_fill_rand_seeds(struct thread_data *td)
711 {
712         if (td->o.use_os_rand)
713                 td_fill_rand_seeds_os(td);
714         else
715                 td_fill_rand_seeds_internal(td);
716
717         init_rand_seed(&td->buf_state, td->rand_seeds[FIO_RAND_BUF_OFF]);
718 }
719
720
721 /*
722  * Initializes the ioengine configured for a job, if it has not been done so
723  * already.
724  */
725 int ioengine_load(struct thread_data *td)
726 {
727         const char *engine;
728
729         /*
730          * Engine has already been loaded.
731          */
732         if (td->io_ops)
733                 return 0;
734
735         engine = get_engine_name(td->o.ioengine);
736         td->io_ops = load_ioengine(td, engine);
737         if (!td->io_ops) {
738                 log_err("fio: failed to load engine %s\n", engine);
739                 return 1;
740         }
741
742         if (td->io_ops->option_struct_size && td->io_ops->options) {
743                 /*
744                  * In cases where td->eo is set, clone it for a child thread.
745                  * This requires that the parent thread has the same ioengine,
746                  * but that requirement must be enforced by the code which
747                  * cloned the thread.
748                  */
749                 void *origeo = td->eo;
750                 /*
751                  * Otherwise use the default thread options.
752                  */
753                 if (!origeo && td != &def_thread && def_thread.eo &&
754                     def_thread.io_ops->options == td->io_ops->options)
755                         origeo = def_thread.eo;
756
757                 options_init(td->io_ops->options);
758                 td->eo = malloc(td->io_ops->option_struct_size);
759                 /*
760                  * Use the default thread as an option template if this uses the
761                  * same options structure and there are non-default options
762                  * used.
763                  */
764                 if (origeo) {
765                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
766                         options_mem_dupe(td->eo, td->io_ops->options);
767                 } else {
768                         memset(td->eo, 0, td->io_ops->option_struct_size);
769                         fill_default_options(td->eo, td->io_ops->options);
770                 }
771                 *(struct thread_data **)td->eo = td;
772         }
773
774         return 0;
775 }
776
777 static void init_flags(struct thread_data *td)
778 {
779         struct thread_options *o = &td->o;
780
781         if (o->verify_backlog)
782                 td->flags |= TD_F_VER_BACKLOG;
783         if (o->trim_backlog)
784                 td->flags |= TD_F_TRIM_BACKLOG;
785         if (o->read_iolog_file)
786                 td->flags |= TD_F_READ_IOLOG;
787         if (o->refill_buffers)
788                 td->flags |= TD_F_REFILL_BUFFERS;
789         if (o->scramble_buffers)
790                 td->flags |= TD_F_SCRAMBLE_BUFFERS;
791         if (o->verify != VERIFY_NONE)
792                 td->flags |= TD_F_VER_NONE;
793 }
794
795 /*
796  * Adds a job to the list of things todo. Sanitizes the various options
797  * to make sure we don't have conflicts, and initializes various
798  * members of td.
799  */
800 static int add_job(struct thread_data *td, const char *jobname, int job_add_num,
801                    int recursed, int client_type)
802 {
803         unsigned int i;
804         char fname[PATH_MAX];
805         int numjobs, file_alloced;
806
807         /*
808          * the def_thread is just for options, it's not a real job
809          */
810         if (td == &def_thread)
811                 return 0;
812
813         init_flags(td);
814
815         /*
816          * if we are just dumping the output command line, don't add the job
817          */
818         if (dump_cmdline) {
819                 put_job(td);
820                 return 0;
821         }
822
823         td->client_type = client_type;
824
825         if (profile_td_init(td))
826                 goto err;
827
828         if (ioengine_load(td))
829                 goto err;
830
831         if (td->o.odirect)
832                 td->io_ops->flags |= FIO_RAWIO;
833
834         file_alloced = 0;
835         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
836                 file_alloced = 1;
837
838                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
839                         add_file(td, jobname);
840                 else {
841                         for (i = 0; i < td->o.nr_files; i++) {
842                                 sprintf(fname, "%s.%d.%d", jobname,
843                                                         td->thread_number, i);
844                                 add_file(td, fname);
845                         }
846                 }
847         }
848
849         if (fixup_options(td))
850                 goto err;
851
852         flow_init_job(td);
853
854         /*
855          * IO engines only need this for option callbacks, and the address may
856          * change in subprocesses.
857          */
858         if (td->eo)
859                 *(struct thread_data **)td->eo = NULL;
860
861         if (td->io_ops->flags & FIO_DISKLESSIO) {
862                 struct fio_file *f;
863
864                 for_each_file(td, f, i)
865                         f->real_file_size = -1ULL;
866         }
867
868         td->mutex = fio_mutex_init(FIO_MUTEX_LOCKED);
869
870         td->ts.clat_percentiles = td->o.clat_percentiles;
871         if (td->o.overwrite_plist)
872                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
873         else
874                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
875
876         for (i = 0; i < DDIR_RWDIR_CNT; i++) {
877                 td->ts.clat_stat[i].min_val = ULONG_MAX;
878                 td->ts.slat_stat[i].min_val = ULONG_MAX;
879                 td->ts.lat_stat[i].min_val = ULONG_MAX;
880                 td->ts.bw_stat[i].min_val = ULONG_MAX;
881         }
882         td->ddir_seq_nr = td->o.ddir_seq_nr;
883
884         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
885                 prev_group_jobs = 0;
886                 groupid++;
887         }
888
889         td->groupid = groupid;
890         prev_group_jobs++;
891
892         if (init_random_state(td, td->rand_seeds, sizeof(td->rand_seeds))) {
893                 td_verror(td, errno, "init_random_state");
894                 goto err;
895         }
896
897         if (setup_rate(td))
898                 goto err;
899
900         if (td->o.lat_log_file) {
901                 setup_log(&td->lat_log, td->o.log_avg_msec, IO_LOG_TYPE_LAT);
902                 setup_log(&td->slat_log, td->o.log_avg_msec, IO_LOG_TYPE_SLAT);
903                 setup_log(&td->clat_log, td->o.log_avg_msec, IO_LOG_TYPE_CLAT);
904         }
905         if (td->o.bw_log_file)
906                 setup_log(&td->bw_log, td->o.log_avg_msec, IO_LOG_TYPE_BW);
907         if (td->o.iops_log_file)
908                 setup_log(&td->iops_log, td->o.log_avg_msec, IO_LOG_TYPE_IOPS);
909
910         if (!td->o.name)
911                 td->o.name = strdup(jobname);
912
913         if (output_format == FIO_OUTPUT_NORMAL) {
914                 if (!job_add_num) {
915                         if (is_backend && !recursed)
916                                 fio_server_send_add_job(td);
917
918                         if (!(td->io_ops->flags & FIO_NOIO)) {
919                                 char *c1, *c2, *c3, *c4, *c5, *c6;
920
921                                 c1 = fio_uint_to_kmg(td->o.min_bs[DDIR_READ]);
922                                 c2 = fio_uint_to_kmg(td->o.max_bs[DDIR_READ]);
923                                 c3 = fio_uint_to_kmg(td->o.min_bs[DDIR_WRITE]);
924                                 c4 = fio_uint_to_kmg(td->o.max_bs[DDIR_WRITE]);
925                                 c5 = fio_uint_to_kmg(td->o.min_bs[DDIR_TRIM]);
926                                 c6 = fio_uint_to_kmg(td->o.max_bs[DDIR_TRIM]);
927
928                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s/%s-%s,"
929                                          " ioengine=%s, iodepth=%u\n",
930                                                 td->o.name, td->groupid,
931                                                 ddir_str(td->o.td_ddir),
932                                                 c1, c2, c3, c4, c5, c6,
933                                                 td->io_ops->name,
934                                                 td->o.iodepth);
935
936                                 free(c1);
937                                 free(c2);
938                                 free(c3);
939                                 free(c4);
940                                 free(c5);
941                                 free(c6);
942                         }
943                 } else if (job_add_num == 1)
944                         log_info("...\n");
945         }
946
947         /*
948          * recurse add identical jobs, clear numjobs and stonewall options
949          * as they don't apply to sub-jobs
950          */
951         numjobs = td->o.numjobs;
952         while (--numjobs) {
953                 struct thread_data *td_new = get_new_job(0, td, 1);
954
955                 if (!td_new)
956                         goto err;
957
958                 td_new->o.numjobs = 1;
959                 td_new->o.stonewall = 0;
960                 td_new->o.new_group = 0;
961
962                 if (file_alloced) {
963                         td_new->o.filename = NULL;
964                         td_new->files_index = 0;
965                         td_new->files_size = 0;
966                         td_new->files = NULL;
967                 }
968
969                 job_add_num = numjobs - 1;
970
971                 if (add_job(td_new, jobname, job_add_num, 1, client_type))
972                         goto err;
973         }
974
975         return 0;
976 err:
977         put_job(td);
978         return -1;
979 }
980
981 /*
982  * Parse as if 'o' was a command line
983  */
984 void add_job_opts(const char **o, int client_type)
985 {
986         struct thread_data *td, *td_parent;
987         int i, in_global = 1;
988         char jobname[32];
989
990         i = 0;
991         td_parent = td = NULL;
992         while (o[i]) {
993                 if (!strncmp(o[i], "name", 4)) {
994                         in_global = 0;
995                         if (td)
996                                 add_job(td, jobname, 0, 0, client_type);
997                         td = NULL;
998                         sprintf(jobname, "%s", o[i] + 5);
999                 }
1000                 if (in_global && !td_parent)
1001                         td_parent = get_new_job(1, &def_thread, 0);
1002                 else if (!in_global && !td) {
1003                         if (!td_parent)
1004                                 td_parent = &def_thread;
1005                         td = get_new_job(0, td_parent, 0);
1006                 }
1007                 if (in_global)
1008                         fio_options_parse(td_parent, (char **) &o[i], 1);
1009                 else
1010                         fio_options_parse(td, (char **) &o[i], 1);
1011                 i++;
1012         }
1013
1014         if (td)
1015                 add_job(td, jobname, 0, 0, client_type);
1016 }
1017
1018 static int skip_this_section(const char *name)
1019 {
1020         int i;
1021
1022         if (!nr_job_sections)
1023                 return 0;
1024         if (!strncmp(name, "global", 6))
1025                 return 0;
1026
1027         for (i = 0; i < nr_job_sections; i++)
1028                 if (!strcmp(job_sections[i], name))
1029                         return 0;
1030
1031         return 1;
1032 }
1033
1034 static int is_empty_or_comment(char *line)
1035 {
1036         unsigned int i;
1037
1038         for (i = 0; i < strlen(line); i++) {
1039                 if (line[i] == ';')
1040                         return 1;
1041                 if (line[i] == '#')
1042                         return 1;
1043                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
1044                         return 0;
1045         }
1046
1047         return 1;
1048 }
1049
1050 /*
1051  * This is our [ini] type file parser.
1052  */
1053 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag, int type)
1054 {
1055         unsigned int global;
1056         struct thread_data *td;
1057         char *string, *name;
1058         FILE *f;
1059         char *p;
1060         int ret = 0, stonewall;
1061         int first_sect = 1;
1062         int skip_fgets = 0;
1063         int inside_skip = 0;
1064         char **opts;
1065         int i, alloc_opts, num_opts;
1066
1067         if (is_buf)
1068                 f = NULL;
1069         else {
1070                 if (!strcmp(file, "-"))
1071                         f = stdin;
1072                 else
1073                         f = fopen(file, "r");
1074
1075                 if (!f) {
1076                         perror("fopen job file");
1077                         return 1;
1078                 }
1079         }
1080
1081         string = malloc(4096);
1082
1083         /*
1084          * it's really 256 + small bit, 280 should suffice
1085          */
1086         name = malloc(280);
1087         memset(name, 0, 280);
1088
1089         alloc_opts = 8;
1090         opts = malloc(sizeof(char *) * alloc_opts);
1091         num_opts = 0;
1092
1093         stonewall = stonewall_flag;
1094         do {
1095                 /*
1096                  * if skip_fgets is set, we already have loaded a line we
1097                  * haven't handled.
1098                  */
1099                 if (!skip_fgets) {
1100                         if (is_buf)
1101                                 p = strsep(&file, "\n");
1102                         else
1103                                 p = fgets(string, 4096, f);
1104                         if (!p)
1105                                 break;
1106                 }
1107
1108                 skip_fgets = 0;
1109                 strip_blank_front(&p);
1110                 strip_blank_end(p);
1111
1112                 if (is_empty_or_comment(p))
1113                         continue;
1114                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1115                         if (inside_skip)
1116                                 continue;
1117                         log_err("fio: option <%s> outside of [] job section\n",
1118                                                                         p);
1119                         break;
1120                 }
1121
1122                 name[strlen(name) - 1] = '\0';
1123
1124                 if (skip_this_section(name)) {
1125                         inside_skip = 1;
1126                         continue;
1127                 } else
1128                         inside_skip = 0;
1129
1130                 global = !strncmp(name, "global", 6);
1131
1132                 if (dump_cmdline) {
1133                         if (first_sect)
1134                                 log_info("fio ");
1135                         if (!global)
1136                                 log_info("--name=%s ", name);
1137                         first_sect = 0;
1138                 }
1139
1140                 td = get_new_job(global, &def_thread, 0);
1141                 if (!td) {
1142                         ret = 1;
1143                         break;
1144                 }
1145
1146                 /*
1147                  * Seperate multiple job files by a stonewall
1148                  */
1149                 if (!global && stonewall) {
1150                         td->o.stonewall = stonewall;
1151                         stonewall = 0;
1152                 }
1153
1154                 num_opts = 0;
1155                 memset(opts, 0, alloc_opts * sizeof(char *));
1156
1157                 while (1) {
1158                         if (is_buf)
1159                                 p = strsep(&file, "\n");
1160                         else
1161                                 p = fgets(string, 4096, f);
1162                         if (!p)
1163                                 break;
1164
1165                         if (is_empty_or_comment(p))
1166                                 continue;
1167
1168                         strip_blank_front(&p);
1169
1170                         /*
1171                          * new section, break out and make sure we don't
1172                          * fgets() a new line at the top.
1173                          */
1174                         if (p[0] == '[') {
1175                                 skip_fgets = 1;
1176                                 break;
1177                         }
1178
1179                         strip_blank_end(p);
1180
1181                         if (num_opts == alloc_opts) {
1182                                 alloc_opts <<= 1;
1183                                 opts = realloc(opts,
1184                                                 alloc_opts * sizeof(char *));
1185                         }
1186
1187                         opts[num_opts] = strdup(p);
1188                         num_opts++;
1189                 }
1190
1191                 ret = fio_options_parse(td, opts, num_opts);
1192                 if (!ret) {
1193                         if (dump_cmdline)
1194                                 for (i = 0; i < num_opts; i++)
1195                                         log_info("--%s ", opts[i]);
1196
1197                         ret = add_job(td, name, 0, 0, type);
1198                 } else {
1199                         log_err("fio: job %s dropped\n", name);
1200                         put_job(td);
1201                 }
1202
1203                 for (i = 0; i < num_opts; i++)
1204                         free(opts[i]);
1205                 num_opts = 0;
1206         } while (!ret);
1207
1208         if (dump_cmdline)
1209                 log_info("\n");
1210
1211         i = 0;
1212         while (i < nr_job_sections) {
1213                 free(job_sections[i]);
1214                 i++;
1215         }
1216
1217         for (i = 0; i < num_opts; i++)
1218                 free(opts[i]);
1219
1220         free(string);
1221         free(name);
1222         free(opts);
1223         if (!is_buf && f != stdin)
1224                 fclose(f);
1225         return ret;
1226 }
1227
1228 static int fill_def_thread(void)
1229 {
1230         memset(&def_thread, 0, sizeof(def_thread));
1231
1232         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1233         def_thread.o.timeout = def_timeout;
1234         def_thread.o.error_dump = 1;
1235         /*
1236          * fill default options
1237          */
1238         fio_fill_default_options(&def_thread);
1239         return 0;
1240 }
1241
1242 static void usage(const char *name)
1243 {
1244         printf("%s\n", fio_version_string);
1245         printf("%s [options] [job options] <job file(s)>\n", name);
1246         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1247                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1248                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1249         printf("  --output\t\tWrite output to file\n");
1250         printf("  --runtime\t\tRuntime in seconds\n");
1251         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1252         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1253         printf("  --minimal\t\tMinimal (terse) output\n");
1254         printf("  --output-format=x\tOutput format (terse,json,normal)\n");
1255         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1256         printf("  --version\t\tPrint version info and exit\n");
1257         printf("  --help\t\tPrint this page\n");
1258         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1259                 " them\n");
1260         printf("  --enghelp=engine\tPrint ioengine help, or list"
1261                 " available ioengines\n");
1262         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1263                 " cmd\n");
1264         printf("  --showcmd\t\tTurn a job file into command line options\n");
1265         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1266         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1267         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1268                 " writes\n");
1269         printf("  --section=name\tOnly run specified section in job file\n");
1270         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1271                 " (def 1024)\n");
1272         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1273         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1274         printf("  --server=args\t\tStart a backend fio server\n");
1275         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1276         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1277         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1278         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1279 }
1280
1281 #ifdef FIO_INC_DEBUG
1282 struct debug_level debug_levels[] = {
1283         { .name = "process",
1284           .help = "Process creation/exit logging",
1285           .shift = FD_PROCESS,
1286         },
1287         { .name = "file",
1288           .help = "File related action logging",
1289           .shift = FD_FILE,
1290         },
1291         { .name = "io",
1292           .help = "IO and IO engine action logging (offsets, queue, completions, etc)",
1293           .shift = FD_IO,
1294         },
1295         { .name = "mem",
1296           .help = "Memory allocation/freeing logging",
1297           .shift = FD_MEM,
1298         },
1299         { .name = "blktrace",
1300           .help = "blktrace action logging",
1301           .shift = FD_BLKTRACE,
1302         },
1303         { .name = "verify",
1304           .help = "IO verification action logging",
1305           .shift = FD_VERIFY,
1306         },
1307         { .name = "random",
1308           .help = "Random generation logging",
1309           .shift = FD_RANDOM,
1310         },
1311         { .name = "parse",
1312           .help = "Parser logging",
1313           .shift = FD_PARSE,
1314         },
1315         { .name = "diskutil",
1316           .help = "Disk utility logging actions",
1317           .shift = FD_DISKUTIL,
1318         },
1319         { .name = "job",
1320           .help = "Logging related to creating/destroying jobs",
1321           .shift = FD_JOB,
1322         },
1323         { .name = "mutex",
1324           .help = "Mutex logging",
1325           .shift = FD_MUTEX
1326         },
1327         { .name = "profile",
1328           .help = "Logging related to profiles",
1329           .shift = FD_PROFILE,
1330         },
1331         { .name = "time",
1332           .help = "Logging related to time keeping functions",
1333           .shift = FD_TIME,
1334         },
1335         { .name = "net",
1336           .help = "Network logging",
1337           .shift = FD_NET,
1338         },
1339         { .name = NULL, },
1340 };
1341
1342 static int set_debug(const char *string)
1343 {
1344         struct debug_level *dl;
1345         char *p = (char *) string;
1346         char *opt;
1347         int i;
1348
1349         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1350                 log_info("fio: dumping debug options:");
1351                 for (i = 0; debug_levels[i].name; i++) {
1352                         dl = &debug_levels[i];
1353                         log_info("%s,", dl->name);
1354                 }
1355                 log_info("all\n");
1356                 return 1;
1357         }
1358
1359         while ((opt = strsep(&p, ",")) != NULL) {
1360                 int found = 0;
1361
1362                 if (!strncmp(opt, "all", 3)) {
1363                         log_info("fio: set all debug options\n");
1364                         fio_debug = ~0UL;
1365                         continue;
1366                 }
1367
1368                 for (i = 0; debug_levels[i].name; i++) {
1369                         dl = &debug_levels[i];
1370                         found = !strncmp(opt, dl->name, strlen(dl->name));
1371                         if (!found)
1372                                 continue;
1373
1374                         if (dl->shift == FD_JOB) {
1375                                 opt = strchr(opt, ':');
1376                                 if (!opt) {
1377                                         log_err("fio: missing job number\n");
1378                                         break;
1379                                 }
1380                                 opt++;
1381                                 fio_debug_jobno = atoi(opt);
1382                                 log_info("fio: set debug jobno %d\n",
1383                                                         fio_debug_jobno);
1384                         } else {
1385                                 log_info("fio: set debug option %s\n", opt);
1386                                 fio_debug |= (1UL << dl->shift);
1387                         }
1388                         break;
1389                 }
1390
1391                 if (!found)
1392                         log_err("fio: debug mask %s not found\n", opt);
1393         }
1394         return 0;
1395 }
1396 #else
1397 static int set_debug(const char *string)
1398 {
1399         log_err("fio: debug tracing not included in build\n");
1400         return 1;
1401 }
1402 #endif
1403
1404 static void fio_options_fill_optstring(void)
1405 {
1406         char *ostr = cmd_optstr;
1407         int i, c;
1408
1409         c = i = 0;
1410         while (l_opts[i].name) {
1411                 ostr[c++] = l_opts[i].val;
1412                 if (l_opts[i].has_arg == required_argument)
1413                         ostr[c++] = ':';
1414                 else if (l_opts[i].has_arg == optional_argument) {
1415                         ostr[c++] = ':';
1416                         ostr[c++] = ':';
1417                 }
1418                 i++;
1419         }
1420         ostr[c] = '\0';
1421 }
1422
1423 static int client_flag_set(char c)
1424 {
1425         int i;
1426
1427         i = 0;
1428         while (l_opts[i].name) {
1429                 int val = l_opts[i].val;
1430
1431                 if (c == (val & 0xff))
1432                         return (val & FIO_CLIENT_FLAG);
1433
1434                 i++;
1435         }
1436
1437         return 0;
1438 }
1439
1440 void parse_cmd_client(void *client, char *opt)
1441 {
1442         fio_client_add_cmd_option(client, opt);
1443 }
1444
1445 int parse_cmd_line(int argc, char *argv[], int client_type)
1446 {
1447         struct thread_data *td = NULL;
1448         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1449         char *ostr = cmd_optstr;
1450         void *pid_file = NULL;
1451         void *cur_client = NULL;
1452         int backend = 0;
1453
1454         /*
1455          * Reset optind handling, since we may call this multiple times
1456          * for the backend.
1457          */
1458         optind = 1;
1459
1460         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1461                 did_arg = 1;
1462
1463                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1464                         parse_cmd_client(cur_client, argv[optind - 1]);
1465                         c &= ~FIO_CLIENT_FLAG;
1466                 }
1467
1468                 switch (c) {
1469                 case 'a':
1470                         smalloc_pool_size = atoi(optarg);
1471                         break;
1472                 case 't':
1473                         def_timeout = atoi(optarg);
1474                         break;
1475                 case 'l':
1476                         write_lat_log = 1;
1477                         break;
1478                 case 'b':
1479                         write_bw_log = 1;
1480                         break;
1481                 case 'o':
1482                         f_out = fopen(optarg, "w+");
1483                         if (!f_out) {
1484                                 perror("fopen output");
1485                                 exit(1);
1486                         }
1487                         f_err = f_out;
1488                         break;
1489                 case 'm':
1490                         output_format = FIO_OUTPUT_TERSE;
1491                         break;
1492                 case 'F':
1493                         if (!strcmp(optarg, "minimal") ||
1494                             !strcmp(optarg, "terse") ||
1495                             !strcmp(optarg, "csv"))
1496                                 output_format = FIO_OUTPUT_TERSE;
1497                         else if (!strcmp(optarg, "json"))
1498                                 output_format = FIO_OUTPUT_JSON;
1499                         else
1500                                 output_format = FIO_OUTPUT_NORMAL;
1501                         break;
1502                 case 'h':
1503                         if (!cur_client) {
1504                                 usage(argv[0]);
1505                                 do_exit++;
1506                         }
1507                         break;
1508                 case 'c':
1509                         if (!cur_client) {
1510                                 fio_show_option_help(optarg);
1511                                 do_exit++;
1512                         }
1513                         break;
1514                 case 'i':
1515                         if (!cur_client) {
1516                                 fio_show_ioengine_help(optarg);
1517                                 do_exit++;
1518                         }
1519                         break;
1520                 case 's':
1521                         dump_cmdline = 1;
1522                         break;
1523                 case 'r':
1524                         read_only = 1;
1525                         break;
1526                 case 'v':
1527                         if (!cur_client) {
1528                                 log_info("%s\n", fio_version_string);
1529                                 do_exit++;
1530                         }
1531                         break;
1532                 case 'V':
1533                         terse_version = atoi(optarg);
1534                         if (!(terse_version == 2 || terse_version == 3 ||
1535                              terse_version == 4)) {
1536                                 log_err("fio: bad terse version format\n");
1537                                 exit_val = 1;
1538                                 do_exit++;
1539                         }
1540                         break;
1541                 case 'e':
1542                         if (!strcmp("always", optarg))
1543                                 eta_print = FIO_ETA_ALWAYS;
1544                         else if (!strcmp("never", optarg))
1545                                 eta_print = FIO_ETA_NEVER;
1546                         break;
1547                 case 'd':
1548                         if (set_debug(optarg))
1549                                 do_exit++;
1550                         break;
1551                 case 'x': {
1552                         size_t new_size;
1553
1554                         if (!strcmp(optarg, "global")) {
1555                                 log_err("fio: can't use global as only "
1556                                         "section\n");
1557                                 do_exit++;
1558                                 exit_val = 1;
1559                                 break;
1560                         }
1561                         new_size = (nr_job_sections + 1) * sizeof(char *);
1562                         job_sections = realloc(job_sections, new_size);
1563                         job_sections[nr_job_sections] = strdup(optarg);
1564                         nr_job_sections++;
1565                         break;
1566                         }
1567                 case 'p':
1568                         exec_profile = strdup(optarg);
1569                         break;
1570                 case FIO_GETOPT_JOB: {
1571                         const char *opt = l_opts[lidx].name;
1572                         char *val = optarg;
1573
1574                         if (!strncmp(opt, "name", 4) && td) {
1575                                 ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1576                                 if (ret)
1577                                         return 0;
1578                                 td = NULL;
1579                         }
1580                         if (!td) {
1581                                 int is_section = !strncmp(opt, "name", 4);
1582                                 int global = 0;
1583
1584                                 if (!is_section || !strncmp(val, "global", 6))
1585                                         global = 1;
1586
1587                                 if (is_section && skip_this_section(val))
1588                                         continue;
1589
1590                                 td = get_new_job(global, &def_thread, 1);
1591                                 if (!td || ioengine_load(td))
1592                                         return 0;
1593                                 fio_options_set_ioengine_opts(l_opts, td);
1594                         }
1595
1596                         ret = fio_cmd_option_parse(td, opt, val);
1597
1598                         if (!ret && !strcmp(opt, "ioengine")) {
1599                                 free_ioengine(td);
1600                                 if (ioengine_load(td))
1601                                         return 0;
1602                                 fio_options_set_ioengine_opts(l_opts, td);
1603                         }
1604                         break;
1605                 }
1606                 case FIO_GETOPT_IOENGINE: {
1607                         const char *opt = l_opts[lidx].name;
1608                         char *val = optarg;
1609                         opt = l_opts[lidx].name;
1610                         val = optarg;
1611                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1612                         break;
1613                 }
1614                 case 'w':
1615                         warnings_fatal = 1;
1616                         break;
1617                 case 'j':
1618                         max_jobs = atoi(optarg);
1619                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1620                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1621                                 do_exit++;
1622                                 exit_val = 1;
1623                         }
1624                         break;
1625                 case 'S':
1626                         if (nr_clients) {
1627                                 log_err("fio: can't be both client and server\n");
1628                                 do_exit++;
1629                                 exit_val = 1;
1630                                 break;
1631                         }
1632                         if (optarg)
1633                                 fio_server_set_arg(optarg);
1634                         is_backend = 1;
1635                         backend = 1;
1636                         break;
1637                 case 'D':
1638                         pid_file = strdup(optarg);
1639                         break;
1640                 case 'C':
1641                         if (is_backend) {
1642                                 log_err("fio: can't be both client and server\n");
1643                                 do_exit++;
1644                                 exit_val = 1;
1645                                 break;
1646                         }
1647                         if (fio_client_add(&fio_client_ops, optarg, &cur_client)) {
1648                                 log_err("fio: failed adding client %s\n", optarg);
1649                                 do_exit++;
1650                                 exit_val = 1;
1651                                 break;
1652                         }
1653                         /*
1654                          * If the next argument exists and isn't an option,
1655                          * assume it's a job file for this client only.
1656                          */
1657                         while (optind < argc) {
1658                                 if (!strncmp(argv[optind], "--", 2) ||
1659                                     !strncmp(argv[optind], "-", 1))
1660                                         break;
1661
1662                                 fio_client_add_ini_file(cur_client, argv[optind]);
1663                                 optind++;
1664                         }
1665                         break;
1666                 default:
1667                         do_exit++;
1668                         exit_val = 1;
1669                         break;
1670                 }
1671                 if (do_exit)
1672                         break;
1673         }
1674
1675         if (do_exit) {
1676                 if (exit_val && !(is_backend || nr_clients))
1677                         exit(exit_val);
1678         }
1679
1680         if (nr_clients && fio_clients_connect()) {
1681                 do_exit++;
1682                 exit_val = 1;
1683                 return -1;
1684         }
1685
1686         if (is_backend && backend)
1687                 return fio_start_server(pid_file);
1688
1689         if (td) {
1690                 if (!ret)
1691                         ret = add_job(td, td->o.name ?: "fio", 0, 0, client_type);
1692         }
1693
1694         while (!ret && optind < argc) {
1695                 ini_idx++;
1696                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1697                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1698                 optind++;
1699         }
1700
1701         return ini_idx;
1702 }
1703
1704 int fio_init_options(void)
1705 {
1706         f_out = stdout;
1707         f_err = stderr;
1708
1709         fio_options_fill_optstring();
1710         fio_options_dup_and_init(l_opts);
1711
1712         atexit(free_shm);
1713
1714         if (fill_def_thread())
1715                 return 1;
1716
1717         return 0;
1718 }
1719
1720 extern int fio_check_options(struct thread_options *);
1721
1722 int parse_options(int argc, char *argv[])
1723 {
1724         const int type = FIO_CLIENT_TYPE_CLI;
1725         int job_files, i;
1726
1727         if (fio_init_options())
1728                 return 1;
1729         if (fio_test_cconv(&def_thread.o))
1730                 log_err("fio: failed internal cconv test\n");
1731
1732         job_files = parse_cmd_line(argc, argv, type);
1733
1734         if (job_files > 0) {
1735                 for (i = 0; i < job_files; i++) {
1736                         if (fill_def_thread())
1737                                 return 1;
1738                         if (nr_clients) {
1739                                 if (fio_clients_send_ini(ini_file[i]))
1740                                         return 1;
1741                                 free(ini_file[i]);
1742                         } else if (!is_backend) {
1743                                 if (parse_jobs_ini(ini_file[i], 0, i, type))
1744                                         return 1;
1745                                 free(ini_file[i]);
1746                         }
1747                 }
1748         } else if (nr_clients) {
1749                 if (fill_def_thread())
1750                         return 1;
1751                 if (fio_clients_send_ini(NULL))
1752                         return 1;
1753         }
1754
1755         free(ini_file);
1756         fio_options_free(&def_thread);
1757
1758         if (!thread_number) {
1759                 if (dump_cmdline)
1760                         return 0;
1761                 if (exec_profile)
1762                         return 0;
1763                 if (is_backend || nr_clients)
1764                         return 0;
1765                 if (did_arg)
1766                         return 0;
1767
1768                 log_err("No jobs(s) defined\n\n");
1769
1770                 if (!did_arg) {
1771                         usage(argv[0]);
1772                         return 1;
1773                 }
1774
1775                 return 0;
1776         }
1777
1778         if (def_thread.o.gtod_offload) {
1779                 fio_gtod_init();
1780                 fio_gtod_offload = 1;
1781                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1782         }
1783
1784         if (output_format == FIO_OUTPUT_NORMAL)
1785                 log_info("%s\n", fio_version_string);
1786
1787         return 0;
1788 }
1789
1790 void options_default_fill(struct thread_options *o)
1791 {
1792         memcpy(o, &def_thread.o, sizeof(*o));
1793 }