381bb654a6c1ca5cf6e833862f670b3743c23708
[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 #include <sys/shm.h>
13 #include <sys/types.h>
14 #include <sys/stat.h>
15
16 #include "fio.h"
17 #include "parse.h"
18 #include "smalloc.h"
19 #include "filehash.h"
20 #include "verify.h"
21 #include "profile.h"
22 #include "server.h"
23
24 #include "lib/getopt.h"
25
26 #include "fio_version.h"
27
28 #if FIO_PATCH > 0
29 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
30                                         __fio_stringify(FIO_MINOR) "."  \
31                                         __fio_stringify(FIO_PATCH);
32 #else
33 const char fio_version_string[] =       __fio_stringify(FIO_MAJOR) "."  \
34                                         __fio_stringify(FIO_MINOR);
35 #endif
36
37 #define FIO_RANDSEED            (0xb1899bedUL)
38
39 static char **ini_file;
40 static int max_jobs = FIO_MAX_JOBS;
41 static int dump_cmdline;
42 static int def_timeout;
43
44 static struct thread_data def_thread;
45 struct thread_data *threads = NULL;
46
47 int exitall_on_terminate = 0;
48 int terse_output = 0;
49 int eta_print;
50 unsigned long long mlock_size = 0;
51 FILE *f_out = NULL;
52 FILE *f_err = NULL;
53 char **job_sections = NULL;
54 int nr_job_sections = 0;
55 char *exec_profile = NULL;
56 int warnings_fatal = 0;
57 int terse_version = 3;
58 int is_backend = 0;
59 int nr_clients = 0;
60 int log_syslog = 0;
61
62 int write_bw_log = 0;
63 int read_only = 0;
64
65 static int write_lat_log;
66
67 static int prev_group_jobs;
68
69 unsigned long fio_debug = 0;
70 unsigned int fio_debug_jobno = -1;
71 unsigned int *fio_debug_jobp = NULL;
72
73 static char cmd_optstr[256];
74 static int did_arg;
75
76 const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN] = {
77         { .u.f  =  1.0 },
78         { .u.f  =  5.0 },
79         { .u.f  = 10.0 },
80         { .u.f  = 20.0 },
81         { .u.f  = 30.0 },
82         { .u.f  = 40.0 },
83         { .u.f  = 50.0 },
84         { .u.f  = 60.0 },
85         { .u.f  = 70.0 },
86         { .u.f  = 80.0 },
87         { .u.f  = 90.0 },
88         { .u.f  = 95.0 },
89         { .u.f  = 99.0 },
90         { .u.f  = 99.5 },
91         { .u.f  = 99.9 },
92 };
93
94 #define FIO_CLIENT_FLAG         (1 << 16)
95
96 /*
97  * Command line options. These will contain the above, plus a few
98  * extra that only pertain to fio itself and not jobs.
99  */
100 static struct option l_opts[FIO_NR_OPTIONS] = {
101         {
102                 .name           = (char *) "output",
103                 .has_arg        = required_argument,
104                 .val            = 'o' | FIO_CLIENT_FLAG,
105         },
106         {
107                 .name           = (char *) "timeout",
108                 .has_arg        = required_argument,
109                 .val            = 't' | FIO_CLIENT_FLAG,
110         },
111         {
112                 .name           = (char *) "latency-log",
113                 .has_arg        = required_argument,
114                 .val            = 'l' | FIO_CLIENT_FLAG,
115         },
116         {
117                 .name           = (char *) "bandwidth-log",
118                 .has_arg        = required_argument,
119                 .val            = 'b' | FIO_CLIENT_FLAG,
120         },
121         {
122                 .name           = (char *) "minimal",
123                 .has_arg        = optional_argument,
124                 .val            = 'm' | FIO_CLIENT_FLAG,
125         },
126         {
127                 .name           = (char *) "version",
128                 .has_arg        = no_argument,
129                 .val            = 'v' | FIO_CLIENT_FLAG,
130         },
131         {
132                 .name           = (char *) "help",
133                 .has_arg        = no_argument,
134                 .val            = 'h' | FIO_CLIENT_FLAG,
135         },
136         {
137                 .name           = (char *) "cmdhelp",
138                 .has_arg        = optional_argument,
139                 .val            = 'c' | FIO_CLIENT_FLAG,
140         },
141         {
142                 .name              = (char *) "enghelp",
143                 .has_arg        = optional_argument,
144                 .val                = 'i' | FIO_CLIENT_FLAG,
145         },
146         {
147                 .name           = (char *) "showcmd",
148                 .has_arg        = no_argument,
149                 .val            = 's' | FIO_CLIENT_FLAG,
150         },
151         {
152                 .name           = (char *) "readonly",
153                 .has_arg        = no_argument,
154                 .val            = 'r' | FIO_CLIENT_FLAG,
155         },
156         {
157                 .name           = (char *) "eta",
158                 .has_arg        = required_argument,
159                 .val            = 'e' | FIO_CLIENT_FLAG,
160         },
161         {
162                 .name           = (char *) "debug",
163                 .has_arg        = required_argument,
164                 .val            = 'd' | FIO_CLIENT_FLAG,
165         },
166         {
167                 .name           = (char *) "section",
168                 .has_arg        = required_argument,
169                 .val            = 'x' | FIO_CLIENT_FLAG,
170         },
171         {
172                 .name           = (char *) "alloc-size",
173                 .has_arg        = required_argument,
174                 .val            = 'a' | FIO_CLIENT_FLAG,
175         },
176         {
177                 .name           = (char *) "profile",
178                 .has_arg        = required_argument,
179                 .val            = 'p' | FIO_CLIENT_FLAG,
180         },
181         {
182                 .name           = (char *) "warnings-fatal",
183                 .has_arg        = no_argument,
184                 .val            = 'w' | FIO_CLIENT_FLAG,
185         },
186         {
187                 .name           = (char *) "max-jobs",
188                 .has_arg        = required_argument,
189                 .val            = 'j' | FIO_CLIENT_FLAG,
190         },
191         {
192                 .name           = (char *) "terse-version",
193                 .has_arg        = required_argument,
194                 .val            = 'V' | FIO_CLIENT_FLAG,
195         },
196         {
197                 .name           = (char *) "server",
198                 .has_arg        = optional_argument,
199                 .val            = 'S',
200         },
201         {       .name           = (char *) "daemonize",
202                 .has_arg        = required_argument,
203                 .val            = 'D',
204         },
205         {
206                 .name           = (char *) "client",
207                 .has_arg        = required_argument,
208                 .val            = 'C',
209         },
210         {
211                 .name           = NULL,
212         },
213 };
214
215 static void free_shm(void)
216 {
217         struct shmid_ds sbuf;
218
219         if (threads) {
220                 void *tp = threads;
221
222                 threads = NULL;
223                 file_hash_exit();
224                 fio_debug_jobp = NULL;
225                 shmdt(tp);
226                 shmctl(shm_id, IPC_RMID, &sbuf);
227         }
228
229         scleanup();
230 }
231
232 /*
233  * The thread area is shared between the main process and the job
234  * threads/processes. So setup a shared memory segment that will hold
235  * all the job info. We use the end of the region for keeping track of
236  * open files across jobs, for file sharing.
237  */
238 static int setup_thread_area(void)
239 {
240         void *hash;
241
242         if (threads)
243                 return 0;
244
245         /*
246          * 1024 is too much on some machines, scale max_jobs if
247          * we get a failure that looks like too large a shm segment
248          */
249         do {
250                 size_t size = max_jobs * sizeof(struct thread_data);
251
252                 size += file_hash_size;
253                 size += sizeof(unsigned int);
254
255                 shm_id = shmget(0, size, IPC_CREAT | 0600);
256                 if (shm_id != -1)
257                         break;
258                 if (errno != EINVAL) {
259                         perror("shmget");
260                         break;
261                 }
262
263                 max_jobs >>= 1;
264         } while (max_jobs);
265
266         if (shm_id == -1)
267                 return 1;
268
269         threads = shmat(shm_id, NULL, 0);
270         if (threads == (void *) -1) {
271                 perror("shmat");
272                 return 1;
273         }
274
275         memset(threads, 0, max_jobs * sizeof(struct thread_data));
276         hash = (void *) threads + max_jobs * sizeof(struct thread_data);
277         fio_debug_jobp = (void *) hash + file_hash_size;
278         *fio_debug_jobp = -1;
279         file_hash_init(hash);
280         return 0;
281 }
282
283 /*
284  * Return a free job structure.
285  */
286 static struct thread_data *get_new_job(int global, struct thread_data *parent,
287                                        int preserve_eo)
288 {
289         struct thread_data *td;
290
291         if (global)
292                 return &def_thread;
293         if (setup_thread_area()) {
294                 log_err("error: failed to setup shm segment\n");
295                 return NULL;
296         }
297         if (thread_number >= max_jobs) {
298                 log_err("error: maximum number of jobs (%d) reached.\n",
299                                 max_jobs);
300                 return NULL;
301         }
302
303         td = &threads[thread_number++];
304         *td = *parent;
305
306         td->io_ops = NULL;
307         if (!preserve_eo)
308                 td->eo = NULL;
309
310         td->o.uid = td->o.gid = -1U;
311
312         dup_files(td, parent);
313         fio_options_mem_dupe(td);
314
315         profile_add_hooks(td);
316
317         td->thread_number = thread_number;
318         return td;
319 }
320
321 static void put_job(struct thread_data *td)
322 {
323         if (td == &def_thread)
324                 return;
325
326         profile_td_exit(td);
327
328         if (td->error)
329                 log_info("fio: %s\n", td->verror);
330
331         fio_options_free(td);
332         if (td->io_ops)
333                 free_ioengine(td);
334
335         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
336         thread_number--;
337 }
338
339 static int __setup_rate(struct thread_data *td, enum fio_ddir ddir)
340 {
341         unsigned int bs = td->o.min_bs[ddir];
342
343         assert(ddir_rw(ddir));
344
345         if (td->o.rate[ddir])
346                 td->rate_bps[ddir] = td->o.rate[ddir];
347         else
348                 td->rate_bps[ddir] = td->o.rate_iops[ddir] * bs;
349
350         if (!td->rate_bps[ddir]) {
351                 log_err("rate lower than supported\n");
352                 return -1;
353         }
354
355         td->rate_pending_usleep[ddir] = 0;
356         return 0;
357 }
358
359 static int setup_rate(struct thread_data *td)
360 {
361         int ret = 0;
362
363         if (td->o.rate[DDIR_READ] || td->o.rate_iops[DDIR_READ])
364                 ret = __setup_rate(td, DDIR_READ);
365         if (td->o.rate[DDIR_WRITE] || td->o.rate_iops[DDIR_WRITE])
366                 ret |= __setup_rate(td, DDIR_WRITE);
367
368         return ret;
369 }
370
371 static int fixed_block_size(struct thread_options *o)
372 {
373         return o->min_bs[DDIR_READ] == o->max_bs[DDIR_READ] &&
374                 o->min_bs[DDIR_WRITE] == o->max_bs[DDIR_WRITE] &&
375                 o->min_bs[DDIR_READ] == o->min_bs[DDIR_WRITE];
376 }
377
378 /*
379  * Lazy way of fixing up options that depend on each other. We could also
380  * define option callback handlers, but this is easier.
381  */
382 static int fixup_options(struct thread_data *td)
383 {
384         struct thread_options *o = &td->o;
385         int ret = 0;
386
387 #ifndef FIO_HAVE_PSHARED_MUTEX
388         if (!o->use_thread) {
389                 log_info("fio: this platform does not support process shared"
390                          " mutexes, forcing use of threads. Use the 'thread'"
391                          " option to get rid of this warning.\n");
392                 o->use_thread = 1;
393                 ret = warnings_fatal;
394         }
395 #endif
396
397         if (o->write_iolog_file && o->read_iolog_file) {
398                 log_err("fio: read iolog overrides write_iolog\n");
399                 free(o->write_iolog_file);
400                 o->write_iolog_file = NULL;
401                 ret = warnings_fatal;
402         }
403
404         /*
405          * only really works for sequential io for now, and with 1 file
406          */
407         if (o->zone_size && td_random(td) && o->open_files == 1)
408                 o->zone_size = 0;
409
410         /*
411          * Reads can do overwrites, we always need to pre-create the file
412          */
413         if (td_read(td) || td_rw(td))
414                 o->overwrite = 1;
415
416         if (!o->min_bs[DDIR_READ])
417                 o->min_bs[DDIR_READ] = o->bs[DDIR_READ];
418         if (!o->max_bs[DDIR_READ])
419                 o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
420         if (!o->min_bs[DDIR_WRITE])
421                 o->min_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
422         if (!o->max_bs[DDIR_WRITE])
423                 o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
424
425         o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
426
427         /*
428          * For random IO, allow blockalign offset other than min_bs.
429          */
430         if (!o->ba[DDIR_READ] || !td_random(td))
431                 o->ba[DDIR_READ] = o->min_bs[DDIR_READ];
432         if (!o->ba[DDIR_WRITE] || !td_random(td))
433                 o->ba[DDIR_WRITE] = o->min_bs[DDIR_WRITE];
434
435         if ((o->ba[DDIR_READ] != o->min_bs[DDIR_READ] ||
436             o->ba[DDIR_WRITE] != o->min_bs[DDIR_WRITE]) &&
437             !o->norandommap) {
438                 log_err("fio: Any use of blockalign= turns off randommap\n");
439                 o->norandommap = 1;
440                 ret = warnings_fatal;
441         }
442
443         if (!o->file_size_high)
444                 o->file_size_high = o->file_size_low;
445
446         if (o->norandommap && o->verify != VERIFY_NONE
447             && !fixed_block_size(o))  {
448                 log_err("fio: norandommap given for variable block sizes, "
449                         "verify disabled\n");
450                 o->verify = VERIFY_NONE;
451                 ret = warnings_fatal;
452         }
453         if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
454                 log_err("fio: bs_unaligned may not work with raw io\n");
455
456         /*
457          * thinktime_spin must be less than thinktime
458          */
459         if (o->thinktime_spin > o->thinktime)
460                 o->thinktime_spin = o->thinktime;
461
462         /*
463          * The low water mark cannot be bigger than the iodepth
464          */
465         if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
466                 /*
467                  * syslet work around - if the workload is sequential,
468                  * we want to let the queue drain all the way down to
469                  * avoid seeking between async threads
470                  */
471                 if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
472                         o->iodepth_low = 1;
473                 else
474                         o->iodepth_low = o->iodepth;
475         }
476
477         /*
478          * If batch number isn't set, default to the same as iodepth
479          */
480         if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
481                 o->iodepth_batch = o->iodepth;
482
483         if (o->nr_files > td->files_index)
484                 o->nr_files = td->files_index;
485
486         if (o->open_files > o->nr_files || !o->open_files)
487                 o->open_files = o->nr_files;
488
489         if (((o->rate[0] + o->rate[1]) && (o->rate_iops[0] + o->rate_iops[1]))||
490             ((o->ratemin[0] + o->ratemin[1]) && (o->rate_iops_min[0] +
491                 o->rate_iops_min[1]))) {
492                 log_err("fio: rate and rate_iops are mutually exclusive\n");
493                 ret = 1;
494         }
495         if ((o->rate[0] < o->ratemin[0]) || (o->rate[1] < o->ratemin[1]) ||
496             (o->rate_iops[0] < o->rate_iops_min[0]) ||
497             (o->rate_iops[1] < o->rate_iops_min[1])) {
498                 log_err("fio: minimum rate exceeds rate\n");
499                 ret = 1;
500         }
501
502         if (!o->timeout && o->time_based) {
503                 log_err("fio: time_based requires a runtime/timeout setting\n");
504                 o->time_based = 0;
505                 ret = warnings_fatal;
506         }
507
508         if (o->fill_device && !o->size)
509                 o->size = -1ULL;
510
511         if (o->verify != VERIFY_NONE) {
512                 if (td_write(td) && o->do_verify && o->numjobs > 1) {
513                         log_info("Multiple writers may overwrite blocks that "
514                                 "belong to other jobs. This can cause "
515                                 "verification failures.\n");
516                         ret = warnings_fatal;
517                 }
518
519                 o->refill_buffers = 1;
520                 if (o->max_bs[DDIR_WRITE] != o->min_bs[DDIR_WRITE] &&
521                     !o->verify_interval)
522                         o->verify_interval = o->min_bs[DDIR_WRITE];
523         }
524
525         if (o->pre_read) {
526                 o->invalidate_cache = 0;
527                 if (td->io_ops->flags & FIO_PIPEIO) {
528                         log_info("fio: cannot pre-read files with an IO engine"
529                                  " that isn't seekable. Pre-read disabled.\n");
530                         ret = warnings_fatal;
531                 }
532         }
533
534 #ifndef FIO_HAVE_FDATASYNC
535         if (o->fdatasync_blocks) {
536                 log_info("fio: this platform does not support fdatasync()"
537                          " falling back to using fsync().  Use the 'fsync'"
538                          " option instead of 'fdatasync' to get rid of"
539                          " this warning\n");
540                 o->fsync_blocks = o->fdatasync_blocks;
541                 o->fdatasync_blocks = 0;
542                 ret = warnings_fatal;
543         }
544 #endif
545
546         return ret;
547 }
548
549 /*
550  * This function leaks the buffer
551  */
552 static char *to_kmg(unsigned int val)
553 {
554         char *buf = malloc(32);
555         char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
556         char *p = post;
557
558         do {
559                 if (val & 1023)
560                         break;
561
562                 val >>= 10;
563                 p++;
564         } while (*p);
565
566         snprintf(buf, 31, "%u%c", val, *p);
567         return buf;
568 }
569
570 /* External engines are specified by "external:name.o") */
571 static const char *get_engine_name(const char *str)
572 {
573         char *p = strstr(str, ":");
574
575         if (!p)
576                 return str;
577
578         p++;
579         strip_blank_front(&p);
580         strip_blank_end(p);
581         return p;
582 }
583
584 static int exists_and_not_file(const char *filename)
585 {
586         struct stat sb;
587
588         if (lstat(filename, &sb) == -1)
589                 return 0;
590
591         /* \\.\ is the device namespace in Windows, where every file
592          * is a device node */
593         if (S_ISREG(sb.st_mode) && strncmp(filename, "\\\\.\\", 4) != 0)
594                 return 0;
595
596         return 1;
597 }
598
599 static void td_fill_rand_seeds_os(struct thread_data *td)
600 {
601         os_random_seed(td->rand_seeds[0], &td->bsrange_state);
602         os_random_seed(td->rand_seeds[1], &td->verify_state);
603         os_random_seed(td->rand_seeds[2], &td->rwmix_state);
604
605         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
606                 os_random_seed(td->rand_seeds[3], &td->next_file_state);
607
608         os_random_seed(td->rand_seeds[5], &td->file_size_state);
609         os_random_seed(td->rand_seeds[6], &td->trim_state);
610
611         if (!td_random(td))
612                 return;
613
614         if (td->o.rand_repeatable)
615                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
616
617         os_random_seed(td->rand_seeds[4], &td->random_state);
618 }
619
620 static void td_fill_rand_seeds_internal(struct thread_data *td)
621 {
622         init_rand_seed(&td->__bsrange_state, td->rand_seeds[0]);
623         init_rand_seed(&td->__verify_state, td->rand_seeds[1]);
624         init_rand_seed(&td->__rwmix_state, td->rand_seeds[2]);
625
626         if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
627                 init_rand_seed(&td->__next_file_state, td->rand_seeds[3]);
628
629         init_rand_seed(&td->__file_size_state, td->rand_seeds[5]);
630         init_rand_seed(&td->__trim_state, td->rand_seeds[6]);
631
632         if (!td_random(td))
633                 return;
634
635         if (td->o.rand_repeatable)
636                 td->rand_seeds[4] = FIO_RANDSEED * td->thread_number;
637
638         init_rand_seed(&td->__random_state, td->rand_seeds[4]);
639 }
640
641 void td_fill_rand_seeds(struct thread_data *td)
642 {
643         if (td->o.use_os_rand)
644                 td_fill_rand_seeds_os(td);
645         else
646                 td_fill_rand_seeds_internal(td);
647
648         init_rand_seed(&td->buf_state, td->rand_seeds[7]);
649 }
650
651 /*
652  * Initialize the various random states we need (random io, block size ranges,
653  * read/write mix, etc).
654  */
655 static int init_random_state(struct thread_data *td)
656 {
657         int fd;
658
659         fd = open("/dev/urandom", O_RDONLY);
660         if (fd == -1) {
661                 td_verror(td, errno, "open");
662                 return 1;
663         }
664
665         if (read(fd, td->rand_seeds, sizeof(td->rand_seeds)) <
666             (int) sizeof(td->rand_seeds)) {
667                 td_verror(td, EIO, "read");
668                 close(fd);
669                 return 1;
670         }
671
672         close(fd);
673         td_fill_rand_seeds(td);
674         return 0;
675 }
676
677 /*
678  * Initializes the ioengine configured for a job, if it has not been done so
679  * already.
680  */
681 int ioengine_load(struct thread_data *td)
682 {
683         const char *engine;
684
685         /*
686          * Engine has already been loaded.
687          */
688         if (td->io_ops)
689                 return 0;
690
691         engine = get_engine_name(td->o.ioengine);
692         td->io_ops = load_ioengine(td, engine);
693         if (!td->io_ops) {
694                 log_err("fio: failed to load engine %s\n", engine);
695                 return 1;
696         }
697
698         if (td->io_ops->option_struct_size && td->io_ops->options) {
699                 /*
700                  * In cases where td->eo is set, clone it for a child thread.
701                  * This requires that the parent thread has the same ioengine,
702                  * but that requirement must be enforced by the code which
703                  * cloned the thread.
704                  */
705                 void *origeo = td->eo;
706                 /*
707                  * Otherwise use the default thread options.
708                  */
709                 if (!origeo && td != &def_thread && def_thread.eo &&
710                     def_thread.io_ops->options == td->io_ops->options)
711                         origeo = def_thread.eo;
712
713                 options_init(td->io_ops->options);
714                 td->eo = malloc(td->io_ops->option_struct_size);
715                 /*
716                  * Use the default thread as an option template if this uses the
717                  * same options structure and there are non-default options
718                  * used.
719                  */
720                 if (origeo) {
721                         memcpy(td->eo, origeo, td->io_ops->option_struct_size);
722                         options_mem_dupe(td->eo, td->io_ops->options);
723                 } else {
724                         memset(td->eo, 0, td->io_ops->option_struct_size);
725                         fill_default_options(td->eo, td->io_ops->options);
726                 }
727                 *(struct thread_data **)td->eo = td;
728         }
729
730         return 0;
731 }
732
733 /*
734  * Adds a job to the list of things todo. Sanitizes the various options
735  * to make sure we don't have conflicts, and initializes various
736  * members of td.
737  */
738 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
739 {
740         const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
741                                    "randread", "randwrite", "randrw" };
742         unsigned int i;
743         char fname[PATH_MAX];
744         int numjobs, file_alloced;
745
746         /*
747          * the def_thread is just for options, it's not a real job
748          */
749         if (td == &def_thread)
750                 return 0;
751
752         /*
753          * if we are just dumping the output command line, don't add the job
754          */
755         if (dump_cmdline) {
756                 put_job(td);
757                 return 0;
758         }
759
760         if (profile_td_init(td))
761                 goto err;
762
763         if (ioengine_load(td))
764                 goto err;
765
766         if (td->o.use_thread)
767                 nr_thread++;
768         else
769                 nr_process++;
770
771         if (td->o.odirect)
772                 td->io_ops->flags |= FIO_RAWIO;
773
774         file_alloced = 0;
775         if (!td->o.filename && !td->files_index && !td->o.read_iolog_file) {
776                 file_alloced = 1;
777
778                 if (td->o.nr_files == 1 && exists_and_not_file(jobname))
779                         add_file(td, jobname);
780                 else {
781                         for (i = 0; i < td->o.nr_files; i++) {
782                                 sprintf(fname, "%s.%d.%d", jobname,
783                                                         td->thread_number, i);
784                                 add_file(td, fname);
785                         }
786                 }
787         }
788
789         if (fixup_options(td))
790                 goto err;
791
792         /*
793          * IO engines only need this for option callbacks, and the address may
794          * change in subprocesses.
795          */
796         if (td->eo)
797                 *(struct thread_data **)td->eo = NULL;
798
799         if (td->io_ops->flags & FIO_DISKLESSIO) {
800                 struct fio_file *f;
801
802                 for_each_file(td, f, i)
803                         f->real_file_size = -1ULL;
804         }
805
806         td->mutex = fio_mutex_init(0);
807
808         td->ts.clat_percentiles = td->o.clat_percentiles;
809         if (td->o.overwrite_plist)
810                 memcpy(td->ts.percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
811         else
812                 memcpy(td->ts.percentile_list, def_percentile_list, sizeof(def_percentile_list));
813
814         td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
815         td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
816         td->ts.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
817         td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
818         td->ddir_seq_nr = td->o.ddir_seq_nr;
819
820         if ((td->o.stonewall || td->o.new_group) && prev_group_jobs) {
821                 prev_group_jobs = 0;
822                 groupid++;
823         }
824
825         td->groupid = groupid;
826         prev_group_jobs++;
827
828         if (init_random_state(td))
829                 goto err;
830
831         if (setup_rate(td))
832                 goto err;
833
834         if (td->o.write_lat_log) {
835                 setup_log(&td->lat_log, td->o.log_avg_msec);
836                 setup_log(&td->slat_log, td->o.log_avg_msec);
837                 setup_log(&td->clat_log, td->o.log_avg_msec);
838         }
839         if (td->o.write_bw_log)
840                 setup_log(&td->bw_log, td->o.log_avg_msec);
841         if (td->o.write_iops_log)
842                 setup_log(&td->iops_log, td->o.log_avg_msec);
843
844         if (!td->o.name)
845                 td->o.name = strdup(jobname);
846
847         if (!terse_output) {
848                 if (!job_add_num) {
849                         if (!strcmp(td->io_ops->name, "cpuio")) {
850                                 log_info("%s: ioengine=cpu, cpuload=%u,"
851                                          " cpucycle=%u\n", td->o.name,
852                                                         td->o.cpuload,
853                                                         td->o.cpucycle);
854                         } else {
855                                 char *c1, *c2, *c3, *c4;
856
857                                 c1 = to_kmg(td->o.min_bs[DDIR_READ]);
858                                 c2 = to_kmg(td->o.max_bs[DDIR_READ]);
859                                 c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
860                                 c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
861
862                                 log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s,"
863                                          " ioengine=%s, iodepth=%u\n",
864                                                 td->o.name, td->groupid,
865                                                 ddir_str[td->o.td_ddir],
866                                                 c1, c2, c3, c4,
867                                                 td->io_ops->name,
868                                                 td->o.iodepth);
869
870                                 free(c1);
871                                 free(c2);
872                                 free(c3);
873                                 free(c4);
874                         }
875                 } else if (job_add_num == 1)
876                         log_info("...\n");
877         }
878
879         /*
880          * recurse add identical jobs, clear numjobs and stonewall options
881          * as they don't apply to sub-jobs
882          */
883         numjobs = td->o.numjobs;
884         while (--numjobs) {
885                 struct thread_data *td_new = get_new_job(0, td, 1);
886
887                 if (!td_new)
888                         goto err;
889
890                 td_new->o.numjobs = 1;
891                 td_new->o.stonewall = 0;
892                 td_new->o.new_group = 0;
893
894                 if (file_alloced) {
895                         td_new->o.filename = NULL;
896                         td_new->files_index = 0;
897                         td_new->files_size = 0;
898                         td_new->files = NULL;
899                 }
900
901                 job_add_num = numjobs - 1;
902
903                 if (add_job(td_new, jobname, job_add_num))
904                         goto err;
905         }
906
907         return 0;
908 err:
909         put_job(td);
910         return -1;
911 }
912
913 /*
914  * Parse as if 'o' was a command line
915  */
916 void add_job_opts(const char **o)
917 {
918         struct thread_data *td, *td_parent;
919         int i, in_global = 1;
920         char jobname[32];
921
922         i = 0;
923         td_parent = td = NULL;
924         while (o[i]) {
925                 if (!strncmp(o[i], "name", 4)) {
926                         in_global = 0;
927                         if (td)
928                                 add_job(td, jobname, 0);
929                         td = NULL;
930                         sprintf(jobname, "%s", o[i] + 5);
931                 }
932                 if (in_global && !td_parent)
933                         td_parent = get_new_job(1, &def_thread, 0);
934                 else if (!in_global && !td) {
935                         if (!td_parent)
936                                 td_parent = &def_thread;
937                         td = get_new_job(0, td_parent, 0);
938                 }
939                 if (in_global)
940                         fio_options_parse(td_parent, (char **) &o[i], 1);
941                 else
942                         fio_options_parse(td, (char **) &o[i], 1);
943                 i++;
944         }
945
946         if (td)
947                 add_job(td, jobname, 0);
948 }
949
950 static int skip_this_section(const char *name)
951 {
952         int i;
953
954         if (!nr_job_sections)
955                 return 0;
956         if (!strncmp(name, "global", 6))
957                 return 0;
958
959         for (i = 0; i < nr_job_sections; i++)
960                 if (!strcmp(job_sections[i], name))
961                         return 0;
962
963         return 1;
964 }
965
966 static int is_empty_or_comment(char *line)
967 {
968         unsigned int i;
969
970         for (i = 0; i < strlen(line); i++) {
971                 if (line[i] == ';')
972                         return 1;
973                 if (line[i] == '#')
974                         return 1;
975                 if (!isspace((int) line[i]) && !iscntrl((int) line[i]))
976                         return 0;
977         }
978
979         return 1;
980 }
981
982 /*
983  * This is our [ini] type file parser.
984  */
985 int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
986 {
987         unsigned int global;
988         struct thread_data *td;
989         char *string, *name;
990         FILE *f;
991         char *p;
992         int ret = 0, stonewall;
993         int first_sect = 1;
994         int skip_fgets = 0;
995         int inside_skip = 0;
996         char **opts;
997         int i, alloc_opts, num_opts;
998
999         if (is_buf)
1000                 f = NULL;
1001         else {
1002                 if (!strcmp(file, "-"))
1003                         f = stdin;
1004                 else
1005                         f = fopen(file, "r");
1006
1007                 if (!f) {
1008                         perror("fopen job file");
1009                         return 1;
1010                 }
1011         }
1012
1013         string = malloc(4096);
1014
1015         /*
1016          * it's really 256 + small bit, 280 should suffice
1017          */
1018         name = malloc(280);
1019         memset(name, 0, 280);
1020
1021         alloc_opts = 8;
1022         opts = malloc(sizeof(char *) * alloc_opts);
1023         num_opts = 0;
1024
1025         stonewall = stonewall_flag;
1026         do {
1027                 /*
1028                  * if skip_fgets is set, we already have loaded a line we
1029                  * haven't handled.
1030                  */
1031                 if (!skip_fgets) {
1032                         if (is_buf)
1033                                 p = strsep(&file, "\n");
1034                         else
1035                                 p = fgets(string, 4096, f);
1036                         if (!p)
1037                                 break;
1038                 }
1039
1040                 skip_fgets = 0;
1041                 strip_blank_front(&p);
1042                 strip_blank_end(p);
1043
1044                 if (is_empty_or_comment(p))
1045                         continue;
1046                 if (sscanf(p, "[%255[^\n]]", name) != 1) {
1047                         if (inside_skip)
1048                                 continue;
1049                         log_err("fio: option <%s> outside of [] job section\n",
1050                                                                         p);
1051                         break;
1052                 }
1053
1054                 name[strlen(name) - 1] = '\0';
1055
1056                 if (skip_this_section(name)) {
1057                         inside_skip = 1;
1058                         continue;
1059                 } else
1060                         inside_skip = 0;
1061
1062                 global = !strncmp(name, "global", 6);
1063
1064                 if (dump_cmdline) {
1065                         if (first_sect)
1066                                 log_info("fio ");
1067                         if (!global)
1068                                 log_info("--name=%s ", name);
1069                         first_sect = 0;
1070                 }
1071
1072                 td = get_new_job(global, &def_thread, 0);
1073                 if (!td) {
1074                         ret = 1;
1075                         break;
1076                 }
1077
1078                 /*
1079                  * Seperate multiple job files by a stonewall
1080                  */
1081                 if (!global && stonewall) {
1082                         td->o.stonewall = stonewall;
1083                         stonewall = 0;
1084                 }
1085
1086                 num_opts = 0;
1087                 memset(opts, 0, alloc_opts * sizeof(char *));
1088
1089                 while (1) {
1090                         if (is_buf)
1091                                 p = strsep(&file, "\n");
1092                         else
1093                                 p = fgets(string, 4096, f);
1094                         if (!p)
1095                                 break;
1096
1097                         if (is_empty_or_comment(p))
1098                                 continue;
1099
1100                         strip_blank_front(&p);
1101
1102                         /*
1103                          * new section, break out and make sure we don't
1104                          * fgets() a new line at the top.
1105                          */
1106                         if (p[0] == '[') {
1107                                 skip_fgets = 1;
1108                                 break;
1109                         }
1110
1111                         strip_blank_end(p);
1112
1113                         if (num_opts == alloc_opts) {
1114                                 alloc_opts <<= 1;
1115                                 opts = realloc(opts,
1116                                                 alloc_opts * sizeof(char *));
1117                         }
1118
1119                         opts[num_opts] = strdup(p);
1120                         num_opts++;
1121                 }
1122
1123                 ret = fio_options_parse(td, opts, num_opts);
1124                 if (!ret) {
1125                         if (dump_cmdline)
1126                                 for (i = 0; i < num_opts; i++)
1127                                         log_info("--%s ", opts[i]);
1128
1129                         ret = add_job(td, name, 0);
1130                 } else {
1131                         log_err("fio: job %s dropped\n", name);
1132                         put_job(td);
1133                 }
1134
1135                 for (i = 0; i < num_opts; i++)
1136                         free(opts[i]);
1137                 num_opts = 0;
1138         } while (!ret);
1139
1140         if (dump_cmdline)
1141                 log_info("\n");
1142
1143         i = 0;
1144         while (i < nr_job_sections) {
1145                 free(job_sections[i]);
1146                 i++;
1147         }
1148
1149         for (i = 0; i < num_opts; i++)
1150                 free(opts[i]);
1151
1152         free(string);
1153         free(name);
1154         free(opts);
1155         if (!is_buf && f != stdin)
1156                 fclose(f);
1157         return ret;
1158 }
1159
1160 static int fill_def_thread(void)
1161 {
1162         memset(&def_thread, 0, sizeof(def_thread));
1163
1164         fio_getaffinity(getpid(), &def_thread.o.cpumask);
1165         def_thread.o.timeout = def_timeout;
1166
1167         /*
1168          * fill default options
1169          */
1170         fio_fill_default_options(&def_thread);
1171         return 0;
1172 }
1173
1174 static void usage(const char *name)
1175 {
1176         printf("fio %s\n", fio_version_string);
1177         printf("%s [options] [job options] <job file(s)>\n", name);
1178         printf("  --debug=options\tEnable debug logging. May be one/more of:\n"
1179                 "\t\t\tprocess,file,io,mem,blktrace,verify,random,parse,\n"
1180                 "\t\t\tdiskutil,job,mutex,profile,time,net\n");
1181         printf("  --output\t\tWrite output to file\n");
1182         printf("  --timeout\t\tRuntime in seconds\n");
1183         printf("  --latency-log\t\tGenerate per-job latency logs\n");
1184         printf("  --bandwidth-log\tGenerate per-job bandwidth logs\n");
1185         printf("  --minimal\t\tMinimal (terse) output\n");
1186         printf("  --version\t\tPrint version info and exit\n");
1187         printf("  --terse-version=x\tSet terse version output format to 'x'\n");
1188         printf("  --help\t\tPrint this page\n");
1189         printf("  --cmdhelp=cmd\t\tPrint command help, \"all\" for all of"
1190                 " them\n");
1191         printf("  --enghelp=engine\tPrint ioengine help, or list"
1192                 " available ioengines\n");
1193         printf("  --enghelp=engine,cmd\tPrint help for an ioengine"
1194                 " cmd\n");
1195         printf("  --showcmd\t\tTurn a job file into command line options\n");
1196         printf("  --eta=when\t\tWhen ETA estimate should be printed\n");
1197         printf("            \t\tMay be \"always\", \"never\" or \"auto\"\n");
1198         printf("  --readonly\t\tTurn on safety read-only checks, preventing"
1199                 " writes\n");
1200         printf("  --section=name\tOnly run specified section in job file\n");
1201         printf("  --alloc-size=kb\tSet smalloc pool to this size in kb"
1202                 " (def 1024)\n");
1203         printf("  --warnings-fatal\tFio parser warnings are fatal\n");
1204         printf("  --max-jobs=nr\t\tMaximum number of threads/processes to support\n");
1205         printf("  --server=args\t\tStart a backend fio server\n");
1206         printf("  --daemonize=pidfile\tBackground fio server, write pid to file\n");
1207         printf("  --client=hostname\tTalk to remote backend fio server at hostname\n");
1208         printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
1209         printf("\n                 Jens Axboe <jaxboe@fusionio.com>\n");
1210 }
1211
1212 #ifdef FIO_INC_DEBUG
1213 struct debug_level debug_levels[] = {
1214         { .name = "process",    .shift = FD_PROCESS, },
1215         { .name = "file",       .shift = FD_FILE, },
1216         { .name = "io",         .shift = FD_IO, },
1217         { .name = "mem",        .shift = FD_MEM, },
1218         { .name = "blktrace",   .shift = FD_BLKTRACE },
1219         { .name = "verify",     .shift = FD_VERIFY },
1220         { .name = "random",     .shift = FD_RANDOM },
1221         { .name = "parse",      .shift = FD_PARSE },
1222         { .name = "diskutil",   .shift = FD_DISKUTIL },
1223         { .name = "job",        .shift = FD_JOB },
1224         { .name = "mutex",      .shift = FD_MUTEX },
1225         { .name = "profile",    .shift = FD_PROFILE },
1226         { .name = "time",       .shift = FD_TIME },
1227         { .name = "net",        .shift = FD_NET },
1228         { .name = NULL, },
1229 };
1230
1231 static int set_debug(const char *string)
1232 {
1233         struct debug_level *dl;
1234         char *p = (char *) string;
1235         char *opt;
1236         int i;
1237
1238         if (!strcmp(string, "?") || !strcmp(string, "help")) {
1239                 log_info("fio: dumping debug options:");
1240                 for (i = 0; debug_levels[i].name; i++) {
1241                         dl = &debug_levels[i];
1242                         log_info("%s,", dl->name);
1243                 }
1244                 log_info("all\n");
1245                 return 1;
1246         }
1247
1248         while ((opt = strsep(&p, ",")) != NULL) {
1249                 int found = 0;
1250
1251                 if (!strncmp(opt, "all", 3)) {
1252                         log_info("fio: set all debug options\n");
1253                         fio_debug = ~0UL;
1254                         continue;
1255                 }
1256
1257                 for (i = 0; debug_levels[i].name; i++) {
1258                         dl = &debug_levels[i];
1259                         found = !strncmp(opt, dl->name, strlen(dl->name));
1260                         if (!found)
1261                                 continue;
1262
1263                         if (dl->shift == FD_JOB) {
1264                                 opt = strchr(opt, ':');
1265                                 if (!opt) {
1266                                         log_err("fio: missing job number\n");
1267                                         break;
1268                                 }
1269                                 opt++;
1270                                 fio_debug_jobno = atoi(opt);
1271                                 log_info("fio: set debug jobno %d\n",
1272                                                         fio_debug_jobno);
1273                         } else {
1274                                 log_info("fio: set debug option %s\n", opt);
1275                                 fio_debug |= (1UL << dl->shift);
1276                         }
1277                         break;
1278                 }
1279
1280                 if (!found)
1281                         log_err("fio: debug mask %s not found\n", opt);
1282         }
1283         return 0;
1284 }
1285 #else
1286 static int set_debug(const char *string)
1287 {
1288         log_err("fio: debug tracing not included in build\n");
1289         return 1;
1290 }
1291 #endif
1292
1293 static void fio_options_fill_optstring(void)
1294 {
1295         char *ostr = cmd_optstr;
1296         int i, c;
1297
1298         c = i = 0;
1299         while (l_opts[i].name) {
1300                 ostr[c++] = l_opts[i].val;
1301                 if (l_opts[i].has_arg == required_argument)
1302                         ostr[c++] = ':';
1303                 else if (l_opts[i].has_arg == optional_argument) {
1304                         ostr[c++] = ':';
1305                         ostr[c++] = ':';
1306                 }
1307                 i++;
1308         }
1309         ostr[c] = '\0';
1310 }
1311
1312 static int client_flag_set(char c)
1313 {
1314         int i;
1315
1316         i = 0;
1317         while (l_opts[i].name) {
1318                 int val = l_opts[i].val;
1319
1320                 if (c == (val & 0xff))
1321                         return (val & FIO_CLIENT_FLAG);
1322
1323                 i++;
1324         }
1325
1326         return 0;
1327 }
1328
1329 void parse_cmd_client(void *client, char *opt)
1330 {
1331         fio_client_add_cmd_option(client, opt);
1332 }
1333
1334 int parse_cmd_line(int argc, char *argv[])
1335 {
1336         struct thread_data *td = NULL;
1337         int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
1338         char *ostr = cmd_optstr;
1339         void *pid_file = NULL;
1340         void *cur_client = NULL;
1341         int backend = 0;
1342
1343         /*
1344          * Reset optind handling, since we may call this multiple times
1345          * for the backend.
1346          */
1347         optind = 1;
1348
1349         while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
1350                 did_arg = 1;
1351
1352                 if ((c & FIO_CLIENT_FLAG) || client_flag_set(c)) {
1353                         parse_cmd_client(cur_client, argv[optind - 1]);
1354                         c &= ~FIO_CLIENT_FLAG;
1355                 }
1356
1357                 switch (c) {
1358                 case 'a':
1359                         smalloc_pool_size = atoi(optarg);
1360                         break;
1361                 case 't':
1362                         def_timeout = atoi(optarg);
1363                         break;
1364                 case 'l':
1365                         write_lat_log = 1;
1366                         break;
1367                 case 'b':
1368                         write_bw_log = 1;
1369                         break;
1370                 case 'o':
1371                         f_out = fopen(optarg, "w+");
1372                         if (!f_out) {
1373                                 perror("fopen output");
1374                                 exit(1);
1375                         }
1376                         f_err = f_out;
1377                         break;
1378                 case 'm':
1379                         terse_output = 1;
1380                         break;
1381                 case 'h':
1382                         if (!cur_client) {
1383                                 usage(argv[0]);
1384                                 do_exit++;
1385                         }
1386                         break;
1387                 case 'c':
1388                         if (!cur_client) {
1389                                 fio_show_option_help(optarg);
1390                                 do_exit++;
1391                         }
1392                         break;
1393                 case 'i':
1394                         if (!cur_client) {
1395                                 fio_show_ioengine_help(optarg);
1396                                 do_exit++;
1397                         }
1398                         break;
1399                 case 's':
1400                         dump_cmdline = 1;
1401                         break;
1402                 case 'r':
1403                         read_only = 1;
1404                         break;
1405                 case 'v':
1406                         if (!cur_client) {
1407                                 log_info("fio %s\n", fio_version_string);
1408                                 do_exit++;
1409                         }
1410                         break;
1411                 case 'V':
1412                         terse_version = atoi(optarg);
1413                         if (!(terse_version == 2 || terse_version == 3)) {
1414                                 log_err("fio: bad terse version format\n");
1415                                 exit_val = 1;
1416                                 do_exit++;
1417                         }
1418                         break;
1419                 case 'e':
1420                         if (!strcmp("always", optarg))
1421                                 eta_print = FIO_ETA_ALWAYS;
1422                         else if (!strcmp("never", optarg))
1423                                 eta_print = FIO_ETA_NEVER;
1424                         break;
1425                 case 'd':
1426                         if (set_debug(optarg))
1427                                 do_exit++;
1428                         break;
1429                 case 'x': {
1430                         size_t new_size;
1431
1432                         if (!strcmp(optarg, "global")) {
1433                                 log_err("fio: can't use global as only "
1434                                         "section\n");
1435                                 do_exit++;
1436                                 exit_val = 1;
1437                                 break;
1438                         }
1439                         new_size = (nr_job_sections + 1) * sizeof(char *);
1440                         job_sections = realloc(job_sections, new_size);
1441                         job_sections[nr_job_sections] = strdup(optarg);
1442                         nr_job_sections++;
1443                         break;
1444                         }
1445                 case 'p':
1446                         exec_profile = strdup(optarg);
1447                         break;
1448                 case FIO_GETOPT_JOB: {
1449                         const char *opt = l_opts[lidx].name;
1450                         char *val = optarg;
1451
1452                         if (!strncmp(opt, "name", 4) && td) {
1453                                 ret = add_job(td, td->o.name ?: "fio", 0);
1454                                 if (ret)
1455                                         return 0;
1456                                 td = NULL;
1457                         }
1458                         if (!td) {
1459                                 int is_section = !strncmp(opt, "name", 4);
1460                                 int global = 0;
1461
1462                                 if (!is_section || !strncmp(val, "global", 6))
1463                                         global = 1;
1464
1465                                 if (is_section && skip_this_section(val))
1466                                         continue;
1467
1468                                 td = get_new_job(global, &def_thread, 1);
1469                                 if (!td || ioengine_load(td))
1470                                         return 0;
1471                                 fio_options_set_ioengine_opts(l_opts, td);
1472                         }
1473
1474                         ret = fio_cmd_option_parse(td, opt, val);
1475
1476                         if (!ret && !strcmp(opt, "ioengine")) {
1477                                 free_ioengine(td);
1478                                 if (ioengine_load(td))
1479                                         return 0;
1480                                 fio_options_set_ioengine_opts(l_opts, td);
1481                         }
1482                         break;
1483                 }
1484                 case FIO_GETOPT_IOENGINE: {
1485                         const char *opt = l_opts[lidx].name;
1486                         char *val = optarg;
1487                         opt = l_opts[lidx].name;
1488                         val = optarg;
1489                         ret = fio_cmd_ioengine_option_parse(td, opt, val);
1490                         break;
1491                 }
1492                 case 'w':
1493                         warnings_fatal = 1;
1494                         break;
1495                 case 'j':
1496                         max_jobs = atoi(optarg);
1497                         if (!max_jobs || max_jobs > REAL_MAX_JOBS) {
1498                                 log_err("fio: invalid max jobs: %d\n", max_jobs);
1499                                 do_exit++;
1500                                 exit_val = 1;
1501                         }
1502                         break;
1503                 case 'S':
1504                         if (nr_clients) {
1505                                 log_err("fio: can't be both client and server\n");
1506                                 do_exit++;
1507                                 exit_val = 1;
1508                                 break;
1509                         }
1510                         if (optarg)
1511                                 fio_server_set_arg(optarg);
1512                         is_backend = 1;
1513                         backend = 1;
1514                         break;
1515                 case 'D':
1516                         pid_file = strdup(optarg);
1517                         break;
1518                 case 'C':
1519                         if (is_backend) {
1520                                 log_err("fio: can't be both client and server\n");
1521                                 do_exit++;
1522                                 exit_val = 1;
1523                                 break;
1524                         }
1525                         if (fio_client_add(optarg, &cur_client)) {
1526                                 log_err("fio: failed adding client %s\n", optarg);
1527                                 do_exit++;
1528                                 exit_val = 1;
1529                                 break;
1530                         }
1531                         break;
1532                 default:
1533                         do_exit++;
1534                         exit_val = 1;
1535                         break;
1536                 }
1537                 if (do_exit)
1538                         break;
1539         }
1540
1541         if (do_exit) {
1542                 if (exit_val && !(is_backend || nr_clients))
1543                         exit(exit_val);
1544         }
1545
1546         if (nr_clients && fio_clients_connect()) {
1547                 do_exit++;
1548                 exit_val = 1;
1549                 return -1;
1550         }
1551
1552         if (is_backend && backend)
1553                 return fio_start_server(pid_file);
1554
1555         if (td) {
1556                 if (!ret)
1557                         ret = add_job(td, td->o.name ?: "fio", 0);
1558         }
1559
1560         while (!ret && optind < argc) {
1561                 ini_idx++;
1562                 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1563                 ini_file[ini_idx - 1] = strdup(argv[optind]);
1564                 optind++;
1565         }
1566
1567         return ini_idx;
1568 }
1569
1570 int parse_options(int argc, char *argv[])
1571 {
1572         int job_files, i;
1573
1574         f_out = stdout;
1575         f_err = stderr;
1576
1577         fio_options_fill_optstring();
1578         fio_options_dup_and_init(l_opts);
1579
1580         atexit(free_shm);
1581
1582         if (fill_def_thread())
1583                 return 1;
1584
1585         job_files = parse_cmd_line(argc, argv);
1586
1587         if (job_files > 0) {
1588                 for (i = 0; i < job_files; i++) {
1589                         if (fill_def_thread())
1590                                 return 1;
1591                         if (nr_clients) {
1592                                 if (fio_clients_send_ini(ini_file[i]))
1593                                         return 1;
1594                                 free(ini_file[i]);
1595                         } else if (!is_backend) {
1596                                 if (parse_jobs_ini(ini_file[i], 0, i))
1597                                         return 1;
1598                                 free(ini_file[i]);
1599                         }
1600                 }
1601         }
1602
1603         free(ini_file);
1604         fio_options_free(&def_thread);
1605
1606         if (!thread_number) {
1607                 if (dump_cmdline)
1608                         return 0;
1609                 if (exec_profile)
1610                         return 0;
1611                 if (is_backend || nr_clients)
1612                         return 0;
1613                 if (did_arg)
1614                         return 0;
1615
1616                 log_err("No jobs(s) defined\n\n");
1617
1618                 if (!did_arg) {
1619                         usage(argv[0]);
1620                         return 1;
1621                 }
1622
1623                 return 0;
1624         }
1625
1626         if (def_thread.o.gtod_offload) {
1627                 fio_gtod_init();
1628                 fio_gtod_offload = 1;
1629                 fio_gtod_cpu = def_thread.o.gtod_cpu;
1630         }
1631
1632         if (!terse_output)
1633                 log_info("fio %s\n", fio_version_string);
1634
1635         return 0;
1636 }