Merge branch 'multiclnt-sharedfs-try3' of git://github.com/bengland2/fio
[fio.git] / options.c
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <unistd.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <assert.h>
7 #include <libgen.h>
8 #include <fcntl.h>
9 #include <sys/types.h>
10 #include <sys/stat.h>
11
12 #include "fio.h"
13 #include "verify.h"
14 #include "parse.h"
15 #include "lib/fls.h"
16 #include "options.h"
17
18 #include "crc/crc32c.h"
19
20 char client_sockaddr_str[INET6_ADDRSTRLEN] = {0};
21
22 /*
23  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
24  */
25 static char *get_opt_postfix(const char *str)
26 {
27         char *p = strstr(str, ":");
28
29         if (!p)
30                 return NULL;
31
32         p++;
33         strip_blank_front(&p);
34         strip_blank_end(p);
35         return strdup(p);
36 }
37
38 static int converthexchartoint(char a)
39 {
40         int base;
41
42         switch (a) {
43         case '0'...'9':
44                 base = '0';
45                 break;
46         case 'A'...'F':
47                 base = 'A' - 10;
48                 break;
49         case 'a'...'f':
50                 base = 'a' - 10;
51                 break;
52         default:
53                 base = 0;
54         }
55         return a - base;
56 }
57
58 static int bs_cmp(const void *p1, const void *p2)
59 {
60         const struct bssplit *bsp1 = p1;
61         const struct bssplit *bsp2 = p2;
62
63         return bsp1->perc < bsp2->perc;
64 }
65
66 static int bssplit_ddir(struct thread_options *o, int ddir, char *str)
67 {
68         struct bssplit *bssplit;
69         unsigned int i, perc, perc_missing;
70         unsigned int max_bs, min_bs;
71         long long val;
72         char *fname;
73
74         o->bssplit_nr[ddir] = 4;
75         bssplit = malloc(4 * sizeof(struct bssplit));
76
77         i = 0;
78         max_bs = 0;
79         min_bs = -1;
80         while ((fname = strsep(&str, ":")) != NULL) {
81                 char *perc_str;
82
83                 if (!strlen(fname))
84                         break;
85
86                 /*
87                  * grow struct buffer, if needed
88                  */
89                 if (i == o->bssplit_nr[ddir]) {
90                         o->bssplit_nr[ddir] <<= 1;
91                         bssplit = realloc(bssplit, o->bssplit_nr[ddir]
92                                                   * sizeof(struct bssplit));
93                 }
94
95                 perc_str = strstr(fname, "/");
96                 if (perc_str) {
97                         *perc_str = '\0';
98                         perc_str++;
99                         perc = atoi(perc_str);
100                         if (perc > 100)
101                                 perc = 100;
102                         else if (!perc)
103                                 perc = -1U;
104                 } else
105                         perc = -1U;
106
107                 if (str_to_decimal(fname, &val, 1, o, 0, 0)) {
108                         log_err("fio: bssplit conversion failed\n");
109                         free(bssplit);
110                         return 1;
111                 }
112
113                 if (val > max_bs)
114                         max_bs = val;
115                 if (val < min_bs)
116                         min_bs = val;
117
118                 bssplit[i].bs = val;
119                 bssplit[i].perc = perc;
120                 i++;
121         }
122
123         o->bssplit_nr[ddir] = i;
124
125         /*
126          * Now check if the percentages add up, and how much is missing
127          */
128         perc = perc_missing = 0;
129         for (i = 0; i < o->bssplit_nr[ddir]; i++) {
130                 struct bssplit *bsp = &bssplit[i];
131
132                 if (bsp->perc == -1U)
133                         perc_missing++;
134                 else
135                         perc += bsp->perc;
136         }
137
138         if (perc > 100 && perc_missing > 1) {
139                 log_err("fio: bssplit percentages add to more than 100%%\n");
140                 free(bssplit);
141                 return 1;
142         }
143
144         /*
145          * If values didn't have a percentage set, divide the remains between
146          * them.
147          */
148         if (perc_missing) {
149                 if (perc_missing == 1 && o->bssplit_nr[ddir] == 1)
150                         perc = 100;
151                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
152                         struct bssplit *bsp = &bssplit[i];
153
154                         if (bsp->perc == -1U)
155                                 bsp->perc = (100 - perc) / perc_missing;
156                 }
157         }
158
159         o->min_bs[ddir] = min_bs;
160         o->max_bs[ddir] = max_bs;
161
162         /*
163          * now sort based on percentages, for ease of lookup
164          */
165         qsort(bssplit, o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
166         o->bssplit[ddir] = bssplit;
167         return 0;
168 }
169
170 static int str_bssplit_cb(void *data, const char *input)
171 {
172         struct thread_data *td = data;
173         char *str, *p, *odir, *ddir;
174         int ret = 0;
175
176         if (parse_dryrun())
177                 return 0;
178
179         p = str = strdup(input);
180
181         strip_blank_front(&str);
182         strip_blank_end(str);
183
184         odir = strchr(str, ',');
185         if (odir) {
186                 ddir = strchr(odir + 1, ',');
187                 if (ddir) {
188                         ret = bssplit_ddir(&td->o, DDIR_TRIM, ddir + 1);
189                         if (!ret)
190                                 *ddir = '\0';
191                 } else {
192                         char *op;
193
194                         op = strdup(odir + 1);
195                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
196
197                         free(op);
198                 }
199                 if (!ret)
200                         ret = bssplit_ddir(&td->o, DDIR_WRITE, odir + 1);
201                 if (!ret) {
202                         *odir = '\0';
203                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
204                 }
205         } else {
206                 char *op;
207
208                 op = strdup(str);
209                 ret = bssplit_ddir(&td->o, DDIR_WRITE, op);
210                 free(op);
211
212                 if (!ret) {
213                         op = strdup(str);
214                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
215                         free(op);
216                 }
217                 ret = bssplit_ddir(&td->o, DDIR_READ, str);
218         }
219
220         free(p);
221         return ret;
222 }
223
224 static int str2error(char *str)
225 {
226         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
227                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
228                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
229                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
230                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
231                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
232                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
233                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
234         int i = 0, num = sizeof(err) / sizeof(void *);
235
236         while (i < num) {
237                 if (!strcmp(err[i], str))
238                         return i + 1;
239                 i++;
240         }
241         return 0;
242 }
243
244 static int ignore_error_type(struct thread_data *td, int etype, char *str)
245 {
246         unsigned int i;
247         int *error;
248         char *fname;
249
250         if (etype >= ERROR_TYPE_CNT) {
251                 log_err("Illegal error type\n");
252                 return 1;
253         }
254
255         td->o.ignore_error_nr[etype] = 4;
256         error = malloc(4 * sizeof(struct bssplit));
257
258         i = 0;
259         while ((fname = strsep(&str, ":")) != NULL) {
260
261                 if (!strlen(fname))
262                         break;
263
264                 /*
265                  * grow struct buffer, if needed
266                  */
267                 if (i == td->o.ignore_error_nr[etype]) {
268                         td->o.ignore_error_nr[etype] <<= 1;
269                         error = realloc(error, td->o.ignore_error_nr[etype]
270                                                   * sizeof(int));
271                 }
272                 if (fname[0] == 'E') {
273                         error[i] = str2error(fname);
274                 } else {
275                         error[i] = atoi(fname);
276                         if (error[i] < 0)
277                                 error[i] = -error[i];
278                 }
279                 if (!error[i]) {
280                         log_err("Unknown error %s, please use number value \n",
281                                   fname);
282                         free(error);
283                         return 1;
284                 }
285                 i++;
286         }
287         if (i) {
288                 td->o.continue_on_error |= 1 << etype;
289                 td->o.ignore_error_nr[etype] = i;
290                 td->o.ignore_error[etype] = error;
291         } else
292                 free(error);
293
294         return 0;
295
296 }
297
298 static int str_ignore_error_cb(void *data, const char *input)
299 {
300         struct thread_data *td = data;
301         char *str, *p, *n;
302         int type = 0, ret = 1;
303
304         if (parse_dryrun())
305                 return 0;
306
307         p = str = strdup(input);
308
309         strip_blank_front(&str);
310         strip_blank_end(str);
311
312         while (p) {
313                 n = strchr(p, ',');
314                 if (n)
315                         *n++ = '\0';
316                 ret = ignore_error_type(td, type, p);
317                 if (ret)
318                         break;
319                 p = n;
320                 type++;
321         }
322         free(str);
323         return ret;
324 }
325
326 static int str_rw_cb(void *data, const char *str)
327 {
328         struct thread_data *td = data;
329         struct thread_options *o = &td->o;
330         char *nr;
331
332         if (parse_dryrun())
333                 return 0;
334
335         o->ddir_seq_nr = 1;
336         o->ddir_seq_add = 0;
337
338         nr = get_opt_postfix(str);
339         if (!nr)
340                 return 0;
341
342         if (td_random(td))
343                 o->ddir_seq_nr = atoi(nr);
344         else {
345                 long long val;
346
347                 if (str_to_decimal(nr, &val, 1, o, 0, 0)) {
348                         log_err("fio: rw postfix parsing failed\n");
349                         free(nr);
350                         return 1;
351                 }
352
353                 o->ddir_seq_add = val;
354         }
355
356         free(nr);
357         return 0;
358 }
359
360 static int str_mem_cb(void *data, const char *mem)
361 {
362         struct thread_data *td = data;
363
364         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP)
365                 td->o.mmapfile = get_opt_postfix(mem);
366
367         return 0;
368 }
369
370 static int fio_clock_source_cb(void *data, const char *str)
371 {
372         struct thread_data *td = data;
373
374         fio_clock_source = td->o.clocksource;
375         fio_clock_source_set = 1;
376         fio_clock_init();
377         return 0;
378 }
379
380 static int str_rwmix_read_cb(void *data, unsigned long long *val)
381 {
382         struct thread_data *td = data;
383
384         td->o.rwmix[DDIR_READ] = *val;
385         td->o.rwmix[DDIR_WRITE] = 100 - *val;
386         return 0;
387 }
388
389 static int str_rwmix_write_cb(void *data, unsigned long long *val)
390 {
391         struct thread_data *td = data;
392
393         td->o.rwmix[DDIR_WRITE] = *val;
394         td->o.rwmix[DDIR_READ] = 100 - *val;
395         return 0;
396 }
397
398 static int str_exitall_cb(void)
399 {
400         exitall_on_terminate = 1;
401         return 0;
402 }
403
404 #ifdef FIO_HAVE_CPU_AFFINITY
405 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
406 {
407         unsigned int i, index, cpus_in_mask;
408         const long max_cpu = cpus_online();
409
410         cpus_in_mask = fio_cpu_count(mask);
411         cpu_index = cpu_index % cpus_in_mask;
412
413         index = 0;
414         for (i = 0; i < max_cpu; i++) {
415                 if (!fio_cpu_isset(mask, i))
416                         continue;
417
418                 if (cpu_index != index)
419                         fio_cpu_clear(mask, i);
420
421                 index++;
422         }
423
424         return fio_cpu_count(mask);
425 }
426
427 static int str_cpumask_cb(void *data, unsigned long long *val)
428 {
429         struct thread_data *td = data;
430         unsigned int i;
431         long max_cpu;
432         int ret;
433
434         if (parse_dryrun())
435                 return 0;
436
437         ret = fio_cpuset_init(&td->o.cpumask);
438         if (ret < 0) {
439                 log_err("fio: cpuset_init failed\n");
440                 td_verror(td, ret, "fio_cpuset_init");
441                 return 1;
442         }
443
444         max_cpu = cpus_online();
445
446         for (i = 0; i < sizeof(int) * 8; i++) {
447                 if ((1 << i) & *val) {
448                         if (i >= max_cpu) {
449                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
450                                                                 max_cpu - 1);
451                                 return 1;
452                         }
453                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
454                         fio_cpu_set(&td->o.cpumask, i);
455                 }
456         }
457
458         return 0;
459 }
460
461 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
462                             const char *input)
463 {
464         char *cpu, *str, *p;
465         long max_cpu;
466         int ret = 0;
467
468         ret = fio_cpuset_init(mask);
469         if (ret < 0) {
470                 log_err("fio: cpuset_init failed\n");
471                 td_verror(td, ret, "fio_cpuset_init");
472                 return 1;
473         }
474
475         p = str = strdup(input);
476
477         strip_blank_front(&str);
478         strip_blank_end(str);
479
480         max_cpu = cpus_online();
481
482         while ((cpu = strsep(&str, ",")) != NULL) {
483                 char *str2, *cpu2;
484                 int icpu, icpu2;
485
486                 if (!strlen(cpu))
487                         break;
488
489                 str2 = cpu;
490                 icpu2 = -1;
491                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
492                         if (!strlen(cpu2))
493                                 break;
494
495                         icpu2 = atoi(cpu2);
496                 }
497
498                 icpu = atoi(cpu);
499                 if (icpu2 == -1)
500                         icpu2 = icpu;
501                 while (icpu <= icpu2) {
502                         if (icpu >= FIO_MAX_CPUS) {
503                                 log_err("fio: your OS only supports up to"
504                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
505                                 ret = 1;
506                                 break;
507                         }
508                         if (icpu >= max_cpu) {
509                                 log_err("fio: CPU %d too large (max=%ld)\n",
510                                                         icpu, max_cpu - 1);
511                                 ret = 1;
512                                 break;
513                         }
514
515                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
516                         fio_cpu_set(mask, icpu);
517                         icpu++;
518                 }
519                 if (ret)
520                         break;
521         }
522
523         free(p);
524         return ret;
525 }
526
527 static int str_cpus_allowed_cb(void *data, const char *input)
528 {
529         struct thread_data *td = data;
530
531         if (parse_dryrun())
532                 return 0;
533
534         return set_cpus_allowed(td, &td->o.cpumask, input);
535 }
536
537 static int str_verify_cpus_allowed_cb(void *data, const char *input)
538 {
539         struct thread_data *td = data;
540
541         return set_cpus_allowed(td, &td->o.verify_cpumask, input);
542 }
543 #endif
544
545 #ifdef CONFIG_LIBNUMA
546 static int str_numa_cpunodes_cb(void *data, char *input)
547 {
548         struct thread_data *td = data;
549         struct bitmask *verify_bitmask;
550
551         if (parse_dryrun())
552                 return 0;
553
554         /* numa_parse_nodestring() parses a character string list
555          * of nodes into a bit mask. The bit mask is allocated by
556          * numa_allocate_nodemask(), so it should be freed by
557          * numa_free_nodemask().
558          */
559         verify_bitmask = numa_parse_nodestring(input);
560         if (verify_bitmask == NULL) {
561                 log_err("fio: numa_parse_nodestring failed\n");
562                 td_verror(td, 1, "str_numa_cpunodes_cb");
563                 return 1;
564         }
565         numa_free_nodemask(verify_bitmask);
566
567         td->o.numa_cpunodes = strdup(input);
568         return 0;
569 }
570
571 static int str_numa_mpol_cb(void *data, char *input)
572 {
573         struct thread_data *td = data;
574         const char * const policy_types[] =
575                 { "default", "prefer", "bind", "interleave", "local", NULL };
576         int i;
577         char *nodelist;
578         struct bitmask *verify_bitmask;
579
580         if (parse_dryrun())
581                 return 0;
582
583         nodelist = strchr(input, ':');
584         if (nodelist) {
585                 /* NUL-terminate mode */
586                 *nodelist++ = '\0';
587         }
588
589         for (i = 0; i <= MPOL_LOCAL; i++) {
590                 if (!strcmp(input, policy_types[i])) {
591                         td->o.numa_mem_mode = i;
592                         break;
593                 }
594         }
595         if (i > MPOL_LOCAL) {
596                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
597                 goto out;
598         }
599
600         switch (td->o.numa_mem_mode) {
601         case MPOL_PREFERRED:
602                 /*
603                  * Insist on a nodelist of one node only
604                  */
605                 if (nodelist) {
606                         char *rest = nodelist;
607                         while (isdigit(*rest))
608                                 rest++;
609                         if (*rest) {
610                                 log_err("fio: one node only for \'prefer\'\n");
611                                 goto out;
612                         }
613                 } else {
614                         log_err("fio: one node is needed for \'prefer\'\n");
615                         goto out;
616                 }
617                 break;
618         case MPOL_INTERLEAVE:
619                 /*
620                  * Default to online nodes with memory if no nodelist
621                  */
622                 if (!nodelist)
623                         nodelist = strdup("all");
624                 break;
625         case MPOL_LOCAL:
626         case MPOL_DEFAULT:
627                 /*
628                  * Don't allow a nodelist
629                  */
630                 if (nodelist) {
631                         log_err("fio: NO nodelist for \'local\'\n");
632                         goto out;
633                 }
634                 break;
635         case MPOL_BIND:
636                 /*
637                  * Insist on a nodelist
638                  */
639                 if (!nodelist) {
640                         log_err("fio: a nodelist is needed for \'bind\'\n");
641                         goto out;
642                 }
643                 break;
644         }
645
646
647         /* numa_parse_nodestring() parses a character string list
648          * of nodes into a bit mask. The bit mask is allocated by
649          * numa_allocate_nodemask(), so it should be freed by
650          * numa_free_nodemask().
651          */
652         switch (td->o.numa_mem_mode) {
653         case MPOL_PREFERRED:
654                 td->o.numa_mem_prefer_node = atoi(nodelist);
655                 break;
656         case MPOL_INTERLEAVE:
657         case MPOL_BIND:
658                 verify_bitmask = numa_parse_nodestring(nodelist);
659                 if (verify_bitmask == NULL) {
660                         log_err("fio: numa_parse_nodestring failed\n");
661                         td_verror(td, 1, "str_numa_memnodes_cb");
662                         return 1;
663                 }
664                 td->o.numa_memnodes = strdup(nodelist);
665                 numa_free_nodemask(verify_bitmask);
666
667                 break;
668         case MPOL_LOCAL:
669         case MPOL_DEFAULT:
670         default:
671                 break;
672         }
673
674         return 0;
675 out:
676         return 1;
677 }
678 #endif
679
680 static int str_fst_cb(void *data, const char *str)
681 {
682         struct thread_data *td = data;
683         char *nr = get_opt_postfix(str);
684
685         td->file_service_nr = 1;
686         if (nr) {
687                 td->file_service_nr = atoi(nr);
688                 free(nr);
689         }
690
691         return 0;
692 }
693
694 #ifdef CONFIG_SYNC_FILE_RANGE
695 static int str_sfr_cb(void *data, const char *str)
696 {
697         struct thread_data *td = data;
698         char *nr = get_opt_postfix(str);
699
700         td->sync_file_range_nr = 1;
701         if (nr) {
702                 td->sync_file_range_nr = atoi(nr);
703                 free(nr);
704         }
705
706         return 0;
707 }
708 #endif
709
710 static int str_random_distribution_cb(void *data, const char *str)
711 {
712         struct thread_data *td = data;
713         double val;
714         char *nr;
715
716         if (parse_dryrun())
717                 return 0;
718
719         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
720                 val = FIO_DEF_ZIPF;
721         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
722                 val = FIO_DEF_PARETO;
723         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
724                 val = 0.0;
725         else
726                 return 0;
727
728         nr = get_opt_postfix(str);
729         if (nr && !str_to_float(nr, &val, 0)) {
730                 log_err("fio: random postfix parsing failed\n");
731                 free(nr);
732                 return 1;
733         }
734
735         free(nr);
736
737         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
738                 if (val == 1.00) {
739                         log_err("fio: zipf theta must different than 1.0\n");
740                         return 1;
741                 }
742                 td->o.zipf_theta.u.f = val;
743         } else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) {
744                 if (val <= 0.00 || val >= 1.00) {
745                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
746                         return 1;
747                 }
748                 td->o.pareto_h.u.f = val;
749         } else {
750                 if (val <= 0.00 || val >= 100.0) {
751                         log_err("fio: normal deviation out of range (0 < input < 100.0)\n");
752                         return 1;
753                 }
754                 td->o.gauss_dev.u.f = val;
755         }
756
757         return 0;
758 }
759
760 /*
761  * Return next name in the string. Files are separated with ':'. If the ':'
762  * is escaped with a '\', then that ':' is part of the filename and does not
763  * indicate a new file.
764  */
765 static char *get_next_name(char **ptr)
766 {
767         char *str = *ptr;
768         char *p, *start;
769
770         if (!str || !strlen(str))
771                 return NULL;
772
773         start = str;
774         do {
775                 /*
776                  * No colon, we are done
777                  */
778                 p = strchr(str, ':');
779                 if (!p) {
780                         *ptr = NULL;
781                         break;
782                 }
783
784                 /*
785                  * We got a colon, but it's the first character. Skip and
786                  * continue
787                  */
788                 if (p == start) {
789                         str = ++start;
790                         continue;
791                 }
792
793                 if (*(p - 1) != '\\') {
794                         *p = '\0';
795                         *ptr = p + 1;
796                         break;
797                 }
798
799                 memmove(p - 1, p, strlen(p) + 1);
800                 str = p;
801         } while (1);
802
803         return start;
804 }
805
806
807 static int get_max_name_idx(char *input)
808 {
809         unsigned int cur_idx;
810         char *str, *p;
811
812         p = str = strdup(input);
813         for (cur_idx = 0; ; cur_idx++)
814                 if (get_next_name(&str) == NULL)
815                         break;
816
817         free(p);
818         return cur_idx;
819 }
820
821 /*
822  * Returns the directory at the index, indexes > entires will be
823  * assigned via modulo division of the index
824  */
825 int set_name_idx(char *target, char *input, int index)
826 {
827         unsigned int cur_idx;
828         int len;
829         char *fname, *str, *p;
830
831         p = str = strdup(input);
832
833         index %= get_max_name_idx(input);
834         for (cur_idx = 0; cur_idx <= index; cur_idx++)
835                 fname = get_next_name(&str);
836
837         if (client_sockaddr_str[0]) {
838                 len = sprintf(target, "%s/%s.", fname, client_sockaddr_str);
839         } else {
840                 len = sprintf(target, "%s/", fname);
841         }
842
843         free(p);
844
845         return len;
846 }
847
848 static int str_filename_cb(void *data, const char *input)
849 {
850         struct thread_data *td = data;
851         char *fname, *str, *p;
852
853         p = str = strdup(input);
854
855         strip_blank_front(&str);
856         strip_blank_end(str);
857
858         if (!td->files_index)
859                 td->o.nr_files = 0;
860
861         while ((fname = get_next_name(&str)) != NULL) {
862                 if (!strlen(fname))
863                         break;
864                 add_file(td, fname, 0, 1);
865         }
866
867         free(p);
868         return 0;
869 }
870
871 static int str_directory_cb(void *data, const char fio_unused *unused)
872 {
873         struct thread_data *td = data;
874         struct stat sb;
875         char *dirname, *str, *p;
876         int ret = 0;
877
878         if (parse_dryrun())
879                 return 0;
880
881         p = str = strdup(td->o.directory);
882         while ((dirname = get_next_name(&str)) != NULL) {
883                 if (lstat(dirname, &sb) < 0) {
884                         ret = errno;
885
886                         log_err("fio: %s is not a directory\n", dirname);
887                         td_verror(td, ret, "lstat");
888                         goto out;
889                 }
890                 if (!S_ISDIR(sb.st_mode)) {
891                         log_err("fio: %s is not a directory\n", dirname);
892                         ret = 1;
893                         goto out;
894                 }
895         }
896
897 out:
898         free(p);
899         return ret;
900 }
901
902 static int str_opendir_cb(void *data, const char fio_unused *str)
903 {
904         struct thread_data *td = data;
905
906         if (parse_dryrun())
907                 return 0;
908
909         if (!td->files_index)
910                 td->o.nr_files = 0;
911
912         return add_dir_files(td, td->o.opendir);
913 }
914
915 static int pattern_cb(char *pattern, unsigned int max_size,
916                       const char *input, unsigned int *pattern_bytes)
917 {
918         long off;
919         int i = 0, j = 0, len, k, base = 10;
920         uint32_t pattern_length;
921         char *loc1, *loc2;
922
923         /*
924          * Check if it's a string input
925          */
926         loc1 = strchr(input, '\"');
927         if (loc1) {
928                 do {
929                         loc1++;
930                         if (*loc1 == '\0' || *loc1 == '\"')
931                                 break;
932
933                         pattern[i] = *loc1;
934                         i++;
935                 } while (i < max_size);
936
937                 if (!i)
938                         return 1;
939
940                 goto fill;
941         }
942
943         /*
944          * No string, find out if it's decimal or hexidecimal
945          */
946         loc1 = strstr(input, "0x");
947         loc2 = strstr(input, "0X");
948         if (loc1 || loc2)
949                 base = 16;
950         off = strtol(input, NULL, base);
951         if (off != LONG_MAX || errno != ERANGE) {
952                 while (off) {
953                         pattern[i] = off & 0xff;
954                         off >>= 8;
955                         i++;
956                 }
957         } else {
958                 len = strlen(input);
959                 k = len - 1;
960                 if (base == 16) {
961                         if (loc1)
962                                 j = loc1 - input + 2;
963                         else
964                                 j = loc2 - input + 2;
965                 } else
966                         return 1;
967                 if (len - j < max_size * 2) {
968                         while (k >= j) {
969                                 off = converthexchartoint(input[k--]);
970                                 if (k >= j)
971                                         off += (converthexchartoint(input[k--])
972                                                 * 16);
973                                 pattern[i++] = (char) off;
974                         }
975                 }
976         }
977
978         /*
979          * Fill the pattern all the way to the end. This greatly reduces
980          * the number of memcpy's we have to do when verifying the IO.
981          */
982 fill:
983         pattern_length = i;
984         while (i > 1 && i * 2 <= max_size) {
985                 memcpy(&pattern[i], &pattern[0], i);
986                 i *= 2;
987         }
988
989         /*
990          * Fill remainder, if the pattern multiple ends up not being
991          * max_size.
992          */
993         while (i > 1 && i < max_size) {
994                 unsigned int b = min(pattern_length, max_size - i);
995
996                 memcpy(&pattern[i], &pattern[0], b);
997                 i += b;
998         }
999
1000         if (i == 1) {
1001                 /*
1002                  * The code in verify_io_u_pattern assumes a single byte
1003                  * pattern fills the whole verify pattern buffer.
1004                  */
1005                 memset(pattern, pattern[0], max_size);
1006         }
1007
1008         *pattern_bytes = i;
1009         return 0;
1010 }
1011
1012 static int str_buffer_pattern_cb(void *data, const char *input)
1013 {
1014         struct thread_data *td = data;
1015         int ret;
1016
1017         ret = pattern_cb(td->o.buffer_pattern, MAX_PATTERN_SIZE, input,
1018                                 &td->o.buffer_pattern_bytes);
1019
1020         if (!ret && td->o.buffer_pattern_bytes) {
1021                 if (!td->o.compress_percentage)
1022                         td->o.refill_buffers = 0;
1023                 td->o.scramble_buffers = 0;
1024                 td->o.zero_buffers = 0;
1025         } else {
1026                 log_err("fio: failed parsing pattern `%s`\n", input);
1027                 ret = 1;
1028         }
1029
1030         return ret;
1031 }
1032
1033 static int str_buffer_compress_cb(void *data, unsigned long long *il)
1034 {
1035         struct thread_data *td = data;
1036
1037         td->flags |= TD_F_COMPRESS;
1038         td->o.compress_percentage = *il;
1039         return 0;
1040 }
1041
1042 static int str_dedupe_cb(void *data, unsigned long long *il)
1043 {
1044         struct thread_data *td = data;
1045
1046         td->flags |= TD_F_COMPRESS;
1047         td->o.dedupe_percentage = *il;
1048         td->o.refill_buffers = 1;
1049         return 0;
1050 }
1051
1052 static int str_verify_pattern_cb(void *data, const char *input)
1053 {
1054         struct thread_data *td = data;
1055         int ret;
1056
1057         ret = pattern_cb(td->o.verify_pattern, MAX_PATTERN_SIZE, input,
1058                                 &td->o.verify_pattern_bytes);
1059
1060         /*
1061          * VERIFY_META could already be set
1062          */
1063         if (!ret && td->o.verify == VERIFY_NONE)
1064                 td->o.verify = VERIFY_PATTERN;
1065
1066         return ret;
1067 }
1068
1069 static int str_gtod_reduce_cb(void *data, int *il)
1070 {
1071         struct thread_data *td = data;
1072         int val = *il;
1073
1074         td->o.disable_lat = !!val;
1075         td->o.disable_clat = !!val;
1076         td->o.disable_slat = !!val;
1077         td->o.disable_bw = !!val;
1078         td->o.clat_percentiles = !val;
1079         if (val)
1080                 td->tv_cache_mask = 63;
1081
1082         return 0;
1083 }
1084
1085 static int str_size_cb(void *data, unsigned long long *__val)
1086 {
1087         struct thread_data *td = data;
1088         unsigned long long v = *__val;
1089
1090         if (parse_is_percent(v)) {
1091                 td->o.size = 0;
1092                 td->o.size_percent = -1ULL - v;
1093         } else
1094                 td->o.size = v;
1095
1096         return 0;
1097 }
1098
1099 static int rw_verify(struct fio_option *o, void *data)
1100 {
1101         struct thread_data *td = data;
1102
1103         if (read_only && td_write(td)) {
1104                 log_err("fio: job <%s> has write bit set, but fio is in"
1105                         " read-only mode\n", td->o.name);
1106                 return 1;
1107         }
1108
1109         return 0;
1110 }
1111
1112 static int gtod_cpu_verify(struct fio_option *o, void *data)
1113 {
1114 #ifndef FIO_HAVE_CPU_AFFINITY
1115         struct thread_data *td = data;
1116
1117         if (td->o.gtod_cpu) {
1118                 log_err("fio: platform must support CPU affinity for"
1119                         "gettimeofday() offloading\n");
1120                 return 1;
1121         }
1122 #endif
1123
1124         return 0;
1125 }
1126
1127 /*
1128  * Option grouping
1129  */
1130 static struct opt_group fio_opt_groups[] = {
1131         {
1132                 .name   = "General",
1133                 .mask   = FIO_OPT_C_GENERAL,
1134         },
1135         {
1136                 .name   = "I/O",
1137                 .mask   = FIO_OPT_C_IO,
1138         },
1139         {
1140                 .name   = "File",
1141                 .mask   = FIO_OPT_C_FILE,
1142         },
1143         {
1144                 .name   = "Statistics",
1145                 .mask   = FIO_OPT_C_STAT,
1146         },
1147         {
1148                 .name   = "Logging",
1149                 .mask   = FIO_OPT_C_LOG,
1150         },
1151         {
1152                 .name   = "Profiles",
1153                 .mask   = FIO_OPT_C_PROFILE,
1154         },
1155         {
1156                 .name   = NULL,
1157         },
1158 };
1159
1160 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1161                                                unsigned int inv_mask)
1162 {
1163         struct opt_group *og;
1164         int i;
1165
1166         if (*mask == inv_mask || !*mask)
1167                 return NULL;
1168
1169         for (i = 0; ogs[i].name; i++) {
1170                 og = &ogs[i];
1171
1172                 if (*mask & og->mask) {
1173                         *mask &= ~(og->mask);
1174                         return og;
1175                 }
1176         }
1177
1178         return NULL;
1179 }
1180
1181 struct opt_group *opt_group_from_mask(unsigned int *mask)
1182 {
1183         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1184 }
1185
1186 static struct opt_group fio_opt_cat_groups[] = {
1187         {
1188                 .name   = "Latency profiling",
1189                 .mask   = FIO_OPT_G_LATPROF,
1190         },
1191         {
1192                 .name   = "Rate",
1193                 .mask   = FIO_OPT_G_RATE,
1194         },
1195         {
1196                 .name   = "Zone",
1197                 .mask   = FIO_OPT_G_ZONE,
1198         },
1199         {
1200                 .name   = "Read/write mix",
1201                 .mask   = FIO_OPT_G_RWMIX,
1202         },
1203         {
1204                 .name   = "Verify",
1205                 .mask   = FIO_OPT_G_VERIFY,
1206         },
1207         {
1208                 .name   = "Trim",
1209                 .mask   = FIO_OPT_G_TRIM,
1210         },
1211         {
1212                 .name   = "I/O Logging",
1213                 .mask   = FIO_OPT_G_IOLOG,
1214         },
1215         {
1216                 .name   = "I/O Depth",
1217                 .mask   = FIO_OPT_G_IO_DEPTH,
1218         },
1219         {
1220                 .name   = "I/O Flow",
1221                 .mask   = FIO_OPT_G_IO_FLOW,
1222         },
1223         {
1224                 .name   = "Description",
1225                 .mask   = FIO_OPT_G_DESC,
1226         },
1227         {
1228                 .name   = "Filename",
1229                 .mask   = FIO_OPT_G_FILENAME,
1230         },
1231         {
1232                 .name   = "General I/O",
1233                 .mask   = FIO_OPT_G_IO_BASIC,
1234         },
1235         {
1236                 .name   = "Cgroups",
1237                 .mask   = FIO_OPT_G_CGROUP,
1238         },
1239         {
1240                 .name   = "Runtime",
1241                 .mask   = FIO_OPT_G_RUNTIME,
1242         },
1243         {
1244                 .name   = "Process",
1245                 .mask   = FIO_OPT_G_PROCESS,
1246         },
1247         {
1248                 .name   = "Job credentials / priority",
1249                 .mask   = FIO_OPT_G_CRED,
1250         },
1251         {
1252                 .name   = "Clock settings",
1253                 .mask   = FIO_OPT_G_CLOCK,
1254         },
1255         {
1256                 .name   = "I/O Type",
1257                 .mask   = FIO_OPT_G_IO_TYPE,
1258         },
1259         {
1260                 .name   = "I/O Thinktime",
1261                 .mask   = FIO_OPT_G_THINKTIME,
1262         },
1263         {
1264                 .name   = "Randomizations",
1265                 .mask   = FIO_OPT_G_RANDOM,
1266         },
1267         {
1268                 .name   = "I/O buffers",
1269                 .mask   = FIO_OPT_G_IO_BUF,
1270         },
1271         {
1272                 .name   = "Tiobench profile",
1273                 .mask   = FIO_OPT_G_TIOBENCH,
1274         },
1275         {
1276                 .name   = "MTD",
1277                 .mask   = FIO_OPT_G_MTD,
1278         },
1279
1280         {
1281                 .name   = NULL,
1282         }
1283 };
1284
1285 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1286 {
1287         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1288 }
1289
1290 /*
1291  * Map of job/command line options
1292  */
1293 struct fio_option fio_options[FIO_MAX_OPTS] = {
1294         {
1295                 .name   = "description",
1296                 .lname  = "Description of job",
1297                 .type   = FIO_OPT_STR_STORE,
1298                 .off1   = td_var_offset(description),
1299                 .help   = "Text job description",
1300                 .category = FIO_OPT_C_GENERAL,
1301                 .group  = FIO_OPT_G_DESC,
1302         },
1303         {
1304                 .name   = "name",
1305                 .lname  = "Job name",
1306                 .type   = FIO_OPT_STR_STORE,
1307                 .off1   = td_var_offset(name),
1308                 .help   = "Name of this job",
1309                 .category = FIO_OPT_C_GENERAL,
1310                 .group  = FIO_OPT_G_DESC,
1311         },
1312         {
1313                 .name   = "filename",
1314                 .lname  = "Filename(s)",
1315                 .type   = FIO_OPT_STR_STORE,
1316                 .off1   = td_var_offset(filename),
1317                 .cb     = str_filename_cb,
1318                 .prio   = -1, /* must come after "directory" */
1319                 .help   = "File(s) to use for the workload",
1320                 .category = FIO_OPT_C_FILE,
1321                 .group  = FIO_OPT_G_FILENAME,
1322         },
1323         {
1324                 .name   = "directory",
1325                 .lname  = "Directory",
1326                 .type   = FIO_OPT_STR_STORE,
1327                 .off1   = td_var_offset(directory),
1328                 .cb     = str_directory_cb,
1329                 .help   = "Directory to store files in",
1330                 .category = FIO_OPT_C_FILE,
1331                 .group  = FIO_OPT_G_FILENAME,
1332         },
1333         {
1334                 .name   = "filename_format",
1335                 .type   = FIO_OPT_STR_STORE,
1336                 .off1   = td_var_offset(filename_format),
1337                 .prio   = -1, /* must come after "directory" */
1338                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1339                 .def    = "$jobname.$jobnum.$filenum",
1340                 .category = FIO_OPT_C_FILE,
1341                 .group  = FIO_OPT_G_FILENAME,
1342         },
1343         {
1344                 .name   = "lockfile",
1345                 .lname  = "Lockfile",
1346                 .type   = FIO_OPT_STR,
1347                 .off1   = td_var_offset(file_lock_mode),
1348                 .help   = "Lock file when doing IO to it",
1349                 .prio   = 1,
1350                 .parent = "filename",
1351                 .hide   = 0,
1352                 .def    = "none",
1353                 .category = FIO_OPT_C_FILE,
1354                 .group  = FIO_OPT_G_FILENAME,
1355                 .posval = {
1356                           { .ival = "none",
1357                             .oval = FILE_LOCK_NONE,
1358                             .help = "No file locking",
1359                           },
1360                           { .ival = "exclusive",
1361                             .oval = FILE_LOCK_EXCLUSIVE,
1362                             .help = "Exclusive file lock",
1363                           },
1364                           {
1365                             .ival = "readwrite",
1366                             .oval = FILE_LOCK_READWRITE,
1367                             .help = "Read vs write lock",
1368                           },
1369                 },
1370         },
1371         {
1372                 .name   = "opendir",
1373                 .lname  = "Open directory",
1374                 .type   = FIO_OPT_STR_STORE,
1375                 .off1   = td_var_offset(opendir),
1376                 .cb     = str_opendir_cb,
1377                 .help   = "Recursively add files from this directory and down",
1378                 .category = FIO_OPT_C_FILE,
1379                 .group  = FIO_OPT_G_FILENAME,
1380         },
1381         {
1382                 .name   = "rw",
1383                 .lname  = "Read/write",
1384                 .alias  = "readwrite",
1385                 .type   = FIO_OPT_STR,
1386                 .cb     = str_rw_cb,
1387                 .off1   = td_var_offset(td_ddir),
1388                 .help   = "IO direction",
1389                 .def    = "read",
1390                 .verify = rw_verify,
1391                 .category = FIO_OPT_C_IO,
1392                 .group  = FIO_OPT_G_IO_BASIC,
1393                 .posval = {
1394                           { .ival = "read",
1395                             .oval = TD_DDIR_READ,
1396                             .help = "Sequential read",
1397                           },
1398                           { .ival = "write",
1399                             .oval = TD_DDIR_WRITE,
1400                             .help = "Sequential write",
1401                           },
1402                           { .ival = "trim",
1403                             .oval = TD_DDIR_TRIM,
1404                             .help = "Sequential trim",
1405                           },
1406                           { .ival = "randread",
1407                             .oval = TD_DDIR_RANDREAD,
1408                             .help = "Random read",
1409                           },
1410                           { .ival = "randwrite",
1411                             .oval = TD_DDIR_RANDWRITE,
1412                             .help = "Random write",
1413                           },
1414                           { .ival = "randtrim",
1415                             .oval = TD_DDIR_RANDTRIM,
1416                             .help = "Random trim",
1417                           },
1418                           { .ival = "rw",
1419                             .oval = TD_DDIR_RW,
1420                             .help = "Sequential read and write mix",
1421                           },
1422                           { .ival = "readwrite",
1423                             .oval = TD_DDIR_RW,
1424                             .help = "Sequential read and write mix",
1425                           },
1426                           { .ival = "randrw",
1427                             .oval = TD_DDIR_RANDRW,
1428                             .help = "Random read and write mix"
1429                           },
1430                           { .ival = "trimwrite",
1431                             .oval = TD_DDIR_TRIMWRITE,
1432                             .help = "Trim and write mix, trims preceding writes"
1433                           },
1434                 },
1435         },
1436         {
1437                 .name   = "rw_sequencer",
1438                 .lname  = "RW Sequencer",
1439                 .type   = FIO_OPT_STR,
1440                 .off1   = td_var_offset(rw_seq),
1441                 .help   = "IO offset generator modifier",
1442                 .def    = "sequential",
1443                 .category = FIO_OPT_C_IO,
1444                 .group  = FIO_OPT_G_IO_BASIC,
1445                 .posval = {
1446                           { .ival = "sequential",
1447                             .oval = RW_SEQ_SEQ,
1448                             .help = "Generate sequential offsets",
1449                           },
1450                           { .ival = "identical",
1451                             .oval = RW_SEQ_IDENT,
1452                             .help = "Generate identical offsets",
1453                           },
1454                 },
1455         },
1456
1457         {
1458                 .name   = "ioengine",
1459                 .lname  = "IO Engine",
1460                 .type   = FIO_OPT_STR_STORE,
1461                 .off1   = td_var_offset(ioengine),
1462                 .help   = "IO engine to use",
1463                 .def    = FIO_PREFERRED_ENGINE,
1464                 .category = FIO_OPT_C_IO,
1465                 .group  = FIO_OPT_G_IO_BASIC,
1466                 .posval = {
1467                           { .ival = "sync",
1468                             .help = "Use read/write",
1469                           },
1470                           { .ival = "psync",
1471                             .help = "Use pread/pwrite",
1472                           },
1473                           { .ival = "vsync",
1474                             .help = "Use readv/writev",
1475                           },
1476 #ifdef CONFIG_PWRITEV
1477                           { .ival = "pvsync",
1478                             .help = "Use preadv/pwritev",
1479                           },
1480 #endif
1481 #ifdef CONFIG_LIBAIO
1482                           { .ival = "libaio",
1483                             .help = "Linux native asynchronous IO",
1484                           },
1485 #endif
1486 #ifdef CONFIG_POSIXAIO
1487                           { .ival = "posixaio",
1488                             .help = "POSIX asynchronous IO",
1489                           },
1490 #endif
1491 #ifdef CONFIG_SOLARISAIO
1492                           { .ival = "solarisaio",
1493                             .help = "Solaris native asynchronous IO",
1494                           },
1495 #endif
1496 #ifdef CONFIG_WINDOWSAIO
1497                           { .ival = "windowsaio",
1498                             .help = "Windows native asynchronous IO"
1499                           },
1500 #endif
1501 #ifdef CONFIG_RBD
1502                           { .ival = "rbd",
1503                             .help = "Rados Block Device asynchronous IO"
1504                           },
1505 #endif
1506                           { .ival = "mmap",
1507                             .help = "Memory mapped IO"
1508                           },
1509 #ifdef CONFIG_LINUX_SPLICE
1510                           { .ival = "splice",
1511                             .help = "splice/vmsplice based IO",
1512                           },
1513                           { .ival = "netsplice",
1514                             .help = "splice/vmsplice to/from the network",
1515                           },
1516 #endif
1517 #ifdef FIO_HAVE_SGIO
1518                           { .ival = "sg",
1519                             .help = "SCSI generic v3 IO",
1520                           },
1521 #endif
1522                           { .ival = "null",
1523                             .help = "Testing engine (no data transfer)",
1524                           },
1525                           { .ival = "net",
1526                             .help = "Network IO",
1527                           },
1528                           { .ival = "cpuio",
1529                             .help = "CPU cycle burner engine",
1530                           },
1531 #ifdef CONFIG_GUASI
1532                           { .ival = "guasi",
1533                             .help = "GUASI IO engine",
1534                           },
1535 #endif
1536 #ifdef FIO_HAVE_BINJECT
1537                           { .ival = "binject",
1538                             .help = "binject direct inject block engine",
1539                           },
1540 #endif
1541 #ifdef CONFIG_RDMA
1542                           { .ival = "rdma",
1543                             .help = "RDMA IO engine",
1544                           },
1545 #endif
1546 #ifdef CONFIG_FUSION_AW
1547                           { .ival = "fusion-aw-sync",
1548                             .help = "Fusion-io atomic write engine",
1549                           },
1550 #endif
1551 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1552                           { .ival = "e4defrag",
1553                             .help = "ext4 defrag engine",
1554                           },
1555 #endif
1556 #ifdef CONFIG_LINUX_FALLOCATE
1557                           { .ival = "falloc",
1558                             .help = "fallocate() file based engine",
1559                           },
1560 #endif
1561 #ifdef CONFIG_GFAPI
1562                           { .ival = "gfapi",
1563                             .help = "Glusterfs libgfapi(sync) based engine"
1564                           },
1565                           { .ival = "gfapi_async",
1566                             .help = "Glusterfs libgfapi(async) based engine"
1567                           },
1568 #endif
1569 #ifdef CONFIG_LIBHDFS
1570                           { .ival = "libhdfs",
1571                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1572                           },
1573 #endif
1574                           { .ival = "external",
1575                             .help = "Load external engine (append name)",
1576                           },
1577                 },
1578         },
1579         {
1580                 .name   = "iodepth",
1581                 .lname  = "IO Depth",
1582                 .type   = FIO_OPT_INT,
1583                 .off1   = td_var_offset(iodepth),
1584                 .help   = "Number of IO buffers to keep in flight",
1585                 .minval = 1,
1586                 .interval = 1,
1587                 .def    = "1",
1588                 .category = FIO_OPT_C_IO,
1589                 .group  = FIO_OPT_G_IO_BASIC,
1590         },
1591         {
1592                 .name   = "iodepth_batch",
1593                 .lname  = "IO Depth batch",
1594                 .alias  = "iodepth_batch_submit",
1595                 .type   = FIO_OPT_INT,
1596                 .off1   = td_var_offset(iodepth_batch),
1597                 .help   = "Number of IO buffers to submit in one go",
1598                 .parent = "iodepth",
1599                 .hide   = 1,
1600                 .minval = 1,
1601                 .interval = 1,
1602                 .def    = "1",
1603                 .category = FIO_OPT_C_IO,
1604                 .group  = FIO_OPT_G_IO_BASIC,
1605         },
1606         {
1607                 .name   = "iodepth_batch_complete",
1608                 .lname  = "IO Depth batch complete",
1609                 .type   = FIO_OPT_INT,
1610                 .off1   = td_var_offset(iodepth_batch_complete),
1611                 .help   = "Number of IO buffers to retrieve in one go",
1612                 .parent = "iodepth",
1613                 .hide   = 1,
1614                 .minval = 0,
1615                 .interval = 1,
1616                 .def    = "1",
1617                 .category = FIO_OPT_C_IO,
1618                 .group  = FIO_OPT_G_IO_BASIC,
1619         },
1620         {
1621                 .name   = "iodepth_low",
1622                 .lname  = "IO Depth batch low",
1623                 .type   = FIO_OPT_INT,
1624                 .off1   = td_var_offset(iodepth_low),
1625                 .help   = "Low water mark for queuing depth",
1626                 .parent = "iodepth",
1627                 .hide   = 1,
1628                 .interval = 1,
1629                 .category = FIO_OPT_C_IO,
1630                 .group  = FIO_OPT_G_IO_BASIC,
1631         },
1632         {
1633                 .name   = "io_submit_mode",
1634                 .lname  = "IO submit mode",
1635                 .type   = FIO_OPT_STR,
1636                 .off1   = td_var_offset(io_submit_mode),
1637                 .help   = "How IO submissions and completions are done",
1638                 .def    = "inline",
1639                 .category = FIO_OPT_C_IO,
1640                 .group  = FIO_OPT_G_IO_BASIC,
1641                 .posval = {
1642                           { .ival = "inline",
1643                             .oval = IO_MODE_INLINE,
1644                             .help = "Submit and complete IO inline",
1645                           },
1646                           { .ival = "offload",
1647                             .oval = IO_MODE_OFFLOAD,
1648                             .help = "Offload submit and complete to threads",
1649                           },
1650                 },
1651         },
1652         {
1653                 .name   = "size",
1654                 .lname  = "Size",
1655                 .type   = FIO_OPT_STR_VAL,
1656                 .cb     = str_size_cb,
1657                 .off1   = td_var_offset(size),
1658                 .help   = "Total size of device or files",
1659                 .interval = 1024 * 1024,
1660                 .category = FIO_OPT_C_IO,
1661                 .group  = FIO_OPT_G_INVALID,
1662         },
1663         {
1664                 .name   = "io_size",
1665                 .alias  = "io_limit",
1666                 .lname  = "IO Size",
1667                 .type   = FIO_OPT_STR_VAL,
1668                 .off1   = td_var_offset(io_limit),
1669                 .interval = 1024 * 1024,
1670                 .category = FIO_OPT_C_IO,
1671                 .group  = FIO_OPT_G_INVALID,
1672         },
1673         {
1674                 .name   = "fill_device",
1675                 .lname  = "Fill device",
1676                 .alias  = "fill_fs",
1677                 .type   = FIO_OPT_BOOL,
1678                 .off1   = td_var_offset(fill_device),
1679                 .help   = "Write until an ENOSPC error occurs",
1680                 .def    = "0",
1681                 .category = FIO_OPT_C_FILE,
1682                 .group  = FIO_OPT_G_INVALID,
1683         },
1684         {
1685                 .name   = "filesize",
1686                 .lname  = "File size",
1687                 .type   = FIO_OPT_STR_VAL,
1688                 .off1   = td_var_offset(file_size_low),
1689                 .off2   = td_var_offset(file_size_high),
1690                 .minval = 1,
1691                 .help   = "Size of individual files",
1692                 .interval = 1024 * 1024,
1693                 .category = FIO_OPT_C_FILE,
1694                 .group  = FIO_OPT_G_INVALID,
1695         },
1696         {
1697                 .name   = "file_append",
1698                 .lname  = "File append",
1699                 .type   = FIO_OPT_BOOL,
1700                 .off1   = td_var_offset(file_append),
1701                 .help   = "IO will start at the end of the file(s)",
1702                 .def    = "0",
1703                 .category = FIO_OPT_C_FILE,
1704                 .group  = FIO_OPT_G_INVALID,
1705         },
1706         {
1707                 .name   = "offset",
1708                 .lname  = "IO offset",
1709                 .alias  = "fileoffset",
1710                 .type   = FIO_OPT_STR_VAL,
1711                 .off1   = td_var_offset(start_offset),
1712                 .help   = "Start IO from this offset",
1713                 .def    = "0",
1714                 .interval = 1024 * 1024,
1715                 .category = FIO_OPT_C_IO,
1716                 .group  = FIO_OPT_G_INVALID,
1717         },
1718         {
1719                 .name   = "offset_increment",
1720                 .lname  = "IO offset increment",
1721                 .type   = FIO_OPT_STR_VAL,
1722                 .off1   = td_var_offset(offset_increment),
1723                 .help   = "What is the increment from one offset to the next",
1724                 .parent = "offset",
1725                 .hide   = 1,
1726                 .def    = "0",
1727                 .interval = 1024 * 1024,
1728                 .category = FIO_OPT_C_IO,
1729                 .group  = FIO_OPT_G_INVALID,
1730         },
1731         {
1732                 .name   = "number_ios",
1733                 .lname  = "Number of IOs to perform",
1734                 .type   = FIO_OPT_STR_VAL,
1735                 .off1   = td_var_offset(number_ios),
1736                 .help   = "Force job completion after this number of IOs",
1737                 .def    = "0",
1738                 .category = FIO_OPT_C_IO,
1739                 .group  = FIO_OPT_G_INVALID,
1740         },
1741         {
1742                 .name   = "bs",
1743                 .lname  = "Block size",
1744                 .alias  = "blocksize",
1745                 .type   = FIO_OPT_INT,
1746                 .off1   = td_var_offset(bs[DDIR_READ]),
1747                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1748                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1749                 .minval = 1,
1750                 .help   = "Block size unit",
1751                 .def    = "4k",
1752                 .parent = "rw",
1753                 .hide   = 1,
1754                 .interval = 512,
1755                 .category = FIO_OPT_C_IO,
1756                 .group  = FIO_OPT_G_INVALID,
1757         },
1758         {
1759                 .name   = "ba",
1760                 .lname  = "Block size align",
1761                 .alias  = "blockalign",
1762                 .type   = FIO_OPT_INT,
1763                 .off1   = td_var_offset(ba[DDIR_READ]),
1764                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1765                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1766                 .minval = 1,
1767                 .help   = "IO block offset alignment",
1768                 .parent = "rw",
1769                 .hide   = 1,
1770                 .interval = 512,
1771                 .category = FIO_OPT_C_IO,
1772                 .group  = FIO_OPT_G_INVALID,
1773         },
1774         {
1775                 .name   = "bsrange",
1776                 .lname  = "Block size range",
1777                 .alias  = "blocksize_range",
1778                 .type   = FIO_OPT_RANGE,
1779                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1780                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1781                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1782                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1783                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1784                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1785                 .minval = 1,
1786                 .help   = "Set block size range (in more detail than bs)",
1787                 .parent = "rw",
1788                 .hide   = 1,
1789                 .interval = 4096,
1790                 .category = FIO_OPT_C_IO,
1791                 .group  = FIO_OPT_G_INVALID,
1792         },
1793         {
1794                 .name   = "bssplit",
1795                 .lname  = "Block size split",
1796                 .type   = FIO_OPT_STR,
1797                 .cb     = str_bssplit_cb,
1798                 .off1   = td_var_offset(bssplit),
1799                 .help   = "Set a specific mix of block sizes",
1800                 .parent = "rw",
1801                 .hide   = 1,
1802                 .category = FIO_OPT_C_IO,
1803                 .group  = FIO_OPT_G_INVALID,
1804         },
1805         {
1806                 .name   = "bs_unaligned",
1807                 .lname  = "Block size unaligned",
1808                 .alias  = "blocksize_unaligned",
1809                 .type   = FIO_OPT_STR_SET,
1810                 .off1   = td_var_offset(bs_unaligned),
1811                 .help   = "Don't sector align IO buffer sizes",
1812                 .parent = "rw",
1813                 .hide   = 1,
1814                 .category = FIO_OPT_C_IO,
1815                 .group  = FIO_OPT_G_INVALID,
1816         },
1817         {
1818                 .name   = "bs_is_seq_rand",
1819                 .lname  = "Block size division is seq/random (not read/write)",
1820                 .type   = FIO_OPT_BOOL,
1821                 .off1   = td_var_offset(bs_is_seq_rand),
1822                 .help   = "Consider any blocksize setting to be sequential,random",
1823                 .def    = "0",
1824                 .parent = "blocksize",
1825                 .category = FIO_OPT_C_IO,
1826                 .group  = FIO_OPT_G_INVALID,
1827         },
1828         {
1829                 .name   = "randrepeat",
1830                 .lname  = "Random repeatable",
1831                 .type   = FIO_OPT_BOOL,
1832                 .off1   = td_var_offset(rand_repeatable),
1833                 .help   = "Use repeatable random IO pattern",
1834                 .def    = "1",
1835                 .parent = "rw",
1836                 .hide   = 1,
1837                 .category = FIO_OPT_C_IO,
1838                 .group  = FIO_OPT_G_RANDOM,
1839         },
1840         {
1841                 .name   = "randseed",
1842                 .lname  = "The random generator seed",
1843                 .type   = FIO_OPT_STR_VAL,
1844                 .off1   = td_var_offset(rand_seed),
1845                 .help   = "Set the random generator seed value",
1846                 .parent = "rw",
1847                 .category = FIO_OPT_C_IO,
1848                 .group  = FIO_OPT_G_RANDOM,
1849         },
1850         {
1851                 .name   = "use_os_rand",
1852                 .lname  = "Use OS random",
1853                 .type   = FIO_OPT_DEPRECATED,
1854                 .off1   = td_var_offset(dep_use_os_rand),
1855                 .category = FIO_OPT_C_IO,
1856                 .group  = FIO_OPT_G_RANDOM,
1857         },
1858         {
1859                 .name   = "norandommap",
1860                 .lname  = "No randommap",
1861                 .type   = FIO_OPT_STR_SET,
1862                 .off1   = td_var_offset(norandommap),
1863                 .help   = "Accept potential duplicate random blocks",
1864                 .parent = "rw",
1865                 .hide   = 1,
1866                 .hide_on_set = 1,
1867                 .category = FIO_OPT_C_IO,
1868                 .group  = FIO_OPT_G_RANDOM,
1869         },
1870         {
1871                 .name   = "softrandommap",
1872                 .lname  = "Soft randommap",
1873                 .type   = FIO_OPT_BOOL,
1874                 .off1   = td_var_offset(softrandommap),
1875                 .help   = "Set norandommap if randommap allocation fails",
1876                 .parent = "norandommap",
1877                 .hide   = 1,
1878                 .def    = "0",
1879                 .category = FIO_OPT_C_IO,
1880                 .group  = FIO_OPT_G_RANDOM,
1881         },
1882         {
1883                 .name   = "random_generator",
1884                 .type   = FIO_OPT_STR,
1885                 .off1   = td_var_offset(random_generator),
1886                 .help   = "Type of random number generator to use",
1887                 .def    = "tausworthe",
1888                 .posval = {
1889                           { .ival = "tausworthe",
1890                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1891                             .help = "Strong Tausworthe generator",
1892                           },
1893                           { .ival = "lfsr",
1894                             .oval = FIO_RAND_GEN_LFSR,
1895                             .help = "Variable length LFSR",
1896                           },
1897                 },
1898                 .category = FIO_OPT_C_IO,
1899                 .group  = FIO_OPT_G_RANDOM,
1900         },
1901         {
1902                 .name   = "random_distribution",
1903                 .type   = FIO_OPT_STR,
1904                 .off1   = td_var_offset(random_distribution),
1905                 .cb     = str_random_distribution_cb,
1906                 .help   = "Random offset distribution generator",
1907                 .def    = "random",
1908                 .posval = {
1909                           { .ival = "random",
1910                             .oval = FIO_RAND_DIST_RANDOM,
1911                             .help = "Completely random",
1912                           },
1913                           { .ival = "zipf",
1914                             .oval = FIO_RAND_DIST_ZIPF,
1915                             .help = "Zipf distribution",
1916                           },
1917                           { .ival = "pareto",
1918                             .oval = FIO_RAND_DIST_PARETO,
1919                             .help = "Pareto distribution",
1920                           },
1921                           { .ival = "normal",
1922                             .oval = FIO_RAND_DIST_GAUSS,
1923                             .help = "Normal (gaussian) distribution",
1924                           },
1925                 },
1926                 .category = FIO_OPT_C_IO,
1927                 .group  = FIO_OPT_G_RANDOM,
1928         },
1929         {
1930                 .name   = "percentage_random",
1931                 .lname  = "Percentage Random",
1932                 .type   = FIO_OPT_INT,
1933                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1934                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1935                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1936                 .maxval = 100,
1937                 .help   = "Percentage of seq/random mix that should be random",
1938                 .def    = "100,100,100",
1939                 .interval = 5,
1940                 .inverse = "percentage_sequential",
1941                 .category = FIO_OPT_C_IO,
1942                 .group  = FIO_OPT_G_RANDOM,
1943         },
1944         {
1945                 .name   = "percentage_sequential",
1946                 .lname  = "Percentage Sequential",
1947                 .type   = FIO_OPT_DEPRECATED,
1948                 .category = FIO_OPT_C_IO,
1949                 .group  = FIO_OPT_G_RANDOM,
1950         },
1951         {
1952                 .name   = "allrandrepeat",
1953                 .type   = FIO_OPT_BOOL,
1954                 .off1   = td_var_offset(allrand_repeatable),
1955                 .help   = "Use repeatable random numbers for everything",
1956                 .def    = "0",
1957                 .category = FIO_OPT_C_IO,
1958                 .group  = FIO_OPT_G_RANDOM,
1959         },
1960         {
1961                 .name   = "nrfiles",
1962                 .lname  = "Number of files",
1963                 .alias  = "nr_files",
1964                 .type   = FIO_OPT_INT,
1965                 .off1   = td_var_offset(nr_files),
1966                 .help   = "Split job workload between this number of files",
1967                 .def    = "1",
1968                 .interval = 1,
1969                 .category = FIO_OPT_C_FILE,
1970                 .group  = FIO_OPT_G_INVALID,
1971         },
1972         {
1973                 .name   = "openfiles",
1974                 .lname  = "Number of open files",
1975                 .type   = FIO_OPT_INT,
1976                 .off1   = td_var_offset(open_files),
1977                 .help   = "Number of files to keep open at the same time",
1978                 .category = FIO_OPT_C_FILE,
1979                 .group  = FIO_OPT_G_INVALID,
1980         },
1981         {
1982                 .name   = "file_service_type",
1983                 .lname  = "File service type",
1984                 .type   = FIO_OPT_STR,
1985                 .cb     = str_fst_cb,
1986                 .off1   = td_var_offset(file_service_type),
1987                 .help   = "How to select which file to service next",
1988                 .def    = "roundrobin",
1989                 .category = FIO_OPT_C_FILE,
1990                 .group  = FIO_OPT_G_INVALID,
1991                 .posval = {
1992                           { .ival = "random",
1993                             .oval = FIO_FSERVICE_RANDOM,
1994                             .help = "Choose a file at random",
1995                           },
1996                           { .ival = "roundrobin",
1997                             .oval = FIO_FSERVICE_RR,
1998                             .help = "Round robin select files",
1999                           },
2000                           { .ival = "sequential",
2001                             .oval = FIO_FSERVICE_SEQ,
2002                             .help = "Finish one file before moving to the next",
2003                           },
2004                 },
2005                 .parent = "nrfiles",
2006                 .hide   = 1,
2007         },
2008 #ifdef CONFIG_POSIX_FALLOCATE
2009         {
2010                 .name   = "fallocate",
2011                 .lname  = "Fallocate",
2012                 .type   = FIO_OPT_STR,
2013                 .off1   = td_var_offset(fallocate_mode),
2014                 .help   = "Whether pre-allocation is performed when laying out files",
2015                 .def    = "posix",
2016                 .category = FIO_OPT_C_FILE,
2017                 .group  = FIO_OPT_G_INVALID,
2018                 .posval = {
2019                           { .ival = "none",
2020                             .oval = FIO_FALLOCATE_NONE,
2021                             .help = "Do not pre-allocate space",
2022                           },
2023                           { .ival = "posix",
2024                             .oval = FIO_FALLOCATE_POSIX,
2025                             .help = "Use posix_fallocate()",
2026                           },
2027 #ifdef CONFIG_LINUX_FALLOCATE
2028                           { .ival = "keep",
2029                             .oval = FIO_FALLOCATE_KEEP_SIZE,
2030                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
2031                           },
2032 #endif
2033                           /* Compatibility with former boolean values */
2034                           { .ival = "0",
2035                             .oval = FIO_FALLOCATE_NONE,
2036                             .help = "Alias for 'none'",
2037                           },
2038                           { .ival = "1",
2039                             .oval = FIO_FALLOCATE_POSIX,
2040                             .help = "Alias for 'posix'",
2041                           },
2042                 },
2043         },
2044 #endif  /* CONFIG_POSIX_FALLOCATE */
2045         {
2046                 .name   = "fadvise_hint",
2047                 .lname  = "Fadvise hint",
2048                 .type   = FIO_OPT_BOOL,
2049                 .off1   = td_var_offset(fadvise_hint),
2050                 .help   = "Use fadvise() to advise the kernel on IO pattern",
2051                 .def    = "1",
2052                 .category = FIO_OPT_C_FILE,
2053                 .group  = FIO_OPT_G_INVALID,
2054         },
2055 #ifdef FIO_HAVE_STREAMID
2056         {
2057                 .name   = "fadvise_stream",
2058                 .lname  = "Fadvise stream",
2059                 .type   = FIO_OPT_INT,
2060                 .off1   = td_var_offset(fadvise_stream),
2061                 .help   = "Use fadvise() to set stream ID",
2062                 .category = FIO_OPT_C_FILE,
2063                 .group  = FIO_OPT_G_INVALID,
2064         },
2065 #endif
2066         {
2067                 .name   = "fsync",
2068                 .lname  = "Fsync",
2069                 .type   = FIO_OPT_INT,
2070                 .off1   = td_var_offset(fsync_blocks),
2071                 .help   = "Issue fsync for writes every given number of blocks",
2072                 .def    = "0",
2073                 .interval = 1,
2074                 .category = FIO_OPT_C_FILE,
2075                 .group  = FIO_OPT_G_INVALID,
2076         },
2077         {
2078                 .name   = "fdatasync",
2079                 .lname  = "Fdatasync",
2080                 .type   = FIO_OPT_INT,
2081                 .off1   = td_var_offset(fdatasync_blocks),
2082                 .help   = "Issue fdatasync for writes every given number of blocks",
2083                 .def    = "0",
2084                 .interval = 1,
2085                 .category = FIO_OPT_C_FILE,
2086                 .group  = FIO_OPT_G_INVALID,
2087         },
2088         {
2089                 .name   = "write_barrier",
2090                 .lname  = "Write barrier",
2091                 .type   = FIO_OPT_INT,
2092                 .off1   = td_var_offset(barrier_blocks),
2093                 .help   = "Make every Nth write a barrier write",
2094                 .def    = "0",
2095                 .interval = 1,
2096                 .category = FIO_OPT_C_IO,
2097                 .group  = FIO_OPT_G_INVALID,
2098         },
2099 #ifdef CONFIG_SYNC_FILE_RANGE
2100         {
2101                 .name   = "sync_file_range",
2102                 .lname  = "Sync file range",
2103                 .posval = {
2104                           { .ival = "wait_before",
2105                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2106                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2107                             .orval  = 1,
2108                           },
2109                           { .ival = "write",
2110                             .oval = SYNC_FILE_RANGE_WRITE,
2111                             .help = "SYNC_FILE_RANGE_WRITE",
2112                             .orval  = 1,
2113                           },
2114                           {
2115                             .ival = "wait_after",
2116                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2117                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2118                             .orval  = 1,
2119                           },
2120                 },
2121                 .type   = FIO_OPT_STR_MULTI,
2122                 .cb     = str_sfr_cb,
2123                 .off1   = td_var_offset(sync_file_range),
2124                 .help   = "Use sync_file_range()",
2125                 .category = FIO_OPT_C_FILE,
2126                 .group  = FIO_OPT_G_INVALID,
2127         },
2128 #endif
2129         {
2130                 .name   = "direct",
2131                 .lname  = "Direct I/O",
2132                 .type   = FIO_OPT_BOOL,
2133                 .off1   = td_var_offset(odirect),
2134                 .help   = "Use O_DIRECT IO (negates buffered)",
2135                 .def    = "0",
2136                 .inverse = "buffered",
2137                 .category = FIO_OPT_C_IO,
2138                 .group  = FIO_OPT_G_IO_TYPE,
2139         },
2140         {
2141                 .name   = "atomic",
2142                 .lname  = "Atomic I/O",
2143                 .type   = FIO_OPT_BOOL,
2144                 .off1   = td_var_offset(oatomic),
2145                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2146                 .def    = "0",
2147                 .category = FIO_OPT_C_IO,
2148                 .group  = FIO_OPT_G_IO_TYPE,
2149         },
2150         {
2151                 .name   = "buffered",
2152                 .lname  = "Buffered I/O",
2153                 .type   = FIO_OPT_BOOL,
2154                 .off1   = td_var_offset(odirect),
2155                 .neg    = 1,
2156                 .help   = "Use buffered IO (negates direct)",
2157                 .def    = "1",
2158                 .inverse = "direct",
2159                 .category = FIO_OPT_C_IO,
2160                 .group  = FIO_OPT_G_IO_TYPE,
2161         },
2162         {
2163                 .name   = "overwrite",
2164                 .lname  = "Overwrite",
2165                 .type   = FIO_OPT_BOOL,
2166                 .off1   = td_var_offset(overwrite),
2167                 .help   = "When writing, set whether to overwrite current data",
2168                 .def    = "0",
2169                 .category = FIO_OPT_C_FILE,
2170                 .group  = FIO_OPT_G_INVALID,
2171         },
2172         {
2173                 .name   = "loops",
2174                 .lname  = "Loops",
2175                 .type   = FIO_OPT_INT,
2176                 .off1   = td_var_offset(loops),
2177                 .help   = "Number of times to run the job",
2178                 .def    = "1",
2179                 .interval = 1,
2180                 .category = FIO_OPT_C_GENERAL,
2181                 .group  = FIO_OPT_G_RUNTIME,
2182         },
2183         {
2184                 .name   = "numjobs",
2185                 .lname  = "Number of jobs",
2186                 .type   = FIO_OPT_INT,
2187                 .off1   = td_var_offset(numjobs),
2188                 .help   = "Duplicate this job this many times",
2189                 .def    = "1",
2190                 .interval = 1,
2191                 .category = FIO_OPT_C_GENERAL,
2192                 .group  = FIO_OPT_G_RUNTIME,
2193         },
2194         {
2195                 .name   = "startdelay",
2196                 .lname  = "Start delay",
2197                 .type   = FIO_OPT_STR_VAL_TIME,
2198                 .off1   = td_var_offset(start_delay),
2199                 .off2   = td_var_offset(start_delay_high),
2200                 .help   = "Only start job when this period has passed",
2201                 .def    = "0",
2202                 .is_seconds = 1,
2203                 .is_time = 1,
2204                 .category = FIO_OPT_C_GENERAL,
2205                 .group  = FIO_OPT_G_RUNTIME,
2206         },
2207         {
2208                 .name   = "runtime",
2209                 .lname  = "Runtime",
2210                 .alias  = "timeout",
2211                 .type   = FIO_OPT_STR_VAL_TIME,
2212                 .off1   = td_var_offset(timeout),
2213                 .help   = "Stop workload when this amount of time has passed",
2214                 .def    = "0",
2215                 .is_seconds = 1,
2216                 .is_time = 1,
2217                 .category = FIO_OPT_C_GENERAL,
2218                 .group  = FIO_OPT_G_RUNTIME,
2219         },
2220         {
2221                 .name   = "time_based",
2222                 .lname  = "Time based",
2223                 .type   = FIO_OPT_STR_SET,
2224                 .off1   = td_var_offset(time_based),
2225                 .help   = "Keep running until runtime/timeout is met",
2226                 .category = FIO_OPT_C_GENERAL,
2227                 .group  = FIO_OPT_G_RUNTIME,
2228         },
2229         {
2230                 .name   = "verify_only",
2231                 .lname  = "Verify only",
2232                 .type   = FIO_OPT_STR_SET,
2233                 .off1   = td_var_offset(verify_only),
2234                 .help   = "Verifies previously written data is still valid",
2235                 .category = FIO_OPT_C_GENERAL,
2236                 .group  = FIO_OPT_G_RUNTIME,
2237         },
2238         {
2239                 .name   = "ramp_time",
2240                 .lname  = "Ramp time",
2241                 .type   = FIO_OPT_STR_VAL_TIME,
2242                 .off1   = td_var_offset(ramp_time),
2243                 .help   = "Ramp up time before measuring performance",
2244                 .is_seconds = 1,
2245                 .is_time = 1,
2246                 .category = FIO_OPT_C_GENERAL,
2247                 .group  = FIO_OPT_G_RUNTIME,
2248         },
2249         {
2250                 .name   = "clocksource",
2251                 .lname  = "Clock source",
2252                 .type   = FIO_OPT_STR,
2253                 .cb     = fio_clock_source_cb,
2254                 .off1   = td_var_offset(clocksource),
2255                 .help   = "What type of timing source to use",
2256                 .category = FIO_OPT_C_GENERAL,
2257                 .group  = FIO_OPT_G_CLOCK,
2258                 .posval = {
2259 #ifdef CONFIG_GETTIMEOFDAY
2260                           { .ival = "gettimeofday",
2261                             .oval = CS_GTOD,
2262                             .help = "Use gettimeofday(2) for timing",
2263                           },
2264 #endif
2265 #ifdef CONFIG_CLOCK_GETTIME
2266                           { .ival = "clock_gettime",
2267                             .oval = CS_CGETTIME,
2268                             .help = "Use clock_gettime(2) for timing",
2269                           },
2270 #endif
2271 #ifdef ARCH_HAVE_CPU_CLOCK
2272                           { .ival = "cpu",
2273                             .oval = CS_CPUCLOCK,
2274                             .help = "Use CPU private clock",
2275                           },
2276 #endif
2277                 },
2278         },
2279         {
2280                 .name   = "mem",
2281                 .alias  = "iomem",
2282                 .lname  = "I/O Memory",
2283                 .type   = FIO_OPT_STR,
2284                 .cb     = str_mem_cb,
2285                 .off1   = td_var_offset(mem_type),
2286                 .help   = "Backing type for IO buffers",
2287                 .def    = "malloc",
2288                 .category = FIO_OPT_C_IO,
2289                 .group  = FIO_OPT_G_INVALID,
2290                 .posval = {
2291                           { .ival = "malloc",
2292                             .oval = MEM_MALLOC,
2293                             .help = "Use malloc(3) for IO buffers",
2294                           },
2295 #ifndef CONFIG_NO_SHM
2296                           { .ival = "shm",
2297                             .oval = MEM_SHM,
2298                             .help = "Use shared memory segments for IO buffers",
2299                           },
2300 #ifdef FIO_HAVE_HUGETLB
2301                           { .ival = "shmhuge",
2302                             .oval = MEM_SHMHUGE,
2303                             .help = "Like shm, but use huge pages",
2304                           },
2305 #endif
2306 #endif
2307                           { .ival = "mmap",
2308                             .oval = MEM_MMAP,
2309                             .help = "Use mmap(2) (file or anon) for IO buffers",
2310                           },
2311 #ifdef FIO_HAVE_HUGETLB
2312                           { .ival = "mmaphuge",
2313                             .oval = MEM_MMAPHUGE,
2314                             .help = "Like mmap, but use huge pages",
2315                           },
2316 #endif
2317                   },
2318         },
2319         {
2320                 .name   = "iomem_align",
2321                 .alias  = "mem_align",
2322                 .lname  = "I/O memory alignment",
2323                 .type   = FIO_OPT_INT,
2324                 .off1   = td_var_offset(mem_align),
2325                 .minval = 0,
2326                 .help   = "IO memory buffer offset alignment",
2327                 .def    = "0",
2328                 .parent = "iomem",
2329                 .hide   = 1,
2330                 .category = FIO_OPT_C_IO,
2331                 .group  = FIO_OPT_G_INVALID,
2332         },
2333         {
2334                 .name   = "verify",
2335                 .lname  = "Verify",
2336                 .type   = FIO_OPT_STR,
2337                 .off1   = td_var_offset(verify),
2338                 .help   = "Verify data written",
2339                 .def    = "0",
2340                 .category = FIO_OPT_C_IO,
2341                 .group  = FIO_OPT_G_VERIFY,
2342                 .posval = {
2343                           { .ival = "0",
2344                             .oval = VERIFY_NONE,
2345                             .help = "Don't do IO verification",
2346                           },
2347                           { .ival = "md5",
2348                             .oval = VERIFY_MD5,
2349                             .help = "Use md5 checksums for verification",
2350                           },
2351                           { .ival = "crc64",
2352                             .oval = VERIFY_CRC64,
2353                             .help = "Use crc64 checksums for verification",
2354                           },
2355                           { .ival = "crc32",
2356                             .oval = VERIFY_CRC32,
2357                             .help = "Use crc32 checksums for verification",
2358                           },
2359                           { .ival = "crc32c-intel",
2360                             .oval = VERIFY_CRC32C,
2361                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2362                           },
2363                           { .ival = "crc32c",
2364                             .oval = VERIFY_CRC32C,
2365                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2366                           },
2367                           { .ival = "crc16",
2368                             .oval = VERIFY_CRC16,
2369                             .help = "Use crc16 checksums for verification",
2370                           },
2371                           { .ival = "crc7",
2372                             .oval = VERIFY_CRC7,
2373                             .help = "Use crc7 checksums for verification",
2374                           },
2375                           { .ival = "sha1",
2376                             .oval = VERIFY_SHA1,
2377                             .help = "Use sha1 checksums for verification",
2378                           },
2379                           { .ival = "sha256",
2380                             .oval = VERIFY_SHA256,
2381                             .help = "Use sha256 checksums for verification",
2382                           },
2383                           { .ival = "sha512",
2384                             .oval = VERIFY_SHA512,
2385                             .help = "Use sha512 checksums for verification",
2386                           },
2387                           { .ival = "xxhash",
2388                             .oval = VERIFY_XXHASH,
2389                             .help = "Use xxhash checksums for verification",
2390                           },
2391                           { .ival = "meta",
2392                             .oval = VERIFY_META,
2393                             .help = "Use io information",
2394                           },
2395                           {
2396                             .ival = "null",
2397                             .oval = VERIFY_NULL,
2398                             .help = "Pretend to verify",
2399                           },
2400                 },
2401         },
2402         {
2403                 .name   = "do_verify",
2404                 .lname  = "Perform verify step",
2405                 .type   = FIO_OPT_BOOL,
2406                 .off1   = td_var_offset(do_verify),
2407                 .help   = "Run verification stage after write",
2408                 .def    = "1",
2409                 .parent = "verify",
2410                 .hide   = 1,
2411                 .category = FIO_OPT_C_IO,
2412                 .group  = FIO_OPT_G_VERIFY,
2413         },
2414         {
2415                 .name   = "verifysort",
2416                 .lname  = "Verify sort",
2417                 .type   = FIO_OPT_BOOL,
2418                 .off1   = td_var_offset(verifysort),
2419                 .help   = "Sort written verify blocks for read back",
2420                 .def    = "1",
2421                 .parent = "verify",
2422                 .hide   = 1,
2423                 .category = FIO_OPT_C_IO,
2424                 .group  = FIO_OPT_G_VERIFY,
2425         },
2426         {
2427                 .name   = "verifysort_nr",
2428                 .type   = FIO_OPT_INT,
2429                 .off1   = td_var_offset(verifysort_nr),
2430                 .help   = "Pre-load and sort verify blocks for a read workload",
2431                 .minval = 0,
2432                 .maxval = 131072,
2433                 .def    = "1024",
2434                 .parent = "verify",
2435                 .category = FIO_OPT_C_IO,
2436                 .group  = FIO_OPT_G_VERIFY,
2437         },
2438         {
2439                 .name   = "verify_interval",
2440                 .lname  = "Verify interval",
2441                 .type   = FIO_OPT_INT,
2442                 .off1   = td_var_offset(verify_interval),
2443                 .minval = 2 * sizeof(struct verify_header),
2444                 .help   = "Store verify buffer header every N bytes",
2445                 .parent = "verify",
2446                 .hide   = 1,
2447                 .interval = 2 * sizeof(struct verify_header),
2448                 .category = FIO_OPT_C_IO,
2449                 .group  = FIO_OPT_G_VERIFY,
2450         },
2451         {
2452                 .name   = "verify_offset",
2453                 .lname  = "Verify offset",
2454                 .type   = FIO_OPT_INT,
2455                 .help   = "Offset verify header location by N bytes",
2456                 .off1   = td_var_offset(verify_offset),
2457                 .minval = sizeof(struct verify_header),
2458                 .parent = "verify",
2459                 .hide   = 1,
2460                 .category = FIO_OPT_C_IO,
2461                 .group  = FIO_OPT_G_VERIFY,
2462         },
2463         {
2464                 .name   = "verify_pattern",
2465                 .lname  = "Verify pattern",
2466                 .type   = FIO_OPT_STR,
2467                 .cb     = str_verify_pattern_cb,
2468                 .off1   = td_var_offset(verify_pattern),
2469                 .help   = "Fill pattern for IO buffers",
2470                 .parent = "verify",
2471                 .hide   = 1,
2472                 .category = FIO_OPT_C_IO,
2473                 .group  = FIO_OPT_G_VERIFY,
2474         },
2475         {
2476                 .name   = "verify_fatal",
2477                 .lname  = "Verify fatal",
2478                 .type   = FIO_OPT_BOOL,
2479                 .off1   = td_var_offset(verify_fatal),
2480                 .def    = "0",
2481                 .help   = "Exit on a single verify failure, don't continue",
2482                 .parent = "verify",
2483                 .hide   = 1,
2484                 .category = FIO_OPT_C_IO,
2485                 .group  = FIO_OPT_G_VERIFY,
2486         },
2487         {
2488                 .name   = "verify_dump",
2489                 .lname  = "Verify dump",
2490                 .type   = FIO_OPT_BOOL,
2491                 .off1   = td_var_offset(verify_dump),
2492                 .def    = "0",
2493                 .help   = "Dump contents of good and bad blocks on failure",
2494                 .parent = "verify",
2495                 .hide   = 1,
2496                 .category = FIO_OPT_C_IO,
2497                 .group  = FIO_OPT_G_VERIFY,
2498         },
2499         {
2500                 .name   = "verify_async",
2501                 .lname  = "Verify asynchronously",
2502                 .type   = FIO_OPT_INT,
2503                 .off1   = td_var_offset(verify_async),
2504                 .def    = "0",
2505                 .help   = "Number of async verifier threads to use",
2506                 .parent = "verify",
2507                 .hide   = 1,
2508                 .category = FIO_OPT_C_IO,
2509                 .group  = FIO_OPT_G_VERIFY,
2510         },
2511         {
2512                 .name   = "verify_backlog",
2513                 .lname  = "Verify backlog",
2514                 .type   = FIO_OPT_STR_VAL,
2515                 .off1   = td_var_offset(verify_backlog),
2516                 .help   = "Verify after this number of blocks are written",
2517                 .parent = "verify",
2518                 .hide   = 1,
2519                 .category = FIO_OPT_C_IO,
2520                 .group  = FIO_OPT_G_VERIFY,
2521         },
2522         {
2523                 .name   = "verify_backlog_batch",
2524                 .lname  = "Verify backlog batch",
2525                 .type   = FIO_OPT_INT,
2526                 .off1   = td_var_offset(verify_batch),
2527                 .help   = "Verify this number of IO blocks",
2528                 .parent = "verify",
2529                 .hide   = 1,
2530                 .category = FIO_OPT_C_IO,
2531                 .group  = FIO_OPT_G_VERIFY,
2532         },
2533 #ifdef FIO_HAVE_CPU_AFFINITY
2534         {
2535                 .name   = "verify_async_cpus",
2536                 .lname  = "Async verify CPUs",
2537                 .type   = FIO_OPT_STR,
2538                 .cb     = str_verify_cpus_allowed_cb,
2539                 .off1   = td_var_offset(verify_cpumask),
2540                 .help   = "Set CPUs allowed for async verify threads",
2541                 .parent = "verify_async",
2542                 .hide   = 1,
2543                 .category = FIO_OPT_C_IO,
2544                 .group  = FIO_OPT_G_VERIFY,
2545         },
2546 #endif
2547         {
2548                 .name   = "experimental_verify",
2549                 .off1   = td_var_offset(experimental_verify),
2550                 .type   = FIO_OPT_BOOL,
2551                 .help   = "Enable experimental verification",
2552                 .parent = "verify",
2553                 .category = FIO_OPT_C_IO,
2554                 .group  = FIO_OPT_G_VERIFY,
2555         },
2556         {
2557                 .name   = "verify_state_load",
2558                 .lname  = "Load verify state",
2559                 .off1   = td_var_offset(verify_state),
2560                 .type   = FIO_OPT_BOOL,
2561                 .help   = "Load verify termination state",
2562                 .parent = "verify",
2563                 .category = FIO_OPT_C_IO,
2564                 .group  = FIO_OPT_G_VERIFY,
2565         },
2566         {
2567                 .name   = "verify_state_save",
2568                 .lname  = "Save verify state",
2569                 .off1   = td_var_offset(verify_state_save),
2570                 .type   = FIO_OPT_BOOL,
2571                 .def    = "1",
2572                 .help   = "Save verify state on termination",
2573                 .parent = "verify",
2574                 .category = FIO_OPT_C_IO,
2575                 .group  = FIO_OPT_G_VERIFY,
2576         },
2577 #ifdef FIO_HAVE_TRIM
2578         {
2579                 .name   = "trim_percentage",
2580                 .lname  = "Trim percentage",
2581                 .type   = FIO_OPT_INT,
2582                 .off1   = td_var_offset(trim_percentage),
2583                 .minval = 0,
2584                 .maxval = 100,
2585                 .help   = "Number of verify blocks to discard/trim",
2586                 .parent = "verify",
2587                 .def    = "0",
2588                 .interval = 1,
2589                 .hide   = 1,
2590                 .category = FIO_OPT_C_IO,
2591                 .group  = FIO_OPT_G_TRIM,
2592         },
2593         {
2594                 .name   = "trim_verify_zero",
2595                 .lname  = "Verify trim zero",
2596                 .type   = FIO_OPT_BOOL,
2597                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2598                 .off1   = td_var_offset(trim_zero),
2599                 .parent = "trim_percentage",
2600                 .hide   = 1,
2601                 .def    = "1",
2602                 .category = FIO_OPT_C_IO,
2603                 .group  = FIO_OPT_G_TRIM,
2604         },
2605         {
2606                 .name   = "trim_backlog",
2607                 .lname  = "Trim backlog",
2608                 .type   = FIO_OPT_STR_VAL,
2609                 .off1   = td_var_offset(trim_backlog),
2610                 .help   = "Trim after this number of blocks are written",
2611                 .parent = "trim_percentage",
2612                 .hide   = 1,
2613                 .interval = 1,
2614                 .category = FIO_OPT_C_IO,
2615                 .group  = FIO_OPT_G_TRIM,
2616         },
2617         {
2618                 .name   = "trim_backlog_batch",
2619                 .lname  = "Trim backlog batch",
2620                 .type   = FIO_OPT_INT,
2621                 .off1   = td_var_offset(trim_batch),
2622                 .help   = "Trim this number of IO blocks",
2623                 .parent = "trim_percentage",
2624                 .hide   = 1,
2625                 .interval = 1,
2626                 .category = FIO_OPT_C_IO,
2627                 .group  = FIO_OPT_G_TRIM,
2628         },
2629 #endif
2630         {
2631                 .name   = "write_iolog",
2632                 .lname  = "Write I/O log",
2633                 .type   = FIO_OPT_STR_STORE,
2634                 .off1   = td_var_offset(write_iolog_file),
2635                 .help   = "Store IO pattern to file",
2636                 .category = FIO_OPT_C_IO,
2637                 .group  = FIO_OPT_G_IOLOG,
2638         },
2639         {
2640                 .name   = "read_iolog",
2641                 .lname  = "Read I/O log",
2642                 .type   = FIO_OPT_STR_STORE,
2643                 .off1   = td_var_offset(read_iolog_file),
2644                 .help   = "Playback IO pattern from file",
2645                 .category = FIO_OPT_C_IO,
2646                 .group  = FIO_OPT_G_IOLOG,
2647         },
2648         {
2649                 .name   = "replay_no_stall",
2650                 .lname  = "Don't stall on replay",
2651                 .type   = FIO_OPT_BOOL,
2652                 .off1   = td_var_offset(no_stall),
2653                 .def    = "0",
2654                 .parent = "read_iolog",
2655                 .hide   = 1,
2656                 .help   = "Playback IO pattern file as fast as possible without stalls",
2657                 .category = FIO_OPT_C_IO,
2658                 .group  = FIO_OPT_G_IOLOG,
2659         },
2660         {
2661                 .name   = "replay_redirect",
2662                 .lname  = "Redirect device for replay",
2663                 .type   = FIO_OPT_STR_STORE,
2664                 .off1   = td_var_offset(replay_redirect),
2665                 .parent = "read_iolog",
2666                 .hide   = 1,
2667                 .help   = "Replay all I/O onto this device, regardless of trace device",
2668                 .category = FIO_OPT_C_IO,
2669                 .group  = FIO_OPT_G_IOLOG,
2670         },
2671         {
2672                 .name   = "replay_scale",
2673                 .lname  = "Replace offset scale factor",
2674                 .type   = FIO_OPT_INT,
2675                 .off1   = td_var_offset(replay_scale),
2676                 .parent = "read_iolog",
2677                 .def    = "1",
2678                 .help   = "Align offsets to this blocksize",
2679                 .category = FIO_OPT_C_IO,
2680                 .group  = FIO_OPT_G_IOLOG,
2681         },
2682         {
2683                 .name   = "replay_align",
2684                 .lname  = "Replace alignment",
2685                 .type   = FIO_OPT_INT,
2686                 .off1   = td_var_offset(replay_align),
2687                 .parent = "read_iolog",
2688                 .help   = "Scale offset down by this factor",
2689                 .category = FIO_OPT_C_IO,
2690                 .group  = FIO_OPT_G_IOLOG,
2691                 .pow2   = 1,
2692         },
2693         {
2694                 .name   = "exec_prerun",
2695                 .lname  = "Pre-execute runnable",
2696                 .type   = FIO_OPT_STR_STORE,
2697                 .off1   = td_var_offset(exec_prerun),
2698                 .help   = "Execute this file prior to running job",
2699                 .category = FIO_OPT_C_GENERAL,
2700                 .group  = FIO_OPT_G_INVALID,
2701         },
2702         {
2703                 .name   = "exec_postrun",
2704                 .lname  = "Post-execute runnable",
2705                 .type   = FIO_OPT_STR_STORE,
2706                 .off1   = td_var_offset(exec_postrun),
2707                 .help   = "Execute this file after running job",
2708                 .category = FIO_OPT_C_GENERAL,
2709                 .group  = FIO_OPT_G_INVALID,
2710         },
2711 #ifdef FIO_HAVE_IOSCHED_SWITCH
2712         {
2713                 .name   = "ioscheduler",
2714                 .lname  = "I/O scheduler",
2715                 .type   = FIO_OPT_STR_STORE,
2716                 .off1   = td_var_offset(ioscheduler),
2717                 .help   = "Use this IO scheduler on the backing device",
2718                 .category = FIO_OPT_C_FILE,
2719                 .group  = FIO_OPT_G_INVALID,
2720         },
2721 #endif
2722         {
2723                 .name   = "zonesize",
2724                 .lname  = "Zone size",
2725                 .type   = FIO_OPT_STR_VAL,
2726                 .off1   = td_var_offset(zone_size),
2727                 .help   = "Amount of data to read per zone",
2728                 .def    = "0",
2729                 .interval = 1024 * 1024,
2730                 .category = FIO_OPT_C_IO,
2731                 .group  = FIO_OPT_G_ZONE,
2732         },
2733         {
2734                 .name   = "zonerange",
2735                 .lname  = "Zone range",
2736                 .type   = FIO_OPT_STR_VAL,
2737                 .off1   = td_var_offset(zone_range),
2738                 .help   = "Give size of an IO zone",
2739                 .def    = "0",
2740                 .interval = 1024 * 1024,
2741                 .category = FIO_OPT_C_IO,
2742                 .group  = FIO_OPT_G_ZONE,
2743         },
2744         {
2745                 .name   = "zoneskip",
2746                 .lname  = "Zone skip",
2747                 .type   = FIO_OPT_STR_VAL,
2748                 .off1   = td_var_offset(zone_skip),
2749                 .help   = "Space between IO zones",
2750                 .def    = "0",
2751                 .interval = 1024 * 1024,
2752                 .category = FIO_OPT_C_IO,
2753                 .group  = FIO_OPT_G_ZONE,
2754         },
2755         {
2756                 .name   = "lockmem",
2757                 .lname  = "Lock memory",
2758                 .type   = FIO_OPT_STR_VAL,
2759                 .off1   = td_var_offset(lockmem),
2760                 .help   = "Lock down this amount of memory (per worker)",
2761                 .def    = "0",
2762                 .interval = 1024 * 1024,
2763                 .category = FIO_OPT_C_GENERAL,
2764                 .group  = FIO_OPT_G_INVALID,
2765         },
2766         {
2767                 .name   = "rwmixread",
2768                 .lname  = "Read/write mix read",
2769                 .type   = FIO_OPT_INT,
2770                 .cb     = str_rwmix_read_cb,
2771                 .off1   = td_var_offset(rwmix[DDIR_READ]),
2772                 .maxval = 100,
2773                 .help   = "Percentage of mixed workload that is reads",
2774                 .def    = "50",
2775                 .interval = 5,
2776                 .inverse = "rwmixwrite",
2777                 .category = FIO_OPT_C_IO,
2778                 .group  = FIO_OPT_G_RWMIX,
2779         },
2780         {
2781                 .name   = "rwmixwrite",
2782                 .lname  = "Read/write mix write",
2783                 .type   = FIO_OPT_INT,
2784                 .cb     = str_rwmix_write_cb,
2785                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
2786                 .maxval = 100,
2787                 .help   = "Percentage of mixed workload that is writes",
2788                 .def    = "50",
2789                 .interval = 5,
2790                 .inverse = "rwmixread",
2791                 .category = FIO_OPT_C_IO,
2792                 .group  = FIO_OPT_G_RWMIX,
2793         },
2794         {
2795                 .name   = "rwmixcycle",
2796                 .lname  = "Read/write mix cycle",
2797                 .type   = FIO_OPT_DEPRECATED,
2798                 .category = FIO_OPT_C_IO,
2799                 .group  = FIO_OPT_G_RWMIX,
2800         },
2801         {
2802                 .name   = "nice",
2803                 .lname  = "Nice",
2804                 .type   = FIO_OPT_INT,
2805                 .off1   = td_var_offset(nice),
2806                 .help   = "Set job CPU nice value",
2807                 .minval = -19,
2808                 .maxval = 20,
2809                 .def    = "0",
2810                 .interval = 1,
2811                 .category = FIO_OPT_C_GENERAL,
2812                 .group  = FIO_OPT_G_CRED,
2813         },
2814 #ifdef FIO_HAVE_IOPRIO
2815         {
2816                 .name   = "prio",
2817                 .lname  = "I/O nice priority",
2818                 .type   = FIO_OPT_INT,
2819                 .off1   = td_var_offset(ioprio),
2820                 .help   = "Set job IO priority value",
2821                 .minval = 0,
2822                 .maxval = 7,
2823                 .interval = 1,
2824                 .category = FIO_OPT_C_GENERAL,
2825                 .group  = FIO_OPT_G_CRED,
2826         },
2827         {
2828                 .name   = "prioclass",
2829                 .lname  = "I/O nice priority class",
2830                 .type   = FIO_OPT_INT,
2831                 .off1   = td_var_offset(ioprio_class),
2832                 .help   = "Set job IO priority class",
2833                 .minval = 0,
2834                 .maxval = 3,
2835                 .interval = 1,
2836                 .category = FIO_OPT_C_GENERAL,
2837                 .group  = FIO_OPT_G_CRED,
2838         },
2839 #endif
2840         {
2841                 .name   = "thinktime",
2842                 .lname  = "Thinktime",
2843                 .type   = FIO_OPT_INT,
2844                 .off1   = td_var_offset(thinktime),
2845                 .help   = "Idle time between IO buffers (usec)",
2846                 .def    = "0",
2847                 .is_time = 1,
2848                 .category = FIO_OPT_C_IO,
2849                 .group  = FIO_OPT_G_THINKTIME,
2850         },
2851         {
2852                 .name   = "thinktime_spin",
2853                 .lname  = "Thinktime spin",
2854                 .type   = FIO_OPT_INT,
2855                 .off1   = td_var_offset(thinktime_spin),
2856                 .help   = "Start think time by spinning this amount (usec)",
2857                 .def    = "0",
2858                 .is_time = 1,
2859                 .parent = "thinktime",
2860                 .hide   = 1,
2861                 .category = FIO_OPT_C_IO,
2862                 .group  = FIO_OPT_G_THINKTIME,
2863         },
2864         {
2865                 .name   = "thinktime_blocks",
2866                 .lname  = "Thinktime blocks",
2867                 .type   = FIO_OPT_INT,
2868                 .off1   = td_var_offset(thinktime_blocks),
2869                 .help   = "IO buffer period between 'thinktime'",
2870                 .def    = "1",
2871                 .parent = "thinktime",
2872                 .hide   = 1,
2873                 .category = FIO_OPT_C_IO,
2874                 .group  = FIO_OPT_G_THINKTIME,
2875         },
2876         {
2877                 .name   = "rate",
2878                 .lname  = "I/O rate",
2879                 .type   = FIO_OPT_INT,
2880                 .off1   = td_var_offset(rate[DDIR_READ]),
2881                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2882                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2883                 .help   = "Set bandwidth rate",
2884                 .category = FIO_OPT_C_IO,
2885                 .group  = FIO_OPT_G_RATE,
2886         },
2887         {
2888                 .name   = "ratemin",
2889                 .lname  = "I/O min rate",
2890                 .type   = FIO_OPT_INT,
2891                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2892                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2893                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2894                 .help   = "Job must meet this rate or it will be shutdown",
2895                 .parent = "rate",
2896                 .hide   = 1,
2897                 .category = FIO_OPT_C_IO,
2898                 .group  = FIO_OPT_G_RATE,
2899         },
2900         {
2901                 .name   = "rate_iops",
2902                 .lname  = "I/O rate IOPS",
2903                 .type   = FIO_OPT_INT,
2904                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2905                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2906                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2907                 .help   = "Limit IO used to this number of IO operations/sec",
2908                 .hide   = 1,
2909                 .category = FIO_OPT_C_IO,
2910                 .group  = FIO_OPT_G_RATE,
2911         },
2912         {
2913                 .name   = "rate_iops_min",
2914                 .lname  = "I/O min rate IOPS",
2915                 .type   = FIO_OPT_INT,
2916                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2917                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2918                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2919                 .help   = "Job must meet this rate or it will be shut down",
2920                 .parent = "rate_iops",
2921                 .hide   = 1,
2922                 .category = FIO_OPT_C_IO,
2923                 .group  = FIO_OPT_G_RATE,
2924         },
2925         {
2926                 .name   = "ratecycle",
2927                 .lname  = "I/O rate cycle",
2928                 .type   = FIO_OPT_INT,
2929                 .off1   = td_var_offset(ratecycle),
2930                 .help   = "Window average for rate limits (msec)",
2931                 .def    = "1000",
2932                 .parent = "rate",
2933                 .hide   = 1,
2934                 .category = FIO_OPT_C_IO,
2935                 .group  = FIO_OPT_G_RATE,
2936         },
2937         {
2938                 .name   = "max_latency",
2939                 .type   = FIO_OPT_INT,
2940                 .off1   = td_var_offset(max_latency),
2941                 .help   = "Maximum tolerated IO latency (usec)",
2942                 .is_time = 1,
2943                 .category = FIO_OPT_C_IO,
2944                 .group = FIO_OPT_G_LATPROF,
2945         },
2946         {
2947                 .name   = "latency_target",
2948                 .lname  = "Latency Target (usec)",
2949                 .type   = FIO_OPT_STR_VAL_TIME,
2950                 .off1   = td_var_offset(latency_target),
2951                 .help   = "Ramp to max queue depth supporting this latency",
2952                 .is_time = 1,
2953                 .category = FIO_OPT_C_IO,
2954                 .group  = FIO_OPT_G_LATPROF,
2955         },
2956         {
2957                 .name   = "latency_window",
2958                 .lname  = "Latency Window (usec)",
2959                 .type   = FIO_OPT_STR_VAL_TIME,
2960                 .off1   = td_var_offset(latency_window),
2961                 .help   = "Time to sustain latency_target",
2962                 .is_time = 1,
2963                 .category = FIO_OPT_C_IO,
2964                 .group  = FIO_OPT_G_LATPROF,
2965         },
2966         {
2967                 .name   = "latency_percentile",
2968                 .lname  = "Latency Percentile",
2969                 .type   = FIO_OPT_FLOAT_LIST,
2970                 .off1   = td_var_offset(latency_percentile),
2971                 .help   = "Percentile of IOs must be below latency_target",
2972                 .def    = "100",
2973                 .maxlen = 1,
2974                 .minfp  = 0.0,
2975                 .maxfp  = 100.0,
2976                 .category = FIO_OPT_C_IO,
2977                 .group  = FIO_OPT_G_LATPROF,
2978         },
2979         {
2980                 .name   = "invalidate",
2981                 .lname  = "Cache invalidate",
2982                 .type   = FIO_OPT_BOOL,
2983                 .off1   = td_var_offset(invalidate_cache),
2984                 .help   = "Invalidate buffer/page cache prior to running job",
2985                 .def    = "1",
2986                 .category = FIO_OPT_C_IO,
2987                 .group  = FIO_OPT_G_IO_TYPE,
2988         },
2989         {
2990                 .name   = "sync",
2991                 .lname  = "Synchronous I/O",
2992                 .type   = FIO_OPT_BOOL,
2993                 .off1   = td_var_offset(sync_io),
2994                 .help   = "Use O_SYNC for buffered writes",
2995                 .def    = "0",
2996                 .parent = "buffered",
2997                 .hide   = 1,
2998                 .category = FIO_OPT_C_IO,
2999                 .group  = FIO_OPT_G_IO_TYPE,
3000         },
3001         {
3002                 .name   = "create_serialize",
3003                 .lname  = "Create serialize",
3004                 .type   = FIO_OPT_BOOL,
3005                 .off1   = td_var_offset(create_serialize),
3006                 .help   = "Serialize creating of job files",
3007                 .def    = "1",
3008                 .category = FIO_OPT_C_FILE,
3009                 .group  = FIO_OPT_G_INVALID,
3010         },
3011         {
3012                 .name   = "create_fsync",
3013                 .lname  = "Create fsync",
3014                 .type   = FIO_OPT_BOOL,
3015                 .off1   = td_var_offset(create_fsync),
3016                 .help   = "fsync file after creation",
3017                 .def    = "1",
3018                 .category = FIO_OPT_C_FILE,
3019                 .group  = FIO_OPT_G_INVALID,
3020         },
3021         {
3022                 .name   = "create_on_open",
3023                 .lname  = "Create on open",
3024                 .type   = FIO_OPT_BOOL,
3025                 .off1   = td_var_offset(create_on_open),
3026                 .help   = "Create files when they are opened for IO",
3027                 .def    = "0",
3028                 .category = FIO_OPT_C_FILE,
3029                 .group  = FIO_OPT_G_INVALID,
3030         },
3031         {
3032                 .name   = "create_only",
3033                 .type   = FIO_OPT_BOOL,
3034                 .off1   = td_var_offset(create_only),
3035                 .help   = "Only perform file creation phase",
3036                 .category = FIO_OPT_C_FILE,
3037                 .def    = "0",
3038         },
3039         {
3040                 .name   = "pre_read",
3041                 .lname  = "Pre-read files",
3042                 .type   = FIO_OPT_BOOL,
3043                 .off1   = td_var_offset(pre_read),
3044                 .help   = "Pre-read files before starting official testing",
3045                 .def    = "0",
3046                 .category = FIO_OPT_C_FILE,
3047                 .group  = FIO_OPT_G_INVALID,
3048         },
3049 #ifdef FIO_HAVE_CPU_AFFINITY
3050         {
3051                 .name   = "cpumask",
3052                 .lname  = "CPU mask",
3053                 .type   = FIO_OPT_INT,
3054                 .cb     = str_cpumask_cb,
3055                 .off1   = td_var_offset(cpumask),
3056                 .help   = "CPU affinity mask",
3057                 .category = FIO_OPT_C_GENERAL,
3058                 .group  = FIO_OPT_G_CRED,
3059         },
3060         {
3061                 .name   = "cpus_allowed",
3062                 .lname  = "CPUs allowed",
3063                 .type   = FIO_OPT_STR,
3064                 .cb     = str_cpus_allowed_cb,
3065                 .off1   = td_var_offset(cpumask),
3066                 .help   = "Set CPUs allowed",
3067                 .category = FIO_OPT_C_GENERAL,
3068                 .group  = FIO_OPT_G_CRED,
3069         },
3070         {
3071                 .name   = "cpus_allowed_policy",
3072                 .lname  = "CPUs allowed distribution policy",
3073                 .type   = FIO_OPT_STR,
3074                 .off1   = td_var_offset(cpus_allowed_policy),
3075                 .help   = "Distribution policy for cpus_allowed",
3076                 .parent = "cpus_allowed",
3077                 .prio   = 1,
3078                 .posval = {
3079                           { .ival = "shared",
3080                             .oval = FIO_CPUS_SHARED,
3081                             .help = "Mask shared between threads",
3082                           },
3083                           { .ival = "split",
3084                             .oval = FIO_CPUS_SPLIT,
3085                             .help = "Mask split between threads",
3086                           },
3087                 },
3088                 .category = FIO_OPT_C_GENERAL,
3089                 .group  = FIO_OPT_G_CRED,
3090         },
3091 #endif
3092 #ifdef CONFIG_LIBNUMA
3093         {
3094                 .name   = "numa_cpu_nodes",
3095                 .type   = FIO_OPT_STR,
3096                 .cb     = str_numa_cpunodes_cb,
3097                 .off1   = td_var_offset(numa_cpunodes),
3098                 .help   = "NUMA CPU nodes bind",
3099                 .category = FIO_OPT_C_GENERAL,
3100                 .group  = FIO_OPT_G_INVALID,
3101         },
3102         {
3103                 .name   = "numa_mem_policy",
3104                 .type   = FIO_OPT_STR,
3105                 .cb     = str_numa_mpol_cb,
3106                 .off1   = td_var_offset(numa_memnodes),
3107                 .help   = "NUMA memory policy setup",
3108                 .category = FIO_OPT_C_GENERAL,
3109                 .group  = FIO_OPT_G_INVALID,
3110         },
3111 #endif
3112         {
3113                 .name   = "end_fsync",
3114                 .lname  = "End fsync",
3115                 .type   = FIO_OPT_BOOL,
3116                 .off1   = td_var_offset(end_fsync),
3117                 .help   = "Include fsync at the end of job",
3118                 .def    = "0",
3119                 .category = FIO_OPT_C_FILE,
3120                 .group  = FIO_OPT_G_INVALID,
3121         },
3122         {
3123                 .name   = "fsync_on_close",
3124                 .lname  = "Fsync on close",
3125                 .type   = FIO_OPT_BOOL,
3126                 .off1   = td_var_offset(fsync_on_close),
3127                 .help   = "fsync files on close",
3128                 .def    = "0",
3129                 .category = FIO_OPT_C_FILE,
3130                 .group  = FIO_OPT_G_INVALID,
3131         },
3132         {
3133                 .name   = "unlink",
3134                 .lname  = "Unlink file",
3135                 .type   = FIO_OPT_BOOL,
3136                 .off1   = td_var_offset(unlink),
3137                 .help   = "Unlink created files after job has completed",
3138                 .def    = "0",
3139                 .category = FIO_OPT_C_FILE,
3140                 .group  = FIO_OPT_G_INVALID,
3141         },
3142         {
3143                 .name   = "exitall",
3144                 .lname  = "Exit-all on terminate",
3145                 .type   = FIO_OPT_STR_SET,
3146                 .cb     = str_exitall_cb,
3147                 .help   = "Terminate all jobs when one exits",
3148                 .category = FIO_OPT_C_GENERAL,
3149                 .group  = FIO_OPT_G_PROCESS,
3150         },
3151         {
3152                 .name   = "stonewall",
3153                 .lname  = "Wait for previous",
3154                 .alias  = "wait_for_previous",
3155                 .type   = FIO_OPT_STR_SET,
3156                 .off1   = td_var_offset(stonewall),
3157                 .help   = "Insert a hard barrier between this job and previous",
3158                 .category = FIO_OPT_C_GENERAL,
3159                 .group  = FIO_OPT_G_PROCESS,
3160         },
3161         {
3162                 .name   = "new_group",
3163                 .lname  = "New group",
3164                 .type   = FIO_OPT_STR_SET,
3165                 .off1   = td_var_offset(new_group),
3166                 .help   = "Mark the start of a new group (for reporting)",
3167                 .category = FIO_OPT_C_GENERAL,
3168                 .group  = FIO_OPT_G_PROCESS,
3169         },
3170         {
3171                 .name   = "thread",
3172                 .lname  = "Thread",
3173                 .type   = FIO_OPT_STR_SET,
3174                 .off1   = td_var_offset(use_thread),
3175                 .help   = "Use threads instead of processes",
3176 #ifdef CONFIG_NO_SHM
3177                 .def    = "1",
3178                 .no_warn_def = 1,
3179 #endif
3180                 .category = FIO_OPT_C_GENERAL,
3181                 .group  = FIO_OPT_G_PROCESS,
3182         },
3183         {
3184                 .name   = "write_bw_log",
3185                 .lname  = "Write bandwidth log",
3186                 .type   = FIO_OPT_STR_STORE,
3187                 .off1   = td_var_offset(bw_log_file),
3188                 .help   = "Write log of bandwidth during run",
3189                 .category = FIO_OPT_C_LOG,
3190                 .group  = FIO_OPT_G_INVALID,
3191         },
3192         {
3193                 .name   = "write_lat_log",
3194                 .lname  = "Write latency log",
3195                 .type   = FIO_OPT_STR_STORE,
3196                 .off1   = td_var_offset(lat_log_file),
3197                 .help   = "Write log of latency during run",
3198                 .category = FIO_OPT_C_LOG,
3199                 .group  = FIO_OPT_G_INVALID,
3200         },
3201         {
3202                 .name   = "write_iops_log",
3203                 .lname  = "Write IOPS log",
3204                 .type   = FIO_OPT_STR_STORE,
3205                 .off1   = td_var_offset(iops_log_file),
3206                 .help   = "Write log of IOPS during run",
3207                 .category = FIO_OPT_C_LOG,
3208                 .group  = FIO_OPT_G_INVALID,
3209         },
3210         {
3211                 .name   = "log_avg_msec",
3212                 .lname  = "Log averaging (msec)",
3213                 .type   = FIO_OPT_INT,
3214                 .off1   = td_var_offset(log_avg_msec),
3215                 .help   = "Average bw/iops/lat logs over this period of time",
3216                 .def    = "0",
3217                 .category = FIO_OPT_C_LOG,
3218                 .group  = FIO_OPT_G_INVALID,
3219         },
3220         {
3221                 .name   = "log_offset",
3222                 .lname  = "Log offset of IO",
3223                 .type   = FIO_OPT_BOOL,
3224                 .off1   = td_var_offset(log_offset),
3225                 .help   = "Include offset of IO for each log entry",
3226                 .def    = "0",
3227                 .category = FIO_OPT_C_LOG,
3228                 .group  = FIO_OPT_G_INVALID,
3229         },
3230 #ifdef CONFIG_ZLIB
3231         {
3232                 .name   = "log_compression",
3233                 .lname  = "Log compression",
3234                 .type   = FIO_OPT_INT,
3235                 .off1   = td_var_offset(log_gz),
3236                 .help   = "Log in compressed chunks of this size",
3237                 .minval = 32 * 1024 * 1024ULL,
3238                 .maxval = 512 * 1024 * 1024ULL,
3239                 .category = FIO_OPT_C_LOG,
3240                 .group  = FIO_OPT_G_INVALID,
3241         },
3242         {
3243                 .name   = "log_store_compressed",
3244                 .lname  = "Log store compressed",
3245                 .type   = FIO_OPT_BOOL,
3246                 .off1   = td_var_offset(log_gz_store),
3247                 .help   = "Store logs in a compressed format",
3248                 .category = FIO_OPT_C_LOG,
3249                 .group  = FIO_OPT_G_INVALID,
3250         },
3251 #endif
3252         {
3253                 .name   = "block_error_percentiles",
3254                 .lname  = "Block error percentiles",
3255                 .type   = FIO_OPT_BOOL,
3256                 .off1   = td_var_offset(block_error_hist),
3257                 .help   = "Record trim block errors and make a histogram",
3258                 .def    = "0",
3259                 .category = FIO_OPT_C_LOG,
3260                 .group  = FIO_OPT_G_INVALID,
3261         },
3262         {
3263                 .name   = "bwavgtime",
3264                 .lname  = "Bandwidth average time",
3265                 .type   = FIO_OPT_INT,
3266                 .off1   = td_var_offset(bw_avg_time),
3267                 .help   = "Time window over which to calculate bandwidth"
3268                           " (msec)",
3269                 .def    = "500",
3270                 .parent = "write_bw_log",
3271                 .hide   = 1,
3272                 .interval = 100,
3273                 .category = FIO_OPT_C_LOG,
3274                 .group  = FIO_OPT_G_INVALID,
3275         },
3276         {
3277                 .name   = "iopsavgtime",
3278                 .lname  = "IOPS average time",
3279                 .type   = FIO_OPT_INT,
3280                 .off1   = td_var_offset(iops_avg_time),
3281                 .help   = "Time window over which to calculate IOPS (msec)",
3282                 .def    = "500",
3283                 .parent = "write_iops_log",
3284                 .hide   = 1,
3285                 .interval = 100,
3286                 .category = FIO_OPT_C_LOG,
3287                 .group  = FIO_OPT_G_INVALID,
3288         },
3289         {
3290                 .name   = "group_reporting",
3291                 .lname  = "Group reporting",
3292                 .type   = FIO_OPT_STR_SET,
3293                 .off1   = td_var_offset(group_reporting),
3294                 .help   = "Do reporting on a per-group basis",
3295                 .category = FIO_OPT_C_STAT,
3296                 .group  = FIO_OPT_G_INVALID,
3297         },
3298         {
3299                 .name   = "zero_buffers",
3300                 .lname  = "Zero I/O buffers",
3301                 .type   = FIO_OPT_STR_SET,
3302                 .off1   = td_var_offset(zero_buffers),
3303                 .help   = "Init IO buffers to all zeroes",
3304                 .category = FIO_OPT_C_IO,
3305                 .group  = FIO_OPT_G_IO_BUF,
3306         },
3307         {
3308                 .name   = "refill_buffers",
3309                 .lname  = "Refill I/O buffers",
3310                 .type   = FIO_OPT_STR_SET,
3311                 .off1   = td_var_offset(refill_buffers),
3312                 .help   = "Refill IO buffers on every IO submit",
3313                 .category = FIO_OPT_C_IO,
3314                 .group  = FIO_OPT_G_IO_BUF,
3315         },
3316         {
3317                 .name   = "scramble_buffers",
3318                 .lname  = "Scramble I/O buffers",
3319                 .type   = FIO_OPT_BOOL,
3320                 .off1   = td_var_offset(scramble_buffers),
3321                 .help   = "Slightly scramble buffers on every IO submit",
3322                 .def    = "1",
3323                 .category = FIO_OPT_C_IO,
3324                 .group  = FIO_OPT_G_IO_BUF,
3325         },
3326         {
3327                 .name   = "buffer_pattern",
3328                 .lname  = "Buffer pattern",
3329                 .type   = FIO_OPT_STR,
3330                 .cb     = str_buffer_pattern_cb,
3331                 .off1   = td_var_offset(buffer_pattern),
3332                 .help   = "Fill pattern for IO buffers",
3333                 .category = FIO_OPT_C_IO,
3334                 .group  = FIO_OPT_G_IO_BUF,
3335         },
3336         {
3337                 .name   = "buffer_compress_percentage",
3338                 .lname  = "Buffer compression percentage",
3339                 .type   = FIO_OPT_INT,
3340                 .cb     = str_buffer_compress_cb,
3341                 .off1   = td_var_offset(compress_percentage),
3342                 .maxval = 100,
3343                 .minval = 0,
3344                 .help   = "How compressible the buffer is (approximately)",
3345                 .interval = 5,
3346                 .category = FIO_OPT_C_IO,
3347                 .group  = FIO_OPT_G_IO_BUF,
3348         },
3349         {
3350                 .name   = "buffer_compress_chunk",
3351                 .lname  = "Buffer compression chunk size",
3352                 .type   = FIO_OPT_INT,
3353                 .off1   = td_var_offset(compress_chunk),
3354                 .parent = "buffer_compress_percentage",
3355                 .hide   = 1,
3356                 .help   = "Size of compressible region in buffer",
3357                 .interval = 256,
3358                 .category = FIO_OPT_C_IO,
3359                 .group  = FIO_OPT_G_IO_BUF,
3360         },
3361         {
3362                 .name   = "dedupe_percentage",
3363                 .lname  = "Dedupe percentage",
3364                 .type   = FIO_OPT_INT,
3365                 .cb     = str_dedupe_cb,
3366                 .off1   = td_var_offset(dedupe_percentage),
3367                 .maxval = 100,
3368                 .minval = 0,
3369                 .help   = "Percentage of buffers that are dedupable",
3370                 .interval = 1,
3371                 .category = FIO_OPT_C_IO,
3372                 .group  = FIO_OPT_G_IO_BUF,
3373         },
3374         {
3375                 .name   = "clat_percentiles",
3376                 .lname  = "Completion latency percentiles",
3377                 .type   = FIO_OPT_BOOL,
3378                 .off1   = td_var_offset(clat_percentiles),
3379                 .help   = "Enable the reporting of completion latency percentiles",
3380                 .def    = "1",
3381                 .category = FIO_OPT_C_STAT,
3382                 .group  = FIO_OPT_G_INVALID,
3383         },
3384         {
3385                 .name   = "percentile_list",
3386                 .lname  = "Percentile list",
3387                 .type   = FIO_OPT_FLOAT_LIST,
3388                 .off1   = td_var_offset(percentile_list),
3389                 .off2   = td_var_offset(percentile_precision),
3390                 .help   = "Specify a custom list of percentiles to report for "
3391                           "completion latency and block errors",
3392                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3393                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3394                 .minfp  = 0.0,
3395                 .maxfp  = 100.0,
3396                 .category = FIO_OPT_C_STAT,
3397                 .group  = FIO_OPT_G_INVALID,
3398         },
3399
3400 #ifdef FIO_HAVE_DISK_UTIL
3401         {
3402                 .name   = "disk_util",
3403                 .lname  = "Disk utilization",
3404                 .type   = FIO_OPT_BOOL,
3405                 .off1   = td_var_offset(do_disk_util),
3406                 .help   = "Log disk utilization statistics",
3407                 .def    = "1",
3408                 .category = FIO_OPT_C_STAT,
3409                 .group  = FIO_OPT_G_INVALID,
3410         },
3411 #endif
3412         {
3413                 .name   = "gtod_reduce",
3414                 .lname  = "Reduce gettimeofday() calls",
3415                 .type   = FIO_OPT_BOOL,
3416                 .help   = "Greatly reduce number of gettimeofday() calls",
3417                 .cb     = str_gtod_reduce_cb,
3418                 .def    = "0",
3419                 .hide_on_set = 1,
3420                 .category = FIO_OPT_C_STAT,
3421                 .group  = FIO_OPT_G_INVALID,
3422         },
3423         {
3424                 .name   = "disable_lat",
3425                 .lname  = "Disable all latency stats",
3426                 .type   = FIO_OPT_BOOL,
3427                 .off1   = td_var_offset(disable_lat),
3428                 .help   = "Disable latency numbers",
3429                 .parent = "gtod_reduce",
3430                 .hide   = 1,
3431                 .def    = "0",
3432                 .category = FIO_OPT_C_STAT,
3433                 .group  = FIO_OPT_G_INVALID,
3434         },
3435         {
3436                 .name   = "disable_clat",
3437                 .lname  = "Disable completion latency stats",
3438                 .type   = FIO_OPT_BOOL,
3439                 .off1   = td_var_offset(disable_clat),
3440                 .help   = "Disable completion latency numbers",
3441                 .parent = "gtod_reduce",
3442                 .hide   = 1,
3443                 .def    = "0",
3444                 .category = FIO_OPT_C_STAT,
3445                 .group  = FIO_OPT_G_INVALID,
3446         },
3447         {
3448                 .name   = "disable_slat",
3449                 .lname  = "Disable submission latency stats",
3450                 .type   = FIO_OPT_BOOL,
3451                 .off1   = td_var_offset(disable_slat),
3452                 .help   = "Disable submission latency numbers",
3453                 .parent = "gtod_reduce",
3454                 .hide   = 1,
3455                 .def    = "0",
3456                 .category = FIO_OPT_C_STAT,
3457                 .group  = FIO_OPT_G_INVALID,
3458         },
3459         {
3460                 .name   = "disable_bw_measurement",
3461                 .lname  = "Disable bandwidth stats",
3462                 .type   = FIO_OPT_BOOL,
3463                 .off1   = td_var_offset(disable_bw),
3464                 .help   = "Disable bandwidth logging",
3465                 .parent = "gtod_reduce",
3466                 .hide   = 1,
3467                 .def    = "0",
3468                 .category = FIO_OPT_C_STAT,
3469                 .group  = FIO_OPT_G_INVALID,
3470         },
3471         {
3472                 .name   = "gtod_cpu",
3473                 .lname  = "Dedicated gettimeofday() CPU",
3474                 .type   = FIO_OPT_INT,
3475                 .off1   = td_var_offset(gtod_cpu),
3476                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3477                 .verify = gtod_cpu_verify,
3478                 .category = FIO_OPT_C_GENERAL,
3479                 .group  = FIO_OPT_G_CLOCK,
3480         },
3481         {
3482                 .name   = "unified_rw_reporting",
3483                 .type   = FIO_OPT_BOOL,
3484                 .off1   = td_var_offset(unified_rw_rep),
3485                 .help   = "Unify reporting across data direction",
3486                 .def    = "0",
3487                 .category = FIO_OPT_C_GENERAL,
3488                 .group  = FIO_OPT_G_INVALID,
3489         },
3490         {
3491                 .name   = "continue_on_error",
3492                 .lname  = "Continue on error",
3493                 .type   = FIO_OPT_STR,
3494                 .off1   = td_var_offset(continue_on_error),
3495                 .help   = "Continue on non-fatal errors during IO",
3496                 .def    = "none",
3497                 .category = FIO_OPT_C_GENERAL,
3498                 .group  = FIO_OPT_G_ERR,
3499                 .posval = {
3500                           { .ival = "none",
3501                             .oval = ERROR_TYPE_NONE,
3502                             .help = "Exit when an error is encountered",
3503                           },
3504                           { .ival = "read",
3505                             .oval = ERROR_TYPE_READ,
3506                             .help = "Continue on read errors only",
3507                           },
3508                           { .ival = "write",
3509                             .oval = ERROR_TYPE_WRITE,
3510                             .help = "Continue on write errors only",
3511                           },
3512                           { .ival = "io",
3513                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3514                             .help = "Continue on any IO errors",
3515                           },
3516                           { .ival = "verify",
3517                             .oval = ERROR_TYPE_VERIFY,
3518                             .help = "Continue on verify errors only",
3519                           },
3520                           { .ival = "all",
3521                             .oval = ERROR_TYPE_ANY,
3522                             .help = "Continue on all io and verify errors",
3523                           },
3524                           { .ival = "0",
3525                             .oval = ERROR_TYPE_NONE,
3526                             .help = "Alias for 'none'",
3527                           },
3528                           { .ival = "1",
3529                             .oval = ERROR_TYPE_ANY,
3530                             .help = "Alias for 'all'",
3531                           },
3532                 },
3533         },
3534         {
3535                 .name   = "ignore_error",
3536                 .type   = FIO_OPT_STR,
3537                 .cb     = str_ignore_error_cb,
3538                 .off1   = td_var_offset(ignore_error_nr),
3539                 .help   = "Set a specific list of errors to ignore",
3540                 .parent = "rw",
3541                 .category = FIO_OPT_C_GENERAL,
3542                 .group  = FIO_OPT_G_ERR,
3543         },
3544         {
3545                 .name   = "error_dump",
3546                 .type   = FIO_OPT_BOOL,
3547                 .off1   = td_var_offset(error_dump),
3548                 .def    = "0",
3549                 .help   = "Dump info on each error",
3550                 .category = FIO_OPT_C_GENERAL,
3551                 .group  = FIO_OPT_G_ERR,
3552         },
3553         {
3554                 .name   = "profile",
3555                 .lname  = "Profile",
3556                 .type   = FIO_OPT_STR_STORE,
3557                 .off1   = td_var_offset(profile),
3558                 .help   = "Select a specific builtin performance test",
3559                 .category = FIO_OPT_C_PROFILE,
3560                 .group  = FIO_OPT_G_INVALID,
3561         },
3562         {
3563                 .name   = "cgroup",
3564                 .lname  = "Cgroup",
3565                 .type   = FIO_OPT_STR_STORE,
3566                 .off1   = td_var_offset(cgroup),
3567                 .help   = "Add job to cgroup of this name",
3568                 .category = FIO_OPT_C_GENERAL,
3569                 .group  = FIO_OPT_G_CGROUP,
3570         },
3571         {
3572                 .name   = "cgroup_nodelete",
3573                 .lname  = "Cgroup no-delete",
3574                 .type   = FIO_OPT_BOOL,
3575                 .off1   = td_var_offset(cgroup_nodelete),
3576                 .help   = "Do not delete cgroups after job completion",
3577                 .def    = "0",
3578                 .parent = "cgroup",
3579                 .category = FIO_OPT_C_GENERAL,
3580                 .group  = FIO_OPT_G_CGROUP,
3581         },
3582         {
3583                 .name   = "cgroup_weight",
3584                 .lname  = "Cgroup weight",
3585                 .type   = FIO_OPT_INT,
3586                 .off1   = td_var_offset(cgroup_weight),
3587                 .help   = "Use given weight for cgroup",
3588                 .minval = 100,
3589                 .maxval = 1000,
3590                 .parent = "cgroup",
3591                 .category = FIO_OPT_C_GENERAL,
3592                 .group  = FIO_OPT_G_CGROUP,
3593         },
3594         {
3595                 .name   = "uid",
3596                 .lname  = "User ID",
3597                 .type   = FIO_OPT_INT,
3598                 .off1   = td_var_offset(uid),
3599                 .help   = "Run job with this user ID",
3600                 .category = FIO_OPT_C_GENERAL,
3601                 .group  = FIO_OPT_G_CRED,
3602         },
3603         {
3604                 .name   = "gid",
3605                 .lname  = "Group ID",
3606                 .type   = FIO_OPT_INT,
3607                 .off1   = td_var_offset(gid),
3608                 .help   = "Run job with this group ID",
3609                 .category = FIO_OPT_C_GENERAL,
3610                 .group  = FIO_OPT_G_CRED,
3611         },
3612         {
3613                 .name   = "kb_base",
3614                 .lname  = "KB Base",
3615                 .type   = FIO_OPT_INT,
3616                 .off1   = td_var_offset(kb_base),
3617                 .prio   = 1,
3618                 .def    = "1024",
3619                 .posval = {
3620                           { .ival = "1024",
3621                             .oval = 1024,
3622                             .help = "Use 1024 as the K base",
3623                           },
3624                           { .ival = "1000",
3625                             .oval = 1000,
3626                             .help = "Use 1000 as the K base",
3627                           },
3628                 },
3629                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3630                 .category = FIO_OPT_C_GENERAL,
3631                 .group  = FIO_OPT_G_INVALID,
3632         },
3633         {
3634                 .name   = "unit_base",
3635                 .lname  = "Base unit for reporting (Bits or Bytes)",
3636                 .type   = FIO_OPT_INT,
3637                 .off1   = td_var_offset(unit_base),
3638                 .prio   = 1,
3639                 .posval = {
3640                           { .ival = "0",
3641                             .oval = 0,
3642                             .help = "Auto-detect",
3643                           },
3644                           { .ival = "8",
3645                             .oval = 8,
3646                             .help = "Normal (byte based)",
3647                           },
3648                           { .ival = "1",
3649                             .oval = 1,
3650                             .help = "Bit based",
3651                           },
3652                 },
3653                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3654                 .category = FIO_OPT_C_GENERAL,
3655                 .group  = FIO_OPT_G_INVALID,
3656         },
3657         {
3658                 .name   = "hugepage-size",
3659                 .lname  = "Hugepage size",
3660                 .type   = FIO_OPT_INT,
3661                 .off1   = td_var_offset(hugepage_size),
3662                 .help   = "When using hugepages, specify size of each page",
3663                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3664                 .interval = 1024 * 1024,
3665                 .category = FIO_OPT_C_GENERAL,
3666                 .group  = FIO_OPT_G_INVALID,
3667         },
3668         {
3669                 .name   = "flow_id",
3670                 .lname  = "I/O flow ID",
3671                 .type   = FIO_OPT_INT,
3672                 .off1   = td_var_offset(flow_id),
3673                 .help   = "The flow index ID to use",
3674                 .def    = "0",
3675                 .category = FIO_OPT_C_IO,
3676                 .group  = FIO_OPT_G_IO_FLOW,
3677         },
3678         {
3679                 .name   = "flow",
3680                 .lname  = "I/O flow weight",
3681                 .type   = FIO_OPT_INT,
3682                 .off1   = td_var_offset(flow),
3683                 .help   = "Weight for flow control of this job",
3684                 .parent = "flow_id",
3685                 .hide   = 1,
3686                 .def    = "0",
3687                 .category = FIO_OPT_C_IO,
3688                 .group  = FIO_OPT_G_IO_FLOW,
3689         },
3690         {
3691                 .name   = "flow_watermark",
3692                 .lname  = "I/O flow watermark",
3693                 .type   = FIO_OPT_INT,
3694                 .off1   = td_var_offset(flow_watermark),
3695                 .help   = "High watermark for flow control. This option"
3696                         " should be set to the same value for all threads"
3697                         " with non-zero flow.",
3698                 .parent = "flow_id",
3699                 .hide   = 1,
3700                 .def    = "1024",
3701                 .category = FIO_OPT_C_IO,
3702                 .group  = FIO_OPT_G_IO_FLOW,
3703         },
3704         {
3705                 .name   = "flow_sleep",
3706                 .lname  = "I/O flow sleep",
3707                 .type   = FIO_OPT_INT,
3708                 .off1   = td_var_offset(flow_sleep),
3709                 .help   = "How many microseconds to sleep after being held"
3710                         " back by the flow control mechanism",
3711                 .parent = "flow_id",
3712                 .hide   = 1,
3713                 .def    = "0",
3714                 .category = FIO_OPT_C_IO,
3715                 .group  = FIO_OPT_G_IO_FLOW,
3716         },
3717         {
3718                 .name   = "skip_bad",
3719                 .lname  = "Skip operations against bad blocks",
3720                 .type   = FIO_OPT_BOOL,
3721                 .off1   = td_var_offset(skip_bad),
3722                 .help   = "Skip operations against known bad blocks.",
3723                 .hide   = 1,
3724                 .def    = "0",
3725                 .category = FIO_OPT_C_IO,
3726                 .group  = FIO_OPT_G_MTD,
3727         },
3728         {
3729                 .name = NULL,
3730         },
3731 };
3732
3733 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3734                         const char *name, int val)
3735 {
3736         lopt->name = (char *) name;
3737         lopt->val = val;
3738         if (o->type == FIO_OPT_STR_SET)
3739                 lopt->has_arg = optional_argument;
3740         else
3741                 lopt->has_arg = required_argument;
3742 }
3743
3744 static void options_to_lopts(struct fio_option *opts,
3745                               struct option *long_options,
3746                               int i, int option_type)
3747 {
3748         struct fio_option *o = &opts[0];
3749         while (o->name) {
3750                 add_to_lopt(&long_options[i], o, o->name, option_type);
3751                 if (o->alias) {
3752                         i++;
3753                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3754                 }
3755
3756                 i++;
3757                 o++;
3758                 assert(i < FIO_NR_OPTIONS);
3759         }
3760 }
3761
3762 void fio_options_set_ioengine_opts(struct option *long_options,
3763                                    struct thread_data *td)
3764 {
3765         unsigned int i;
3766
3767         i = 0;
3768         while (long_options[i].name) {
3769                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3770                         memset(&long_options[i], 0, sizeof(*long_options));
3771                         break;
3772                 }
3773                 i++;
3774         }
3775
3776         /*
3777          * Just clear out the prior ioengine options.
3778          */
3779         if (!td || !td->eo)
3780                 return;
3781
3782         options_to_lopts(td->io_ops->options, long_options, i,
3783                          FIO_GETOPT_IOENGINE);
3784 }
3785
3786 void fio_options_dup_and_init(struct option *long_options)
3787 {
3788         unsigned int i;
3789
3790         options_init(fio_options);
3791
3792         i = 0;
3793         while (long_options[i].name)
3794                 i++;
3795
3796         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3797 }
3798
3799 struct fio_keyword {
3800         const char *word;
3801         const char *desc;
3802         char *replace;
3803 };
3804
3805 static struct fio_keyword fio_keywords[] = {
3806         {
3807                 .word   = "$pagesize",
3808                 .desc   = "Page size in the system",
3809         },
3810         {
3811                 .word   = "$mb_memory",
3812                 .desc   = "Megabytes of memory online",
3813         },
3814         {
3815                 .word   = "$ncpus",
3816                 .desc   = "Number of CPUs online in the system",
3817         },
3818         {
3819                 .word   = NULL,
3820         },
3821 };
3822
3823 void fio_keywords_init(void)
3824 {
3825         unsigned long long mb_memory;
3826         char buf[128];
3827         long l;
3828
3829         sprintf(buf, "%lu", (unsigned long) page_size);
3830         fio_keywords[0].replace = strdup(buf);
3831
3832         mb_memory = os_phys_mem() / (1024 * 1024);
3833         sprintf(buf, "%llu", mb_memory);
3834         fio_keywords[1].replace = strdup(buf);
3835
3836         l = cpus_online();
3837         sprintf(buf, "%lu", l);
3838         fio_keywords[2].replace = strdup(buf);
3839 }
3840
3841 #define BC_APP          "bc"
3842
3843 static char *bc_calc(char *str)
3844 {
3845         char buf[128], *tmp;
3846         FILE *f;
3847         int ret;
3848
3849         /*
3850          * No math, just return string
3851          */
3852         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3853              !strchr(str, '/')) || strchr(str, '\''))
3854                 return str;
3855
3856         /*
3857          * Split option from value, we only need to calculate the value
3858          */
3859         tmp = strchr(str, '=');
3860         if (!tmp)
3861                 return str;
3862
3863         tmp++;
3864
3865         /*
3866          * Prevent buffer overflows; such a case isn't reasonable anyway
3867          */
3868         if (strlen(str) >= 128 || strlen(tmp) > 100)
3869                 return str;
3870
3871         sprintf(buf, "which %s > /dev/null", BC_APP);
3872         if (system(buf)) {
3873                 log_err("fio: bc is needed for performing math\n");
3874                 return NULL;
3875         }
3876
3877         sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
3878         f = popen(buf, "r");
3879         if (!f)
3880                 return NULL;
3881
3882         ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
3883         if (ret <= 0) {
3884                 pclose(f);
3885                 return NULL;
3886         }
3887
3888         pclose(f);
3889         buf[(tmp - str) + ret - 1] = '\0';
3890         memcpy(buf, str, tmp - str);
3891         free(str);
3892         return strdup(buf);
3893 }
3894
3895 /*
3896  * Return a copy of the input string with substrings of the form ${VARNAME}
3897  * substituted with the value of the environment variable VARNAME.  The
3898  * substitution always occurs, even if VARNAME is empty or the corresponding
3899  * environment variable undefined.