cd371417d76047efcf84fd9705e9fa7c97a830c7
[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 #include <netinet/in.h>
12
13 #include "fio.h"
14 #include "verify.h"
15 #include "parse.h"
16 #include "lib/fls.h"
17 #include "options.h"
18
19 #include "crc/crc32c.h"
20
21 char client_sockaddr_str[INET6_ADDRSTRLEN] = { 0 };
22
23 /*
24  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
25  */
26 static char *get_opt_postfix(const char *str)
27 {
28         char *p = strstr(str, ":");
29
30         if (!p)
31                 return NULL;
32
33         p++;
34         strip_blank_front(&p);
35         strip_blank_end(p);
36         return strdup(p);
37 }
38
39 static int converthexchartoint(char a)
40 {
41         int base;
42
43         switch (a) {
44         case '0'...'9':
45                 base = '0';
46                 break;
47         case 'A'...'F':
48                 base = 'A' - 10;
49                 break;
50         case 'a'...'f':
51                 base = 'a' - 10;
52                 break;
53         default:
54                 base = 0;
55         }
56         return a - base;
57 }
58
59 static int bs_cmp(const void *p1, const void *p2)
60 {
61         const struct bssplit *bsp1 = p1;
62         const struct bssplit *bsp2 = p2;
63
64         return bsp1->perc < bsp2->perc;
65 }
66
67 static int bssplit_ddir(struct thread_options *o, int ddir, char *str)
68 {
69         struct bssplit *bssplit;
70         unsigned int i, perc, perc_missing;
71         unsigned int max_bs, min_bs;
72         long long val;
73         char *fname;
74
75         o->bssplit_nr[ddir] = 4;
76         bssplit = malloc(4 * sizeof(struct bssplit));
77
78         i = 0;
79         max_bs = 0;
80         min_bs = -1;
81         while ((fname = strsep(&str, ":")) != NULL) {
82                 char *perc_str;
83
84                 if (!strlen(fname))
85                         break;
86
87                 /*
88                  * grow struct buffer, if needed
89                  */
90                 if (i == o->bssplit_nr[ddir]) {
91                         o->bssplit_nr[ddir] <<= 1;
92                         bssplit = realloc(bssplit, o->bssplit_nr[ddir]
93                                                   * sizeof(struct bssplit));
94                 }
95
96                 perc_str = strstr(fname, "/");
97                 if (perc_str) {
98                         *perc_str = '\0';
99                         perc_str++;
100                         perc = atoi(perc_str);
101                         if (perc > 100)
102                                 perc = 100;
103                         else if (!perc)
104                                 perc = -1U;
105                 } else
106                         perc = -1U;
107
108                 if (str_to_decimal(fname, &val, 1, o, 0, 0)) {
109                         log_err("fio: bssplit conversion failed\n");
110                         free(bssplit);
111                         return 1;
112                 }
113
114                 if (val > max_bs)
115                         max_bs = val;
116                 if (val < min_bs)
117                         min_bs = val;
118
119                 bssplit[i].bs = val;
120                 bssplit[i].perc = perc;
121                 i++;
122         }
123
124         o->bssplit_nr[ddir] = i;
125
126         /*
127          * Now check if the percentages add up, and how much is missing
128          */
129         perc = perc_missing = 0;
130         for (i = 0; i < o->bssplit_nr[ddir]; i++) {
131                 struct bssplit *bsp = &bssplit[i];
132
133                 if (bsp->perc == -1U)
134                         perc_missing++;
135                 else
136                         perc += bsp->perc;
137         }
138
139         if (perc > 100 && perc_missing > 1) {
140                 log_err("fio: bssplit percentages add to more than 100%%\n");
141                 free(bssplit);
142                 return 1;
143         }
144
145         /*
146          * If values didn't have a percentage set, divide the remains between
147          * them.
148          */
149         if (perc_missing) {
150                 if (perc_missing == 1 && o->bssplit_nr[ddir] == 1)
151                         perc = 100;
152                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
153                         struct bssplit *bsp = &bssplit[i];
154
155                         if (bsp->perc == -1U)
156                                 bsp->perc = (100 - perc) / perc_missing;
157                 }
158         }
159
160         o->min_bs[ddir] = min_bs;
161         o->max_bs[ddir] = max_bs;
162
163         /*
164          * now sort based on percentages, for ease of lookup
165          */
166         qsort(bssplit, o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
167         o->bssplit[ddir] = bssplit;
168         return 0;
169 }
170
171 static int str_bssplit_cb(void *data, const char *input)
172 {
173         struct thread_data *td = data;
174         char *str, *p, *odir, *ddir;
175         int ret = 0;
176
177         if (parse_dryrun())
178                 return 0;
179
180         p = str = strdup(input);
181
182         strip_blank_front(&str);
183         strip_blank_end(str);
184
185         odir = strchr(str, ',');
186         if (odir) {
187                 ddir = strchr(odir + 1, ',');
188                 if (ddir) {
189                         ret = bssplit_ddir(&td->o, DDIR_TRIM, ddir + 1);
190                         if (!ret)
191                                 *ddir = '\0';
192                 } else {
193                         char *op;
194
195                         op = strdup(odir + 1);
196                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
197
198                         free(op);
199                 }
200                 if (!ret)
201                         ret = bssplit_ddir(&td->o, DDIR_WRITE, odir + 1);
202                 if (!ret) {
203                         *odir = '\0';
204                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
205                 }
206         } else {
207                 char *op;
208
209                 op = strdup(str);
210                 ret = bssplit_ddir(&td->o, DDIR_WRITE, op);
211                 free(op);
212
213                 if (!ret) {
214                         op = strdup(str);
215                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
216                         free(op);
217                 }
218                 ret = bssplit_ddir(&td->o, DDIR_READ, str);
219         }
220
221         free(p);
222         return ret;
223 }
224
225 static int str2error(char *str)
226 {
227         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
228                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
229                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
230                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
231                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
232                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
233                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
234                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
235         int i = 0, num = sizeof(err) / sizeof(void *);
236
237         while (i < num) {
238                 if (!strcmp(err[i], str))
239                         return i + 1;
240                 i++;
241         }
242         return 0;
243 }
244
245 static int ignore_error_type(struct thread_data *td, int etype, char *str)
246 {
247         unsigned int i;
248         int *error;
249         char *fname;
250
251         if (etype >= ERROR_TYPE_CNT) {
252                 log_err("Illegal error type\n");
253                 return 1;
254         }
255
256         td->o.ignore_error_nr[etype] = 4;
257         error = malloc(4 * sizeof(struct bssplit));
258
259         i = 0;
260         while ((fname = strsep(&str, ":")) != NULL) {
261
262                 if (!strlen(fname))
263                         break;
264
265                 /*
266                  * grow struct buffer, if needed
267                  */
268                 if (i == td->o.ignore_error_nr[etype]) {
269                         td->o.ignore_error_nr[etype] <<= 1;
270                         error = realloc(error, td->o.ignore_error_nr[etype]
271                                                   * sizeof(int));
272                 }
273                 if (fname[0] == 'E') {
274                         error[i] = str2error(fname);
275                 } else {
276                         error[i] = atoi(fname);
277                         if (error[i] < 0)
278                                 error[i] = -error[i];
279                 }
280                 if (!error[i]) {
281                         log_err("Unknown error %s, please use number value \n",
282                                   fname);
283                         free(error);
284                         return 1;
285                 }
286                 i++;
287         }
288         if (i) {
289                 td->o.continue_on_error |= 1 << etype;
290                 td->o.ignore_error_nr[etype] = i;
291                 td->o.ignore_error[etype] = error;
292         } else
293                 free(error);
294
295         return 0;
296
297 }
298
299 static int str_ignore_error_cb(void *data, const char *input)
300 {
301         struct thread_data *td = data;
302         char *str, *p, *n;
303         int type = 0, ret = 1;
304
305         if (parse_dryrun())
306                 return 0;
307
308         p = str = strdup(input);
309
310         strip_blank_front(&str);
311         strip_blank_end(str);
312
313         while (p) {
314                 n = strchr(p, ',');
315                 if (n)
316                         *n++ = '\0';
317                 ret = ignore_error_type(td, type, p);
318                 if (ret)
319                         break;
320                 p = n;
321                 type++;
322         }
323         free(str);
324         return ret;
325 }
326
327 static int str_rw_cb(void *data, const char *str)
328 {
329         struct thread_data *td = data;
330         struct thread_options *o = &td->o;
331         char *nr;
332
333         if (parse_dryrun())
334                 return 0;
335
336         o->ddir_seq_nr = 1;
337         o->ddir_seq_add = 0;
338
339         nr = get_opt_postfix(str);
340         if (!nr)
341                 return 0;
342
343         if (td_random(td))
344                 o->ddir_seq_nr = atoi(nr);
345         else {
346                 long long val;
347
348                 if (str_to_decimal(nr, &val, 1, o, 0, 0)) {
349                         log_err("fio: rw postfix parsing failed\n");
350                         free(nr);
351                         return 1;
352                 }
353
354                 o->ddir_seq_add = val;
355         }
356
357         free(nr);
358         return 0;
359 }
360
361 static int str_mem_cb(void *data, const char *mem)
362 {
363         struct thread_data *td = data;
364
365         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP)
366                 td->o.mmapfile = get_opt_postfix(mem);
367
368         return 0;
369 }
370
371 static int fio_clock_source_cb(void *data, const char *str)
372 {
373         struct thread_data *td = data;
374
375         fio_clock_source = td->o.clocksource;
376         fio_clock_source_set = 1;
377         fio_clock_init();
378         return 0;
379 }
380
381 static int str_rwmix_read_cb(void *data, unsigned long long *val)
382 {
383         struct thread_data *td = data;
384
385         td->o.rwmix[DDIR_READ] = *val;
386         td->o.rwmix[DDIR_WRITE] = 100 - *val;
387         return 0;
388 }
389
390 static int str_rwmix_write_cb(void *data, unsigned long long *val)
391 {
392         struct thread_data *td = data;
393
394         td->o.rwmix[DDIR_WRITE] = *val;
395         td->o.rwmix[DDIR_READ] = 100 - *val;
396         return 0;
397 }
398
399 static int str_exitall_cb(void)
400 {
401         exitall_on_terminate = 1;
402         return 0;
403 }
404
405 #ifdef FIO_HAVE_CPU_AFFINITY
406 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
407 {
408         unsigned int i, index, cpus_in_mask;
409         const long max_cpu = cpus_online();
410
411         cpus_in_mask = fio_cpu_count(mask);
412         cpu_index = cpu_index % cpus_in_mask;
413
414         index = 0;
415         for (i = 0; i < max_cpu; i++) {
416                 if (!fio_cpu_isset(mask, i))
417                         continue;
418
419                 if (cpu_index != index)
420                         fio_cpu_clear(mask, i);
421
422                 index++;
423         }
424
425         return fio_cpu_count(mask);
426 }
427
428 static int str_cpumask_cb(void *data, unsigned long long *val)
429 {
430         struct thread_data *td = data;
431         unsigned int i;
432         long max_cpu;
433         int ret;
434
435         if (parse_dryrun())
436                 return 0;
437
438         ret = fio_cpuset_init(&td->o.cpumask);
439         if (ret < 0) {
440                 log_err("fio: cpuset_init failed\n");
441                 td_verror(td, ret, "fio_cpuset_init");
442                 return 1;
443         }
444
445         max_cpu = cpus_online();
446
447         for (i = 0; i < sizeof(int) * 8; i++) {
448                 if ((1 << i) & *val) {
449                         if (i >= max_cpu) {
450                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
451                                                                 max_cpu - 1);
452                                 return 1;
453                         }
454                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
455                         fio_cpu_set(&td->o.cpumask, i);
456                 }
457         }
458
459         return 0;
460 }
461
462 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
463                             const char *input)
464 {
465         char *cpu, *str, *p;
466         long max_cpu;
467         int ret = 0;
468
469         ret = fio_cpuset_init(mask);
470         if (ret < 0) {
471                 log_err("fio: cpuset_init failed\n");
472                 td_verror(td, ret, "fio_cpuset_init");
473                 return 1;
474         }
475
476         p = str = strdup(input);
477
478         strip_blank_front(&str);
479         strip_blank_end(str);
480
481         max_cpu = cpus_online();
482
483         while ((cpu = strsep(&str, ",")) != NULL) {
484                 char *str2, *cpu2;
485                 int icpu, icpu2;
486
487                 if (!strlen(cpu))
488                         break;
489
490                 str2 = cpu;
491                 icpu2 = -1;
492                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
493                         if (!strlen(cpu2))
494                                 break;
495
496                         icpu2 = atoi(cpu2);
497                 }
498
499                 icpu = atoi(cpu);
500                 if (icpu2 == -1)
501                         icpu2 = icpu;
502                 while (icpu <= icpu2) {
503                         if (icpu >= FIO_MAX_CPUS) {
504                                 log_err("fio: your OS only supports up to"
505                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
506                                 ret = 1;
507                                 break;
508                         }
509                         if (icpu >= max_cpu) {
510                                 log_err("fio: CPU %d too large (max=%ld)\n",
511                                                         icpu, max_cpu - 1);
512                                 ret = 1;
513                                 break;
514                         }
515
516                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
517                         fio_cpu_set(mask, icpu);
518                         icpu++;
519                 }
520                 if (ret)
521                         break;
522         }
523
524         free(p);
525         return ret;
526 }
527
528 static int str_cpus_allowed_cb(void *data, const char *input)
529 {
530         struct thread_data *td = data;
531
532         if (parse_dryrun())
533                 return 0;
534
535         return set_cpus_allowed(td, &td->o.cpumask, input);
536 }
537
538 static int str_verify_cpus_allowed_cb(void *data, const char *input)
539 {
540         struct thread_data *td = data;
541
542         return set_cpus_allowed(td, &td->o.verify_cpumask, input);
543 }
544 #endif
545
546 #ifdef CONFIG_LIBNUMA
547 static int str_numa_cpunodes_cb(void *data, char *input)
548 {
549         struct thread_data *td = data;
550         struct bitmask *verify_bitmask;
551
552         if (parse_dryrun())
553                 return 0;
554
555         /* numa_parse_nodestring() parses a character string list
556          * of nodes into a bit mask. The bit mask is allocated by
557          * numa_allocate_nodemask(), so it should be freed by
558          * numa_free_nodemask().
559          */
560         verify_bitmask = numa_parse_nodestring(input);
561         if (verify_bitmask == NULL) {
562                 log_err("fio: numa_parse_nodestring failed\n");
563                 td_verror(td, 1, "str_numa_cpunodes_cb");
564                 return 1;
565         }
566         numa_free_nodemask(verify_bitmask);
567
568         td->o.numa_cpunodes = strdup(input);
569         return 0;
570 }
571
572 static int str_numa_mpol_cb(void *data, char *input)
573 {
574         struct thread_data *td = data;
575         const char * const policy_types[] =
576                 { "default", "prefer", "bind", "interleave", "local", NULL };
577         int i;
578         char *nodelist;
579         struct bitmask *verify_bitmask;
580
581         if (parse_dryrun())
582                 return 0;
583
584         nodelist = strchr(input, ':');
585         if (nodelist) {
586                 /* NUL-terminate mode */
587                 *nodelist++ = '\0';
588         }
589
590         for (i = 0; i <= MPOL_LOCAL; i++) {
591                 if (!strcmp(input, policy_types[i])) {
592                         td->o.numa_mem_mode = i;
593                         break;
594                 }
595         }
596         if (i > MPOL_LOCAL) {
597                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
598                 goto out;
599         }
600
601         switch (td->o.numa_mem_mode) {
602         case MPOL_PREFERRED:
603                 /*
604                  * Insist on a nodelist of one node only
605                  */
606                 if (nodelist) {
607                         char *rest = nodelist;
608                         while (isdigit(*rest))
609                                 rest++;
610                         if (*rest) {
611                                 log_err("fio: one node only for \'prefer\'\n");
612                                 goto out;
613                         }
614                 } else {
615                         log_err("fio: one node is needed for \'prefer\'\n");
616                         goto out;
617                 }
618                 break;
619         case MPOL_INTERLEAVE:
620                 /*
621                  * Default to online nodes with memory if no nodelist
622                  */
623                 if (!nodelist)
624                         nodelist = strdup("all");
625                 break;
626         case MPOL_LOCAL:
627         case MPOL_DEFAULT:
628                 /*
629                  * Don't allow a nodelist
630                  */
631                 if (nodelist) {
632                         log_err("fio: NO nodelist for \'local\'\n");
633                         goto out;
634                 }
635                 break;
636         case MPOL_BIND:
637                 /*
638                  * Insist on a nodelist
639                  */
640                 if (!nodelist) {
641                         log_err("fio: a nodelist is needed for \'bind\'\n");
642                         goto out;
643                 }
644                 break;
645         }
646
647
648         /* numa_parse_nodestring() parses a character string list
649          * of nodes into a bit mask. The bit mask is allocated by
650          * numa_allocate_nodemask(), so it should be freed by
651          * numa_free_nodemask().
652          */
653         switch (td->o.numa_mem_mode) {
654         case MPOL_PREFERRED:
655                 td->o.numa_mem_prefer_node = atoi(nodelist);
656                 break;
657         case MPOL_INTERLEAVE:
658         case MPOL_BIND:
659                 verify_bitmask = numa_parse_nodestring(nodelist);
660                 if (verify_bitmask == NULL) {
661                         log_err("fio: numa_parse_nodestring failed\n");
662                         td_verror(td, 1, "str_numa_memnodes_cb");
663                         return 1;
664                 }
665                 td->o.numa_memnodes = strdup(nodelist);
666                 numa_free_nodemask(verify_bitmask);
667
668                 break;
669         case MPOL_LOCAL:
670         case MPOL_DEFAULT:
671         default:
672                 break;
673         }
674
675         return 0;
676 out:
677         return 1;
678 }
679 #endif
680
681 static int str_fst_cb(void *data, const char *str)
682 {
683         struct thread_data *td = data;
684         char *nr = get_opt_postfix(str);
685
686         td->file_service_nr = 1;
687         if (nr) {
688                 td->file_service_nr = atoi(nr);
689                 free(nr);
690         }
691
692         return 0;
693 }
694
695 #ifdef CONFIG_SYNC_FILE_RANGE
696 static int str_sfr_cb(void *data, const char *str)
697 {
698         struct thread_data *td = data;
699         char *nr = get_opt_postfix(str);
700
701         td->sync_file_range_nr = 1;
702         if (nr) {
703                 td->sync_file_range_nr = atoi(nr);
704                 free(nr);
705         }
706
707         return 0;
708 }
709 #endif
710
711 static int str_random_distribution_cb(void *data, const char *str)
712 {
713         struct thread_data *td = data;
714         double val;
715         char *nr;
716
717         if (parse_dryrun())
718                 return 0;
719
720         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
721                 val = FIO_DEF_ZIPF;
722         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
723                 val = FIO_DEF_PARETO;
724         else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS)
725                 val = 0.0;
726         else
727                 return 0;
728
729         nr = get_opt_postfix(str);
730         if (nr && !str_to_float(nr, &val, 0)) {
731                 log_err("fio: random postfix parsing failed\n");
732                 free(nr);
733                 return 1;
734         }
735
736         free(nr);
737
738         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
739                 if (val == 1.00) {
740                         log_err("fio: zipf theta must different than 1.0\n");
741                         return 1;
742                 }
743                 td->o.zipf_theta.u.f = val;
744         } else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) {
745                 if (val <= 0.00 || val >= 1.00) {
746                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
747                         return 1;
748                 }
749                 td->o.pareto_h.u.f = val;
750         } else {
751                 if (val <= 0.00 || val >= 100.0) {
752                         log_err("fio: normal deviation out of range (0 < input < 100.0)\n");
753                         return 1;
754                 }
755                 td->o.gauss_dev.u.f = val;
756         }
757
758         return 0;
759 }
760
761 /*
762  * Return next name in the string. Files are separated with ':'. If the ':'
763  * is escaped with a '\', then that ':' is part of the filename and does not
764  * indicate a new file.
765  */
766 static char *get_next_name(char **ptr)
767 {
768         char *str = *ptr;
769         char *p, *start;
770
771         if (!str || !strlen(str))
772                 return NULL;
773
774         start = str;
775         do {
776                 /*
777                  * No colon, we are done
778                  */
779                 p = strchr(str, ':');
780                 if (!p) {
781                         *ptr = NULL;
782                         break;
783                 }
784
785                 /*
786                  * We got a colon, but it's the first character. Skip and
787                  * continue
788                  */
789                 if (p == start) {
790                         str = ++start;
791                         continue;
792                 }
793
794                 if (*(p - 1) != '\\') {
795                         *p = '\0';
796                         *ptr = p + 1;
797                         break;
798                 }
799
800                 memmove(p - 1, p, strlen(p) + 1);
801                 str = p;
802         } while (1);
803
804         return start;
805 }
806
807
808 static int get_max_name_idx(char *input)
809 {
810         unsigned int cur_idx;
811         char *str, *p;
812
813         p = str = strdup(input);
814         for (cur_idx = 0; ; cur_idx++)
815                 if (get_next_name(&str) == NULL)
816                         break;
817
818         free(p);
819         return cur_idx;
820 }
821
822 /*
823  * Returns the directory at the index, indexes > entires will be
824  * assigned via modulo division of the index
825  */
826 int set_name_idx(char *target, size_t tlen, char *input, int index)
827 {
828         unsigned int cur_idx;
829         int len;
830         char *fname, *str, *p;
831
832         p = str = strdup(input);
833
834         index %= get_max_name_idx(input);
835         for (cur_idx = 0; cur_idx <= index; cur_idx++)
836                 fname = get_next_name(&str);
837
838         if (client_sockaddr_str[0]) {
839                 len = snprintf(target, tlen, "%s/%s.", fname,
840                                 client_sockaddr_str);
841         } else
842                 len = snprintf(target, tlen, "%s/", fname);
843
844         target[tlen - 1] = '\0';
845         free(p);
846
847         return len;
848 }
849
850 static int str_filename_cb(void *data, const char *input)
851 {
852         struct thread_data *td = data;
853         char *fname, *str, *p;
854
855         p = str = strdup(input);
856
857         strip_blank_front(&str);
858         strip_blank_end(str);
859
860         if (!td->files_index)
861                 td->o.nr_files = 0;
862
863         while ((fname = get_next_name(&str)) != NULL) {
864                 if (!strlen(fname))
865                         break;
866                 add_file(td, fname, 0, 1);
867         }
868
869         free(p);
870         return 0;
871 }
872
873 static int str_directory_cb(void *data, const char fio_unused *unused)
874 {
875         struct thread_data *td = data;
876         struct stat sb;
877         char *dirname, *str, *p;
878         int ret = 0;
879
880         if (parse_dryrun())
881                 return 0;
882
883         p = str = strdup(td->o.directory);
884         while ((dirname = get_next_name(&str)) != NULL) {
885                 if (lstat(dirname, &sb) < 0) {
886                         ret = errno;
887
888                         log_err("fio: %s is not a directory\n", dirname);
889                         td_verror(td, ret, "lstat");
890                         goto out;
891                 }
892                 if (!S_ISDIR(sb.st_mode)) {
893                         log_err("fio: %s is not a directory\n", dirname);
894                         ret = 1;
895                         goto out;
896                 }
897         }
898
899 out:
900         free(p);
901         return ret;
902 }
903
904 static int str_opendir_cb(void *data, const char fio_unused *str)
905 {
906         struct thread_data *td = data;
907
908         if (parse_dryrun())
909                 return 0;
910
911         if (!td->files_index)
912                 td->o.nr_files = 0;
913
914         return add_dir_files(td, td->o.opendir);
915 }
916
917 static int pattern_cb(char *pattern, unsigned int max_size,
918                       const char *input, unsigned int *pattern_bytes)
919 {
920         long off;
921         int i = 0, j = 0, len, k, base = 10;
922         uint32_t pattern_length;
923         char *loc1, *loc2;
924
925         /*
926          * Check if it's a string input
927          */
928         loc1 = strchr(input, '\"');
929         if (loc1) {
930                 do {
931                         loc1++;
932                         if (*loc1 == '\0' || *loc1 == '\"')
933                                 break;
934
935                         pattern[i] = *loc1;
936                         i++;
937                 } while (i < max_size);
938
939                 if (!i)
940                         return 1;
941
942                 goto fill;
943         }
944
945         /*
946          * No string, find out if it's decimal or hexidecimal
947          */
948         loc1 = strstr(input, "0x");
949         loc2 = strstr(input, "0X");
950         if (loc1 || loc2)
951                 base = 16;
952         off = strtol(input, NULL, base);
953         if (off != LONG_MAX || errno != ERANGE) {
954                 while (off) {
955                         pattern[i] = off & 0xff;
956                         off >>= 8;
957                         i++;
958                 }
959         } else {
960                 len = strlen(input);
961                 k = len - 1;
962                 if (base == 16) {
963                         if (loc1)
964                                 j = loc1 - input + 2;
965                         else
966                                 j = loc2 - input + 2;
967                 } else
968                         return 1;
969                 if (len - j < max_size * 2) {
970                         while (k >= j) {
971                                 off = converthexchartoint(input[k--]);
972                                 if (k >= j)
973                                         off += (converthexchartoint(input[k--])
974                                                 * 16);
975                                 pattern[i++] = (char) off;
976                         }
977                 }
978         }
979
980         /*
981          * Fill the pattern all the way to the end. This greatly reduces
982          * the number of memcpy's we have to do when verifying the IO.
983          */
984 fill:
985         pattern_length = i;
986         if (!i && !off)
987                 i = 1;
988         while (i > 1 && i * 2 <= max_size) {
989                 memcpy(&pattern[i], &pattern[0], i);
990                 i *= 2;
991         }
992
993         /*
994          * Fill remainder, if the pattern multiple ends up not being
995          * max_size.
996          */
997         while (i > 1 && i < max_size) {
998                 unsigned int b = min(pattern_length, max_size - i);
999
1000                 memcpy(&pattern[i], &pattern[0], b);
1001                 i += b;
1002         }
1003
1004         if (i == 1) {
1005                 /*
1006                  * The code in verify_io_u_pattern assumes a single byte
1007                  * pattern fills the whole verify pattern buffer.
1008                  */
1009                 memset(pattern, pattern[0], max_size);
1010         }
1011
1012         *pattern_bytes = i;
1013         return 0;
1014 }
1015
1016 static int str_buffer_pattern_cb(void *data, const char *input)
1017 {
1018         struct thread_data *td = data;
1019         int ret;
1020
1021         ret = pattern_cb(td->o.buffer_pattern, MAX_PATTERN_SIZE, input,
1022                                 &td->o.buffer_pattern_bytes);
1023
1024         if (!ret && td->o.buffer_pattern_bytes) {
1025                 if (!td->o.compress_percentage)
1026                         td->o.refill_buffers = 0;
1027                 td->o.scramble_buffers = 0;
1028                 td->o.zero_buffers = 0;
1029         } else {
1030                 log_err("fio: failed parsing pattern `%s`\n", input);
1031                 ret = 1;
1032         }
1033
1034         return ret;
1035 }
1036
1037 static int str_buffer_compress_cb(void *data, unsigned long long *il)
1038 {
1039         struct thread_data *td = data;
1040
1041         td->flags |= TD_F_COMPRESS;
1042         td->o.compress_percentage = *il;
1043         return 0;
1044 }
1045
1046 static int str_dedupe_cb(void *data, unsigned long long *il)
1047 {
1048         struct thread_data *td = data;
1049
1050         td->flags |= TD_F_COMPRESS;
1051         td->o.dedupe_percentage = *il;
1052         td->o.refill_buffers = 1;
1053         return 0;
1054 }
1055
1056 static int str_verify_pattern_cb(void *data, const char *input)
1057 {
1058         struct thread_data *td = data;
1059         int ret;
1060
1061         ret = pattern_cb(td->o.verify_pattern, MAX_PATTERN_SIZE, input,
1062                                 &td->o.verify_pattern_bytes);
1063
1064         /*
1065          * VERIFY_META could already be set
1066          */
1067         if (!ret && td->o.verify == VERIFY_NONE)
1068                 td->o.verify = VERIFY_PATTERN;
1069
1070         return ret;
1071 }
1072
1073 static int str_gtod_reduce_cb(void *data, int *il)
1074 {
1075         struct thread_data *td = data;
1076         int val = *il;
1077
1078         td->o.disable_lat = !!val;
1079         td->o.disable_clat = !!val;
1080         td->o.disable_slat = !!val;
1081         td->o.disable_bw = !!val;
1082         td->o.clat_percentiles = !val;
1083         if (val)
1084                 td->tv_cache_mask = 63;
1085
1086         return 0;
1087 }
1088
1089 static int str_size_cb(void *data, unsigned long long *__val)
1090 {
1091         struct thread_data *td = data;
1092         unsigned long long v = *__val;
1093
1094         if (parse_is_percent(v)) {
1095                 td->o.size = 0;
1096                 td->o.size_percent = -1ULL - v;
1097         } else
1098                 td->o.size = v;
1099
1100         return 0;
1101 }
1102
1103 static int rw_verify(struct fio_option *o, void *data)
1104 {
1105         struct thread_data *td = data;
1106
1107         if (read_only && td_write(td)) {
1108                 log_err("fio: job <%s> has write bit set, but fio is in"
1109                         " read-only mode\n", td->o.name);
1110                 return 1;
1111         }
1112
1113         return 0;
1114 }
1115
1116 static int gtod_cpu_verify(struct fio_option *o, void *data)
1117 {
1118 #ifndef FIO_HAVE_CPU_AFFINITY
1119         struct thread_data *td = data;
1120
1121         if (td->o.gtod_cpu) {
1122                 log_err("fio: platform must support CPU affinity for"
1123                         "gettimeofday() offloading\n");
1124                 return 1;
1125         }
1126 #endif
1127
1128         return 0;
1129 }
1130
1131 /*
1132  * Option grouping
1133  */
1134 static struct opt_group fio_opt_groups[] = {
1135         {
1136                 .name   = "General",
1137                 .mask   = FIO_OPT_C_GENERAL,
1138         },
1139         {
1140                 .name   = "I/O",
1141                 .mask   = FIO_OPT_C_IO,
1142         },
1143         {
1144                 .name   = "File",
1145                 .mask   = FIO_OPT_C_FILE,
1146         },
1147         {
1148                 .name   = "Statistics",
1149                 .mask   = FIO_OPT_C_STAT,
1150         },
1151         {
1152                 .name   = "Logging",
1153                 .mask   = FIO_OPT_C_LOG,
1154         },
1155         {
1156                 .name   = "Profiles",
1157                 .mask   = FIO_OPT_C_PROFILE,
1158         },
1159         {
1160                 .name   = NULL,
1161         },
1162 };
1163
1164 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1165                                                unsigned int inv_mask)
1166 {
1167         struct opt_group *og;
1168         int i;
1169
1170         if (*mask == inv_mask || !*mask)
1171                 return NULL;
1172
1173         for (i = 0; ogs[i].name; i++) {
1174                 og = &ogs[i];
1175
1176                 if (*mask & og->mask) {
1177                         *mask &= ~(og->mask);
1178                         return og;
1179                 }
1180         }
1181
1182         return NULL;
1183 }
1184
1185 struct opt_group *opt_group_from_mask(unsigned int *mask)
1186 {
1187         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1188 }
1189
1190 static struct opt_group fio_opt_cat_groups[] = {
1191         {
1192                 .name   = "Latency profiling",
1193                 .mask   = FIO_OPT_G_LATPROF,
1194         },
1195         {
1196                 .name   = "Rate",
1197                 .mask   = FIO_OPT_G_RATE,
1198         },
1199         {
1200                 .name   = "Zone",
1201                 .mask   = FIO_OPT_G_ZONE,
1202         },
1203         {
1204                 .name   = "Read/write mix",
1205                 .mask   = FIO_OPT_G_RWMIX,
1206         },
1207         {
1208                 .name   = "Verify",
1209                 .mask   = FIO_OPT_G_VERIFY,
1210         },
1211         {
1212                 .name   = "Trim",
1213                 .mask   = FIO_OPT_G_TRIM,
1214         },
1215         {
1216                 .name   = "I/O Logging",
1217                 .mask   = FIO_OPT_G_IOLOG,
1218         },
1219         {
1220                 .name   = "I/O Depth",
1221                 .mask   = FIO_OPT_G_IO_DEPTH,
1222         },
1223         {
1224                 .name   = "I/O Flow",
1225                 .mask   = FIO_OPT_G_IO_FLOW,
1226         },
1227         {
1228                 .name   = "Description",
1229                 .mask   = FIO_OPT_G_DESC,
1230         },
1231         {
1232                 .name   = "Filename",
1233                 .mask   = FIO_OPT_G_FILENAME,
1234         },
1235         {
1236                 .name   = "General I/O",
1237                 .mask   = FIO_OPT_G_IO_BASIC,
1238         },
1239         {
1240                 .name   = "Cgroups",
1241                 .mask   = FIO_OPT_G_CGROUP,
1242         },
1243         {
1244                 .name   = "Runtime",
1245                 .mask   = FIO_OPT_G_RUNTIME,
1246         },
1247         {
1248                 .name   = "Process",
1249                 .mask   = FIO_OPT_G_PROCESS,
1250         },
1251         {
1252                 .name   = "Job credentials / priority",
1253                 .mask   = FIO_OPT_G_CRED,
1254         },
1255         {
1256                 .name   = "Clock settings",
1257                 .mask   = FIO_OPT_G_CLOCK,
1258         },
1259         {
1260                 .name   = "I/O Type",
1261                 .mask   = FIO_OPT_G_IO_TYPE,
1262         },
1263         {
1264                 .name   = "I/O Thinktime",
1265                 .mask   = FIO_OPT_G_THINKTIME,
1266         },
1267         {
1268                 .name   = "Randomizations",
1269                 .mask   = FIO_OPT_G_RANDOM,
1270         },
1271         {
1272                 .name   = "I/O buffers",
1273                 .mask   = FIO_OPT_G_IO_BUF,
1274         },
1275         {
1276                 .name   = "Tiobench profile",
1277                 .mask   = FIO_OPT_G_TIOBENCH,
1278         },
1279         {
1280                 .name   = "MTD",
1281                 .mask   = FIO_OPT_G_MTD,
1282         },
1283
1284         {
1285                 .name   = NULL,
1286         }
1287 };
1288
1289 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1290 {
1291         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1292 }
1293
1294 /*
1295  * Map of job/command line options
1296  */
1297 struct fio_option fio_options[FIO_MAX_OPTS] = {
1298         {
1299                 .name   = "description",
1300                 .lname  = "Description of job",
1301                 .type   = FIO_OPT_STR_STORE,
1302                 .off1   = td_var_offset(description),
1303                 .help   = "Text job description",
1304                 .category = FIO_OPT_C_GENERAL,
1305                 .group  = FIO_OPT_G_DESC,
1306         },
1307         {
1308                 .name   = "name",
1309                 .lname  = "Job name",
1310                 .type   = FIO_OPT_STR_STORE,
1311                 .off1   = td_var_offset(name),
1312                 .help   = "Name of this job",
1313                 .category = FIO_OPT_C_GENERAL,
1314                 .group  = FIO_OPT_G_DESC,
1315         },
1316         {
1317                 .name   = "filename",
1318                 .lname  = "Filename(s)",
1319                 .type   = FIO_OPT_STR_STORE,
1320                 .off1   = td_var_offset(filename),
1321                 .cb     = str_filename_cb,
1322                 .prio   = -1, /* must come after "directory" */
1323                 .help   = "File(s) to use for the workload",
1324                 .category = FIO_OPT_C_FILE,
1325                 .group  = FIO_OPT_G_FILENAME,
1326         },
1327         {
1328                 .name   = "directory",
1329                 .lname  = "Directory",
1330                 .type   = FIO_OPT_STR_STORE,
1331                 .off1   = td_var_offset(directory),
1332                 .cb     = str_directory_cb,
1333                 .help   = "Directory to store files in",
1334                 .category = FIO_OPT_C_FILE,
1335                 .group  = FIO_OPT_G_FILENAME,
1336         },
1337         {
1338                 .name   = "filename_format",
1339                 .type   = FIO_OPT_STR_STORE,
1340                 .off1   = td_var_offset(filename_format),
1341                 .prio   = -1, /* must come after "directory" */
1342                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1343                 .def    = "$jobname.$jobnum.$filenum",
1344                 .category = FIO_OPT_C_FILE,
1345                 .group  = FIO_OPT_G_FILENAME,
1346         },
1347         {
1348                 .name   = "lockfile",
1349                 .lname  = "Lockfile",
1350                 .type   = FIO_OPT_STR,
1351                 .off1   = td_var_offset(file_lock_mode),
1352                 .help   = "Lock file when doing IO to it",
1353                 .prio   = 1,
1354                 .parent = "filename",
1355                 .hide   = 0,
1356                 .def    = "none",
1357                 .category = FIO_OPT_C_FILE,
1358                 .group  = FIO_OPT_G_FILENAME,
1359                 .posval = {
1360                           { .ival = "none",
1361                             .oval = FILE_LOCK_NONE,
1362                             .help = "No file locking",
1363                           },
1364                           { .ival = "exclusive",
1365                             .oval = FILE_LOCK_EXCLUSIVE,
1366                             .help = "Exclusive file lock",
1367                           },
1368                           {
1369                             .ival = "readwrite",
1370                             .oval = FILE_LOCK_READWRITE,
1371                             .help = "Read vs write lock",
1372                           },
1373                 },
1374         },
1375         {
1376                 .name   = "opendir",
1377                 .lname  = "Open directory",
1378                 .type   = FIO_OPT_STR_STORE,
1379                 .off1   = td_var_offset(opendir),
1380                 .cb     = str_opendir_cb,
1381                 .help   = "Recursively add files from this directory and down",
1382                 .category = FIO_OPT_C_FILE,
1383                 .group  = FIO_OPT_G_FILENAME,
1384         },
1385         {
1386                 .name   = "rw",
1387                 .lname  = "Read/write",
1388                 .alias  = "readwrite",
1389                 .type   = FIO_OPT_STR,
1390                 .cb     = str_rw_cb,
1391                 .off1   = td_var_offset(td_ddir),
1392                 .help   = "IO direction",
1393                 .def    = "read",
1394                 .verify = rw_verify,
1395                 .category = FIO_OPT_C_IO,
1396                 .group  = FIO_OPT_G_IO_BASIC,
1397                 .posval = {
1398                           { .ival = "read",
1399                             .oval = TD_DDIR_READ,
1400                             .help = "Sequential read",
1401                           },
1402                           { .ival = "write",
1403                             .oval = TD_DDIR_WRITE,
1404                             .help = "Sequential write",
1405                           },
1406                           { .ival = "trim",
1407                             .oval = TD_DDIR_TRIM,
1408                             .help = "Sequential trim",
1409                           },
1410                           { .ival = "randread",
1411                             .oval = TD_DDIR_RANDREAD,
1412                             .help = "Random read",
1413                           },
1414                           { .ival = "randwrite",
1415                             .oval = TD_DDIR_RANDWRITE,
1416                             .help = "Random write",
1417                           },
1418                           { .ival = "randtrim",
1419                             .oval = TD_DDIR_RANDTRIM,
1420                             .help = "Random trim",
1421                           },
1422                           { .ival = "rw",
1423                             .oval = TD_DDIR_RW,
1424                             .help = "Sequential read and write mix",
1425                           },
1426                           { .ival = "readwrite",
1427                             .oval = TD_DDIR_RW,
1428                             .help = "Sequential read and write mix",
1429                           },
1430                           { .ival = "randrw",
1431                             .oval = TD_DDIR_RANDRW,
1432                             .help = "Random read and write mix"
1433                           },
1434                           { .ival = "trimwrite",
1435                             .oval = TD_DDIR_TRIMWRITE,
1436                             .help = "Trim and write mix, trims preceding writes"
1437                           },
1438                 },
1439         },
1440         {
1441                 .name   = "rw_sequencer",
1442                 .lname  = "RW Sequencer",
1443                 .type   = FIO_OPT_STR,
1444                 .off1   = td_var_offset(rw_seq),
1445                 .help   = "IO offset generator modifier",
1446                 .def    = "sequential",
1447                 .category = FIO_OPT_C_IO,
1448                 .group  = FIO_OPT_G_IO_BASIC,
1449                 .posval = {
1450                           { .ival = "sequential",
1451                             .oval = RW_SEQ_SEQ,
1452                             .help = "Generate sequential offsets",
1453                           },
1454                           { .ival = "identical",
1455                             .oval = RW_SEQ_IDENT,
1456                             .help = "Generate identical offsets",
1457                           },
1458                 },
1459         },
1460
1461         {
1462                 .name   = "ioengine",
1463                 .lname  = "IO Engine",
1464                 .type   = FIO_OPT_STR_STORE,
1465                 .off1   = td_var_offset(ioengine),
1466                 .help   = "IO engine to use",
1467                 .def    = FIO_PREFERRED_ENGINE,
1468                 .category = FIO_OPT_C_IO,
1469                 .group  = FIO_OPT_G_IO_BASIC,
1470                 .posval = {
1471                           { .ival = "sync",
1472                             .help = "Use read/write",
1473                           },
1474                           { .ival = "psync",
1475                             .help = "Use pread/pwrite",
1476                           },
1477                           { .ival = "vsync",
1478                             .help = "Use readv/writev",
1479                           },
1480 #ifdef CONFIG_PWRITEV
1481                           { .ival = "pvsync",
1482                             .help = "Use preadv/pwritev",
1483                           },
1484 #endif
1485 #ifdef CONFIG_LIBAIO
1486                           { .ival = "libaio",
1487                             .help = "Linux native asynchronous IO",
1488                           },
1489 #endif
1490 #ifdef CONFIG_POSIXAIO
1491                           { .ival = "posixaio",
1492                             .help = "POSIX asynchronous IO",
1493                           },
1494 #endif
1495 #ifdef CONFIG_SOLARISAIO
1496                           { .ival = "solarisaio",
1497                             .help = "Solaris native asynchronous IO",
1498                           },
1499 #endif
1500 #ifdef CONFIG_WINDOWSAIO
1501                           { .ival = "windowsaio",
1502                             .help = "Windows native asynchronous IO"
1503                           },
1504 #endif
1505 #ifdef CONFIG_RBD
1506                           { .ival = "rbd",
1507                             .help = "Rados Block Device asynchronous IO"
1508                           },
1509 #endif
1510                           { .ival = "mmap",
1511                             .help = "Memory mapped IO"
1512                           },
1513 #ifdef CONFIG_LINUX_SPLICE
1514                           { .ival = "splice",
1515                             .help = "splice/vmsplice based IO",
1516                           },
1517                           { .ival = "netsplice",
1518                             .help = "splice/vmsplice to/from the network",
1519                           },
1520 #endif
1521 #ifdef FIO_HAVE_SGIO
1522                           { .ival = "sg",
1523                             .help = "SCSI generic v3 IO",
1524                           },
1525 #endif
1526                           { .ival = "null",
1527                             .help = "Testing engine (no data transfer)",
1528                           },
1529                           { .ival = "net",
1530                             .help = "Network IO",
1531                           },
1532                           { .ival = "cpuio",
1533                             .help = "CPU cycle burner engine",
1534                           },
1535 #ifdef CONFIG_GUASI
1536                           { .ival = "guasi",
1537                             .help = "GUASI IO engine",
1538                           },
1539 #endif
1540 #ifdef FIO_HAVE_BINJECT
1541                           { .ival = "binject",
1542                             .help = "binject direct inject block engine",
1543                           },
1544 #endif
1545 #ifdef CONFIG_RDMA
1546                           { .ival = "rdma",
1547                             .help = "RDMA IO engine",
1548                           },
1549 #endif
1550 #ifdef CONFIG_FUSION_AW
1551                           { .ival = "fusion-aw-sync",
1552                             .help = "Fusion-io atomic write engine",
1553                           },
1554 #endif
1555 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1556                           { .ival = "e4defrag",
1557                             .help = "ext4 defrag engine",
1558                           },
1559 #endif
1560 #ifdef CONFIG_LINUX_FALLOCATE
1561                           { .ival = "falloc",
1562                             .help = "fallocate() file based engine",
1563                           },
1564 #endif
1565 #ifdef CONFIG_GFAPI
1566                           { .ival = "gfapi",
1567                             .help = "Glusterfs libgfapi(sync) based engine"
1568                           },
1569                           { .ival = "gfapi_async",
1570                             .help = "Glusterfs libgfapi(async) based engine"
1571                           },
1572 #endif
1573 #ifdef CONFIG_LIBHDFS
1574                           { .ival = "libhdfs",
1575                             .help = "Hadoop Distributed Filesystem (HDFS) engine"
1576                           },
1577 #endif
1578                           { .ival = "external",
1579                             .help = "Load external engine (append name)",
1580                           },
1581                 },
1582         },
1583         {
1584                 .name   = "iodepth",
1585                 .lname  = "IO Depth",
1586                 .type   = FIO_OPT_INT,
1587                 .off1   = td_var_offset(iodepth),
1588                 .help   = "Number of IO buffers to keep in flight",
1589                 .minval = 1,
1590                 .interval = 1,
1591                 .def    = "1",
1592                 .category = FIO_OPT_C_IO,
1593                 .group  = FIO_OPT_G_IO_BASIC,
1594         },
1595         {
1596                 .name   = "iodepth_batch",
1597                 .lname  = "IO Depth batch",
1598                 .alias  = "iodepth_batch_submit",
1599                 .type   = FIO_OPT_INT,
1600                 .off1   = td_var_offset(iodepth_batch),
1601                 .help   = "Number of IO buffers to submit in one go",
1602                 .parent = "iodepth",
1603                 .hide   = 1,
1604                 .minval = 1,
1605                 .interval = 1,
1606                 .def    = "1",
1607                 .category = FIO_OPT_C_IO,
1608                 .group  = FIO_OPT_G_IO_BASIC,
1609         },
1610         {
1611                 .name   = "iodepth_batch_complete",
1612                 .lname  = "IO Depth batch complete",
1613                 .type   = FIO_OPT_INT,
1614                 .off1   = td_var_offset(iodepth_batch_complete),
1615                 .help   = "Number of IO buffers to retrieve in one go",
1616                 .parent = "iodepth",
1617                 .hide   = 1,
1618                 .minval = 0,
1619                 .interval = 1,
1620                 .def    = "1",
1621                 .category = FIO_OPT_C_IO,
1622                 .group  = FIO_OPT_G_IO_BASIC,
1623         },
1624         {
1625                 .name   = "iodepth_low",
1626                 .lname  = "IO Depth batch low",
1627                 .type   = FIO_OPT_INT,
1628                 .off1   = td_var_offset(iodepth_low),
1629                 .help   = "Low water mark for queuing depth",
1630                 .parent = "iodepth",
1631                 .hide   = 1,
1632                 .interval = 1,
1633                 .category = FIO_OPT_C_IO,
1634                 .group  = FIO_OPT_G_IO_BASIC,
1635         },
1636         {
1637                 .name   = "io_submit_mode",
1638                 .lname  = "IO submit mode",
1639                 .type   = FIO_OPT_STR,
1640                 .off1   = td_var_offset(io_submit_mode),
1641                 .help   = "How IO submissions and completions are done",
1642                 .def    = "inline",
1643                 .category = FIO_OPT_C_IO,
1644                 .group  = FIO_OPT_G_IO_BASIC,
1645                 .posval = {
1646                           { .ival = "inline",
1647                             .oval = IO_MODE_INLINE,
1648                             .help = "Submit and complete IO inline",
1649                           },
1650                           { .ival = "offload",
1651                             .oval = IO_MODE_OFFLOAD,
1652                             .help = "Offload submit and complete to threads",
1653                           },
1654                 },
1655         },
1656         {
1657                 .name   = "size",
1658                 .lname  = "Size",
1659                 .type   = FIO_OPT_STR_VAL,
1660                 .cb     = str_size_cb,
1661                 .off1   = td_var_offset(size),
1662                 .help   = "Total size of device or files",
1663                 .interval = 1024 * 1024,
1664                 .category = FIO_OPT_C_IO,
1665                 .group  = FIO_OPT_G_INVALID,
1666         },
1667         {
1668                 .name   = "io_size",
1669                 .alias  = "io_limit",
1670                 .lname  = "IO Size",
1671                 .type   = FIO_OPT_STR_VAL,
1672                 .off1   = td_var_offset(io_limit),
1673                 .interval = 1024 * 1024,
1674                 .category = FIO_OPT_C_IO,
1675                 .group  = FIO_OPT_G_INVALID,
1676         },
1677         {
1678                 .name   = "fill_device",
1679                 .lname  = "Fill device",
1680                 .alias  = "fill_fs",
1681                 .type   = FIO_OPT_BOOL,
1682                 .off1   = td_var_offset(fill_device),
1683                 .help   = "Write until an ENOSPC error occurs",
1684                 .def    = "0",
1685                 .category = FIO_OPT_C_FILE,
1686                 .group  = FIO_OPT_G_INVALID,
1687         },
1688         {
1689                 .name   = "filesize",
1690                 .lname  = "File size",
1691                 .type   = FIO_OPT_STR_VAL,
1692                 .off1   = td_var_offset(file_size_low),
1693                 .off2   = td_var_offset(file_size_high),
1694                 .minval = 1,
1695                 .help   = "Size of individual files",
1696                 .interval = 1024 * 1024,
1697                 .category = FIO_OPT_C_FILE,
1698                 .group  = FIO_OPT_G_INVALID,
1699         },
1700         {
1701                 .name   = "file_append",
1702                 .lname  = "File append",
1703                 .type   = FIO_OPT_BOOL,
1704                 .off1   = td_var_offset(file_append),
1705                 .help   = "IO will start at the end of the file(s)",
1706                 .def    = "0",
1707                 .category = FIO_OPT_C_FILE,
1708                 .group  = FIO_OPT_G_INVALID,
1709         },
1710         {
1711                 .name   = "offset",
1712                 .lname  = "IO offset",
1713                 .alias  = "fileoffset",
1714                 .type   = FIO_OPT_STR_VAL,
1715                 .off1   = td_var_offset(start_offset),
1716                 .help   = "Start IO from this offset",
1717                 .def    = "0",
1718                 .interval = 1024 * 1024,
1719                 .category = FIO_OPT_C_IO,
1720                 .group  = FIO_OPT_G_INVALID,
1721         },
1722         {
1723                 .name   = "offset_increment",
1724                 .lname  = "IO offset increment",
1725                 .type   = FIO_OPT_STR_VAL,
1726                 .off1   = td_var_offset(offset_increment),
1727                 .help   = "What is the increment from one offset to the next",
1728                 .parent = "offset",
1729                 .hide   = 1,
1730                 .def    = "0",
1731                 .interval = 1024 * 1024,
1732                 .category = FIO_OPT_C_IO,
1733                 .group  = FIO_OPT_G_INVALID,
1734         },
1735         {
1736                 .name   = "number_ios",
1737                 .lname  = "Number of IOs to perform",
1738                 .type   = FIO_OPT_STR_VAL,
1739                 .off1   = td_var_offset(number_ios),
1740                 .help   = "Force job completion after this number of IOs",
1741                 .def    = "0",
1742                 .category = FIO_OPT_C_IO,
1743                 .group  = FIO_OPT_G_INVALID,
1744         },
1745         {
1746                 .name   = "bs",
1747                 .lname  = "Block size",
1748                 .alias  = "blocksize",
1749                 .type   = FIO_OPT_INT,
1750                 .off1   = td_var_offset(bs[DDIR_READ]),
1751                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1752                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1753                 .minval = 1,
1754                 .help   = "Block size unit",
1755                 .def    = "4k",
1756                 .parent = "rw",
1757                 .hide   = 1,
1758                 .interval = 512,
1759                 .category = FIO_OPT_C_IO,
1760                 .group  = FIO_OPT_G_INVALID,
1761         },
1762         {
1763                 .name   = "ba",
1764                 .lname  = "Block size align",
1765                 .alias  = "blockalign",
1766                 .type   = FIO_OPT_INT,
1767                 .off1   = td_var_offset(ba[DDIR_READ]),
1768                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1769                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1770                 .minval = 1,
1771                 .help   = "IO block offset alignment",
1772                 .parent = "rw",
1773                 .hide   = 1,
1774                 .interval = 512,
1775                 .category = FIO_OPT_C_IO,
1776                 .group  = FIO_OPT_G_INVALID,
1777         },
1778         {
1779                 .name   = "bsrange",
1780                 .lname  = "Block size range",
1781                 .alias  = "blocksize_range",
1782                 .type   = FIO_OPT_RANGE,
1783                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1784                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1785                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1786                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1787                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1788                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1789                 .minval = 1,
1790                 .help   = "Set block size range (in more detail than bs)",
1791                 .parent = "rw",
1792                 .hide   = 1,
1793                 .interval = 4096,
1794                 .category = FIO_OPT_C_IO,
1795                 .group  = FIO_OPT_G_INVALID,
1796         },
1797         {
1798                 .name   = "bssplit",
1799                 .lname  = "Block size split",
1800                 .type   = FIO_OPT_STR,
1801                 .cb     = str_bssplit_cb,
1802                 .off1   = td_var_offset(bssplit),
1803                 .help   = "Set a specific mix of block sizes",
1804                 .parent = "rw",
1805                 .hide   = 1,
1806                 .category = FIO_OPT_C_IO,
1807                 .group  = FIO_OPT_G_INVALID,
1808         },
1809         {
1810                 .name   = "bs_unaligned",
1811                 .lname  = "Block size unaligned",
1812                 .alias  = "blocksize_unaligned",
1813                 .type   = FIO_OPT_STR_SET,
1814                 .off1   = td_var_offset(bs_unaligned),
1815                 .help   = "Don't sector align IO buffer sizes",
1816                 .parent = "rw",
1817                 .hide   = 1,
1818                 .category = FIO_OPT_C_IO,
1819                 .group  = FIO_OPT_G_INVALID,
1820         },
1821         {
1822                 .name   = "bs_is_seq_rand",
1823                 .lname  = "Block size division is seq/random (not read/write)",
1824                 .type   = FIO_OPT_BOOL,
1825                 .off1   = td_var_offset(bs_is_seq_rand),
1826                 .help   = "Consider any blocksize setting to be sequential,random",
1827                 .def    = "0",
1828                 .parent = "blocksize",
1829                 .category = FIO_OPT_C_IO,
1830                 .group  = FIO_OPT_G_INVALID,
1831         },
1832         {
1833                 .name   = "randrepeat",
1834                 .lname  = "Random repeatable",
1835                 .type   = FIO_OPT_BOOL,
1836                 .off1   = td_var_offset(rand_repeatable),
1837                 .help   = "Use repeatable random IO pattern",
1838                 .def    = "1",
1839                 .parent = "rw",
1840                 .hide   = 1,
1841                 .category = FIO_OPT_C_IO,
1842                 .group  = FIO_OPT_G_RANDOM,
1843         },
1844         {
1845                 .name   = "randseed",
1846                 .lname  = "The random generator seed",
1847                 .type   = FIO_OPT_STR_VAL,
1848                 .off1   = td_var_offset(rand_seed),
1849                 .help   = "Set the random generator seed value",
1850                 .def    = "0x89",
1851                 .parent = "rw",
1852                 .category = FIO_OPT_C_IO,
1853                 .group  = FIO_OPT_G_RANDOM,
1854         },
1855         {
1856                 .name   = "use_os_rand",
1857                 .lname  = "Use OS random",
1858                 .type   = FIO_OPT_DEPRECATED,
1859                 .off1   = td_var_offset(dep_use_os_rand),
1860                 .category = FIO_OPT_C_IO,
1861                 .group  = FIO_OPT_G_RANDOM,
1862         },
1863         {
1864                 .name   = "norandommap",
1865                 .lname  = "No randommap",
1866                 .type   = FIO_OPT_STR_SET,
1867                 .off1   = td_var_offset(norandommap),
1868                 .help   = "Accept potential duplicate random blocks",
1869                 .parent = "rw",
1870                 .hide   = 1,
1871                 .hide_on_set = 1,
1872                 .category = FIO_OPT_C_IO,
1873                 .group  = FIO_OPT_G_RANDOM,
1874         },
1875         {
1876                 .name   = "softrandommap",
1877                 .lname  = "Soft randommap",
1878                 .type   = FIO_OPT_BOOL,
1879                 .off1   = td_var_offset(softrandommap),
1880                 .help   = "Set norandommap if randommap allocation fails",
1881                 .parent = "norandommap",
1882                 .hide   = 1,
1883                 .def    = "0",
1884                 .category = FIO_OPT_C_IO,
1885                 .group  = FIO_OPT_G_RANDOM,
1886         },
1887         {
1888                 .name   = "random_generator",
1889                 .type   = FIO_OPT_STR,
1890                 .off1   = td_var_offset(random_generator),
1891                 .help   = "Type of random number generator to use",
1892                 .def    = "tausworthe",
1893                 .posval = {
1894                           { .ival = "tausworthe",
1895                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1896                             .help = "Strong Tausworthe generator",
1897                           },
1898                           { .ival = "lfsr",
1899                             .oval = FIO_RAND_GEN_LFSR,
1900                             .help = "Variable length LFSR",
1901                           },
1902                           {
1903                             .ival = "tausworthe64",
1904                             .oval = FIO_RAND_GEN_TAUSWORTHE64,
1905                             .help = "64-bit Tausworthe variant",
1906                           },
1907                 },
1908                 .category = FIO_OPT_C_IO,
1909                 .group  = FIO_OPT_G_RANDOM,
1910         },
1911         {
1912                 .name   = "random_distribution",
1913                 .type   = FIO_OPT_STR,
1914                 .off1   = td_var_offset(random_distribution),
1915                 .cb     = str_random_distribution_cb,
1916                 .help   = "Random offset distribution generator",
1917                 .def    = "random",
1918                 .posval = {
1919                           { .ival = "random",
1920                             .oval = FIO_RAND_DIST_RANDOM,
1921                             .help = "Completely random",
1922                           },
1923                           { .ival = "zipf",
1924                             .oval = FIO_RAND_DIST_ZIPF,
1925                             .help = "Zipf distribution",
1926                           },
1927                           { .ival = "pareto",
1928                             .oval = FIO_RAND_DIST_PARETO,
1929                             .help = "Pareto distribution",
1930                           },
1931                           { .ival = "normal",
1932                             .oval = FIO_RAND_DIST_GAUSS,
1933                             .help = "Normal (gaussian) distribution",
1934                           },
1935                 },
1936                 .category = FIO_OPT_C_IO,
1937                 .group  = FIO_OPT_G_RANDOM,
1938         },
1939         {
1940                 .name   = "percentage_random",
1941                 .lname  = "Percentage Random",
1942                 .type   = FIO_OPT_INT,
1943                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1944                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1945                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1946                 .maxval = 100,
1947                 .help   = "Percentage of seq/random mix that should be random",
1948                 .def    = "100,100,100",
1949                 .interval = 5,
1950                 .inverse = "percentage_sequential",
1951                 .category = FIO_OPT_C_IO,
1952                 .group  = FIO_OPT_G_RANDOM,
1953         },
1954         {
1955                 .name   = "percentage_sequential",
1956                 .lname  = "Percentage Sequential",
1957                 .type   = FIO_OPT_DEPRECATED,
1958                 .category = FIO_OPT_C_IO,
1959                 .group  = FIO_OPT_G_RANDOM,
1960         },
1961         {
1962                 .name   = "allrandrepeat",
1963                 .type   = FIO_OPT_BOOL,
1964                 .off1   = td_var_offset(allrand_repeatable),
1965                 .help   = "Use repeatable random numbers for everything",
1966                 .def    = "0",
1967                 .category = FIO_OPT_C_IO,
1968                 .group  = FIO_OPT_G_RANDOM,
1969         },
1970         {
1971                 .name   = "nrfiles",
1972                 .lname  = "Number of files",
1973                 .alias  = "nr_files",
1974                 .type   = FIO_OPT_INT,
1975                 .off1   = td_var_offset(nr_files),
1976                 .help   = "Split job workload between this number of files",
1977                 .def    = "1",
1978                 .interval = 1,
1979                 .category = FIO_OPT_C_FILE,
1980                 .group  = FIO_OPT_G_INVALID,
1981         },
1982         {
1983                 .name   = "openfiles",
1984                 .lname  = "Number of open files",
1985                 .type   = FIO_OPT_INT,
1986                 .off1   = td_var_offset(open_files),
1987                 .help   = "Number of files to keep open at the same time",
1988                 .category = FIO_OPT_C_FILE,
1989                 .group  = FIO_OPT_G_INVALID,
1990         },
1991         {
1992                 .name   = "file_service_type",
1993                 .lname  = "File service type",
1994                 .type   = FIO_OPT_STR,
1995                 .cb     = str_fst_cb,
1996                 .off1   = td_var_offset(file_service_type),
1997                 .help   = "How to select which file to service next",
1998                 .def    = "roundrobin",
1999                 .category = FIO_OPT_C_FILE,
2000                 .group  = FIO_OPT_G_INVALID,
2001                 .posval = {
2002                           { .ival = "random",
2003                             .oval = FIO_FSERVICE_RANDOM,
2004                             .help = "Choose a file at random",
2005                           },
2006                           { .ival = "roundrobin",
2007                             .oval = FIO_FSERVICE_RR,
2008                             .help = "Round robin select files",
2009                           },
2010                           { .ival = "sequential",
2011                             .oval = FIO_FSERVICE_SEQ,
2012                             .help = "Finish one file before moving to the next",
2013                           },
2014                 },
2015                 .parent = "nrfiles",
2016                 .hide   = 1,
2017         },
2018 #ifdef CONFIG_POSIX_FALLOCATE
2019         {
2020                 .name   = "fallocate",
2021                 .lname  = "Fallocate",
2022                 .type   = FIO_OPT_STR,
2023                 .off1   = td_var_offset(fallocate_mode),
2024                 .help   = "Whether pre-allocation is performed when laying out files",
2025                 .def    = "posix",
2026                 .category = FIO_OPT_C_FILE,
2027                 .group  = FIO_OPT_G_INVALID,
2028                 .posval = {
2029                           { .ival = "none",
2030                             .oval = FIO_FALLOCATE_NONE,
2031                             .help = "Do not pre-allocate space",
2032                           },
2033                           { .ival = "posix",
2034                             .oval = FIO_FALLOCATE_POSIX,
2035                             .help = "Use posix_fallocate()",
2036                           },
2037 #ifdef CONFIG_LINUX_FALLOCATE
2038                           { .ival = "keep",
2039                             .oval = FIO_FALLOCATE_KEEP_SIZE,
2040                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
2041                           },
2042 #endif
2043                           /* Compatibility with former boolean values */
2044                           { .ival = "0",
2045                             .oval = FIO_FALLOCATE_NONE,
2046                             .help = "Alias for 'none'",
2047                           },
2048                           { .ival = "1",
2049                             .oval = FIO_FALLOCATE_POSIX,
2050                             .help = "Alias for 'posix'",
2051                           },
2052                 },
2053         },
2054 #endif  /* CONFIG_POSIX_FALLOCATE */
2055         {
2056                 .name   = "fadvise_hint",
2057                 .lname  = "Fadvise hint",
2058                 .type   = FIO_OPT_BOOL,
2059                 .off1   = td_var_offset(fadvise_hint),
2060                 .help   = "Use fadvise() to advise the kernel on IO pattern",
2061                 .def    = "1",
2062                 .category = FIO_OPT_C_FILE,
2063                 .group  = FIO_OPT_G_INVALID,
2064         },
2065 #ifdef FIO_HAVE_STREAMID
2066         {
2067                 .name   = "fadvise_stream",
2068                 .lname  = "Fadvise stream",
2069                 .type   = FIO_OPT_INT,
2070                 .off1   = td_var_offset(fadvise_stream),
2071                 .help   = "Use fadvise() to set stream ID",
2072                 .category = FIO_OPT_C_FILE,
2073                 .group  = FIO_OPT_G_INVALID,
2074         },
2075 #endif
2076         {
2077                 .name   = "fsync",
2078                 .lname  = "Fsync",
2079                 .type   = FIO_OPT_INT,
2080                 .off1   = td_var_offset(fsync_blocks),
2081                 .help   = "Issue fsync for writes every given number of blocks",
2082                 .def    = "0",
2083                 .interval = 1,
2084                 .category = FIO_OPT_C_FILE,
2085                 .group  = FIO_OPT_G_INVALID,
2086         },
2087         {
2088                 .name   = "fdatasync",
2089                 .lname  = "Fdatasync",
2090                 .type   = FIO_OPT_INT,
2091                 .off1   = td_var_offset(fdatasync_blocks),
2092                 .help   = "Issue fdatasync for writes every given number of blocks",
2093                 .def    = "0",
2094                 .interval = 1,
2095                 .category = FIO_OPT_C_FILE,
2096                 .group  = FIO_OPT_G_INVALID,
2097         },
2098         {
2099                 .name   = "write_barrier",
2100                 .lname  = "Write barrier",
2101                 .type   = FIO_OPT_INT,
2102                 .off1   = td_var_offset(barrier_blocks),
2103                 .help   = "Make every Nth write a barrier write",
2104                 .def    = "0",
2105                 .interval = 1,
2106                 .category = FIO_OPT_C_IO,
2107                 .group  = FIO_OPT_G_INVALID,
2108         },
2109 #ifdef CONFIG_SYNC_FILE_RANGE
2110         {
2111                 .name   = "sync_file_range",
2112                 .lname  = "Sync file range",
2113                 .posval = {
2114                           { .ival = "wait_before",
2115                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2116                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2117                             .orval  = 1,
2118                           },
2119                           { .ival = "write",
2120                             .oval = SYNC_FILE_RANGE_WRITE,
2121                             .help = "SYNC_FILE_RANGE_WRITE",
2122                             .orval  = 1,
2123                           },
2124                           {
2125                             .ival = "wait_after",
2126                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2127                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2128                             .orval  = 1,
2129                           },
2130                 },
2131                 .type   = FIO_OPT_STR_MULTI,
2132                 .cb     = str_sfr_cb,
2133                 .off1   = td_var_offset(sync_file_range),
2134                 .help   = "Use sync_file_range()",
2135                 .category = FIO_OPT_C_FILE,
2136                 .group  = FIO_OPT_G_INVALID,
2137         },
2138 #endif
2139         {
2140                 .name   = "direct",
2141                 .lname  = "Direct I/O",
2142                 .type   = FIO_OPT_BOOL,
2143                 .off1   = td_var_offset(odirect),
2144                 .help   = "Use O_DIRECT IO (negates buffered)",
2145                 .def    = "0",
2146                 .inverse = "buffered",
2147                 .category = FIO_OPT_C_IO,
2148                 .group  = FIO_OPT_G_IO_TYPE,
2149         },
2150         {
2151                 .name   = "atomic",
2152                 .lname  = "Atomic I/O",
2153                 .type   = FIO_OPT_BOOL,
2154                 .off1   = td_var_offset(oatomic),
2155                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2156                 .def    = "0",
2157                 .category = FIO_OPT_C_IO,
2158                 .group  = FIO_OPT_G_IO_TYPE,
2159         },
2160         {
2161                 .name   = "buffered",
2162                 .lname  = "Buffered I/O",
2163                 .type   = FIO_OPT_BOOL,
2164                 .off1   = td_var_offset(odirect),
2165                 .neg    = 1,
2166                 .help   = "Use buffered IO (negates direct)",
2167                 .def    = "1",
2168                 .inverse = "direct",
2169                 .category = FIO_OPT_C_IO,
2170                 .group  = FIO_OPT_G_IO_TYPE,
2171         },
2172         {
2173                 .name   = "overwrite",
2174                 .lname  = "Overwrite",
2175                 .type   = FIO_OPT_BOOL,
2176                 .off1   = td_var_offset(overwrite),
2177                 .help   = "When writing, set whether to overwrite current data",
2178                 .def    = "0",
2179                 .category = FIO_OPT_C_FILE,
2180                 .group  = FIO_OPT_G_INVALID,
2181         },
2182         {
2183                 .name   = "loops",
2184                 .lname  = "Loops",
2185                 .type   = FIO_OPT_INT,
2186                 .off1   = td_var_offset(loops),
2187                 .help   = "Number of times to run the job",
2188                 .def    = "1",
2189                 .interval = 1,
2190                 .category = FIO_OPT_C_GENERAL,
2191                 .group  = FIO_OPT_G_RUNTIME,
2192         },
2193         {
2194                 .name   = "numjobs",
2195                 .lname  = "Number of jobs",
2196                 .type   = FIO_OPT_INT,
2197                 .off1   = td_var_offset(numjobs),
2198                 .help   = "Duplicate this job this many times",
2199                 .def    = "1",
2200                 .interval = 1,
2201                 .category = FIO_OPT_C_GENERAL,
2202                 .group  = FIO_OPT_G_RUNTIME,
2203         },
2204         {
2205                 .name   = "startdelay",
2206                 .lname  = "Start delay",
2207                 .type   = FIO_OPT_STR_VAL_TIME,
2208                 .off1   = td_var_offset(start_delay),
2209                 .off2   = td_var_offset(start_delay_high),
2210                 .help   = "Only start job when this period has passed",
2211                 .def    = "0",
2212                 .is_seconds = 1,
2213                 .is_time = 1,
2214                 .category = FIO_OPT_C_GENERAL,
2215                 .group  = FIO_OPT_G_RUNTIME,
2216         },
2217         {
2218                 .name   = "runtime",
2219                 .lname  = "Runtime",
2220                 .alias  = "timeout",
2221                 .type   = FIO_OPT_STR_VAL_TIME,
2222                 .off1   = td_var_offset(timeout),
2223                 .help   = "Stop workload when this amount of time has passed",
2224                 .def    = "0",
2225                 .is_seconds = 1,
2226                 .is_time = 1,
2227                 .category = FIO_OPT_C_GENERAL,
2228                 .group  = FIO_OPT_G_RUNTIME,
2229         },
2230         {
2231                 .name   = "time_based",
2232                 .lname  = "Time based",
2233                 .type   = FIO_OPT_STR_SET,
2234                 .off1   = td_var_offset(time_based),
2235                 .help   = "Keep running until runtime/timeout is met",
2236                 .category = FIO_OPT_C_GENERAL,
2237                 .group  = FIO_OPT_G_RUNTIME,
2238         },
2239         {
2240                 .name   = "verify_only",
2241                 .lname  = "Verify only",
2242                 .type   = FIO_OPT_STR_SET,
2243                 .off1   = td_var_offset(verify_only),
2244                 .help   = "Verifies previously written data is still valid",
2245                 .category = FIO_OPT_C_GENERAL,
2246                 .group  = FIO_OPT_G_RUNTIME,
2247         },
2248         {
2249                 .name   = "ramp_time",
2250                 .lname  = "Ramp time",
2251                 .type   = FIO_OPT_STR_VAL_TIME,
2252                 .off1   = td_var_offset(ramp_time),
2253                 .help   = "Ramp up time before measuring performance",
2254                 .is_seconds = 1,
2255                 .is_time = 1,
2256                 .category = FIO_OPT_C_GENERAL,
2257                 .group  = FIO_OPT_G_RUNTIME,
2258         },
2259         {
2260                 .name   = "clocksource",
2261                 .lname  = "Clock source",
2262                 .type   = FIO_OPT_STR,
2263                 .cb     = fio_clock_source_cb,
2264                 .off1   = td_var_offset(clocksource),
2265                 .help   = "What type of timing source to use",
2266                 .category = FIO_OPT_C_GENERAL,
2267                 .group  = FIO_OPT_G_CLOCK,
2268                 .posval = {
2269 #ifdef CONFIG_GETTIMEOFDAY
2270                           { .ival = "gettimeofday",
2271                             .oval = CS_GTOD,
2272                             .help = "Use gettimeofday(2) for timing",
2273                           },
2274 #endif
2275 #ifdef CONFIG_CLOCK_GETTIME
2276                           { .ival = "clock_gettime",
2277                             .oval = CS_CGETTIME,
2278                             .help = "Use clock_gettime(2) for timing",
2279                           },
2280 #endif
2281 #ifdef ARCH_HAVE_CPU_CLOCK
2282                           { .ival = "cpu",
2283                             .oval = CS_CPUCLOCK,
2284                             .help = "Use CPU private clock",
2285                           },
2286 #endif
2287                 },
2288         },
2289         {
2290                 .name   = "mem",
2291                 .alias  = "iomem",
2292                 .lname  = "I/O Memory",
2293                 .type   = FIO_OPT_STR,
2294                 .cb     = str_mem_cb,
2295                 .off1   = td_var_offset(mem_type),
2296                 .help   = "Backing type for IO buffers",
2297                 .def    = "malloc",
2298                 .category = FIO_OPT_C_IO,
2299                 .group  = FIO_OPT_G_INVALID,
2300                 .posval = {
2301                           { .ival = "malloc",
2302                             .oval = MEM_MALLOC,
2303                             .help = "Use malloc(3) for IO buffers",
2304                           },
2305 #ifndef CONFIG_NO_SHM
2306                           { .ival = "shm",
2307                             .oval = MEM_SHM,
2308                             .help = "Use shared memory segments for IO buffers",
2309                           },
2310 #ifdef FIO_HAVE_HUGETLB
2311                           { .ival = "shmhuge",
2312                             .oval = MEM_SHMHUGE,
2313                             .help = "Like shm, but use huge pages",
2314                           },
2315 #endif
2316 #endif
2317                           { .ival = "mmap",
2318                             .oval = MEM_MMAP,
2319                             .help = "Use mmap(2) (file or anon) for IO buffers",
2320                           },
2321 #ifdef FIO_HAVE_HUGETLB
2322                           { .ival = "mmaphuge",
2323                             .oval = MEM_MMAPHUGE,
2324                             .help = "Like mmap, but use huge pages",
2325                           },
2326 #endif
2327                   },
2328         },
2329         {
2330                 .name   = "iomem_align",
2331                 .alias  = "mem_align",
2332                 .lname  = "I/O memory alignment",
2333                 .type   = FIO_OPT_INT,
2334                 .off1   = td_var_offset(mem_align),
2335                 .minval = 0,
2336                 .help   = "IO memory buffer offset alignment",
2337                 .def    = "0",
2338                 .parent = "iomem",
2339                 .hide   = 1,
2340                 .category = FIO_OPT_C_IO,
2341                 .group  = FIO_OPT_G_INVALID,
2342         },
2343         {
2344                 .name   = "verify",
2345                 .lname  = "Verify",
2346                 .type   = FIO_OPT_STR,
2347                 .off1   = td_var_offset(verify),
2348                 .help   = "Verify data written",
2349                 .def    = "0",
2350                 .category = FIO_OPT_C_IO,
2351                 .group  = FIO_OPT_G_VERIFY,
2352                 .posval = {
2353                           { .ival = "0",
2354                             .oval = VERIFY_NONE,
2355                             .help = "Don't do IO verification",
2356                           },
2357                           { .ival = "md5",
2358                             .oval = VERIFY_MD5,
2359                             .help = "Use md5 checksums for verification",
2360                           },
2361                           { .ival = "crc64",
2362                             .oval = VERIFY_CRC64,
2363                             .help = "Use crc64 checksums for verification",
2364                           },
2365                           { .ival = "crc32",
2366                             .oval = VERIFY_CRC32,
2367                             .help = "Use crc32 checksums for verification",
2368                           },
2369                           { .ival = "crc32c-intel",
2370                             .oval = VERIFY_CRC32C,
2371                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2372                           },
2373                           { .ival = "crc32c",
2374                             .oval = VERIFY_CRC32C,
2375                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2376                           },
2377                           { .ival = "crc16",
2378                             .oval = VERIFY_CRC16,
2379                             .help = "Use crc16 checksums for verification",
2380                           },
2381                           { .ival = "crc7",
2382                             .oval = VERIFY_CRC7,
2383                             .help = "Use crc7 checksums for verification",
2384                           },
2385                           { .ival = "sha1",
2386                             .oval = VERIFY_SHA1,
2387                             .help = "Use sha1 checksums for verification",
2388                           },
2389                           { .ival = "sha256",
2390                             .oval = VERIFY_SHA256,
2391                             .help = "Use sha256 checksums for verification",
2392                           },
2393                           { .ival = "sha512",
2394                             .oval = VERIFY_SHA512,
2395                             .help = "Use sha512 checksums for verification",
2396                           },
2397                           { .ival = "xxhash",
2398                             .oval = VERIFY_XXHASH,
2399                             .help = "Use xxhash checksums for verification",
2400                           },
2401                           { .ival = "meta",
2402                             .oval = VERIFY_META,
2403                             .help = "Use io information",
2404                           },
2405                           { .ival = "pattern",
2406                             .oval = VERIFY_PATTERN_NO_HDR,
2407                             .help = "Verify strict pattern",
2408                           },
2409                           {
2410                             .ival = "null",
2411                             .oval = VERIFY_NULL,
2412                             .help = "Pretend to verify",
2413                           },
2414                 },
2415         },
2416         {
2417                 .name   = "do_verify",
2418                 .lname  = "Perform verify step",
2419                 .type   = FIO_OPT_BOOL,
2420                 .off1   = td_var_offset(do_verify),
2421                 .help   = "Run verification stage after write",
2422                 .def    = "1",
2423                 .parent = "verify",
2424                 .hide   = 1,
2425                 .category = FIO_OPT_C_IO,
2426                 .group  = FIO_OPT_G_VERIFY,
2427         },
2428         {
2429                 .name   = "verifysort",
2430                 .lname  = "Verify sort",
2431                 .type   = FIO_OPT_BOOL,
2432                 .off1   = td_var_offset(verifysort),
2433                 .help   = "Sort written verify blocks for read back",
2434                 .def    = "1",
2435                 .parent = "verify",
2436                 .hide   = 1,
2437                 .category = FIO_OPT_C_IO,
2438                 .group  = FIO_OPT_G_VERIFY,
2439         },
2440         {
2441                 .name   = "verifysort_nr",
2442                 .type   = FIO_OPT_INT,
2443                 .off1   = td_var_offset(verifysort_nr),
2444                 .help   = "Pre-load and sort verify blocks for a read workload",
2445                 .minval = 0,
2446                 .maxval = 131072,
2447                 .def    = "1024",
2448                 .parent = "verify",
2449                 .category = FIO_OPT_C_IO,
2450                 .group  = FIO_OPT_G_VERIFY,
2451         },
2452         {
2453                 .name   = "verify_interval",
2454                 .lname  = "Verify interval",
2455                 .type   = FIO_OPT_INT,
2456                 .off1   = td_var_offset(verify_interval),
2457                 .minval = 2 * sizeof(struct verify_header),
2458                 .help   = "Store verify buffer header every N bytes",
2459                 .parent = "verify",
2460                 .hide   = 1,
2461                 .interval = 2 * sizeof(struct verify_header),
2462                 .category = FIO_OPT_C_IO,
2463                 .group  = FIO_OPT_G_VERIFY,
2464         },
2465         {
2466                 .name   = "verify_offset",
2467                 .lname  = "Verify offset",
2468                 .type   = FIO_OPT_INT,
2469                 .help   = "Offset verify header location by N bytes",
2470                 .off1   = td_var_offset(verify_offset),
2471                 .minval = sizeof(struct verify_header),
2472                 .parent = "verify",
2473                 .hide   = 1,
2474                 .category = FIO_OPT_C_IO,
2475                 .group  = FIO_OPT_G_VERIFY,
2476         },
2477         {
2478                 .name   = "verify_pattern",
2479                 .lname  = "Verify pattern",
2480                 .type   = FIO_OPT_STR,
2481                 .cb     = str_verify_pattern_cb,
2482                 .off1   = td_var_offset(verify_pattern),
2483                 .help   = "Fill pattern for IO buffers",
2484                 .parent = "verify",
2485                 .hide   = 1,
2486                 .category = FIO_OPT_C_IO,
2487                 .group  = FIO_OPT_G_VERIFY,
2488         },
2489         {
2490                 .name   = "verify_fatal",
2491                 .lname  = "Verify fatal",
2492                 .type   = FIO_OPT_BOOL,
2493                 .off1   = td_var_offset(verify_fatal),
2494                 .def    = "0",
2495                 .help   = "Exit on a single verify failure, don't continue",
2496                 .parent = "verify",
2497                 .hide   = 1,
2498                 .category = FIO_OPT_C_IO,
2499                 .group  = FIO_OPT_G_VERIFY,
2500         },
2501         {
2502                 .name   = "verify_dump",
2503                 .lname  = "Verify dump",
2504                 .type   = FIO_OPT_BOOL,
2505                 .off1   = td_var_offset(verify_dump),
2506                 .def    = "0",
2507                 .help   = "Dump contents of good and bad blocks on failure",
2508                 .parent = "verify",
2509                 .hide   = 1,
2510                 .category = FIO_OPT_C_IO,
2511                 .group  = FIO_OPT_G_VERIFY,
2512         },
2513         {
2514                 .name   = "verify_async",
2515                 .lname  = "Verify asynchronously",
2516                 .type   = FIO_OPT_INT,
2517                 .off1   = td_var_offset(verify_async),
2518                 .def    = "0",
2519                 .help   = "Number of async verifier threads to use",
2520                 .parent = "verify",
2521                 .hide   = 1,
2522                 .category = FIO_OPT_C_IO,
2523                 .group  = FIO_OPT_G_VERIFY,
2524         },
2525         {
2526                 .name   = "verify_backlog",
2527                 .lname  = "Verify backlog",
2528                 .type   = FIO_OPT_STR_VAL,
2529                 .off1   = td_var_offset(verify_backlog),
2530                 .help   = "Verify after this number of blocks are written",
2531                 .parent = "verify",
2532                 .hide   = 1,
2533                 .category = FIO_OPT_C_IO,
2534                 .group  = FIO_OPT_G_VERIFY,
2535         },
2536         {
2537                 .name   = "verify_backlog_batch",
2538                 .lname  = "Verify backlog batch",
2539                 .type   = FIO_OPT_INT,
2540                 .off1   = td_var_offset(verify_batch),
2541                 .help   = "Verify this number of IO blocks",
2542                 .parent = "verify",
2543                 .hide   = 1,
2544                 .category = FIO_OPT_C_IO,
2545                 .group  = FIO_OPT_G_VERIFY,
2546         },
2547 #ifdef FIO_HAVE_CPU_AFFINITY
2548         {
2549                 .name   = "verify_async_cpus",
2550                 .lname  = "Async verify CPUs",
2551                 .type   = FIO_OPT_STR,
2552                 .cb     = str_verify_cpus_allowed_cb,
2553                 .off1   = td_var_offset(verify_cpumask),
2554                 .help   = "Set CPUs allowed for async verify threads",
2555                 .parent = "verify_async",
2556                 .hide   = 1,
2557                 .category = FIO_OPT_C_IO,
2558                 .group  = FIO_OPT_G_VERIFY,
2559         },
2560 #endif
2561         {
2562                 .name   = "experimental_verify",
2563                 .off1   = td_var_offset(experimental_verify),
2564                 .type   = FIO_OPT_BOOL,
2565                 .help   = "Enable experimental verification",
2566                 .parent = "verify",
2567                 .category = FIO_OPT_C_IO,
2568                 .group  = FIO_OPT_G_VERIFY,
2569         },
2570         {
2571                 .name   = "verify_state_load",
2572                 .lname  = "Load verify state",
2573                 .off1   = td_var_offset(verify_state),
2574                 .type   = FIO_OPT_BOOL,
2575                 .help   = "Load verify termination state",
2576                 .parent = "verify",
2577                 .category = FIO_OPT_C_IO,
2578                 .group  = FIO_OPT_G_VERIFY,
2579         },
2580         {
2581                 .name   = "verify_state_save",
2582                 .lname  = "Save verify state",
2583                 .off1   = td_var_offset(verify_state_save),
2584                 .type   = FIO_OPT_BOOL,
2585                 .def    = "1",
2586                 .help   = "Save verify state on termination",
2587                 .parent = "verify",
2588                 .category = FIO_OPT_C_IO,
2589                 .group  = FIO_OPT_G_VERIFY,
2590         },
2591 #ifdef FIO_HAVE_TRIM
2592         {
2593                 .name   = "trim_percentage",
2594                 .lname  = "Trim percentage",
2595                 .type   = FIO_OPT_INT,
2596                 .off1   = td_var_offset(trim_percentage),
2597                 .minval = 0,
2598                 .maxval = 100,
2599                 .help   = "Number of verify blocks to discard/trim",
2600                 .parent = "verify",
2601                 .def    = "0",
2602                 .interval = 1,
2603                 .hide   = 1,
2604                 .category = FIO_OPT_C_IO,
2605                 .group  = FIO_OPT_G_TRIM,
2606         },
2607         {
2608                 .name   = "trim_verify_zero",
2609                 .lname  = "Verify trim zero",
2610                 .type   = FIO_OPT_BOOL,
2611                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2612                 .off1   = td_var_offset(trim_zero),
2613                 .parent = "trim_percentage",
2614                 .hide   = 1,
2615                 .def    = "1",
2616                 .category = FIO_OPT_C_IO,
2617                 .group  = FIO_OPT_G_TRIM,
2618         },
2619         {
2620                 .name   = "trim_backlog",
2621                 .lname  = "Trim backlog",
2622                 .type   = FIO_OPT_STR_VAL,
2623                 .off1   = td_var_offset(trim_backlog),
2624                 .help   = "Trim after this number of blocks are written",
2625                 .parent = "trim_percentage",
2626                 .hide   = 1,
2627                 .interval = 1,
2628                 .category = FIO_OPT_C_IO,
2629                 .group  = FIO_OPT_G_TRIM,
2630         },
2631         {
2632                 .name   = "trim_backlog_batch",
2633                 .lname  = "Trim backlog batch",
2634                 .type   = FIO_OPT_INT,
2635                 .off1   = td_var_offset(trim_batch),
2636                 .help   = "Trim this number of IO blocks",
2637                 .parent = "trim_percentage",
2638                 .hide   = 1,
2639                 .interval = 1,
2640                 .category = FIO_OPT_C_IO,
2641                 .group  = FIO_OPT_G_TRIM,
2642         },
2643 #endif
2644         {
2645                 .name   = "write_iolog",
2646                 .lname  = "Write I/O log",
2647                 .type   = FIO_OPT_STR_STORE,
2648                 .off1   = td_var_offset(write_iolog_file),
2649                 .help   = "Store IO pattern to file",
2650                 .category = FIO_OPT_C_IO,
2651                 .group  = FIO_OPT_G_IOLOG,
2652         },
2653         {
2654                 .name   = "read_iolog",
2655                 .lname  = "Read I/O log",
2656                 .type   = FIO_OPT_STR_STORE,
2657                 .off1   = td_var_offset(read_iolog_file),
2658                 .help   = "Playback IO pattern from file",
2659                 .category = FIO_OPT_C_IO,
2660                 .group  = FIO_OPT_G_IOLOG,
2661         },
2662         {
2663                 .name   = "replay_no_stall",
2664                 .lname  = "Don't stall on replay",
2665                 .type   = FIO_OPT_BOOL,
2666                 .off1   = td_var_offset(no_stall),
2667                 .def    = "0",
2668                 .parent = "read_iolog",
2669                 .hide   = 1,
2670                 .help   = "Playback IO pattern file as fast as possible without stalls",
2671                 .category = FIO_OPT_C_IO,
2672                 .group  = FIO_OPT_G_IOLOG,
2673         },
2674         {
2675                 .name   = "replay_redirect",
2676                 .lname  = "Redirect device for replay",
2677                 .type   = FIO_OPT_STR_STORE,
2678                 .off1   = td_var_offset(replay_redirect),
2679                 .parent = "read_iolog",
2680                 .hide   = 1,
2681                 .help   = "Replay all I/O onto this device, regardless of trace device",
2682                 .category = FIO_OPT_C_IO,
2683                 .group  = FIO_OPT_G_IOLOG,
2684         },
2685         {
2686                 .name   = "replay_scale",
2687                 .lname  = "Replace offset scale factor",
2688                 .type   = FIO_OPT_INT,
2689                 .off1   = td_var_offset(replay_scale),
2690                 .parent = "read_iolog",
2691                 .def    = "1",
2692                 .help   = "Align offsets to this blocksize",
2693                 .category = FIO_OPT_C_IO,
2694                 .group  = FIO_OPT_G_IOLOG,
2695         },
2696         {
2697                 .name   = "replay_align",
2698                 .lname  = "Replace alignment",
2699                 .type   = FIO_OPT_INT,
2700                 .off1   = td_var_offset(replay_align),
2701                 .parent = "read_iolog",
2702                 .help   = "Scale offset down by this factor",
2703                 .category = FIO_OPT_C_IO,
2704                 .group  = FIO_OPT_G_IOLOG,
2705                 .pow2   = 1,
2706         },
2707         {
2708                 .name   = "exec_prerun",
2709                 .lname  = "Pre-execute runnable",
2710                 .type   = FIO_OPT_STR_STORE,
2711                 .off1   = td_var_offset(exec_prerun),
2712                 .help   = "Execute this file prior to running job",
2713                 .category = FIO_OPT_C_GENERAL,
2714                 .group  = FIO_OPT_G_INVALID,
2715         },
2716         {
2717                 .name   = "exec_postrun",
2718                 .lname  = "Post-execute runnable",
2719                 .type   = FIO_OPT_STR_STORE,
2720                 .off1   = td_var_offset(exec_postrun),
2721                 .help   = "Execute this file after running job",
2722                 .category = FIO_OPT_C_GENERAL,
2723                 .group  = FIO_OPT_G_INVALID,
2724         },
2725 #ifdef FIO_HAVE_IOSCHED_SWITCH
2726         {
2727                 .name   = "ioscheduler",
2728                 .lname  = "I/O scheduler",
2729                 .type   = FIO_OPT_STR_STORE,
2730                 .off1   = td_var_offset(ioscheduler),
2731                 .help   = "Use this IO scheduler on the backing device",
2732                 .category = FIO_OPT_C_FILE,
2733                 .group  = FIO_OPT_G_INVALID,
2734         },
2735 #endif
2736         {
2737                 .name   = "zonesize",
2738                 .lname  = "Zone size",
2739                 .type   = FIO_OPT_STR_VAL,
2740                 .off1   = td_var_offset(zone_size),
2741                 .help   = "Amount of data to read per zone",
2742                 .def    = "0",
2743                 .interval = 1024 * 1024,
2744                 .category = FIO_OPT_C_IO,
2745                 .group  = FIO_OPT_G_ZONE,
2746         },
2747         {
2748                 .name   = "zonerange",
2749                 .lname  = "Zone range",
2750                 .type   = FIO_OPT_STR_VAL,
2751                 .off1   = td_var_offset(zone_range),
2752                 .help   = "Give size of an IO zone",
2753                 .def    = "0",
2754                 .interval = 1024 * 1024,
2755                 .category = FIO_OPT_C_IO,
2756                 .group  = FIO_OPT_G_ZONE,
2757         },
2758         {
2759                 .name   = "zoneskip",
2760                 .lname  = "Zone skip",
2761                 .type   = FIO_OPT_STR_VAL,
2762                 .off1   = td_var_offset(zone_skip),
2763                 .help   = "Space between IO zones",
2764                 .def    = "0",
2765                 .interval = 1024 * 1024,
2766                 .category = FIO_OPT_C_IO,
2767                 .group  = FIO_OPT_G_ZONE,
2768         },
2769         {
2770                 .name   = "lockmem",
2771                 .lname  = "Lock memory",
2772                 .type   = FIO_OPT_STR_VAL,
2773                 .off1   = td_var_offset(lockmem),
2774                 .help   = "Lock down this amount of memory (per worker)",
2775                 .def    = "0",
2776                 .interval = 1024 * 1024,
2777                 .category = FIO_OPT_C_GENERAL,
2778                 .group  = FIO_OPT_G_INVALID,
2779         },
2780         {
2781                 .name   = "rwmixread",
2782                 .lname  = "Read/write mix read",
2783                 .type   = FIO_OPT_INT,
2784                 .cb     = str_rwmix_read_cb,
2785                 .off1   = td_var_offset(rwmix[DDIR_READ]),
2786                 .maxval = 100,
2787                 .help   = "Percentage of mixed workload that is reads",
2788                 .def    = "50",
2789                 .interval = 5,
2790                 .inverse = "rwmixwrite",
2791                 .category = FIO_OPT_C_IO,
2792                 .group  = FIO_OPT_G_RWMIX,
2793         },
2794         {
2795                 .name   = "rwmixwrite",
2796                 .lname  = "Read/write mix write",
2797                 .type   = FIO_OPT_INT,
2798                 .cb     = str_rwmix_write_cb,
2799                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
2800                 .maxval = 100,
2801                 .help   = "Percentage of mixed workload that is writes",
2802                 .def    = "50",
2803                 .interval = 5,
2804                 .inverse = "rwmixread",
2805                 .category = FIO_OPT_C_IO,
2806                 .group  = FIO_OPT_G_RWMIX,
2807         },
2808         {
2809                 .name   = "rwmixcycle",
2810                 .lname  = "Read/write mix cycle",
2811                 .type   = FIO_OPT_DEPRECATED,
2812                 .category = FIO_OPT_C_IO,
2813                 .group  = FIO_OPT_G_RWMIX,
2814         },
2815         {
2816                 .name   = "nice",
2817                 .lname  = "Nice",
2818                 .type   = FIO_OPT_INT,
2819                 .off1   = td_var_offset(nice),
2820                 .help   = "Set job CPU nice value",
2821                 .minval = -19,
2822                 .maxval = 20,
2823                 .def    = "0",
2824                 .interval = 1,
2825                 .category = FIO_OPT_C_GENERAL,
2826                 .group  = FIO_OPT_G_CRED,
2827         },
2828 #ifdef FIO_HAVE_IOPRIO
2829         {
2830                 .name   = "prio",
2831                 .lname  = "I/O nice priority",
2832                 .type   = FIO_OPT_INT,
2833                 .off1   = td_var_offset(ioprio),
2834                 .help   = "Set job IO priority value",
2835                 .minval = 0,
2836                 .maxval = 7,
2837                 .interval = 1,
2838                 .category = FIO_OPT_C_GENERAL,
2839                 .group  = FIO_OPT_G_CRED,
2840         },
2841         {
2842                 .name   = "prioclass",
2843                 .lname  = "I/O nice priority class",
2844                 .type   = FIO_OPT_INT,
2845                 .off1   = td_var_offset(ioprio_class),
2846                 .help   = "Set job IO priority class",
2847                 .minval = 0,
2848                 .maxval = 3,
2849                 .interval = 1,
2850                 .category = FIO_OPT_C_GENERAL,
2851                 .group  = FIO_OPT_G_CRED,
2852         },
2853 #endif
2854         {
2855                 .name   = "thinktime",
2856                 .lname  = "Thinktime",
2857                 .type   = FIO_OPT_INT,
2858                 .off1   = td_var_offset(thinktime),
2859                 .help   = "Idle time between IO buffers (usec)",
2860                 .def    = "0",
2861                 .is_time = 1,
2862                 .category = FIO_OPT_C_IO,
2863                 .group  = FIO_OPT_G_THINKTIME,
2864         },
2865         {
2866                 .name   = "thinktime_spin",
2867                 .lname  = "Thinktime spin",
2868                 .type   = FIO_OPT_INT,
2869                 .off1   = td_var_offset(thinktime_spin),
2870                 .help   = "Start think time by spinning this amount (usec)",
2871                 .def    = "0",
2872                 .is_time = 1,
2873                 .parent = "thinktime",
2874                 .hide   = 1,
2875                 .category = FIO_OPT_C_IO,
2876                 .group  = FIO_OPT_G_THINKTIME,
2877         },
2878         {
2879                 .name   = "thinktime_blocks",
2880                 .lname  = "Thinktime blocks",
2881                 .type   = FIO_OPT_INT,
2882                 .off1   = td_var_offset(thinktime_blocks),
2883                 .help   = "IO buffer period between 'thinktime'",
2884                 .def    = "1",
2885                 .parent = "thinktime",
2886                 .hide   = 1,
2887                 .category = FIO_OPT_C_IO,
2888                 .group  = FIO_OPT_G_THINKTIME,
2889         },
2890         {
2891                 .name   = "rate",
2892                 .lname  = "I/O rate",
2893                 .type   = FIO_OPT_INT,
2894                 .off1   = td_var_offset(rate[DDIR_READ]),
2895                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2896                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2897                 .help   = "Set bandwidth rate",
2898                 .category = FIO_OPT_C_IO,
2899                 .group  = FIO_OPT_G_RATE,
2900         },
2901         {
2902                 .name   = "ratemin",
2903                 .lname  = "I/O min rate",
2904                 .type   = FIO_OPT_INT,
2905                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2906                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2907                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2908                 .help   = "Job must meet this rate or it will be shutdown",
2909                 .parent = "rate",
2910                 .hide   = 1,
2911                 .category = FIO_OPT_C_IO,
2912                 .group  = FIO_OPT_G_RATE,
2913         },
2914         {
2915                 .name   = "rate_iops",
2916                 .lname  = "I/O rate IOPS",
2917                 .type   = FIO_OPT_INT,
2918                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2919                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2920                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2921                 .help   = "Limit IO used to this number of IO operations/sec",
2922                 .hide   = 1,
2923                 .category = FIO_OPT_C_IO,
2924                 .group  = FIO_OPT_G_RATE,
2925         },
2926         {
2927                 .name   = "rate_iops_min",
2928                 .lname  = "I/O min rate IOPS",
2929                 .type   = FIO_OPT_INT,
2930                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2931                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2932                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2933                 .help   = "Job must meet this rate or it will be shut down",
2934                 .parent = "rate_iops",
2935                 .hide   = 1,
2936                 .category = FIO_OPT_C_IO,
2937                 .group  = FIO_OPT_G_RATE,
2938         },
2939         {
2940                 .name   = "ratecycle",
2941                 .lname  = "I/O rate cycle",
2942                 .type   = FIO_OPT_INT,
2943                 .off1   = td_var_offset(ratecycle),
2944                 .help   = "Window average for rate limits (msec)",
2945                 .def    = "1000",
2946                 .parent = "rate",
2947                 .hide   = 1,
2948                 .category = FIO_OPT_C_IO,
2949                 .group  = FIO_OPT_G_RATE,
2950         },
2951         {
2952                 .name   = "max_latency",
2953                 .type   = FIO_OPT_INT,
2954                 .off1   = td_var_offset(max_latency),
2955                 .help   = "Maximum tolerated IO latency (usec)",
2956                 .is_time = 1,
2957                 .category = FIO_OPT_C_IO,
2958                 .group = FIO_OPT_G_LATPROF,
2959         },
2960         {
2961                 .name   = "latency_target",
2962                 .lname  = "Latency Target (usec)",
2963                 .type   = FIO_OPT_STR_VAL_TIME,
2964                 .off1   = td_var_offset(latency_target),
2965                 .help   = "Ramp to max queue depth supporting this latency",
2966                 .is_time = 1,
2967                 .category = FIO_OPT_C_IO,
2968                 .group  = FIO_OPT_G_LATPROF,
2969         },
2970         {
2971                 .name   = "latency_window",
2972                 .lname  = "Latency Window (usec)",
2973                 .type   = FIO_OPT_STR_VAL_TIME,
2974                 .off1   = td_var_offset(latency_window),
2975                 .help   = "Time to sustain latency_target",
2976                 .is_time = 1,
2977                 .category = FIO_OPT_C_IO,
2978                 .group  = FIO_OPT_G_LATPROF,
2979         },
2980         {
2981                 .name   = "latency_percentile",
2982                 .lname  = "Latency Percentile",
2983                 .type   = FIO_OPT_FLOAT_LIST,
2984                 .off1   = td_var_offset(latency_percentile),
2985                 .help   = "Percentile of IOs must be below latency_target",
2986                 .def    = "100",
2987                 .maxlen = 1,
2988                 .minfp  = 0.0,
2989                 .maxfp  = 100.0,
2990                 .category = FIO_OPT_C_IO,
2991                 .group  = FIO_OPT_G_LATPROF,
2992         },
2993         {
2994                 .name   = "invalidate",
2995                 .lname  = "Cache invalidate",
2996                 .type   = FIO_OPT_BOOL,
2997                 .off1   = td_var_offset(invalidate_cache),
2998                 .help   = "Invalidate buffer/page cache prior to running job",
2999                 .def    = "1",
3000                 .category = FIO_OPT_C_IO,
3001                 .group  = FIO_OPT_G_IO_TYPE,
3002         },
3003         {
3004                 .name   = "sync",
3005                 .lname  = "Synchronous I/O",
3006                 .type   = FIO_OPT_BOOL,
3007                 .off1   = td_var_offset(sync_io),
3008                 .help   = "Use O_SYNC for buffered writes",
3009                 .def    = "0",
3010                 .parent = "buffered",
3011                 .hide   = 1,
3012                 .category = FIO_OPT_C_IO,
3013                 .group  = FIO_OPT_G_IO_TYPE,
3014         },
3015         {
3016                 .name   = "create_serialize",
3017                 .lname  = "Create serialize",
3018                 .type   = FIO_OPT_BOOL,
3019                 .off1   = td_var_offset(create_serialize),
3020                 .help   = "Serialize creating of job files",
3021                 .def    = "1",
3022                 .category = FIO_OPT_C_FILE,
3023                 .group  = FIO_OPT_G_INVALID,
3024         },
3025         {
3026                 .name   = "create_fsync",
3027                 .lname  = "Create fsync",
3028                 .type   = FIO_OPT_BOOL,
3029                 .off1   = td_var_offset(create_fsync),
3030                 .help   = "fsync file after creation",
3031                 .def    = "1",
3032                 .category = FIO_OPT_C_FILE,
3033                 .group  = FIO_OPT_G_INVALID,
3034         },
3035         {
3036                 .name   = "create_on_open",
3037                 .lname  = "Create on open",
3038                 .type   = FIO_OPT_BOOL,
3039                 .off1   = td_var_offset(create_on_open),
3040                 .help   = "Create files when they are opened for IO",
3041                 .def    = "0",
3042                 .category = FIO_OPT_C_FILE,
3043                 .group  = FIO_OPT_G_INVALID,
3044         },
3045         {
3046                 .name   = "create_only",
3047                 .type   = FIO_OPT_BOOL,
3048                 .off1   = td_var_offset(create_only),
3049                 .help   = "Only perform file creation phase",
3050                 .category = FIO_OPT_C_FILE,
3051                 .def    = "0",
3052         },
3053         {
3054                 .name   = "allow_file_create",
3055                 .lname  = "Allow file create",
3056                 .type   = FIO_OPT_BOOL,
3057                 .off1   = td_var_offset(allow_create),
3058                 .help   = "Permit fio to create files, if they don't exist",
3059                 .def    = "1",
3060                 .category = FIO_OPT_C_FILE,
3061                 .group  = FIO_OPT_G_FILENAME,
3062         },
3063         {
3064                 .name   = "allow_mounted_write",
3065                 .lname  = "Allow mounted write",
3066                 .type   = FIO_OPT_BOOL,
3067                 .off1   = td_var_offset(allow_mounted_write),
3068                 .help   = "Allow writes to a mounted partition",
3069                 .def    = "0",
3070                 .category = FIO_OPT_C_FILE,
3071                 .group  = FIO_OPT_G_FILENAME,
3072         },
3073         {
3074                 .name   = "pre_read",
3075                 .lname  = "Pre-read files",
3076                 .type   = FIO_OPT_BOOL,
3077                 .off1   = td_var_offset(pre_read),
3078                 .help   = "Pre-read files before starting official testing",
3079                 .def    = "0",
3080                 .category = FIO_OPT_C_FILE,
3081                 .group  = FIO_OPT_G_INVALID,
3082         },
3083 #ifdef FIO_HAVE_CPU_AFFINITY
3084         {
3085                 .name   = "cpumask",
3086                 .lname  = "CPU mask",
3087                 .type   = FIO_OPT_INT,
3088                 .cb     = str_cpumask_cb,
3089                 .off1   = td_var_offset(cpumask),
3090                 .help   = "CPU affinity mask",
3091                 .category = FIO_OPT_C_GENERAL,
3092                 .group  = FIO_OPT_G_CRED,
3093         },
3094         {
3095                 .name   = "cpus_allowed",
3096                 .lname  = "CPUs allowed",
3097                 .type   = FIO_OPT_STR,
3098                 .cb     = str_cpus_allowed_cb,
3099                 .off1   = td_var_offset(cpumask),
3100                 .help   = "Set CPUs allowed",
3101                 .category = FIO_OPT_C_GENERAL,
3102                 .group  = FIO_OPT_G_CRED,
3103         },
3104         {
3105                 .name   = "cpus_allowed_policy",
3106                 .lname  = "CPUs allowed distribution policy",
3107                 .type   = FIO_OPT_STR,
3108                 .off1   = td_var_offset(cpus_allowed_policy),
3109                 .help   = "Distribution policy for cpus_allowed",
3110                 .parent = "cpus_allowed",
3111                 .prio   = 1,
3112                 .posval = {
3113                           { .ival = "shared",
3114                             .oval = FIO_CPUS_SHARED,
3115                             .help = "Mask shared between threads",
3116                           },
3117                           { .ival = "split",
3118                             .oval = FIO_CPUS_SPLIT,
3119                             .help = "Mask split between threads",
3120                           },
3121                 },
3122                 .category = FIO_OPT_C_GENERAL,
3123                 .group  = FIO_OPT_G_CRED,
3124         },
3125 #endif
3126 #ifdef CONFIG_LIBNUMA
3127         {
3128                 .name   = "numa_cpu_nodes",
3129                 .type   = FIO_OPT_STR,
3130                 .cb     = str_numa_cpunodes_cb,
3131                 .off1   = td_var_offset(numa_cpunodes),
3132                 .help   = "NUMA CPU nodes bind",
3133                 .category = FIO_OPT_C_GENERAL,
3134                 .group  = FIO_OPT_G_INVALID,
3135         },
3136         {
3137                 .name   = "numa_mem_policy",
3138                 .type   = FIO_OPT_STR,
3139                 .cb     = str_numa_mpol_cb,
3140                 .off1   = td_var_offset(numa_memnodes),
3141                 .help   = "NUMA memory policy setup",
3142                 .category = FIO_OPT_C_GENERAL,
3143                 .group  = FIO_OPT_G_INVALID,
3144         },
3145 #endif
3146         {
3147                 .name   = "end_fsync",
3148                 .lname  = "End fsync",
3149                 .type   = FIO_OPT_BOOL,
3150                 .off1   = td_var_offset(end_fsync),
3151                 .help   = "Include fsync at the end of job",
3152                 .def    = "0",
3153                 .category = FIO_OPT_C_FILE,
3154                 .group  = FIO_OPT_G_INVALID,
3155         },
3156         {
3157                 .name   = "fsync_on_close",
3158                 .lname  = "Fsync on close",
3159                 .type   = FIO_OPT_BOOL,
3160                 .off1   = td_var_offset(fsync_on_close),
3161                 .help   = "fsync files on close",
3162                 .def    = "0",
3163                 .category = FIO_OPT_C_FILE,
3164                 .group  = FIO_OPT_G_INVALID,
3165         },
3166         {
3167                 .name   = "unlink",
3168                 .lname  = "Unlink file",
3169                 .type   = FIO_OPT_BOOL,
3170                 .off1   = td_var_offset(unlink),
3171                 .help   = "Unlink created files after job has completed",
3172                 .def    = "0",
3173                 .category = FIO_OPT_C_FILE,
3174                 .group  = FIO_OPT_G_INVALID,
3175         },
3176         {
3177                 .name   = "exitall",
3178                 .lname  = "Exit-all on terminate",
3179                 .type   = FIO_OPT_STR_SET,
3180                 .cb     = str_exitall_cb,
3181                 .help   = "Terminate all jobs when one exits",
3182                 .category = FIO_OPT_C_GENERAL,
3183                 .group  = FIO_OPT_G_PROCESS,
3184         },
3185         {
3186                 .name   = "stonewall",
3187                 .lname  = "Wait for previous",
3188                 .alias  = "wait_for_previous",
3189                 .type   = FIO_OPT_STR_SET,
3190                 .off1   = td_var_offset(stonewall),
3191                 .help   = "Insert a hard barrier between this job and previous",
3192                 .category = FIO_OPT_C_GENERAL,
3193                 .group  = FIO_OPT_G_PROCESS,
3194         },
3195         {
3196                 .name   = "new_group",
3197                 .lname  = "New group",
3198                 .type   = FIO_OPT_STR_SET,
3199                 .off1   = td_var_offset(new_group),
3200                 .help   = "Mark the start of a new group (for reporting)",
3201                 .category = FIO_OPT_C_GENERAL,
3202                 .group  = FIO_OPT_G_PROCESS,
3203         },
3204         {
3205                 .name   = "thread",
3206                 .lname  = "Thread",
3207                 .type   = FIO_OPT_STR_SET,
3208                 .off1   = td_var_offset(use_thread),
3209                 .help   = "Use threads instead of processes",
3210 #ifdef CONFIG_NO_SHM
3211                 .def    = "1",
3212                 .no_warn_def = 1,
3213 #endif
3214                 .category = FIO_OPT_C_GENERAL,
3215                 .group  = FIO_OPT_G_PROCESS,
3216         },
3217         {
3218                 .name   = "per_job_logs",
3219                 .type   = FIO_OPT_BOOL,
3220                 .off1   = td_var_offset(per_job_logs),
3221                 .help   = "Include job number in generated log files or not",
3222                 .def    = "1",
3223                 .category = FIO_OPT_C_LOG,
3224                 .group  = FIO_OPT_G_INVALID,
3225         },
3226         {
3227                 .name   = "write_bw_log",
3228                 .lname  = "Write bandwidth log",
3229                 .type   = FIO_OPT_STR_STORE,
3230                 .off1   = td_var_offset(bw_log_file),
3231                 .help   = "Write log of bandwidth during run",
3232                 .category = FIO_OPT_C_LOG,
3233                 .group  = FIO_OPT_G_INVALID,
3234         },
3235         {
3236                 .name   = "write_lat_log",
3237                 .lname  = "Write latency log",
3238                 .type   = FIO_OPT_STR_STORE,
3239                 .off1   = td_var_offset(lat_log_file),
3240                 .help   = "Write log of latency during run",
3241                 .category = FIO_OPT_C_LOG,
3242                 .group  = FIO_OPT_G_INVALID,
3243         },
3244         {
3245                 .name   = "write_iops_log",
3246                 .lname  = "Write IOPS log",
3247                 .type   = FIO_OPT_STR_STORE,
3248                 .off1   = td_var_offset(iops_log_file),
3249                 .help   = "Write log of IOPS during run",
3250                 .category = FIO_OPT_C_LOG,
3251                 .group  = FIO_OPT_G_INVALID,
3252         },
3253         {
3254                 .name   = "log_avg_msec",
3255                 .lname  = "Log averaging (msec)",
3256                 .type   = FIO_OPT_INT,
3257                 .off1   = td_var_offset(log_avg_msec),
3258                 .help   = "Average bw/iops/lat logs over this period of time",
3259                 .def    = "0",
3260                 .category = FIO_OPT_C_LOG,
3261                 .group  = FIO_OPT_G_INVALID,
3262         },
3263         {
3264                 .name   = "log_offset",
3265                 .lname  = "Log offset of IO",
3266                 .type   = FIO_OPT_BOOL,
3267                 .off1   = td_var_offset(log_offset),
3268                 .help   = "Include offset of IO for each log entry",
3269                 .def    = "0",
3270                 .category = FIO_OPT_C_LOG,
3271                 .group  = FIO_OPT_G_INVALID,
3272         },
3273 #ifdef CONFIG_ZLIB
3274         {
3275                 .name   = "log_compression",
3276                 .lname  = "Log compression",
3277                 .type   = FIO_OPT_INT,
3278                 .off1   = td_var_offset(log_gz),
3279                 .help   = "Log in compressed chunks of this size",
3280                 .minval = 32 * 1024 * 1024ULL,
3281                 .maxval = 512 * 1024 * 1024ULL,
3282                 .category = FIO_OPT_C_LOG,
3283                 .group  = FIO_OPT_G_INVALID,
3284         },
3285         {
3286                 .name   = "log_store_compressed",
3287                 .lname  = "Log store compressed",
3288                 .type   = FIO_OPT_BOOL,
3289                 .off1   = td_var_offset(log_gz_store),
3290                 .help   = "Store logs in a compressed format",
3291                 .category = FIO_OPT_C_LOG,
3292                 .group  = FIO_OPT_G_INVALID,
3293         },
3294 #endif
3295         {
3296                 .name   = "block_error_percentiles",
3297                 .lname  = "Block error percentiles",
3298                 .type   = FIO_OPT_BOOL,
3299                 .off1   = td_var_offset(block_error_hist),
3300                 .help   = "Record trim block errors and make a histogram",
3301                 .def    = "0",
3302                 .category = FIO_OPT_C_LOG,
3303                 .group  = FIO_OPT_G_INVALID,
3304         },
3305         {
3306                 .name   = "bwavgtime",
3307                 .lname  = "Bandwidth average time",
3308                 .type   = FIO_OPT_INT,
3309                 .off1   = td_var_offset(bw_avg_time),
3310                 .help   = "Time window over which to calculate bandwidth"
3311                           " (msec)",
3312                 .def    = "500",
3313                 .parent = "write_bw_log",
3314                 .hide   = 1,
3315                 .interval = 100,
3316                 .category = FIO_OPT_C_LOG,
3317                 .group  = FIO_OPT_G_INVALID,
3318         },
3319         {
3320                 .name   = "iopsavgtime",
3321                 .lname  = "IOPS average time",
3322                 .type   = FIO_OPT_INT,
3323                 .off1   = td_var_offset(iops_avg_time),
3324                 .help   = "Time window over which to calculate IOPS (msec)",
3325                 .def    = "500",
3326                 .parent = "write_iops_log",
3327                 .hide   = 1,
3328                 .interval = 100,
3329                 .category = FIO_OPT_C_LOG,
3330                 .group  = FIO_OPT_G_INVALID,
3331         },
3332         {
3333                 .name   = "group_reporting",
3334                 .lname  = "Group reporting",
3335                 .type   = FIO_OPT_STR_SET,
3336                 .off1   = td_var_offset(group_reporting),
3337                 .help   = "Do reporting on a per-group basis",
3338                 .category = FIO_OPT_C_STAT,
3339                 .group  = FIO_OPT_G_INVALID,
3340         },
3341         {
3342                 .name   = "zero_buffers",
3343                 .lname  = "Zero I/O buffers",
3344                 .type   = FIO_OPT_STR_SET,
3345                 .off1   = td_var_offset(zero_buffers),
3346                 .help   = "Init IO buffers to all zeroes",
3347                 .category = FIO_OPT_C_IO,
3348                 .group  = FIO_OPT_G_IO_BUF,
3349         },
3350         {
3351                 .name   = "refill_buffers",
3352                 .lname  = "Refill I/O buffers",
3353                 .type   = FIO_OPT_STR_SET,
3354                 .off1   = td_var_offset(refill_buffers),
3355                 .help   = "Refill IO buffers on every IO submit",
3356                 .category = FIO_OPT_C_IO,
3357                 .group  = FIO_OPT_G_IO_BUF,
3358         },
3359         {
3360                 .name   = "scramble_buffers",
3361                 .lname  = "Scramble I/O buffers",
3362                 .type   = FIO_OPT_BOOL,
3363                 .off1   = td_var_offset(scramble_buffers),
3364                 .help   = "Slightly scramble buffers on every IO submit",
3365                 .def    = "1",
3366                 .category = FIO_OPT_C_IO,
3367                 .group  = FIO_OPT_G_IO_BUF,
3368         },
3369         {
3370                 .name   = "buffer_pattern",
3371                 .lname  = "Buffer pattern",
3372                 .type   = FIO_OPT_STR,
3373                 .cb     = str_buffer_pattern_cb,
3374                 .off1   = td_var_offset(buffer_pattern),
3375                 .help   = "Fill pattern for IO buffers",
3376                 .category = FIO_OPT_C_IO,
3377                 .group  = FIO_OPT_G_IO_BUF,
3378         },
3379         {
3380                 .name   = "buffer_compress_percentage",
3381                 .lname  = "Buffer compression percentage",
3382                 .type   = FIO_OPT_INT,
3383                 .cb     = str_buffer_compress_cb,
3384                 .off1   = td_var_offset(compress_percentage),
3385                 .maxval = 100,
3386                 .minval = 0,
3387                 .help   = "How compressible the buffer is (approximately)",
3388                 .interval = 5,
3389                 .category = FIO_OPT_C_IO,
3390                 .group  = FIO_OPT_G_IO_BUF,
3391         },
3392         {
3393                 .name   = "buffer_compress_chunk",
3394                 .lname  = "Buffer compression chunk size",
3395                 .type   = FIO_OPT_INT,
3396                 .off1   = td_var_offset(compress_chunk),
3397                 .parent = "buffer_compress_percentage",
3398                 .hide   = 1,
3399                 .help   = "Size of compressible region in buffer",
3400                 .interval = 256,
3401                 .category = FIO_OPT_C_IO,
3402                 .group  = FIO_OPT_G_IO_BUF,
3403         },
3404         {
3405                 .name   = "dedupe_percentage",
3406                 .lname  = "Dedupe percentage",
3407                 .type   = FIO_OPT_INT,
3408                 .cb     = str_dedupe_cb,
3409                 .off1   = td_var_offset(dedupe_percentage),
3410                 .maxval = 100,
3411                 .minval = 0,
3412                 .help   = "Percentage of buffers that are dedupable",
3413                 .interval = 1,
3414                 .category = FIO_OPT_C_IO,
3415                 .group  = FIO_OPT_G_IO_BUF,
3416         },
3417         {
3418                 .name   = "clat_percentiles",
3419                 .lname  = "Completion latency percentiles",
3420                 .type   = FIO_OPT_BOOL,
3421                 .off1   = td_var_offset(clat_percentiles),
3422                 .help   = "Enable the reporting of completion latency percentiles",
3423                 .def    = "1",
3424                 .category = FIO_OPT_C_STAT,
3425                 .group  = FIO_OPT_G_INVALID,
3426         },
3427         {
3428                 .name   = "percentile_list",
3429                 .lname  = "Percentile list",
3430                 .type   = FIO_OPT_FLOAT_LIST,
3431                 .off1   = td_var_offset(percentile_list),
3432                 .off2   = td_var_offset(percentile_precision),
3433                 .help   = "Specify a custom list of percentiles to report for "
3434                           "completion latency and block errors",
3435                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3436                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3437                 .minfp  = 0.0,
3438                 .maxfp  = 100.0,
3439                 .category = FIO_OPT_C_STAT,
3440                 .group  = FIO_OPT_G_INVALID,
3441         },
3442
3443 #ifdef FIO_HAVE_DISK_UTIL
3444         {
3445                 .name   = "disk_util",
3446                 .lname  = "Disk utilization",
3447                 .type   = FIO_OPT_BOOL,
3448                 .off1   = td_var_offset(do_disk_util),
3449                 .help   = "Log disk utilization statistics",
3450                 .def    = "1",
3451                 .category = FIO_OPT_C_STAT,
3452                 .group  = FIO_OPT_G_INVALID,
3453         },
3454 #endif
3455         {
3456                 .name   = "gtod_reduce",
3457                 .lname  = "Reduce gettimeofday() calls",
3458                 .type   = FIO_OPT_BOOL,
3459                 .help   = "Greatly reduce number of gettimeofday() calls",
3460                 .cb     = str_gtod_reduce_cb,
3461                 .def    = "0",
3462                 .hide_on_set = 1,
3463                 .category = FIO_OPT_C_STAT,
3464                 .group  = FIO_OPT_G_INVALID,
3465         },
3466         {
3467                 .name   = "disable_lat",
3468                 .lname  = "Disable all latency stats",
3469                 .type   = FIO_OPT_BOOL,
3470                 .off1   = td_var_offset(disable_lat),
3471                 .help   = "Disable latency numbers",
3472                 .parent = "gtod_reduce",
3473                 .hide   = 1,
3474                 .def    = "0",
3475                 .category = FIO_OPT_C_STAT,
3476                 .group  = FIO_OPT_G_INVALID,
3477         },
3478         {
3479                 .name   = "disable_clat",
3480                 .lname  = "Disable completion latency stats",
3481                 .type   = FIO_OPT_BOOL,
3482                 .off1   = td_var_offset(disable_clat),
3483                 .help   = "Disable completion latency numbers",
3484                 .parent = "gtod_reduce",
3485                 .hide   = 1,
3486                 .def    = "0",
3487                 .category = FIO_OPT_C_STAT,
3488                 .group  = FIO_OPT_G_INVALID,
3489         },
3490         {
3491                 .name   = "disable_slat",
3492                 .lname  = "Disable submission latency stats",
3493                 .type   = FIO_OPT_BOOL,
3494                 .off1   = td_var_offset(disable_slat),
3495                 .help   = "Disable submission latency numbers",
3496                 .parent = "gtod_reduce",
3497                 .hide   = 1,
3498                 .def    = "0",
3499                 .category = FIO_OPT_C_STAT,
3500                 .group  = FIO_OPT_G_INVALID,
3501         },
3502         {
3503                 .name   = "disable_bw_measurement",
3504                 .lname  = "Disable bandwidth stats",
3505                 .type   = FIO_OPT_BOOL,
3506                 .off1   = td_var_offset(disable_bw),
3507                 .help   = "Disable bandwidth logging",
3508                 .parent = "gtod_reduce",
3509                 .hide   = 1,
3510                 .def    = "0",
3511                 .category = FIO_OPT_C_STAT,
3512                 .group  = FIO_OPT_G_INVALID,
3513         },
3514         {
3515                 .name   = "gtod_cpu",
3516                 .lname  = "Dedicated gettimeofday() CPU",
3517                 .type   = FIO_OPT_INT,
3518                 .off1   = td_var_offset(gtod_cpu),
3519                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3520                 .verify = gtod_cpu_verify,
3521                 .category = FIO_OPT_C_GENERAL,
3522                 .group  = FIO_OPT_G_CLOCK,
3523         },
3524         {
3525                 .name   = "unified_rw_reporting",
3526                 .type   = FIO_OPT_BOOL,
3527                 .off1   = td_var_offset(unified_rw_rep),
3528                 .help   = "Unify reporting across data direction",
3529                 .def    = "0",
3530                 .category = FIO_OPT_C_GENERAL,
3531                 .group  = FIO_OPT_G_INVALID,
3532         },
3533         {
3534                 .name   = "continue_on_error",
3535                 .lname  = "Continue on error",
3536                 .type   = FIO_OPT_STR,
3537                 .off1   = td_var_offset(continue_on_error),
3538                 .help   = "Continue on non-fatal errors during IO",
3539                 .def    = "none",
3540                 .category = FIO_OPT_C_GENERAL,
3541                 .group  = FIO_OPT_G_ERR,
3542                 .posval = {
3543                           { .ival = "none",
3544                             .oval = ERROR_TYPE_NONE,
3545                             .help = "Exit when an error is encountered",
3546                           },
3547                           { .ival = "read",
3548                             .oval = ERROR_TYPE_READ,
3549                             .help = "Continue on read errors only",
3550                           },
3551                           { .ival = "write",
3552                             .oval = ERROR_TYPE_WRITE,
3553                             .help = "Continue on write errors only",
3554                           },
3555                           { .ival = "io",
3556                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3557                             .help = "Continue on any IO errors",
3558                           },
3559                           { .ival = "verify",
3560                             .oval = ERROR_TYPE_VERIFY,
3561                             .help = "Continue on verify errors only",
3562                           },
3563                           { .ival = "all",
3564                             .oval = ERROR_TYPE_ANY,
3565                             .help = "Continue on all io and verify errors",
3566                           },
3567                           { .ival = "0",
3568                             .oval = ERROR_TYPE_NONE,
3569                             .help = "Alias for 'none'",
3570                           },
3571                           { .ival = "1",
3572                             .oval = ERROR_TYPE_ANY,
3573                             .help = "Alias for 'all'",
3574                           },
3575                 },
3576         },
3577         {
3578                 .name   = "ignore_error",
3579                 .type   = FIO_OPT_STR,
3580                 .cb     = str_ignore_error_cb,
3581                 .off1   = td_var_offset(ignore_error_nr),
3582                 .help   = "Set a specific list of errors to ignore",
3583                 .parent = "rw",
3584                 .category = FIO_OPT_C_GENERAL,
3585                 .group  = FIO_OPT_G_ERR,
3586         },
3587         {
3588                 .name   = "error_dump",
3589                 .type   = FIO_OPT_BOOL,
3590                 .off1   = td_var_offset(error_dump),
3591                 .def    = "0",
3592                 .help   = "Dump info on each error",
3593                 .category = FIO_OPT_C_GENERAL,
3594                 .group  = FIO_OPT_G_ERR,
3595         },
3596         {
3597                 .name   = "profile",
3598                 .lname  = "Profile",
3599                 .type   = FIO_OPT_STR_STORE,
3600                 .off1   = td_var_offset(profile),
3601                 .help   = "Select a specific builtin performance test",
3602                 .category = FIO_OPT_C_PROFILE,
3603                 .group  = FIO_OPT_G_INVALID,
3604         },
3605         {
3606                 .name   = "cgroup",
3607                 .lname  = "Cgroup",
3608                 .type   = FIO_OPT_STR_STORE,
3609                 .off1   = td_var_offset(cgroup),
3610                 .help   = "Add job to cgroup of this name",
3611                 .category = FIO_OPT_C_GENERAL,
3612                 .group  = FIO_OPT_G_CGROUP,
3613         },
3614         {
3615                 .name   = "cgroup_nodelete",
3616                 .lname  = "Cgroup no-delete",
3617                 .type   = FIO_OPT_BOOL,
3618                 .off1   = td_var_offset(cgroup_nodelete),
3619                 .help   = "Do not delete cgroups after job completion",
3620                 .def    = "0",
3621                 .parent = "cgroup",
3622                 .category = FIO_OPT_C_GENERAL,
3623                 .group  = FIO_OPT_G_CGROUP,
3624         },
3625         {
3626                 .name   = "cgroup_weight",
3627                 .lname  = "Cgroup weight",
3628                 .type   = FIO_OPT_INT,
3629                 .off1   = td_var_offset(cgroup_weight),
3630                 .help   = "Use given weight for cgroup",
3631                 .minval = 100,
3632                 .maxval = 1000,
3633                 .parent = "cgroup",
3634                 .category = FIO_OPT_C_GENERAL,
3635                 .group  = FIO_OPT_G_CGROUP,
3636         },
3637         {
3638                 .name   = "uid",
3639                 .lname  = "User ID",
3640                 .type   = FIO_OPT_INT,
3641                 .off1   = td_var_offset(uid),
3642                 .help   = "Run job with this user ID",
3643                 .category = FIO_OPT_C_GENERAL,
3644                 .group  = FIO_OPT_G_CRED,
3645         },
3646         {
3647                 .name   = "gid",
3648                 .lname  = "Group ID",
3649                 .type   = FIO_OPT_INT,
3650                 .off1   = td_var_offset(gid),
3651                 .help   = "Run job with this group ID",
3652                 .category = FIO_OPT_C_GENERAL,
3653                 .group  = FIO_OPT_G_CRED,
3654         },
3655         {
3656                 .name   = "kb_base",
3657                 .lname  = "KB Base",
3658                 .type   = FIO_OPT_INT,
3659                 .off1   = td_var_offset(kb_base),
3660                 .prio   = 1,
3661                 .def    = "1024",
3662                 .posval = {
3663                           { .ival = "1024",
3664                             .oval = 1024,
3665                             .help = "Use 1024 as the K base",
3666                           },
3667                           { .ival = "1000",
3668                             .oval = 1000,
3669                             .help = "Use 1000 as the K base",
3670                           },
3671                 },
3672                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
3673                 .category = FIO_OPT_C_GENERAL,
3674                 .group  = FIO_OPT_G_INVALID,
3675         },
3676         {
3677                 .name   = "unit_base",
3678                 .lname  = "Base unit for reporting (Bits or Bytes)",
3679                 .type   = FIO_OPT_INT,
3680                 .off1   = td_var_offset(unit_base),
3681                 .prio   = 1,
3682                 .posval = {
3683                           { .ival = "0",
3684                             .oval = 0,
3685                             .help = "Auto-detect",
3686                           },
3687                           { .ival = "8",
3688                             .oval = 8,
3689                             .help = "Normal (byte based)",
3690                           },
3691                           { .ival = "1",
3692                             .oval = 1,
3693                             .help = "Bit based",
3694                           },
3695                 },
3696                 .help   = "Bit multiple of result summary data (8 for byte, 1 for bit)",
3697                 .category = FIO_OPT_C_GENERAL,
3698                 .group  = FIO_OPT_G_INVALID,
3699         },
3700         {
3701                 .name   = "hugepage-size",
3702                 .lname  = "Hugepage size",
3703                 .type   = FIO_OPT_INT,
3704                 .off1   = td_var_offset(hugepage_size),
3705                 .help   = "When using hugepages, specify size of each page",
3706                 .def    = __fio_stringify(FIO_HUGE_PAGE),
3707                 .interval = 1024 * 1024,
3708                 .category = FIO_OPT_C_GENERAL,
3709                 .group  = FIO_OPT_G_INVALID,
3710         },
3711         {
3712                 .name   = "flow_id",
3713                 .lname  = "I/O flow ID",
3714                 .type   = FIO_OPT_INT,
3715                 .off1   = td_var_offset(flow_id),
3716                 .help   = "The flow index ID to use",
3717                 .def    = "0",
3718                 .category = FIO_OPT_C_IO,
3719                 .group  = FIO_OPT_G_IO_FLOW,
3720         },
3721         {
3722                 .name   = "flow",
3723                 .lname  = "I/O flow weight",
3724                 .type   = FIO_OPT_INT,
3725                 .off1   = td_var_offset(flow),
3726                 .help   = "Weight for flow control of this job",
3727                 .parent = "flow_id",
3728                 .hide   = 1,
3729                 .def    = "0",
3730                 .category = FIO_OPT_C_IO,
3731                 .group  = FIO_OPT_G_IO_FLOW,
3732         },
3733         {
3734                 .name   = "flow_watermark",
3735                 .lname  = "I/O flow watermark",
3736                 .type   = FIO_OPT_INT,
3737                 .off1   = td_var_offset(flow_watermark),
3738                 .help   = "High watermark for flow control. This option"
3739                         " should be set to the same value for all threads"
3740                         " with non-zero flow.",
3741                 .parent = "flow_id",
3742                 .hide   = 1,
3743                 .def    = "1024",
3744                 .category = FIO_OPT_C_IO,
3745                 .group  = FIO_OPT_G_IO_FLOW,
3746         },
3747         {
3748                 .name   = "flow_sleep",
3749                 .lname  = "I/O flow sleep",
3750                 .type   = FIO_OPT_INT,
3751                 .off1   = td_var_offset(flow_sleep),
3752                 .help   = "How many microseconds to sleep after being held"
3753                         " back by the flow control mechanism",
3754                 .parent = "flow_id",
3755                 .hide   = 1,
3756                 .def    = "0",
3757                 .category = FIO_OPT_C_IO,
3758                 .group  = FIO_OPT_G_IO_FLOW,
3759         },
3760         {
3761                 .name   = "skip_bad",
3762                 .lname  = "Skip operations against bad blocks",
3763                 .type   = FIO_OPT_BOOL,
3764                 .off1   = td_var_offset(skip_bad),
3765                 .help   = "Skip operations against known bad blocks.",
3766                 .hide   = 1,
3767                 .def    = "0",
3768                 .category = FIO_OPT_C_IO,
3769                 .group  = FIO_OPT_G_MTD,
3770         },
3771         {
3772                 .name = NULL,
3773         },
3774 };
3775
3776 static void add_to_lopt(struct option *lopt, struct fio_option *o,
3777                         const char *name, int val)
3778 {
3779         lopt->name = (char *) name;
3780         lopt->val = val;
3781         if (o->type == FIO_OPT_STR_SET)
3782                 lopt->has_arg = optional_argument;
3783         else
3784                 lopt->has_arg = required_argument;
3785 }
3786
3787 static void options_to_lopts(struct fio_option *opts,
3788                               struct option *long_options,
3789                               int i, int option_type)
3790 {
3791         struct fio_option *o = &opts[0];
3792         while (o->name) {
3793                 add_to_lopt(&long_options[i], o, o->name, option_type);
3794                 if (o->alias) {
3795                         i++;
3796                         add_to_lopt(&long_options[i], o, o->alias, option_type);
3797                 }
3798
3799                 i++;
3800                 o++;
3801                 assert(i < FIO_NR_OPTIONS);
3802         }
3803 }
3804
3805 void fio_options_set_ioengine_opts(struct option *long_options,
3806                                    struct thread_data *td)
3807 {
3808         unsigned int i;
3809
3810         i = 0;
3811         while (long_options[i].name) {
3812                 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
3813                         memset(&long_options[i], 0, sizeof(*long_options));
3814                         break;
3815                 }
3816                 i++;
3817         }
3818
3819         /*
3820          * Just clear out the prior ioengine options.
3821          */
3822         if (!td || !td->eo)
3823                 return;
3824
3825         options_to_lopts(td->io_ops->options, long_options, i,
3826                          FIO_GETOPT_IOENGINE);
3827 }
3828
3829 void fio_options_dup_and_init(struct option *long_options)
3830 {
3831         unsigned int i;
3832
3833         options_init(fio_options);
3834
3835         i = 0;
3836         while (long_options[i].name)
3837                 i++;
3838
3839         options_to_lopts(fio_options, long_options, i, FIO_GETOPT_JOB);
3840 }
3841
3842 struct fio_keyword {
3843         const char *word;
3844         const char *desc;
3845         char *replace;
3846 };
3847
3848 static struct fio_keyword fio_keywords[] = {
3849         {
3850                 .word   = "$pagesize",
3851                 .desc   = "Page size in the system",
3852         },
3853         {
3854                 .word   = "$mb_memory",
3855                 .desc   = "Megabytes of memory online",
3856         },
3857         {
3858                 .word   = "$ncpus",
3859                 .desc   = "Number of CPUs online in the system",
3860         },
3861         {
3862                 .word   = NULL,
3863         },
3864 };
3865
3866 void fio_keywords_exit(void)
3867 {
3868         struct fio_keyword *kw;
3869
3870         kw = &fio_keywords[0];
3871         while (kw->word) {
3872                 free(kw->replace);
3873                 kw->replace = NULL;
3874                 kw++;
3875         }
3876 }
3877
3878 void fio_keywords_init(void)
3879 {
3880         unsigned long long mb_memory;
3881         char buf[128];
3882         long l;
3883
3884         sprintf(buf, "%lu", (unsigned long) page_size);
3885         fio_keywords[0].replace = strdup(buf);
3886
3887         mb_memory = os_phys_mem() / (1024 * 1024);
3888         sprintf(buf, "%llu", mb_memory);
3889         fio_keywords[1].replace = strdup(buf);
3890
3891         l = cpus_online();
3892         sprintf(buf, "%lu", l);
3893         fio_keywords[2].replace = strdup(buf);
3894 }
3895
3896 #define BC_APP          "bc"
3897
3898 static char *bc_calc(char *str)
3899 {
3900         char buf[128], *tmp;
3901         FILE *f;
3902         int ret;
3903
3904         /*
3905          * No math, just return string
3906          */
3907         if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
3908              !strchr(str, '/')) || strchr(str, '\''))
3909          &nbs