server: fix potential buffer overrun in bind string
[fio.git] / options.c
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <unistd.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <assert.h>
7 #include <libgen.h>
8 #include <fcntl.h>
9 #include <sys/types.h>
10 #include <sys/stat.h>
11
12 #include "fio.h"
13 #include "verify.h"
14 #include "parse.h"
15 #include "lib/fls.h"
16 #include "options.h"
17
18 #include "crc/crc32c.h"
19
20 /*
21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
22  */
23 static char *get_opt_postfix(const char *str)
24 {
25         char *p = strstr(str, ":");
26
27         if (!p)
28                 return NULL;
29
30         p++;
31         strip_blank_front(&p);
32         strip_blank_end(p);
33         return strdup(p);
34 }
35
36 static int converthexchartoint(char a)
37 {
38         int base;
39
40         switch (a) {
41         case '0'...'9':
42                 base = '0';
43                 break;
44         case 'A'...'F':
45                 base = 'A' - 10;
46                 break;
47         case 'a'...'f':
48                 base = 'a' - 10;
49                 break;
50         default:
51                 base = 0;
52         }
53         return a - base;
54 }
55
56 static int bs_cmp(const void *p1, const void *p2)
57 {
58         const struct bssplit *bsp1 = p1;
59         const struct bssplit *bsp2 = p2;
60
61         return bsp1->perc < bsp2->perc;
62 }
63
64 static int bssplit_ddir(struct thread_options *o, int ddir, char *str)
65 {
66         struct bssplit *bssplit;
67         unsigned int i, perc, perc_missing;
68         unsigned int max_bs, min_bs;
69         long long val;
70         char *fname;
71
72         o->bssplit_nr[ddir] = 4;
73         bssplit = malloc(4 * sizeof(struct bssplit));
74
75         i = 0;
76         max_bs = 0;
77         min_bs = -1;
78         while ((fname = strsep(&str, ":")) != NULL) {
79                 char *perc_str;
80
81                 if (!strlen(fname))
82                         break;
83
84                 /*
85                  * grow struct buffer, if needed
86                  */
87                 if (i == o->bssplit_nr[ddir]) {
88                         o->bssplit_nr[ddir] <<= 1;
89                         bssplit = realloc(bssplit, o->bssplit_nr[ddir]
90                                                   * sizeof(struct bssplit));
91                 }
92
93                 perc_str = strstr(fname, "/");
94                 if (perc_str) {
95                         *perc_str = '\0';
96                         perc_str++;
97                         perc = atoi(perc_str);
98                         if (perc > 100)
99                                 perc = 100;
100                         else if (!perc)
101                                 perc = -1;
102                 } else
103                         perc = -1;
104
105                 if (str_to_decimal(fname, &val, 1, o, 0)) {
106                         log_err("fio: bssplit conversion failed\n");
107                         free(bssplit);
108                         return 1;
109                 }
110
111                 if (val > max_bs)
112                         max_bs = val;
113                 if (val < min_bs)
114                         min_bs = val;
115
116                 bssplit[i].bs = val;
117                 bssplit[i].perc = perc;
118                 i++;
119         }
120
121         o->bssplit_nr[ddir] = i;
122
123         /*
124          * Now check if the percentages add up, and how much is missing
125          */
126         perc = perc_missing = 0;
127         for (i = 0; i < o->bssplit_nr[ddir]; i++) {
128                 struct bssplit *bsp = &bssplit[i];
129
130                 if (bsp->perc == (unsigned char) -1)
131                         perc_missing++;
132                 else
133                         perc += bsp->perc;
134         }
135
136         if (perc > 100) {
137                 log_err("fio: bssplit percentages add to more than 100%%\n");
138                 free(bssplit);
139                 return 1;
140         }
141         /*
142          * If values didn't have a percentage set, divide the remains between
143          * them.
144          */
145         if (perc_missing) {
146                 for (i = 0; i < o->bssplit_nr[ddir]; i++) {
147                         struct bssplit *bsp = &bssplit[i];
148
149                         if (bsp->perc == (unsigned char) -1)
150                                 bsp->perc = (100 - perc) / perc_missing;
151                 }
152         }
153
154         o->min_bs[ddir] = min_bs;
155         o->max_bs[ddir] = max_bs;
156
157         /*
158          * now sort based on percentages, for ease of lookup
159          */
160         qsort(bssplit, o->bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
161         o->bssplit[ddir] = bssplit;
162         return 0;
163 }
164
165 static int str_bssplit_cb(void *data, const char *input)
166 {
167         struct thread_data *td = data;
168         char *str, *p, *odir, *ddir;
169         int ret = 0;
170
171         if (parse_dryrun())
172                 return 0;
173
174         p = str = strdup(input);
175
176         strip_blank_front(&str);
177         strip_blank_end(str);
178
179         odir = strchr(str, ',');
180         if (odir) {
181                 ddir = strchr(odir + 1, ',');
182                 if (ddir) {
183                         ret = bssplit_ddir(&td->o, DDIR_TRIM, ddir + 1);
184                         if (!ret)
185                                 *ddir = '\0';
186                 } else {
187                         char *op;
188
189                         op = strdup(odir + 1);
190                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
191
192                         free(op);
193                 }
194                 if (!ret)
195                         ret = bssplit_ddir(&td->o, DDIR_WRITE, odir + 1);
196                 if (!ret) {
197                         *odir = '\0';
198                         ret = bssplit_ddir(&td->o, DDIR_READ, str);
199                 }
200         } else {
201                 char *op;
202
203                 op = strdup(str);
204                 ret = bssplit_ddir(&td->o, DDIR_WRITE, op);
205                 free(op);
206
207                 if (!ret) {
208                         op = strdup(str);
209                         ret = bssplit_ddir(&td->o, DDIR_TRIM, op);
210                         free(op);
211                 }
212                 ret = bssplit_ddir(&td->o, DDIR_READ, str);
213         }
214
215         free(p);
216         return ret;
217 }
218
219 static int str2error(char *str)
220 {
221         const char *err[] = { "EPERM", "ENOENT", "ESRCH", "EINTR", "EIO",
222                             "ENXIO", "E2BIG", "ENOEXEC", "EBADF",
223                             "ECHILD", "EAGAIN", "ENOMEM", "EACCES",
224                             "EFAULT", "ENOTBLK", "EBUSY", "EEXIST",
225                             "EXDEV", "ENODEV", "ENOTDIR", "EISDIR",
226                             "EINVAL", "ENFILE", "EMFILE", "ENOTTY",
227                             "ETXTBSY","EFBIG", "ENOSPC", "ESPIPE",
228                             "EROFS","EMLINK", "EPIPE", "EDOM", "ERANGE" };
229         int i = 0, num = sizeof(err) / sizeof(void *);
230
231         while (i < num) {
232                 if (!strcmp(err[i], str))
233                         return i + 1;
234                 i++;
235         }
236         return 0;
237 }
238
239 static int ignore_error_type(struct thread_data *td, int etype, char *str)
240 {
241         unsigned int i;
242         int *error;
243         char *fname;
244
245         if (etype >= ERROR_TYPE_CNT) {
246                 log_err("Illegal error type\n");
247                 return 1;
248         }
249
250         td->o.ignore_error_nr[etype] = 4;
251         error = malloc(4 * sizeof(struct bssplit));
252
253         i = 0;
254         while ((fname = strsep(&str, ":")) != NULL) {
255
256                 if (!strlen(fname))
257                         break;
258
259                 /*
260                  * grow struct buffer, if needed
261                  */
262                 if (i == td->o.ignore_error_nr[etype]) {
263                         td->o.ignore_error_nr[etype] <<= 1;
264                         error = realloc(error, td->o.ignore_error_nr[etype]
265                                                   * sizeof(int));
266                 }
267                 if (fname[0] == 'E') {
268                         error[i] = str2error(fname);
269                 } else {
270                         error[i] = atoi(fname);
271                         if (error[i] < 0)
272                                 error[i] = error[i];
273                 }
274                 if (!error[i]) {
275                         log_err("Unknown error %s, please use number value \n",
276                                   fname);
277                         free(error);
278                         return 1;
279                 }
280                 i++;
281         }
282         if (i) {
283                 td->o.continue_on_error |= 1 << etype;
284                 td->o.ignore_error_nr[etype] = i;
285                 td->o.ignore_error[etype] = error;
286         } else
287                 free(error);
288
289         return 0;
290
291 }
292
293 static int str_ignore_error_cb(void *data, const char *input)
294 {
295         struct thread_data *td = data;
296         char *str, *p, *n;
297         int type = 0, ret = 1;
298
299         if (parse_dryrun())
300                 return 0;
301
302         p = str = strdup(input);
303
304         strip_blank_front(&str);
305         strip_blank_end(str);
306
307         while (p) {
308                 n = strchr(p, ',');
309                 if (n)
310                         *n++ = '\0';
311                 ret = ignore_error_type(td, type, p);
312                 if (ret)
313                         break;
314                 p = n;
315                 type++;
316         }
317         free(str);
318         return ret;
319 }
320
321 static int str_rw_cb(void *data, const char *str)
322 {
323         struct thread_data *td = data;
324         struct thread_options *o = &td->o;
325         char *nr;
326
327         if (parse_dryrun())
328                 return 0;
329
330         o->ddir_seq_nr = 1;
331         o->ddir_seq_add = 0;
332
333         nr = get_opt_postfix(str);
334         if (!nr)
335                 return 0;
336
337         if (td_random(td))
338                 o->ddir_seq_nr = atoi(nr);
339         else {
340                 long long val;
341
342                 if (str_to_decimal(nr, &val, 1, o, 0)) {
343                         log_err("fio: rw postfix parsing failed\n");
344                         free(nr);
345                         return 1;
346                 }
347
348                 o->ddir_seq_add = val;
349         }
350
351         free(nr);
352         return 0;
353 }
354
355 static int str_mem_cb(void *data, const char *mem)
356 {
357         struct thread_data *td = data;
358
359         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP)
360                 td->o.mmapfile = get_opt_postfix(mem);
361
362         return 0;
363 }
364
365 static int fio_clock_source_cb(void *data, const char *str)
366 {
367         struct thread_data *td = data;
368
369         fio_clock_source = td->o.clocksource;
370         fio_clock_source_set = 1;
371         fio_clock_init();
372         return 0;
373 }
374
375 static int str_rwmix_read_cb(void *data, unsigned long long *val)
376 {
377         struct thread_data *td = data;
378
379         td->o.rwmix[DDIR_READ] = *val;
380         td->o.rwmix[DDIR_WRITE] = 100 - *val;
381         return 0;
382 }
383
384 static int str_rwmix_write_cb(void *data, unsigned long long *val)
385 {
386         struct thread_data *td = data;
387
388         td->o.rwmix[DDIR_WRITE] = *val;
389         td->o.rwmix[DDIR_READ] = 100 - *val;
390         return 0;
391 }
392
393 static int str_exitall_cb(void)
394 {
395         exitall_on_terminate = 1;
396         return 0;
397 }
398
399 #ifdef FIO_HAVE_CPU_AFFINITY
400 int fio_cpus_split(os_cpu_mask_t *mask, unsigned int cpu_index)
401 {
402         unsigned int i, index, cpus_in_mask;
403         const long max_cpu = cpus_online();
404
405         cpus_in_mask = fio_cpu_count(mask);
406         cpu_index = cpu_index % cpus_in_mask;
407
408         index = 0;
409         for (i = 0; i < max_cpu; i++) {
410                 if (!fio_cpu_isset(mask, i))
411                         continue;
412
413                 if (cpu_index != index)
414                         fio_cpu_clear(mask, i);
415
416                 index++;
417         }
418
419         return fio_cpu_count(mask);
420 }
421
422 static int str_cpumask_cb(void *data, unsigned long long *val)
423 {
424         struct thread_data *td = data;
425         unsigned int i;
426         long max_cpu;
427         int ret;
428
429         if (parse_dryrun())
430                 return 0;
431
432         ret = fio_cpuset_init(&td->o.cpumask);
433         if (ret < 0) {
434                 log_err("fio: cpuset_init failed\n");
435                 td_verror(td, ret, "fio_cpuset_init");
436                 return 1;
437         }
438
439         max_cpu = cpus_online();
440
441         for (i = 0; i < sizeof(int) * 8; i++) {
442                 if ((1 << i) & *val) {
443                         if (i > max_cpu) {
444                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
445                                                                 max_cpu);
446                                 return 1;
447                         }
448                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
449                         fio_cpu_set(&td->o.cpumask, i);
450                 }
451         }
452
453         td->o.cpumask_set = 1;
454         return 0;
455 }
456
457 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
458                             const char *input)
459 {
460         char *cpu, *str, *p;
461         long max_cpu;
462         int ret = 0;
463
464         ret = fio_cpuset_init(mask);
465         if (ret < 0) {
466                 log_err("fio: cpuset_init failed\n");
467                 td_verror(td, ret, "fio_cpuset_init");
468                 return 1;
469         }
470
471         p = str = strdup(input);
472
473         strip_blank_front(&str);
474         strip_blank_end(str);
475
476         max_cpu = cpus_online();
477
478         while ((cpu = strsep(&str, ",")) != NULL) {
479                 char *str2, *cpu2;
480                 int icpu, icpu2;
481
482                 if (!strlen(cpu))
483                         break;
484
485                 str2 = cpu;
486                 icpu2 = -1;
487                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
488                         if (!strlen(cpu2))
489                                 break;
490
491                         icpu2 = atoi(cpu2);
492                 }
493
494                 icpu = atoi(cpu);
495                 if (icpu2 == -1)
496                         icpu2 = icpu;
497                 while (icpu <= icpu2) {
498                         if (icpu >= FIO_MAX_CPUS) {
499                                 log_err("fio: your OS only supports up to"
500                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
501                                 ret = 1;
502                                 break;
503                         }
504                         if (icpu > max_cpu) {
505                                 log_err("fio: CPU %d too large (max=%ld)\n",
506                                                         icpu, max_cpu);
507                                 ret = 1;
508                                 break;
509                         }
510
511                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
512                         fio_cpu_set(mask, icpu);
513                         icpu++;
514                 }
515                 if (ret)
516                         break;
517         }
518
519         free(p);
520         if (!ret)
521                 td->o.cpumask_set = 1;
522         return ret;
523 }
524
525 static int str_cpus_allowed_cb(void *data, const char *input)
526 {
527         struct thread_data *td = data;
528         int ret;
529
530         if (parse_dryrun())
531                 return 0;
532
533         ret = set_cpus_allowed(td, &td->o.cpumask, input);
534         if (!ret)
535                 td->o.cpumask_set = 1;
536
537         return ret;
538 }
539
540 static int str_verify_cpus_allowed_cb(void *data, const char *input)
541 {
542         struct thread_data *td = data;
543         int ret;
544
545         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
546         if (!ret)
547                 td->o.verify_cpumask_set = 1;
548
549         return ret;
550 }
551 #endif
552
553 #ifdef CONFIG_LIBNUMA
554 static int str_numa_cpunodes_cb(void *data, char *input)
555 {
556         struct thread_data *td = data;
557
558         if (parse_dryrun())
559                 return 0;
560
561         /* numa_parse_nodestring() parses a character string list
562          * of nodes into a bit mask. The bit mask is allocated by
563          * numa_allocate_nodemask(), so it should be freed by
564          * numa_free_nodemask().
565          */
566         td->o.numa_cpunodesmask = numa_parse_nodestring(input);
567         if (td->o.numa_cpunodesmask == NULL) {
568                 log_err("fio: numa_parse_nodestring failed\n");
569                 td_verror(td, 1, "str_numa_cpunodes_cb");
570                 return 1;
571         }
572
573         td->o.numa_cpumask_set = 1;
574         return 0;
575 }
576
577 static int str_numa_mpol_cb(void *data, char *input)
578 {
579         struct thread_data *td = data;
580         const char * const policy_types[] =
581                 { "default", "prefer", "bind", "interleave", "local", NULL };
582         int i;
583         char *nodelist;
584
585         if (parse_dryrun())
586                 return 0;
587
588         nodelist = strchr(input, ':');
589         if (nodelist) {
590                 /* NUL-terminate mode */
591                 *nodelist++ = '\0';
592         }
593
594         for (i = 0; i <= MPOL_LOCAL; i++) {
595                 if (!strcmp(input, policy_types[i])) {
596                         td->o.numa_mem_mode = i;
597                         break;
598                 }
599         }
600         if (i > MPOL_LOCAL) {
601                 log_err("fio: memory policy should be: default, prefer, bind, interleave, local\n");
602                 goto out;
603         }
604
605         switch (td->o.numa_mem_mode) {
606         case MPOL_PREFERRED:
607                 /*
608                  * Insist on a nodelist of one node only
609                  */
610                 if (nodelist) {
611                         char *rest = nodelist;
612                         while (isdigit(*rest))
613                                 rest++;
614                         if (*rest) {
615                                 log_err("fio: one node only for \'prefer\'\n");
616                                 goto out;
617                         }
618                 } else {
619                         log_err("fio: one node is needed for \'prefer\'\n");
620                         goto out;
621                 }
622                 break;
623         case MPOL_INTERLEAVE:
624                 /*
625                  * Default to online nodes with memory if no nodelist
626                  */
627                 if (!nodelist)
628                         nodelist = strdup("all");
629                 break;
630         case MPOL_LOCAL:
631         case MPOL_DEFAULT:
632                 /*
633                  * Don't allow a nodelist
634                  */
635                 if (nodelist) {
636                         log_err("fio: NO nodelist for \'local\'\n");
637                         goto out;
638                 }
639                 break;
640         case MPOL_BIND:
641                 /*
642                  * Insist on a nodelist
643                  */
644                 if (!nodelist) {
645                         log_err("fio: a nodelist is needed for \'bind\'\n");
646                         goto out;
647                 }
648                 break;
649         }
650
651
652         /* numa_parse_nodestring() parses a character string list
653          * of nodes into a bit mask. The bit mask is allocated by
654          * numa_allocate_nodemask(), so it should be freed by
655          * numa_free_nodemask().
656          */
657         switch (td->o.numa_mem_mode) {
658         case MPOL_PREFERRED:
659                 td->o.numa_mem_prefer_node = atoi(nodelist);
660                 break;
661         case MPOL_INTERLEAVE:
662         case MPOL_BIND:
663                 td->o.numa_memnodesmask = numa_parse_nodestring(nodelist);
664                 if (td->o.numa_memnodesmask == NULL) {
665                         log_err("fio: numa_parse_nodestring failed\n");
666                         td_verror(td, 1, "str_numa_memnodes_cb");
667                         return 1;
668                 }
669                 break;
670         case MPOL_LOCAL:
671         case MPOL_DEFAULT:
672         default:
673                 break;
674         }
675
676         td->o.numa_memmask_set = 1;
677         return 0;
678
679 out:
680         return 1;
681 }
682 #endif
683
684 static int str_fst_cb(void *data, const char *str)
685 {
686         struct thread_data *td = data;
687         char *nr = get_opt_postfix(str);
688
689         td->file_service_nr = 1;
690         if (nr) {
691                 td->file_service_nr = atoi(nr);
692                 free(nr);
693         }
694
695         return 0;
696 }
697
698 #ifdef CONFIG_SYNC_FILE_RANGE
699 static int str_sfr_cb(void *data, const char *str)
700 {
701         struct thread_data *td = data;
702         char *nr = get_opt_postfix(str);
703
704         td->sync_file_range_nr = 1;
705         if (nr) {
706                 td->sync_file_range_nr = atoi(nr);
707                 free(nr);
708         }
709
710         return 0;
711 }
712 #endif
713
714 static int str_random_distribution_cb(void *data, const char *str)
715 {
716         struct thread_data *td = data;
717         double val;
718         char *nr;
719
720         if (parse_dryrun())
721                 return 0;
722
723         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
724                 val = 1.1;
725         else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
726                 val = 0.2;
727         else
728                 return 0;
729
730         nr = get_opt_postfix(str);
731         if (nr && !str_to_float(nr, &val)) {
732                 log_err("fio: random postfix parsing failed\n");
733                 free(nr);
734                 return 1;
735         }
736
737         free(nr);
738
739         if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) {
740                 if (val == 1.00) {
741                         log_err("fio: zipf theta must different than 1.0\n");
742                         return 1;
743                 }
744                 td->o.zipf_theta.u.f = val;
745         } else {
746                 if (val <= 0.00 || val >= 1.00) {
747                         log_err("fio: pareto input out of range (0 < input < 1.0)\n");
748                         return 1;
749                 }
750                 td->o.pareto_h.u.f = val;
751         }
752
753         return 0;
754 }
755
756 /*
757  * Return next name in the string. Files are separated with ':'. If the ':'
758  * is escaped with a '\', then that ':' is part of the filename and does not
759  * indicate a new file.
760  */
761 static char *get_next_name(char **ptr)
762 {
763         char *str = *ptr;
764         char *p, *start;
765
766         if (!str || !strlen(str))
767                 return NULL;
768
769         start = str;
770         do {
771                 /*
772                  * No colon, we are done
773                  */
774                 p = strchr(str, ':');
775                 if (!p) {
776                         *ptr = NULL;
777                         break;
778                 }
779
780                 /*
781                  * We got a colon, but it's the first character. Skip and
782                  * continue
783                  */
784                 if (p == start) {
785                         str = ++start;
786                         continue;
787                 }
788
789                 if (*(p - 1) != '\\') {
790                         *p = '\0';
791                         *ptr = p + 1;
792                         break;
793                 }
794
795                 memmove(p - 1, p, strlen(p) + 1);
796                 str = p;
797         } while (1);
798
799         return start;
800 }
801
802
803 static int get_max_name_idx(char *input)
804 {
805         unsigned int cur_idx;
806         char *str, *p;
807
808         p = str = strdup(input);
809         for (cur_idx = 0; ; cur_idx++)
810                 if (get_next_name(&str) == NULL)
811                         break;
812
813         free(p);
814         return cur_idx;
815 }
816
817 /*
818  * Returns the directory at the index, indexes > entires will be
819  * assigned via modulo division of the index
820  */
821 int set_name_idx(char *target, char *input, int index)
822 {
823         unsigned int cur_idx;
824         int len;
825         char *fname, *str, *p;
826
827         p = str = strdup(input);
828
829         index %= get_max_name_idx(input);
830         for (cur_idx = 0; cur_idx <= index; cur_idx++)
831                 fname = get_next_name(&str);
832
833         len = sprintf(target, "%s/", fname);
834         free(p);
835
836         return len;
837 }
838
839 static int str_filename_cb(void *data, const char *input)
840 {
841         struct thread_data *td = data;
842         char *fname, *str, *p;
843
844         p = str = strdup(input);
845
846         strip_blank_front(&str);
847         strip_blank_end(str);
848
849         if (!td->files_index)
850                 td->o.nr_files = 0;
851
852         while ((fname = get_next_name(&str)) != NULL) {
853                 if (!strlen(fname))
854                         break;
855                 add_file(td, fname, 0, 1);
856         }
857
858         free(p);
859         return 0;
860 }
861
862 static int str_directory_cb(void *data, const char fio_unused *unused)
863 {
864         struct thread_data *td = data;
865         struct stat sb;
866         char *dirname, *str, *p;
867         int ret = 0;
868
869         if (parse_dryrun())
870                 return 0;
871
872         p = str = strdup(td->o.directory);
873         while ((dirname = get_next_name(&str)) != NULL) {
874                 if (lstat(dirname, &sb) < 0) {
875                         ret = errno;
876
877                         log_err("fio: %s is not a directory\n", dirname);
878                         td_verror(td, ret, "lstat");
879                         goto out;
880                 }
881                 if (!S_ISDIR(sb.st_mode)) {
882                         log_err("fio: %s is not a directory\n", dirname);
883                         ret = 1;
884                         goto out;
885                 }
886         }
887
888 out:
889         free(p);
890         return ret;
891 }
892
893 static int str_lockfile_cb(void *data, const char fio_unused *str)
894 {
895         struct thread_data *td = data;
896
897         if (td->files_index) {
898                 log_err("fio: lockfile= option must precede filename=\n");
899                 return 1;
900         }
901
902         return 0;
903 }
904
905 static int str_opendir_cb(void *data, const char fio_unused *str)
906 {
907         struct thread_data *td = data;
908
909         if (parse_dryrun())
910                 return 0;
911
912         if (!td->files_index)
913                 td->o.nr_files = 0;
914
915         return add_dir_files(td, td->o.opendir);
916 }
917
918 static int pattern_cb(char *pattern, unsigned int max_size,
919                       const char *input, unsigned int *pattern_bytes)
920 {
921         long off;
922         int i = 0, j = 0, len, k, base = 10;
923         uint32_t pattern_length;
924         char *loc1, *loc2;
925
926         loc1 = strstr(input, "0x");
927         loc2 = strstr(input, "0X");
928         if (loc1 || loc2)
929                 base = 16;
930         off = strtol(input, NULL, base);
931         if (off != LONG_MAX || errno != ERANGE) {
932                 while (off) {
933                         pattern[i] = off & 0xff;
934                         off >>= 8;
935                         i++;
936                 }
937         } else {
938                 len = strlen(input);
939                 k = len - 1;
940                 if (base == 16) {
941                         if (loc1)
942                                 j = loc1 - input + 2;
943                         else
944                                 j = loc2 - input + 2;
945                 } else
946                         return 1;
947                 if (len - j < max_size * 2) {
948                         while (k >= j) {
949                                 off = converthexchartoint(input[k--]);
950                                 if (k >= j)
951                                         off += (converthexchartoint(input[k--])
952                                                 * 16);
953                                 pattern[i++] = (char) off;
954                         }
955                 }
956         }
957
958         /*
959          * Fill the pattern all the way to the end. This greatly reduces
960          * the number of memcpy's we have to do when verifying the IO.
961          */
962         pattern_length = i;
963         while (i > 1 && i * 2 <= max_size) {
964                 memcpy(&pattern[i], &pattern[0], i);
965                 i *= 2;
966         }
967
968         /*
969          * Fill remainder, if the pattern multiple ends up not being
970          * max_size.
971          */
972         while (i > 1 && i < max_size) {
973                 unsigned int b = min(pattern_length, max_size - i);
974
975                 memcpy(&pattern[i], &pattern[0], b);
976                 i += b;
977         }
978
979         if (i == 1) {
980                 /*
981                  * The code in verify_io_u_pattern assumes a single byte pattern
982                  * fills the whole verify pattern buffer.
983                  */
984                 memset(pattern, pattern[0], max_size);
985         }
986
987         *pattern_bytes = i;
988         return 0;
989 }
990
991 static int str_buffer_pattern_cb(void *data, const char *input)
992 {
993         struct thread_data *td = data;
994         int ret;
995
996         ret = pattern_cb(td->o.buffer_pattern, MAX_PATTERN_SIZE, input,
997                                 &td->o.buffer_pattern_bytes);
998
999         if (!ret) {
1000                 td->o.refill_buffers = 0;
1001                 td->o.scramble_buffers = 0;
1002                 td->o.zero_buffers = 0;
1003         }
1004
1005         return ret;
1006 }
1007
1008 static int str_buffer_compress_cb(void *data, unsigned long long *il)
1009 {
1010         struct thread_data *td = data;
1011
1012         td->flags |= TD_F_COMPRESS;
1013         td->o.compress_percentage = *il;
1014         return 0;
1015 }
1016
1017 static int str_verify_pattern_cb(void *data, const char *input)
1018 {
1019         struct thread_data *td = data;
1020         int ret;
1021
1022         ret = pattern_cb(td->o.verify_pattern, MAX_PATTERN_SIZE, input,
1023                                 &td->o.verify_pattern_bytes);
1024
1025         /*
1026          * VERIFY_META could already be set
1027          */
1028         if (!ret && td->o.verify == VERIFY_NONE)
1029                 td->o.verify = VERIFY_PATTERN;
1030
1031         return ret;
1032 }
1033
1034 static int str_gtod_reduce_cb(void *data, int *il)
1035 {
1036         struct thread_data *td = data;
1037         int val = *il;
1038
1039         td->o.disable_lat = !!val;
1040         td->o.disable_clat = !!val;
1041         td->o.disable_slat = !!val;
1042         td->o.disable_bw = !!val;
1043         td->o.clat_percentiles = !val;
1044         if (val)
1045                 td->tv_cache_mask = 63;
1046
1047         return 0;
1048 }
1049
1050 static int str_gtod_cpu_cb(void *data, long long *il)
1051 {
1052         struct thread_data *td = data;
1053         int val = *il;
1054
1055         td->o.gtod_cpu = val;
1056         td->o.gtod_offload = 1;
1057         return 0;
1058 }
1059
1060 static int str_size_cb(void *data, unsigned long long *__val)
1061 {
1062         struct thread_data *td = data;
1063         unsigned long long v = *__val;
1064
1065         if (parse_is_percent(v)) {
1066                 td->o.size = 0;
1067                 td->o.size_percent = -1ULL - v;
1068         } else
1069                 td->o.size = v;
1070
1071         return 0;
1072 }
1073
1074 static int rw_verify(struct fio_option *o, void *data)
1075 {
1076         struct thread_data *td = data;
1077
1078         if (read_only && td_write(td)) {
1079                 log_err("fio: job <%s> has write bit set, but fio is in"
1080                         " read-only mode\n", td->o.name);
1081                 return 1;
1082         }
1083
1084         return 0;
1085 }
1086
1087 static int gtod_cpu_verify(struct fio_option *o, void *data)
1088 {
1089 #ifndef FIO_HAVE_CPU_AFFINITY
1090         struct thread_data *td = data;
1091
1092         if (td->o.gtod_cpu) {
1093                 log_err("fio: platform must support CPU affinity for"
1094                         "gettimeofday() offloading\n");
1095                 return 1;
1096         }
1097 #endif
1098
1099         return 0;
1100 }
1101
1102 /*
1103  * Option grouping
1104  */
1105 static struct opt_group fio_opt_groups[] = {
1106         {
1107                 .name   = "General",
1108                 .mask   = FIO_OPT_C_GENERAL,
1109         },
1110         {
1111                 .name   = "I/O",
1112                 .mask   = FIO_OPT_C_IO,
1113         },
1114         {
1115                 .name   = "File",
1116                 .mask   = FIO_OPT_C_FILE,
1117         },
1118         {
1119                 .name   = "Statistics",
1120                 .mask   = FIO_OPT_C_STAT,
1121         },
1122         {
1123                 .name   = "Logging",
1124                 .mask   = FIO_OPT_C_LOG,
1125         },
1126         {
1127                 .name   = "Profiles",
1128                 .mask   = FIO_OPT_C_PROFILE,
1129         },
1130         {
1131                 .name   = NULL,
1132         },
1133 };
1134
1135 static struct opt_group *__opt_group_from_mask(struct opt_group *ogs, unsigned int *mask,
1136                                                unsigned int inv_mask)
1137 {
1138         struct opt_group *og;
1139         int i;
1140
1141         if (*mask == inv_mask || !*mask)
1142                 return NULL;
1143
1144         for (i = 0; ogs[i].name; i++) {
1145                 og = &ogs[i];
1146
1147                 if (*mask & og->mask) {
1148                         *mask &= ~(og->mask);
1149                         return og;
1150                 }
1151         }
1152
1153         return NULL;
1154 }
1155
1156 struct opt_group *opt_group_from_mask(unsigned int *mask)
1157 {
1158         return __opt_group_from_mask(fio_opt_groups, mask, FIO_OPT_C_INVALID);
1159 }
1160
1161 static struct opt_group fio_opt_cat_groups[] = {
1162         {
1163                 .name   = "Latency profiling",
1164                 .mask   = FIO_OPT_G_LATPROF,
1165         },
1166         {
1167                 .name   = "Rate",
1168                 .mask   = FIO_OPT_G_RATE,
1169         },
1170         {
1171                 .name   = "Zone",
1172                 .mask   = FIO_OPT_G_ZONE,
1173         },
1174         {
1175                 .name   = "Read/write mix",
1176                 .mask   = FIO_OPT_G_RWMIX,
1177         },
1178         {
1179                 .name   = "Verify",
1180                 .mask   = FIO_OPT_G_VERIFY,
1181         },
1182         {
1183                 .name   = "Trim",
1184                 .mask   = FIO_OPT_G_TRIM,
1185         },
1186         {
1187                 .name   = "I/O Logging",
1188                 .mask   = FIO_OPT_G_IOLOG,
1189         },
1190         {
1191                 .name   = "I/O Depth",
1192                 .mask   = FIO_OPT_G_IO_DEPTH,
1193         },
1194         {
1195                 .name   = "I/O Flow",
1196                 .mask   = FIO_OPT_G_IO_FLOW,
1197         },
1198         {
1199                 .name   = "Description",
1200                 .mask   = FIO_OPT_G_DESC,
1201         },
1202         {
1203                 .name   = "Filename",
1204                 .mask   = FIO_OPT_G_FILENAME,
1205         },
1206         {
1207                 .name   = "General I/O",
1208                 .mask   = FIO_OPT_G_IO_BASIC,
1209         },
1210         {
1211                 .name   = "Cgroups",
1212                 .mask   = FIO_OPT_G_CGROUP,
1213         },
1214         {
1215                 .name   = "Runtime",
1216                 .mask   = FIO_OPT_G_RUNTIME,
1217         },
1218         {
1219                 .name   = "Process",
1220                 .mask   = FIO_OPT_G_PROCESS,
1221         },
1222         {
1223                 .name   = "Job credentials / priority",
1224                 .mask   = FIO_OPT_G_CRED,
1225         },
1226         {
1227                 .name   = "Clock settings",
1228                 .mask   = FIO_OPT_G_CLOCK,
1229         },
1230         {
1231                 .name   = "I/O Type",
1232                 .mask   = FIO_OPT_G_IO_TYPE,
1233         },
1234         {
1235                 .name   = "I/O Thinktime",
1236                 .mask   = FIO_OPT_G_THINKTIME,
1237         },
1238         {
1239                 .name   = "Randomizations",
1240                 .mask   = FIO_OPT_G_RANDOM,
1241         },
1242         {
1243                 .name   = "I/O buffers",
1244                 .mask   = FIO_OPT_G_IO_BUF,
1245         },
1246         {
1247                 .name   = "Tiobench profile",
1248                 .mask   = FIO_OPT_G_TIOBENCH,
1249         },
1250
1251         {
1252                 .name   = NULL,
1253         }
1254 };
1255
1256 struct opt_group *opt_group_cat_from_mask(unsigned int *mask)
1257 {
1258         return __opt_group_from_mask(fio_opt_cat_groups, mask, FIO_OPT_G_INVALID);
1259 }
1260
1261 /*
1262  * Map of job/command line options
1263  */
1264 struct fio_option fio_options[FIO_MAX_OPTS] = {
1265         {
1266                 .name   = "description",
1267                 .lname  = "Description of job",
1268                 .type   = FIO_OPT_STR_STORE,
1269                 .off1   = td_var_offset(description),
1270                 .help   = "Text job description",
1271                 .category = FIO_OPT_C_GENERAL,
1272                 .group  = FIO_OPT_G_DESC,
1273         },
1274         {
1275                 .name   = "name",
1276                 .lname  = "Job name",
1277                 .type   = FIO_OPT_STR_STORE,
1278                 .off1   = td_var_offset(name),
1279                 .help   = "Name of this job",
1280                 .category = FIO_OPT_C_GENERAL,
1281                 .group  = FIO_OPT_G_DESC,
1282         },
1283         {
1284                 .name   = "filename",
1285                 .lname  = "Filename(s)",
1286                 .type   = FIO_OPT_STR_STORE,
1287                 .off1   = td_var_offset(filename),
1288                 .cb     = str_filename_cb,
1289                 .prio   = -1, /* must come after "directory" */
1290                 .help   = "File(s) to use for the workload",
1291                 .category = FIO_OPT_C_FILE,
1292                 .group  = FIO_OPT_G_FILENAME,
1293         },
1294         {
1295                 .name   = "directory",
1296                 .lname  = "Directory",
1297                 .type   = FIO_OPT_STR_STORE,
1298                 .off1   = td_var_offset(directory),
1299                 .cb     = str_directory_cb,
1300                 .help   = "Directory to store files in",
1301                 .category = FIO_OPT_C_FILE,
1302                 .group  = FIO_OPT_G_FILENAME,
1303         },
1304         {
1305                 .name   = "filename_format",
1306                 .type   = FIO_OPT_STR_STORE,
1307                 .off1   = td_var_offset(filename_format),
1308                 .prio   = -1, /* must come after "directory" */
1309                 .help   = "Override default $jobname.$jobnum.$filenum naming",
1310                 .def    = "$jobname.$jobnum.$filenum",
1311                 .category = FIO_OPT_C_FILE,
1312                 .group  = FIO_OPT_G_FILENAME,
1313         },
1314         {
1315                 .name   = "lockfile",
1316                 .lname  = "Lockfile",
1317                 .type   = FIO_OPT_STR,
1318                 .off1   = td_var_offset(file_lock_mode),
1319                 .help   = "Lock file when doing IO to it",
1320                 .prio   = 1,
1321                 .parent = "filename",
1322                 .hide   = 0,
1323                 .def    = "none",
1324                 .cb     = str_lockfile_cb,
1325                 .category = FIO_OPT_C_FILE,
1326                 .group  = FIO_OPT_G_FILENAME,
1327                 .posval = {
1328                           { .ival = "none",
1329                             .oval = FILE_LOCK_NONE,
1330                             .help = "No file locking",
1331                           },
1332                           { .ival = "exclusive",
1333                             .oval = FILE_LOCK_EXCLUSIVE,
1334                             .help = "Exclusive file lock",
1335                           },
1336                           {
1337                             .ival = "readwrite",
1338                             .oval = FILE_LOCK_READWRITE,
1339                             .help = "Read vs write lock",
1340                           },
1341                 },
1342         },
1343         {
1344                 .name   = "opendir",
1345                 .lname  = "Open directory",
1346                 .type   = FIO_OPT_STR_STORE,
1347                 .off1   = td_var_offset(opendir),
1348                 .cb     = str_opendir_cb,
1349                 .help   = "Recursively add files from this directory and down",
1350                 .category = FIO_OPT_C_FILE,
1351                 .group  = FIO_OPT_G_FILENAME,
1352         },
1353         {
1354                 .name   = "rw",
1355                 .lname  = "Read/write",
1356                 .alias  = "readwrite",
1357                 .type   = FIO_OPT_STR,
1358                 .cb     = str_rw_cb,
1359                 .off1   = td_var_offset(td_ddir),
1360                 .help   = "IO direction",
1361                 .def    = "read",
1362                 .verify = rw_verify,
1363                 .category = FIO_OPT_C_IO,
1364                 .group  = FIO_OPT_G_IO_BASIC,
1365                 .posval = {
1366                           { .ival = "read",
1367                             .oval = TD_DDIR_READ,
1368                             .help = "Sequential read",
1369                           },
1370                           { .ival = "write",
1371                             .oval = TD_DDIR_WRITE,
1372                             .help = "Sequential write",
1373                           },
1374                           { .ival = "trim",
1375                             .oval = TD_DDIR_TRIM,
1376                             .help = "Sequential trim",
1377                           },
1378                           { .ival = "randread",
1379                             .oval = TD_DDIR_RANDREAD,
1380                             .help = "Random read",
1381                           },
1382                           { .ival = "randwrite",
1383                             .oval = TD_DDIR_RANDWRITE,
1384                             .help = "Random write",
1385                           },
1386                           { .ival = "randtrim",
1387                             .oval = TD_DDIR_RANDTRIM,
1388                             .help = "Random trim",
1389                           },
1390                           { .ival = "rw",
1391                             .oval = TD_DDIR_RW,
1392                             .help = "Sequential read and write mix",
1393                           },
1394                           { .ival = "readwrite",
1395                             .oval = TD_DDIR_RW,
1396                             .help = "Sequential read and write mix",
1397                           },
1398                           { .ival = "randrw",
1399                             .oval = TD_DDIR_RANDRW,
1400                             .help = "Random read and write mix"
1401                           },
1402                 },
1403         },
1404         {
1405                 .name   = "rw_sequencer",
1406                 .lname  = "RW Sequencer",
1407                 .type   = FIO_OPT_STR,
1408                 .off1   = td_var_offset(rw_seq),
1409                 .help   = "IO offset generator modifier",
1410                 .def    = "sequential",
1411                 .category = FIO_OPT_C_IO,
1412                 .group  = FIO_OPT_G_IO_BASIC,
1413                 .posval = {
1414                           { .ival = "sequential",
1415                             .oval = RW_SEQ_SEQ,
1416                             .help = "Generate sequential offsets",
1417                           },
1418                           { .ival = "identical",
1419                             .oval = RW_SEQ_IDENT,
1420                             .help = "Generate identical offsets",
1421                           },
1422                 },
1423         },
1424
1425         {
1426                 .name   = "ioengine",
1427                 .lname  = "IO Engine",
1428                 .type   = FIO_OPT_STR_STORE,
1429                 .off1   = td_var_offset(ioengine),
1430                 .help   = "IO engine to use",
1431                 .def    = FIO_PREFERRED_ENGINE,
1432                 .category = FIO_OPT_C_IO,
1433                 .group  = FIO_OPT_G_IO_BASIC,
1434                 .posval = {
1435                           { .ival = "sync",
1436                             .help = "Use read/write",
1437                           },
1438                           { .ival = "psync",
1439                             .help = "Use pread/pwrite",
1440                           },
1441                           { .ival = "vsync",
1442                             .help = "Use readv/writev",
1443                           },
1444 #ifdef CONFIG_PWRITEV
1445                           { .ival = "pvsync",
1446                             .help = "Use preadv/pwritev",
1447                           },
1448 #endif
1449 #ifdef CONFIG_LIBAIO
1450                           { .ival = "libaio",
1451                             .help = "Linux native asynchronous IO",
1452                           },
1453 #endif
1454 #ifdef CONFIG_POSIXAIO
1455                           { .ival = "posixaio",
1456                             .help = "POSIX asynchronous IO",
1457                           },
1458 #endif
1459 #ifdef CONFIG_SOLARISAIO
1460                           { .ival = "solarisaio",
1461                             .help = "Solaris native asynchronous IO",
1462                           },
1463 #endif
1464 #ifdef CONFIG_WINDOWSAIO
1465                           { .ival = "windowsaio",
1466                             .help = "Windows native asynchronous IO"
1467                           },
1468 #endif
1469 #ifdef CONFIG_RBD
1470                           { .ival = "rbd",
1471                             .help = "Rados Block Device asynchronous IO"
1472                           },
1473 #endif
1474                           { .ival = "mmap",
1475                             .help = "Memory mapped IO"
1476                           },
1477 #ifdef CONFIG_LINUX_SPLICE
1478                           { .ival = "splice",
1479                             .help = "splice/vmsplice based IO",
1480                           },
1481                           { .ival = "netsplice",
1482                             .help = "splice/vmsplice to/from the network",
1483                           },
1484 #endif
1485 #ifdef FIO_HAVE_SGIO
1486                           { .ival = "sg",
1487                             .help = "SCSI generic v3 IO",
1488                           },
1489 #endif
1490                           { .ival = "null",
1491                             .help = "Testing engine (no data transfer)",
1492                           },
1493                           { .ival = "net",
1494                             .help = "Network IO",
1495                           },
1496                           { .ival = "cpuio",
1497                             .help = "CPU cycle burner engine",
1498                           },
1499 #ifdef CONFIG_GUASI
1500                           { .ival = "guasi",
1501                             .help = "GUASI IO engine",
1502                           },
1503 #endif
1504 #ifdef FIO_HAVE_BINJECT
1505                           { .ival = "binject",
1506                             .help = "binject direct inject block engine",
1507                           },
1508 #endif
1509 #ifdef CONFIG_RDMA
1510                           { .ival = "rdma",
1511                             .help = "RDMA IO engine",
1512                           },
1513 #endif
1514 #ifdef CONFIG_FUSION_AW
1515                           { .ival = "fusion-aw-sync",
1516                             .help = "Fusion-io atomic write engine",
1517                           },
1518 #endif
1519 #ifdef CONFIG_LINUX_EXT4_MOVE_EXTENT
1520                           { .ival = "e4defrag",
1521                             .help = "ext4 defrag engine",
1522                           },
1523 #endif
1524 #ifdef CONFIG_LINUX_FALLOCATE
1525                           { .ival = "falloc",
1526                             .help = "fallocate() file based engine",
1527                           },
1528 #endif
1529                           { .ival = "external",
1530                             .help = "Load external engine (append name)",
1531                           },
1532                 },
1533         },
1534         {
1535                 .name   = "iodepth",
1536                 .lname  = "IO Depth",
1537                 .type   = FIO_OPT_INT,
1538                 .off1   = td_var_offset(iodepth),
1539                 .help   = "Number of IO buffers to keep in flight",
1540                 .minval = 1,
1541                 .interval = 1,
1542                 .def    = "1",
1543                 .category = FIO_OPT_C_IO,
1544                 .group  = FIO_OPT_G_IO_BASIC,
1545         },
1546         {
1547                 .name   = "iodepth_batch",
1548                 .lname  = "IO Depth batch",
1549                 .alias  = "iodepth_batch_submit",
1550                 .type   = FIO_OPT_INT,
1551                 .off1   = td_var_offset(iodepth_batch),
1552                 .help   = "Number of IO buffers to submit in one go",
1553                 .parent = "iodepth",
1554                 .hide   = 1,
1555                 .minval = 1,
1556                 .interval = 1,
1557                 .def    = "1",
1558                 .category = FIO_OPT_C_IO,
1559                 .group  = FIO_OPT_G_IO_BASIC,
1560         },
1561         {
1562                 .name   = "iodepth_batch_complete",
1563                 .lname  = "IO Depth batch complete",
1564                 .type   = FIO_OPT_INT,
1565                 .off1   = td_var_offset(iodepth_batch_complete),
1566                 .help   = "Number of IO buffers to retrieve in one go",
1567                 .parent = "iodepth",
1568                 .hide   = 1,
1569                 .minval = 0,
1570                 .interval = 1,
1571                 .def    = "1",
1572                 .category = FIO_OPT_C_IO,
1573                 .group  = FIO_OPT_G_IO_BASIC,
1574         },
1575         {
1576                 .name   = "iodepth_low",
1577                 .lname  = "IO Depth batch low",
1578                 .type   = FIO_OPT_INT,
1579                 .off1   = td_var_offset(iodepth_low),
1580                 .help   = "Low water mark for queuing depth",
1581                 .parent = "iodepth",
1582                 .hide   = 1,
1583                 .interval = 1,
1584                 .category = FIO_OPT_C_IO,
1585                 .group  = FIO_OPT_G_IO_BASIC,
1586         },
1587         {
1588                 .name   = "size",
1589                 .lname  = "Size",
1590                 .type   = FIO_OPT_STR_VAL,
1591                 .cb     = str_size_cb,
1592                 .help   = "Total size of device or files",
1593                 .interval = 1024 * 1024,
1594                 .category = FIO_OPT_C_IO,
1595                 .group  = FIO_OPT_G_INVALID,
1596         },
1597         {
1598                 .name   = "fill_device",
1599                 .lname  = "Fill device",
1600                 .alias  = "fill_fs",
1601                 .type   = FIO_OPT_BOOL,
1602                 .off1   = td_var_offset(fill_device),
1603                 .help   = "Write until an ENOSPC error occurs",
1604                 .def    = "0",
1605                 .category = FIO_OPT_C_FILE,
1606                 .group  = FIO_OPT_G_INVALID,
1607         },
1608         {
1609                 .name   = "filesize",
1610                 .lname  = "File size",
1611                 .type   = FIO_OPT_STR_VAL,
1612                 .off1   = td_var_offset(file_size_low),
1613                 .off2   = td_var_offset(file_size_high),
1614                 .minval = 1,
1615                 .help   = "Size of individual files",
1616                 .interval = 1024 * 1024,
1617                 .category = FIO_OPT_C_FILE,
1618                 .group  = FIO_OPT_G_INVALID,
1619         },
1620         {
1621                 .name   = "file_append",
1622                 .lname  = "File append",
1623                 .type   = FIO_OPT_BOOL,
1624                 .off1   = td_var_offset(file_append),
1625                 .help   = "IO will start at the end of the file(s)",
1626                 .def    = "0",
1627                 .category = FIO_OPT_C_FILE,
1628                 .group  = FIO_OPT_G_INVALID,
1629         },
1630         {
1631                 .name   = "offset",
1632                 .lname  = "IO offset",
1633                 .alias  = "fileoffset",
1634                 .type   = FIO_OPT_STR_VAL,
1635                 .off1   = td_var_offset(start_offset),
1636                 .help   = "Start IO from this offset",
1637                 .def    = "0",
1638                 .interval = 1024 * 1024,
1639                 .category = FIO_OPT_C_IO,
1640                 .group  = FIO_OPT_G_INVALID,
1641         },
1642         {
1643                 .name   = "offset_increment",
1644                 .lname  = "IO offset increment",
1645                 .type   = FIO_OPT_STR_VAL,
1646                 .off1   = td_var_offset(offset_increment),
1647                 .help   = "What is the increment from one offset to the next",
1648                 .parent = "offset",
1649                 .hide   = 1,
1650                 .def    = "0",
1651                 .interval = 1024 * 1024,
1652                 .category = FIO_OPT_C_IO,
1653                 .group  = FIO_OPT_G_INVALID,
1654         },
1655         {
1656                 .name   = "number_ios",
1657                 .lname  = "Number of IOs to perform",
1658                 .type   = FIO_OPT_STR_VAL,
1659                 .off1   = td_var_offset(number_ios),
1660                 .help   = "Force job completion of this number of IOs",
1661                 .def    = "0",
1662                 .category = FIO_OPT_C_IO,
1663                 .group  = FIO_OPT_G_INVALID,
1664         },
1665         {
1666                 .name   = "bs",
1667                 .lname  = "Block size",
1668                 .alias  = "blocksize",
1669                 .type   = FIO_OPT_INT,
1670                 .off1   = td_var_offset(bs[DDIR_READ]),
1671                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1672                 .off3   = td_var_offset(bs[DDIR_TRIM]),
1673                 .minval = 1,
1674                 .help   = "Block size unit",
1675                 .def    = "4k",
1676                 .parent = "rw",
1677                 .hide   = 1,
1678                 .interval = 512,
1679                 .category = FIO_OPT_C_IO,
1680                 .group  = FIO_OPT_G_INVALID,
1681         },
1682         {
1683                 .name   = "ba",
1684                 .lname  = "Block size align",
1685                 .alias  = "blockalign",
1686                 .type   = FIO_OPT_INT,
1687                 .off1   = td_var_offset(ba[DDIR_READ]),
1688                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1689                 .off3   = td_var_offset(ba[DDIR_TRIM]),
1690                 .minval = 1,
1691                 .help   = "IO block offset alignment",
1692                 .parent = "rw",
1693                 .hide   = 1,
1694                 .interval = 512,
1695                 .category = FIO_OPT_C_IO,
1696                 .group  = FIO_OPT_G_INVALID,
1697         },
1698         {
1699                 .name   = "bsrange",
1700                 .lname  = "Block size range",
1701                 .alias  = "blocksize_range",
1702                 .type   = FIO_OPT_RANGE,
1703                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1704                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1705                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1706                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1707                 .off5   = td_var_offset(min_bs[DDIR_TRIM]),
1708                 .off6   = td_var_offset(max_bs[DDIR_TRIM]),
1709                 .minval = 1,
1710                 .help   = "Set block size range (in more detail than bs)",
1711                 .parent = "rw",
1712                 .hide   = 1,
1713                 .interval = 4096,
1714                 .category = FIO_OPT_C_IO,
1715                 .group  = FIO_OPT_G_INVALID,
1716         },
1717         {
1718                 .name   = "bssplit",
1719                 .lname  = "Block size split",
1720                 .type   = FIO_OPT_STR,
1721                 .cb     = str_bssplit_cb,
1722                 .help   = "Set a specific mix of block sizes",
1723                 .parent = "rw",
1724                 .hide   = 1,
1725                 .category = FIO_OPT_C_IO,
1726                 .group  = FIO_OPT_G_INVALID,
1727         },
1728         {
1729                 .name   = "bs_unaligned",
1730                 .lname  = "Block size unaligned",
1731                 .alias  = "blocksize_unaligned",
1732                 .type   = FIO_OPT_STR_SET,
1733                 .off1   = td_var_offset(bs_unaligned),
1734                 .help   = "Don't sector align IO buffer sizes",
1735                 .parent = "rw",
1736                 .hide   = 1,
1737                 .category = FIO_OPT_C_IO,
1738                 .group  = FIO_OPT_G_INVALID,
1739         },
1740         {
1741                 .name   = "bs_is_seq_rand",
1742                 .lname  = "Block size division is seq/random (not read/write)",
1743                 .type   = FIO_OPT_BOOL,
1744                 .off1   = td_var_offset(bs_is_seq_rand),
1745                 .help   = "Consider any blocksize setting to be sequential,ramdom",
1746                 .def    = "0",
1747                 .parent = "blocksize",
1748                 .category = FIO_OPT_C_IO,
1749                 .group  = FIO_OPT_G_INVALID,
1750         },
1751         {
1752                 .name   = "randrepeat",
1753                 .lname  = "Random repeatable",
1754                 .type   = FIO_OPT_BOOL,
1755                 .off1   = td_var_offset(rand_repeatable),
1756                 .help   = "Use repeatable random IO pattern",
1757                 .def    = "1",
1758                 .parent = "rw",
1759                 .hide   = 1,
1760                 .category = FIO_OPT_C_IO,
1761                 .group  = FIO_OPT_G_RANDOM,
1762         },
1763         {
1764                 .name   = "randseed",
1765                 .lname  = "The random generator seed",
1766                 .type   = FIO_OPT_STR_VAL,
1767                 .off1   = td_var_offset(rand_seed),
1768                 .help   = "Set the random generator seed value",
1769                 .parent = "rw",
1770                 .category = FIO_OPT_C_IO,
1771                 .group  = FIO_OPT_G_RANDOM,
1772         },
1773         {
1774                 .name   = "use_os_rand",
1775                 .lname  = "Use OS random",
1776                 .type   = FIO_OPT_BOOL,
1777                 .off1   = td_var_offset(use_os_rand),
1778                 .help   = "Set to use OS random generator",
1779                 .def    = "0",
1780                 .parent = "rw",
1781                 .hide   = 1,
1782                 .category = FIO_OPT_C_IO,
1783                 .group  = FIO_OPT_G_RANDOM,
1784         },
1785         {
1786                 .name   = "norandommap",
1787                 .lname  = "No randommap",
1788                 .type   = FIO_OPT_STR_SET,
1789                 .off1   = td_var_offset(norandommap),
1790                 .help   = "Accept potential duplicate random blocks",
1791                 .parent = "rw",
1792                 .hide   = 1,
1793                 .hide_on_set = 1,
1794                 .category = FIO_OPT_C_IO,
1795                 .group  = FIO_OPT_G_RANDOM,
1796         },
1797         {
1798                 .name   = "softrandommap",
1799                 .lname  = "Soft randommap",
1800                 .type   = FIO_OPT_BOOL,
1801                 .off1   = td_var_offset(softrandommap),
1802                 .help   = "Set norandommap if randommap allocation fails",
1803                 .parent = "norandommap",
1804                 .hide   = 1,
1805                 .def    = "0",
1806                 .category = FIO_OPT_C_IO,
1807                 .group  = FIO_OPT_G_RANDOM,
1808         },
1809         {
1810                 .name   = "random_generator",
1811                 .type   = FIO_OPT_STR,
1812                 .off1   = td_var_offset(random_generator),
1813                 .help   = "Type of random number generator to use",
1814                 .def    = "tausworthe",
1815                 .posval = {
1816                           { .ival = "tausworthe",
1817                             .oval = FIO_RAND_GEN_TAUSWORTHE,
1818                             .help = "Strong Tausworthe generator",
1819                           },
1820                           { .ival = "lfsr",
1821                             .oval = FIO_RAND_GEN_LFSR,
1822                             .help = "Variable length LFSR",
1823                           },
1824                 },
1825                 .category = FIO_OPT_C_IO,
1826                 .group  = FIO_OPT_G_RANDOM,
1827         },
1828         {
1829                 .name   = "random_distribution",
1830                 .type   = FIO_OPT_STR,
1831                 .off1   = td_var_offset(random_distribution),
1832                 .cb     = str_random_distribution_cb,
1833                 .help   = "Random offset distribution generator",
1834                 .def    = "random",
1835                 .posval = {
1836                           { .ival = "random",
1837                             .oval = FIO_RAND_DIST_RANDOM,
1838                             .help = "Completely random",
1839                           },
1840                           { .ival = "zipf",
1841                             .oval = FIO_RAND_DIST_ZIPF,
1842                             .help = "Zipf distribution",
1843                           },
1844                           { .ival = "pareto",
1845                             .oval = FIO_RAND_DIST_PARETO,
1846                             .help = "Pareto distribution",
1847                           },
1848                 },
1849                 .category = FIO_OPT_C_IO,
1850                 .group  = FIO_OPT_G_RANDOM,
1851         },
1852         {
1853                 .name   = "percentage_random",
1854                 .lname  = "Percentage Random",
1855                 .type   = FIO_OPT_INT,
1856                 .off1   = td_var_offset(perc_rand[DDIR_READ]),
1857                 .off2   = td_var_offset(perc_rand[DDIR_WRITE]),
1858                 .off3   = td_var_offset(perc_rand[DDIR_TRIM]),
1859                 .maxval = 100,
1860                 .help   = "Percentage of seq/random mix that should be random",
1861                 .def    = "100,100,100",
1862                 .interval = 5,
1863                 .inverse = "percentage_sequential",
1864                 .category = FIO_OPT_C_IO,
1865                 .group  = FIO_OPT_G_RANDOM,
1866         },
1867         {
1868                 .name   = "percentage_sequential",
1869                 .lname  = "Percentage Sequential",
1870                 .type   = FIO_OPT_DEPRECATED,
1871                 .category = FIO_OPT_C_IO,
1872                 .group  = FIO_OPT_G_RANDOM,
1873         },
1874         {
1875                 .name   = "allrandrepeat",
1876                 .type   = FIO_OPT_BOOL,
1877                 .off1   = td_var_offset(allrand_repeatable),
1878                 .help   = "Use repeatable random numbers for everything",
1879                 .def    = "0",
1880                 .category = FIO_OPT_C_IO,
1881                 .group  = FIO_OPT_G_RANDOM,
1882         },
1883         {
1884                 .name   = "nrfiles",
1885                 .lname  = "Number of files",
1886                 .alias  = "nr_files",
1887                 .type   = FIO_OPT_INT,
1888                 .off1   = td_var_offset(nr_files),
1889                 .help   = "Split job workload between this number of files",
1890                 .def    = "1",
1891                 .interval = 1,
1892                 .category = FIO_OPT_C_FILE,
1893                 .group  = FIO_OPT_G_INVALID,
1894         },
1895         {
1896                 .name   = "openfiles",
1897                 .lname  = "Number of open files",
1898                 .type   = FIO_OPT_INT,
1899                 .off1   = td_var_offset(open_files),
1900                 .help   = "Number of files to keep open at the same time",
1901                 .category = FIO_OPT_C_FILE,
1902                 .group  = FIO_OPT_G_INVALID,
1903         },
1904         {
1905                 .name   = "file_service_type",
1906                 .lname  = "File service type",
1907                 .type   = FIO_OPT_STR,
1908                 .cb     = str_fst_cb,
1909                 .off1   = td_var_offset(file_service_type),
1910                 .help   = "How to select which file to service next",
1911                 .def    = "roundrobin",
1912                 .category = FIO_OPT_C_FILE,
1913                 .group  = FIO_OPT_G_INVALID,
1914                 .posval = {
1915                           { .ival = "random",
1916                             .oval = FIO_FSERVICE_RANDOM,
1917                             .help = "Choose a file at random",
1918                           },
1919                           { .ival = "roundrobin",
1920                             .oval = FIO_FSERVICE_RR,
1921                             .help = "Round robin select files",
1922                           },
1923                           { .ival = "sequential",
1924                             .oval = FIO_FSERVICE_SEQ,
1925                             .help = "Finish one file before moving to the next",
1926                           },
1927                 },
1928                 .parent = "nrfiles",
1929                 .hide   = 1,
1930         },
1931 #ifdef CONFIG_POSIX_FALLOCATE
1932         {
1933                 .name   = "fallocate",
1934                 .lname  = "Fallocate",
1935                 .type   = FIO_OPT_STR,
1936                 .off1   = td_var_offset(fallocate_mode),
1937                 .help   = "Whether pre-allocation is performed when laying out files",
1938                 .def    = "posix",
1939                 .category = FIO_OPT_C_FILE,
1940                 .group  = FIO_OPT_G_INVALID,
1941                 .posval = {
1942                           { .ival = "none",
1943                             .oval = FIO_FALLOCATE_NONE,
1944                             .help = "Do not pre-allocate space",
1945                           },
1946                           { .ival = "posix",
1947                             .oval = FIO_FALLOCATE_POSIX,
1948                             .help = "Use posix_fallocate()",
1949                           },
1950 #ifdef CONFIG_LINUX_FALLOCATE
1951                           { .ival = "keep",
1952                             .oval = FIO_FALLOCATE_KEEP_SIZE,
1953                             .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1954                           },
1955 #endif
1956                           /* Compatibility with former boolean values */
1957                           { .ival = "0",
1958                             .oval = FIO_FALLOCATE_NONE,
1959                             .help = "Alias for 'none'",
1960                           },
1961                           { .ival = "1",
1962                             .oval = FIO_FALLOCATE_POSIX,
1963                             .help = "Alias for 'posix'",
1964                           },
1965                 },
1966         },
1967 #endif  /* CONFIG_POSIX_FALLOCATE */
1968         {
1969                 .name   = "fadvise_hint",
1970                 .lname  = "Fadvise hint",
1971                 .type   = FIO_OPT_BOOL,
1972                 .off1   = td_var_offset(fadvise_hint),
1973                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1974                 .def    = "1",
1975                 .category = FIO_OPT_C_FILE,
1976                 .group  = FIO_OPT_G_INVALID,
1977         },
1978         {
1979                 .name   = "fsync",
1980                 .lname  = "Fsync",
1981                 .type   = FIO_OPT_INT,
1982                 .off1   = td_var_offset(fsync_blocks),
1983                 .help   = "Issue fsync for writes every given number of blocks",
1984                 .def    = "0",
1985                 .interval = 1,
1986                 .category = FIO_OPT_C_FILE,
1987                 .group  = FIO_OPT_G_INVALID,
1988         },
1989         {
1990                 .name   = "fdatasync",
1991                 .lname  = "Fdatasync",
1992                 .type   = FIO_OPT_INT,
1993                 .off1   = td_var_offset(fdatasync_blocks),
1994                 .help   = "Issue fdatasync for writes every given number of blocks",
1995                 .def    = "0",
1996                 .interval = 1,
1997                 .category = FIO_OPT_C_FILE,
1998                 .group  = FIO_OPT_G_INVALID,
1999         },
2000         {
2001                 .name   = "write_barrier",
2002                 .lname  = "Write barrier",
2003                 .type   = FIO_OPT_INT,
2004                 .off1   = td_var_offset(barrier_blocks),
2005                 .help   = "Make every Nth write a barrier write",
2006                 .def    = "0",
2007                 .interval = 1,
2008                 .category = FIO_OPT_C_IO,
2009                 .group  = FIO_OPT_G_INVALID,
2010         },
2011 #ifdef CONFIG_SYNC_FILE_RANGE
2012         {
2013                 .name   = "sync_file_range",
2014                 .lname  = "Sync file range",
2015                 .posval = {
2016                           { .ival = "wait_before",
2017                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
2018                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
2019                             .orval  = 1,
2020                           },
2021                           { .ival = "write",
2022                             .oval = SYNC_FILE_RANGE_WRITE,
2023                             .help = "SYNC_FILE_RANGE_WRITE",
2024                             .orval  = 1,
2025                           },
2026                           {
2027                             .ival = "wait_after",
2028                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
2029                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
2030                             .orval  = 1,
2031                           },
2032                 },
2033                 .type   = FIO_OPT_STR_MULTI,
2034                 .cb     = str_sfr_cb,
2035                 .off1   = td_var_offset(sync_file_range),
2036                 .help   = "Use sync_file_range()",
2037                 .category = FIO_OPT_C_FILE,
2038                 .group  = FIO_OPT_G_INVALID,
2039         },
2040 #endif
2041         {
2042                 .name   = "direct",
2043                 .lname  = "Direct I/O",
2044                 .type   = FIO_OPT_BOOL,
2045                 .off1   = td_var_offset(odirect),
2046                 .help   = "Use O_DIRECT IO (negates buffered)",
2047                 .def    = "0",
2048                 .inverse = "buffered",
2049                 .category = FIO_OPT_C_IO,
2050                 .group  = FIO_OPT_G_IO_TYPE,
2051         },
2052         {
2053                 .name   = "atomic",
2054                 .lname  = "Atomic I/O",
2055                 .type   = FIO_OPT_BOOL,
2056                 .off1   = td_var_offset(oatomic),
2057                 .help   = "Use Atomic IO with O_DIRECT (implies O_DIRECT)",
2058                 .def    = "0",
2059                 .category = FIO_OPT_C_IO,
2060                 .group  = FIO_OPT_G_IO_TYPE,
2061         },
2062         {
2063                 .name   = "buffered",
2064                 .lname  = "Buffered I/O",
2065                 .type   = FIO_OPT_BOOL,
2066                 .off1   = td_var_offset(odirect),
2067                 .neg    = 1,
2068                 .help   = "Use buffered IO (negates direct)",
2069                 .def    = "1",
2070                 .inverse = "direct",
2071                 .category = FIO_OPT_C_IO,
2072                 .group  = FIO_OPT_G_IO_TYPE,
2073         },
2074         {
2075                 .name   = "overwrite",
2076                 .lname  = "Overwrite",
2077                 .type   = FIO_OPT_BOOL,
2078                 .off1   = td_var_offset(overwrite),
2079                 .help   = "When writing, set whether to overwrite current data",
2080                 .def    = "0",
2081                 .category = FIO_OPT_C_FILE,
2082                 .group  = FIO_OPT_G_INVALID,
2083         },
2084         {
2085                 .name   = "loops",
2086                 .lname  = "Loops",
2087                 .type   = FIO_OPT_INT,
2088                 .off1   = td_var_offset(loops),
2089                 .help   = "Number of times to run the job",
2090                 .def    = "1",
2091                 .interval = 1,
2092                 .category = FIO_OPT_C_GENERAL,
2093                 .group  = FIO_OPT_G_RUNTIME,
2094         },
2095         {
2096                 .name   = "numjobs",
2097                 .lname  = "Number of jobs",
2098                 .type   = FIO_OPT_INT,
2099                 .off1   = td_var_offset(numjobs),
2100                 .help   = "Duplicate this job this many times",
2101                 .def    = "1",
2102                 .interval = 1,
2103                 .category = FIO_OPT_C_GENERAL,
2104                 .group  = FIO_OPT_G_RUNTIME,
2105         },
2106         {
2107                 .name   = "startdelay",
2108                 .lname  = "Start delay",
2109                 .type   = FIO_OPT_STR_VAL_TIME,
2110                 .off1   = td_var_offset(start_delay),
2111                 .off2   = td_var_offset(start_delay_high),
2112                 .help   = "Only start job when this period has passed",
2113                 .def    = "0",
2114                 .is_seconds = 1,
2115                 .category = FIO_OPT_C_GENERAL,
2116                 .group  = FIO_OPT_G_RUNTIME,
2117         },
2118         {
2119                 .name   = "runtime",
2120                 .lname  = "Runtime",
2121                 .alias  = "timeout",
2122                 .type   = FIO_OPT_STR_VAL_TIME,
2123                 .off1   = td_var_offset(timeout),
2124                 .help   = "Stop workload when this amount of time has passed",
2125                 .def    = "0",
2126                 .is_seconds = 1,
2127                 .category = FIO_OPT_C_GENERAL,
2128                 .group  = FIO_OPT_G_RUNTIME,
2129         },
2130         {
2131                 .name   = "time_based",
2132                 .lname  = "Time based",
2133                 .type   = FIO_OPT_STR_SET,
2134                 .off1   = td_var_offset(time_based),
2135                 .help   = "Keep running until runtime/timeout is met",
2136                 .category = FIO_OPT_C_GENERAL,
2137                 .group  = FIO_OPT_G_RUNTIME,
2138         },
2139         {
2140                 .name   = "verify_only",
2141                 .lname  = "Verify only",
2142                 .type   = FIO_OPT_STR_SET,
2143                 .off1   = td_var_offset(verify_only),
2144                 .help   = "Verifies previously written data is still valid",
2145                 .category = FIO_OPT_C_GENERAL,
2146                 .group  = FIO_OPT_G_RUNTIME,
2147         },
2148         {
2149                 .name   = "ramp_time",
2150                 .lname  = "Ramp time",
2151                 .type   = FIO_OPT_STR_VAL_TIME,
2152                 .off1   = td_var_offset(ramp_time),
2153                 .help   = "Ramp up time before measuring performance",
2154                 .is_seconds = 1,
2155                 .category = FIO_OPT_C_GENERAL,
2156                 .group  = FIO_OPT_G_RUNTIME,
2157         },
2158         {
2159                 .name   = "clocksource",
2160                 .lname  = "Clock source",
2161                 .type   = FIO_OPT_STR,
2162                 .cb     = fio_clock_source_cb,
2163                 .off1   = td_var_offset(clocksource),
2164                 .help   = "What type of timing source to use",
2165                 .category = FIO_OPT_C_GENERAL,
2166                 .group  = FIO_OPT_G_CLOCK,
2167                 .posval = {
2168 #ifdef CONFIG_GETTIMEOFDAY
2169                           { .ival = "gettimeofday",
2170                             .oval = CS_GTOD,
2171                             .help = "Use gettimeofday(2) for timing",
2172                           },
2173 #endif
2174 #ifdef CONFIG_CLOCK_GETTIME
2175                           { .ival = "clock_gettime",
2176                             .oval = CS_CGETTIME,
2177                             .help = "Use clock_gettime(2) for timing",
2178                           },
2179 #endif
2180 #ifdef ARCH_HAVE_CPU_CLOCK
2181                           { .ival = "cpu",
2182                             .oval = CS_CPUCLOCK,
2183                             .help = "Use CPU private clock",
2184                           },
2185 #endif
2186                 },
2187         },
2188         {
2189                 .name   = "mem",
2190                 .alias  = "iomem",
2191                 .lname  = "I/O Memory",
2192                 .type   = FIO_OPT_STR,
2193                 .cb     = str_mem_cb,
2194                 .off1   = td_var_offset(mem_type),
2195                 .help   = "Backing type for IO buffers",
2196                 .def    = "malloc",
2197                 .category = FIO_OPT_C_IO,
2198                 .group  = FIO_OPT_G_INVALID,
2199                 .posval = {
2200                           { .ival = "malloc",
2201                             .oval = MEM_MALLOC,
2202                             .help = "Use malloc(3) for IO buffers",
2203                           },
2204                           { .ival = "shm",
2205                             .oval = MEM_SHM,
2206                             .help = "Use shared memory segments for IO buffers",
2207                           },
2208 #ifdef FIO_HAVE_HUGETLB
2209                           { .ival = "shmhuge",
2210                             .oval = MEM_SHMHUGE,
2211                             .help = "Like shm, but use huge pages",
2212                           },
2213 #endif
2214                           { .ival = "mmap",
2215                             .oval = MEM_MMAP,
2216                             .help = "Use mmap(2) (file or anon) for IO buffers",
2217                           },
2218 #ifdef FIO_HAVE_HUGETLB
2219                           { .ival = "mmaphuge",
2220                             .oval = MEM_MMAPHUGE,
2221                             .help = "Like mmap, but use huge pages",
2222                           },
2223 #endif
2224                   },
2225         },
2226         {
2227                 .name   = "iomem_align",
2228                 .alias  = "mem_align",
2229                 .lname  = "I/O memory alignment",
2230                 .type   = FIO_OPT_INT,
2231                 .off1   = td_var_offset(mem_align),
2232                 .minval = 0,
2233                 .help   = "IO memory buffer offset alignment",
2234                 .def    = "0",
2235                 .parent = "iomem",
2236                 .hide   = 1,
2237                 .category = FIO_OPT_C_IO,
2238                 .group  = FIO_OPT_G_INVALID,
2239         },
2240         {
2241                 .name   = "verify",
2242                 .lname  = "Verify",
2243                 .type   = FIO_OPT_STR,
2244                 .off1   = td_var_offset(verify),
2245                 .help   = "Verify data written",
2246                 .def    = "0",
2247                 .category = FIO_OPT_C_IO,
2248                 .group  = FIO_OPT_G_VERIFY,
2249                 .posval = {
2250                           { .ival = "0",
2251                             .oval = VERIFY_NONE,
2252                             .help = "Don't do IO verification",
2253                           },
2254                           { .ival = "md5",
2255                             .oval = VERIFY_MD5,
2256                             .help = "Use md5 checksums for verification",
2257                           },
2258                           { .ival = "crc64",
2259                             .oval = VERIFY_CRC64,
2260                             .help = "Use crc64 checksums for verification",
2261                           },
2262                           { .ival = "crc32",
2263                             .oval = VERIFY_CRC32,
2264                             .help = "Use crc32 checksums for verification",
2265                           },
2266                           { .ival = "crc32c-intel",
2267                             .oval = VERIFY_CRC32C,
2268                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2269                           },
2270                           { .ival = "crc32c",
2271                             .oval = VERIFY_CRC32C,
2272                             .help = "Use crc32c checksums for verification (hw assisted, if available)",
2273                           },
2274                           { .ival = "crc16",
2275                             .oval = VERIFY_CRC16,
2276                             .help = "Use crc16 checksums for verification",
2277                           },
2278                           { .ival = "crc7",
2279                             .oval = VERIFY_CRC7,
2280                             .help = "Use crc7 checksums for verification",
2281                           },
2282                           { .ival = "sha1",
2283                             .oval = VERIFY_SHA1,
2284                             .help = "Use sha1 checksums for verification",
2285                           },
2286                           { .ival = "sha256",
2287                             .oval = VERIFY_SHA256,
2288                             .help = "Use sha256 checksums for verification",
2289                           },
2290                           { .ival = "sha512",
2291                             .oval = VERIFY_SHA512,
2292                             .help = "Use sha512 checksums for verification",
2293                           },
2294                           { .ival = "xxhash",
2295                             .oval = VERIFY_XXHASH,
2296                             .help = "Use xxhash checksums for verification",
2297                           },
2298                           { .ival = "meta",
2299                             .oval = VERIFY_META,
2300                             .help = "Use io information",
2301                           },
2302                           {
2303                             .ival = "null",
2304                             .oval = VERIFY_NULL,
2305                             .help = "Pretend to verify",
2306                           },
2307                 },
2308         },
2309         {
2310                 .name   = "do_verify",
2311                 .lname  = "Perform verify step",
2312                 .type   = FIO_OPT_BOOL,
2313                 .off1   = td_var_offset(do_verify),
2314                 .help   = "Run verification stage after write",
2315                 .def    = "1",
2316                 .parent = "verify",
2317                 .hide   = 1,
2318                 .category = FIO_OPT_C_IO,
2319                 .group  = FIO_OPT_G_VERIFY,
2320         },
2321         {
2322                 .name   = "verifysort",
2323                 .lname  = "Verify sort",
2324                 .type   = FIO_OPT_BOOL,
2325                 .off1   = td_var_offset(verifysort),
2326                 .help   = "Sort written verify blocks for read back",
2327                 .def    = "1",
2328                 .parent = "verify",
2329                 .hide   = 1,
2330                 .category = FIO_OPT_C_IO,
2331                 .group  = FIO_OPT_G_VERIFY,
2332         },
2333         {
2334                 .name   = "verifysort_nr",
2335                 .type   = FIO_OPT_INT,
2336                 .off1   = td_var_offset(verifysort_nr),
2337                 .help   = "Pre-load and sort verify blocks for a read workload",
2338                 .minval = 0,
2339                 .maxval = 131072,
2340                 .def    = "1024",
2341                 .parent = "verify",
2342                 .category = FIO_OPT_C_IO,
2343                 .group  = FIO_OPT_G_VERIFY,
2344         },
2345         {
2346                 .name   = "verify_interval",
2347                 .lname  = "Verify interval",
2348                 .type   = FIO_OPT_INT,
2349                 .off1   = td_var_offset(verify_interval),
2350                 .minval = 2 * sizeof(struct verify_header),
2351                 .help   = "Store verify buffer header every N bytes",
2352                 .parent = "verify",
2353                 .hide   = 1,
2354                 .interval = 2 * sizeof(struct verify_header),
2355                 .category = FIO_OPT_C_IO,
2356                 .group  = FIO_OPT_G_VERIFY,
2357         },
2358         {
2359                 .name   = "verify_offset",
2360                 .lname  = "Verify offset",
2361                 .type   = FIO_OPT_INT,
2362                 .help   = "Offset verify header location by N bytes",
2363                 .off1   = td_var_offset(verify_offset),
2364                 .minval = sizeof(struct verify_header),
2365                 .parent = "verify",
2366                 .hide   = 1,
2367                 .category = FIO_OPT_C_IO,
2368                 .group  = FIO_OPT_G_VERIFY,
2369         },
2370         {
2371                 .name   = "verify_pattern",
2372                 .lname  = "Verify pattern",
2373                 .type   = FIO_OPT_STR,
2374                 .cb     = str_verify_pattern_cb,
2375                 .help   = "Fill pattern for IO buffers",
2376                 .parent = "verify",
2377                 .hide   = 1,
2378                 .category = FIO_OPT_C_IO,
2379                 .group  = FIO_OPT_G_VERIFY,
2380         },
2381         {
2382                 .name   = "verify_fatal",
2383                 .lname  = "Verify fatal",
2384                 .type   = FIO_OPT_BOOL,
2385                 .off1   = td_var_offset(verify_fatal),
2386                 .def    = "0",
2387                 .help   = "Exit on a single verify failure, don't continue",
2388                 .parent = "verify",
2389                 .hide   = 1,
2390                 .category = FIO_OPT_C_IO,
2391                 .group  = FIO_OPT_G_VERIFY,
2392         },
2393         {
2394                 .name   = "verify_dump",
2395                 .lname  = "Verify dump",
2396                 .type   = FIO_OPT_BOOL,
2397                 .off1   = td_var_offset(verify_dump),
2398                 .def    = "0",
2399                 .help   = "Dump contents of good and bad blocks on failure",
2400                 .parent = "verify",
2401                 .hide   = 1,
2402                 .category = FIO_OPT_C_IO,
2403                 .group  = FIO_OPT_G_VERIFY,
2404         },
2405         {
2406                 .name   = "verify_async",
2407                 .lname  = "Verify asynchronously",
2408                 .type   = FIO_OPT_INT,
2409                 .off1   = td_var_offset(verify_async),
2410                 .def    = "0",
2411                 .help   = "Number of async verifier threads to use",
2412                 .parent = "verify",
2413                 .hide   = 1,
2414                 .category = FIO_OPT_C_IO,
2415                 .group  = FIO_OPT_G_VERIFY,
2416         },
2417         {
2418                 .name   = "verify_backlog",
2419                 .lname  = "Verify backlog",
2420                 .type   = FIO_OPT_STR_VAL,
2421                 .off1   = td_var_offset(verify_backlog),
2422                 .help   = "Verify after this number of blocks are written",
2423                 .parent = "verify",
2424                 .hide   = 1,
2425                 .category = FIO_OPT_C_IO,
2426                 .group  = FIO_OPT_G_VERIFY,
2427         },
2428         {
2429                 .name   = "verify_backlog_batch",
2430                 .lname  = "Verify backlog batch",
2431                 .type   = FIO_OPT_INT,
2432                 .off1   = td_var_offset(verify_batch),
2433                 .help   = "Verify this number of IO blocks",
2434                 .parent = "verify",
2435                 .hide   = 1,
2436                 .category = FIO_OPT_C_IO,
2437                 .group  = FIO_OPT_G_VERIFY,
2438         },
2439 #ifdef FIO_HAVE_CPU_AFFINITY
2440         {
2441                 .name   = "verify_async_cpus",
2442                 .lname  = "Async verify CPUs",
2443                 .type   = FIO_OPT_STR,
2444                 .cb     = str_verify_cpus_allowed_cb,
2445                 .help   = "Set CPUs allowed for async verify threads",
2446                 .parent = "verify_async",
2447                 .hide   = 1,
2448                 .category = FIO_OPT_C_IO,
2449                 .group  = FIO_OPT_G_VERIFY,
2450         },
2451 #endif
2452         {
2453                 .name   = "experimental_verify",
2454                 .off1   = td_var_offset(experimental_verify),
2455                 .type   = FIO_OPT_BOOL,
2456                 .help   = "Enable experimental verification",
2457                 .category = FIO_OPT_C_IO,
2458                 .group  = FIO_OPT_G_VERIFY,
2459         },
2460 #ifdef FIO_HAVE_TRIM
2461         {
2462                 .name   = "trim_percentage",
2463                 .lname  = "Trim percentage",
2464                 .type   = FIO_OPT_INT,
2465                 .off1   = td_var_offset(trim_percentage),
2466                 .minval = 0,
2467                 .maxval = 100,
2468                 .help   = "Number of verify blocks to discard/trim",
2469                 .parent = "verify",
2470                 .def    = "0",
2471                 .interval = 1,
2472                 .hide   = 1,
2473                 .category = FIO_OPT_C_IO,
2474                 .group  = FIO_OPT_G_TRIM,
2475         },
2476         {
2477                 .name   = "trim_verify_zero",
2478                 .lname  = "Verify trim zero",
2479                 .type   = FIO_OPT_BOOL,
2480                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
2481                 .off1   = td_var_offset(trim_zero),
2482                 .parent = "trim_percentage",
2483                 .hide   = 1,
2484                 .def    = "1",
2485                 .category = FIO_OPT_C_IO,
2486                 .group  = FIO_OPT_G_TRIM,
2487         },
2488         {
2489                 .name   = "trim_backlog",
2490                 .lname  = "Trim backlog",
2491                 .type   = FIO_OPT_STR_VAL,
2492                 .off1   = td_var_offset(trim_backlog),
2493                 .help   = "Trim after this number of blocks are written",
2494                 .parent = "trim_percentage",
2495                 .hide   = 1,
2496                 .interval = 1,
2497                 .category = FIO_OPT_C_IO,
2498                 .group  = FIO_OPT_G_TRIM,
2499         },
2500         {
2501                 .name   = "trim_backlog_batch",
2502                 .lname  = "Trim backlog batch",
2503                 .type   = FIO_OPT_INT,
2504                 .off1   = td_var_offset(trim_batch),
2505                 .help   = "Trim this number of IO blocks",
2506                 .parent = "trim_percentage",
2507                 .hide   = 1,
2508                 .interval = 1,
2509                 .category = FIO_OPT_C_IO,
2510                 .group  = FIO_OPT_G_TRIM,
2511         },
2512 #endif
2513         {
2514                 .name   = "write_iolog",
2515                 .lname  = "Write I/O log",
2516                 .type   = FIO_OPT_STR_STORE,
2517                 .off1   = td_var_offset(write_iolog_file),
2518                 .help   = "Store IO pattern to file",
2519                 .category = FIO_OPT_C_IO,
2520                 .group  = FIO_OPT_G_IOLOG,
2521         },
2522         {
2523                 .name   = "read_iolog",
2524                 .lname  = "Read I/O log",
2525                 .type   = FIO_OPT_STR_STORE,
2526                 .off1   = td_var_offset(read_iolog_file),
2527                 .help   = "Playback IO pattern from file",
2528                 .category = FIO_OPT_C_IO,
2529                 .group  = FIO_OPT_G_IOLOG,
2530         },
2531         {
2532                 .name   = "replay_no_stall",
2533                 .lname  = "Don't stall on replay",
2534                 .type   = FIO_OPT_BOOL,
2535                 .off1   = td_var_offset(no_stall),
2536                 .def    = "0",
2537                 .parent = "read_iolog",
2538                 .hide   = 1,
2539                 .help   = "Playback IO pattern file as fast as possible without stalls",
2540                 .category = FIO_OPT_C_IO,
2541                 .group  = FIO_OPT_G_IOLOG,
2542         },
2543         {
2544                 .name   = "replay_redirect",
2545                 .lname  = "Redirect device for replay",
2546                 .type   = FIO_OPT_STR_STORE,
2547                 .off1   = td_var_offset(replay_redirect),
2548                 .parent = "read_iolog",
2549                 .hide   = 1,
2550                 .help   = "Replay all I/O onto this device, regardless of trace device",
2551                 .category = FIO_OPT_C_IO,
2552                 .group  = FIO_OPT_G_IOLOG,
2553         },
2554         {
2555                 .name   = "exec_prerun",
2556                 .lname  = "Pre-execute runnable",
2557                 .type   = FIO_OPT_STR_STORE,
2558                 .off1   = td_var_offset(exec_prerun),
2559                 .help   = "Execute this file prior to running job",
2560                 .category = FIO_OPT_C_GENERAL,
2561                 .group  = FIO_OPT_G_INVALID,
2562         },
2563         {
2564                 .name   = "exec_postrun",
2565                 .lname  = "Post-execute runnable",
2566                 .type   = FIO_OPT_STR_STORE,
2567                 .off1   = td_var_offset(exec_postrun),
2568                 .help   = "Execute this file after running job",
2569                 .category = FIO_OPT_C_GENERAL,
2570                 .group  = FIO_OPT_G_INVALID,
2571         },
2572 #ifdef FIO_HAVE_IOSCHED_SWITCH
2573         {
2574                 .name   = "ioscheduler",
2575                 .lname  = "I/O scheduler",
2576                 .type   = FIO_OPT_STR_STORE,
2577                 .off1   = td_var_offset(ioscheduler),
2578                 .help   = "Use this IO scheduler on the backing device",
2579                 .category = FIO_OPT_C_FILE,
2580                 .group  = FIO_OPT_G_INVALID,
2581         },
2582 #endif
2583         {
2584                 .name   = "zonesize",
2585                 .lname  = "Zone size",
2586                 .type   = FIO_OPT_STR_VAL,
2587                 .off1   = td_var_offset(zone_size),
2588                 .help   = "Amount of data to read per zone",
2589                 .def    = "0",
2590                 .interval = 1024 * 1024,
2591                 .category = FIO_OPT_C_IO,
2592                 .group  = FIO_OPT_G_ZONE,
2593         },
2594         {
2595                 .name   = "zonerange",
2596                 .lname  = "Zone range",
2597                 .type   = FIO_OPT_STR_VAL,
2598                 .off1   = td_var_offset(zone_range),
2599                 .help   = "Give size of an IO zone",
2600                 .def    = "0",
2601                 .interval = 1024 * 1024,
2602                 .category = FIO_OPT_C_IO,
2603                 .group  = FIO_OPT_G_ZONE,
2604         },
2605         {
2606                 .name   = "zoneskip",
2607                 .lname  = "Zone skip",
2608                 .type   = FIO_OPT_STR_VAL,
2609                 .off1   = td_var_offset(zone_skip),
2610                 .help   = "Space between IO zones",
2611                 .def    = "0",
2612                 .interval = 1024 * 1024,
2613                 .category = FIO_OPT_C_IO,
2614                 .group  = FIO_OPT_G_ZONE,
2615         },
2616         {
2617                 .name   = "lockmem",
2618                 .lname  = "Lock memory",
2619                 .type   = FIO_OPT_STR_VAL,
2620                 .off1   = td_var_offset(lockmem),
2621                 .help   = "Lock down this amount of memory (per worker)",
2622                 .def    = "0",
2623                 .interval = 1024 * 1024,
2624                 .category = FIO_OPT_C_GENERAL,
2625                 .group  = FIO_OPT_G_INVALID,
2626         },
2627         {
2628                 .name   = "rwmixread",
2629                 .lname  = "Read/write mix read",
2630                 .type   = FIO_OPT_INT,
2631                 .cb     = str_rwmix_read_cb,
2632                 .maxval = 100,
2633                 .help   = "Percentage of mixed workload that is reads",
2634                 .def    = "50",
2635                 .interval = 5,
2636                 .inverse = "rwmixwrite",
2637                 .category = FIO_OPT_C_IO,
2638                 .group  = FIO_OPT_G_RWMIX,
2639         },
2640         {
2641                 .name   = "rwmixwrite",
2642                 .lname  = "Read/write mix write",
2643                 .type   = FIO_OPT_INT,
2644                 .cb     = str_rwmix_write_cb,
2645                 .maxval = 100,
2646                 .help   = "Percentage of mixed workload that is writes",
2647                 .def    = "50",
2648                 .interval = 5,
2649                 .inverse = "rwmixread",
2650                 .category = FIO_OPT_C_IO,
2651                 .group  = FIO_OPT_G_RWMIX,
2652         },
2653         {
2654                 .name   = "rwmixcycle",
2655                 .lname  = "Read/write mix cycle",
2656                 .type   = FIO_OPT_DEPRECATED,
2657                 .category = FIO_OPT_C_IO,
2658                 .group  = FIO_OPT_G_RWMIX,
2659         },
2660         {
2661                 .name   = "nice",
2662                 .lname  = "Nice",
2663                 .type   = FIO_OPT_INT,
2664                 .off1   = td_var_offset(nice),
2665                 .help   = "Set job CPU nice value",
2666                 .minval = -19,
2667                 .maxval = 20,
2668                 .def    = "0",
2669                 .interval = 1,
2670                 .category = FIO_OPT_C_GENERAL,
2671                 .group  = FIO_OPT_G_CRED,
2672         },
2673 #ifdef FIO_HAVE_IOPRIO
2674         {
2675                 .name   = "prio",
2676                 .lname  = "I/O nice priority",
2677                 .type   = FIO_OPT_INT,
2678                 .off1   = td_var_offset(ioprio),
2679                 .help   = "Set job IO priority value",
2680                 .minval = 0,
2681                 .maxval = 7,
2682                 .interval = 1,
2683                 .category = FIO_OPT_C_GENERAL,
2684                 .group  = FIO_OPT_G_CRED,
2685         },
2686         {
2687                 .name   = "prioclass",
2688                 .lname  = "I/O nice priority class",
2689                 .type   = FIO_OPT_INT,
2690                 .off1   = td_var_offset(ioprio_class),
2691                 .help   = "Set job IO priority class",
2692                 .minval = 0,
2693                 .maxval = 3,
2694                 .interval = 1,
2695                 .category = FIO_OPT_C_GENERAL,
2696                 .group  = FIO_OPT_G_CRED,
2697         },
2698 #endif
2699         {
2700                 .name   = "thinktime",
2701                 .lname  = "Thinktime",
2702                 .type   = FIO_OPT_INT,
2703                 .off1   = td_var_offset(thinktime),
2704                 .help   = "Idle time between IO buffers (usec)",
2705                 .def    = "0",
2706                 .category = FIO_OPT_C_IO,
2707                 .group  = FIO_OPT_G_THINKTIME,
2708         },
2709         {
2710                 .name   = "thinktime_spin",
2711                 .lname  = "Thinktime spin",
2712                 .type   = FIO_OPT_INT,
2713                 .off1   = td_var_offset(thinktime_spin),
2714                 .help   = "Start think time by spinning this amount (usec)",
2715                 .def    = "0",
2716                 .parent = "thinktime",
2717                 .hide   = 1,
2718                 .category = FIO_OPT_C_IO,
2719                 .group  = FIO_OPT_G_THINKTIME,
2720         },
2721         {
2722                 .name   = "thinktime_blocks",
2723                 .lname  = "Thinktime blocks",
2724                 .type   = FIO_OPT_INT,
2725                 .off1   = td_var_offset(thinktime_blocks),
2726                 .help   = "IO buffer period between 'thinktime'",
2727                 .def    = "1",
2728                 .parent = "thinktime",
2729                 .hide   = 1,
2730                 .category = FIO_OPT_C_IO,
2731                 .group  = FIO_OPT_G_THINKTIME,
2732         },
2733         {
2734                 .name   = "rate",
2735                 .lname  = "I/O rate",
2736                 .type   = FIO_OPT_INT,
2737                 .off1   = td_var_offset(rate[DDIR_READ]),
2738                 .off2   = td_var_offset(rate[DDIR_WRITE]),
2739                 .off3   = td_var_offset(rate[DDIR_TRIM]),
2740                 .help   = "Set bandwidth rate",
2741                 .category = FIO_OPT_C_IO,
2742                 .group  = FIO_OPT_G_RATE,
2743         },
2744         {
2745                 .name   = "ratemin",
2746                 .lname  = "I/O min rate",
2747                 .type   = FIO_OPT_INT,
2748                 .off1   = td_var_offset(ratemin[DDIR_READ]),
2749                 .off2   = td_var_offset(ratemin[DDIR_WRITE]),
2750                 .off3   = td_var_offset(ratemin[DDIR_TRIM]),
2751                 .help   = "Job must meet this rate or it will be shutdown",
2752                 .parent = "rate",
2753                 .hide   = 1,
2754                 .category = FIO_OPT_C_IO,
2755                 .group  = FIO_OPT_G_RATE,
2756         },
2757         {
2758                 .name   = "rate_iops",
2759                 .lname  = "I/O rate IOPS",
2760                 .type   = FIO_OPT_INT,
2761                 .off1   = td_var_offset(rate_iops[DDIR_READ]),
2762                 .off2   = td_var_offset(rate_iops[DDIR_WRITE]),
2763                 .off3   = td_var_offset(rate_iops[DDIR_TRIM]),
2764                 .help   = "Limit IO used to this number of IO operations/sec",
2765                 .hide   = 1,
2766                 .category = FIO_OPT_C_IO,
2767                 .group  = FIO_OPT_G_RATE,
2768         },
2769         {
2770                 .name   = "rate_iops_min",
2771                 .lname  = "I/O min rate IOPS",
2772                 .type   = FIO_OPT_INT,
2773                 .off1   = td_var_offset(rate_iops_min[DDIR_READ]),
2774                 .off2   = td_var_offset(rate_iops_min[DDIR_WRITE]),
2775                 .off3   = td_var_offset(rate_iops_min[DDIR_TRIM]),
2776                 .help   = "Job must meet this rate or it will be shut down",
2777                 .parent = "rate_iops",
2778                 .hide   = 1,
2779                 .category = FIO_OPT_C_IO,
2780                 .group  = FIO_OPT_G_RATE,
2781         },
2782         {
2783                 .name   = "ratecycle",
2784                 .lname  = "I/O rate cycle",
2785                 .type   = FIO_OPT_INT,
2786                 .off1   = td_var_offset(ratecycle),
2787                 .help   = "Window average for rate limits (msec)",
2788                 .def    = "1000",
2789                 .parent = "rate",
2790                 .hide   = 1,
2791                 .category = FIO_OPT_C_IO,
2792                 .group  = FIO_OPT_G_RATE,
2793         },
2794         {
2795                 .name   = "max_latency",
2796                 .type   = FIO_OPT_INT,
2797                 .off1   = td_var_offset(max_latency),
2798                 .help   = "Maximum tolerated IO latency (usec)",
2799                 .category = FIO_OPT_C_IO,
2800                 .group = FIO_OPT_G_LATPROF,
2801         },
2802         {
2803                 .name   = "latency_target",
2804                 .lname  = "Latency Target (usec)",
2805                 .type   = FIO_OPT_STR_VAL_TIME,
2806                 .off1   = td_var_offset(latency_target),
2807                 .help   = "Ramp to max queue depth supporting this latency",
2808                 .category = FIO_OPT_C_IO,
2809                 .group  = FIO_OPT_G_LATPROF,
2810         },
2811         {
2812                 .name   = "latency_window",
2813                 .lname  = "Latency Window (usec)",
2814                 .type   = FIO_OPT_STR_VAL_TIME,
2815                 .off1   = td_var_offset(latency_window),
2816                 .help   = "Time to sustain latency_target",
2817                 .category = FIO_OPT_C_IO,
2818                 .group  = FIO_OPT_G_LATPROF,
2819         },
2820         {
2821                 .name   = "latency_percentile",
2822                 .lname  = "Latency Percentile",
2823                 .type   = FIO_OPT_FLOAT_LIST,
2824                 .off1   = td_var_offset(latency_percentile),
2825                 .help   = "Percentile of IOs must be below latency_target",
2826                 .def    = "100",
2827                 .maxlen = 1,
2828                 .minfp  = 0.0,
2829                 .maxfp  = 100.0,
2830                 .category = FIO_OPT_C_IO,
2831                 .group  = FIO_OPT_G_LATPROF,
2832         },
2833         {
2834                 .name   = "invalidate",
2835                 .lname  = "Cache invalidate",
2836                 .type   = FIO_OPT_BOOL,
2837                 .off1   = td_var_offset(invalidate_cache),
2838                 .help   = "Invalidate buffer/page cache prior to running job",
2839                 .def    = "1",
2840                 .category = FIO_OPT_C_IO,
2841                 .group  = FIO_OPT_G_IO_TYPE,
2842         },
2843         {
2844                 .name   = "sync",
2845                 .lname  = "Synchronous I/O",
2846                 .type   = FIO_OPT_BOOL,
2847                 .off1   = td_var_offset(sync_io),
2848                 .help   = "Use O_SYNC for buffered writes",
2849                 .def    = "0",
2850                 .parent = "buffered",
2851                 .hide   = 1,
2852                 .category = FIO_OPT_C_IO,
2853                 .group  = FIO_OPT_G_IO_TYPE,
2854         },
2855         {
2856                 .name   = "create_serialize",
2857                 .lname  = "Create serialize",
2858                 .type   = FIO_OPT_BOOL,
2859                 .off1   = td_var_offset(create_serialize),
2860                 .help   = "Serialize creating of job files",
2861                 .def    = "1",
2862                 .category = FIO_OPT_C_FILE,
2863                 .group  = FIO_OPT_G_INVALID,
2864         },
2865         {
2866                 .name   = "create_fsync",
2867                 .lname  = "Create fsync",
2868                 .type   = FIO_OPT_BOOL,
2869                 .off1   = td_var_offset(create_fsync),
2870                 .help   = "fsync file after creation",
2871                 .def    = "1",
2872                 .category = FIO_OPT_C_FILE,
2873                 .group  = FIO_OPT_G_INVALID,
2874         },
2875         {
2876                 .name   = "create_on_open",
2877                 .lname  = "Create on open",
2878                 .type   = FIO_OPT_BOOL,
2879                 .off1   = td_var_offset(create_on_open),
2880                 .help   = "Create files when they are opened for IO",
2881                 .def    = "0",
2882                 .category = FIO_OPT_C_FILE,
2883                 .group  = FIO_OPT_G_INVALID,
2884         },
2885         {
2886                 .name   = "create_only",
2887                 .type   = FIO_OPT_BOOL,
2888                 .off1   = td_var_offset(create_only),
2889                 .help   = "Only perform file creation phase",
2890                 .category = FIO_OPT_C_FILE,
2891                 .def    = "0",
2892         },
2893         {
2894                 .name   = "pre_read",
2895                 .lname  = "Pre-read files",
2896                 .type   = FIO_OPT_BOOL,
2897                 .off1   = td_var_offset(pre_read),
2898                 .help   = "Pre-read files before starting official testing",
2899                 .def    = "0",
2900                 .category = FIO_OPT_C_FILE,
2901                 .group  = FIO_OPT_G_INVALID,
2902         },
2903 #ifdef FIO_HAVE_CPU_AFFINITY
2904         {
2905                 .name   = "cpumask",
2906                 .lname  = "CPU mask",
2907                 .type   = FIO_OPT_INT,
2908                 .cb     = str_cpumask_cb,
2909                 .help   = "CPU affinity mask",
2910                 .category = FIO_OPT_C_GENERAL,
2911                 .group  = FIO_OPT_G_CRED,
2912         },
2913         {
2914                 .name   = "cpus_allowed",
2915                 .lname  = "CPUs allowed",
2916                 .type   = FIO_OPT_STR,
2917                 .cb     = str_cpus_allowed_cb,
2918                 .help   = "Set CPUs allowed",
2919                 .category = FIO_OPT_C_GENERAL,
2920                 .group  = FIO_OPT_G_CRED,
2921         },
2922         {
2923                 .name   = "cpus_allowed_policy",
2924                 .lname  = "CPUs allowed distribution policy",
2925                 .type   = FIO_OPT_STR,
2926                 .off1   = td_var_offset(cpus_allowed_policy),
2927                 .help   = "Distribution policy for cpus_allowed",
2928                 .parent = "cpus_allowed",
2929                 .prio   = 1,
2930                 .posval = {
2931                           { .ival = "shared",
2932                             .oval = FIO_CPUS_SHARED,
2933                             .help = "Mask shared between threads",
2934                           },
2935                           { .ival = "split",
2936                             .oval = FIO_CPUS_SPLIT,
2937                             .help = "Mask split between threads",
2938                           },
2939                 },
2940                 .category = FIO_OPT_C_GENERAL,
2941                 .group  = FIO_OPT_G_CRED,
2942         },
2943 #endif
2944 #ifdef CONFIG_LIBNUMA
2945         {
2946                 .name   = "numa_cpu_nodes",
2947                 .type   = FIO_OPT_STR,
2948                 .cb     = str_numa_cpunodes_cb,
2949                 .help   = "NUMA CPU nodes bind",
2950                 .category = FIO_OPT_C_GENERAL,
2951                 .group  = FIO_OPT_G_INVALID,
2952         },
2953         {
2954                 .name   = "numa_mem_policy",
2955                 .type   = FIO_OPT_STR,
2956                 .cb     = str_numa_mpol_cb,
2957                 .help   = "NUMA memory policy setup",
2958                 .category = FIO_OPT_C_GENERAL,
2959                 .group  = FIO_OPT_G_INVALID,
2960         },
2961 #endif
2962         {
2963                 .name   = "end_fsync",
2964                 .lname  = "End fsync",
2965                 .type   = FIO_OPT_BOOL,
2966                 .off1   = td_var_offset(end_fsync),
2967                 .help   = "Include fsync at the end of job",
2968                 .def    = "0",
2969                 .category = FIO_OPT_C_FILE,
2970                 .group  = FIO_OPT_G_INVALID,
2971         },
2972         {
2973                 .name   = "fsync_on_close",
2974                 .lname  = "Fsync on close",
2975                 .type   = FIO_OPT_BOOL,
2976                 .off1   = td_var_offset(fsync_on_close),
2977                 .help   = "fsync files on close",
2978                 .def    = "0",
2979                 .category = FIO_OPT_C_FILE,
2980                 .group  = FIO_OPT_G_INVALID,
2981         },
2982         {
2983                 .name   = "unlink",
2984                 .lname  = "Unlink file",
2985                 .type   = FIO_OPT_BOOL,
2986                 .off1   = td_var_offset(unlink),
2987                 .help   = "Unlink created files after job has completed",
2988                 .def    = "0",
2989                 .category = FIO_OPT_C_FILE,
2990                 .group  = FIO_OPT_G_INVALID,
2991         },
2992         {
2993                 .name   = "exitall",
2994                 .lname  = "Exit-all on terminate",
2995                 .type   = FIO_OPT_STR_SET,
2996                 .cb     = str_exitall_cb,
2997                 .help   = "Terminate all jobs when one exits",
2998                 .category = FIO_OPT_C_GENERAL,
2999                 .group  = FIO_OPT_G_PROCESS,
3000         },
3001         {
3002                 .name   = "stonewall",
3003                 .lname  = "Wait for previous",
3004                 .alias  = "wait_for_previous",
3005                 .type   = FIO_OPT_STR_SET,
3006                 .off1   = td_var_offset(stonewall),
3007                 .help   = "Insert a hard barrier between this job and previous",
3008                 .category = FIO_OPT_C_GENERAL,
3009                 .group  = FIO_OPT_G_PROCESS,
3010         },
3011         {
3012                 .name   = "new_group",
3013                 .lname  = "New group",
3014                 .type   = FIO_OPT_STR_SET,
3015                 .off1   = td_var_offset(new_group),
3016                 .help   = "Mark the start of a new group (for reporting)",
3017                 .category = FIO_OPT_C_GENERAL,
3018                 .group  = FIO_OPT_G_PROCESS,
3019         },
3020         {
3021                 .name   = "thread",
3022                 .lname  = "Thread",
3023                 .type   = FIO_OPT_STR_SET,
3024                 .off1   = td_var_offset(use_thread),
3025                 .help   = "Use threads instead of processes",
3026                 .category = FIO_OPT_C_GENERAL,
3027                 .group  = FIO_OPT_G_PROCESS,
3028         },
3029         {
3030                 .name   = "write_bw_log",
3031                 .lname  = "Write bandwidth log",
3032                 .type   = FIO_OPT_STR_STORE,
3033                 .off1   = td_var_offset(bw_log_file),
3034                 .help   = "Write log of bandwidth during run",
3035                 .category = FIO_OPT_C_LOG,
3036                 .group  = FIO_OPT_G_INVALID,
3037         },
3038         {
3039                 .name   = "write_lat_log",
3040                 .lname  = "Write latency log",
3041                 .type   = FIO_OPT_STR_STORE,
3042                 .off1   = td_var_offset(lat_log_file),
3043                 .help   = "Write log of latency during run",
3044                 .category = FIO_OPT_C_LOG,
3045                 .group  = FIO_OPT_G_INVALID,
3046         },
3047         {
3048                 .name   = "write_iops_log",
3049                 .lname  = "Write IOPS log",
3050                 .type   = FIO_OPT_STR_STORE,
3051                 .off1   = td_var_offset(iops_log_file),
3052                 .help   = "Write log of IOPS during run",
3053                 .category = FIO_OPT_C_LOG,
3054                 .group  = FIO_OPT_G_INVALID,
3055         },
3056         {
3057                 .name   = "log_avg_msec",
3058                 .lname  = "Log averaging (msec)",
3059                 .type   = FIO_OPT_INT,
3060                 .off1   = td_var_offset(log_avg_msec),
3061                 .help   = "Average bw/iops/lat logs over this period of time",
3062                 .def    = "0",
3063                 .category = FIO_OPT_C_LOG,
3064                 .group  = FIO_OPT_G_INVALID,
3065         },
3066         {
3067                 .name   = "bwavgtime",
3068                 .lname  = "Bandwidth average time",
3069                 .type   = FIO_OPT_INT,
3070                 .off1   = td_var_offset(bw_avg_time),
3071                 .help   = "Time window over which to calculate bandwidth"
3072                           " (msec)",
3073                 .def    = "500",
3074                 .parent = "write_bw_log",
3075                 .hide   = 1,
3076                 .interval = 100,
3077                 .category = FIO_OPT_C_LOG,
3078                 .group  = FIO_OPT_G_INVALID,
3079         },
3080         {
3081                 .name   = "iopsavgtime",
3082                 .lname  = "IOPS average time",
3083                 .type   = FIO_OPT_INT,
3084                 .off1   = td_var_offset(iops_avg_time),
3085                 .help   = "Time window over which to calculate IOPS (msec)",
3086                 .def    = "500",
3087                 .parent = "write_iops_log",
3088                 .hide   = 1,
3089                 .interval = 100,
3090                 .category = FIO_OPT_C_LOG,
3091                 .group  = FIO_OPT_G_INVALID,
3092         },
3093         {
3094                 .name   = "group_reporting",
3095                 .lname  = "Group reporting",
3096                 .type   = FIO_OPT_STR_SET,
3097                 .off1   = td_var_offset(group_reporting),
3098                 .help   = "Do reporting on a per-group basis",
3099                 .category = FIO_OPT_C_STAT,
3100                 .group  = FIO_OPT_G_INVALID,
3101         },
3102         {
3103                 .name   = "zero_buffers",
3104                 .lname  = "Zero I/O buffers",
3105                 .type   = FIO_OPT_STR_SET,
3106                 .off1   = td_var_offset(zero_buffers),
3107                 .help   = "Init IO buffers to all zeroes",
3108                 .category = FIO_OPT_C_IO,
3109                 .group  = FIO_OPT_G_IO_BUF,
3110         },
3111         {
3112                 .name   = "refill_buffers",
3113                 .lname  = "Refill I/O buffers",
3114                 .type   = FIO_OPT_STR_SET,
3115                 .off1   = td_var_offset(refill_buffers),
3116                 .help   = "Refill IO buffers on every IO submit",
3117                 .category = FIO_OPT_C_IO,
3118                 .group  = FIO_OPT_G_IO_BUF,
3119         },
3120         {
3121                 .name   = "scramble_buffers",
3122                 .lname  = "Scramble I/O buffers",
3123                 .type   = FIO_OPT_BOOL,
3124                 .off1   = td_var_offset(scramble_buffers),
3125                 .help   = "Slightly scramble buffers on every IO submit",
3126                 .def    = "1",
3127                 .category = FIO_OPT_C_IO,
3128                 .group  = FIO_OPT_G_IO_BUF,
3129         },
3130         {
3131                 .name   = "buffer_pattern",
3132                 .lname  = "Buffer pattern",
3133                 .type   = FIO_OPT_STR,
3134                 .cb     = str_buffer_pattern_cb,
3135                 .help   = "Fill pattern for IO buffers",
3136                 .category = FIO_OPT_C_IO,
3137                 .group  = FIO_OPT_G_IO_BUF,
3138         },
3139         {
3140                 .name   = "buffer_compress_percentage",
3141                 .lname  = "Buffer compression percentage",
3142                 .type   = FIO_OPT_INT,
3143                 .cb     = str_buffer_compress_cb,
3144                 .maxval = 100,
3145                 .minval = 0,
3146                 .help   = "How compressible the buffer is (approximately)",
3147                 .interval = 5,
3148                 .category = FIO_OPT_C_IO,
3149                 .group  = FIO_OPT_G_IO_BUF,
3150         },
3151         {
3152                 .name   = "buffer_compress_chunk",
3153                 .lname  = "Buffer compression chunk size",
3154                 .type   = FIO_OPT_INT,
3155                 .off1   = td_var_offset(compress_chunk),
3156                 .parent = "buffer_compress_percentage",
3157                 .hide   = 1,
3158                 .help   = "Size of compressible region in buffer",
3159                 .interval = 256,
3160                 .category = FIO_OPT_C_IO,
3161                 .group  = FIO_OPT_G_IO_BUF,
3162         },
3163         {
3164                 .name   = "clat_percentiles",
3165                 .lname  = "Completion latency percentiles",
3166                 .type   = FIO_OPT_BOOL,
3167                 .off1   = td_var_offset(clat_percentiles),
3168                 .help   = "Enable the reporting of completion latency percentiles",
3169                 .def    = "1",
3170                 .category = FIO_OPT_C_STAT,
3171                 .group  = FIO_OPT_G_INVALID,
3172         },
3173         {
3174                 .name   = "percentile_list",
3175                 .lname  = "Completion latency percentile list",
3176                 .type   = FIO_OPT_FLOAT_LIST,
3177                 .off1   = td_var_offset(percentile_list),
3178                 .off2   = td_var_offset(percentile_precision),
3179                 .help   = "Specify a custom list of percentiles to report",
3180                 .def    = "1:5:10:20:30:40:50:60:70:80:90:95:99:99.5:99.9:99.95:99.99",
3181                 .maxlen = FIO_IO_U_LIST_MAX_LEN,
3182                 .minfp  = 0.0,
3183                 .maxfp  = 100.0,
3184                 .category = FIO_OPT_C_STAT,
3185                 .group  = FIO_OPT_G_INVALID,
3186         },
3187
3188 #ifdef FIO_HAVE_DISK_UTIL
3189         {
3190                 .name   = "disk_util",
3191                 .lname  = "Disk utilization",
3192                 .type   = FIO_OPT_BOOL,
3193                 .off1   = td_var_offset(do_disk_util),
3194                 .help   = "Log disk utilization statistics",
3195                 .def    = "1",
3196                 .category = FIO_OPT_C_STAT,
3197                 .group  = FIO_OPT_G_INVALID,
3198         },
3199 #endif
3200         {
3201                 .name   = "gtod_reduce",
3202                 .lname  = "Reduce gettimeofday() calls",
3203                 .type   = FIO_OPT_BOOL,
3204                 .help   = "Greatly reduce number of gettimeofday() calls",
3205                 .cb     = str_gtod_reduce_cb,
3206                 .def    = "0",
3207                 .hide_on_set = 1,
3208                 .category = FIO_OPT_C_STAT,
3209                 .group  = FIO_OPT_G_INVALID,
3210         },
3211         {
3212                 .name   = "disable_lat",
3213                 .lname  = "Disable all latency stats",
3214                 .type   = FIO_OPT_BOOL,
3215                 .off1   = td_var_offset(disable_lat),
3216                 .help   = "Disable latency numbers",
3217                 .parent = "gtod_reduce",
3218                 .hide   = 1,
3219                 .def    = "0",
3220                 .category = FIO_OPT_C_STAT,
3221                 .group  = FIO_OPT_G_INVALID,
3222         },
3223         {
3224                 .name   = "disable_clat",
3225                 .lname  = "Disable completion latency stats",
3226                 .type   = FIO_OPT_BOOL,
3227                 .off1   = td_var_offset(disable_clat),
3228                 .help   = "Disable completion latency numbers",
3229                 .parent = "gtod_reduce",
3230                 .hide   = 1,
3231                 .def    = "0",
3232                 .category = FIO_OPT_C_STAT,
3233                 .group  = FIO_OPT_G_INVALID,
3234         },
3235         {
3236                 .name   = "disable_slat",
3237                 .lname  = "Disable submission latency stats",
3238                 .type   = FIO_OPT_BOOL,
3239                 .off1   = td_var_offset(disable_slat),
3240                 .help   = "Disable submission latency numbers",
3241                 .parent = "gtod_reduce",
3242                 .hide   = 1,
3243                 .def    = "0",
3244                 .category = FIO_OPT_C_STAT,
3245                 .group  = FIO_OPT_G_INVALID,
3246         },
3247         {
3248                 .name   = "disable_bw_measurement",
3249                 .lname  = "Disable bandwidth stats",
3250                 .type   = FIO_OPT_BOOL,
3251                 .off1   = td_var_offset(disable_bw),
3252                 .help   = "Disable bandwidth logging",
3253                 .parent = "gtod_reduce",
3254                 .hide   = 1,
3255                 .def    = "0",
3256                 .category = FIO_OPT_C_STAT,
3257                 .group  = FIO_OPT_G_INVALID,
3258         },
3259         {
3260                 .name   = "gtod_cpu",
3261                 .lname  = "Dedicated gettimeofday() CPU",
3262                 .type   = FIO_OPT_INT,
3263                 .cb     = str_gtod_cpu_cb,
3264                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
3265                 .verify = gtod_cpu_verify,
3266                 .category = FIO_OPT_C_GENERAL,
3267                 .group  = FIO_OPT_G_CLOCK,
3268         },
3269         {
3270                 .name   = "unified_rw_reporting",
3271                 .type   = FIO_OPT_BOOL,
3272                 .off1   = td_var_offset(unified_rw_rep),
3273                 .help   = "Unify reporting across data direction",
3274                 .def    = "0",
3275                 .category = FIO_OPT_C_GENERAL,
3276                 .group  = FIO_OPT_G_INVALID,
3277         },
3278         {
3279                 .name   = "continue_on_error",
3280                 .lname  = "Continue on error",
3281                 .type   = FIO_OPT_STR,
3282                 .off1   = td_var_offset(continue_on_error),
3283                 .help   = "Continue on non-fatal errors during IO",
3284                 .def    = "none",
3285                 .category = FIO_OPT_C_GENERAL,
3286                 .group  = FIO_OPT_G_ERR,
3287                 .posval = {
3288                           { .ival = "none",
3289                             .oval = ERROR_TYPE_NONE,
3290                             .help = "Exit when an error is encountered",
3291                           },
3292                           { .ival = "read",
3293                             .oval = ERROR_TYPE_READ,
3294                             .help = "Continue on read errors only",
3295                           },
3296                           { .ival = "write",
3297                             .oval = ERROR_TYPE_WRITE,
3298                             .help = "Continue on write errors only",
3299                           },
3300                           { .ival = "io",
3301                             .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
3302                             .help = "Continue on any IO errors",
3303                           },
3304                           { .ival = "verify",
3305                             .oval = ERROR_TYPE_VERIFY,
3306                             .help = "Continue on verify errors only",
3307                           },
3308                           { .ival = "all",
3309                             .oval = ERROR_TYPE_ANY,
3310                             .help = "Continue on all io and verify errors",
3311                           },
3312                           { .ival = "0",
3313                             .oval = ERROR_TYPE_NONE,
3314                             .help = "Alias for 'none'",
3315                           },
3316                           { .ival = "1",
3317                             .oval = ERROR_TYPE_ANY,
3318                             .help = "Alias for 'all'",
3319                           },
3320                 },
3321         },
3322         {
3323                 .name   = "ignore_error",
3324                 .type   = FIO_OPT_STR,
3325                 .cb     = str_ignore_error_cb,
3326                 .help   = "Set a specific list of errors to ignore",
3327                 .parent = "rw",
3328                 .category = FIO_OPT_C_GENERAL,
3329                 .group  = FIO_OPT_G_ERR,
3330         },
3331         {
3332                 .name   = "error_dump",
3333                 .type   = FIO_OPT_BOOL,
3334                 .off1   = td_var_offset(error_dump),
3335                 .def    = "0",
3336                 .help   = "Dump info on each error",
3337                 .category = FIO_OPT_C_GENERAL,
3338                 .group  = FIO_OPT_G_ERR,
3339         },
3340         {
3341                 .name   = "profile",
3342                 .lname  = "Profile",
3343                 .type   = FIO_OPT_STR_STORE,
3344                 .off1   = td_var_offset(profile),
3345                 .help   = "Select a specific builtin performance test",
3346                 .category = FIO_OPT_C_PROFILE,
3347                 .group  = FIO_OPT_G_INVALID,
3348         },
3349         {
3350                 .name   = "cgroup",
3351                 .lname  = "Cgroup",
3352                 .type   = FIO_OPT_STR_STORE,
3353                 .off1   = td_var_offset(cgroup),
3354                 .help   = "Add job to cgroup of this name",
3355                 .category = FIO_OPT_C_GENERAL,
3356                 .group  = FIO_OPT_G_CGROUP,
3357         },
3358         {
3359                 .name   = "cgroup_nodelete",
3360                 .lname  = "Cgroup no-delete",