18 #include "crc/crc32c.h"
21 * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
23 static char *get_opt_postfix(const char *str)
25 char *p = strstr(str, ":");
31 strip_blank_front(&p);
36 static int converthexchartoint(char a)
56 static int bs_cmp(const void *p1, const void *p2)
58 const struct bssplit *bsp1 = p1;
59 const struct bssplit *bsp2 = p2;
61 return bsp1->perc < bsp2->perc;
64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
66 struct bssplit *bssplit;
67 unsigned int i, perc, perc_missing;
68 unsigned int max_bs, min_bs;
72 td->o.bssplit_nr[ddir] = 4;
73 bssplit = malloc(4 * sizeof(struct bssplit));
78 while ((fname = strsep(&str, ":")) != NULL) {
85 * grow struct buffer, if needed
87 if (i == td->o.bssplit_nr[ddir]) {
88 td->o.bssplit_nr[ddir] <<= 1;
89 bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
90 * sizeof(struct bssplit));
93 perc_str = strstr(fname, "/");
97 perc = atoi(perc_str);
105 if (str_to_decimal(fname, &val, 1, td)) {
106 log_err("fio: bssplit conversion failed\n");
117 bssplit[i].perc = perc;
121 td->o.bssplit_nr[ddir] = i;
124 * Now check if the percentages add up, and how much is missing
126 perc = perc_missing = 0;
127 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
128 struct bssplit *bsp = &bssplit[i];
130 if (bsp->perc == (unsigned char) -1)
137 log_err("fio: bssplit percentages add to more than 100%%\n");
142 * If values didn't have a percentage set, divide the remains between
146 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
147 struct bssplit *bsp = &bssplit[i];
149 if (bsp->perc == (unsigned char) -1)
150 bsp->perc = (100 - perc) / perc_missing;
154 td->o.min_bs[ddir] = min_bs;
155 td->o.max_bs[ddir] = max_bs;
158 * now sort based on percentages, for ease of lookup
160 qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
161 td->o.bssplit[ddir] = bssplit;
165 static int str_bssplit_cb(void *data, const char *input)
167 struct thread_data *td = data;
168 char *str, *p, *odir;
171 p = str = strdup(input);
173 strip_blank_front(&str);
174 strip_blank_end(str);
176 odir = strchr(str, ',');
178 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
181 ret = bssplit_ddir(td, DDIR_READ, str);
188 ret = bssplit_ddir(td, DDIR_READ, str);
190 ret = bssplit_ddir(td, DDIR_WRITE, op);
199 static int str_rw_cb(void *data, const char *str)
201 struct thread_data *td = data;
202 char *nr = get_opt_postfix(str);
204 td->o.ddir_seq_nr = 1;
205 td->o.ddir_seq_add = 0;
211 td->o.ddir_seq_nr = atoi(nr);
215 if (str_to_decimal(nr, &val, 1, td)) {
216 log_err("fio: rw postfix parsing failed\n");
221 td->o.ddir_seq_add = val;
228 static int str_mem_cb(void *data, const char *mem)
230 struct thread_data *td = data;
232 if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
233 td->mmapfile = get_opt_postfix(mem);
234 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
235 log_err("fio: mmaphuge:/path/to/file\n");
243 static int str_verify_cb(void *data, const char *mem)
245 struct thread_data *td = data;
247 if (td->o.verify == VERIFY_CRC32C_INTEL ||
248 td->o.verify == VERIFY_CRC32C) {
249 crc32c_intel_probe();
255 static int fio_clock_source_cb(void *data, const char *str)
257 struct thread_data *td = data;
259 fio_clock_source = td->o.clocksource;
264 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
270 static int str_rwmix_read_cb(void *data, unsigned long long *val)
272 struct thread_data *td = data;
274 td->o.rwmix[DDIR_READ] = *val;
275 td->o.rwmix[DDIR_WRITE] = 100 - *val;
279 static int str_rwmix_write_cb(void *data, unsigned long long *val)
281 struct thread_data *td = data;
283 td->o.rwmix[DDIR_WRITE] = *val;
284 td->o.rwmix[DDIR_READ] = 100 - *val;
288 #ifdef FIO_HAVE_IOPRIO
289 static int str_prioclass_cb(void *data, unsigned long long *val)
291 struct thread_data *td = data;
295 * mask off old class bits, str_prio_cb() may have set a default class
297 mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
300 td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
305 static int str_prio_cb(void *data, unsigned long long *val)
307 struct thread_data *td = data;
312 * If no class is set, assume BE
314 if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
315 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
322 static int str_exitall_cb(void)
324 exitall_on_terminate = 1;
328 #ifdef FIO_HAVE_CPU_AFFINITY
329 static int str_cpumask_cb(void *data, unsigned long long *val)
331 struct thread_data *td = data;
336 ret = fio_cpuset_init(&td->o.cpumask);
338 log_err("fio: cpuset_init failed\n");
339 td_verror(td, ret, "fio_cpuset_init");
343 max_cpu = cpus_online();
345 for (i = 0; i < sizeof(int) * 8; i++) {
346 if ((1 << i) & *val) {
348 log_err("fio: CPU %d too large (max=%ld)\n", i,
352 dprint(FD_PARSE, "set cpu allowed %d\n", i);
353 fio_cpu_set(&td->o.cpumask, i);
357 td->o.cpumask_set = 1;
361 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
368 ret = fio_cpuset_init(mask);
370 log_err("fio: cpuset_init failed\n");
371 td_verror(td, ret, "fio_cpuset_init");
375 p = str = strdup(input);
377 strip_blank_front(&str);
378 strip_blank_end(str);
380 max_cpu = cpus_online();
382 while ((cpu = strsep(&str, ",")) != NULL) {
391 while ((cpu2 = strsep(&str2, "-")) != NULL) {
401 while (icpu <= icpu2) {
402 if (icpu >= FIO_MAX_CPUS) {
403 log_err("fio: your OS only supports up to"
404 " %d CPUs\n", (int) FIO_MAX_CPUS);
408 if (icpu > max_cpu) {
409 log_err("fio: CPU %d too large (max=%ld)\n",
415 dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
416 fio_cpu_set(mask, icpu);
425 td->o.cpumask_set = 1;
429 static int str_cpus_allowed_cb(void *data, const char *input)
431 struct thread_data *td = data;
434 ret = set_cpus_allowed(td, &td->o.cpumask, input);
436 td->o.cpumask_set = 1;
441 static int str_verify_cpus_allowed_cb(void *data, const char *input)
443 struct thread_data *td = data;
446 ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
448 td->o.verify_cpumask_set = 1;
455 static int str_verify_trim_cb(void *data, unsigned long long *val)
457 struct thread_data *td = data;
459 td->o.trim_percentage = *val;
464 static int str_fst_cb(void *data, const char *str)
466 struct thread_data *td = data;
467 char *nr = get_opt_postfix(str);
469 td->file_service_nr = 1;
471 td->file_service_nr = atoi(nr);
478 #ifdef FIO_HAVE_SYNC_FILE_RANGE
479 static int str_sfr_cb(void *data, const char *str)
481 struct thread_data *td = data;
482 char *nr = get_opt_postfix(str);
484 td->sync_file_range_nr = 1;
486 td->sync_file_range_nr = atoi(nr);
494 static int check_dir(struct thread_data *td, char *fname)
497 char file[PATH_MAX], *dir;
500 if (td->o.directory) {
501 strcpy(file, td->o.directory);
506 sprintf(file + elen, "%s", fname);
512 * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
513 * yet, so we can't do this check right here...
515 if (lstat(dir, &sb) < 0) {
518 log_err("fio: %s is not a directory\n", dir);
519 td_verror(td, ret, "lstat");
523 if (!S_ISDIR(sb.st_mode)) {
524 log_err("fio: %s is not a directory\n", dir);
534 * Return next file in the string. Files are separated with ':'. If the ':'
535 * is escaped with a '\', then that ':' is part of the filename and does not
536 * indicate a new file.
538 static char *get_next_file_name(char **ptr)
543 if (!str || !strlen(str))
549 * No colon, we are done
551 p = strchr(str, ':');
558 * We got a colon, but it's the first character. Skip and
566 if (*(p - 1) != '\\') {
572 memmove(p - 1, p, strlen(p) + 1);
579 static int str_filename_cb(void *data, const char *input)
581 struct thread_data *td = data;
582 char *fname, *str, *p;
584 p = str = strdup(input);
586 strip_blank_front(&str);
587 strip_blank_end(str);
589 if (!td->files_index)
592 while ((fname = get_next_file_name(&str)) != NULL) {
595 if (check_dir(td, fname)) {
607 static int str_directory_cb(void *data, const char fio_unused *str)
609 struct thread_data *td = data;
612 if (lstat(td->o.directory, &sb) < 0) {
615 log_err("fio: %s is not a directory\n", td->o.directory);
616 td_verror(td, ret, "lstat");
619 if (!S_ISDIR(sb.st_mode)) {
620 log_err("fio: %s is not a directory\n", td->o.directory);
627 static int str_opendir_cb(void *data, const char fio_unused *str)
629 struct thread_data *td = data;
631 if (!td->files_index)
634 return add_dir_files(td, td->o.opendir);
637 static int str_verify_offset_cb(void *data, unsigned long long *off)
639 struct thread_data *td = data;
641 if (*off && *off < sizeof(struct verify_header)) {
642 log_err("fio: verify_offset too small\n");
646 td->o.verify_offset = *off;
650 static int str_verify_pattern_cb(void *data, const char *input)
652 struct thread_data *td = data;
654 int i = 0, j = 0, len, k, base = 10;
657 loc1 = strstr(input, "0x");
658 loc2 = strstr(input, "0X");
661 off = strtol(input, NULL, base);
662 if (off != LONG_MAX || errno != ERANGE) {
664 td->o.verify_pattern[i] = off & 0xff;
673 j = loc1 - input + 2;
675 j = loc2 - input + 2;
678 if (len - j < MAX_PATTERN_SIZE * 2) {
680 off = converthexchartoint(input[k--]);
682 off += (converthexchartoint(input[k--])
684 td->o.verify_pattern[i++] = (char) off;
690 * Fill the pattern all the way to the end. This greatly reduces
691 * the number of memcpy's we have to do when verifying the IO.
693 while (i > 1 && i * 2 <= MAX_PATTERN_SIZE) {
694 memcpy(&td->o.verify_pattern[i], &td->o.verify_pattern[0], i);
699 * The code in verify_io_u_pattern assumes a single byte pattern
700 * fills the whole verify pattern buffer.
702 memset(td->o.verify_pattern, td->o.verify_pattern[0],
706 td->o.verify_pattern_bytes = i;
709 * VERIFY_META could already be set
711 if (td->o.verify == VERIFY_NONE)
712 td->o.verify = VERIFY_PATTERN;
717 static int str_lockfile_cb(void *data, const char *str)
719 struct thread_data *td = data;
720 char *nr = get_opt_postfix(str);
722 td->o.lockfile_batch = 1;
724 td->o.lockfile_batch = atoi(nr);
731 static int str_write_bw_log_cb(void *data, const char *str)
733 struct thread_data *td = data;
736 td->o.bw_log_file = strdup(str);
738 td->o.write_bw_log = 1;
742 static int str_write_lat_log_cb(void *data, const char *str)
744 struct thread_data *td = data;
747 td->o.lat_log_file = strdup(str);
749 td->o.write_lat_log = 1;
753 static int str_write_iops_log_cb(void *data, const char *str)
755 struct thread_data *td = data;
758 td->o.iops_log_file = strdup(str);
760 td->o.write_iops_log = 1;
764 static int str_gtod_reduce_cb(void *data, int *il)
766 struct thread_data *td = data;
769 td->o.disable_lat = !!val;
770 td->o.disable_clat = !!val;
771 td->o.disable_slat = !!val;
772 td->o.disable_bw = !!val;
773 td->o.clat_percentiles = !val;
775 td->tv_cache_mask = 63;
780 static int str_gtod_cpu_cb(void *data, long long *il)
782 struct thread_data *td = data;
785 td->o.gtod_cpu = val;
786 td->o.gtod_offload = 1;
790 static int str_size_cb(void *data, unsigned long long *__val)
792 struct thread_data *td = data;
793 unsigned long long v = *__val;
795 if (parse_is_percent(v)) {
797 td->o.size_percent = -1ULL - v;
804 static int rw_verify(struct fio_option *o, void *data)
806 struct thread_data *td = data;
808 if (read_only && td_write(td)) {
809 log_err("fio: job <%s> has write bit set, but fio is in"
810 " read-only mode\n", td->o.name);
817 static int gtod_cpu_verify(struct fio_option *o, void *data)
819 #ifndef FIO_HAVE_CPU_AFFINITY
820 struct thread_data *td = data;
822 if (td->o.gtod_cpu) {
823 log_err("fio: platform must support CPU affinity for"
824 "gettimeofday() offloading\n");
832 static int kb_base_verify(struct fio_option *o, void *data)
834 struct thread_data *td = data;
836 if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
837 log_err("fio: kb_base set to nonsensical value: %u\n",
846 * Map of job/command line options
848 static struct fio_option options[FIO_MAX_OPTS] = {
850 .name = "description",
851 .type = FIO_OPT_STR_STORE,
852 .off1 = td_var_offset(description),
853 .help = "Text job description",
857 .type = FIO_OPT_STR_STORE,
858 .off1 = td_var_offset(name),
859 .help = "Name of this job",
863 .type = FIO_OPT_STR_STORE,
864 .off1 = td_var_offset(directory),
865 .cb = str_directory_cb,
866 .help = "Directory to store files in",
870 .type = FIO_OPT_STR_STORE,
871 .off1 = td_var_offset(filename),
872 .cb = str_filename_cb,
873 .prio = -1, /* must come after "directory" */
874 .help = "File(s) to use for the workload",
879 .off1 = td_var_offset(kb_base),
880 .verify = kb_base_verify,
883 .help = "How many bytes per KB for reporting (1000 or 1024)",
888 .cb = str_lockfile_cb,
889 .off1 = td_var_offset(file_lock_mode),
890 .help = "Lock file when doing IO to it",
891 .parent = "filename",
895 .oval = FILE_LOCK_NONE,
896 .help = "No file locking",
898 { .ival = "exclusive",
899 .oval = FILE_LOCK_EXCLUSIVE,
900 .help = "Exclusive file lock",
904 .oval = FILE_LOCK_READWRITE,
905 .help = "Read vs write lock",
911 .type = FIO_OPT_STR_STORE,
912 .off1 = td_var_offset(opendir),
913 .cb = str_opendir_cb,
914 .help = "Recursively add files from this directory and down",
918 .alias = "readwrite",
921 .off1 = td_var_offset(td_ddir),
922 .help = "IO direction",
927 .oval = TD_DDIR_READ,
928 .help = "Sequential read",
931 .oval = TD_DDIR_WRITE,
932 .help = "Sequential write",
934 { .ival = "randread",
935 .oval = TD_DDIR_RANDREAD,
936 .help = "Random read",
938 { .ival = "randwrite",
939 .oval = TD_DDIR_RANDWRITE,
940 .help = "Random write",
944 .help = "Sequential read and write mix",
947 .oval = TD_DDIR_RANDRW,
948 .help = "Random read and write mix"
953 .name = "rw_sequencer",
955 .off1 = td_var_offset(rw_seq),
956 .help = "IO offset generator modifier",
959 { .ival = "sequential",
961 .help = "Generate sequential offsets",
963 { .ival = "identical",
964 .oval = RW_SEQ_IDENT,
965 .help = "Generate identical offsets",
972 .type = FIO_OPT_STR_STORE,
973 .off1 = td_var_offset(ioengine),
974 .help = "IO engine to use",
975 .def = FIO_PREFERRED_ENGINE,
978 .help = "Use read/write",
981 .help = "Use pread/pwrite",
984 .help = "Use readv/writev",
986 #ifdef FIO_HAVE_LIBAIO
988 .help = "Linux native asynchronous IO",
991 #ifdef FIO_HAVE_POSIXAIO
992 { .ival = "posixaio",
993 .help = "POSIX asynchronous IO",
996 #ifdef FIO_HAVE_SOLARISAIO
997 { .ival = "solarisaio",
998 .help = "Solaris native asynchronous IO",
1001 #ifdef FIO_HAVE_WINDOWSAIO
1002 { .ival = "windowsaio",
1003 .help = "Windows native asynchronous IO"
1007 .help = "Memory mapped IO"
1009 #ifdef FIO_HAVE_SPLICE
1011 .help = "splice/vmsplice based IO",
1013 { .ival = "netsplice",
1014 .help = "splice/vmsplice to/from the network",
1017 #ifdef FIO_HAVE_SGIO
1019 .help = "SCSI generic v3 IO",
1023 .help = "Testing engine (no data transfer)",
1026 .help = "Network IO",
1028 #ifdef FIO_HAVE_SYSLET
1029 { .ival = "syslet-rw",
1030 .help = "syslet enabled async pread/pwrite IO",
1034 .help = "CPU cycle burner engine",
1036 #ifdef FIO_HAVE_GUASI
1038 .help = "GUASI IO engine",
1041 #ifdef FIO_HAVE_BINJECT
1042 { .ival = "binject",
1043 .help = "binject direct inject block engine",
1046 #ifdef FIO_HAVE_RDMA
1048 .help = "RDMA IO engine",
1051 { .ival = "external",
1052 .help = "Load external engine (append name)",
1058 .type = FIO_OPT_INT,
1059 .off1 = td_var_offset(iodepth),
1060 .help = "Number of IO buffers to keep in flight",
1065 .name = "iodepth_batch",
1066 .alias = "iodepth_batch_submit",
1067 .type = FIO_OPT_INT,
1068 .off1 = td_var_offset(iodepth_batch),
1069 .help = "Number of IO buffers to submit in one go",
1070 .parent = "iodepth",
1075 .name = "iodepth_batch_complete",
1076 .type = FIO_OPT_INT,
1077 .off1 = td_var_offset(iodepth_batch_complete),
1078 .help = "Number of IO buffers to retrieve in one go",
1079 .parent = "iodepth",
1084 .name = "iodepth_low",
1085 .type = FIO_OPT_INT,
1086 .off1 = td_var_offset(iodepth_low),
1087 .help = "Low water mark for queuing depth",
1088 .parent = "iodepth",
1092 .type = FIO_OPT_STR_VAL,
1094 .help = "Total size of device or files",
1097 .name = "fill_device",
1099 .type = FIO_OPT_BOOL,
1100 .off1 = td_var_offset(fill_device),
1101 .help = "Write until an ENOSPC error occurs",
1106 .type = FIO_OPT_STR_VAL,
1107 .off1 = td_var_offset(file_size_low),
1108 .off2 = td_var_offset(file_size_high),
1110 .help = "Size of individual files",
1114 .alias = "fileoffset",
1115 .type = FIO_OPT_STR_VAL,
1116 .off1 = td_var_offset(start_offset),
1117 .help = "Start IO from this offset",
1122 .alias = "blocksize",
1123 .type = FIO_OPT_INT,
1124 .off1 = td_var_offset(bs[DDIR_READ]),
1125 .off2 = td_var_offset(bs[DDIR_WRITE]),
1127 .help = "Block size unit",
1133 .alias = "blockalign",
1134 .type = FIO_OPT_INT,
1135 .off1 = td_var_offset(ba[DDIR_READ]),
1136 .off2 = td_var_offset(ba[DDIR_WRITE]),
1138 .help = "IO block offset alignment",
1143 .alias = "blocksize_range",
1144 .type = FIO_OPT_RANGE,
1145 .off1 = td_var_offset(min_bs[DDIR_READ]),
1146 .off2 = td_var_offset(max_bs[DDIR_READ]),
1147 .off3 = td_var_offset(min_bs[DDIR_WRITE]),
1148 .off4 = td_var_offset(max_bs[DDIR_WRITE]),
1150 .help = "Set block size range (in more detail than bs)",
1155 .type = FIO_OPT_STR,
1156 .cb = str_bssplit_cb,
1157 .help = "Set a specific mix of block sizes",
1161 .name = "bs_unaligned",
1162 .alias = "blocksize_unaligned",
1163 .type = FIO_OPT_STR_SET,
1164 .off1 = td_var_offset(bs_unaligned),
1165 .help = "Don't sector align IO buffer sizes",
1169 .name = "randrepeat",
1170 .type = FIO_OPT_BOOL,
1171 .off1 = td_var_offset(rand_repeatable),
1172 .help = "Use repeatable random IO pattern",
1177 .name = "use_os_rand",
1178 .type = FIO_OPT_BOOL,
1179 .off1 = td_var_offset(use_os_rand),
1180 .help = "Set to use OS random generator",
1185 .name = "norandommap",
1186 .type = FIO_OPT_STR_SET,
1187 .off1 = td_var_offset(norandommap),
1188 .help = "Accept potential duplicate random blocks",
1192 .name = "softrandommap",
1193 .type = FIO_OPT_BOOL,
1194 .off1 = td_var_offset(softrandommap),
1195 .help = "Set norandommap if randommap allocation fails",
1196 .parent = "norandommap",
1201 .alias = "nr_files",
1202 .type = FIO_OPT_INT,
1203 .off1 = td_var_offset(nr_files),
1204 .help = "Split job workload between this number of files",
1208 .name = "openfiles",
1209 .type = FIO_OPT_INT,
1210 .off1 = td_var_offset(open_files),
1211 .help = "Number of files to keep open at the same time",
1214 .name = "file_service_type",
1215 .type = FIO_OPT_STR,
1217 .off1 = td_var_offset(file_service_type),
1218 .help = "How to select which file to service next",
1219 .def = "roundrobin",
1222 .oval = FIO_FSERVICE_RANDOM,
1223 .help = "Choose a file at random",
1225 { .ival = "roundrobin",
1226 .oval = FIO_FSERVICE_RR,
1227 .help = "Round robin select files",
1229 { .ival = "sequential",
1230 .oval = FIO_FSERVICE_SEQ,
1231 .help = "Finish one file before moving to the next",
1234 .parent = "nrfiles",
1236 #ifdef FIO_HAVE_FALLOCATE
1238 .name = "fallocate",
1239 .type = FIO_OPT_STR,
1240 .off1 = td_var_offset(fallocate_mode),
1241 .help = "Whether pre-allocation is performed when laying out files",
1245 .oval = FIO_FALLOCATE_NONE,
1246 .help = "Do not pre-allocate space",
1249 .oval = FIO_FALLOCATE_POSIX,
1250 .help = "Use posix_fallocate()",
1252 #ifdef FIO_HAVE_LINUX_FALLOCATE
1254 .oval = FIO_FALLOCATE_KEEP_SIZE,
1255 .help = "Use fallocate(..., FALLOC_FL_KEEP_SIZE, ...)",
1258 /* Compatibility with former boolean values */
1260 .oval = FIO_FALLOCATE_NONE,
1261 .help = "Alias for 'none'",
1264 .oval = FIO_FALLOCATE_POSIX,
1265 .help = "Alias for 'posix'",
1269 #endif /* FIO_HAVE_FALLOCATE */
1271 .name = "fadvise_hint",
1272 .type = FIO_OPT_BOOL,
1273 .off1 = td_var_offset(fadvise_hint),
1274 .help = "Use fadvise() to advise the kernel on IO pattern",
1279 .type = FIO_OPT_INT,
1280 .off1 = td_var_offset(fsync_blocks),
1281 .help = "Issue fsync for writes every given number of blocks",
1285 .name = "fdatasync",
1286 .type = FIO_OPT_INT,
1287 .off1 = td_var_offset(fdatasync_blocks),
1288 .help = "Issue fdatasync for writes every given number of blocks",
1292 .name = "write_barrier",
1293 .type = FIO_OPT_INT,
1294 .off1 = td_var_offset(barrier_blocks),
1295 .help = "Make every Nth write a barrier write",
1298 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1300 .name = "sync_file_range",
1302 { .ival = "wait_before",
1303 .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1304 .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1308 .oval = SYNC_FILE_RANGE_WRITE,
1309 .help = "SYNC_FILE_RANGE_WRITE",
1313 .ival = "wait_after",
1314 .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1315 .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1319 .type = FIO_OPT_STR_MULTI,
1321 .off1 = td_var_offset(sync_file_range),
1322 .help = "Use sync_file_range()",
1327 .type = FIO_OPT_BOOL,
1328 .off1 = td_var_offset(odirect),
1329 .help = "Use O_DIRECT IO (negates buffered)",
1334 .type = FIO_OPT_BOOL,
1335 .off1 = td_var_offset(odirect),
1337 .help = "Use buffered IO (negates direct)",
1341 .name = "overwrite",
1342 .type = FIO_OPT_BOOL,
1343 .off1 = td_var_offset(overwrite),
1344 .help = "When writing, set whether to overwrite current data",
1349 .type = FIO_OPT_INT,
1350 .off1 = td_var_offset(loops),
1351 .help = "Number of times to run the job",
1356 .type = FIO_OPT_INT,
1357 .off1 = td_var_offset(numjobs),
1358 .help = "Duplicate this job this many times",
1362 .name = "startdelay",
1363 .type = FIO_OPT_STR_VAL_TIME,
1364 .off1 = td_var_offset(start_delay),
1365 .help = "Only start job when this period has passed",
1371 .type = FIO_OPT_STR_VAL_TIME,
1372 .off1 = td_var_offset(timeout),
1373 .help = "Stop workload when this amount of time has passed",
1377 .name = "time_based",
1378 .type = FIO_OPT_STR_SET,
1379 .off1 = td_var_offset(time_based),
1380 .help = "Keep running until runtime/timeout is met",
1383 .name = "ramp_time",
1384 .type = FIO_OPT_STR_VAL_TIME,
1385 .off1 = td_var_offset(ramp_time),
1386 .help = "Ramp up time before measuring performance",
1389 .name = "clocksource",
1390 .type = FIO_OPT_STR,
1391 .cb = fio_clock_source_cb,
1392 .off1 = td_var_offset(clocksource),
1393 .help = "What type of timing source to use",
1395 { .ival = "gettimeofday",
1397 .help = "Use gettimeofday(2) for timing",
1399 { .ival = "clock_gettime",
1400 .oval = CS_CGETTIME,
1401 .help = "Use clock_gettime(2) for timing",
1403 #ifdef ARCH_HAVE_CPU_CLOCK
1405 .oval = CS_CPUCLOCK,
1406 .help = "Use CPU private clock",
1414 .type = FIO_OPT_STR,
1416 .off1 = td_var_offset(mem_type),
1417 .help = "Backing type for IO buffers",
1422 .help = "Use malloc(3) for IO buffers",
1426 .help = "Use shared memory segments for IO buffers",
1428 #ifdef FIO_HAVE_HUGETLB
1429 { .ival = "shmhuge",
1430 .oval = MEM_SHMHUGE,
1431 .help = "Like shm, but use huge pages",
1436 .help = "Use mmap(2) (file or anon) for IO buffers",
1438 #ifdef FIO_HAVE_HUGETLB
1439 { .ival = "mmaphuge",
1440 .oval = MEM_MMAPHUGE,
1441 .help = "Like mmap, but use huge pages",
1447 .name = "iomem_align",
1448 .alias = "mem_align",
1449 .type = FIO_OPT_INT,
1450 .off1 = td_var_offset(mem_align),
1452 .help = "IO memory buffer offset alignment",
1458 .type = FIO_OPT_STR,
1459 .off1 = td_var_offset(verify),
1460 .help = "Verify data written",
1461 .cb = str_verify_cb,
1465 .oval = VERIFY_NONE,
1466 .help = "Don't do IO verification",
1470 .help = "Use md5 checksums for verification",
1473 .oval = VERIFY_CRC64,
1474 .help = "Use crc64 checksums for verification",
1477 .oval = VERIFY_CRC32,
1478 .help = "Use crc32 checksums for verification",
1480 { .ival = "crc32c-intel",
1481 .oval = VERIFY_CRC32C,
1482 .help = "Use crc32c checksums for verification (hw assisted, if available)",
1485 .oval = VERIFY_CRC32C,
1486 .help = "Use crc32c checksums for verification (hw assisted, if available)",
1489 .oval = VERIFY_CRC16,
1490 .help = "Use crc16 checksums for verification",
1493 .oval = VERIFY_CRC7,
1494 .help = "Use crc7 checksums for verification",
1497 .oval = VERIFY_SHA1,
1498 .help = "Use sha1 checksums for verification",
1501 .oval = VERIFY_SHA256,
1502 .help = "Use sha256 checksums for verification",
1505 .oval = VERIFY_SHA512,
1506 .help = "Use sha512 checksums for verification",
1509 .oval = VERIFY_META,
1510 .help = "Use io information",
1514 .oval = VERIFY_NULL,
1515 .help = "Pretend to verify",
1520 .name = "do_verify",
1521 .type = FIO_OPT_BOOL,
1522 .off1 = td_var_offset(do_verify),
1523 .help = "Run verification stage after write",
1528 .name = "verifysort",
1529 .type = FIO_OPT_BOOL,
1530 .off1 = td_var_offset(verifysort),
1531 .help = "Sort written verify blocks for read back",
1536 .name = "verify_interval",
1537 .type = FIO_OPT_INT,
1538 .off1 = td_var_offset(verify_interval),
1539 .minval = 2 * sizeof(struct verify_header),
1540 .help = "Store verify buffer header every N bytes",
1544 .name = "verify_offset",
1545 .type = FIO_OPT_INT,
1546 .help = "Offset verify header location by N bytes",
1548 .cb = str_verify_offset_cb,
1552 .name = "verify_pattern",
1553 .type = FIO_OPT_STR,
1554 .cb = str_verify_pattern_cb,
1555 .help = "Fill pattern for IO buffers",
1559 .name = "verify_fatal",
1560 .type = FIO_OPT_BOOL,
1561 .off1 = td_var_offset(verify_fatal),
1563 .help = "Exit on a single verify failure, don't continue",
1567 .name = "verify_dump",
1568 .type = FIO_OPT_BOOL,
1569 .off1 = td_var_offset(verify_dump),
1571 .help = "Dump contents of good and bad blocks on failure",
1575 .name = "verify_async",
1576 .type = FIO_OPT_INT,
1577 .off1 = td_var_offset(verify_async),
1579 .help = "Number of async verifier threads to use",
1583 .name = "verify_backlog",
1584 .type = FIO_OPT_STR_VAL,
1585 .off1 = td_var_offset(verify_backlog),
1586 .help = "Verify after this number of blocks are written",
1590 .name = "verify_backlog_batch",
1591 .type = FIO_OPT_INT,
1592 .off1 = td_var_offset(verify_batch),
1593 .help = "Verify this number of IO blocks",
1596 #ifdef FIO_HAVE_CPU_AFFINITY
1598 .name = "verify_async_cpus",
1599 .type = FIO_OPT_STR,
1600 .cb = str_verify_cpus_allowed_cb,
1601 .help = "Set CPUs allowed for async verify threads",
1602 .parent = "verify_async",
1605 #ifdef FIO_HAVE_TRIM
1607 .name = "trim_percentage",
1608 .type = FIO_OPT_INT,
1609 .cb = str_verify_trim_cb,
1611 .help = "Number of verify blocks to discard/trim",
1616 .name = "trim_verify_zero",
1617 .type = FIO_OPT_INT,
1618 .help = "Verify that trim/discarded blocks are returned as zeroes",
1619 .off1 = td_var_offset(trim_zero),
1620 .parent = "trim_percentage",
1624 .name = "trim_backlog",
1625 .type = FIO_OPT_STR_VAL,
1626 .off1 = td_var_offset(trim_backlog),
1627 .help = "Trim after this number of blocks are written",
1628 .parent = "trim_percentage",
1631 .name = "trim_backlog_batch",
1632 .type = FIO_OPT_INT,
1633 .off1 = td_var_offset(trim_batch),
1634 .help = "Trim this number of IO blocks",
1635 .parent = "trim_percentage",
1639 .name = "write_iolog",
1640 .type = FIO_OPT_STR_STORE,
1641 .off1 = td_var_offset(write_iolog_file),
1642 .help = "Store IO pattern to file",
1645 .name = "read_iolog",
1646 .type = FIO_OPT_STR_STORE,
1647 .off1 = td_var_offset(read_iolog_file),
1648 .help = "Playback IO pattern from file",
1651 .name = "replay_no_stall",
1652 .type = FIO_OPT_INT,
1653 .off1 = td_var_offset(no_stall),
1655 .parent = "read_iolog",
1656 .help = "Playback IO pattern file as fast as possible without stalls",
1659 .name = "replay_redirect",
1660 .type = FIO_OPT_STR_STORE,
1661 .off1 = td_var_offset(replay_redirect),
1662 .parent = "read_iolog",
1663 .help = "Replay all I/O onto this device, regardless of trace device",
1666 .name = "exec_prerun",
1667 .type = FIO_OPT_STR_STORE,
1668 .off1 = td_var_offset(exec_prerun),
1669 .help = "Execute this file prior to running job",
1672 .name = "exec_postrun",
1673 .type = FIO_OPT_STR_STORE,
1674 .off1 = td_var_offset(exec_postrun),
1675 .help = "Execute this file after running job",
1677 #ifdef FIO_HAVE_IOSCHED_SWITCH
1679 .name = "ioscheduler",
1680 .type = FIO_OPT_STR_STORE,
1681 .off1 = td_var_offset(ioscheduler),
1682 .help = "Use this IO scheduler on the backing device",
1687 .type = FIO_OPT_STR_VAL,
1688 .off1 = td_var_offset(zone_size),
1689 .help = "Amount of data to read per zone",
1693 .name = "zonerange",
1694 .type = FIO_OPT_STR_VAL,
1695 .off1 = td_var_offset(zone_range),
1696 .help = "Give size of an IO zone",
1701 .type = FIO_OPT_STR_VAL,
1702 .off1 = td_var_offset(zone_skip),
1703 .help = "Space between IO zones",
1708 .type = FIO_OPT_STR_VAL,
1709 .cb = str_lockmem_cb,
1710 .help = "Lock down this amount of memory",
1714 .name = "rwmixread",
1715 .type = FIO_OPT_INT,
1716 .cb = str_rwmix_read_cb,
1718 .help = "Percentage of mixed workload that is reads",
1722 .name = "rwmixwrite",
1723 .type = FIO_OPT_INT,
1724 .cb = str_rwmix_write_cb,
1726 .help = "Percentage of mixed workload that is writes",
1730 .name = "rwmixcycle",
1731 .type = FIO_OPT_DEPRECATED,
1735 .type = FIO_OPT_INT,
1736 .off1 = td_var_offset(nice),
1737 .help = "Set job CPU nice value",
1742 #ifdef FIO_HAVE_IOPRIO
1745 .type = FIO_OPT_INT,
1747 .help = "Set job IO priority value",
1752 .name = "prioclass",
1753 .type = FIO_OPT_INT,
1754 .cb = str_prioclass_cb,
1755 .help = "Set job IO priority class",
1761 .name = "thinktime",
1762 .type = FIO_OPT_INT,
1763 .off1 = td_var_offset(thinktime),
1764 .help = "Idle time between IO buffers (usec)",
1768 .name = "thinktime_spin",
1769 .type = FIO_OPT_INT,
1770 .off1 = td_var_offset(thinktime_spin),
1771 .help = "Start think time by spinning this amount (usec)",
1773 .parent = "thinktime",
1776 .name = "thinktime_blocks",
1777 .type = FIO_OPT_INT,
1778 .off1 = td_var_offset(thinktime_blocks),
1779 .help = "IO buffer period between 'thinktime'",
1781 .parent = "thinktime",
1785 .type = FIO_OPT_INT,
1786 .off1 = td_var_offset(rate[0]),
1787 .off2 = td_var_offset(rate[1]),
1788 .help = "Set bandwidth rate",
1792 .type = FIO_OPT_INT,
1793 .off1 = td_var_offset(ratemin[0]),
1794 .off2 = td_var_offset(ratemin[1]),
1795 .help = "Job must meet this rate or it will be shutdown",
1799 .name = "rate_iops",
1800 .type = FIO_OPT_INT,
1801 .off1 = td_var_offset(rate_iops[0]),
1802 .off2 = td_var_offset(rate_iops[1]),
1803 .help = "Limit IO used to this number of IO operations/sec",
1806 .name = "rate_iops_min",
1807 .type = FIO_OPT_INT,
1808 .off1 = td_var_offset(rate_iops_min[0]),
1809 .off2 = td_var_offset(rate_iops_min[1]),
1810 .help = "Job must meet this rate or it will be shut down",
1811 .parent = "rate_iops",
1814 .name = "ratecycle",
1815 .type = FIO_OPT_INT,
1816 .off1 = td_var_offset(ratecycle),
1817 .help = "Window average for rate limits (msec)",
1822 .name = "invalidate",
1823 .type = FIO_OPT_BOOL,
1824 .off1 = td_var_offset(invalidate_cache),
1825 .help = "Invalidate buffer/page cache prior to running job",
1830 .type = FIO_OPT_BOOL,
1831 .off1 = td_var_offset(sync_io),
1832 .help = "Use O_SYNC for buffered writes",
1834 .parent = "buffered",
1837 .name = "bwavgtime",
1838 .type = FIO_OPT_INT,
1839 .off1 = td_var_offset(bw_avg_time),
1840 .help = "Time window over which to calculate bandwidth"
1843 .parent = "write_bw_log",
1846 .name = "iopsavgtime",
1847 .type = FIO_OPT_INT,
1848 .off1 = td_var_offset(iops_avg_time),
1849 .help = "Time window over which to calculate IOPS (msec)",
1851 .parent = "write_iops_log",
1854 .name = "create_serialize",
1855 .type = FIO_OPT_BOOL,
1856 .off1 = td_var_offset(create_serialize),
1857 .help = "Serialize creating of job files",
1861 .name = "create_fsync",
1862 .type = FIO_OPT_BOOL,
1863 .off1 = td_var_offset(create_fsync),
1864 .help = "fsync file after creation",
1868 .name = "create_on_open",
1869 .type = FIO_OPT_BOOL,
1870 .off1 = td_var_offset(create_on_open),
1871 .help = "Create files when they are opened for IO",
1876 .type = FIO_OPT_BOOL,
1877 .off1 = td_var_offset(pre_read),
1878 .help = "Pre-read files before starting official testing",
1883 .type = FIO_OPT_INT,
1884 .off1 = td_var_offset(cpuload),
1885 .help = "Use this percentage of CPU",
1888 .name = "cpuchunks",
1889 .type = FIO_OPT_INT,
1890 .off1 = td_var_offset(cpucycle),
1891 .help = "Length of the CPU burn cycles (usecs)",
1893 .parent = "cpuload",
1895 #ifdef FIO_HAVE_CPU_AFFINITY
1898 .type = FIO_OPT_INT,
1899 .cb = str_cpumask_cb,
1900 .help = "CPU affinity mask",
1903 .name = "cpus_allowed",
1904 .type = FIO_OPT_STR,
1905 .cb = str_cpus_allowed_cb,
1906 .help = "Set CPUs allowed",
1910 .name = "end_fsync",
1911 .type = FIO_OPT_BOOL,
1912 .off1 = td_var_offset(end_fsync),
1913 .help = "Include fsync at the end of job",
1917 .name = "fsync_on_close",
1918 .type = FIO_OPT_BOOL,
1919 .off1 = td_var_offset(fsync_on_close),
1920 .help = "fsync files on close",
1925 .type = FIO_OPT_BOOL,
1926 .off1 = td_var_offset(unlink),
1927 .help = "Unlink created files after job has completed",
1932 .type = FIO_OPT_STR_SET,
1933 .cb = str_exitall_cb,
1934 .help = "Terminate all jobs when one exits",
1937 .name = "stonewall",
1938 .alias = "wait_for_previous",
1939 .type = FIO_OPT_STR_SET,
1940 .off1 = td_var_offset(stonewall),
1941 .help = "Insert a hard barrier between this job and previous",
1944 .name = "new_group",
1945 .type = FIO_OPT_STR_SET,
1946 .off1 = td_var_offset(new_group),
1947 .help = "Mark the start of a new group (for reporting)",
1951 .type = FIO_OPT_STR_SET,
1952 .off1 = td_var_offset(use_thread),
1953 .help = "Use threads instead of forks",
1956 .name = "write_bw_log",
1957 .type = FIO_OPT_STR,
1958 .off1 = td_var_offset(write_bw_log),
1959 .cb = str_write_bw_log_cb,
1960 .help = "Write log of bandwidth during run",
1963 .name = "write_lat_log",
1964 .type = FIO_OPT_STR,
1965 .off1 = td_var_offset(write_lat_log),
1966 .cb = str_write_lat_log_cb,
1967 .help = "Write log of latency during run",
1970 .name = "write_iops_log",
1971 .type = FIO_OPT_STR,
1972 .off1 = td_var_offset(write_iops_log),
1973 .cb = str_write_iops_log_cb,
1974 .help = "Write log of IOPS during run",
1977 .name = "log_avg_msec",
1978 .type = FIO_OPT_INT,
1979 .off1 = td_var_offset(log_avg_msec),
1980 .help = "Average bw/iops/lat logs over this period of time",
1984 .name = "hugepage-size",
1985 .type = FIO_OPT_INT,
1986 .off1 = td_var_offset(hugepage_size),
1987 .help = "When using hugepages, specify size of each page",
1988 .def = __fio_stringify(FIO_HUGE_PAGE),
1991 .name = "group_reporting",
1992 .type = FIO_OPT_STR_SET,
1993 .off1 = td_var_offset(group_reporting),
1994 .help = "Do reporting on a per-group basis",
1997 .name = "zero_buffers",
1998 .type = FIO_OPT_STR_SET,
1999 .off1 = td_var_offset(zero_buffers),
2000 .help = "Init IO buffers to all zeroes",
2003 .name = "refill_buffers",
2004 .type = FIO_OPT_STR_SET,
2005 .off1 = td_var_offset(refill_buffers),
2006 .help = "Refill IO buffers on every IO submit",
2009 .name = "scramble_buffers",
2010 .type = FIO_OPT_BOOL,
2011 .off1 = td_var_offset(scramble_buffers),
2012 .help = "Slightly scramble buffers on every IO submit",
2016 .name = "clat_percentiles",
2017 .type = FIO_OPT_BOOL,
2018 .off1 = td_var_offset(clat_percentiles),
2019 .help = "Enable the reporting of completion latency percentiles",
2023 .name = "percentile_list",
2024 .type = FIO_OPT_FLOAT_LIST,
2025 .off1 = td_var_offset(percentile_list),
2026 .off2 = td_var_offset(overwrite_plist),
2027 .help = "Specify a custom list of percentiles to report",
2028 .maxlen = FIO_IO_U_LIST_MAX_LEN,
2033 #ifdef FIO_HAVE_DISK_UTIL
2035 .name = "disk_util",
2036 .type = FIO_OPT_BOOL,
2037 .off1 = td_var_offset(do_disk_util),
2038 .help = "Log disk utilization statistics",
2043 .name = "gtod_reduce",
2044 .type = FIO_OPT_BOOL,
2045 .help = "Greatly reduce number of gettimeofday() calls",
2046 .cb = str_gtod_reduce_cb,
2050 .name = "disable_lat",
2051 .type = FIO_OPT_BOOL,
2052 .off1 = td_var_offset(disable_lat),
2053 .help = "Disable latency numbers",
2054 .parent = "gtod_reduce",
2058 .name = "disable_clat",
2059 .type = FIO_OPT_BOOL,
2060 .off1 = td_var_offset(disable_clat),
2061 .help = "Disable completion latency numbers",
2062 .parent = "gtod_reduce",
2066 .name = "disable_slat",
2067 .type = FIO_OPT_BOOL,
2068 .off1 = td_var_offset(disable_slat),
2069 .help = "Disable submission latency numbers",
2070 .parent = "gtod_reduce",
2074 .name = "disable_bw_measurement",
2075 .type = FIO_OPT_BOOL,
2076 .off1 = td_var_offset(disable_bw),
2077 .help = "Disable bandwidth logging",
2078 .parent = "gtod_reduce",
2083 .type = FIO_OPT_INT,
2084 .cb = str_gtod_cpu_cb,
2085 .help = "Set up dedicated gettimeofday() thread on this CPU",
2086 .verify = gtod_cpu_verify,
2089 .name = "continue_on_error",
2090 .type = FIO_OPT_STR,
2091 .off1 = td_var_offset(continue_on_error),
2092 .help = "Continue on non-fatal errors during IO",
2096 .oval = ERROR_TYPE_NONE,
2097 .help = "Exit when an error is encountered",
2100 .oval = ERROR_TYPE_READ,
2101 .help = "Continue on read errors only",
2104 .oval = ERROR_TYPE_WRITE,
2105 .help = "Continue on write errors only",
2108 .oval = ERROR_TYPE_READ | ERROR_TYPE_WRITE,
2109 .help = "Continue on any IO errors",
2112 .oval = ERROR_TYPE_VERIFY,
2113 .help = "Continue on verify errors only",
2116 .oval = ERROR_TYPE_ANY,
2117 .help = "Continue on all io and verify errors",
2120 .oval = ERROR_TYPE_NONE,
2121 .help = "Alias for 'none'",
2124 .oval = ERROR_TYPE_ANY,
2125 .help = "Alias for 'all'",
2131 .type = FIO_OPT_STR_STORE,
2132 .off1 = td_var_offset(profile),
2133 .help = "Select a specific builtin performance test",
2137 .type = FIO_OPT_STR_STORE,
2138 .off1 = td_var_offset(cgroup),
2139 .help = "Add job to cgroup of this name",
2142 .name = "cgroup_weight",
2143 .type = FIO_OPT_INT,
2144 .off1 = td_var_offset(cgroup_weight),
2145 .help = "Use given weight for cgroup",
2150 .name = "cgroup_nodelete",
2151 .type = FIO_OPT_BOOL,
2152 .off1 = td_var_offset(cgroup_nodelete),
2153 .help = "Do not delete cgroups after job completion",
2158 .type = FIO_OPT_INT,
2159 .off1 = td_var_offset(uid),
2160 .help = "Run job with this user ID",
2164 .type = FIO_OPT_INT,
2165 .off1 = td_var_offset(gid),
2166 .help = "Run job with this group ID",
2170 .type = FIO_OPT_INT,
2171 .off1 = td_var_offset(flow_id),
2172 .help = "The flow index ID to use",
2177 .type = FIO_OPT_INT,
2178 .off1 = td_var_offset(flow),
2179 .help = "Weight for flow control of this job",
2180 .parent = "flow_id",
2184 .name = "flow_watermark",
2185 .type = FIO_OPT_INT,
2186 .off1 = td_var_offset(flow_watermark),
2187 .help = "High watermark for flow control. This option"
2188 " should be set to the same value for all threads"
2189 " with non-zero flow.",
2190 .parent = "flow_id",
2194 .name = "flow_sleep",
2195 .type = FIO_OPT_INT,
2196 .off1 = td_var_offset(flow_sleep),
2197 .help = "How many microseconds to sleep after being held"
2198 " back by the flow control mechanism",
2199 .parent = "flow_id",
2207 static void add_to_lopt(struct option *lopt, struct fio_option *o,
2208 const char *name, int val)
2210 lopt->name = (char *) name;
2212 if (o->type == FIO_OPT_STR_SET)
2213 lopt->has_arg = no_argument;
2215 lopt->has_arg = required_argument;
2218 static void options_to_lopts(struct fio_option *opts,
2219 struct option *long_options,
2220 int i, int option_type)
2222 struct fio_option *o = &opts[0];
2224 add_to_lopt(&long_options[i], o, o->name, option_type);
2227 add_to_lopt(&long_options[i], o, o->alias, option_type);
2232 assert(i < FIO_NR_OPTIONS);
2236 void fio_options_set_ioengine_opts(struct option *long_options,
2237 struct thread_data *td)
2242 while (long_options[i].name) {
2243 if (long_options[i].val == FIO_GETOPT_IOENGINE) {
2244 memset(&long_options[i], 0, sizeof(*long_options));
2251 * Just clear out the prior ioengine options.
2256 options_to_lopts(td->io_ops->options, long_options, i,
2257 FIO_GETOPT_IOENGINE);
2260 void fio_options_dup_and_init(struct option *long_options)
2264 options_init(options);
2267 while (long_options[i].name)
2270 options_to_lopts(options, long_options, i, FIO_GETOPT_JOB);
2273 struct fio_keyword {
2279 static struct fio_keyword fio_keywords[] = {
2281 .word = "$pagesize",
2282 .desc = "Page size in the system",
2285 .word = "$mb_memory",
2286 .desc = "Megabytes of memory online",
2290 .desc = "Number of CPUs online in the system",
2297 void fio_keywords_init(void)
2299 unsigned long long mb_memory;
2303 sprintf(buf, "%lu", page_size);
2304 fio_keywords[0].replace = strdup(buf);
2306 mb_memory = os_phys_mem() / (1024 * 1024);
2307 sprintf(buf, "%llu", mb_memory);
2308 fio_keywords[1].replace = strdup(buf);
2311 sprintf(buf, "%lu", l);
2312 fio_keywords[2].replace = strdup(buf);
2317 static char *bc_calc(char *str)
2319 char buf[128], *tmp;
2324 * No math, just return string
2326 if ((!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2327 !strchr(str, '/')) || strchr(str, '\''))
2331 * Split option from value, we only need to calculate the value
2333 tmp = strchr(str, '=');
2340 * Prevent buffer overflows; such a case isn't reasonable anyway
2342 if (strlen(str) >= 128 || strlen(tmp) > 100)
2345 sprintf(buf, "which %s > /dev/null", BC_APP);
2347 log_err("fio: bc is needed for performing math\n");
2351 sprintf(buf, "echo '%s' | %s", tmp, BC_APP);
2352 f = popen(buf, "r");
2357 ret = fread(&buf[tmp - str], 1, 128 - (tmp - str), f);
2363 buf[(tmp - str) + ret - 1] = '\0';
2364 memcpy(buf, str, tmp - str);
2370 * Return a copy of the input string with substrings of the form ${VARNAME}
2371 * substituted with the value of the environment variable VARNAME. The
2372 * substitution always occurs, even if VARNAME is empty or the corresponding
2373 * environment variable undefined.
2375 static char *option_dup_subs(const char *opt)
2377 char out[OPT_LEN_MAX+1];
2378 char in[OPT_LEN_MAX+1];
2381 char *ch1, *ch2, *env;
2382 ssize_t nchr = OPT_LEN_MAX;
2385 if (strlen(opt) + 1 > OPT_LEN_MAX) {
2386 log_err("OPT_LEN_MAX (%d) is too small\n", OPT_LEN_MAX);
2390 in[OPT_LEN_MAX] = '\0';
2391 strncpy(in, opt, OPT_LEN_MAX);
2393 while (*inptr && nchr > 0) {
2394 if (inptr[0] == '$' && inptr[1] == '{') {
2395 ch2 = strchr(inptr, '}');
2396 if (ch2 && inptr+1 < ch2) {
2403 envlen = strlen(env);
2404 if (envlen <= nchr) {
2405 memcpy(outptr, env, envlen);
2415 *outptr++ = *inptr++;
2424 * Look for reserved variable names and replace them with real values
2426 static char *fio_keyword_replace(char *opt)
2432 for (i = 0; fio_keywords[i].word != NULL; i++) {
2433 struct fio_keyword *kw = &fio_keywords[i];
2435 while ((s = strstr(opt, kw->word)) != NULL) {
2436 char *new = malloc(strlen(opt) + 1);
2442 * Copy part of the string before the keyword and
2443 * sprintf() the replacement after it.
2445 memcpy(new, opt, olen);
2446 len = sprintf(new + olen, "%s", kw->replace);
2449 * If there's more in the original string, copy that
2452 opt += strlen(kw->word) + olen;
2454 memcpy(new + olen + len, opt, opt - o_org - 1);
2457 * replace opt and free the old opt
2467 * Check for potential math and invoke bc, if possible
2475 static char **dup_and_sub_options(char **opts, int num_opts)
2478 char **opts_copy = malloc(num_opts * sizeof(*opts));
2479 for (i = 0; i < num_opts; i++) {
2480 opts_copy[i] = option_dup_subs(opts[i]);
2483 opts_copy[i] = fio_keyword_replace(opts_copy[i]);
2488 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2490 int i, ret, unknown;
2493 sort_options(opts, options, num_opts);
2494 opts_copy = dup_and_sub_options(opts, num_opts);
2496 for (ret = 0, i = 0, unknown = 0; i < num_opts; i++) {
2497 struct fio_option *o;
2498 int newret = parse_option(opts_copy[i], opts[i], options, &o,
2507 opts_copy[i] = NULL;
2514 ret |= ioengine_load(td);
2516 sort_options(opts_copy, td->io_ops->options, num_opts);
2519 for (i = 0; i < num_opts; i++) {
2520 struct fio_option *o = NULL;
2526 newret = parse_option(opts_copy[i], opts[i],
2527 td->io_ops->options, &o,
2532 log_err("Bad option <%s>\n", opts[i]);
2535 opts_copy[i] = NULL;
2543 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2545 return parse_cmd_option(opt, val, options, td);
2548 int fio_cmd_ioengine_option_parse(struct thread_data *td, const char *opt,
2551 return parse_cmd_option(opt, val, td->io_ops->options, td);
2554 void fio_fill_default_options(struct thread_data *td)
2556 fill_default_options(td, options);
2559 int fio_show_option_help(const char *opt)
2561 return show_cmd_help(options, opt);
2564 void options_mem_dupe(void *data, struct fio_option *options)
2566 struct fio_option *o;
2569 for (o = &options[0]; o->name; o++) {
2570 if (o->type != FIO_OPT_STR_STORE)
2573 ptr = td_var(data, o->off1);
2575 *ptr = strdup(*ptr);
2580 * dupe FIO_OPT_STR_STORE options
2582 void fio_options_mem_dupe(struct thread_data *td)
2584 options_mem_dupe(&td->o, options);
2586 if (td->eo && td->io_ops) {
2587 void *oldeo = td->eo;
2589 td->eo = malloc(td->io_ops->option_struct_size);
2590 memcpy(td->eo, oldeo, td->io_ops->option_struct_size);
2591 options_mem_dupe(td->eo, td->io_ops->options);
2595 unsigned int fio_get_kb_base(void *data)
2597 struct thread_data *td = data;
2598 unsigned int kb_base = 0;
2601 kb_base = td->o.kb_base;
2608 int add_option(struct fio_option *o)
2610 struct fio_option *__o;
2619 memcpy(&options[opt_index], o, sizeof(*o));
2623 void invalidate_profile_options(const char *prof_name)
2625 struct fio_option *o;
2629 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
2630 o->type = FIO_OPT_INVALID;
2631 o->prof_name = NULL;
2637 void add_opt_posval(const char *optname, const char *ival, const char *help)
2639 struct fio_option *o;
2642 o = find_option(options, optname);
2646 for (i = 0; i < PARSE_MAX_VP; i++) {
2647 if (o->posval[i].ival)
2650 o->posval[i].ival = ival;
2651 o->posval[i].help = help;
2656 void del_opt_posval(const char *optname, const char *ival)
2658 struct fio_option *o;
2661 o = find_option(options, optname);
2665 for (i = 0; i < PARSE_MAX_VP; i++) {
2666 if (!o->posval[i].ival)
2668 if (strcmp(o->posval[i].ival, ival))
2671 o->posval[i].ival = NULL;
2672 o->posval[i].help = NULL;
2676 void fio_options_free(struct thread_data *td)
2678 options_free(options, td);
2679 if (td->eo && td->io_ops && td->io_ops->options) {
2680 options_free(td->io_ops->options, td->eo);