Add --readonly option
[fio.git] / init.c
diff --git a/init.c b/init.c
index b70ccaf8b7a68d13bffc0967490963ac775a7bf2..2a1ee149cc85dc15601a7ad86ec8a01021987d3c 100644 (file)
--- a/init.c
+++ b/init.c
 #include "fio.h"
 #include "parse.h"
 
-static char fio_version_string[] = "fio 1.14a";
+static char fio_version_string[] = "fio 1.17.1";
 
 #define FIO_RANDSEED           (0xb1899bedUL)
 
 static char **ini_file;
 static int max_jobs = MAX_JOBS;
+static int dump_cmdline;
+static int read_only;
 
 struct thread_data def_thread;
 struct thread_data *threads = NULL;
@@ -85,6 +87,16 @@ static struct option long_options[FIO_NR_OPTIONS] = {
                .has_arg        = optional_argument,
                .val            = 'c',
        },
+       {
+               .name           = "showcmd",
+               .has_arg        = no_argument,
+               .val            = 's',
+       },
+       {
+               .name           = "readonly",
+               .has_arg        = no_argument,
+               .val            = 'r',
+       },
        {
                .name           = NULL,
        },
@@ -115,6 +127,9 @@ static struct thread_data *get_new_job(int global, struct thread_data *parent)
        td = &threads[thread_number++];
        *td = *parent;
 
+       dup_files(td, parent);
+       options_mem_dupe(td);
+
        td->thread_number = thread_number;
        return td;
 }
@@ -131,96 +146,148 @@ static void put_job(struct thread_data *td)
        thread_number--;
 }
 
+static int setup_rate(struct thread_data *td)
+{
+       unsigned long nr_reads_per_msec;
+       unsigned long long rate;
+       unsigned int bs;
+
+       if (!td->o.rate && !td->o.rate_iops)
+               return 0;
+
+       if (td_rw(td))
+               bs = td->o.rw_min_bs;
+       else if (td_read(td))
+               bs = td->o.min_bs[DDIR_READ];
+       else
+               bs = td->o.min_bs[DDIR_WRITE];
+
+       if (td->o.rate) {
+               rate = td->o.rate;
+               nr_reads_per_msec = (rate * 1024 * 1000LL) / bs;
+       } else
+               nr_reads_per_msec = td->o.rate_iops * 1000UL;
+
+       if (!nr_reads_per_msec) {
+               log_err("rate lower than supported\n");
+               return -1;
+       }
+
+       td->rate_usec_cycle = 1000000000ULL / nr_reads_per_msec;
+       td->rate_pending_usleep = 0;
+       return 0;
+}
+
 /*
  * Lazy way of fixing up options that depend on each other. We could also
  * define option callback handlers, but this is easier.
  */
-static void fixup_options(struct thread_data *td)
+static int fixup_options(struct thread_data *td)
 {
-       if (!td->rwmixread && td->rwmixwrite)
-               td->rwmixread = 100 - td->rwmixwrite;
+       struct thread_options *o = &td->o;
 
-       if (td->write_iolog_file && td->read_iolog_file) {
+       if (read_only && td_write(td)) {
+               log_err("fio: job <%s> has write bit set, but fio is in read-only mode\n", td->o.name);
+               return 1;
+       }
+       
+       if (o->rwmix[DDIR_READ] + o->rwmix[DDIR_WRITE] > 100)
+               o->rwmix[DDIR_WRITE] = 100 - o->rwmix[DDIR_READ];
+
+       if (o->write_iolog_file && o->read_iolog_file) {
                log_err("fio: read iolog overrides write_iolog\n");
-               free(td->write_iolog_file);
-               td->write_iolog_file = NULL;
+               free(o->write_iolog_file);
+               o->write_iolog_file = NULL;
        }
 
        if (td->io_ops->flags & FIO_SYNCIO)
-               td->iodepth = 1;
+               o->iodepth = 1;
        else {
-               if (!td->iodepth)
-                       td->iodepth = td->open_files;
+               if (!o->iodepth)
+                       o->iodepth = o->open_files;
        }
 
        /*
         * only really works for sequential io for now, and with 1 file
         */
-       if (td->zone_size && td_random(td) && td->open_files == 1)
-               td->zone_size = 0;
+       if (o->zone_size && td_random(td) && o->open_files == 1)
+               o->zone_size = 0;
 
        /*
         * Reads can do overwrites, we always need to pre-create the file
         */
        if (td_read(td) || td_rw(td))
-               td->overwrite = 1;
-
-       if (!td->min_bs[DDIR_READ])
-               td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
-       if (!td->max_bs[DDIR_READ])
-               td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
-       if (!td->min_bs[DDIR_WRITE])
-               td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
-       if (!td->max_bs[DDIR_WRITE])
-               td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
+               o->overwrite = 1;
 
-       td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
+       if (!o->min_bs[DDIR_READ])
+               o->min_bs[DDIR_READ]= o->bs[DDIR_READ];
+       if (!o->max_bs[DDIR_READ])
+               o->max_bs[DDIR_READ] = o->bs[DDIR_READ];
+       if (!o->min_bs[DDIR_WRITE])
+               o->min_bs[DDIR_WRITE]= o->bs[DDIR_WRITE];
+       if (!o->max_bs[DDIR_WRITE])
+               o->max_bs[DDIR_WRITE] = o->bs[DDIR_WRITE];
 
-       if (!td->file_size_high)
-               td->file_size_high = td->file_size_low;
+       o->rw_min_bs = min(o->min_bs[DDIR_READ], o->min_bs[DDIR_WRITE]);
 
-       if (td_read(td) && !td_rw(td))
-               td->verify = 0;
+       if (!o->file_size_high)
+               o->file_size_high = o->file_size_low;
 
-       if (td->norandommap && td->verify != VERIFY_NONE) {
+       if (o->norandommap && o->verify != VERIFY_NONE) {
                log_err("fio: norandommap given, verify disabled\n");
-               td->verify = VERIFY_NONE;
+               o->verify = VERIFY_NONE;
        }
-       if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
+       if (o->bs_unaligned && (o->odirect || td->io_ops->flags & FIO_RAWIO))
                log_err("fio: bs_unaligned may not work with raw io\n");
 
        /*
         * thinktime_spin must be less than thinktime
         */
-       if (td->thinktime_spin > td->thinktime)
-               td->thinktime_spin = td->thinktime;
+       if (o->thinktime_spin > o->thinktime)
+               o->thinktime_spin = o->thinktime;
 
        /*
         * The low water mark cannot be bigger than the iodepth
         */
-       if (td->iodepth_low > td->iodepth || !td->iodepth_low) {
+       if (o->iodepth_low > o->iodepth || !o->iodepth_low) {
                /*
                 * syslet work around - if the workload is sequential,
                 * we want to let the queue drain all the way down to
                 * avoid seeking between async threads
                 */
                if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
-                       td->iodepth_low = 1;
+                       o->iodepth_low = 1;
                else
-                       td->iodepth_low = td->iodepth;
+                       o->iodepth_low = o->iodepth;
        }
 
        /*
         * If batch number isn't set, default to the same as iodepth
         */
-       if (td->iodepth_batch > td->iodepth || !td->iodepth_batch)
-               td->iodepth_batch = td->iodepth;
+       if (o->iodepth_batch > o->iodepth || !o->iodepth_batch)
+               o->iodepth_batch = o->iodepth;
+
+       if (o->nr_files > td->files_index)
+               o->nr_files = td->files_index;
+
+       if (o->open_files > o->nr_files || !o->open_files)
+               o->open_files = o->nr_files;
+
+       if ((o->rate && o->rate_iops) || (o->ratemin && o->rate_iops_min)) {
+               log_err("fio: rate and rate_iops are mutually exclusive\n");
+               return 1;
+       }
+       if ((o->rate < o->ratemin) || (o->rate_iops < o->rate_iops_min)) {
+               log_err("fio: minimum rate exceeds rate\n");
+               return 1;
+       }
 
-       if (td->nr_files > td->files_index)
-               td->nr_files = td->files_index;
+       if (!o->timeout && o->time_based) {
+               log_err("fio: time_based requires a runtime/timeout setting\n");
+               o->time_based = 0;
+       }
 
-       if (td->open_files > td->nr_files || !td->open_files)
-               td->open_files = td->nr_files;
+       return 0;
 }
 
 /*
@@ -278,9 +345,7 @@ static int exists_and_not_file(const char *filename)
 static int init_random_state(struct thread_data *td)
 {
        unsigned long seeds[6];
-       int fd, num_maps, blocks;
-       struct fio_file *f;
-       unsigned int i;
+       int fd;
 
        fd = open("/dev/urandom", O_RDONLY);
        if (fd == -1) {
@@ -300,7 +365,7 @@ static int init_random_state(struct thread_data *td)
        os_random_seed(seeds[1], &td->verify_state);
        os_random_seed(seeds[2], &td->rwmix_state);
 
-       if (td->file_service_type == FIO_FSERVICE_RANDOM)
+       if (td->o.file_service_type == FIO_FSERVICE_RANDOM)
                os_random_seed(seeds[3], &td->next_file_state);
 
        os_random_seed(seeds[5], &td->file_size_state);
@@ -308,28 +373,13 @@ static int init_random_state(struct thread_data *td)
        if (!td_random(td))
                return 0;
 
-       if (td->rand_repeatable)
+       if (td->o.rand_repeatable)
                seeds[4] = FIO_RANDSEED * td->thread_number;
 
-       if (!td->norandommap) {
-               for_each_file(td, f, i) {
-                       blocks = (f->real_file_size + td->rw_min_bs - 1) / td->rw_min_bs;
-                       num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
-                       f->file_map = malloc(num_maps * sizeof(long));
-                       if (!f->file_map) {
-                               log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
-                               return 1;
-                       }
-                       f->num_maps = num_maps;
-                       memset(f->file_map, 0, num_maps * sizeof(long));
-               }
-       }
-
        os_random_seed(seeds[4], &td->random_state);
        return 0;
 }
 
-
 /*
  * Adds a job to the list of things todo. Sanitizes the various options
  * to make sure we don't have conflicts, and initializes various
@@ -340,7 +390,6 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
        const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
                                   "randread", "randwrite", "randrw" };
        unsigned int i;
-       struct fio_file *f;
        const char *engine;
        char fname[PATH_MAX];
        int numjobs, file_alloced;
@@ -351,51 +400,62 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
        if (td == &def_thread)
                return 0;
 
-       engine = get_engine_name(td->ioengine);
+       /*
+        * if we are just dumping the output command line, don't add the job
+        */
+       if (dump_cmdline) {
+               put_job(td);
+               return 0;
+       }
+
+       engine = get_engine_name(td->o.ioengine);
        td->io_ops = load_ioengine(td, engine);
        if (!td->io_ops) {
                log_err("fio: failed to load engine %s\n", engine);
-               return 1;
+               goto err;
        }
 
-       if (td->use_thread)
+       if (td->o.use_thread)
                nr_thread++;
        else
                nr_process++;
 
-       if (td->odirect)
+       if (td->o.odirect)
                td->io_ops->flags |= FIO_RAWIO;
 
        file_alloced = 0;
-       if (!td->filename && !td->files_index) {
+       if (!td->o.filename && !td->files_index) {
                file_alloced = 1;
 
-               if (td->nr_files == 1 && exists_and_not_file(jobname))
+               if (td->o.nr_files == 1 && exists_and_not_file(jobname))
                        add_file(td, jobname);
                else {
-                       for (i = 0; i < td->nr_files; i++) {
+                       for (i = 0; i < td->o.nr_files; i++) {
                                sprintf(fname, "%s.%d.%d", jobname, td->thread_number, i);
                                add_file(td, fname);
                        }
                }
        }
 
-       fixup_options(td);
+       if (fixup_options(td))
+               goto err;
 
-       for_each_file(td, f, i) {
-               if (td->directory && f->filetype == FIO_TYPE_FILE) {
-                       sprintf(fname, "%s/%s", td->directory, f->file_name);
-                       f->file_name = strdup(fname);
-               }
+       if (td->io_ops->flags & FIO_DISKLESSIO) {
+               struct fio_file *f;
+
+               for_each_file(td, f, i)
+                       f->real_file_size = -1ULL;
        }
-               
+
        td->mutex = fio_sem_init(0);
 
        td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
        td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
        td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
+       td->ddir_nr = td->o.ddir_nr;
 
-       if ((td->stonewall || td->numjobs > 1) && prev_group_jobs) {
+       if ((td->o.stonewall || td->o.numjobs > 1 || td->o.new_group)
+            && prev_group_jobs) {
                prev_group_jobs = 0;
                groupid++;
        }
@@ -409,29 +469,29 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
        if (setup_rate(td))
                goto err;
 
-       if (td->write_lat_log) {
+       if (td->o.write_lat_log) {
                setup_log(&td->ts.slat_log);
                setup_log(&td->ts.clat_log);
        }
-       if (td->write_bw_log)
+       if (td->o.write_bw_log)
                setup_log(&td->ts.bw_log);
 
-       if (!td->name)
-               td->name = strdup(jobname);
+       if (!td->o.name)
+               td->o.name = strdup(jobname);
 
        if (!terse_output) {
                if (!job_add_num) {
                        if (!strcmp(td->io_ops->name, "cpuio"))
-                               log_info("%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
+                               log_info("%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->o.name, td->o.cpuload, td->o.cpucycle);
                        else {
                                char *c1, *c2, *c3, *c4;
 
-                               c1 = to_kmg(td->min_bs[DDIR_READ]);
-                               c2 = to_kmg(td->max_bs[DDIR_READ]);
-                               c3 = to_kmg(td->min_bs[DDIR_WRITE]);
-                               c4 = to_kmg(td->max_bs[DDIR_WRITE]);
+                               c1 = to_kmg(td->o.min_bs[DDIR_READ]);
+                               c2 = to_kmg(td->o.max_bs[DDIR_READ]);
+                               c3 = to_kmg(td->o.min_bs[DDIR_WRITE]);
+                               c4 = to_kmg(td->o.max_bs[DDIR_WRITE]);
 
-                               log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[td->td_ddir], c1, c2, c3, c4, td->io_ops->name, td->iodepth);
+                               log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->o.name, td->groupid, ddir_str[td->o.td_ddir], c1, c2, c3, c4, td->io_ops->name, td->o.iodepth);
 
                                free(c1);
                                free(c2);
@@ -446,18 +506,19 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
         * recurse add identical jobs, clear numjobs and stonewall options
         * as they don't apply to sub-jobs
         */
-       numjobs = td->numjobs;
+       numjobs = td->o.numjobs;
        while (--numjobs) {
                struct thread_data *td_new = get_new_job(0, td);
 
                if (!td_new)
                        goto err;
 
-               td_new->numjobs = 1;
-               td_new->stonewall = 0;
+               td_new->o.numjobs = 1;
+               td_new->o.stonewall = 0;
+               td_new->o.new_group = 0;
 
                if (file_alloced) {
-                       td_new->filename = NULL;
+                       td_new->o.filename = NULL;
                        td_new->files_index = 0;
                        td_new->files = NULL;
                }
@@ -468,11 +529,6 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
                        goto err;
        }
 
-       if (td->numjobs > 1) {
-               groupid++;
-               prev_group_jobs = 0;
-       }
-
        return 0;
 err:
        put_job(td);
@@ -507,6 +563,7 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
        FILE *f;
        char *p;
        int ret = 0, stonewall;
+       int first_sect = 1;
 
        f = fopen(file, "r");
        if (!f) {
@@ -515,23 +572,41 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
        }
 
        string = malloc(4096);
-       name = malloc(256);
-       memset(name, 0, 256);
+
+       /*
+        * it's really 256 + small bit, 280 should suffice
+        */
+       name = malloc(280);
+       memset(name, 0, 280);
 
        stonewall = stonewall_flag;
        do {
                p = fgets(string, 4095, f);
                if (!p)
                        break;
+
+               strip_blank_front(&p);
+               strip_blank_end(p);
+
                if (is_empty_or_comment(p))
                        continue;
-               if (sscanf(p, "[%255s]", name) != 1)
-                       continue;
+               if (sscanf(p, "[%255s]", name) != 1) {
+                       log_err("fio: option <%s> outside of [] job section\n", p);
+                       break;
+               }
 
                global = !strncmp(name, "global", 6);
 
                name[strlen(name) - 1] = '\0';
 
+               if (dump_cmdline) {
+                       if (first_sect)
+                               log_info("fio ");
+                       if (!global)
+                               log_info("--name=%s ", name);
+                       first_sect = 0;
+               }
+
                td = get_new_job(global, &def_thread);
                if (!td) {
                        ret = 1;
@@ -542,7 +617,7 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
                 * Seperate multiple job files by a stonewall
                 */
                if (!global && stonewall) {
-                       td->stonewall = stonewall;
+                       td->o.stonewall = stonewall;
                        stonewall = 0;
                }
 
@@ -566,6 +641,8 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
                         * easier on the user.
                         */
                        ret |= fio_option_parse(td, p);
+                       if (!ret && dump_cmdline)
+                               log_info("--%s ", p);
                }
 
                if (!ret) {
@@ -577,6 +654,9 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
                }
        } while (!ret);
 
+       if (dump_cmdline)
+               log_info("\n");
+
        free(string);
        free(name);
        fclose(f);
@@ -587,23 +667,16 @@ static int fill_def_thread(void)
 {
        memset(&def_thread, 0, sizeof(def_thread));
 
-       if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
-               perror("sched_getaffinity");
-               return 1;
-       }
+       fio_getaffinity(getpid(), &def_thread.o.cpumask);
 
        /*
         * fill default options
         */
        fio_fill_default_options(&def_thread);
 
-       def_thread.timeout = def_timeout;
-       def_thread.write_bw_log = write_bw_log;
-       def_thread.write_lat_log = write_lat_log;
-
-#ifdef FIO_HAVE_DISK_UTIL
-       def_thread.do_disk_util = 1;
-#endif
+       def_thread.o.timeout = def_timeout;
+       def_thread.o.write_bw_log = write_bw_log;
+       def_thread.o.write_lat_log = write_lat_log;
 
        return 0;
 }
@@ -668,6 +741,7 @@ static void usage(void)
        printf("\t--version\tPrint version info and exit\n");
        printf("\t--help\t\tPrint this page\n");
        printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
+       printf("\t--showcmd\tTurn a job file into command line options\n");
 }
 
 static int parse_cmd_line(int argc, char *argv[])
@@ -702,6 +776,12 @@ static int parse_cmd_line(int argc, char *argv[])
                        exit(0);
                case 'c':
                        exit(fio_show_option_help(optarg));
+               case 's':
+                       dump_cmdline = 1;
+                       break;
+               case 'r':
+                       read_only = 1;
+                       break;
                case 'v':
                        printf("%s\n", fio_version_string);
                        exit(0);
@@ -710,7 +790,7 @@ static int parse_cmd_line(int argc, char *argv[])
                        char *val = optarg;
 
                        if (!strncmp(opt, "name", 4) && td) {
-                               ret = add_job(td, td->name ?: "fio", 0);
+                               ret = add_job(td, td->o.name ?: "fio", 0);
                                if (ret) {
                                        put_job(td);
                                        return 0;
@@ -718,7 +798,11 @@ static int parse_cmd_line(int argc, char *argv[])
                                td = NULL;
                        }
                        if (!td) {
-                               int global = !strncmp(val, "global", 6);
+                               int global = 0;
+
+                               if (strncmp(opt, "name", 4) ||
+                                   !strncmp(val, "global", 6))
+                                       global = 1;
 
                                td = get_new_job(global, &def_thread);
                                if (!td)
@@ -739,7 +823,7 @@ static int parse_cmd_line(int argc, char *argv[])
                if (dont_add_job)
                        put_job(td);
                else {
-                       ret = add_job(td, td->name ?: "fio", 0);
+                       ret = add_job(td, td->o.name ?: "fio", 0);
                        if (ret)
                                put_job(td);
                }
@@ -781,8 +865,12 @@ int parse_options(int argc, char *argv[])
        }
 
        free(ini_file);
+       options_mem_free(&def_thread);
 
        if (!thread_number) {
+               if (dump_cmdline)
+                       return 0;
+
                log_err("No jobs defined(s)\n");
                return 1;
        }