client: handle connection failure
[fio.git] / init.c
diff --git a/init.c b/init.c
index 4e7eb4989976ad86c32910e7b2144d260cfc497f..d9c78ec5e69b2953701c799ac292f3295df25c73 100644 (file)
--- a/init.c
+++ b/init.c
 #include "filehash.h"
 #include "verify.h"
 #include "profile.h"
+#include "server.h"
 
 #include "lib/getopt.h"
 
-static char fio_version_string[] = "fio 1.55";
+static char fio_version_string[] = "fio 1.58";
 
 #define FIO_RANDSEED           (0xb1899bedUL)
 
@@ -43,11 +44,14 @@ char **job_sections = NULL;
 int nr_job_sections = 0;
 char *exec_profile = NULL;
 int warnings_fatal = 0;
+int terse_version = 2;
+int is_backend = 0;
+int nr_clients = 0;
+int log_syslog = 0;
 
 int write_bw_log = 0;
 int read_only = 0;
 
-static int def_timeout;
 static int write_lat_log;
 
 static int prev_group_jobs;
@@ -148,19 +152,101 @@ static struct option l_opts[FIO_NR_OPTIONS] = {
                .has_arg        = required_argument,
                .val            = 'j',
        },
+       {
+               .name           = (char *) "terse-version",
+               .has_arg        = required_argument,
+               .val            = 'V',
+       },
+       {
+               .name           = (char *) "server",
+               .has_arg        = no_argument,
+               .val            = 'S',
+       },
+       {       .name           = (char *) "daemonize",
+               .has_arg        = no_argument,
+               .val            = 'D',
+       },
+       {
+               .name           = (char *) "net-port",
+               .has_arg        = required_argument,
+               .val            = 'P',
+       },
+       {
+               .name           = (char *) "client",
+               .has_arg        = required_argument,
+               .val            = 'C',
+       },
        {
                .name           = NULL,
        },
 };
 
-FILE *get_f_out()
+static void free_shm(void)
 {
-       return f_out;
+       struct shmid_ds sbuf;
+
+       if (threads) {
+               void *tp = threads;
+
+               threads = NULL;
+               file_hash_exit();
+               fio_debug_jobp = NULL;
+               shmdt(tp);
+               shmctl(shm_id, IPC_RMID, &sbuf);
+       }
+
+       scleanup();
 }
 
-FILE *get_f_err()
+/*
+ * The thread area is shared between the main process and the job
+ * threads/processes. So setup a shared memory segment that will hold
+ * all the job info. We use the end of the region for keeping track of
+ * open files across jobs, for file sharing.
+ */
+static int setup_thread_area(void)
 {
-       return f_err;
+       void *hash;
+
+       if (threads)
+               return 0;
+
+       /*
+        * 1024 is too much on some machines, scale max_jobs if
+        * we get a failure that looks like too large a shm segment
+        */
+       do {
+               size_t size = max_jobs * sizeof(struct thread_data);
+
+               size += file_hash_size;
+               size += sizeof(unsigned int);
+
+               shm_id = shmget(0, size, IPC_CREAT | 0600);
+               if (shm_id != -1)
+                       break;
+               if (errno != EINVAL) {
+                       perror("shmget");
+                       break;
+               }
+
+               max_jobs >>= 1;
+       } while (max_jobs);
+
+       if (shm_id == -1)
+               return 1;
+
+       threads = shmat(shm_id, NULL, 0);
+       if (threads == (void *) -1) {
+               perror("shmat");
+               return 1;
+       }
+
+       memset(threads, 0, max_jobs * sizeof(struct thread_data));
+       hash = (void *) threads + max_jobs * sizeof(struct thread_data);
+       fio_debug_jobp = (void *) hash + file_hash_size;
+       *fio_debug_jobp = -1;
+       file_hash_init(hash);
+       return 0;
 }
 
 /*
@@ -172,6 +258,10 @@ static struct thread_data *get_new_job(int global, struct thread_data *parent)
 
        if (global)
                return &def_thread;
+       if (setup_thread_area()) {
+               log_err("error: failed to setup shm segment\n");
+               return NULL;
+       }
        if (thread_number >= max_jobs) {
                log_err("error: maximum number of jobs (%d) reached.\n",
                                max_jobs);
@@ -516,6 +606,8 @@ void td_fill_rand_seeds(struct thread_data *td)
                td_fill_rand_seeds_os(td);
        else
                td_fill_rand_seeds_internal(td);
+
+       init_rand_seed(&td->buf_state, td->rand_seeds[7]);
 }
 
 /*
@@ -617,6 +709,12 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
 
        td->mutex = fio_mutex_init(0);
 
+       td->ts.clat_percentiles = td->o.clat_percentiles;
+       if (td->o.overwrite_plist)
+               td->ts.percentile_list = td->o.percentile_list;
+       else
+               td->ts.percentile_list = NULL;
+
        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.lat_stat[0].min_val = td->ts.lat_stat[1].min_val = ULONG_MAX;
@@ -638,12 +736,12 @@ static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
                goto err;
 
        if (td->o.write_lat_log) {
-               setup_log(&td->ts.lat_log);
-               setup_log(&td->ts.slat_log);
-               setup_log(&td->ts.clat_log);
+               setup_log(&td->lat_log);
+               setup_log(&td->slat_log);
+               setup_log(&td->clat_log);
        }
        if (td->o.write_bw_log)
-               setup_log(&td->ts.bw_log);
+               setup_log(&td->bw_log);
 
        if (!td->o.name)
                td->o.name = strdup(jobname);
@@ -786,7 +884,7 @@ static int is_empty_or_comment(char *line)
 /*
  * This is our [ini] type file parser.
  */
-static int parse_jobs_ini(char *file, int stonewall_flag)
+int parse_jobs_ini(char *file, int is_buf, int stonewall_flag)
 {
        unsigned int global;
        struct thread_data *td;
@@ -800,14 +898,18 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
        char **opts;
        int i, alloc_opts, num_opts;
 
-       if (!strcmp(file, "-"))
-               f = stdin;
-       else
-               f = fopen(file, "r");
+       if (is_buf)
+               f = NULL;
+       else {
+               if (!strcmp(file, "-"))
+                       f = stdin;
+               else
+                       f = fopen(file, "r");
 
-       if (!f) {
-               perror("fopen job file");
-               return 1;
+               if (!f) {
+                       perror("fopen job file");
+                       return 1;
+               }
        }
 
        string = malloc(4096);
@@ -829,7 +931,10 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
                 * haven't handled.
                 */
                if (!skip_fgets) {
-                       p = fgets(string, 4095, f);
+                       if (is_buf)
+                               p = strsep(&file, "\n");
+                       else
+                               p = fgets(string, 4095, f);
                        if (!p)
                                break;
                }
@@ -883,7 +988,14 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
                num_opts = 0;
                memset(opts, 0, alloc_opts * sizeof(char *));
 
-               while ((p = fgets(string, 4096, f)) != NULL) {
+               while (1) {
+                       if (is_buf)
+                               p = strsep(&file, "\n");
+                       else
+                               p = fgets(string, 4096, f);
+                       if (!p)
+                               break;
+
                        if (is_empty_or_comment(p))
                                continue;
 
@@ -936,7 +1048,7 @@ static int parse_jobs_ini(char *file, int stonewall_flag)
        free(string);
        free(name);
        free(opts);
-       if (f != stdin)
+       if (!is_buf && f != stdin)
                fclose(f);
        return ret;
 }
@@ -951,79 +1063,12 @@ static int fill_def_thread(void)
         * fill default options
         */
        fio_fill_default_options(&def_thread);
-
-       def_thread.o.timeout = def_timeout;
-       return 0;
-}
-
-static void free_shm(void)
-{
-       struct shmid_ds sbuf;
-
-       if (threads) {
-               void *tp = threads;
-
-               threads = NULL;
-               file_hash_exit();
-               fio_debug_jobp = NULL;
-               shmdt(tp);
-               shmctl(shm_id, IPC_RMID, &sbuf);
-       }
-
-       scleanup();
-}
-
-/*
- * The thread area is shared between the main process and the job
- * threads/processes. So setup a shared memory segment that will hold
- * all the job info. We use the end of the region for keeping track of
- * open files across jobs, for file sharing.
- */
-static int setup_thread_area(void)
-{
-       void *hash;
-
-       /*
-        * 1024 is too much on some machines, scale max_jobs if
-        * we get a failure that looks like too large a shm segment
-        */
-       do {
-               size_t size = max_jobs * sizeof(struct thread_data);
-
-               size += file_hash_size;
-               size += sizeof(unsigned int);
-
-               shm_id = shmget(0, size, IPC_CREAT | 0600);
-               if (shm_id != -1)
-                       break;
-               if (errno != EINVAL) {
-                       perror("shmget");
-                       break;
-               }
-
-               max_jobs >>= 1;
-       } while (max_jobs);
-
-       if (shm_id == -1)
-               return 1;
-
-       threads = shmat(shm_id, NULL, 0);
-       if (threads == (void *) -1) {
-               perror("shmat");
-               return 1;
-       }
-
-       memset(threads, 0, max_jobs * sizeof(struct thread_data));
-       hash = (void *) threads + max_jobs * sizeof(struct thread_data);
-       fio_debug_jobp = (void *) hash + file_hash_size;
-       *fio_debug_jobp = -1;
-       file_hash_init(hash);
-       atexit(free_shm);
        return 0;
 }
 
 static void usage(const char *name)
 {
+       printf("%s\n", fio_version_string);
        printf("%s [options] [job options] <job file(s)>\n", name);
        printf("\t--debug=options\tEnable debug logging\n");
        printf("\t--output\tWrite output to file\n");
@@ -1032,6 +1077,7 @@ static void usage(const char *name)
        printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
        printf("\t--minimal\tMinimal (terse) output\n");
        printf("\t--version\tPrint version info and exit\n");
+       printf("\t--terse-version=x Terse version output format\n");
        printf("\t--help\t\tPrint this page\n");
        printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of"
                " them\n");
@@ -1045,6 +1091,9 @@ static void usage(const char *name)
                " (def 1024)\n");
        printf("\t--warnings-fatal Fio parser warnings are fatal\n");
        printf("\t--max-jobs\tMaximum number of threads/processes to support\n");
+       printf("\t--server\tStart a backend fio server\n");
+       printf("\t--client=hostname Talk to remove backend fio server at hostname\n");
+       printf("\t--net-port=port\tUse specified port for client/server connection\n");
        printf("\nFio was written by Jens Axboe <jens.axboe@oracle.com>");
        printf("\n                   Jens Axboe <jaxboe@fusionio.com>\n");
 }
@@ -1064,6 +1113,7 @@ struct debug_level debug_levels[] = {
        { .name = "mutex",      .shift = FD_MUTEX },
        { .name = "profile",    .shift = FD_PROFILE },
        { .name = "time",       .shift = FD_TIME },
+       { .name = "net",        .shift = FD_NET },
        { .name = NULL, },
 };
 
@@ -1153,6 +1203,7 @@ static int parse_cmd_line(int argc, char *argv[])
        struct thread_data *td = NULL;
        int c, ini_idx = 0, lidx, ret = 0, do_exit = 0, exit_val = 0;
        char *ostr = cmd_optstr;
+       int daemonize_server = 0;
 
        while ((c = getopt_long_only(argc, argv, ostr, l_opts, &lidx)) != -1) {
                switch (c) {
@@ -1160,7 +1211,7 @@ static int parse_cmd_line(int argc, char *argv[])
                        smalloc_pool_size = atoi(optarg);
                        break;
                case 't':
-                       def_timeout = atoi(optarg);
+                       def_thread.o.timeout = atoi(optarg);
                        break;
                case 'l':
                        write_lat_log = 1;
@@ -1193,6 +1244,14 @@ static int parse_cmd_line(int argc, char *argv[])
                case 'v':
                        log_info("%s\n", fio_version_string);
                        exit(0);
+               case 'V':
+                       terse_version = atoi(optarg);
+                       if (terse_version != 2) {
+                               log_err("fio: bad terse version format\n");
+                               exit_val = 1;
+                               do_exit++;
+                       }
+                       break;
                case 'e':
                        if (!strcmp("always", optarg))
                                eta_print = FIO_ETA_ALWAYS;
@@ -1261,16 +1320,51 @@ static int parse_cmd_line(int argc, char *argv[])
                                exit_val = 1;
                        }
                        break;
+               case 'S':
+                       if (nr_clients) {
+                               log_err("fio: can't be both client and server\n");
+                               do_exit++;
+                               exit_val = 1;
+                               break;
+                       }
+                       is_backend = 1;
+                       break;
+               case 'D':
+                       daemonize_server = 1;
+                       break;
+               case 'P':
+                       fio_net_port = atoi(optarg);
+                       break;
+               case 'C':
+                       if (is_backend) {
+                               log_err("fio: can't be both client and server\n");
+                               do_exit++;
+                               exit_val = 1;
+                               break;
+                       }
+                       fio_client_add(optarg);
+                       break;
                default:
                        do_exit++;
                        exit_val = 1;
                        break;
                }
+               if (do_exit)
+                       break;
        }
 
        if (do_exit)
                exit(exit_val);
 
+       if (nr_clients && fio_clients_connect()) {
+               do_exit++;
+               exit_val = 1;
+               return -1;
+       }
+
+       if (is_backend)
+               return fio_start_server(daemonize_server);
+
        if (td) {
                if (!ret)
                        ret = add_job(td, td->o.name ?: "fio", 0);
@@ -1296,19 +1390,27 @@ int parse_options(int argc, char *argv[])
        fio_options_fill_optstring();
        fio_options_dup_and_init(l_opts);
 
-       if (setup_thread_area())
-               return 1;
+       atexit(free_shm);
+
        if (fill_def_thread())
                return 1;
 
        job_files = parse_cmd_line(argc, argv);
 
-       for (i = 0; i < job_files; i++) {
-               if (fill_def_thread())
-                       return 1;
-               if (parse_jobs_ini(ini_file[i], i))
-                       return 1;
-               free(ini_file[i]);
+       if (job_files > 0) {
+               for (i = 0; i < job_files; i++) {
+                       if (fill_def_thread())
+                               return 1;
+                       if (nr_clients) {
+                               if (fio_clients_send_ini(ini_file[i]))
+                                       return 1;
+                               free(ini_file[i]);
+                       } else if (!is_backend) {
+                               if (parse_jobs_ini(ini_file[i], 0, i))
+                                       return 1;
+                               free(ini_file[i]);
+                       }
+               }
        }
 
        free(ini_file);
@@ -1319,9 +1421,13 @@ int parse_options(int argc, char *argv[])
                        return 0;
                if (exec_profile)
                        return 0;
+               if (is_backend || nr_clients)
+                       return 0;
 
-               log_err("No jobs(s) defined\n\n");
-               usage(argv[0]);
+               if (job_files > 0) {
+                       log_err("No jobs(s) defined\n\n");
+                       usage(argv[0]);
+               }
                return 1;
        }