client.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <limits.h>
   5 #include <errno.h>
   6 #include <fcntl.h>
   7 #include <sys/poll.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <sys/wait.h>
  11 #include <sys/socket.h>
  12 #include <sys/un.h>
  13 #include <netinet/in.h>
  14 #include <arpa/inet.h>
  15 #include <netdb.h>
  16 #include <signal.h>
  17
  18 #include "fio.h"
  19 #include "server.h"
  20 #include "flist.h"
  21 #include "hash.h"
  22
  23 struct fio_client {
  24         struct flist_head list;
  25         struct flist_head hash_list;
  26         struct sockaddr_in addr;
  27         struct sockaddr_un addr_un;
  28         char *hostname;
  29         int port;
  30         int fd;
  31
  32         int state;
  33         int skip_newline;
  34         int is_sock;
  35
  36         uint16_t argc;
  37         char **argv;
  38 };
  39
  40 enum {
  41         Client_created          = 0,
  42         Client_connected        = 1,
  43         Client_started          = 2,
  44         Client_stopped          = 3,
  45         Client_exited           = 4,
  46 };
  47
  48 static FLIST_HEAD(client_list);
  49
  50 #define FIO_CLIENT_HASH_BITS    7
  51 #define FIO_CLIENT_HASH_SZ      (1 << FIO_CLIENT_HASH_BITS)
  52 #define FIO_CLIENT_HASH_MASK    (FIO_CLIENT_HASH_SZ - 1)
  53 static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
  54
  55 static int handle_client(struct fio_client *client);
  56
  57 static void fio_client_add_hash(struct fio_client *client)
  58 {
  59         int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
  60
  61         bucket &= FIO_CLIENT_HASH_MASK;
  62         flist_add(&client->hash_list, &client_hash[bucket]);
  63 }
  64
  65 static void fio_client_remove_hash(struct fio_client *client)
  66 {
  67         if (!flist_empty(&client->hash_list))
  68                 flist_del_init(&client->hash_list);
  69 }
  70
  71 static void fio_init fio_client_hash_init(void)
  72 {
  73         int i;
  74
  75         for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
  76                 INIT_FLIST_HEAD(&client_hash[i]);
  77 }
  78
  79 static struct fio_client *find_client_by_fd(int fd)
  80 {
  81         int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
  82         struct fio_client *client;
  83         struct flist_head *entry;
  84
  85         flist_for_each(entry, &client_hash[bucket]) {
  86                 client = flist_entry(entry, struct fio_client, hash_list);
  87
  88                 if (client->fd == fd)
  89                         return client;
  90         }
  91
  92         return NULL;
  93 }
  94
  95 static void remove_client(struct fio_client *client)
  96 {
  97         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
  98         flist_del(&client->list);
  99
 100         fio_client_remove_hash(client);
 101
 102         free(client->hostname);
 103         if (client->argv)
 104                 free(client->argv);
 105
 106         free(client);
 107         nr_clients--;
 108 }
 109
 110 static int __fio_client_add_cmd_option(struct fio_client *client,
 111                                        const char *opt)
 112 {
 113         int index;
 114
 115         if (client->argc == FIO_NET_CMD_JOBLINE_ARGV) {
 116                 log_err("fio: max cmd line number reached.\n");
 117                 log_err("fio: cmd line <%s> has been ignored.\n", opt);
 118                 return 1;
 119         }
 120
 121         index = client->argc++;
 122         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
 123         client->argv[index] = strdup(opt);
 124         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
 125         return 0;
 126 }
 127
 128 int fio_client_add_cmd_option(void *cookie, const char *opt)
 129 {
 130         struct fio_client *client = cookie;
 131
 132         if (!client || !opt)
 133                 return 0;
 134
 135         return __fio_client_add_cmd_option(client, opt);
 136 }
 137
 138 int fio_client_add(const char *hostname, void **cookie)
 139 {
 140         struct fio_client *client;
 141
 142         client = malloc(sizeof(*client));
 143         memset(client, 0, sizeof(*client));
 144
 145         INIT_FLIST_HEAD(&client->list);
 146         INIT_FLIST_HEAD(&client->hash_list);
 147
 148         if (fio_server_parse_string(hostname, &client->hostname,
 149                                         &client->is_sock, &client->port,
 150                                         &client->addr.sin_addr))
 151                 return -1;
 152
 153         printf("%s %d %d\n", client->hostname, client->is_sock, client->port);
 154
 155         client->fd = -1;
 156
 157         __fio_client_add_cmd_option(client, "fio");
 158
 159         flist_add(&client->list, &client_list);
 160         nr_clients++;
 161         dprint(FD_NET, "client: added <%s>\n", client->hostname);
 162         *cookie = client;
 163         return 0;
 164 }
 165
 166 static int fio_client_connect_ip(struct fio_client *client)
 167 {
 168         int fd;
 169
 170         client->addr.sin_family = AF_INET;
 171         client->addr.sin_port = htons(client->port);
 172
 173         fd = socket(AF_INET, SOCK_STREAM, 0);
 174         if (fd < 0) {
 175                 log_err("fio: socket: %s\n", strerror(errno));
 176                 return -1;
 177         }
 178
 179         if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
 180                 log_err("fio: connect: %s\n", strerror(errno));
 181                 log_err("fio: failed to connect to %s\n", client->hostname);
 182                 close(fd);
 183                 return -1;
 184         }
 185
 186         return fd;
 187 }
 188
 189 static int fio_client_connect_sock(struct fio_client *client)
 190 {
 191         struct sockaddr_un *addr = &client->addr_un;
 192         fio_socklen_t len;
 193         int fd;
 194
 195         memset(addr, 0, sizeof(*addr));
 196         addr->sun_family = AF_UNIX;
 197         strcpy(addr->sun_path, client->hostname);
 198
 199         fd = socket(AF_UNIX, SOCK_STREAM, 0);
 200         if (fd < 0) {
 201                 log_err("fio: socket: %s\n", strerror(errno));
 202                 return -1;
 203         }
 204
 205         len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
 206         if (connect(fd, (struct sockaddr *) addr, len) < 0) {
 207                 log_err("fio: connect; %s\n", strerror(errno));
 208                 close(fd);
 209                 return -1;
 210         }
 211
 212         return fd;
 213 }
 214
 215 static int fio_client_connect(struct fio_client *client)
 216 {
 217         int fd;
 218
 219         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
 220
 221         memset(&client->addr, 0, sizeof(client->addr));
 222
 223         if (client->is_sock)
 224                 fd = fio_client_connect_sock(client);
 225         else
 226                 fd = fio_client_connect_ip(client);
 227
 228         if (fd < 0)
 229                 return 1;
 230
 231         client->fd = fd;
 232         fio_client_add_hash(client);
 233         client->state = Client_connected;
 234         return 0;
 235 }
 236
 237 void fio_clients_terminate(void)
 238 {
 239         struct flist_head *entry;
 240         struct fio_client *client;
 241
 242         dprint(FD_NET, "client: terminate clients\n");
 243
 244         flist_for_each(entry, &client_list) {
 245                 client = flist_entry(entry, struct fio_client, list);
 246
 247                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
 248         }
 249 }
 250
 251 static void sig_int(int sig)
 252 {
 253         dprint(FD_NET, "client: got signal %d\n", sig);
 254         fio_clients_terminate();
 255 }
 256
 257 static void client_signal_handler(void)
 258 {
 259         struct sigaction act;
 260
 261         memset(&act, 0, sizeof(act));
 262         act.sa_handler = sig_int;
 263         act.sa_flags = SA_RESTART;
 264         sigaction(SIGINT, &act, NULL);
 265
 266         memset(&act, 0, sizeof(act));
 267         act.sa_handler = sig_int;
 268         act.sa_flags = SA_RESTART;
 269         sigaction(SIGTERM, &act, NULL);
 270 }
 271
 272 static void probe_client(struct fio_client *client)
 273 {
 274         dprint(FD_NET, "client: send probe\n");
 275
 276         fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
 277         handle_client(client);
 278 }
 279
 280 static int send_client_cmd_line(struct fio_client *client)
 281 {
 282         struct cmd_line_pdu *pdu;
 283         int i, ret;
 284
 285         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
 286
 287         pdu = malloc(sizeof(*pdu));
 288         for (i = 0; i < client->argc; i++)
 289                 strcpy((char *) pdu->argv[i], client->argv[i]);
 290
 291         pdu->argc = cpu_to_le16(client->argc);
 292         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
 293         free(pdu);
 294         return ret;
 295 }
 296
 297 int fio_clients_connect(void)
 298 {
 299         struct fio_client *client;
 300         struct flist_head *entry, *tmp;
 301         int ret;
 302
 303         dprint(FD_NET, "client: connect all\n");
 304
 305         client_signal_handler();
 306
 307         flist_for_each_safe(entry, tmp, &client_list) {
 308                 client = flist_entry(entry, struct fio_client, list);
 309
 310                 ret = fio_client_connect(client);
 311                 if (ret) {
 312                         remove_client(client);
 313                         continue;
 314                 }
 315
 316                 probe_client(client);
 317
 318                 if (client->argc > 1)
 319                         send_client_cmd_line(client);
 320         }
 321
 322         return !nr_clients;
 323 }
 324
 325 /*
 326  * Send file contents to server backend. We could use sendfile(), but to remain
 327  * more portable lets just read/write the darn thing.
 328  */
 329 static int fio_client_send_ini(struct fio_client *client, const char *filename)
 330 {
 331         struct stat sb;
 332         char *p, *buf;
 333         off_t len;
 334         int fd, ret;
 335
 336         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
 337
 338         fd = open(filename, O_RDONLY);
 339         if (fd < 0) {
 340                 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
 341                 return 1;
 342         }
 343
 344         if (fstat(fd, &sb) < 0) {
 345                 log_err("fio: job file stat: %s\n", strerror(errno));
 346                 close(fd);
 347                 return 1;
 348         }
 349
 350         buf = malloc(sb.st_size);
 351
 352         len = sb.st_size;
 353         p = buf;
 354         do {
 355                 ret = read(fd, p, len);
 356                 if (ret > 0) {
 357                         len -= ret;
 358                         if (!len)
 359                                 break;
 360                         p += ret;
 361                         continue;
 362                 } else if (!ret)
 363                         break;
 364                 else if (errno == EAGAIN || errno == EINTR)
 365                         continue;
 366         } while (1);
 367
 368         if (len) {
 369                 log_err("fio: failed reading job file %s\n", filename);
 370                 close(fd);
 371                 return 1;
 372         }
 373
 374         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
 375         free(buf);
 376         close(fd);
 377         return ret;
 378 }
 379
 380 int fio_clients_send_ini(const char *filename)
 381 {
 382         struct fio_client *client;
 383         struct flist_head *entry, *tmp;
 384
 385         flist_for_each_safe(entry, tmp, &client_list) {
 386                 client = flist_entry(entry, struct fio_client, list);
 387
 388                 if (fio_client_send_ini(client, filename))
 389                         remove_client(client);
 390         }
 391
 392         return !nr_clients;
 393 }
 394
 395 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
 396 {
 397         dst->max_val    = le64_to_cpu(src->max_val);
 398         dst->min_val    = le64_to_cpu(src->min_val);
 399         dst->samples    = le64_to_cpu(src->samples);
 400
 401         /*
 402          * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
 403          */
 404         dst->mean.u.f   = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
 405         dst->S.u.f      = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
 406 }
 407
 408 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
 409 {
 410         int i, j;
 411
 412         dst->error      = le32_to_cpu(src->error);
 413         dst->groupid    = le32_to_cpu(src->groupid);
 414         dst->pid        = le32_to_cpu(src->pid);
 415         dst->members    = le32_to_cpu(src->members);
 416
 417         for (i = 0; i < 2; i++) {
 418                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
 419                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
 420                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
 421                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
 422         }
 423
 424         dst->usr_time           = le64_to_cpu(src->usr_time);
 425         dst->sys_time           = le64_to_cpu(src->sys_time);
 426         dst->ctx                = le64_to_cpu(src->ctx);
 427         dst->minf               = le64_to_cpu(src->minf);
 428         dst->majf               = le64_to_cpu(src->majf);
 429         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
 430
 431         for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
 432                 fio_fp64_t *fps = &src->percentile_list[i];
 433                 fio_fp64_t *fpd = &dst->percentile_list[i];
 434
 435                 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
 436         }
 437
 438         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 439                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
 440                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
 441                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
 442         }
 443
 444         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
 445                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
 446                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
 447         }
 448
 449         for (i = 0; i < 2; i++)
 450                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
 451                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
 452
 453         for (i = 0; i < 3; i++) {
 454                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
 455                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
 456         }
 457
 458         dst->total_submit       = le64_to_cpu(src->total_submit);
 459         dst->total_complete     = le64_to_cpu(src->total_complete);
 460
 461         for (i = 0; i < 2; i++) {
 462                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
 463                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
 464         }
 465
 466         dst->total_run_time     = le64_to_cpu(src->total_run_time);
 467         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
 468         dst->total_err_count    = le64_to_cpu(src->total_err_count);
 469         dst->first_error        = le32_to_cpu(src->first_error);
 470         dst->kb_base            = le32_to_cpu(src->kb_base);
 471 }
 472
 473 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
 474 {
 475         int i;
 476
 477         for (i = 0; i < 2; i++) {
 478                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
 479                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
 480                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
 481                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
 482                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
 483                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
 484         }
 485
 486         dst->kb_base    = le32_to_cpu(src->kb_base);
 487         dst->groupid    = le32_to_cpu(src->groupid);
 488 }
 489
 490 static void handle_ts(struct fio_net_cmd *cmd)
 491 {
 492         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
 493
 494         convert_ts(&p->ts, &p->ts);
 495         convert_gs(&p->rs, &p->rs);
 496
 497         show_thread_status(&p->ts, &p->rs);
 498 }
 499
 500 static void handle_gs(struct fio_net_cmd *cmd)
 501 {
 502         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
 503
 504         convert_gs(gs, gs);
 505         show_group_stats(gs);
 506 }
 507
 508 static void handle_eta(struct fio_net_cmd *cmd)
 509 {
 510         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
 511         int i;
 512
 513         je->nr_running          = le32_to_cpu(je->nr_running);
 514         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
 515         je->nr_pending          = le32_to_cpu(je->nr_pending);
 516         je->files_open          = le32_to_cpu(je->files_open);
 517         je->m_rate              = le32_to_cpu(je->m_rate);
 518         je->t_rate              = le32_to_cpu(je->t_rate);
 519         je->m_iops              = le32_to_cpu(je->m_iops);
 520         je->t_iops              = le32_to_cpu(je->t_iops);
 521
 522         for (i = 0; i < 2; i++) {
 523                 je->rate[i]     = le32_to_cpu(je->rate[i]);
 524                 je->iops[i]     = le32_to_cpu(je->iops[i]);
 525         }
 526
 527         je->elapsed_sec         = le32_to_cpu(je->nr_running);
 528         je->eta_sec             = le64_to_cpu(je->eta_sec);
 529
 530         display_thread_status(je);
 531 }
 532
 533 static void handle_probe(struct fio_net_cmd *cmd)
 534 {
 535         struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
 536
 537         log_info("Probe: hostname=%s, be=%u, fio ver %u.%u.%u\n",
 538                 probe->hostname, probe->bigendian, probe->fio_major,
 539                 probe->fio_minor, probe->fio_patch);
 540 }
 541
 542 static int handle_client(struct fio_client *client)
 543 {
 544         struct fio_net_cmd *cmd;
 545
 546         dprint(FD_NET, "client: handle %s\n", client->hostname);
 547
 548         cmd = fio_net_recv_cmd(client->fd);
 549         if (!cmd)
 550                 return 0;
 551
 552         dprint(FD_NET, "client: got cmd op %d from %s\n",
 553                                         cmd->opcode, client->hostname);
 554
 555         switch (cmd->opcode) {
 556         case FIO_NET_CMD_QUIT:
 557                 remove_client(client);
 558                 free(cmd);
 559                 break;
 560         case FIO_NET_CMD_TEXT: {
 561                 const char *buf = (const char *) cmd->payload;
 562                 int fio_unused ret;
 563
 564                 if (!client->skip_newline)
 565                         fprintf(f_out, "<%s> ", client->hostname);
 566                 ret = fwrite(buf, cmd->pdu_len, 1, f_out);
 567                 fflush(f_out);
 568                 client->skip_newline = strchr(buf, '\n') == NULL;
 569                 free(cmd);
 570                 break;
 571                 }
 572         case FIO_NET_CMD_TS:
 573                 handle_ts(cmd);
 574                 free(cmd);
 575                 break;
 576         case FIO_NET_CMD_GS:
 577                 handle_gs(cmd);
 578                 free(cmd);
 579                 break;
 580         case FIO_NET_CMD_ETA:
 581                 handle_eta(cmd);
 582                 free(cmd);
 583                 break;
 584         case FIO_NET_CMD_PROBE:
 585                 handle_probe(cmd);
 586                 free(cmd);
 587                 break;
 588         case FIO_NET_CMD_START:
 589                 client->state = Client_started;
 590                 free(cmd);
 591                 break;
 592         case FIO_NET_CMD_STOP:
 593                 client->state = Client_stopped;
 594                 free(cmd);
 595                 break;
 596         default:
 597                 log_err("fio: unknown client op: %d\n", cmd->opcode);
 598                 free(cmd);
 599                 break;
 600         }
 601
 602         return 1;
 603 }
 604
 605 int fio_handle_clients(void)
 606 {
 607         struct fio_client *client;
 608         struct flist_head *entry;
 609         struct pollfd *pfds;
 610         int i, ret = 0;
 611
 612         pfds = malloc(nr_clients * sizeof(struct pollfd));
 613
 614         while (!exit_backend && nr_clients) {
 615                 i = 0;
 616                 flist_for_each(entry, &client_list) {
 617                         client = flist_entry(entry, struct fio_client, list);
 618
 619                         pfds[i].fd = client->fd;
 620                         pfds[i].events = POLLIN;
 621                         i++;
 622                 }
 623
 624                 assert(i == nr_clients);
 625
 626                 do {
 627                         ret = poll(pfds, nr_clients, 100);
 628                         if (ret < 0) {
 629                                 if (errno == EINTR)
 630                                         continue;
 631                                 log_err("fio: poll clients: %s\n", strerror(errno));
 632                                 break;
 633                         } else if (!ret)
 634                                 continue;
 635                 } while (ret <= 0);
 636
 637                 for (i = 0; i < nr_clients; i++) {
 638                         if (!(pfds[i].revents & POLLIN))
 639                                 continue;
 640
 641                         client = find_client_by_fd(pfds[i].fd);
 642                         if (!client) {
 643                                 log_err("fio: unknown client fd %d\n", pfds[i].fd);
 644                                 continue;
 645                         }
 646                         if (!handle_client(client)) {
 647                                 log_info("client: host=%s disconnected\n",
 648                                                 client->hostname);
 649                                 remove_client(client);
 650                         }
 651                 }
 652         }
 653
 654         free(pfds);
 655         return 0;
 656 }