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/mman.h>
  12 #include <netinet/in.h>
  13 #include <arpa/inet.h>
  14 #include <netdb.h>
  15
  16 #include "fio.h"
  17 #include "server.h"
  18 #include "crc/crc32.h"
  19 #include "flist.h"
  20
  21 struct fio_client {
  22         struct flist_head list;
  23         struct sockaddr_in addr;
  24         char *hostname;
  25         int fd;
  26
  27         int state;
  28         int skip_newline;
  29
  30         uint16_t argc;
  31         char **argv;
  32 };
  33
  34 enum {
  35         Client_created          = 0,
  36         Client_connected        = 1,
  37         Client_started          = 2,
  38         Client_stopped          = 3,
  39         Client_exited           = 4,
  40 };
  41
  42 static FLIST_HEAD(client_list);
  43
  44 static int handle_client(struct fio_client *client, int one);
  45
  46 static struct fio_client *find_client_by_fd(int fd)
  47 {
  48         struct fio_client *client;
  49         struct flist_head *entry;
  50
  51         flist_for_each(entry, &client_list) {
  52                 client = flist_entry(entry, struct fio_client, list);
  53
  54                 if (client->fd == fd)
  55                         return client;
  56         }
  57
  58         return NULL;
  59 }
  60
  61 static struct fio_client *find_client_by_name(const char *name)
  62 {
  63         struct fio_client *client;
  64         struct flist_head *entry;
  65
  66         flist_for_each(entry, &client_list) {
  67                 client = flist_entry(entry, struct fio_client, list);
  68
  69                 if (!strcmp(name, client->hostname))
  70                         return client;
  71         }
  72
  73         return NULL;
  74 }
  75
  76 static void remove_client(struct fio_client *client)
  77 {
  78         dprint(FD_NET, "client: removed <%s>\n", client->hostname);
  79         flist_del(&client->list);
  80         nr_clients--;
  81
  82         free(client->hostname);
  83         if (client->argv)
  84                 free(client->argv);
  85
  86         free(client);
  87 }
  88
  89 static void __fio_client_add_cmd_option(struct fio_client *client,
  90                                         const char *opt)
  91 {
  92         int index;
  93
  94         index = client->argc++;
  95         client->argv = realloc(client->argv, sizeof(char *) * client->argc);
  96         client->argv[index] = strdup(opt);
  97         dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
  98 }
  99
 100 void fio_client_add_cmd_option(const char *hostname, const char *opt)
 101 {
 102         struct fio_client *client;
 103
 104         if (!hostname || !opt)
 105                 return;
 106
 107         client = find_client_by_name(hostname);
 108         if (!client) {
 109                 log_err("fio: unknown client %s\n", hostname);
 110                 return;
 111         }
 112
 113         __fio_client_add_cmd_option(client, opt);
 114 }
 115
 116 void fio_client_add(const char *hostname)
 117 {
 118         struct fio_client *client;
 119
 120         dprint(FD_NET, "client: added  <%s>\n", hostname);
 121         client = malloc(sizeof(*client));
 122         memset(client, 0, sizeof(*client));
 123
 124         client->hostname = strdup(hostname);
 125         client->fd = -1;
 126
 127         __fio_client_add_cmd_option(client, "fio");
 128
 129         flist_add(&client->list, &client_list);
 130         nr_clients++;
 131 }
 132
 133 static int fio_client_connect(struct fio_client *client)
 134 {
 135         int fd;
 136
 137         dprint(FD_NET, "client: connect to host %s\n", client->hostname);
 138
 139         memset(&client->addr, 0, sizeof(client->addr));
 140         client->addr.sin_family = AF_INET;
 141         client->addr.sin_port = htons(fio_net_port);
 142
 143         if (inet_aton(client->hostname, &client->addr.sin_addr) != 1) {
 144                 struct hostent *hent;
 145
 146                 hent = gethostbyname(client->hostname);
 147                 if (!hent) {
 148                         log_err("fio: gethostbyname: %s\n", strerror(errno));
 149                         return 1;
 150                 }
 151
 152                 memcpy(&client->addr.sin_addr, hent->h_addr, 4);
 153         }
 154
 155         fd = socket(AF_INET, SOCK_STREAM, 0);
 156         if (fd < 0) {
 157                 log_err("fio: socket: %s\n", strerror(errno));
 158                 return 1;
 159         }
 160
 161         if (connect(fd, (struct sockaddr *) &client->addr, sizeof(client->addr)) < 0) {
 162                 log_err("fio: connect: %s\n", strerror(errno));
 163                 log_err("fio: failed to connect to %s\n", client->hostname);
 164                 return 1;
 165         }
 166
 167         client->fd = fd;
 168         client->state = Client_connected;
 169         return 0;
 170 }
 171
 172 void fio_clients_terminate(void)
 173 {
 174         struct flist_head *entry;
 175         struct fio_client *client;
 176
 177         dprint(FD_NET, "client: terminate clients\n");
 178
 179         flist_for_each(entry, &client_list) {
 180                 client = flist_entry(entry, struct fio_client, list);
 181
 182                 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_QUIT, 0);
 183         }
 184 }
 185
 186 static void sig_int(int sig)
 187 {
 188         dprint(FD_NET, "client: got sign %d\n", sig);
 189         fio_clients_terminate();
 190 }
 191
 192 static void client_signal_handler(void)
 193 {
 194         struct sigaction act;
 195
 196         memset(&act, 0, sizeof(act));
 197         act.sa_handler = sig_int;
 198         act.sa_flags = SA_RESTART;
 199         sigaction(SIGINT, &act, NULL);
 200
 201         memset(&act, 0, sizeof(act));
 202         act.sa_handler = sig_int;
 203         act.sa_flags = SA_RESTART;
 204         sigaction(SIGTERM, &act, NULL);
 205 }
 206
 207 static void probe_client(struct fio_client *client)
 208 {
 209         dprint(FD_NET, "client: send probe\n");
 210
 211         fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0);
 212         handle_client(client, 1);
 213 }
 214
 215 static int send_client_cmd_line(struct fio_client *client)
 216 {
 217         struct cmd_line_pdu *pdu;
 218         int i, ret;
 219
 220         dprint(FD_NET, "client: send cmdline %d\n", client->argc);
 221
 222         pdu = malloc(sizeof(*pdu));
 223         for (i = 0; i < client->argc; i++)
 224                 strcpy((char *) pdu->argv[i], client->argv[i]);
 225
 226         pdu->argc = cpu_to_le16(client->argc);
 227         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, sizeof(*pdu));
 228         free(pdu);
 229         return ret;
 230 }
 231
 232 int fio_clients_connect(void)
 233 {
 234         struct fio_client *client;
 235         struct flist_head *entry, *tmp;
 236         int ret;
 237
 238         dprint(FD_NET, "client: connect all\n");
 239
 240         client_signal_handler();
 241
 242         flist_for_each_safe(entry, tmp, &client_list) {
 243                 client = flist_entry(entry, struct fio_client, list);
 244
 245                 ret = fio_client_connect(client);
 246                 if (ret) {
 247                         remove_client(client);
 248                         continue;
 249                 }
 250
 251                 probe_client(client);
 252
 253                 if (client->argc > 1)
 254                         send_client_cmd_line(client);
 255         }
 256
 257         return !nr_clients;
 258 }
 259
 260 /*
 261  * Send file contents to server backend. We could use sendfile(), but to remain
 262  * more portable lets just read/write the darn thing.
 263  */
 264 static int fio_client_send_ini(struct fio_client *client, const char *filename)
 265 {
 266         struct stat sb;
 267         char *p, *buf;
 268         off_t len;
 269         int fd, ret;
 270
 271         dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
 272
 273         fd = open(filename, O_RDONLY);
 274         if (fd < 0) {
 275                 log_err("fio: job file open: %s\n", strerror(errno));
 276                 return 1;
 277         }
 278
 279         if (fstat(fd, &sb) < 0) {
 280                 log_err("fio: job file stat: %s\n", strerror(errno));
 281                 return 1;
 282         }
 283
 284         buf = malloc(sb.st_size);
 285
 286         len = sb.st_size;
 287         p = buf;
 288         do {
 289                 ret = read(fd, p, len);
 290                 if (ret > 0) {
 291                         len -= ret;
 292                         if (!len)
 293                                 break;
 294                         p += ret;
 295                         continue;
 296                 } else if (!ret)
 297                         break;
 298                 else if (errno == EAGAIN || errno == EINTR)
 299                         continue;
 300         } while (1);
 301
 302         if (len) {
 303                 log_err("fio: failed reading job file %s\n", filename);
 304                 return 1;
 305         }
 306
 307         ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, buf, sb.st_size);
 308         free(buf);
 309         return ret;
 310 }
 311
 312 int fio_clients_send_ini(const char *filename)
 313 {
 314         struct fio_client *client;
 315         struct flist_head *entry, *tmp;
 316
 317         flist_for_each_safe(entry, tmp, &client_list) {
 318                 client = flist_entry(entry, struct fio_client, list);
 319
 320                 if (fio_client_send_ini(client, filename))
 321                         remove_client(client);
 322         }
 323
 324         return !nr_clients;
 325 }
 326
 327 static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
 328 {
 329         dst->max_val    = le64_to_cpu(src->max_val);
 330         dst->min_val    = le64_to_cpu(src->min_val);
 331         dst->samples    = le64_to_cpu(src->samples);
 332         /* FIXME */
 333         dst->mean       = __le64_to_cpu(src->mean);
 334         dst->S          = __le64_to_cpu(src->S);
 335 }
 336
 337 static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
 338 {
 339         int i, j;
 340
 341         dst->error      = le32_to_cpu(src->error);
 342         dst->groupid    = le32_to_cpu(src->groupid);
 343         dst->pid        = le32_to_cpu(src->pid);
 344         dst->members    = le32_to_cpu(src->members);
 345
 346         for (i = 0; i < 2; i++) {
 347                 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
 348                 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
 349                 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
 350                 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
 351         }
 352
 353         dst->usr_time           = le64_to_cpu(src->usr_time);
 354         dst->sys_time           = le64_to_cpu(src->sys_time);
 355         dst->ctx                = le64_to_cpu(src->ctx);
 356         dst->minf               = le64_to_cpu(src->minf);
 357         dst->majf               = le64_to_cpu(src->majf);
 358         dst->clat_percentiles   = le64_to_cpu(src->clat_percentiles);
 359         dst->percentile_list    = NULL;
 360
 361         for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
 362                 dst->io_u_map[i]        = le32_to_cpu(src->io_u_map[i]);
 363                 dst->io_u_submit[i]     = le32_to_cpu(src->io_u_submit[i]);
 364                 dst->io_u_complete[i]   = le32_to_cpu(src->io_u_complete[i]);
 365         }
 366
 367         for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
 368                 dst->io_u_lat_u[i]      = le32_to_cpu(src->io_u_lat_u[i]);
 369                 dst->io_u_lat_m[i]      = le32_to_cpu(src->io_u_lat_m[i]);
 370         }
 371
 372         for (i = 0; i < 2; i++)
 373                 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
 374                         dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
 375
 376         for (i = 0; i < 3; i++) {
 377                 dst->total_io_u[i]      = le64_to_cpu(src->total_io_u[i]);
 378                 dst->short_io_u[i]      = le64_to_cpu(src->short_io_u[i]);
 379         }
 380
 381         dst->total_submit       = le64_to_cpu(src->total_submit);
 382         dst->total_complete     = le64_to_cpu(src->total_complete);
 383
 384         for (i = 0; i < 2; i++) {
 385                 dst->io_bytes[i]        = le64_to_cpu(src->io_bytes[i]);
 386                 dst->runtime[i]         = le64_to_cpu(src->runtime[i]);
 387         }
 388
 389         dst->total_run_time     = le64_to_cpu(src->total_run_time);
 390         dst->continue_on_error  = le16_to_cpu(src->continue_on_error);
 391         dst->total_err_count    = le64_to_cpu(src->total_err_count);
 392         dst->first_error        = le32_to_cpu(src->first_error);
 393         dst->kb_base            = le32_to_cpu(src->kb_base);
 394 }
 395
 396 static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
 397 {
 398         int i;
 399
 400         for (i = 0; i < 2; i++) {
 401                 dst->max_run[i]         = le64_to_cpu(src->max_run[i]);
 402                 dst->min_run[i]         = le64_to_cpu(src->min_run[i]);
 403                 dst->max_bw[i]          = le64_to_cpu(src->max_bw[i]);
 404                 dst->min_bw[i]          = le64_to_cpu(src->min_bw[i]);
 405                 dst->io_kb[i]           = le64_to_cpu(src->io_kb[i]);
 406                 dst->agg[i]             = le64_to_cpu(src->agg[i]);
 407         }
 408
 409         dst->kb_base    = le32_to_cpu(src->kb_base);
 410         dst->groupid    = le32_to_cpu(src->groupid);
 411 }
 412
 413 static void handle_ts(struct fio_net_cmd *cmd)
 414 {
 415         struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
 416
 417         convert_ts(&p->ts, &p->ts);
 418         convert_gs(&p->rs, &p->rs);
 419
 420         show_thread_status(&p->ts, &p->rs);
 421 }
 422
 423 static void handle_gs(struct fio_net_cmd *cmd)
 424 {
 425         struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
 426
 427         convert_gs(gs, gs);
 428         show_group_stats(gs);
 429 }
 430
 431 static void handle_eta(struct fio_net_cmd *cmd)
 432 {
 433         struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
 434         int i;
 435
 436         je->nr_running          = le32_to_cpu(je->nr_running);
 437         je->nr_ramp             = le32_to_cpu(je->nr_ramp);
 438         je->nr_pending          = le32_to_cpu(je->nr_pending);
 439         je->files_open          = le32_to_cpu(je->files_open);
 440         je->m_rate              = le32_to_cpu(je->m_rate);
 441         je->t_rate              = le32_to_cpu(je->t_rate);
 442         je->m_iops              = le32_to_cpu(je->m_iops);
 443         je->t_iops              = le32_to_cpu(je->t_iops);
 444
 445         for (i = 0; i < 2; i++) {
 446                 je->rate[i]     = le32_to_cpu(je->rate[i]);
 447                 je->iops[i]     = le32_to_cpu(je->iops[i]);
 448         }
 449
 450         je->elapsed_sec         = le32_to_cpu(je->nr_running);
 451         je->eta_sec             = le64_to_cpu(je->eta_sec);
 452
 453         display_thread_status(je);
 454 }
 455
 456 static void handle_probe(struct fio_net_cmd *cmd)
 457 {
 458         struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
 459
 460         log_info("Probe: hostname=%s, fio ver %u.%u.%u\n", probe->hostname,
 461                         probe->fio_major, probe->fio_minor, probe->fio_patch);
 462 }
 463
 464 static int handle_client(struct fio_client *client, int one)
 465 {
 466         struct fio_net_cmd *cmd;
 467         int done = 0;
 468
 469         dprint(FD_NET, "client: handle %s\n", client->hostname);
 470
 471         while ((cmd = fio_net_recv_cmd(client->fd, 1)) != NULL) {
 472                 dprint(FD_NET, "%s: got cmd op %d\n", client->hostname,
 473                                                         cmd->opcode);
 474
 475                 switch (cmd->opcode) {
 476                 case FIO_NET_CMD_QUIT:
 477                         remove_client(client);
 478                         free(cmd);
 479                         done = 1;
 480                         break;
 481                 case FIO_NET_CMD_TEXT: {
 482                         const char *buf = (const char *) cmd->payload;
 483
 484                         if (!client->skip_newline)
 485                                 fprintf(f_out, "Client <%s>: ", client->hostname);
 486                         fwrite(buf, cmd->pdu_len, 1, f_out);
 487                         fflush(f_out);
 488                         client->skip_newline = strchr(buf, '\n') == NULL;
 489                         free(cmd);
 490                         break;
 491                         }
 492                 case FIO_NET_CMD_TS:
 493                         handle_ts(cmd);
 494                         free(cmd);
 495                         break;
 496                 case FIO_NET_CMD_GS:
 497                         handle_gs(cmd);
 498                         free(cmd);
 499                         break;
 500                 case FIO_NET_CMD_ETA:
 501                         handle_eta(cmd);
 502                         free(cmd);
 503                         break;
 504                 case FIO_NET_CMD_PROBE:
 505                         handle_probe(cmd);
 506                         free(cmd);
 507                         break;
 508                 case FIO_NET_CMD_START:
 509                         client->state = Client_started;
 510                         free(cmd);
 511                         break;
 512                 case FIO_NET_CMD_STOP:
 513                         client->state = Client_stopped;
 514                         free(cmd);
 515                         break;
 516                 default:
 517                         log_err("fio: unknown client op: %d\n", cmd->opcode);
 518                         free(cmd);
 519                         break;
 520                 }
 521
 522                 if (done || one)
 523                         break;
 524         }
 525
 526         return 0;
 527 }
 528
 529 int fio_handle_clients(void)
 530 {
 531         struct fio_client *client;
 532         struct flist_head *entry;
 533         struct pollfd *pfds;
 534         int i, ret = 0;
 535
 536         pfds = malloc(nr_clients * sizeof(struct pollfd));
 537
 538         while (!exit_backend && nr_clients) {
 539                 i = 0;
 540                 flist_for_each(entry, &client_list) {
 541                         client = flist_entry(entry, struct fio_client, list);
 542
 543                         pfds[i].fd = client->fd;
 544                         pfds[i].events = POLLIN;
 545                         i++;
 546                 }
 547
 548                 assert(i == nr_clients);
 549
 550                 do {
 551                         ret = poll(pfds, nr_clients, 100);
 552                         if (ret < 0) {
 553                                 if (errno == EINTR)
 554                                         continue;
 555                                 log_err("fio: poll clients: %s\n", strerror(errno));
 556                                 break;
 557                         } else if (!ret)
 558                                 continue;
 559                 } while (ret <= 0);
 560
 561                 for (i = 0; i < nr_clients; i++) {
 562                         if (!(pfds[i].revents & POLLIN))
 563                                 continue;
 564
 565                         client = find_client_by_fd(pfds[i].fd);
 566                         if (!client) {
 567                                 log_err("fio: unknown client\n");
 568                                 continue;
 569                         }
 570                         handle_client(client, 0);
 571                 }
 572         }
 573
 574         free(pfds);
 575         return 0;
 576 }