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