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