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