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