src/simix/smx_host.c

   1 /* Copyright (c) 2007-2014. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "smx_private.h"
   8 #include "xbt/sysdep.h"
   9 #include "xbt/log.h"
  10 #include "xbt/dict.h"
  11 #include "mc/mc.h"
  12 #include "mc/mc_replay.h"
  13
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
  15                                 "SIMIX hosts");
  16
  17 static void SIMIX_execution_finish(smx_synchro_t synchro);
  18
  19 /**
  20  * \brief Internal function to create a SIMIX host.
  21  * \param name name of the host to create
  22  * \param data some user data (may be NULL)
  23  */
  24 smx_host_t SIMIX_host_create(const char *name, void *data)
  25 {
  26   smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
  27   s_smx_process_t proc;
  28
  29   /* Host structure */
  30   smx_host->process_list =
  31       xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
  32
  33   /* Update global variables */
  34   xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_host);
  35
  36   return xbt_lib_get_elm_or_null(host_lib, name);
  37 }
  38
  39 /**
  40  * \brief Start the host if it is off
  41  *
  42  */
  43 void SIMIX_host_on(smx_host_t h)
  44 {
  45   smx_host_priv_t host = SIMIX_host_priv(h);
  46
  47   xbt_assert((host != NULL), "Invalid parameters");
  48
  49   if (surf_resource_get_state(surf_host_resource_priv(h))==SURF_RESOURCE_OFF) {
  50     surf_resource_set_state(surf_host_resource_priv(h), SURF_RESOURCE_ON);
  51
  52     unsigned int cpt;
  53     smx_process_arg_t arg;
  54     xbt_dynar_foreach(host->boot_processes,cpt,arg) {
  55       smx_process_t process;
  56
  57       char** argv = xbt_new(char*, arg->argc);
  58       for (int i=0; i<arg->argc; i++)
  59         argv[i] = xbt_strdup(arg->argv[i]);
  60
  61       XBT_DEBUG("Booting Process %s(%s) right now", arg->argv[0], arg->hostname);
  62       if (simix_global->create_process_function) {
  63         simix_global->create_process_function(&process,
  64                                               argv[0],
  65                                               arg->code,
  66                                               NULL,
  67                                               arg->hostname,
  68                                               arg->kill_time,
  69                                               arg->argc,
  70                                               argv,
  71                                               arg->properties,
  72                                               arg->auto_restart,
  73                                               NULL);
  74       } else {
  75         simcall_process_create(&process,
  76                                arg->argv[0],
  77                                arg->code,
  78                                NULL,
  79                                arg->hostname,
  80                                arg->kill_time,
  81                                arg->argc,
  82                                argv,
  83                                arg->properties,
  84                                arg->auto_restart);
  85       }
  86     }
  87   }
  88 }
  89
  90 void simcall_HANDLER_host_off(smx_simcall_t simcall, smx_host_t h)
  91 {
  92  SIMIX_host_off(h, simcall->issuer);
  93 }
  94
  95 /**
  96  * \brief Stop the host if it is on
  97  *
  98  */
  99 void SIMIX_host_off(smx_host_t h, smx_process_t issuer)
 100 {
 101   smx_host_priv_t host = SIMIX_host_priv(h);
 102
 103   xbt_assert((host != NULL), "Invalid parameters");
 104
 105   if (surf_resource_get_state(surf_host_resource_priv(h))==SURF_RESOURCE_ON) {
 106         surf_resource_set_state(surf_host_resource_priv(h), SURF_RESOURCE_OFF);
 107
 108     /* Clean Simulator data */
 109     if (xbt_swag_size(host->process_list) != 0) {
 110       smx_process_t process = NULL;
 111       xbt_swag_foreach(process, host->process_list) {
 112         SIMIX_process_kill(process, issuer);
 113         XBT_DEBUG("Killing %s on %s by %s", process->name,  sg_host_name(process->smx_host), issuer->name);
 114       }
 115     }
 116   }
 117 }
 118
 119 /**
 120  * \brief Internal function to destroy a SIMIX host.
 121  *
 122  * \param h the host to destroy (a smx_host_t)
 123  */
 124 void SIMIX_host_destroy(void *h)
 125 {
 126   smx_host_priv_t host = (smx_host_priv_t) h;
 127
 128   xbt_assert((host != NULL), "Invalid parameters");
 129
 130   /* Clean Simulator data */
 131   if (xbt_swag_size(host->process_list) != 0) {
 132     char *msg = xbt_strdup("Shutting down host, but it's not empty:");
 133     char *tmp;
 134     smx_process_t process = NULL;
 135
 136     xbt_swag_foreach(process, host->process_list) {
 137       tmp = bprintf("%s\n\t%s", msg, process->name);
 138       free(msg);
 139       msg = tmp;
 140     }
 141     SIMIX_display_process_status();
 142     THROWF(arg_error, 0, "%s", msg);
 143   }
 144   xbt_dynar_free(&host->auto_restart_processes);
 145   xbt_dynar_free(&host->boot_processes);
 146   xbt_swag_free(host->process_list);
 147
 148   /* Clean host structure */
 149   free(host);
 150   return;
 151 }
 152
 153 smx_host_t SIMIX_host_get_by_name(const char *name){
 154   xbt_assert(((simix_global != NULL)
 155                && (host_lib != NULL)),
 156               "Environment not set yet");
 157
 158   return xbt_lib_get_elm_or_null(host_lib, name);
 159 }
 160
 161 smx_host_t SIMIX_host_self(void)
 162 {
 163   smx_process_t process = SIMIX_process_self();
 164   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
 165 }
 166
 167 /* needs to be public and without simcall because it is called
 168    by exceptions and logging events */
 169 const char* SIMIX_host_self_get_name(void)
 170 {
 171   smx_host_t host = SIMIX_host_self();
 172   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
 173     return "";
 174
 175   return SIMIX_host_get_name(host);
 176 }
 177
 178 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
 179   return surf_resource_get_properties(surf_host_resource_priv(host));
 180 }
 181
 182 double SIMIX_host_get_speed(smx_host_t host){
 183   return surf_host_get_speed(host, 1.0);
 184 }
 185
 186 int SIMIX_host_get_core(smx_host_t host){
 187   return surf_host_get_core(host);
 188 }
 189
 190 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
 191   smx_host_priv_t host_priv = SIMIX_host_priv(host);
 192
 193   return host_priv->process_list;
 194 }
 195
 196
 197 double SIMIX_host_get_available_speed(smx_host_t host){
 198   return surf_host_get_available_speed(host);
 199 }
 200
 201 double SIMIX_host_get_current_power_peak(smx_host_t host) {
 202           return surf_host_get_current_power_peak(host);
 203 }
 204
 205 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
 206           return surf_host_get_power_peak_at(host, pstate_index);
 207 }
 208
 209 int SIMIX_host_get_nb_pstates(smx_host_t host) {
 210           return surf_host_get_nb_pstates(host);
 211 }
 212
 213
 214 void SIMIX_host_set_pstate(smx_host_t host, int pstate_index) {
 215           surf_host_set_pstate(host, pstate_index);
 216 }
 217 int SIMIX_host_get_pstate(smx_host_t host) {
 218           return surf_host_get_pstate(host);
 219 }
 220
 221 double SIMIX_host_get_consumed_energy(smx_host_t host) {
 222           return surf_host_get_consumed_energy(host);
 223 }
 224 double SIMIX_host_get_wattmin_at(smx_host_t host,int pstate) {
 225           return surf_host_get_wattmin_at(host,pstate);
 226 }
 227 double SIMIX_host_get_wattmax_at(smx_host_t host,int pstate) {
 228           return surf_host_get_wattmax_at(host,pstate);
 229 }
 230
 231 int SIMIX_host_get_state(smx_host_t host){
 232   return surf_resource_get_state(surf_host_resource_priv(host));
 233 }
 234
 235 void _SIMIX_host_free_process_arg(void *data)
 236 {
 237   smx_process_arg_t arg = *(void**)data;
 238   int i;
 239   for (i = 0; i < arg->argc; i++)
 240     xbt_free(arg->argv[i]);
 241   xbt_free(arg->argv);
 242   xbt_free(arg->name);
 243   xbt_free(arg);
 244 }
 245 /**
 246  * \brief Add a process to the list of the processes that the host will restart when it comes back
 247  * This function add a process to the list of the processes that will be restarted when the host comes
 248  * back. It is expected that this function is called when the host is down.
 249  * The processes will only be restarted once, meaning that you will have to register the process
 250  * again to restart the process again.
 251  */
 252 void SIMIX_host_add_auto_restart_process(smx_host_t host,
 253                                          const char *name,
 254                                          xbt_main_func_t code,
 255                                          void *data,
 256                                          const char *hostname,
 257                                          double kill_time,
 258                                          int argc, char **argv,
 259                                          xbt_dict_t properties,
 260                                          int auto_restart)
 261 {
 262   if (!SIMIX_host_priv(host)->auto_restart_processes) {
 263     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
 264   }
 265   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
 266   arg->name = xbt_strdup(name);
 267   arg->code = code;
 268   arg->data = data;
 269   arg->hostname = hostname;
 270   arg->kill_time = kill_time;
 271   arg->argc = argc;
 272
 273   arg->argv = xbt_new(char*,argc + 1);
 274
 275   int i;
 276   for (i = 0; i < argc; i++) {
 277     arg->argv[i] = xbt_strdup(argv[i]);
 278   }
 279   arg->argv[argc] = NULL;
 280
 281   arg->properties = properties;
 282   arg->auto_restart = auto_restart;
 283
 284   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
 285       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
 286     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
 287     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
 288   }
 289   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 290 }
 291 /**
 292  * \brief Restart the list of processes that have been registered to the host
 293  */
 294 void SIMIX_host_restart_processes(smx_host_t host)
 295 {
 296   unsigned int cpt;
 297   smx_process_arg_t arg;
 298   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
 299   if (!process_list)
 300     return;
 301
 302   xbt_dynar_foreach (process_list, cpt, arg) {
 303
 304     smx_process_t process;
 305
 306     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
 307     if (simix_global->create_process_function) {
 308       simix_global->create_process_function(&process,
 309                                             arg->argv[0],
 310                                             arg->code,
 311                                             NULL,
 312                                             arg->hostname,
 313                                             arg->kill_time,
 314                                             arg->argc,
 315                                             arg->argv,
 316                                             arg->properties,
 317                                             arg->auto_restart,
 318                                             NULL);
 319     } else {
 320       simcall_process_create(&process,
 321                              arg->argv[0],
 322                              arg->code,
 323                              NULL,
 324                              arg->hostname,
 325                              arg->kill_time,
 326                              arg->argc,
 327                              arg->argv,
 328                              arg->properties,
 329                              arg->auto_restart);
 330
 331     }
 332     /* arg->argv is used by the process created above.  Hide it to
 333      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
 334      * below. */
 335     arg->argc = 0;
 336     arg->argv = NULL;
 337   }
 338   xbt_dynar_reset(process_list);
 339 }
 340
 341 void SIMIX_host_autorestart(smx_host_t host)
 342 {
 343   if(simix_global->autorestart)
 344     simix_global->autorestart(host);
 345   else
 346     xbt_die("No function for simix_global->autorestart");
 347 }
 348
 349 smx_synchro_t SIMIX_host_execute(const char *name,
 350     smx_host_t host, double flops_amount, double priority, double bound, unsigned long affinity_mask){
 351
 352   /* alloc structures and initialize */
 353   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 354   synchro->type = SIMIX_SYNC_EXECUTE;
 355   synchro->name = xbt_strdup(name);
 356   synchro->state = SIMIX_RUNNING;
 357   synchro->execution.host = host;
 358   synchro->category = NULL;
 359
 360   /* set surf's action */
 361   if (!MC_is_active() && !MC_record_replay_is_active()) {
 362
 363     synchro->execution.surf_exec = surf_host_execute(host, flops_amount);
 364     surf_action_set_data(synchro->execution.surf_exec, synchro);
 365     surf_action_set_priority(synchro->execution.surf_exec, priority);
 366
 367     /* Note (hypervisor): for multicore, the bound value being passed to the
 368      * surf layer should not be zero (i.e., unlimited). It should be the
 369      * capacity of a CPU core. */
 370     if (bound == 0)
 371       surf_cpu_action_set_bound(synchro->execution.surf_exec, SIMIX_host_get_speed(host));
 372     else
 373       surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 374
 375     if (affinity_mask != 0) {
 376       /* just a double check to confirm that this host is the host where this task is running. */
 377       xbt_assert(synchro->execution.host == host);
 378       surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, affinity_mask);
 379     }
 380   }
 381
 382   XBT_DEBUG("Create execute synchro %p: %s", synchro, synchro->name);
 383
 384   return synchro;
 385 }
 386
 387 smx_synchro_t SIMIX_host_parallel_execute(const char *name,
 388     int host_nb, smx_host_t *host_list,
 389     double *flops_amount, double *bytes_amount,
 390     double amount, double rate){
 391
 392   void **surf_host_list = NULL;
 393   int i;
 394
 395   /* alloc structures and initialize */
 396   smx_synchro_t synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
 397   synchro->type = SIMIX_SYNC_PARALLEL_EXECUTE;
 398   synchro->name = xbt_strdup(name);
 399   synchro->state = SIMIX_RUNNING;
 400   synchro->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 401   synchro->category = NULL;
 402
 403   /* set surf's synchro */
 404   surf_host_list = xbt_new0(void *, host_nb);
 405   for (i = 0; i < host_nb; i++)
 406     surf_host_list[i] = surf_host_resource_priv(host_list[i]);
 407
 408
 409   /* FIXME: what happens if host_list contains VMs and PMs. If
 410    * execute_parallel_task() does not change the state of the model, we can mix
 411    * them. */
 412   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_HOST_LEVEL);
 413   for (i = 1; i < host_nb; i++) {
 414     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_HOST_LEVEL);
 415     if (ws_model_tmp != ws_model) {
 416       XBT_CRITICAL("mixing VMs and PMs is not supported");
 417       DIE_IMPOSSIBLE;
 418     }
 419   }
 420
 421   /* set surf's synchro */
 422   if (!MC_is_active() && !MC_record_replay_is_active()) {
 423     synchro->execution.surf_exec =
 424       surf_host_model_execute_parallel_task((surf_host_model_t)surf_host_model,
 425                   host_nb, surf_host_list, flops_amount, bytes_amount, rate);
 426
 427     surf_action_set_data(synchro->execution.surf_exec, synchro);
 428   }
 429   XBT_DEBUG("Create parallel execute synchro %p", synchro);
 430
 431   return synchro;
 432 }
 433
 434 void SIMIX_host_execution_destroy(smx_synchro_t synchro){
 435   XBT_DEBUG("Destroy synchro %p", synchro);
 436
 437   if (synchro->execution.surf_exec) {
 438     surf_action_unref(synchro->execution.surf_exec);
 439     synchro->execution.surf_exec = NULL;
 440   }
 441   xbt_free(synchro->name);
 442   xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
 443 }
 444
 445 void SIMIX_host_execution_cancel(smx_synchro_t synchro){
 446   XBT_DEBUG("Cancel synchro %p", synchro);
 447
 448   if (synchro->execution.surf_exec)
 449     surf_action_cancel(synchro->execution.surf_exec);
 450 }
 451
 452 double SIMIX_host_execution_get_remains(smx_synchro_t synchro){
 453   double result = 0.0;
 454
 455   if (synchro->state == SIMIX_RUNNING)
 456     result = surf_action_get_remains(synchro->execution.surf_exec);
 457
 458   return result;
 459 }
 460
 461 e_smx_state_t SIMIX_host_execution_get_state(smx_synchro_t synchro){
 462   return synchro->state;
 463 }
 464
 465 void SIMIX_host_execution_set_priority(smx_synchro_t synchro, double priority){
 466
 467   if(synchro->execution.surf_exec)
 468         surf_action_set_priority(synchro->execution.surf_exec, priority);
 469 }
 470
 471 void SIMIX_host_execution_set_bound(smx_synchro_t synchro, double bound){
 472
 473   if(synchro->execution.surf_exec)
 474         surf_cpu_action_set_bound(synchro->execution.surf_exec, bound);
 475 }
 476
 477 void SIMIX_host_execution_set_affinity(smx_synchro_t synchro, smx_host_t host, unsigned long mask){
 478   xbt_assert(synchro->type == SIMIX_SYNC_EXECUTE);
 479
 480   if (synchro->execution.surf_exec) {
 481     /* just a double check to confirm that this host is the host where this task is running. */
 482     xbt_assert(synchro->execution.host == host);
 483     surf_cpu_action_set_affinity(synchro->execution.surf_exec, host, mask);
 484   }
 485 }
 486
 487 void simcall_HANDLER_host_execution_wait(smx_simcall_t simcall, smx_synchro_t synchro){
 488
 489   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
 490
 491   /* Associate this simcall to the synchro */
 492   xbt_fifo_push(synchro->simcalls, simcall);
 493   simcall->issuer->waiting_synchro = synchro;
 494
 495   /* set surf's synchro */
 496   if (MC_is_active() || MC_record_replay_is_active()) {
 497     synchro->state = SIMIX_DONE;
 498     SIMIX_execution_finish(synchro);
 499     return;
 500   }
 501
 502   /* If the synchro is already finished then perform the error handling */
 503   if (synchro->state != SIMIX_RUNNING)
 504     SIMIX_execution_finish(synchro);
 505 }
 506
 507 void SIMIX_host_execution_suspend(smx_synchro_t synchro)
 508 {
 509   if(synchro->execution.surf_exec)
 510     surf_action_suspend(synchro->execution.surf_exec);
 511 }
 512
 513 void SIMIX_host_execution_resume(smx_synchro_t synchro)
 514 {
 515   if(synchro->execution.surf_exec)
 516     surf_action_resume(synchro->execution.surf_exec);
 517 }
 518
 519 void SIMIX_execution_finish(smx_synchro_t synchro)
 520 {
 521   xbt_fifo_item_t item;
 522   smx_simcall_t simcall;
 523
 524   xbt_fifo_foreach(synchro->simcalls, item, simcall, smx_simcall_t) {
 525
 526     switch (synchro->state) {
 527
 528       case SIMIX_DONE:
 529         /* do nothing, synchro done */
 530         XBT_DEBUG("SIMIX_execution_finished: execution successful");
 531         break;
 532
 533       case SIMIX_FAILED:
 534         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
 535         simcall->issuer->context->iwannadie = 1;
 536         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
 537         break;
 538
 539       case SIMIX_CANCELED:
 540         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
 541         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
 542         break;
 543
 544       default:
 545         xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
 546             (int)synchro->state);
 547     }
 548     /* check if the host is down */
 549     if (surf_resource_get_state(surf_host_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
 550       simcall->issuer->context->iwannadie = 1;
 551     }
 552
 553     simcall->issuer->waiting_synchro =    NULL;
 554     simcall_host_execution_wait__set__result(simcall, synchro->state);
 555     SIMIX_simcall_answer(simcall);
 556   }
 557
 558   /* We no longer need it */
 559   SIMIX_host_execution_destroy(synchro);
 560 }
 561
 562
 563 void SIMIX_post_host_execute(smx_synchro_t synchro)
 564 {
 565   if (synchro->type == SIMIX_SYNC_EXECUTE && /* FIMXE: handle resource failure
 566                                                * for parallel tasks too */
 567       surf_resource_get_state(surf_host_resource_priv(synchro->execution.host)) == SURF_RESOURCE_OFF) {
 568     /* If the host running the synchro failed, notice it so that the asking
 569      * process can be killed if it runs on that host itself */
 570     synchro->state = SIMIX_FAILED;
 571   } else if (surf_action_get_state(synchro->execution.surf_exec) == SURF_ACTION_FAILED) {
 572     /* If the host running the synchro didn't fail, then the synchro was
 573      * canceled */
 574     synchro->state = SIMIX_CANCELED;
 575   } else {
 576     synchro->state = SIMIX_DONE;
 577   }
 578
 579   if (synchro->execution.surf_exec) {
 580     surf_action_unref(synchro->execution.surf_exec);
 581     synchro->execution.surf_exec = NULL;
 582   }
 583
 584   /* If there are simcalls associated with the synchro, then answer them */
 585   if (xbt_fifo_size(synchro->simcalls)) {
 586     SIMIX_execution_finish(synchro);
 587   }
 588 }
 589
 590
 591 void SIMIX_set_category(smx_synchro_t synchro, const char *category)
 592 {
 593   if (synchro->state != SIMIX_RUNNING) return;
 594   if (synchro->type == SIMIX_SYNC_EXECUTE){
 595     surf_action_set_category(synchro->execution.surf_exec, category);
 596   }else if (synchro->type == SIMIX_SYNC_COMMUNICATE){
 597     surf_action_set_category(synchro->comm.surf_comm, category);
 598   }
 599 }
 600
 601 /**
 602  * \brief Function to get the parameters of the given the SIMIX host.
 603  *
 604  * \param host the host to get_phys_host (a smx_host_t)
 605  * \param param the parameter object space to be overwritten (a ws_params_t)
 606  */
 607 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
 608 {
 609   /* jump to ws_get_params(). */
 610   surf_host_get_params(ind_vm, params);
 611 }
 612
 613 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
 614 {
 615   /* jump to ws_set_params(). */
 616   surf_host_set_params(ind_vm, params);
 617 }
 618
 619 xbt_dict_t SIMIX_host_get_mounted_storage_list(smx_host_t host){
 620   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 621
 622   return surf_host_get_mounted_storage_list(host);
 623 }
 624
 625 xbt_dynar_t SIMIX_host_get_attached_storage_list(smx_host_t host){
 626   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 627
 628   return surf_host_get_attached_storage_list(host);
 629 }