migration/migration-hmp-cmds.c

   1 /*
   2  * HMP commands related to migration
   3  *
   4  * Copyright IBM, Corp. 2011
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  * Contributions after 2012-01-13 are licensed under the terms of the
  13  * GNU GPL, version 2 or (at your option) any later version.
  14  */
  15
  16 #include "qemu/osdep.h"
  17 #include "block/qapi.h"
  18 #include "migration/snapshot.h"
  19 #include "monitor/hmp.h"
  20 #include "monitor/monitor.h"
  21 #include "qapi/error.h"
  22 #include "qapi/qapi-commands-migration.h"
  23 #include "qapi/qapi-visit-migration.h"
  24 #include "qapi/qmp/qdict.h"
  25 #include "qapi/string-input-visitor.h"
  26 #include "qapi/string-output-visitor.h"
  27 #include "qemu/cutils.h"
  28 #include "qemu/error-report.h"
  29 #include "qemu/sockets.h"
  30 #include "sysemu/runstate.h"
  31 #include "ui/qemu-spice.h"
  32 #include "sysemu/sysemu.h"
  33 #include "options.h"
  34 #include "migration.h"
  35
  36 static void migration_global_dump(Monitor *mon)
  37 {
  38     MigrationState *ms = migrate_get_current();
  39
  40     monitor_printf(mon, "globals:\n");
  41     monitor_printf(mon, "store-global-state: %s\n",
  42                    ms->store_global_state ? "on" : "off");
  43     monitor_printf(mon, "only-migratable: %s\n",
  44                    only_migratable ? "on" : "off");
  45     monitor_printf(mon, "send-configuration: %s\n",
  46                    ms->send_configuration ? "on" : "off");
  47     monitor_printf(mon, "send-section-footer: %s\n",
  48                    ms->send_section_footer ? "on" : "off");
  49     monitor_printf(mon, "decompress-error-check: %s\n",
  50                    ms->decompress_error_check ? "on" : "off");
  51     monitor_printf(mon, "clear-bitmap-shift: %u\n",
  52                    ms->clear_bitmap_shift);
  53 }
  54
  55 void hmp_info_migrate(Monitor *mon, const QDict *qdict)
  56 {
  57     MigrationInfo *info;
  58
  59     info = qmp_query_migrate(NULL);
  60
  61     migration_global_dump(mon);
  62
  63     if (info->blocked_reasons) {
  64         strList *reasons = info->blocked_reasons;
  65         monitor_printf(mon, "Outgoing migration blocked:\n");
  66         while (reasons) {
  67             monitor_printf(mon, "  %s\n", reasons->value);
  68             reasons = reasons->next;
  69         }
  70     }
  71
  72     if (info->has_status) {
  73         monitor_printf(mon, "Migration status: %s",
  74                        MigrationStatus_str(info->status));
  75         if (info->status == MIGRATION_STATUS_FAILED && info->error_desc) {
  76             monitor_printf(mon, " (%s)\n", info->error_desc);
  77         } else {
  78             monitor_printf(mon, "\n");
  79         }
  80
  81         monitor_printf(mon, "total time: %" PRIu64 " ms\n",
  82                        info->total_time);
  83         if (info->has_expected_downtime) {
  84             monitor_printf(mon, "expected downtime: %" PRIu64 " ms\n",
  85                            info->expected_downtime);
  86         }
  87         if (info->has_downtime) {
  88             monitor_printf(mon, "downtime: %" PRIu64 " ms\n",
  89                            info->downtime);
  90         }
  91         if (info->has_setup_time) {
  92             monitor_printf(mon, "setup: %" PRIu64 " ms\n",
  93                            info->setup_time);
  94         }
  95     }
  96
  97     if (info->ram) {
  98         monitor_printf(mon, "transferred ram: %" PRIu64 " kbytes\n",
  99                        info->ram->transferred >> 10);
 100         monitor_printf(mon, "throughput: %0.2f mbps\n",
 101                        info->ram->mbps);
 102         monitor_printf(mon, "remaining ram: %" PRIu64 " kbytes\n",
 103                        info->ram->remaining >> 10);
 104         monitor_printf(mon, "total ram: %" PRIu64 " kbytes\n",
 105                        info->ram->total >> 10);
 106         monitor_printf(mon, "duplicate: %" PRIu64 " pages\n",
 107                        info->ram->duplicate);
 108         monitor_printf(mon, "skipped: %" PRIu64 " pages\n",
 109                        info->ram->skipped);
 110         monitor_printf(mon, "normal: %" PRIu64 " pages\n",
 111                        info->ram->normal);
 112         monitor_printf(mon, "normal bytes: %" PRIu64 " kbytes\n",
 113                        info->ram->normal_bytes >> 10);
 114         monitor_printf(mon, "dirty sync count: %" PRIu64 "\n",
 115                        info->ram->dirty_sync_count);
 116         monitor_printf(mon, "page size: %" PRIu64 " kbytes\n",
 117                        info->ram->page_size >> 10);
 118         monitor_printf(mon, "multifd bytes: %" PRIu64 " kbytes\n",
 119                        info->ram->multifd_bytes >> 10);
 120         monitor_printf(mon, "pages-per-second: %" PRIu64 "\n",
 121                        info->ram->pages_per_second);
 122
 123         if (info->ram->dirty_pages_rate) {
 124             monitor_printf(mon, "dirty pages rate: %" PRIu64 " pages\n",
 125                            info->ram->dirty_pages_rate);
 126         }
 127         if (info->ram->postcopy_requests) {
 128             monitor_printf(mon, "postcopy request count: %" PRIu64 "\n",
 129                            info->ram->postcopy_requests);
 130         }
 131         if (info->ram->precopy_bytes) {
 132             monitor_printf(mon, "precopy ram: %" PRIu64 " kbytes\n",
 133                            info->ram->precopy_bytes >> 10);
 134         }
 135         if (info->ram->downtime_bytes) {
 136             monitor_printf(mon, "downtime ram: %" PRIu64 " kbytes\n",
 137                            info->ram->downtime_bytes >> 10);
 138         }
 139         if (info->ram->postcopy_bytes) {
 140             monitor_printf(mon, "postcopy ram: %" PRIu64 " kbytes\n",
 141                            info->ram->postcopy_bytes >> 10);
 142         }
 143         if (info->ram->dirty_sync_missed_zero_copy) {
 144             monitor_printf(mon,
 145                            "Zero-copy-send fallbacks happened: %" PRIu64 " times\n",
 146                            info->ram->dirty_sync_missed_zero_copy);
 147         }
 148     }
 149
 150     if (info->disk) {
 151         monitor_printf(mon, "transferred disk: %" PRIu64 " kbytes\n",
 152                        info->disk->transferred >> 10);
 153         monitor_printf(mon, "remaining disk: %" PRIu64 " kbytes\n",
 154                        info->disk->remaining >> 10);
 155         monitor_printf(mon, "total disk: %" PRIu64 " kbytes\n",
 156                        info->disk->total >> 10);
 157     }
 158
 159     if (info->xbzrle_cache) {
 160         monitor_printf(mon, "cache size: %" PRIu64 " bytes\n",
 161                        info->xbzrle_cache->cache_size);
 162         monitor_printf(mon, "xbzrle transferred: %" PRIu64 " kbytes\n",
 163                        info->xbzrle_cache->bytes >> 10);
 164         monitor_printf(mon, "xbzrle pages: %" PRIu64 " pages\n",
 165                        info->xbzrle_cache->pages);
 166         monitor_printf(mon, "xbzrle cache miss: %" PRIu64 " pages\n",
 167                        info->xbzrle_cache->cache_miss);
 168         monitor_printf(mon, "xbzrle cache miss rate: %0.2f\n",
 169                        info->xbzrle_cache->cache_miss_rate);
 170         monitor_printf(mon, "xbzrle encoding rate: %0.2f\n",
 171                        info->xbzrle_cache->encoding_rate);
 172         monitor_printf(mon, "xbzrle overflow: %" PRIu64 "\n",
 173                        info->xbzrle_cache->overflow);
 174     }
 175
 176     if (info->compression) {
 177         monitor_printf(mon, "compression pages: %" PRIu64 " pages\n",
 178                        info->compression->pages);
 179         monitor_printf(mon, "compression busy: %" PRIu64 "\n",
 180                        info->compression->busy);
 181         monitor_printf(mon, "compression busy rate: %0.2f\n",
 182                        info->compression->busy_rate);
 183         monitor_printf(mon, "compressed size: %" PRIu64 " kbytes\n",
 184                        info->compression->compressed_size >> 10);
 185         monitor_printf(mon, "compression rate: %0.2f\n",
 186                        info->compression->compression_rate);
 187     }
 188
 189     if (info->has_cpu_throttle_percentage) {
 190         monitor_printf(mon, "cpu throttle percentage: %" PRIu64 "\n",
 191                        info->cpu_throttle_percentage);
 192     }
 193
 194     if (info->has_dirty_limit_throttle_time_per_round) {
 195         monitor_printf(mon, "dirty-limit throttle time: %" PRIu64 " us\n",
 196                        info->dirty_limit_throttle_time_per_round);
 197     }
 198
 199     if (info->has_dirty_limit_ring_full_time) {
 200         monitor_printf(mon, "dirty-limit ring full time: %" PRIu64 " us\n",
 201                        info->dirty_limit_ring_full_time);
 202     }
 203
 204     if (info->has_postcopy_blocktime) {
 205         monitor_printf(mon, "postcopy blocktime: %u\n",
 206                        info->postcopy_blocktime);
 207     }
 208
 209     if (info->has_postcopy_vcpu_blocktime) {
 210         Visitor *v;
 211         char *str;
 212         v = string_output_visitor_new(false, &str);
 213         visit_type_uint32List(v, NULL, &info->postcopy_vcpu_blocktime,
 214                               &error_abort);
 215         visit_complete(v, &str);
 216         monitor_printf(mon, "postcopy vcpu blocktime: %s\n", str);
 217         g_free(str);
 218         visit_free(v);
 219     }
 220     if (info->has_socket_address) {
 221         SocketAddressList *addr;
 222
 223         monitor_printf(mon, "socket address: [\n");
 224
 225         for (addr = info->socket_address; addr; addr = addr->next) {
 226             char *s = socket_uri(addr->value);
 227             monitor_printf(mon, "\t%s\n", s);
 228             g_free(s);
 229         }
 230         monitor_printf(mon, "]\n");
 231     }
 232
 233     if (info->vfio) {
 234         monitor_printf(mon, "vfio device transferred: %" PRIu64 " kbytes\n",
 235                        info->vfio->transferred >> 10);
 236     }
 237
 238     qapi_free_MigrationInfo(info);
 239 }
 240
 241 void hmp_info_migrate_capabilities(Monitor *mon, const QDict *qdict)
 242 {
 243     MigrationCapabilityStatusList *caps, *cap;
 244
 245     caps = qmp_query_migrate_capabilities(NULL);
 246
 247     if (caps) {
 248         for (cap = caps; cap; cap = cap->next) {
 249             monitor_printf(mon, "%s: %s\n",
 250                            MigrationCapability_str(cap->value->capability),
 251                            cap->value->state ? "on" : "off");
 252         }
 253     }
 254
 255     qapi_free_MigrationCapabilityStatusList(caps);
 256 }
 257
 258 void hmp_info_migrate_parameters(Monitor *mon, const QDict *qdict)
 259 {
 260     MigrationParameters *params;
 261
 262     params = qmp_query_migrate_parameters(NULL);
 263
 264     if (params) {
 265         monitor_printf(mon, "%s: %" PRIu64 " ms\n",
 266             MigrationParameter_str(MIGRATION_PARAMETER_ANNOUNCE_INITIAL),
 267             params->announce_initial);
 268         monitor_printf(mon, "%s: %" PRIu64 " ms\n",
 269             MigrationParameter_str(MIGRATION_PARAMETER_ANNOUNCE_MAX),
 270             params->announce_max);
 271         monitor_printf(mon, "%s: %" PRIu64 "\n",
 272             MigrationParameter_str(MIGRATION_PARAMETER_ANNOUNCE_ROUNDS),
 273             params->announce_rounds);
 274         monitor_printf(mon, "%s: %" PRIu64 " ms\n",
 275             MigrationParameter_str(MIGRATION_PARAMETER_ANNOUNCE_STEP),
 276             params->announce_step);
 277         assert(params->has_compress_level);
 278         monitor_printf(mon, "%s: %u\n",
 279             MigrationParameter_str(MIGRATION_PARAMETER_COMPRESS_LEVEL),
 280             params->compress_level);
 281         assert(params->has_compress_threads);
 282         monitor_printf(mon, "%s: %u\n",
 283             MigrationParameter_str(MIGRATION_PARAMETER_COMPRESS_THREADS),
 284             params->compress_threads);
 285         assert(params->has_compress_wait_thread);
 286         monitor_printf(mon, "%s: %s\n",
 287             MigrationParameter_str(MIGRATION_PARAMETER_COMPRESS_WAIT_THREAD),
 288             params->compress_wait_thread ? "on" : "off");
 289         assert(params->has_decompress_threads);
 290         monitor_printf(mon, "%s: %u\n",
 291             MigrationParameter_str(MIGRATION_PARAMETER_DECOMPRESS_THREADS),
 292             params->decompress_threads);
 293         assert(params->has_throttle_trigger_threshold);
 294         monitor_printf(mon, "%s: %u\n",
 295             MigrationParameter_str(MIGRATION_PARAMETER_THROTTLE_TRIGGER_THRESHOLD),
 296             params->throttle_trigger_threshold);
 297         assert(params->has_cpu_throttle_initial);
 298         monitor_printf(mon, "%s: %u\n",
 299             MigrationParameter_str(MIGRATION_PARAMETER_CPU_THROTTLE_INITIAL),
 300             params->cpu_throttle_initial);
 301         assert(params->has_cpu_throttle_increment);
 302         monitor_printf(mon, "%s: %u\n",
 303             MigrationParameter_str(MIGRATION_PARAMETER_CPU_THROTTLE_INCREMENT),
 304             params->cpu_throttle_increment);
 305         assert(params->has_cpu_throttle_tailslow);
 306         monitor_printf(mon, "%s: %s\n",
 307             MigrationParameter_str(MIGRATION_PARAMETER_CPU_THROTTLE_TAILSLOW),
 308             params->cpu_throttle_tailslow ? "on" : "off");
 309         assert(params->has_max_cpu_throttle);
 310         monitor_printf(mon, "%s: %u\n",
 311             MigrationParameter_str(MIGRATION_PARAMETER_MAX_CPU_THROTTLE),
 312             params->max_cpu_throttle);
 313         assert(params->tls_creds);
 314         monitor_printf(mon, "%s: '%s'\n",
 315             MigrationParameter_str(MIGRATION_PARAMETER_TLS_CREDS),
 316             params->tls_creds);
 317         assert(params->tls_hostname);
 318         monitor_printf(mon, "%s: '%s'\n",
 319             MigrationParameter_str(MIGRATION_PARAMETER_TLS_HOSTNAME),
 320             params->tls_hostname);
 321         assert(params->has_max_bandwidth);
 322         monitor_printf(mon, "%s: %" PRIu64 " bytes/second\n",
 323             MigrationParameter_str(MIGRATION_PARAMETER_MAX_BANDWIDTH),
 324             params->max_bandwidth);
 325         assert(params->has_avail_switchover_bandwidth);
 326         monitor_printf(mon, "%s: %" PRIu64 " bytes/second\n",
 327             MigrationParameter_str(MIGRATION_PARAMETER_AVAIL_SWITCHOVER_BANDWIDTH),
 328             params->avail_switchover_bandwidth);
 329         assert(params->has_downtime_limit);
 330         monitor_printf(mon, "%s: %" PRIu64 " ms\n",
 331             MigrationParameter_str(MIGRATION_PARAMETER_DOWNTIME_LIMIT),
 332             params->downtime_limit);
 333         assert(params->has_x_checkpoint_delay);
 334         monitor_printf(mon, "%s: %u ms\n",
 335             MigrationParameter_str(MIGRATION_PARAMETER_X_CHECKPOINT_DELAY),
 336             params->x_checkpoint_delay);
 337         assert(params->has_block_incremental);
 338         monitor_printf(mon, "%s: %s\n",
 339             MigrationParameter_str(MIGRATION_PARAMETER_BLOCK_INCREMENTAL),
 340             params->block_incremental ? "on" : "off");
 341         monitor_printf(mon, "%s: %u\n",
 342             MigrationParameter_str(MIGRATION_PARAMETER_MULTIFD_CHANNELS),
 343             params->multifd_channels);
 344         monitor_printf(mon, "%s: %s\n",
 345             MigrationParameter_str(MIGRATION_PARAMETER_MULTIFD_COMPRESSION),
 346             MultiFDCompression_str(params->multifd_compression));
 347         monitor_printf(mon, "%s: %" PRIu64 " bytes\n",
 348             MigrationParameter_str(MIGRATION_PARAMETER_XBZRLE_CACHE_SIZE),
 349             params->xbzrle_cache_size);
 350         monitor_printf(mon, "%s: %" PRIu64 "\n",
 351             MigrationParameter_str(MIGRATION_PARAMETER_MAX_POSTCOPY_BANDWIDTH),
 352             params->max_postcopy_bandwidth);
 353         monitor_printf(mon, "%s: '%s'\n",
 354             MigrationParameter_str(MIGRATION_PARAMETER_TLS_AUTHZ),
 355             params->tls_authz);
 356
 357         if (params->has_block_bitmap_mapping) {
 358             const BitmapMigrationNodeAliasList *bmnal;
 359
 360             monitor_printf(mon, "%s:\n",
 361                            MigrationParameter_str(
 362                                MIGRATION_PARAMETER_BLOCK_BITMAP_MAPPING));
 363
 364             for (bmnal = params->block_bitmap_mapping;
 365                  bmnal;
 366                  bmnal = bmnal->next)
 367             {
 368                 const BitmapMigrationNodeAlias *bmna = bmnal->value;
 369                 const BitmapMigrationBitmapAliasList *bmbal;
 370
 371                 monitor_printf(mon, "  '%s' -> '%s'\n",
 372                                bmna->node_name, bmna->alias);
 373
 374                 for (bmbal = bmna->bitmaps; bmbal; bmbal = bmbal->next) {
 375                     const BitmapMigrationBitmapAlias *bmba = bmbal->value;
 376
 377                     monitor_printf(mon, "    '%s' -> '%s'\n",
 378                                    bmba->name, bmba->alias);
 379                 }
 380             }
 381         }
 382
 383         monitor_printf(mon, "%s: %" PRIu64 " ms\n",
 384         MigrationParameter_str(MIGRATION_PARAMETER_X_VCPU_DIRTY_LIMIT_PERIOD),
 385         params->x_vcpu_dirty_limit_period);
 386
 387         monitor_printf(mon, "%s: %" PRIu64 " MB/s\n",
 388             MigrationParameter_str(MIGRATION_PARAMETER_VCPU_DIRTY_LIMIT),
 389             params->vcpu_dirty_limit);
 390
 391         assert(params->has_mode);
 392         monitor_printf(mon, "%s: %s\n",
 393             MigrationParameter_str(MIGRATION_PARAMETER_MODE),
 394             qapi_enum_lookup(&MigMode_lookup, params->mode));
 395     }
 396
 397     qapi_free_MigrationParameters(params);
 398 }
 399
 400 void hmp_loadvm(Monitor *mon, const QDict *qdict)
 401 {
 402     int saved_vm_running  = runstate_is_running();
 403     const char *name = qdict_get_str(qdict, "name");
 404     Error *err = NULL;
 405
 406     vm_stop(RUN_STATE_RESTORE_VM);
 407
 408     if (load_snapshot(name, NULL, false, NULL, &err) && saved_vm_running) {
 409         vm_start();
 410     }
 411     hmp_handle_error(mon, err);
 412 }
 413
 414 void hmp_savevm(Monitor *mon, const QDict *qdict)
 415 {
 416     Error *err = NULL;
 417
 418     save_snapshot(qdict_get_try_str(qdict, "name"),
 419                   true, NULL, false, NULL, &err);
 420     hmp_handle_error(mon, err);
 421 }
 422
 423 void hmp_delvm(Monitor *mon, const QDict *qdict)
 424 {
 425     Error *err = NULL;
 426     const char *name = qdict_get_str(qdict, "name");
 427
 428     delete_snapshot(name, false, NULL, &err);
 429     hmp_handle_error(mon, err);
 430 }
 431
 432 void hmp_migrate_cancel(Monitor *mon, const QDict *qdict)
 433 {
 434     qmp_migrate_cancel(NULL);
 435 }
 436
 437 void hmp_migrate_continue(Monitor *mon, const QDict *qdict)
 438 {
 439     Error *err = NULL;
 440     const char *state = qdict_get_str(qdict, "state");
 441     int val = qapi_enum_parse(&MigrationStatus_lookup, state, -1, &err);
 442
 443     if (val >= 0) {
 444         qmp_migrate_continue(val, &err);
 445     }
 446
 447     hmp_handle_error(mon, err);
 448 }
 449
 450 void hmp_migrate_incoming(Monitor *mon, const QDict *qdict)
 451 {
 452     Error *err = NULL;
 453     const char *uri = qdict_get_str(qdict, "uri");
 454     MigrationChannelList *caps = NULL;
 455     g_autoptr(MigrationChannel) channel = NULL;
 456
 457     if (!migrate_uri_parse(uri, &channel, &err)) {
 458         goto end;
 459     }
 460     QAPI_LIST_PREPEND(caps, g_steal_pointer(&channel));
 461
 462     qmp_migrate_incoming(NULL, true, caps, &err);
 463     qapi_free_MigrationChannelList(caps);
 464
 465 end:
 466     hmp_handle_error(mon, err);
 467 }
 468
 469 void hmp_migrate_recover(Monitor *mon, const QDict *qdict)
 470 {
 471     Error *err = NULL;
 472     const char *uri = qdict_get_str(qdict, "uri");
 473
 474     qmp_migrate_recover(uri, &err);
 475
 476     hmp_handle_error(mon, err);
 477 }
 478
 479 void hmp_migrate_pause(Monitor *mon, const QDict *qdict)
 480 {
 481     Error *err = NULL;
 482
 483     qmp_migrate_pause(&err);
 484
 485     hmp_handle_error(mon, err);
 486 }
 487
 488
 489 void hmp_migrate_set_capability(Monitor *mon, const QDict *qdict)
 490 {
 491     const char *cap = qdict_get_str(qdict, "capability");
 492     bool state = qdict_get_bool(qdict, "state");
 493     Error *err = NULL;
 494     MigrationCapabilityStatusList *caps = NULL;
 495     MigrationCapabilityStatus *value;
 496     int val;
 497
 498     val = qapi_enum_parse(&MigrationCapability_lookup, cap, -1, &err);
 499     if (val < 0) {
 500         goto end;
 501     }
 502
 503     value = g_malloc0(sizeof(*value));
 504     value->capability = val;
 505     value->state = state;
 506     QAPI_LIST_PREPEND(caps, value);
 507     qmp_migrate_set_capabilities(caps, &err);
 508     qapi_free_MigrationCapabilityStatusList(caps);
 509
 510 end:
 511     hmp_handle_error(mon, err);
 512 }
 513
 514 void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
 515 {
 516     const char *param = qdict_get_str(qdict, "parameter");
 517     const char *valuestr = qdict_get_str(qdict, "value");
 518     Visitor *v = string_input_visitor_new(valuestr);
 519     MigrateSetParameters *p = g_new0(MigrateSetParameters, 1);
 520     uint64_t valuebw = 0;
 521     uint64_t cache_size;
 522     Error *err = NULL;
 523     int val, ret;
 524
 525     val = qapi_enum_parse(&MigrationParameter_lookup, param, -1, &err);
 526     if (val < 0) {
 527         goto cleanup;
 528     }
 529
 530     switch (val) {
 531     case MIGRATION_PARAMETER_COMPRESS_LEVEL:
 532         p->has_compress_level = true;
 533         visit_type_uint8(v, param, &p->compress_level, &err);
 534         break;
 535     case MIGRATION_PARAMETER_COMPRESS_THREADS:
 536         p->has_compress_threads = true;
 537         visit_type_uint8(v, param, &p->compress_threads, &err);
 538         break;
 539     case MIGRATION_PARAMETER_COMPRESS_WAIT_THREAD:
 540         p->has_compress_wait_thread = true;
 541         visit_type_bool(v, param, &p->compress_wait_thread, &err);
 542         break;
 543     case MIGRATION_PARAMETER_DECOMPRESS_THREADS:
 544         p->has_decompress_threads = true;
 545         visit_type_uint8(v, param, &p->decompress_threads, &err);
 546         break;
 547     case MIGRATION_PARAMETER_THROTTLE_TRIGGER_THRESHOLD:
 548         p->has_throttle_trigger_threshold = true;
 549         visit_type_uint8(v, param, &p->throttle_trigger_threshold, &err);
 550         break;
 551     case MIGRATION_PARAMETER_CPU_THROTTLE_INITIAL:
 552         p->has_cpu_throttle_initial = true;
 553         visit_type_uint8(v, param, &p->cpu_throttle_initial, &err);
 554         break;
 555     case MIGRATION_PARAMETER_CPU_THROTTLE_INCREMENT:
 556         p->has_cpu_throttle_increment = true;
 557         visit_type_uint8(v, param, &p->cpu_throttle_increment, &err);
 558         break;
 559     case MIGRATION_PARAMETER_CPU_THROTTLE_TAILSLOW:
 560         p->has_cpu_throttle_tailslow = true;
 561         visit_type_bool(v, param, &p->cpu_throttle_tailslow, &err);
 562         break;
 563     case MIGRATION_PARAMETER_MAX_CPU_THROTTLE:
 564         p->has_max_cpu_throttle = true;
 565         visit_type_uint8(v, param, &p->max_cpu_throttle, &err);
 566         break;
 567     case MIGRATION_PARAMETER_TLS_CREDS:
 568         p->tls_creds = g_new0(StrOrNull, 1);
 569         p->tls_creds->type = QTYPE_QSTRING;
 570         visit_type_str(v, param, &p->tls_creds->u.s, &err);
 571         break;
 572     case MIGRATION_PARAMETER_TLS_HOSTNAME:
 573         p->tls_hostname = g_new0(StrOrNull, 1);
 574         p->tls_hostname->type = QTYPE_QSTRING;
 575         visit_type_str(v, param, &p->tls_hostname->u.s, &err);
 576         break;
 577     case MIGRATION_PARAMETER_TLS_AUTHZ:
 578         p->tls_authz = g_new0(StrOrNull, 1);
 579         p->tls_authz->type = QTYPE_QSTRING;
 580         visit_type_str(v, param, &p->tls_authz->u.s, &err);
 581         break;
 582     case MIGRATION_PARAMETER_MAX_BANDWIDTH:
 583         p->has_max_bandwidth = true;
 584         /*
 585          * Can't use visit_type_size() here, because it
 586          * defaults to Bytes rather than Mebibytes.
 587          */
 588         ret = qemu_strtosz_MiB(valuestr, NULL, &valuebw);
 589         if (ret < 0 || valuebw > INT64_MAX
 590             || (size_t)valuebw != valuebw) {
 591             error_setg(&err, "Invalid size %s", valuestr);
 592             break;
 593         }
 594         p->max_bandwidth = valuebw;
 595         break;
 596     case MIGRATION_PARAMETER_AVAIL_SWITCHOVER_BANDWIDTH:
 597         p->has_avail_switchover_bandwidth = true;
 598         ret = qemu_strtosz_MiB(valuestr, NULL, &valuebw);
 599         if (ret < 0 || valuebw > INT64_MAX
 600             || (size_t)valuebw != valuebw) {
 601             error_setg(&err, "Invalid size %s", valuestr);
 602             break;
 603         }
 604         p->avail_switchover_bandwidth = valuebw;
 605         break;
 606     case MIGRATION_PARAMETER_DOWNTIME_LIMIT:
 607         p->has_downtime_limit = true;
 608         visit_type_size(v, param, &p->downtime_limit, &err);
 609         break;
 610     case MIGRATION_PARAMETER_X_CHECKPOINT_DELAY:
 611         p->has_x_checkpoint_delay = true;
 612         visit_type_uint32(v, param, &p->x_checkpoint_delay, &err);
 613         break;
 614     case MIGRATION_PARAMETER_BLOCK_INCREMENTAL:
 615         p->has_block_incremental = true;
 616         visit_type_bool(v, param, &p->block_incremental, &err);
 617         break;
 618     case MIGRATION_PARAMETER_MULTIFD_CHANNELS:
 619         p->has_multifd_channels = true;
 620         visit_type_uint8(v, param, &p->multifd_channels, &err);
 621         break;
 622     case MIGRATION_PARAMETER_MULTIFD_COMPRESSION:
 623         p->has_multifd_compression = true;
 624         visit_type_MultiFDCompression(v, param, &p->multifd_compression,
 625                                       &err);
 626         break;
 627     case MIGRATION_PARAMETER_MULTIFD_ZLIB_LEVEL:
 628         p->has_multifd_zlib_level = true;
 629         visit_type_uint8(v, param, &p->multifd_zlib_level, &err);
 630         break;
 631     case MIGRATION_PARAMETER_MULTIFD_ZSTD_LEVEL:
 632         p->has_multifd_zstd_level = true;
 633         visit_type_uint8(v, param, &p->multifd_zstd_level, &err);
 634         break;
 635     case MIGRATION_PARAMETER_XBZRLE_CACHE_SIZE:
 636         p->has_xbzrle_cache_size = true;
 637         if (!visit_type_size(v, param, &cache_size, &err)) {
 638             break;
 639         }
 640         if (cache_size > INT64_MAX || (size_t)cache_size != cache_size) {
 641             error_setg(&err, "Invalid size %s", valuestr);
 642             break;
 643         }
 644         p->xbzrle_cache_size = cache_size;
 645         break;
 646     case MIGRATION_PARAMETER_MAX_POSTCOPY_BANDWIDTH:
 647         p->has_max_postcopy_bandwidth = true;
 648         visit_type_size(v, param, &p->max_postcopy_bandwidth, &err);
 649         break;
 650     case MIGRATION_PARAMETER_ANNOUNCE_INITIAL:
 651         p->has_announce_initial = true;
 652         visit_type_size(v, param, &p->announce_initial, &err);
 653         break;
 654     case MIGRATION_PARAMETER_ANNOUNCE_MAX:
 655         p->has_announce_max = true;
 656         visit_type_size(v, param, &p->announce_max, &err);
 657         break;
 658     case MIGRATION_PARAMETER_ANNOUNCE_ROUNDS:
 659         p->has_announce_rounds = true;
 660         visit_type_size(v, param, &p->announce_rounds, &err);
 661         break;
 662     case MIGRATION_PARAMETER_ANNOUNCE_STEP:
 663         p->has_announce_step = true;
 664         visit_type_size(v, param, &p->announce_step, &err);
 665         break;
 666     case MIGRATION_PARAMETER_BLOCK_BITMAP_MAPPING:
 667         error_setg(&err, "The block-bitmap-mapping parameter can only be set "
 668                    "through QMP");
 669         break;
 670     case MIGRATION_PARAMETER_X_VCPU_DIRTY_LIMIT_PERIOD:
 671         p->has_x_vcpu_dirty_limit_period = true;
 672         visit_type_size(v, param, &p->x_vcpu_dirty_limit_period, &err);
 673         break;
 674     case MIGRATION_PARAMETER_VCPU_DIRTY_LIMIT:
 675         p->has_vcpu_dirty_limit = true;
 676         visit_type_size(v, param, &p->vcpu_dirty_limit, &err);
 677         break;
 678     case MIGRATION_PARAMETER_MODE:
 679         p->has_mode = true;
 680         visit_type_MigMode(v, param, &p->mode, &err);
 681         break;
 682     default:
 683         assert(0);
 684     }
 685
 686     if (err) {
 687         goto cleanup;
 688     }
 689
 690     qmp_migrate_set_parameters(p, &err);
 691
 692  cleanup:
 693     qapi_free_MigrateSetParameters(p);
 694     visit_free(v);
 695     hmp_handle_error(mon, err);
 696 }
 697
 698 void hmp_migrate_start_postcopy(Monitor *mon, const QDict *qdict)
 699 {
 700     Error *err = NULL;
 701     qmp_migrate_start_postcopy(&err);
 702     hmp_handle_error(mon, err);
 703 }
 704
 705 #ifdef CONFIG_REPLICATION
 706 void hmp_x_colo_lost_heartbeat(Monitor *mon, const QDict *qdict)
 707 {
 708     Error *err = NULL;
 709
 710     qmp_x_colo_lost_heartbeat(&err);
 711     hmp_handle_error(mon, err);
 712 }
 713 #endif
 714
 715 typedef struct HMPMigrationStatus {
 716     QEMUTimer *timer;
 717     Monitor *mon;
 718 } HMPMigrationStatus;
 719
 720 static void hmp_migrate_status_cb(void *opaque)
 721 {
 722     HMPMigrationStatus *status = opaque;
 723     MigrationInfo *info;
 724
 725     info = qmp_query_migrate(NULL);
 726     if (!info->has_status || info->status == MIGRATION_STATUS_ACTIVE ||
 727         info->status == MIGRATION_STATUS_SETUP) {
 728         if (info->disk) {
 729             int progress;
 730
 731             if (info->disk->remaining) {
 732                 progress = info->disk->transferred * 100 / info->disk->total;
 733             } else {
 734                 progress = 100;
 735             }
 736
 737             monitor_printf(status->mon, "Completed %d %%\r", progress);
 738             monitor_flush(status->mon);
 739         }
 740
 741         timer_mod(status->timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
 742     } else {
 743         if (migrate_block()) {
 744             monitor_printf(status->mon, "\n");
 745         }
 746         if (info->error_desc) {
 747             error_report("%s", info->error_desc);
 748         }
 749         monitor_resume(status->mon);
 750         timer_free(status->timer);
 751         g_free(status);
 752     }
 753
 754     qapi_free_MigrationInfo(info);
 755 }
 756
 757 void hmp_migrate(Monitor *mon, const QDict *qdict)
 758 {
 759     bool detach = qdict_get_try_bool(qdict, "detach", false);
 760     bool blk = qdict_get_try_bool(qdict, "blk", false);
 761     bool inc = qdict_get_try_bool(qdict, "inc", false);
 762     bool resume = qdict_get_try_bool(qdict, "resume", false);
 763     const char *uri = qdict_get_str(qdict, "uri");
 764     Error *err = NULL;
 765     MigrationChannelList *caps = NULL;
 766     g_autoptr(MigrationChannel) channel = NULL;
 767
 768     if (inc) {
 769         warn_report("option '-i' is deprecated;"
 770                     " use blockdev-mirror with NBD instead");
 771     }
 772
 773     if (blk) {
 774         warn_report("option '-b' is deprecated;"
 775                     " use blockdev-mirror with NBD instead");
 776     }
 777
 778     if (!migrate_uri_parse(uri, &channel, &err)) {
 779         hmp_handle_error(mon, err);
 780         return;
 781     }
 782     QAPI_LIST_PREPEND(caps, g_steal_pointer(&channel));
 783
 784     qmp_migrate(NULL, true, caps, !!blk, blk, !!inc, inc,
 785                  false, false, true, resume, &err);
 786     if (hmp_handle_error(mon, err)) {
 787         return;
 788     }
 789
 790     qapi_free_MigrationChannelList(caps);
 791
 792     if (!detach) {
 793         HMPMigrationStatus *status;
 794
 795         if (monitor_suspend(mon) < 0) {
 796             monitor_printf(mon, "terminal does not allow synchronous "
 797                            "migration, continuing detached\n");
 798             return;
 799         }
 800
 801         status = g_malloc0(sizeof(*status));
 802         status->mon = mon;
 803         status->timer = timer_new_ms(QEMU_CLOCK_REALTIME, hmp_migrate_status_cb,
 804                                           status);
 805         timer_mod(status->timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
 806     }
 807 }
 808
 809 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
 810                                        const char *str)
 811 {
 812     size_t len;
 813
 814     len = strlen(str);
 815     readline_set_completion_index(rs, len);
 816     if (nb_args == 2) {
 817         int i;
 818         for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
 819             readline_add_completion_of(rs, str, MigrationCapability_str(i));
 820         }
 821     } else if (nb_args == 3) {
 822         readline_add_completion_of(rs, str, "on");
 823         readline_add_completion_of(rs, str, "off");
 824     }
 825 }
 826
 827 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
 828                                       const char *str)
 829 {
 830     size_t len;
 831
 832     len = strlen(str);
 833     readline_set_completion_index(rs, len);
 834     if (nb_args == 2) {
 835         int i;
 836         for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
 837             readline_add_completion_of(rs, str, MigrationParameter_str(i));
 838         }
 839     }
 840 }
 841
 842 static void vm_completion(ReadLineState *rs, const char *str)
 843 {
 844     size_t len;
 845     BlockDriverState *bs;
 846     BdrvNextIterator it;
 847
 848     GRAPH_RDLOCK_GUARD_MAINLOOP();
 849
 850     len = strlen(str);
 851     readline_set_completion_index(rs, len);
 852
 853     for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
 854         SnapshotInfoList *snapshots, *snapshot;
 855         AioContext *ctx = bdrv_get_aio_context(bs);
 856         bool ok = false;
 857
 858         aio_context_acquire(ctx);
 859         if (bdrv_can_snapshot(bs)) {
 860             ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
 861         }
 862         aio_context_release(ctx);
 863         if (!ok) {
 864             continue;
 865         }
 866
 867         snapshot = snapshots;
 868         while (snapshot) {
 869             readline_add_completion_of(rs, str, snapshot->value->name);
 870             readline_add_completion_of(rs, str, snapshot->value->id);
 871             snapshot = snapshot->next;
 872         }
 873         qapi_free_SnapshotInfoList(snapshots);
 874     }
 875
 876 }
 877
 878 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
 879 {
 880     if (nb_args == 2) {
 881         vm_completion(rs, str);
 882     }
 883 }
 884
 885 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
 886 {
 887     if (nb_args == 2) {
 888         vm_completion(rs, str);
 889     }
 890 }