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