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 
455     qmp_migrate_incoming(uri, &err);
456 
457     hmp_handle_error(mon, err);
458 }
459 
460 void hmp_migrate_recover(Monitor *mon, const QDict *qdict)
461 {
462     Error *err = NULL;
463     const char *uri = qdict_get_str(qdict, "uri");
464 
465     qmp_migrate_recover(uri, &err);
466 
467     hmp_handle_error(mon, err);
468 }
469 
470 void hmp_migrate_pause(Monitor *mon, const QDict *qdict)
471 {
472     Error *err = NULL;
473 
474     qmp_migrate_pause(&err);
475 
476     hmp_handle_error(mon, err);
477 }
478 
479 
480 void hmp_migrate_set_capability(Monitor *mon, const QDict *qdict)
481 {
482     const char *cap = qdict_get_str(qdict, "capability");
483     bool state = qdict_get_bool(qdict, "state");
484     Error *err = NULL;
485     MigrationCapabilityStatusList *caps = NULL;
486     MigrationCapabilityStatus *value;
487     int val;
488 
489     val = qapi_enum_parse(&MigrationCapability_lookup, cap, -1, &err);
490     if (val < 0) {
491         goto end;
492     }
493 
494     value = g_malloc0(sizeof(*value));
495     value->capability = val;
496     value->state = state;
497     QAPI_LIST_PREPEND(caps, value);
498     qmp_migrate_set_capabilities(caps, &err);
499     qapi_free_MigrationCapabilityStatusList(caps);
500 
501 end:
502     hmp_handle_error(mon, err);
503 }
504 
505 void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
506 {
507     const char *param = qdict_get_str(qdict, "parameter");
508     const char *valuestr = qdict_get_str(qdict, "value");
509     Visitor *v = string_input_visitor_new(valuestr);
510     MigrateSetParameters *p = g_new0(MigrateSetParameters, 1);
511     uint64_t valuebw = 0;
512     uint64_t cache_size;
513     Error *err = NULL;
514     int val, ret;
515 
516     val = qapi_enum_parse(&MigrationParameter_lookup, param, -1, &err);
517     if (val < 0) {
518         goto cleanup;
519     }
520 
521     switch (val) {
522     case MIGRATION_PARAMETER_COMPRESS_LEVEL:
523         p->has_compress_level = true;
524         visit_type_uint8(v, param, &p->compress_level, &err);
525         break;
526     case MIGRATION_PARAMETER_COMPRESS_THREADS:
527         p->has_compress_threads = true;
528         visit_type_uint8(v, param, &p->compress_threads, &err);
529         break;
530     case MIGRATION_PARAMETER_COMPRESS_WAIT_THREAD:
531         p->has_compress_wait_thread = true;
532         visit_type_bool(v, param, &p->compress_wait_thread, &err);
533         break;
534     case MIGRATION_PARAMETER_DECOMPRESS_THREADS:
535         p->has_decompress_threads = true;
536         visit_type_uint8(v, param, &p->decompress_threads, &err);
537         break;
538     case MIGRATION_PARAMETER_THROTTLE_TRIGGER_THRESHOLD:
539         p->has_throttle_trigger_threshold = true;
540         visit_type_uint8(v, param, &p->throttle_trigger_threshold, &err);
541         break;
542     case MIGRATION_PARAMETER_CPU_THROTTLE_INITIAL:
543         p->has_cpu_throttle_initial = true;
544         visit_type_uint8(v, param, &p->cpu_throttle_initial, &err);
545         break;
546     case MIGRATION_PARAMETER_CPU_THROTTLE_INCREMENT:
547         p->has_cpu_throttle_increment = true;
548         visit_type_uint8(v, param, &p->cpu_throttle_increment, &err);
549         break;
550     case MIGRATION_PARAMETER_CPU_THROTTLE_TAILSLOW:
551         p->has_cpu_throttle_tailslow = true;
552         visit_type_bool(v, param, &p->cpu_throttle_tailslow, &err);
553         break;
554     case MIGRATION_PARAMETER_MAX_CPU_THROTTLE:
555         p->has_max_cpu_throttle = true;
556         visit_type_uint8(v, param, &p->max_cpu_throttle, &err);
557         break;
558     case MIGRATION_PARAMETER_TLS_CREDS:
559         p->tls_creds = g_new0(StrOrNull, 1);
560         p->tls_creds->type = QTYPE_QSTRING;
561         visit_type_str(v, param, &p->tls_creds->u.s, &err);
562         break;
563     case MIGRATION_PARAMETER_TLS_HOSTNAME:
564         p->tls_hostname = g_new0(StrOrNull, 1);
565         p->tls_hostname->type = QTYPE_QSTRING;
566         visit_type_str(v, param, &p->tls_hostname->u.s, &err);
567         break;
568     case MIGRATION_PARAMETER_TLS_AUTHZ:
569         p->tls_authz = g_new0(StrOrNull, 1);
570         p->tls_authz->type = QTYPE_QSTRING;
571         visit_type_str(v, param, &p->tls_authz->u.s, &err);
572         break;
573     case MIGRATION_PARAMETER_MAX_BANDWIDTH:
574         p->has_max_bandwidth = true;
575         /*
576          * Can't use visit_type_size() here, because it
577          * defaults to Bytes rather than Mebibytes.
578          */
579         ret = qemu_strtosz_MiB(valuestr, NULL, &valuebw);
580         if (ret < 0 || valuebw > INT64_MAX
581             || (size_t)valuebw != valuebw) {
582             error_setg(&err, "Invalid size %s", valuestr);
583             break;
584         }
585         p->max_bandwidth = valuebw;
586         break;
587     case MIGRATION_PARAMETER_AVAIL_SWITCHOVER_BANDWIDTH:
588         p->has_avail_switchover_bandwidth = true;
589         ret = qemu_strtosz_MiB(valuestr, NULL, &valuebw);
590         if (ret < 0 || valuebw > INT64_MAX
591             || (size_t)valuebw != valuebw) {
592             error_setg(&err, "Invalid size %s", valuestr);
593             break;
594         }
595         p->avail_switchover_bandwidth = valuebw;
596         break;
597     case MIGRATION_PARAMETER_DOWNTIME_LIMIT:
598         p->has_downtime_limit = true;
599         visit_type_size(v, param, &p->downtime_limit, &err);
600         break;
601     case MIGRATION_PARAMETER_X_CHECKPOINT_DELAY:
602         p->has_x_checkpoint_delay = true;
603         visit_type_uint32(v, param, &p->x_checkpoint_delay, &err);
604         break;
605     case MIGRATION_PARAMETER_BLOCK_INCREMENTAL:
606         p->has_block_incremental = true;
607         visit_type_bool(v, param, &p->block_incremental, &err);
608         break;
609     case MIGRATION_PARAMETER_MULTIFD_CHANNELS:
610         p->has_multifd_channels = true;
611         visit_type_uint8(v, param, &p->multifd_channels, &err);
612         break;
613     case MIGRATION_PARAMETER_MULTIFD_COMPRESSION:
614         p->has_multifd_compression = true;
615         visit_type_MultiFDCompression(v, param, &p->multifd_compression,
616                                       &err);
617         break;
618     case MIGRATION_PARAMETER_MULTIFD_ZLIB_LEVEL:
619         p->has_multifd_zlib_level = true;
620         visit_type_uint8(v, param, &p->multifd_zlib_level, &err);
621         break;
622     case MIGRATION_PARAMETER_MULTIFD_ZSTD_LEVEL:
623         p->has_multifd_zstd_level = true;
624         visit_type_uint8(v, param, &p->multifd_zstd_level, &err);
625         break;
626     case MIGRATION_PARAMETER_XBZRLE_CACHE_SIZE:
627         p->has_xbzrle_cache_size = true;
628         if (!visit_type_size(v, param, &cache_size, &err)) {
629             break;
630         }
631         if (cache_size > INT64_MAX || (size_t)cache_size != cache_size) {
632             error_setg(&err, "Invalid size %s", valuestr);
633             break;
634         }
635         p->xbzrle_cache_size = cache_size;
636         break;
637     case MIGRATION_PARAMETER_MAX_POSTCOPY_BANDWIDTH:
638         p->has_max_postcopy_bandwidth = true;
639         visit_type_size(v, param, &p->max_postcopy_bandwidth, &err);
640         break;
641     case MIGRATION_PARAMETER_ANNOUNCE_INITIAL:
642         p->has_announce_initial = true;
643         visit_type_size(v, param, &p->announce_initial, &err);
644         break;
645     case MIGRATION_PARAMETER_ANNOUNCE_MAX:
646         p->has_announce_max = true;
647         visit_type_size(v, param, &p->announce_max, &err);
648         break;
649     case MIGRATION_PARAMETER_ANNOUNCE_ROUNDS:
650         p->has_announce_rounds = true;
651         visit_type_size(v, param, &p->announce_rounds, &err);
652         break;
653     case MIGRATION_PARAMETER_ANNOUNCE_STEP:
654         p->has_announce_step = true;
655         visit_type_size(v, param, &p->announce_step, &err);
656         break;
657     case MIGRATION_PARAMETER_BLOCK_BITMAP_MAPPING:
658         error_setg(&err, "The block-bitmap-mapping parameter can only be set "
659                    "through QMP");
660         break;
661     case MIGRATION_PARAMETER_X_VCPU_DIRTY_LIMIT_PERIOD:
662         p->has_x_vcpu_dirty_limit_period = true;
663         visit_type_size(v, param, &p->x_vcpu_dirty_limit_period, &err);
664         break;
665     case MIGRATION_PARAMETER_VCPU_DIRTY_LIMIT:
666         p->has_vcpu_dirty_limit = true;
667         visit_type_size(v, param, &p->vcpu_dirty_limit, &err);
668         break;
669     case MIGRATION_PARAMETER_MODE:
670         p->has_mode = true;
671         visit_type_MigMode(v, param, &p->mode, &err);
672         break;
673     default:
674         assert(0);
675     }
676 
677     if (err) {
678         goto cleanup;
679     }
680 
681     qmp_migrate_set_parameters(p, &err);
682 
683  cleanup:
684     qapi_free_MigrateSetParameters(p);
685     visit_free(v);
686     hmp_handle_error(mon, err);
687 }
688 
689 void hmp_migrate_start_postcopy(Monitor *mon, const QDict *qdict)
690 {
691     Error *err = NULL;
692     qmp_migrate_start_postcopy(&err);
693     hmp_handle_error(mon, err);
694 }
695 
696 #ifdef CONFIG_REPLICATION
697 void hmp_x_colo_lost_heartbeat(Monitor *mon, const QDict *qdict)
698 {
699     Error *err = NULL;
700 
701     qmp_x_colo_lost_heartbeat(&err);
702     hmp_handle_error(mon, err);
703 }
704 #endif
705 
706 typedef struct HMPMigrationStatus {
707     QEMUTimer *timer;
708     Monitor *mon;
709 } HMPMigrationStatus;
710 
711 static void hmp_migrate_status_cb(void *opaque)
712 {
713     HMPMigrationStatus *status = opaque;
714     MigrationInfo *info;
715 
716     info = qmp_query_migrate(NULL);
717     if (!info->has_status || info->status == MIGRATION_STATUS_ACTIVE ||
718         info->status == MIGRATION_STATUS_SETUP) {
719         if (info->disk) {
720             int progress;
721 
722             if (info->disk->remaining) {
723                 progress = info->disk->transferred * 100 / info->disk->total;
724             } else {
725                 progress = 100;
726             }
727 
728             monitor_printf(status->mon, "Completed %d %%\r", progress);
729             monitor_flush(status->mon);
730         }
731 
732         timer_mod(status->timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 1000);
733     } else {
734         if (migrate_block()) {
735             monitor_printf(status->mon, "\n");
736         }
737         if (info->error_desc) {
738             error_report("%s", info->error_desc);
739         }
740         monitor_resume(status->mon);
741         timer_free(status->timer);
742         g_free(status);
743     }
744 
745     qapi_free_MigrationInfo(info);
746 }
747 
748 void hmp_migrate(Monitor *mon, const QDict *qdict)
749 {
750     bool detach = qdict_get_try_bool(qdict, "detach", false);
751     bool blk = qdict_get_try_bool(qdict, "blk", false);
752     bool inc = qdict_get_try_bool(qdict, "inc", false);
753     bool resume = qdict_get_try_bool(qdict, "resume", false);
754     const char *uri = qdict_get_str(qdict, "uri");
755     Error *err = NULL;
756 
757     if (inc) {
758         warn_report("option '-i' is deprecated;"
759                     " use blockdev-mirror with NBD instead");
760     }
761 
762     if (blk) {
763         warn_report("option '-b' is deprecated;"
764                     " use blockdev-mirror with NBD instead");
765     }
766 
767     qmp_migrate(uri, !!blk, blk, !!inc, inc,
768                 false, false, true, resume, &err);
769     if (hmp_handle_error(mon, err)) {
770         return;
771     }
772 
773     if (!detach) {
774         HMPMigrationStatus *status;
775 
776         if (monitor_suspend(mon) < 0) {
777             monitor_printf(mon, "terminal does not allow synchronous "
778                            "migration, continuing detached\n");
779             return;
780         }
781 
782         status = g_malloc0(sizeof(*status));
783         status->mon = mon;
784         status->timer = timer_new_ms(QEMU_CLOCK_REALTIME, hmp_migrate_status_cb,
785                                           status);
786         timer_mod(status->timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
787     }
788 }
789 
790 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
791                                        const char *str)
792 {
793     size_t len;
794 
795     len = strlen(str);
796     readline_set_completion_index(rs, len);
797     if (nb_args == 2) {
798         int i;
799         for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
800             readline_add_completion_of(rs, str, MigrationCapability_str(i));
801         }
802     } else if (nb_args == 3) {
803         readline_add_completion_of(rs, str, "on");
804         readline_add_completion_of(rs, str, "off");
805     }
806 }
807 
808 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
809                                       const char *str)
810 {
811     size_t len;
812 
813     len = strlen(str);
814     readline_set_completion_index(rs, len);
815     if (nb_args == 2) {
816         int i;
817         for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
818             readline_add_completion_of(rs, str, MigrationParameter_str(i));
819         }
820     }
821 }
822 
823 static void vm_completion(ReadLineState *rs, const char *str)
824 {
825     size_t len;
826     BlockDriverState *bs;
827     BdrvNextIterator it;
828 
829     GRAPH_RDLOCK_GUARD_MAINLOOP();
830 
831     len = strlen(str);
832     readline_set_completion_index(rs, len);
833 
834     for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
835         SnapshotInfoList *snapshots, *snapshot;
836         AioContext *ctx = bdrv_get_aio_context(bs);
837         bool ok = false;
838 
839         aio_context_acquire(ctx);
840         if (bdrv_can_snapshot(bs)) {
841             ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
842         }
843         aio_context_release(ctx);
844         if (!ok) {
845             continue;
846         }
847 
848         snapshot = snapshots;
849         while (snapshot) {
850             readline_add_completion_of(rs, str, snapshot->value->name);
851             readline_add_completion_of(rs, str, snapshot->value->id);
852             snapshot = snapshot->next;
853         }
854         qapi_free_SnapshotInfoList(snapshots);
855     }
856 
857 }
858 
859 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
860 {
861     if (nb_args == 2) {
862         vm_completion(rs, str);
863     }
864 }
865 
866 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
867 {
868     if (nb_args == 2) {
869         vm_completion(rs, str);
870     }
871 }
872