qmp-commands.hx

   1 HXCOMM QMP dispatch table and documentation
   2 HXCOMM Text between SQMP and EQMP is copied to the QMP documentation file and
   3 HXCOMM does not show up in the other formats.
   4
   5 SQMP
   6                         QMP Supported Commands
   7                         ----------------------
   8
   9 This document describes all commands currently supported by QMP.
  10
  11 Most of the time their usage is exactly the same as in the user Monitor, this
  12 means that any other document which also describe commands (the manpage,
  13 QEMU's manual, etc) can and should be consulted.
  14
  15 QMP has two types of commands: regular and query commands. Regular commands
  16 usually change the Virtual Machine's state someway, while query commands just
  17 return information. The sections below are divided accordingly.
  18
  19 It's important to observe that all communication examples are formatted in
  20 a reader-friendly way, so that they're easier to understand. However, in real
  21 protocol usage, they're emitted as a single line.
  22
  23 Also, the following notation is used to denote data flow:
  24
  25 -> data issued by the Client
  26 <- Server data response
  27
  28 Please, refer to the QMP specification (QMP/qmp-spec.txt) for detailed
  29 information on the Server command and response formats.
  30
  31 NOTE: This document is temporary and will be replaced soon.
  32
  33 1. Stability Considerations
  34 ===========================
  35
  36 The current QMP command set (described in this file) may be useful for a
  37 number of use cases, however it's limited and several commands have bad
  38 defined semantics, specially with regard to command completion.
  39
  40 These problems are going to be solved incrementally in the next QEMU releases
  41 and we're going to establish a deprecation policy for badly defined commands.
  42
  43 If you're planning to adopt QMP, please observe the following:
  44
  45     1. The deprecation policy will take effect and be documented soon, please
  46        check the documentation of each used command as soon as a new release of
  47        QEMU is available
  48
  49     2. DO NOT rely on anything which is not explicit documented
  50
  51     3. Errors, in special, are not documented. Applications should NOT check
  52        for specific errors classes or data (it's strongly recommended to only
  53        check for the "error" key)
  54
  55 2. Regular Commands
  56 ===================
  57
  58 Server's responses in the examples below are always a success response, please
  59 refer to the QMP specification for more details on error responses.
  60
  61 EQMP
  62
  63     {
  64         .name       = "quit",
  65         .args_type  = "",
  66         .mhandler.cmd_new = qmp_marshal_input_quit,
  67     },
  68
  69 SQMP
  70 quit
  71 ----
  72
  73 Quit the emulator.
  74
  75 Arguments: None.
  76
  77 Example:
  78
  79 -> { "execute": "quit" }
  80 <- { "return": {} }
  81
  82 EQMP
  83
  84     {
  85         .name       = "eject",
  86         .args_type  = "force:-f,device:B",
  87         .mhandler.cmd_new = qmp_marshal_input_eject,
  88     },
  89
  90 SQMP
  91 eject
  92 -----
  93
  94 Eject a removable medium.
  95
  96 Arguments:
  97
  98 - force: force ejection (json-bool, optional)
  99 - device: device name (json-string)
 100
 101 Example:
 102
 103 -> { "execute": "eject", "arguments": { "device": "ide1-cd0" } }
 104 <- { "return": {} }
 105
 106 Note: The "force" argument defaults to false.
 107
 108 EQMP
 109
 110     {
 111         .name       = "change",
 112         .args_type  = "device:B,target:F,arg:s?",
 113         .mhandler.cmd_new = qmp_marshal_input_change,
 114     },
 115
 116 SQMP
 117 change
 118 ------
 119
 120 Change a removable medium or VNC configuration.
 121
 122 Arguments:
 123
 124 - "device": device name (json-string)
 125 - "target": filename or item (json-string)
 126 - "arg": additional argument (json-string, optional)
 127
 128 Examples:
 129
 130 1. Change a removable medium
 131
 132 -> { "execute": "change",
 133              "arguments": { "device": "ide1-cd0",
 134                             "target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
 135 <- { "return": {} }
 136
 137 2. Change VNC password
 138
 139 -> { "execute": "change",
 140              "arguments": { "device": "vnc", "target": "password",
 141                             "arg": "foobar1" } }
 142 <- { "return": {} }
 143
 144 EQMP
 145
 146     {
 147         .name       = "screendump",
 148         .args_type  = "filename:F",
 149         .mhandler.cmd_new = qmp_marshal_input_screendump,
 150     },
 151
 152 SQMP
 153 screendump
 154 ----------
 155
 156 Save screen into PPM image.
 157
 158 Arguments:
 159
 160 - "filename": file path (json-string)
 161
 162 Example:
 163
 164 -> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } }
 165 <- { "return": {} }
 166
 167 EQMP
 168
 169     {
 170         .name       = "stop",
 171         .args_type  = "",
 172         .mhandler.cmd_new = qmp_marshal_input_stop,
 173     },
 174
 175 SQMP
 176 stop
 177 ----
 178
 179 Stop the emulator.
 180
 181 Arguments: None.
 182
 183 Example:
 184
 185 -> { "execute": "stop" }
 186 <- { "return": {} }
 187
 188 EQMP
 189
 190     {
 191         .name       = "cont",
 192         .args_type  = "",
 193         .mhandler.cmd_new = qmp_marshal_input_cont,
 194     },
 195
 196 SQMP
 197 cont
 198 ----
 199
 200 Resume emulation.
 201
 202 Arguments: None.
 203
 204 Example:
 205
 206 -> { "execute": "cont" }
 207 <- { "return": {} }
 208
 209 EQMP
 210
 211     {
 212         .name       = "system_wakeup",
 213         .args_type  = "",
 214         .mhandler.cmd_new = qmp_marshal_input_system_wakeup,
 215     },
 216
 217 SQMP
 218 system_wakeup
 219 -------------
 220
 221 Wakeup guest from suspend.
 222
 223 Arguments: None.
 224
 225 Example:
 226
 227 -> { "execute": "system_wakeup" }
 228 <- { "return": {} }
 229
 230 EQMP
 231
 232     {
 233         .name       = "system_reset",
 234         .args_type  = "",
 235         .mhandler.cmd_new = qmp_marshal_input_system_reset,
 236     },
 237
 238 SQMP
 239 system_reset
 240 ------------
 241
 242 Reset the system.
 243
 244 Arguments: None.
 245
 246 Example:
 247
 248 -> { "execute": "system_reset" }
 249 <- { "return": {} }
 250
 251 EQMP
 252
 253     {
 254         .name       = "system_powerdown",
 255         .args_type  = "",
 256         .mhandler.cmd_new = qmp_marshal_input_system_powerdown,
 257     },
 258
 259 SQMP
 260 system_powerdown
 261 ----------------
 262
 263 Send system power down event.
 264
 265 Arguments: None.
 266
 267 Example:
 268
 269 -> { "execute": "system_powerdown" }
 270 <- { "return": {} }
 271
 272 EQMP
 273
 274     {
 275         .name       = "device_add",
 276         .args_type  = "device:O",
 277         .params     = "driver[,prop=value][,...]",
 278         .help       = "add device, like -device on the command line",
 279         .user_print = monitor_user_noop,
 280         .mhandler.cmd_new = do_device_add,
 281     },
 282
 283 SQMP
 284 device_add
 285 ----------
 286
 287 Add a device.
 288
 289 Arguments:
 290
 291 - "driver": the name of the new device's driver (json-string)
 292 - "bus": the device's parent bus (device tree path, json-string, optional)
 293 - "id": the device's ID, must be unique (json-string)
 294 - device properties
 295
 296 Example:
 297
 298 -> { "execute": "device_add", "arguments": { "driver": "e1000", "id": "net1" } }
 299 <- { "return": {} }
 300
 301 Notes:
 302
 303 (1) For detailed information about this command, please refer to the
 304     'docs/qdev-device-use.txt' file.
 305
 306 (2) It's possible to list device properties by running QEMU with the
 307     "-device DEVICE,\?" command-line argument, where DEVICE is the device's name
 308
 309 EQMP
 310
 311     {
 312         .name       = "device_del",
 313         .args_type  = "id:s",
 314         .mhandler.cmd_new = qmp_marshal_input_device_del,
 315     },
 316
 317 SQMP
 318 device_del
 319 ----------
 320
 321 Remove a device.
 322
 323 Arguments:
 324
 325 - "id": the device's ID (json-string)
 326
 327 Example:
 328
 329 -> { "execute": "device_del", "arguments": { "id": "net1" } }
 330 <- { "return": {} }
 331
 332 EQMP
 333
 334     {
 335         .name       = "send-key",
 336         .args_type  = "keys:O,hold-time:i?",
 337         .mhandler.cmd_new = qmp_marshal_input_send_key,
 338     },
 339
 340 SQMP
 341 send-key
 342 ----------
 343
 344 Send keys to VM.
 345
 346 Arguments:
 347
 348 keys array:
 349     - "key": key sequence (a json-array of key union values,
 350              union can be number or qcode enum)
 351
 352 - hold-time: time to delay key up events, milliseconds. Defaults to 100
 353              (json-int, optional)
 354
 355 Example:
 356
 357 -> { "execute": "send-key",
 358      "arguments": { "keys": [ { "type": "qcode", "data": "ctrl" },
 359                               { "type": "qcode", "data": "alt" },
 360                               { "type": "qcode", "data": "delete" } ] } }
 361 <- { "return": {} }
 362
 363 EQMP
 364
 365     {
 366         .name       = "cpu",
 367         .args_type  = "index:i",
 368         .mhandler.cmd_new = qmp_marshal_input_cpu,
 369     },
 370
 371 SQMP
 372 cpu
 373 ---
 374
 375 Set the default CPU.
 376
 377 Arguments:
 378
 379 - "index": the CPU's index (json-int)
 380
 381 Example:
 382
 383 -> { "execute": "cpu", "arguments": { "index": 0 } }
 384 <- { "return": {} }
 385
 386 Note: CPUs' indexes are obtained with the 'query-cpus' command.
 387
 388 EQMP
 389
 390     {
 391         .name       = "cpu-add",
 392         .args_type  = "id:i",
 393         .mhandler.cmd_new = qmp_marshal_input_cpu_add,
 394     },
 395
 396 SQMP
 397 cpu-add
 398 -------
 399
 400 Adds virtual cpu
 401
 402 Arguments:
 403
 404 - "id": cpu id (json-int)
 405
 406 Example:
 407
 408 -> { "execute": "cpu-add", "arguments": { "id": 2 } }
 409 <- { "return": {} }
 410
 411 EQMP
 412
 413     {
 414         .name       = "memsave",
 415         .args_type  = "val:l,size:i,filename:s,cpu:i?",
 416         .mhandler.cmd_new = qmp_marshal_input_memsave,
 417     },
 418
 419 SQMP
 420 memsave
 421 -------
 422
 423 Save to disk virtual memory dump starting at 'val' of size 'size'.
 424
 425 Arguments:
 426
 427 - "val": the starting address (json-int)
 428 - "size": the memory size, in bytes (json-int)
 429 - "filename": file path (json-string)
 430 - "cpu": virtual CPU index (json-int, optional)
 431
 432 Example:
 433
 434 -> { "execute": "memsave",
 435              "arguments": { "val": 10,
 436                             "size": 100,
 437                             "filename": "/tmp/virtual-mem-dump" } }
 438 <- { "return": {} }
 439
 440 EQMP
 441
 442     {
 443         .name       = "pmemsave",
 444         .args_type  = "val:l,size:i,filename:s",
 445         .mhandler.cmd_new = qmp_marshal_input_pmemsave,
 446     },
 447
 448 SQMP
 449 pmemsave
 450 --------
 451
 452 Save to disk physical memory dump starting at 'val' of size 'size'.
 453
 454 Arguments:
 455
 456 - "val": the starting address (json-int)
 457 - "size": the memory size, in bytes (json-int)
 458 - "filename": file path (json-string)
 459
 460 Example:
 461
 462 -> { "execute": "pmemsave",
 463              "arguments": { "val": 10,
 464                             "size": 100,
 465                             "filename": "/tmp/physical-mem-dump" } }
 466 <- { "return": {} }
 467
 468 EQMP
 469
 470     {
 471         .name       = "inject-nmi",
 472         .args_type  = "",
 473         .mhandler.cmd_new = qmp_marshal_input_inject_nmi,
 474     },
 475
 476 SQMP
 477 inject-nmi
 478 ----------
 479
 480 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
 481
 482 Arguments: None.
 483
 484 Example:
 485
 486 -> { "execute": "inject-nmi" }
 487 <- { "return": {} }
 488
 489 Note: inject-nmi fails when the guest doesn't support injecting.
 490
 491 EQMP
 492
 493     {
 494         .name       = "ringbuf-write",
 495         .args_type  = "device:s,data:s,format:s?",
 496         .mhandler.cmd_new = qmp_marshal_input_ringbuf_write,
 497     },
 498
 499 SQMP
 500 ringbuf-write
 501 -------------
 502
 503 Write to a ring buffer character device.
 504
 505 Arguments:
 506
 507 - "device": ring buffer character device name (json-string)
 508 - "data": data to write (json-string)
 509 - "format": data format (json-string, optional)
 510           - Possible values: "utf8" (default), "base64"
 511             Bug: invalid base64 is currently not rejected.
 512             Whitespace *is* invalid.
 513
 514 Example:
 515
 516 -> { "execute": "ringbuf-write",
 517                 "arguments": { "device": "foo",
 518                                "data": "abcdefgh",
 519                                "format": "utf8" } }
 520 <- { "return": {} }
 521
 522 EQMP
 523
 524     {
 525         .name       = "ringbuf-read",
 526         .args_type  = "device:s,size:i,format:s?",
 527         .mhandler.cmd_new = qmp_marshal_input_ringbuf_read,
 528     },
 529
 530 SQMP
 531 ringbuf-read
 532 -------------
 533
 534 Read from a ring buffer character device.
 535
 536 Arguments:
 537
 538 - "device": ring buffer character device name (json-string)
 539 - "size": how many bytes to read at most (json-int)
 540           - Number of data bytes, not number of characters in encoded data
 541 - "format": data format (json-string, optional)
 542           - Possible values: "utf8" (default), "base64"
 543           - Naturally, format "utf8" works only when the ring buffer
 544             contains valid UTF-8 text.  Invalid UTF-8 sequences get
 545             replaced.  Bug: replacement doesn't work.  Bug: can screw
 546             up on encountering NUL characters, after the ring buffer
 547             lost data, and when reading stops because the size limit
 548             is reached.
 549
 550 Example:
 551
 552 -> { "execute": "ringbuf-read",
 553                 "arguments": { "device": "foo",
 554                                "size": 1000,
 555                                "format": "utf8" } }
 556 <- {"return": "abcdefgh"}
 557
 558 EQMP
 559
 560     {
 561         .name       = "xen-save-devices-state",
 562         .args_type  = "filename:F",
 563     .mhandler.cmd_new = qmp_marshal_input_xen_save_devices_state,
 564     },
 565
 566 SQMP
 567 xen-save-devices-state
 568 -------
 569
 570 Save the state of all devices to file. The RAM and the block devices
 571 of the VM are not saved by this command.
 572
 573 Arguments:
 574
 575 - "filename": the file to save the state of the devices to as binary
 576 data. See xen-save-devices-state.txt for a description of the binary
 577 format.
 578
 579 Example:
 580
 581 -> { "execute": "xen-save-devices-state",
 582      "arguments": { "filename": "/tmp/save" } }
 583 <- { "return": {} }
 584
 585 EQMP
 586
 587     {
 588         .name       = "xen-set-global-dirty-log",
 589         .args_type  = "enable:b",
 590         .mhandler.cmd_new = qmp_marshal_input_xen_set_global_dirty_log,
 591     },
 592
 593 SQMP
 594 xen-set-global-dirty-log
 595 -------
 596
 597 Enable or disable the global dirty log mode.
 598
 599 Arguments:
 600
 601 - "enable": Enable it or disable it.
 602
 603 Example:
 604
 605 -> { "execute": "xen-set-global-dirty-log",
 606      "arguments": { "enable": true } }
 607 <- { "return": {} }
 608
 609 EQMP
 610
 611     {
 612         .name       = "migrate",
 613         .args_type  = "detach:-d,blk:-b,inc:-i,uri:s",
 614         .mhandler.cmd_new = qmp_marshal_input_migrate,
 615     },
 616
 617 SQMP
 618 migrate
 619 -------
 620
 621 Migrate to URI.
 622
 623 Arguments:
 624
 625 - "blk": block migration, full disk copy (json-bool, optional)
 626 - "inc": incremental disk copy (json-bool, optional)
 627 - "uri": Destination URI (json-string)
 628
 629 Example:
 630
 631 -> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } }
 632 <- { "return": {} }
 633
 634 Notes:
 635
 636 (1) The 'query-migrate' command should be used to check migration's progress
 637     and final result (this information is provided by the 'status' member)
 638 (2) All boolean arguments default to false
 639 (3) The user Monitor's "detach" argument is invalid in QMP and should not
 640     be used
 641
 642 EQMP
 643
 644     {
 645         .name       = "migrate_cancel",
 646         .args_type  = "",
 647         .mhandler.cmd_new = qmp_marshal_input_migrate_cancel,
 648     },
 649
 650 SQMP
 651 migrate_cancel
 652 --------------
 653
 654 Cancel the current migration.
 655
 656 Arguments: None.
 657
 658 Example:
 659
 660 -> { "execute": "migrate_cancel" }
 661 <- { "return": {} }
 662
 663 EQMP
 664 {
 665         .name       = "migrate-set-cache-size",
 666         .args_type  = "value:o",
 667         .mhandler.cmd_new = qmp_marshal_input_migrate_set_cache_size,
 668     },
 669
 670 SQMP
 671 migrate-set-cache-size
 672 ----------------------
 673
 674 Set cache size to be used by XBZRLE migration, the cache size will be rounded
 675 down to the nearest power of 2
 676
 677 Arguments:
 678
 679 - "value": cache size in bytes (json-int)
 680
 681 Example:
 682
 683 -> { "execute": "migrate-set-cache-size", "arguments": { "value": 536870912 } }
 684 <- { "return": {} }
 685
 686 EQMP
 687     {
 688         .name       = "query-migrate-cache-size",
 689         .args_type  = "",
 690         .mhandler.cmd_new = qmp_marshal_input_query_migrate_cache_size,
 691     },
 692
 693 SQMP
 694 query-migrate-cache-size
 695 ------------------------
 696
 697 Show cache size to be used by XBZRLE migration
 698
 699 returns a json-object with the following information:
 700 - "size" : json-int
 701
 702 Example:
 703
 704 -> { "execute": "query-migrate-cache-size" }
 705 <- { "return": 67108864 }
 706
 707 EQMP
 708
 709     {
 710         .name       = "migrate_set_speed",
 711         .args_type  = "value:o",
 712         .mhandler.cmd_new = qmp_marshal_input_migrate_set_speed,
 713     },
 714
 715 SQMP
 716 migrate_set_speed
 717 -----------------
 718
 719 Set maximum speed for migrations.
 720
 721 Arguments:
 722
 723 - "value": maximum speed, in bytes per second (json-int)
 724
 725 Example:
 726
 727 -> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
 728 <- { "return": {} }
 729
 730 EQMP
 731
 732     {
 733         .name       = "migrate_set_downtime",
 734         .args_type  = "value:T",
 735         .mhandler.cmd_new = qmp_marshal_input_migrate_set_downtime,
 736     },
 737
 738 SQMP
 739 migrate_set_downtime
 740 --------------------
 741
 742 Set maximum tolerated downtime (in seconds) for migrations.
 743
 744 Arguments:
 745
 746 - "value": maximum downtime (json-number)
 747
 748 Example:
 749
 750 -> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
 751 <- { "return": {} }
 752
 753 EQMP
 754
 755     {
 756         .name       = "client_migrate_info",
 757         .args_type  = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
 758         .params     = "protocol hostname port tls-port cert-subject",
 759         .help       = "send migration info to spice/vnc client",
 760         .user_print = monitor_user_noop,
 761         .mhandler.cmd_async = client_migrate_info,
 762         .flags      = MONITOR_CMD_ASYNC,
 763     },
 764
 765 SQMP
 766 client_migrate_info
 767 ------------------
 768
 769 Set the spice/vnc connection info for the migration target.  The spice/vnc
 770 server will ask the spice/vnc client to automatically reconnect using the
 771 new parameters (if specified) once the vm migration finished successfully.
 772
 773 Arguments:
 774
 775 - "protocol":     protocol: "spice" or "vnc" (json-string)
 776 - "hostname":     migration target hostname (json-string)
 777 - "port":         spice/vnc tcp port for plaintext channels (json-int, optional)
 778 - "tls-port":     spice tcp port for tls-secured channels (json-int, optional)
 779 - "cert-subject": server certificate subject (json-string, optional)
 780
 781 Example:
 782
 783 -> { "execute": "client_migrate_info",
 784      "arguments": { "protocol": "spice",
 785                     "hostname": "virt42.lab.kraxel.org",
 786                     "port": 1234 } }
 787 <- { "return": {} }
 788
 789 EQMP
 790
 791     {
 792         .name       = "dump-guest-memory",
 793         .args_type  = "paging:b,protocol:s,begin:i?,end:i?,format:s?",
 794         .params     = "-p protocol [begin] [length] [format]",
 795         .help       = "dump guest memory to file",
 796         .user_print = monitor_user_noop,
 797         .mhandler.cmd_new = qmp_marshal_input_dump_guest_memory,
 798     },
 799
 800 SQMP
 801 dump
 802
 803
 804 Dump guest memory to file. The file can be processed with crash or gdb.
 805
 806 Arguments:
 807
 808 - "paging": do paging to get guest's memory mapping (json-bool)
 809 - "protocol": destination file(started with "file:") or destination file
 810               descriptor (started with "fd:") (json-string)
 811 - "begin": the starting physical address. It's optional, and should be specified
 812            with length together (json-int)
 813 - "length": the memory size, in bytes. It's optional, and should be specified
 814             with begin together (json-int)
 815 - "format": the format of guest memory dump. It's optional, and can be
 816             elf|kdump-zlib|kdump-lzo|kdump-snappy, but non-elf formats will
 817             conflict with paging and filter, ie. begin and length (json-string)
 818
 819 Example:
 820
 821 -> { "execute": "dump-guest-memory", "arguments": { "protocol": "fd:dump" } }
 822 <- { "return": {} }
 823
 824 Notes:
 825
 826 (1) All boolean arguments default to false
 827
 828 EQMP
 829
 830     {
 831         .name       = "query-dump-guest-memory-capability",
 832         .args_type  = "",
 833     .mhandler.cmd_new = qmp_marshal_input_query_dump_guest_memory_capability,
 834     },
 835
 836 SQMP
 837 query-dump-guest-memory-capability
 838 ----------
 839
 840 Show available formats for 'dump-guest-memory'
 841
 842 Example:
 843
 844 -> { "execute": "query-dump-guest-memory-capability" }
 845 <- { "return": { "formats":
 846                     ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
 847
 848 EQMP
 849
 850     {
 851         .name       = "netdev_add",
 852         .args_type  = "netdev:O",
 853         .mhandler.cmd_new = qmp_netdev_add,
 854     },
 855
 856 SQMP
 857 netdev_add
 858 ----------
 859
 860 Add host network device.
 861
 862 Arguments:
 863
 864 - "type": the device type, "tap", "user", ... (json-string)
 865 - "id": the device's ID, must be unique (json-string)
 866 - device options
 867
 868 Example:
 869
 870 -> { "execute": "netdev_add", "arguments": { "type": "user", "id": "netdev1" } }
 871 <- { "return": {} }
 872
 873 Note: The supported device options are the same ones supported by the '-netdev'
 874       command-line argument, which are listed in the '-help' output or QEMU's
 875       manual
 876
 877 EQMP
 878
 879     {
 880         .name       = "netdev_del",
 881         .args_type  = "id:s",
 882         .mhandler.cmd_new = qmp_marshal_input_netdev_del,
 883     },
 884
 885 SQMP
 886 netdev_del
 887 ----------
 888
 889 Remove host network device.
 890
 891 Arguments:
 892
 893 - "id": the device's ID, must be unique (json-string)
 894
 895 Example:
 896
 897 -> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
 898 <- { "return": {} }
 899
 900
 901 EQMP
 902
 903     {
 904         .name       = "object-add",
 905         .args_type  = "qom-type:s,id:s,props:q?",
 906         .mhandler.cmd_new = qmp_object_add,
 907     },
 908
 909 SQMP
 910 object-add
 911 ----------
 912
 913 Create QOM object.
 914
 915 Arguments:
 916
 917 - "qom-type": the object's QOM type, i.e. the class name (json-string)
 918 - "id": the object's ID, must be unique (json-string)
 919 - "props": a dictionary of object property values (optional, json-dict)
 920
 921 Example:
 922
 923 -> { "execute": "object-add", "arguments": { "qom-type": "rng-random", "id": "rng1",
 924      "props": { "filename": "/dev/hwrng" } } }
 925 <- { "return": {} }
 926
 927 EQMP
 928
 929     {
 930         .name       = "object-del",
 931         .args_type  = "id:s",
 932         .mhandler.cmd_new = qmp_marshal_input_object_del,
 933     },
 934
 935 SQMP
 936 object-del
 937 ----------
 938
 939 Remove QOM object.
 940
 941 Arguments:
 942
 943 - "id": the object's ID (json-string)
 944
 945 Example:
 946
 947 -> { "execute": "object-del", "arguments": { "id": "rng1" } }
 948 <- { "return": {} }
 949
 950
 951 EQMP
 952
 953
 954     {
 955         .name       = "block_resize",
 956         .args_type  = "device:s?,node-name:s?,size:o",
 957         .mhandler.cmd_new = qmp_marshal_input_block_resize,
 958     },
 959
 960 SQMP
 961 block_resize
 962 ------------
 963
 964 Resize a block image while a guest is running.
 965
 966 Arguments:
 967
 968 - "device": the device's ID, must be unique (json-string)
 969 - "node-name": the node name in the block driver state graph (json-string)
 970 - "size": new size
 971
 972 Example:
 973
 974 -> { "execute": "block_resize", "arguments": { "device": "scratch", "size": 1073741824 } }
 975 <- { "return": {} }
 976
 977 EQMP
 978
 979     {
 980         .name       = "block-stream",
 981         .args_type  = "device:B,base:s?,speed:o?,backing-file:s?,on-error:s?",
 982         .mhandler.cmd_new = qmp_marshal_input_block_stream,
 983     },
 984
 985     {
 986         .name       = "block-commit",
 987         .args_type  = "device:B,base:s?,top:s?,backing-file:s?,speed:o?",
 988         .mhandler.cmd_new = qmp_marshal_input_block_commit,
 989     },
 990
 991 SQMP
 992 block-commit
 993 ------------
 994
 995 Live commit of data from overlay image nodes into backing nodes - i.e., writes
 996 data between 'top' and 'base' into 'base'.
 997
 998 Arguments:
 999
1000 - "device": The device's ID, must be unique (json-string)
1001 - "base": The file name of the backing image to write data into.
1002           If not specified, this is the deepest backing image
1003           (json-string, optional)
1004 - "top":  The file name of the backing image within the image chain,
1005           which contains the topmost data to be committed down. If
1006           not specified, this is the active layer. (json-string, optional)
1007
1008 - backing-file:     The backing file string to write into the overlay
1009                     image of 'top'.  If 'top' is the active layer,
1010                     specifying a backing file string is an error. This
1011                     filename is not validated.
1012
1013                     If a pathname string is such that it cannot be
1014                     resolved by QEMU, that means that subsequent QMP or
1015                     HMP commands must use node-names for the image in
1016                     question, as filename lookup methods will fail.
1017
1018                     If not specified, QEMU will automatically determine
1019                     the backing file string to use, or error out if
1020                     there is no obvious choice. Care should be taken
1021                     when specifying the string, to specify a valid
1022                     filename or protocol.
1023                     (json-string, optional) (Since 2.1)
1024
1025           If top == base, that is an error.
1026           If top == active, the job will not be completed by itself,
1027           user needs to complete the job with the block-job-complete
1028           command after getting the ready event. (Since 2.0)
1029
1030           If the base image is smaller than top, then the base image
1031           will be resized to be the same size as top.  If top is
1032           smaller than the base image, the base will not be
1033           truncated.  If you want the base image size to match the
1034           size of the smaller top, you can safely truncate it
1035           yourself once the commit operation successfully completes.
1036           (json-string)
1037 - "speed":  the maximum speed, in bytes per second (json-int, optional)
1038
1039
1040 Example:
1041
1042 -> { "execute": "block-commit", "arguments": { "device": "virtio0",
1043                                               "top": "/tmp/snap1.qcow2" } }
1044 <- { "return": {} }
1045
1046 EQMP
1047
1048     {
1049         .name       = "drive-backup",
1050         .args_type  = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?,"
1051                       "on-source-error:s?,on-target-error:s?",
1052         .mhandler.cmd_new = qmp_marshal_input_drive_backup,
1053     },
1054
1055 SQMP
1056 drive-backup
1057 ------------
1058
1059 Start a point-in-time copy of a block device to a new destination.  The
1060 status of ongoing drive-backup operations can be checked with
1061 query-block-jobs where the BlockJobInfo.type field has the value 'backup'.
1062 The operation can be stopped before it has completed using the
1063 block-job-cancel command.
1064
1065 Arguments:
1066
1067 - "device": the name of the device which should be copied.
1068             (json-string)
1069 - "target": the target of the new image. If the file exists, or if it is a
1070             device, the existing file/device will be used as the new
1071             destination.  If it does not exist, a new file will be created.
1072             (json-string)
1073 - "format": the format of the new destination, default is to probe if 'mode' is
1074             'existing', else the format of the source
1075             (json-string, optional)
1076 - "sync": what parts of the disk image should be copied to the destination;
1077   possibilities include "full" for all the disk, "top" for only the sectors
1078   allocated in the topmost image, or "none" to only replicate new I/O
1079   (MirrorSyncMode).
1080 - "mode": whether and how QEMU should create a new image
1081           (NewImageMode, optional, default 'absolute-paths')
1082 - "speed": the maximum speed, in bytes per second (json-int, optional)
1083 - "on-source-error": the action to take on an error on the source, default
1084                      'report'.  'stop' and 'enospc' can only be used
1085                      if the block device supports io-status.
1086                      (BlockdevOnError, optional)
1087 - "on-target-error": the action to take on an error on the target, default
1088                      'report' (no limitations, since this applies to
1089                      a different block device than device).
1090                      (BlockdevOnError, optional)
1091
1092 Example:
1093 -> { "execute": "drive-backup", "arguments": { "device": "drive0",
1094                                                "sync": "full",
1095                                                "target": "backup.img" } }
1096 <- { "return": {} }
1097
1098 EQMP
1099
1100     {
1101         .name       = "blockdev-backup",
1102         .args_type  = "sync:s,device:B,target:B,speed:i?,"
1103                       "on-source-error:s?,on-target-error:s?",
1104         .mhandler.cmd_new = qmp_marshal_input_blockdev_backup,
1105     },
1106
1107 SQMP
1108 blockdev-backup
1109 ---------------
1110
1111 The device version of drive-backup: this command takes an existing named device
1112 as backup target.
1113
1114 Arguments:
1115
1116 - "device": the name of the device which should be copied.
1117             (json-string)
1118 - "target": the name of the backup target device. (json-string)
1119 - "sync": what parts of the disk image should be copied to the destination;
1120           possibilities include "full" for all the disk, "top" for only the
1121           sectors allocated in the topmost image, or "none" to only replicate
1122           new I/O (MirrorSyncMode).
1123 - "speed": the maximum speed, in bytes per second (json-int, optional)
1124 - "on-source-error": the action to take on an error on the source, default
1125                      'report'.  'stop' and 'enospc' can only be used
1126                      if the block device supports io-status.
1127                      (BlockdevOnError, optional)
1128 - "on-target-error": the action to take on an error on the target, default
1129                      'report' (no limitations, since this applies to
1130                      a different block device than device).
1131                      (BlockdevOnError, optional)
1132
1133 Example:
1134 -> { "execute": "blockdev-backup", "arguments": { "device": "src-id",
1135                                                   "sync": "full",
1136                                                   "target": "tgt-id" } }
1137 <- { "return": {} }
1138
1139 EQMP
1140
1141     {
1142         .name       = "block-job-set-speed",
1143         .args_type  = "device:B,speed:o",
1144         .mhandler.cmd_new = qmp_marshal_input_block_job_set_speed,
1145     },
1146
1147     {
1148         .name       = "block-job-cancel",
1149         .args_type  = "device:B,force:b?",
1150         .mhandler.cmd_new = qmp_marshal_input_block_job_cancel,
1151     },
1152     {
1153         .name       = "block-job-pause",
1154         .args_type  = "device:B",
1155         .mhandler.cmd_new = qmp_marshal_input_block_job_pause,
1156     },
1157     {
1158         .name       = "block-job-resume",
1159         .args_type  = "device:B",
1160         .mhandler.cmd_new = qmp_marshal_input_block_job_resume,
1161     },
1162     {
1163         .name       = "block-job-complete",
1164         .args_type  = "device:B",
1165         .mhandler.cmd_new = qmp_marshal_input_block_job_complete,
1166     },
1167     {
1168         .name       = "transaction",
1169         .args_type  = "actions:q",
1170         .mhandler.cmd_new = qmp_marshal_input_transaction,
1171     },
1172
1173 SQMP
1174 transaction
1175 -----------
1176
1177 Atomically operate on one or more block devices.  The only supported operations
1178 for now are drive-backup, internal and external snapshotting.  A list of
1179 dictionaries is accepted, that contains the actions to be performed.
1180 If there is any failure performing any of the operations, all operations
1181 for the group are abandoned.
1182
1183 For external snapshots, the dictionary contains the device, the file to use for
1184 the new snapshot, and the format.  The default format, if not specified, is
1185 qcow2.
1186
1187 Each new snapshot defaults to being created by QEMU (wiping any
1188 contents if the file already exists), but it is also possible to reuse
1189 an externally-created file.  In the latter case, you should ensure that
1190 the new image file has the same contents as the current one; QEMU cannot
1191 perform any meaningful check.  Typically this is achieved by using the
1192 current image file as the backing file for the new image.
1193
1194 On failure, the original disks pre-snapshot attempt will be used.
1195
1196 For internal snapshots, the dictionary contains the device and the snapshot's
1197 name.  If an internal snapshot matching name already exists, the request will
1198 be rejected.  Only some image formats support it, for example, qcow2, rbd,
1199 and sheepdog.
1200
1201 On failure, qemu will try delete the newly created internal snapshot in the
1202 transaction.  When an I/O error occurs during deletion, the user needs to fix
1203 it later with qemu-img or other command.
1204
1205 Arguments:
1206
1207 actions array:
1208     - "type": the operation to perform.  The only supported
1209       value is "blockdev-snapshot-sync". (json-string)
1210     - "data": a dictionary.  The contents depend on the value
1211       of "type".  When "type" is "blockdev-snapshot-sync":
1212       - "device": device name to snapshot (json-string)
1213       - "node-name": graph node name to snapshot (json-string)
1214       - "snapshot-file": name of new image file (json-string)
1215       - "snapshot-node-name": graph node name of the new snapshot (json-string)
1216       - "format": format of new image (json-string, optional)
1217       - "mode": whether and how QEMU should create the snapshot file
1218         (NewImageMode, optional, default "absolute-paths")
1219       When "type" is "blockdev-snapshot-internal-sync":
1220       - "device": device name to snapshot (json-string)
1221       - "name": name of the new snapshot (json-string)
1222
1223 Example:
1224
1225 -> { "execute": "transaction",
1226      "arguments": { "actions": [
1227          { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd0",
1228                                          "snapshot-file": "/some/place/my-image",
1229                                          "format": "qcow2" } },
1230          { "type": "blockdev-snapshot-sync", "data" : { "node-name": "myfile",
1231                                          "snapshot-file": "/some/place/my-image2",
1232                                          "snapshot-node-name": "node3432",
1233                                          "mode": "existing",
1234                                          "format": "qcow2" } },
1235          { "type": "blockdev-snapshot-sync", "data" : { "device": "ide-hd1",
1236                                          "snapshot-file": "/some/place/my-image2",
1237                                          "mode": "existing",
1238                                          "format": "qcow2" } },
1239          { "type": "blockdev-snapshot-internal-sync", "data" : {
1240                                          "device": "ide-hd2",
1241                                          "name": "snapshot0" } } ] } }
1242 <- { "return": {} }
1243
1244 EQMP
1245
1246     {
1247         .name       = "blockdev-snapshot-sync",
1248         .args_type  = "device:s?,node-name:s?,snapshot-file:s,snapshot-node-name:s?,format:s?,mode:s?",
1249         .mhandler.cmd_new = qmp_marshal_input_blockdev_snapshot_sync,
1250     },
1251
1252 SQMP
1253 blockdev-snapshot-sync
1254 ----------------------
1255
1256 Synchronous snapshot of a block device. snapshot-file specifies the
1257 target of the new image. If the file exists, or if it is a device, the
1258 snapshot will be created in the existing file/device. If does not
1259 exist, a new file will be created. format specifies the format of the
1260 snapshot image, default is qcow2.
1261
1262 Arguments:
1263
1264 - "device": device name to snapshot (json-string)
1265 - "node-name": graph node name to snapshot (json-string)
1266 - "snapshot-file": name of new image file (json-string)
1267 - "snapshot-node-name": graph node name of the new snapshot (json-string)
1268 - "mode": whether and how QEMU should create the snapshot file
1269   (NewImageMode, optional, default "absolute-paths")
1270 - "format": format of new image (json-string, optional)
1271
1272 Example:
1273
1274 -> { "execute": "blockdev-snapshot-sync", "arguments": { "device": "ide-hd0",
1275                                                          "snapshot-file":
1276                                                         "/some/place/my-image",
1277                                                         "format": "qcow2" } }
1278 <- { "return": {} }
1279
1280 EQMP
1281
1282     {
1283         .name       = "blockdev-snapshot-internal-sync",
1284         .args_type  = "device:B,name:s",
1285         .mhandler.cmd_new = qmp_marshal_input_blockdev_snapshot_internal_sync,
1286     },
1287
1288 SQMP
1289 blockdev-snapshot-internal-sync
1290 -------------------------------
1291
1292 Synchronously take an internal snapshot of a block device when the format of
1293 image used supports it.  If the name is an empty string, or a snapshot with
1294 name already exists, the operation will fail.
1295
1296 Arguments:
1297
1298 - "device": device name to snapshot (json-string)
1299 - "name": name of the new snapshot (json-string)
1300
1301 Example:
1302
1303 -> { "execute": "blockdev-snapshot-internal-sync",
1304                 "arguments": { "device": "ide-hd0",
1305                                "name": "snapshot0" }
1306    }
1307 <- { "return": {} }
1308
1309 EQMP
1310
1311     {
1312         .name       = "blockdev-snapshot-delete-internal-sync",
1313         .args_type  = "device:B,id:s?,name:s?",
1314         .mhandler.cmd_new =
1315                       qmp_marshal_input_blockdev_snapshot_delete_internal_sync,
1316     },
1317
1318 SQMP
1319 blockdev-snapshot-delete-internal-sync
1320 --------------------------------------
1321
1322 Synchronously delete an internal snapshot of a block device when the format of
1323 image used supports it.  The snapshot is identified by name or id or both.  One
1324 of name or id is required.  If the snapshot is not found, the operation will
1325 fail.
1326
1327 Arguments:
1328
1329 - "device": device name (json-string)
1330 - "id": ID of the snapshot (json-string, optional)
1331 - "name": name of the snapshot (json-string, optional)
1332
1333 Example:
1334
1335 -> { "execute": "blockdev-snapshot-delete-internal-sync",
1336                 "arguments": { "device": "ide-hd0",
1337                                "name": "snapshot0" }
1338    }
1339 <- { "return": {
1340                    "id": "1",
1341                    "name": "snapshot0",
1342                    "vm-state-size": 0,
1343                    "date-sec": 1000012,
1344                    "date-nsec": 10,
1345                    "vm-clock-sec": 100,
1346                    "vm-clock-nsec": 20
1347      }
1348    }
1349
1350 EQMP
1351
1352     {
1353         .name       = "drive-mirror",
1354         .args_type  = "sync:s,device:B,target:s,speed:i?,mode:s?,format:s?,"
1355                       "node-name:s?,replaces:s?,"
1356                       "on-source-error:s?,on-target-error:s?,"
1357                       "granularity:i?,buf-size:i?",
1358         .mhandler.cmd_new = qmp_marshal_input_drive_mirror,
1359     },
1360
1361 SQMP
1362 drive-mirror
1363 ------------
1364
1365 Start mirroring a block device's writes to a new destination. target
1366 specifies the target of the new image. If the file exists, or if it is
1367 a device, it will be used as the new destination for writes. If it does not
1368 exist, a new file will be created. format specifies the format of the
1369 mirror image, default is to probe if mode='existing', else the format
1370 of the source.
1371
1372 Arguments:
1373
1374 - "device": device name to operate on (json-string)
1375 - "target": name of new image file (json-string)
1376 - "format": format of new image (json-string, optional)
1377 - "node-name": the name of the new block driver state in the node graph
1378                (json-string, optional)
1379 - "replaces": the block driver node name to replace when finished
1380               (json-string, optional)
1381 - "mode": how an image file should be created into the target
1382   file/device (NewImageMode, optional, default 'absolute-paths')
1383 - "speed": maximum speed of the streaming job, in bytes per second
1384   (json-int)
1385 - "granularity": granularity of the dirty bitmap, in bytes (json-int, optional)
1386 - "buf_size": maximum amount of data in flight from source to target, in bytes
1387   (json-int, default 10M)
1388 - "sync": what parts of the disk image should be copied to the destination;
1389   possibilities include "full" for all the disk, "top" for only the sectors
1390   allocated in the topmost image, or "none" to only replicate new I/O
1391   (MirrorSyncMode).
1392 - "on-source-error": the action to take on an error on the source
1393   (BlockdevOnError, default 'report')
1394 - "on-target-error": the action to take on an error on the target
1395   (BlockdevOnError, default 'report')
1396
1397 The default value of the granularity is the image cluster size clamped
1398 between 4096 and 65536, if the image format defines one.  If the format
1399 does not define a cluster size, the default value of the granularity
1400 is 65536.
1401
1402
1403 Example:
1404
1405 -> { "execute": "drive-mirror", "arguments": { "device": "ide-hd0",
1406                                                "target": "/some/place/my-image",
1407                                                "sync": "full",
1408                                                "format": "qcow2" } }
1409 <- { "return": {} }
1410
1411 EQMP
1412
1413     {
1414         .name       = "change-backing-file",
1415         .args_type  = "device:s,image-node-name:s,backing-file:s",
1416         .mhandler.cmd_new = qmp_marshal_input_change_backing_file,
1417     },
1418
1419 SQMP
1420 change-backing-file
1421 -------------------
1422 Since: 2.1
1423
1424 Change the backing file in the image file metadata.  This does not cause
1425 QEMU to reopen the image file to reparse the backing filename (it may,
1426 however, perform a reopen to change permissions from r/o -> r/w -> r/o,
1427 if needed). The new backing file string is written into the image file
1428 metadata, and the QEMU internal strings are updated.
1429
1430 Arguments:
1431
1432 - "image-node-name":    The name of the block driver state node of the
1433                         image to modify.  The "device" is argument is used to
1434                         verify "image-node-name" is in the chain described by
1435                         "device".
1436                         (json-string, optional)
1437
1438 - "device":             The name of the device.
1439                         (json-string)
1440
1441 - "backing-file":       The string to write as the backing file.  This string is
1442                         not validated, so care should be taken when specifying
1443                         the string or the image chain may not be able to be
1444                         reopened again.
1445                         (json-string)
1446
1447 Returns: Nothing on success
1448          If "device" does not exist or cannot be determined, DeviceNotFound
1449
1450 EQMP
1451
1452     {
1453         .name       = "balloon",
1454         .args_type  = "value:M",
1455         .mhandler.cmd_new = qmp_marshal_input_balloon,
1456     },
1457
1458 SQMP
1459 balloon
1460 -------
1461
1462 Request VM to change its memory allocation (in bytes).
1463
1464 Arguments:
1465
1466 - "value": New memory allocation (json-int)
1467
1468 Example:
1469
1470 -> { "execute": "balloon", "arguments": { "value": 536870912 } }
1471 <- { "return": {} }
1472
1473 EQMP
1474
1475     {
1476         .name       = "set_link",
1477         .args_type  = "name:s,up:b",
1478         .mhandler.cmd_new = qmp_marshal_input_set_link,
1479     },
1480
1481 SQMP
1482 set_link
1483 --------
1484
1485 Change the link status of a network adapter.
1486
1487 Arguments:
1488
1489 - "name": network device name (json-string)
1490 - "up": status is up (json-bool)
1491
1492 Example:
1493
1494 -> { "execute": "set_link", "arguments": { "name": "e1000.0", "up": false } }
1495 <- { "return": {} }
1496
1497 EQMP
1498
1499     {
1500         .name       = "getfd",
1501         .args_type  = "fdname:s",
1502         .params     = "getfd name",
1503         .help       = "receive a file descriptor via SCM rights and assign it a name",
1504         .mhandler.cmd_new = qmp_marshal_input_getfd,
1505     },
1506
1507 SQMP
1508 getfd
1509 -----
1510
1511 Receive a file descriptor via SCM rights and assign it a name.
1512
1513 Arguments:
1514
1515 - "fdname": file descriptor name (json-string)
1516
1517 Example:
1518
1519 -> { "execute": "getfd", "arguments": { "fdname": "fd1" } }
1520 <- { "return": {} }
1521
1522 Notes:
1523
1524 (1) If the name specified by the "fdname" argument already exists,
1525     the file descriptor assigned to it will be closed and replaced
1526     by the received file descriptor.
1527 (2) The 'closefd' command can be used to explicitly close the file
1528     descriptor when it is no longer needed.
1529
1530 EQMP
1531
1532     {
1533         .name       = "closefd",
1534         .args_type  = "fdname:s",
1535         .params     = "closefd name",
1536         .help       = "close a file descriptor previously passed via SCM rights",
1537         .mhandler.cmd_new = qmp_marshal_input_closefd,
1538     },
1539
1540 SQMP
1541 closefd
1542 -------
1543
1544 Close a file descriptor previously passed via SCM rights.
1545
1546 Arguments:
1547
1548 - "fdname": file descriptor name (json-string)
1549
1550 Example:
1551
1552 -> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
1553 <- { "return": {} }
1554
1555 EQMP
1556
1557      {
1558         .name       = "add-fd",
1559         .args_type  = "fdset-id:i?,opaque:s?",
1560         .params     = "add-fd fdset-id opaque",
1561         .help       = "Add a file descriptor, that was passed via SCM rights, to an fd set",
1562         .mhandler.cmd_new = qmp_marshal_input_add_fd,
1563     },
1564
1565 SQMP
1566 add-fd
1567 -------
1568
1569 Add a file descriptor, that was passed via SCM rights, to an fd set.
1570
1571 Arguments:
1572
1573 - "fdset-id": The ID of the fd set to add the file descriptor to.
1574               (json-int, optional)
1575 - "opaque": A free-form string that can be used to describe the fd.
1576             (json-string, optional)
1577
1578 Return a json-object with the following information:
1579
1580 - "fdset-id": The ID of the fd set that the fd was added to. (json-int)
1581 - "fd": The file descriptor that was received via SCM rights and added to the
1582         fd set. (json-int)
1583
1584 Example:
1585
1586 -> { "execute": "add-fd", "arguments": { "fdset-id": 1 } }
1587 <- { "return": { "fdset-id": 1, "fd": 3 } }
1588
1589 Notes:
1590
1591 (1) The list of fd sets is shared by all monitor connections.
1592 (2) If "fdset-id" is not specified, a new fd set will be created.
1593
1594 EQMP
1595
1596      {
1597         .name       = "remove-fd",
1598         .args_type  = "fdset-id:i,fd:i?",
1599         .params     = "remove-fd fdset-id fd",
1600         .help       = "Remove a file descriptor from an fd set",
1601         .mhandler.cmd_new = qmp_marshal_input_remove_fd,
1602     },
1603
1604 SQMP
1605 remove-fd
1606 ---------
1607
1608 Remove a file descriptor from an fd set.
1609
1610 Arguments:
1611
1612 - "fdset-id": The ID of the fd set that the file descriptor belongs to.
1613               (json-int)
1614 - "fd": The file descriptor that is to be removed. (json-int, optional)
1615
1616 Example:
1617
1618 -> { "execute": "remove-fd", "arguments": { "fdset-id": 1, "fd": 3 } }
1619 <- { "return": {} }
1620
1621 Notes:
1622
1623 (1) The list of fd sets is shared by all monitor connections.
1624 (2) If "fd" is not specified, all file descriptors in "fdset-id" will be
1625     removed.
1626
1627 EQMP
1628
1629     {
1630         .name       = "query-fdsets",
1631         .args_type  = "",
1632         .help       = "Return information describing all fd sets",
1633         .mhandler.cmd_new = qmp_marshal_input_query_fdsets,
1634     },
1635
1636 SQMP
1637 query-fdsets
1638 -------------
1639
1640 Return information describing all fd sets.
1641
1642 Arguments: None
1643
1644 Example:
1645
1646 -> { "execute": "query-fdsets" }
1647 <- { "return": [
1648        {
1649          "fds": [
1650            {
1651              "fd": 30,
1652              "opaque": "rdonly:/path/to/file"
1653            },
1654            {
1655              "fd": 24,
1656              "opaque": "rdwr:/path/to/file"
1657            }
1658          ],
1659          "fdset-id": 1
1660        },
1661        {
1662          "fds": [
1663            {
1664              "fd": 28
1665            },
1666            {
1667              "fd": 29
1668            }
1669          ],
1670          "fdset-id": 0
1671        }
1672      ]
1673    }
1674
1675 Note: The list of fd sets is shared by all monitor connections.
1676
1677 EQMP
1678
1679     {
1680         .name       = "block_passwd",
1681         .args_type  = "device:s?,node-name:s?,password:s",
1682         .mhandler.cmd_new = qmp_marshal_input_block_passwd,
1683     },
1684
1685 SQMP
1686 block_passwd
1687 ------------
1688
1689 Set the password of encrypted block devices.
1690
1691 Arguments:
1692
1693 - "device": device name (json-string)
1694 - "node-name": name in the block driver state graph (json-string)
1695 - "password": password (json-string)
1696
1697 Example:
1698
1699 -> { "execute": "block_passwd", "arguments": { "device": "ide0-hd0",
1700                                                "password": "12345" } }
1701 <- { "return": {} }
1702
1703 EQMP
1704
1705     {
1706         .name       = "block_set_io_throttle",
1707         .args_type  = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l,bps_max:l?,bps_rd_max:l?,bps_wr_max:l?,iops_max:l?,iops_rd_max:l?,iops_wr_max:l?,iops_size:l?",
1708         .mhandler.cmd_new = qmp_marshal_input_block_set_io_throttle,
1709     },
1710
1711 SQMP
1712 block_set_io_throttle
1713 ------------
1714
1715 Change I/O throttle limits for a block drive.
1716
1717 Arguments:
1718
1719 - "device": device name (json-string)
1720 - "bps": total throughput limit in bytes per second (json-int)
1721 - "bps_rd": read throughput limit in bytes per second (json-int)
1722 - "bps_wr": write throughput limit in bytes per second (json-int)
1723 - "iops": total I/O operations per second (json-int)
1724 - "iops_rd": read I/O operations per second (json-int)
1725 - "iops_wr": write I/O operations per second (json-int)
1726 - "bps_max":  total max in bytes (json-int)
1727 - "bps_rd_max":  read max in bytes (json-int)
1728 - "bps_wr_max":  write max in bytes (json-int)
1729 - "iops_max":  total I/O operations max (json-int)
1730 - "iops_rd_max":  read I/O operations max (json-int)
1731 - "iops_wr_max":  write I/O operations max (json-int)
1732 - "iops_size":  I/O size in bytes when limiting (json-int)
1733
1734 Example:
1735
1736 -> { "execute": "block_set_io_throttle", "arguments": { "device": "virtio0",
1737                                                "bps": 1000000,
1738                                                "bps_rd": 0,
1739                                                "bps_wr": 0,
1740                                                "iops": 0,
1741                                                "iops_rd": 0,
1742                                                "iops_wr": 0,
1743                                                "bps_max": 8000000,
1744                                                "bps_rd_max": 0,
1745                                                "bps_wr_max": 0,
1746                                                "iops_max": 0,
1747                                                "iops_rd_max": 0,
1748                                                "iops_wr_max": 0,
1749                                                "iops_size": 0 } }
1750 <- { "return": {} }
1751
1752 EQMP
1753
1754     {
1755         .name       = "set_password",
1756         .args_type  = "protocol:s,password:s,connected:s?",
1757         .mhandler.cmd_new = qmp_marshal_input_set_password,
1758     },
1759
1760 SQMP
1761 set_password
1762 ------------
1763
1764 Set the password for vnc/spice protocols.
1765
1766 Arguments:
1767
1768 - "protocol": protocol name (json-string)
1769 - "password": password (json-string)
1770 - "connected": [ keep | disconnect | fail ] (json-string, optional)
1771
1772 Example:
1773
1774 -> { "execute": "set_password", "arguments": { "protocol": "vnc",
1775                                                "password": "secret" } }
1776 <- { "return": {} }
1777
1778 EQMP
1779
1780     {
1781         .name       = "expire_password",
1782         .args_type  = "protocol:s,time:s",
1783         .mhandler.cmd_new = qmp_marshal_input_expire_password,
1784     },
1785
1786 SQMP
1787 expire_password
1788 ---------------
1789
1790 Set the password expire time for vnc/spice protocols.
1791
1792 Arguments:
1793
1794 - "protocol": protocol name (json-string)
1795 - "time": [ now | never | +secs | secs ] (json-string)
1796
1797 Example:
1798
1799 -> { "execute": "expire_password", "arguments": { "protocol": "vnc",
1800                                                   "time": "+60" } }
1801 <- { "return": {} }
1802
1803 EQMP
1804
1805     {
1806         .name       = "add_client",
1807         .args_type  = "protocol:s,fdname:s,skipauth:b?,tls:b?",
1808         .mhandler.cmd_new = qmp_marshal_input_add_client,
1809     },
1810
1811 SQMP
1812 add_client
1813 ----------
1814
1815 Add a graphics client
1816
1817 Arguments:
1818
1819 - "protocol": protocol name (json-string)
1820 - "fdname": file descriptor name (json-string)
1821 - "skipauth": whether to skip authentication (json-bool, optional)
1822 - "tls": whether to perform TLS (json-bool, optional)
1823
1824 Example:
1825
1826 -> { "execute": "add_client", "arguments": { "protocol": "vnc",
1827                                              "fdname": "myclient" } }
1828 <- { "return": {} }
1829
1830 EQMP
1831     {
1832         .name       = "qmp_capabilities",
1833         .args_type  = "",
1834         .params     = "",
1835         .help       = "enable QMP capabilities",
1836         .user_print = monitor_user_noop,
1837         .mhandler.cmd_new = do_qmp_capabilities,
1838     },
1839
1840 SQMP
1841 qmp_capabilities
1842 ----------------
1843
1844 Enable QMP capabilities.
1845
1846 Arguments: None.
1847
1848 Example:
1849
1850 -> { "execute": "qmp_capabilities" }
1851 <- { "return": {} }
1852
1853 Note: This command must be issued before issuing any other command.
1854
1855 EQMP
1856
1857     {
1858         .name       = "human-monitor-command",
1859         .args_type  = "command-line:s,cpu-index:i?",
1860         .mhandler.cmd_new = qmp_marshal_input_human_monitor_command,
1861     },
1862
1863 SQMP
1864 human-monitor-command
1865 ---------------------
1866
1867 Execute a Human Monitor command.
1868
1869 Arguments:
1870
1871 - command-line: the command name and its arguments, just like the
1872                 Human Monitor's shell (json-string)
1873 - cpu-index: select the CPU number to be used by commands which access CPU
1874              data, like 'info registers'. The Monitor selects CPU 0 if this
1875              argument is not provided (json-int, optional)
1876
1877 Example:
1878
1879 -> { "execute": "human-monitor-command", "arguments": { "command-line": "info kvm" } }
1880 <- { "return": "kvm support: enabled\r\n" }
1881
1882 Notes:
1883
1884 (1) The Human Monitor is NOT an stable interface, this means that command
1885     names, arguments and responses can change or be removed at ANY time.
1886     Applications that rely on long term stability guarantees should NOT
1887     use this command
1888
1889 (2) Limitations:
1890
1891     o This command is stateless, this means that commands that depend
1892       on state information (such as getfd) might not work
1893
1894     o Commands that prompt the user for data (eg. 'cont' when the block
1895       device is encrypted) don't currently work
1896
1897 3. Query Commands
1898 =================
1899
1900 HXCOMM Each query command below is inside a SQMP/EQMP section, do NOT change
1901 HXCOMM this! We will possibly move query commands definitions inside those
1902 HXCOMM sections, just like regular commands.
1903
1904 EQMP
1905
1906 SQMP
1907 query-version
1908 -------------
1909
1910 Show QEMU version.
1911
1912 Return a json-object with the following information:
1913
1914 - "qemu": A json-object containing three integer values:
1915     - "major": QEMU's major version (json-int)
1916     - "minor": QEMU's minor version (json-int)
1917     - "micro": QEMU's micro version (json-int)
1918 - "package": package's version (json-string)
1919
1920 Example:
1921
1922 -> { "execute": "query-version" }
1923 <- {
1924       "return":{
1925          "qemu":{
1926             "major":0,
1927             "minor":11,
1928             "micro":5
1929          },
1930          "package":""
1931       }
1932    }
1933
1934 EQMP
1935
1936     {
1937         .name       = "query-version",
1938         .args_type  = "",
1939         .mhandler.cmd_new = qmp_marshal_input_query_version,
1940     },
1941
1942 SQMP
1943 query-commands
1944 --------------
1945
1946 List QMP available commands.
1947
1948 Each command is represented by a json-object, the returned value is a json-array
1949 of all commands.
1950
1951 Each json-object contain:
1952
1953 - "name": command's name (json-string)
1954
1955 Example:
1956
1957 -> { "execute": "query-commands" }
1958 <- {
1959       "return":[
1960          {
1961             "name":"query-balloon"
1962          },
1963          {
1964             "name":"system_powerdown"
1965          }
1966       ]
1967    }
1968
1969 Note: This example has been shortened as the real response is too long.
1970
1971 EQMP
1972
1973     {
1974         .name       = "query-commands",
1975         .args_type  = "",
1976         .mhandler.cmd_new = qmp_marshal_input_query_commands,
1977     },
1978
1979 SQMP
1980 query-events
1981 --------------
1982
1983 List QMP available events.
1984
1985 Each event is represented by a json-object, the returned value is a json-array
1986 of all events.
1987
1988 Each json-object contains:
1989
1990 - "name": event's name (json-string)
1991
1992 Example:
1993
1994 -> { "execute": "query-events" }
1995 <- {
1996       "return":[
1997          {
1998             "name":"SHUTDOWN"
1999          },
2000          {
2001             "name":"RESET"
2002          }
2003       ]
2004    }
2005
2006 Note: This example has been shortened as the real response is too long.
2007
2008 EQMP
2009
2010     {
2011         .name       = "query-events",
2012         .args_type  = "",
2013         .mhandler.cmd_new = qmp_marshal_input_query_events,
2014     },
2015
2016 SQMP
2017 query-chardev
2018 -------------
2019
2020 Each device is represented by a json-object. The returned value is a json-array
2021 of all devices.
2022
2023 Each json-object contain the following:
2024
2025 - "label": device's label (json-string)
2026 - "filename": device's file (json-string)
2027 - "frontend-open": open/closed state of the frontend device attached to this
2028                    backend (json-bool)
2029
2030 Example:
2031
2032 -> { "execute": "query-chardev" }
2033 <- {
2034       "return": [
2035          {
2036             "label": "charchannel0",
2037             "filename": "unix:/var/lib/libvirt/qemu/seabios.rhel6.agent,server",
2038             "frontend-open": false
2039          },
2040          {
2041             "label": "charmonitor",
2042             "filename": "unix:/var/lib/libvirt/qemu/seabios.rhel6.monitor,server",
2043             "frontend-open": true
2044          },
2045          {
2046             "label": "charserial0",
2047             "filename": "pty:/dev/pts/2",
2048             "frontend-open": true
2049          }
2050       ]
2051    }
2052
2053 EQMP
2054
2055     {
2056         .name       = "query-chardev",
2057         .args_type  = "",
2058         .mhandler.cmd_new = qmp_marshal_input_query_chardev,
2059     },
2060
2061 SQMP
2062 query-chardev-backends
2063 -------------
2064
2065 List available character device backends.
2066
2067 Each backend is represented by a json-object, the returned value is a json-array
2068 of all backends.
2069
2070 Each json-object contains:
2071
2072 - "name": backend name (json-string)
2073
2074 Example:
2075
2076 -> { "execute": "query-chardev-backends" }
2077 <- {
2078       "return":[
2079          {
2080             "name":"udp"
2081          },
2082          {
2083             "name":"tcp"
2084          },
2085          {
2086             "name":"unix"
2087          },
2088          {
2089             "name":"spiceport"
2090          }
2091       ]
2092    }
2093
2094 EQMP
2095
2096     {
2097         .name       = "query-chardev-backends",
2098         .args_type  = "",
2099         .mhandler.cmd_new = qmp_marshal_input_query_chardev_backends,
2100     },
2101
2102 SQMP
2103 query-block
2104 -----------
2105
2106 Show the block devices.
2107
2108 Each block device information is stored in a json-object and the returned value
2109 is a json-array of all devices.
2110
2111 Each json-object contain the following:
2112
2113 - "device": device name (json-string)
2114 - "type": device type (json-string)
2115          - deprecated, retained for backward compatibility
2116          - Possible values: "unknown"
2117 - "removable": true if the device is removable, false otherwise (json-bool)
2118 - "locked": true if the device is locked, false otherwise (json-bool)
2119 - "tray_open": only present if removable, true if the device has a tray,
2120                and it is open (json-bool)
2121 - "inserted": only present if the device is inserted, it is a json-object
2122    containing the following:
2123          - "file": device file name (json-string)
2124          - "ro": true if read-only, false otherwise (json-bool)
2125          - "drv": driver format name (json-string)
2126              - Possible values: "blkdebug", "bochs", "cloop", "dmg",
2127                                 "file", "file", "ftp", "ftps", "host_cdrom",
2128                                 "host_device", "host_floppy", "http", "https",
2129                                 "nbd", "parallels", "qcow", "qcow2", "raw",
2130                                 "tftp", "vdi", "vmdk", "vpc", "vvfat"
2131          - "backing_file": backing file name (json-string, optional)
2132          - "backing_file_depth": number of files in the backing file chain (json-int)
2133          - "encrypted": true if encrypted, false otherwise (json-bool)
2134          - "bps": limit total bytes per second (json-int)
2135          - "bps_rd": limit read bytes per second (json-int)
2136          - "bps_wr": limit write bytes per second (json-int)
2137          - "iops": limit total I/O operations per second (json-int)
2138          - "iops_rd": limit read operations per second (json-int)
2139          - "iops_wr": limit write operations per second (json-int)
2140          - "bps_max":  total max in bytes (json-int)
2141          - "bps_rd_max":  read max in bytes (json-int)
2142          - "bps_wr_max":  write max in bytes (json-int)
2143          - "iops_max":  total I/O operations max (json-int)
2144          - "iops_rd_max":  read I/O operations max (json-int)
2145          - "iops_wr_max":  write I/O operations max (json-int)
2146          - "iops_size": I/O size when limiting by iops (json-int)
2147          - "detect_zeroes": detect and optimize zero writing (json-string)
2148              - Possible values: "off", "on", "unmap"
2149          - "write_threshold": write offset threshold in bytes, a event will be
2150                               emitted if crossed. Zero if disabled (json-int)
2151          - "image": the detail of the image, it is a json-object containing
2152             the following:
2153              - "filename": image file name (json-string)
2154              - "format": image format (json-string)
2155              - "virtual-size": image capacity in bytes (json-int)
2156              - "dirty-flag": true if image is not cleanly closed, not present
2157                              means clean (json-bool, optional)
2158              - "actual-size": actual size on disk in bytes of the image, not
2159                               present when image does not support thin
2160                               provision (json-int, optional)
2161              - "cluster-size": size of a cluster in bytes, not present if image
2162                                format does not support it (json-int, optional)
2163              - "encrypted": true if the image is encrypted, not present means
2164                             false or the image format does not support
2165                             encryption (json-bool, optional)
2166              - "backing_file": backing file name, not present means no backing
2167                                file is used or the image format does not
2168                                support backing file chain
2169                                (json-string, optional)
2170              - "full-backing-filename": full path of the backing file, not
2171                                         present if it equals backing_file or no
2172                                         backing file is used
2173                                         (json-string, optional)
2174              - "backing-filename-format": the format of the backing file, not
2175                                           present means unknown or no backing
2176                                           file (json-string, optional)
2177              - "snapshots": the internal snapshot info, it is an optional list
2178                 of json-object containing the following:
2179                  - "id": unique snapshot id (json-string)
2180                  - "name": snapshot name (json-string)
2181                  - "vm-state-size": size of the VM state in bytes (json-int)
2182                  - "date-sec": UTC date of the snapshot in seconds (json-int)
2183                  - "date-nsec": fractional part in nanoseconds to be used with
2184                                 date-sec (json-int)
2185                  - "vm-clock-sec": VM clock relative to boot in seconds
2186                                    (json-int)
2187                  - "vm-clock-nsec": fractional part in nanoseconds to be used
2188                                     with vm-clock-sec (json-int)
2189              - "backing-image": the detail of the backing image, it is an
2190                                 optional json-object only present when a
2191                                 backing image present for this image
2192
2193 - "io-status": I/O operation status, only present if the device supports it
2194                and the VM is configured to stop on errors. It's always reset
2195                to "ok" when the "cont" command is issued (json_string, optional)
2196              - Possible values: "ok", "failed", "nospace"
2197
2198 Example:
2199
2200 -> { "execute": "query-block" }
2201 <- {
2202       "return":[
2203          {
2204             "io-status": "ok",
2205             "device":"ide0-hd0",
2206             "locked":false,
2207             "removable":false,
2208             "inserted":{
2209                "ro":false,
2210                "drv":"qcow2",
2211                "encrypted":false,
2212                "file":"disks/test.qcow2",
2213                "backing_file_depth":1,
2214                "bps":1000000,
2215                "bps_rd":0,
2216                "bps_wr":0,
2217                "iops":1000000,
2218                "iops_rd":0,
2219                "iops_wr":0,
2220                "bps_max": 8000000,
2221                "bps_rd_max": 0,
2222                "bps_wr_max": 0,
2223                "iops_max": 0,
2224                "iops_rd_max": 0,
2225                "iops_wr_max": 0,
2226                "iops_size": 0,
2227                "detect_zeroes": "on",
2228                "write_threshold": 0,
2229                "image":{
2230                   "filename":"disks/test.qcow2",
2231                   "format":"qcow2",
2232                   "virtual-size":2048000,
2233                   "backing_file":"base.qcow2",
2234                   "full-backing-filename":"disks/base.qcow2",
2235                   "backing-filename-format:"qcow2",
2236                   "snapshots":[
2237                      {
2238                         "id": "1",
2239                         "name": "snapshot1",
2240                         "vm-state-size": 0,
2241                         "date-sec": 10000200,
2242                         "date-nsec": 12,
2243                         "vm-clock-sec": 206,
2244                         "vm-clock-nsec": 30
2245                      }
2246                   ],
2247                   "backing-image":{
2248                       "filename":"disks/base.qcow2",
2249                       "format":"qcow2",
2250                       "virtual-size":2048000
2251                   }
2252                }
2253             },
2254             "type":"unknown"
2255          },
2256          {
2257             "io-status": "ok",
2258             "device":"ide1-cd0",
2259             "locked":false,
2260             "removable":true,
2261             "type":"unknown"
2262          },
2263          {
2264             "device":"floppy0",
2265             "locked":false,
2266             "removable":true,
2267             "type":"unknown"
2268          },
2269          {
2270             "device":"sd0",
2271             "locked":false,
2272             "removable":true,
2273             "type":"unknown"
2274          }
2275       ]
2276    }
2277
2278 EQMP
2279
2280     {
2281         .name       = "query-block",
2282         .args_type  = "",
2283         .mhandler.cmd_new = qmp_marshal_input_query_block,
2284     },
2285
2286 SQMP
2287 query-blockstats
2288 ----------------
2289
2290 Show block device statistics.
2291
2292 Each device statistic information is stored in a json-object and the returned
2293 value is a json-array of all devices.
2294
2295 Each json-object contain the following:
2296
2297 - "device": device name (json-string)
2298 - "stats": A json-object with the statistics information, it contains:
2299     - "rd_bytes": bytes read (json-int)
2300     - "wr_bytes": bytes written (json-int)
2301     - "rd_operations": read operations (json-int)
2302     - "wr_operations": write operations (json-int)
2303     - "flush_operations": cache flush operations (json-int)
2304     - "wr_total_time_ns": total time spend on writes in nano-seconds (json-int)
2305     - "rd_total_time_ns": total time spend on reads in nano-seconds (json-int)
2306     - "flush_total_time_ns": total time spend on cache flushes in nano-seconds (json-int)
2307     - "wr_highest_offset": Highest offset of a sector written since the
2308                            BlockDriverState has been opened (json-int)
2309     - "rd_merged": number of read requests that have been merged into
2310                    another request (json-int)
2311     - "wr_merged": number of write requests that have been merged into
2312                    another request (json-int)
2313 - "parent": Contains recursively the statistics of the underlying
2314             protocol (e.g. the host file for a qcow2 image). If there is
2315             no underlying protocol, this field is omitted
2316             (json-object, optional)
2317
2318 Example:
2319
2320 -> { "execute": "query-blockstats" }
2321 <- {
2322       "return":[
2323          {
2324             "device":"ide0-hd0",
2325             "parent":{
2326                "stats":{
2327                   "wr_highest_offset":3686448128,
2328                   "wr_bytes":9786368,
2329                   "wr_operations":751,
2330                   "rd_bytes":122567168,
2331                   "rd_operations":36772
2332                   "wr_total_times_ns":313253456
2333                   "rd_total_times_ns":3465673657
2334                   "flush_total_times_ns":49653
2335                   "flush_operations":61,
2336                   "rd_merged":0,
2337                   "wr_merged":0
2338                }
2339             },
2340             "stats":{
2341                "wr_highest_offset":2821110784,
2342                "wr_bytes":9786368,
2343                "wr_operations":692,
2344                "rd_bytes":122739200,
2345                "rd_operations":36604
2346                "flush_operations":51,
2347                "wr_total_times_ns":313253456
2348                "rd_total_times_ns":3465673657
2349                "flush_total_times_ns":49653,
2350                "rd_merged":0,
2351                "wr_merged":0
2352             }
2353          },
2354          {
2355             "device":"ide1-cd0",
2356             "stats":{
2357                "wr_highest_offset":0,
2358                "wr_bytes":0,
2359                "wr_operations":0,
2360                "rd_bytes":0,
2361                "rd_operations":0
2362                "flush_operations":0,
2363                "wr_total_times_ns":0
2364                "rd_total_times_ns":0
2365                "flush_total_times_ns":0,
2366                "rd_merged":0,
2367                "wr_merged":0
2368             }
2369          },
2370          {
2371             "device":"floppy0",
2372             "stats":{
2373                "wr_highest_offset":0,
2374                "wr_bytes":0,
2375                "wr_operations":0,
2376                "rd_bytes":0,
2377                "rd_operations":0
2378                "flush_operations":0,
2379                "wr_total_times_ns":0
2380                "rd_total_times_ns":0
2381                "flush_total_times_ns":0,
2382                "rd_merged":0,
2383                "wr_merged":0
2384             }
2385          },
2386          {
2387             "device":"sd0",
2388             "stats":{
2389                "wr_highest_offset":0,
2390                "wr_bytes":0,
2391                "wr_operations":0,
2392                "rd_bytes":0,
2393                "rd_operations":0
2394                "flush_operations":0,
2395                "wr_total_times_ns":0
2396                "rd_total_times_ns":0
2397                "flush_total_times_ns":0,
2398                "rd_merged":0,
2399                "wr_merged":0
2400             }
2401          }
2402       ]
2403    }
2404
2405 EQMP
2406
2407     {
2408         .name       = "query-blockstats",
2409         .args_type  = "query-nodes:b?",
2410         .mhandler.cmd_new = qmp_marshal_input_query_blockstats,
2411     },
2412
2413 SQMP
2414 query-cpus
2415 ----------
2416
2417 Show CPU information.
2418
2419 Return a json-array. Each CPU is represented by a json-object, which contains:
2420
2421 - "CPU": CPU index (json-int)
2422 - "current": true if this is the current CPU, false otherwise (json-bool)
2423 - "halted": true if the cpu is halted, false otherwise (json-bool)
2424 - Current program counter. The key's name depends on the architecture:
2425      "pc": i386/x86_64 (json-int)
2426      "nip": PPC (json-int)
2427      "pc" and "npc": sparc (json-int)
2428      "PC": mips (json-int)
2429 - "thread_id": ID of the underlying host thread (json-int)
2430
2431 Example:
2432
2433 -> { "execute": "query-cpus" }
2434 <- {
2435       "return":[
2436          {
2437             "CPU":0,
2438             "current":true,
2439             "halted":false,
2440             "pc":3227107138
2441             "thread_id":3134
2442          },
2443          {
2444             "CPU":1,
2445             "current":false,
2446             "halted":true,
2447             "pc":7108165
2448             "thread_id":3135
2449          }
2450       ]
2451    }
2452
2453 EQMP
2454
2455     {
2456         .name       = "query-cpus",
2457         .args_type  = "",
2458         .mhandler.cmd_new = qmp_marshal_input_query_cpus,
2459     },
2460
2461 SQMP
2462 query-iothreads
2463 ---------------
2464
2465 Returns a list of information about each iothread.
2466
2467 Note this list excludes the QEMU main loop thread, which is not declared
2468 using the -object iothread command-line option.  It is always the main thread
2469 of the process.
2470
2471 Return a json-array. Each iothread is represented by a json-object, which contains:
2472
2473 - "id": name of iothread (json-str)
2474 - "thread-id": ID of the underlying host thread (json-int)
2475
2476 Example:
2477
2478 -> { "execute": "query-iothreads" }
2479 <- {
2480       "return":[
2481          {
2482             "id":"iothread0",
2483             "thread-id":3134
2484          },
2485          {
2486             "id":"iothread1",
2487             "thread-id":3135
2488          }
2489       ]
2490    }
2491
2492 EQMP
2493
2494     {
2495         .name       = "query-iothreads",
2496         .args_type  = "",
2497         .mhandler.cmd_new = qmp_marshal_input_query_iothreads,
2498     },
2499
2500 SQMP
2501 query-pci
2502 ---------
2503
2504 PCI buses and devices information.
2505
2506 The returned value is a json-array of all buses. Each bus is represented by
2507 a json-object, which has a key with a json-array of all PCI devices attached
2508 to it. Each device is represented by a json-object.
2509
2510 The bus json-object contains the following:
2511
2512 - "bus": bus number (json-int)
2513 - "devices": a json-array of json-objects, each json-object represents a
2514              PCI device
2515
2516 The PCI device json-object contains the following:
2517
2518 - "bus": identical to the parent's bus number (json-int)
2519 - "slot": slot number (json-int)
2520 - "function": function number (json-int)
2521 - "class_info": a json-object containing:
2522      - "desc": device class description (json-string, optional)
2523      - "class": device class number (json-int)
2524 - "id": a json-object containing:
2525      - "device": device ID (json-int)
2526      - "vendor": vendor ID (json-int)
2527 - "irq": device's IRQ if assigned (json-int, optional)
2528 - "qdev_id": qdev id string (json-string)
2529 - "pci_bridge": It's a json-object, only present if this device is a
2530                 PCI bridge, contains:
2531      - "bus": bus number (json-int)
2532      - "secondary": secondary bus number (json-int)
2533      - "subordinate": subordinate bus number (json-int)
2534      - "io_range": I/O memory range information, a json-object with the
2535                    following members:
2536                  - "base": base address, in bytes (json-int)
2537                  - "limit": limit address, in bytes (json-int)
2538      - "memory_range": memory range information, a json-object with the
2539                        following members:
2540                  - "base": base address, in bytes (json-int)
2541                  - "limit": limit address, in bytes (json-int)
2542      - "prefetchable_range": Prefetchable memory range information, a
2543                              json-object with the following members:
2544                  - "base": base address, in bytes (json-int)
2545                  - "limit": limit address, in bytes (json-int)
2546      - "devices": a json-array of PCI devices if there's any attached, each
2547                   each element is represented by a json-object, which contains
2548                   the same members of the 'PCI device json-object' described
2549                   above (optional)
2550 - "regions": a json-array of json-objects, each json-object represents a
2551              memory region of this device
2552
2553 The memory range json-object contains the following:
2554
2555 - "base": base memory address (json-int)
2556 - "limit": limit value (json-int)
2557
2558 The region json-object can be an I/O region or a memory region, an I/O region
2559 json-object contains the following:
2560
2561 - "type": "io" (json-string, fixed)
2562 - "bar": BAR number (json-int)
2563 - "address": memory address (json-int)
2564 - "size": memory size (json-int)
2565
2566 A memory region json-object contains the following:
2567
2568 - "type": "memory" (json-string, fixed)
2569 - "bar": BAR number (json-int)
2570 - "address": memory address (json-int)
2571 - "size": memory size (json-int)
2572 - "mem_type_64": true or false (json-bool)
2573 - "prefetch": true or false (json-bool)
2574
2575 Example:
2576
2577 -> { "execute": "query-pci" }
2578 <- {
2579       "return":[
2580          {
2581             "bus":0,
2582             "devices":[
2583                {
2584                   "bus":0,
2585                   "qdev_id":"",
2586                   "slot":0,
2587                   "class_info":{
2588                      "class":1536,
2589                      "desc":"Host bridge"
2590                   },
2591                   "id":{
2592                      "device":32902,
2593                      "vendor":4663
2594                   },
2595                   "function":0,
2596                   "regions":[
2597
2598                   ]
2599                },
2600                {
2601                   "bus":0,
2602                   "qdev_id":"",
2603                   "slot":1,
2604                   "class_info":{
2605                      "class":1537,
2606                      "desc":"ISA bridge"
2607                   },
2608                   "id":{
2609                      "device":32902,
2610                      "vendor":28672
2611                   },
2612                   "function":0,
2613                   "regions":[
2614
2615                   ]
2616                },
2617                {
2618                   "bus":0,
2619                   "qdev_id":"",
2620                   "slot":1,
2621                   "class_info":{
2622                      "class":257,
2623                      "desc":"IDE controller"
2624                   },
2625                   "id":{
2626                      "device":32902,
2627                      "vendor":28688
2628                   },
2629                   "function":1,
2630                   "regions":[
2631                      {
2632                         "bar":4,
2633                         "size":16,
2634                         "address":49152,
2635                         "type":"io"
2636                      }
2637                   ]
2638                },
2639                {
2640                   "bus":0,
2641                   "qdev_id":"",
2642                   "slot":2,
2643                   "class_info":{
2644                      "class":768,
2645                      "desc":"VGA controller"
2646                   },
2647                   "id":{
2648                      "device":4115,
2649                      "vendor":184
2650                   },
2651                   "function":0,
2652                   "regions":[
2653                      {
2654                         "prefetch":true,
2655                         "mem_type_64":false,
2656                         "bar":0,
2657                         "size":33554432,
2658                         "address":4026531840,
2659                         "type":"memory"
2660                      },
2661                      {
2662                         "prefetch":false,
2663                         "mem_type_64":false,
2664                         "bar":1,
2665                         "size":4096,
2666                         "address":4060086272,
2667                         "type":"memory"
2668                      },
2669                      {
2670                         "prefetch":false,
2671                         "mem_type_64":false,
2672                         "bar":6,
2673                         "size":65536,
2674                         "address":-1,
2675                         "type":"memory"
2676                      }
2677                   ]
2678                },
2679                {
2680                   "bus":0,
2681                   "qdev_id":"",
2682                   "irq":11,
2683                   "slot":4,
2684                   "class_info":{
2685                      "class":1280,
2686                      "desc":"RAM controller"
2687                   },
2688                   "id":{
2689                      "device":6900,
2690                      "vendor":4098
2691                   },
2692                   "function":0,
2693                   "regions":[
2694                      {
2695                         "bar":0,
2696                         "size":32,
2697                         "address":49280,
2698                         "type":"io"
2699                      }
2700                   ]
2701                }
2702             ]
2703          }
2704       ]
2705    }
2706
2707 Note: This example has been shortened as the real response is too long.
2708
2709 EQMP
2710
2711     {
2712         .name       = "query-pci",
2713         .args_type  = "",
2714         .mhandler.cmd_new = qmp_marshal_input_query_pci,
2715     },
2716
2717 SQMP
2718 query-kvm
2719 ---------
2720
2721 Show KVM information.
2722
2723 Return a json-object with the following information:
2724
2725 - "enabled": true if KVM support is enabled, false otherwise (json-bool)
2726 - "present": true if QEMU has KVM support, false otherwise (json-bool)
2727
2728 Example:
2729
2730 -> { "execute": "query-kvm" }
2731 <- { "return": { "enabled": true, "present": true } }
2732
2733 EQMP
2734
2735     {
2736         .name       = "query-kvm",
2737         .args_type  = "",
2738         .mhandler.cmd_new = qmp_marshal_input_query_kvm,
2739     },
2740
2741 SQMP
2742 query-status
2743 ------------
2744
2745 Return a json-object with the following information:
2746
2747 - "running": true if the VM is running, or false if it is paused (json-bool)
2748 - "singlestep": true if the VM is in single step mode,
2749                 false otherwise (json-bool)
2750 - "status": one of the following values (json-string)
2751     "debug" - QEMU is running on a debugger
2752     "inmigrate" - guest is paused waiting for an incoming migration
2753     "internal-error" - An internal error that prevents further guest
2754     execution has occurred
2755     "io-error" - the last IOP has failed and the device is configured
2756     to pause on I/O errors
2757     "paused" - guest has been paused via the 'stop' command
2758     "postmigrate" - guest is paused following a successful 'migrate'
2759     "prelaunch" - QEMU was started with -S and guest has not started
2760     "finish-migrate" - guest is paused to finish the migration process
2761     "restore-vm" - guest is paused to restore VM state
2762     "running" - guest is actively running
2763     "save-vm" - guest is paused to save the VM state
2764     "shutdown" - guest is shut down (and -no-shutdown is in use)
2765     "watchdog" - the watchdog action is configured to pause and
2766      has been triggered
2767
2768 Example:
2769
2770 -> { "execute": "query-status" }
2771 <- { "return": { "running": true, "singlestep": false, "status": "running" } }
2772
2773 EQMP
2774
2775     {
2776         .name       = "query-status",
2777         .args_type  = "",
2778         .mhandler.cmd_new = qmp_marshal_input_query_status,
2779     },
2780
2781 SQMP
2782 query-mice
2783 ----------
2784
2785 Show VM mice information.
2786
2787 Each mouse is represented by a json-object, the returned value is a json-array
2788 of all mice.
2789
2790 The mouse json-object contains the following:
2791
2792 - "name": mouse's name (json-string)
2793 - "index": mouse's index (json-int)
2794 - "current": true if this mouse is receiving events, false otherwise (json-bool)
2795 - "absolute": true if the mouse generates absolute input events (json-bool)
2796
2797 Example:
2798
2799 -> { "execute": "query-mice" }
2800 <- {
2801       "return":[
2802          {
2803             "name":"QEMU Microsoft Mouse",
2804             "index":0,
2805             "current":false,
2806             "absolute":false
2807          },
2808          {
2809             "name":"QEMU PS/2 Mouse",
2810             "index":1,
2811             "current":true,
2812             "absolute":true
2813          }
2814       ]
2815    }
2816
2817 EQMP
2818
2819     {
2820         .name       = "query-mice",
2821         .args_type  = "",
2822         .mhandler.cmd_new = qmp_marshal_input_query_mice,
2823     },
2824
2825 SQMP
2826 query-vnc
2827 ---------
2828
2829 Show VNC server information.
2830
2831 Return a json-object with server information. Connected clients are returned
2832 as a json-array of json-objects.
2833
2834 The main json-object contains the following:
2835
2836 - "enabled": true or false (json-bool)
2837 - "host": server's IP address (json-string)
2838 - "family": address family (json-string)
2839          - Possible values: "ipv4", "ipv6", "unix", "unknown"
2840 - "service": server's port number (json-string)
2841 - "auth": authentication method (json-string)
2842          - Possible values: "invalid", "none", "ra2", "ra2ne", "sasl", "tight",
2843                             "tls", "ultra", "unknown", "vencrypt", "vencrypt",
2844                             "vencrypt+plain", "vencrypt+tls+none",
2845                             "vencrypt+tls+plain", "vencrypt+tls+sasl",
2846                             "vencrypt+tls+vnc", "vencrypt+x509+none",
2847                             "vencrypt+x509+plain", "vencrypt+x509+sasl",
2848                             "vencrypt+x509+vnc", "vnc"
2849 - "clients": a json-array of all connected clients
2850
2851 Clients are described by a json-object, each one contain the following:
2852
2853 - "host": client's IP address (json-string)
2854 - "family": address family (json-string)
2855          - Possible values: "ipv4", "ipv6", "unix", "unknown"
2856 - "service": client's port number (json-string)
2857 - "x509_dname": TLS dname (json-string, optional)
2858 - "sasl_username": SASL username (json-string, optional)
2859
2860 Example:
2861
2862 -> { "execute": "query-vnc" }
2863 <- {
2864       "return":{
2865          "enabled":true,
2866          "host":"0.0.0.0",
2867          "service":"50402",
2868          "auth":"vnc",
2869          "family":"ipv4",
2870          "clients":[
2871             {
2872                "host":"127.0.0.1",
2873                "service":"50401",
2874                "family":"ipv4"
2875             }
2876          ]
2877       }
2878    }
2879
2880 EQMP
2881
2882     {
2883         .name       = "query-vnc",
2884         .args_type  = "",
2885         .mhandler.cmd_new = qmp_marshal_input_query_vnc,
2886     },
2887     {
2888         .name       = "query-vnc-servers",
2889         .args_type  = "",
2890         .mhandler.cmd_new = qmp_marshal_input_query_vnc_servers,
2891     },
2892
2893 SQMP
2894 query-spice
2895 -----------
2896
2897 Show SPICE server information.
2898
2899 Return a json-object with server information. Connected clients are returned
2900 as a json-array of json-objects.
2901
2902 The main json-object contains the following:
2903
2904 - "enabled": true or false (json-bool)
2905 - "host": server's IP address (json-string)
2906 - "port": server's port number (json-int, optional)
2907 - "tls-port": server's port number (json-int, optional)
2908 - "auth": authentication method (json-string)
2909          - Possible values: "none", "spice"
2910 - "channels": a json-array of all active channels clients
2911
2912 Channels are described by a json-object, each one contain the following:
2913
2914 - "host": client's IP address (json-string)
2915 - "family": address family (json-string)
2916          - Possible values: "ipv4", "ipv6", "unix", "unknown"
2917 - "port": client's port number (json-string)
2918 - "connection-id": spice connection id.  All channels with the same id
2919                    belong to the same spice session (json-int)
2920 - "channel-type": channel type.  "1" is the main control channel, filter for
2921                   this one if you want track spice sessions only (json-int)
2922 - "channel-id": channel id.  Usually "0", might be different needed when
2923                 multiple channels of the same type exist, such as multiple
2924                 display channels in a multihead setup (json-int)
2925 - "tls": whether the channel is encrypted (json-bool)
2926
2927 Example:
2928
2929 -> { "execute": "query-spice" }
2930 <- {
2931       "return": {
2932          "enabled": true,
2933          "auth": "spice",
2934          "port": 5920,
2935          "tls-port": 5921,
2936          "host": "0.0.0.0",
2937          "channels": [
2938             {
2939                "port": "54924",
2940                "family": "ipv4",
2941                "channel-type": 1,
2942                "connection-id": 1804289383,
2943                "host": "127.0.0.1",
2944                "channel-id": 0,
2945                "tls": true
2946             },
2947             {
2948                "port": "36710",
2949                "family": "ipv4",
2950                "channel-type": 4,
2951                "connection-id": 1804289383,
2952                "host": "127.0.0.1",
2953                "channel-id": 0,
2954                "tls": false
2955             },
2956             [ ... more channels follow ... ]
2957          ]
2958       }
2959    }
2960
2961 EQMP
2962
2963 #if defined(CONFIG_SPICE)
2964     {
2965         .name       = "query-spice",
2966         .args_type  = "",
2967         .mhandler.cmd_new = qmp_marshal_input_query_spice,
2968     },
2969 #endif
2970
2971 SQMP
2972 query-name
2973 ----------
2974
2975 Show VM name.
2976
2977 Return a json-object with the following information:
2978
2979 - "name": VM's name (json-string, optional)
2980
2981 Example:
2982
2983 -> { "execute": "query-name" }
2984 <- { "return": { "name": "qemu-name" } }
2985
2986 EQMP
2987
2988     {
2989         .name       = "query-name",
2990         .args_type  = "",
2991         .mhandler.cmd_new = qmp_marshal_input_query_name,
2992     },
2993
2994 SQMP
2995 query-uuid
2996 ----------
2997
2998 Show VM UUID.
2999
3000 Return a json-object with the following information:
3001
3002 - "UUID": Universally Unique Identifier (json-string)
3003
3004 Example:
3005
3006 -> { "execute": "query-uuid" }
3007 <- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } }
3008
3009 EQMP
3010
3011     {
3012         .name       = "query-uuid",
3013         .args_type  = "",
3014         .mhandler.cmd_new = qmp_marshal_input_query_uuid,
3015     },
3016
3017 SQMP
3018 query-command-line-options
3019 --------------------------
3020
3021 Show command line option schema.
3022
3023 Return a json-array of command line option schema for all options (or for
3024 the given option), returning an error if the given option doesn't exist.
3025
3026 Each array entry contains the following:
3027
3028 - "option": option name (json-string)
3029 - "parameters": a json-array describes all parameters of the option:
3030     - "name": parameter name (json-string)
3031     - "type": parameter type (one of 'string', 'boolean', 'number',
3032               or 'size')
3033     - "help": human readable description of the parameter
3034               (json-string, optional)
3035     - "default": default value string for the parameter
3036                  (json-string, optional)
3037
3038 Example:
3039
3040 -> { "execute": "query-command-line-options", "arguments": { "option": "option-rom" } }
3041 <- { "return": [
3042         {
3043             "parameters": [
3044                 {
3045                     "name": "romfile",
3046                     "type": "string"
3047                 },
3048                 {
3049                     "name": "bootindex",
3050                     "type": "number"
3051                 }
3052             ],
3053             "option": "option-rom"
3054         }
3055      ]
3056    }
3057
3058 EQMP
3059
3060     {
3061         .name       = "query-command-line-options",
3062         .args_type  = "option:s?",
3063         .mhandler.cmd_new = qmp_marshal_input_query_command_line_options,
3064     },
3065
3066 SQMP
3067 query-migrate
3068 -------------
3069
3070 Migration status.
3071
3072 Return a json-object. If migration is active there will be another json-object
3073 with RAM migration status and if block migration is active another one with
3074 block migration status.
3075
3076 The main json-object contains the following:
3077
3078 - "status": migration status (json-string)
3079      - Possible values: "setup", "active", "completed", "failed", "cancelled"
3080 - "total-time": total amount of ms since migration started.  If
3081                 migration has ended, it returns the total migration
3082                 time (json-int)
3083 - "setup-time" amount of setup time in milliseconds _before_ the
3084                iterations begin but _after_ the QMP command is issued.
3085                This is designed to provide an accounting of any activities
3086                (such as RDMA pinning) which may be expensive, but do not
3087                actually occur during the iterative migration rounds
3088                themselves. (json-int)
3089 - "downtime": only present when migration has finished correctly
3090               total amount in ms for downtime that happened (json-int)
3091 - "expected-downtime": only present while migration is active
3092                 total amount in ms for downtime that was calculated on
3093                 the last bitmap round (json-int)
3094 - "ram": only present if "status" is "active", it is a json-object with the
3095   following RAM information:
3096          - "transferred": amount transferred in bytes (json-int)
3097          - "remaining": amount remaining to transfer in bytes (json-int)
3098          - "total": total amount of memory in bytes (json-int)
3099          - "duplicate": number of pages filled entirely with the same
3100             byte (json-int)
3101             These are sent over the wire much more efficiently.
3102          - "skipped": number of skipped zero pages (json-int)
3103          - "normal" : number of whole pages transferred.  I.e. they
3104             were not sent as duplicate or xbzrle pages (json-int)
3105          - "normal-bytes" : number of bytes transferred in whole
3106             pages. This is just normal pages times size of one page,
3107             but this way upper levels don't need to care about page
3108             size (json-int)
3109          - "dirty-sync-count": times that dirty ram was synchronized (json-int)
3110 - "disk": only present if "status" is "active" and it is a block migration,
3111   it is a json-object with the following disk information:
3112          - "transferred": amount transferred in bytes (json-int)
3113          - "remaining": amount remaining to transfer in bytes json-int)
3114          - "total": total disk size in bytes (json-int)
3115 - "xbzrle-cache": only present if XBZRLE is active.
3116   It is a json-object with the following XBZRLE information:
3117          - "cache-size": XBZRLE cache size in bytes
3118          - "bytes": number of bytes transferred for XBZRLE compressed pages
3119          - "pages": number of XBZRLE compressed pages
3120          - "cache-miss": number of XBRZRLE page cache misses
3121          - "cache-miss-rate": rate of XBRZRLE page cache misses
3122          - "overflow": number of times XBZRLE overflows.  This means
3123            that the XBZRLE encoding was bigger than just sent the
3124            whole page, and then we sent the whole page instead (as as
3125            normal page).
3126
3127 Examples:
3128
3129 1. Before the first migration
3130
3131 -> { "execute": "query-migrate" }
3132 <- { "return": {} }
3133
3134 2. Migration is done and has succeeded
3135
3136 -> { "execute": "query-migrate" }
3137 <- { "return": {
3138         "status": "completed",
3139         "ram":{
3140           "transferred":123,
3141           "remaining":123,
3142           "total":246,
3143           "total-time":12345,
3144           "setup-time":12345,
3145           "downtime":12345,
3146           "duplicate":123,
3147           "normal":123,
3148           "normal-bytes":123456,
3149           "dirty-sync-count":15
3150         }
3151      }
3152    }
3153
3154 3. Migration is done and has failed
3155
3156 -> { "execute": "query-migrate" }
3157 <- { "return": { "status": "failed" } }
3158
3159 4. Migration is being performed and is not a block migration:
3160
3161 -> { "execute": "query-migrate" }
3162 <- {
3163       "return":{
3164          "status":"active",
3165          "ram":{
3166             "transferred":123,
3167             "remaining":123,
3168             "total":246,
3169             "total-time":12345,
3170             "setup-time":12345,
3171             "expected-downtime":12345,
3172             "duplicate":123,
3173             "normal":123,
3174             "normal-bytes":123456,
3175             "dirty-sync-count":15
3176          }
3177       }
3178    }
3179
3180 5. Migration is being performed and is a block migration:
3181
3182 -> { "execute": "query-migrate" }
3183 <- {
3184       "return":{
3185          "status":"active",
3186          "ram":{
3187             "total":1057024,
3188             "remaining":1053304,
3189             "transferred":3720,
3190             "total-time":12345,
3191             "setup-time":12345,
3192             "expected-downtime":12345,
3193             "duplicate":123,
3194             "normal":123,
3195             "normal-bytes":123456,
3196             "dirty-sync-count":15
3197          },
3198          "disk":{
3199             "total":20971520,
3200             "remaining":20880384,
3201             "transferred":91136
3202          }
3203       }
3204    }
3205
3206 6. Migration is being performed and XBZRLE is active:
3207
3208 -> { "execute": "query-migrate" }
3209 <- {
3210       "return":{
3211          "status":"active",
3212          "capabilities" : [ { "capability": "xbzrle", "state" : true } ],
3213          "ram":{
3214             "total":1057024,
3215             "remaining":1053304,
3216             "transferred":3720,
3217             "total-time":12345,
3218             "setup-time":12345,
3219             "expected-downtime":12345,
3220             "duplicate":10,
3221             "normal":3333,
3222             "normal-bytes":3412992,
3223             "dirty-sync-count":15
3224          },
3225          "xbzrle-cache":{
3226             "cache-size":67108864,
3227             "bytes":20971520,
3228             "pages":2444343,
3229             "cache-miss":2244,
3230             "cache-miss-rate":0.123,
3231             "overflow":34434
3232          }
3233       }
3234    }
3235
3236 EQMP
3237
3238     {
3239         .name       = "query-migrate",
3240         .args_type  = "",
3241         .mhandler.cmd_new = qmp_marshal_input_query_migrate,
3242     },
3243
3244 SQMP
3245 migrate-set-capabilities
3246 ------------------------
3247
3248 Enable/Disable migration capabilities
3249
3250 - "xbzrle": XBZRLE support
3251 - "rdma-pin-all": pin all pages when using RDMA during migration
3252 - "auto-converge": throttle down guest to help convergence of migration
3253 - "zero-blocks": compress zero blocks during block migration
3254
3255 Arguments:
3256
3257 Example:
3258
3259 -> { "execute": "migrate-set-capabilities" , "arguments":
3260      { "capabilities": [ { "capability": "xbzrle", "state": true } ] } }
3261
3262 EQMP
3263
3264     {
3265         .name       = "migrate-set-capabilities",
3266         .args_type  = "capabilities:O",
3267         .params     = "capability:s,state:b",
3268         .mhandler.cmd_new = qmp_marshal_input_migrate_set_capabilities,
3269     },
3270 SQMP
3271 query-migrate-capabilities
3272 --------------------------
3273
3274 Query current migration capabilities
3275
3276 - "capabilities": migration capabilities state
3277          - "xbzrle" : XBZRLE state (json-bool)
3278          - "rdma-pin-all" : RDMA Pin Page state (json-bool)
3279          - "auto-converge" : Auto Converge state (json-bool)
3280          - "zero-blocks" : Zero Blocks state (json-bool)
3281
3282 Arguments:
3283
3284 Example:
3285
3286 -> { "execute": "query-migrate-capabilities" }
3287 <- { "return": [ { "state": false, "capability": "xbzrle" } ] }
3288
3289 EQMP
3290
3291     {
3292         .name       = "query-migrate-capabilities",
3293         .args_type  = "",
3294         .mhandler.cmd_new = qmp_marshal_input_query_migrate_capabilities,
3295     },
3296
3297 SQMP
3298 query-balloon
3299 -------------
3300
3301 Show balloon information.
3302
3303 Make an asynchronous request for balloon info. When the request completes a
3304 json-object will be returned containing the following data:
3305
3306 - "actual": current balloon value in bytes (json-int)
3307
3308 Example:
3309
3310 -> { "execute": "query-balloon" }
3311 <- {
3312       "return":{
3313          "actual":1073741824,
3314       }
3315    }
3316
3317 EQMP
3318
3319     {
3320         .name       = "query-balloon",
3321         .args_type  = "",
3322         .mhandler.cmd_new = qmp_marshal_input_query_balloon,
3323     },
3324
3325     {
3326         .name       = "query-block-jobs",
3327         .args_type  = "",
3328         .mhandler.cmd_new = qmp_marshal_input_query_block_jobs,
3329     },
3330
3331     {
3332         .name       = "qom-list",
3333         .args_type  = "path:s",
3334         .mhandler.cmd_new = qmp_marshal_input_qom_list,
3335     },
3336
3337     {
3338         .name       = "qom-set",
3339         .args_type  = "path:s,property:s,value:q",
3340         .mhandler.cmd_new = qmp_qom_set,
3341     },
3342
3343     {
3344         .name       = "qom-get",
3345         .args_type  = "path:s,property:s",
3346         .mhandler.cmd_new = qmp_qom_get,
3347     },
3348
3349     {
3350         .name       = "nbd-server-start",
3351         .args_type  = "addr:q",
3352         .mhandler.cmd_new = qmp_marshal_input_nbd_server_start,
3353     },
3354     {
3355         .name       = "nbd-server-add",
3356         .args_type  = "device:B,writable:b?",
3357         .mhandler.cmd_new = qmp_marshal_input_nbd_server_add,
3358     },
3359     {
3360         .name       = "nbd-server-stop",
3361         .args_type  = "",
3362         .mhandler.cmd_new = qmp_marshal_input_nbd_server_stop,
3363     },
3364
3365     {
3366         .name       = "change-vnc-password",
3367         .args_type  = "password:s",
3368         .mhandler.cmd_new = qmp_marshal_input_change_vnc_password,
3369     },
3370     {
3371         .name       = "qom-list-types",
3372         .args_type  = "implements:s?,abstract:b?",
3373         .mhandler.cmd_new = qmp_marshal_input_qom_list_types,
3374     },
3375
3376     {
3377         .name       = "device-list-properties",
3378         .args_type  = "typename:s",
3379         .mhandler.cmd_new = qmp_marshal_input_device_list_properties,
3380     },
3381
3382     {
3383         .name       = "query-machines",
3384         .args_type  = "",
3385         .mhandler.cmd_new = qmp_marshal_input_query_machines,
3386     },
3387
3388     {
3389         .name       = "query-cpu-definitions",
3390         .args_type  = "",
3391         .mhandler.cmd_new = qmp_marshal_input_query_cpu_definitions,
3392     },
3393
3394     {
3395         .name       = "query-target",
3396         .args_type  = "",
3397         .mhandler.cmd_new = qmp_marshal_input_query_target,
3398     },
3399
3400     {
3401         .name       = "query-tpm",
3402         .args_type  = "",
3403         .mhandler.cmd_new = qmp_marshal_input_query_tpm,
3404     },
3405
3406 SQMP
3407 query-tpm
3408 ---------
3409
3410 Return information about the TPM device.
3411
3412 Arguments: None
3413
3414 Example:
3415
3416 -> { "execute": "query-tpm" }
3417 <- { "return":
3418      [
3419        { "model": "tpm-tis",
3420          "options":
3421            { "type": "passthrough",
3422              "data":
3423                { "cancel-path": "/sys/class/misc/tpm0/device/cancel",
3424                  "path": "/dev/tpm0"
3425                }
3426            },
3427          "id": "tpm0"
3428        }
3429      ]
3430    }
3431
3432 EQMP
3433
3434     {
3435         .name       = "query-tpm-models",
3436         .args_type  = "",
3437         .mhandler.cmd_new = qmp_marshal_input_query_tpm_models,
3438     },
3439
3440 SQMP
3441 query-tpm-models
3442 ----------------
3443
3444 Return a list of supported TPM models.
3445
3446 Arguments: None
3447
3448 Example:
3449
3450 -> { "execute": "query-tpm-models" }
3451 <- { "return": [ "tpm-tis" ] }
3452
3453 EQMP
3454
3455     {
3456         .name       = "query-tpm-types",
3457         .args_type  = "",
3458         .mhandler.cmd_new = qmp_marshal_input_query_tpm_types,
3459     },
3460
3461 SQMP
3462 query-tpm-types
3463 ---------------
3464
3465 Return a list of supported TPM types.
3466
3467 Arguments: None
3468
3469 Example:
3470
3471 -> { "execute": "query-tpm-types" }
3472 <- { "return": [ "passthrough" ] }
3473
3474 EQMP
3475
3476     {
3477         .name       = "chardev-add",
3478         .args_type  = "id:s,backend:q",
3479         .mhandler.cmd_new = qmp_marshal_input_chardev_add,
3480     },
3481
3482 SQMP
3483 chardev-add
3484 ----------------
3485
3486 Add a chardev.
3487
3488 Arguments:
3489
3490 - "id": the chardev's ID, must be unique (json-string)
3491 - "backend": chardev backend type + parameters
3492
3493 Examples:
3494
3495 -> { "execute" : "chardev-add",
3496      "arguments" : { "id" : "foo",
3497                      "backend" : { "type" : "null", "data" : {} } } }
3498 <- { "return": {} }
3499
3500 -> { "execute" : "chardev-add",
3501      "arguments" : { "id" : "bar",
3502                      "backend" : { "type" : "file",
3503                                    "data" : { "out" : "/tmp/bar.log" } } } }
3504 <- { "return": {} }
3505
3506 -> { "execute" : "chardev-add",
3507      "arguments" : { "id" : "baz",
3508                      "backend" : { "type" : "pty", "data" : {} } } }
3509 <- { "return": { "pty" : "/dev/pty/42" } }
3510
3511 EQMP
3512
3513     {
3514         .name       = "chardev-remove",
3515         .args_type  = "id:s",
3516         .mhandler.cmd_new = qmp_marshal_input_chardev_remove,
3517     },
3518
3519
3520 SQMP
3521 chardev-remove
3522 --------------
3523
3524 Remove a chardev.
3525
3526 Arguments:
3527
3528 - "id": the chardev's ID, must exist and not be in use (json-string)
3529
3530 Example:
3531
3532 -> { "execute": "chardev-remove", "arguments": { "id" : "foo" } }
3533 <- { "return": {} }
3534
3535 EQMP
3536     {
3537         .name       = "query-rx-filter",
3538         .args_type  = "name:s?",
3539         .mhandler.cmd_new = qmp_marshal_input_query_rx_filter,
3540     },
3541
3542 SQMP
3543 query-rx-filter
3544 ---------------
3545
3546 Show rx-filter information.
3547
3548 Returns a json-array of rx-filter information for all NICs (or for the
3549 given NIC), returning an error if the given NIC doesn't exist, or
3550 given NIC doesn't support rx-filter querying, or given net client
3551 isn't a NIC.
3552
3553 The query will clear the event notification flag of each NIC, then qemu
3554 will start to emit event to QMP monitor.
3555
3556 Each array entry contains the following:
3557
3558 - "name": net client name (json-string)
3559 - "promiscuous": promiscuous mode is enabled (json-bool)
3560 - "multicast": multicast receive state (one of 'normal', 'none', 'all')
3561 - "unicast": unicast receive state  (one of 'normal', 'none', 'all')
3562 - "vlan": vlan receive state (one of 'normal', 'none', 'all') (Since 2.0)
3563 - "broadcast-allowed": allow to receive broadcast (json-bool)
3564 - "multicast-overflow": multicast table is overflowed (json-bool)
3565 - "unicast-overflow": unicast table is overflowed (json-bool)
3566 - "main-mac": main macaddr string (json-string)
3567 - "vlan-table": a json-array of active vlan id
3568 - "unicast-table": a json-array of unicast macaddr string
3569 - "multicast-table": a json-array of multicast macaddr string
3570
3571 Example:
3572
3573 -> { "execute": "query-rx-filter", "arguments": { "name": "vnet0" } }
3574 <- { "return": [
3575         {
3576             "promiscuous": true,
3577             "name": "vnet0",
3578             "main-mac": "52:54:00:12:34:56",
3579             "unicast": "normal",
3580             "vlan": "normal",
3581             "vlan-table": [
3582                 4,
3583                 0
3584             ],
3585             "unicast-table": [
3586             ],
3587             "multicast": "normal",
3588             "multicast-overflow": false,
3589             "unicast-overflow": false,
3590             "multicast-table": [
3591                 "01:00:5e:00:00:01",
3592                 "33:33:00:00:00:01",
3593                 "33:33:ff:12:34:56"
3594             ],
3595             "broadcast-allowed": false
3596         }
3597       ]
3598    }
3599
3600 EQMP
3601
3602     {
3603         .name       = "blockdev-add",
3604         .args_type  = "options:q",
3605         .mhandler.cmd_new = qmp_marshal_input_blockdev_add,
3606     },
3607
3608 SQMP
3609 blockdev-add
3610 ------------
3611
3612 Add a block device.
3613
3614 Arguments:
3615
3616 - "options": block driver options
3617
3618 Example (1):
3619
3620 -> { "execute": "blockdev-add",
3621     "arguments": { "options" : { "driver": "qcow2",
3622                                  "file": { "driver": "file",
3623                                            "filename": "test.qcow2" } } } }
3624 <- { "return": {} }
3625
3626 Example (2):
3627
3628 -> { "execute": "blockdev-add",
3629      "arguments": {
3630          "options": {
3631            "driver": "qcow2",
3632            "id": "my_disk",
3633            "discard": "unmap",
3634            "cache": {
3635                "direct": true,
3636                "writeback": true
3637            },
3638            "file": {
3639                "driver": "file",
3640                "filename": "/tmp/test.qcow2"
3641            },
3642            "backing": {
3643                "driver": "raw",
3644                "file": {
3645                    "driver": "file",
3646                    "filename": "/dev/fdset/4"
3647                }
3648            }
3649          }
3650        }
3651      }
3652
3653 <- { "return": {} }
3654
3655 EQMP
3656
3657     {
3658         .name       = "query-named-block-nodes",
3659         .args_type  = "",
3660         .mhandler.cmd_new = qmp_marshal_input_query_named_block_nodes,
3661     },
3662
3663 SQMP
3664 @query-named-block-nodes
3665 ------------------------
3666
3667 Return a list of BlockDeviceInfo for all the named block driver nodes
3668
3669 Example:
3670
3671 -> { "execute": "query-named-block-nodes" }
3672 <- { "return": [ { "ro":false,
3673                    "drv":"qcow2",
3674                    "encrypted":false,
3675                    "file":"disks/test.qcow2",
3676                    "node-name": "my-node",
3677                    "backing_file_depth":1,
3678                    "bps":1000000,
3679                    "bps_rd":0,
3680                    "bps_wr":0,
3681                    "iops":1000000,
3682                    "iops_rd":0,
3683                    "iops_wr":0,
3684                    "bps_max": 8000000,
3685                    "bps_rd_max": 0,
3686                    "bps_wr_max": 0,
3687                    "iops_max": 0,
3688                    "iops_rd_max": 0,
3689                    "iops_wr_max": 0,
3690                    "iops_size": 0,
3691                    "write_threshold": 0,
3692                    "image":{
3693                       "filename":"disks/test.qcow2",
3694                       "format":"qcow2",
3695                       "virtual-size":2048000,
3696                       "backing_file":"base.qcow2",
3697                       "full-backing-filename":"disks/base.qcow2",
3698                       "backing-filename-format:"qcow2",
3699                       "snapshots":[
3700                          {
3701                             "id": "1",
3702                             "name": "snapshot1",
3703                             "vm-state-size": 0,
3704                             "date-sec": 10000200,
3705                             "date-nsec": 12,
3706                             "vm-clock-sec": 206,
3707                             "vm-clock-nsec": 30
3708                          }
3709                       ],
3710                       "backing-image":{
3711                           "filename":"disks/base.qcow2",
3712                           "format":"qcow2",
3713                           "virtual-size":2048000
3714                       }
3715                    } } ] }
3716
3717 EQMP
3718
3719     {
3720         .name       = "query-memdev",
3721         .args_type  = "",
3722         .mhandler.cmd_new = qmp_marshal_input_query_memdev,
3723     },
3724
3725 SQMP
3726 query-memdev
3727 ------------
3728
3729 Show memory devices information.
3730
3731
3732 Example (1):
3733
3734 -> { "execute": "query-memdev" }
3735 <- { "return": [
3736        {
3737          "size": 536870912,
3738          "merge": false,
3739          "dump": true,
3740          "prealloc": false,
3741          "host-nodes": [0, 1],
3742          "policy": "bind"
3743        },
3744        {
3745          "size": 536870912,
3746          "merge": false,
3747          "dump": true,
3748          "prealloc": true,
3749          "host-nodes": [2, 3],
3750          "policy": "preferred"
3751        }
3752      ]
3753    }
3754
3755 EQMP
3756
3757     {
3758         .name       = "query-memory-devices",
3759         .args_type  = "",
3760         .mhandler.cmd_new = qmp_marshal_input_query_memory_devices,
3761     },
3762
3763 SQMP
3764 @query-memory-devices
3765 --------------------
3766
3767 Return a list of memory devices.
3768
3769 Example:
3770 -> { "execute": "query-memory-devices" }
3771 <- { "return": [ { "data":
3772                       { "addr": 5368709120,
3773                         "hotpluggable": true,
3774                         "hotplugged": true,
3775                         "id": "d1",
3776                         "memdev": "/objects/memX",
3777                         "node": 0,
3778                         "size": 1073741824,
3779                         "slot": 0},
3780                    "type": "dimm"
3781                  } ] }
3782 EQMP
3783
3784     {
3785         .name       = "query-acpi-ospm-status",
3786         .args_type  = "",
3787         .mhandler.cmd_new = qmp_marshal_input_query_acpi_ospm_status,
3788     },
3789
3790 SQMP
3791 @query-acpi-ospm-status
3792 --------------------
3793
3794 Return list of ACPIOSTInfo for devices that support status reporting
3795 via ACPI _OST method.
3796
3797 Example:
3798 -> { "execute": "query-acpi-ospm-status" }
3799 <- { "return": [ { "device": "d1", "slot": "0", "slot-type": "DIMM", "source": 1, "status": 0},
3800                  { "slot": "1", "slot-type": "DIMM", "source": 0, "status": 0},
3801                  { "slot": "2", "slot-type": "DIMM", "source": 0, "status": 0},
3802                  { "slot": "3", "slot-type": "DIMM", "source": 0, "status": 0}
3803    ]}
3804 EQMP
3805
3806 #if defined TARGET_I386
3807     {
3808         .name       = "rtc-reset-reinjection",
3809         .args_type  = "",
3810         .mhandler.cmd_new = qmp_marshal_input_rtc_reset_reinjection,
3811     },
3812 #endif
3813
3814 SQMP
3815 rtc-reset-reinjection
3816 ---------------------
3817
3818 Reset the RTC interrupt reinjection backlog.
3819
3820 Arguments: None.
3821
3822 Example:
3823
3824 -> { "execute": "rtc-reset-reinjection" }
3825 <- { "return": {} }
3826 EQMP
3827
3828     {
3829         .name       = "trace-event-get-state",
3830         .args_type  = "name:s",
3831         .mhandler.cmd_new = qmp_marshal_input_trace_event_get_state,
3832     },
3833
3834 SQMP
3835 trace-event-get-state
3836 ---------------------
3837
3838 Query the state of events.
3839
3840 Example:
3841
3842 -> { "execute": "trace-event-get-state", "arguments": { "name": "qemu_memalign" } }
3843 <- { "return": [ { "name": "qemu_memalign", "state": "disabled" } ] }
3844 EQMP
3845
3846     {
3847         .name       = "trace-event-set-state",
3848         .args_type  = "name:s,enable:b,ignore-unavailable:b?",
3849         .mhandler.cmd_new = qmp_marshal_input_trace_event_set_state,
3850     },
3851
3852 SQMP
3853 trace-event-set-state
3854 ---------------------
3855
3856 Set the state of events.
3857
3858 Example:
3859
3860 -> { "execute": "trace-event-set-state", "arguments": { "name": "qemu_memalign", "enable": "true" } }
3861 <- { "return": {} }
3862 EQMP
3863
3864     {
3865         .name       = "x-input-send-event",
3866         .args_type  = "console:i?,events:q",
3867         .mhandler.cmd_new = qmp_marshal_input_x_input_send_event,
3868     },
3869
3870 SQMP
3871 @x-input-send-event
3872 -----------------
3873
3874 Send input event to guest.
3875
3876 Arguments:
3877
3878 - "console": console index. (json-int, optional)
3879 - "events": list of input events.
3880
3881 The consoles are visible in the qom tree, under
3882 /backend/console[$index]. They have a device link and head property, so
3883 it is possible to map which console belongs to which device and display.
3884
3885 Note: this command is experimental, and not a stable API.
3886
3887 Example (1):
3888
3889 Press left mouse button.
3890
3891 -> { "execute": "x-input-send-event",
3892     "arguments": { "console": 0,
3893                    "events": [ { "type": "btn",
3894                     "data" : { "down": true, "button": "Left" } } ] } }
3895 <- { "return": {} }
3896
3897 -> { "execute": "x-input-send-event",
3898     "arguments": { "console": 0,
3899                    "events": [ { "type": "btn",
3900                     "data" : { "down": false, "button": "Left" } } ] } }
3901 <- { "return": {} }
3902
3903 Example (2):
3904
3905 Press ctrl-alt-del.
3906
3907 -> { "execute": "x-input-send-event",
3908      "arguments": { "console": 0, "events": [
3909         { "type": "key", "data" : { "down": true,
3910           "key": {"type": "qcode", "data": "ctrl" } } },
3911         { "type": "key", "data" : { "down": true,
3912           "key": {"type": "qcode", "data": "alt" } } },
3913         { "type": "key", "data" : { "down": true,
3914           "key": {"type": "qcode", "data": "delete" } } } ] } }
3915 <- { "return": {} }
3916
3917 Example (3):
3918
3919 Move mouse pointer to absolute coordinates (20000, 400).
3920
3921 -> { "execute": "x-input-send-event" ,
3922   "arguments": { "console": 0, "events": [
3923                { "type": "abs", "data" : { "axis": "X", "value" : 20000 } },
3924                { "type": "abs", "data" : { "axis": "Y", "value" : 400 } } ] } }
3925 <- { "return": {} }
3926
3927 EQMP
3928
3929     {
3930         .name       = "block-set-write-threshold",
3931         .args_type  = "node-name:s,write-threshold:l",
3932         .mhandler.cmd_new = qmp_marshal_input_block_set_write_threshold,
3933     },
3934
3935 SQMP
3936 block-set-write-threshold
3937 ------------
3938
3939 Change the write threshold for a block drive. The threshold is an offset,
3940 thus must be non-negative. Default is no write threshold.
3941 Setting the threshold to zero disables it.
3942
3943 Arguments:
3944
3945 - "node-name": the node name in the block driver state graph (json-string)
3946 - "write-threshold": the write threshold in bytes (json-int)
3947
3948 Example:
3949
3950 -> { "execute": "block-set-write-threshold",
3951   "arguments": { "node-name": "mydev",
3952                  "write-threshold": 17179869184 } }
3953 <- { "return": {} }
3954
3955 EQMP