1HXCOMM Use DEFHEADING() to define headings in both help text and rST. 2HXCOMM Text between SRST and ERST is copied to the rST version and 3HXCOMM discarded from C version. 4HXCOMM DEF(command, args, callback, arg_string, help) is used to construct 5HXCOMM monitor commands 6HXCOMM HXCOMM can be used for comments, discarded from both rST and C. 7 8 9 { 10 .name = "help|?", 11 .args_type = "name:S?", 12 .params = "[cmd]", 13 .help = "show the help", 14 .cmd = do_help_cmd, 15 .flags = "p", 16 }, 17 18SRST 19``help`` or ``?`` [*cmd*] 20 Show the help for all commands or just for command *cmd*. 21ERST 22 23 { 24 .name = "commit", 25 .args_type = "device:B", 26 .params = "device|all", 27 .help = "commit changes to the disk images (if -snapshot is used) or backing files", 28 .cmd = hmp_commit, 29 }, 30 31SRST 32``commit`` 33 Commit changes to the disk images (if -snapshot is used) or backing files. 34 If the backing file is smaller than the snapshot, then the backing file 35 will be resized to be the same size as the snapshot. If the snapshot is 36 smaller than the backing file, the backing file will not be truncated. 37 If you want the backing file to match the size of the smaller snapshot, 38 you can safely truncate it yourself once the commit operation successfully 39 completes. 40ERST 41 42 { 43 .name = "q|quit", 44 .args_type = "", 45 .params = "", 46 .help = "quit the emulator", 47 .cmd = hmp_quit, 48 }, 49 50SRST 51``q`` or ``quit`` 52 Quit the emulator. 53ERST 54 55 { 56 .name = "exit_preconfig", 57 .args_type = "", 58 .params = "", 59 .help = "exit the preconfig state", 60 .cmd = hmp_exit_preconfig, 61 .flags = "p", 62 }, 63 64SRST 65``exit_preconfig`` 66 This command makes QEMU exit the preconfig state and proceed with 67 VM initialization using configuration data provided on the command line 68 and via the QMP monitor during the preconfig state. The command is only 69 available during the preconfig state (i.e. when the --preconfig command 70 line option was in use). 71ERST 72 73 { 74 .name = "block_resize", 75 .args_type = "device:B,size:o", 76 .params = "device size", 77 .help = "resize a block image", 78 .cmd = hmp_block_resize, 79 }, 80 81SRST 82``block_resize`` 83 Resize a block image while a guest is running. Usually requires guest 84 action to see the updated size. Resize to a lower size is supported, 85 but should be used with extreme caution. Note that this command only 86 resizes image files, it can not resize block devices like LVM volumes. 87ERST 88 89 { 90 .name = "block_stream", 91 .args_type = "device:B,speed:o?,base:s?", 92 .params = "device [speed [base]]", 93 .help = "copy data from a backing file into a block device", 94 .cmd = hmp_block_stream, 95 }, 96 97SRST 98``block_stream`` 99 Copy data from a backing file into a block device. 100ERST 101 102 { 103 .name = "block_job_set_speed", 104 .args_type = "device:B,speed:o", 105 .params = "device speed", 106 .help = "set maximum speed for a background block operation", 107 .cmd = hmp_block_job_set_speed, 108 }, 109 110SRST 111``block_job_set_speed`` 112 Set maximum speed for a background block operation. 113ERST 114 115 { 116 .name = "block_job_cancel", 117 .args_type = "force:-f,device:B", 118 .params = "[-f] device", 119 .help = "stop an active background block operation (use -f" 120 "\n\t\t\t if you want to abort the operation immediately" 121 "\n\t\t\t instead of keep running until data is in sync)", 122 .cmd = hmp_block_job_cancel, 123 }, 124 125SRST 126``block_job_cancel`` 127 Stop an active background block operation (streaming, mirroring). 128ERST 129 130 { 131 .name = "block_job_complete", 132 .args_type = "device:B", 133 .params = "device", 134 .help = "stop an active background block operation", 135 .cmd = hmp_block_job_complete, 136 }, 137 138SRST 139``block_job_complete`` 140 Manually trigger completion of an active background block operation. 141 For mirroring, this will switch the device to the destination path. 142ERST 143 144 { 145 .name = "block_job_pause", 146 .args_type = "device:B", 147 .params = "device", 148 .help = "pause an active background block operation", 149 .cmd = hmp_block_job_pause, 150 }, 151 152SRST 153``block_job_pause`` 154 Pause an active block streaming operation. 155ERST 156 157 { 158 .name = "block_job_resume", 159 .args_type = "device:B", 160 .params = "device", 161 .help = "resume a paused background block operation", 162 .cmd = hmp_block_job_resume, 163 }, 164 165SRST 166``block_job_resume`` 167 Resume a paused block streaming operation. 168ERST 169 170 { 171 .name = "eject", 172 .args_type = "force:-f,device:B", 173 .params = "[-f] device", 174 .help = "eject a removable medium (use -f to force it)", 175 .cmd = hmp_eject, 176 }, 177 178SRST 179``eject [-f]`` *device* 180 Eject a removable medium (use -f to force it). 181ERST 182 183 { 184 .name = "drive_del", 185 .args_type = "id:B", 186 .params = "device", 187 .help = "remove host block device", 188 .cmd = hmp_drive_del, 189 }, 190 191SRST 192``drive_del`` *device* 193 Remove host block device. The result is that guest generated IO is no longer 194 submitted against the host device underlying the disk. Once a drive has 195 been deleted, the QEMU Block layer returns -EIO which results in IO 196 errors in the guest for applications that are reading/writing to the device. 197 These errors are always reported to the guest, regardless of the drive's error 198 actions (drive options rerror, werror). 199ERST 200 201 { 202 .name = "change", 203 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?", 204 .params = "device filename [format [read-only-mode]]", 205 .help = "change a removable medium, optional format", 206 .cmd = hmp_change, 207 }, 208 209SRST 210``change`` *device* *setting* 211 Change the configuration of a device. 212 213 ``change`` *diskdevice* *filename* [*format* [*read-only-mode*]] 214 Change the medium for a removable disk device to point to *filename*. eg:: 215 216 (qemu) change ide1-cd0 /path/to/some.iso 217 218 *format* is optional. 219 220 *read-only-mode* may be used to change the read-only status of the device. 221 It accepts the following values: 222 223 retain 224 Retains the current status; this is the default. 225 226 read-only 227 Makes the device read-only. 228 229 read-write 230 Makes the device writable. 231 232 ``change vnc`` *display*,\ *options* 233 Change the configuration of the VNC server. The valid syntax for *display* 234 and *options* are described at :ref:`sec_005finvocation`. eg:: 235 236 (qemu) change vnc localhost:1 237 238 ``change vnc password`` [*password*] 239 240 Change the password associated with the VNC server. If the new password 241 is not supplied, the monitor will prompt for it to be entered. VNC 242 passwords are only significant up to 8 letters. eg:: 243 244 (qemu) change vnc password 245 Password: ******** 246 247ERST 248 249 { 250 .name = "screendump", 251 .args_type = "filename:F,device:s?,head:i?", 252 .params = "filename [device [head]]", 253 .help = "save screen from head 'head' of display device 'device' " 254 "into PPM image 'filename'", 255 .cmd = hmp_screendump, 256 }, 257 258SRST 259``screendump`` *filename* 260 Save screen into PPM image *filename*. 261ERST 262 263 { 264 .name = "logfile", 265 .args_type = "filename:F", 266 .params = "filename", 267 .help = "output logs to 'filename'", 268 .cmd = hmp_logfile, 269 }, 270 271SRST 272``logfile`` *filename* 273 Output logs to *filename*. 274ERST 275 276 { 277 .name = "trace-event", 278 .args_type = "name:s,option:b,vcpu:i?", 279 .params = "name on|off [vcpu]", 280 .help = "changes status of a specific trace event " 281 "(vcpu: vCPU to set, default is all)", 282 .cmd = hmp_trace_event, 283 .command_completion = trace_event_completion, 284 }, 285 286SRST 287``trace-event`` 288 changes status of a trace event 289ERST 290 291#if defined(CONFIG_TRACE_SIMPLE) 292 { 293 .name = "trace-file", 294 .args_type = "op:s?,arg:F?", 295 .params = "on|off|flush|set [arg]", 296 .help = "open, close, or flush trace file, or set a new file name", 297 .cmd = hmp_trace_file, 298 }, 299 300SRST 301``trace-file on|off|flush`` 302 Open, close, or flush the trace file. If no argument is given, the 303 status of the trace file is displayed. 304ERST 305#endif 306 307 { 308 .name = "log", 309 .args_type = "items:s", 310 .params = "item1[,...]", 311 .help = "activate logging of the specified items", 312 .cmd = hmp_log, 313 }, 314 315SRST 316``log`` *item1*\ [,...] 317 Activate logging of the specified items. 318ERST 319 320 { 321 .name = "savevm", 322 .args_type = "name:s?", 323 .params = "tag", 324 .help = "save a VM snapshot. If no tag is provided, a new snapshot is created", 325 .cmd = hmp_savevm, 326 }, 327 328SRST 329``savevm`` *tag* 330 Create a snapshot of the whole virtual machine. If *tag* is 331 provided, it is used as human readable identifier. If there is already 332 a snapshot with the same tag, it is replaced. More info at 333 :ref:`vm_005fsnapshots`. 334 335 Since 4.0, savevm stopped allowing the snapshot id to be set, accepting 336 only *tag* as parameter. 337ERST 338 339 { 340 .name = "loadvm", 341 .args_type = "name:s", 342 .params = "tag", 343 .help = "restore a VM snapshot from its tag", 344 .cmd = hmp_loadvm, 345 .command_completion = loadvm_completion, 346 }, 347 348SRST 349``loadvm`` *tag* 350 Set the whole virtual machine to the snapshot identified by the tag 351 *tag*. 352 353 Since 4.0, loadvm stopped accepting snapshot id as parameter. 354ERST 355 356 { 357 .name = "delvm", 358 .args_type = "name:s", 359 .params = "tag", 360 .help = "delete a VM snapshot from its tag", 361 .cmd = hmp_delvm, 362 .command_completion = delvm_completion, 363 }, 364 365SRST 366``delvm`` *tag* 367 Delete the snapshot identified by *tag*. 368 369 Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting 370 only *tag* as parameter. 371ERST 372 373 { 374 .name = "singlestep", 375 .args_type = "option:s?", 376 .params = "[on|off]", 377 .help = "run emulation in singlestep mode or switch to normal mode", 378 .cmd = hmp_singlestep, 379 }, 380 381SRST 382``singlestep [off]`` 383 Run the emulation in single step mode. 384 If called with option off, the emulation returns to normal mode. 385ERST 386 387 { 388 .name = "stop", 389 .args_type = "", 390 .params = "", 391 .help = "stop emulation", 392 .cmd = hmp_stop, 393 }, 394 395SRST 396``stop`` 397 Stop emulation. 398ERST 399 400 { 401 .name = "c|cont", 402 .args_type = "", 403 .params = "", 404 .help = "resume emulation", 405 .cmd = hmp_cont, 406 }, 407 408SRST 409``c`` or ``cont`` 410 Resume emulation. 411ERST 412 413 { 414 .name = "system_wakeup", 415 .args_type = "", 416 .params = "", 417 .help = "wakeup guest from suspend", 418 .cmd = hmp_system_wakeup, 419 }, 420 421SRST 422``system_wakeup`` 423 Wakeup guest from suspend. 424ERST 425 426 { 427 .name = "gdbserver", 428 .args_type = "device:s?", 429 .params = "[device]", 430 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", 431 .cmd = hmp_gdbserver, 432 }, 433 434SRST 435``gdbserver`` [*port*] 436 Start gdbserver session (default *port*\=1234) 437ERST 438 439 { 440 .name = "x", 441 .args_type = "fmt:/,addr:l", 442 .params = "/fmt addr", 443 .help = "virtual memory dump starting at 'addr'", 444 .cmd = hmp_memory_dump, 445 }, 446 447SRST 448``x/``\ *fmt* *addr* 449 Virtual memory dump starting at *addr*. 450ERST 451 452 { 453 .name = "xp", 454 .args_type = "fmt:/,addr:l", 455 .params = "/fmt addr", 456 .help = "physical memory dump starting at 'addr'", 457 .cmd = hmp_physical_memory_dump, 458 }, 459 460SRST 461``xp /``\ *fmt* *addr* 462 Physical memory dump starting at *addr*. 463 464 *fmt* is a format which tells the command how to format the 465 data. Its syntax is: ``/{count}{format}{size}`` 466 467 *count* 468 is the number of items to be dumped. 469 *format* 470 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal), 471 c (char) or i (asm instruction). 472 *size* 473 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86, 474 ``h`` or ``w`` can be specified with the ``i`` format to 475 respectively select 16 or 32 bit code instruction size. 476 477 Examples: 478 479 Dump 10 instructions at the current instruction pointer:: 480 481 (qemu) x/10i $eip 482 0x90107063: ret 483 0x90107064: sti 484 0x90107065: lea 0x0(%esi,1),%esi 485 0x90107069: lea 0x0(%edi,1),%edi 486 0x90107070: ret 487 0x90107071: jmp 0x90107080 488 0x90107073: nop 489 0x90107074: nop 490 0x90107075: nop 491 0x90107076: nop 492 493 Dump 80 16 bit values at the start of the video memory:: 494 495 (qemu) xp/80hx 0xb8000 496 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42 497 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41 498 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72 499 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73 500 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20 501 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720 502 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 503 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 504 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 505 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 506 507ERST 508 509 { 510 .name = "gpa2hva", 511 .args_type = "addr:l", 512 .params = "addr", 513 .help = "print the host virtual address corresponding to a guest physical address", 514 .cmd = hmp_gpa2hva, 515 }, 516 517SRST 518``gpa2hva`` *addr* 519 Print the host virtual address at which the guest's physical address *addr* 520 is mapped. 521ERST 522 523#ifdef CONFIG_LINUX 524 { 525 .name = "gpa2hpa", 526 .args_type = "addr:l", 527 .params = "addr", 528 .help = "print the host physical address corresponding to a guest physical address", 529 .cmd = hmp_gpa2hpa, 530 }, 531#endif 532 533SRST 534``gpa2hpa`` *addr* 535 Print the host physical address at which the guest's physical address *addr* 536 is mapped. 537ERST 538 539 { 540 .name = "gva2gpa", 541 .args_type = "addr:l", 542 .params = "addr", 543 .help = "print the guest physical address corresponding to a guest virtual address", 544 .cmd = hmp_gva2gpa, 545 }, 546 547SRST 548``gva2gpa`` *addr* 549 Print the guest physical address at which the guest's virtual address *addr* 550 is mapped based on the mapping for the current CPU. 551ERST 552 553 { 554 .name = "p|print", 555 .args_type = "fmt:/,val:l", 556 .params = "/fmt expr", 557 .help = "print expression value (use $reg for CPU register access)", 558 .cmd = do_print, 559 }, 560 561SRST 562``p`` or ``print/``\ *fmt* *expr* 563 Print expression value. Only the *format* part of *fmt* is 564 used. 565ERST 566 567 { 568 .name = "i", 569 .args_type = "fmt:/,addr:i,index:i.", 570 .params = "/fmt addr", 571 .help = "I/O port read", 572 .cmd = hmp_ioport_read, 573 }, 574 575SRST 576``i/``\ *fmt* *addr* [.\ *index*\ ] 577 Read I/O port. 578ERST 579 580 { 581 .name = "o", 582 .args_type = "fmt:/,addr:i,val:i", 583 .params = "/fmt addr value", 584 .help = "I/O port write", 585 .cmd = hmp_ioport_write, 586 }, 587 588SRST 589``o/``\ *fmt* *addr* *val* 590 Write to I/O port. 591ERST 592 593 { 594 .name = "sendkey", 595 .args_type = "keys:s,hold-time:i?", 596 .params = "keys [hold_ms]", 597 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)", 598 .cmd = hmp_sendkey, 599 .command_completion = sendkey_completion, 600 }, 601 602SRST 603``sendkey`` *keys* 604 Send *keys* to the guest. *keys* could be the name of the 605 key or the raw value in hexadecimal format. Use ``-`` to press 606 several keys simultaneously. Example:: 607 608 sendkey ctrl-alt-f1 609 610 This command is useful to send keys that your graphical user interface 611 intercepts at low level, such as ``ctrl-alt-f1`` in X Window. 612ERST 613 { 614 .name = "sync-profile", 615 .args_type = "op:s?", 616 .params = "[on|off|reset]", 617 .help = "enable, disable or reset synchronization profiling. " 618 "With no arguments, prints whether profiling is on or off.", 619 .cmd = hmp_sync_profile, 620 }, 621 622SRST 623``sync-profile [on|off|reset]`` 624 Enable, disable or reset synchronization profiling. With no arguments, prints 625 whether profiling is on or off. 626ERST 627 628 { 629 .name = "system_reset", 630 .args_type = "", 631 .params = "", 632 .help = "reset the system", 633 .cmd = hmp_system_reset, 634 }, 635 636SRST 637``system_reset`` 638 Reset the system. 639ERST 640 641 { 642 .name = "system_powerdown", 643 .args_type = "", 644 .params = "", 645 .help = "send system power down event", 646 .cmd = hmp_system_powerdown, 647 }, 648 649SRST 650``system_powerdown`` 651 Power down the system (if supported). 652ERST 653 654 { 655 .name = "sum", 656 .args_type = "start:i,size:i", 657 .params = "addr size", 658 .help = "compute the checksum of a memory region", 659 .cmd = hmp_sum, 660 }, 661 662SRST 663``sum`` *addr* *size* 664 Compute the checksum of a memory region. 665ERST 666 667 { 668 .name = "device_add", 669 .args_type = "device:O", 670 .params = "driver[,prop=value][,...]", 671 .help = "add device, like -device on the command line", 672 .cmd = hmp_device_add, 673 .command_completion = device_add_completion, 674 }, 675 676SRST 677``device_add`` *config* 678 Add device. 679ERST 680 681 { 682 .name = "device_del", 683 .args_type = "id:s", 684 .params = "device", 685 .help = "remove device", 686 .cmd = hmp_device_del, 687 .command_completion = device_del_completion, 688 }, 689 690SRST 691``device_del`` *id* 692 Remove device *id*. *id* may be a short ID 693 or a QOM object path. 694ERST 695 696 { 697 .name = "cpu", 698 .args_type = "index:i", 699 .params = "index", 700 .help = "set the default CPU", 701 .cmd = hmp_cpu, 702 }, 703 704SRST 705``cpu`` *index* 706 Set the default CPU. 707ERST 708 709 { 710 .name = "mouse_move", 711 .args_type = "dx_str:s,dy_str:s,dz_str:s?", 712 .params = "dx dy [dz]", 713 .help = "send mouse move events", 714 .cmd = hmp_mouse_move, 715 }, 716 717SRST 718``mouse_move`` *dx* *dy* [*dz*] 719 Move the active mouse to the specified coordinates *dx* *dy* 720 with optional scroll axis *dz*. 721ERST 722 723 { 724 .name = "mouse_button", 725 .args_type = "button_state:i", 726 .params = "state", 727 .help = "change mouse button state (1=L, 2=M, 4=R)", 728 .cmd = hmp_mouse_button, 729 }, 730 731SRST 732``mouse_button`` *val* 733 Change the active mouse button state *val* (1=L, 2=M, 4=R). 734ERST 735 736 { 737 .name = "mouse_set", 738 .args_type = "index:i", 739 .params = "index", 740 .help = "set which mouse device receives events", 741 .cmd = hmp_mouse_set, 742 }, 743 744SRST 745``mouse_set`` *index* 746 Set which mouse device receives events at given *index*, index 747 can be obtained with:: 748 749 info mice 750 751ERST 752 753 { 754 .name = "wavcapture", 755 .args_type = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?", 756 .params = "path audiodev [frequency [bits [channels]]]", 757 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)", 758 .cmd = hmp_wavcapture, 759 }, 760SRST 761``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]] 762 Capture audio into *filename* from *audiodev*, using sample rate 763 *frequency* bits per sample *bits* and number of channels 764 *channels*. 765 766 Defaults: 767 768 - Sample rate = 44100 Hz - CD quality 769 - Bits = 16 770 - Number of channels = 2 - Stereo 771ERST 772 773 { 774 .name = "stopcapture", 775 .args_type = "n:i", 776 .params = "capture index", 777 .help = "stop capture", 778 .cmd = hmp_stopcapture, 779 }, 780SRST 781``stopcapture`` *index* 782 Stop capture with a given *index*, index can be obtained with:: 783 784 info capture 785 786ERST 787 788 { 789 .name = "memsave", 790 .args_type = "val:l,size:i,filename:s", 791 .params = "addr size file", 792 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'", 793 .cmd = hmp_memsave, 794 }, 795 796SRST 797``memsave`` *addr* *size* *file* 798 save to disk virtual memory dump starting at *addr* of size *size*. 799ERST 800 801 { 802 .name = "pmemsave", 803 .args_type = "val:l,size:i,filename:s", 804 .params = "addr size file", 805 .help = "save to disk physical memory dump starting at 'addr' of size 'size'", 806 .cmd = hmp_pmemsave, 807 }, 808 809SRST 810``pmemsave`` *addr* *size* *file* 811 save to disk physical memory dump starting at *addr* of size *size*. 812ERST 813 814 { 815 .name = "boot_set", 816 .args_type = "bootdevice:s", 817 .params = "bootdevice", 818 .help = "define new values for the boot device list", 819 .cmd = hmp_boot_set, 820 }, 821 822SRST 823``boot_set`` *bootdevicelist* 824 Define new values for the boot device list. Those values will override 825 the values specified on the command line through the ``-boot`` option. 826 827 The values that can be specified here depend on the machine type, but are 828 the same that can be specified in the ``-boot`` command line option. 829ERST 830 831 { 832 .name = "nmi", 833 .args_type = "", 834 .params = "", 835 .help = "inject an NMI", 836 .cmd = hmp_nmi, 837 }, 838SRST 839``nmi`` *cpu* 840 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64). 841ERST 842 843 { 844 .name = "ringbuf_write", 845 .args_type = "device:s,data:s", 846 .params = "device data", 847 .help = "Write to a ring buffer character device", 848 .cmd = hmp_ringbuf_write, 849 .command_completion = ringbuf_write_completion, 850 }, 851 852SRST 853``ringbuf_write`` *device* *data* 854 Write *data* to ring buffer character device *device*. 855 *data* must be a UTF-8 string. 856ERST 857 858 { 859 .name = "ringbuf_read", 860 .args_type = "device:s,size:i", 861 .params = "device size", 862 .help = "Read from a ring buffer character device", 863 .cmd = hmp_ringbuf_read, 864 .command_completion = ringbuf_write_completion, 865 }, 866 867SRST 868``ringbuf_read`` *device* 869 Read and print up to *size* bytes from ring buffer character 870 device *device*. 871 Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the 872 character code in hexadecimal. Character ``\`` is printed ``\\``. 873 Bug: can screw up when the buffer contains invalid UTF-8 sequences, 874 NUL characters, after the ring buffer lost data, and when reading 875 stops because the size limit is reached. 876ERST 877 878 { 879 .name = "announce_self", 880 .args_type = "interfaces:s?,id:s?", 881 .params = "[interfaces] [id]", 882 .help = "Trigger GARP/RARP announcements", 883 .cmd = hmp_announce_self, 884 }, 885 886SRST 887``announce_self`` 888 Trigger a round of GARP/RARP broadcasts; this is useful for explicitly 889 updating the network infrastructure after a reconfiguration or some forms 890 of migration. The timings of the round are set by the migration announce 891 parameters. An optional comma separated *interfaces* list restricts the 892 announce to the named set of interfaces. An optional *id* can be used to 893 start a separate announce timer and to change the parameters of it later. 894ERST 895 896 { 897 .name = "migrate", 898 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s", 899 .params = "[-d] [-b] [-i] [-r] uri", 900 .help = "migrate to URI (using -d to not wait for completion)" 901 "\n\t\t\t -b for migration without shared storage with" 902 " full copy of disk\n\t\t\t -i for migration without " 903 "shared storage with incremental copy of disk " 904 "(base image shared between src and destination)" 905 "\n\t\t\t -r to resume a paused migration", 906 .cmd = hmp_migrate, 907 }, 908 909 910SRST 911``migrate [-d] [-b] [-i]`` *uri* 912 Migrate to *uri* (using -d to not wait for completion). 913 914 ``-b`` 915 for migration with full copy of disk 916 ``-i`` 917 for migration with incremental copy of disk (base image is shared) 918ERST 919 920 { 921 .name = "migrate_cancel", 922 .args_type = "", 923 .params = "", 924 .help = "cancel the current VM migration", 925 .cmd = hmp_migrate_cancel, 926 }, 927 928SRST 929``migrate_cancel`` 930 Cancel the current VM migration. 931ERST 932 933 { 934 .name = "migrate_continue", 935 .args_type = "state:s", 936 .params = "state", 937 .help = "Continue migration from the given paused state", 938 .cmd = hmp_migrate_continue, 939 }, 940SRST 941``migrate_continue`` *state* 942 Continue migration from the paused state *state* 943ERST 944 945 { 946 .name = "migrate_incoming", 947 .args_type = "uri:s", 948 .params = "uri", 949 .help = "Continue an incoming migration from an -incoming defer", 950 .cmd = hmp_migrate_incoming, 951 }, 952 953SRST 954``migrate_incoming`` *uri* 955 Continue an incoming migration using the *uri* (that has the same syntax 956 as the ``-incoming`` option). 957ERST 958 959 { 960 .name = "migrate_recover", 961 .args_type = "uri:s", 962 .params = "uri", 963 .help = "Continue a paused incoming postcopy migration", 964 .cmd = hmp_migrate_recover, 965 }, 966 967SRST 968``migrate_recover`` *uri* 969 Continue a paused incoming postcopy migration using the *uri*. 970ERST 971 972 { 973 .name = "migrate_pause", 974 .args_type = "", 975 .params = "", 976 .help = "Pause an ongoing migration (postcopy-only)", 977 .cmd = hmp_migrate_pause, 978 }, 979 980SRST 981``migrate_pause`` 982 Pause an ongoing migration. Currently it only supports postcopy. 983ERST 984 985 { 986 .name = "migrate_set_cache_size", 987 .args_type = "value:o", 988 .params = "value", 989 .help = "set cache size (in bytes) for XBZRLE migrations," 990 "the cache size will be rounded down to the nearest " 991 "power of 2.\n" 992 "The cache size affects the number of cache misses." 993 "In case of a high cache miss ratio you need to increase" 994 " the cache size", 995 .cmd = hmp_migrate_set_cache_size, 996 }, 997 998SRST 999``migrate_set_cache_size`` *value* 1000 Set cache size to *value* (in bytes) for xbzrle migrations. 1001ERST 1002 1003 { 1004 .name = "migrate_set_speed", 1005 .args_type = "value:o", 1006 .params = "value", 1007 .help = "set maximum speed (in bytes) for migrations. " 1008 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T", 1009 .cmd = hmp_migrate_set_speed, 1010 }, 1011 1012SRST 1013``migrate_set_speed`` *value* 1014 Set maximum speed to *value* (in bytes) for migrations. 1015ERST 1016 1017 { 1018 .name = "migrate_set_downtime", 1019 .args_type = "value:T", 1020 .params = "value", 1021 .help = "set maximum tolerated downtime (in seconds) for migrations", 1022 .cmd = hmp_migrate_set_downtime, 1023 }, 1024 1025SRST 1026``migrate_set_downtime`` *second* 1027 Set maximum tolerated downtime (in seconds) for migration. 1028ERST 1029 1030 { 1031 .name = "migrate_set_capability", 1032 .args_type = "capability:s,state:b", 1033 .params = "capability state", 1034 .help = "Enable/Disable the usage of a capability for migration", 1035 .cmd = hmp_migrate_set_capability, 1036 .command_completion = migrate_set_capability_completion, 1037 }, 1038 1039SRST 1040``migrate_set_capability`` *capability* *state* 1041 Enable/Disable the usage of a capability *capability* for migration. 1042ERST 1043 1044 { 1045 .name = "migrate_set_parameter", 1046 .args_type = "parameter:s,value:s", 1047 .params = "parameter value", 1048 .help = "Set the parameter for migration", 1049 .cmd = hmp_migrate_set_parameter, 1050 .command_completion = migrate_set_parameter_completion, 1051 }, 1052 1053SRST 1054``migrate_set_parameter`` *parameter* *value* 1055 Set the parameter *parameter* for migration. 1056ERST 1057 1058 { 1059 .name = "migrate_start_postcopy", 1060 .args_type = "", 1061 .params = "", 1062 .help = "Followup to a migration command to switch the migration" 1063 " to postcopy mode. The postcopy-ram capability must " 1064 "be set on both source and destination before the " 1065 "original migration command .", 1066 .cmd = hmp_migrate_start_postcopy, 1067 }, 1068 1069SRST 1070``migrate_start_postcopy`` 1071 Switch in-progress migration to postcopy mode. Ignored after the end of 1072 migration (or once already in postcopy). 1073ERST 1074 1075 { 1076 .name = "x_colo_lost_heartbeat", 1077 .args_type = "", 1078 .params = "", 1079 .help = "Tell COLO that heartbeat is lost,\n\t\t\t" 1080 "a failover or takeover is needed.", 1081 .cmd = hmp_x_colo_lost_heartbeat, 1082 }, 1083 1084SRST 1085``x_colo_lost_heartbeat`` 1086 Tell COLO that heartbeat is lost, a failover or takeover is needed. 1087ERST 1088 1089 { 1090 .name = "client_migrate_info", 1091 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", 1092 .params = "protocol hostname port tls-port cert-subject", 1093 .help = "set migration information for remote display", 1094 .cmd = hmp_client_migrate_info, 1095 }, 1096 1097SRST 1098``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject* 1099 Set migration information for remote display. This makes the server 1100 ask the client to automatically reconnect using the new parameters 1101 once migration finished successfully. Only implemented for SPICE. 1102ERST 1103 1104 { 1105 .name = "dump-guest-memory", 1106 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?", 1107 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]", 1108 .help = "dump guest memory into file 'filename'.\n\t\t\t" 1109 "-p: do paging to get guest's memory mapping.\n\t\t\t" 1110 "-d: return immediately (do not wait for completion).\n\t\t\t" 1111 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t" 1112 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t" 1113 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t" 1114 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t" 1115 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t" 1116 "begin: the starting physical address.\n\t\t\t" 1117 "length: the memory size, in bytes.", 1118 .cmd = hmp_dump_guest_memory, 1119 }, 1120 1121SRST 1122``dump-guest-memory [-p]`` *filename* *begin* *length* 1123 \ 1124``dump-guest-memory [-z|-l|-s|-w]`` *filename* 1125 Dump guest memory to *protocol*. The file can be processed with crash or 1126 gdb. Without ``-z|-l|-s|-w``, the dump format is ELF. 1127 1128 ``-p`` 1129 do paging to get guest's memory mapping. 1130 ``-z`` 1131 dump in kdump-compressed format, with zlib compression. 1132 ``-l`` 1133 dump in kdump-compressed format, with lzo compression. 1134 ``-s`` 1135 dump in kdump-compressed format, with snappy compression. 1136 ``-w`` 1137 dump in Windows crashdump format (can be used instead of ELF-dump converting), 1138 for Windows x64 guests with vmcoreinfo driver only 1139 *filename* 1140 dump file name. 1141 *begin* 1142 the starting physical address. It's optional, and should be 1143 specified together with *length*. 1144 *length* 1145 the memory size, in bytes. It's optional, and should be specified 1146 together with *begin*. 1147 1148ERST 1149 1150#if defined(TARGET_S390X) 1151 { 1152 .name = "dump-skeys", 1153 .args_type = "filename:F", 1154 .params = "", 1155 .help = "Save guest storage keys into file 'filename'.\n", 1156 .cmd = hmp_dump_skeys, 1157 }, 1158#endif 1159 1160SRST 1161``dump-skeys`` *filename* 1162 Save guest storage keys to a file. 1163ERST 1164 1165#if defined(TARGET_S390X) 1166 { 1167 .name = "migration_mode", 1168 .args_type = "mode:i", 1169 .params = "mode", 1170 .help = "Enables or disables migration mode\n", 1171 .cmd = hmp_migrationmode, 1172 }, 1173#endif 1174 1175SRST 1176``migration_mode`` *mode* 1177 Enables or disables migration mode. 1178ERST 1179 1180 { 1181 .name = "snapshot_blkdev", 1182 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?", 1183 .params = "[-n] device [new-image-file] [format]", 1184 .help = "initiates a live snapshot\n\t\t\t" 1185 "of device. If a new image file is specified, the\n\t\t\t" 1186 "new image file will become the new root image.\n\t\t\t" 1187 "If format is specified, the snapshot file will\n\t\t\t" 1188 "be created in that format.\n\t\t\t" 1189 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t" 1190 "to reuse the image found in new-image-file, instead of\n\t\t\t" 1191 "recreating it from scratch.", 1192 .cmd = hmp_snapshot_blkdev, 1193 }, 1194 1195SRST 1196``snapshot_blkdev`` 1197 Snapshot device, using snapshot file as target if provided 1198ERST 1199 1200 { 1201 .name = "snapshot_blkdev_internal", 1202 .args_type = "device:B,name:s", 1203 .params = "device name", 1204 .help = "take an internal snapshot of device.\n\t\t\t" 1205 "The format of the image used by device must\n\t\t\t" 1206 "support it, such as qcow2.\n\t\t\t", 1207 .cmd = hmp_snapshot_blkdev_internal, 1208 }, 1209 1210SRST 1211``snapshot_blkdev_internal`` 1212 Take an internal snapshot on device if it support 1213ERST 1214 1215 { 1216 .name = "snapshot_delete_blkdev_internal", 1217 .args_type = "device:B,name:s,id:s?", 1218 .params = "device name [id]", 1219 .help = "delete an internal snapshot of device.\n\t\t\t" 1220 "If id is specified, qemu will try delete\n\t\t\t" 1221 "the snapshot matching both id and name.\n\t\t\t" 1222 "The format of the image used by device must\n\t\t\t" 1223 "support it, such as qcow2.\n\t\t\t", 1224 .cmd = hmp_snapshot_delete_blkdev_internal, 1225 }, 1226 1227SRST 1228``snapshot_delete_blkdev_internal`` 1229 Delete an internal snapshot on device if it support 1230ERST 1231 1232 { 1233 .name = "drive_mirror", 1234 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?", 1235 .params = "[-n] [-f] device target [format]", 1236 .help = "initiates live storage\n\t\t\t" 1237 "migration for a device. The device's contents are\n\t\t\t" 1238 "copied to the new image file, including data that\n\t\t\t" 1239 "is written after the command is started.\n\t\t\t" 1240 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1241 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1242 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1243 "so that the result does not need a backing file.\n\t\t\t", 1244 .cmd = hmp_drive_mirror, 1245 }, 1246SRST 1247``drive_mirror`` 1248 Start mirroring a block device's writes to a new destination, 1249 using the specified target. 1250ERST 1251 1252 { 1253 .name = "drive_backup", 1254 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?", 1255 .params = "[-n] [-f] [-c] device target [format]", 1256 .help = "initiates a point-in-time\n\t\t\t" 1257 "copy for a device. The device's contents are\n\t\t\t" 1258 "copied to the new image file, excluding data that\n\t\t\t" 1259 "is written after the command is started.\n\t\t\t" 1260 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1261 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1262 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1263 "so that the result does not need a backing file.\n\t\t\t" 1264 "The -c flag requests QEMU to compress backup data\n\t\t\t" 1265 "(if the target format supports it).\n\t\t\t", 1266 .cmd = hmp_drive_backup, 1267 }, 1268SRST 1269``drive_backup`` 1270 Start a point-in-time copy of a block device to a specified target. 1271ERST 1272 1273 { 1274 .name = "drive_add", 1275 .args_type = "node:-n,pci_addr:s,opts:s", 1276 .params = "[-n] [[<domain>:]<bus>:]<slot>\n" 1277 "[file=file][,if=type][,bus=n]\n" 1278 "[,unit=m][,media=d][,index=i]\n" 1279 "[,snapshot=on|off][,cache=on|off]\n" 1280 "[,readonly=on|off][,copy-on-read=on|off]", 1281 .help = "add drive to PCI storage controller", 1282 .cmd = hmp_drive_add, 1283 }, 1284 1285SRST 1286``drive_add`` 1287 Add drive to PCI storage controller. 1288ERST 1289 1290 { 1291 .name = "pcie_aer_inject_error", 1292 .args_type = "advisory_non_fatal:-a,correctable:-c," 1293 "id:s,error_status:s," 1294 "header0:i?,header1:i?,header2:i?,header3:i?," 1295 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?", 1296 .params = "[-a] [-c] id " 1297 "<error_status> [<tlp header> [<tlp header prefix>]]", 1298 .help = "inject pcie aer error\n\t\t\t" 1299 " -a for advisory non fatal error\n\t\t\t" 1300 " -c for correctable error\n\t\t\t" 1301 "<id> = qdev device id\n\t\t\t" 1302 "<error_status> = error string or 32bit\n\t\t\t" 1303 "<tlb header> = 32bit x 4\n\t\t\t" 1304 "<tlb header prefix> = 32bit x 4", 1305 .cmd = hmp_pcie_aer_inject_error, 1306 }, 1307 1308SRST 1309``pcie_aer_inject_error`` 1310 Inject PCIe AER error 1311ERST 1312 1313 { 1314 .name = "netdev_add", 1315 .args_type = "netdev:O", 1316 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]", 1317 .help = "add host network device", 1318 .cmd = hmp_netdev_add, 1319 .command_completion = netdev_add_completion, 1320 }, 1321 1322SRST 1323``netdev_add`` 1324 Add host network device. 1325ERST 1326 1327 { 1328 .name = "netdev_del", 1329 .args_type = "id:s", 1330 .params = "id", 1331 .help = "remove host network device", 1332 .cmd = hmp_netdev_del, 1333 .command_completion = netdev_del_completion, 1334 }, 1335 1336SRST 1337``netdev_del`` 1338 Remove host network device. 1339ERST 1340 1341 { 1342 .name = "object_add", 1343 .args_type = "object:O", 1344 .params = "[qom-type=]type,id=str[,prop=value][,...]", 1345 .help = "create QOM object", 1346 .cmd = hmp_object_add, 1347 .command_completion = object_add_completion, 1348 }, 1349 1350SRST 1351``object_add`` 1352 Create QOM object. 1353ERST 1354 1355 { 1356 .name = "object_del", 1357 .args_type = "id:s", 1358 .params = "id", 1359 .help = "destroy QOM object", 1360 .cmd = hmp_object_del, 1361 .command_completion = object_del_completion, 1362 }, 1363 1364SRST 1365``object_del`` 1366 Destroy QOM object. 1367ERST 1368 1369#ifdef CONFIG_SLIRP 1370 { 1371 .name = "hostfwd_add", 1372 .args_type = "arg1:s,arg2:s?", 1373 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport", 1374 .help = "redirect TCP or UDP connections from host to guest (requires -net user)", 1375 .cmd = hmp_hostfwd_add, 1376 }, 1377#endif 1378SRST 1379``hostfwd_add`` 1380 Redirect TCP or UDP connections from host to guest (requires -net user). 1381ERST 1382 1383#ifdef CONFIG_SLIRP 1384 { 1385 .name = "hostfwd_remove", 1386 .args_type = "arg1:s,arg2:s?", 1387 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport", 1388 .help = "remove host-to-guest TCP or UDP redirection", 1389 .cmd = hmp_hostfwd_remove, 1390 }, 1391 1392#endif 1393SRST 1394``hostfwd_remove`` 1395 Remove host-to-guest TCP or UDP redirection. 1396ERST 1397 1398 { 1399 .name = "balloon", 1400 .args_type = "value:M", 1401 .params = "target", 1402 .help = "request VM to change its memory allocation (in MB)", 1403 .cmd = hmp_balloon, 1404 }, 1405 1406SRST 1407``balloon`` *value* 1408 Request VM to change its memory allocation to *value* (in MB). 1409ERST 1410 1411 { 1412 .name = "set_link", 1413 .args_type = "name:s,up:b", 1414 .params = "name on|off", 1415 .help = "change the link status of a network adapter", 1416 .cmd = hmp_set_link, 1417 .command_completion = set_link_completion, 1418 }, 1419 1420SRST 1421``set_link`` *name* ``[on|off]`` 1422 Switch link *name* on (i.e. up) or off (i.e. down). 1423ERST 1424 1425 { 1426 .name = "watchdog_action", 1427 .args_type = "action:s", 1428 .params = "[reset|shutdown|poweroff|pause|debug|none]", 1429 .help = "change watchdog action", 1430 .cmd = hmp_watchdog_action, 1431 .command_completion = watchdog_action_completion, 1432 }, 1433 1434SRST 1435``watchdog_action`` 1436 Change watchdog action. 1437ERST 1438 1439 { 1440 .name = "acl_show", 1441 .args_type = "aclname:s", 1442 .params = "aclname", 1443 .help = "list rules in the access control list", 1444 .cmd = hmp_acl_show, 1445 }, 1446 1447SRST 1448``acl_show`` *aclname* 1449 List all the matching rules in the access control list, and the default 1450 policy. There are currently two named access control lists, 1451 *vnc.x509dname* and *vnc.username* matching on the x509 client 1452 certificate distinguished name, and SASL username respectively. 1453ERST 1454 1455 { 1456 .name = "acl_policy", 1457 .args_type = "aclname:s,policy:s", 1458 .params = "aclname allow|deny", 1459 .help = "set default access control list policy", 1460 .cmd = hmp_acl_policy, 1461 }, 1462 1463SRST 1464``acl_policy`` *aclname* ``allow|deny`` 1465 Set the default access control list policy, used in the event that 1466 none of the explicit rules match. The default policy at startup is 1467 always ``deny``. 1468ERST 1469 1470 { 1471 .name = "acl_add", 1472 .args_type = "aclname:s,match:s,policy:s,index:i?", 1473 .params = "aclname match allow|deny [index]", 1474 .help = "add a match rule to the access control list", 1475 .cmd = hmp_acl_add, 1476 }, 1477 1478SRST 1479``acl_add`` *aclname* *match* ``allow|deny`` [*index*] 1480 Add a match rule to the access control list, allowing or denying access. 1481 The match will normally be an exact username or x509 distinguished name, 1482 but can optionally include wildcard globs. eg ``*@EXAMPLE.COM`` to 1483 allow all users in the ``EXAMPLE.COM`` kerberos realm. The match will 1484 normally be appended to the end of the ACL, but can be inserted 1485 earlier in the list if the optional *index* parameter is supplied. 1486ERST 1487 1488 { 1489 .name = "acl_remove", 1490 .args_type = "aclname:s,match:s", 1491 .params = "aclname match", 1492 .help = "remove a match rule from the access control list", 1493 .cmd = hmp_acl_remove, 1494 }, 1495 1496SRST 1497``acl_remove`` *aclname* *match* 1498 Remove the specified match rule from the access control list. 1499ERST 1500 1501 { 1502 .name = "acl_reset", 1503 .args_type = "aclname:s", 1504 .params = "aclname", 1505 .help = "reset the access control list", 1506 .cmd = hmp_acl_reset, 1507 }, 1508 1509SRST 1510``acl_reset`` *aclname* 1511 Remove all matches from the access control list, and set the default 1512 policy back to ``deny``. 1513ERST 1514 1515 { 1516 .name = "nbd_server_start", 1517 .args_type = "all:-a,writable:-w,uri:s", 1518 .params = "nbd_server_start [-a] [-w] host:port", 1519 .help = "serve block devices on the given host and port", 1520 .cmd = hmp_nbd_server_start, 1521 }, 1522SRST 1523``nbd_server_start`` *host*:*port* 1524 Start an NBD server on the given host and/or port. If the ``-a`` 1525 option is included, all of the virtual machine's block devices that 1526 have an inserted media on them are automatically exported; in this case, 1527 the ``-w`` option makes the devices writable too. 1528ERST 1529 1530 { 1531 .name = "nbd_server_add", 1532 .args_type = "writable:-w,device:B,name:s?", 1533 .params = "nbd_server_add [-w] device [name]", 1534 .help = "export a block device via NBD", 1535 .cmd = hmp_nbd_server_add, 1536 }, 1537SRST 1538``nbd_server_add`` *device* [ *name* ] 1539 Export a block device through QEMU's NBD server, which must be started 1540 beforehand with ``nbd_server_start``. The ``-w`` option makes the 1541 exported device writable too. The export name is controlled by *name*, 1542 defaulting to *device*. 1543ERST 1544 1545 { 1546 .name = "nbd_server_remove", 1547 .args_type = "force:-f,name:s", 1548 .params = "nbd_server_remove [-f] name", 1549 .help = "remove an export previously exposed via NBD", 1550 .cmd = hmp_nbd_server_remove, 1551 }, 1552SRST 1553``nbd_server_remove [-f]`` *name* 1554 Stop exporting a block device through QEMU's NBD server, which was 1555 previously started with ``nbd_server_add``. The ``-f`` 1556 option forces the server to drop the export immediately even if 1557 clients are connected; otherwise the command fails unless there are no 1558 clients. 1559ERST 1560 1561 { 1562 .name = "nbd_server_stop", 1563 .args_type = "", 1564 .params = "nbd_server_stop", 1565 .help = "stop serving block devices using the NBD protocol", 1566 .cmd = hmp_nbd_server_stop, 1567 }, 1568SRST 1569``nbd_server_stop`` 1570 Stop the QEMU embedded NBD server. 1571ERST 1572 1573 1574#if defined(TARGET_I386) 1575 1576 { 1577 .name = "mce", 1578 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l", 1579 .params = "[-b] cpu bank status mcgstatus addr misc", 1580 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]", 1581 .cmd = hmp_mce, 1582 }, 1583 1584#endif 1585SRST 1586``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc* 1587 Inject an MCE on the given CPU (x86 only). 1588ERST 1589 1590 { 1591 .name = "getfd", 1592 .args_type = "fdname:s", 1593 .params = "getfd name", 1594 .help = "receive a file descriptor via SCM rights and assign it a name", 1595 .cmd = hmp_getfd, 1596 }, 1597 1598SRST 1599``getfd`` *fdname* 1600 If a file descriptor is passed alongside this command using the SCM_RIGHTS 1601 mechanism on unix sockets, it is stored using the name *fdname* for 1602 later use by other monitor commands. 1603ERST 1604 1605 { 1606 .name = "closefd", 1607 .args_type = "fdname:s", 1608 .params = "closefd name", 1609 .help = "close a file descriptor previously passed via SCM rights", 1610 .cmd = hmp_closefd, 1611 }, 1612 1613SRST 1614``closefd`` *fdname* 1615 Close the file descriptor previously assigned to *fdname* using the 1616 ``getfd`` command. This is only needed if the file descriptor was never 1617 used by another monitor command. 1618ERST 1619 1620 { 1621 .name = "block_passwd", 1622 .args_type = "device:B,password:s", 1623 .params = "block_passwd device password", 1624 .help = "set the password of encrypted block devices", 1625 .cmd = hmp_block_passwd, 1626 }, 1627 1628SRST 1629``block_passwd`` *device* *password* 1630 Set the encrypted device *device* password to *password* 1631 1632 This command is now obsolete and will always return an error since 2.10 1633ERST 1634 1635 { 1636 .name = "block_set_io_throttle", 1637 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l", 1638 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr", 1639 .help = "change I/O throttle limits for a block drive", 1640 .cmd = hmp_block_set_io_throttle, 1641 }, 1642 1643SRST 1644``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr* 1645 Change I/O throttle limits for a block drive to 1646 *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*. 1647 *device* can be a block device name, a qdev ID or a QOM path. 1648ERST 1649 1650 { 1651 .name = "set_password", 1652 .args_type = "protocol:s,password:s,connected:s?", 1653 .params = "protocol password action-if-connected", 1654 .help = "set spice/vnc password", 1655 .cmd = hmp_set_password, 1656 }, 1657 1658SRST 1659``set_password [ vnc | spice ] password [ action-if-connected ]`` 1660 Change spice/vnc password. Use zero to make the password stay valid 1661 forever. *action-if-connected* specifies what should happen in 1662 case a connection is established: *fail* makes the password change 1663 fail. *disconnect* changes the password and disconnects the 1664 client. *keep* changes the password and keeps the connection up. 1665 *keep* is the default. 1666ERST 1667 1668 { 1669 .name = "expire_password", 1670 .args_type = "protocol:s,time:s", 1671 .params = "protocol time", 1672 .help = "set spice/vnc password expire-time", 1673 .cmd = hmp_expire_password, 1674 }, 1675 1676SRST 1677``expire_password [ vnc | spice ]`` *expire-time* 1678 Specify when a password for spice/vnc becomes 1679 invalid. *expire-time* accepts: 1680 1681 ``now`` 1682 Invalidate password instantly. 1683 ``never`` 1684 Password stays valid forever. 1685 ``+``\ *nsec* 1686 Password stays valid for *nsec* seconds starting now. 1687 *nsec* 1688 Password is invalidated at the given time. *nsec* are the seconds 1689 passed since 1970, i.e. unix epoch. 1690 1691ERST 1692 1693 { 1694 .name = "chardev-add", 1695 .args_type = "args:s", 1696 .params = "args", 1697 .help = "add chardev", 1698 .cmd = hmp_chardev_add, 1699 .command_completion = chardev_add_completion, 1700 }, 1701 1702SRST 1703``chardev-add`` *args* 1704 chardev-add accepts the same parameters as the -chardev command line switch. 1705ERST 1706 1707 { 1708 .name = "chardev-change", 1709 .args_type = "id:s,args:s", 1710 .params = "id args", 1711 .help = "change chardev", 1712 .cmd = hmp_chardev_change, 1713 }, 1714 1715SRST 1716``chardev-change`` *args* 1717 chardev-change accepts existing chardev *id* and then the same arguments 1718 as the -chardev command line switch (except for "id"). 1719ERST 1720 1721 { 1722 .name = "chardev-remove", 1723 .args_type = "id:s", 1724 .params = "id", 1725 .help = "remove chardev", 1726 .cmd = hmp_chardev_remove, 1727 .command_completion = chardev_remove_completion, 1728 }, 1729 1730SRST 1731``chardev-remove`` *id* 1732 Removes the chardev *id*. 1733ERST 1734 1735 { 1736 .name = "chardev-send-break", 1737 .args_type = "id:s", 1738 .params = "id", 1739 .help = "send a break on chardev", 1740 .cmd = hmp_chardev_send_break, 1741 .command_completion = chardev_remove_completion, 1742 }, 1743 1744SRST 1745``chardev-send-break`` *id* 1746 Send a break on the chardev *id*. 1747ERST 1748 1749 { 1750 .name = "qemu-io", 1751 .args_type = "qdev:-d,device:B,command:s", 1752 .params = "[-d] [device] \"[command]\"", 1753 .help = "run a qemu-io command on a block device\n\t\t\t" 1754 "-d: [device] is a device ID rather than a " 1755 "drive ID or node name", 1756 .cmd = hmp_qemu_io, 1757 }, 1758 1759SRST 1760``qemu-io`` *device* *command* 1761 Executes a qemu-io command on the given block device. 1762ERST 1763 1764 { 1765 .name = "qom-list", 1766 .args_type = "path:s?", 1767 .params = "path", 1768 .help = "list QOM properties", 1769 .cmd = hmp_qom_list, 1770 .flags = "p", 1771 }, 1772 1773SRST 1774``qom-list`` [*path*] 1775 Print QOM properties of object at location *path* 1776ERST 1777 1778 { 1779 .name = "qom-get", 1780 .args_type = "path:s,property:s", 1781 .params = "path property", 1782 .help = "print QOM property", 1783 .cmd = hmp_qom_get, 1784 .flags = "p", 1785 }, 1786 1787SRST 1788``qom-get`` *path* *property* 1789 Print QOM property *property* of object at location *path* 1790ERST 1791 1792 { 1793 .name = "qom-set", 1794 .args_type = "json:-j,path:s,property:s,value:S", 1795 .params = "[-j] path property value", 1796 .help = "set QOM property.\n\t\t\t" 1797 "-j: the value is specified in json format.", 1798 .cmd = hmp_qom_set, 1799 .flags = "p", 1800 }, 1801 1802SRST 1803``qom-set`` *path* *property* *value* 1804 Set QOM property *property* of object at location *path* to value *value* 1805ERST 1806 1807 { 1808 .name = "info", 1809 .args_type = "item:s?", 1810 .params = "[subcommand]", 1811 .help = "show various information about the system state", 1812 .cmd = hmp_info_help, 1813 .sub_table = hmp_info_cmds, 1814 .flags = "p", 1815 }, 1816 1817