1HXCOMM Use DEFHEADING() to define headings in both help text and texi 2HXCOMM Text between STEXI and ETEXI are copied to texi 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 texi and C 7 8STEXI 9@table @option 10ETEXI 11 12 { 13 .name = "help|?", 14 .args_type = "name:S?", 15 .params = "[cmd]", 16 .help = "show the help", 17 .mhandler.cmd = do_help_cmd, 18 }, 19 20STEXI 21@item help or ? [@var{cmd}] 22@findex help 23Show the help for all commands or just for command @var{cmd}. 24ETEXI 25 26 { 27 .name = "commit", 28 .args_type = "device:B", 29 .params = "device|all", 30 .help = "commit changes to the disk images (if -snapshot is used) or backing files", 31 .mhandler.cmd = do_commit, 32 }, 33 34STEXI 35@item commit 36@findex commit 37Commit changes to the disk images (if -snapshot is used) or backing files. 38If the backing file is smaller than the snapshot, then the backing file will be 39resized to be the same size as the snapshot. If the snapshot is smaller than 40the backing file, the backing file will not be truncated. If you want the 41backing file to match the size of the smaller snapshot, you can safely truncate 42it yourself once the commit operation successfully completes. 43ETEXI 44 45 { 46 .name = "q|quit", 47 .args_type = "", 48 .params = "", 49 .help = "quit the emulator", 50 .user_print = monitor_user_noop, 51 .mhandler.cmd = hmp_quit, 52 }, 53 54STEXI 55@item q or quit 56@findex quit 57Quit the emulator. 58ETEXI 59 60 { 61 .name = "block_resize", 62 .args_type = "device:B,size:o", 63 .params = "device size", 64 .help = "resize a block image", 65 .mhandler.cmd = hmp_block_resize, 66 }, 67 68STEXI 69@item block_resize 70@findex block_resize 71Resize a block image while a guest is running. Usually requires guest 72action to see the updated size. Resize to a lower size is supported, 73but should be used with extreme caution. Note that this command only 74resizes image files, it can not resize block devices like LVM volumes. 75ETEXI 76 77 { 78 .name = "block_stream", 79 .args_type = "device:B,speed:o?,base:s?", 80 .params = "device [speed [base]]", 81 .help = "copy data from a backing file into a block device", 82 .mhandler.cmd = hmp_block_stream, 83 }, 84 85STEXI 86@item block_stream 87@findex block_stream 88Copy data from a backing file into a block device. 89ETEXI 90 91 { 92 .name = "block_job_set_speed", 93 .args_type = "device:B,speed:o", 94 .params = "device speed", 95 .help = "set maximum speed for a background block operation", 96 .mhandler.cmd = hmp_block_job_set_speed, 97 }, 98 99STEXI 100@item block_job_set_speed 101@findex block_job_set_speed 102Set maximum speed for a background block operation. 103ETEXI 104 105 { 106 .name = "block_job_cancel", 107 .args_type = "force:-f,device:B", 108 .params = "[-f] device", 109 .help = "stop an active background block operation (use -f" 110 "\n\t\t\t if the operation is currently paused)", 111 .mhandler.cmd = hmp_block_job_cancel, 112 }, 113 114STEXI 115@item block_job_cancel 116@findex block_job_cancel 117Stop an active background block operation (streaming, mirroring). 118ETEXI 119 120 { 121 .name = "block_job_complete", 122 .args_type = "device:B", 123 .params = "device", 124 .help = "stop an active background block operation", 125 .mhandler.cmd = hmp_block_job_complete, 126 }, 127 128STEXI 129@item block_job_complete 130@findex block_job_complete 131Manually trigger completion of an active background block operation. 132For mirroring, this will switch the device to the destination path. 133ETEXI 134 135 { 136 .name = "block_job_pause", 137 .args_type = "device:B", 138 .params = "device", 139 .help = "pause an active background block operation", 140 .mhandler.cmd = hmp_block_job_pause, 141 }, 142 143STEXI 144@item block_job_pause 145@findex block_job_pause 146Pause an active block streaming operation. 147ETEXI 148 149 { 150 .name = "block_job_resume", 151 .args_type = "device:B", 152 .params = "device", 153 .help = "resume a paused background block operation", 154 .mhandler.cmd = hmp_block_job_resume, 155 }, 156 157STEXI 158@item block_job_resume 159@findex block_job_resume 160Resume a paused block streaming operation. 161ETEXI 162 163 { 164 .name = "eject", 165 .args_type = "force:-f,device:B", 166 .params = "[-f] device", 167 .help = "eject a removable medium (use -f to force it)", 168 .mhandler.cmd = hmp_eject, 169 }, 170 171STEXI 172@item eject [-f] @var{device} 173@findex eject 174Eject a removable medium (use -f to force it). 175ETEXI 176 177 { 178 .name = "drive_del", 179 .args_type = "id:B", 180 .params = "device", 181 .help = "remove host block device", 182 .user_print = monitor_user_noop, 183 .mhandler.cmd_new = do_drive_del, 184 }, 185 186STEXI 187@item drive_del @var{device} 188@findex drive_del 189Remove host block device. The result is that guest generated IO is no longer 190submitted against the host device underlying the disk. Once a drive has 191been deleted, the QEMU Block layer returns -EIO which results in IO 192errors in the guest for applications that are reading/writing to the device. 193These errors are always reported to the guest, regardless of the drive's error 194actions (drive options rerror, werror). 195ETEXI 196 197 { 198 .name = "change", 199 .args_type = "device:B,target:F,arg:s?", 200 .params = "device filename [format]", 201 .help = "change a removable medium, optional format", 202 .mhandler.cmd = hmp_change, 203 }, 204 205STEXI 206@item change @var{device} @var{setting} 207@findex change 208 209Change the configuration of a device. 210 211@table @option 212@item change @var{diskdevice} @var{filename} [@var{format}] 213Change the medium for a removable disk device to point to @var{filename}. eg 214 215@example 216(qemu) change ide1-cd0 /path/to/some.iso 217@end example 218 219@var{format} is optional. 220 221@item change vnc @var{display},@var{options} 222Change the configuration of the VNC server. The valid syntax for @var{display} 223and @var{options} are described at @ref{sec_invocation}. eg 224 225@example 226(qemu) change vnc localhost:1 227@end example 228 229@item change vnc password [@var{password}] 230 231Change the password associated with the VNC server. If the new password is not 232supplied, the monitor will prompt for it to be entered. VNC passwords are only 233significant up to 8 letters. eg 234 235@example 236(qemu) change vnc password 237Password: ******** 238@end example 239 240@end table 241ETEXI 242 243 { 244 .name = "screendump", 245 .args_type = "filename:F", 246 .params = "filename", 247 .help = "save screen into PPM image 'filename'", 248 .mhandler.cmd = hmp_screen_dump, 249 }, 250 251STEXI 252@item screendump @var{filename} 253@findex screendump 254Save screen into PPM image @var{filename}. 255ETEXI 256 257 { 258 .name = "logfile", 259 .args_type = "filename:F", 260 .params = "filename", 261 .help = "output logs to 'filename'", 262 .mhandler.cmd = do_logfile, 263 }, 264 265STEXI 266@item logfile @var{filename} 267@findex logfile 268Output logs to @var{filename}. 269ETEXI 270 271 { 272 .name = "trace-event", 273 .args_type = "name:s,option:b", 274 .params = "name on|off", 275 .help = "changes status of a specific trace event", 276 .mhandler.cmd = do_trace_event_set_state, 277 }, 278 279STEXI 280@item trace-event 281@findex trace-event 282changes status of a trace event 283ETEXI 284 285#if defined(CONFIG_TRACE_SIMPLE) 286 { 287 .name = "trace-file", 288 .args_type = "op:s?,arg:F?", 289 .params = "on|off|flush|set [arg]", 290 .help = "open, close, or flush trace file, or set a new file name", 291 .mhandler.cmd = do_trace_file, 292 }, 293 294STEXI 295@item trace-file on|off|flush 296@findex trace-file 297Open, close, or flush the trace file. If no argument is given, the status of the trace file is displayed. 298ETEXI 299#endif 300 301 { 302 .name = "log", 303 .args_type = "items:s", 304 .params = "item1[,...]", 305 .help = "activate logging of the specified items", 306 .mhandler.cmd = do_log, 307 }, 308 309STEXI 310@item log @var{item1}[,...] 311@findex log 312Activate logging of the specified items. 313ETEXI 314 315 { 316 .name = "savevm", 317 .args_type = "name:s?", 318 .params = "[tag|id]", 319 .help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created", 320 .mhandler.cmd = do_savevm, 321 }, 322 323STEXI 324@item savevm [@var{tag}|@var{id}] 325@findex savevm 326Create a snapshot of the whole virtual machine. If @var{tag} is 327provided, it is used as human readable identifier. If there is already 328a snapshot with the same tag or ID, it is replaced. More info at 329@ref{vm_snapshots}. 330ETEXI 331 332 { 333 .name = "loadvm", 334 .args_type = "name:s", 335 .params = "tag|id", 336 .help = "restore a VM snapshot from its tag or id", 337 .mhandler.cmd = do_loadvm, 338 .command_completion = loadvm_completion, 339 }, 340 341STEXI 342@item loadvm @var{tag}|@var{id} 343@findex loadvm 344Set the whole virtual machine to the snapshot identified by the tag 345@var{tag} or the unique snapshot ID @var{id}. 346ETEXI 347 348 { 349 .name = "delvm", 350 .args_type = "name:s", 351 .params = "tag|id", 352 .help = "delete a VM snapshot from its tag or id", 353 .mhandler.cmd = do_delvm, 354 .command_completion = delvm_completion, 355 }, 356 357STEXI 358@item delvm @var{tag}|@var{id} 359@findex delvm 360Delete the snapshot identified by @var{tag} or @var{id}. 361ETEXI 362 363 { 364 .name = "singlestep", 365 .args_type = "option:s?", 366 .params = "[on|off]", 367 .help = "run emulation in singlestep mode or switch to normal mode", 368 .mhandler.cmd = do_singlestep, 369 }, 370 371STEXI 372@item singlestep [off] 373@findex singlestep 374Run the emulation in single step mode. 375If called with option off, the emulation returns to normal mode. 376ETEXI 377 378 { 379 .name = "stop", 380 .args_type = "", 381 .params = "", 382 .help = "stop emulation", 383 .mhandler.cmd = hmp_stop, 384 }, 385 386STEXI 387@item stop 388@findex stop 389Stop emulation. 390ETEXI 391 392 { 393 .name = "c|cont", 394 .args_type = "", 395 .params = "", 396 .help = "resume emulation", 397 .mhandler.cmd = hmp_cont, 398 }, 399 400STEXI 401@item c or cont 402@findex cont 403Resume emulation. 404ETEXI 405 406 { 407 .name = "system_wakeup", 408 .args_type = "", 409 .params = "", 410 .help = "wakeup guest from suspend", 411 .mhandler.cmd = hmp_system_wakeup, 412 }, 413 414STEXI 415@item system_wakeup 416@findex system_wakeup 417Wakeup guest from suspend. 418ETEXI 419 420 { 421 .name = "gdbserver", 422 .args_type = "device:s?", 423 .params = "[device]", 424 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", 425 .mhandler.cmd = do_gdbserver, 426 }, 427 428STEXI 429@item gdbserver [@var{port}] 430@findex gdbserver 431Start gdbserver session (default @var{port}=1234) 432ETEXI 433 434 { 435 .name = "x", 436 .args_type = "fmt:/,addr:l", 437 .params = "/fmt addr", 438 .help = "virtual memory dump starting at 'addr'", 439 .mhandler.cmd = do_memory_dump, 440 }, 441 442STEXI 443@item x/fmt @var{addr} 444@findex x 445Virtual memory dump starting at @var{addr}. 446ETEXI 447 448 { 449 .name = "xp", 450 .args_type = "fmt:/,addr:l", 451 .params = "/fmt addr", 452 .help = "physical memory dump starting at 'addr'", 453 .mhandler.cmd = do_physical_memory_dump, 454 }, 455 456STEXI 457@item xp /@var{fmt} @var{addr} 458@findex xp 459Physical memory dump starting at @var{addr}. 460 461@var{fmt} is a format which tells the command how to format the 462data. Its syntax is: @option{/@{count@}@{format@}@{size@}} 463 464@table @var 465@item count 466is the number of items to be dumped. 467 468@item format 469can be x (hex), d (signed decimal), u (unsigned decimal), o (octal), 470c (char) or i (asm instruction). 471 472@item size 473can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86, 474@code{h} or @code{w} can be specified with the @code{i} format to 475respectively select 16 or 32 bit code instruction size. 476 477@end table 478 479Examples: 480@itemize 481@item 482Dump 10 instructions at the current instruction pointer: 483@example 484(qemu) x/10i $eip 4850x90107063: ret 4860x90107064: sti 4870x90107065: lea 0x0(%esi,1),%esi 4880x90107069: lea 0x0(%edi,1),%edi 4890x90107070: ret 4900x90107071: jmp 0x90107080 4910x90107073: nop 4920x90107074: nop 4930x90107075: nop 4940x90107076: nop 495@end example 496 497@item 498Dump 80 16 bit values at the start of the video memory. 499@smallexample 500(qemu) xp/80hx 0xb8000 5010x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42 5020x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41 5030x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72 5040x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73 5050x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20 5060x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720 5070x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5080x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5090x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5100x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 511@end smallexample 512@end itemize 513ETEXI 514 515 { 516 .name = "p|print", 517 .args_type = "fmt:/,val:l", 518 .params = "/fmt expr", 519 .help = "print expression value (use $reg for CPU register access)", 520 .mhandler.cmd = do_print, 521 }, 522 523STEXI 524@item p or print/@var{fmt} @var{expr} 525@findex print 526 527Print expression value. Only the @var{format} part of @var{fmt} is 528used. 529ETEXI 530 531 { 532 .name = "i", 533 .args_type = "fmt:/,addr:i,index:i.", 534 .params = "/fmt addr", 535 .help = "I/O port read", 536 .mhandler.cmd = do_ioport_read, 537 }, 538 539STEXI 540Read I/O port. 541ETEXI 542 543 { 544 .name = "o", 545 .args_type = "fmt:/,addr:i,val:i", 546 .params = "/fmt addr value", 547 .help = "I/O port write", 548 .mhandler.cmd = do_ioport_write, 549 }, 550 551STEXI 552Write to I/O port. 553ETEXI 554 555 { 556 .name = "sendkey", 557 .args_type = "keys:s,hold-time:i?", 558 .params = "keys [hold_ms]", 559 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)", 560 .mhandler.cmd = hmp_send_key, 561 .command_completion = sendkey_completion, 562 }, 563 564STEXI 565@item sendkey @var{keys} 566@findex sendkey 567 568Send @var{keys} to the guest. @var{keys} could be the name of the 569key or the raw value in hexadecimal format. Use @code{-} to press 570several keys simultaneously. Example: 571@example 572sendkey ctrl-alt-f1 573@end example 574 575This command is useful to send keys that your graphical user interface 576intercepts at low level, such as @code{ctrl-alt-f1} in X Window. 577ETEXI 578 579 { 580 .name = "system_reset", 581 .args_type = "", 582 .params = "", 583 .help = "reset the system", 584 .mhandler.cmd = hmp_system_reset, 585 }, 586 587STEXI 588@item system_reset 589@findex system_reset 590 591Reset the system. 592ETEXI 593 594 { 595 .name = "system_powerdown", 596 .args_type = "", 597 .params = "", 598 .help = "send system power down event", 599 .mhandler.cmd = hmp_system_powerdown, 600 }, 601 602STEXI 603@item system_powerdown 604@findex system_powerdown 605 606Power down the system (if supported). 607ETEXI 608 609 { 610 .name = "sum", 611 .args_type = "start:i,size:i", 612 .params = "addr size", 613 .help = "compute the checksum of a memory region", 614 .mhandler.cmd = do_sum, 615 }, 616 617STEXI 618@item sum @var{addr} @var{size} 619@findex sum 620 621Compute the checksum of a memory region. 622ETEXI 623 624 { 625 .name = "usb_add", 626 .args_type = "devname:s", 627 .params = "device", 628 .help = "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')", 629 .mhandler.cmd = do_usb_add, 630 }, 631 632STEXI 633@item usb_add @var{devname} 634@findex usb_add 635 636Add the USB device @var{devname}. For details of available devices see 637@ref{usb_devices} 638ETEXI 639 640 { 641 .name = "usb_del", 642 .args_type = "devname:s", 643 .params = "device", 644 .help = "remove USB device 'bus.addr'", 645 .mhandler.cmd = do_usb_del, 646 }, 647 648STEXI 649@item usb_del @var{devname} 650@findex usb_del 651 652Remove the USB device @var{devname} from the QEMU virtual USB 653hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor 654command @code{info usb} to see the devices you can remove. 655ETEXI 656 657 { 658 .name = "device_add", 659 .args_type = "device:O", 660 .params = "driver[,prop=value][,...]", 661 .help = "add device, like -device on the command line", 662 .user_print = monitor_user_noop, 663 .mhandler.cmd_new = do_device_add, 664 .command_completion = device_add_completion, 665 }, 666 667STEXI 668@item device_add @var{config} 669@findex device_add 670 671Add device. 672ETEXI 673 674 { 675 .name = "device_del", 676 .args_type = "id:s", 677 .params = "device", 678 .help = "remove device", 679 .mhandler.cmd = hmp_device_del, 680 .command_completion = device_del_completion, 681 }, 682 683STEXI 684@item device_del @var{id} 685@findex device_del 686 687Remove device @var{id}. 688ETEXI 689 690 { 691 .name = "cpu", 692 .args_type = "index:i", 693 .params = "index", 694 .help = "set the default CPU", 695 .mhandler.cmd = hmp_cpu, 696 }, 697 698STEXI 699@item cpu @var{index} 700@findex cpu 701Set the default CPU. 702ETEXI 703 704 { 705 .name = "mouse_move", 706 .args_type = "dx_str:s,dy_str:s,dz_str:s?", 707 .params = "dx dy [dz]", 708 .help = "send mouse move events", 709 .mhandler.cmd = do_mouse_move, 710 }, 711 712STEXI 713@item mouse_move @var{dx} @var{dy} [@var{dz}] 714@findex mouse_move 715Move the active mouse to the specified coordinates @var{dx} @var{dy} 716with optional scroll axis @var{dz}. 717ETEXI 718 719 { 720 .name = "mouse_button", 721 .args_type = "button_state:i", 722 .params = "state", 723 .help = "change mouse button state (1=L, 2=M, 4=R)", 724 .mhandler.cmd = do_mouse_button, 725 }, 726 727STEXI 728@item mouse_button @var{val} 729@findex mouse_button 730Change the active mouse button state @var{val} (1=L, 2=M, 4=R). 731ETEXI 732 733 { 734 .name = "mouse_set", 735 .args_type = "index:i", 736 .params = "index", 737 .help = "set which mouse device receives events", 738 .mhandler.cmd = do_mouse_set, 739 }, 740 741STEXI 742@item mouse_set @var{index} 743@findex mouse_set 744Set which mouse device receives events at given @var{index}, index 745can be obtained with 746@example 747info mice 748@end example 749ETEXI 750 751 { 752 .name = "wavcapture", 753 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?", 754 .params = "path [frequency [bits [channels]]]", 755 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)", 756 .mhandler.cmd = do_wav_capture, 757 }, 758STEXI 759@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]] 760@findex wavcapture 761Capture audio into @var{filename}. Using sample rate @var{frequency} 762bits per sample @var{bits} and number of channels @var{channels}. 763 764Defaults: 765@itemize @minus 766@item Sample rate = 44100 Hz - CD quality 767@item Bits = 16 768@item Number of channels = 2 - Stereo 769@end itemize 770ETEXI 771 772 { 773 .name = "stopcapture", 774 .args_type = "n:i", 775 .params = "capture index", 776 .help = "stop capture", 777 .mhandler.cmd = do_stop_capture, 778 }, 779STEXI 780@item stopcapture @var{index} 781@findex stopcapture 782Stop capture with a given @var{index}, index can be obtained with 783@example 784info capture 785@end example 786ETEXI 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 .mhandler.cmd = hmp_memsave, 794 }, 795 796STEXI 797@item memsave @var{addr} @var{size} @var{file} 798@findex memsave 799save to disk virtual memory dump starting at @var{addr} of size @var{size}. 800ETEXI 801 802 { 803 .name = "pmemsave", 804 .args_type = "val:l,size:i,filename:s", 805 .params = "addr size file", 806 .help = "save to disk physical memory dump starting at 'addr' of size 'size'", 807 .mhandler.cmd = hmp_pmemsave, 808 }, 809 810STEXI 811@item pmemsave @var{addr} @var{size} @var{file} 812@findex pmemsave 813save to disk physical memory dump starting at @var{addr} of size @var{size}. 814ETEXI 815 816 { 817 .name = "boot_set", 818 .args_type = "bootdevice:s", 819 .params = "bootdevice", 820 .help = "define new values for the boot device list", 821 .mhandler.cmd = do_boot_set, 822 }, 823 824STEXI 825@item boot_set @var{bootdevicelist} 826@findex boot_set 827 828Define new values for the boot device list. Those values will override 829the values specified on the command line through the @code{-boot} option. 830 831The values that can be specified here depend on the machine type, but are 832the same that can be specified in the @code{-boot} command line option. 833ETEXI 834 835#if defined(TARGET_I386) || defined(TARGET_S390X) 836 { 837 .name = "nmi", 838 .args_type = "", 839 .params = "", 840 .help = "inject an NMI on all guest's CPUs", 841 .mhandler.cmd = hmp_inject_nmi, 842 }, 843#endif 844STEXI 845@item nmi @var{cpu} 846@findex nmi 847Inject an NMI (x86) or RESTART (s390x) on the given CPU. 848 849ETEXI 850 851 { 852 .name = "ringbuf_write", 853 .args_type = "device:s,data:s", 854 .params = "device data", 855 .help = "Write to a ring buffer character device", 856 .mhandler.cmd = hmp_ringbuf_write, 857 .command_completion = ringbuf_write_completion, 858 }, 859 860STEXI 861@item ringbuf_write @var{device} @var{data} 862@findex ringbuf_write 863Write @var{data} to ring buffer character device @var{device}. 864@var{data} must be a UTF-8 string. 865 866ETEXI 867 868 { 869 .name = "ringbuf_read", 870 .args_type = "device:s,size:i", 871 .params = "device size", 872 .help = "Read from a ring buffer character device", 873 .mhandler.cmd = hmp_ringbuf_read, 874 .command_completion = ringbuf_write_completion, 875 }, 876 877STEXI 878@item ringbuf_read @var{device} 879@findex ringbuf_read 880Read and print up to @var{size} bytes from ring buffer character 881device @var{device}. 882Certain non-printable characters are printed \uXXXX, where XXXX is the 883character code in hexadecimal. Character \ is printed \\. 884Bug: can screw up when the buffer contains invalid UTF-8 sequences, 885NUL characters, after the ring buffer lost data, and when reading 886stops because the size limit is reached. 887 888ETEXI 889 890 { 891 .name = "migrate", 892 .args_type = "detach:-d,blk:-b,inc:-i,uri:s", 893 .params = "[-d] [-b] [-i] uri", 894 .help = "migrate to URI (using -d to not wait for completion)" 895 "\n\t\t\t -b for migration without shared storage with" 896 " full copy of disk\n\t\t\t -i for migration without " 897 "shared storage with incremental copy of disk " 898 "(base image shared between src and destination)", 899 .mhandler.cmd = hmp_migrate, 900 }, 901 902 903STEXI 904@item migrate [-d] [-b] [-i] @var{uri} 905@findex migrate 906Migrate to @var{uri} (using -d to not wait for completion). 907 -b for migration with full copy of disk 908 -i for migration with incremental copy of disk (base image is shared) 909ETEXI 910 911 { 912 .name = "migrate_cancel", 913 .args_type = "", 914 .params = "", 915 .help = "cancel the current VM migration", 916 .mhandler.cmd = hmp_migrate_cancel, 917 }, 918 919STEXI 920@item migrate_cancel 921@findex migrate_cancel 922Cancel the current VM migration. 923 924ETEXI 925 926 { 927 .name = "migrate_set_cache_size", 928 .args_type = "value:o", 929 .params = "value", 930 .help = "set cache size (in bytes) for XBZRLE migrations," 931 "the cache size will be rounded down to the nearest " 932 "power of 2.\n" 933 "The cache size affects the number of cache misses." 934 "In case of a high cache miss ratio you need to increase" 935 " the cache size", 936 .mhandler.cmd = hmp_migrate_set_cache_size, 937 }, 938 939STEXI 940@item migrate_set_cache_size @var{value} 941@findex migrate_set_cache_size 942Set cache size to @var{value} (in bytes) for xbzrle migrations. 943ETEXI 944 945 { 946 .name = "migrate_set_speed", 947 .args_type = "value:o", 948 .params = "value", 949 .help = "set maximum speed (in bytes) for migrations. " 950 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T", 951 .mhandler.cmd = hmp_migrate_set_speed, 952 }, 953 954STEXI 955@item migrate_set_speed @var{value} 956@findex migrate_set_speed 957Set maximum speed to @var{value} (in bytes) for migrations. 958ETEXI 959 960 { 961 .name = "migrate_set_downtime", 962 .args_type = "value:T", 963 .params = "value", 964 .help = "set maximum tolerated downtime (in seconds) for migrations", 965 .mhandler.cmd = hmp_migrate_set_downtime, 966 }, 967 968STEXI 969@item migrate_set_downtime @var{second} 970@findex migrate_set_downtime 971Set maximum tolerated downtime (in seconds) for migration. 972ETEXI 973 974 { 975 .name = "migrate_set_capability", 976 .args_type = "capability:s,state:b", 977 .params = "capability state", 978 .help = "Enable/Disable the usage of a capability for migration", 979 .mhandler.cmd = hmp_migrate_set_capability, 980 .command_completion = migrate_set_capability_completion, 981 }, 982 983STEXI 984@item migrate_set_capability @var{capability} @var{state} 985@findex migrate_set_capability 986Enable/Disable the usage of a capability @var{capability} for migration. 987ETEXI 988 989 { 990 .name = "client_migrate_info", 991 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", 992 .params = "protocol hostname port tls-port cert-subject", 993 .help = "send migration info to spice/vnc client", 994 .user_print = monitor_user_noop, 995 .mhandler.cmd_async = client_migrate_info, 996 .flags = MONITOR_CMD_ASYNC, 997 }, 998 999STEXI 1000@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject} 1001@findex client_migrate_info 1002Set the spice/vnc connection info for the migration target. The spice/vnc 1003server will ask the spice/vnc client to automatically reconnect using the 1004new parameters (if specified) once the vm migration finished successfully. 1005ETEXI 1006 1007 { 1008 .name = "dump-guest-memory", 1009 .args_type = "paging:-p,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:i?,length:i?", 1010 .params = "[-p] [-z|-l|-s] filename [begin length]", 1011 .help = "dump guest memory into file 'filename'.\n\t\t\t" 1012 "-p: do paging to get guest's memory mapping.\n\t\t\t" 1013 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t" 1014 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t" 1015 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t" 1016 "begin: the starting physical address.\n\t\t\t" 1017 "length: the memory size, in bytes.", 1018 .mhandler.cmd = hmp_dump_guest_memory, 1019 }, 1020 1021 1022STEXI 1023@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length} 1024@item dump-guest-memory [-z|-l|-s] @var{filename} 1025@findex dump-guest-memory 1026Dump guest memory to @var{protocol}. The file can be processed with crash or 1027gdb. Without -z|-l|-s, the dump format is ELF. 1028 -p: do paging to get guest's memory mapping. 1029 -z: dump in kdump-compressed format, with zlib compression. 1030 -l: dump in kdump-compressed format, with lzo compression. 1031 -s: dump in kdump-compressed format, with snappy compression. 1032 filename: dump file name. 1033 begin: the starting physical address. It's optional, and should be 1034 specified together with length. 1035 length: the memory size, in bytes. It's optional, and should be specified 1036 together with begin. 1037ETEXI 1038 1039 { 1040 .name = "snapshot_blkdev", 1041 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?", 1042 .params = "[-n] device [new-image-file] [format]", 1043 .help = "initiates a live snapshot\n\t\t\t" 1044 "of device. If a new image file is specified, the\n\t\t\t" 1045 "new image file will become the new root image.\n\t\t\t" 1046 "If format is specified, the snapshot file will\n\t\t\t" 1047 "be created in that format.\n\t\t\t" 1048 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t" 1049 "to reuse the image found in new-image-file, instead of\n\t\t\t" 1050 "recreating it from scratch.", 1051 .mhandler.cmd = hmp_snapshot_blkdev, 1052 }, 1053 1054STEXI 1055@item snapshot_blkdev 1056@findex snapshot_blkdev 1057Snapshot device, using snapshot file as target if provided 1058ETEXI 1059 1060 { 1061 .name = "snapshot_blkdev_internal", 1062 .args_type = "device:B,name:s", 1063 .params = "device name", 1064 .help = "take an internal snapshot of device.\n\t\t\t" 1065 "The format of the image used by device must\n\t\t\t" 1066 "support it, such as qcow2.\n\t\t\t", 1067 .mhandler.cmd = hmp_snapshot_blkdev_internal, 1068 }, 1069 1070STEXI 1071@item snapshot_blkdev_internal 1072@findex snapshot_blkdev_internal 1073Take an internal snapshot on device if it support 1074ETEXI 1075 1076 { 1077 .name = "snapshot_delete_blkdev_internal", 1078 .args_type = "device:B,name:s,id:s?", 1079 .params = "device name [id]", 1080 .help = "delete an internal snapshot of device.\n\t\t\t" 1081 "If id is specified, qemu will try delete\n\t\t\t" 1082 "the snapshot matching both id and name.\n\t\t\t" 1083 "The format of the image used by device must\n\t\t\t" 1084 "support it, such as qcow2.\n\t\t\t", 1085 .mhandler.cmd = hmp_snapshot_delete_blkdev_internal, 1086 }, 1087 1088STEXI 1089@item snapshot_delete_blkdev_internal 1090@findex snapshot_delete_blkdev_internal 1091Delete an internal snapshot on device if it support 1092ETEXI 1093 1094 { 1095 .name = "drive_mirror", 1096 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?", 1097 .params = "[-n] [-f] device target [format]", 1098 .help = "initiates live storage\n\t\t\t" 1099 "migration for a device. The device's contents are\n\t\t\t" 1100 "copied to the new image file, including data that\n\t\t\t" 1101 "is written after the command is started.\n\t\t\t" 1102 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1103 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1104 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1105 "so that the result does not need a backing file.\n\t\t\t", 1106 .mhandler.cmd = hmp_drive_mirror, 1107 }, 1108STEXI 1109@item drive_mirror 1110@findex drive_mirror 1111Start mirroring a block device's writes to a new destination, 1112using the specified target. 1113ETEXI 1114 1115 { 1116 .name = "drive_backup", 1117 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?", 1118 .params = "[-n] [-f] device target [format]", 1119 .help = "initiates a point-in-time\n\t\t\t" 1120 "copy for a device. The device's contents are\n\t\t\t" 1121 "copied to the new image file, excluding data that\n\t\t\t" 1122 "is written after the command is started.\n\t\t\t" 1123 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1124 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1125 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1126 "so that the result does not need a backing file.\n\t\t\t", 1127 .mhandler.cmd = hmp_drive_backup, 1128 }, 1129STEXI 1130@item drive_backup 1131@findex drive_backup 1132Start a point-in-time copy of a block device to a specificed target. 1133ETEXI 1134 1135 { 1136 .name = "drive_add", 1137 .args_type = "pci_addr:s,opts:s", 1138 .params = "[[<domain>:]<bus>:]<slot>\n" 1139 "[file=file][,if=type][,bus=n]\n" 1140 "[,unit=m][,media=d][,index=i]\n" 1141 "[,cyls=c,heads=h,secs=s[,trans=t]]\n" 1142 "[,snapshot=on|off][,cache=on|off]\n" 1143 "[,readonly=on|off][,copy-on-read=on|off]", 1144 .help = "add drive to PCI storage controller", 1145 .mhandler.cmd = drive_hot_add, 1146 }, 1147 1148STEXI 1149@item drive_add 1150@findex drive_add 1151Add drive to PCI storage controller. 1152ETEXI 1153 1154#if defined(CONFIG_PCI_HOTPLUG_OLD) 1155 { 1156 .name = "pci_add", 1157 .args_type = "pci_addr:s,type:s,opts:s?", 1158 .params = "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...", 1159 .help = "hot-add PCI device", 1160 .mhandler.cmd = pci_device_hot_add, 1161 }, 1162#endif 1163 1164STEXI 1165@item pci_add 1166@findex pci_add 1167Hot-add PCI device. 1168ETEXI 1169 1170#if defined(CONFIG_PCI_HOTPLUG_OLD) 1171 { 1172 .name = "pci_del", 1173 .args_type = "pci_addr:s", 1174 .params = "[[<domain>:]<bus>:]<slot>", 1175 .help = "hot remove PCI device", 1176 .mhandler.cmd = do_pci_device_hot_remove, 1177 }, 1178#endif 1179 1180STEXI 1181@item pci_del 1182@findex pci_del 1183Hot remove PCI device. 1184ETEXI 1185 1186 { 1187 .name = "pcie_aer_inject_error", 1188 .args_type = "advisory_non_fatal:-a,correctable:-c," 1189 "id:s,error_status:s," 1190 "header0:i?,header1:i?,header2:i?,header3:i?," 1191 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?", 1192 .params = "[-a] [-c] id " 1193 "<error_status> [<tlp header> [<tlp header prefix>]]", 1194 .help = "inject pcie aer error\n\t\t\t" 1195 " -a for advisory non fatal error\n\t\t\t" 1196 " -c for correctable error\n\t\t\t" 1197 "<id> = qdev device id\n\t\t\t" 1198 "<error_status> = error string or 32bit\n\t\t\t" 1199 "<tlb header> = 32bit x 4\n\t\t\t" 1200 "<tlb header prefix> = 32bit x 4", 1201 .user_print = pcie_aer_inject_error_print, 1202 .mhandler.cmd_new = do_pcie_aer_inject_error, 1203 }, 1204 1205STEXI 1206@item pcie_aer_inject_error 1207@findex pcie_aer_inject_error 1208Inject PCIe AER error 1209ETEXI 1210 1211 { 1212 .name = "host_net_add", 1213 .args_type = "device:s,opts:s?", 1214 .params = "tap|user|socket|vde|netmap|bridge|dump [options]", 1215 .help = "add host VLAN client", 1216 .mhandler.cmd = net_host_device_add, 1217 .command_completion = host_net_add_completion, 1218 }, 1219 1220STEXI 1221@item host_net_add 1222@findex host_net_add 1223Add host VLAN client. 1224ETEXI 1225 1226 { 1227 .name = "host_net_remove", 1228 .args_type = "vlan_id:i,device:s", 1229 .params = "vlan_id name", 1230 .help = "remove host VLAN client", 1231 .mhandler.cmd = net_host_device_remove, 1232 .command_completion = host_net_remove_completion, 1233 }, 1234 1235STEXI 1236@item host_net_remove 1237@findex host_net_remove 1238Remove host VLAN client. 1239ETEXI 1240 1241 { 1242 .name = "netdev_add", 1243 .args_type = "netdev:O", 1244 .params = "[user|tap|socket|vde|bridge|hubport|netmap],id=str[,prop=value][,...]", 1245 .help = "add host network device", 1246 .mhandler.cmd = hmp_netdev_add, 1247 .command_completion = netdev_add_completion, 1248 }, 1249 1250STEXI 1251@item netdev_add 1252@findex netdev_add 1253Add host network device. 1254ETEXI 1255 1256 { 1257 .name = "netdev_del", 1258 .args_type = "id:s", 1259 .params = "id", 1260 .help = "remove host network device", 1261 .mhandler.cmd = hmp_netdev_del, 1262 .command_completion = netdev_del_completion, 1263 }, 1264 1265STEXI 1266@item netdev_del 1267@findex netdev_del 1268Remove host network device. 1269ETEXI 1270 1271 { 1272 .name = "object_add", 1273 .args_type = "object:O", 1274 .params = "[qom-type=]type,id=str[,prop=value][,...]", 1275 .help = "create QOM object", 1276 .mhandler.cmd = hmp_object_add, 1277 .command_completion = object_add_completion, 1278 }, 1279 1280STEXI 1281@item object_add 1282@findex object_add 1283Create QOM object. 1284ETEXI 1285 1286 { 1287 .name = "object_del", 1288 .args_type = "id:s", 1289 .params = "id", 1290 .help = "destroy QOM object", 1291 .mhandler.cmd = hmp_object_del, 1292 .command_completion = object_del_completion, 1293 }, 1294 1295STEXI 1296@item object_del 1297@findex object_del 1298Destroy QOM object. 1299ETEXI 1300 1301#ifdef CONFIG_SLIRP 1302 { 1303 .name = "hostfwd_add", 1304 .args_type = "arg1:s,arg2:s?,arg3:s?", 1305 .params = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport", 1306 .help = "redirect TCP or UDP connections from host to guest (requires -net user)", 1307 .mhandler.cmd = net_slirp_hostfwd_add, 1308 }, 1309#endif 1310STEXI 1311@item hostfwd_add 1312@findex hostfwd_add 1313Redirect TCP or UDP connections from host to guest (requires -net user). 1314ETEXI 1315 1316#ifdef CONFIG_SLIRP 1317 { 1318 .name = "hostfwd_remove", 1319 .args_type = "arg1:s,arg2:s?,arg3:s?", 1320 .params = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport", 1321 .help = "remove host-to-guest TCP or UDP redirection", 1322 .mhandler.cmd = net_slirp_hostfwd_remove, 1323 }, 1324 1325#endif 1326STEXI 1327@item hostfwd_remove 1328@findex hostfwd_remove 1329Remove host-to-guest TCP or UDP redirection. 1330ETEXI 1331 1332 { 1333 .name = "balloon", 1334 .args_type = "value:M", 1335 .params = "target", 1336 .help = "request VM to change its memory allocation (in MB)", 1337 .mhandler.cmd = hmp_balloon, 1338 }, 1339 1340STEXI 1341@item balloon @var{value} 1342@findex balloon 1343Request VM to change its memory allocation to @var{value} (in MB). 1344ETEXI 1345 1346 { 1347 .name = "set_link", 1348 .args_type = "name:s,up:b", 1349 .params = "name on|off", 1350 .help = "change the link status of a network adapter", 1351 .mhandler.cmd = hmp_set_link, 1352 .command_completion = set_link_completion, 1353 }, 1354 1355STEXI 1356@item set_link @var{name} [on|off] 1357@findex set_link 1358Switch link @var{name} on (i.e. up) or off (i.e. down). 1359ETEXI 1360 1361 { 1362 .name = "watchdog_action", 1363 .args_type = "action:s", 1364 .params = "[reset|shutdown|poweroff|pause|debug|none]", 1365 .help = "change watchdog action", 1366 .mhandler.cmd = do_watchdog_action, 1367 .command_completion = watchdog_action_completion, 1368 }, 1369 1370STEXI 1371@item watchdog_action 1372@findex watchdog_action 1373Change watchdog action. 1374ETEXI 1375 1376 { 1377 .name = "acl_show", 1378 .args_type = "aclname:s", 1379 .params = "aclname", 1380 .help = "list rules in the access control list", 1381 .mhandler.cmd = do_acl_show, 1382 }, 1383 1384STEXI 1385@item acl_show @var{aclname} 1386@findex acl_show 1387List all the matching rules in the access control list, and the default 1388policy. There are currently two named access control lists, 1389@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client 1390certificate distinguished name, and SASL username respectively. 1391ETEXI 1392 1393 { 1394 .name = "acl_policy", 1395 .args_type = "aclname:s,policy:s", 1396 .params = "aclname allow|deny", 1397 .help = "set default access control list policy", 1398 .mhandler.cmd = do_acl_policy, 1399 }, 1400 1401STEXI 1402@item acl_policy @var{aclname} @code{allow|deny} 1403@findex acl_policy 1404Set the default access control list policy, used in the event that 1405none of the explicit rules match. The default policy at startup is 1406always @code{deny}. 1407ETEXI 1408 1409 { 1410 .name = "acl_add", 1411 .args_type = "aclname:s,match:s,policy:s,index:i?", 1412 .params = "aclname match allow|deny [index]", 1413 .help = "add a match rule to the access control list", 1414 .mhandler.cmd = do_acl_add, 1415 }, 1416 1417STEXI 1418@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}] 1419@findex acl_add 1420Add a match rule to the access control list, allowing or denying access. 1421The match will normally be an exact username or x509 distinguished name, 1422but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to 1423allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will 1424normally be appended to the end of the ACL, but can be inserted 1425earlier in the list if the optional @var{index} parameter is supplied. 1426ETEXI 1427 1428 { 1429 .name = "acl_remove", 1430 .args_type = "aclname:s,match:s", 1431 .params = "aclname match", 1432 .help = "remove a match rule from the access control list", 1433 .mhandler.cmd = do_acl_remove, 1434 }, 1435 1436STEXI 1437@item acl_remove @var{aclname} @var{match} 1438@findex acl_remove 1439Remove the specified match rule from the access control list. 1440ETEXI 1441 1442 { 1443 .name = "acl_reset", 1444 .args_type = "aclname:s", 1445 .params = "aclname", 1446 .help = "reset the access control list", 1447 .mhandler.cmd = do_acl_reset, 1448 }, 1449 1450STEXI 1451@item acl_reset @var{aclname} 1452@findex acl_reset 1453Remove all matches from the access control list, and set the default 1454policy back to @code{deny}. 1455ETEXI 1456 1457 { 1458 .name = "nbd_server_start", 1459 .args_type = "all:-a,writable:-w,uri:s", 1460 .params = "nbd_server_start [-a] [-w] host:port", 1461 .help = "serve block devices on the given host and port", 1462 .mhandler.cmd = hmp_nbd_server_start, 1463 }, 1464STEXI 1465@item nbd_server_start @var{host}:@var{port} 1466@findex nbd_server_start 1467Start an NBD server on the given host and/or port. If the @option{-a} 1468option is included, all of the virtual machine's block devices that 1469have an inserted media on them are automatically exported; in this case, 1470the @option{-w} option makes the devices writable too. 1471ETEXI 1472 1473 { 1474 .name = "nbd_server_add", 1475 .args_type = "writable:-w,device:B", 1476 .params = "nbd_server_add [-w] device", 1477 .help = "export a block device via NBD", 1478 .mhandler.cmd = hmp_nbd_server_add, 1479 }, 1480STEXI 1481@item nbd_server_add @var{device} 1482@findex nbd_server_add 1483Export a block device through QEMU's NBD server, which must be started 1484beforehand with @command{nbd_server_start}. The @option{-w} option makes the 1485exported device writable too. 1486ETEXI 1487 1488 { 1489 .name = "nbd_server_stop", 1490 .args_type = "", 1491 .params = "nbd_server_stop", 1492 .help = "stop serving block devices using the NBD protocol", 1493 .mhandler.cmd = hmp_nbd_server_stop, 1494 }, 1495STEXI 1496@item nbd_server_stop 1497@findex nbd_server_stop 1498Stop the QEMU embedded NBD server. 1499ETEXI 1500 1501 1502#if defined(TARGET_I386) 1503 1504 { 1505 .name = "mce", 1506 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l", 1507 .params = "[-b] cpu bank status mcgstatus addr misc", 1508 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]", 1509 .mhandler.cmd = do_inject_mce, 1510 }, 1511 1512#endif 1513STEXI 1514@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc} 1515@findex mce (x86) 1516Inject an MCE on the given CPU (x86 only). 1517ETEXI 1518 1519 { 1520 .name = "getfd", 1521 .args_type = "fdname:s", 1522 .params = "getfd name", 1523 .help = "receive a file descriptor via SCM rights and assign it a name", 1524 .mhandler.cmd = hmp_getfd, 1525 }, 1526 1527STEXI 1528@item getfd @var{fdname} 1529@findex getfd 1530If a file descriptor is passed alongside this command using the SCM_RIGHTS 1531mechanism on unix sockets, it is stored using the name @var{fdname} for 1532later use by other monitor commands. 1533ETEXI 1534 1535 { 1536 .name = "closefd", 1537 .args_type = "fdname:s", 1538 .params = "closefd name", 1539 .help = "close a file descriptor previously passed via SCM rights", 1540 .mhandler.cmd = hmp_closefd, 1541 }, 1542 1543STEXI 1544@item closefd @var{fdname} 1545@findex closefd 1546Close the file descriptor previously assigned to @var{fdname} using the 1547@code{getfd} command. This is only needed if the file descriptor was never 1548used by another monitor command. 1549ETEXI 1550 1551 { 1552 .name = "block_passwd", 1553 .args_type = "device:B,password:s", 1554 .params = "block_passwd device password", 1555 .help = "set the password of encrypted block devices", 1556 .mhandler.cmd = hmp_block_passwd, 1557 }, 1558 1559STEXI 1560@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr} 1561@findex block_set_io_throttle 1562Change I/O throttle limits for a block drive to @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr} 1563ETEXI 1564 1565 { 1566 .name = "block_set_io_throttle", 1567 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l", 1568 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr", 1569 .help = "change I/O throttle limits for a block drive", 1570 .mhandler.cmd = hmp_block_set_io_throttle, 1571 }, 1572 1573STEXI 1574@item block_passwd @var{device} @var{password} 1575@findex block_passwd 1576Set the encrypted device @var{device} password to @var{password} 1577ETEXI 1578 1579 { 1580 .name = "set_password", 1581 .args_type = "protocol:s,password:s,connected:s?", 1582 .params = "protocol password action-if-connected", 1583 .help = "set spice/vnc password", 1584 .mhandler.cmd = hmp_set_password, 1585 }, 1586 1587STEXI 1588@item set_password [ vnc | spice ] password [ action-if-connected ] 1589@findex set_password 1590 1591Change spice/vnc password. Use zero to make the password stay valid 1592forever. @var{action-if-connected} specifies what should happen in 1593case a connection is established: @var{fail} makes the password change 1594fail. @var{disconnect} changes the password and disconnects the 1595client. @var{keep} changes the password and keeps the connection up. 1596@var{keep} is the default. 1597ETEXI 1598 1599 { 1600 .name = "expire_password", 1601 .args_type = "protocol:s,time:s", 1602 .params = "protocol time", 1603 .help = "set spice/vnc password expire-time", 1604 .mhandler.cmd = hmp_expire_password, 1605 }, 1606 1607STEXI 1608@item expire_password [ vnc | spice ] expire-time 1609@findex expire_password 1610 1611Specify when a password for spice/vnc becomes 1612invalid. @var{expire-time} accepts: 1613 1614@table @var 1615@item now 1616Invalidate password instantly. 1617 1618@item never 1619Password stays valid forever. 1620 1621@item +nsec 1622Password stays valid for @var{nsec} seconds starting now. 1623 1624@item nsec 1625Password is invalidated at the given time. @var{nsec} are the seconds 1626passed since 1970, i.e. unix epoch. 1627 1628@end table 1629ETEXI 1630 1631 { 1632 .name = "chardev-add", 1633 .args_type = "args:s", 1634 .params = "args", 1635 .help = "add chardev", 1636 .mhandler.cmd = hmp_chardev_add, 1637 .command_completion = chardev_add_completion, 1638 }, 1639 1640STEXI 1641@item chardev_add args 1642@findex chardev_add 1643 1644chardev_add accepts the same parameters as the -chardev command line switch. 1645 1646ETEXI 1647 1648 { 1649 .name = "chardev-remove", 1650 .args_type = "id:s", 1651 .params = "id", 1652 .help = "remove chardev", 1653 .mhandler.cmd = hmp_chardev_remove, 1654 .command_completion = chardev_remove_completion, 1655 }, 1656 1657STEXI 1658@item chardev_remove id 1659@findex chardev_remove 1660 1661Removes the chardev @var{id}. 1662 1663ETEXI 1664 1665 { 1666 .name = "qemu-io", 1667 .args_type = "device:B,command:s", 1668 .params = "[device] \"[command]\"", 1669 .help = "run a qemu-io command on a block device", 1670 .mhandler.cmd = hmp_qemu_io, 1671 }, 1672 1673STEXI 1674@item qemu-io @var{device} @var{command} 1675@findex qemu-io 1676 1677Executes a qemu-io command on the given block device. 1678 1679ETEXI 1680 1681 { 1682 .name = "cpu-add", 1683 .args_type = "id:i", 1684 .params = "id", 1685 .help = "add cpu", 1686 .mhandler.cmd = hmp_cpu_add, 1687 }, 1688 1689STEXI 1690@item cpu-add @var{id} 1691Add CPU with id @var{id} 1692ETEXI 1693 1694 { 1695 .name = "info", 1696 .args_type = "item:s?", 1697 .params = "[subcommand]", 1698 .help = "show various information about the system state", 1699 .mhandler.cmd = do_info_help, 1700 .sub_table = info_cmds, 1701 }, 1702 1703STEXI 1704@item info @var{subcommand} 1705@findex info 1706Show various information about the system state. 1707 1708@table @option 1709@item info version 1710show the version of QEMU 1711@item info network 1712show the various VLANs and the associated devices 1713@item info chardev 1714show the character devices 1715@item info block 1716show the block devices 1717@item info blockstats 1718show block device statistics 1719@item info registers 1720show the cpu registers 1721@item info cpus 1722show infos for each CPU 1723@item info history 1724show the command line history 1725@item info irq 1726show the interrupts statistics (if available) 1727@item info pic 1728show i8259 (PIC) state 1729@item info pci 1730show emulated PCI device info 1731@item info tlb 1732show virtual to physical memory mappings (i386, SH4, SPARC, PPC, and Xtensa only) 1733@item info mem 1734show the active virtual memory mappings (i386 only) 1735@item info jit 1736show dynamic compiler info 1737@item info numa 1738show NUMA information 1739@item info kvm 1740show KVM information 1741@item info usb 1742show USB devices plugged on the virtual USB hub 1743@item info usbhost 1744show all USB host devices 1745@item info profile 1746show profiling information 1747@item info capture 1748show information about active capturing 1749@item info snapshots 1750show list of VM snapshots 1751@item info status 1752show the current VM status (running|paused) 1753@item info pcmcia 1754show guest PCMCIA status 1755@item info mice 1756show which guest mouse is receiving events 1757@item info vnc 1758show the vnc server status 1759@item info name 1760show the current VM name 1761@item info uuid 1762show the current VM UUID 1763@item info cpustats 1764show CPU statistics 1765@item info usernet 1766show user network stack connection states 1767@item info migrate 1768show migration status 1769@item info migrate_capabilities 1770show current migration capabilities 1771@item info migrate_cache_size 1772show current migration XBZRLE cache size 1773@item info balloon 1774show balloon information 1775@item info qtree 1776show device tree 1777@item info qdm 1778show qdev device model list 1779@item info roms 1780show roms 1781@item info tpm 1782show the TPM device 1783@end table 1784ETEXI 1785 1786STEXI 1787@item info trace-events 1788show available trace events and their state 1789ETEXI 1790 1791STEXI 1792@end table 1793ETEXI 1794