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 .cmd = do_help_cmd, 18 .flags = "p", 19 }, 20 21STEXI 22@item help or ? [@var{cmd}] 23@findex help 24Show the help for all commands or just for command @var{cmd}. 25ETEXI 26 27 { 28 .name = "commit", 29 .args_type = "device:B", 30 .params = "device|all", 31 .help = "commit changes to the disk images (if -snapshot is used) or backing files", 32 .cmd = hmp_commit, 33 }, 34 35STEXI 36@item commit 37@findex commit 38Commit changes to the disk images (if -snapshot is used) or backing files. 39If the backing file is smaller than the snapshot, then the backing file will be 40resized to be the same size as the snapshot. If the snapshot is smaller than 41the backing file, the backing file will not be truncated. If you want the 42backing file to match the size of the smaller snapshot, you can safely truncate 43it yourself once the commit operation successfully completes. 44ETEXI 45 46 { 47 .name = "q|quit", 48 .args_type = "", 49 .params = "", 50 .help = "quit the emulator", 51 .cmd = hmp_quit, 52 }, 53 54STEXI 55@item q or quit 56@findex quit 57Quit the emulator. 58ETEXI 59 60 { 61 .name = "exit_preconfig", 62 .args_type = "", 63 .params = "", 64 .help = "exit the preconfig state", 65 .cmd = hmp_exit_preconfig, 66 .flags = "p", 67 }, 68 69STEXI 70@item exit_preconfig 71@findex exit_preconfig 72This command makes QEMU exit the preconfig state and proceed with 73VM initialization using configuration data provided on the command line 74and via the QMP monitor during the preconfig state. The command is only 75available during the preconfig state (i.e. when the --preconfig command 76line option was in use). 77ETEXI 78 79 { 80 .name = "block_resize", 81 .args_type = "device:B,size:o", 82 .params = "device size", 83 .help = "resize a block image", 84 .cmd = hmp_block_resize, 85 }, 86 87STEXI 88@item block_resize 89@findex block_resize 90Resize a block image while a guest is running. Usually requires guest 91action to see the updated size. Resize to a lower size is supported, 92but should be used with extreme caution. Note that this command only 93resizes image files, it can not resize block devices like LVM volumes. 94ETEXI 95 96 { 97 .name = "block_stream", 98 .args_type = "device:B,speed:o?,base:s?", 99 .params = "device [speed [base]]", 100 .help = "copy data from a backing file into a block device", 101 .cmd = hmp_block_stream, 102 }, 103 104STEXI 105@item block_stream 106@findex block_stream 107Copy data from a backing file into a block device. 108ETEXI 109 110 { 111 .name = "block_job_set_speed", 112 .args_type = "device:B,speed:o", 113 .params = "device speed", 114 .help = "set maximum speed for a background block operation", 115 .cmd = hmp_block_job_set_speed, 116 }, 117 118STEXI 119@item block_job_set_speed 120@findex block_job_set_speed 121Set maximum speed for a background block operation. 122ETEXI 123 124 { 125 .name = "block_job_cancel", 126 .args_type = "force:-f,device:B", 127 .params = "[-f] device", 128 .help = "stop an active background block operation (use -f" 129 "\n\t\t\t if you want to abort the operation immediately" 130 "\n\t\t\t instead of keep running until data is in sync)", 131 .cmd = hmp_block_job_cancel, 132 }, 133 134STEXI 135@item block_job_cancel 136@findex block_job_cancel 137Stop an active background block operation (streaming, mirroring). 138ETEXI 139 140 { 141 .name = "block_job_complete", 142 .args_type = "device:B", 143 .params = "device", 144 .help = "stop an active background block operation", 145 .cmd = hmp_block_job_complete, 146 }, 147 148STEXI 149@item block_job_complete 150@findex block_job_complete 151Manually trigger completion of an active background block operation. 152For mirroring, this will switch the device to the destination path. 153ETEXI 154 155 { 156 .name = "block_job_pause", 157 .args_type = "device:B", 158 .params = "device", 159 .help = "pause an active background block operation", 160 .cmd = hmp_block_job_pause, 161 }, 162 163STEXI 164@item block_job_pause 165@findex block_job_pause 166Pause an active block streaming operation. 167ETEXI 168 169 { 170 .name = "block_job_resume", 171 .args_type = "device:B", 172 .params = "device", 173 .help = "resume a paused background block operation", 174 .cmd = hmp_block_job_resume, 175 }, 176 177STEXI 178@item block_job_resume 179@findex block_job_resume 180Resume a paused block streaming operation. 181ETEXI 182 183 { 184 .name = "eject", 185 .args_type = "force:-f,device:B", 186 .params = "[-f] device", 187 .help = "eject a removable medium (use -f to force it)", 188 .cmd = hmp_eject, 189 }, 190 191STEXI 192@item eject [-f] @var{device} 193@findex eject 194Eject a removable medium (use -f to force it). 195ETEXI 196 197 { 198 .name = "drive_del", 199 .args_type = "id:B", 200 .params = "device", 201 .help = "remove host block device", 202 .cmd = hmp_drive_del, 203 }, 204 205STEXI 206@item drive_del @var{device} 207@findex drive_del 208Remove host block device. The result is that guest generated IO is no longer 209submitted against the host device underlying the disk. Once a drive has 210been deleted, the QEMU Block layer returns -EIO which results in IO 211errors in the guest for applications that are reading/writing to the device. 212These errors are always reported to the guest, regardless of the drive's error 213actions (drive options rerror, werror). 214ETEXI 215 216 { 217 .name = "change", 218 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?", 219 .params = "device filename [format [read-only-mode]]", 220 .help = "change a removable medium, optional format", 221 .cmd = hmp_change, 222 }, 223 224STEXI 225@item change @var{device} @var{setting} 226@findex change 227Change the configuration of a device. 228 229@table @option 230@item change @var{diskdevice} @var{filename} [@var{format} [@var{read-only-mode}]] 231Change the medium for a removable disk device to point to @var{filename}. eg 232 233@example 234(qemu) change ide1-cd0 /path/to/some.iso 235@end example 236 237@var{format} is optional. 238 239@var{read-only-mode} may be used to change the read-only status of the device. 240It accepts the following values: 241 242@table @var 243@item retain 244Retains the current status; this is the default. 245 246@item read-only 247Makes the device read-only. 248 249@item read-write 250Makes the device writable. 251@end table 252 253@item change vnc @var{display},@var{options} 254Change the configuration of the VNC server. The valid syntax for @var{display} 255and @var{options} are described at @ref{sec_invocation}. eg 256 257@example 258(qemu) change vnc localhost:1 259@end example 260 261@item change vnc password [@var{password}] 262 263Change the password associated with the VNC server. If the new password is not 264supplied, the monitor will prompt for it to be entered. VNC passwords are only 265significant up to 8 letters. eg 266 267@example 268(qemu) change vnc password 269Password: ******** 270@end example 271 272@end table 273ETEXI 274 275 { 276 .name = "screendump", 277 .args_type = "filename:F,device:s?,head:i?", 278 .params = "filename [device [head]]", 279 .help = "save screen from head 'head' of display device 'device' " 280 "into PPM image 'filename'", 281 .cmd = hmp_screendump, 282 }, 283 284STEXI 285@item screendump @var{filename} 286@findex screendump 287Save screen into PPM image @var{filename}. 288ETEXI 289 290 { 291 .name = "logfile", 292 .args_type = "filename:F", 293 .params = "filename", 294 .help = "output logs to 'filename'", 295 .cmd = hmp_logfile, 296 }, 297 298STEXI 299@item logfile @var{filename} 300@findex logfile 301Output logs to @var{filename}. 302ETEXI 303 304 { 305 .name = "trace-event", 306 .args_type = "name:s,option:b,vcpu:i?", 307 .params = "name on|off [vcpu]", 308 .help = "changes status of a specific trace event " 309 "(vcpu: vCPU to set, default is all)", 310 .cmd = hmp_trace_event, 311 .command_completion = trace_event_completion, 312 }, 313 314STEXI 315@item trace-event 316@findex trace-event 317changes status of a trace event 318ETEXI 319 320#if defined(CONFIG_TRACE_SIMPLE) 321 { 322 .name = "trace-file", 323 .args_type = "op:s?,arg:F?", 324 .params = "on|off|flush|set [arg]", 325 .help = "open, close, or flush trace file, or set a new file name", 326 .cmd = hmp_trace_file, 327 }, 328 329STEXI 330@item trace-file on|off|flush 331@findex trace-file 332Open, close, or flush the trace file. If no argument is given, the status of the trace file is displayed. 333ETEXI 334#endif 335 336 { 337 .name = "log", 338 .args_type = "items:s", 339 .params = "item1[,...]", 340 .help = "activate logging of the specified items", 341 .cmd = hmp_log, 342 }, 343 344STEXI 345@item log @var{item1}[,...] 346@findex log 347Activate logging of the specified items. 348ETEXI 349 350 { 351 .name = "savevm", 352 .args_type = "name:s?", 353 .params = "[tag|id]", 354 .help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created", 355 .cmd = hmp_savevm, 356 }, 357 358STEXI 359@item savevm [@var{tag}|@var{id}] 360@findex savevm 361Create a snapshot of the whole virtual machine. If @var{tag} is 362provided, it is used as human readable identifier. If there is already 363a snapshot with the same tag or ID, it is replaced. More info at 364@ref{vm_snapshots}. 365ETEXI 366 367 { 368 .name = "loadvm", 369 .args_type = "name:s", 370 .params = "tag|id", 371 .help = "restore a VM snapshot from its tag or id", 372 .cmd = hmp_loadvm, 373 .command_completion = loadvm_completion, 374 }, 375 376STEXI 377@item loadvm @var{tag}|@var{id} 378@findex loadvm 379Set the whole virtual machine to the snapshot identified by the tag 380@var{tag} or the unique snapshot ID @var{id}. 381ETEXI 382 383 { 384 .name = "delvm", 385 .args_type = "name:s", 386 .params = "tag|id", 387 .help = "delete a VM snapshot from its tag or id", 388 .cmd = hmp_delvm, 389 .command_completion = delvm_completion, 390 }, 391 392STEXI 393@item delvm @var{tag}|@var{id} 394@findex delvm 395Delete the snapshot identified by @var{tag} or @var{id}. 396ETEXI 397 398 { 399 .name = "singlestep", 400 .args_type = "option:s?", 401 .params = "[on|off]", 402 .help = "run emulation in singlestep mode or switch to normal mode", 403 .cmd = hmp_singlestep, 404 }, 405 406STEXI 407@item singlestep [off] 408@findex singlestep 409Run the emulation in single step mode. 410If called with option off, the emulation returns to normal mode. 411ETEXI 412 413 { 414 .name = "stop", 415 .args_type = "", 416 .params = "", 417 .help = "stop emulation", 418 .cmd = hmp_stop, 419 }, 420 421STEXI 422@item stop 423@findex stop 424Stop emulation. 425ETEXI 426 427 { 428 .name = "c|cont", 429 .args_type = "", 430 .params = "", 431 .help = "resume emulation", 432 .cmd = hmp_cont, 433 }, 434 435STEXI 436@item c or cont 437@findex cont 438Resume emulation. 439ETEXI 440 441 { 442 .name = "system_wakeup", 443 .args_type = "", 444 .params = "", 445 .help = "wakeup guest from suspend", 446 .cmd = hmp_system_wakeup, 447 }, 448 449STEXI 450@item system_wakeup 451@findex system_wakeup 452Wakeup guest from suspend. 453ETEXI 454 455 { 456 .name = "gdbserver", 457 .args_type = "device:s?", 458 .params = "[device]", 459 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", 460 .cmd = hmp_gdbserver, 461 }, 462 463STEXI 464@item gdbserver [@var{port}] 465@findex gdbserver 466Start gdbserver session (default @var{port}=1234) 467ETEXI 468 469 { 470 .name = "x", 471 .args_type = "fmt:/,addr:l", 472 .params = "/fmt addr", 473 .help = "virtual memory dump starting at 'addr'", 474 .cmd = hmp_memory_dump, 475 }, 476 477STEXI 478@item x/fmt @var{addr} 479@findex x 480Virtual memory dump starting at @var{addr}. 481ETEXI 482 483 { 484 .name = "xp", 485 .args_type = "fmt:/,addr:l", 486 .params = "/fmt addr", 487 .help = "physical memory dump starting at 'addr'", 488 .cmd = hmp_physical_memory_dump, 489 }, 490 491STEXI 492@item xp /@var{fmt} @var{addr} 493@findex xp 494Physical memory dump starting at @var{addr}. 495 496@var{fmt} is a format which tells the command how to format the 497data. Its syntax is: @option{/@{count@}@{format@}@{size@}} 498 499@table @var 500@item count 501is the number of items to be dumped. 502 503@item format 504can be x (hex), d (signed decimal), u (unsigned decimal), o (octal), 505c (char) or i (asm instruction). 506 507@item size 508can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86, 509@code{h} or @code{w} can be specified with the @code{i} format to 510respectively select 16 or 32 bit code instruction size. 511 512@end table 513 514Examples: 515@itemize 516@item 517Dump 10 instructions at the current instruction pointer: 518@example 519(qemu) x/10i $eip 5200x90107063: ret 5210x90107064: sti 5220x90107065: lea 0x0(%esi,1),%esi 5230x90107069: lea 0x0(%edi,1),%edi 5240x90107070: ret 5250x90107071: jmp 0x90107080 5260x90107073: nop 5270x90107074: nop 5280x90107075: nop 5290x90107076: nop 530@end example 531 532@item 533Dump 80 16 bit values at the start of the video memory. 534@smallexample 535(qemu) xp/80hx 0xb8000 5360x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42 5370x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41 5380x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72 5390x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73 5400x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20 5410x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720 5420x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5430x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5440x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5450x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 546@end smallexample 547@end itemize 548ETEXI 549 550 { 551 .name = "gpa2hva", 552 .args_type = "addr:l", 553 .params = "addr", 554 .help = "print the host virtual address corresponding to a guest physical address", 555 .cmd = hmp_gpa2hva, 556 }, 557 558STEXI 559@item gpa2hva @var{addr} 560@findex gpa2hva 561Print the host virtual address at which the guest's physical address @var{addr} 562is mapped. 563ETEXI 564 565#ifdef CONFIG_LINUX 566 { 567 .name = "gpa2hpa", 568 .args_type = "addr:l", 569 .params = "addr", 570 .help = "print the host physical address corresponding to a guest physical address", 571 .cmd = hmp_gpa2hpa, 572 }, 573#endif 574 575STEXI 576@item gpa2hpa @var{addr} 577@findex gpa2hpa 578Print the host physical address at which the guest's physical address @var{addr} 579is mapped. 580ETEXI 581 582 { 583 .name = "p|print", 584 .args_type = "fmt:/,val:l", 585 .params = "/fmt expr", 586 .help = "print expression value (use $reg for CPU register access)", 587 .cmd = do_print, 588 }, 589 590STEXI 591@item p or print/@var{fmt} @var{expr} 592@findex print 593Print expression value. Only the @var{format} part of @var{fmt} is 594used. 595ETEXI 596 597 { 598 .name = "i", 599 .args_type = "fmt:/,addr:i,index:i.", 600 .params = "/fmt addr", 601 .help = "I/O port read", 602 .cmd = hmp_ioport_read, 603 }, 604 605STEXI 606@item i/@var{fmt} @var{addr} [.@var{index}] 607@findex i 608Read I/O port. 609ETEXI 610 611 { 612 .name = "o", 613 .args_type = "fmt:/,addr:i,val:i", 614 .params = "/fmt addr value", 615 .help = "I/O port write", 616 .cmd = hmp_ioport_write, 617 }, 618 619STEXI 620@item o/@var{fmt} @var{addr} @var{val} 621@findex o 622Write to I/O port. 623ETEXI 624 625 { 626 .name = "sendkey", 627 .args_type = "keys:s,hold-time:i?", 628 .params = "keys [hold_ms]", 629 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)", 630 .cmd = hmp_sendkey, 631 .command_completion = sendkey_completion, 632 }, 633 634STEXI 635@item sendkey @var{keys} 636@findex sendkey 637Send @var{keys} to the guest. @var{keys} could be the name of the 638key or the raw value in hexadecimal format. Use @code{-} to press 639several keys simultaneously. Example: 640@example 641sendkey ctrl-alt-f1 642@end example 643 644This command is useful to send keys that your graphical user interface 645intercepts at low level, such as @code{ctrl-alt-f1} in X Window. 646ETEXI 647 648 { 649 .name = "system_reset", 650 .args_type = "", 651 .params = "", 652 .help = "reset the system", 653 .cmd = hmp_system_reset, 654 }, 655 656STEXI 657@item system_reset 658@findex system_reset 659Reset the system. 660ETEXI 661 662 { 663 .name = "system_powerdown", 664 .args_type = "", 665 .params = "", 666 .help = "send system power down event", 667 .cmd = hmp_system_powerdown, 668 }, 669 670STEXI 671@item system_powerdown 672@findex system_powerdown 673Power down the system (if supported). 674ETEXI 675 676 { 677 .name = "sum", 678 .args_type = "start:i,size:i", 679 .params = "addr size", 680 .help = "compute the checksum of a memory region", 681 .cmd = hmp_sum, 682 }, 683 684STEXI 685@item sum @var{addr} @var{size} 686@findex sum 687Compute the checksum of a memory region. 688ETEXI 689 690 { 691 .name = "device_add", 692 .args_type = "device:O", 693 .params = "driver[,prop=value][,...]", 694 .help = "add device, like -device on the command line", 695 .cmd = hmp_device_add, 696 .command_completion = device_add_completion, 697 }, 698 699STEXI 700@item device_add @var{config} 701@findex device_add 702Add device. 703ETEXI 704 705 { 706 .name = "device_del", 707 .args_type = "id:s", 708 .params = "device", 709 .help = "remove device", 710 .cmd = hmp_device_del, 711 .command_completion = device_del_completion, 712 }, 713 714STEXI 715@item device_del @var{id} 716@findex device_del 717Remove device @var{id}. @var{id} may be a short ID 718or a QOM object path. 719ETEXI 720 721 { 722 .name = "cpu", 723 .args_type = "index:i", 724 .params = "index", 725 .help = "set the default CPU", 726 .cmd = hmp_cpu, 727 }, 728 729STEXI 730@item cpu @var{index} 731@findex cpu 732Set the default CPU. 733ETEXI 734 735 { 736 .name = "mouse_move", 737 .args_type = "dx_str:s,dy_str:s,dz_str:s?", 738 .params = "dx dy [dz]", 739 .help = "send mouse move events", 740 .cmd = hmp_mouse_move, 741 }, 742 743STEXI 744@item mouse_move @var{dx} @var{dy} [@var{dz}] 745@findex mouse_move 746Move the active mouse to the specified coordinates @var{dx} @var{dy} 747with optional scroll axis @var{dz}. 748ETEXI 749 750 { 751 .name = "mouse_button", 752 .args_type = "button_state:i", 753 .params = "state", 754 .help = "change mouse button state (1=L, 2=M, 4=R)", 755 .cmd = hmp_mouse_button, 756 }, 757 758STEXI 759@item mouse_button @var{val} 760@findex mouse_button 761Change the active mouse button state @var{val} (1=L, 2=M, 4=R). 762ETEXI 763 764 { 765 .name = "mouse_set", 766 .args_type = "index:i", 767 .params = "index", 768 .help = "set which mouse device receives events", 769 .cmd = hmp_mouse_set, 770 }, 771 772STEXI 773@item mouse_set @var{index} 774@findex mouse_set 775Set which mouse device receives events at given @var{index}, index 776can be obtained with 777@example 778info mice 779@end example 780ETEXI 781 782 { 783 .name = "wavcapture", 784 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?", 785 .params = "path [frequency [bits [channels]]]", 786 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)", 787 .cmd = hmp_wavcapture, 788 }, 789STEXI 790@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]] 791@findex wavcapture 792Capture audio into @var{filename}. Using sample rate @var{frequency} 793bits per sample @var{bits} and number of channels @var{channels}. 794 795Defaults: 796@itemize @minus 797@item Sample rate = 44100 Hz - CD quality 798@item Bits = 16 799@item Number of channels = 2 - Stereo 800@end itemize 801ETEXI 802 803 { 804 .name = "stopcapture", 805 .args_type = "n:i", 806 .params = "capture index", 807 .help = "stop capture", 808 .cmd = hmp_stopcapture, 809 }, 810STEXI 811@item stopcapture @var{index} 812@findex stopcapture 813Stop capture with a given @var{index}, index can be obtained with 814@example 815info capture 816@end example 817ETEXI 818 819 { 820 .name = "memsave", 821 .args_type = "val:l,size:i,filename:s", 822 .params = "addr size file", 823 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'", 824 .cmd = hmp_memsave, 825 }, 826 827STEXI 828@item memsave @var{addr} @var{size} @var{file} 829@findex memsave 830save to disk virtual memory dump starting at @var{addr} of size @var{size}. 831ETEXI 832 833 { 834 .name = "pmemsave", 835 .args_type = "val:l,size:i,filename:s", 836 .params = "addr size file", 837 .help = "save to disk physical memory dump starting at 'addr' of size 'size'", 838 .cmd = hmp_pmemsave, 839 }, 840 841STEXI 842@item pmemsave @var{addr} @var{size} @var{file} 843@findex pmemsave 844save to disk physical memory dump starting at @var{addr} of size @var{size}. 845ETEXI 846 847 { 848 .name = "boot_set", 849 .args_type = "bootdevice:s", 850 .params = "bootdevice", 851 .help = "define new values for the boot device list", 852 .cmd = hmp_boot_set, 853 }, 854 855STEXI 856@item boot_set @var{bootdevicelist} 857@findex boot_set 858Define new values for the boot device list. Those values will override 859the values specified on the command line through the @code{-boot} option. 860 861The values that can be specified here depend on the machine type, but are 862the same that can be specified in the @code{-boot} command line option. 863ETEXI 864 865 { 866 .name = "nmi", 867 .args_type = "", 868 .params = "", 869 .help = "inject an NMI", 870 .cmd = hmp_nmi, 871 }, 872STEXI 873@item nmi @var{cpu} 874@findex nmi 875Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64). 876 877ETEXI 878 879 { 880 .name = "ringbuf_write", 881 .args_type = "device:s,data:s", 882 .params = "device data", 883 .help = "Write to a ring buffer character device", 884 .cmd = hmp_ringbuf_write, 885 .command_completion = ringbuf_write_completion, 886 }, 887 888STEXI 889@item ringbuf_write @var{device} @var{data} 890@findex ringbuf_write 891Write @var{data} to ring buffer character device @var{device}. 892@var{data} must be a UTF-8 string. 893 894ETEXI 895 896 { 897 .name = "ringbuf_read", 898 .args_type = "device:s,size:i", 899 .params = "device size", 900 .help = "Read from a ring buffer character device", 901 .cmd = hmp_ringbuf_read, 902 .command_completion = ringbuf_write_completion, 903 }, 904 905STEXI 906@item ringbuf_read @var{device} 907@findex ringbuf_read 908Read and print up to @var{size} bytes from ring buffer character 909device @var{device}. 910Certain non-printable characters are printed \uXXXX, where XXXX is the 911character code in hexadecimal. Character \ is printed \\. 912Bug: can screw up when the buffer contains invalid UTF-8 sequences, 913NUL characters, after the ring buffer lost data, and when reading 914stops because the size limit is reached. 915 916ETEXI 917 918 { 919 .name = "migrate", 920 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s", 921 .params = "[-d] [-b] [-i] [-r] uri", 922 .help = "migrate to URI (using -d to not wait for completion)" 923 "\n\t\t\t -b for migration without shared storage with" 924 " full copy of disk\n\t\t\t -i for migration without " 925 "shared storage with incremental copy of disk " 926 "(base image shared between src and destination)" 927 "\n\t\t\t -r to resume a paused migration", 928 .cmd = hmp_migrate, 929 }, 930 931 932STEXI 933@item migrate [-d] [-b] [-i] @var{uri} 934@findex migrate 935Migrate to @var{uri} (using -d to not wait for completion). 936 -b for migration with full copy of disk 937 -i for migration with incremental copy of disk (base image is shared) 938ETEXI 939 940 { 941 .name = "migrate_cancel", 942 .args_type = "", 943 .params = "", 944 .help = "cancel the current VM migration", 945 .cmd = hmp_migrate_cancel, 946 }, 947 948STEXI 949@item migrate_cancel 950@findex migrate_cancel 951Cancel the current VM migration. 952ETEXI 953 954 { 955 .name = "migrate_continue", 956 .args_type = "state:s", 957 .params = "state", 958 .help = "Continue migration from the given paused state", 959 .cmd = hmp_migrate_continue, 960 }, 961STEXI 962@item migrate_continue @var{state} 963@findex migrate_continue 964Continue migration from the paused state @var{state} 965ETEXI 966 967 { 968 .name = "migrate_incoming", 969 .args_type = "uri:s", 970 .params = "uri", 971 .help = "Continue an incoming migration from an -incoming defer", 972 .cmd = hmp_migrate_incoming, 973 }, 974 975STEXI 976@item migrate_incoming @var{uri} 977@findex migrate_incoming 978Continue an incoming migration using the @var{uri} (that has the same syntax 979as the -incoming option). 980ETEXI 981 982 { 983 .name = "migrate_recover", 984 .args_type = "uri:s", 985 .params = "uri", 986 .help = "Continue a paused incoming postcopy migration", 987 .cmd = hmp_migrate_recover, 988 }, 989 990STEXI 991@item migrate_recover @var{uri} 992@findex migrate_recover 993Continue a paused incoming postcopy migration using the @var{uri}. 994ETEXI 995 996 { 997 .name = "migrate_pause", 998 .args_type = "", 999 .params = "", 1000 .help = "Pause an ongoing migration (postcopy-only)", 1001 .cmd = hmp_migrate_pause, 1002 }, 1003 1004STEXI 1005@item migrate_pause 1006@findex migrate_pause 1007Pause an ongoing migration. Currently it only supports postcopy. 1008ETEXI 1009 1010 { 1011 .name = "migrate_set_cache_size", 1012 .args_type = "value:o", 1013 .params = "value", 1014 .help = "set cache size (in bytes) for XBZRLE migrations," 1015 "the cache size will be rounded down to the nearest " 1016 "power of 2.\n" 1017 "The cache size affects the number of cache misses." 1018 "In case of a high cache miss ratio you need to increase" 1019 " the cache size", 1020 .cmd = hmp_migrate_set_cache_size, 1021 }, 1022 1023STEXI 1024@item migrate_set_cache_size @var{value} 1025@findex migrate_set_cache_size 1026Set cache size to @var{value} (in bytes) for xbzrle migrations. 1027ETEXI 1028 1029 { 1030 .name = "migrate_set_speed", 1031 .args_type = "value:o", 1032 .params = "value", 1033 .help = "set maximum speed (in bytes) for migrations. " 1034 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T", 1035 .cmd = hmp_migrate_set_speed, 1036 }, 1037 1038STEXI 1039@item migrate_set_speed @var{value} 1040@findex migrate_set_speed 1041Set maximum speed to @var{value} (in bytes) for migrations. 1042ETEXI 1043 1044 { 1045 .name = "migrate_set_downtime", 1046 .args_type = "value:T", 1047 .params = "value", 1048 .help = "set maximum tolerated downtime (in seconds) for migrations", 1049 .cmd = hmp_migrate_set_downtime, 1050 }, 1051 1052STEXI 1053@item migrate_set_downtime @var{second} 1054@findex migrate_set_downtime 1055Set maximum tolerated downtime (in seconds) for migration. 1056ETEXI 1057 1058 { 1059 .name = "migrate_set_capability", 1060 .args_type = "capability:s,state:b", 1061 .params = "capability state", 1062 .help = "Enable/Disable the usage of a capability for migration", 1063 .cmd = hmp_migrate_set_capability, 1064 .command_completion = migrate_set_capability_completion, 1065 }, 1066 1067STEXI 1068@item migrate_set_capability @var{capability} @var{state} 1069@findex migrate_set_capability 1070Enable/Disable the usage of a capability @var{capability} for migration. 1071ETEXI 1072 1073 { 1074 .name = "migrate_set_parameter", 1075 .args_type = "parameter:s,value:s", 1076 .params = "parameter value", 1077 .help = "Set the parameter for migration", 1078 .cmd = hmp_migrate_set_parameter, 1079 .command_completion = migrate_set_parameter_completion, 1080 }, 1081 1082STEXI 1083@item migrate_set_parameter @var{parameter} @var{value} 1084@findex migrate_set_parameter 1085Set the parameter @var{parameter} for migration. 1086ETEXI 1087 1088 { 1089 .name = "migrate_start_postcopy", 1090 .args_type = "", 1091 .params = "", 1092 .help = "Followup to a migration command to switch the migration" 1093 " to postcopy mode. The postcopy-ram capability must " 1094 "be set on both source and destination before the " 1095 "original migration command .", 1096 .cmd = hmp_migrate_start_postcopy, 1097 }, 1098 1099STEXI 1100@item migrate_start_postcopy 1101@findex migrate_start_postcopy 1102Switch in-progress migration to postcopy mode. Ignored after the end of 1103migration (or once already in postcopy). 1104ETEXI 1105 1106 { 1107 .name = "x_colo_lost_heartbeat", 1108 .args_type = "", 1109 .params = "", 1110 .help = "Tell COLO that heartbeat is lost,\n\t\t\t" 1111 "a failover or takeover is needed.", 1112 .cmd = hmp_x_colo_lost_heartbeat, 1113 }, 1114 1115STEXI 1116@item x_colo_lost_heartbeat 1117@findex x_colo_lost_heartbeat 1118Tell COLO that heartbeat is lost, a failover or takeover is needed. 1119ETEXI 1120 1121 { 1122 .name = "client_migrate_info", 1123 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", 1124 .params = "protocol hostname port tls-port cert-subject", 1125 .help = "set migration information for remote display", 1126 .cmd = hmp_client_migrate_info, 1127 }, 1128 1129STEXI 1130@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject} 1131@findex client_migrate_info 1132Set migration information for remote display. This makes the server 1133ask the client to automatically reconnect using the new parameters 1134once migration finished successfully. Only implemented for SPICE. 1135ETEXI 1136 1137 { 1138 .name = "dump-guest-memory", 1139 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?", 1140 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]", 1141 .help = "dump guest memory into file 'filename'.\n\t\t\t" 1142 "-p: do paging to get guest's memory mapping.\n\t\t\t" 1143 "-d: return immediately (do not wait for completion).\n\t\t\t" 1144 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t" 1145 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t" 1146 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t" 1147 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t" 1148 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t" 1149 "begin: the starting physical address.\n\t\t\t" 1150 "length: the memory size, in bytes.", 1151 .cmd = hmp_dump_guest_memory, 1152 }, 1153 1154STEXI 1155@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length} 1156@item dump-guest-memory [-z|-l|-s|-w] @var{filename} 1157@findex dump-guest-memory 1158Dump guest memory to @var{protocol}. The file can be processed with crash or 1159gdb. Without -z|-l|-s|-w, the dump format is ELF. 1160 -p: do paging to get guest's memory mapping. 1161 -z: dump in kdump-compressed format, with zlib compression. 1162 -l: dump in kdump-compressed format, with lzo compression. 1163 -s: dump in kdump-compressed format, with snappy compression. 1164 -w: dump in Windows crashdump format (can be used instead of ELF-dump converting), 1165 for Windows x64 guests with vmcoreinfo driver only 1166 filename: dump file name. 1167 begin: the starting physical address. It's optional, and should be 1168 specified together with length. 1169 length: the memory size, in bytes. It's optional, and should be specified 1170 together with begin. 1171ETEXI 1172 1173#if defined(TARGET_S390X) 1174 { 1175 .name = "dump-skeys", 1176 .args_type = "filename:F", 1177 .params = "", 1178 .help = "Save guest storage keys into file 'filename'.\n", 1179 .cmd = hmp_dump_skeys, 1180 }, 1181#endif 1182 1183STEXI 1184@item dump-skeys @var{filename} 1185@findex dump-skeys 1186Save guest storage keys to a file. 1187ETEXI 1188 1189#if defined(TARGET_S390X) 1190 { 1191 .name = "migration_mode", 1192 .args_type = "mode:i", 1193 .params = "mode", 1194 .help = "Enables or disables migration mode\n", 1195 .cmd = hmp_migrationmode, 1196 }, 1197#endif 1198 1199STEXI 1200@item migration_mode @var{mode} 1201@findex migration_mode 1202Enables or disables migration mode. 1203ETEXI 1204 1205 { 1206 .name = "snapshot_blkdev", 1207 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?", 1208 .params = "[-n] device [new-image-file] [format]", 1209 .help = "initiates a live snapshot\n\t\t\t" 1210 "of device. If a new image file is specified, the\n\t\t\t" 1211 "new image file will become the new root image.\n\t\t\t" 1212 "If format is specified, the snapshot file will\n\t\t\t" 1213 "be created in that format.\n\t\t\t" 1214 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t" 1215 "to reuse the image found in new-image-file, instead of\n\t\t\t" 1216 "recreating it from scratch.", 1217 .cmd = hmp_snapshot_blkdev, 1218 }, 1219 1220STEXI 1221@item snapshot_blkdev 1222@findex snapshot_blkdev 1223Snapshot device, using snapshot file as target if provided 1224ETEXI 1225 1226 { 1227 .name = "snapshot_blkdev_internal", 1228 .args_type = "device:B,name:s", 1229 .params = "device name", 1230 .help = "take an internal snapshot of device.\n\t\t\t" 1231 "The format of the image used by device must\n\t\t\t" 1232 "support it, such as qcow2.\n\t\t\t", 1233 .cmd = hmp_snapshot_blkdev_internal, 1234 }, 1235 1236STEXI 1237@item snapshot_blkdev_internal 1238@findex snapshot_blkdev_internal 1239Take an internal snapshot on device if it support 1240ETEXI 1241 1242 { 1243 .name = "snapshot_delete_blkdev_internal", 1244 .args_type = "device:B,name:s,id:s?", 1245 .params = "device name [id]", 1246 .help = "delete an internal snapshot of device.\n\t\t\t" 1247 "If id is specified, qemu will try delete\n\t\t\t" 1248 "the snapshot matching both id and name.\n\t\t\t" 1249 "The format of the image used by device must\n\t\t\t" 1250 "support it, such as qcow2.\n\t\t\t", 1251 .cmd = hmp_snapshot_delete_blkdev_internal, 1252 }, 1253 1254STEXI 1255@item snapshot_delete_blkdev_internal 1256@findex snapshot_delete_blkdev_internal 1257Delete an internal snapshot on device if it support 1258ETEXI 1259 1260 { 1261 .name = "drive_mirror", 1262 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?", 1263 .params = "[-n] [-f] device target [format]", 1264 .help = "initiates live storage\n\t\t\t" 1265 "migration for a device. The device's contents are\n\t\t\t" 1266 "copied to the new image file, including data that\n\t\t\t" 1267 "is written after the command is started.\n\t\t\t" 1268 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1269 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1270 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1271 "so that the result does not need a backing file.\n\t\t\t", 1272 .cmd = hmp_drive_mirror, 1273 }, 1274STEXI 1275@item drive_mirror 1276@findex drive_mirror 1277Start mirroring a block device's writes to a new destination, 1278using the specified target. 1279ETEXI 1280 1281 { 1282 .name = "drive_backup", 1283 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?", 1284 .params = "[-n] [-f] [-c] device target [format]", 1285 .help = "initiates a point-in-time\n\t\t\t" 1286 "copy for a device. The device's contents are\n\t\t\t" 1287 "copied to the new image file, excluding data that\n\t\t\t" 1288 "is written after the command is started.\n\t\t\t" 1289 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1290 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1291 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1292 "so that the result does not need a backing file.\n\t\t\t" 1293 "The -c flag requests QEMU to compress backup data\n\t\t\t" 1294 "(if the target format supports it).\n\t\t\t", 1295 .cmd = hmp_drive_backup, 1296 }, 1297STEXI 1298@item drive_backup 1299@findex drive_backup 1300Start a point-in-time copy of a block device to a specificed target. 1301ETEXI 1302 1303 { 1304 .name = "drive_add", 1305 .args_type = "node:-n,pci_addr:s,opts:s", 1306 .params = "[-n] [[<domain>:]<bus>:]<slot>\n" 1307 "[file=file][,if=type][,bus=n]\n" 1308 "[,unit=m][,media=d][,index=i]\n" 1309 "[,snapshot=on|off][,cache=on|off]\n" 1310 "[,readonly=on|off][,copy-on-read=on|off]", 1311 .help = "add drive to PCI storage controller", 1312 .cmd = hmp_drive_add, 1313 }, 1314 1315STEXI 1316@item drive_add 1317@findex drive_add 1318Add drive to PCI storage controller. 1319ETEXI 1320 1321 { 1322 .name = "pcie_aer_inject_error", 1323 .args_type = "advisory_non_fatal:-a,correctable:-c," 1324 "id:s,error_status:s," 1325 "header0:i?,header1:i?,header2:i?,header3:i?," 1326 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?", 1327 .params = "[-a] [-c] id " 1328 "<error_status> [<tlp header> [<tlp header prefix>]]", 1329 .help = "inject pcie aer error\n\t\t\t" 1330 " -a for advisory non fatal error\n\t\t\t" 1331 " -c for correctable error\n\t\t\t" 1332 "<id> = qdev device id\n\t\t\t" 1333 "<error_status> = error string or 32bit\n\t\t\t" 1334 "<tlb header> = 32bit x 4\n\t\t\t" 1335 "<tlb header prefix> = 32bit x 4", 1336 .cmd = hmp_pcie_aer_inject_error, 1337 }, 1338 1339STEXI 1340@item pcie_aer_inject_error 1341@findex pcie_aer_inject_error 1342Inject PCIe AER error 1343ETEXI 1344 1345 { 1346 .name = "netdev_add", 1347 .args_type = "netdev:O", 1348 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]", 1349 .help = "add host network device", 1350 .cmd = hmp_netdev_add, 1351 .command_completion = netdev_add_completion, 1352 }, 1353 1354STEXI 1355@item netdev_add 1356@findex netdev_add 1357Add host network device. 1358ETEXI 1359 1360 { 1361 .name = "netdev_del", 1362 .args_type = "id:s", 1363 .params = "id", 1364 .help = "remove host network device", 1365 .cmd = hmp_netdev_del, 1366 .command_completion = netdev_del_completion, 1367 }, 1368 1369STEXI 1370@item netdev_del 1371@findex netdev_del 1372Remove host network device. 1373ETEXI 1374 1375 { 1376 .name = "object_add", 1377 .args_type = "object:O", 1378 .params = "[qom-type=]type,id=str[,prop=value][,...]", 1379 .help = "create QOM object", 1380 .cmd = hmp_object_add, 1381 .command_completion = object_add_completion, 1382 }, 1383 1384STEXI 1385@item object_add 1386@findex object_add 1387Create QOM object. 1388ETEXI 1389 1390 { 1391 .name = "object_del", 1392 .args_type = "id:s", 1393 .params = "id", 1394 .help = "destroy QOM object", 1395 .cmd = hmp_object_del, 1396 .command_completion = object_del_completion, 1397 }, 1398 1399STEXI 1400@item object_del 1401@findex object_del 1402Destroy QOM object. 1403ETEXI 1404 1405#ifdef CONFIG_SLIRP 1406 { 1407 .name = "hostfwd_add", 1408 .args_type = "arg1:s,arg2:s?,arg3:s?", 1409 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport", 1410 .help = "redirect TCP or UDP connections from host to guest (requires -net user)", 1411 .cmd = hmp_hostfwd_add, 1412 }, 1413#endif 1414STEXI 1415@item hostfwd_add 1416@findex hostfwd_add 1417Redirect TCP or UDP connections from host to guest (requires -net user). 1418ETEXI 1419 1420#ifdef CONFIG_SLIRP 1421 { 1422 .name = "hostfwd_remove", 1423 .args_type = "arg1:s,arg2:s?,arg3:s?", 1424 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport", 1425 .help = "remove host-to-guest TCP or UDP redirection", 1426 .cmd = hmp_hostfwd_remove, 1427 }, 1428 1429#endif 1430STEXI 1431@item hostfwd_remove 1432@findex hostfwd_remove 1433Remove host-to-guest TCP or UDP redirection. 1434ETEXI 1435 1436 { 1437 .name = "balloon", 1438 .args_type = "value:M", 1439 .params = "target", 1440 .help = "request VM to change its memory allocation (in MB)", 1441 .cmd = hmp_balloon, 1442 }, 1443 1444STEXI 1445@item balloon @var{value} 1446@findex balloon 1447Request VM to change its memory allocation to @var{value} (in MB). 1448ETEXI 1449 1450 { 1451 .name = "set_link", 1452 .args_type = "name:s,up:b", 1453 .params = "name on|off", 1454 .help = "change the link status of a network adapter", 1455 .cmd = hmp_set_link, 1456 .command_completion = set_link_completion, 1457 }, 1458 1459STEXI 1460@item set_link @var{name} [on|off] 1461@findex set_link 1462Switch link @var{name} on (i.e. up) or off (i.e. down). 1463ETEXI 1464 1465 { 1466 .name = "watchdog_action", 1467 .args_type = "action:s", 1468 .params = "[reset|shutdown|poweroff|pause|debug|none]", 1469 .help = "change watchdog action", 1470 .cmd = hmp_watchdog_action, 1471 .command_completion = watchdog_action_completion, 1472 }, 1473 1474STEXI 1475@item watchdog_action 1476@findex watchdog_action 1477Change watchdog action. 1478ETEXI 1479 1480 { 1481 .name = "acl_show", 1482 .args_type = "aclname:s", 1483 .params = "aclname", 1484 .help = "list rules in the access control list", 1485 .cmd = hmp_acl_show, 1486 }, 1487 1488STEXI 1489@item acl_show @var{aclname} 1490@findex acl_show 1491List all the matching rules in the access control list, and the default 1492policy. There are currently two named access control lists, 1493@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client 1494certificate distinguished name, and SASL username respectively. 1495ETEXI 1496 1497 { 1498 .name = "acl_policy", 1499 .args_type = "aclname:s,policy:s", 1500 .params = "aclname allow|deny", 1501 .help = "set default access control list policy", 1502 .cmd = hmp_acl_policy, 1503 }, 1504 1505STEXI 1506@item acl_policy @var{aclname} @code{allow|deny} 1507@findex acl_policy 1508Set the default access control list policy, used in the event that 1509none of the explicit rules match. The default policy at startup is 1510always @code{deny}. 1511ETEXI 1512 1513 { 1514 .name = "acl_add", 1515 .args_type = "aclname:s,match:s,policy:s,index:i?", 1516 .params = "aclname match allow|deny [index]", 1517 .help = "add a match rule to the access control list", 1518 .cmd = hmp_acl_add, 1519 }, 1520 1521STEXI 1522@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}] 1523@findex acl_add 1524Add a match rule to the access control list, allowing or denying access. 1525The match will normally be an exact username or x509 distinguished name, 1526but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to 1527allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will 1528normally be appended to the end of the ACL, but can be inserted 1529earlier in the list if the optional @var{index} parameter is supplied. 1530ETEXI 1531 1532 { 1533 .name = "acl_remove", 1534 .args_type = "aclname:s,match:s", 1535 .params = "aclname match", 1536 .help = "remove a match rule from the access control list", 1537 .cmd = hmp_acl_remove, 1538 }, 1539 1540STEXI 1541@item acl_remove @var{aclname} @var{match} 1542@findex acl_remove 1543Remove the specified match rule from the access control list. 1544ETEXI 1545 1546 { 1547 .name = "acl_reset", 1548 .args_type = "aclname:s", 1549 .params = "aclname", 1550 .help = "reset the access control list", 1551 .cmd = hmp_acl_reset, 1552 }, 1553 1554STEXI 1555@item acl_reset @var{aclname} 1556@findex acl_reset 1557Remove all matches from the access control list, and set the default 1558policy back to @code{deny}. 1559ETEXI 1560 1561 { 1562 .name = "nbd_server_start", 1563 .args_type = "all:-a,writable:-w,uri:s", 1564 .params = "nbd_server_start [-a] [-w] host:port", 1565 .help = "serve block devices on the given host and port", 1566 .cmd = hmp_nbd_server_start, 1567 }, 1568STEXI 1569@item nbd_server_start @var{host}:@var{port} 1570@findex nbd_server_start 1571Start an NBD server on the given host and/or port. If the @option{-a} 1572option is included, all of the virtual machine's block devices that 1573have an inserted media on them are automatically exported; in this case, 1574the @option{-w} option makes the devices writable too. 1575ETEXI 1576 1577 { 1578 .name = "nbd_server_add", 1579 .args_type = "writable:-w,device:B,name:s?", 1580 .params = "nbd_server_add [-w] device [name]", 1581 .help = "export a block device via NBD", 1582 .cmd = hmp_nbd_server_add, 1583 }, 1584STEXI 1585@item nbd_server_add @var{device} [ @var{name} ] 1586@findex nbd_server_add 1587Export a block device through QEMU's NBD server, which must be started 1588beforehand with @command{nbd_server_start}. The @option{-w} option makes the 1589exported device writable too. The export name is controlled by @var{name}, 1590defaulting to @var{device}. 1591ETEXI 1592 1593 { 1594 .name = "nbd_server_remove", 1595 .args_type = "force:-f,name:s", 1596 .params = "nbd_server_remove [-f] name", 1597 .help = "remove an export previously exposed via NBD", 1598 .cmd = hmp_nbd_server_remove, 1599 }, 1600STEXI 1601@item nbd_server_remove [-f] @var{name} 1602@findex nbd_server_remove 1603Stop exporting a block device through QEMU's NBD server, which was 1604previously started with @command{nbd_server_add}. The @option{-f} 1605option forces the server to drop the export immediately even if 1606clients are connected; otherwise the command fails unless there are no 1607clients. 1608ETEXI 1609 1610 { 1611 .name = "nbd_server_stop", 1612 .args_type = "", 1613 .params = "nbd_server_stop", 1614 .help = "stop serving block devices using the NBD protocol", 1615 .cmd = hmp_nbd_server_stop, 1616 }, 1617STEXI 1618@item nbd_server_stop 1619@findex nbd_server_stop 1620Stop the QEMU embedded NBD server. 1621ETEXI 1622 1623 1624#if defined(TARGET_I386) 1625 1626 { 1627 .name = "mce", 1628 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l", 1629 .params = "[-b] cpu bank status mcgstatus addr misc", 1630 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]", 1631 .cmd = hmp_mce, 1632 }, 1633 1634#endif 1635STEXI 1636@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc} 1637@findex mce (x86) 1638Inject an MCE on the given CPU (x86 only). 1639ETEXI 1640 1641 { 1642 .name = "getfd", 1643 .args_type = "fdname:s", 1644 .params = "getfd name", 1645 .help = "receive a file descriptor via SCM rights and assign it a name", 1646 .cmd = hmp_getfd, 1647 }, 1648 1649STEXI 1650@item getfd @var{fdname} 1651@findex getfd 1652If a file descriptor is passed alongside this command using the SCM_RIGHTS 1653mechanism on unix sockets, it is stored using the name @var{fdname} for 1654later use by other monitor commands. 1655ETEXI 1656 1657 { 1658 .name = "closefd", 1659 .args_type = "fdname:s", 1660 .params = "closefd name", 1661 .help = "close a file descriptor previously passed via SCM rights", 1662 .cmd = hmp_closefd, 1663 }, 1664 1665STEXI 1666@item closefd @var{fdname} 1667@findex closefd 1668Close the file descriptor previously assigned to @var{fdname} using the 1669@code{getfd} command. This is only needed if the file descriptor was never 1670used by another monitor command. 1671ETEXI 1672 1673 { 1674 .name = "block_passwd", 1675 .args_type = "device:B,password:s", 1676 .params = "block_passwd device password", 1677 .help = "set the password of encrypted block devices", 1678 .cmd = hmp_block_passwd, 1679 }, 1680 1681STEXI 1682@item block_passwd @var{device} @var{password} 1683@findex block_passwd 1684Set the encrypted device @var{device} password to @var{password} 1685 1686This command is now obsolete and will always return an error since 2.10 1687ETEXI 1688 1689 { 1690 .name = "block_set_io_throttle", 1691 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l", 1692 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr", 1693 .help = "change I/O throttle limits for a block drive", 1694 .cmd = hmp_block_set_io_throttle, 1695 }, 1696 1697STEXI 1698@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr} 1699@findex block_set_io_throttle 1700Change 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}. 1701@var{device} can be a block device name, a qdev ID or a QOM path. 1702ETEXI 1703 1704 { 1705 .name = "set_password", 1706 .args_type = "protocol:s,password:s,connected:s?", 1707 .params = "protocol password action-if-connected", 1708 .help = "set spice/vnc password", 1709 .cmd = hmp_set_password, 1710 }, 1711 1712STEXI 1713@item set_password [ vnc | spice ] password [ action-if-connected ] 1714@findex set_password 1715Change spice/vnc password. Use zero to make the password stay valid 1716forever. @var{action-if-connected} specifies what should happen in 1717case a connection is established: @var{fail} makes the password change 1718fail. @var{disconnect} changes the password and disconnects the 1719client. @var{keep} changes the password and keeps the connection up. 1720@var{keep} is the default. 1721ETEXI 1722 1723 { 1724 .name = "expire_password", 1725 .args_type = "protocol:s,time:s", 1726 .params = "protocol time", 1727 .help = "set spice/vnc password expire-time", 1728 .cmd = hmp_expire_password, 1729 }, 1730 1731STEXI 1732@item expire_password [ vnc | spice ] expire-time 1733@findex expire_password 1734Specify when a password for spice/vnc becomes 1735invalid. @var{expire-time} accepts: 1736 1737@table @var 1738@item now 1739Invalidate password instantly. 1740 1741@item never 1742Password stays valid forever. 1743 1744@item +nsec 1745Password stays valid for @var{nsec} seconds starting now. 1746 1747@item nsec 1748Password is invalidated at the given time. @var{nsec} are the seconds 1749passed since 1970, i.e. unix epoch. 1750 1751@end table 1752ETEXI 1753 1754 { 1755 .name = "chardev-add", 1756 .args_type = "args:s", 1757 .params = "args", 1758 .help = "add chardev", 1759 .cmd = hmp_chardev_add, 1760 .command_completion = chardev_add_completion, 1761 }, 1762 1763STEXI 1764@item chardev-add args 1765@findex chardev-add 1766chardev-add accepts the same parameters as the -chardev command line switch. 1767 1768ETEXI 1769 1770 { 1771 .name = "chardev-change", 1772 .args_type = "id:s,args:s", 1773 .params = "id args", 1774 .help = "change chardev", 1775 .cmd = hmp_chardev_change, 1776 }, 1777 1778STEXI 1779@item chardev-change args 1780@findex chardev-change 1781chardev-change accepts existing chardev @var{id} and then the same arguments 1782as the -chardev command line switch (except for "id"). 1783 1784ETEXI 1785 1786 { 1787 .name = "chardev-remove", 1788 .args_type = "id:s", 1789 .params = "id", 1790 .help = "remove chardev", 1791 .cmd = hmp_chardev_remove, 1792 .command_completion = chardev_remove_completion, 1793 }, 1794 1795STEXI 1796@item chardev-remove id 1797@findex chardev-remove 1798Removes the chardev @var{id}. 1799 1800ETEXI 1801 1802 { 1803 .name = "chardev-send-break", 1804 .args_type = "id:s", 1805 .params = "id", 1806 .help = "send a break on chardev", 1807 .cmd = hmp_chardev_send_break, 1808 .command_completion = chardev_remove_completion, 1809 }, 1810 1811STEXI 1812@item chardev-send-break id 1813@findex chardev-send-break 1814Send a break on the chardev @var{id}. 1815 1816ETEXI 1817 1818 { 1819 .name = "qemu-io", 1820 .args_type = "device:B,command:s", 1821 .params = "[device] \"[command]\"", 1822 .help = "run a qemu-io command on a block device", 1823 .cmd = hmp_qemu_io, 1824 }, 1825 1826STEXI 1827@item qemu-io @var{device} @var{command} 1828@findex qemu-io 1829Executes a qemu-io command on the given block device. 1830 1831ETEXI 1832 1833 { 1834 .name = "cpu-add", 1835 .args_type = "id:i", 1836 .params = "id", 1837 .help = "add cpu", 1838 .cmd = hmp_cpu_add, 1839 }, 1840 1841STEXI 1842@item cpu-add @var{id} 1843@findex cpu-add 1844Add CPU with id @var{id} 1845ETEXI 1846 1847 { 1848 .name = "qom-list", 1849 .args_type = "path:s?", 1850 .params = "path", 1851 .help = "list QOM properties", 1852 .cmd = hmp_qom_list, 1853 .flags = "p", 1854 }, 1855 1856STEXI 1857@item qom-list [@var{path}] 1858Print QOM properties of object at location @var{path} 1859ETEXI 1860 1861 { 1862 .name = "qom-set", 1863 .args_type = "path:s,property:s,value:s", 1864 .params = "path property value", 1865 .help = "set QOM property", 1866 .cmd = hmp_qom_set, 1867 .flags = "p", 1868 }, 1869 1870STEXI 1871@item qom-set @var{path} @var{property} @var{value} 1872Set QOM property @var{property} of object at location @var{path} to value @var{value} 1873ETEXI 1874 1875 { 1876 .name = "info", 1877 .args_type = "item:s?", 1878 .params = "[subcommand]", 1879 .help = "show various information about the system state", 1880 .cmd = hmp_info_help, 1881 .sub_table = info_cmds, 1882 .flags = "p", 1883 }, 1884 1885STEXI 1886@end table 1887ETEXI 1888