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 }, 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 .cmd = hmp_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 .cmd = hmp_quit, 51 }, 52 53STEXI 54@item q or quit 55@findex quit 56Quit the emulator. 57ETEXI 58 59 { 60 .name = "block_resize", 61 .args_type = "device:B,size:o", 62 .params = "device size", 63 .help = "resize a block image", 64 .cmd = hmp_block_resize, 65 }, 66 67STEXI 68@item block_resize 69@findex block_resize 70Resize a block image while a guest is running. Usually requires guest 71action to see the updated size. Resize to a lower size is supported, 72but should be used with extreme caution. Note that this command only 73resizes image files, it can not resize block devices like LVM volumes. 74ETEXI 75 76 { 77 .name = "block_stream", 78 .args_type = "device:B,speed:o?,base:s?", 79 .params = "device [speed [base]]", 80 .help = "copy data from a backing file into a block device", 81 .cmd = hmp_block_stream, 82 }, 83 84STEXI 85@item block_stream 86@findex block_stream 87Copy data from a backing file into a block device. 88ETEXI 89 90 { 91 .name = "block_job_set_speed", 92 .args_type = "device:B,speed:o", 93 .params = "device speed", 94 .help = "set maximum speed for a background block operation", 95 .cmd = hmp_block_job_set_speed, 96 }, 97 98STEXI 99@item block_job_set_speed 100@findex block_job_set_speed 101Set maximum speed for a background block operation. 102ETEXI 103 104 { 105 .name = "block_job_cancel", 106 .args_type = "force:-f,device:B", 107 .params = "[-f] device", 108 .help = "stop an active background block operation (use -f" 109 "\n\t\t\t if you want to abort the operation immediately" 110 "\n\t\t\t instead of keep running until data is in sync)", 111 .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 .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 .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 .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 .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 .cmd = hmp_drive_del, 183 }, 184 185STEXI 186@item drive_del @var{device} 187@findex drive_del 188Remove host block device. The result is that guest generated IO is no longer 189submitted against the host device underlying the disk. Once a drive has 190been deleted, the QEMU Block layer returns -EIO which results in IO 191errors in the guest for applications that are reading/writing to the device. 192These errors are always reported to the guest, regardless of the drive's error 193actions (drive options rerror, werror). 194ETEXI 195 196 { 197 .name = "change", 198 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?", 199 .params = "device filename [format [read-only-mode]]", 200 .help = "change a removable medium, optional format", 201 .cmd = hmp_change, 202 }, 203 204STEXI 205@item change @var{device} @var{setting} 206@findex change 207Change the configuration of a device. 208 209@table @option 210@item change @var{diskdevice} @var{filename} [@var{format} [@var{read-only-mode}]] 211Change the medium for a removable disk device to point to @var{filename}. eg 212 213@example 214(qemu) change ide1-cd0 /path/to/some.iso 215@end example 216 217@var{format} is optional. 218 219@var{read-only-mode} may be used to change the read-only status of the device. 220It accepts the following values: 221 222@table @var 223@item retain 224Retains the current status; this is the default. 225 226@item read-only 227Makes the device read-only. 228 229@item read-write 230Makes the device writable. 231@end table 232 233@item change vnc @var{display},@var{options} 234Change the configuration of the VNC server. The valid syntax for @var{display} 235and @var{options} are described at @ref{sec_invocation}. eg 236 237@example 238(qemu) change vnc localhost:1 239@end example 240 241@item change vnc password [@var{password}] 242 243Change the password associated with the VNC server. If the new password is not 244supplied, the monitor will prompt for it to be entered. VNC passwords are only 245significant up to 8 letters. eg 246 247@example 248(qemu) change vnc password 249Password: ******** 250@end example 251 252@end table 253ETEXI 254 255 { 256 .name = "screendump", 257 .args_type = "filename:F,device:s?,head:i?", 258 .params = "filename [device [head]]", 259 .help = "save screen from head 'head' of display device 'device' " 260 "into PPM image 'filename'", 261 .cmd = hmp_screendump, 262 }, 263 264STEXI 265@item screendump @var{filename} 266@findex screendump 267Save screen into PPM image @var{filename}. 268ETEXI 269 270 { 271 .name = "logfile", 272 .args_type = "filename:F", 273 .params = "filename", 274 .help = "output logs to 'filename'", 275 .cmd = hmp_logfile, 276 }, 277 278STEXI 279@item logfile @var{filename} 280@findex logfile 281Output logs to @var{filename}. 282ETEXI 283 284 { 285 .name = "trace-event", 286 .args_type = "name:s,option:b,vcpu:i?", 287 .params = "name on|off [vcpu]", 288 .help = "changes status of a specific trace event " 289 "(vcpu: vCPU to set, default is all)", 290 .cmd = hmp_trace_event, 291 .command_completion = trace_event_completion, 292 }, 293 294STEXI 295@item trace-event 296@findex trace-event 297changes status of a trace event 298ETEXI 299 300#if defined(CONFIG_TRACE_SIMPLE) 301 { 302 .name = "trace-file", 303 .args_type = "op:s?,arg:F?", 304 .params = "on|off|flush|set [arg]", 305 .help = "open, close, or flush trace file, or set a new file name", 306 .cmd = hmp_trace_file, 307 }, 308 309STEXI 310@item trace-file on|off|flush 311@findex trace-file 312Open, close, or flush the trace file. If no argument is given, the status of the trace file is displayed. 313ETEXI 314#endif 315 316 { 317 .name = "log", 318 .args_type = "items:s", 319 .params = "item1[,...]", 320 .help = "activate logging of the specified items", 321 .cmd = hmp_log, 322 }, 323 324STEXI 325@item log @var{item1}[,...] 326@findex log 327Activate logging of the specified items. 328ETEXI 329 330 { 331 .name = "savevm", 332 .args_type = "name:s?", 333 .params = "[tag|id]", 334 .help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created", 335 .cmd = hmp_savevm, 336 }, 337 338STEXI 339@item savevm [@var{tag}|@var{id}] 340@findex savevm 341Create a snapshot of the whole virtual machine. If @var{tag} is 342provided, it is used as human readable identifier. If there is already 343a snapshot with the same tag or ID, it is replaced. More info at 344@ref{vm_snapshots}. 345ETEXI 346 347 { 348 .name = "loadvm", 349 .args_type = "name:s", 350 .params = "tag|id", 351 .help = "restore a VM snapshot from its tag or id", 352 .cmd = hmp_loadvm, 353 .command_completion = loadvm_completion, 354 }, 355 356STEXI 357@item loadvm @var{tag}|@var{id} 358@findex loadvm 359Set the whole virtual machine to the snapshot identified by the tag 360@var{tag} or the unique snapshot ID @var{id}. 361ETEXI 362 363 { 364 .name = "delvm", 365 .args_type = "name:s", 366 .params = "tag|id", 367 .help = "delete a VM snapshot from its tag or id", 368 .cmd = hmp_delvm, 369 .command_completion = delvm_completion, 370 }, 371 372STEXI 373@item delvm @var{tag}|@var{id} 374@findex delvm 375Delete the snapshot identified by @var{tag} or @var{id}. 376ETEXI 377 378 { 379 .name = "singlestep", 380 .args_type = "option:s?", 381 .params = "[on|off]", 382 .help = "run emulation in singlestep mode or switch to normal mode", 383 .cmd = hmp_singlestep, 384 }, 385 386STEXI 387@item singlestep [off] 388@findex singlestep 389Run the emulation in single step mode. 390If called with option off, the emulation returns to normal mode. 391ETEXI 392 393 { 394 .name = "stop", 395 .args_type = "", 396 .params = "", 397 .help = "stop emulation", 398 .cmd = hmp_stop, 399 }, 400 401STEXI 402@item stop 403@findex stop 404Stop emulation. 405ETEXI 406 407 { 408 .name = "c|cont", 409 .args_type = "", 410 .params = "", 411 .help = "resume emulation", 412 .cmd = hmp_cont, 413 }, 414 415STEXI 416@item c or cont 417@findex cont 418Resume emulation. 419ETEXI 420 421 { 422 .name = "system_wakeup", 423 .args_type = "", 424 .params = "", 425 .help = "wakeup guest from suspend", 426 .cmd = hmp_system_wakeup, 427 }, 428 429STEXI 430@item system_wakeup 431@findex system_wakeup 432Wakeup guest from suspend. 433ETEXI 434 435 { 436 .name = "gdbserver", 437 .args_type = "device:s?", 438 .params = "[device]", 439 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'", 440 .cmd = hmp_gdbserver, 441 }, 442 443STEXI 444@item gdbserver [@var{port}] 445@findex gdbserver 446Start gdbserver session (default @var{port}=1234) 447ETEXI 448 449 { 450 .name = "x", 451 .args_type = "fmt:/,addr:l", 452 .params = "/fmt addr", 453 .help = "virtual memory dump starting at 'addr'", 454 .cmd = hmp_memory_dump, 455 }, 456 457STEXI 458@item x/fmt @var{addr} 459@findex x 460Virtual memory dump starting at @var{addr}. 461ETEXI 462 463 { 464 .name = "xp", 465 .args_type = "fmt:/,addr:l", 466 .params = "/fmt addr", 467 .help = "physical memory dump starting at 'addr'", 468 .cmd = hmp_physical_memory_dump, 469 }, 470 471STEXI 472@item xp /@var{fmt} @var{addr} 473@findex xp 474Physical memory dump starting at @var{addr}. 475 476@var{fmt} is a format which tells the command how to format the 477data. Its syntax is: @option{/@{count@}@{format@}@{size@}} 478 479@table @var 480@item count 481is the number of items to be dumped. 482 483@item format 484can be x (hex), d (signed decimal), u (unsigned decimal), o (octal), 485c (char) or i (asm instruction). 486 487@item size 488can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86, 489@code{h} or @code{w} can be specified with the @code{i} format to 490respectively select 16 or 32 bit code instruction size. 491 492@end table 493 494Examples: 495@itemize 496@item 497Dump 10 instructions at the current instruction pointer: 498@example 499(qemu) x/10i $eip 5000x90107063: ret 5010x90107064: sti 5020x90107065: lea 0x0(%esi,1),%esi 5030x90107069: lea 0x0(%edi,1),%edi 5040x90107070: ret 5050x90107071: jmp 0x90107080 5060x90107073: nop 5070x90107074: nop 5080x90107075: nop 5090x90107076: nop 510@end example 511 512@item 513Dump 80 16 bit values at the start of the video memory. 514@smallexample 515(qemu) xp/80hx 0xb8000 5160x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42 5170x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41 5180x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72 5190x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73 5200x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20 5210x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720 5220x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5230x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5240x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 5250x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 526@end smallexample 527@end itemize 528ETEXI 529 530 { 531 .name = "gpa2hva", 532 .args_type = "addr:l", 533 .params = "addr", 534 .help = "print the host virtual address corresponding to a guest physical address", 535 .cmd = hmp_gpa2hva, 536 }, 537 538STEXI 539@item gpa2hva @var{addr} 540@findex gpa2hva 541Print the host virtual address at which the guest's physical address @var{addr} 542is mapped. 543ETEXI 544 545#ifdef CONFIG_LINUX 546 { 547 .name = "gpa2hpa", 548 .args_type = "addr:l", 549 .params = "addr", 550 .help = "print the host physical address corresponding to a guest physical address", 551 .cmd = hmp_gpa2hpa, 552 }, 553#endif 554 555STEXI 556@item gpa2hpa @var{addr} 557@findex gpa2hpa 558Print the host physical address at which the guest's physical address @var{addr} 559is mapped. 560ETEXI 561 562 { 563 .name = "p|print", 564 .args_type = "fmt:/,val:l", 565 .params = "/fmt expr", 566 .help = "print expression value (use $reg for CPU register access)", 567 .cmd = do_print, 568 }, 569 570STEXI 571@item p or print/@var{fmt} @var{expr} 572@findex print 573Print expression value. Only the @var{format} part of @var{fmt} is 574used. 575ETEXI 576 577 { 578 .name = "i", 579 .args_type = "fmt:/,addr:i,index:i.", 580 .params = "/fmt addr", 581 .help = "I/O port read", 582 .cmd = hmp_ioport_read, 583 }, 584 585STEXI 586@item i/@var{fmt} @var{addr} [.@var{index}] 587@findex i 588Read I/O port. 589ETEXI 590 591 { 592 .name = "o", 593 .args_type = "fmt:/,addr:i,val:i", 594 .params = "/fmt addr value", 595 .help = "I/O port write", 596 .cmd = hmp_ioport_write, 597 }, 598 599STEXI 600@item o/@var{fmt} @var{addr} @var{val} 601@findex o 602Write to I/O port. 603ETEXI 604 605 { 606 .name = "sendkey", 607 .args_type = "keys:s,hold-time:i?", 608 .params = "keys [hold_ms]", 609 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)", 610 .cmd = hmp_sendkey, 611 .command_completion = sendkey_completion, 612 }, 613 614STEXI 615@item sendkey @var{keys} 616@findex sendkey 617Send @var{keys} to the guest. @var{keys} could be the name of the 618key or the raw value in hexadecimal format. Use @code{-} to press 619several keys simultaneously. Example: 620@example 621sendkey ctrl-alt-f1 622@end example 623 624This command is useful to send keys that your graphical user interface 625intercepts at low level, such as @code{ctrl-alt-f1} in X Window. 626ETEXI 627 628 { 629 .name = "system_reset", 630 .args_type = "", 631 .params = "", 632 .help = "reset the system", 633 .cmd = hmp_system_reset, 634 }, 635 636STEXI 637@item system_reset 638@findex system_reset 639Reset the system. 640ETEXI 641 642 { 643 .name = "system_powerdown", 644 .args_type = "", 645 .params = "", 646 .help = "send system power down event", 647 .cmd = hmp_system_powerdown, 648 }, 649 650STEXI 651@item system_powerdown 652@findex system_powerdown 653Power down the system (if supported). 654ETEXI 655 656 { 657 .name = "sum", 658 .args_type = "start:i,size:i", 659 .params = "addr size", 660 .help = "compute the checksum of a memory region", 661 .cmd = hmp_sum, 662 }, 663 664STEXI 665@item sum @var{addr} @var{size} 666@findex sum 667Compute the checksum of a memory region. 668ETEXI 669 670 { 671 .name = "device_add", 672 .args_type = "device:O", 673 .params = "driver[,prop=value][,...]", 674 .help = "add device, like -device on the command line", 675 .cmd = hmp_device_add, 676 .command_completion = device_add_completion, 677 }, 678 679STEXI 680@item device_add @var{config} 681@findex device_add 682Add device. 683ETEXI 684 685 { 686 .name = "device_del", 687 .args_type = "id:s", 688 .params = "device", 689 .help = "remove device", 690 .cmd = hmp_device_del, 691 .command_completion = device_del_completion, 692 }, 693 694STEXI 695@item device_del @var{id} 696@findex device_del 697Remove device @var{id}. @var{id} may be a short ID 698or a QOM object path. 699ETEXI 700 701 { 702 .name = "cpu", 703 .args_type = "index:i", 704 .params = "index", 705 .help = "set the default CPU", 706 .cmd = hmp_cpu, 707 }, 708 709STEXI 710@item cpu @var{index} 711@findex cpu 712Set the default CPU. 713ETEXI 714 715 { 716 .name = "mouse_move", 717 .args_type = "dx_str:s,dy_str:s,dz_str:s?", 718 .params = "dx dy [dz]", 719 .help = "send mouse move events", 720 .cmd = hmp_mouse_move, 721 }, 722 723STEXI 724@item mouse_move @var{dx} @var{dy} [@var{dz}] 725@findex mouse_move 726Move the active mouse to the specified coordinates @var{dx} @var{dy} 727with optional scroll axis @var{dz}. 728ETEXI 729 730 { 731 .name = "mouse_button", 732 .args_type = "button_state:i", 733 .params = "state", 734 .help = "change mouse button state (1=L, 2=M, 4=R)", 735 .cmd = hmp_mouse_button, 736 }, 737 738STEXI 739@item mouse_button @var{val} 740@findex mouse_button 741Change the active mouse button state @var{val} (1=L, 2=M, 4=R). 742ETEXI 743 744 { 745 .name = "mouse_set", 746 .args_type = "index:i", 747 .params = "index", 748 .help = "set which mouse device receives events", 749 .cmd = hmp_mouse_set, 750 }, 751 752STEXI 753@item mouse_set @var{index} 754@findex mouse_set 755Set which mouse device receives events at given @var{index}, index 756can be obtained with 757@example 758info mice 759@end example 760ETEXI 761 762 { 763 .name = "wavcapture", 764 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?", 765 .params = "path [frequency [bits [channels]]]", 766 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)", 767 .cmd = hmp_wavcapture, 768 }, 769STEXI 770@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]] 771@findex wavcapture 772Capture audio into @var{filename}. Using sample rate @var{frequency} 773bits per sample @var{bits} and number of channels @var{channels}. 774 775Defaults: 776@itemize @minus 777@item Sample rate = 44100 Hz - CD quality 778@item Bits = 16 779@item Number of channels = 2 - Stereo 780@end itemize 781ETEXI 782 783 { 784 .name = "stopcapture", 785 .args_type = "n:i", 786 .params = "capture index", 787 .help = "stop capture", 788 .cmd = hmp_stopcapture, 789 }, 790STEXI 791@item stopcapture @var{index} 792@findex stopcapture 793Stop capture with a given @var{index}, index can be obtained with 794@example 795info capture 796@end example 797ETEXI 798 799 { 800 .name = "memsave", 801 .args_type = "val:l,size:i,filename:s", 802 .params = "addr size file", 803 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'", 804 .cmd = hmp_memsave, 805 }, 806 807STEXI 808@item memsave @var{addr} @var{size} @var{file} 809@findex memsave 810save to disk virtual memory dump starting at @var{addr} of size @var{size}. 811ETEXI 812 813 { 814 .name = "pmemsave", 815 .args_type = "val:l,size:i,filename:s", 816 .params = "addr size file", 817 .help = "save to disk physical memory dump starting at 'addr' of size 'size'", 818 .cmd = hmp_pmemsave, 819 }, 820 821STEXI 822@item pmemsave @var{addr} @var{size} @var{file} 823@findex pmemsave 824save to disk physical memory dump starting at @var{addr} of size @var{size}. 825ETEXI 826 827 { 828 .name = "boot_set", 829 .args_type = "bootdevice:s", 830 .params = "bootdevice", 831 .help = "define new values for the boot device list", 832 .cmd = hmp_boot_set, 833 }, 834 835STEXI 836@item boot_set @var{bootdevicelist} 837@findex boot_set 838Define new values for the boot device list. Those values will override 839the values specified on the command line through the @code{-boot} option. 840 841The values that can be specified here depend on the machine type, but are 842the same that can be specified in the @code{-boot} command line option. 843ETEXI 844 845 { 846 .name = "nmi", 847 .args_type = "", 848 .params = "", 849 .help = "inject an NMI", 850 .cmd = hmp_nmi, 851 }, 852STEXI 853@item nmi @var{cpu} 854@findex nmi 855Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64). 856 857ETEXI 858 859 { 860 .name = "ringbuf_write", 861 .args_type = "device:s,data:s", 862 .params = "device data", 863 .help = "Write to a ring buffer character device", 864 .cmd = hmp_ringbuf_write, 865 .command_completion = ringbuf_write_completion, 866 }, 867 868STEXI 869@item ringbuf_write @var{device} @var{data} 870@findex ringbuf_write 871Write @var{data} to ring buffer character device @var{device}. 872@var{data} must be a UTF-8 string. 873 874ETEXI 875 876 { 877 .name = "ringbuf_read", 878 .args_type = "device:s,size:i", 879 .params = "device size", 880 .help = "Read from a ring buffer character device", 881 .cmd = hmp_ringbuf_read, 882 .command_completion = ringbuf_write_completion, 883 }, 884 885STEXI 886@item ringbuf_read @var{device} 887@findex ringbuf_read 888Read and print up to @var{size} bytes from ring buffer character 889device @var{device}. 890Certain non-printable characters are printed \uXXXX, where XXXX is the 891character code in hexadecimal. Character \ is printed \\. 892Bug: can screw up when the buffer contains invalid UTF-8 sequences, 893NUL characters, after the ring buffer lost data, and when reading 894stops because the size limit is reached. 895 896ETEXI 897 898 { 899 .name = "migrate", 900 .args_type = "detach:-d,blk:-b,inc:-i,resume:-r,uri:s", 901 .params = "[-d] [-b] [-i] [-r] uri", 902 .help = "migrate to URI (using -d to not wait for completion)" 903 "\n\t\t\t -b for migration without shared storage with" 904 " full copy of disk\n\t\t\t -i for migration without " 905 "shared storage with incremental copy of disk " 906 "(base image shared between src and destination)" 907 "\n\t\t\t -r to resume a paused migration", 908 .cmd = hmp_migrate, 909 }, 910 911 912STEXI 913@item migrate [-d] [-b] [-i] @var{uri} 914@findex migrate 915Migrate to @var{uri} (using -d to not wait for completion). 916 -b for migration with full copy of disk 917 -i for migration with incremental copy of disk (base image is shared) 918ETEXI 919 920 { 921 .name = "migrate_cancel", 922 .args_type = "", 923 .params = "", 924 .help = "cancel the current VM migration", 925 .cmd = hmp_migrate_cancel, 926 }, 927 928STEXI 929@item migrate_cancel 930@findex migrate_cancel 931Cancel the current VM migration. 932ETEXI 933 934 { 935 .name = "migrate_continue", 936 .args_type = "state:s", 937 .params = "state", 938 .help = "Continue migration from the given paused state", 939 .cmd = hmp_migrate_continue, 940 }, 941STEXI 942@item migrate_continue @var{state} 943@findex migrate_continue 944Continue migration from the paused state @var{state} 945ETEXI 946 947 { 948 .name = "migrate_incoming", 949 .args_type = "uri:s", 950 .params = "uri", 951 .help = "Continue an incoming migration from an -incoming defer", 952 .cmd = hmp_migrate_incoming, 953 }, 954 955STEXI 956@item migrate_incoming @var{uri} 957@findex migrate_incoming 958Continue an incoming migration using the @var{uri} (that has the same syntax 959as the -incoming option). 960ETEXI 961 962 { 963 .name = "migrate_recover", 964 .args_type = "uri:s", 965 .params = "uri", 966 .help = "Continue a paused incoming postcopy migration", 967 .cmd = hmp_migrate_recover, 968 }, 969 970STEXI 971@item migrate_recover @var{uri} 972@findex migrate_recover 973Continue a paused incoming postcopy migration using the @var{uri}. 974ETEXI 975 976 { 977 .name = "migrate_pause", 978 .args_type = "", 979 .params = "", 980 .help = "Pause an ongoing migration (postcopy-only)", 981 .cmd = hmp_migrate_pause, 982 }, 983 984STEXI 985@item migrate_pause 986@findex migrate_pause 987Pause an ongoing migration. Currently it only supports postcopy. 988ETEXI 989 990 { 991 .name = "migrate_set_cache_size", 992 .args_type = "value:o", 993 .params = "value", 994 .help = "set cache size (in bytes) for XBZRLE migrations," 995 "the cache size will be rounded down to the nearest " 996 "power of 2.\n" 997 "The cache size affects the number of cache misses." 998 "In case of a high cache miss ratio you need to increase" 999 " the cache size", 1000 .cmd = hmp_migrate_set_cache_size, 1001 }, 1002 1003STEXI 1004@item migrate_set_cache_size @var{value} 1005@findex migrate_set_cache_size 1006Set cache size to @var{value} (in bytes) for xbzrle migrations. 1007ETEXI 1008 1009 { 1010 .name = "migrate_set_speed", 1011 .args_type = "value:o", 1012 .params = "value", 1013 .help = "set maximum speed (in bytes) for migrations. " 1014 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T", 1015 .cmd = hmp_migrate_set_speed, 1016 }, 1017 1018STEXI 1019@item migrate_set_speed @var{value} 1020@findex migrate_set_speed 1021Set maximum speed to @var{value} (in bytes) for migrations. 1022ETEXI 1023 1024 { 1025 .name = "migrate_set_downtime", 1026 .args_type = "value:T", 1027 .params = "value", 1028 .help = "set maximum tolerated downtime (in seconds) for migrations", 1029 .cmd = hmp_migrate_set_downtime, 1030 }, 1031 1032STEXI 1033@item migrate_set_downtime @var{second} 1034@findex migrate_set_downtime 1035Set maximum tolerated downtime (in seconds) for migration. 1036ETEXI 1037 1038 { 1039 .name = "migrate_set_capability", 1040 .args_type = "capability:s,state:b", 1041 .params = "capability state", 1042 .help = "Enable/Disable the usage of a capability for migration", 1043 .cmd = hmp_migrate_set_capability, 1044 .command_completion = migrate_set_capability_completion, 1045 }, 1046 1047STEXI 1048@item migrate_set_capability @var{capability} @var{state} 1049@findex migrate_set_capability 1050Enable/Disable the usage of a capability @var{capability} for migration. 1051ETEXI 1052 1053 { 1054 .name = "migrate_set_parameter", 1055 .args_type = "parameter:s,value:s", 1056 .params = "parameter value", 1057 .help = "Set the parameter for migration", 1058 .cmd = hmp_migrate_set_parameter, 1059 .command_completion = migrate_set_parameter_completion, 1060 }, 1061 1062STEXI 1063@item migrate_set_parameter @var{parameter} @var{value} 1064@findex migrate_set_parameter 1065Set the parameter @var{parameter} for migration. 1066ETEXI 1067 1068 { 1069 .name = "migrate_start_postcopy", 1070 .args_type = "", 1071 .params = "", 1072 .help = "Followup to a migration command to switch the migration" 1073 " to postcopy mode. The postcopy-ram capability must " 1074 "be set on both source and destination before the " 1075 "original migration command .", 1076 .cmd = hmp_migrate_start_postcopy, 1077 }, 1078 1079STEXI 1080@item migrate_start_postcopy 1081@findex migrate_start_postcopy 1082Switch in-progress migration to postcopy mode. Ignored after the end of 1083migration (or once already in postcopy). 1084ETEXI 1085 1086 { 1087 .name = "x_colo_lost_heartbeat", 1088 .args_type = "", 1089 .params = "", 1090 .help = "Tell COLO that heartbeat is lost,\n\t\t\t" 1091 "a failover or takeover is needed.", 1092 .cmd = hmp_x_colo_lost_heartbeat, 1093 }, 1094 1095STEXI 1096@item x_colo_lost_heartbeat 1097@findex x_colo_lost_heartbeat 1098Tell COLO that heartbeat is lost, a failover or takeover is needed. 1099ETEXI 1100 1101 { 1102 .name = "client_migrate_info", 1103 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", 1104 .params = "protocol hostname port tls-port cert-subject", 1105 .help = "set migration information for remote display", 1106 .cmd = hmp_client_migrate_info, 1107 }, 1108 1109STEXI 1110@item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject} 1111@findex client_migrate_info 1112Set migration information for remote display. This makes the server 1113ask the client to automatically reconnect using the new parameters 1114once migration finished successfully. Only implemented for SPICE. 1115ETEXI 1116 1117 { 1118 .name = "dump-guest-memory", 1119 .args_type = "paging:-p,detach:-d,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:i?,length:i?", 1120 .params = "[-p] [-d] [-z|-l|-s] filename [begin length]", 1121 .help = "dump guest memory into file 'filename'.\n\t\t\t" 1122 "-p: do paging to get guest's memory mapping.\n\t\t\t" 1123 "-d: return immediately (do not wait for completion).\n\t\t\t" 1124 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t" 1125 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t" 1126 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t" 1127 "begin: the starting physical address.\n\t\t\t" 1128 "length: the memory size, in bytes.", 1129 .cmd = hmp_dump_guest_memory, 1130 }, 1131 1132 1133STEXI 1134@item dump-guest-memory [-p] @var{filename} @var{begin} @var{length} 1135@item dump-guest-memory [-z|-l|-s] @var{filename} 1136@findex dump-guest-memory 1137Dump guest memory to @var{protocol}. The file can be processed with crash or 1138gdb. Without -z|-l|-s, the dump format is ELF. 1139 -p: do paging to get guest's memory mapping. 1140 -z: dump in kdump-compressed format, with zlib compression. 1141 -l: dump in kdump-compressed format, with lzo compression. 1142 -s: dump in kdump-compressed format, with snappy compression. 1143 filename: dump file name. 1144 begin: the starting physical address. It's optional, and should be 1145 specified together with length. 1146 length: the memory size, in bytes. It's optional, and should be specified 1147 together with begin. 1148ETEXI 1149 1150#if defined(TARGET_S390X) 1151 { 1152 .name = "dump-skeys", 1153 .args_type = "filename:F", 1154 .params = "", 1155 .help = "Save guest storage keys into file 'filename'.\n", 1156 .cmd = hmp_dump_skeys, 1157 }, 1158#endif 1159 1160STEXI 1161@item dump-skeys @var{filename} 1162@findex dump-skeys 1163Save guest storage keys to a file. 1164ETEXI 1165 1166#if defined(TARGET_S390X) 1167 { 1168 .name = "migration_mode", 1169 .args_type = "mode:i", 1170 .params = "mode", 1171 .help = "Enables or disables migration mode\n", 1172 .cmd = hmp_migrationmode, 1173 }, 1174#endif 1175 1176STEXI 1177@item migration_mode @var{mode} 1178@findex migration_mode 1179Enables or disables migration mode. 1180ETEXI 1181 1182 { 1183 .name = "snapshot_blkdev", 1184 .args_type = "reuse:-n,device:B,snapshot-file:s?,format:s?", 1185 .params = "[-n] device [new-image-file] [format]", 1186 .help = "initiates a live snapshot\n\t\t\t" 1187 "of device. If a new image file is specified, the\n\t\t\t" 1188 "new image file will become the new root image.\n\t\t\t" 1189 "If format is specified, the snapshot file will\n\t\t\t" 1190 "be created in that format.\n\t\t\t" 1191 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t" 1192 "to reuse the image found in new-image-file, instead of\n\t\t\t" 1193 "recreating it from scratch.", 1194 .cmd = hmp_snapshot_blkdev, 1195 }, 1196 1197STEXI 1198@item snapshot_blkdev 1199@findex snapshot_blkdev 1200Snapshot device, using snapshot file as target if provided 1201ETEXI 1202 1203 { 1204 .name = "snapshot_blkdev_internal", 1205 .args_type = "device:B,name:s", 1206 .params = "device name", 1207 .help = "take an internal snapshot of device.\n\t\t\t" 1208 "The format of the image used by device must\n\t\t\t" 1209 "support it, such as qcow2.\n\t\t\t", 1210 .cmd = hmp_snapshot_blkdev_internal, 1211 }, 1212 1213STEXI 1214@item snapshot_blkdev_internal 1215@findex snapshot_blkdev_internal 1216Take an internal snapshot on device if it support 1217ETEXI 1218 1219 { 1220 .name = "snapshot_delete_blkdev_internal", 1221 .args_type = "device:B,name:s,id:s?", 1222 .params = "device name [id]", 1223 .help = "delete an internal snapshot of device.\n\t\t\t" 1224 "If id is specified, qemu will try delete\n\t\t\t" 1225 "the snapshot matching both id and name.\n\t\t\t" 1226 "The format of the image used by device must\n\t\t\t" 1227 "support it, such as qcow2.\n\t\t\t", 1228 .cmd = hmp_snapshot_delete_blkdev_internal, 1229 }, 1230 1231STEXI 1232@item snapshot_delete_blkdev_internal 1233@findex snapshot_delete_blkdev_internal 1234Delete an internal snapshot on device if it support 1235ETEXI 1236 1237 { 1238 .name = "drive_mirror", 1239 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?", 1240 .params = "[-n] [-f] device target [format]", 1241 .help = "initiates live storage\n\t\t\t" 1242 "migration for a device. The device's contents are\n\t\t\t" 1243 "copied to the new image file, including data that\n\t\t\t" 1244 "is written after the command is started.\n\t\t\t" 1245 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1246 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1247 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1248 "so that the result does not need a backing file.\n\t\t\t", 1249 .cmd = hmp_drive_mirror, 1250 }, 1251STEXI 1252@item drive_mirror 1253@findex drive_mirror 1254Start mirroring a block device's writes to a new destination, 1255using the specified target. 1256ETEXI 1257 1258 { 1259 .name = "drive_backup", 1260 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?", 1261 .params = "[-n] [-f] [-c] device target [format]", 1262 .help = "initiates a point-in-time\n\t\t\t" 1263 "copy for a device. The device's contents are\n\t\t\t" 1264 "copied to the new image file, excluding data that\n\t\t\t" 1265 "is written after the command is started.\n\t\t\t" 1266 "The -n flag requests QEMU to reuse the image found\n\t\t\t" 1267 "in new-image-file, instead of recreating it from scratch.\n\t\t\t" 1268 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t" 1269 "so that the result does not need a backing file.\n\t\t\t" 1270 "The -c flag requests QEMU to compress backup data\n\t\t\t" 1271 "(if the target format supports it).\n\t\t\t", 1272 .cmd = hmp_drive_backup, 1273 }, 1274STEXI 1275@item drive_backup 1276@findex drive_backup 1277Start a point-in-time copy of a block device to a specificed target. 1278ETEXI 1279 1280 { 1281 .name = "drive_add", 1282 .args_type = "node:-n,pci_addr:s,opts:s", 1283 .params = "[-n] [[<domain>:]<bus>:]<slot>\n" 1284 "[file=file][,if=type][,bus=n]\n" 1285 "[,unit=m][,media=d][,index=i]\n" 1286 "[,snapshot=on|off][,cache=on|off]\n" 1287 "[,readonly=on|off][,copy-on-read=on|off]", 1288 .help = "add drive to PCI storage controller", 1289 .cmd = hmp_drive_add, 1290 }, 1291 1292STEXI 1293@item drive_add 1294@findex drive_add 1295Add drive to PCI storage controller. 1296ETEXI 1297 1298 { 1299 .name = "pcie_aer_inject_error", 1300 .args_type = "advisory_non_fatal:-a,correctable:-c," 1301 "id:s,error_status:s," 1302 "header0:i?,header1:i?,header2:i?,header3:i?," 1303 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?", 1304 .params = "[-a] [-c] id " 1305 "<error_status> [<tlp header> [<tlp header prefix>]]", 1306 .help = "inject pcie aer error\n\t\t\t" 1307 " -a for advisory non fatal error\n\t\t\t" 1308 " -c for correctable error\n\t\t\t" 1309 "<id> = qdev device id\n\t\t\t" 1310 "<error_status> = error string or 32bit\n\t\t\t" 1311 "<tlb header> = 32bit x 4\n\t\t\t" 1312 "<tlb header prefix> = 32bit x 4", 1313 .cmd = hmp_pcie_aer_inject_error, 1314 }, 1315 1316STEXI 1317@item pcie_aer_inject_error 1318@findex pcie_aer_inject_error 1319Inject PCIe AER error 1320ETEXI 1321 1322 { 1323 .name = "netdev_add", 1324 .args_type = "netdev:O", 1325 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]", 1326 .help = "add host network device", 1327 .cmd = hmp_netdev_add, 1328 .command_completion = netdev_add_completion, 1329 }, 1330 1331STEXI 1332@item netdev_add 1333@findex netdev_add 1334Add host network device. 1335ETEXI 1336 1337 { 1338 .name = "netdev_del", 1339 .args_type = "id:s", 1340 .params = "id", 1341 .help = "remove host network device", 1342 .cmd = hmp_netdev_del, 1343 .command_completion = netdev_del_completion, 1344 }, 1345 1346STEXI 1347@item netdev_del 1348@findex netdev_del 1349Remove host network device. 1350ETEXI 1351 1352 { 1353 .name = "object_add", 1354 .args_type = "object:O", 1355 .params = "[qom-type=]type,id=str[,prop=value][,...]", 1356 .help = "create QOM object", 1357 .cmd = hmp_object_add, 1358 .command_completion = object_add_completion, 1359 }, 1360 1361STEXI 1362@item object_add 1363@findex object_add 1364Create QOM object. 1365ETEXI 1366 1367 { 1368 .name = "object_del", 1369 .args_type = "id:s", 1370 .params = "id", 1371 .help = "destroy QOM object", 1372 .cmd = hmp_object_del, 1373 .command_completion = object_del_completion, 1374 }, 1375 1376STEXI 1377@item object_del 1378@findex object_del 1379Destroy QOM object. 1380ETEXI 1381 1382#ifdef CONFIG_SLIRP 1383 { 1384 .name = "hostfwd_add", 1385 .args_type = "arg1:s,arg2:s?,arg3:s?", 1386 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport", 1387 .help = "redirect TCP or UDP connections from host to guest (requires -net user)", 1388 .cmd = hmp_hostfwd_add, 1389 }, 1390#endif 1391STEXI 1392@item hostfwd_add 1393@findex hostfwd_add 1394Redirect TCP or UDP connections from host to guest (requires -net user). 1395ETEXI 1396 1397#ifdef CONFIG_SLIRP 1398 { 1399 .name = "hostfwd_remove", 1400 .args_type = "arg1:s,arg2:s?,arg3:s?", 1401 .params = "[hub_id name]|[netdev_id] [tcp|udp]:[hostaddr]:hostport", 1402 .help = "remove host-to-guest TCP or UDP redirection", 1403 .cmd = hmp_hostfwd_remove, 1404 }, 1405 1406#endif 1407STEXI 1408@item hostfwd_remove 1409@findex hostfwd_remove 1410Remove host-to-guest TCP or UDP redirection. 1411ETEXI 1412 1413 { 1414 .name = "balloon", 1415 .args_type = "value:M", 1416 .params = "target", 1417 .help = "request VM to change its memory allocation (in MB)", 1418 .cmd = hmp_balloon, 1419 }, 1420 1421STEXI 1422@item balloon @var{value} 1423@findex balloon 1424Request VM to change its memory allocation to @var{value} (in MB). 1425ETEXI 1426 1427 { 1428 .name = "set_link", 1429 .args_type = "name:s,up:b", 1430 .params = "name on|off", 1431 .help = "change the link status of a network adapter", 1432 .cmd = hmp_set_link, 1433 .command_completion = set_link_completion, 1434 }, 1435 1436STEXI 1437@item set_link @var{name} [on|off] 1438@findex set_link 1439Switch link @var{name} on (i.e. up) or off (i.e. down). 1440ETEXI 1441 1442 { 1443 .name = "watchdog_action", 1444 .args_type = "action:s", 1445 .params = "[reset|shutdown|poweroff|pause|debug|none]", 1446 .help = "change watchdog action", 1447 .cmd = hmp_watchdog_action, 1448 .command_completion = watchdog_action_completion, 1449 }, 1450 1451STEXI 1452@item watchdog_action 1453@findex watchdog_action 1454Change watchdog action. 1455ETEXI 1456 1457 { 1458 .name = "acl_show", 1459 .args_type = "aclname:s", 1460 .params = "aclname", 1461 .help = "list rules in the access control list", 1462 .cmd = hmp_acl_show, 1463 }, 1464 1465STEXI 1466@item acl_show @var{aclname} 1467@findex acl_show 1468List all the matching rules in the access control list, and the default 1469policy. There are currently two named access control lists, 1470@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client 1471certificate distinguished name, and SASL username respectively. 1472ETEXI 1473 1474 { 1475 .name = "acl_policy", 1476 .args_type = "aclname:s,policy:s", 1477 .params = "aclname allow|deny", 1478 .help = "set default access control list policy", 1479 .cmd = hmp_acl_policy, 1480 }, 1481 1482STEXI 1483@item acl_policy @var{aclname} @code{allow|deny} 1484@findex acl_policy 1485Set the default access control list policy, used in the event that 1486none of the explicit rules match. The default policy at startup is 1487always @code{deny}. 1488ETEXI 1489 1490 { 1491 .name = "acl_add", 1492 .args_type = "aclname:s,match:s,policy:s,index:i?", 1493 .params = "aclname match allow|deny [index]", 1494 .help = "add a match rule to the access control list", 1495 .cmd = hmp_acl_add, 1496 }, 1497 1498STEXI 1499@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}] 1500@findex acl_add 1501Add a match rule to the access control list, allowing or denying access. 1502The match will normally be an exact username or x509 distinguished name, 1503but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to 1504allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will 1505normally be appended to the end of the ACL, but can be inserted 1506earlier in the list if the optional @var{index} parameter is supplied. 1507ETEXI 1508 1509 { 1510 .name = "acl_remove", 1511 .args_type = "aclname:s,match:s", 1512 .params = "aclname match", 1513 .help = "remove a match rule from the access control list", 1514 .cmd = hmp_acl_remove, 1515 }, 1516 1517STEXI 1518@item acl_remove @var{aclname} @var{match} 1519@findex acl_remove 1520Remove the specified match rule from the access control list. 1521ETEXI 1522 1523 { 1524 .name = "acl_reset", 1525 .args_type = "aclname:s", 1526 .params = "aclname", 1527 .help = "reset the access control list", 1528 .cmd = hmp_acl_reset, 1529 }, 1530 1531STEXI 1532@item acl_reset @var{aclname} 1533@findex acl_reset 1534Remove all matches from the access control list, and set the default 1535policy back to @code{deny}. 1536ETEXI 1537 1538 { 1539 .name = "nbd_server_start", 1540 .args_type = "all:-a,writable:-w,uri:s", 1541 .params = "nbd_server_start [-a] [-w] host:port", 1542 .help = "serve block devices on the given host and port", 1543 .cmd = hmp_nbd_server_start, 1544 }, 1545STEXI 1546@item nbd_server_start @var{host}:@var{port} 1547@findex nbd_server_start 1548Start an NBD server on the given host and/or port. If the @option{-a} 1549option is included, all of the virtual machine's block devices that 1550have an inserted media on them are automatically exported; in this case, 1551the @option{-w} option makes the devices writable too. 1552ETEXI 1553 1554 { 1555 .name = "nbd_server_add", 1556 .args_type = "writable:-w,device:B,name:s?", 1557 .params = "nbd_server_add [-w] device [name]", 1558 .help = "export a block device via NBD", 1559 .cmd = hmp_nbd_server_add, 1560 }, 1561STEXI 1562@item nbd_server_add @var{device} [ @var{name} ] 1563@findex nbd_server_add 1564Export a block device through QEMU's NBD server, which must be started 1565beforehand with @command{nbd_server_start}. The @option{-w} option makes the 1566exported device writable too. The export name is controlled by @var{name}, 1567defaulting to @var{device}. 1568ETEXI 1569 1570 { 1571 .name = "nbd_server_remove", 1572 .args_type = "force:-f,name:s", 1573 .params = "nbd_server_remove [-f] name", 1574 .help = "remove an export previously exposed via NBD", 1575 .cmd = hmp_nbd_server_remove, 1576 }, 1577STEXI 1578@item nbd_server_remove [-f] @var{name} 1579@findex nbd_server_remove 1580Stop exporting a block device through QEMU's NBD server, which was 1581previously started with @command{nbd_server_add}. The @option{-f} 1582option forces the server to drop the export immediately even if 1583clients are connected; otherwise the command fails unless there are no 1584clients. 1585ETEXI 1586 1587 { 1588 .name = "nbd_server_stop", 1589 .args_type = "", 1590 .params = "nbd_server_stop", 1591 .help = "stop serving block devices using the NBD protocol", 1592 .cmd = hmp_nbd_server_stop, 1593 }, 1594STEXI 1595@item nbd_server_stop 1596@findex nbd_server_stop 1597Stop the QEMU embedded NBD server. 1598ETEXI 1599 1600 1601#if defined(TARGET_I386) 1602 1603 { 1604 .name = "mce", 1605 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l", 1606 .params = "[-b] cpu bank status mcgstatus addr misc", 1607 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]", 1608 .cmd = hmp_mce, 1609 }, 1610 1611#endif 1612STEXI 1613@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc} 1614@findex mce (x86) 1615Inject an MCE on the given CPU (x86 only). 1616ETEXI 1617 1618 { 1619 .name = "getfd", 1620 .args_type = "fdname:s", 1621 .params = "getfd name", 1622 .help = "receive a file descriptor via SCM rights and assign it a name", 1623 .cmd = hmp_getfd, 1624 }, 1625 1626STEXI 1627@item getfd @var{fdname} 1628@findex getfd 1629If a file descriptor is passed alongside this command using the SCM_RIGHTS 1630mechanism on unix sockets, it is stored using the name @var{fdname} for 1631later use by other monitor commands. 1632ETEXI 1633 1634 { 1635 .name = "closefd", 1636 .args_type = "fdname:s", 1637 .params = "closefd name", 1638 .help = "close a file descriptor previously passed via SCM rights", 1639 .cmd = hmp_closefd, 1640 }, 1641 1642STEXI 1643@item closefd @var{fdname} 1644@findex closefd 1645Close the file descriptor previously assigned to @var{fdname} using the 1646@code{getfd} command. This is only needed if the file descriptor was never 1647used by another monitor command. 1648ETEXI 1649 1650 { 1651 .name = "block_passwd", 1652 .args_type = "device:B,password:s", 1653 .params = "block_passwd device password", 1654 .help = "set the password of encrypted block devices", 1655 .cmd = hmp_block_passwd, 1656 }, 1657 1658STEXI 1659@item block_passwd @var{device} @var{password} 1660@findex block_passwd 1661Set the encrypted device @var{device} password to @var{password} 1662 1663This command is now obsolete and will always return an error since 2.10 1664ETEXI 1665 1666 { 1667 .name = "block_set_io_throttle", 1668 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l", 1669 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr", 1670 .help = "change I/O throttle limits for a block drive", 1671 .cmd = hmp_block_set_io_throttle, 1672 }, 1673 1674STEXI 1675@item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr} 1676@findex block_set_io_throttle 1677Change 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}. 1678@var{device} can be a block device name, a qdev ID or a QOM path. 1679ETEXI 1680 1681 { 1682 .name = "set_password", 1683 .args_type = "protocol:s,password:s,connected:s?", 1684 .params = "protocol password action-if-connected", 1685 .help = "set spice/vnc password", 1686 .cmd = hmp_set_password, 1687 }, 1688 1689STEXI 1690@item set_password [ vnc | spice ] password [ action-if-connected ] 1691@findex set_password 1692Change spice/vnc password. Use zero to make the password stay valid 1693forever. @var{action-if-connected} specifies what should happen in 1694case a connection is established: @var{fail} makes the password change 1695fail. @var{disconnect} changes the password and disconnects the 1696client. @var{keep} changes the password and keeps the connection up. 1697@var{keep} is the default. 1698ETEXI 1699 1700 { 1701 .name = "expire_password", 1702 .args_type = "protocol:s,time:s", 1703 .params = "protocol time", 1704 .help = "set spice/vnc password expire-time", 1705 .cmd = hmp_expire_password, 1706 }, 1707 1708STEXI 1709@item expire_password [ vnc | spice ] expire-time 1710@findex expire_password 1711Specify when a password for spice/vnc becomes 1712invalid. @var{expire-time} accepts: 1713 1714@table @var 1715@item now 1716Invalidate password instantly. 1717 1718@item never 1719Password stays valid forever. 1720 1721@item +nsec 1722Password stays valid for @var{nsec} seconds starting now. 1723 1724@item nsec 1725Password is invalidated at the given time. @var{nsec} are the seconds 1726passed since 1970, i.e. unix epoch. 1727 1728@end table 1729ETEXI 1730 1731 { 1732 .name = "chardev-add", 1733 .args_type = "args:s", 1734 .params = "args", 1735 .help = "add chardev", 1736 .cmd = hmp_chardev_add, 1737 .command_completion = chardev_add_completion, 1738 }, 1739 1740STEXI 1741@item chardev-add args 1742@findex chardev-add 1743chardev-add accepts the same parameters as the -chardev command line switch. 1744 1745ETEXI 1746 1747 { 1748 .name = "chardev-change", 1749 .args_type = "id:s,args:s", 1750 .params = "id args", 1751 .help = "change chardev", 1752 .cmd = hmp_chardev_change, 1753 }, 1754 1755STEXI 1756@item chardev-change args 1757@findex chardev-change 1758chardev-change accepts existing chardev @var{id} and then the same arguments 1759as the -chardev command line switch (except for "id"). 1760 1761ETEXI 1762 1763 { 1764 .name = "chardev-remove", 1765 .args_type = "id:s", 1766 .params = "id", 1767 .help = "remove chardev", 1768 .cmd = hmp_chardev_remove, 1769 .command_completion = chardev_remove_completion, 1770 }, 1771 1772STEXI 1773@item chardev-remove id 1774@findex chardev-remove 1775Removes the chardev @var{id}. 1776 1777ETEXI 1778 1779 { 1780 .name = "chardev-send-break", 1781 .args_type = "id:s", 1782 .params = "id", 1783 .help = "send a break on chardev", 1784 .cmd = hmp_chardev_send_break, 1785 .command_completion = chardev_remove_completion, 1786 }, 1787 1788STEXI 1789@item chardev-send-break id 1790@findex chardev-send-break 1791Send a break on the chardev @var{id}. 1792 1793ETEXI 1794 1795 { 1796 .name = "qemu-io", 1797 .args_type = "device:B,command:s", 1798 .params = "[device] \"[command]\"", 1799 .help = "run a qemu-io command on a block device", 1800 .cmd = hmp_qemu_io, 1801 }, 1802 1803STEXI 1804@item qemu-io @var{device} @var{command} 1805@findex qemu-io 1806Executes a qemu-io command on the given block device. 1807 1808ETEXI 1809 1810 { 1811 .name = "cpu-add", 1812 .args_type = "id:i", 1813 .params = "id", 1814 .help = "add cpu", 1815 .cmd = hmp_cpu_add, 1816 }, 1817 1818STEXI 1819@item cpu-add @var{id} 1820@findex cpu-add 1821Add CPU with id @var{id} 1822ETEXI 1823 1824 { 1825 .name = "qom-list", 1826 .args_type = "path:s?", 1827 .params = "path", 1828 .help = "list QOM properties", 1829 .cmd = hmp_qom_list, 1830 }, 1831 1832STEXI 1833@item qom-list [@var{path}] 1834Print QOM properties of object at location @var{path} 1835ETEXI 1836 1837 { 1838 .name = "qom-set", 1839 .args_type = "path:s,property:s,value:s", 1840 .params = "path property value", 1841 .help = "set QOM property", 1842 .cmd = hmp_qom_set, 1843 }, 1844 1845STEXI 1846@item qom-set @var{path} @var{property} @var{value} 1847Set QOM property @var{property} of object at location @var{path} to value @var{value} 1848ETEXI 1849 1850 { 1851 .name = "info", 1852 .args_type = "item:s?", 1853 .params = "[subcommand]", 1854 .help = "show various information about the system state", 1855 .cmd = hmp_info_help, 1856 .sub_table = info_cmds, 1857 }, 1858 1859STEXI 1860@end table 1861ETEXI 1862