failover: g_strcmp0() knows how to handle NULL
[qemu/ar7.git] / hmp-commands.hx
blobff2d7aa8f3e39a179ee2b340ac01ec30af3a3b91
1 HXCOMM Use DEFHEADING() to define headings in both help text and rST.
2 HXCOMM Text between SRST and ERST is copied to the rST version and
3 HXCOMM discarded from C version.
4 HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
5 HXCOMM monitor commands
6 HXCOMM HXCOMM can be used for comments, discarded from both rST and C.
10 .name = "help|?",
11 .args_type = "name:S?",
12 .params = "[cmd]",
13 .help = "show the help",
14 .cmd = do_help_cmd,
15 .flags = "p",
18 SRST
19 ``help`` or ``?`` [*cmd*]
20 Show the help for all commands or just for command *cmd*.
21 ERST
24 .name = "commit",
25 .args_type = "device:B",
26 .params = "device|all",
27 .help = "commit changes to the disk images (if -snapshot is used) or backing files",
28 .cmd = hmp_commit,
31 SRST
32 ``commit``
33 Commit changes to the disk images (if -snapshot is used) or backing files.
34 If the backing file is smaller than the snapshot, then the backing file
35 will be resized to be the same size as the snapshot. If the snapshot is
36 smaller than the backing file, the backing file will not be truncated.
37 If you want the backing file to match the size of the smaller snapshot,
38 you can safely truncate it yourself once the commit operation successfully
39 completes.
40 ERST
43 .name = "q|quit",
44 .args_type = "",
45 .params = "",
46 .help = "quit the emulator",
47 .cmd = hmp_quit,
50 SRST
51 ``q`` or ``quit``
52 Quit the emulator.
53 ERST
56 .name = "exit_preconfig",
57 .args_type = "",
58 .params = "",
59 .help = "exit the preconfig state",
60 .cmd = hmp_exit_preconfig,
61 .flags = "p",
64 SRST
65 ``exit_preconfig``
66 This command makes QEMU exit the preconfig state and proceed with
67 VM initialization using configuration data provided on the command line
68 and via the QMP monitor during the preconfig state. The command is only
69 available during the preconfig state (i.e. when the --preconfig command
70 line option was in use).
71 ERST
74 .name = "block_resize",
75 .args_type = "device:B,size:o",
76 .params = "device size",
77 .help = "resize a block image",
78 .cmd = hmp_block_resize,
79 .coroutine = true,
82 SRST
83 ``block_resize``
84 Resize a block image while a guest is running. Usually requires guest
85 action to see the updated size. Resize to a lower size is supported,
86 but should be used with extreme caution. Note that this command only
87 resizes image files, it can not resize block devices like LVM volumes.
88 ERST
91 .name = "block_stream",
92 .args_type = "device:B,speed:o?,base:s?",
93 .params = "device [speed [base]]",
94 .help = "copy data from a backing file into a block device",
95 .cmd = hmp_block_stream,
98 SRST
99 ``block_stream``
100 Copy data from a backing file into a block device.
101 ERST
104 .name = "block_job_set_speed",
105 .args_type = "device:B,speed:o",
106 .params = "device speed",
107 .help = "set maximum speed for a background block operation",
108 .cmd = hmp_block_job_set_speed,
111 SRST
112 ``block_job_set_speed``
113 Set maximum speed for a background block operation.
114 ERST
117 .name = "block_job_cancel",
118 .args_type = "force:-f,device:B",
119 .params = "[-f] device",
120 .help = "stop an active background block operation (use -f"
121 "\n\t\t\t if you want to abort the operation immediately"
122 "\n\t\t\t instead of keep running until data is in sync)",
123 .cmd = hmp_block_job_cancel,
126 SRST
127 ``block_job_cancel``
128 Stop an active background block operation (streaming, mirroring).
129 ERST
132 .name = "block_job_complete",
133 .args_type = "device:B",
134 .params = "device",
135 .help = "stop an active background block operation",
136 .cmd = hmp_block_job_complete,
139 SRST
140 ``block_job_complete``
141 Manually trigger completion of an active background block operation.
142 For mirroring, this will switch the device to the destination path.
143 ERST
146 .name = "block_job_pause",
147 .args_type = "device:B",
148 .params = "device",
149 .help = "pause an active background block operation",
150 .cmd = hmp_block_job_pause,
153 SRST
154 ``block_job_pause``
155 Pause an active block streaming operation.
156 ERST
159 .name = "block_job_resume",
160 .args_type = "device:B",
161 .params = "device",
162 .help = "resume a paused background block operation",
163 .cmd = hmp_block_job_resume,
166 SRST
167 ``block_job_resume``
168 Resume a paused block streaming operation.
169 ERST
172 .name = "eject",
173 .args_type = "force:-f,device:B",
174 .params = "[-f] device",
175 .help = "eject a removable medium (use -f to force it)",
176 .cmd = hmp_eject,
179 SRST
180 ``eject [-f]`` *device*
181 Eject a removable medium (use -f to force it).
182 ERST
185 .name = "drive_del",
186 .args_type = "id:B",
187 .params = "device",
188 .help = "remove host block device",
189 .cmd = hmp_drive_del,
192 SRST
193 ``drive_del`` *device*
194 Remove host block device. The result is that guest generated IO is no longer
195 submitted against the host device underlying the disk. Once a drive has
196 been deleted, the QEMU Block layer returns -EIO which results in IO
197 errors in the guest for applications that are reading/writing to the device.
198 These errors are always reported to the guest, regardless of the drive's error
199 actions (drive options rerror, werror).
200 ERST
203 .name = "change",
204 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?",
205 .params = "device filename [format [read-only-mode]]",
206 .help = "change a removable medium, optional format",
207 .cmd = hmp_change,
210 SRST
211 ``change`` *device* *setting*
212 Change the configuration of a device.
214 ``change`` *diskdevice* *filename* [*format* [*read-only-mode*]]
215 Change the medium for a removable disk device to point to *filename*. eg::
217 (qemu) change ide1-cd0 /path/to/some.iso
219 *format* is optional.
221 *read-only-mode* may be used to change the read-only status of the device.
222 It accepts the following values:
224 retain
225 Retains the current status; this is the default.
227 read-only
228 Makes the device read-only.
230 read-write
231 Makes the device writable.
233 ``change vnc`` *display*,\ *options*
234 Change the configuration of the VNC server. The valid syntax for *display*
235 and *options* are described at :ref:`sec_005finvocation`. eg::
237 (qemu) change vnc localhost:1
239 ``change vnc password`` [*password*]
241 Change the password associated with the VNC server. If the new password
242 is not supplied, the monitor will prompt for it to be entered. VNC
243 passwords are only significant up to 8 letters. eg::
245 (qemu) change vnc password
246 Password: ********
248 ERST
251 .name = "screendump",
252 .args_type = "filename:F,device:s?,head:i?",
253 .params = "filename [device [head]]",
254 .help = "save screen from head 'head' of display device 'device' "
255 "into PPM image 'filename'",
256 .cmd = hmp_screendump,
257 .coroutine = true,
260 SRST
261 ``screendump`` *filename*
262 Save screen into PPM image *filename*.
263 ERST
266 .name = "logfile",
267 .args_type = "filename:F",
268 .params = "filename",
269 .help = "output logs to 'filename'",
270 .cmd = hmp_logfile,
273 SRST
274 ``logfile`` *filename*
275 Output logs to *filename*.
276 ERST
279 .name = "trace-event",
280 .args_type = "name:s,option:b,vcpu:i?",
281 .params = "name on|off [vcpu]",
282 .help = "changes status of a specific trace event "
283 "(vcpu: vCPU to set, default is all)",
284 .cmd = hmp_trace_event,
285 .command_completion = trace_event_completion,
288 SRST
289 ``trace-event``
290 changes status of a trace event
291 ERST
293 #if defined(CONFIG_TRACE_SIMPLE)
295 .name = "trace-file",
296 .args_type = "op:s?,arg:F?",
297 .params = "on|off|flush|set [arg]",
298 .help = "open, close, or flush trace file, or set a new file name",
299 .cmd = hmp_trace_file,
302 SRST
303 ``trace-file on|off|flush``
304 Open, close, or flush the trace file. If no argument is given, the
305 status of the trace file is displayed.
306 ERST
307 #endif
310 .name = "log",
311 .args_type = "items:s",
312 .params = "item1[,...]",
313 .help = "activate logging of the specified items",
314 .cmd = hmp_log,
317 SRST
318 ``log`` *item1*\ [,...]
319 Activate logging of the specified items.
320 ERST
323 .name = "savevm",
324 .args_type = "name:s?",
325 .params = "tag",
326 .help = "save a VM snapshot. If no tag is provided, a new snapshot is created",
327 .cmd = hmp_savevm,
330 SRST
331 ``savevm`` *tag*
332 Create a snapshot of the whole virtual machine. If *tag* is
333 provided, it is used as human readable identifier. If there is already
334 a snapshot with the same tag, it is replaced. More info at
335 :ref:`vm_005fsnapshots`.
337 Since 4.0, savevm stopped allowing the snapshot id to be set, accepting
338 only *tag* as parameter.
339 ERST
342 .name = "loadvm",
343 .args_type = "name:s",
344 .params = "tag",
345 .help = "restore a VM snapshot from its tag",
346 .cmd = hmp_loadvm,
347 .command_completion = loadvm_completion,
350 SRST
351 ``loadvm`` *tag*
352 Set the whole virtual machine to the snapshot identified by the tag
353 *tag*.
355 Since 4.0, loadvm stopped accepting snapshot id as parameter.
356 ERST
359 .name = "delvm",
360 .args_type = "name:s",
361 .params = "tag",
362 .help = "delete a VM snapshot from its tag",
363 .cmd = hmp_delvm,
364 .command_completion = delvm_completion,
367 SRST
368 ``delvm`` *tag*
369 Delete the snapshot identified by *tag*.
371 Since 4.0, delvm stopped deleting snapshots by snapshot id, accepting
372 only *tag* as parameter.
373 ERST
376 .name = "singlestep",
377 .args_type = "option:s?",
378 .params = "[on|off]",
379 .help = "run emulation in singlestep mode or switch to normal mode",
380 .cmd = hmp_singlestep,
383 SRST
384 ``singlestep [off]``
385 Run the emulation in single step mode.
386 If called with option off, the emulation returns to normal mode.
387 ERST
390 .name = "stop",
391 .args_type = "",
392 .params = "",
393 .help = "stop emulation",
394 .cmd = hmp_stop,
397 SRST
398 ``stop``
399 Stop emulation.
400 ERST
403 .name = "c|cont",
404 .args_type = "",
405 .params = "",
406 .help = "resume emulation",
407 .cmd = hmp_cont,
410 SRST
411 ``c`` or ``cont``
412 Resume emulation.
413 ERST
416 .name = "system_wakeup",
417 .args_type = "",
418 .params = "",
419 .help = "wakeup guest from suspend",
420 .cmd = hmp_system_wakeup,
423 SRST
424 ``system_wakeup``
425 Wakeup guest from suspend.
426 ERST
429 .name = "gdbserver",
430 .args_type = "device:s?",
431 .params = "[device]",
432 .help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
433 .cmd = hmp_gdbserver,
436 SRST
437 ``gdbserver`` [*port*]
438 Start gdbserver session (default *port*\=1234)
439 ERST
442 .name = "x",
443 .args_type = "fmt:/,addr:l",
444 .params = "/fmt addr",
445 .help = "virtual memory dump starting at 'addr'",
446 .cmd = hmp_memory_dump,
449 SRST
450 ``x/``\ *fmt* *addr*
451 Virtual memory dump starting at *addr*.
452 ERST
455 .name = "xp",
456 .args_type = "fmt:/,addr:l",
457 .params = "/fmt addr",
458 .help = "physical memory dump starting at 'addr'",
459 .cmd = hmp_physical_memory_dump,
462 SRST
463 ``xp /``\ *fmt* *addr*
464 Physical memory dump starting at *addr*.
466 *fmt* is a format which tells the command how to format the
467 data. Its syntax is: ``/{count}{format}{size}``
469 *count*
470 is the number of items to be dumped.
471 *format*
472 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
473 c (char) or i (asm instruction).
474 *size*
475 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
476 ``h`` or ``w`` can be specified with the ``i`` format to
477 respectively select 16 or 32 bit code instruction size.
479 Examples:
481 Dump 10 instructions at the current instruction pointer::
483 (qemu) x/10i $eip
484 0x90107063: ret
485 0x90107064: sti
486 0x90107065: lea 0x0(%esi,1),%esi
487 0x90107069: lea 0x0(%edi,1),%edi
488 0x90107070: ret
489 0x90107071: jmp 0x90107080
490 0x90107073: nop
491 0x90107074: nop
492 0x90107075: nop
493 0x90107076: nop
495 Dump 80 16 bit values at the start of the video memory::
497 (qemu) xp/80hx 0xb8000
498 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
499 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
500 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
501 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
502 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
503 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
504 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
505 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
506 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
507 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
509 ERST
512 .name = "gpa2hva",
513 .args_type = "addr:l",
514 .params = "addr",
515 .help = "print the host virtual address corresponding to a guest physical address",
516 .cmd = hmp_gpa2hva,
519 SRST
520 ``gpa2hva`` *addr*
521 Print the host virtual address at which the guest's physical address *addr*
522 is mapped.
523 ERST
525 #ifdef CONFIG_LINUX
527 .name = "gpa2hpa",
528 .args_type = "addr:l",
529 .params = "addr",
530 .help = "print the host physical address corresponding to a guest physical address",
531 .cmd = hmp_gpa2hpa,
533 #endif
535 SRST
536 ``gpa2hpa`` *addr*
537 Print the host physical address at which the guest's physical address *addr*
538 is mapped.
539 ERST
542 .name = "gva2gpa",
543 .args_type = "addr:l",
544 .params = "addr",
545 .help = "print the guest physical address corresponding to a guest virtual address",
546 .cmd = hmp_gva2gpa,
549 SRST
550 ``gva2gpa`` *addr*
551 Print the guest physical address at which the guest's virtual address *addr*
552 is mapped based on the mapping for the current CPU.
553 ERST
556 .name = "p|print",
557 .args_type = "fmt:/,val:l",
558 .params = "/fmt expr",
559 .help = "print expression value (use $reg for CPU register access)",
560 .cmd = do_print,
563 SRST
564 ``p`` or ``print/``\ *fmt* *expr*
565 Print expression value. Only the *format* part of *fmt* is
566 used.
567 ERST
570 .name = "i",
571 .args_type = "fmt:/,addr:i,index:i.",
572 .params = "/fmt addr",
573 .help = "I/O port read",
574 .cmd = hmp_ioport_read,
577 SRST
578 ``i/``\ *fmt* *addr* [.\ *index*\ ]
579 Read I/O port.
580 ERST
583 .name = "o",
584 .args_type = "fmt:/,addr:i,val:i",
585 .params = "/fmt addr value",
586 .help = "I/O port write",
587 .cmd = hmp_ioport_write,
590 SRST
591 ``o/``\ *fmt* *addr* *val*
592 Write to I/O port.
593 ERST
596 .name = "sendkey",
597 .args_type = "keys:s,hold-time:i?",
598 .params = "keys [hold_ms]",
599 .help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
600 .cmd = hmp_sendkey,
601 .command_completion = sendkey_completion,
604 SRST
605 ``sendkey`` *keys*
606 Send *keys* to the guest. *keys* could be the name of the
607 key or the raw value in hexadecimal format. Use ``-`` to press
608 several keys simultaneously. Example::
610 sendkey ctrl-alt-f1
612 This command is useful to send keys that your graphical user interface
613 intercepts at low level, such as ``ctrl-alt-f1`` in X Window.
614 ERST
616 .name = "sync-profile",
617 .args_type = "op:s?",
618 .params = "[on|off|reset]",
619 .help = "enable, disable or reset synchronization profiling. "
620 "With no arguments, prints whether profiling is on or off.",
621 .cmd = hmp_sync_profile,
624 SRST
625 ``sync-profile [on|off|reset]``
626 Enable, disable or reset synchronization profiling. With no arguments, prints
627 whether profiling is on or off.
628 ERST
631 .name = "system_reset",
632 .args_type = "",
633 .params = "",
634 .help = "reset the system",
635 .cmd = hmp_system_reset,
638 SRST
639 ``system_reset``
640 Reset the system.
641 ERST
644 .name = "system_powerdown",
645 .args_type = "",
646 .params = "",
647 .help = "send system power down event",
648 .cmd = hmp_system_powerdown,
651 SRST
652 ``system_powerdown``
653 Power down the system (if supported).
654 ERST
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,
664 SRST
665 ``sum`` *addr* *size*
666 Compute the checksum of a memory region.
667 ERST
670 .name = "device_add",
671 .args_type = "device:O",
672 .params = "driver[,prop=value][,...]",
673 .help = "add device, like -device on the command line",
674 .cmd = hmp_device_add,
675 .command_completion = device_add_completion,
678 SRST
679 ``device_add`` *config*
680 Add device.
681 ERST
684 .name = "device_del",
685 .args_type = "id:s",
686 .params = "device",
687 .help = "remove device",
688 .cmd = hmp_device_del,
689 .command_completion = device_del_completion,
692 SRST
693 ``device_del`` *id*
694 Remove device *id*. *id* may be a short ID
695 or a QOM object path.
696 ERST
699 .name = "cpu",
700 .args_type = "index:i",
701 .params = "index",
702 .help = "set the default CPU",
703 .cmd = hmp_cpu,
706 SRST
707 ``cpu`` *index*
708 Set the default CPU.
709 ERST
712 .name = "mouse_move",
713 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
714 .params = "dx dy [dz]",
715 .help = "send mouse move events",
716 .cmd = hmp_mouse_move,
719 SRST
720 ``mouse_move`` *dx* *dy* [*dz*]
721 Move the active mouse to the specified coordinates *dx* *dy*
722 with optional scroll axis *dz*.
723 ERST
726 .name = "mouse_button",
727 .args_type = "button_state:i",
728 .params = "state",
729 .help = "change mouse button state (1=L, 2=M, 4=R)",
730 .cmd = hmp_mouse_button,
733 SRST
734 ``mouse_button`` *val*
735 Change the active mouse button state *val* (1=L, 2=M, 4=R).
736 ERST
739 .name = "mouse_set",
740 .args_type = "index:i",
741 .params = "index",
742 .help = "set which mouse device receives events",
743 .cmd = hmp_mouse_set,
746 SRST
747 ``mouse_set`` *index*
748 Set which mouse device receives events at given *index*, index
749 can be obtained with::
751 info mice
753 ERST
756 .name = "wavcapture",
757 .args_type = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
758 .params = "path audiodev [frequency [bits [channels]]]",
759 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
760 .cmd = hmp_wavcapture,
762 SRST
763 ``wavcapture`` *filename* *audiodev* [*frequency* [*bits* [*channels*]]]
764 Capture audio into *filename* from *audiodev*, using sample rate
765 *frequency* bits per sample *bits* and number of channels
766 *channels*.
768 Defaults:
770 - Sample rate = 44100 Hz - CD quality
771 - Bits = 16
772 - Number of channels = 2 - Stereo
773 ERST
776 .name = "stopcapture",
777 .args_type = "n:i",
778 .params = "capture index",
779 .help = "stop capture",
780 .cmd = hmp_stopcapture,
782 SRST
783 ``stopcapture`` *index*
784 Stop capture with a given *index*, index can be obtained with::
786 info capture
788 ERST
791 .name = "memsave",
792 .args_type = "val:l,size:i,filename:s",
793 .params = "addr size file",
794 .help = "save to disk virtual memory dump starting at 'addr' of size 'size'",
795 .cmd = hmp_memsave,
798 SRST
799 ``memsave`` *addr* *size* *file*
800 save to disk virtual memory dump starting at *addr* of size *size*.
801 ERST
804 .name = "pmemsave",
805 .args_type = "val:l,size:i,filename:s",
806 .params = "addr size file",
807 .help = "save to disk physical memory dump starting at 'addr' of size 'size'",
808 .cmd = hmp_pmemsave,
811 SRST
812 ``pmemsave`` *addr* *size* *file*
813 save to disk physical memory dump starting at *addr* of size *size*.
814 ERST
817 .name = "boot_set",
818 .args_type = "bootdevice:s",
819 .params = "bootdevice",
820 .help = "define new values for the boot device list",
821 .cmd = hmp_boot_set,
824 SRST
825 ``boot_set`` *bootdevicelist*
826 Define new values for the boot device list. Those values will override
827 the values specified on the command line through the ``-boot`` option.
829 The values that can be specified here depend on the machine type, but are
830 the same that can be specified in the ``-boot`` command line option.
831 ERST
834 .name = "nmi",
835 .args_type = "",
836 .params = "",
837 .help = "inject an NMI",
838 .cmd = hmp_nmi,
840 SRST
841 ``nmi`` *cpu*
842 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
843 ERST
846 .name = "ringbuf_write",
847 .args_type = "device:s,data:s",
848 .params = "device data",
849 .help = "Write to a ring buffer character device",
850 .cmd = hmp_ringbuf_write,
851 .command_completion = ringbuf_write_completion,
854 SRST
855 ``ringbuf_write`` *device* *data*
856 Write *data* to ring buffer character device *device*.
857 *data* must be a UTF-8 string.
858 ERST
861 .name = "ringbuf_read",
862 .args_type = "device:s,size:i",
863 .params = "device size",
864 .help = "Read from a ring buffer character device",
865 .cmd = hmp_ringbuf_read,
866 .command_completion = ringbuf_write_completion,
869 SRST
870 ``ringbuf_read`` *device*
871 Read and print up to *size* bytes from ring buffer character
872 device *device*.
873 Certain non-printable characters are printed ``\uXXXX``, where ``XXXX`` is the
874 character code in hexadecimal. Character ``\`` is printed ``\\``.
875 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
876 NUL characters, after the ring buffer lost data, and when reading
877 stops because the size limit is reached.
878 ERST
881 .name = "announce_self",
882 .args_type = "interfaces:s?,id:s?",
883 .params = "[interfaces] [id]",
884 .help = "Trigger GARP/RARP announcements",
885 .cmd = hmp_announce_self,
888 SRST
889 ``announce_self``
890 Trigger a round of GARP/RARP broadcasts; this is useful for explicitly
891 updating the network infrastructure after a reconfiguration or some forms
892 of migration. The timings of the round are set by the migration announce
893 parameters. An optional comma separated *interfaces* list restricts the
894 announce to the named set of interfaces. An optional *id* can be used to
895 start a separate announce timer and to change the parameters of it later.
896 ERST
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,
912 SRST
913 ``migrate [-d] [-b] [-i]`` *uri*
914 Migrate to *uri* (using -d to not wait for completion).
916 ``-b``
917 for migration with full copy of disk
918 ``-i``
919 for migration with incremental copy of disk (base image is shared)
920 ERST
923 .name = "migrate_cancel",
924 .args_type = "",
925 .params = "",
926 .help = "cancel the current VM migration",
927 .cmd = hmp_migrate_cancel,
930 SRST
931 ``migrate_cancel``
932 Cancel the current VM migration.
933 ERST
936 .name = "migrate_continue",
937 .args_type = "state:s",
938 .params = "state",
939 .help = "Continue migration from the given paused state",
940 .cmd = hmp_migrate_continue,
942 SRST
943 ``migrate_continue`` *state*
944 Continue migration from the paused state *state*
945 ERST
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,
955 SRST
956 ``migrate_incoming`` *uri*
957 Continue an incoming migration using the *uri* (that has the same syntax
958 as the ``-incoming`` option).
959 ERST
962 .name = "migrate_recover",
963 .args_type = "uri:s",
964 .params = "uri",
965 .help = "Continue a paused incoming postcopy migration",
966 .cmd = hmp_migrate_recover,
969 SRST
970 ``migrate_recover`` *uri*
971 Continue a paused incoming postcopy migration using the *uri*.
972 ERST
975 .name = "migrate_pause",
976 .args_type = "",
977 .params = "",
978 .help = "Pause an ongoing migration (postcopy-only)",
979 .cmd = hmp_migrate_pause,
982 SRST
983 ``migrate_pause``
984 Pause an ongoing migration. Currently it only supports postcopy.
985 ERST
988 .name = "migrate_set_cache_size",
989 .args_type = "value:o",
990 .params = "value",
991 .help = "set cache size (in bytes) for XBZRLE migrations,"
992 "the cache size will be rounded down to the nearest "
993 "power of 2.\n"
994 "The cache size affects the number of cache misses."
995 "In case of a high cache miss ratio you need to increase"
996 " the cache size",
997 .cmd = hmp_migrate_set_cache_size,
1000 SRST
1001 ``migrate_set_cache_size`` *value*
1002 Set cache size to *value* (in bytes) for xbzrle migrations.
1003 ERST
1006 .name = "migrate_set_speed",
1007 .args_type = "value:o",
1008 .params = "value",
1009 .help = "set maximum speed (in bytes) for migrations. "
1010 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1011 .cmd = hmp_migrate_set_speed,
1014 SRST
1015 ``migrate_set_speed`` *value*
1016 Set maximum speed to *value* (in bytes) for migrations.
1017 ERST
1020 .name = "migrate_set_downtime",
1021 .args_type = "value:T",
1022 .params = "value",
1023 .help = "set maximum tolerated downtime (in seconds) for migrations",
1024 .cmd = hmp_migrate_set_downtime,
1027 SRST
1028 ``migrate_set_downtime`` *second*
1029 Set maximum tolerated downtime (in seconds) for migration.
1030 ERST
1033 .name = "migrate_set_capability",
1034 .args_type = "capability:s,state:b",
1035 .params = "capability state",
1036 .help = "Enable/Disable the usage of a capability for migration",
1037 .cmd = hmp_migrate_set_capability,
1038 .command_completion = migrate_set_capability_completion,
1041 SRST
1042 ``migrate_set_capability`` *capability* *state*
1043 Enable/Disable the usage of a capability *capability* for migration.
1044 ERST
1047 .name = "migrate_set_parameter",
1048 .args_type = "parameter:s,value:s",
1049 .params = "parameter value",
1050 .help = "Set the parameter for migration",
1051 .cmd = hmp_migrate_set_parameter,
1052 .command_completion = migrate_set_parameter_completion,
1055 SRST
1056 ``migrate_set_parameter`` *parameter* *value*
1057 Set the parameter *parameter* for migration.
1058 ERST
1061 .name = "migrate_start_postcopy",
1062 .args_type = "",
1063 .params = "",
1064 .help = "Followup to a migration command to switch the migration"
1065 " to postcopy mode. The postcopy-ram capability must "
1066 "be set on both source and destination before the "
1067 "original migration command .",
1068 .cmd = hmp_migrate_start_postcopy,
1071 SRST
1072 ``migrate_start_postcopy``
1073 Switch in-progress migration to postcopy mode. Ignored after the end of
1074 migration (or once already in postcopy).
1075 ERST
1078 .name = "x_colo_lost_heartbeat",
1079 .args_type = "",
1080 .params = "",
1081 .help = "Tell COLO that heartbeat is lost,\n\t\t\t"
1082 "a failover or takeover is needed.",
1083 .cmd = hmp_x_colo_lost_heartbeat,
1086 SRST
1087 ``x_colo_lost_heartbeat``
1088 Tell COLO that heartbeat is lost, a failover or takeover is needed.
1089 ERST
1092 .name = "client_migrate_info",
1093 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1094 .params = "protocol hostname port tls-port cert-subject",
1095 .help = "set migration information for remote display",
1096 .cmd = hmp_client_migrate_info,
1099 SRST
1100 ``client_migrate_info`` *protocol* *hostname* *port* *tls-port* *cert-subject*
1101 Set migration information for remote display. This makes the server
1102 ask the client to automatically reconnect using the new parameters
1103 once migration finished successfully. Only implemented for SPICE.
1104 ERST
1107 .name = "dump-guest-memory",
1108 .args_type = "paging:-p,detach:-d,windmp:-w,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:l?,length:l?",
1109 .params = "[-p] [-d] [-z|-l|-s|-w] filename [begin length]",
1110 .help = "dump guest memory into file 'filename'.\n\t\t\t"
1111 "-p: do paging to get guest's memory mapping.\n\t\t\t"
1112 "-d: return immediately (do not wait for completion).\n\t\t\t"
1113 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1114 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1115 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1116 "-w: dump in Windows crashdump format (can be used instead of ELF-dump converting),\n\t\t\t"
1117 " for Windows x64 guests with vmcoreinfo driver only.\n\t\t\t"
1118 "begin: the starting physical address.\n\t\t\t"
1119 "length: the memory size, in bytes.",
1120 .cmd = hmp_dump_guest_memory,
1123 SRST
1124 ``dump-guest-memory [-p]`` *filename* *begin* *length*
1126 ``dump-guest-memory [-z|-l|-s|-w]`` *filename*
1127 Dump guest memory to *protocol*. The file can be processed with crash or
1128 gdb. Without ``-z|-l|-s|-w``, the dump format is ELF.
1130 ``-p``
1131 do paging to get guest's memory mapping.
1132 ``-z``
1133 dump in kdump-compressed format, with zlib compression.
1134 ``-l``
1135 dump in kdump-compressed format, with lzo compression.
1136 ``-s``
1137 dump in kdump-compressed format, with snappy compression.
1138 ``-w``
1139 dump in Windows crashdump format (can be used instead of ELF-dump converting),
1140 for Windows x64 guests with vmcoreinfo driver only
1141 *filename*
1142 dump file name.
1143 *begin*
1144 the starting physical address. It's optional, and should be
1145 specified together with *length*.
1146 *length*
1147 the memory size, in bytes. It's optional, and should be specified
1148 together with *begin*.
1150 ERST
1152 #if defined(TARGET_S390X)
1154 .name = "dump-skeys",
1155 .args_type = "filename:F",
1156 .params = "",
1157 .help = "Save guest storage keys into file 'filename'.\n",
1158 .cmd = hmp_dump_skeys,
1160 #endif
1162 SRST
1163 ``dump-skeys`` *filename*
1164 Save guest storage keys to a file.
1165 ERST
1167 #if defined(TARGET_S390X)
1169 .name = "migration_mode",
1170 .args_type = "mode:i",
1171 .params = "mode",
1172 .help = "Enables or disables migration mode\n",
1173 .cmd = hmp_migrationmode,
1175 #endif
1177 SRST
1178 ``migration_mode`` *mode*
1179 Enables or disables migration mode.
1180 ERST
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,
1197 SRST
1198 ``snapshot_blkdev``
1199 Snapshot device, using snapshot file as target if provided
1200 ERST
1203 .name = "snapshot_blkdev_internal",
1204 .args_type = "device:B,name:s",
1205 .params = "device name",
1206 .help = "take an internal snapshot of device.\n\t\t\t"
1207 "The format of the image used by device must\n\t\t\t"
1208 "support it, such as qcow2.\n\t\t\t",
1209 .cmd = hmp_snapshot_blkdev_internal,
1212 SRST
1213 ``snapshot_blkdev_internal``
1214 Take an internal snapshot on device if it support
1215 ERST
1218 .name = "snapshot_delete_blkdev_internal",
1219 .args_type = "device:B,name:s,id:s?",
1220 .params = "device name [id]",
1221 .help = "delete an internal snapshot of device.\n\t\t\t"
1222 "If id is specified, qemu will try delete\n\t\t\t"
1223 "the snapshot matching both id and name.\n\t\t\t"
1224 "The format of the image used by device must\n\t\t\t"
1225 "support it, such as qcow2.\n\t\t\t",
1226 .cmd = hmp_snapshot_delete_blkdev_internal,
1229 SRST
1230 ``snapshot_delete_blkdev_internal``
1231 Delete an internal snapshot on device if it support
1232 ERST
1235 .name = "drive_mirror",
1236 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
1237 .params = "[-n] [-f] device target [format]",
1238 .help = "initiates live storage\n\t\t\t"
1239 "migration for a device. The device's contents are\n\t\t\t"
1240 "copied to the new image file, including data that\n\t\t\t"
1241 "is written after the command is started.\n\t\t\t"
1242 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1243 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1244 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1245 "so that the result does not need a backing file.\n\t\t\t",
1246 .cmd = hmp_drive_mirror,
1248 SRST
1249 ``drive_mirror``
1250 Start mirroring a block device's writes to a new destination,
1251 using the specified target.
1252 ERST
1255 .name = "drive_backup",
1256 .args_type = "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1257 .params = "[-n] [-f] [-c] device target [format]",
1258 .help = "initiates a point-in-time\n\t\t\t"
1259 "copy for a device. The device's contents are\n\t\t\t"
1260 "copied to the new image file, excluding data that\n\t\t\t"
1261 "is written after the command is started.\n\t\t\t"
1262 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1263 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1264 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1265 "so that the result does not need a backing file.\n\t\t\t"
1266 "The -c flag requests QEMU to compress backup data\n\t\t\t"
1267 "(if the target format supports it).\n\t\t\t",
1268 .cmd = hmp_drive_backup,
1270 SRST
1271 ``drive_backup``
1272 Start a point-in-time copy of a block device to a specified target.
1273 ERST
1276 .name = "drive_add",
1277 .args_type = "node:-n,pci_addr:s,opts:s",
1278 .params = "[-n] [[<domain>:]<bus>:]<slot>\n"
1279 "[file=file][,if=type][,bus=n]\n"
1280 "[,unit=m][,media=d][,index=i]\n"
1281 "[,snapshot=on|off][,cache=on|off]\n"
1282 "[,readonly=on|off][,copy-on-read=on|off]",
1283 .help = "add drive to PCI storage controller",
1284 .cmd = hmp_drive_add,
1287 SRST
1288 ``drive_add``
1289 Add drive to PCI storage controller.
1290 ERST
1293 .name = "pcie_aer_inject_error",
1294 .args_type = "advisory_non_fatal:-a,correctable:-c,"
1295 "id:s,error_status:s,"
1296 "header0:i?,header1:i?,header2:i?,header3:i?,"
1297 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1298 .params = "[-a] [-c] id "
1299 "<error_status> [<tlp header> [<tlp header prefix>]]",
1300 .help = "inject pcie aer error\n\t\t\t"
1301 " -a for advisory non fatal error\n\t\t\t"
1302 " -c for correctable error\n\t\t\t"
1303 "<id> = qdev device id\n\t\t\t"
1304 "<error_status> = error string or 32bit\n\t\t\t"
1305 "<tlb header> = 32bit x 4\n\t\t\t"
1306 "<tlb header prefix> = 32bit x 4",
1307 .cmd = hmp_pcie_aer_inject_error,
1310 SRST
1311 ``pcie_aer_inject_error``
1312 Inject PCIe AER error
1313 ERST
1316 .name = "netdev_add",
1317 .args_type = "netdev:O",
1318 .params = "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1319 .help = "add host network device",
1320 .cmd = hmp_netdev_add,
1321 .command_completion = netdev_add_completion,
1324 SRST
1325 ``netdev_add``
1326 Add host network device.
1327 ERST
1330 .name = "netdev_del",
1331 .args_type = "id:s",
1332 .params = "id",
1333 .help = "remove host network device",
1334 .cmd = hmp_netdev_del,
1335 .command_completion = netdev_del_completion,
1338 SRST
1339 ``netdev_del``
1340 Remove host network device.
1341 ERST
1344 .name = "object_add",
1345 .args_type = "object:O",
1346 .params = "[qom-type=]type,id=str[,prop=value][,...]",
1347 .help = "create QOM object",
1348 .cmd = hmp_object_add,
1349 .command_completion = object_add_completion,
1352 SRST
1353 ``object_add``
1354 Create QOM object.
1355 ERST
1358 .name = "object_del",
1359 .args_type = "id:s",
1360 .params = "id",
1361 .help = "destroy QOM object",
1362 .cmd = hmp_object_del,
1363 .command_completion = object_del_completion,
1366 SRST
1367 ``object_del``
1368 Destroy QOM object.
1369 ERST
1371 #ifdef CONFIG_SLIRP
1373 .name = "hostfwd_add",
1374 .args_type = "arg1:s,arg2:s?",
1375 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1376 .help = "redirect TCP or UDP connections from host to guest (requires -net user)",
1377 .cmd = hmp_hostfwd_add,
1379 #endif
1380 SRST
1381 ``hostfwd_add``
1382 Redirect TCP or UDP connections from host to guest (requires -net user).
1383 ERST
1385 #ifdef CONFIG_SLIRP
1387 .name = "hostfwd_remove",
1388 .args_type = "arg1:s,arg2:s?",
1389 .params = "[netdev_id] [tcp|udp]:[hostaddr]:hostport",
1390 .help = "remove host-to-guest TCP or UDP redirection",
1391 .cmd = hmp_hostfwd_remove,
1394 #endif
1395 SRST
1396 ``hostfwd_remove``
1397 Remove host-to-guest TCP or UDP redirection.
1398 ERST
1401 .name = "balloon",
1402 .args_type = "value:M",
1403 .params = "target",
1404 .help = "request VM to change its memory allocation (in MB)",
1405 .cmd = hmp_balloon,
1408 SRST
1409 ``balloon`` *value*
1410 Request VM to change its memory allocation to *value* (in MB).
1411 ERST
1414 .name = "set_link",
1415 .args_type = "name:s,up:b",
1416 .params = "name on|off",
1417 .help = "change the link status of a network adapter",
1418 .cmd = hmp_set_link,
1419 .command_completion = set_link_completion,
1422 SRST
1423 ``set_link`` *name* ``[on|off]``
1424 Switch link *name* on (i.e. up) or off (i.e. down).
1425 ERST
1428 .name = "watchdog_action",
1429 .args_type = "action:s",
1430 .params = "[reset|shutdown|poweroff|pause|debug|none]",
1431 .help = "change watchdog action",
1432 .cmd = hmp_watchdog_action,
1433 .command_completion = watchdog_action_completion,
1436 SRST
1437 ``watchdog_action``
1438 Change watchdog action.
1439 ERST
1442 .name = "acl_show",
1443 .args_type = "aclname:s",
1444 .params = "aclname",
1445 .help = "list rules in the access control list",
1446 .cmd = hmp_acl_show,
1449 SRST
1450 ``acl_show`` *aclname*
1451 List all the matching rules in the access control list, and the default
1452 policy. There are currently two named access control lists,
1453 *vnc.x509dname* and *vnc.username* matching on the x509 client
1454 certificate distinguished name, and SASL username respectively.
1455 ERST
1458 .name = "acl_policy",
1459 .args_type = "aclname:s,policy:s",
1460 .params = "aclname allow|deny",
1461 .help = "set default access control list policy",
1462 .cmd = hmp_acl_policy,
1465 SRST
1466 ``acl_policy`` *aclname* ``allow|deny``
1467 Set the default access control list policy, used in the event that
1468 none of the explicit rules match. The default policy at startup is
1469 always ``deny``.
1470 ERST
1473 .name = "acl_add",
1474 .args_type = "aclname:s,match:s,policy:s,index:i?",
1475 .params = "aclname match allow|deny [index]",
1476 .help = "add a match rule to the access control list",
1477 .cmd = hmp_acl_add,
1480 SRST
1481 ``acl_add`` *aclname* *match* ``allow|deny`` [*index*]
1482 Add a match rule to the access control list, allowing or denying access.
1483 The match will normally be an exact username or x509 distinguished name,
1484 but can optionally include wildcard globs. eg ``*@EXAMPLE.COM`` to
1485 allow all users in the ``EXAMPLE.COM`` kerberos realm. The match will
1486 normally be appended to the end of the ACL, but can be inserted
1487 earlier in the list if the optional *index* parameter is supplied.
1488 ERST
1491 .name = "acl_remove",
1492 .args_type = "aclname:s,match:s",
1493 .params = "aclname match",
1494 .help = "remove a match rule from the access control list",
1495 .cmd = hmp_acl_remove,
1498 SRST
1499 ``acl_remove`` *aclname* *match*
1500 Remove the specified match rule from the access control list.
1501 ERST
1504 .name = "acl_reset",
1505 .args_type = "aclname:s",
1506 .params = "aclname",
1507 .help = "reset the access control list",
1508 .cmd = hmp_acl_reset,
1511 SRST
1512 ``acl_reset`` *aclname*
1513 Remove all matches from the access control list, and set the default
1514 policy back to ``deny``.
1515 ERST
1518 .name = "nbd_server_start",
1519 .args_type = "all:-a,writable:-w,uri:s",
1520 .params = "nbd_server_start [-a] [-w] host:port",
1521 .help = "serve block devices on the given host and port",
1522 .cmd = hmp_nbd_server_start,
1524 SRST
1525 ``nbd_server_start`` *host*:*port*
1526 Start an NBD server on the given host and/or port. If the ``-a``
1527 option is included, all of the virtual machine's block devices that
1528 have an inserted media on them are automatically exported; in this case,
1529 the ``-w`` option makes the devices writable too.
1530 ERST
1533 .name = "nbd_server_add",
1534 .args_type = "writable:-w,device:B,name:s?",
1535 .params = "nbd_server_add [-w] device [name]",
1536 .help = "export a block device via NBD",
1537 .cmd = hmp_nbd_server_add,
1539 SRST
1540 ``nbd_server_add`` *device* [ *name* ]
1541 Export a block device through QEMU's NBD server, which must be started
1542 beforehand with ``nbd_server_start``. The ``-w`` option makes the
1543 exported device writable too. The export name is controlled by *name*,
1544 defaulting to *device*.
1545 ERST
1548 .name = "nbd_server_remove",
1549 .args_type = "force:-f,name:s",
1550 .params = "nbd_server_remove [-f] name",
1551 .help = "remove an export previously exposed via NBD",
1552 .cmd = hmp_nbd_server_remove,
1554 SRST
1555 ``nbd_server_remove [-f]`` *name*
1556 Stop exporting a block device through QEMU's NBD server, which was
1557 previously started with ``nbd_server_add``. The ``-f``
1558 option forces the server to drop the export immediately even if
1559 clients are connected; otherwise the command fails unless there are no
1560 clients.
1561 ERST
1564 .name = "nbd_server_stop",
1565 .args_type = "",
1566 .params = "nbd_server_stop",
1567 .help = "stop serving block devices using the NBD protocol",
1568 .cmd = hmp_nbd_server_stop,
1570 SRST
1571 ``nbd_server_stop``
1572 Stop the QEMU embedded NBD server.
1573 ERST
1576 #if defined(TARGET_I386)
1579 .name = "mce",
1580 .args_type = "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1581 .params = "[-b] cpu bank status mcgstatus addr misc",
1582 .help = "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1583 .cmd = hmp_mce,
1586 #endif
1587 SRST
1588 ``mce`` *cpu* *bank* *status* *mcgstatus* *addr* *misc*
1589 Inject an MCE on the given CPU (x86 only).
1590 ERST
1593 .name = "getfd",
1594 .args_type = "fdname:s",
1595 .params = "getfd name",
1596 .help = "receive a file descriptor via SCM rights and assign it a name",
1597 .cmd = hmp_getfd,
1600 SRST
1601 ``getfd`` *fdname*
1602 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1603 mechanism on unix sockets, it is stored using the name *fdname* for
1604 later use by other monitor commands.
1605 ERST
1608 .name = "closefd",
1609 .args_type = "fdname:s",
1610 .params = "closefd name",
1611 .help = "close a file descriptor previously passed via SCM rights",
1612 .cmd = hmp_closefd,
1615 SRST
1616 ``closefd`` *fdname*
1617 Close the file descriptor previously assigned to *fdname* using the
1618 ``getfd`` command. This is only needed if the file descriptor was never
1619 used by another monitor command.
1620 ERST
1623 .name = "block_passwd",
1624 .args_type = "device:B,password:s",
1625 .params = "block_passwd device password",
1626 .help = "set the password of encrypted block devices",
1627 .cmd = hmp_block_passwd,
1630 SRST
1631 ``block_passwd`` *device* *password*
1632 Set the encrypted device *device* password to *password*
1634 This command is now obsolete and will always return an error since 2.10
1635 ERST
1638 .name = "block_set_io_throttle",
1639 .args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1640 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr",
1641 .help = "change I/O throttle limits for a block drive",
1642 .cmd = hmp_block_set_io_throttle,
1645 SRST
1646 ``block_set_io_throttle`` *device* *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*
1647 Change I/O throttle limits for a block drive to
1648 *bps* *bps_rd* *bps_wr* *iops* *iops_rd* *iops_wr*.
1649 *device* can be a block device name, a qdev ID or a QOM path.
1650 ERST
1653 .name = "set_password",
1654 .args_type = "protocol:s,password:s,connected:s?",
1655 .params = "protocol password action-if-connected",
1656 .help = "set spice/vnc password",
1657 .cmd = hmp_set_password,
1660 SRST
1661 ``set_password [ vnc | spice ] password [ action-if-connected ]``
1662 Change spice/vnc password. Use zero to make the password stay valid
1663 forever. *action-if-connected* specifies what should happen in
1664 case a connection is established: *fail* makes the password change
1665 fail. *disconnect* changes the password and disconnects the
1666 client. *keep* changes the password and keeps the connection up.
1667 *keep* is the default.
1668 ERST
1671 .name = "expire_password",
1672 .args_type = "protocol:s,time:s",
1673 .params = "protocol time",
1674 .help = "set spice/vnc password expire-time",
1675 .cmd = hmp_expire_password,
1678 SRST
1679 ``expire_password [ vnc | spice ]`` *expire-time*
1680 Specify when a password for spice/vnc becomes
1681 invalid. *expire-time* accepts:
1683 ``now``
1684 Invalidate password instantly.
1685 ``never``
1686 Password stays valid forever.
1687 ``+``\ *nsec*
1688 Password stays valid for *nsec* seconds starting now.
1689 *nsec*
1690 Password is invalidated at the given time. *nsec* are the seconds
1691 passed since 1970, i.e. unix epoch.
1693 ERST
1696 .name = "chardev-add",
1697 .args_type = "args:s",
1698 .params = "args",
1699 .help = "add chardev",
1700 .cmd = hmp_chardev_add,
1701 .command_completion = chardev_add_completion,
1704 SRST
1705 ``chardev-add`` *args*
1706 chardev-add accepts the same parameters as the -chardev command line switch.
1707 ERST
1710 .name = "chardev-change",
1711 .args_type = "id:s,args:s",
1712 .params = "id args",
1713 .help = "change chardev",
1714 .cmd = hmp_chardev_change,
1717 SRST
1718 ``chardev-change`` *args*
1719 chardev-change accepts existing chardev *id* and then the same arguments
1720 as the -chardev command line switch (except for "id").
1721 ERST
1724 .name = "chardev-remove",
1725 .args_type = "id:s",
1726 .params = "id",
1727 .help = "remove chardev",
1728 .cmd = hmp_chardev_remove,
1729 .command_completion = chardev_remove_completion,
1732 SRST
1733 ``chardev-remove`` *id*
1734 Removes the chardev *id*.
1735 ERST
1738 .name = "chardev-send-break",
1739 .args_type = "id:s",
1740 .params = "id",
1741 .help = "send a break on chardev",
1742 .cmd = hmp_chardev_send_break,
1743 .command_completion = chardev_remove_completion,
1746 SRST
1747 ``chardev-send-break`` *id*
1748 Send a break on the chardev *id*.
1749 ERST
1752 .name = "qemu-io",
1753 .args_type = "qdev:-d,device:B,command:s",
1754 .params = "[-d] [device] \"[command]\"",
1755 .help = "run a qemu-io command on a block device\n\t\t\t"
1756 "-d: [device] is a device ID rather than a "
1757 "drive ID or node name",
1758 .cmd = hmp_qemu_io,
1761 SRST
1762 ``qemu-io`` *device* *command*
1763 Executes a qemu-io command on the given block device.
1764 ERST
1767 .name = "qom-list",
1768 .args_type = "path:s?",
1769 .params = "path",
1770 .help = "list QOM properties",
1771 .cmd = hmp_qom_list,
1772 .flags = "p",
1775 SRST
1776 ``qom-list`` [*path*]
1777 Print QOM properties of object at location *path*
1778 ERST
1781 .name = "qom-get",
1782 .args_type = "path:s,property:s",
1783 .params = "path property",
1784 .help = "print QOM property",
1785 .cmd = hmp_qom_get,
1786 .flags = "p",
1789 SRST
1790 ``qom-get`` *path* *property*
1791 Print QOM property *property* of object at location *path*
1792 ERST
1795 .name = "qom-set",
1796 .args_type = "json:-j,path:s,property:s,value:S",
1797 .params = "[-j] path property value",
1798 .help = "set QOM property.\n\t\t\t"
1799 "-j: the value is specified in json format.",
1800 .cmd = hmp_qom_set,
1801 .flags = "p",
1804 SRST
1805 ``qom-set`` *path* *property* *value*
1806 Set QOM property *property* of object at location *path* to value *value*
1807 ERST
1810 .name = "replay_break",
1811 .args_type = "icount:i",
1812 .params = "icount",
1813 .help = "set breakpoint at the specified instruction count",
1814 .cmd = hmp_replay_break,
1817 SRST
1818 ``replay_break`` *icount*
1819 Set replay breakpoint at instruction count *icount*.
1820 Execution stops when the specified instruction is reached.
1821 There can be at most one breakpoint. When breakpoint is set, any prior
1822 one is removed. The breakpoint may be set only in replay mode and only
1823 "in the future", i.e. at instruction counts greater than the current one.
1824 The current instruction count can be observed with ``info replay``.
1825 ERST
1828 .name = "replay_delete_break",
1829 .args_type = "",
1830 .params = "",
1831 .help = "remove replay breakpoint",
1832 .cmd = hmp_replay_delete_break,
1835 SRST
1836 ``replay_delete_break``
1837 Remove replay breakpoint which was previously set with ``replay_break``.
1838 The command is ignored when there are no replay breakpoints.
1839 ERST
1842 .name = "replay_seek",
1843 .args_type = "icount:i",
1844 .params = "icount",
1845 .help = "replay execution to the specified instruction count",
1846 .cmd = hmp_replay_seek,
1849 SRST
1850 ``replay_seek`` *icount*
1851 Automatically proceed to the instruction count *icount*, when
1852 replaying the execution. The command automatically loads nearest
1853 snapshot and replays the execution to find the desired instruction.
1854 When there is no preceding snapshot or the execution is not replayed,
1855 then the command fails.
1856 *icount* for the reference may be observed with ``info replay`` command.
1857 ERST
1860 .name = "info",
1861 .args_type = "item:s?",
1862 .params = "[subcommand]",
1863 .help = "show various information about the system state",
1864 .cmd = hmp_info_help,
1865 .sub_table = hmp_info_cmds,
1866 .flags = "p",