1 HXCOMM Use
DEFHEADING() to define headings
in both help text and texi
2 HXCOMM Text between STEXI and ETEXI are copied to texi version and
3 HXCOMM discarded from C version
4 HXCOMM Text between SQMP and EQMP is copied to the QMP documention file and
5 HXCOMM does not show up
in the other formats
.
6 HXCOMM
DEF(command
, args
, callback, arg_string
, help
) is used to construct
7 HXCOMM monitor commands
8 HXCOMM HXCOMM can be used
for comments
, discarded from both texi and C
11 QMP Supported Commands
12 ----------------------
14 This document describes all commands currently supported by QMP
.
16 Most of the time their usage is exactly the same as
in the user Monitor
, this
17 means that any other document which also describe
commands (the manpage
,
18 QEMU
's manual, etc) can and should be consulted.
20 QMP has two types of commands: regular and query commands. Regular commands
21 usually change the Virtual Machine's state someway
, while query commands just
22 return information
. The sections below are divided accordingly
.
24 It
's important to observe that all communication examples are formatted in
25 a reader-friendly way, so that they're easier to understand
. However
, in real
26 protocol usage
, they
're emitted as a single line.
28 Also, the following notation is used to denote data flow:
30 -> data issued by the Client
31 <- Server data response
33 Please, refer to the QMP specification (QMP/qmp-spec.txt) for detailed
34 information on the Server command and response formats.
36 NOTE: This document is temporary and will be replaced soon.
38 1. Stability Considerations
39 ===========================
41 The current QMP command set (described in this file) may be useful for a
42 number of use cases, however it's limited and several commands have bad
43 defined semantics
, specially with regard to command completion
.
45 These problems are going to be solved incrementally
in the next QEMU releases
46 and we
're going to establish a deprecation policy for badly defined commands.
48 If you're planning to adopt QMP
, please observe the following
:
50 1. The deprecation policy will take efect and be documented soon
, please
51 check the documentation of each used command as soon as a
new release of
54 2. DO NOT rely on anything which is not explicit documented
56 3. Errors
, in special
, are not documented
. Applications should NOT check
57 for specific errors classes or
data (it
's strongly recommended to only
58 check for the "error" key)
63 Server's responses
in the examples below are always a success response
, please
64 refer to the QMP specification
for more details on error responses
.
74 .args_type
= "name:s?",
76 .help
= "show the help",
77 .mhandler
.cmd
= do_help_cmd
,
81 @item help or ?
[@
var{cmd
}]
83 Show the help
for all commands or just
for command @
var{cmd
}.
88 .args_type
= "device:B",
89 .params
= "device|all",
90 .help
= "commit changes to the disk images (if -snapshot is used) or backing files",
91 .mhandler
.cmd
= do_commit
,
97 Commit changes to the disk
images (if -snapshot is used
) or backing files
.
104 .help
= "quit the emulator",
105 .user_print
= monitor_user_noop
,
106 .mhandler
.cmd_new
= do_quit
,
124 -> { "execute": "quit" }
131 .args_type
= "force:-f,device:B",
132 .params
= "[-f] device",
133 .help
= "eject a removable medium (use -f to force it)",
134 .user_print
= monitor_user_noop
,
135 .mhandler
.cmd_new
= do_eject
,
139 @item eject
[-f
] @
var{device
}
141 Eject a removable
medium (use
-f to force it
).
147 Eject a removable medium
.
151 - force
: force
ejection (json
-bool
, optional
)
152 - device
: device
name (json
-string
)
156 -> { "execute": "eject", "arguments": { "device": "ide1-cd0" } }
159 Note
: The
"force" argument defaults to
false.
165 .args_type
= "device:B,target:F,arg:s?",
166 .params
= "device filename [format]",
167 .help
= "change a removable medium, optional format",
168 .user_print
= monitor_user_noop
,
169 .mhandler
.cmd_new
= do_change
,
173 @item change @
var{device
} @
var{setting
}
176 Change the configuration of a device
.
179 @item change @
var{diskdevice
} @
var{filename
} [@
var{format
}]
180 Change the medium
for a removable disk device to point to @
var{filename
}. eg
183 (qemu
) change ide1
-cd0
/path
/to
/some
.iso
186 @
var{format
} is optional
.
188 @item change vnc @
var{display
},@
var{options
}
189 Change the configuration of the VNC server
. The valid syntax
for @
var{display
}
190 and @
var{options
} are described at @ref
{sec_invocation
}. eg
193 (qemu
) change vnc localhost
:1
196 @item change vnc password
[@
var{password
}]
198 Change the password associated with the VNC server
. If the
new password is not
199 supplied
, the monitor will prompt
for it to be entered
. VNC passwords are only
200 significant up to
8 letters
. eg
203 (qemu
) change vnc password
213 Change a removable medium or VNC configuration
.
217 - "device": device
name (json
-string
)
218 - "target": filename or
item (json
-string
)
219 - "arg": additional
argument (json
-string
, optional
)
223 1. Change a removable medium
225 -> { "execute": "change",
226 "arguments": { "device": "ide1-cd0",
227 "target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
230 2. Change VNC password
232 -> { "execute": "change",
233 "arguments": { "device": "vnc", "target": "password",
240 .name
= "screendump",
241 .args_type
= "filename:F",
242 .params
= "filename",
243 .help
= "save screen into PPM image 'filename'",
244 .user_print
= monitor_user_noop
,
245 .mhandler
.cmd_new
= do_screen_dump
,
249 @item screendump @
var{filename
}
251 Save screen into PPM image @
var{filename
}.
257 Save screen into PPM image
.
261 - "filename": file
path (json
-string
)
265 -> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } }
272 .args_type
= "filename:F",
273 .params
= "filename",
274 .help
= "output logs to 'filename'",
275 .mhandler
.cmd
= do_logfile
,
279 @item logfile @
var{filename
}
281 Output logs to @
var{filename
}.
284 #ifdef CONFIG_SIMPLE_TRACE
286 .name
= "trace-event",
287 .args_type
= "name:s,option:b",
288 .params
= "name on|off",
289 .help
= "changes status of a specific trace event",
290 .mhandler
.cmd
= do_change_trace_event_state
,
296 changes status of a
trace event
300 .name
= "trace-file",
301 .args_type
= "op:s?,arg:F?",
302 .params
= "on|off|flush|set [arg]",
303 .help
= "open, close, or flush trace file, or set a new file name",
304 .mhandler
.cmd
= do_trace_file
,
308 @item
trace-file on|off|flush
310 Open
, close
, or flush the
trace file
. If no argument is given
, the status of the
trace file is displayed
.
316 .args_type
= "items:s",
317 .params
= "item1[,...]",
318 .help
= "activate logging of the specified items to '/tmp/qemu.log'",
319 .mhandler
.cmd
= do_log
,
323 @item log @
var{item1
}[,...]
325 Activate logging of the specified items to @file
{/tmp
/qemu
.log
}.
330 .args_type
= "name:s?",
331 .params
= "[tag|id]",
332 .help
= "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
333 .mhandler
.cmd
= do_savevm
,
337 @item savevm
[@
var{tag
}|@
var{id
}]
339 Create a snapshot of the whole virtual machine
. If @
var{tag
} is
340 provided
, it is used as human readable identifier
. If there is already
341 a snapshot with the same tag or ID
, it is replaced
. More info at
347 .args_type
= "name:s",
349 .help
= "restore a VM snapshot from its tag or id",
350 .mhandler
.cmd
= do_loadvm
,
354 @item loadvm @
var{tag
}|@
var{id
}
356 Set the whole virtual machine to the snapshot identified by the tag
357 @
var{tag
} or the unique snapshot ID @
var{id
}.
362 .args_type
= "name:s",
364 .help
= "delete a VM snapshot from its tag or id",
365 .mhandler
.cmd
= do_delvm
,
369 @item delvm @
var{tag
}|@
var{id
}
371 Delete the snapshot identified by @
var{tag
} or @
var{id
}.
375 .name
= "singlestep",
376 .args_type
= "option:s?",
377 .params
= "[on|off]",
378 .help
= "run emulation in singlestep mode or switch to normal mode",
379 .mhandler
.cmd
= do_singlestep
,
383 @item singlestep
[off
]
385 Run the emulation
in single step mode
.
386 If called with option off
, the emulation returns to normal mode
.
393 .help
= "stop emulation",
394 .user_print
= monitor_user_noop
,
395 .mhandler
.cmd_new
= do_stop
,
413 -> { "execute": "stop" }
422 .help
= "resume emulation",
423 .user_print
= monitor_user_noop
,
424 .mhandler
.cmd_new
= do_cont
,
442 -> { "execute": "cont" }
449 .args_type
= "device:s?",
450 .params
= "[device]",
451 .help
= "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
452 .mhandler
.cmd
= do_gdbserver
,
456 @item gdbserver
[@
var{port
}]
458 Start gdbserver
session (default @
var{port
}=1234)
463 .args_type
= "fmt:/,addr:l",
464 .params
= "/fmt addr",
465 .help
= "virtual memory dump starting at 'addr'",
466 .mhandler
.cmd
= do_memory_dump
,
470 @item x
/fmt @
var{addr
}
472 Virtual memory dump starting at @
var{addr
}.
477 .args_type
= "fmt:/,addr:l",
478 .params
= "/fmt addr",
479 .help
= "physical memory dump starting at 'addr'",
480 .mhandler
.cmd
= do_physical_memory_dump
,
484 @item xp
/@
var{fmt
} @
var{addr
}
486 Physical memory dump starting at @
var{addr
}.
488 @
var{fmt
} is a format which tells the command how to format the
489 data
. Its syntax is
: @option
{/@
{count@
}@
{format@
}@
{size@
}}
493 is the number of items to be dumped
.
496 can be
x (hex
), d (signed decimal
), u (unsigned decimal
), o (octal
),
497 c (char
) or
i (asm instruction
).
500 can be
b (8 bits
), h (16 bits
), w (32 bits
) or
g (64 bits
). On x86
,
501 @code
{h
} or @code
{w
} can be specified with the @code
{i
} format to
502 respectively select
16 or
32 bit code instruction size
.
509 Dump
10 instructions at the current instruction pointer
:
514 0x90107065: lea
0x0(%esi
,1),%esi
515 0x90107069: lea
0x0(%edi
,1),%edi
517 0x90107071: jmp
0x90107080
525 Dump
80 16 bit values at the start of the video memory
.
527 (qemu
) xp
/80hx
0xb8000
528 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
529 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
530 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
531 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
532 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
533 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
534 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
535 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
536 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
537 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
544 .args_type
= "fmt:/,val:l",
545 .params
= "/fmt expr",
546 .help
= "print expression value (use $reg for CPU register access)",
547 .mhandler
.cmd
= do_print
,
551 @item p or print
/@
var{fmt
} @
var{expr
}
554 Print expression value
. Only the @
var{format
} part of @
var{fmt
} is
560 .args_type
= "fmt:/,addr:i,index:i.",
561 .params
= "/fmt addr",
562 .help
= "I/O port read",
563 .mhandler
.cmd
= do_ioport_read
,
572 .args_type
= "fmt:/,addr:i,val:i",
573 .params
= "/fmt addr value",
574 .help
= "I/O port write",
575 .mhandler
.cmd
= do_ioport_write
,
584 .args_type
= "string:s,hold_time:i?",
585 .params
= "keys [hold_ms]",
586 .help
= "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
587 .mhandler
.cmd
= do_sendkey
,
591 @item sendkey @
var{keys
}
594 Send @
var{keys
} to the emulator
. @
var{keys
} could be the name of the
595 key or @code
{#
} followed by the raw value
in either decimal or hexadecimal
596 format
. Use @code
{-} to press several keys simultaneously
. Example
:
601 This command is useful to send keys that your graphical user
interface
602 intercepts at low level
, such as @code
{ctrl
-alt
-f1
} in X Window
.
606 .name
= "system_reset",
609 .help
= "reset the system",
610 .user_print
= monitor_user_noop
,
611 .mhandler
.cmd_new
= do_system_reset
,
630 -> { "execute": "system_reset" }
636 .name
= "system_powerdown",
639 .help
= "send system power down event",
640 .user_print
= monitor_user_noop
,
641 .mhandler
.cmd_new
= do_system_powerdown
,
645 @item system_powerdown
646 @findex system_powerdown
648 Power down the
system (if supported
).
654 Send system power down event
.
660 -> { "execute": "system_powerdown" }
667 .args_type
= "start:i,size:i",
668 .params
= "addr size",
669 .help
= "compute the checksum of a memory region",
670 .mhandler
.cmd
= do_sum
,
674 @item sum @
var{addr
} @
var{size
}
677 Compute the checksum of a memory region
.
682 .args_type
= "devname:s",
684 .help
= "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')",
685 .mhandler
.cmd
= do_usb_add
,
689 @item usb_add @
var{devname
}
692 Add the USB device @
var{devname
}. For details of available devices see
698 .args_type
= "devname:s",
700 .help
= "remove USB device 'bus.addr'",
701 .mhandler
.cmd
= do_usb_del
,
705 @item usb_del @
var{devname
}
708 Remove the USB device @
var{devname
} from the QEMU virtual USB
709 hub
. @
var{devname
} has the syntax @code
{bus
.addr
}. Use the monitor
710 command @code
{info usb
} to see the devices you can remove
.
714 .name
= "device_add",
715 .args_type
= "device:O",
716 .params
= "driver[,prop=value][,...]",
717 .help
= "add device, like -device on the command line",
718 .user_print
= monitor_user_noop
,
719 .mhandler
.cmd_new
= do_device_add
,
723 @item device_add @
var{config
}
736 - "driver": the name of the
new device
's driver (json-string)
737 - "bus": the device's parent
bus (device tree path
, json
-string
, optional
)
738 - "id": the device
's ID, must be unique (json-string)
743 -> { "execute": "device_add", "arguments": { "driver": "e1000", "id": "net1" } }
748 (1) For detailed information about this command, please refer to the
749 'docs
/qdev
-device
-use
.txt
' file.
751 (2) It's possible to list device properties by running QEMU with the
752 "-device DEVICE,\?" command
-line argument
, where DEVICE is the device
's name
757 .name = "device_del",
760 .help = "remove device",
761 .user_print = monitor_user_noop,
762 .mhandler.cmd_new = do_device_del,
766 @item device_del @var{id}
769 Remove device @var{id}.
779 - "id": the device's
ID (json
-string
)
783 -> { "execute": "device_del", "arguments": { "id": "net1" } }
790 .args_type
= "index:i",
792 .help
= "set the default CPU",
793 .user_print
= monitor_user_noop
,
794 .mhandler
.cmd_new
= do_cpu_set
,
798 @item cpu @
var{index
}
810 - "index": the CPU
's index (json-int)
814 -> { "execute": "cpu", "arguments": { "index": 0 } }
817 Note: CPUs' indexes are obtained with the
'query-cpus' command
.
822 .name
= "mouse_move",
823 .args_type
= "dx_str:s,dy_str:s,dz_str:s?",
824 .params
= "dx dy [dz]",
825 .help
= "send mouse move events",
826 .mhandler
.cmd
= do_mouse_move
,
830 @item mouse_move @
var{dx
} @
var{dy
} [@
var{dz
}]
832 Move the active mouse to the specified coordinates @
var{dx
} @
var{dy
}
833 with optional scroll axis @
var{dz
}.
837 .name
= "mouse_button",
838 .args_type
= "button_state:i",
840 .help
= "change mouse button state (1=L, 2=M, 4=R)",
841 .mhandler
.cmd
= do_mouse_button
,
845 @item mouse_button @
var{val
}
847 Change the active mouse button state @
var{val
} (1=L
, 2=M
, 4=R
).
852 .args_type
= "index:i",
854 .help
= "set which mouse device receives events",
855 .mhandler
.cmd
= do_mouse_set
,
859 @item mouse_set @
var{index
}
861 Set which mouse device receives events at given @
var{index
}, index
870 .name
= "wavcapture",
871 .args_type
= "path:F,freq:i?,bits:i?,nchannels:i?",
872 .params
= "path [frequency [bits [channels]]]",
873 .help
= "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
874 .mhandler
.cmd
= do_wav_capture
,
878 @item wavcapture @
var{filename
} [@
var{frequency
} [@
var{bits
} [@
var{channels
}]]]
880 Capture audio into @
var{filename
}. Using sample rate @
var{frequency
}
881 bits per sample @
var{bits
} and number of channels @
var{channels
}.
885 @item Sample rate
= 44100 Hz
- CD quality
887 @item Number of channels
= 2 - Stereo
893 .name
= "stopcapture",
895 .params
= "capture index",
896 .help
= "stop capture",
897 .mhandler
.cmd
= do_stop_capture
,
901 @item stopcapture @
var{index
}
903 Stop capture with a given @
var{index
}, index can be obtained with
911 .args_type
= "val:l,size:i,filename:s",
912 .params
= "addr size file",
913 .help
= "save to disk virtual memory dump starting at 'addr' of size 'size'",
914 .user_print
= monitor_user_noop
,
915 .mhandler
.cmd_new
= do_memory_save
,
919 @item memsave @
var{addr
} @
var{size
} @
var{file
}
921 save to disk virtual memory dump starting at @
var{addr
} of size @
var{size
}.
927 Save to disk virtual memory dump starting at
'val' of size
'size'.
931 - "val": the starting
address (json
-int
)
932 - "size": the memory size
, in bytes (json
-int
)
933 - "filename": file
path (json
-string
)
937 -> { "execute": "memsave",
938 "arguments": { "val": 10,
940 "filename": "/tmp/virtual-mem-dump" } }
943 Note
: Depends on the current CPU
.
949 .args_type
= "val:l,size:i,filename:s",
950 .params
= "addr size file",
951 .help
= "save to disk physical memory dump starting at 'addr' of size 'size'",
952 .user_print
= monitor_user_noop
,
953 .mhandler
.cmd_new
= do_physical_memory_save
,
957 @item pmemsave @
var{addr
} @
var{size
} @
var{file
}
959 save to disk physical memory dump starting at @
var{addr
} of size @
var{size
}.
965 Save to disk physical memory dump starting at
'val' of size
'size'.
969 - "val": the starting
address (json
-int
)
970 - "size": the memory size
, in bytes (json
-int
)
971 - "filename": file
path (json
-string
)
975 -> { "execute": "pmemsave",
976 "arguments": { "val": 10,
978 "filename": "/tmp/physical-mem-dump" } }
985 .args_type
= "bootdevice:s",
986 .params
= "bootdevice",
987 .help
= "define new values for the boot device list",
988 .mhandler
.cmd
= do_boot_set
,
992 @item boot_set @
var{bootdevicelist
}
995 Define
new values
for the boot device list
. Those values will
override
996 the values specified on the command line through the @code
{-boot
} option
.
998 The values that can be specified
here depend on the machine type
, but are
999 the same that can be specified
in the @code
{-boot
} command line option
.
1002 #
if defined(TARGET_I386
)
1005 .args_type
= "cpu_index:i",
1007 .help
= "inject an NMI on the given CPU",
1008 .mhandler
.cmd
= do_inject_nmi
,
1014 Inject an NMI on the given
CPU (x86 only
).
1019 .args_type
= "detach:-d,blk:-b,inc:-i,uri:s",
1020 .params
= "[-d] [-b] [-i] uri",
1021 .help
= "migrate to URI (using -d to not wait for completion)"
1022 "\n\t\t\t -b for migration without shared storage with"
1023 " full copy of disk\n\t\t\t -i for migration without "
1024 "shared storage with incremental copy of disk "
1025 "(base image shared between src and destination)",
1026 .user_print
= monitor_user_noop
,
1027 .mhandler
.cmd_new
= do_migrate
,
1032 @item migrate
[-d
] [-b
] [-i
] @
var{uri
}
1034 Migrate to @
var{uri
} (using -d to not wait
for completion
).
1035 -b
for migration with full copy of disk
1036 -i
for migration with incremental copy of
disk (base image is shared
)
1046 - "blk": block migration
, full disk
copy (json
-bool
, optional
)
1047 - "inc": incremental disk
copy (json
-bool
, optional
)
1048 - "uri": Destination
URI (json
-string
)
1052 -> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } }
1057 (1) The
'query-migrate' command should be used to check migration
's progress
1058 and final result (this information is provided by the 'status
' member)
1059 (2) All boolean arguments default to false
1060 (3) The user Monitor's
"detach" argument is invalid
in QMP and should not
1066 .name
= "migrate_cancel",
1069 .help
= "cancel the current VM migration",
1070 .user_print
= monitor_user_noop
,
1071 .mhandler
.cmd_new
= do_migrate_cancel
,
1075 @item migrate_cancel
1076 @findex migrate_cancel
1077 Cancel the current VM migration
.
1083 Cancel the current migration
.
1089 -> { "execute": "migrate_cancel" }
1095 .name
= "migrate_set_speed",
1096 .args_type
= "value:f",
1098 .help
= "set maximum speed (in bytes) for migrations",
1099 .user_print
= monitor_user_noop
,
1100 .mhandler
.cmd_new
= do_migrate_set_speed
,
1104 @item migrate_set_speed @
var{value
}
1105 @findex migrate_set_speed
1106 Set maximum speed to @
var{value
} (in bytes
) for migrations
.
1112 Set maximum speed
for migrations
.
1116 - "value": maximum speed
, in bytes per
second (json
-number
)
1120 -> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
1126 .name
= "migrate_set_downtime",
1127 .args_type
= "value:T",
1129 .help
= "set maximum tolerated downtime (in seconds) for migrations",
1130 .user_print
= monitor_user_noop
,
1131 .mhandler
.cmd_new
= do_migrate_set_downtime
,
1135 @item migrate_set_downtime @
var{second
}
1136 @findex migrate_set_downtime
1137 Set maximum tolerated
downtime (in seconds
) for migration
.
1140 migrate_set_downtime
1141 --------------------
1143 Set maximum tolerated
downtime (in seconds
) for migrations
.
1147 - "value": maximum
downtime (json
-number
)
1151 -> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
1156 #
if defined(TARGET_I386
)
1158 .name
= "drive_add",
1159 .args_type
= "pci_addr:s,opts:s",
1160 .params
= "[[<domain>:]<bus>:]<slot>\n"
1161 "[file=file][,if=type][,bus=n]\n"
1162 "[,unit=m][,media=d][index=i]\n"
1163 "[,cyls=c,heads=h,secs=s[,trans=t]]\n"
1164 "[snapshot=on|off][,cache=on|off]",
1165 .help
= "add drive to PCI storage controller",
1166 .mhandler
.cmd
= drive_hot_add
,
1173 Add drive to PCI storage controller
.
1176 #
if defined(TARGET_I386
)
1179 .args_type
= "pci_addr:s,type:s,opts:s?",
1180 .params
= "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...",
1181 .help
= "hot-add PCI device",
1182 .mhandler
.cmd
= pci_device_hot_add
,
1192 #
if defined(TARGET_I386
)
1195 .args_type
= "pci_addr:s",
1196 .params
= "[[<domain>:]<bus>:]<slot>",
1197 .help
= "hot remove PCI device",
1198 .mhandler
.cmd
= do_pci_device_hot_remove
,
1205 Hot remove PCI device
.
1209 .name
= "host_net_add",
1210 .args_type
= "device:s,opts:s?",
1211 .params
= "tap|user|socket|vde|dump [options]",
1212 .help
= "add host VLAN client",
1213 .mhandler
.cmd
= net_host_device_add
,
1218 @findex host_net_add
1219 Add host VLAN client
.
1223 .name
= "host_net_remove",
1224 .args_type
= "vlan_id:i,device:s",
1225 .params
= "vlan_id name",
1226 .help
= "remove host VLAN client",
1227 .mhandler
.cmd
= net_host_device_remove
,
1231 @item host_net_remove
1232 @findex host_net_remove
1233 Remove host VLAN client
.
1237 .name
= "netdev_add",
1238 .args_type
= "netdev:O",
1239 .params
= "[user|tap|socket],id=str[,prop=value][,...]",
1240 .help
= "add host network device",
1241 .user_print
= monitor_user_noop
,
1242 .mhandler
.cmd_new
= do_netdev_add
,
1248 Add host network device
.
1254 Add host network device
.
1258 - "type": the device type
, "tap", "user", ... (json
-string
)
1259 - "id": the device
's ID, must be unique (json-string)
1264 -> { "execute": "netdev_add", "arguments": { "type": "user", "id": "netdev1" } }
1267 Note: The supported device options are the same ones supported by the '-net
'
1268 command-line argument, which are listed in the '-help
' output or QEMU's
1274 .name
= "netdev_del",
1275 .args_type
= "id:s",
1277 .help
= "remove host network device",
1278 .user_print
= monitor_user_noop
,
1279 .mhandler
.cmd_new
= do_netdev_del
,
1285 Remove host network device
.
1291 Remove host network device
.
1295 - "id": the device
's ID, must be unique (json-string)
1299 -> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
1306 .name = "hostfwd_add",
1307 .args_type = "arg1:s,arg2:s?,arg3:s?",
1308 .params = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1309 .help = "redirect TCP or UDP connections from host to guest (requires -net user)",
1310 .mhandler.cmd = net_slirp_hostfwd_add,
1316 Redirect TCP or UDP connections from host to guest (requires -net user).
1321 .name = "hostfwd_remove",
1322 .args_type = "arg1:s,arg2:s?,arg3:s?",
1323 .params = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
1324 .help = "remove host-to-guest TCP or UDP redirection",
1325 .mhandler.cmd = net_slirp_hostfwd_remove,
1330 @item hostfwd_remove
1331 @findex hostfwd_remove
1332 Remove host-to-guest TCP or UDP redirection.
1337 .args_type = "value:M",
1339 .help = "request VM to change its memory allocation (in MB)",
1340 .user_print = monitor_user_noop,
1341 .mhandler.cmd_async = do_balloon,
1342 .flags = MONITOR_CMD_ASYNC,
1346 @item balloon @var{value}
1348 Request VM to change its memory allocation to @var{value} (in MB).
1354 Request VM to change its memory allocation (in bytes).
1358 - "value": New memory allocation (json-int)
1362 -> { "execute": "balloon", "arguments": { "value": 536870912 } }
1369 .args_type = "name:s,up:b",
1370 .params = "name on|off",
1371 .help = "change the link status of a network adapter",
1372 .user_print = monitor_user_noop,
1373 .mhandler.cmd_new = do_set_link,
1377 @item set_link @var{name} [on|off]
1379 Switch link @var{name} on (i.e. up) or off (i.e. down).
1385 Change the link status of a network adapter.
1389 - "name": network device name (json-string)
1390 - "up": status is up (json-bool)
1394 -> { "execute": "set_link", "arguments": { "name": "e1000.0", "up": false } }
1400 .name = "watchdog_action",
1401 .args_type = "action:s",
1402 .params = "[reset|shutdown|poweroff|pause|debug|none]",
1403 .help = "change watchdog action",
1404 .mhandler.cmd = do_watchdog_action,
1408 @item watchdog_action
1409 @findex watchdog_action
1410 Change watchdog action.
1415 .args_type = "aclname:s",
1416 .params = "aclname",
1417 .help = "list rules in the access control list",
1418 .mhandler.cmd = do_acl_show,
1422 @item acl_show @var{aclname}
1424 List all the matching rules in the access control list, and the default
1425 policy. There are currently two named access control lists,
1426 @var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1427 certificate distinguished name, and SASL username respectively.
1431 .name = "acl_policy",
1432 .args_type = "aclname:s,policy:s",
1433 .params = "aclname allow|deny",
1434 .help = "set default access control list policy",
1435 .mhandler.cmd = do_acl_policy,
1439 @item acl_policy @var{aclname} @code{allow|deny}
1441 Set the default access control list policy, used in the event that
1442 none of the explicit rules match. The default policy at startup is
1448 .args_type = "aclname:s,match:s,policy:s,index:i?",
1449 .params = "aclname match allow|deny [index]",
1450 .help = "add a match rule to the access control list",
1451 .mhandler.cmd = do_acl_add,
1455 @item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1457 Add a match rule to the access control list, allowing or denying access.
1458 The match will normally be an exact username or x509 distinguished name,
1459 but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1460 allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1461 normally be appended to the end of the ACL, but can be inserted
1462 earlier in the list if the optional @var{index} parameter is supplied.
1466 .name = "acl_remove",
1467 .args_type = "aclname:s,match:s",
1468 .params = "aclname match",
1469 .help = "remove a match rule from the access control list",
1470 .mhandler.cmd = do_acl_remove,
1474 @item acl_remove @var{aclname} @var{match}
1476 Remove the specified match rule from the access control list.
1480 .name = "acl_reset",
1481 .args_type = "aclname:s",
1482 .params = "aclname",
1483 .help = "reset the access control list",
1484 .mhandler.cmd = do_acl_reset,
1488 @item acl_reset @var{aclname}
1490 Remove all matches from the access control list, and set the default
1491 policy back to @code{deny}.
1494 #if defined(TARGET_I386)
1498 .args_type = "cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1499 .params = "cpu bank status mcgstatus addr misc",
1500 .help = "inject a MCE on the given CPU",
1501 .mhandler.cmd = do_inject_mce,
1506 @item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
1508 Inject an MCE on the given CPU (x86 only).
1513 .args_type = "fdname:s",
1514 .params = "getfd name",
1515 .help = "receive a file descriptor via SCM rights and assign it a name",
1516 .user_print = monitor_user_noop,
1517 .mhandler.cmd_new = do_getfd,
1521 @item getfd @var{fdname}
1523 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1524 mechanism on unix sockets, it is stored using the name @var{fdname} for
1525 later use by other monitor commands.
1531 Receive a file descriptor via SCM rights and assign it a name.
1535 - "fdname": file descriptor name (json-string)
1539 -> { "execute": "getfd", "arguments": { "fdname": "fd1" } }
1546 .args_type = "fdname:s",
1547 .params = "closefd name",
1548 .help = "close a file descriptor previously passed via SCM rights",
1549 .user_print = monitor_user_noop,
1550 .mhandler.cmd_new = do_closefd,
1554 @item closefd @var{fdname}
1556 Close the file descriptor previously assigned to @var{fdname} using the
1557 @code{getfd} command. This is only needed if the file descriptor was never
1558 used by another monitor command.
1564 Close a file descriptor previously passed via SCM rights.
1568 - "fdname": file descriptor name (json-string)
1572 -> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
1578 .name = "block_passwd",
1579 .args_type = "device:B,password:s",
1580 .params = "block_passwd device password",
1581 .help = "set the password of encrypted block devices",
1582 .user_print = monitor_user_noop,
1583 .mhandler.cmd_new = do_block_set_passwd,
1587 @item block_passwd @var{device} @var{password}
1588 @findex block_passwd
1589 Set the encrypted device @var{device} password to @var{password}
1595 Set the password of encrypted block devices.
1599 - "device": device name (json-string)
1600 - "password": password (json-string)
1604 -> { "execute": "block_passwd", "arguments": { "device": "ide0-hd0",
1605 "password": "12345" } }
1611 .name = "qmp_capabilities",
1614 .help = "enable QMP capabilities",
1615 .user_print = monitor_user_noop,
1616 .mhandler.cmd_new = do_qmp_capabilities,
1620 @item qmp_capabilities
1621 @findex qmp_capabilities
1622 Enable the specified QMP capabilities
1628 Enable QMP capabilities.
1634 -> { "execute": "qmp_capabilities" }
1637 Note: This command must be issued before issuing any other command.
1642 HXCOMM Keep the 'info
' command at the end!
1643 HXCOMM This is required for the QMP documentation layout.
1654 .args_type = "item:s?",
1655 .params = "[subcommand]",
1656 .help = "show various information about the system state",
1657 .mhandler.cmd = do_info,
1661 @item info @var{subcommand}
1663 Show various information about the system state.
1667 show the version of QEMU
1675 Return a json-object with the following information:
1677 - "qemu": A json-object containing three integer values:
1678 - "major": QEMU's major
version (json
-int
)
1679 - "minor": QEMU
's minor version (json-int)
1680 - "micro": QEMU's micro
version (json
-int
)
1681 - "package": package's version (json-string)
1685 -> { "execute": "query-version" }
1701 list QMP available commands
1707 List QMP available commands.
1709 Each command is represented by a json-object, the returned value is a json-array
1712 Each json-object contain:
1714 - "name": command's
name (json
-string
)
1718 -> { "execute": "query-commands" }
1722 "name":"query-balloon"
1725 "name":"system_powerdown"
1730 Note
: This example has been shortened as the real response is too long
.
1736 show the various VLANs and the associated devices
1741 show the character devices
1747 Each device is represented by a json
-object
. The returned value is a json
-array
1750 Each json
-object contain the following
:
1752 - "label": device
's label (json-string)
1753 - "filename": device's
file (json
-string
)
1757 -> { "execute": "query-chardev" }
1775 show the block devices
1781 Show the block devices
.
1783 Each block device information is stored
in a json
-object and the returned value
1784 is a json
-array of all devices
.
1786 Each json
-object contain the following
:
1788 - "device": device
name (json
-string
)
1789 - "type": device
type (json
-string
)
1790 - Possible values
: "hd", "cdrom", "floppy", "unknown"
1791 - "removable": true if the device is removable
, false otherwise (json
-bool
)
1792 - "locked": true if the device is locked
, false otherwise (json
-bool
)
1793 - "inserted": only present
if the device is inserted
, it is a json
-object
1794 containing the following
:
1795 - "file": device file
name (json
-string
)
1796 - "ro": true if read
-only
, false otherwise (json
-bool
)
1797 - "drv": driver format
name (json
-string
)
1798 - Possible values
: "blkdebug", "bochs", "cloop", "cow", "dmg",
1799 "file", "file", "ftp", "ftps", "host_cdrom",
1800 "host_device", "host_floppy", "http", "https",
1801 "nbd", "parallels", "qcow", "qcow2", "raw",
1802 "tftp", "vdi", "vmdk", "vpc", "vvfat"
1803 - "backing_file": backing file
name (json
-string
, optional
)
1804 - "encrypted": true if encrypted
, false otherwise (json
-bool
)
1808 -> { "execute": "query-block" }
1812 "device":"ide0-hd0",
1819 "file":"disks/test.img"
1824 "device":"ide1-cd0",
1847 @item info blockstats
1848 show block device statistics
1854 Show block device statistics
.
1856 Each device statistic information is stored
in a json
-object and the returned
1857 value is a json
-array of all devices
.
1859 Each json
-object contain the following
:
1861 - "device": device
name (json
-string
)
1862 - "stats": A json
-object with the statistics information
, it contains
:
1863 - "rd_bytes": bytes
read (json
-int
)
1864 - "wr_bytes": bytes
written (json
-int
)
1865 - "rd_operations": read
operations (json
-int
)
1866 - "wr_operations": write
operations (json
-int
)
1867 - "wr_highest_offset": Highest offset of a sector written since the
1868 BlockDriverState has been
opened (json
-int
)
1869 - "parent": Contains recursively the statistics of the underlying
1870 protocol (e
.g
. the host file
for a qcow2 image
). If there is
1871 no underlying protocol
, this field is omitted
1872 (json
-object
, optional
)
1876 -> { "execute": "query-blockstats" }
1880 "device":"ide0-hd0",
1883 "wr_highest_offset":3686448128,
1885 "wr_operations":751,
1886 "rd_bytes":122567168,
1887 "rd_operations":36772
1891 "wr_highest_offset":2821110784,
1893 "wr_operations":692,
1894 "rd_bytes":122739200,
1895 "rd_operations":36604
1899 "device":"ide1-cd0",
1901 "wr_highest_offset":0,
1911 "wr_highest_offset":0,
1921 "wr_highest_offset":0,
1934 @item info registers
1935 show the cpu registers
1937 show infos
for each CPU
1943 Show CPU information
.
1945 Return a json
-array
. Each CPU is represented by a json
-object
, which contains
:
1947 - "CPU": CPU
index (json
-int
)
1948 - "current": true if this is the current CPU
, false otherwise (json
-bool
)
1949 - "halted": true if the cpu is halted
, false otherwise (json
-bool
)
1950 - Current program counter
. The key
's name depends on the architecture:
1951 "pc": i386/x86_64 (json-int)
1952 "nip": PPC (json-int)
1953 "pc" and "npc": sparc (json-int)
1954 "PC": mips (json-int)
1958 -> { "execute": "query-cpus" }
1980 show the command line history
1982 show the interrupts statistics (if available)
1984 show i8259 (PIC) state
1989 show emulated PCI device info
1995 PCI buses and devices information.
1997 The returned value is a json-array of all buses. Each bus is represented by
1998 a json-object, which has a key with a json-array of all PCI devices attached
1999 to it. Each device is represented by a json-object.
2001 The bus json-object contains the following:
2003 - "bus": bus number (json-int)
2004 - "devices": a json-array of json-objects, each json-object represents a
2007 The PCI device json-object contains the following:
2009 - "bus": identical to the parent's bus
number (json
-int
)
2010 - "slot": slot
number (json
-int
)
2011 - "function": function number (json
-int
)
2012 - "class_info": a json
-object containing
:
2013 - "desc": device
class description (json
-string
, optional
)
2014 - "class": device
class number (json
-int
)
2015 - "id": a json
-object containing
:
2016 - "device": device
ID (json
-int
)
2017 - "vendor": vendor
ID (json
-int
)
2018 - "irq": device
's IRQ if assigned (json-int, optional)
2019 - "qdev_id": qdev id string (json-string)
2020 - "pci_bridge": It's a json
-object
, only present
if this device is a
2021 PCI bridge
, contains
:
2022 - "bus": bus
number (json
-int
)
2023 - "secondary": secondary bus
number (json
-int
)
2024 - "subordinate": subordinate bus
number (json
-int
)
2025 - "io_range": I
/O memory range information
, a json
-object with the
2027 - "base": base address
, in bytes (json
-int
)
2028 - "limit": limit address
, in bytes (json
-int
)
2029 - "memory_range": memory range information
, a json
-object with the
2031 - "base": base address
, in bytes (json
-int
)
2032 - "limit": limit address
, in bytes (json
-int
)
2033 - "prefetchable_range": Prefetchable memory range information
, a
2034 json
-object with the following members
:
2035 - "base": base address
, in bytes (json
-int
)
2036 - "limit": limit address
, in bytes (json
-int
)
2037 - "devices": a json
-array of PCI devices
if there
's any attached, each
2038 each element is represented by a json-object, which contains
2039 the same members of the 'PCI device json
-object
' described
2041 - "regions": a json-array of json-objects, each json-object represents a
2042 memory region of this device
2044 The memory range json-object contains the following:
2046 - "base": base memory address (json-int)
2047 - "limit": limit value (json-int)
2049 The region json-object can be an I/O region or a memory region, an I/O region
2050 json-object contains the following:
2052 - "type": "io" (json-string, fixed)
2053 - "bar": BAR number (json-int)
2054 - "address": memory address (json-int)
2055 - "size": memory size (json-int)
2057 A memory region json-object contains the following:
2059 - "type": "memory" (json-string, fixed)
2060 - "bar": BAR number (json-int)
2061 - "address": memory address (json-int)
2062 - "size": memory size (json-int)
2063 - "mem_type_64": true or false (json-bool)
2064 - "prefetch": true or false (json-bool)
2068 -> { "execute": "query-pci" }
2080 "desc":"Host bridge"
2114 "desc":"IDE controller"
2136 "desc":"VGA controller"
2146 "mem_type_64":false,
2149 "address":4026531840,
2154 "mem_type_64":false,
2157 "address":4060086272,
2162 "mem_type_64":false,
2177 "desc":"RAM controller"
2198 Note: This example has been shortened as the real response is too long.
2204 show virtual to physical memory mappings (i386 only)
2206 show the active virtual memory mappings (i386 only)
2211 show dynamic compiler info
2213 show KVM information
2215 show NUMA information
2220 show KVM information
2226 Show KVM information.
2228 Return a json-object with the following information:
2230 - "enabled": true if KVM support is enabled, false otherwise (json-bool)
2231 - "present": true if QEMU has KVM support, false otherwise (json-bool)
2235 -> { "execute": "query-kvm" }
2236 <- { "return": { "enabled": true, "present": true } }
2242 show USB devices plugged on the virtual USB hub
2244 show all USB host devices
2246 show profiling information
2248 show information about active capturing
2249 @item info snapshots
2250 show list of VM snapshots
2255 show the current VM status (running|paused)
2261 Return a json-object with the following information:
2263 - "running": true if the VM is running, or false if it is paused (json-bool)
2264 - "singlestep": true if the VM is in single step mode,
2265 false otherwise (json-bool)
2269 -> { "execute": "query-status" }
2270 <- { "return": { "running": true, "singlestep": false } }
2276 show guest PCMCIA status
2281 show which guest mouse is receiving events
2287 Show VM mice information.
2289 Each mouse is represented by a json-object, the returned value is a json-array
2292 The mouse json-object contains the following:
2294 - "name": mouse's
name (json
-string
)
2295 - "index": mouse
's index (json-int)
2296 - "current": true if this mouse is receiving events, false otherwise (json-bool)
2297 - "absolute": true if the mouse generates absolute input events (json-bool)
2301 -> { "execute": "query-mice" }
2305 "name":"QEMU Microsoft Mouse",
2311 "name":"QEMU PS/2 Mouse",
2323 show the vnc server status
2329 Show VNC server information.
2331 Return a json-object with server information. Connected clients are returned
2332 as a json-array of json-objects.
2334 The main json-object contains the following:
2336 - "enabled": true or false (json-bool)
2337 - "host": server's IP
address (json
-string
)
2338 - "family": address
family (json
-string
)
2339 - Possible values
: "ipv4", "ipv6", "unix", "unknown"
2340 - "service": server
's port number (json-string)
2341 - "auth": authentication method (json-string)
2342 - Possible values: "invalid", "none", "ra2", "ra2ne", "sasl", "tight",
2343 "tls", "ultra", "unknown", "vencrypt", "vencrypt",
2344 "vencrypt+plain", "vencrypt+tls+none",
2345 "vencrypt+tls+plain", "vencrypt+tls+sasl",
2346 "vencrypt+tls+vnc", "vencrypt+x509+none",
2347 "vencrypt+x509+plain", "vencrypt+x509+sasl",
2348 "vencrypt+x509+vnc", "vnc"
2349 - "clients": a json-array of all connected clients
2351 Clients are described by a json-object, each one contain the following:
2353 - "host": client's IP
address (json
-string
)
2354 - "family": address
family (json
-string
)
2355 - Possible values
: "ipv4", "ipv6", "unix", "unknown"
2356 - "service": client
's port number (json-string)
2357 - "x509_dname": TLS dname (json-string, optional)
2358 - "sasl_username": SASL username (json-string, optional)
2362 -> { "execute": "query-vnc" }
2384 show the current VM name
2392 Return a json-object with the following information:
2394 - "name": VM's
name (json
-string
, optional
)
2398 -> { "execute": "query-name" }
2399 <- { "return": { "name": "qemu-name" } }
2405 show the current VM UUID
2413 Return a json
-object with the following information
:
2415 - "UUID": Universally Unique
Identifier (json
-string
)
2419 -> { "execute": "query-uuid" }
2420 <- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } }
2428 show user network stack connection states
2433 show migration status
2441 Return a json
-object
. If migration is active there will be another json
-object
2442 with RAM migration status and
if block migration is active another one with
2443 block migration status
.
2445 The main json
-object contains the following
:
2447 - "status": migration
status (json
-string
)
2448 - Possible values
: "active", "completed", "failed", "cancelled"
2449 - "ram": only present
if "status" is
"active", it is a json
-object with the
2450 following RAM
information (in bytes
):
2451 - "transferred": amount
transferred (json
-int
)
2452 - "remaining": amount
remaining (json
-int
)
2453 - "total": total (json
-int
)
2454 - "disk": only present
if "status" is
"active" and it is a block migration
,
2455 it is a json
-object with the following disk
information (in bytes
):
2456 - "transferred": amount
transferred (json
-int
)
2457 - "remaining": amount
remaining (json
-int
)
2458 - "total": total (json
-int
)
2462 1. Before the first migration
2464 -> { "execute": "query-migrate" }
2467 2. Migration is done and has succeeded
2469 -> { "execute": "query-migrate" }
2470 <- { "return": { "status": "completed" } }
2472 3. Migration is done and has failed
2474 -> { "execute": "query-migrate" }
2475 <- { "return": { "status": "failed" } }
2477 4. Migration is being performed and is not a block migration
:
2479 -> { "execute": "query-migrate" }
2491 5. Migration is being performed and is a block migration
:
2493 -> { "execute": "query-migrate" }
2499 "remaining":1053304,
2504 "remaining":20880384,
2514 show balloon information
2520 Show balloon information
.
2522 Make an asynchronous request
for balloon info
. When the request completes a
2523 json
-object will be returned containing the following data
:
2525 - "actual": current balloon value
in bytes (json
-int
)
2526 - "mem_swapped_in": Amount of memory swapped
in bytes (json
-int
, optional
)
2527 - "mem_swapped_out": Amount of memory swapped out
in bytes (json
-int
, optional
)
2528 - "major_page_faults": Number of major
faults (json
-int
, optional
)
2529 - "minor_page_faults": Number of minor
faults (json
-int
, optional
)
2530 - "free_mem": Total amount of free and unused memory
in
2531 bytes (json
-int
, optional
)
2532 - "total_mem": Total amount of available memory
in bytes (json
-int
, optional
)
2536 -> { "execute": "query-balloon" }
2539 "actual":1073741824,
2541 "mem_swapped_out":0,
2542 "major_page_faults":142,
2543 "minor_page_faults":239245,
2544 "free_mem":1014185984,
2545 "total_mem":1044668416
2555 show qdev device model list
2561 #ifdef CONFIG_SIMPLE_TRACE
2564 show contents of
trace buffer
2565 @item info
trace-events
2566 show available
trace events and their state
2570 HXCOMM DO NOT add
new commands after
'info', move your addition before it
!