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xemu/qemu-monitor.hx
Prerna Saxena 22890ab5e8 trace: Support for dynamically enabling/disabling trace events 
This patch adds support for dynamically enabling/disabling of trace events.
This is done by internally maintaining each trace event's state, and
permitting logging of data from a trace event only if it is in an
'active' state.

Monitor commands added :
1) info trace-events 		: to view all available trace events and
				  their state.
2) trace-event NAME on|off 	: to enable/disable data logging from a
				  given trace event.
				  Eg, trace-event paio_submit off
				  	disables logging of data when
					paio_submit is hit.

By default, all trace-events are disabled. One can enable desired trace-events
via the monitor.

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

trace: Monitor command 'info trace'

Monitor command 'info trace' to display contents of trace buffer

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

trace: Remove monitor.h dependency from simpletrace

User-mode targets don't have a monitor so the simple trace backend
currently does not build on those targets.  This patch abstracts the
monitor printing interface so there is no direct coupling between
simpletrace and the monitor.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2010-09-09 16:22:44 -05:00

2562 lines
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HXCOMM Use DEFHEADING() to define headings in both help text and texi
HXCOMM Text between STEXI and ETEXI are copied to texi version and
HXCOMM discarded from C version
HXCOMM Text between SQMP and EQMP is copied to the QMP documention file and
HXCOMM does not show up in the other formats.
HXCOMM DEF(command, args, callback, arg_string, help) is used to construct
HXCOMM monitor commands
HXCOMM HXCOMM can be used for comments, discarded from both texi and C
SQMP
QMP Supported Commands
----------------------
This document describes all commands currently supported by QMP.
Most of the time their usage is exactly the same as in the user Monitor, this
means that any other document which also describe commands (the manpage,
QEMU's manual, etc) can and should be consulted.
QMP has two types of commands: regular and query commands. Regular commands
usually change the Virtual Machine's state someway, while query commands just
return information. The sections below are divided accordingly.
It's important to observe that all communication examples are formatted in
a reader-friendly way, so that they're easier to understand. However, in real
protocol usage, they're emitted as a single line.
Also, the following notation is used to denote data flow:
-> data issued by the Client
<- Server data response
Please, refer to the QMP specification (QMP/qmp-spec.txt) for detailed
information on the Server command and response formats.
NOTE: This document is temporary and will be replaced soon.
1. Stability Considerations
===========================
The current QMP command set (described in this file) may be useful for a
number of use cases, however it's limited and several commands have bad
defined semantics, specially with regard to command completion.
These problems are going to be solved incrementally in the next QEMU releases
and we're going to establish a deprecation policy for badly defined commands.
If you're planning to adopt QMP, please observe the following:
1. The deprecation policy will take efect and be documented soon, please
check the documentation of each used command as soon as a new release of
QEMU is available
2. DO NOT rely on anything which is not explicit documented
3. Errors, in special, are not documented. Applications should NOT check
for specific errors classes or data (it's strongly recommended to only
check for the "error" key)
2. Regular Commands
===================
Server's responses in the examples below are always a success response, please
refer to the QMP specification for more details on error responses.
EQMP
STEXI
@table @option
ETEXI
{
.name = "help|?",
.args_type = "name:s?",
.params = "[cmd]",
.help = "show the help",
.mhandler.cmd = do_help_cmd,
},
STEXI
@item help or ? [@var{cmd}]
@findex help
Show the help for all commands or just for command @var{cmd}.
ETEXI
{
.name = "commit",
.args_type = "device:B",
.params = "device|all",
.help = "commit changes to the disk images (if -snapshot is used) or backing files",
.mhandler.cmd = do_commit,
},
STEXI
@item commit
@findex commit
Commit changes to the disk images (if -snapshot is used) or backing files.
ETEXI
{
.name = "q|quit",
.args_type = "",
.params = "",
.help = "quit the emulator",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_quit,
},
STEXI
@item q or quit
@findex quit
Quit the emulator.
ETEXI
SQMP
quit
----
Quit the emulator.
Arguments: None.
Example:
-> { "execute": "quit" }
<- { "return": {} }
EQMP
{
.name = "eject",
.args_type = "force:-f,device:B",
.params = "[-f] device",
.help = "eject a removable medium (use -f to force it)",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_eject,
},
STEXI
@item eject [-f] @var{device}
@findex eject
Eject a removable medium (use -f to force it).
ETEXI
SQMP
eject
-----
Eject a removable medium.
Arguments:
- force: force ejection (json-bool, optional)
- device: device name (json-string)
Example:
-> { "execute": "eject", "arguments": { "device": "ide1-cd0" } }
<- { "return": {} }
Note: The "force" argument defaults to false.
EQMP
{
.name = "change",
.args_type = "device:B,target:F,arg:s?",
.params = "device filename [format]",
.help = "change a removable medium, optional format",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_change,
},
STEXI
@item change @var{device} @var{setting}
@findex change
Change the configuration of a device.
@table @option
@item change @var{diskdevice} @var{filename} [@var{format}]
Change the medium for a removable disk device to point to @var{filename}. eg
@example
(qemu) change ide1-cd0 /path/to/some.iso
@end example
@var{format} is optional.
@item change vnc @var{display},@var{options}
Change the configuration of the VNC server. The valid syntax for @var{display}
and @var{options} are described at @ref{sec_invocation}. eg
@example
(qemu) change vnc localhost:1
@end example
@item change vnc password [@var{password}]
Change the password associated with the VNC server. If the new password is not
supplied, the monitor will prompt for it to be entered. VNC passwords are only
significant up to 8 letters. eg
@example
(qemu) change vnc password
Password: ********
@end example
@end table
ETEXI
SQMP
change
------
Change a removable medium or VNC configuration.
Arguments:
- "device": device name (json-string)
- "target": filename or item (json-string)
- "arg": additional argument (json-string, optional)
Examples:
1. Change a removable medium
-> { "execute": "change",
"arguments": { "device": "ide1-cd0",
"target": "/srv/images/Fedora-12-x86_64-DVD.iso" } }
<- { "return": {} }
2. Change VNC password
-> { "execute": "change",
"arguments": { "device": "vnc", "target": "password",
"arg": "foobar1" } }
<- { "return": {} }
EQMP
{
.name = "screendump",
.args_type = "filename:F",
.params = "filename",
.help = "save screen into PPM image 'filename'",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_screen_dump,
},
STEXI
@item screendump @var{filename}
@findex screendump
Save screen into PPM image @var{filename}.
ETEXI
SQMP
screendump
----------
Save screen into PPM image.
Arguments:
- "filename": file path (json-string)
Example:
-> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } }
<- { "return": {} }
EQMP
{
.name = "logfile",
.args_type = "filename:F",
.params = "filename",
.help = "output logs to 'filename'",
.mhandler.cmd = do_logfile,
},
STEXI
@item logfile @var{filename}
@findex logfile
Output logs to @var{filename}.
ETEXI
#ifdef CONFIG_SIMPLE_TRACE
{
.name = "trace-event",
.args_type = "name:s,option:b",
.params = "name on|off",
.help = "changes status of a specific trace event",
.mhandler.cmd = do_change_trace_event_state,
},
STEXI
@item trace-event
@findex trace-event
changes status of a trace event
ETEXI
#endif
{
.name = "log",
.args_type = "items:s",
.params = "item1[,...]",
.help = "activate logging of the specified items to '/tmp/qemu.log'",
.mhandler.cmd = do_log,
},
STEXI
@item log @var{item1}[,...]
@findex log
Activate logging of the specified items to @file{/tmp/qemu.log}.
ETEXI
{
.name = "savevm",
.args_type = "name:s?",
.params = "[tag|id]",
.help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
.mhandler.cmd = do_savevm,
},
STEXI
@item savevm [@var{tag}|@var{id}]
@findex savevm
Create a snapshot of the whole virtual machine. If @var{tag} is
provided, it is used as human readable identifier. If there is already
a snapshot with the same tag or ID, it is replaced. More info at
@ref{vm_snapshots}.
ETEXI
{
.name = "loadvm",
.args_type = "name:s",
.params = "tag|id",
.help = "restore a VM snapshot from its tag or id",
.mhandler.cmd = do_loadvm,
},
STEXI
@item loadvm @var{tag}|@var{id}
@findex loadvm
Set the whole virtual machine to the snapshot identified by the tag
@var{tag} or the unique snapshot ID @var{id}.
ETEXI
{
.name = "delvm",
.args_type = "name:s",
.params = "tag|id",
.help = "delete a VM snapshot from its tag or id",
.mhandler.cmd = do_delvm,
},
STEXI
@item delvm @var{tag}|@var{id}
@findex delvm
Delete the snapshot identified by @var{tag} or @var{id}.
ETEXI
{
.name = "singlestep",
.args_type = "option:s?",
.params = "[on|off]",
.help = "run emulation in singlestep mode or switch to normal mode",
.mhandler.cmd = do_singlestep,
},
STEXI
@item singlestep [off]
@findex singlestep
Run the emulation in single step mode.
If called with option off, the emulation returns to normal mode.
ETEXI
{
.name = "stop",
.args_type = "",
.params = "",
.help = "stop emulation",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_stop,
},
STEXI
@item stop
@findex stop
Stop emulation.
ETEXI
SQMP
stop
----
Stop the emulator.
Arguments: None.
Example:
-> { "execute": "stop" }
<- { "return": {} }
EQMP
{
.name = "c|cont",
.args_type = "",
.params = "",
.help = "resume emulation",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_cont,
},
STEXI
@item c or cont
@findex cont
Resume emulation.
ETEXI
SQMP
cont
----
Resume emulation.
Arguments: None.
Example:
-> { "execute": "cont" }
<- { "return": {} }
EQMP
{
.name = "gdbserver",
.args_type = "device:s?",
.params = "[device]",
.help = "start gdbserver on given device (default 'tcp::1234'), stop with 'none'",
.mhandler.cmd = do_gdbserver,
},
STEXI
@item gdbserver [@var{port}]
@findex gdbserver
Start gdbserver session (default @var{port}=1234)
ETEXI
{
.name = "x",
.args_type = "fmt:/,addr:l",
.params = "/fmt addr",
.help = "virtual memory dump starting at 'addr'",
.mhandler.cmd = do_memory_dump,
},
STEXI
@item x/fmt @var{addr}
@findex x
Virtual memory dump starting at @var{addr}.
ETEXI
{
.name = "xp",
.args_type = "fmt:/,addr:l",
.params = "/fmt addr",
.help = "physical memory dump starting at 'addr'",
.mhandler.cmd = do_physical_memory_dump,
},
STEXI
@item xp /@var{fmt} @var{addr}
@findex xp
Physical memory dump starting at @var{addr}.
@var{fmt} is a format which tells the command how to format the
data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
@table @var
@item count
is the number of items to be dumped.
@item format
can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
c (char) or i (asm instruction).
@item size
can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
@code{h} or @code{w} can be specified with the @code{i} format to
respectively select 16 or 32 bit code instruction size.
@end table
Examples:
@itemize
@item
Dump 10 instructions at the current instruction pointer:
@example
(qemu) x/10i $eip
0x90107063: ret
0x90107064: sti
0x90107065: lea 0x0(%esi,1),%esi
0x90107069: lea 0x0(%edi,1),%edi
0x90107070: ret
0x90107071: jmp 0x90107080
0x90107073: nop
0x90107074: nop
0x90107075: nop
0x90107076: nop
@end example
@item
Dump 80 16 bit values at the start of the video memory.
@smallexample
(qemu) xp/80hx 0xb8000
0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
@end smallexample
@end itemize
ETEXI
{
.name = "p|print",
.args_type = "fmt:/,val:l",
.params = "/fmt expr",
.help = "print expression value (use $reg for CPU register access)",
.mhandler.cmd = do_print,
},
STEXI
@item p or print/@var{fmt} @var{expr}
@findex print
Print expression value. Only the @var{format} part of @var{fmt} is
used.
ETEXI
{
.name = "i",
.args_type = "fmt:/,addr:i,index:i.",
.params = "/fmt addr",
.help = "I/O port read",
.mhandler.cmd = do_ioport_read,
},
STEXI
Read I/O port.
ETEXI
{
.name = "o",
.args_type = "fmt:/,addr:i,val:i",
.params = "/fmt addr value",
.help = "I/O port write",
.mhandler.cmd = do_ioport_write,
},
STEXI
Write to I/O port.
ETEXI
{
.name = "sendkey",
.args_type = "string:s,hold_time:i?",
.params = "keys [hold_ms]",
.help = "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)",
.mhandler.cmd = do_sendkey,
},
STEXI
@item sendkey @var{keys}
@findex sendkey
Send @var{keys} to the emulator. @var{keys} could be the name of the
key or @code{#} followed by the raw value in either decimal or hexadecimal
format. Use @code{-} to press several keys simultaneously. Example:
@example
sendkey ctrl-alt-f1
@end example
This command is useful to send keys that your graphical user interface
intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
ETEXI
{
.name = "system_reset",
.args_type = "",
.params = "",
.help = "reset the system",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_system_reset,
},
STEXI
@item system_reset
@findex system_reset
Reset the system.
ETEXI
SQMP
system_reset
------------
Reset the system.
Arguments: None.
Example:
-> { "execute": "system_reset" }
<- { "return": {} }
EQMP
{
.name = "system_powerdown",
.args_type = "",
.params = "",
.help = "send system power down event",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_system_powerdown,
},
STEXI
@item system_powerdown
@findex system_powerdown
Power down the system (if supported).
ETEXI
SQMP
system_powerdown
----------------
Send system power down event.
Arguments: None.
Example:
-> { "execute": "system_powerdown" }
<- { "return": {} }
EQMP
{
.name = "sum",
.args_type = "start:i,size:i",
.params = "addr size",
.help = "compute the checksum of a memory region",
.mhandler.cmd = do_sum,
},
STEXI
@item sum @var{addr} @var{size}
@findex sum
Compute the checksum of a memory region.
ETEXI
{
.name = "usb_add",
.args_type = "devname:s",
.params = "device",
.help = "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')",
.mhandler.cmd = do_usb_add,
},
STEXI
@item usb_add @var{devname}
@findex usb_add
Add the USB device @var{devname}. For details of available devices see
@ref{usb_devices}
ETEXI
{
.name = "usb_del",
.args_type = "devname:s",
.params = "device",
.help = "remove USB device 'bus.addr'",
.mhandler.cmd = do_usb_del,
},
STEXI
@item usb_del @var{devname}
@findex usb_del
Remove the USB device @var{devname} from the QEMU virtual USB
hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
command @code{info usb} to see the devices you can remove.
ETEXI
{
.name = "device_add",
.args_type = "device:O",
.params = "driver[,prop=value][,...]",
.help = "add device, like -device on the command line",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_device_add,
},
STEXI
@item device_add @var{config}
@findex device_add
Add device.
ETEXI
SQMP
device_add
----------
Add a device.
Arguments:
- "driver": the name of the new device's driver (json-string)
- "bus": the device's parent bus (device tree path, json-string, optional)
- "id": the device's ID, must be unique (json-string)
- device properties
Example:
-> { "execute": "device_add", "arguments": { "driver": "e1000", "id": "net1" } }
<- { "return": {} }
Notes:
(1) For detailed information about this command, please refer to the
'docs/qdev-device-use.txt' file.
(2) It's possible to list device properties by running QEMU with the
"-device DEVICE,\?" command-line argument, where DEVICE is the device's name
EQMP
{
.name = "device_del",
.args_type = "id:s",
.params = "device",
.help = "remove device",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_device_del,
},
STEXI
@item device_del @var{id}
@findex device_del
Remove device @var{id}.
ETEXI
SQMP
device_del
----------
Remove a device.
Arguments:
- "id": the device's ID (json-string)
Example:
-> { "execute": "device_del", "arguments": { "id": "net1" } }
<- { "return": {} }
EQMP
{
.name = "cpu",
.args_type = "index:i",
.params = "index",
.help = "set the default CPU",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_cpu_set,
},
STEXI
@item cpu @var{index}
@findex cpu
Set the default CPU.
ETEXI
SQMP
cpu
---
Set the default CPU.
Arguments:
- "index": the CPU's index (json-int)
Example:
-> { "execute": "cpu", "arguments": { "index": 0 } }
<- { "return": {} }
Note: CPUs' indexes are obtained with the 'query-cpus' command.
EQMP
{
.name = "mouse_move",
.args_type = "dx_str:s,dy_str:s,dz_str:s?",
.params = "dx dy [dz]",
.help = "send mouse move events",
.mhandler.cmd = do_mouse_move,
},
STEXI
@item mouse_move @var{dx} @var{dy} [@var{dz}]
@findex mouse_move
Move the active mouse to the specified coordinates @var{dx} @var{dy}
with optional scroll axis @var{dz}.
ETEXI
{
.name = "mouse_button",
.args_type = "button_state:i",
.params = "state",
.help = "change mouse button state (1=L, 2=M, 4=R)",
.mhandler.cmd = do_mouse_button,
},
STEXI
@item mouse_button @var{val}
@findex mouse_button
Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
ETEXI
{
.name = "mouse_set",
.args_type = "index:i",
.params = "index",
.help = "set which mouse device receives events",
.mhandler.cmd = do_mouse_set,
},
STEXI
@item mouse_set @var{index}
@findex mouse_set
Set which mouse device receives events at given @var{index}, index
can be obtained with
@example
info mice
@end example
ETEXI
#ifdef HAS_AUDIO
{
.name = "wavcapture",
.args_type = "path:F,freq:i?,bits:i?,nchannels:i?",
.params = "path [frequency [bits [channels]]]",
.help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
.mhandler.cmd = do_wav_capture,
},
#endif
STEXI
@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
@findex wavcapture
Capture audio into @var{filename}. Using sample rate @var{frequency}
bits per sample @var{bits} and number of channels @var{channels}.
Defaults:
@itemize @minus
@item Sample rate = 44100 Hz - CD quality
@item Bits = 16
@item Number of channels = 2 - Stereo
@end itemize
ETEXI
#ifdef HAS_AUDIO
{
.name = "stopcapture",
.args_type = "n:i",
.params = "capture index",
.help = "stop capture",
.mhandler.cmd = do_stop_capture,
},
#endif
STEXI
@item stopcapture @var{index}
@findex stopcapture
Stop capture with a given @var{index}, index can be obtained with
@example
info capture
@end example
ETEXI
{
.name = "memsave",
.args_type = "val:l,size:i,filename:s",
.params = "addr size file",
.help = "save to disk virtual memory dump starting at 'addr' of size 'size'",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_memory_save,
},
STEXI
@item memsave @var{addr} @var{size} @var{file}
@findex memsave
save to disk virtual memory dump starting at @var{addr} of size @var{size}.
ETEXI
SQMP
memsave
-------
Save to disk virtual memory dump starting at 'val' of size 'size'.
Arguments:
- "val": the starting address (json-int)
- "size": the memory size, in bytes (json-int)
- "filename": file path (json-string)
Example:
-> { "execute": "memsave",
"arguments": { "val": 10,
"size": 100,
"filename": "/tmp/virtual-mem-dump" } }
<- { "return": {} }
Note: Depends on the current CPU.
EQMP
{
.name = "pmemsave",
.args_type = "val:l,size:i,filename:s",
.params = "addr size file",
.help = "save to disk physical memory dump starting at 'addr' of size 'size'",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_physical_memory_save,
},
STEXI
@item pmemsave @var{addr} @var{size} @var{file}
@findex pmemsave
save to disk physical memory dump starting at @var{addr} of size @var{size}.
ETEXI
SQMP
pmemsave
--------
Save to disk physical memory dump starting at 'val' of size 'size'.
Arguments:
- "val": the starting address (json-int)
- "size": the memory size, in bytes (json-int)
- "filename": file path (json-string)
Example:
-> { "execute": "pmemsave",
"arguments": { "val": 10,
"size": 100,
"filename": "/tmp/physical-mem-dump" } }
<- { "return": {} }
EQMP
{
.name = "boot_set",
.args_type = "bootdevice:s",
.params = "bootdevice",
.help = "define new values for the boot device list",
.mhandler.cmd = do_boot_set,
},
STEXI
@item boot_set @var{bootdevicelist}
@findex boot_set
Define new values for the boot device list. Those values will override
the values specified on the command line through the @code{-boot} option.
The values that can be specified here depend on the machine type, but are
the same that can be specified in the @code{-boot} command line option.
ETEXI
#if defined(TARGET_I386)
{
.name = "nmi",
.args_type = "cpu_index:i",
.params = "cpu",
.help = "inject an NMI on the given CPU",
.mhandler.cmd = do_inject_nmi,
},
#endif
STEXI
@item nmi @var{cpu}
@findex nmi
Inject an NMI on the given CPU (x86 only).
ETEXI
{
.name = "migrate",
.args_type = "detach:-d,blk:-b,inc:-i,uri:s",
.params = "[-d] [-b] [-i] uri",
.help = "migrate to URI (using -d to not wait for completion)"
"\n\t\t\t -b for migration without shared storage with"
" full copy of disk\n\t\t\t -i for migration without "
"shared storage with incremental copy of disk "
"(base image shared between src and destination)",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_migrate,
},
STEXI
@item migrate [-d] [-b] [-i] @var{uri}
@findex migrate
Migrate to @var{uri} (using -d to not wait for completion).
-b for migration with full copy of disk
-i for migration with incremental copy of disk (base image is shared)
ETEXI
SQMP
migrate
-------
Migrate to URI.
Arguments:
- "blk": block migration, full disk copy (json-bool, optional)
- "inc": incremental disk copy (json-bool, optional)
- "uri": Destination URI (json-string)
Example:
-> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } }
<- { "return": {} }
Notes:
(1) The 'query-migrate' command should be used to check migration's progress
and final result (this information is provided by the 'status' member)
(2) All boolean arguments default to false
(3) The user Monitor's "detach" argument is invalid in QMP and should not
be used
EQMP
{
.name = "migrate_cancel",
.args_type = "",
.params = "",
.help = "cancel the current VM migration",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_migrate_cancel,
},
STEXI
@item migrate_cancel
@findex migrate_cancel
Cancel the current VM migration.
ETEXI
SQMP
migrate_cancel
--------------
Cancel the current migration.
Arguments: None.
Example:
-> { "execute": "migrate_cancel" }
<- { "return": {} }
EQMP
{
.name = "migrate_set_speed",
.args_type = "value:f",
.params = "value",
.help = "set maximum speed (in bytes) for migrations",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_migrate_set_speed,
},
STEXI
@item migrate_set_speed @var{value}
@findex migrate_set_speed
Set maximum speed to @var{value} (in bytes) for migrations.
ETEXI
SQMP
migrate_set_speed
-----------------
Set maximum speed for migrations.
Arguments:
- "value": maximum speed, in bytes per second (json-number)
Example:
-> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } }
<- { "return": {} }
EQMP
{
.name = "migrate_set_downtime",
.args_type = "value:T",
.params = "value",
.help = "set maximum tolerated downtime (in seconds) for migrations",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_migrate_set_downtime,
},
STEXI
@item migrate_set_downtime @var{second}
@findex migrate_set_downtime
Set maximum tolerated downtime (in seconds) for migration.
ETEXI
SQMP
migrate_set_downtime
--------------------
Set maximum tolerated downtime (in seconds) for migrations.
Arguments:
- "value": maximum downtime (json-number)
Example:
-> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } }
<- { "return": {} }
EQMP
#if defined(TARGET_I386)
{
.name = "drive_add",
.args_type = "pci_addr:s,opts:s",
.params = "[[<domain>:]<bus>:]<slot>\n"
"[file=file][,if=type][,bus=n]\n"
"[,unit=m][,media=d][index=i]\n"
"[,cyls=c,heads=h,secs=s[,trans=t]]\n"
"[snapshot=on|off][,cache=on|off]",
.help = "add drive to PCI storage controller",
.mhandler.cmd = drive_hot_add,
},
#endif
STEXI
@item drive_add
@findex drive_add
Add drive to PCI storage controller.
ETEXI
#if defined(TARGET_I386)
{
.name = "pci_add",
.args_type = "pci_addr:s,type:s,opts:s?",
.params = "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...",
.help = "hot-add PCI device",
.mhandler.cmd = pci_device_hot_add,
},
#endif
STEXI
@item pci_add
@findex pci_add
Hot-add PCI device.
ETEXI
#if defined(TARGET_I386)
{
.name = "pci_del",
.args_type = "pci_addr:s",
.params = "[[<domain>:]<bus>:]<slot>",
.help = "hot remove PCI device",
.mhandler.cmd = do_pci_device_hot_remove,
},
#endif
STEXI
@item pci_del
@findex pci_del
Hot remove PCI device.
ETEXI
{
.name = "host_net_add",
.args_type = "device:s,opts:s?",
.params = "tap|user|socket|vde|dump [options]",
.help = "add host VLAN client",
.mhandler.cmd = net_host_device_add,
},
STEXI
@item host_net_add
@findex host_net_add
Add host VLAN client.
ETEXI
{
.name = "host_net_remove",
.args_type = "vlan_id:i,device:s",
.params = "vlan_id name",
.help = "remove host VLAN client",
.mhandler.cmd = net_host_device_remove,
},
STEXI
@item host_net_remove
@findex host_net_remove
Remove host VLAN client.
ETEXI
{
.name = "netdev_add",
.args_type = "netdev:O",
.params = "[user|tap|socket],id=str[,prop=value][,...]",
.help = "add host network device",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_netdev_add,
},
STEXI
@item netdev_add
@findex netdev_add
Add host network device.
ETEXI
SQMP
netdev_add
----------
Add host network device.
Arguments:
- "type": the device type, "tap", "user", ... (json-string)
- "id": the device's ID, must be unique (json-string)
- device options
Example:
-> { "execute": "netdev_add", "arguments": { "type": "user", "id": "netdev1" } }
<- { "return": {} }
Note: The supported device options are the same ones supported by the '-net'
command-line argument, which are listed in the '-help' output or QEMU's
manual
EQMP
{
.name = "netdev_del",
.args_type = "id:s",
.params = "id",
.help = "remove host network device",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_netdev_del,
},
STEXI
@item netdev_del
@findex netdev_del
Remove host network device.
ETEXI
SQMP
netdev_del
----------
Remove host network device.
Arguments:
- "id": the device's ID, must be unique (json-string)
Example:
-> { "execute": "netdev_del", "arguments": { "id": "netdev1" } }
<- { "return": {} }
EQMP
#ifdef CONFIG_SLIRP
{
.name = "hostfwd_add",
.args_type = "arg1:s,arg2:s?,arg3:s?",
.params = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
.help = "redirect TCP or UDP connections from host to guest (requires -net user)",
.mhandler.cmd = net_slirp_hostfwd_add,
},
#endif
STEXI
@item hostfwd_add
@findex hostfwd_add
Redirect TCP or UDP connections from host to guest (requires -net user).
ETEXI
#ifdef CONFIG_SLIRP
{
.name = "hostfwd_remove",
.args_type = "arg1:s,arg2:s?,arg3:s?",
.params = "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
.help = "remove host-to-guest TCP or UDP redirection",
.mhandler.cmd = net_slirp_hostfwd_remove,
},
#endif
STEXI
@item hostfwd_remove
@findex hostfwd_remove
Remove host-to-guest TCP or UDP redirection.
ETEXI
{
.name = "balloon",
.args_type = "value:M",
.params = "target",
.help = "request VM to change its memory allocation (in MB)",
.user_print = monitor_user_noop,
.mhandler.cmd_async = do_balloon,
.flags = MONITOR_CMD_ASYNC,
},
STEXI
@item balloon @var{value}
@findex balloon
Request VM to change its memory allocation to @var{value} (in MB).
ETEXI
SQMP
balloon
-------
Request VM to change its memory allocation (in bytes).
Arguments:
- "value": New memory allocation (json-int)
Example:
-> { "execute": "balloon", "arguments": { "value": 536870912 } }
<- { "return": {} }
EQMP
{
.name = "set_link",
.args_type = "name:s,up:b",
.params = "name on|off",
.help = "change the link status of a network adapter",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_set_link,
},
STEXI
@item set_link @var{name} [on|off]
@findex set_link
Switch link @var{name} on (i.e. up) or off (i.e. down).
ETEXI
SQMP
set_link
--------
Change the link status of a network adapter.
Arguments:
- "name": network device name (json-string)
- "up": status is up (json-bool)
Example:
-> { "execute": "set_link", "arguments": { "name": "e1000.0", "up": false } }
<- { "return": {} }
EQMP
{
.name = "watchdog_action",
.args_type = "action:s",
.params = "[reset|shutdown|poweroff|pause|debug|none]",
.help = "change watchdog action",
.mhandler.cmd = do_watchdog_action,
},
STEXI
@item watchdog_action
@findex watchdog_action
Change watchdog action.
ETEXI
{
.name = "acl_show",
.args_type = "aclname:s",
.params = "aclname",
.help = "list rules in the access control list",
.mhandler.cmd = do_acl_show,
},
STEXI
@item acl_show @var{aclname}
@findex acl_show
List all the matching rules in the access control list, and the default
policy. There are currently two named access control lists,
@var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
certificate distinguished name, and SASL username respectively.
ETEXI
{
.name = "acl_policy",
.args_type = "aclname:s,policy:s",
.params = "aclname allow|deny",
.help = "set default access control list policy",
.mhandler.cmd = do_acl_policy,
},
STEXI
@item acl_policy @var{aclname} @code{allow|deny}
@findex acl_policy
Set the default access control list policy, used in the event that
none of the explicit rules match. The default policy at startup is
always @code{deny}.
ETEXI
{
.name = "acl_add",
.args_type = "aclname:s,match:s,policy:s,index:i?",
.params = "aclname match allow|deny [index]",
.help = "add a match rule to the access control list",
.mhandler.cmd = do_acl_add,
},
STEXI
@item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
@findex acl_add
Add a match rule to the access control list, allowing or denying access.
The match will normally be an exact username or x509 distinguished name,
but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
normally be appended to the end of the ACL, but can be inserted
earlier in the list if the optional @var{index} parameter is supplied.
ETEXI
{
.name = "acl_remove",
.args_type = "aclname:s,match:s",
.params = "aclname match",
.help = "remove a match rule from the access control list",
.mhandler.cmd = do_acl_remove,
},
STEXI
@item acl_remove @var{aclname} @var{match}
@findex acl_remove
Remove the specified match rule from the access control list.
ETEXI
{
.name = "acl_reset",
.args_type = "aclname:s",
.params = "aclname",
.help = "reset the access control list",
.mhandler.cmd = do_acl_reset,
},
STEXI
@item acl_reset @var{aclname}
@findex acl_reset
Remove all matches from the access control list, and set the default
policy back to @code{deny}.
ETEXI
#if defined(TARGET_I386)
{
.name = "mce",
.args_type = "cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
.params = "cpu bank status mcgstatus addr misc",
.help = "inject a MCE on the given CPU",
.mhandler.cmd = do_inject_mce,
},
#endif
STEXI
@item mce @var{cpu} @var{bank} @var{status} @var{mcgstatus} @var{addr} @var{misc}
@findex mce (x86)
Inject an MCE on the given CPU (x86 only).
ETEXI
{
.name = "getfd",
.args_type = "fdname:s",
.params = "getfd name",
.help = "receive a file descriptor via SCM rights and assign it a name",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_getfd,
},
STEXI
@item getfd @var{fdname}
@findex getfd
If a file descriptor is passed alongside this command using the SCM_RIGHTS
mechanism on unix sockets, it is stored using the name @var{fdname} for
later use by other monitor commands.
ETEXI
SQMP
getfd
-----
Receive a file descriptor via SCM rights and assign it a name.
Arguments:
- "fdname": file descriptor name (json-string)
Example:
-> { "execute": "getfd", "arguments": { "fdname": "fd1" } }
<- { "return": {} }
EQMP
{
.name = "closefd",
.args_type = "fdname:s",
.params = "closefd name",
.help = "close a file descriptor previously passed via SCM rights",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_closefd,
},
STEXI
@item closefd @var{fdname}
@findex closefd
Close the file descriptor previously assigned to @var{fdname} using the
@code{getfd} command. This is only needed if the file descriptor was never
used by another monitor command.
ETEXI
SQMP
closefd
-------
Close a file descriptor previously passed via SCM rights.
Arguments:
- "fdname": file descriptor name (json-string)
Example:
-> { "execute": "closefd", "arguments": { "fdname": "fd1" } }
<- { "return": {} }
EQMP
{
.name = "block_passwd",
.args_type = "device:B,password:s",
.params = "block_passwd device password",
.help = "set the password of encrypted block devices",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_block_set_passwd,
},
STEXI
@item block_passwd @var{device} @var{password}
@findex block_passwd
Set the encrypted device @var{device} password to @var{password}
ETEXI
SQMP
block_passwd
------------
Set the password of encrypted block devices.
Arguments:
- "device": device name (json-string)
- "password": password (json-string)
Example:
-> { "execute": "block_passwd", "arguments": { "device": "ide0-hd0",
"password": "12345" } }
<- { "return": {} }
EQMP
{
.name = "qmp_capabilities",
.args_type = "",
.params = "",
.help = "enable QMP capabilities",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_qmp_capabilities,
},
STEXI
@item qmp_capabilities
@findex qmp_capabilities
Enable the specified QMP capabilities
ETEXI
SQMP
qmp_capabilities
----------------
Enable QMP capabilities.
Arguments: None.
Example:
-> { "execute": "qmp_capabilities" }
<- { "return": {} }
Note: This command must be issued before issuing any other command.
EQMP
HXCOMM Keep the 'info' command at the end!
HXCOMM This is required for the QMP documentation layout.
SQMP
3. Query Commands
=================
EQMP
{
.name = "info",
.args_type = "item:s?",
.params = "[subcommand]",
.help = "show various information about the system state",
.user_print = monitor_user_noop,
.mhandler.cmd_new = do_info,
},
STEXI
@item info @var{subcommand}
@findex info
Show various information about the system state.
@table @option
@item info version
show the version of QEMU
ETEXI
SQMP
query-version
-------------
Show QEMU version.
Return a json-object with the following information:
- "qemu": A json-object containing three integer values:
- "major": QEMU's major version (json-int)
- "minor": QEMU's minor version (json-int)
- "micro": QEMU's micro version (json-int)
- "package": package's version (json-string)
Example:
-> { "execute": "query-version" }
<- {
"return":{
"qemu":{
"major":0,
"minor":11,
"micro":5
},
"package":""
}
}
EQMP
STEXI
@item info commands
list QMP available commands
ETEXI
SQMP
query-commands
--------------
List QMP available commands.
Each command is represented by a json-object, the returned value is a json-array
of all commands.
Each json-object contain:
- "name": command's name (json-string)
Example:
-> { "execute": "query-commands" }
<- {
"return":[
{
"name":"query-balloon"
},
{
"name":"system_powerdown"
}
]
}
Note: This example has been shortened as the real response is too long.
EQMP
STEXI
@item info network
show the various VLANs and the associated devices
ETEXI
STEXI
@item info chardev
show the character devices
ETEXI
SQMP
query-chardev
-------------
Each device is represented by a json-object. The returned value is a json-array
of all devices.
Each json-object contain the following:
- "label": device's label (json-string)
- "filename": device's file (json-string)
Example:
-> { "execute": "query-chardev" }
<- {
"return":[
{
"label":"monitor",
"filename":"stdio"
},
{
"label":"serial0",
"filename":"vc"
}
]
}
EQMP
STEXI
@item info block
show the block devices
ETEXI
SQMP
query-block
-----------
Show the block devices.
Each block device information is stored in a json-object and the returned value
is a json-array of all devices.
Each json-object contain the following:
- "device": device name (json-string)
- "type": device type (json-string)
- Possible values: "hd", "cdrom", "floppy", "unknown"
- "removable": true if the device is removable, false otherwise (json-bool)
- "locked": true if the device is locked, false otherwise (json-bool)
- "inserted": only present if the device is inserted, it is a json-object
containing the following:
- "file": device file name (json-string)
- "ro": true if read-only, false otherwise (json-bool)
- "drv": driver format name (json-string)
- Possible values: "blkdebug", "bochs", "cloop", "cow", "dmg",
"file", "file", "ftp", "ftps", "host_cdrom",
"host_device", "host_floppy", "http", "https",
"nbd", "parallels", "qcow", "qcow2", "raw",
"tftp", "vdi", "vmdk", "vpc", "vvfat"
- "backing_file": backing file name (json-string, optional)
- "encrypted": true if encrypted, false otherwise (json-bool)
Example:
-> { "execute": "query-block" }
<- {
"return":[
{
"device":"ide0-hd0",
"locked":false,
"removable":false,
"inserted":{
"ro":false,
"drv":"qcow2",
"encrypted":false,
"file":"disks/test.img"
},
"type":"hd"
},
{
"device":"ide1-cd0",
"locked":false,
"removable":true,
"type":"cdrom"
},
{
"device":"floppy0",
"locked":false,
"removable":true,
"type": "floppy"
},
{
"device":"sd0",
"locked":false,
"removable":true,
"type":"floppy"
}
]
}
EQMP
STEXI
@item info blockstats
show block device statistics
ETEXI
SQMP
query-blockstats
----------------
Show block device statistics.
Each device statistic information is stored in a json-object and the returned
value is a json-array of all devices.
Each json-object contain the following:
- "device": device name (json-string)
- "stats": A json-object with the statistics information, it contains:
- "rd_bytes": bytes read (json-int)
- "wr_bytes": bytes written (json-int)
- "rd_operations": read operations (json-int)
- "wr_operations": write operations (json-int)
- "wr_highest_offset": Highest offset of a sector written since the
BlockDriverState has been opened (json-int)
- "parent": Contains recursively the statistics of the underlying
protocol (e.g. the host file for a qcow2 image). If there is
no underlying protocol, this field is omitted
(json-object, optional)
Example:
-> { "execute": "query-blockstats" }
<- {
"return":[
{
"device":"ide0-hd0",
"parent":{
"stats":{
"wr_highest_offset":3686448128,
"wr_bytes":9786368,
"wr_operations":751,
"rd_bytes":122567168,
"rd_operations":36772
}
},
"stats":{
"wr_highest_offset":2821110784,
"wr_bytes":9786368,
"wr_operations":692,
"rd_bytes":122739200,
"rd_operations":36604
}
},
{
"device":"ide1-cd0",
"stats":{
"wr_highest_offset":0,
"wr_bytes":0,
"wr_operations":0,
"rd_bytes":0,
"rd_operations":0
}
},
{
"device":"floppy0",
"stats":{
"wr_highest_offset":0,
"wr_bytes":0,
"wr_operations":0,
"rd_bytes":0,
"rd_operations":0
}
},
{
"device":"sd0",
"stats":{
"wr_highest_offset":0,
"wr_bytes":0,
"wr_operations":0,
"rd_bytes":0,
"rd_operations":0
}
}
]
}
EQMP
STEXI
@item info registers
show the cpu registers
@item info cpus
show infos for each CPU
ETEXI
SQMP
query-cpus
----------
Show CPU information.
Return a json-array. Each CPU is represented by a json-object, which contains:
- "CPU": CPU index (json-int)
- "current": true if this is the current CPU, false otherwise (json-bool)
- "halted": true if the cpu is halted, false otherwise (json-bool)
- Current program counter. The key's name depends on the architecture:
"pc": i386/x86_64 (json-int)
"nip": PPC (json-int)
"pc" and "npc": sparc (json-int)
"PC": mips (json-int)
Example:
-> { "execute": "query-cpus" }
<- {
"return":[
{
"CPU":0,
"current":true,
"halted":false,
"pc":3227107138
},
{
"CPU":1,
"current":false,
"halted":true,
"pc":7108165
}
]
}
EQMP
STEXI
@item info history
show the command line history
@item info irq
show the interrupts statistics (if available)
@item info pic
show i8259 (PIC) state
ETEXI
STEXI
@item info pci
show emulated PCI device info
ETEXI
SQMP
query-pci
---------
PCI buses and devices information.
The returned value is a json-array of all buses. Each bus is represented by
a json-object, which has a key with a json-array of all PCI devices attached
to it. Each device is represented by a json-object.
The bus json-object contains the following:
- "bus": bus number (json-int)
- "devices": a json-array of json-objects, each json-object represents a
PCI device
The PCI device json-object contains the following:
- "bus": identical to the parent's bus number (json-int)
- "slot": slot number (json-int)
- "function": function number (json-int)
- "class_info": a json-object containing:
- "desc": device class description (json-string, optional)
- "class": device class number (json-int)
- "id": a json-object containing:
- "device": device ID (json-int)
- "vendor": vendor ID (json-int)
- "irq": device's IRQ if assigned (json-int, optional)
- "qdev_id": qdev id string (json-string)
- "pci_bridge": It's a json-object, only present if this device is a
PCI bridge, contains:
- "bus": bus number (json-int)
- "secondary": secondary bus number (json-int)
- "subordinate": subordinate bus number (json-int)
- "io_range": I/O memory range information, a json-object with the
following members:
- "base": base address, in bytes (json-int)
- "limit": limit address, in bytes (json-int)
- "memory_range": memory range information, a json-object with the
following members:
- "base": base address, in bytes (json-int)
- "limit": limit address, in bytes (json-int)
- "prefetchable_range": Prefetchable memory range information, a
json-object with the following members:
- "base": base address, in bytes (json-int)
- "limit": limit address, in bytes (json-int)
- "devices": a json-array of PCI devices if there's any attached, each
each element is represented by a json-object, which contains
the same members of the 'PCI device json-object' described
above (optional)
- "regions": a json-array of json-objects, each json-object represents a
memory region of this device
The memory range json-object contains the following:
- "base": base memory address (json-int)
- "limit": limit value (json-int)
The region json-object can be an I/O region or a memory region, an I/O region
json-object contains the following:
- "type": "io" (json-string, fixed)
- "bar": BAR number (json-int)
- "address": memory address (json-int)
- "size": memory size (json-int)
A memory region json-object contains the following:
- "type": "memory" (json-string, fixed)
- "bar": BAR number (json-int)
- "address": memory address (json-int)
- "size": memory size (json-int)
- "mem_type_64": true or false (json-bool)
- "prefetch": true or false (json-bool)
Example:
-> { "execute": "query-pci" }
<- {
"return":[
{
"bus":0,
"devices":[
{
"bus":0,
"qdev_id":"",
"slot":0,
"class_info":{
"class":1536,
"desc":"Host bridge"
},
"id":{
"device":32902,
"vendor":4663
},
"function":0,
"regions":[
]
},
{
"bus":0,
"qdev_id":"",
"slot":1,
"class_info":{
"class":1537,
"desc":"ISA bridge"
},
"id":{
"device":32902,
"vendor":28672
},
"function":0,
"regions":[
]
},
{
"bus":0,
"qdev_id":"",
"slot":1,
"class_info":{
"class":257,
"desc":"IDE controller"
},
"id":{
"device":32902,
"vendor":28688
},
"function":1,
"regions":[
{
"bar":4,
"size":16,
"address":49152,
"type":"io"
}
]
},
{
"bus":0,
"qdev_id":"",
"slot":2,
"class_info":{
"class":768,
"desc":"VGA controller"
},
"id":{
"device":4115,
"vendor":184
},
"function":0,
"regions":[
{
"prefetch":true,
"mem_type_64":false,
"bar":0,
"size":33554432,
"address":4026531840,
"type":"memory"
},
{
"prefetch":false,
"mem_type_64":false,
"bar":1,
"size":4096,
"address":4060086272,
"type":"memory"
},
{
"prefetch":false,
"mem_type_64":false,
"bar":6,
"size":65536,
"address":-1,
"type":"memory"
}
]
},
{
"bus":0,
"qdev_id":"",
"irq":11,
"slot":4,
"class_info":{
"class":1280,
"desc":"RAM controller"
},
"id":{
"device":6900,
"vendor":4098
},
"function":0,
"regions":[
{
"bar":0,
"size":32,
"address":49280,
"type":"io"
}
]
}
]
}
]
}
Note: This example has been shortened as the real response is too long.
EQMP
STEXI
@item info tlb
show virtual to physical memory mappings (i386 only)
@item info mem
show the active virtual memory mappings (i386 only)
ETEXI
STEXI
@item info jit
show dynamic compiler info
@item info kvm
show KVM information
@item info numa
show NUMA information
ETEXI
STEXI
@item info kvm
show KVM information
ETEXI
SQMP
query-kvm
---------
Show KVM information.
Return a json-object with the following information:
- "enabled": true if KVM support is enabled, false otherwise (json-bool)
- "present": true if QEMU has KVM support, false otherwise (json-bool)
Example:
-> { "execute": "query-kvm" }
<- { "return": { "enabled": true, "present": true } }
EQMP
STEXI
@item info usb
show USB devices plugged on the virtual USB hub
@item info usbhost
show all USB host devices
@item info profile
show profiling information
@item info capture
show information about active capturing
@item info snapshots
show list of VM snapshots
ETEXI
STEXI
@item info status
show the current VM status (running|paused)
ETEXI
SQMP
query-status
------------
Return a json-object with the following information:
- "running": true if the VM is running, or false if it is paused (json-bool)
- "singlestep": true if the VM is in single step mode,
false otherwise (json-bool)
Example:
-> { "execute": "query-status" }
<- { "return": { "running": true, "singlestep": false } }
EQMP
STEXI
@item info pcmcia
show guest PCMCIA status
ETEXI
STEXI
@item info mice
show which guest mouse is receiving events
ETEXI
SQMP
query-mice
----------
Show VM mice information.
Each mouse is represented by a json-object, the returned value is a json-array
of all mice.
The mouse json-object contains the following:
- "name": mouse's name (json-string)
- "index": mouse's index (json-int)
- "current": true if this mouse is receiving events, false otherwise (json-bool)
- "absolute": true if the mouse generates absolute input events (json-bool)
Example:
-> { "execute": "query-mice" }
<- {
"return":[
{
"name":"QEMU Microsoft Mouse",
"index":0,
"current":false,
"absolute":false
},
{
"name":"QEMU PS/2 Mouse",
"index":1,
"current":true,
"absolute":true
}
]
}
EQMP
STEXI
@item info vnc
show the vnc server status
ETEXI
SQMP
query-vnc
---------
Show VNC server information.
Return a json-object with server information. Connected clients are returned
as a json-array of json-objects.
The main json-object contains the following:
- "enabled": true or false (json-bool)
- "host": server's IP address (json-string)
- "family": address family (json-string)
- Possible values: "ipv4", "ipv6", "unix", "unknown"
- "service": server's port number (json-string)
- "auth": authentication method (json-string)
- Possible values: "invalid", "none", "ra2", "ra2ne", "sasl", "tight",
"tls", "ultra", "unknown", "vencrypt", "vencrypt",
"vencrypt+plain", "vencrypt+tls+none",
"vencrypt+tls+plain", "vencrypt+tls+sasl",
"vencrypt+tls+vnc", "vencrypt+x509+none",
"vencrypt+x509+plain", "vencrypt+x509+sasl",
"vencrypt+x509+vnc", "vnc"
- "clients": a json-array of all connected clients
Clients are described by a json-object, each one contain the following:
- "host": client's IP address (json-string)
- "family": address family (json-string)
- Possible values: "ipv4", "ipv6", "unix", "unknown"
- "service": client's port number (json-string)
- "x509_dname": TLS dname (json-string, optional)
- "sasl_username": SASL username (json-string, optional)
Example:
-> { "execute": "query-vnc" }
<- {
"return":{
"enabled":true,
"host":"0.0.0.0",
"service":"50402",
"auth":"vnc",
"family":"ipv4",
"clients":[
{
"host":"127.0.0.1",
"service":"50401",
"family":"ipv4"
}
]
}
}
EQMP
STEXI
@item info name
show the current VM name
ETEXI
SQMP
query-name
----------
Show VM name.
Return a json-object with the following information:
- "name": VM's name (json-string, optional)
Example:
-> { "execute": "query-name" }
<- { "return": { "name": "qemu-name" } }
EQMP
STEXI
@item info uuid
show the current VM UUID
ETEXI
SQMP
query-uuid
----------
Show VM UUID.
Return a json-object with the following information:
- "UUID": Universally Unique Identifier (json-string)
Example:
-> { "execute": "query-uuid" }
<- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } }
EQMP
STEXI
@item info cpustats
show CPU statistics
@item info usernet
show user network stack connection states
ETEXI
STEXI
@item info migrate
show migration status
ETEXI
SQMP
query-migrate
-------------
Migration status.
Return a json-object. If migration is active there will be another json-object
with RAM migration status and if block migration is active another one with
block migration status.
The main json-object contains the following:
- "status": migration status (json-string)
- Possible values: "active", "completed", "failed", "cancelled"
- "ram": only present if "status" is "active", it is a json-object with the
following RAM information (in bytes):
- "transferred": amount transferred (json-int)
- "remaining": amount remaining (json-int)
- "total": total (json-int)
- "disk": only present if "status" is "active" and it is a block migration,
it is a json-object with the following disk information (in bytes):
- "transferred": amount transferred (json-int)
- "remaining": amount remaining (json-int)
- "total": total (json-int)
Examples:
1. Before the first migration
-> { "execute": "query-migrate" }
<- { "return": {} }
2. Migration is done and has succeeded
-> { "execute": "query-migrate" }
<- { "return": { "status": "completed" } }
3. Migration is done and has failed
-> { "execute": "query-migrate" }
<- { "return": { "status": "failed" } }
4. Migration is being performed and is not a block migration:
-> { "execute": "query-migrate" }
<- {
"return":{
"status":"active",
"ram":{
"transferred":123,
"remaining":123,
"total":246
}
}
}
5. Migration is being performed and is a block migration:
-> { "execute": "query-migrate" }
<- {
"return":{
"status":"active",
"ram":{
"total":1057024,
"remaining":1053304,
"transferred":3720
},
"disk":{
"total":20971520,
"remaining":20880384,
"transferred":91136
}
}
}
EQMP
STEXI
@item info balloon
show balloon information
ETEXI
SQMP
query-balloon
-------------
Show balloon information.
Make an asynchronous request for balloon info. When the request completes a
json-object will be returned containing the following data:
- "actual": current balloon value in bytes (json-int)
- "mem_swapped_in": Amount of memory swapped in bytes (json-int, optional)
- "mem_swapped_out": Amount of memory swapped out in bytes (json-int, optional)
- "major_page_faults": Number of major faults (json-int, optional)
- "minor_page_faults": Number of minor faults (json-int, optional)
- "free_mem": Total amount of free and unused memory in
bytes (json-int, optional)
- "total_mem": Total amount of available memory in bytes (json-int, optional)
Example:
-> { "execute": "query-balloon" }
<- {
"return":{
"actual":1073741824,
"mem_swapped_in":0,
"mem_swapped_out":0,
"major_page_faults":142,
"minor_page_faults":239245,
"free_mem":1014185984,
"total_mem":1044668416
}
}
EQMP
STEXI
@item info qtree
show device tree
@item info qdm
show qdev device model list
@item info roms
show roms
@end table
ETEXI
#ifdef CONFIG_SIMPLE_TRACE
STEXI
@item info trace
show contents of trace buffer
@item info trace-events
show available trace events and their state
ETEXI
#endif
HXCOMM DO NOT add new commands after 'info', move your addition before it!
STEXI
@end table
ETEXI
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