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
DEF(command
, args
, callback, arg_string
, help
) is used to construct
5 HXCOMM monitor commands
6 HXCOMM HXCOMM can be used
for comments
, discarded from both texi and C
14 .args_type
= "name:S?",
16 .help
= "show the help",
17 .mhandler
.cmd
= do_help_cmd
,
21 @item help or ?
[@
var{cmd
}]
23 Show the help
for all commands or just
for command @
var{cmd
}.
28 .args_type
= "device:B",
29 .params
= "device|all",
30 .help
= "commit changes to the disk images (if -snapshot is used) or backing files",
31 .mhandler
.cmd
= do_commit
,
37 Commit changes to the disk
images (if -snapshot is used
) or backing files
.
38 If the backing file is smaller than the snapshot
, then the backing file will be
39 resized to be the same size as the snapshot
. If the snapshot is smaller than
40 the backing file
, the backing file will not be truncated
. If you want the
41 backing file to match the size of the smaller snapshot
, you can safely truncate
42 it yourself once the commit operation successfully completes
.
49 .help
= "quit the emulator",
50 .user_print
= monitor_user_noop
,
51 .mhandler
.cmd
= hmp_quit
,
61 .name
= "block_resize",
62 .args_type
= "device:B,size:o",
63 .params
= "device size",
64 .help
= "resize a block image",
65 .mhandler
.cmd
= hmp_block_resize
,
71 Resize a block image
while a guest is running
. Usually requires guest
72 action to see the updated size
. Resize to a lower size is supported
,
73 but should be used with extreme caution
. Note that
this command only
74 resizes image files
, it can not resize block devices like LVM volumes
.
78 .name
= "block_stream",
79 .args_type
= "device:B,speed:o?,base:s?",
80 .params
= "device [speed [base]]",
81 .help
= "copy data from a backing file into a block device",
82 .mhandler
.cmd
= hmp_block_stream
,
88 Copy data from a backing file into a block device
.
92 .name
= "block_job_set_speed",
93 .args_type
= "device:B,speed:o",
94 .params
= "device speed",
95 .help
= "set maximum speed for a background block operation",
96 .mhandler
.cmd
= hmp_block_job_set_speed
,
100 @item block_job_set_speed
101 @findex block_job_set_speed
102 Set maximum speed
for a background block operation
.
106 .name
= "block_job_cancel",
107 .args_type
= "force:-f,device:B",
108 .params
= "[-f] device",
109 .help
= "stop an active background block operation (use -f"
110 "\n\t\t\t if the operation is currently paused)",
111 .mhandler
.cmd
= hmp_block_job_cancel
,
115 @item block_job_cancel
116 @findex block_job_cancel
117 Stop an active background block
operation (streaming
, mirroring
).
121 .name
= "block_job_complete",
122 .args_type
= "device:B",
124 .help
= "stop an active background block operation",
125 .mhandler
.cmd
= hmp_block_job_complete
,
129 @item block_job_complete
130 @findex block_job_complete
131 Manually trigger completion of an active background block operation
.
132 For mirroring
, this will
switch the device to the destination path
.
136 .name
= "block_job_pause",
137 .args_type
= "device:B",
139 .help
= "pause an active background block operation",
140 .mhandler
.cmd
= hmp_block_job_pause
,
144 @item block_job_pause
145 @findex block_job_pause
146 Pause an active block streaming operation
.
150 .name
= "block_job_resume",
151 .args_type
= "device:B",
153 .help
= "resume a paused background block operation",
154 .mhandler
.cmd
= hmp_block_job_resume
,
158 @item block_job_resume
159 @findex block_job_resume
160 Resume a paused block streaming operation
.
165 .args_type
= "force:-f,device:B",
166 .params
= "[-f] device",
167 .help
= "eject a removable medium (use -f to force it)",
168 .mhandler
.cmd
= hmp_eject
,
172 @item eject
[-f
] @
var{device
}
174 Eject a removable
medium (use
-f to force it
).
181 .help
= "remove host block device",
182 .user_print
= monitor_user_noop
,
183 .mhandler
.cmd_new
= do_drive_del
,
187 @item drive_del @
var{device
}
189 Remove host block device
. The result is that guest generated IO is no longer
190 submitted against the host device underlying the disk
. Once a drive has
191 been deleted
, the QEMU Block layer returns
-EIO which results
in IO
192 errors
in the guest
for applications that are reading
/writing to the device
.
193 These errors are always reported to the guest
, regardless of the drive
's error
194 actions (drive options rerror, werror).
199 .args_type = "device:B,target:F,arg:s?",
200 .params = "device filename [format]",
201 .help = "change a removable medium, optional format",
202 .mhandler.cmd = hmp_change,
206 @item change @var{device} @var{setting}
209 Change the configuration of a device.
212 @item change @var{diskdevice} @var{filename} [@var{format}]
213 Change the medium for a removable disk device to point to @var{filename}. eg
216 (qemu) change ide1-cd0 /path/to/some.iso
219 @var{format} is optional.
221 @item change vnc @var{display},@var{options}
222 Change the configuration of the VNC server. The valid syntax for @var{display}
223 and @var{options} are described at @ref{sec_invocation}. eg
226 (qemu) change vnc localhost:1
229 @item change vnc password [@var{password}]
231 Change the password associated with the VNC server. If the new password is not
232 supplied, the monitor will prompt for it to be entered. VNC passwords are only
233 significant up to 8 letters. eg
236 (qemu) change vnc password
244 .name = "screendump",
245 .args_type = "filename:F",
246 .params = "filename",
247 .help = "save screen into PPM image 'filename
'",
248 .mhandler.cmd = hmp_screen_dump,
252 @item screendump @var{filename}
254 Save screen into PPM image @var{filename}.
259 .args_type = "filename:F",
260 .params = "filename",
261 .help = "output logs to 'filename
'",
262 .mhandler.cmd = do_logfile,
266 @item logfile @var{filename}
268 Output logs to @var{filename}.
272 .name = "trace-event",
273 .args_type = "name:s,option:b",
274 .params = "name on|off",
275 .help = "changes status of a specific trace event",
276 .mhandler.cmd = do_trace_event_set_state,
282 changes status of a trace event
285 #if defined(CONFIG_TRACE_SIMPLE)
287 .name = "trace-file",
288 .args_type = "op:s?,arg:F?",
289 .params = "on|off|flush|set [arg]",
290 .help = "open, close, or flush trace file, or set a new file name",
291 .mhandler.cmd = do_trace_file,
295 @item trace-file on|off|flush
297 Open, close, or flush the trace file. If no argument is given, the status of the trace file is displayed.
303 .args_type = "items:s",
304 .params = "item1[,...]",
305 .help = "activate logging of the specified items",
306 .mhandler.cmd = do_log,
310 @item log @var{item1}[,...]
312 Activate logging of the specified items.
317 .args_type = "name:s?",
318 .params = "[tag|id]",
319 .help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
320 .mhandler.cmd = do_savevm,
324 @item savevm [@var{tag}|@var{id}]
326 Create a snapshot of the whole virtual machine. If @var{tag} is
327 provided, it is used as human readable identifier. If there is already
328 a snapshot with the same tag or ID, it is replaced. More info at
334 .args_type = "name:s",
336 .help = "restore a VM snapshot from its tag or id",
337 .mhandler.cmd = do_loadvm,
341 @item loadvm @var{tag}|@var{id}
343 Set the whole virtual machine to the snapshot identified by the tag
344 @var{tag} or the unique snapshot ID @var{id}.
349 .args_type = "name:s",
351 .help = "delete a VM snapshot from its tag or id",
352 .mhandler.cmd = do_delvm,
356 @item delvm @var{tag}|@var{id}
358 Delete the snapshot identified by @var{tag} or @var{id}.
362 .name = "singlestep",
363 .args_type = "option:s?",
364 .params = "[on|off]",
365 .help = "run emulation in singlestep mode or switch to normal mode",
366 .mhandler.cmd = do_singlestep,
370 @item singlestep [off]
372 Run the emulation in single step mode.
373 If called with option off, the emulation returns to normal mode.
380 .help = "stop emulation",
381 .mhandler.cmd = hmp_stop,
394 .help = "resume emulation",
395 .mhandler.cmd = hmp_cont,
405 .name = "system_wakeup",
408 .help = "wakeup guest from suspend",
409 .mhandler.cmd = hmp_system_wakeup,
414 @findex system_wakeup
415 Wakeup guest from suspend.
420 .args_type = "device:s?",
421 .params = "[device]",
422 .help = "start gdbserver on given device (default 'tcp
::1234'), stop with 'none
'",
423 .mhandler.cmd = do_gdbserver,
427 @item gdbserver [@var{port}]
429 Start gdbserver session (default @var{port}=1234)
434 .args_type = "fmt:/,addr:l",
435 .params = "/fmt addr",
436 .help = "virtual memory dump starting at 'addr
'",
437 .mhandler.cmd = do_memory_dump,
441 @item x/fmt @var{addr}
443 Virtual memory dump starting at @var{addr}.
448 .args_type = "fmt:/,addr:l",
449 .params = "/fmt addr",
450 .help = "physical memory dump starting at 'addr
'",
451 .mhandler.cmd = do_physical_memory_dump,
455 @item xp /@var{fmt} @var{addr}
457 Physical memory dump starting at @var{addr}.
459 @var{fmt} is a format which tells the command how to format the
460 data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
464 is the number of items to be dumped.
467 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
468 c (char) or i (asm instruction).
471 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
472 @code{h} or @code{w} can be specified with the @code{i} format to
473 respectively select 16 or 32 bit code instruction size.
480 Dump 10 instructions at the current instruction pointer:
485 0x90107065: lea 0x0(%esi,1),%esi
486 0x90107069: lea 0x0(%edi,1),%edi
488 0x90107071: jmp 0x90107080
496 Dump 80 16 bit values at the start of the video memory.
498 (qemu) xp/80hx 0xb8000
499 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
500 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
501 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
502 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
503 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
504 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
505 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
506 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
507 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
508 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
515 .args_type = "fmt:/,val:l",
516 .params = "/fmt expr",
517 .help = "print expression value (use $reg for CPU register access)",
518 .mhandler.cmd = do_print,
522 @item p or print/@var{fmt} @var{expr}
525 Print expression value. Only the @var{format} part of @var{fmt} is
531 .args_type = "fmt:/,addr:i,index:i.",
532 .params = "/fmt addr",
533 .help = "I/O port read",
534 .mhandler.cmd = do_ioport_read,
543 .args_type = "fmt:/,addr:i,val:i",
544 .params = "/fmt addr value",
545 .help = "I/O port write",
546 .mhandler.cmd = do_ioport_write,
555 .args_type = "keys:s,hold-time:i?",
556 .params = "keys [hold_ms]",
557 .help = "send keys to the VM (e.g. 'sendkey ctrl
-alt
-f1
', default hold time=100 ms)",
558 .mhandler.cmd = hmp_send_key,
559 .command_completion = sendkey_completion,
563 @item sendkey @var{keys}
566 Send @var{keys} to the guest. @var{keys} could be the name of the
567 key or the raw value in hexadecimal format. Use @code{-} to press
568 several keys simultaneously. Example:
573 This command is useful to send keys that your graphical user interface
574 intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
578 .name = "system_reset",
581 .help = "reset the system",
582 .mhandler.cmd = hmp_system_reset,
593 .name = "system_powerdown",
596 .help = "send system power down event",
597 .mhandler.cmd = hmp_system_powerdown,
601 @item system_powerdown
602 @findex system_powerdown
604 Power down the system (if supported).
609 .args_type = "start:i,size:i",
610 .params = "addr size",
611 .help = "compute the checksum of a memory region",
612 .mhandler.cmd = do_sum,
616 @item sum @var{addr} @var{size}
619 Compute the checksum of a memory region.
624 .args_type = "devname:s",
626 .help = "add USB device (e.g. 'host
:bus
.addr
' or 'host
:vendor_id
:product_id
')",
627 .mhandler.cmd = do_usb_add,
631 @item usb_add @var{devname}
634 Add the USB device @var{devname}. For details of available devices see
640 .args_type = "devname:s",
642 .help = "remove USB device 'bus
.addr
'",
643 .mhandler.cmd = do_usb_del,
647 @item usb_del @var{devname}
650 Remove the USB device @var{devname} from the QEMU virtual USB
651 hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
652 command @code{info usb} to see the devices you can remove.
656 .name = "device_add",
657 .args_type = "device:O",
658 .params = "driver[,prop=value][,...]",
659 .help = "add device, like -device on the command line",
660 .user_print = monitor_user_noop,
661 .mhandler.cmd_new = do_device_add,
662 .command_completion = device_add_completion,
666 @item device_add @var{config}
673 .name = "device_del",
676 .help = "remove device",
677 .mhandler.cmd = hmp_device_del,
678 .command_completion = device_del_completion,
682 @item device_del @var{id}
685 Remove device @var{id}.
690 .args_type = "index:i",
692 .help = "set the default CPU",
693 .mhandler.cmd = hmp_cpu,
697 @item cpu @var{index}
703 .name = "mouse_move",
704 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
705 .params = "dx dy [dz]",
706 .help = "send mouse move events",
707 .mhandler.cmd = do_mouse_move,
711 @item mouse_move @var{dx} @var{dy} [@var{dz}]
713 Move the active mouse to the specified coordinates @var{dx} @var{dy}
714 with optional scroll axis @var{dz}.
718 .name = "mouse_button",
719 .args_type = "button_state:i",
721 .help = "change mouse button state (1=L, 2=M, 4=R)",
722 .mhandler.cmd = do_mouse_button,
726 @item mouse_button @var{val}
728 Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
733 .args_type = "index:i",
735 .help = "set which mouse device receives events",
736 .mhandler.cmd = do_mouse_set,
740 @item mouse_set @var{index}
742 Set which mouse device receives events at given @var{index}, index
750 .name = "wavcapture",
751 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?",
752 .params = "path [frequency [bits [channels]]]",
753 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
754 .mhandler.cmd = do_wav_capture,
757 @item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
759 Capture audio into @var{filename}. Using sample rate @var{frequency}
760 bits per sample @var{bits} and number of channels @var{channels}.
764 @item Sample rate = 44100 Hz - CD quality
766 @item Number of channels = 2 - Stereo
771 .name = "stopcapture",
773 .params = "capture index",
774 .help = "stop capture",
775 .mhandler.cmd = do_stop_capture,
778 @item stopcapture @var{index}
780 Stop capture with a given @var{index}, index can be obtained with
788 .args_type = "val:l,size:i,filename:s",
789 .params = "addr size file",
790 .help = "save to disk virtual memory dump starting at 'addr
' of size 'size
'",
791 .mhandler.cmd = hmp_memsave,
795 @item memsave @var{addr} @var{size} @var{file}
797 save to disk virtual memory dump starting at @var{addr} of size @var{size}.
802 .args_type = "val:l,size:i,filename:s",
803 .params = "addr size file",
804 .help = "save to disk physical memory dump starting at 'addr
' of size 'size
'",
805 .mhandler.cmd = hmp_pmemsave,
809 @item pmemsave @var{addr} @var{size} @var{file}
811 save to disk physical memory dump starting at @var{addr} of size @var{size}.
816 .args_type = "bootdevice:s",
817 .params = "bootdevice",
818 .help = "define new values for the boot device list",
819 .mhandler.cmd = do_boot_set,
823 @item boot_set @var{bootdevicelist}
826 Define new values for the boot device list. Those values will override
827 the values specified on the command line through the @code{-boot} option.
829 The values that can be specified here depend on the machine type, but are
830 the same that can be specified in the @code{-boot} command line option.
833 #if defined(TARGET_I386) || defined(TARGET_S390X)
838 .help = "inject an NMI on all guest's CPUs
",
839 .mhandler.cmd = hmp_inject_nmi,
845 Inject an NMI (x86) or RESTART (s390x) on the given CPU.
850 .name = "ringbuf_write
",
851 .args_type = "device
:s
,data
:s
",
852 .params = "device data
",
853 .help = "Write to a ring buffer character device
",
854 .mhandler.cmd = hmp_ringbuf_write,
858 @item ringbuf_write @var{device} @var{data}
859 @findex ringbuf_write
860 Write @var{data} to ring buffer character device @var{device}.
861 @var{data} must be a UTF-8 string.
866 .name = "ringbuf_read
",
867 .args_type = "device
:s
,size
:i
",
868 .params = "device size
",
869 .help = "Read from a ring buffer character device
",
870 .mhandler.cmd = hmp_ringbuf_read,
874 @item ringbuf_read @var{device}
876 Read and print up to @var{size} bytes from ring buffer character
878 Certain non-printable characters are printed \uXXXX, where XXXX is the
879 character code in hexadecimal. Character \ is printed \\.
880 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
881 NUL characters, after the ring buffer lost data, and when reading
882 stops because the size limit is reached.
888 .args_type = "detach
:-d
,blk
:-b
,inc
:-i
,uri
:s
",
889 .params = "[-d
] [-b
] [-i
] uri
",
890 .help = "migrate to
URI (using -d to not wait
for completion
)"
891 "\n\t\t\t -b
for migration without shared storage with
"
892 " full copy of disk
\n\t\t\t -i
for migration without
"
893 "shared storage with incremental copy of disk
"
894 "(base image shared between src and destination
)",
895 .mhandler.cmd = hmp_migrate,
900 @item migrate [-d] [-b] [-i] @var{uri}
902 Migrate to @var{uri} (using -d to not wait for completion).
903 -b for migration with full copy of disk
904 -i for migration with incremental copy of disk (base image is shared)
908 .name = "migrate_cancel
",
911 .help = "cancel the current VM migration
",
912 .mhandler.cmd = hmp_migrate_cancel,
917 @findex migrate_cancel
918 Cancel the current VM migration.
923 .name = "migrate_set_cache_size
",
924 .args_type = "value
:o
",
926 .help = "set cache
size (in bytes
) for XBZRLE migrations
,"
927 "the cache size will be rounded down to the nearest
"
929 "The cache size affects the number of cache misses
."
930 "In
case of a high cache miss ratio you need to increase
"
932 .mhandler.cmd = hmp_migrate_set_cache_size,
936 @item migrate_set_cache_size @var{value}
937 @findex migrate_set_cache_size
938 Set cache size to @var{value} (in bytes) for xbzrle migrations.
942 .name = "migrate_set_speed
",
943 .args_type = "value
:o
",
945 .help = "set maximum
speed (in bytes
) for migrations
. "
946 "Defaults to MB
if no size suffix is specified
, ie
. B
/K
/M
/G
/T
",
947 .mhandler.cmd = hmp_migrate_set_speed,
951 @item migrate_set_speed @var{value}
952 @findex migrate_set_speed
953 Set maximum speed to @var{value} (in bytes) for migrations.
957 .name = "migrate_set_downtime
",
958 .args_type = "value
:T
",
960 .help = "set maximum tolerated
downtime (in seconds
) for migrations
",
961 .mhandler.cmd = hmp_migrate_set_downtime,
965 @item migrate_set_downtime @var{second}
966 @findex migrate_set_downtime
967 Set maximum tolerated downtime (in seconds) for migration.
971 .name = "migrate_set_capability
",
972 .args_type = "capability
:s
,state
:b
",
973 .params = "capability state
",
974 .help = "Enable
/Disable the usage of a capability
for migration
",
975 .mhandler.cmd = hmp_migrate_set_capability,
979 @item migrate_set_capability @var{capability} @var{state}
980 @findex migrate_set_capability
981 Enable/Disable the usage of a capability @var{capability} for migration.
985 .name = "client_migrate_info
",
986 .args_type = "protocol
:s
,hostname
:s
,port
:i?
,tls
-port
:i?
,cert
-subject
:s?
",
987 .params = "protocol hostname port tls
-port cert
-subject
",
988 .help = "send migration info to spice
/vnc client
",
989 .user_print = monitor_user_noop,
990 .mhandler.cmd_async = client_migrate_info,
991 .flags = MONITOR_CMD_ASYNC,
995 @item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
996 @findex client_migrate_info
997 Set the spice/vnc connection info for the migration target. The spice/vnc
998 server will ask the spice/vnc client to automatically reconnect using the
999 new parameters (if specified) once the vm migration finished successfully.
1003 .name = "dump
-guest
-memory
",
1004 .args_type = "paging
:-p
,zlib
:-z
,lzo
:-l
,snappy
:-s
,filename
:F
,begin
:i?
,length
:i?
",
1005 .params = "[-p
] [-z|
-l|
-s
] filename
[begin length
]",
1006 .help = "dump guest memory into file
'filename'.\n\t\t\t"
1007 "-p
: do paging to get guest
's memory mapping.\n\t\t\t"
1008 "-z: dump in kdump-compressed format, with zlib compression.\n\t\t\t"
1009 "-l: dump in kdump-compressed format, with lzo compression.\n\t\t\t"
1010 "-s: dump in kdump-compressed format, with snappy compression.\n\t\t\t"
1011 "begin: the starting physical address.\n\t\t\t"
1012 "length: the memory size, in bytes.",
1013 .mhandler.cmd = hmp_dump_guest_memory,
1018 @item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1019 @item dump-guest-memory [-z|-l|-s] @var{filename}
1020 @findex dump-guest-memory
1021 Dump guest memory to @var{protocol}. The file can be processed with crash or
1022 gdb. Without -z|-l|-s, the dump format is ELF.
1023 -p: do paging to get guest's memory mapping
.
1024 -z
: dump
in kdump
-compressed format
, with zlib compression
.
1025 -l
: dump
in kdump
-compressed format
, with lzo compression
.
1026 -s
: dump
in kdump
-compressed format
, with snappy compression
.
1027 filename
: dump file name
.
1028 begin
: the starting physical address
. It
's optional, and should be
1029 specified together with length.
1030 length: the memory size, in bytes. It's optional
, and should be specified
1031 together with begin
.
1035 .name
= "snapshot_blkdev",
1036 .args_type
= "reuse:-n,device:B,snapshot-file:s?,format:s?",
1037 .params
= "[-n] device [new-image-file] [format]",
1038 .help
= "initiates a live snapshot\n\t\t\t"
1039 "of device. If a new image file is specified, the\n\t\t\t"
1040 "new image file will become the new root image.\n\t\t\t"
1041 "If format is specified, the snapshot file will\n\t\t\t"
1042 "be created in that format.\n\t\t\t"
1043 "The default format is qcow2. The -n flag requests QEMU\n\t\t\t"
1044 "to reuse the image found in new-image-file, instead of\n\t\t\t"
1045 "recreating it from scratch.",
1046 .mhandler
.cmd
= hmp_snapshot_blkdev
,
1050 @item snapshot_blkdev
1051 @findex snapshot_blkdev
1052 Snapshot device
, using snapshot file as target
if provided
1056 .name
= "snapshot_blkdev_internal",
1057 .args_type
= "device:B,name:s",
1058 .params
= "device name",
1059 .help
= "take an internal snapshot of device.\n\t\t\t"
1060 "The format of the image used by device must\n\t\t\t"
1061 "support it, such as qcow2.\n\t\t\t",
1062 .mhandler
.cmd
= hmp_snapshot_blkdev_internal
,
1066 @item snapshot_blkdev_internal
1067 @findex snapshot_blkdev_internal
1068 Take an internal snapshot on device
if it support
1072 .name
= "snapshot_delete_blkdev_internal",
1073 .args_type
= "device:B,name:s,id:s?",
1074 .params
= "device name [id]",
1075 .help
= "delete an internal snapshot of device.\n\t\t\t"
1076 "If id is specified, qemu will try delete\n\t\t\t"
1077 "the snapshot matching both id and name.\n\t\t\t"
1078 "The format of the image used by device must\n\t\t\t"
1079 "support it, such as qcow2.\n\t\t\t",
1080 .mhandler
.cmd
= hmp_snapshot_delete_blkdev_internal
,
1084 @item snapshot_delete_blkdev_internal
1085 @findex snapshot_delete_blkdev_internal
1086 Delete an internal snapshot on device
if it support
1090 .name
= "drive_mirror",
1091 .args_type
= "reuse:-n,full:-f,device:B,target:s,format:s?",
1092 .params
= "[-n] [-f] device target [format]",
1093 .help
= "initiates live storage\n\t\t\t"
1094 "migration for a device. The device's contents are\n\t\t\t"
1095 "copied to the new image file, including data that\n\t\t\t"
1096 "is written after the command is started.\n\t\t\t"
1097 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1098 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1099 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1100 "so that the result does not need a backing file.\n\t\t\t",
1101 .mhandler
.cmd
= hmp_drive_mirror
,
1105 @findex drive_mirror
1106 Start mirroring a block device
's writes to a new destination,
1107 using the specified target.
1111 .name = "drive_backup",
1112 .args_type = "reuse:-n,full:-f,device:B,target:s,format:s?",
1113 .params = "[-n] [-f] device target [format]",
1114 .help = "initiates a point-in-time\n\t\t\t"
1115 "copy for a device. The device's contents are
\n\t\t\t"
1116 "copied to the
new image file
, excluding data that
\n\t\t\t"
1117 "is written after the command is started
.\n\t\t\t"
1118 "The
-n flag requests QEMU to reuse the image found
\n\t\t\t"
1119 "in new-image
-file
, instead of recreating it from scratch
.\n\t\t\t"
1120 "The
-f flag requests QEMU to copy the whole disk
,\n\t\t\t"
1121 "so that the result does not need a backing file
.\n\t\t\t",
1122 .mhandler.cmd = hmp_drive_backup,
1126 @findex drive_backup
1127 Start a point-in-time copy of a block device to a specificed target.
1131 .name = "drive_add
",
1132 .args_type = "pci_addr
:s
,opts
:s
",
1133 .params = "[[<domain
>:]<bus
>:]<slot
>\n"
1134 "[file
=file
][,if=type
][,bus
=n
]\n"
1135 "[,unit
=m
][,media
=d
][,index
=i
]\n"
1136 "[,cyls
=c
,heads
=h
,secs
=s
[,trans
=t
]]\n"
1137 "[,snapshot
=on|off
][,cache
=on|off
]\n"
1138 "[,readonly
=on|off
][,copy
-on
-read
=on|off
]",
1139 .help = "add drive to PCI storage controller
",
1140 .mhandler.cmd = drive_hot_add,
1146 Add drive to PCI storage controller.
1149 #if defined(CONFIG_PCI_HOTPLUG_OLD)
1152 .args_type = "pci_addr
:s
,type
:s
,opts
:s?
",
1153 .params = "auto|
[[<domain
>:]<bus
>:]<slot
> nic|storage
[[vlan
=n
][,macaddr
=addr
][,model
=type
]] [file
=file
][,if=type
][,bus
=nr
]...",
1154 .help = "hot
-add PCI device
",
1155 .mhandler.cmd = pci_device_hot_add,
1165 #if defined(CONFIG_PCI_HOTPLUG_OLD)
1168 .args_type = "pci_addr
:s
",
1169 .params = "[[<domain
>:]<bus
>:]<slot
>",
1170 .help = "hot remove PCI device
",
1171 .mhandler.cmd = do_pci_device_hot_remove,
1178 Hot remove PCI device.
1182 .name = "pcie_aer_inject_error
",
1183 .args_type = "advisory_non_fatal
:-a
,correctable
:-c
,"
1184 "id
:s
,error_status
:s
,"
1185 "header0
:i?
,header1
:i?
,header2
:i?
,header3
:i?
,"
1186 "prefix0
:i?
,prefix1
:i?
,prefix2
:i?
,prefix3
:i?
",
1187 .params = "[-a
] [-c
] id
"
1188 "<error_status
> [<tlp header
> [<tlp header prefix
>]]",
1189 .help = "inject pcie aer error
\n\t\t\t"
1190 " -a
for advisory non fatal error
\n\t\t\t"
1191 " -c
for correctable error
\n\t\t\t"
1192 "<id
> = qdev device id
\n\t\t\t"
1193 "<error_status
> = error string or
32bit
\n\t\t\t"
1194 "<tlb header
> = 32bit x
4\n\t\t\t"
1195 "<tlb header prefix
> = 32bit x
4",
1196 .user_print = pcie_aer_inject_error_print,
1197 .mhandler.cmd_new = do_pcie_aer_inject_error,
1201 @item pcie_aer_inject_error
1202 @findex pcie_aer_inject_error
1203 Inject PCIe AER error
1207 .name = "host_net_add
",
1208 .args_type = "device
:s
,opts
:s?
",
1209 .params = "tap|user|socket|vde|netmap|dump
[options
]",
1210 .help = "add host VLAN client
",
1211 .mhandler.cmd = net_host_device_add,
1216 @findex host_net_add
1217 Add host VLAN client.
1221 .name = "host_net_remove
",
1222 .args_type = "vlan_id
:i
,device
:s
",
1223 .params = "vlan_id name
",
1224 .help = "remove host VLAN client
",
1225 .mhandler.cmd = net_host_device_remove,
1229 @item host_net_remove
1230 @findex host_net_remove
1231 Remove host VLAN client.
1235 .name = "netdev_add
",
1236 .args_type = "netdev
:O
",
1237 .params = "[user|tap|socket|vde|bridge|hubport|netmap
],id
=str
[,prop
=value
][,...]",
1238 .help = "add host network device
",
1239 .mhandler.cmd = hmp_netdev_add,
1240 .command_completion = netdev_add_completion,
1246 Add host network device.
1250 .name = "netdev_del
",
1251 .args_type = "id
:s
",
1253 .help = "remove host network device
",
1254 .mhandler.cmd = hmp_netdev_del,
1255 .command_completion = netdev_del_completion,
1261 Remove host network device.
1265 .name = "object_add
",
1266 .args_type = "object
:O
",
1267 .params = "[qom
-type
=]type
,id
=str
[,prop
=value
][,...]",
1268 .help = "create QOM object
",
1269 .mhandler.cmd = hmp_object_add,
1270 .command_completion = object_add_completion,
1280 .name = "object_del
",
1281 .args_type = "id
:s
",
1283 .help = "destroy QOM object
",
1284 .mhandler.cmd = hmp_object_del,
1285 .command_completion = object_del_completion,
1296 .name = "hostfwd_add
",
1297 .args_type = "arg1
:s
,arg2
:s?
,arg3
:s?
",
1298 .params = "[vlan_id name
] [tcp|udp
]:[hostaddr
]:hostport
-[guestaddr
]:guestport
",
1299 .help = "redirect TCP or UDP connections from host to
guest (requires
-net user
)",
1300 .mhandler.cmd = net_slirp_hostfwd_add,
1306 Redirect TCP or UDP connections from host to guest (requires -net user).
1311 .name = "hostfwd_remove
",
1312 .args_type = "arg1
:s
,arg2
:s?
,arg3
:s?
",
1313 .params = "[vlan_id name
] [tcp|udp
]:[hostaddr
]:hostport
",
1314 .help = "remove host
-to
-guest TCP or UDP redirection
",
1315 .mhandler.cmd = net_slirp_hostfwd_remove,
1320 @item hostfwd_remove
1321 @findex hostfwd_remove
1322 Remove host-to-guest TCP or UDP redirection.
1327 .args_type = "value
:M
",
1329 .help = "request VM to change its memory
allocation (in MB
)",
1330 .mhandler.cmd = hmp_balloon,
1334 @item balloon @var{value}
1336 Request VM to change its memory allocation to @var{value} (in MB).
1341 .args_type = "name
:s
,up
:b
",
1342 .params = "name on|off
",
1343 .help = "change the link status of a network adapter
",
1344 .mhandler.cmd = hmp_set_link,
1345 .command_completion = set_link_completion,
1349 @item set_link @var{name} [on|off]
1351 Switch link @var{name} on (i.e. up) or off (i.e. down).
1355 .name = "watchdog_action
",
1356 .args_type = "action
:s
",
1357 .params = "[reset|shutdown|poweroff|pause|debug|none
]",
1358 .help = "change watchdog action
",
1359 .mhandler.cmd = do_watchdog_action,
1363 @item watchdog_action
1364 @findex watchdog_action
1365 Change watchdog action.
1370 .args_type = "aclname
:s
",
1371 .params = "aclname
",
1372 .help = "list rules
in the access control list
",
1373 .mhandler.cmd = do_acl_show,
1377 @item acl_show @var{aclname}
1379 List all the matching rules in the access control list, and the default
1380 policy. There are currently two named access control lists,
1381 @var{vnc.x509dname} and @var{vnc.username} matching on the x509 client
1382 certificate distinguished name, and SASL username respectively.
1386 .name = "acl_policy
",
1387 .args_type = "aclname
:s
,policy
:s
",
1388 .params = "aclname allow|deny
",
1389 .help = "set
default access control list policy
",
1390 .mhandler.cmd = do_acl_policy,
1394 @item acl_policy @var{aclname} @code{allow|deny}
1396 Set the default access control list policy, used in the event that
1397 none of the explicit rules match. The default policy at startup is
1403 .args_type = "aclname
:s
,match
:s
,policy
:s
,index
:i?
",
1404 .params = "aclname match allow|deny
[index
]",
1405 .help = "add a match rule to the access control list
",
1406 .mhandler.cmd = do_acl_add,
1410 @item acl_add @var{aclname} @var{match} @code{allow|deny} [@var{index}]
1412 Add a match rule to the access control list, allowing or denying access.
1413 The match will normally be an exact username or x509 distinguished name,
1414 but can optionally include wildcard globs. eg @code{*@@EXAMPLE.COM} to
1415 allow all users in the @code{EXAMPLE.COM} kerberos realm. The match will
1416 normally be appended to the end of the ACL, but can be inserted
1417 earlier in the list if the optional @var{index} parameter is supplied.
1421 .name = "acl_remove
",
1422 .args_type = "aclname
:s
,match
:s
",
1423 .params = "aclname match
",
1424 .help = "remove a match rule from the access control list
",
1425 .mhandler.cmd = do_acl_remove,
1429 @item acl_remove @var{aclname} @var{match}
1431 Remove the specified match rule from the access control list.
1435 .name = "acl_reset
",
1436 .args_type = "aclname
:s
",
1437 .params = "aclname
",
1438 .help = "reset the access control list
",
1439 .mhandler.cmd = do_acl_reset,
1443 @item acl_reset @var{aclname}
1445 Remove all matches from the access control list, and set the default
1446 policy back to @code{deny}.
1450 .name = "nbd_server_start
",
1451 .args_type = "all
:-a
,writable
:-w
,uri
:s
",
1452 .params = "nbd_server_start
[-a
] [-w
] host
:port
",
1453 .help = "serve block devices on the given host and port
",
1454 .mhandler.cmd = hmp_nbd_server_start,
1457 @item nbd_server_start @var{host}:@var{port}
1458 @findex nbd_server_start
1459 Start an NBD server on the given host and/or port. If the @option{-a}
1460 option is included, all of the virtual machine's block devices that
1461 have an inserted media on them are automatically exported; in this case,
1462 the @option{-w} option makes the devices writable too.
1466 .name = "nbd_server_add
",
1467 .args_type = "writable
:-w
,device
:B
",
1468 .params = "nbd_server_add
[-w
] device
",
1469 .help = "export a block device via NBD
",
1470 .mhandler.cmd = hmp_nbd_server_add,
1473 @item nbd_server_add @var{device}
1474 @findex nbd_server_add
1475 Export a block device through QEMU's NBD server, which must be started
1476 beforehand with @command{nbd_server_start}. The @option{-w} option makes the
1477 exported device writable too.
1481 .name = "nbd_server_stop
",
1483 .params = "nbd_server_stop
",
1484 .help = "stop serving block devices
using the NBD protocol
",
1485 .mhandler.cmd = hmp_nbd_server_stop,
1488 @item nbd_server_stop
1489 @findex nbd_server_stop
1490 Stop the QEMU embedded NBD server.
1494 #if defined(TARGET_I386)
1498 .args_type = "broadcast
:-b
,cpu_index
:i
,bank
:i
,status
:l
,mcg_status
:l
,addr
:l
,misc
:l
",
1499 .params = "[-b
] cpu bank status mcgstatus addr misc
",
1500 .help = "inject a MCE on the given CPU
[and broadcast to other CPUs with
-b option
]",
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 .mhandler.cmd = hmp_getfd,
1520 @item getfd @var{fdname}
1522 If a file descriptor is passed alongside this command using the SCM_RIGHTS
1523 mechanism on unix sockets, it is stored using the name @var{fdname} for
1524 later use by other monitor commands.
1529 .args_type = "fdname
:s
",
1530 .params = "closefd name
",
1531 .help = "close a file descriptor previously passed via SCM rights
",
1532 .mhandler.cmd = hmp_closefd,
1536 @item closefd @var{fdname}
1538 Close the file descriptor previously assigned to @var{fdname} using the
1539 @code{getfd} command. This is only needed if the file descriptor was never
1540 used by another monitor command.
1544 .name = "block_passwd
",
1545 .args_type = "device
:B
,password
:s
",
1546 .params = "block_passwd device password
",
1547 .help = "set the password of encrypted block devices
",
1548 .mhandler.cmd = hmp_block_passwd,
1552 @item block_set_io_throttle @var{device} @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1553 @findex block_set_io_throttle
1554 Change I/O throttle limits for a block drive to @var{bps} @var{bps_rd} @var{bps_wr} @var{iops} @var{iops_rd} @var{iops_wr}
1558 .name = "block_set_io_throttle
",
1559 .args_type = "device
:B
,bps
:l
,bps_rd
:l
,bps_wr
:l
,iops
:l
,iops_rd
:l
,iops_wr
:l
",
1560 .params = "device bps bps_rd bps_wr iops iops_rd iops_wr
",
1561 .help = "change I
/O throttle limits
for a block drive
",
1562 .mhandler.cmd = hmp_block_set_io_throttle,
1566 @item block_passwd @var{device} @var{password}
1567 @findex block_passwd
1568 Set the encrypted device @var{device} password to @var{password}
1572 .name = "set_password
",
1573 .args_type = "protocol
:s
,password
:s
,connected
:s?
",
1574 .params = "protocol password action
-if-connected
",
1575 .help = "set spice
/vnc password
",
1576 .mhandler.cmd = hmp_set_password,
1580 @item set_password [ vnc | spice ] password [ action-if-connected ]
1581 @findex set_password
1583 Change spice/vnc password. Use zero to make the password stay valid
1584 forever. @var{action-if-connected} specifies what should happen in
1585 case a connection is established: @var{fail} makes the password change
1586 fail. @var{disconnect} changes the password and disconnects the
1587 client. @var{keep} changes the password and keeps the connection up.
1588 @var{keep} is the default.
1592 .name = "expire_password
",
1593 .args_type = "protocol
:s
,time
:s
",
1594 .params = "protocol time
",
1595 .help = "set spice
/vnc password expire
-time
",
1596 .mhandler.cmd = hmp_expire_password,
1600 @item expire_password [ vnc | spice ] expire-time
1601 @findex expire_password
1603 Specify when a password for spice/vnc becomes
1604 invalid. @var{expire-time} accepts:
1608 Invalidate password instantly.
1611 Password stays valid forever.
1614 Password stays valid for @var{nsec} seconds starting now.
1617 Password is invalidated at the given time. @var{nsec} are the seconds
1618 passed since 1970, i.e. unix epoch.
1624 .name = "chardev
-add
",
1625 .args_type = "args
:s
",
1627 .help = "add chardev
",
1628 .mhandler.cmd = hmp_chardev_add,
1629 .command_completion = chardev_add_completion,
1633 @item chardev_add args
1636 chardev_add accepts the same parameters as the -chardev command line switch.
1641 .name = "chardev
-remove
",
1642 .args_type = "id
:s
",
1644 .help = "remove chardev
",
1645 .mhandler.cmd = hmp_chardev_remove,
1646 .command_completion = chardev_remove_completion,
1650 @item chardev_remove id
1651 @findex chardev_remove
1653 Removes the chardev @var{id}.
1659 .args_type = "device
:B
,command
:s
",
1660 .params = "[device
] \"[command
]\"",
1661 .help = "run a qemu
-io command on a block device
",
1662 .mhandler.cmd = hmp_qemu_io,
1666 @item qemu-io @var{device} @var{command}
1669 Executes a qemu-io command on the given block device.
1675 .args_type = "id
:i
",
1678 .mhandler.cmd = hmp_cpu_add,
1682 @item cpu-add @var{id}
1683 Add CPU with id @var{id}
1688 .args_type = "item
:s?
",
1689 .params = "[subcommand
]",
1690 .help = "show various information about the system state
",
1691 .mhandler.cmd = do_info_help,
1692 .sub_table = info_cmds,
1696 @item info @var{subcommand}
1698 Show various information about the system state.
1702 show the version of QEMU
1704 show the various VLANs and the associated devices
1706 show the character devices
1708 show the block devices
1709 @item info blockstats
1710 show block device statistics
1711 @item info registers
1712 show the cpu registers
1714 show infos for each CPU
1716 show the command line history
1718 show the interrupts statistics (if available)
1720 show i8259 (PIC) state
1722 show emulated PCI device info
1724 show virtual to physical memory mappings (i386, SH4, SPARC, PPC, and Xtensa only)
1726 show the active virtual memory mappings (i386 only)
1728 show dynamic compiler info
1730 show NUMA information
1732 show KVM information
1734 show USB devices plugged on the virtual USB hub
1736 show all USB host devices
1738 show profiling information
1740 show information about active capturing
1741 @item info snapshots
1742 show list of VM snapshots
1744 show the current VM status (running|paused)
1746 show guest PCMCIA status
1748 show which guest mouse is receiving events
1750 show the vnc server status
1752 show the current VM name
1754 show the current VM UUID
1758 show user network stack connection states
1760 show migration status
1761 @item info migrate_capabilities
1762 show current migration capabilities
1763 @item info migrate_cache_size
1764 show current migration XBZRLE cache size
1766 show balloon information
1770 show qdev device model list
1779 @item info trace-events
1780 show available trace events and their state