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,
562 @item sendkey @var{keys}
565 Send @var{keys} to the guest. @var{keys} could be the name of the
566 key or the raw value in hexadecimal format. Use @code{-} to press
567 several keys simultaneously. Example:
572 This command is useful to send keys that your graphical user interface
573 intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
577 .name = "system_reset",
580 .help = "reset the system",
581 .mhandler.cmd = hmp_system_reset,
592 .name = "system_powerdown",
595 .help = "send system power down event",
596 .mhandler.cmd = hmp_system_powerdown,
600 @item system_powerdown
601 @findex system_powerdown
603 Power down the system (if supported).
608 .args_type = "start:i,size:i",
609 .params = "addr size",
610 .help = "compute the checksum of a memory region",
611 .mhandler.cmd = do_sum,
615 @item sum @var{addr} @var{size}
618 Compute the checksum of a memory region.
623 .args_type = "devname:s",
625 .help = "add USB device (e.g. 'host
:bus
.addr
' or 'host
:vendor_id
:product_id
')",
626 .mhandler.cmd = do_usb_add,
630 @item usb_add @var{devname}
633 Add the USB device @var{devname}. For details of available devices see
639 .args_type = "devname:s",
641 .help = "remove USB device 'bus
.addr
'",
642 .mhandler.cmd = do_usb_del,
646 @item usb_del @var{devname}
649 Remove the USB device @var{devname} from the QEMU virtual USB
650 hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
651 command @code{info usb} to see the devices you can remove.
655 .name = "device_add",
656 .args_type = "device:O",
657 .params = "driver[,prop=value][,...]",
658 .help = "add device, like -device on the command line",
659 .user_print = monitor_user_noop,
660 .mhandler.cmd_new = do_device_add,
664 @item device_add @var{config}
671 .name = "device_del",
674 .help = "remove device",
675 .mhandler.cmd = hmp_device_del,
679 @item device_del @var{id}
682 Remove device @var{id}.
687 .args_type = "index:i",
689 .help = "set the default CPU",
690 .mhandler.cmd = hmp_cpu,
694 @item cpu @var{index}
700 .name = "mouse_move",
701 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
702 .params = "dx dy [dz]",
703 .help = "send mouse move events",
704 .mhandler.cmd = do_mouse_move,
708 @item mouse_move @var{dx} @var{dy} [@var{dz}]
710 Move the active mouse to the specified coordinates @var{dx} @var{dy}
711 with optional scroll axis @var{dz}.
715 .name = "mouse_button",
716 .args_type = "button_state:i",
718 .help = "change mouse button state (1=L, 2=M, 4=R)",
719 .mhandler.cmd = do_mouse_button,
723 @item mouse_button @var{val}
725 Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
730 .args_type = "index:i",
732 .help = "set which mouse device receives events",
733 .mhandler.cmd = do_mouse_set,
737 @item mouse_set @var{index}
739 Set which mouse device receives events at given @var{index}, index
747 .name = "wavcapture",
748 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?",
749 .params = "path [frequency [bits [channels]]]",
750 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
751 .mhandler.cmd = do_wav_capture,
754 @item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
756 Capture audio into @var{filename}. Using sample rate @var{frequency}
757 bits per sample @var{bits} and number of channels @var{channels}.
761 @item Sample rate = 44100 Hz - CD quality
763 @item Number of channels = 2 - Stereo
768 .name = "stopcapture",
770 .params = "capture index",
771 .help = "stop capture",
772 .mhandler.cmd = do_stop_capture,
775 @item stopcapture @var{index}
777 Stop capture with a given @var{index}, index can be obtained with
785 .args_type = "val:l,size:i,filename:s",
786 .params = "addr size file",
787 .help = "save to disk virtual memory dump starting at 'addr
' of size 'size
'",
788 .mhandler.cmd = hmp_memsave,
792 @item memsave @var{addr} @var{size} @var{file}
794 save to disk virtual memory dump starting at @var{addr} of size @var{size}.
799 .args_type = "val:l,size:i,filename:s",
800 .params = "addr size file",
801 .help = "save to disk physical memory dump starting at 'addr
' of size 'size
'",
802 .mhandler.cmd = hmp_pmemsave,
806 @item pmemsave @var{addr} @var{size} @var{file}
808 save to disk physical memory dump starting at @var{addr} of size @var{size}.
813 .args_type = "bootdevice:s",
814 .params = "bootdevice",
815 .help = "define new values for the boot device list",
816 .mhandler.cmd = do_boot_set,
820 @item boot_set @var{bootdevicelist}
823 Define new values for the boot device list. Those values will override
824 the values specified on the command line through the @code{-boot} option.
826 The values that can be specified here depend on the machine type, but are
827 the same that can be specified in the @code{-boot} command line option.
830 #if defined(TARGET_I386) || defined(TARGET_S390X)
835 .help = "inject an NMI on all guest's CPUs
",
836 .mhandler.cmd = hmp_inject_nmi,
842 Inject an NMI (x86) or RESTART (s390x) on the given CPU.
847 .name = "ringbuf_write
",
848 .args_type = "device
:s
,data
:s
",
849 .params = "device data
",
850 .help = "Write to a ring buffer character device
",
851 .mhandler.cmd = hmp_ringbuf_write,
855 @item ringbuf_write @var{device} @var{data}
856 @findex ringbuf_write
857 Write @var{data} to ring buffer character device @var{device}.
858 @var{data} must be a UTF-8 string.
863 .name = "ringbuf_read
",
864 .args_type = "device
:s
,size
:i
",
865 .params = "device size
",
866 .help = "Read from a ring buffer character device
",
867 .mhandler.cmd = hmp_ringbuf_read,
871 @item ringbuf_read @var{device}
873 Read and print up to @var{size} bytes from ring buffer character
875 Certain non-printable characters are printed \uXXXX, where XXXX is the
876 character code in hexadecimal. Character \ is printed \\.
877 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
878 NUL characters, after the ring buffer lost data, and when reading
879 stops because the size limit is reached.
885 .args_type = "detach
:-d
,blk
:-b
,inc
:-i
,uri
:s
",
886 .params = "[-d
] [-b
] [-i
] uri
",
887 .help = "migrate to
URI (using -d to not wait
for completion
)"
888 "\n\t\t\t -b
for migration without shared storage with
"
889 " full copy of disk
\n\t\t\t -i
for migration without
"
890 "shared storage with incremental copy of disk
"
891 "(base image shared between src and destination
)",
892 .mhandler.cmd = hmp_migrate,
897 @item migrate [-d] [-b] [-i] @var{uri}
899 Migrate to @var{uri} (using -d to not wait for completion).
900 -b for migration with full copy of disk
901 -i for migration with incremental copy of disk (base image is shared)
905 .name = "migrate_cancel
",
908 .help = "cancel the current VM migration
",
909 .mhandler.cmd = hmp_migrate_cancel,
914 @findex migrate_cancel
915 Cancel the current VM migration.
920 .name = "migrate_set_cache_size
",
921 .args_type = "value
:o
",
923 .help = "set cache
size (in bytes
) for XBZRLE migrations
,"
924 "the cache size will be rounded down to the nearest
"
926 "The cache size affects the number of cache misses
."
927 "In
case of a high cache miss ratio you need to increase
"
929 .mhandler.cmd = hmp_migrate_set_cache_size,
933 @item migrate_set_cache_size @var{value}
934 @findex migrate_set_cache_size
935 Set cache size to @var{value} (in bytes) for xbzrle migrations.
939 .name = "migrate_set_speed
",
940 .args_type = "value
:o
",
942 .help = "set maximum
speed (in bytes
) for migrations
. "
943 "Defaults to MB
if no size suffix is specified
, ie
. B
/K
/M
/G
/T
",
944 .mhandler.cmd = hmp_migrate_set_speed,
948 @item migrate_set_speed @var{value}
949 @findex migrate_set_speed
950 Set maximum speed to @var{value} (in bytes) for migrations.
954 .name = "migrate_set_downtime
",
955 .args_type = "value
:T
",
957 .help = "set maximum tolerated
downtime (in seconds
) for migrations
",
958 .mhandler.cmd = hmp_migrate_set_downtime,
962 @item migrate_set_downtime @var{second}
963 @findex migrate_set_downtime
964 Set maximum tolerated downtime (in seconds) for migration.
968 .name = "migrate_set_capability
",
969 .args_type = "capability
:s
,state
:b
",
970 .params = "capability state
",
971 .help = "Enable
/Disable the usage of a capability
for migration
",
972 .mhandler.cmd = hmp_migrate_set_capability,
976 @item migrate_set_capability @var{capability} @var{state}
977 @findex migrate_set_capability
978 Enable/Disable the usage of a capability @var{capability} for migration.
982 .name = "client_migrate_info
",
983 .args_type = "protocol
:s
,hostname
:s
,port
:i?
,tls
-port
:i?
,cert
-subject
:s?
",
984 .params = "protocol hostname port tls
-port cert
-subject
",
985 .help = "send migration info to spice
/vnc client
",
986 .user_print = monitor_user_noop,
987 .mhandler.cmd_async = client_migrate_info,
988 .flags = MONITOR_CMD_ASYNC,
992 @item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
993 @findex client_migrate_info
994 Set the spice/vnc connection info for the migration target. The spice/vnc
995 server will ask the spice/vnc client to automatically reconnect using the
996 new parameters (if specified) once the vm migration finished successfully.
1000 .name = "dump
-guest
-memory
",
1001 .args_type = "paging
:-p
,filename
:F
,begin
:i?
,length
:i?
",
1002 .params = "[-p
] filename
[begin
] [length
]",
1003 .help = "dump guest memory to file
"
1004 "\n\t\t\t begin(optional
): the starting physical address
"
1005 "\n\t\t\t length(optional
): the memory size
, in bytes
",
1006 .mhandler.cmd = hmp_dump_guest_memory,
1011 @item dump-guest-memory [-p] @var{protocol} @var{begin} @var{length}
1012 @findex dump-guest-memory
1013 Dump guest memory to @var{protocol}. The file can be processed with crash or
1015 filename: dump file name
1016 paging: do paging to get guest's memory mapping
1017 begin: the starting physical address. It's optional, and should be
1018 specified with length together.
1019 length: the memory size, in bytes. It's optional, and should be specified
1020 with begin together.
1024 .name = "snapshot_blkdev
",
1025 .args_type = "reuse
:-n
,device
:B
,snapshot
-file
:s?
,format
:s?
",
1026 .params = "[-n
] device
[new-image
-file
] [format
]",
1027 .help = "initiates a live snapshot
\n\t\t\t"
1028 "of device
. If a
new image file is specified
, the
\n\t\t\t"
1029 "new image file will become the
new root image
.\n\t\t\t"
1030 "If format is specified
, the snapshot file will
\n\t\t\t"
1031 "be created
in that format
.\n\t\t\t"
1032 "The
default format is qcow2
. The
-n flag requests QEMU
\n\t\t\t"
1033 "to reuse the image found
in new-image
-file
, instead of
\n\t\t\t"
1034 "recreating it from scratch
.",
1035 .mhandler.cmd = hmp_snapshot_blkdev,
1039 @item snapshot_blkdev
1040 @findex snapshot_blkdev
1041 Snapshot device, using snapshot file as target if provided
1045 .name = "snapshot_blkdev_internal
",
1046 .args_type = "device
:B
,name
:s
",
1047 .params = "device name
",
1048 .help = "take an internal snapshot of device
.\n\t\t\t"
1049 "The format of the image used by device must
\n\t\t\t"
1050 "support it
, such as qcow2
.\n\t\t\t",
1051 .mhandler.cmd = hmp_snapshot_blkdev_internal,
1055 @item snapshot_blkdev_internal
1056 @findex snapshot_blkdev_internal
1057 Take an internal snapshot on device if it support
1061 .name = "snapshot_delete_blkdev_internal
",
1062 .args_type = "device
:B
,name
:s
,id
:s?
",
1063 .params = "device name
[id
]",
1064 .help = "delete an internal snapshot of device
.\n\t\t\t"
1065 "If id is specified
, qemu will
try delete
\n\t\t\t"
1066 "the snapshot matching both id and name
.\n\t\t\t"
1067 "The format of the image used by device must
\n\t\t\t"
1068 "support it
, such as qcow2
.\n\t\t\t",
1069 .mhandler.cmd = hmp_snapshot_delete_blkdev_internal,
1073 @item snapshot_delete_blkdev_internal
1074 @findex snapshot_delete_blkdev_internal
1075 Delete an internal snapshot on device if it support
1079 .name = "drive_mirror
",
1080 .args_type = "reuse
:-n
,full
:-f
,device
:B
,target
:s
,format
:s?
",
1081 .params = "[-n
] [-f
] device target
[format
]",
1082 .help = "initiates live storage
\n\t\t\t"
1083 "migration
for a device
. The device
's contents are\n\t\t\t"
1084 "copied to the new image file, including data that\n\t\t\t"
1085 "is written after the command is started.\n\t\t\t"
1086 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1087 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1088 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1089 "so that the result does not need a backing file.\n\t\t\t",
1090 .mhandler.cmd = hmp_drive_mirror,
1094 @findex drive_mirror
1095 Start mirroring a block device's writes to a
new destination
,
1096 using the specified target
.
1100 .name
= "drive_backup",
1101 .args_type
= "reuse:-n,full:-f,device:B,target:s,format:s?",
1102 .params
= "[-n] [-f] device target [format]",
1103 .help
= "initiates a point-in-time\n\t\t\t"
1104 "copy for a device. The device's contents are\n\t\t\t"
1105 "copied to the new image file, excluding data that\n\t\t\t"
1106 "is written after the command is started.\n\t\t\t"
1107 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1108 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1109 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1110 "so that the result does not need a backing file.\n\t\t\t",
1111 .mhandler
.cmd
= hmp_drive_backup
,
1115 @findex drive_backup
1116 Start a point
-in-time copy of a block device to a specificed target
.
1120 .name
= "drive_add",
1121 .args_type
= "pci_addr:s,opts:s",
1122 .params
= "[[<domain>:]<bus>:]<slot>\n"
1123 "[file=file][,if=type][,bus=n]\n"
1124 "[,unit=m][,media=d][,index=i]\n"
1125 "[,cyls=c,heads=h,secs=s[,trans=t]]\n"
1126 "[,snapshot=on|off][,cache=on|off]\n"
1127 "[,readonly=on|off][,copy-on-read=on|off]",
1128 .help
= "add drive to PCI storage controller",
1129 .mhandler
.cmd
= drive_hot_add
,
1135 Add drive to PCI storage controller
.
1138 #
if defined(CONFIG_PCI_HOTPLUG_OLD
)
1141 .args_type
= "pci_addr:s,type:s,opts:s?",
1142 .params
= "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...",
1143 .help
= "hot-add PCI device",
1144 .mhandler
.cmd
= pci_device_hot_add
,
1154 #
if defined(CONFIG_PCI_HOTPLUG_OLD
)
1157 .args_type
= "pci_addr:s",
1158 .params
= "[[<domain>:]<bus>:]<slot>",
1159 .help
= "hot remove PCI device",
1160 .mhandler
.cmd
= do_pci_device_hot_remove
,
1167 Hot remove PCI device
.
1171 .name
= "pcie_aer_inject_error",
1172 .args_type
= "advisory_non_fatal:-a,correctable:-c,"
1173 "id:s,error_status:s,"
1174 "header0:i?,header1:i?,header2:i?,header3:i?,"
1175 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1176 .params
= "[-a] [-c] id "
1177 "<error_status> [<tlp header> [<tlp header prefix>]]",
1178 .help
= "inject pcie aer error\n\t\t\t"
1179 " -a for advisory non fatal error\n\t\t\t"
1180 " -c for correctable error\n\t\t\t"
1181 "<id> = qdev device id\n\t\t\t"
1182 "<error_status> = error string or 32bit\n\t\t\t"
1183 "<tlb header> = 32bit x 4\n\t\t\t"
1184 "<tlb header prefix> = 32bit x 4",
1185 .user_print
= pcie_aer_inject_error_print
,
1186 .mhandler
.cmd_new
= do_pcie_aer_inject_error
,
1190 @item pcie_aer_inject_error
1191 @findex pcie_aer_inject_error
1192 Inject PCIe AER error
1196 .name
= "host_net_add",
1197 .args_type
= "device:s,opts:s?",
1198 .params
= "tap|user|socket|vde|netmap|dump [options]",
1199 .help
= "add host VLAN client",
1200 .mhandler
.cmd
= net_host_device_add
,
1205 @findex host_net_add
1206 Add host VLAN client
.
1210 .name
= "host_net_remove",
1211 .args_type
= "vlan_id:i,device:s",
1212 .params
= "vlan_id name",
1213 .help
= "remove host VLAN client",
1214 .mhandler
.cmd
= net_host_device_remove
,
1218 @item host_net_remove
1219 @findex host_net_remove
1220 Remove host VLAN client
.
1224 .name
= "netdev_add",
1225 .args_type
= "netdev:O",
1226 .params
= "[user|tap|socket|hubport|netmap],id=str[,prop=value][,...]",
1227 .help
= "add host network device",
1228 .mhandler
.cmd
= hmp_netdev_add
,
1234 Add host network device
.
1238 .name
= "netdev_del",
1239 .args_type
= "id:s",
1241 .help
= "remove host network device",
1242 .mhandler
.cmd
= hmp_netdev_del
,
1248 Remove host network device
.
1252 .name
= "object_add",
1253 .args_type
= "object:O",
1254 .params
= "[qom-type=]type,id=str[,prop=value][,...]",
1255 .help
= "create QOM object",
1256 .mhandler
.cmd
= hmp_object_add
,
1266 .name
= "object_del",
1267 .args_type
= "id:s",
1269 .help
= "destroy QOM object",
1270 .mhandler
.cmd
= hmp_object_del
,
1281 .name
= "hostfwd_add",
1282 .args_type
= "arg1:s,arg2:s?,arg3:s?",
1283 .params
= "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1284 .help
= "redirect TCP or UDP connections from host to guest (requires -net user)",
1285 .mhandler
.cmd
= net_slirp_hostfwd_add
,
1291 Redirect TCP or UDP connections from host to
guest (requires
-net user
).
1296 .name
= "hostfwd_remove",
1297 .args_type
= "arg1:s,arg2:s?,arg3:s?",
1298 .params
= "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
1299 .help
= "remove host-to-guest TCP or UDP redirection",
1300 .mhandler
.cmd
= net_slirp_hostfwd_remove
,
1305 @item hostfwd_remove
1306 @findex hostfwd_remove
1307 Remove host
-to
-guest TCP or UDP redirection
.
1312 .args_type
= "value:M",
1314 .help
= "request VM to change its memory allocation (in MB)",
1315 .mhandler
.cmd
= hmp_balloon
,
1319 @item balloon @
var{value
}
1321 Request VM to change its memory allocation to @
var{value
} (in MB
).
1326 .args_type
= "name:s,up:b",
1327 .params
= "name on|off",
1328 .help
= "change the link status of a network adapter",
1329 .mhandler
.cmd
= hmp_set_link
,
1333 @item set_link @
var{name
} [on|off
]
1335 Switch link @
var{name
} on (i
.e
. up
) or
off (i
.e
. down
).
1339 .name
= "watchdog_action",
1340 .args_type
= "action:s",
1341 .params
= "[reset|shutdown|poweroff|pause|debug|none]",
1342 .help
= "change watchdog action",
1343 .mhandler
.cmd
= do_watchdog_action
,
1347 @item watchdog_action
1348 @findex watchdog_action
1349 Change watchdog action
.
1354 .args_type
= "aclname:s",
1355 .params
= "aclname",
1356 .help
= "list rules in the access control list",
1357 .mhandler
.cmd
= do_acl_show
,
1361 @item acl_show @
var{aclname
}
1363 List all the matching rules
in the access control list
, and the
default
1364 policy
. There are currently two named access control lists
,
1365 @
var{vnc
.x509dname
} and @
var{vnc
.username
} matching on the x509 client
1366 certificate distinguished name
, and SASL username respectively
.
1370 .name
= "acl_policy",
1371 .args_type
= "aclname:s,policy:s",
1372 .params
= "aclname allow|deny",
1373 .help
= "set default access control list policy",
1374 .mhandler
.cmd
= do_acl_policy
,
1378 @item acl_policy @
var{aclname
} @code
{allow|deny
}
1380 Set the
default access control list policy
, used
in the event that
1381 none of the explicit rules match
. The
default policy at startup is
1387 .args_type
= "aclname:s,match:s,policy:s,index:i?",
1388 .params
= "aclname match allow|deny [index]",
1389 .help
= "add a match rule to the access control list",
1390 .mhandler
.cmd
= do_acl_add
,
1394 @item acl_add @
var{aclname
} @
var{match
} @code
{allow|deny
} [@
var{index
}]
1396 Add a match rule to the access control list
, allowing or denying access
.
1397 The match will normally be an exact username or x509 distinguished name
,
1398 but can optionally include wildcard globs
. eg @code
{*@@EXAMPLE
.COM
} to
1399 allow all users
in the @code
{EXAMPLE
.COM
} kerberos realm
. The match will
1400 normally be appended to the end of the ACL
, but can be inserted
1401 earlier
in the list
if the optional @
var{index
} parameter is supplied
.
1405 .name
= "acl_remove",
1406 .args_type
= "aclname:s,match:s",
1407 .params
= "aclname match",
1408 .help
= "remove a match rule from the access control list",
1409 .mhandler
.cmd
= do_acl_remove
,
1413 @item acl_remove @
var{aclname
} @
var{match
}
1415 Remove the specified match rule from the access control list
.
1419 .name
= "acl_reset",
1420 .args_type
= "aclname:s",
1421 .params
= "aclname",
1422 .help
= "reset the access control list",
1423 .mhandler
.cmd
= do_acl_reset
,
1427 @item acl_reset @
var{aclname
}
1429 Remove all matches from the access control list
, and set the
default
1430 policy back to @code
{deny
}.
1434 .name
= "nbd_server_start",
1435 .args_type
= "all:-a,writable:-w,uri:s",
1436 .params
= "nbd_server_start [-a] [-w] host:port",
1437 .help
= "serve block devices on the given host and port",
1438 .mhandler
.cmd
= hmp_nbd_server_start
,
1441 @item nbd_server_start @
var{host
}:@
var{port
}
1442 @findex nbd_server_start
1443 Start an NBD server on the given host and
/or port
. If the @option
{-a
}
1444 option is included
, all of the virtual machine
's block devices that
1445 have an inserted media on them are automatically exported; in this case,
1446 the @option{-w} option makes the devices writable too.
1450 .name = "nbd_server_add",
1451 .args_type = "writable:-w,device:B",
1452 .params = "nbd_server_add [-w] device",
1453 .help = "export a block device via NBD",
1454 .mhandler.cmd = hmp_nbd_server_add,
1457 @item nbd_server_add @var{device}
1458 @findex nbd_server_add
1459 Export a block device through QEMU's NBD server
, which must be started
1460 beforehand with @command
{nbd_server_start
}. The @option
{-w
} option makes the
1461 exported device writable too
.
1465 .name
= "nbd_server_stop",
1467 .params
= "nbd_server_stop",
1468 .help
= "stop serving block devices using the NBD protocol",
1469 .mhandler
.cmd
= hmp_nbd_server_stop
,
1472 @item nbd_server_stop
1473 @findex nbd_server_stop
1474 Stop the QEMU embedded NBD server
.
1478 #
if defined(TARGET_I386
)
1482 .args_type
= "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1483 .params
= "[-b] cpu bank status mcgstatus addr misc",
1484 .help
= "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1485 .mhandler
.cmd
= do_inject_mce
,
1490 @item mce @
var{cpu
} @
var{bank
} @
var{status
} @
var{mcgstatus
} @
var{addr
} @
var{misc
}
1492 Inject an MCE on the given
CPU (x86 only
).
1497 .args_type
= "fdname:s",
1498 .params
= "getfd name",
1499 .help
= "receive a file descriptor via SCM rights and assign it a name",
1500 .mhandler
.cmd
= hmp_getfd
,
1504 @item getfd @
var{fdname
}
1506 If a file descriptor is passed alongside
this command
using the SCM_RIGHTS
1507 mechanism on unix sockets
, it is stored
using the name @
var{fdname
} for
1508 later use by other monitor commands
.
1513 .args_type
= "fdname:s",
1514 .params
= "closefd name",
1515 .help
= "close a file descriptor previously passed via SCM rights",
1516 .mhandler
.cmd
= hmp_closefd
,
1520 @item closefd @
var{fdname
}
1522 Close the file descriptor previously assigned to @
var{fdname
} using the
1523 @code
{getfd
} command
. This is only needed
if the file descriptor was
never
1524 used by another monitor command
.
1528 .name
= "block_passwd",
1529 .args_type
= "device:B,password:s",
1530 .params
= "block_passwd device password",
1531 .help
= "set the password of encrypted block devices",
1532 .mhandler
.cmd
= hmp_block_passwd
,
1536 @item block_set_io_throttle @
var{device
} @
var{bps
} @
var{bps_rd
} @
var{bps_wr
} @
var{iops
} @
var{iops_rd
} @
var{iops_wr
}
1537 @findex block_set_io_throttle
1538 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
}
1542 .name
= "block_set_io_throttle",
1543 .args_type
= "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1544 .params
= "device bps bps_rd bps_wr iops iops_rd iops_wr",
1545 .help
= "change I/O throttle limits for a block drive",
1546 .mhandler
.cmd
= hmp_block_set_io_throttle
,
1550 @item block_passwd @
var{device
} @
var{password
}
1551 @findex block_passwd
1552 Set the encrypted device @
var{device
} password to @
var{password
}
1556 .name
= "set_password",
1557 .args_type
= "protocol:s,password:s,connected:s?",
1558 .params
= "protocol password action-if-connected",
1559 .help
= "set spice/vnc password",
1560 .mhandler
.cmd
= hmp_set_password
,
1564 @item set_password
[ vnc | spice
] password
[ action
-if-connected
]
1565 @findex set_password
1567 Change spice
/vnc password
. Use zero to make the password stay valid
1568 forever
. @
var{action
-if-connected
} specifies what should happen
in
1569 case a connection is established
: @
var{fail
} makes the password change
1570 fail
. @
var{disconnect
} changes the password and disconnects the
1571 client
. @
var{keep
} changes the password and keeps the connection up
.
1572 @
var{keep
} is the
default.
1576 .name
= "expire_password",
1577 .args_type
= "protocol:s,time:s",
1578 .params
= "protocol time",
1579 .help
= "set spice/vnc password expire-time",
1580 .mhandler
.cmd
= hmp_expire_password
,
1584 @item expire_password
[ vnc | spice
] expire
-time
1585 @findex expire_password
1587 Specify when a password
for spice
/vnc becomes
1588 invalid
. @
var{expire
-time
} accepts
:
1592 Invalidate password instantly
.
1595 Password stays valid forever
.
1598 Password stays valid
for @
var{nsec
} seconds starting now
.
1601 Password is invalidated at the given time
. @
var{nsec
} are the seconds
1602 passed since
1970, i
.e
. unix epoch
.
1608 .name
= "chardev-add",
1609 .args_type
= "args:s",
1611 .help
= "add chardev",
1612 .mhandler
.cmd
= hmp_chardev_add
,
1616 @item chardev_add args
1619 chardev_add accepts the same parameters as the
-chardev command line
switch.
1624 .name
= "chardev-remove",
1625 .args_type
= "id:s",
1627 .help
= "remove chardev",
1628 .mhandler
.cmd
= hmp_chardev_remove
,
1632 @item chardev_remove id
1633 @findex chardev_remove
1635 Removes the chardev @
var{id
}.
1641 .args_type
= "device:B,command:s",
1642 .params
= "[device] \"[command]\"",
1643 .help
= "run a qemu-io command on a block device",
1644 .mhandler
.cmd
= hmp_qemu_io
,
1648 @item qemu
-io @
var{device
} @
var{command
}
1651 Executes a qemu
-io command on the given block device
.
1657 .args_type
= "id:i",
1660 .mhandler
.cmd
= hmp_cpu_add
,
1664 @item cpu
-add @
var{id
}
1665 Add CPU with id @
var{id
}
1670 .args_type
= "item:s?",
1671 .params
= "[subcommand]",
1672 .help
= "show various information about the system state",
1673 .mhandler
.cmd
= do_info_help
,
1674 .sub_table
= info_cmds
,
1678 @item info @
var{subcommand
}
1680 Show various information about the system state
.
1684 show the version of QEMU
1686 show the various VLANs and the associated devices
1688 show the character devices
1690 show the block devices
1691 @item info blockstats
1692 show block device statistics
1693 @item info registers
1694 show the cpu registers
1696 show infos
for each CPU
1698 show the command line history
1700 show the interrupts
statistics (if available
)
1702 show
i8259 (PIC
) state
1704 show emulated PCI device info
1706 show virtual to physical memory
mappings (i386
, SH4
, SPARC
, PPC
, and Xtensa only
)
1708 show the active virtual memory
mappings (i386 only
)
1710 show
dynamic compiler info
1712 show NUMA information
1714 show KVM information
1716 show USB devices plugged on the virtual USB hub
1718 show all USB host devices
1720 show profiling information
1722 show information about active capturing
1723 @item info snapshots
1724 show list of VM snapshots
1726 show the current VM
status (running|paused
)
1728 show guest PCMCIA status
1730 show which guest mouse is receiving events
1732 show the vnc server status
1734 show the current VM name
1736 show the current VM UUID
1740 show user network stack connection states
1742 show migration status
1743 @item info migrate_capabilities
1744 show current migration capabilities
1745 @item info migrate_cache_size
1746 show current migration XBZRLE cache size
1748 show balloon information
1752 show qdev device model list
1761 @item info
trace-events
1762 show available
trace events and their state