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,
338 .command_completion = loadvm_completion,
342 @item loadvm @var{tag}|@var{id}
344 Set the whole virtual machine to the snapshot identified by the tag
345 @var{tag} or the unique snapshot ID @var{id}.
350 .args_type = "name:s",
352 .help = "delete a VM snapshot from its tag or id",
353 .mhandler.cmd = do_delvm,
354 .command_completion = delvm_completion,
358 @item delvm @var{tag}|@var{id}
360 Delete the snapshot identified by @var{tag} or @var{id}.
364 .name = "singlestep",
365 .args_type = "option:s?",
366 .params = "[on|off]",
367 .help = "run emulation in singlestep mode or switch to normal mode",
368 .mhandler.cmd = do_singlestep,
372 @item singlestep [off]
374 Run the emulation in single step mode.
375 If called with option off, the emulation returns to normal mode.
382 .help = "stop emulation",
383 .mhandler.cmd = hmp_stop,
396 .help = "resume emulation",
397 .mhandler.cmd = hmp_cont,
407 .name = "system_wakeup",
410 .help = "wakeup guest from suspend",
411 .mhandler.cmd = hmp_system_wakeup,
416 @findex system_wakeup
417 Wakeup guest from suspend.
422 .args_type = "device:s?",
423 .params = "[device]",
424 .help = "start gdbserver on given device (default 'tcp
::1234'), stop with 'none
'",
425 .mhandler.cmd = do_gdbserver,
429 @item gdbserver [@var{port}]
431 Start gdbserver session (default @var{port}=1234)
436 .args_type = "fmt:/,addr:l",
437 .params = "/fmt addr",
438 .help = "virtual memory dump starting at 'addr
'",
439 .mhandler.cmd = do_memory_dump,
443 @item x/fmt @var{addr}
445 Virtual memory dump starting at @var{addr}.
450 .args_type = "fmt:/,addr:l",
451 .params = "/fmt addr",
452 .help = "physical memory dump starting at 'addr
'",
453 .mhandler.cmd = do_physical_memory_dump,
457 @item xp /@var{fmt} @var{addr}
459 Physical memory dump starting at @var{addr}.
461 @var{fmt} is a format which tells the command how to format the
462 data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
466 is the number of items to be dumped.
469 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
470 c (char) or i (asm instruction).
473 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
474 @code{h} or @code{w} can be specified with the @code{i} format to
475 respectively select 16 or 32 bit code instruction size.
482 Dump 10 instructions at the current instruction pointer:
487 0x90107065: lea 0x0(%esi,1),%esi
488 0x90107069: lea 0x0(%edi,1),%edi
490 0x90107071: jmp 0x90107080
498 Dump 80 16 bit values at the start of the video memory.
500 (qemu) xp/80hx 0xb8000
501 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
502 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
503 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
504 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
505 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
506 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
507 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
508 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
509 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
510 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
517 .args_type = "fmt:/,val:l",
518 .params = "/fmt expr",
519 .help = "print expression value (use $reg for CPU register access)",
520 .mhandler.cmd = do_print,
524 @item p or print/@var{fmt} @var{expr}
527 Print expression value. Only the @var{format} part of @var{fmt} is
533 .args_type = "fmt:/,addr:i,index:i.",
534 .params = "/fmt addr",
535 .help = "I/O port read",
536 .mhandler.cmd = do_ioport_read,
545 .args_type = "fmt:/,addr:i,val:i",
546 .params = "/fmt addr value",
547 .help = "I/O port write",
548 .mhandler.cmd = do_ioport_write,
557 .args_type = "keys:s,hold-time:i?",
558 .params = "keys [hold_ms]",
559 .help = "send keys to the VM (e.g. 'sendkey ctrl
-alt
-f1
', default hold time=100 ms)",
560 .mhandler.cmd = hmp_send_key,
561 .command_completion = sendkey_completion,
565 @item sendkey @var{keys}
568 Send @var{keys} to the guest. @var{keys} could be the name of the
569 key or the raw value in hexadecimal format. Use @code{-} to press
570 several keys simultaneously. Example:
575 This command is useful to send keys that your graphical user interface
576 intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
580 .name = "system_reset",
583 .help = "reset the system",
584 .mhandler.cmd = hmp_system_reset,
595 .name = "system_powerdown",
598 .help = "send system power down event",
599 .mhandler.cmd = hmp_system_powerdown,
603 @item system_powerdown
604 @findex system_powerdown
606 Power down the system (if supported).
611 .args_type = "start:i,size:i",
612 .params = "addr size",
613 .help = "compute the checksum of a memory region",
614 .mhandler.cmd = do_sum,
618 @item sum @var{addr} @var{size}
621 Compute the checksum of a memory region.
626 .args_type = "devname:s",
628 .help = "add USB device (e.g. 'host
:bus
.addr
' or 'host
:vendor_id
:product_id
')",
629 .mhandler.cmd = do_usb_add,
633 @item usb_add @var{devname}
636 Add the USB device @var{devname}. For details of available devices see
642 .args_type = "devname:s",
644 .help = "remove USB device 'bus
.addr
'",
645 .mhandler.cmd = do_usb_del,
649 @item usb_del @var{devname}
652 Remove the USB device @var{devname} from the QEMU virtual USB
653 hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
654 command @code{info usb} to see the devices you can remove.
658 .name = "device_add",
659 .args_type = "device:O",
660 .params = "driver[,prop=value][,...]",
661 .help = "add device, like -device on the command line",
662 .user_print = monitor_user_noop,
663 .mhandler.cmd_new = do_device_add,
664 .command_completion = device_add_completion,
668 @item device_add @var{config}
675 .name = "device_del",
678 .help = "remove device",
679 .mhandler.cmd = hmp_device_del,
680 .command_completion = device_del_completion,
684 @item device_del @var{id}
687 Remove device @var{id}.
692 .args_type = "index:i",
694 .help = "set the default CPU",
695 .mhandler.cmd = hmp_cpu,
699 @item cpu @var{index}
705 .name = "mouse_move",
706 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
707 .params = "dx dy [dz]",
708 .help = "send mouse move events",
709 .mhandler.cmd = do_mouse_move,
713 @item mouse_move @var{dx} @var{dy} [@var{dz}]
715 Move the active mouse to the specified coordinates @var{dx} @var{dy}
716 with optional scroll axis @var{dz}.
720 .name = "mouse_button",
721 .args_type = "button_state:i",
723 .help = "change mouse button state (1=L, 2=M, 4=R)",
724 .mhandler.cmd = do_mouse_button,
728 @item mouse_button @var{val}
730 Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
735 .args_type = "index:i",
737 .help = "set which mouse device receives events",
738 .mhandler.cmd = do_mouse_set,
742 @item mouse_set @var{index}
744 Set which mouse device receives events at given @var{index}, index
752 .name = "wavcapture",
753 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?",
754 .params = "path [frequency [bits [channels]]]",
755 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
756 .mhandler.cmd = do_wav_capture,
759 @item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
761 Capture audio into @var{filename}. Using sample rate @var{frequency}
762 bits per sample @var{bits} and number of channels @var{channels}.
766 @item Sample rate = 44100 Hz - CD quality
768 @item Number of channels = 2 - Stereo
773 .name = "stopcapture",
775 .params = "capture index",
776 .help = "stop capture",
777 .mhandler.cmd = do_stop_capture,
780 @item stopcapture @var{index}
782 Stop capture with a given @var{index}, index can be obtained with
790 .args_type = "val:l,size:i,filename:s",
791 .params = "addr size file",
792 .help = "save to disk virtual memory dump starting at 'addr
' of size 'size
'",
793 .mhandler.cmd = hmp_memsave,
797 @item memsave @var{addr} @var{size} @var{file}
799 save to disk virtual memory dump starting at @var{addr} of size @var{size}.
804 .args_type = "val:l,size:i,filename:s",
805 .params = "addr size file",
806 .help = "save to disk physical memory dump starting at 'addr
' of size 'size
'",
807 .mhandler.cmd = hmp_pmemsave,
811 @item pmemsave @var{addr} @var{size} @var{file}
813 save to disk physical memory dump starting at @var{addr} of size @var{size}.
818 .args_type = "bootdevice:s",
819 .params = "bootdevice",
820 .help = "define new values for the boot device list",
821 .mhandler.cmd = do_boot_set,
825 @item boot_set @var{bootdevicelist}
828 Define new values for the boot device list. Those values will override
829 the values specified on the command line through the @code{-boot} option.
831 The values that can be specified here depend on the machine type, but are
832 the same that can be specified in the @code{-boot} command line option.
839 .help = "inject an NMI",
840 .mhandler.cmd = hmp_inject_nmi,
845 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
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,
855 .command_completion = ringbuf_write_completion,
859 @item ringbuf_write @var{device} @var{data}
860 @findex ringbuf_write
861 Write @var{data} to ring buffer character device @var{device}.
862 @var{data} must be a UTF-8 string.
867 .name = "ringbuf_read",
868 .args_type = "device:s,size:i",
869 .params = "device size",
870 .help = "Read from a ring buffer character device",
871 .mhandler.cmd = hmp_ringbuf_read,
872 .command_completion = ringbuf_write_completion,
876 @item ringbuf_read @var{device}
878 Read and print up to @var{size} bytes from ring buffer character
880 Certain non-printable characters are printed \uXXXX, where XXXX is the
881 character code in hexadecimal. Character \ is printed \\.
882 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
883 NUL characters, after the ring buffer lost data, and when reading
884 stops because the size limit is reached.
890 .args_type = "detach:-d,blk:-b,inc:-i,uri:s",
891 .params = "[-d] [-b] [-i] uri",
892 .help = "migrate to URI (using -d to not wait for completion)"
893 "\n\t\t\t -b for migration without shared storage with"
894 " full copy of disk\n\t\t\t -i for migration without "
895 "shared storage with incremental copy of disk "
896 "(base image shared between src and destination)",
897 .mhandler.cmd = hmp_migrate,
902 @item migrate [-d] [-b] [-i] @var{uri}
904 Migrate to @var{uri} (using -d to not wait for completion).
905 -b for migration with full copy of disk
906 -i for migration with incremental copy of disk (base image is shared)
910 .name = "migrate_cancel",
913 .help = "cancel the current VM migration",
914 .mhandler.cmd = hmp_migrate_cancel,
919 @findex migrate_cancel
920 Cancel the current VM migration.
925 .name = "migrate_set_cache_size",
926 .args_type = "value:o",
928 .help = "set cache size (in bytes) for XBZRLE migrations,"
929 "the cache size will be rounded down to the nearest "
931 "The cache size affects the number of cache misses."
932 "In case of a high cache miss ratio you need to increase"
934 .mhandler.cmd = hmp_migrate_set_cache_size,
938 @item migrate_set_cache_size @var{value}
939 @findex migrate_set_cache_size
940 Set cache size to @var{value} (in bytes) for xbzrle migrations.
944 .name = "migrate_set_speed",
945 .args_type = "value:o",
947 .help = "set maximum speed (in bytes) for migrations. "
948 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
949 .mhandler.cmd = hmp_migrate_set_speed,
953 @item migrate_set_speed @var{value}
954 @findex migrate_set_speed
955 Set maximum speed to @var{value} (in bytes) for migrations.
959 .name = "migrate_set_downtime",
960 .args_type = "value:T",
962 .help = "set maximum tolerated downtime (in seconds) for migrations",
963 .mhandler.cmd = hmp_migrate_set_downtime,
967 @item migrate_set_downtime @var{second}
968 @findex migrate_set_downtime
969 Set maximum tolerated downtime (in seconds) for migration.
973 .name = "migrate_set_capability",
974 .args_type = "capability:s,state:b",
975 .params = "capability state",
976 .help = "Enable/Disable the usage of a capability for migration",
977 .mhandler.cmd = hmp_migrate_set_capability,
978 .command_completion = migrate_set_capability_completion,
982 @item migrate_set_capability @var{capability} @var{state}
983 @findex migrate_set_capability
984 Enable/Disable the usage of a capability @var{capability} for migration.
988 .name = "client_migrate_info",
989 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
990 .params = "protocol hostname port tls-port cert-subject",
991 .help = "send migration info to spice/vnc client",
992 .user_print = monitor_user_noop,
993 .mhandler.cmd_async = client_migrate_info,
994 .flags = MONITOR_CMD_ASYNC,
998 @item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
999 @findex client_migrate_info
1000 Set the spice/vnc connection info for the migration target. The spice/vnc
1001 server will ask the spice/vnc client to automatically reconnect using the
1002 new parameters (if specified) once the vm migration finished successfully.
1006 .name = "dump-guest-memory",
1007 .args_type = "paging:-p,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:i?,length:i?",
1008 .params = "[-p] [-z|-l|-s] filename [begin length]",
1009 .help = "dump guest memory into file 'filename
'.\n\t\t\t"
1010 "-p: do paging to get guest's memory mapping
.\n\t\t\t"
1011 "-z
: dump
in kdump
-compressed format
, with zlib compression
.\n\t\t\t"
1012 "-l
: dump
in kdump
-compressed format
, with lzo compression
.\n\t\t\t"
1013 "-s
: dump
in kdump
-compressed format
, with snappy compression
.\n\t\t\t"
1014 "begin
: the starting physical address
.\n\t\t\t"
1015 "length
: the memory size
, in bytes
.",
1016 .mhandler.cmd = hmp_dump_guest_memory,
1021 @item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1022 @item dump-guest-memory [-z|-l|-s] @var{filename}
1023 @findex dump-guest-memory
1024 Dump guest memory to @var{protocol}. The file can be processed with crash or
1025 gdb. Without -z|-l|-s, the dump format is ELF.
1026 -p: do paging to get guest's memory mapping.
1027 -z: dump in kdump-compressed format, with zlib compression.
1028 -l: dump in kdump-compressed format, with lzo compression.
1029 -s: dump in kdump-compressed format, with snappy compression.
1030 filename: dump file name.
1031 begin: the starting physical address. It's optional, and should be
1032 specified together with length.
1033 length: the memory size, in bytes. It's optional, and should be specified
1034 together with begin.
1038 .name = "snapshot_blkdev
",
1039 .args_type = "reuse
:-n
,device
:B
,snapshot
-file
:s?
,format
:s?
",
1040 .params = "[-n
] device
[new-image
-file
] [format
]",
1041 .help = "initiates a live snapshot
\n\t\t\t"
1042 "of device
. If a
new image file is specified
, the
\n\t\t\t"
1043 "new image file will become the
new root image
.\n\t\t\t"
1044 "If format is specified
, the snapshot file will
\n\t\t\t"
1045 "be created
in that format
.\n\t\t\t"
1046 "The
default format is qcow2
. The
-n flag requests QEMU
\n\t\t\t"
1047 "to reuse the image found
in new-image
-file
, instead of
\n\t\t\t"
1048 "recreating it from scratch
.",
1049 .mhandler.cmd = hmp_snapshot_blkdev,
1053 @item snapshot_blkdev
1054 @findex snapshot_blkdev
1055 Snapshot device, using snapshot file as target if provided
1059 .name = "snapshot_blkdev_internal
",
1060 .args_type = "device
:B
,name
:s
",
1061 .params = "device name
",
1062 .help = "take an internal snapshot of device
.\n\t\t\t"
1063 "The format of the image used by device must
\n\t\t\t"
1064 "support it
, such as qcow2
.\n\t\t\t",
1065 .mhandler.cmd = hmp_snapshot_blkdev_internal,
1069 @item snapshot_blkdev_internal
1070 @findex snapshot_blkdev_internal
1071 Take an internal snapshot on device if it support
1075 .name = "snapshot_delete_blkdev_internal
",
1076 .args_type = "device
:B
,name
:s
,id
:s?
",
1077 .params = "device name
[id
]",
1078 .help = "delete an internal snapshot of device
.\n\t\t\t"
1079 "If id is specified
, qemu will
try delete
\n\t\t\t"
1080 "the snapshot matching both id and name
.\n\t\t\t"
1081 "The format of the image used by device must
\n\t\t\t"
1082 "support it
, such as qcow2
.\n\t\t\t",
1083 .mhandler.cmd = hmp_snapshot_delete_blkdev_internal,
1087 @item snapshot_delete_blkdev_internal
1088 @findex snapshot_delete_blkdev_internal
1089 Delete an internal snapshot on device if it support
1093 .name = "drive_mirror
",
1094 .args_type = "reuse
:-n
,full
:-f
,device
:B
,target
:s
,format
:s?
",
1095 .params = "[-n
] [-f
] device target
[format
]",
1096 .help = "initiates live storage
\n\t\t\t"
1097 "migration
for a device
. The device
's contents are\n\t\t\t"
1098 "copied to the new image file, including data that\n\t\t\t"
1099 "is written after the command is started.\n\t\t\t"
1100 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1101 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1102 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1103 "so that the result does not need a backing file.\n\t\t\t",
1104 .mhandler.cmd = hmp_drive_mirror,
1108 @findex drive_mirror
1109 Start mirroring a block device's writes to a
new destination
,
1110 using the specified target
.
1114 .name
= "drive_backup",
1115 .args_type
= "reuse:-n,full:-f,device:B,target:s,format:s?",
1116 .params
= "[-n] [-f] device target [format]",
1117 .help
= "initiates a point-in-time\n\t\t\t"
1118 "copy for a device. The device's contents are\n\t\t\t"
1119 "copied to the new image file, excluding data that\n\t\t\t"
1120 "is written after the command is started.\n\t\t\t"
1121 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1122 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1123 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1124 "so that the result does not need a backing file.\n\t\t\t",
1125 .mhandler
.cmd
= hmp_drive_backup
,
1129 @findex drive_backup
1130 Start a point
-in-time copy of a block device to a specificed target
.
1134 .name
= "drive_add",
1135 .args_type
= "pci_addr:s,opts:s",
1136 .params
= "[[<domain>:]<bus>:]<slot>\n"
1137 "[file=file][,if=type][,bus=n]\n"
1138 "[,unit=m][,media=d][,index=i]\n"
1139 "[,cyls=c,heads=h,secs=s[,trans=t]]\n"
1140 "[,snapshot=on|off][,cache=on|off]\n"
1141 "[,readonly=on|off][,copy-on-read=on|off]",
1142 .help
= "add drive to PCI storage controller",
1143 .mhandler
.cmd
= drive_hot_add
,
1149 Add drive to PCI storage controller
.
1152 #
if defined(CONFIG_PCI_HOTPLUG_OLD
)
1155 .args_type
= "pci_addr:s,type:s,opts:s?",
1156 .params
= "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...",
1157 .help
= "hot-add PCI device",
1158 .mhandler
.cmd
= pci_device_hot_add
,
1168 #
if defined(CONFIG_PCI_HOTPLUG_OLD
)
1171 .args_type
= "pci_addr:s",
1172 .params
= "[[<domain>:]<bus>:]<slot>",
1173 .help
= "hot remove PCI device",
1174 .mhandler
.cmd
= do_pci_device_hot_remove
,
1181 Hot remove PCI device
.
1185 .name
= "pcie_aer_inject_error",
1186 .args_type
= "advisory_non_fatal:-a,correctable:-c,"
1187 "id:s,error_status:s,"
1188 "header0:i?,header1:i?,header2:i?,header3:i?,"
1189 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1190 .params
= "[-a] [-c] id "
1191 "<error_status> [<tlp header> [<tlp header prefix>]]",
1192 .help
= "inject pcie aer error\n\t\t\t"
1193 " -a for advisory non fatal error\n\t\t\t"
1194 " -c for correctable error\n\t\t\t"
1195 "<id> = qdev device id\n\t\t\t"
1196 "<error_status> = error string or 32bit\n\t\t\t"
1197 "<tlb header> = 32bit x 4\n\t\t\t"
1198 "<tlb header prefix> = 32bit x 4",
1199 .user_print
= pcie_aer_inject_error_print
,
1200 .mhandler
.cmd_new
= do_pcie_aer_inject_error
,
1204 @item pcie_aer_inject_error
1205 @findex pcie_aer_inject_error
1206 Inject PCIe AER error
1210 .name
= "host_net_add",
1211 .args_type
= "device:s,opts:s?",
1212 .params
= "tap|user|socket|vde|netmap|bridge|vhost-user|dump [options]",
1213 .help
= "add host VLAN client",
1214 .mhandler
.cmd
= net_host_device_add
,
1215 .command_completion
= host_net_add_completion
,
1220 @findex host_net_add
1221 Add host VLAN client
.
1225 .name
= "host_net_remove",
1226 .args_type
= "vlan_id:i,device:s",
1227 .params
= "vlan_id name",
1228 .help
= "remove host VLAN client",
1229 .mhandler
.cmd
= net_host_device_remove
,
1230 .command_completion
= host_net_remove_completion
,
1234 @item host_net_remove
1235 @findex host_net_remove
1236 Remove host VLAN client
.
1240 .name
= "netdev_add",
1241 .args_type
= "netdev:O",
1242 .params
= "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1243 .help
= "add host network device",
1244 .mhandler
.cmd
= hmp_netdev_add
,
1245 .command_completion
= netdev_add_completion
,
1251 Add host network device
.
1255 .name
= "netdev_del",
1256 .args_type
= "id:s",
1258 .help
= "remove host network device",
1259 .mhandler
.cmd
= hmp_netdev_del
,
1260 .command_completion
= netdev_del_completion
,
1266 Remove host network device
.
1270 .name
= "object_add",
1271 .args_type
= "object:O",
1272 .params
= "[qom-type=]type,id=str[,prop=value][,...]",
1273 .help
= "create QOM object",
1274 .mhandler
.cmd
= hmp_object_add
,
1275 .command_completion
= object_add_completion
,
1285 .name
= "object_del",
1286 .args_type
= "id:s",
1288 .help
= "destroy QOM object",
1289 .mhandler
.cmd
= hmp_object_del
,
1290 .command_completion
= object_del_completion
,
1301 .name
= "hostfwd_add",
1302 .args_type
= "arg1:s,arg2:s?,arg3:s?",
1303 .params
= "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1304 .help
= "redirect TCP or UDP connections from host to guest (requires -net user)",
1305 .mhandler
.cmd
= net_slirp_hostfwd_add
,
1311 Redirect TCP or UDP connections from host to
guest (requires
-net user
).
1316 .name
= "hostfwd_remove",
1317 .args_type
= "arg1:s,arg2:s?,arg3:s?",
1318 .params
= "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
1319 .help
= "remove host-to-guest TCP or UDP redirection",
1320 .mhandler
.cmd
= net_slirp_hostfwd_remove
,
1325 @item hostfwd_remove
1326 @findex hostfwd_remove
1327 Remove host
-to
-guest TCP or UDP redirection
.
1332 .args_type
= "value:M",
1334 .help
= "request VM to change its memory allocation (in MB)",
1335 .mhandler
.cmd
= hmp_balloon
,
1339 @item balloon @
var{value
}
1341 Request VM to change its memory allocation to @
var{value
} (in MB
).
1346 .args_type
= "name:s,up:b",
1347 .params
= "name on|off",
1348 .help
= "change the link status of a network adapter",
1349 .mhandler
.cmd
= hmp_set_link
,
1350 .command_completion
= set_link_completion
,
1354 @item set_link @
var{name
} [on|off
]
1356 Switch link @
var{name
} on (i
.e
. up
) or
off (i
.e
. down
).
1360 .name
= "watchdog_action",
1361 .args_type
= "action:s",
1362 .params
= "[reset|shutdown|poweroff|pause|debug|none]",
1363 .help
= "change watchdog action",
1364 .mhandler
.cmd
= do_watchdog_action
,
1365 .command_completion
= watchdog_action_completion
,
1369 @item watchdog_action
1370 @findex watchdog_action
1371 Change watchdog action
.
1376 .args_type
= "aclname:s",
1377 .params
= "aclname",
1378 .help
= "list rules in the access control list",
1379 .mhandler
.cmd
= do_acl_show
,
1383 @item acl_show @
var{aclname
}
1385 List all the matching rules
in the access control list
, and the
default
1386 policy
. There are currently two named access control lists
,
1387 @
var{vnc
.x509dname
} and @
var{vnc
.username
} matching on the x509 client
1388 certificate distinguished name
, and SASL username respectively
.
1392 .name
= "acl_policy",
1393 .args_type
= "aclname:s,policy:s",
1394 .params
= "aclname allow|deny",
1395 .help
= "set default access control list policy",
1396 .mhandler
.cmd
= do_acl_policy
,
1400 @item acl_policy @
var{aclname
} @code
{allow|deny
}
1402 Set the
default access control list policy
, used
in the event that
1403 none of the explicit rules match
. The
default policy at startup is
1409 .args_type
= "aclname:s,match:s,policy:s,index:i?",
1410 .params
= "aclname match allow|deny [index]",
1411 .help
= "add a match rule to the access control list",
1412 .mhandler
.cmd
= do_acl_add
,
1416 @item acl_add @
var{aclname
} @
var{match
} @code
{allow|deny
} [@
var{index
}]
1418 Add a match rule to the access control list
, allowing or denying access
.
1419 The match will normally be an exact username or x509 distinguished name
,
1420 but can optionally include wildcard globs
. eg @code
{*@@EXAMPLE
.COM
} to
1421 allow all users
in the @code
{EXAMPLE
.COM
} kerberos realm
. The match will
1422 normally be appended to the end of the ACL
, but can be inserted
1423 earlier
in the list
if the optional @
var{index
} parameter is supplied
.
1427 .name
= "acl_remove",
1428 .args_type
= "aclname:s,match:s",
1429 .params
= "aclname match",
1430 .help
= "remove a match rule from the access control list",
1431 .mhandler
.cmd
= do_acl_remove
,
1435 @item acl_remove @
var{aclname
} @
var{match
}
1437 Remove the specified match rule from the access control list
.
1441 .name
= "acl_reset",
1442 .args_type
= "aclname:s",
1443 .params
= "aclname",
1444 .help
= "reset the access control list",
1445 .mhandler
.cmd
= do_acl_reset
,
1449 @item acl_reset @
var{aclname
}
1451 Remove all matches from the access control list
, and set the
default
1452 policy back to @code
{deny
}.
1456 .name
= "nbd_server_start",
1457 .args_type
= "all:-a,writable:-w,uri:s",
1458 .params
= "nbd_server_start [-a] [-w] host:port",
1459 .help
= "serve block devices on the given host and port",
1460 .mhandler
.cmd
= hmp_nbd_server_start
,
1463 @item nbd_server_start @
var{host
}:@
var{port
}
1464 @findex nbd_server_start
1465 Start an NBD server on the given host and
/or port
. If the @option
{-a
}
1466 option is included
, all of the virtual machine
's block devices that
1467 have an inserted media on them are automatically exported; in this case,
1468 the @option{-w} option makes the devices writable too.
1472 .name = "nbd_server_add",
1473 .args_type = "writable:-w,device:B",
1474 .params = "nbd_server_add [-w] device",
1475 .help = "export a block device via NBD",
1476 .mhandler.cmd = hmp_nbd_server_add,
1479 @item nbd_server_add @var{device}
1480 @findex nbd_server_add
1481 Export a block device through QEMU's NBD server
, which must be started
1482 beforehand with @command
{nbd_server_start
}. The @option
{-w
} option makes the
1483 exported device writable too
.
1487 .name
= "nbd_server_stop",
1489 .params
= "nbd_server_stop",
1490 .help
= "stop serving block devices using the NBD protocol",
1491 .mhandler
.cmd
= hmp_nbd_server_stop
,
1494 @item nbd_server_stop
1495 @findex nbd_server_stop
1496 Stop the QEMU embedded NBD server
.
1500 #
if defined(TARGET_I386
)
1504 .args_type
= "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1505 .params
= "[-b] cpu bank status mcgstatus addr misc",
1506 .help
= "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1507 .mhandler
.cmd
= do_inject_mce
,
1512 @item mce @
var{cpu
} @
var{bank
} @
var{status
} @
var{mcgstatus
} @
var{addr
} @
var{misc
}
1514 Inject an MCE on the given
CPU (x86 only
).
1519 .args_type
= "fdname:s",
1520 .params
= "getfd name",
1521 .help
= "receive a file descriptor via SCM rights and assign it a name",
1522 .mhandler
.cmd
= hmp_getfd
,
1526 @item getfd @
var{fdname
}
1528 If a file descriptor is passed alongside
this command
using the SCM_RIGHTS
1529 mechanism on unix sockets
, it is stored
using the name @
var{fdname
} for
1530 later use by other monitor commands
.
1535 .args_type
= "fdname:s",
1536 .params
= "closefd name",
1537 .help
= "close a file descriptor previously passed via SCM rights",
1538 .mhandler
.cmd
= hmp_closefd
,
1542 @item closefd @
var{fdname
}
1544 Close the file descriptor previously assigned to @
var{fdname
} using the
1545 @code
{getfd
} command
. This is only needed
if the file descriptor was
never
1546 used by another monitor command
.
1550 .name
= "block_passwd",
1551 .args_type
= "device:B,password:s",
1552 .params
= "block_passwd device password",
1553 .help
= "set the password of encrypted block devices",
1554 .mhandler
.cmd
= hmp_block_passwd
,
1558 @item block_set_io_throttle @
var{device
} @
var{bps
} @
var{bps_rd
} @
var{bps_wr
} @
var{iops
} @
var{iops_rd
} @
var{iops_wr
}
1559 @findex block_set_io_throttle
1560 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
}
1564 .name
= "block_set_io_throttle",
1565 .args_type
= "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1566 .params
= "device bps bps_rd bps_wr iops iops_rd iops_wr",
1567 .help
= "change I/O throttle limits for a block drive",
1568 .mhandler
.cmd
= hmp_block_set_io_throttle
,
1572 @item block_passwd @
var{device
} @
var{password
}
1573 @findex block_passwd
1574 Set the encrypted device @
var{device
} password to @
var{password
}
1578 .name
= "set_password",
1579 .args_type
= "protocol:s,password:s,connected:s?",
1580 .params
= "protocol password action-if-connected",
1581 .help
= "set spice/vnc password",
1582 .mhandler
.cmd
= hmp_set_password
,
1586 @item set_password
[ vnc | spice
] password
[ action
-if-connected
]
1587 @findex set_password
1589 Change spice
/vnc password
. Use zero to make the password stay valid
1590 forever
. @
var{action
-if-connected
} specifies what should happen
in
1591 case a connection is established
: @
var{fail
} makes the password change
1592 fail
. @
var{disconnect
} changes the password and disconnects the
1593 client
. @
var{keep
} changes the password and keeps the connection up
.
1594 @
var{keep
} is the
default.
1598 .name
= "expire_password",
1599 .args_type
= "protocol:s,time:s",
1600 .params
= "protocol time",
1601 .help
= "set spice/vnc password expire-time",
1602 .mhandler
.cmd
= hmp_expire_password
,
1606 @item expire_password
[ vnc | spice
] expire
-time
1607 @findex expire_password
1609 Specify when a password
for spice
/vnc becomes
1610 invalid
. @
var{expire
-time
} accepts
:
1614 Invalidate password instantly
.
1617 Password stays valid forever
.
1620 Password stays valid
for @
var{nsec
} seconds starting now
.
1623 Password is invalidated at the given time
. @
var{nsec
} are the seconds
1624 passed since
1970, i
.e
. unix epoch
.
1630 .name
= "chardev-add",
1631 .args_type
= "args:s",
1633 .help
= "add chardev",
1634 .mhandler
.cmd
= hmp_chardev_add
,
1635 .command_completion
= chardev_add_completion
,
1639 @item chardev_add args
1642 chardev_add accepts the same parameters as the
-chardev command line
switch.
1647 .name
= "chardev-remove",
1648 .args_type
= "id:s",
1650 .help
= "remove chardev",
1651 .mhandler
.cmd
= hmp_chardev_remove
,
1652 .command_completion
= chardev_remove_completion
,
1656 @item chardev_remove id
1657 @findex chardev_remove
1659 Removes the chardev @
var{id
}.
1665 .args_type
= "device:B,command:s",
1666 .params
= "[device] \"[command]\"",
1667 .help
= "run a qemu-io command on a block device",
1668 .mhandler
.cmd
= hmp_qemu_io
,
1672 @item qemu
-io @
var{device
} @
var{command
}
1675 Executes a qemu
-io command on the given block device
.
1681 .args_type
= "id:i",
1684 .mhandler
.cmd
= hmp_cpu_add
,
1688 @item cpu
-add @
var{id
}
1689 Add CPU with id @
var{id
}
1694 .args_type
= "item:s?",
1695 .params
= "[subcommand]",
1696 .help
= "show various information about the system state",
1697 .mhandler
.cmd
= do_info_help
,
1698 .sub_table
= info_cmds
,
1702 @item info @
var{subcommand
}
1704 Show various information about the system state
.
1708 show the version of QEMU
1710 show the various VLANs and the associated devices
1712 show the character devices
1714 show the block devices
1715 @item info blockstats
1716 show block device statistics
1717 @item info registers
1718 show the cpu registers
1720 show infos
for each CPU
1722 show the command line history
1724 show the interrupts
statistics (if available
)
1726 show
i8259 (PIC
) state
1728 show emulated PCI device info
1730 show virtual to physical memory
mappings (i386
, SH4
, SPARC
, PPC
, and Xtensa only
)
1732 show the active virtual memory
mappings (i386 only
)
1734 show
dynamic compiler info
1736 show NUMA information
1738 show KVM information
1740 show USB devices plugged on the virtual USB hub
1742 show all USB host devices
1744 show profiling information
1746 show information about active capturing
1747 @item info snapshots
1748 show list of VM snapshots
1750 show the current VM
status (running|paused
)
1752 show guest PCMCIA status
1754 show which guest mouse is receiving events
1756 show the vnc server status
1758 show the current VM name
1760 show the current VM UUID
1764 show user network stack connection states
1766 show migration status
1767 @item info migrate_capabilities
1768 show current migration capabilities
1769 @item info migrate_cache_size
1770 show current migration XBZRLE cache size
1772 show balloon information
1776 show qdev device model list
1785 @item info
trace-events
1786 show available
trace events and their state