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",
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",
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",
60 .name
= "block_resize",
61 .args_type
= "device:B,size:o",
62 .params
= "device size",
63 .help
= "resize a block image",
64 .cmd
= hmp_block_resize
,
70 Resize a block image
while a guest is running
. Usually requires guest
71 action to see the updated size
. Resize to a lower size is supported
,
72 but should be used with extreme caution
. Note that
this command only
73 resizes image files
, it can not resize block devices like LVM volumes
.
77 .name
= "block_stream",
78 .args_type
= "device:B,speed:o?,base:s?",
79 .params
= "device [speed [base]]",
80 .help
= "copy data from a backing file into a block device",
81 .cmd
= hmp_block_stream
,
87 Copy data from a backing file into a block device
.
91 .name
= "block_job_set_speed",
92 .args_type
= "device:B,speed:o",
93 .params
= "device speed",
94 .help
= "set maximum speed for a background block operation",
95 .cmd
= hmp_block_job_set_speed
,
99 @item block_job_set_speed
100 @findex block_job_set_speed
101 Set maximum speed
for a background block operation
.
105 .name
= "block_job_cancel",
106 .args_type
= "force:-f,device:B",
107 .params
= "[-f] device",
108 .help
= "stop an active background block operation (use -f"
109 "\n\t\t\t if the operation is currently paused)",
110 .cmd
= hmp_block_job_cancel
,
114 @item block_job_cancel
115 @findex block_job_cancel
116 Stop an active background block
operation (streaming
, mirroring
).
120 .name
= "block_job_complete",
121 .args_type
= "device:B",
123 .help
= "stop an active background block operation",
124 .cmd
= hmp_block_job_complete
,
128 @item block_job_complete
129 @findex block_job_complete
130 Manually trigger completion of an active background block operation
.
131 For mirroring
, this will
switch the device to the destination path
.
135 .name
= "block_job_pause",
136 .args_type
= "device:B",
138 .help
= "pause an active background block operation",
139 .cmd
= hmp_block_job_pause
,
143 @item block_job_pause
144 @findex block_job_pause
145 Pause an active block streaming operation
.
149 .name
= "block_job_resume",
150 .args_type
= "device:B",
152 .help
= "resume a paused background block operation",
153 .cmd
= hmp_block_job_resume
,
157 @item block_job_resume
158 @findex block_job_resume
159 Resume a paused block streaming operation
.
164 .args_type
= "force:-f,device:B",
165 .params
= "[-f] device",
166 .help
= "eject a removable medium (use -f to force it)",
171 @item eject
[-f
] @
var{device
}
173 Eject a removable
medium (use
-f to force it
).
180 .help
= "remove host block device",
181 .cmd
= hmp_drive_del
,
185 @item drive_del @
var{device
}
187 Remove host block device
. The result is that guest generated IO is no longer
188 submitted against the host device underlying the disk
. Once a drive has
189 been deleted
, the QEMU Block layer returns
-EIO which results
in IO
190 errors
in the guest
for applications that are reading
/writing to the device
.
191 These errors are always reported to the guest
, regardless of the drive
's error
192 actions (drive options rerror, werror).
197 .args_type = "device:B,target:F,arg:s?,read-only-mode:s?",
198 .params = "device filename [format [read-only-mode]]",
199 .help = "change a removable medium, optional format",
204 @item change @var{device} @var{setting}
206 Change the configuration of a device.
209 @item change @var{diskdevice} @var{filename} [@var{format} [@var{read-only-mode}]]
210 Change the medium for a removable disk device to point to @var{filename}. eg
213 (qemu) change ide1-cd0 /path/to/some.iso
216 @var{format} is optional.
218 @var{read-only-mode} may be used to change the read-only status of the device.
219 It accepts the following values:
223 Retains the current status; this is the default.
226 Makes the device read-only.
229 Makes the device writable.
232 @item change vnc @var{display},@var{options}
233 Change the configuration of the VNC server. The valid syntax for @var{display}
234 and @var{options} are described at @ref{sec_invocation}. eg
237 (qemu) change vnc localhost:1
240 @item change vnc password [@var{password}]
242 Change the password associated with the VNC server. If the new password is not
243 supplied, the monitor will prompt for it to be entered. VNC passwords are only
244 significant up to 8 letters. eg
247 (qemu) change vnc password
255 .name = "screendump",
256 .args_type = "filename:F",
257 .params = "filename",
258 .help = "save screen into PPM image 'filename
'",
259 .cmd = hmp_screendump,
263 @item screendump @var{filename}
265 Save screen into PPM image @var{filename}.
270 .args_type = "filename:F",
271 .params = "filename",
272 .help = "output logs to 'filename
'",
277 @item logfile @var{filename}
279 Output logs to @var{filename}.
283 .name = "trace-event",
284 .args_type = "name:s,option:b,vcpu:i?",
285 .params = "name on|off [vcpu]",
286 .help = "changes status of a specific trace event "
287 "(vcpu: vCPU to set, default is all)",
288 .cmd = hmp_trace_event,
289 .command_completion = trace_event_completion,
295 changes status of a trace event
298 #if defined(CONFIG_TRACE_SIMPLE)
300 .name = "trace-file",
301 .args_type = "op:s?,arg:F?",
302 .params = "on|off|flush|set [arg]",
303 .help = "open, close, or flush trace file, or set a new file name",
304 .cmd = hmp_trace_file,
308 @item trace-file on|off|flush
310 Open, close, or flush the trace file. If no argument is given, the status of the trace file is displayed.
316 .args_type = "items:s",
317 .params = "item1[,...]",
318 .help = "activate logging of the specified items",
323 @item log @var{item1}[,...]
325 Activate logging of the specified items.
330 .args_type = "name:s?",
331 .params = "[tag|id]",
332 .help = "save a VM snapshot. If no tag or id are provided, a new snapshot is created",
337 @item savevm [@var{tag}|@var{id}]
339 Create a snapshot of the whole virtual machine. If @var{tag} is
340 provided, it is used as human readable identifier. If there is already
341 a snapshot with the same tag or ID, it is replaced. More info at
347 .args_type = "name:s",
349 .help = "restore a VM snapshot from its tag or id",
351 .command_completion = loadvm_completion,
355 @item loadvm @var{tag}|@var{id}
357 Set the whole virtual machine to the snapshot identified by the tag
358 @var{tag} or the unique snapshot ID @var{id}.
363 .args_type = "name:s",
365 .help = "delete a VM snapshot from its tag or id",
367 .command_completion = delvm_completion,
371 @item delvm @var{tag}|@var{id}
373 Delete the snapshot identified by @var{tag} or @var{id}.
377 .name = "singlestep",
378 .args_type = "option:s?",
379 .params = "[on|off]",
380 .help = "run emulation in singlestep mode or switch to normal mode",
381 .cmd = hmp_singlestep,
385 @item singlestep [off]
387 Run the emulation in single step mode.
388 If called with option off, the emulation returns to normal mode.
395 .help = "stop emulation",
409 .help = "resume emulation",
420 .name = "system_wakeup",
423 .help = "wakeup guest from suspend",
424 .cmd = hmp_system_wakeup,
429 @findex system_wakeup
430 Wakeup guest from suspend.
435 .args_type = "device:s?",
436 .params = "[device]",
437 .help = "start gdbserver on given device (default 'tcp
::1234'), stop with 'none
'",
438 .cmd = hmp_gdbserver,
442 @item gdbserver [@var{port}]
444 Start gdbserver session (default @var{port}=1234)
449 .args_type = "fmt:/,addr:l",
450 .params = "/fmt addr",
451 .help = "virtual memory dump starting at 'addr
'",
452 .cmd = hmp_memory_dump,
456 @item x/fmt @var{addr}
458 Virtual memory dump starting at @var{addr}.
463 .args_type = "fmt:/,addr:l",
464 .params = "/fmt addr",
465 .help = "physical memory dump starting at 'addr
'",
466 .cmd = hmp_physical_memory_dump,
470 @item xp /@var{fmt} @var{addr}
472 Physical memory dump starting at @var{addr}.
474 @var{fmt} is a format which tells the command how to format the
475 data. Its syntax is: @option{/@{count@}@{format@}@{size@}}
479 is the number of items to be dumped.
482 can be x (hex), d (signed decimal), u (unsigned decimal), o (octal),
483 c (char) or i (asm instruction).
486 can be b (8 bits), h (16 bits), w (32 bits) or g (64 bits). On x86,
487 @code{h} or @code{w} can be specified with the @code{i} format to
488 respectively select 16 or 32 bit code instruction size.
495 Dump 10 instructions at the current instruction pointer:
500 0x90107065: lea 0x0(%esi,1),%esi
501 0x90107069: lea 0x0(%edi,1),%edi
503 0x90107071: jmp 0x90107080
511 Dump 80 16 bit values at the start of the video memory.
513 (qemu) xp/80hx 0xb8000
514 0x000b8000: 0x0b50 0x0b6c 0x0b65 0x0b78 0x0b38 0x0b36 0x0b2f 0x0b42
515 0x000b8010: 0x0b6f 0x0b63 0x0b68 0x0b73 0x0b20 0x0b56 0x0b47 0x0b41
516 0x000b8020: 0x0b42 0x0b69 0x0b6f 0x0b73 0x0b20 0x0b63 0x0b75 0x0b72
517 0x000b8030: 0x0b72 0x0b65 0x0b6e 0x0b74 0x0b2d 0x0b63 0x0b76 0x0b73
518 0x000b8040: 0x0b20 0x0b30 0x0b35 0x0b20 0x0b4e 0x0b6f 0x0b76 0x0b20
519 0x000b8050: 0x0b32 0x0b30 0x0b30 0x0b33 0x0720 0x0720 0x0720 0x0720
520 0x000b8060: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
521 0x000b8070: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
522 0x000b8080: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
523 0x000b8090: 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720 0x0720
530 .args_type = "addr:l",
532 .help = "print the host virtual address corresponding to a guest physical address",
537 @item gpa2hva @var{addr}
539 Print the host virtual address at which the guest's physical address @
var{addr
}
546 .args_type
= "addr:l",
548 .help
= "print the host physical address corresponding to a guest physical address",
554 @item gpa2hpa @
var{addr
}
556 Print the host physical address at which the guest
's physical address @var{addr}
562 .args_type = "fmt:/,val:l",
563 .params = "/fmt expr",
564 .help = "print expression value (use $reg for CPU register access)",
569 @item p or print/@var{fmt} @var{expr}
571 Print expression value. Only the @var{format} part of @var{fmt} is
577 .args_type = "fmt:/,addr:i,index:i.",
578 .params = "/fmt addr",
579 .help = "I/O port read",
580 .cmd = hmp_ioport_read,
584 @item i/@var{fmt} @var{addr} [.@var{index}]
591 .args_type = "fmt:/,addr:i,val:i",
592 .params = "/fmt addr value",
593 .help = "I/O port write",
594 .cmd = hmp_ioport_write,
598 @item o/@var{fmt} @var{addr} @var{val}
605 .args_type = "keys:s,hold-time:i?",
606 .params = "keys [hold_ms]",
607 .help = "send keys to the VM (e.g. 'sendkey ctrl
-alt
-f1
', default hold time=100 ms)",
609 .command_completion = sendkey_completion,
613 @item sendkey @var{keys}
615 Send @var{keys} to the guest. @var{keys} could be the name of the
616 key or the raw value in hexadecimal format. Use @code{-} to press
617 several keys simultaneously. Example:
622 This command is useful to send keys that your graphical user interface
623 intercepts at low level, such as @code{ctrl-alt-f1} in X Window.
627 .name = "system_reset",
630 .help = "reset the system",
631 .cmd = hmp_system_reset,
641 .name = "system_powerdown",
644 .help = "send system power down event",
645 .cmd = hmp_system_powerdown,
649 @item system_powerdown
650 @findex system_powerdown
651 Power down the system (if supported).
656 .args_type = "start:i,size:i",
657 .params = "addr size",
658 .help = "compute the checksum of a memory region",
663 @item sum @var{addr} @var{size}
665 Compute the checksum of a memory region.
670 .args_type = "devname:s",
672 .help = "add USB device (e.g. 'host
:bus
.addr
' or 'host
:vendor_id
:product_id
')",
677 @item usb_add @var{devname}
679 Add the USB device @var{devname}. This command is deprecated, please
680 use @code{device_add} instead. For details of available devices see
686 .args_type = "devname:s",
688 .help = "remove USB device 'bus
.addr
'",
693 @item usb_del @var{devname}
695 Remove the USB device @var{devname} from the QEMU virtual USB
696 hub. @var{devname} has the syntax @code{bus.addr}. Use the monitor
697 command @code{info usb} to see the devices you can remove. This
698 command is deprecated, please use @code{device_del} instead.
702 .name = "device_add",
703 .args_type = "device:O",
704 .params = "driver[,prop=value][,...]",
705 .help = "add device, like -device on the command line",
706 .cmd = hmp_device_add,
707 .command_completion = device_add_completion,
711 @item device_add @var{config}
717 .name = "device_del",
720 .help = "remove device",
721 .cmd = hmp_device_del,
722 .command_completion = device_del_completion,
726 @item device_del @var{id}
728 Remove device @var{id}. @var{id} may be a short ID
729 or a QOM object path.
734 .args_type = "index:i",
736 .help = "set the default CPU",
741 @item cpu @var{index}
747 .name = "mouse_move",
748 .args_type = "dx_str:s,dy_str:s,dz_str:s?",
749 .params = "dx dy [dz]",
750 .help = "send mouse move events",
751 .cmd = hmp_mouse_move,
755 @item mouse_move @var{dx} @var{dy} [@var{dz}]
757 Move the active mouse to the specified coordinates @var{dx} @var{dy}
758 with optional scroll axis @var{dz}.
762 .name = "mouse_button",
763 .args_type = "button_state:i",
765 .help = "change mouse button state (1=L, 2=M, 4=R)",
766 .cmd = hmp_mouse_button,
770 @item mouse_button @var{val}
772 Change the active mouse button state @var{val} (1=L, 2=M, 4=R).
777 .args_type = "index:i",
779 .help = "set which mouse device receives events",
780 .cmd = hmp_mouse_set,
784 @item mouse_set @var{index}
786 Set which mouse device receives events at given @var{index}, index
794 .name = "wavcapture",
795 .args_type = "path:F,freq:i?,bits:i?,nchannels:i?",
796 .params = "path [frequency [bits [channels]]]",
797 .help = "capture audio to a wave file (default frequency=44100 bits=16 channels=2)",
798 .cmd = hmp_wavcapture,
801 @item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
803 Capture audio into @var{filename}. Using sample rate @var{frequency}
804 bits per sample @var{bits} and number of channels @var{channels}.
808 @item Sample rate = 44100 Hz - CD quality
810 @item Number of channels = 2 - Stereo
815 .name = "stopcapture",
817 .params = "capture index",
818 .help = "stop capture",
819 .cmd = hmp_stopcapture,
822 @item stopcapture @var{index}
824 Stop capture with a given @var{index}, index can be obtained with
832 .args_type = "val:l,size:i,filename:s",
833 .params = "addr size file",
834 .help = "save to disk virtual memory dump starting at 'addr
' of size 'size
'",
839 @item memsave @var{addr} @var{size} @var{file}
841 save to disk virtual memory dump starting at @var{addr} of size @var{size}.
846 .args_type = "val:l,size:i,filename:s",
847 .params = "addr size file",
848 .help = "save to disk physical memory dump starting at 'addr
' of size 'size
'",
853 @item pmemsave @var{addr} @var{size} @var{file}
855 save to disk physical memory dump starting at @var{addr} of size @var{size}.
860 .args_type = "bootdevice:s",
861 .params = "bootdevice",
862 .help = "define new values for the boot device list",
867 @item boot_set @var{bootdevicelist}
869 Define new values for the boot device list. Those values will override
870 the values specified on the command line through the @code{-boot} option.
872 The values that can be specified here depend on the machine type, but are
873 the same that can be specified in the @code{-boot} command line option.
880 .help = "inject an NMI",
886 Inject an NMI on the default CPU (x86/s390) or all CPUs (ppc64).
891 .name = "ringbuf_write",
892 .args_type = "device:s,data:s",
893 .params = "device data",
894 .help = "Write to a ring buffer character device",
895 .cmd = hmp_ringbuf_write,
896 .command_completion = ringbuf_write_completion,
900 @item ringbuf_write @var{device} @var{data}
901 @findex ringbuf_write
902 Write @var{data} to ring buffer character device @var{device}.
903 @var{data} must be a UTF-8 string.
908 .name = "ringbuf_read",
909 .args_type = "device:s,size:i",
910 .params = "device size",
911 .help = "Read from a ring buffer character device",
912 .cmd = hmp_ringbuf_read,
913 .command_completion = ringbuf_write_completion,
917 @item ringbuf_read @var{device}
919 Read and print up to @var{size} bytes from ring buffer character
921 Certain non-printable characters are printed \uXXXX, where XXXX is the
922 character code in hexadecimal. Character \ is printed \\.
923 Bug: can screw up when the buffer contains invalid UTF-8 sequences,
924 NUL characters, after the ring buffer lost data, and when reading
925 stops because the size limit is reached.
931 .args_type = "detach:-d,blk:-b,inc:-i,uri:s",
932 .params = "[-d] [-b] [-i] uri",
933 .help = "migrate to URI (using -d to not wait for completion)"
934 "\n\t\t\t -b for migration without shared storage with"
935 " full copy of disk\n\t\t\t -i for migration without "
936 "shared storage with incremental copy of disk "
937 "(base image shared between src and destination)",
943 @item migrate [-d] [-b] [-i] @var{uri}
945 Migrate to @var{uri} (using -d to not wait for completion).
946 -b for migration with full copy of disk
947 -i for migration with incremental copy of disk (base image is shared)
951 .name = "migrate_cancel",
954 .help = "cancel the current VM migration",
955 .cmd = hmp_migrate_cancel,
960 @findex migrate_cancel
961 Cancel the current VM migration.
965 .name = "migrate_continue",
966 .args_type = "state:s",
968 .help = "Continue migration from the given paused state",
969 .cmd = hmp_migrate_continue,
972 @item migrate_continue @var{state}
973 @findex migrate_continue
974 Continue migration from the paused state @var{state}
978 .name = "migrate_incoming",
979 .args_type = "uri:s",
981 .help = "Continue an incoming migration from an -incoming defer",
982 .cmd = hmp_migrate_incoming,
986 @item migrate_incoming @var{uri}
987 @findex migrate_incoming
988 Continue an incoming migration using the @var{uri} (that has the same syntax
989 as the -incoming option).
994 .name = "migrate_set_cache_size",
995 .args_type = "value:o",
997 .help = "set cache size (in bytes) for XBZRLE migrations,"
998 "the cache size will be rounded down to the nearest "
1000 "The cache size affects the number of cache misses."
1001 "In case of a high cache miss ratio you need to increase"
1003 .cmd = hmp_migrate_set_cache_size,
1007 @item migrate_set_cache_size @var{value}
1008 @findex migrate_set_cache_size
1009 Set cache size to @var{value} (in bytes) for xbzrle migrations.
1013 .name = "migrate_set_speed",
1014 .args_type = "value:o",
1016 .help = "set maximum speed (in bytes) for migrations. "
1017 "Defaults to MB if no size suffix is specified, ie. B/K/M/G/T",
1018 .cmd = hmp_migrate_set_speed,
1022 @item migrate_set_speed @var{value}
1023 @findex migrate_set_speed
1024 Set maximum speed to @var{value} (in bytes) for migrations.
1028 .name = "migrate_set_downtime",
1029 .args_type = "value:T",
1031 .help = "set maximum tolerated downtime (in seconds) for migrations",
1032 .cmd = hmp_migrate_set_downtime,
1036 @item migrate_set_downtime @var{second}
1037 @findex migrate_set_downtime
1038 Set maximum tolerated downtime (in seconds) for migration.
1042 .name = "migrate_set_capability",
1043 .args_type = "capability:s,state:b",
1044 .params = "capability state",
1045 .help = "Enable/Disable the usage of a capability for migration",
1046 .cmd = hmp_migrate_set_capability,
1047 .command_completion = migrate_set_capability_completion,
1051 @item migrate_set_capability @var{capability} @var{state}
1052 @findex migrate_set_capability
1053 Enable/Disable the usage of a capability @var{capability} for migration.
1057 .name = "migrate_set_parameter",
1058 .args_type = "parameter:s,value:s",
1059 .params = "parameter value",
1060 .help = "Set the parameter for migration",
1061 .cmd = hmp_migrate_set_parameter,
1062 .command_completion = migrate_set_parameter_completion,
1066 @item migrate_set_parameter @var{parameter} @var{value}
1067 @findex migrate_set_parameter
1068 Set the parameter @var{parameter} for migration.
1072 .name = "migrate_start_postcopy",
1075 .help = "Followup to a migration command to switch the migration"
1076 " to postcopy mode. The postcopy-ram capability must "
1077 "be set before the original migration command.",
1078 .cmd = hmp_migrate_start_postcopy,
1082 @item migrate_start_postcopy
1083 @findex migrate_start_postcopy
1084 Switch in-progress migration to postcopy mode. Ignored after the end of
1085 migration (or once already in postcopy).
1089 .name = "x_colo_lost_heartbeat",
1092 .help = "Tell COLO that heartbeat is lost,\n\t\t\t"
1093 "a failover or takeover is needed.",
1094 .cmd = hmp_x_colo_lost_heartbeat,
1098 @item x_colo_lost_heartbeat
1099 @findex x_colo_lost_heartbeat
1100 Tell COLO that heartbeat is lost, a failover or takeover is needed.
1104 .name = "client_migrate_info",
1105 .args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?",
1106 .params = "protocol hostname port tls-port cert-subject",
1107 .help = "set migration information for remote display",
1108 .cmd = hmp_client_migrate_info,
1112 @item client_migrate_info @var{protocol} @var{hostname} @var{port} @var{tls-port} @var{cert-subject}
1113 @findex client_migrate_info
1114 Set migration information for remote display. This makes the server
1115 ask the client to automatically reconnect using the new parameters
1116 once migration finished successfully. Only implemented for SPICE.
1120 .name = "dump-guest-memory",
1121 .args_type = "paging:-p,detach:-d,zlib:-z,lzo:-l,snappy:-s,filename:F,begin:i?,length:i?",
1122 .params = "[-p] [-d] [-z|-l|-s] filename [begin length]",
1123 .help = "dump guest memory into file 'filename
'.\n\t\t\t"
1124 "-p: do paging to get guest's memory mapping
.\n\t\t\t"
1125 "-d
: return immediately (do not wait
for completion
).\n\t\t\t"
1126 "-z
: dump
in kdump
-compressed format
, with zlib compression
.\n\t\t\t"
1127 "-l
: dump
in kdump
-compressed format
, with lzo compression
.\n\t\t\t"
1128 "-s
: dump
in kdump
-compressed format
, with snappy compression
.\n\t\t\t"
1129 "begin
: the starting physical address
.\n\t\t\t"
1130 "length
: the memory size
, in bytes
.",
1131 .cmd = hmp_dump_guest_memory,
1136 @item dump-guest-memory [-p] @var{filename} @var{begin} @var{length}
1137 @item dump-guest-memory [-z|-l|-s] @var{filename}
1138 @findex dump-guest-memory
1139 Dump guest memory to @var{protocol}. The file can be processed with crash or
1140 gdb. Without -z|-l|-s, the dump format is ELF.
1141 -p: do paging to get guest's memory mapping.
1142 -z: dump in kdump-compressed format, with zlib compression.
1143 -l: dump in kdump-compressed format, with lzo compression.
1144 -s: dump in kdump-compressed format, with snappy compression.
1145 filename: dump file name.
1146 begin: the starting physical address. It's optional, and should be
1147 specified together with length.
1148 length: the memory size, in bytes. It's optional, and should be specified
1149 together with begin.
1152 #if defined(TARGET_S390X)
1154 .name = "dump
-skeys
",
1155 .args_type = "filename
:F
",
1157 .help = "Save guest storage keys into file
'filename'.\n",
1158 .cmd = hmp_dump_skeys,
1163 @item dump-skeys @var{filename}
1165 Save guest storage keys to a file.
1168 #if defined(TARGET_S390X)
1170 .name = "migration_mode
",
1171 .args_type = "mode
:i
",
1173 .help = "Enables or disables migration mode
\n",
1174 .cmd = hmp_migrationmode,
1179 @item migration_mode @var{mode}
1180 @findex migration_mode
1181 Enables or disables migration mode.
1185 .name = "snapshot_blkdev
",
1186 .args_type = "reuse
:-n
,device
:B
,snapshot
-file
:s?
,format
:s?
",
1187 .params = "[-n
] device
[new-image
-file
] [format
]",
1188 .help = "initiates a live snapshot
\n\t\t\t"
1189 "of device
. If a
new image file is specified
, the
\n\t\t\t"
1190 "new image file will become the
new root image
.\n\t\t\t"
1191 "If format is specified
, the snapshot file will
\n\t\t\t"
1192 "be created
in that format
.\n\t\t\t"
1193 "The
default format is qcow2
. The
-n flag requests QEMU
\n\t\t\t"
1194 "to reuse the image found
in new-image
-file
, instead of
\n\t\t\t"
1195 "recreating it from scratch
.",
1196 .cmd = hmp_snapshot_blkdev,
1200 @item snapshot_blkdev
1201 @findex snapshot_blkdev
1202 Snapshot device, using snapshot file as target if provided
1206 .name = "snapshot_blkdev_internal
",
1207 .args_type = "device
:B
,name
:s
",
1208 .params = "device name
",
1209 .help = "take an internal snapshot of device
.\n\t\t\t"
1210 "The format of the image used by device must
\n\t\t\t"
1211 "support it
, such as qcow2
.\n\t\t\t",
1212 .cmd = hmp_snapshot_blkdev_internal,
1216 @item snapshot_blkdev_internal
1217 @findex snapshot_blkdev_internal
1218 Take an internal snapshot on device if it support
1222 .name = "snapshot_delete_blkdev_internal
",
1223 .args_type = "device
:B
,name
:s
,id
:s?
",
1224 .params = "device name
[id
]",
1225 .help = "delete an internal snapshot of device
.\n\t\t\t"
1226 "If id is specified
, qemu will
try delete
\n\t\t\t"
1227 "the snapshot matching both id and name
.\n\t\t\t"
1228 "The format of the image used by device must
\n\t\t\t"
1229 "support it
, such as qcow2
.\n\t\t\t",
1230 .cmd = hmp_snapshot_delete_blkdev_internal,
1234 @item snapshot_delete_blkdev_internal
1235 @findex snapshot_delete_blkdev_internal
1236 Delete an internal snapshot on device if it support
1240 .name = "drive_mirror
",
1241 .args_type = "reuse
:-n
,full
:-f
,device
:B
,target
:s
,format
:s?
",
1242 .params = "[-n
] [-f
] device target
[format
]",
1243 .help = "initiates live storage
\n\t\t\t"
1244 "migration
for a device
. The device
's contents are\n\t\t\t"
1245 "copied to the new image file, including data that\n\t\t\t"
1246 "is written after the command is started.\n\t\t\t"
1247 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1248 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1249 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1250 "so that the result does not need a backing file.\n\t\t\t",
1251 .cmd = hmp_drive_mirror,
1255 @findex drive_mirror
1256 Start mirroring a block device's writes to a
new destination
,
1257 using the specified target
.
1261 .name
= "drive_backup",
1262 .args_type
= "reuse:-n,full:-f,compress:-c,device:B,target:s,format:s?",
1263 .params
= "[-n] [-f] [-c] device target [format]",
1264 .help
= "initiates a point-in-time\n\t\t\t"
1265 "copy for a device. The device's contents are\n\t\t\t"
1266 "copied to the new image file, excluding data that\n\t\t\t"
1267 "is written after the command is started.\n\t\t\t"
1268 "The -n flag requests QEMU to reuse the image found\n\t\t\t"
1269 "in new-image-file, instead of recreating it from scratch.\n\t\t\t"
1270 "The -f flag requests QEMU to copy the whole disk,\n\t\t\t"
1271 "so that the result does not need a backing file.\n\t\t\t"
1272 "The -c flag requests QEMU to compress backup data\n\t\t\t"
1273 "(if the target format supports it).\n\t\t\t",
1274 .cmd
= hmp_drive_backup
,
1278 @findex drive_backup
1279 Start a point
-in-time copy of a block device to a specificed target
.
1283 .name
= "drive_add",
1284 .args_type
= "node:-n,pci_addr:s,opts:s",
1285 .params
= "[-n] [[<domain>:]<bus>:]<slot>\n"
1286 "[file=file][,if=type][,bus=n]\n"
1287 "[,unit=m][,media=d][,index=i]\n"
1288 "[,cyls=c,heads=h,secs=s[,trans=t]]\n"
1289 "[,snapshot=on|off][,cache=on|off]\n"
1290 "[,readonly=on|off][,copy-on-read=on|off]",
1291 .help
= "add drive to PCI storage controller",
1292 .cmd
= hmp_drive_add
,
1298 Add drive to PCI storage controller
.
1302 .name
= "pcie_aer_inject_error",
1303 .args_type
= "advisory_non_fatal:-a,correctable:-c,"
1304 "id:s,error_status:s,"
1305 "header0:i?,header1:i?,header2:i?,header3:i?,"
1306 "prefix0:i?,prefix1:i?,prefix2:i?,prefix3:i?",
1307 .params
= "[-a] [-c] id "
1308 "<error_status> [<tlp header> [<tlp header prefix>]]",
1309 .help
= "inject pcie aer error\n\t\t\t"
1310 " -a for advisory non fatal error\n\t\t\t"
1311 " -c for correctable error\n\t\t\t"
1312 "<id> = qdev device id\n\t\t\t"
1313 "<error_status> = error string or 32bit\n\t\t\t"
1314 "<tlb header> = 32bit x 4\n\t\t\t"
1315 "<tlb header prefix> = 32bit x 4",
1316 .cmd
= hmp_pcie_aer_inject_error
,
1320 @item pcie_aer_inject_error
1321 @findex pcie_aer_inject_error
1322 Inject PCIe AER error
1326 .name
= "host_net_add",
1327 .args_type
= "device:s,opts:s?",
1328 .params
= "tap|user|socket|vde|netmap|bridge|vhost-user|dump [options]",
1329 .help
= "add host VLAN client (deprecated, use netdev_add instead)",
1330 .cmd
= hmp_host_net_add
,
1331 .command_completion
= host_net_add_completion
,
1336 @findex host_net_add
1337 Add host VLAN client
. Deprecated
, please use @code
{netdev_add
} instead
.
1341 .name
= "host_net_remove",
1342 .args_type
= "vlan_id:i,device:s",
1343 .params
= "vlan_id name",
1344 .help
= "remove host VLAN client (deprecated, use netdev_del instead)",
1345 .cmd
= hmp_host_net_remove
,
1346 .command_completion
= host_net_remove_completion
,
1350 @item host_net_remove
1351 @findex host_net_remove
1352 Remove host VLAN client
. Deprecated
, please use @code
{netdev_del
} instead
.
1356 .name
= "netdev_add",
1357 .args_type
= "netdev:O",
1358 .params
= "[user|tap|socket|vde|bridge|hubport|netmap|vhost-user],id=str[,prop=value][,...]",
1359 .help
= "add host network device",
1360 .cmd
= hmp_netdev_add
,
1361 .command_completion
= netdev_add_completion
,
1367 Add host network device
.
1371 .name
= "netdev_del",
1372 .args_type
= "id:s",
1374 .help
= "remove host network device",
1375 .cmd
= hmp_netdev_del
,
1376 .command_completion
= netdev_del_completion
,
1382 Remove host network device
.
1386 .name
= "object_add",
1387 .args_type
= "object:O",
1388 .params
= "[qom-type=]type,id=str[,prop=value][,...]",
1389 .help
= "create QOM object",
1390 .cmd
= hmp_object_add
,
1391 .command_completion
= object_add_completion
,
1401 .name
= "object_del",
1402 .args_type
= "id:s",
1404 .help
= "destroy QOM object",
1405 .cmd
= hmp_object_del
,
1406 .command_completion
= object_del_completion
,
1417 .name
= "hostfwd_add",
1418 .args_type
= "arg1:s,arg2:s?,arg3:s?",
1419 .params
= "[vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport",
1420 .help
= "redirect TCP or UDP connections from host to guest (requires -net user)",
1421 .cmd
= hmp_hostfwd_add
,
1427 Redirect TCP or UDP connections from host to
guest (requires
-net user
).
1432 .name
= "hostfwd_remove",
1433 .args_type
= "arg1:s,arg2:s?,arg3:s?",
1434 .params
= "[vlan_id name] [tcp|udp]:[hostaddr]:hostport",
1435 .help
= "remove host-to-guest TCP or UDP redirection",
1436 .cmd
= hmp_hostfwd_remove
,
1441 @item hostfwd_remove
1442 @findex hostfwd_remove
1443 Remove host
-to
-guest TCP or UDP redirection
.
1448 .args_type
= "value:M",
1450 .help
= "request VM to change its memory allocation (in MB)",
1455 @item balloon @
var{value
}
1457 Request VM to change its memory allocation to @
var{value
} (in MB
).
1462 .args_type
= "name:s,up:b",
1463 .params
= "name on|off",
1464 .help
= "change the link status of a network adapter",
1465 .cmd
= hmp_set_link
,
1466 .command_completion
= set_link_completion
,
1470 @item set_link @
var{name
} [on|off
]
1472 Switch link @
var{name
} on (i
.e
. up
) or
off (i
.e
. down
).
1476 .name
= "watchdog_action",
1477 .args_type
= "action:s",
1478 .params
= "[reset|shutdown|poweroff|pause|debug|none]",
1479 .help
= "change watchdog action",
1480 .cmd
= hmp_watchdog_action
,
1481 .command_completion
= watchdog_action_completion
,
1485 @item watchdog_action
1486 @findex watchdog_action
1487 Change watchdog action
.
1492 .args_type
= "aclname:s",
1493 .params
= "aclname",
1494 .help
= "list rules in the access control list",
1495 .cmd
= hmp_acl_show
,
1499 @item acl_show @
var{aclname
}
1501 List all the matching rules
in the access control list
, and the
default
1502 policy
. There are currently two named access control lists
,
1503 @
var{vnc
.x509dname
} and @
var{vnc
.username
} matching on the x509 client
1504 certificate distinguished name
, and SASL username respectively
.
1508 .name
= "acl_policy",
1509 .args_type
= "aclname:s,policy:s",
1510 .params
= "aclname allow|deny",
1511 .help
= "set default access control list policy",
1512 .cmd
= hmp_acl_policy
,
1516 @item acl_policy @
var{aclname
} @code
{allow|deny
}
1518 Set the
default access control list policy
, used
in the event that
1519 none of the explicit rules match
. The
default policy at startup is
1525 .args_type
= "aclname:s,match:s,policy:s,index:i?",
1526 .params
= "aclname match allow|deny [index]",
1527 .help
= "add a match rule to the access control list",
1532 @item acl_add @
var{aclname
} @
var{match
} @code
{allow|deny
} [@
var{index
}]
1534 Add a match rule to the access control list
, allowing or denying access
.
1535 The match will normally be an exact username or x509 distinguished name
,
1536 but can optionally include wildcard globs
. eg @code
{*@@EXAMPLE
.COM
} to
1537 allow all users
in the @code
{EXAMPLE
.COM
} kerberos realm
. The match will
1538 normally be appended to the end of the ACL
, but can be inserted
1539 earlier
in the list
if the optional @
var{index
} parameter is supplied
.
1543 .name
= "acl_remove",
1544 .args_type
= "aclname:s,match:s",
1545 .params
= "aclname match",
1546 .help
= "remove a match rule from the access control list",
1547 .cmd
= hmp_acl_remove
,
1551 @item acl_remove @
var{aclname
} @
var{match
}
1553 Remove the specified match rule from the access control list
.
1557 .name
= "acl_reset",
1558 .args_type
= "aclname:s",
1559 .params
= "aclname",
1560 .help
= "reset the access control list",
1561 .cmd
= hmp_acl_reset
,
1565 @item acl_reset @
var{aclname
}
1567 Remove all matches from the access control list
, and set the
default
1568 policy back to @code
{deny
}.
1572 .name
= "nbd_server_start",
1573 .args_type
= "all:-a,writable:-w,uri:s",
1574 .params
= "nbd_server_start [-a] [-w] host:port",
1575 .help
= "serve block devices on the given host and port",
1576 .cmd
= hmp_nbd_server_start
,
1579 @item nbd_server_start @
var{host
}:@
var{port
}
1580 @findex nbd_server_start
1581 Start an NBD server on the given host and
/or port
. If the @option
{-a
}
1582 option is included
, all of the virtual machine
's block devices that
1583 have an inserted media on them are automatically exported; in this case,
1584 the @option{-w} option makes the devices writable too.
1588 .name = "nbd_server_add",
1589 .args_type = "writable:-w,device:B",
1590 .params = "nbd_server_add [-w] device",
1591 .help = "export a block device via NBD",
1592 .cmd = hmp_nbd_server_add,
1595 @item nbd_server_add @var{device}
1596 @findex nbd_server_add
1597 Export a block device through QEMU's NBD server
, which must be started
1598 beforehand with @command
{nbd_server_start
}. The @option
{-w
} option makes the
1599 exported device writable too
.
1603 .name
= "nbd_server_stop",
1605 .params
= "nbd_server_stop",
1606 .help
= "stop serving block devices using the NBD protocol",
1607 .cmd
= hmp_nbd_server_stop
,
1610 @item nbd_server_stop
1611 @findex nbd_server_stop
1612 Stop the QEMU embedded NBD server
.
1616 #
if defined(TARGET_I386
)
1620 .args_type
= "broadcast:-b,cpu_index:i,bank:i,status:l,mcg_status:l,addr:l,misc:l",
1621 .params
= "[-b] cpu bank status mcgstatus addr misc",
1622 .help
= "inject a MCE on the given CPU [and broadcast to other CPUs with -b option]",
1628 @item mce @
var{cpu
} @
var{bank
} @
var{status
} @
var{mcgstatus
} @
var{addr
} @
var{misc
}
1630 Inject an MCE on the given
CPU (x86 only
).
1635 .args_type
= "fdname:s",
1636 .params
= "getfd name",
1637 .help
= "receive a file descriptor via SCM rights and assign it a name",
1642 @item getfd @
var{fdname
}
1644 If a file descriptor is passed alongside
this command
using the SCM_RIGHTS
1645 mechanism on unix sockets
, it is stored
using the name @
var{fdname
} for
1646 later use by other monitor commands
.
1651 .args_type
= "fdname:s",
1652 .params
= "closefd name",
1653 .help
= "close a file descriptor previously passed via SCM rights",
1658 @item closefd @
var{fdname
}
1660 Close the file descriptor previously assigned to @
var{fdname
} using the
1661 @code
{getfd
} command
. This is only needed
if the file descriptor was
never
1662 used by another monitor command
.
1666 .name
= "block_passwd",
1667 .args_type
= "device:B,password:s",
1668 .params
= "block_passwd device password",
1669 .help
= "set the password of encrypted block devices",
1670 .cmd
= hmp_block_passwd
,
1674 @item block_passwd @
var{device
} @
var{password
}
1675 @findex block_passwd
1676 Set the encrypted device @
var{device
} password to @
var{password
}
1678 This command is now obsolete and will always
return an error since
2.10
1682 .name
= "block_set_io_throttle",
1683 .args_type
= "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l",
1684 .params
= "device bps bps_rd bps_wr iops iops_rd iops_wr",
1685 .help
= "change I/O throttle limits for a block drive",
1686 .cmd
= hmp_block_set_io_throttle
,
1690 @item block_set_io_throttle @
var{device
} @
var{bps
} @
var{bps_rd
} @
var{bps_wr
} @
var{iops
} @
var{iops_rd
} @
var{iops_wr
}
1691 @findex block_set_io_throttle
1692 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
}
1696 .name
= "set_password",
1697 .args_type
= "protocol:s,password:s,connected:s?",
1698 .params
= "protocol password action-if-connected",
1699 .help
= "set spice/vnc password",
1700 .cmd
= hmp_set_password
,
1704 @item set_password
[ vnc | spice
] password
[ action
-if-connected
]
1705 @findex set_password
1706 Change spice
/vnc password
. Use zero to make the password stay valid
1707 forever
. @
var{action
-if-connected
} specifies what should happen
in
1708 case a connection is established
: @
var{fail
} makes the password change
1709 fail
. @
var{disconnect
} changes the password and disconnects the
1710 client
. @
var{keep
} changes the password and keeps the connection up
.
1711 @
var{keep
} is the
default.
1715 .name
= "expire_password",
1716 .args_type
= "protocol:s,time:s",
1717 .params
= "protocol time",
1718 .help
= "set spice/vnc password expire-time",
1719 .cmd
= hmp_expire_password
,
1723 @item expire_password
[ vnc | spice
] expire
-time
1724 @findex expire_password
1725 Specify when a password
for spice
/vnc becomes
1726 invalid
. @
var{expire
-time
} accepts
:
1730 Invalidate password instantly
.
1733 Password stays valid forever
.
1736 Password stays valid
for @
var{nsec
} seconds starting now
.
1739 Password is invalidated at the given time
. @
var{nsec
} are the seconds
1740 passed since
1970, i
.e
. unix epoch
.
1746 .name
= "chardev-add",
1747 .args_type
= "args:s",
1749 .help
= "add chardev",
1750 .cmd
= hmp_chardev_add
,
1751 .command_completion
= chardev_add_completion
,
1755 @item chardev
-add args
1757 chardev
-add accepts the same parameters as the
-chardev command line
switch.
1762 .name
= "chardev-change",
1763 .args_type
= "id:s,args:s",
1764 .params
= "id args",
1765 .help
= "change chardev",
1766 .cmd
= hmp_chardev_change
,
1770 @item chardev
-change args
1771 @findex chardev
-change
1772 chardev
-change accepts existing chardev @
var{id
} and then the same arguments
1773 as the
-chardev command line
switch (except
for "id").
1778 .name
= "chardev-remove",
1779 .args_type
= "id:s",
1781 .help
= "remove chardev",
1782 .cmd
= hmp_chardev_remove
,
1783 .command_completion
= chardev_remove_completion
,
1787 @item chardev
-remove id
1788 @findex chardev
-remove
1789 Removes the chardev @
var{id
}.
1794 .name
= "chardev-send-break",
1795 .args_type
= "id:s",
1797 .help
= "send a break on chardev",
1798 .cmd
= hmp_chardev_send_break
,
1799 .command_completion
= chardev_remove_completion
,
1803 @item chardev
-send
-break id
1804 @findex chardev
-send
-break
1805 Send a
break on the chardev @
var{id
}.
1811 .args_type
= "device:B,command:s",
1812 .params
= "[device] \"[command]\"",
1813 .help
= "run a qemu-io command on a block device",
1818 @item qemu
-io @
var{device
} @
var{command
}
1820 Executes a qemu
-io command on the given block device
.
1826 .args_type
= "id:i",
1833 @item cpu
-add @
var{id
}
1835 Add CPU with id @
var{id
}
1840 .args_type
= "path:s?",
1842 .help
= "list QOM properties",
1843 .cmd
= hmp_qom_list
,
1847 @item qom
-list
[@
var{path
}]
1848 Print QOM properties of object at location @
var{path
}
1853 .args_type
= "path:s,property:s,value:s",
1854 .params
= "path property value",
1855 .help
= "set QOM property",
1860 @item qom
-set @
var{path
} @
var{property
} @
var{value
}
1861 Set QOM property @
var{property
} of object at location @
var{path
} to value @
var{value
}
1866 .args_type
= "item:s?",
1867 .params
= "[subcommand]",
1868 .help
= "show various information about the system state",
1869 .cmd
= hmp_info_help
,
1870 .sub_table
= info_cmds
,