root / qmp-commands.hx @ f36d55af
History | View | Annotate | Download (58.8 kB)
1 |
HXCOMM QMP dispatch table and documentation |
---|---|
2 |
HXCOMM Text between SQMP and EQMP is copied to the QMP documention file and |
3 |
HXCOMM does not show up in the other formats. |
4 |
|
5 |
SQMP |
6 |
QMP Supported Commands |
7 |
---------------------- |
8 |
|
9 |
This document describes all commands currently supported by QMP. |
10 |
|
11 |
Most of the time their usage is exactly the same as in the user Monitor, this |
12 |
means that any other document which also describe commands (the manpage, |
13 |
QEMU's manual, etc) can and should be consulted. |
14 |
|
15 |
QMP has two types of commands: regular and query commands. Regular commands |
16 |
usually change the Virtual Machine's state someway, while query commands just |
17 |
return information. The sections below are divided accordingly. |
18 |
|
19 |
It's important to observe that all communication examples are formatted in |
20 |
a reader-friendly way, so that they're easier to understand. However, in real |
21 |
protocol usage, they're emitted as a single line. |
22 |
|
23 |
Also, the following notation is used to denote data flow: |
24 |
|
25 |
-> data issued by the Client |
26 |
<- Server data response |
27 |
|
28 |
Please, refer to the QMP specification (QMP/qmp-spec.txt) for detailed |
29 |
information on the Server command and response formats. |
30 |
|
31 |
NOTE: This document is temporary and will be replaced soon. |
32 |
|
33 |
1. Stability Considerations |
34 |
=========================== |
35 |
|
36 |
The current QMP command set (described in this file) may be useful for a |
37 |
number of use cases, however it's limited and several commands have bad |
38 |
defined semantics, specially with regard to command completion. |
39 |
|
40 |
These problems are going to be solved incrementally in the next QEMU releases |
41 |
and we're going to establish a deprecation policy for badly defined commands. |
42 |
|
43 |
If you're planning to adopt QMP, please observe the following: |
44 |
|
45 |
1. The deprecation policy will take effect and be documented soon, please |
46 |
check the documentation of each used command as soon as a new release of |
47 |
QEMU is available |
48 |
|
49 |
2. DO NOT rely on anything which is not explicit documented |
50 |
|
51 |
3. Errors, in special, are not documented. Applications should NOT check |
52 |
for specific errors classes or data (it's strongly recommended to only |
53 |
check for the "error" key) |
54 |
|
55 |
2. Regular Commands |
56 |
=================== |
57 |
|
58 |
Server's responses in the examples below are always a success response, please |
59 |
refer to the QMP specification for more details on error responses. |
60 |
|
61 |
EQMP |
62 |
|
63 |
{ |
64 |
.name = "quit", |
65 |
.args_type = "", |
66 |
.mhandler.cmd_new = qmp_marshal_input_quit, |
67 |
}, |
68 |
|
69 |
SQMP |
70 |
quit |
71 |
---- |
72 |
|
73 |
Quit the emulator. |
74 |
|
75 |
Arguments: None. |
76 |
|
77 |
Example: |
78 |
|
79 |
-> { "execute": "quit" } |
80 |
<- { "return": {} } |
81 |
|
82 |
EQMP |
83 |
|
84 |
{ |
85 |
.name = "eject", |
86 |
.args_type = "force:-f,device:B", |
87 |
.mhandler.cmd_new = qmp_marshal_input_eject, |
88 |
}, |
89 |
|
90 |
SQMP |
91 |
eject |
92 |
----- |
93 |
|
94 |
Eject a removable medium. |
95 |
|
96 |
Arguments: |
97 |
|
98 |
- force: force ejection (json-bool, optional) |
99 |
- device: device name (json-string) |
100 |
|
101 |
Example: |
102 |
|
103 |
-> { "execute": "eject", "arguments": { "device": "ide1-cd0" } } |
104 |
<- { "return": {} } |
105 |
|
106 |
Note: The "force" argument defaults to false. |
107 |
|
108 |
EQMP |
109 |
|
110 |
{ |
111 |
.name = "change", |
112 |
.args_type = "device:B,target:F,arg:s?", |
113 |
.mhandler.cmd_new = qmp_marshal_input_change, |
114 |
}, |
115 |
|
116 |
SQMP |
117 |
change |
118 |
------ |
119 |
|
120 |
Change a removable medium or VNC configuration. |
121 |
|
122 |
Arguments: |
123 |
|
124 |
- "device": device name (json-string) |
125 |
- "target": filename or item (json-string) |
126 |
- "arg": additional argument (json-string, optional) |
127 |
|
128 |
Examples: |
129 |
|
130 |
1. Change a removable medium |
131 |
|
132 |
-> { "execute": "change", |
133 |
"arguments": { "device": "ide1-cd0", |
134 |
"target": "/srv/images/Fedora-12-x86_64-DVD.iso" } } |
135 |
<- { "return": {} } |
136 |
|
137 |
2. Change VNC password |
138 |
|
139 |
-> { "execute": "change", |
140 |
"arguments": { "device": "vnc", "target": "password", |
141 |
"arg": "foobar1" } } |
142 |
<- { "return": {} } |
143 |
|
144 |
EQMP |
145 |
|
146 |
{ |
147 |
.name = "screendump", |
148 |
.args_type = "filename:F", |
149 |
.params = "filename", |
150 |
.help = "save screen into PPM image 'filename'", |
151 |
.user_print = monitor_user_noop, |
152 |
.mhandler.cmd_new = do_screen_dump, |
153 |
}, |
154 |
|
155 |
SQMP |
156 |
screendump |
157 |
---------- |
158 |
|
159 |
Save screen into PPM image. |
160 |
|
161 |
Arguments: |
162 |
|
163 |
- "filename": file path (json-string) |
164 |
|
165 |
Example: |
166 |
|
167 |
-> { "execute": "screendump", "arguments": { "filename": "/tmp/image" } } |
168 |
<- { "return": {} } |
169 |
|
170 |
EQMP |
171 |
|
172 |
{ |
173 |
.name = "stop", |
174 |
.args_type = "", |
175 |
.mhandler.cmd_new = qmp_marshal_input_stop, |
176 |
}, |
177 |
|
178 |
SQMP |
179 |
stop |
180 |
---- |
181 |
|
182 |
Stop the emulator. |
183 |
|
184 |
Arguments: None. |
185 |
|
186 |
Example: |
187 |
|
188 |
-> { "execute": "stop" } |
189 |
<- { "return": {} } |
190 |
|
191 |
EQMP |
192 |
|
193 |
{ |
194 |
.name = "cont", |
195 |
.args_type = "", |
196 |
.mhandler.cmd_new = qmp_marshal_input_cont, |
197 |
}, |
198 |
|
199 |
SQMP |
200 |
cont |
201 |
---- |
202 |
|
203 |
Resume emulation. |
204 |
|
205 |
Arguments: None. |
206 |
|
207 |
Example: |
208 |
|
209 |
-> { "execute": "cont" } |
210 |
<- { "return": {} } |
211 |
|
212 |
EQMP |
213 |
|
214 |
{ |
215 |
.name = "system_wakeup", |
216 |
.args_type = "", |
217 |
.mhandler.cmd_new = qmp_marshal_input_system_wakeup, |
218 |
}, |
219 |
|
220 |
SQMP |
221 |
system_wakeup |
222 |
------------- |
223 |
|
224 |
Wakeup guest from suspend. |
225 |
|
226 |
Arguments: None. |
227 |
|
228 |
Example: |
229 |
|
230 |
-> { "execute": "system_wakeup" } |
231 |
<- { "return": {} } |
232 |
|
233 |
EQMP |
234 |
|
235 |
{ |
236 |
.name = "system_reset", |
237 |
.args_type = "", |
238 |
.mhandler.cmd_new = qmp_marshal_input_system_reset, |
239 |
}, |
240 |
|
241 |
SQMP |
242 |
system_reset |
243 |
------------ |
244 |
|
245 |
Reset the system. |
246 |
|
247 |
Arguments: None. |
248 |
|
249 |
Example: |
250 |
|
251 |
-> { "execute": "system_reset" } |
252 |
<- { "return": {} } |
253 |
|
254 |
EQMP |
255 |
|
256 |
{ |
257 |
.name = "system_powerdown", |
258 |
.args_type = "", |
259 |
.mhandler.cmd_new = qmp_marshal_input_system_powerdown, |
260 |
}, |
261 |
|
262 |
SQMP |
263 |
system_powerdown |
264 |
---------------- |
265 |
|
266 |
Send system power down event. |
267 |
|
268 |
Arguments: None. |
269 |
|
270 |
Example: |
271 |
|
272 |
-> { "execute": "system_powerdown" } |
273 |
<- { "return": {} } |
274 |
|
275 |
EQMP |
276 |
|
277 |
{ |
278 |
.name = "device_add", |
279 |
.args_type = "device:O", |
280 |
.params = "driver[,prop=value][,...]", |
281 |
.help = "add device, like -device on the command line", |
282 |
.user_print = monitor_user_noop, |
283 |
.mhandler.cmd_new = do_device_add, |
284 |
}, |
285 |
|
286 |
SQMP |
287 |
device_add |
288 |
---------- |
289 |
|
290 |
Add a device. |
291 |
|
292 |
Arguments: |
293 |
|
294 |
- "driver": the name of the new device's driver (json-string) |
295 |
- "bus": the device's parent bus (device tree path, json-string, optional) |
296 |
- "id": the device's ID, must be unique (json-string) |
297 |
- device properties |
298 |
|
299 |
Example: |
300 |
|
301 |
-> { "execute": "device_add", "arguments": { "driver": "e1000", "id": "net1" } } |
302 |
<- { "return": {} } |
303 |
|
304 |
Notes: |
305 |
|
306 |
(1) For detailed information about this command, please refer to the |
307 |
'docs/qdev-device-use.txt' file. |
308 |
|
309 |
(2) It's possible to list device properties by running QEMU with the |
310 |
"-device DEVICE,\?" command-line argument, where DEVICE is the device's name |
311 |
|
312 |
EQMP |
313 |
|
314 |
{ |
315 |
.name = "device_del", |
316 |
.args_type = "id:s", |
317 |
.mhandler.cmd_new = qmp_marshal_input_device_del, |
318 |
}, |
319 |
|
320 |
SQMP |
321 |
device_del |
322 |
---------- |
323 |
|
324 |
Remove a device. |
325 |
|
326 |
Arguments: |
327 |
|
328 |
- "id": the device's ID (json-string) |
329 |
|
330 |
Example: |
331 |
|
332 |
-> { "execute": "device_del", "arguments": { "id": "net1" } } |
333 |
<- { "return": {} } |
334 |
|
335 |
EQMP |
336 |
|
337 |
{ |
338 |
.name = "cpu", |
339 |
.args_type = "index:i", |
340 |
.mhandler.cmd_new = qmp_marshal_input_cpu, |
341 |
}, |
342 |
|
343 |
SQMP |
344 |
cpu |
345 |
--- |
346 |
|
347 |
Set the default CPU. |
348 |
|
349 |
Arguments: |
350 |
|
351 |
- "index": the CPU's index (json-int) |
352 |
|
353 |
Example: |
354 |
|
355 |
-> { "execute": "cpu", "arguments": { "index": 0 } } |
356 |
<- { "return": {} } |
357 |
|
358 |
Note: CPUs' indexes are obtained with the 'query-cpus' command. |
359 |
|
360 |
EQMP |
361 |
|
362 |
{ |
363 |
.name = "memsave", |
364 |
.args_type = "val:l,size:i,filename:s,cpu:i?", |
365 |
.mhandler.cmd_new = qmp_marshal_input_memsave, |
366 |
}, |
367 |
|
368 |
SQMP |
369 |
memsave |
370 |
------- |
371 |
|
372 |
Save to disk virtual memory dump starting at 'val' of size 'size'. |
373 |
|
374 |
Arguments: |
375 |
|
376 |
- "val": the starting address (json-int) |
377 |
- "size": the memory size, in bytes (json-int) |
378 |
- "filename": file path (json-string) |
379 |
- "cpu": virtual CPU index (json-int, optional) |
380 |
|
381 |
Example: |
382 |
|
383 |
-> { "execute": "memsave", |
384 |
"arguments": { "val": 10, |
385 |
"size": 100, |
386 |
"filename": "/tmp/virtual-mem-dump" } } |
387 |
<- { "return": {} } |
388 |
|
389 |
EQMP |
390 |
|
391 |
{ |
392 |
.name = "pmemsave", |
393 |
.args_type = "val:l,size:i,filename:s", |
394 |
.mhandler.cmd_new = qmp_marshal_input_pmemsave, |
395 |
}, |
396 |
|
397 |
SQMP |
398 |
pmemsave |
399 |
-------- |
400 |
|
401 |
Save to disk physical memory dump starting at 'val' of size 'size'. |
402 |
|
403 |
Arguments: |
404 |
|
405 |
- "val": the starting address (json-int) |
406 |
- "size": the memory size, in bytes (json-int) |
407 |
- "filename": file path (json-string) |
408 |
|
409 |
Example: |
410 |
|
411 |
-> { "execute": "pmemsave", |
412 |
"arguments": { "val": 10, |
413 |
"size": 100, |
414 |
"filename": "/tmp/physical-mem-dump" } } |
415 |
<- { "return": {} } |
416 |
|
417 |
EQMP |
418 |
|
419 |
{ |
420 |
.name = "inject-nmi", |
421 |
.args_type = "", |
422 |
.mhandler.cmd_new = qmp_marshal_input_inject_nmi, |
423 |
}, |
424 |
|
425 |
SQMP |
426 |
inject-nmi |
427 |
---------- |
428 |
|
429 |
Inject an NMI on guest's CPUs. |
430 |
|
431 |
Arguments: None. |
432 |
|
433 |
Example: |
434 |
|
435 |
-> { "execute": "inject-nmi" } |
436 |
<- { "return": {} } |
437 |
|
438 |
Note: inject-nmi is only supported for x86 guest currently, it will |
439 |
returns "Unsupported" error for non-x86 guest. |
440 |
|
441 |
EQMP |
442 |
|
443 |
{ |
444 |
.name = "xen-save-devices-state", |
445 |
.args_type = "filename:F", |
446 |
.mhandler.cmd_new = qmp_marshal_input_xen_save_devices_state, |
447 |
}, |
448 |
|
449 |
SQMP |
450 |
xen-save-devices-state |
451 |
------- |
452 |
|
453 |
Save the state of all devices to file. The RAM and the block devices |
454 |
of the VM are not saved by this command. |
455 |
|
456 |
Arguments: |
457 |
|
458 |
- "filename": the file to save the state of the devices to as binary |
459 |
data. See xen-save-devices-state.txt for a description of the binary |
460 |
format. |
461 |
|
462 |
Example: |
463 |
|
464 |
-> { "execute": "xen-save-devices-state", |
465 |
"arguments": { "filename": "/tmp/save" } } |
466 |
<- { "return": {} } |
467 |
|
468 |
EQMP |
469 |
|
470 |
{ |
471 |
.name = "migrate", |
472 |
.args_type = "detach:-d,blk:-b,inc:-i,uri:s", |
473 |
.mhandler.cmd_new = qmp_marshal_input_migrate, |
474 |
}, |
475 |
|
476 |
SQMP |
477 |
migrate |
478 |
------- |
479 |
|
480 |
Migrate to URI. |
481 |
|
482 |
Arguments: |
483 |
|
484 |
- "blk": block migration, full disk copy (json-bool, optional) |
485 |
- "inc": incremental disk copy (json-bool, optional) |
486 |
- "uri": Destination URI (json-string) |
487 |
|
488 |
Example: |
489 |
|
490 |
-> { "execute": "migrate", "arguments": { "uri": "tcp:0:4446" } } |
491 |
<- { "return": {} } |
492 |
|
493 |
Notes: |
494 |
|
495 |
(1) The 'query-migrate' command should be used to check migration's progress |
496 |
and final result (this information is provided by the 'status' member) |
497 |
(2) All boolean arguments default to false |
498 |
(3) The user Monitor's "detach" argument is invalid in QMP and should not |
499 |
be used |
500 |
|
501 |
EQMP |
502 |
|
503 |
{ |
504 |
.name = "migrate_cancel", |
505 |
.args_type = "", |
506 |
.mhandler.cmd_new = qmp_marshal_input_migrate_cancel, |
507 |
}, |
508 |
|
509 |
SQMP |
510 |
migrate_cancel |
511 |
-------------- |
512 |
|
513 |
Cancel the current migration. |
514 |
|
515 |
Arguments: None. |
516 |
|
517 |
Example: |
518 |
|
519 |
-> { "execute": "migrate_cancel" } |
520 |
<- { "return": {} } |
521 |
|
522 |
EQMP |
523 |
{ |
524 |
.name = "migrate-set-cache-size", |
525 |
.args_type = "value:o", |
526 |
.mhandler.cmd_new = qmp_marshal_input_migrate_set_cache_size, |
527 |
}, |
528 |
|
529 |
SQMP |
530 |
migrate-set-cache-size |
531 |
--------------------- |
532 |
|
533 |
Set cache size to be used by XBZRLE migration, the cache size will be rounded |
534 |
down to the nearest power of 2 |
535 |
|
536 |
Arguments: |
537 |
|
538 |
- "value": cache size in bytes (json-int) |
539 |
|
540 |
Example: |
541 |
|
542 |
-> { "execute": "migrate-set-cache-size", "arguments": { "value": 536870912 } } |
543 |
<- { "return": {} } |
544 |
|
545 |
EQMP |
546 |
{ |
547 |
.name = "query-migrate-cache-size", |
548 |
.args_type = "", |
549 |
.mhandler.cmd_new = qmp_marshal_input_query_migrate_cache_size, |
550 |
}, |
551 |
|
552 |
SQMP |
553 |
query-migrate-cache-size |
554 |
--------------------- |
555 |
|
556 |
Show cache size to be used by XBZRLE migration |
557 |
|
558 |
returns a json-object with the following information: |
559 |
- "size" : json-int |
560 |
|
561 |
Example: |
562 |
|
563 |
-> { "execute": "query-migrate-cache-size" } |
564 |
<- { "return": 67108864 } |
565 |
|
566 |
EQMP |
567 |
|
568 |
{ |
569 |
.name = "migrate_set_speed", |
570 |
.args_type = "value:o", |
571 |
.mhandler.cmd_new = qmp_marshal_input_migrate_set_speed, |
572 |
}, |
573 |
|
574 |
SQMP |
575 |
migrate_set_speed |
576 |
----------------- |
577 |
|
578 |
Set maximum speed for migrations. |
579 |
|
580 |
Arguments: |
581 |
|
582 |
- "value": maximum speed, in bytes per second (json-int) |
583 |
|
584 |
Example: |
585 |
|
586 |
-> { "execute": "migrate_set_speed", "arguments": { "value": 1024 } } |
587 |
<- { "return": {} } |
588 |
|
589 |
EQMP |
590 |
|
591 |
{ |
592 |
.name = "migrate_set_downtime", |
593 |
.args_type = "value:T", |
594 |
.mhandler.cmd_new = qmp_marshal_input_migrate_set_downtime, |
595 |
}, |
596 |
|
597 |
SQMP |
598 |
migrate_set_downtime |
599 |
-------------------- |
600 |
|
601 |
Set maximum tolerated downtime (in seconds) for migrations. |
602 |
|
603 |
Arguments: |
604 |
|
605 |
- "value": maximum downtime (json-number) |
606 |
|
607 |
Example: |
608 |
|
609 |
-> { "execute": "migrate_set_downtime", "arguments": { "value": 0.1 } } |
610 |
<- { "return": {} } |
611 |
|
612 |
EQMP |
613 |
|
614 |
{ |
615 |
.name = "client_migrate_info", |
616 |
.args_type = "protocol:s,hostname:s,port:i?,tls-port:i?,cert-subject:s?", |
617 |
.params = "protocol hostname port tls-port cert-subject", |
618 |
.help = "send migration info to spice/vnc client", |
619 |
.user_print = monitor_user_noop, |
620 |
.mhandler.cmd_async = client_migrate_info, |
621 |
.flags = MONITOR_CMD_ASYNC, |
622 |
}, |
623 |
|
624 |
SQMP |
625 |
client_migrate_info |
626 |
------------------ |
627 |
|
628 |
Set the spice/vnc connection info for the migration target. The spice/vnc |
629 |
server will ask the spice/vnc client to automatically reconnect using the |
630 |
new parameters (if specified) once the vm migration finished successfully. |
631 |
|
632 |
Arguments: |
633 |
|
634 |
- "protocol": protocol: "spice" or "vnc" (json-string) |
635 |
- "hostname": migration target hostname (json-string) |
636 |
- "port": spice/vnc tcp port for plaintext channels (json-int, optional) |
637 |
- "tls-port": spice tcp port for tls-secured channels (json-int, optional) |
638 |
- "cert-subject": server certificate subject (json-string, optional) |
639 |
|
640 |
Example: |
641 |
|
642 |
-> { "execute": "client_migrate_info", |
643 |
"arguments": { "protocol": "spice", |
644 |
"hostname": "virt42.lab.kraxel.org", |
645 |
"port": 1234 } } |
646 |
<- { "return": {} } |
647 |
|
648 |
EQMP |
649 |
|
650 |
{ |
651 |
.name = "dump-guest-memory", |
652 |
.args_type = "paging:b,protocol:s,begin:i?,end:i?", |
653 |
.params = "-p protocol [begin] [length]", |
654 |
.help = "dump guest memory to file", |
655 |
.user_print = monitor_user_noop, |
656 |
.mhandler.cmd_new = qmp_marshal_input_dump_guest_memory, |
657 |
}, |
658 |
|
659 |
SQMP |
660 |
dump |
661 |
|
662 |
|
663 |
Dump guest memory to file. The file can be processed with crash or gdb. |
664 |
|
665 |
Arguments: |
666 |
|
667 |
- "paging": do paging to get guest's memory mapping (json-bool) |
668 |
- "protocol": destination file(started with "file:") or destination file |
669 |
descriptor (started with "fd:") (json-string) |
670 |
- "begin": the starting physical address. It's optional, and should be specified |
671 |
with length together (json-int) |
672 |
- "length": the memory size, in bytes. It's optional, and should be specified |
673 |
with begin together (json-int) |
674 |
|
675 |
Example: |
676 |
|
677 |
-> { "execute": "dump-guest-memory", "arguments": { "protocol": "fd:dump" } } |
678 |
<- { "return": {} } |
679 |
|
680 |
Notes: |
681 |
|
682 |
(1) All boolean arguments default to false |
683 |
|
684 |
EQMP |
685 |
|
686 |
{ |
687 |
.name = "netdev_add", |
688 |
.args_type = "netdev:O", |
689 |
.mhandler.cmd_new = qmp_netdev_add, |
690 |
}, |
691 |
|
692 |
SQMP |
693 |
netdev_add |
694 |
---------- |
695 |
|
696 |
Add host network device. |
697 |
|
698 |
Arguments: |
699 |
|
700 |
- "type": the device type, "tap", "user", ... (json-string) |
701 |
- "id": the device's ID, must be unique (json-string) |
702 |
- device options |
703 |
|
704 |
Example: |
705 |
|
706 |
-> { "execute": "netdev_add", "arguments": { "type": "user", "id": "netdev1" } } |
707 |
<- { "return": {} } |
708 |
|
709 |
Note: The supported device options are the same ones supported by the '-net' |
710 |
command-line argument, which are listed in the '-help' output or QEMU's |
711 |
manual |
712 |
|
713 |
EQMP |
714 |
|
715 |
{ |
716 |
.name = "netdev_del", |
717 |
.args_type = "id:s", |
718 |
.mhandler.cmd_new = qmp_marshal_input_netdev_del, |
719 |
}, |
720 |
|
721 |
SQMP |
722 |
netdev_del |
723 |
---------- |
724 |
|
725 |
Remove host network device. |
726 |
|
727 |
Arguments: |
728 |
|
729 |
- "id": the device's ID, must be unique (json-string) |
730 |
|
731 |
Example: |
732 |
|
733 |
-> { "execute": "netdev_del", "arguments": { "id": "netdev1" } } |
734 |
<- { "return": {} } |
735 |
|
736 |
|
737 |
EQMP |
738 |
|
739 |
{ |
740 |
.name = "block_resize", |
741 |
.args_type = "device:B,size:o", |
742 |
.mhandler.cmd_new = qmp_marshal_input_block_resize, |
743 |
}, |
744 |
|
745 |
SQMP |
746 |
block_resize |
747 |
------------ |
748 |
|
749 |
Resize a block image while a guest is running. |
750 |
|
751 |
Arguments: |
752 |
|
753 |
- "device": the device's ID, must be unique (json-string) |
754 |
- "size": new size |
755 |
|
756 |
Example: |
757 |
|
758 |
-> { "execute": "block_resize", "arguments": { "device": "scratch", "size": 1073741824 } } |
759 |
<- { "return": {} } |
760 |
|
761 |
EQMP |
762 |
|
763 |
{ |
764 |
.name = "block-stream", |
765 |
.args_type = "device:B,base:s?,speed:o?", |
766 |
.mhandler.cmd_new = qmp_marshal_input_block_stream, |
767 |
}, |
768 |
|
769 |
{ |
770 |
.name = "block-job-set-speed", |
771 |
.args_type = "device:B,speed:o", |
772 |
.mhandler.cmd_new = qmp_marshal_input_block_job_set_speed, |
773 |
}, |
774 |
|
775 |
{ |
776 |
.name = "block-job-cancel", |
777 |
.args_type = "device:B", |
778 |
.mhandler.cmd_new = qmp_marshal_input_block_job_cancel, |
779 |
}, |
780 |
{ |
781 |
.name = "transaction", |
782 |
.args_type = "actions:q", |
783 |
.mhandler.cmd_new = qmp_marshal_input_transaction, |
784 |
}, |
785 |
|
786 |
SQMP |
787 |
transaction |
788 |
----------- |
789 |
|
790 |
Atomically operate on one or more block devices. The only supported |
791 |
operation for now is snapshotting. If there is any failure performing |
792 |
any of the operations, all snapshots for the group are abandoned, and |
793 |
the original disks pre-snapshot attempt are used. |
794 |
|
795 |
A list of dictionaries is accepted, that contains the actions to be performed. |
796 |
For snapshots this is the device, the file to use for the new snapshot, |
797 |
and the format. The default format, if not specified, is qcow2. |
798 |
|
799 |
Each new snapshot defaults to being created by QEMU (wiping any |
800 |
contents if the file already exists), but it is also possible to reuse |
801 |
an externally-created file. In the latter case, you should ensure that |
802 |
the new image file has the same contents as the current one; QEMU cannot |
803 |
perform any meaningful check. Typically this is achieved by using the |
804 |
current image file as the backing file for the new image. |
805 |
|
806 |
Arguments: |
807 |
|
808 |
actions array: |
809 |
- "type": the operation to perform. The only supported |
810 |
value is "blockdev-snapshot-sync". (json-string) |
811 |
- "data": a dictionary. The contents depend on the value |
812 |
of "type". When "type" is "blockdev-snapshot-sync": |
813 |
- "device": device name to snapshot (json-string) |
814 |
- "snapshot-file": name of new image file (json-string) |
815 |
- "format": format of new image (json-string, optional) |
816 |
- "mode": whether and how QEMU should create the snapshot file |
817 |
(NewImageMode, optional, default "absolute-paths") |
818 |
|
819 |
Example: |
820 |
|
821 |
-> { "execute": "transaction", |
822 |
"arguments": { "actions": [ |
823 |
{ 'type': 'blockdev-snapshot-sync', 'data' : { "device": "ide-hd0", |
824 |
"snapshot-file": "/some/place/my-image", |
825 |
"format": "qcow2" } }, |
826 |
{ 'type': 'blockdev-snapshot-sync', 'data' : { "device": "ide-hd1", |
827 |
"snapshot-file": "/some/place/my-image2", |
828 |
"mode": "existing", |
829 |
"format": "qcow2" } } ] } } |
830 |
<- { "return": {} } |
831 |
|
832 |
EQMP |
833 |
|
834 |
{ |
835 |
.name = "blockdev-snapshot-sync", |
836 |
.args_type = "device:B,snapshot-file:s,format:s?,mode:s?", |
837 |
.mhandler.cmd_new = qmp_marshal_input_blockdev_snapshot_sync, |
838 |
}, |
839 |
|
840 |
SQMP |
841 |
blockdev-snapshot-sync |
842 |
---------------------- |
843 |
|
844 |
Synchronous snapshot of a block device. snapshot-file specifies the |
845 |
target of the new image. If the file exists, or if it is a device, the |
846 |
snapshot will be created in the existing file/device. If does not |
847 |
exist, a new file will be created. format specifies the format of the |
848 |
snapshot image, default is qcow2. |
849 |
|
850 |
Arguments: |
851 |
|
852 |
- "device": device name to snapshot (json-string) |
853 |
- "snapshot-file": name of new image file (json-string) |
854 |
- "mode": whether and how QEMU should create the snapshot file |
855 |
(NewImageMode, optional, default "absolute-paths") |
856 |
- "format": format of new image (json-string, optional) |
857 |
|
858 |
Example: |
859 |
|
860 |
-> { "execute": "blockdev-snapshot-sync", "arguments": { "device": "ide-hd0", |
861 |
"snapshot-file": |
862 |
"/some/place/my-image", |
863 |
"format": "qcow2" } } |
864 |
<- { "return": {} } |
865 |
|
866 |
EQMP |
867 |
|
868 |
{ |
869 |
.name = "balloon", |
870 |
.args_type = "value:M", |
871 |
.mhandler.cmd_new = qmp_marshal_input_balloon, |
872 |
}, |
873 |
|
874 |
SQMP |
875 |
balloon |
876 |
------- |
877 |
|
878 |
Request VM to change its memory allocation (in bytes). |
879 |
|
880 |
Arguments: |
881 |
|
882 |
- "value": New memory allocation (json-int) |
883 |
|
884 |
Example: |
885 |
|
886 |
-> { "execute": "balloon", "arguments": { "value": 536870912 } } |
887 |
<- { "return": {} } |
888 |
|
889 |
EQMP |
890 |
|
891 |
{ |
892 |
.name = "set_link", |
893 |
.args_type = "name:s,up:b", |
894 |
.mhandler.cmd_new = qmp_marshal_input_set_link, |
895 |
}, |
896 |
|
897 |
SQMP |
898 |
set_link |
899 |
-------- |
900 |
|
901 |
Change the link status of a network adapter. |
902 |
|
903 |
Arguments: |
904 |
|
905 |
- "name": network device name (json-string) |
906 |
- "up": status is up (json-bool) |
907 |
|
908 |
Example: |
909 |
|
910 |
-> { "execute": "set_link", "arguments": { "name": "e1000.0", "up": false } } |
911 |
<- { "return": {} } |
912 |
|
913 |
EQMP |
914 |
|
915 |
{ |
916 |
.name = "getfd", |
917 |
.args_type = "fdname:s", |
918 |
.params = "getfd name", |
919 |
.help = "receive a file descriptor via SCM rights and assign it a name", |
920 |
.mhandler.cmd_new = qmp_marshal_input_getfd, |
921 |
}, |
922 |
|
923 |
SQMP |
924 |
getfd |
925 |
----- |
926 |
|
927 |
Receive a file descriptor via SCM rights and assign it a name. |
928 |
|
929 |
Arguments: |
930 |
|
931 |
- "fdname": file descriptor name (json-string) |
932 |
|
933 |
Example: |
934 |
|
935 |
-> { "execute": "getfd", "arguments": { "fdname": "fd1" } } |
936 |
<- { "return": {} } |
937 |
|
938 |
Notes: |
939 |
|
940 |
(1) If the name specified by the "fdname" argument already exists, |
941 |
the file descriptor assigned to it will be closed and replaced |
942 |
by the received file descriptor. |
943 |
(2) The 'closefd' command can be used to explicitly close the file |
944 |
descriptor when it is no longer needed. |
945 |
|
946 |
EQMP |
947 |
|
948 |
{ |
949 |
.name = "closefd", |
950 |
.args_type = "fdname:s", |
951 |
.params = "closefd name", |
952 |
.help = "close a file descriptor previously passed via SCM rights", |
953 |
.mhandler.cmd_new = qmp_marshal_input_closefd, |
954 |
}, |
955 |
|
956 |
SQMP |
957 |
closefd |
958 |
------- |
959 |
|
960 |
Close a file descriptor previously passed via SCM rights. |
961 |
|
962 |
Arguments: |
963 |
|
964 |
- "fdname": file descriptor name (json-string) |
965 |
|
966 |
Example: |
967 |
|
968 |
-> { "execute": "closefd", "arguments": { "fdname": "fd1" } } |
969 |
<- { "return": {} } |
970 |
|
971 |
EQMP |
972 |
|
973 |
{ |
974 |
.name = "block_passwd", |
975 |
.args_type = "device:B,password:s", |
976 |
.mhandler.cmd_new = qmp_marshal_input_block_passwd, |
977 |
}, |
978 |
|
979 |
SQMP |
980 |
block_passwd |
981 |
------------ |
982 |
|
983 |
Set the password of encrypted block devices. |
984 |
|
985 |
Arguments: |
986 |
|
987 |
- "device": device name (json-string) |
988 |
- "password": password (json-string) |
989 |
|
990 |
Example: |
991 |
|
992 |
-> { "execute": "block_passwd", "arguments": { "device": "ide0-hd0", |
993 |
"password": "12345" } } |
994 |
<- { "return": {} } |
995 |
|
996 |
EQMP |
997 |
|
998 |
{ |
999 |
.name = "block_set_io_throttle", |
1000 |
.args_type = "device:B,bps:l,bps_rd:l,bps_wr:l,iops:l,iops_rd:l,iops_wr:l", |
1001 |
.mhandler.cmd_new = qmp_marshal_input_block_set_io_throttle, |
1002 |
}, |
1003 |
|
1004 |
SQMP |
1005 |
block_set_io_throttle |
1006 |
------------ |
1007 |
|
1008 |
Change I/O throttle limits for a block drive. |
1009 |
|
1010 |
Arguments: |
1011 |
|
1012 |
- "device": device name (json-string) |
1013 |
- "bps": total throughput limit in bytes per second(json-int) |
1014 |
- "bps_rd": read throughput limit in bytes per second(json-int) |
1015 |
- "bps_wr": read throughput limit in bytes per second(json-int) |
1016 |
- "iops": total I/O operations per second(json-int) |
1017 |
- "iops_rd": read I/O operations per second(json-int) |
1018 |
- "iops_wr": write I/O operations per second(json-int) |
1019 |
|
1020 |
Example: |
1021 |
|
1022 |
-> { "execute": "block_set_io_throttle", "arguments": { "device": "virtio0", |
1023 |
"bps": "1000000", |
1024 |
"bps_rd": "0", |
1025 |
"bps_wr": "0", |
1026 |
"iops": "0", |
1027 |
"iops_rd": "0", |
1028 |
"iops_wr": "0" } } |
1029 |
<- { "return": {} } |
1030 |
|
1031 |
EQMP |
1032 |
|
1033 |
{ |
1034 |
.name = "set_password", |
1035 |
.args_type = "protocol:s,password:s,connected:s?", |
1036 |
.mhandler.cmd_new = qmp_marshal_input_set_password, |
1037 |
}, |
1038 |
|
1039 |
SQMP |
1040 |
set_password |
1041 |
------------ |
1042 |
|
1043 |
Set the password for vnc/spice protocols. |
1044 |
|
1045 |
Arguments: |
1046 |
|
1047 |
- "protocol": protocol name (json-string) |
1048 |
- "password": password (json-string) |
1049 |
- "connected": [ keep | disconnect | fail ] (josn-string, optional) |
1050 |
|
1051 |
Example: |
1052 |
|
1053 |
-> { "execute": "set_password", "arguments": { "protocol": "vnc", |
1054 |
"password": "secret" } } |
1055 |
<- { "return": {} } |
1056 |
|
1057 |
EQMP |
1058 |
|
1059 |
{ |
1060 |
.name = "expire_password", |
1061 |
.args_type = "protocol:s,time:s", |
1062 |
.mhandler.cmd_new = qmp_marshal_input_expire_password, |
1063 |
}, |
1064 |
|
1065 |
SQMP |
1066 |
expire_password |
1067 |
--------------- |
1068 |
|
1069 |
Set the password expire time for vnc/spice protocols. |
1070 |
|
1071 |
Arguments: |
1072 |
|
1073 |
- "protocol": protocol name (json-string) |
1074 |
- "time": [ now | never | +secs | secs ] (json-string) |
1075 |
|
1076 |
Example: |
1077 |
|
1078 |
-> { "execute": "expire_password", "arguments": { "protocol": "vnc", |
1079 |
"time": "+60" } } |
1080 |
<- { "return": {} } |
1081 |
|
1082 |
EQMP |
1083 |
|
1084 |
{ |
1085 |
.name = "add_client", |
1086 |
.args_type = "protocol:s,fdname:s,skipauth:b?,tls:b?", |
1087 |
.params = "protocol fdname skipauth tls", |
1088 |
.help = "add a graphics client", |
1089 |
.user_print = monitor_user_noop, |
1090 |
.mhandler.cmd_new = add_graphics_client, |
1091 |
}, |
1092 |
|
1093 |
SQMP |
1094 |
add_client |
1095 |
---------- |
1096 |
|
1097 |
Add a graphics client |
1098 |
|
1099 |
Arguments: |
1100 |
|
1101 |
- "protocol": protocol name (json-string) |
1102 |
- "fdname": file descriptor name (json-string) |
1103 |
- "skipauth": whether to skip authentication (json-bool, optional) |
1104 |
- "tls": whether to perform TLS (json-bool, optional) |
1105 |
|
1106 |
Example: |
1107 |
|
1108 |
-> { "execute": "add_client", "arguments": { "protocol": "vnc", |
1109 |
"fdname": "myclient" } } |
1110 |
<- { "return": {} } |
1111 |
|
1112 |
EQMP |
1113 |
{ |
1114 |
.name = "qmp_capabilities", |
1115 |
.args_type = "", |
1116 |
.params = "", |
1117 |
.help = "enable QMP capabilities", |
1118 |
.user_print = monitor_user_noop, |
1119 |
.mhandler.cmd_new = do_qmp_capabilities, |
1120 |
}, |
1121 |
|
1122 |
SQMP |
1123 |
qmp_capabilities |
1124 |
---------------- |
1125 |
|
1126 |
Enable QMP capabilities. |
1127 |
|
1128 |
Arguments: None. |
1129 |
|
1130 |
Example: |
1131 |
|
1132 |
-> { "execute": "qmp_capabilities" } |
1133 |
<- { "return": {} } |
1134 |
|
1135 |
Note: This command must be issued before issuing any other command. |
1136 |
|
1137 |
EQMP |
1138 |
|
1139 |
{ |
1140 |
.name = "human-monitor-command", |
1141 |
.args_type = "command-line:s,cpu-index:i?", |
1142 |
.mhandler.cmd_new = qmp_marshal_input_human_monitor_command, |
1143 |
}, |
1144 |
|
1145 |
SQMP |
1146 |
human-monitor-command |
1147 |
--------------------- |
1148 |
|
1149 |
Execute a Human Monitor command. |
1150 |
|
1151 |
Arguments: |
1152 |
|
1153 |
- command-line: the command name and its arguments, just like the |
1154 |
Human Monitor's shell (json-string) |
1155 |
- cpu-index: select the CPU number to be used by commands which access CPU |
1156 |
data, like 'info registers'. The Monitor selects CPU 0 if this |
1157 |
argument is not provided (json-int, optional) |
1158 |
|
1159 |
Example: |
1160 |
|
1161 |
-> { "execute": "human-monitor-command", "arguments": { "command-line": "info kvm" } } |
1162 |
<- { "return": "kvm support: enabled\r\n" } |
1163 |
|
1164 |
Notes: |
1165 |
|
1166 |
(1) The Human Monitor is NOT an stable interface, this means that command |
1167 |
names, arguments and responses can change or be removed at ANY time. |
1168 |
Applications that rely on long term stability guarantees should NOT |
1169 |
use this command |
1170 |
|
1171 |
(2) Limitations: |
1172 |
|
1173 |
o This command is stateless, this means that commands that depend |
1174 |
on state information (such as getfd) might not work |
1175 |
|
1176 |
o Commands that prompt the user for data (eg. 'cont' when the block |
1177 |
device is encrypted) don't currently work |
1178 |
|
1179 |
3. Query Commands |
1180 |
================= |
1181 |
|
1182 |
HXCOMM Each query command below is inside a SQMP/EQMP section, do NOT change |
1183 |
HXCOMM this! We will possibly move query commands definitions inside those |
1184 |
HXCOMM sections, just like regular commands. |
1185 |
|
1186 |
EQMP |
1187 |
|
1188 |
SQMP |
1189 |
query-version |
1190 |
------------- |
1191 |
|
1192 |
Show QEMU version. |
1193 |
|
1194 |
Return a json-object with the following information: |
1195 |
|
1196 |
- "qemu": A json-object containing three integer values: |
1197 |
- "major": QEMU's major version (json-int) |
1198 |
- "minor": QEMU's minor version (json-int) |
1199 |
- "micro": QEMU's micro version (json-int) |
1200 |
- "package": package's version (json-string) |
1201 |
|
1202 |
Example: |
1203 |
|
1204 |
-> { "execute": "query-version" } |
1205 |
<- { |
1206 |
"return":{ |
1207 |
"qemu":{ |
1208 |
"major":0, |
1209 |
"minor":11, |
1210 |
"micro":5 |
1211 |
}, |
1212 |
"package":"" |
1213 |
} |
1214 |
} |
1215 |
|
1216 |
EQMP |
1217 |
|
1218 |
{ |
1219 |
.name = "query-version", |
1220 |
.args_type = "", |
1221 |
.mhandler.cmd_new = qmp_marshal_input_query_version, |
1222 |
}, |
1223 |
|
1224 |
SQMP |
1225 |
query-commands |
1226 |
-------------- |
1227 |
|
1228 |
List QMP available commands. |
1229 |
|
1230 |
Each command is represented by a json-object, the returned value is a json-array |
1231 |
of all commands. |
1232 |
|
1233 |
Each json-object contain: |
1234 |
|
1235 |
- "name": command's name (json-string) |
1236 |
|
1237 |
Example: |
1238 |
|
1239 |
-> { "execute": "query-commands" } |
1240 |
<- { |
1241 |
"return":[ |
1242 |
{ |
1243 |
"name":"query-balloon" |
1244 |
}, |
1245 |
{ |
1246 |
"name":"system_powerdown" |
1247 |
} |
1248 |
] |
1249 |
} |
1250 |
|
1251 |
Note: This example has been shortened as the real response is too long. |
1252 |
|
1253 |
EQMP |
1254 |
|
1255 |
{ |
1256 |
.name = "query-commands", |
1257 |
.args_type = "", |
1258 |
.mhandler.cmd_new = qmp_marshal_input_query_commands, |
1259 |
}, |
1260 |
|
1261 |
SQMP |
1262 |
query-events |
1263 |
-------------- |
1264 |
|
1265 |
List QMP available events. |
1266 |
|
1267 |
Each event is represented by a json-object, the returned value is a json-array |
1268 |
of all events. |
1269 |
|
1270 |
Each json-object contains: |
1271 |
|
1272 |
- "name": event's name (json-string) |
1273 |
|
1274 |
Example: |
1275 |
|
1276 |
-> { "execute": "query-events" } |
1277 |
<- { |
1278 |
"return":[ |
1279 |
{ |
1280 |
"name":"SHUTDOWN" |
1281 |
}, |
1282 |
{ |
1283 |
"name":"RESET" |
1284 |
} |
1285 |
] |
1286 |
} |
1287 |
|
1288 |
Note: This example has been shortened as the real response is too long. |
1289 |
|
1290 |
EQMP |
1291 |
|
1292 |
{ |
1293 |
.name = "query-events", |
1294 |
.args_type = "", |
1295 |
.mhandler.cmd_new = qmp_marshal_input_query_events, |
1296 |
}, |
1297 |
|
1298 |
SQMP |
1299 |
query-chardev |
1300 |
------------- |
1301 |
|
1302 |
Each device is represented by a json-object. The returned value is a json-array |
1303 |
of all devices. |
1304 |
|
1305 |
Each json-object contain the following: |
1306 |
|
1307 |
- "label": device's label (json-string) |
1308 |
- "filename": device's file (json-string) |
1309 |
|
1310 |
Example: |
1311 |
|
1312 |
-> { "execute": "query-chardev" } |
1313 |
<- { |
1314 |
"return":[ |
1315 |
{ |
1316 |
"label":"monitor", |
1317 |
"filename":"stdio" |
1318 |
}, |
1319 |
{ |
1320 |
"label":"serial0", |
1321 |
"filename":"vc" |
1322 |
} |
1323 |
] |
1324 |
} |
1325 |
|
1326 |
EQMP |
1327 |
|
1328 |
{ |
1329 |
.name = "query-chardev", |
1330 |
.args_type = "", |
1331 |
.mhandler.cmd_new = qmp_marshal_input_query_chardev, |
1332 |
}, |
1333 |
|
1334 |
SQMP |
1335 |
query-block |
1336 |
----------- |
1337 |
|
1338 |
Show the block devices. |
1339 |
|
1340 |
Each block device information is stored in a json-object and the returned value |
1341 |
is a json-array of all devices. |
1342 |
|
1343 |
Each json-object contain the following: |
1344 |
|
1345 |
- "device": device name (json-string) |
1346 |
- "type": device type (json-string) |
1347 |
- deprecated, retained for backward compatibility |
1348 |
- Possible values: "unknown" |
1349 |
- "removable": true if the device is removable, false otherwise (json-bool) |
1350 |
- "locked": true if the device is locked, false otherwise (json-bool) |
1351 |
- "tray-open": only present if removable, true if the device has a tray, |
1352 |
and it is open (json-bool) |
1353 |
- "inserted": only present if the device is inserted, it is a json-object |
1354 |
containing the following: |
1355 |
- "file": device file name (json-string) |
1356 |
- "ro": true if read-only, false otherwise (json-bool) |
1357 |
- "drv": driver format name (json-string) |
1358 |
- Possible values: "blkdebug", "bochs", "cloop", "cow", "dmg", |
1359 |
"file", "file", "ftp", "ftps", "host_cdrom", |
1360 |
"host_device", "host_floppy", "http", "https", |
1361 |
"nbd", "parallels", "qcow", "qcow2", "raw", |
1362 |
"tftp", "vdi", "vmdk", "vpc", "vvfat" |
1363 |
- "backing_file": backing file name (json-string, optional) |
1364 |
- "backing_file_depth": number of files in the backing file chain (json-int) |
1365 |
- "encrypted": true if encrypted, false otherwise (json-bool) |
1366 |
- "bps": limit total bytes per second (json-int) |
1367 |
- "bps_rd": limit read bytes per second (json-int) |
1368 |
- "bps_wr": limit write bytes per second (json-int) |
1369 |
- "iops": limit total I/O operations per second (json-int) |
1370 |
- "iops_rd": limit read operations per second (json-int) |
1371 |
- "iops_wr": limit write operations per second (json-int) |
1372 |
|
1373 |
- "io-status": I/O operation status, only present if the device supports it |
1374 |
and the VM is configured to stop on errors. It's always reset |
1375 |
to "ok" when the "cont" command is issued (json_string, optional) |
1376 |
- Possible values: "ok", "failed", "nospace" |
1377 |
|
1378 |
Example: |
1379 |
|
1380 |
-> { "execute": "query-block" } |
1381 |
<- { |
1382 |
"return":[ |
1383 |
{ |
1384 |
"io-status": "ok", |
1385 |
"device":"ide0-hd0", |
1386 |
"locked":false, |
1387 |
"removable":false, |
1388 |
"inserted":{ |
1389 |
"ro":false, |
1390 |
"drv":"qcow2", |
1391 |
"encrypted":false, |
1392 |
"file":"disks/test.img", |
1393 |
"backing_file_depth":0, |
1394 |
"bps":1000000, |
1395 |
"bps_rd":0, |
1396 |
"bps_wr":0, |
1397 |
"iops":1000000, |
1398 |
"iops_rd":0, |
1399 |
"iops_wr":0, |
1400 |
}, |
1401 |
"type":"unknown" |
1402 |
}, |
1403 |
{ |
1404 |
"io-status": "ok", |
1405 |
"device":"ide1-cd0", |
1406 |
"locked":false, |
1407 |
"removable":true, |
1408 |
"type":"unknown" |
1409 |
}, |
1410 |
{ |
1411 |
"device":"floppy0", |
1412 |
"locked":false, |
1413 |
"removable":true, |
1414 |
"type":"unknown" |
1415 |
}, |
1416 |
{ |
1417 |
"device":"sd0", |
1418 |
"locked":false, |
1419 |
"removable":true, |
1420 |
"type":"unknown" |
1421 |
} |
1422 |
] |
1423 |
} |
1424 |
|
1425 |
EQMP |
1426 |
|
1427 |
{ |
1428 |
.name = "query-block", |
1429 |
.args_type = "", |
1430 |
.mhandler.cmd_new = qmp_marshal_input_query_block, |
1431 |
}, |
1432 |
|
1433 |
SQMP |
1434 |
query-blockstats |
1435 |
---------------- |
1436 |
|
1437 |
Show block device statistics. |
1438 |
|
1439 |
Each device statistic information is stored in a json-object and the returned |
1440 |
value is a json-array of all devices. |
1441 |
|
1442 |
Each json-object contain the following: |
1443 |
|
1444 |
- "device": device name (json-string) |
1445 |
- "stats": A json-object with the statistics information, it contains: |
1446 |
- "rd_bytes": bytes read (json-int) |
1447 |
- "wr_bytes": bytes written (json-int) |
1448 |
- "rd_operations": read operations (json-int) |
1449 |
- "wr_operations": write operations (json-int) |
1450 |
- "flush_operations": cache flush operations (json-int) |
1451 |
- "wr_total_time_ns": total time spend on writes in nano-seconds (json-int) |
1452 |
- "rd_total_time_ns": total time spend on reads in nano-seconds (json-int) |
1453 |
- "flush_total_time_ns": total time spend on cache flushes in nano-seconds (json-int) |
1454 |
- "wr_highest_offset": Highest offset of a sector written since the |
1455 |
BlockDriverState has been opened (json-int) |
1456 |
- "parent": Contains recursively the statistics of the underlying |
1457 |
protocol (e.g. the host file for a qcow2 image). If there is |
1458 |
no underlying protocol, this field is omitted |
1459 |
(json-object, optional) |
1460 |
|
1461 |
Example: |
1462 |
|
1463 |
-> { "execute": "query-blockstats" } |
1464 |
<- { |
1465 |
"return":[ |
1466 |
{ |
1467 |
"device":"ide0-hd0", |
1468 |
"parent":{ |
1469 |
"stats":{ |
1470 |
"wr_highest_offset":3686448128, |
1471 |
"wr_bytes":9786368, |
1472 |
"wr_operations":751, |
1473 |
"rd_bytes":122567168, |
1474 |
"rd_operations":36772 |
1475 |
"wr_total_times_ns":313253456 |
1476 |
"rd_total_times_ns":3465673657 |
1477 |
"flush_total_times_ns":49653 |
1478 |
"flush_operations":61, |
1479 |
} |
1480 |
}, |
1481 |
"stats":{ |
1482 |
"wr_highest_offset":2821110784, |
1483 |
"wr_bytes":9786368, |
1484 |
"wr_operations":692, |
1485 |
"rd_bytes":122739200, |
1486 |
"rd_operations":36604 |
1487 |
"flush_operations":51, |
1488 |
"wr_total_times_ns":313253456 |
1489 |
"rd_total_times_ns":3465673657 |
1490 |
"flush_total_times_ns":49653 |
1491 |
} |
1492 |
}, |
1493 |
{ |
1494 |
"device":"ide1-cd0", |
1495 |
"stats":{ |
1496 |
"wr_highest_offset":0, |
1497 |
"wr_bytes":0, |
1498 |
"wr_operations":0, |
1499 |
"rd_bytes":0, |
1500 |
"rd_operations":0 |
1501 |
"flush_operations":0, |
1502 |
"wr_total_times_ns":0 |
1503 |
"rd_total_times_ns":0 |
1504 |
"flush_total_times_ns":0 |
1505 |
} |
1506 |
}, |
1507 |
{ |
1508 |
"device":"floppy0", |
1509 |
"stats":{ |
1510 |
"wr_highest_offset":0, |
1511 |
"wr_bytes":0, |
1512 |
"wr_operations":0, |
1513 |
"rd_bytes":0, |
1514 |
"rd_operations":0 |
1515 |
"flush_operations":0, |
1516 |
"wr_total_times_ns":0 |
1517 |
"rd_total_times_ns":0 |
1518 |
"flush_total_times_ns":0 |
1519 |
} |
1520 |
}, |
1521 |
{ |
1522 |
"device":"sd0", |
1523 |
"stats":{ |
1524 |
"wr_highest_offset":0, |
1525 |
"wr_bytes":0, |
1526 |
"wr_operations":0, |
1527 |
"rd_bytes":0, |
1528 |
"rd_operations":0 |
1529 |
"flush_operations":0, |
1530 |
"wr_total_times_ns":0 |
1531 |
"rd_total_times_ns":0 |
1532 |
"flush_total_times_ns":0 |
1533 |
} |
1534 |
} |
1535 |
] |
1536 |
} |
1537 |
|
1538 |
EQMP |
1539 |
|
1540 |
{ |
1541 |
.name = "query-blockstats", |
1542 |
.args_type = "", |
1543 |
.mhandler.cmd_new = qmp_marshal_input_query_blockstats, |
1544 |
}, |
1545 |
|
1546 |
SQMP |
1547 |
query-cpus |
1548 |
---------- |
1549 |
|
1550 |
Show CPU information. |
1551 |
|
1552 |
Return a json-array. Each CPU is represented by a json-object, which contains: |
1553 |
|
1554 |
- "CPU": CPU index (json-int) |
1555 |
- "current": true if this is the current CPU, false otherwise (json-bool) |
1556 |
- "halted": true if the cpu is halted, false otherwise (json-bool) |
1557 |
- Current program counter. The key's name depends on the architecture: |
1558 |
"pc": i386/x86_64 (json-int) |
1559 |
"nip": PPC (json-int) |
1560 |
"pc" and "npc": sparc (json-int) |
1561 |
"PC": mips (json-int) |
1562 |
- "thread_id": ID of the underlying host thread (json-int) |
1563 |
|
1564 |
Example: |
1565 |
|
1566 |
-> { "execute": "query-cpus" } |
1567 |
<- { |
1568 |
"return":[ |
1569 |
{ |
1570 |
"CPU":0, |
1571 |
"current":true, |
1572 |
"halted":false, |
1573 |
"pc":3227107138 |
1574 |
"thread_id":3134 |
1575 |
}, |
1576 |
{ |
1577 |
"CPU":1, |
1578 |
"current":false, |
1579 |
"halted":true, |
1580 |
"pc":7108165 |
1581 |
"thread_id":3135 |
1582 |
} |
1583 |
] |
1584 |
} |
1585 |
|
1586 |
EQMP |
1587 |
|
1588 |
{ |
1589 |
.name = "query-cpus", |
1590 |
.args_type = "", |
1591 |
.mhandler.cmd_new = qmp_marshal_input_query_cpus, |
1592 |
}, |
1593 |
|
1594 |
SQMP |
1595 |
query-pci |
1596 |
--------- |
1597 |
|
1598 |
PCI buses and devices information. |
1599 |
|
1600 |
The returned value is a json-array of all buses. Each bus is represented by |
1601 |
a json-object, which has a key with a json-array of all PCI devices attached |
1602 |
to it. Each device is represented by a json-object. |
1603 |
|
1604 |
The bus json-object contains the following: |
1605 |
|
1606 |
- "bus": bus number (json-int) |
1607 |
- "devices": a json-array of json-objects, each json-object represents a |
1608 |
PCI device |
1609 |
|
1610 |
The PCI device json-object contains the following: |
1611 |
|
1612 |
- "bus": identical to the parent's bus number (json-int) |
1613 |
- "slot": slot number (json-int) |
1614 |
- "function": function number (json-int) |
1615 |
- "class_info": a json-object containing: |
1616 |
- "desc": device class description (json-string, optional) |
1617 |
- "class": device class number (json-int) |
1618 |
- "id": a json-object containing: |
1619 |
- "device": device ID (json-int) |
1620 |
- "vendor": vendor ID (json-int) |
1621 |
- "irq": device's IRQ if assigned (json-int, optional) |
1622 |
- "qdev_id": qdev id string (json-string) |
1623 |
- "pci_bridge": It's a json-object, only present if this device is a |
1624 |
PCI bridge, contains: |
1625 |
- "bus": bus number (json-int) |
1626 |
- "secondary": secondary bus number (json-int) |
1627 |
- "subordinate": subordinate bus number (json-int) |
1628 |
- "io_range": I/O memory range information, a json-object with the |
1629 |
following members: |
1630 |
- "base": base address, in bytes (json-int) |
1631 |
- "limit": limit address, in bytes (json-int) |
1632 |
- "memory_range": memory range information, a json-object with the |
1633 |
following members: |
1634 |
- "base": base address, in bytes (json-int) |
1635 |
- "limit": limit address, in bytes (json-int) |
1636 |
- "prefetchable_range": Prefetchable memory range information, a |
1637 |
json-object with the following members: |
1638 |
- "base": base address, in bytes (json-int) |
1639 |
- "limit": limit address, in bytes (json-int) |
1640 |
- "devices": a json-array of PCI devices if there's any attached, each |
1641 |
each element is represented by a json-object, which contains |
1642 |
the same members of the 'PCI device json-object' described |
1643 |
above (optional) |
1644 |
- "regions": a json-array of json-objects, each json-object represents a |
1645 |
memory region of this device |
1646 |
|
1647 |
The memory range json-object contains the following: |
1648 |
|
1649 |
- "base": base memory address (json-int) |
1650 |
- "limit": limit value (json-int) |
1651 |
|
1652 |
The region json-object can be an I/O region or a memory region, an I/O region |
1653 |
json-object contains the following: |
1654 |
|
1655 |
- "type": "io" (json-string, fixed) |
1656 |
- "bar": BAR number (json-int) |
1657 |
- "address": memory address (json-int) |
1658 |
- "size": memory size (json-int) |
1659 |
|
1660 |
A memory region json-object contains the following: |
1661 |
|
1662 |
- "type": "memory" (json-string, fixed) |
1663 |
- "bar": BAR number (json-int) |
1664 |
- "address": memory address (json-int) |
1665 |
- "size": memory size (json-int) |
1666 |
- "mem_type_64": true or false (json-bool) |
1667 |
- "prefetch": true or false (json-bool) |
1668 |
|
1669 |
Example: |
1670 |
|
1671 |
-> { "execute": "query-pci" } |
1672 |
<- { |
1673 |
"return":[ |
1674 |
{ |
1675 |
"bus":0, |
1676 |
"devices":[ |
1677 |
{ |
1678 |
"bus":0, |
1679 |
"qdev_id":"", |
1680 |
"slot":0, |
1681 |
"class_info":{ |
1682 |
"class":1536, |
1683 |
"desc":"Host bridge" |
1684 |
}, |
1685 |
"id":{ |
1686 |
"device":32902, |
1687 |
"vendor":4663 |
1688 |
}, |
1689 |
"function":0, |
1690 |
"regions":[ |
1691 |
|
1692 |
] |
1693 |
}, |
1694 |
{ |
1695 |
"bus":0, |
1696 |
"qdev_id":"", |
1697 |
"slot":1, |
1698 |
"class_info":{ |
1699 |
"class":1537, |
1700 |
"desc":"ISA bridge" |
1701 |
}, |
1702 |
"id":{ |
1703 |
"device":32902, |
1704 |
"vendor":28672 |
1705 |
}, |
1706 |
"function":0, |
1707 |
"regions":[ |
1708 |
|
1709 |
] |
1710 |
}, |
1711 |
{ |
1712 |
"bus":0, |
1713 |
"qdev_id":"", |
1714 |
"slot":1, |
1715 |
"class_info":{ |
1716 |
"class":257, |
1717 |
"desc":"IDE controller" |
1718 |
}, |
1719 |
"id":{ |
1720 |
"device":32902, |
1721 |
"vendor":28688 |
1722 |
}, |
1723 |
"function":1, |
1724 |
"regions":[ |
1725 |
{ |
1726 |
"bar":4, |
1727 |
"size":16, |
1728 |
"address":49152, |
1729 |
"type":"io" |
1730 |
} |
1731 |
] |
1732 |
}, |
1733 |
{ |
1734 |
"bus":0, |
1735 |
"qdev_id":"", |
1736 |
"slot":2, |
1737 |
"class_info":{ |
1738 |
"class":768, |
1739 |
"desc":"VGA controller" |
1740 |
}, |
1741 |
"id":{ |
1742 |
"device":4115, |
1743 |
"vendor":184 |
1744 |
}, |
1745 |
"function":0, |
1746 |
"regions":[ |
1747 |
{ |
1748 |
"prefetch":true, |
1749 |
"mem_type_64":false, |
1750 |
"bar":0, |
1751 |
"size":33554432, |
1752 |
"address":4026531840, |
1753 |
"type":"memory" |
1754 |
}, |
1755 |
{ |
1756 |
"prefetch":false, |
1757 |
"mem_type_64":false, |
1758 |
"bar":1, |
1759 |
"size":4096, |
1760 |
"address":4060086272, |
1761 |
"type":"memory" |
1762 |
}, |
1763 |
{ |
1764 |
"prefetch":false, |
1765 |
"mem_type_64":false, |
1766 |
"bar":6, |
1767 |
"size":65536, |
1768 |
"address":-1, |
1769 |
"type":"memory" |
1770 |
} |
1771 |
] |
1772 |
}, |
1773 |
{ |
1774 |
"bus":0, |
1775 |
"qdev_id":"", |
1776 |
"irq":11, |
1777 |
"slot":4, |
1778 |
"class_info":{ |
1779 |
"class":1280, |
1780 |
"desc":"RAM controller" |
1781 |
}, |
1782 |
"id":{ |
1783 |
"device":6900, |
1784 |
"vendor":4098 |
1785 |
}, |
1786 |
"function":0, |
1787 |
"regions":[ |
1788 |
{ |
1789 |
"bar":0, |
1790 |
"size":32, |
1791 |
"address":49280, |
1792 |
"type":"io" |
1793 |
} |
1794 |
] |
1795 |
} |
1796 |
] |
1797 |
} |
1798 |
] |
1799 |
} |
1800 |
|
1801 |
Note: This example has been shortened as the real response is too long. |
1802 |
|
1803 |
EQMP |
1804 |
|
1805 |
{ |
1806 |
.name = "query-pci", |
1807 |
.args_type = "", |
1808 |
.mhandler.cmd_new = qmp_marshal_input_query_pci, |
1809 |
}, |
1810 |
|
1811 |
SQMP |
1812 |
query-kvm |
1813 |
--------- |
1814 |
|
1815 |
Show KVM information. |
1816 |
|
1817 |
Return a json-object with the following information: |
1818 |
|
1819 |
- "enabled": true if KVM support is enabled, false otherwise (json-bool) |
1820 |
- "present": true if QEMU has KVM support, false otherwise (json-bool) |
1821 |
|
1822 |
Example: |
1823 |
|
1824 |
-> { "execute": "query-kvm" } |
1825 |
<- { "return": { "enabled": true, "present": true } } |
1826 |
|
1827 |
EQMP |
1828 |
|
1829 |
{ |
1830 |
.name = "query-kvm", |
1831 |
.args_type = "", |
1832 |
.mhandler.cmd_new = qmp_marshal_input_query_kvm, |
1833 |
}, |
1834 |
|
1835 |
SQMP |
1836 |
query-status |
1837 |
------------ |
1838 |
|
1839 |
Return a json-object with the following information: |
1840 |
|
1841 |
- "running": true if the VM is running, or false if it is paused (json-bool) |
1842 |
- "singlestep": true if the VM is in single step mode, |
1843 |
false otherwise (json-bool) |
1844 |
- "status": one of the following values (json-string) |
1845 |
"debug" - QEMU is running on a debugger |
1846 |
"inmigrate" - guest is paused waiting for an incoming migration |
1847 |
"internal-error" - An internal error that prevents further guest |
1848 |
execution has occurred |
1849 |
"io-error" - the last IOP has failed and the device is configured |
1850 |
to pause on I/O errors |
1851 |
"paused" - guest has been paused via the 'stop' command |
1852 |
"postmigrate" - guest is paused following a successful 'migrate' |
1853 |
"prelaunch" - QEMU was started with -S and guest has not started |
1854 |
"finish-migrate" - guest is paused to finish the migration process |
1855 |
"restore-vm" - guest is paused to restore VM state |
1856 |
"running" - guest is actively running |
1857 |
"save-vm" - guest is paused to save the VM state |
1858 |
"shutdown" - guest is shut down (and -no-shutdown is in use) |
1859 |
"watchdog" - the watchdog action is configured to pause and |
1860 |
has been triggered |
1861 |
|
1862 |
Example: |
1863 |
|
1864 |
-> { "execute": "query-status" } |
1865 |
<- { "return": { "running": true, "singlestep": false, "status": "running" } } |
1866 |
|
1867 |
EQMP |
1868 |
|
1869 |
{ |
1870 |
.name = "query-status", |
1871 |
.args_type = "", |
1872 |
.mhandler.cmd_new = qmp_marshal_input_query_status, |
1873 |
}, |
1874 |
|
1875 |
SQMP |
1876 |
query-mice |
1877 |
---------- |
1878 |
|
1879 |
Show VM mice information. |
1880 |
|
1881 |
Each mouse is represented by a json-object, the returned value is a json-array |
1882 |
of all mice. |
1883 |
|
1884 |
The mouse json-object contains the following: |
1885 |
|
1886 |
- "name": mouse's name (json-string) |
1887 |
- "index": mouse's index (json-int) |
1888 |
- "current": true if this mouse is receiving events, false otherwise (json-bool) |
1889 |
- "absolute": true if the mouse generates absolute input events (json-bool) |
1890 |
|
1891 |
Example: |
1892 |
|
1893 |
-> { "execute": "query-mice" } |
1894 |
<- { |
1895 |
"return":[ |
1896 |
{ |
1897 |
"name":"QEMU Microsoft Mouse", |
1898 |
"index":0, |
1899 |
"current":false, |
1900 |
"absolute":false |
1901 |
}, |
1902 |
{ |
1903 |
"name":"QEMU PS/2 Mouse", |
1904 |
"index":1, |
1905 |
"current":true, |
1906 |
"absolute":true |
1907 |
} |
1908 |
] |
1909 |
} |
1910 |
|
1911 |
EQMP |
1912 |
|
1913 |
{ |
1914 |
.name = "query-mice", |
1915 |
.args_type = "", |
1916 |
.mhandler.cmd_new = qmp_marshal_input_query_mice, |
1917 |
}, |
1918 |
|
1919 |
SQMP |
1920 |
query-vnc |
1921 |
--------- |
1922 |
|
1923 |
Show VNC server information. |
1924 |
|
1925 |
Return a json-object with server information. Connected clients are returned |
1926 |
as a json-array of json-objects. |
1927 |
|
1928 |
The main json-object contains the following: |
1929 |
|
1930 |
- "enabled": true or false (json-bool) |
1931 |
- "host": server's IP address (json-string) |
1932 |
- "family": address family (json-string) |
1933 |
- Possible values: "ipv4", "ipv6", "unix", "unknown" |
1934 |
- "service": server's port number (json-string) |
1935 |
- "auth": authentication method (json-string) |
1936 |
- Possible values: "invalid", "none", "ra2", "ra2ne", "sasl", "tight", |
1937 |
"tls", "ultra", "unknown", "vencrypt", "vencrypt", |
1938 |
"vencrypt+plain", "vencrypt+tls+none", |
1939 |
"vencrypt+tls+plain", "vencrypt+tls+sasl", |
1940 |
"vencrypt+tls+vnc", "vencrypt+x509+none", |
1941 |
"vencrypt+x509+plain", "vencrypt+x509+sasl", |
1942 |
"vencrypt+x509+vnc", "vnc" |
1943 |
- "clients": a json-array of all connected clients |
1944 |
|
1945 |
Clients are described by a json-object, each one contain the following: |
1946 |
|
1947 |
- "host": client's IP address (json-string) |
1948 |
- "family": address family (json-string) |
1949 |
- Possible values: "ipv4", "ipv6", "unix", "unknown" |
1950 |
- "service": client's port number (json-string) |
1951 |
- "x509_dname": TLS dname (json-string, optional) |
1952 |
- "sasl_username": SASL username (json-string, optional) |
1953 |
|
1954 |
Example: |
1955 |
|
1956 |
-> { "execute": "query-vnc" } |
1957 |
<- { |
1958 |
"return":{ |
1959 |
"enabled":true, |
1960 |
"host":"0.0.0.0", |
1961 |
"service":"50402", |
1962 |
"auth":"vnc", |
1963 |
"family":"ipv4", |
1964 |
"clients":[ |
1965 |
{ |
1966 |
"host":"127.0.0.1", |
1967 |
"service":"50401", |
1968 |
"family":"ipv4" |
1969 |
} |
1970 |
] |
1971 |
} |
1972 |
} |
1973 |
|
1974 |
EQMP |
1975 |
|
1976 |
{ |
1977 |
.name = "query-vnc", |
1978 |
.args_type = "", |
1979 |
.mhandler.cmd_new = qmp_marshal_input_query_vnc, |
1980 |
}, |
1981 |
|
1982 |
SQMP |
1983 |
query-spice |
1984 |
----------- |
1985 |
|
1986 |
Show SPICE server information. |
1987 |
|
1988 |
Return a json-object with server information. Connected clients are returned |
1989 |
as a json-array of json-objects. |
1990 |
|
1991 |
The main json-object contains the following: |
1992 |
|
1993 |
- "enabled": true or false (json-bool) |
1994 |
- "host": server's IP address (json-string) |
1995 |
- "port": server's port number (json-int, optional) |
1996 |
- "tls-port": server's port number (json-int, optional) |
1997 |
- "auth": authentication method (json-string) |
1998 |
- Possible values: "none", "spice" |
1999 |
- "channels": a json-array of all active channels clients |
2000 |
|
2001 |
Channels are described by a json-object, each one contain the following: |
2002 |
|
2003 |
- "host": client's IP address (json-string) |
2004 |
- "family": address family (json-string) |
2005 |
- Possible values: "ipv4", "ipv6", "unix", "unknown" |
2006 |
- "port": client's port number (json-string) |
2007 |
- "connection-id": spice connection id. All channels with the same id |
2008 |
belong to the same spice session (json-int) |
2009 |
- "channel-type": channel type. "1" is the main control channel, filter for |
2010 |
this one if you want track spice sessions only (json-int) |
2011 |
- "channel-id": channel id. Usually "0", might be different needed when |
2012 |
multiple channels of the same type exist, such as multiple |
2013 |
display channels in a multihead setup (json-int) |
2014 |
- "tls": whevener the channel is encrypted (json-bool) |
2015 |
|
2016 |
Example: |
2017 |
|
2018 |
-> { "execute": "query-spice" } |
2019 |
<- { |
2020 |
"return": { |
2021 |
"enabled": true, |
2022 |
"auth": "spice", |
2023 |
"port": 5920, |
2024 |
"tls-port": 5921, |
2025 |
"host": "0.0.0.0", |
2026 |
"channels": [ |
2027 |
{ |
2028 |
"port": "54924", |
2029 |
"family": "ipv4", |
2030 |
"channel-type": 1, |
2031 |
"connection-id": 1804289383, |
2032 |
"host": "127.0.0.1", |
2033 |
"channel-id": 0, |
2034 |
"tls": true |
2035 |
}, |
2036 |
{ |
2037 |
"port": "36710", |
2038 |
"family": "ipv4", |
2039 |
"channel-type": 4, |
2040 |
"connection-id": 1804289383, |
2041 |
"host": "127.0.0.1", |
2042 |
"channel-id": 0, |
2043 |
"tls": false |
2044 |
}, |
2045 |
[ ... more channels follow ... ] |
2046 |
] |
2047 |
} |
2048 |
} |
2049 |
|
2050 |
EQMP |
2051 |
|
2052 |
#if defined(CONFIG_SPICE) |
2053 |
{ |
2054 |
.name = "query-spice", |
2055 |
.args_type = "", |
2056 |
.mhandler.cmd_new = qmp_marshal_input_query_spice, |
2057 |
}, |
2058 |
#endif |
2059 |
|
2060 |
SQMP |
2061 |
query-name |
2062 |
---------- |
2063 |
|
2064 |
Show VM name. |
2065 |
|
2066 |
Return a json-object with the following information: |
2067 |
|
2068 |
- "name": VM's name (json-string, optional) |
2069 |
|
2070 |
Example: |
2071 |
|
2072 |
-> { "execute": "query-name" } |
2073 |
<- { "return": { "name": "qemu-name" } } |
2074 |
|
2075 |
EQMP |
2076 |
|
2077 |
{ |
2078 |
.name = "query-name", |
2079 |
.args_type = "", |
2080 |
.mhandler.cmd_new = qmp_marshal_input_query_name, |
2081 |
}, |
2082 |
|
2083 |
SQMP |
2084 |
query-uuid |
2085 |
---------- |
2086 |
|
2087 |
Show VM UUID. |
2088 |
|
2089 |
Return a json-object with the following information: |
2090 |
|
2091 |
- "UUID": Universally Unique Identifier (json-string) |
2092 |
|
2093 |
Example: |
2094 |
|
2095 |
-> { "execute": "query-uuid" } |
2096 |
<- { "return": { "UUID": "550e8400-e29b-41d4-a716-446655440000" } } |
2097 |
|
2098 |
EQMP |
2099 |
|
2100 |
{ |
2101 |
.name = "query-uuid", |
2102 |
.args_type = "", |
2103 |
.mhandler.cmd_new = qmp_marshal_input_query_uuid, |
2104 |
}, |
2105 |
|
2106 |
SQMP |
2107 |
query-migrate |
2108 |
------------- |
2109 |
|
2110 |
Migration status. |
2111 |
|
2112 |
Return a json-object. If migration is active there will be another json-object |
2113 |
with RAM migration status and if block migration is active another one with |
2114 |
block migration status. |
2115 |
|
2116 |
The main json-object contains the following: |
2117 |
|
2118 |
- "status": migration status (json-string) |
2119 |
- Possible values: "active", "completed", "failed", "cancelled" |
2120 |
- "ram": only present if "status" is "active", it is a json-object with the |
2121 |
following RAM information (in bytes): |
2122 |
- "transferred": amount transferred (json-int) |
2123 |
- "remaining": amount remaining (json-int) |
2124 |
- "total": total (json-int) |
2125 |
- "total-time": total amount of ms since migration started. If |
2126 |
migration has ended, it returns the total migration time |
2127 |
(json-int) |
2128 |
- "duplicate": number of duplicated pages (json-int) |
2129 |
- "normal" : number of normal pages transferred (json-int) |
2130 |
- "normal-bytes" : number of normal bytes transferred (json-int) |
2131 |
- "disk": only present if "status" is "active" and it is a block migration, |
2132 |
it is a json-object with the following disk information (in bytes): |
2133 |
- "transferred": amount transferred (json-int) |
2134 |
- "remaining": amount remaining (json-int) |
2135 |
- "total": total (json-int) |
2136 |
- "xbzrle-cache": only present if XBZRLE is active. |
2137 |
It is a json-object with the following XBZRLE information: |
2138 |
- "cache-size": XBZRLE cache size |
2139 |
- "bytes": total XBZRLE bytes transferred |
2140 |
- "pages": number of XBZRLE compressed pages |
2141 |
- "cache-miss": number of cache misses |
2142 |
- "overflow": number of XBZRLE overflows |
2143 |
Examples: |
2144 |
|
2145 |
1. Before the first migration |
2146 |
|
2147 |
-> { "execute": "query-migrate" } |
2148 |
<- { "return": {} } |
2149 |
|
2150 |
2. Migration is done and has succeeded |
2151 |
|
2152 |
-> { "execute": "query-migrate" } |
2153 |
<- { "return": { |
2154 |
"status": "completed", |
2155 |
"ram":{ |
2156 |
"transferred":123, |
2157 |
"remaining":123, |
2158 |
"total":246, |
2159 |
"total-time":12345, |
2160 |
"duplicate":123, |
2161 |
"normal":123, |
2162 |
"normal-bytes":123456 |
2163 |
} |
2164 |
} |
2165 |
} |
2166 |
|
2167 |
3. Migration is done and has failed |
2168 |
|
2169 |
-> { "execute": "query-migrate" } |
2170 |
<- { "return": { "status": "failed" } } |
2171 |
|
2172 |
4. Migration is being performed and is not a block migration: |
2173 |
|
2174 |
-> { "execute": "query-migrate" } |
2175 |
<- { |
2176 |
"return":{ |
2177 |
"status":"active", |
2178 |
"ram":{ |
2179 |
"transferred":123, |
2180 |
"remaining":123, |
2181 |
"total":246, |
2182 |
"total-time":12345, |
2183 |
"duplicate":123, |
2184 |
"normal":123, |
2185 |
"normal-bytes":123456 |
2186 |
} |
2187 |
} |
2188 |
} |
2189 |
|
2190 |
5. Migration is being performed and is a block migration: |
2191 |
|
2192 |
-> { "execute": "query-migrate" } |
2193 |
<- { |
2194 |
"return":{ |
2195 |
"status":"active", |
2196 |
"ram":{ |
2197 |
"total":1057024, |
2198 |
"remaining":1053304, |
2199 |
"transferred":3720, |
2200 |
"total-time":12345, |
2201 |
"duplicate":123, |
2202 |
"normal":123, |
2203 |
"normal-bytes":123456 |
2204 |
}, |
2205 |
"disk":{ |
2206 |
"total":20971520, |
2207 |
"remaining":20880384, |
2208 |
"transferred":91136 |
2209 |
} |
2210 |
} |
2211 |
} |
2212 |
|
2213 |
6. Migration is being performed and XBZRLE is active: |
2214 |
|
2215 |
-> { "execute": "query-migrate" } |
2216 |
<- { |
2217 |
"return":{ |
2218 |
"status":"active", |
2219 |
"capabilities" : [ { "capability": "xbzrle", "state" : true } ], |
2220 |
"ram":{ |
2221 |
"total":1057024, |
2222 |
"remaining":1053304, |
2223 |
"transferred":3720, |
2224 |
"total-time":12345, |
2225 |
"duplicate":10, |
2226 |
"normal":3333, |
2227 |
"normal-bytes":3412992 |
2228 |
}, |
2229 |
"xbzrle-cache":{ |
2230 |
"cache-size":67108864, |
2231 |
"bytes":20971520, |
2232 |
"pages":2444343, |
2233 |
"cache-miss":2244, |
2234 |
"overflow":34434 |
2235 |
} |
2236 |
} |
2237 |
} |
2238 |
|
2239 |
EQMP |
2240 |
|
2241 |
{ |
2242 |
.name = "query-migrate", |
2243 |
.args_type = "", |
2244 |
.mhandler.cmd_new = qmp_marshal_input_query_migrate, |
2245 |
}, |
2246 |
|
2247 |
SQMP |
2248 |
migrate-set-capabilities |
2249 |
------- |
2250 |
|
2251 |
Enable/Disable migration capabilities |
2252 |
|
2253 |
- "xbzrle": xbzrle support |
2254 |
|
2255 |
Arguments: |
2256 |
|
2257 |
Example: |
2258 |
|
2259 |
-> { "execute": "migrate-set-capabilities" , "arguments": |
2260 |
{ "capabilities": [ { "capability": "xbzrle", "state": true } ] } } |
2261 |
|
2262 |
EQMP |
2263 |
|
2264 |
{ |
2265 |
.name = "migrate-set-capabilities", |
2266 |
.args_type = "capabilities:O", |
2267 |
.params = "capability:s,state:b", |
2268 |
.mhandler.cmd_new = qmp_marshal_input_migrate_set_capabilities, |
2269 |
}, |
2270 |
SQMP |
2271 |
query-migrate-capabilities |
2272 |
------- |
2273 |
|
2274 |
Query current migration capabilities |
2275 |
|
2276 |
- "capabilities": migration capabilities state |
2277 |
- "xbzrle" : XBZRLE state (json-bool) |
2278 |
|
2279 |
Arguments: |
2280 |
|
2281 |
Example: |
2282 |
|
2283 |
-> { "execute": "query-migrate-capabilities" } |
2284 |
<- { "return": { |
2285 |
"capabilities" : [ { "capability" : "xbzrle", "state" : false } ] |
2286 |
} |
2287 |
} |
2288 |
EQMP |
2289 |
|
2290 |
{ |
2291 |
.name = "query-migrate-capabilities", |
2292 |
.args_type = "", |
2293 |
.mhandler.cmd_new = qmp_marshal_input_query_migrate_capabilities, |
2294 |
}, |
2295 |
|
2296 |
SQMP |
2297 |
query-balloon |
2298 |
------------- |
2299 |
|
2300 |
Show balloon information. |
2301 |
|
2302 |
Make an asynchronous request for balloon info. When the request completes a |
2303 |
json-object will be returned containing the following data: |
2304 |
|
2305 |
- "actual": current balloon value in bytes (json-int) |
2306 |
- "mem_swapped_in": Amount of memory swapped in bytes (json-int, optional) |
2307 |
- "mem_swapped_out": Amount of memory swapped out in bytes (json-int, optional) |
2308 |
- "major_page_faults": Number of major faults (json-int, optional) |
2309 |
- "minor_page_faults": Number of minor faults (json-int, optional) |
2310 |
- "free_mem": Total amount of free and unused memory in |
2311 |
bytes (json-int, optional) |
2312 |
- "total_mem": Total amount of available memory in bytes (json-int, optional) |
2313 |
|
2314 |
Example: |
2315 |
|
2316 |
-> { "execute": "query-balloon" } |
2317 |
<- { |
2318 |
"return":{ |
2319 |
"actual":1073741824, |
2320 |
"mem_swapped_in":0, |
2321 |
"mem_swapped_out":0, |
2322 |
"major_page_faults":142, |
2323 |
"minor_page_faults":239245, |
2324 |
"free_mem":1014185984, |
2325 |
"total_mem":1044668416 |
2326 |
} |
2327 |
} |
2328 |
|
2329 |
EQMP |
2330 |
|
2331 |
{ |
2332 |
.name = "query-balloon", |
2333 |
.args_type = "", |
2334 |
.mhandler.cmd_new = qmp_marshal_input_query_balloon, |
2335 |
}, |
2336 |
|
2337 |
{ |
2338 |
.name = "query-block-jobs", |
2339 |
.args_type = "", |
2340 |
.mhandler.cmd_new = qmp_marshal_input_query_block_jobs, |
2341 |
}, |
2342 |
|
2343 |
{ |
2344 |
.name = "qom-list", |
2345 |
.args_type = "path:s", |
2346 |
.mhandler.cmd_new = qmp_marshal_input_qom_list, |
2347 |
}, |
2348 |
|
2349 |
{ |
2350 |
.name = "qom-set", |
2351 |
.args_type = "path:s,property:s,value:q", |
2352 |
.mhandler.cmd_new = qmp_qom_set, |
2353 |
}, |
2354 |
|
2355 |
{ |
2356 |
.name = "qom-get", |
2357 |
.args_type = "path:s,property:s", |
2358 |
.mhandler.cmd_new = qmp_qom_get, |
2359 |
}, |
2360 |
|
2361 |
{ |
2362 |
.name = "change-vnc-password", |
2363 |
.args_type = "password:s", |
2364 |
.mhandler.cmd_new = qmp_marshal_input_change_vnc_password, |
2365 |
}, |
2366 |
{ |
2367 |
.name = "qom-list-types", |
2368 |
.args_type = "implements:s?,abstract:b?", |
2369 |
.mhandler.cmd_new = qmp_marshal_input_qom_list_types, |
2370 |
}, |